Sample records for remote monitoring sensor

  1. Medical Remote Monitoring using sound environment analysis and wearable sensors 1 Medical Remote Monitoring using sound

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Medical Remote Monitoring using sound environment analysis and wearable sensors 1 X Medical Remote Monitoring using sound environment analysis and wearable sensors Dan Istrate1, Jérôme Boudy2, Hamid Medjahed1. In Europe, for example, the life expectancy for men is about 71 years and for women about 79 years

  2. Radiochemical Sensor for Continuous and Remote Liquid Effluents Monitoring

    SciTech Connect (OSTI)

    Tarancon, A.; Garcia, J.F.; Rauret, G. [Departament de Quimica Analitica. Facultat de Quimica. Universitat de Barcelona (Spain); Padro, A. [Serveis Cientifico-Tecnics. Universitat de Barcelona. Sole Sabaris Barcelona (Spain)

    2008-07-01T23:59:59.000Z

    On-line radioactivity monitoring in liquid effluents is an increasing need according to the international regulations at present. Classical activity determination procedures include the sequence of sampling, chemical treatment, measurement and data treatment. These steps are man-power consuming, generate a great amount of waste and introduce an important delay between the potential pollution event and its detection and quantification. To overcome these limitations, we have developed a radiochemical sensor for liquid effluents capable of sending information about the specific activity and volume of a contamination episode to a remote position, on line and continuously. The capabilities of the sensor developed here allow detecting and quantifying contamination pulses of alpha, beta and gamma emitters of different volumes and activity levels included in a continuous stream. Sensor receptor includes two detection systems, one addressed to determine alpha, beta and gamma events and the other to detect sample gamma emissions. Detailed sensor structure will be shown at the conference because patent is in process at this moment. Detection efficiencies (%) obtained in the alpha-beta-gamma system for the range of contamination volumes considered (2- 300 ml) are: 1.6 - 3.2%, for Pu-240; 22.2 - 58.4%, for Sr-90/Y-90 and 8.8 -17.7%, for Cs-134. In the gamma system, values for Cs-134 detection range from 0.6% to 1.3%. Prediction errors obtained show that sensor is capable to detect Sr-90/Y-90 contamination pulses of at least 2 ml and 3 Bq/ml with a relative error lower of 10% in activity and 60% in volume. When contamination pulse increases up to 7 ml, relative errors decrease to 5% for both magnitudes. For Pu-240 and Cs-134, when contamination pulses are of at least 7 ml and 300 Bq/ml, the relative errors obtained in determinations performed in the alpha-beta-gamma system are lower than 10% in activity and 20 % in volume. The same errors are obtained in the gamma system for Cs-134 when contamination pulses are higher than 7 ml and activities up to 1300 Bq/ml. (authors)

  3. Remote electrochemical sensor

    DOE Patents [OSTI]

    Wang, Joseph (Las Cruces, NM); Olsen, Khris (Richland, WA); Larson, David (Las Cruces, NM)

    1997-01-01T23:59:59.000Z

    An electrochemical sensor for remote detection, particularly useful for metal contaminants and organic or other compounds. The sensor circumvents technical difficulties that previously prevented in-situ remote operations. The microelectrode, connected to a long communications cable, allows convenient measurements of the element or compound at timed and frequent intervals and instrument/sample distances of ten feet to more than 100 feet. The sensor is useful for both downhole groundwater monitoring and in-situ water (e.g., shipboard seawater) analysis.

  4. Remote electrochemical sensor

    DOE Patents [OSTI]

    Wang, J.; Olsen, K.; Larson, D.

    1997-10-14T23:59:59.000Z

    An electrochemical sensor is described for remote detection, particularly useful for metal contaminants and organic or other compounds. The sensor circumvents technical difficulties that previously prevented in-situ remote operations. The microelectrode, connected to a long communications cable, allows convenient measurements of the element or compound at timed and frequent intervals and instrument/sample distances of ten feet to more than 100 feet. The sensor is useful for both downhole groundwater monitoring and in-situ water (e.g., shipboard seawater) analysis. 21 figs.

  5. Remote monitoring for international safeguards

    SciTech Connect (OSTI)

    Dupree, S.A. [Sandia National Labs., Albuquerque, NM (United States); Sonnier, C.S. [Jupiter Corp., Albuquerque, NM (United States)

    1997-09-01T23:59:59.000Z

    Remote monitoring is not a new technology, and its application to safeguards relevant activities has been examined for a number of years. On behalf of the US Department of Energy and international partners, remote monitoring systems have been emplaced in nuclear facilities and laboratories in various parts of the world. The experience gained from these field trials of remote monitoring systems has shown the viability of the concept of using integrated monitoring systems. Although a wide variety of sensors has been used in the remote monitoring field trials conducted to date, the possible range of instrumentation that might be used has scarcely been touched. As the technology becomes widespread, large amounts of data will become available to inspectors responsible for safeguards activities at the sites. Effective use of remote monitoring will require processing, archiving, presenting, and assessing of these data. To provide reasonable efficiency in the application of this technology, data processing should be done in a careful and organized manner. The problem will be not an issue of poring over scant records but of surviving under a deluge of information made possible by modern technology. Fortunately, modern technology, which created the problem of the data glut, is available to come to the assistance of those inundated by data. Apart from the technological problems, one of the most important aspects of remote monitoring is the potential constraint related to the transmission of data out of a facility or beyond national borders. Remote monitoring across national borders can be seriously considered only in the context of a comprehensive, transparent, and open implementation regime.

  6. Deployment of an Autonomous Sensor Network for Remote Sensing Applications Topic Area: Sensor Network Applications in Environmental Monitoring

    E-Print Network [OSTI]

    Salvaggio, Carl

    effort currently underway funded by the US Department of Energy's (DOE) Savannah River National Lab Imaging and Remote Sensing Lab (DIRS) at the Rochester Institute of Technology (RIT) have designed

  7. Remote Sensor Placement

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    developed to place the sensor nodes in the field. Contact Institute Director Charles Farrar (505) 663-5330 Email UCSD EI Director Michael Todd (858) 534-5951 Professional Staff...

  8. Remote Sensor Placement

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection Technical s o Freiberge s 3 c/) ReleaseRemote AccessSpectrum

  9. Millimeter wave sensor for monitoring effluents

    DOE Patents [OSTI]

    Gopalsami, Nachappa (Naperville, IL); Bakhtiari, Sasan (Bolingbrook, IL); Raptis, Apostolos C. (Downers Grove, IL); Dieckman, Stephen L. (Downers Grove, IL)

    1995-01-01T23:59:59.000Z

    A millimeter-wave sensor for detecting and measuring effluents from processing plants either remotely or on-site includes a high frequency signal source for transmitting frequency-modulated continuous waves in the millimeter or submillimeter range with a wide sweep capability and a computer-controlled detector for detecting a plurality of species of effluents on a real time basis. A high resolution spectrum of an effluent, or effluents, is generated by a deconvolution of the measured spectra resulting in a narrowing of the line widths by 2 or 3 orders of magnitude as compared with the pressure broadened spectra detected at atmospheric pressure for improved spectral specificity and measurement sensitivity. The sensor is particularly adapted for remote monitoring such as where access is limited or sensor cost restricts multiple sensors as well as for large area monitoring under nearly all weather conditions.

  10. Wireless sensor networks and environmental monitoring applications

    E-Print Network [OSTI]

    Le Borgne, Yann-AĂ«l

    by the Human Resources and Mobility program of the European community (MEST-CT-2004-505079) #12;ULB Machine Radio: 4kbps, 180m Sensors: Light and accelerometer Energy: Solar powered Golem and deputy dust 16mm3 ­ Remote or non invasive monitoring ·... #12;Solbosch greenhouses ·Greenhouses used by different research

  11. Use of sensors in monitoring civil structures

    E-Print Network [OSTI]

    Daher, Bassam William, 1979-

    2004-01-01T23:59:59.000Z

    This thesis surveys the use of sensors and sensor networks in monitoring civil structures, with particular emphasis on the monitoring of bridges and highways using fiber optic sensors. Following a brief review of the most ...

  12. Development of software architecture for environmental monitoring using wireless sensor networks

    E-Print Network [OSTI]

    Hari, Piyush

    2006-01-01T23:59:59.000Z

    In this thesis, I describe the development of the software architecture for temperature monitoring using Wireless Sensor Networks (WSN). The goal of the software is to provide a means to remotely monitor and analyze ...

  13. Radionuclide Sensors for Environmental Monitoring: From Flow...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Abstract: The development of in situ sensors for ultratrace detection applications in process control and environmental monitoring remains a significant challenge. Such sensors...

  14. An evaluation of alternate remote sensing products for forest inventory, monitoring, and

    E-Print Network [OSTI]

    Lefsky, Michael

    and related attributes at a regional scale. Several sensors were evaluated, including (i) single date Landsat), a lidar sensor that di- rectly measures the height and canopy structure of forest vegetation. To evaluateAn evaluation of alternate remote sensing products for forest inventory, monitoring, and mapping

  15. REMOTE AREA RADIATION MONITORING (RARM) ALTERNATIVES ANALYSIS

    SciTech Connect (OSTI)

    NELSON RL

    2008-07-18T23:59:59.000Z

    The Remote Area Radiation Monitoring (RARM) system will be used to provide real-time radiation monitoring information to the operations personnel during tank retrieval and transfer operations. The primary focus of the system is to detect potential anomalous (waste leaks) or transient radiological conditions. This system will provide mobile, real-time radiological monitoring, data logging, and status at pre-selected strategic points along the waste transfer route during tank retrieval operations. The system will provide early detection and response capabilities for the Retrieval and Closure Operations organization and Radiological Control personnel.

  16. Remote Health Monitoring Using Online Social Media Systems

    E-Print Network [OSTI]

    Bhatti, Saleem N.

    Remote Health Monitoring Using Online Social Media Systems Chonlatee Khorakhun University of St@cs.st-andrews.ac.uk Abstract--Remote monitoring is considered an essential part of future eHealth systems to enable the general requirements of a remote monitoring scenario and the process of building and using a Facebook

  17. Mobile sensor network to monitor wastewater collection pipelines

    E-Print Network [OSTI]

    Lim, Jungsoo

    2012-01-01T23:59:59.000Z

    Advanced pipeline monitoringDesign of mobile pipeline floating sensor “SewerSnortIllustration of mobile pipeline floating sensor monitoring

  18. Portsmouth X300 remote assay monitor system

    SciTech Connect (OSTI)

    Smith, D.E.

    1996-07-01T23:59:59.000Z

    Personnel in the Instrumentation and Controls Division at Oak Ridge National Laboratory (ORNL) in association with the United States Enrichment Corporation (USEC) have recently developed a system for monitoring and tracking the assay of enriched uranium from the production facilities at the Portsmouth Gaseous Diffusion Plant (PORTS). This work was sponsored by the USEC and has involved the expansion and improvement of an existing system that was developed by ORNL. The system provides control room operators with real-time information on the withdrawal operations of uranium hexafluoride at the withdrawal stations at PORTS. An additional system was developed to display the real-time information from each of the three withdrawal stations at a remotely located building. This report describes the remote assay monitor and display system that has been developed and installed at PORTS Building X300.

  19. Radionuclide Sensors for Water Monitoring

    SciTech Connect (OSTI)

    Grate, Jay W.; Egorov, Oleg B.; DeVol, Timothy A.

    2003-06-01T23:59:59.000Z

    Radionuclide contamination in the soil and groundwater at U.S. Department of Energy (DOE) sites is a severe problem that requires monitoring and remediation. Radionuclide measurement techniques are needed to monitor surface waters, groundwater, and process waters. Typically, water samples are collected and transported to an analytical laboratory, where costly radiochemical analyses are performed. To date, there has been very little development of selective radionuclide sensors for alpha- and beta-emitting radionuclides such as 90Sr, 99Tc, and various actinides of interest. The objective of this project is to investigate novel sensor concepts and materials for sensitive and selective determination of beta- and alpha-emitting radionuclide contaminants in water. To meet the requirements for low-level, isotope-specific detection, the proposed sensors are based on radiometric detection. As a means to address the fundamental challenge of the short ranges of beta and alpha particles in water, our overall approach is based on localization of preconcentration/separation chemistries directly on or within the active area of a radioactivity detector. Automated microfluidics is used for sample manipulation and sensor regeneration or renewal. The outcome of these investigations will be the knowledge necessary to choose appropriate chemistries for selective preconcentration of radionuclides from environmental samples, new materials that combine chemical selectivity with scintillating properties, new materials that add chemical selectivity to solid-state diode detectors, new preconcentrating column sensors, and improved instrumentation and signal processing for selective radionuclide sensors. New knowledge will provide the basis for designing effective probes and instrumentation for field and in situ measurements.

  20. Radionuclide Sensors for Water Monitoring

    SciTech Connect (OSTI)

    Grate, Jay W.; Egorov, Oleg B.; DeVol, Timothy A.

    2004-06-29T23:59:59.000Z

    Radionuclide contamination in the soil and groundwater at U.S. Department of Energy (DOE) sites is a severe problem that requires monitoring and remediation. Radionuclide measurement techniques are needed to monitor surface waters, groundwater, and process waters. Typically, water samples are collected and transported to an analytical laboratory, where costly radiochemical analyses are performed. To date, there has been very little development of selective radionuclide sensors for alpha- and beta-emitting radionuclides such as 90Sr, 99Tc, and various actinides of interest. The objective of this project is to investigate novel sensor concepts and materials for sensitive and selective determination of beta- and alpha-emitting radionuclide contaminants in water. To meet the requirements for low-level, isotope-specific detection, the proposed sensors are based on radiometric detection. As a means to address the fundamental challenge of the short ranges of beta and alpha particle s in water, our overall approach is based on localization of preconcentration/separation chemistries directly on or within the active area of a radioactivity detector. Automated microfluidics is used for sample manipulation and sensor regeneration or renewal. The outcome of these investigations will be the knowledge necessary to choose appropriate chemistries for selective preconcentration of radionuclides from environmental samples, new materials that combine chemical selectivity with scintillating properties, new materials that add chemical selectivity to solid-state diode detectors, new preconcentrating column sensors, and improved instrumentation and signal processing for selective radionuclide sensors. New knowledge will provide the basis for designing effective probes and instrumentation for field and in situ measurements.

  1. Remote Structural Health Monitoring Systems for Next Generation SCADA

    E-Print Network [OSTI]

    Chou, Pai H.

    Remote Structural Health Monitoring Systems for Next Generation SCADA Sehwan Kim1 Marco Torbol2, and to validate its effectiveness with long-term field deployment results. Keywords: structural health monitoring, SCADA system, remote monitoring system 1. INTRODUCTION Structural health monitoring (SHM) is the use

  2. Characterization, Monitoring, and Sensor Technologies - Teaming...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Characterization, Monitoring, and Sensor Technologies - Teaming with DOE to Develop, Transfer, and Deploy Technologies Ames Laboratory scientists are contributing their expertise...

  3. Airborne Infrared Target Tracking with the Nintendo Wii Remote Sensor 

    E-Print Network [OSTI]

    Beckett, Andrew 1984-

    2012-11-12T23:59:59.000Z

    entirely. This research presents a solution to the target tracking problem which reliably provides automatic target detection and tracking with low expense and computational overhead by making use of the infrared sensor from a Nintendo Wii Remote Controller....

  4. IpNose: Electronic nose for remote bad odour monitoring system in landfill sites Alex Perera*

    E-Print Network [OSTI]

    Gutierrez-Osuna, Ricardo

    IpNose: Electronic nose for remote bad odour monitoring system in landfill sites Alex Perera to classify and quantify different gas/odours. Here we suggest the integration of a small form factor computer of bad odours in landfill sites. Preliminary approach to this application using commercial sensors

  5. Characterization monitoring & sensor technology crosscutting program

    SciTech Connect (OSTI)

    NONE

    1996-08-01T23:59:59.000Z

    The purpose of the Characterization, Monitoring, and Sensor Technology Crosscutting Program (CMST-CP) is to deliver appropriate characterization, monitoring, and sensor technology (CMST) to the OFfice of Waste Management (EM-30), the Office of Environmental Restoration (EM-40), and the Office of Facility Transition and Management (EM-60).

  6. Remote Sensing Data and Information for Hydrological Monitoring and Modeling

    E-Print Network [OSTI]

    Krakauer, Nir Y.

    1 Remote Sensing Data and Information for Hydrological Monitoring and Modeling Reza Khanbilvardi Springs, MD, USA 1 Introduction Remote sensing data and information are shown great potential in supplying measurements, remote sensing based measurements are spatially averages over the pixels can appropriate

  7. Advanced Radio Frequency-Based Sensors for Monitoring Diesel...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Radio Frequency-Based Sensors for Monitoring Diesel Particulate Filter Loading and Regeneration Advanced Radio Frequency-Based Sensors for Monitoring Diesel Particulate Filter...

  8. A Summary Review of Wireless Sensors and Sensor Networks for Structural Health Monitoring

    E-Print Network [OSTI]

    Lynch, Jerome P.

    Articles A Summary Review of Wireless Sensors and Sensor Networks for Structural Health Monitoring performance and health. KEYWORDS: wireless sensors, structural monitoring, dam- age detection, smartb). Called structural health monitoring (SHM), this new paradigm offers an auto- mated method

  9. Study and Simulation of Remote Sensing System: COMPACT Airborne Spectral Sensor (COMPASS)

    E-Print Network [OSTI]

    Salvaggio, Carl

    1 Study and Simulation of Remote Sensing System: COMPACT Airborne Spectral Sensor (COMPASS) Paper............................................................................................ 5 COMPACT Airborne Spectral Sensor (COMPASS............................................................................................... 9 (FOUO) COMPASS Megacollect Data

  10. Monitoring Energy Consumption In Wireless Sensor Networks

    E-Print Network [OSTI]

    Turau, Volker

    Monitoring Energy Consumption In Wireless Sensor Networks Matthias Witt, Christoph Weyer, it may impair the ability of the sensor network to function. Therefore, minimizing energy consumption energy consumption in both standby and active modes is the basis of wireless networks. Energy preserving

  11. Mixed potential sensors for CO monitoring

    SciTech Connect (OSTI)

    Mukundan, R. (Rangachary); Brosha, E. L. (Eric L.); Garzon, F. H. (Fernando H.)

    2001-01-01T23:59:59.000Z

    A carbon monoxide sensor based on the phenomenon of 'mixed-potential' has been developed. The sensor consists of platinum and gold wire-electrodes embedded in a Ce{sub 0.8}Gd{sub 0.2}O{sub 1.9} electrolyte. The sensor response to 500 ppm of CO in room air is {approx} 100 mV at 400 C. The response time to 90% of level is < 5 sec and the response is stable over a period of several months. Moreover, the sensor to sensor reproducibility of these controlled-interface sensors is excellent. The sensor in combination with an activated carbon filter shows great promise for application as a room air CO monitor.

  12. Integration of wireless sensor networks in environmental monitoring cyber infrastructure

    E-Print Network [OSTI]

    Huang, Yan

    Integration of wireless sensor networks in environmental monitoring cyber infrastructure Jue Yang Ă? to revolutionize many science and engineering domains. We present a novel environmental monitoring system collection, management, visualization, dissemination, and exchange, conforming to the new Sensor Web

  13. Soft Sensors for Process Monitoring of Complex Processes 

    E-Print Network [OSTI]

    Serpas, Mitchell Roy

    2012-10-19T23:59:59.000Z

    Soft sensors are an essential component of process systems engineering schemes. While soft sensor design research is important, investigation into the relationships between soft sensors and other areas of advanced monitoring and control is crucial...

  14. DEVELOPMENT OF A SENSOR NETWORK TEST BED FOR ISD MATERIALS AND STRUCUTRAL CONDITION MONITORING

    SciTech Connect (OSTI)

    Zeigler, K.; Ferguson, B.; Karapatakis, D.; Herbst, C.; Stripling, C.

    2011-07-06T23:59:59.000Z

    The P Reactor at the Savannah River Site is one of the first reactor facilities in the US DOE complex that has been placed in its end state through in situ decommissioning (ISD). The ISD end state consists of a grout-filled concrete civil structure within the concrete frame of the original building. To evaluate the feasibility and utility of remote sensors to provide verification of ISD system conditions and performance characteristics, an ISD Sensor Network Test Bed has been designed and deployed at the Savannah River National Laboratory. The test bed addresses the DOE-EM Technology Need to develop a remote monitoring system to determine and verify ISD system performance. Commercial off-the-shelf sensors have been installed on concrete blocks taken from walls of the P Reactor Building. Deployment of this low-cost structural monitoring system provides hands-on experience with sensor networks. The initial sensor system consists of: (1) Groutable thermistors for temperature and moisture monitoring; (2) Strain gauges for crack growth monitoring; (3) Tiltmeters for settlement monitoring; and (4) A communication system for data collection. Preliminary baseline data and lessons learned from system design and installation and initial field testing will be utilized for future ISD sensor network development and deployment.

  15. Wireless Sensor Networks for Structural Health Monitoring by Sukun Kim

    E-Print Network [OSTI]

    California at Berkeley, University of

    Wireless Sensor Networks for Structural Health Monitoring by Sukun Kim Research Project Submitted James W. Demmel Second Reader (Date) #12;Wireless Sensor Networks for Structural Health Monitoring Copyright Spring 2005 by Sukun Kim #12;i Abstract Wireless Sensor Networks for Structural Health Monitoring

  16. Remote monitoring of soil moisture using airborne microwave radiometers

    E-Print Network [OSTI]

    Kroll, Charles Lindsey

    1973-01-01T23:59:59.000Z

    REMOTE MONITORING OF SOIL MOISTURE USING AIRBORNE MICROWAVE RADIOMETERS A Thesis by CHARLES LINDSEY J(ROLL Submitted to the Graduate College of Texas A)M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE... August 1973 Major Subject: Electrical Engineering REMOTE MONITORING OF SOIL MOISTURE USING AIRBORNE MICROWAVE RADIOMETERS A Thesis by CHARLES LINDSEY KROLL Approved as to style and content by: man o Co mrtt Hca o D artmc c Ill l c r Mem e Member...

  17. Optimal Strategies for Communication and Remote Estimation with an Energy Harvesting Sensor

    E-Print Network [OSTI]

    Teneketzis, Demosthenis

    1 Optimal Strategies for Communication and Remote Estimation with an Energy Harvesting Sensor A strategies. Communication problems with energy harvesting transmitters have been studied recently (see [1 with an energy harvesting sensor and a remote estimator. The sensor observes the state of a discrete-time source

  18. Radionuclide Sensors for Subsurface Water Monitoring

    SciTech Connect (OSTI)

    Timothy DeVol

    2006-06-30T23:59:59.000Z

    Contamination of the subsurface by radionuclides is a persistent and vexing problem for the Department of Energy. These radionuclides must be measured in field studies and monitoed in the long term when they cannot be removed. However, no radionuclide sensors existed for groundwater monitoring prior to this team's research under the EMSP program Detection of a and b decays from radionuclides in water is difficult due to their short ranges in condensed media.

  19. Airborne Infrared Target Tracking with the Nintendo Wii Remote Sensor

    E-Print Network [OSTI]

    Beckett, Andrew 1984-

    2012-11-12T23:59:59.000Z

    AIRBORNE INFRARED TARGET TRACKING WITH THE NINTENDO WII REMOTE SENSOR A Thesis by ANDREW WILSON BECKETT Submitted to the O ce of Graduate Studies of Texas A&M University in partial ful llment of the requirements for the degree of MASTER... of UAS in use today and provide invaluable capabilities to both the military and civil services. UAS are well-suited to the ISR role: large UAS can remain airborne for far longer than the limits of human endurance without needing to be large enough...

  20. Preserving Area Coverage in Wireless Sensor Networks by using

    E-Print Network [OSTI]

    Boyer, Edmond

    a studied phenomenon. Sensor nodes are deployed over hostile or remote environments to monitor a target area

  1. A Sensor Placement Approach for the Monitoring of Indoor Scenes

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    needed by research projects on energy management (ERGDOM [1]) and on the medical monitoringA Sensor Placement Approach for the Monitoring of Indoor Scenes Pierre David, Vincent Idasiak of a French project, which aims at developing a new human presence sensor, we intend to design a sensor system

  2. Wireless Sensor Network for Aircraft Health Monitoring Honeywell Labs

    E-Print Network [OSTI]

    Minnesota, University of

    Wireless Sensor Network for Aircraft Health Monitoring Haowei Bai Honeywell Labs 3660 Technology of applications. The objective of this article is to describe a wireless sensor network for monitoring of the health of aircraft engines. We describe the architec- ture of the wireless sensor network along with how

  3. Health Monitoring of Civil Infrastructures Using Wireless Sensor Networks

    E-Print Network [OSTI]

    Glaser, Steven D.

    Health Monitoring of Civil Infrastructures Using Wireless Sensor Networks Sukun Kim Shamim Pakzad of Society (CITRIS). #12;Health Monitoring of Civil Infrastructures Using Wireless Sensor Networks Sukun Kim1., 4145 N. First Street, San Jose, CA 95134 Abstract. A Wireless Sensor Network (WSN) for Structural

  4. Electrochemical NOx Sensor for Monitoring Diesel Emissions

    SciTech Connect (OSTI)

    Woo, L Y; Glass, R S

    2008-11-14T23:59:59.000Z

    Increasingly stringent emissions regulations will require the development of advanced gas sensors for a variety of applications. For example, compact, inexpensive sensors are needed for detection of regulated pollutants, including hydrocarbons (HCs), CO, and NO{sub x}, in automotive exhaust. Of particular importance will be a sensor for NO{sub x} to ensure the proper operation of the catalyst system in the next generation of diesel (CIDI) automobiles. Because many emerging applications, particularly monitoring of automotive exhaust, involve operation in harsh, high-temperature environments, robust ceramic-oxide-based electrochemical sensors are a promising technology. Sensors using yttria-stabilized zirconia (YSZ) as an oxygen-ion-conducting electrolyte have been widely reported for both amperometric and potentiometric modes of operation. These include the well-known exhaust gas oxygen (EGO) sensor. More recently, ac impedance-based (i.e., impedance-metric) sensing techniques using YSZ have been reported for sensing water vapor, hydrocarbons, CO, and NO{sub x}. Typically small-amplitude alternating signal is applied, and the sensor response is measured at a specified frequency. Most impedance-metric techniques have used the modulus (or magnitude) at low frequencies (< 1 Hz) as the sensing signal and attribute the measured response to interfacial phenomena. Work by our group has also investigated using phase angle as the sensing signal at somewhat higher frequencies (10 Hz). The higher frequency measurements would potentially allow for reduced sampling times during sensor operation. Another potential advantage of impedance-metric NO{sub x} sensing is the similarity in response to NO and NO{sub 2} (i.e., total-NO{sub x} sensing). Potentiometric NO{sub x} sensors typically show higher sensitivity to NO2 than NO, and responses that are opposite in sign. However, NO is more stable than NO{sub 2} at temperatures > 600 C, and thermodynamic calculations predict {approx}90% NO, balance NO{sub 2}. Since automotive exhaust sensors will probably be required to operate at temperatures > 600 C, NO is the dominant component in thermodynamic equilibrium and the target NOx species. Also, the use of upstream catalysts could further promote the conversion of NO{sub x} species to NO. Therefore, the focus of current work is to investigate the response to NO. Nevertheless, minimizing the sensitivity to a variety of competing species is important in order to obtain the accuracy necessary for achieving the emission limits. Mitigating the effect of interfering gases (e.g., O{sub 2}, water vapor, HCs, etc.) is an area of current study. For impedance metric NO{sub x} sensors, our previous work has demonstrated that the cross-sensitivity to O{sub 2} may be accounted for by comparing measurements at multiple frequencies. Other strategies for compensation are also being explored, including calibration using data from existing sensors located nearby. Our current work has made significant advances in terms of developing prototype sensors more suitable for commercialization. Also, dynamometer testing has provided real-world sensor performance data that will be useful in approaching potential suppliers to whom we can transfer the technology for commercialization. The advances are a direct result of understanding the sensing mechanisms responsible for impedance-based NO{sub x} sensing and the effect of materials choice and sensor design/geometry.

  5. REMOTE DETECTION OF INTERNAL PIPELINE CORROSION USING FLUIDIZED SENSORS

    SciTech Connect (OSTI)

    Narasi Sridhar; Garth Tormoen; Ashok Sabata

    2005-10-31T23:59:59.000Z

    Pipelines present a unique challenge to monitoring because of the great geographical distances they cover, their burial depth, their age, and the need to keep the product flowing without much interruption. Most other engineering structures that require monitoring do not pose such combined challenges. In this regard, a pipeline system can be considered analogous to the blood vessels in the human body. The human body has an extensive ''pipeline'' through which blood and other fluids are transported. The brain can generally sense damage to the system at any location and alert the body to provide temporary repair, unless the damage is severe. This is accomplished through a vast network of fixed and floating sensors combined with a vast and extremely complex communication/decision making system. The project described in this report mimics the distributed sensor system of our body, albeit in a much more rudimentary fashion. Internal corrosion is an important factor in pipeline integrity management. At present, the methods to assess internal corrosion in pipelines all have certain limitations. In-line inspection tools are costly and cannot be used in all pipelines. Because there is a significant time interval between inspections, any impact due to upsets in pipeline operations can be missed. Internal Corrosion Direct Assessment (ICDA) is a procedure that can be used to identify locations of possible internal corrosion. However, the uncertainties in the procedure require excavation and location of damage using more detailed inspection tools. Non-intrusive monitoring techniques can be used to monitor internal corrosion, but these tools also require pipeline excavation and are limited in the spatial extent of corrosion they can examine. Therefore, a floating sensor system that can deposit at locations of water accumulation and communicate the corrosion information to an external location is needed. To accomplish this, the project is divided into four main tasks related to wireless data transmission, corrosion sensor development, sensor system motion and delivery, and consideration of other pipeline operations issues. In the first year of the program, focus was on sensor development and wireless data transmission. The second year of the program, which was discontinued due to funding shortfall, would have focused on further wireless transmission development, packaging of sensor on wireless, and other operational issues. Because, the second year funding has been discontinued, recommendations are made for future studies.

  6. Structural health monitoring sensor development for the Imote2 platform

    E-Print Network [OSTI]

    Spencer Jr., B.F.

    Structural health monitoring sensor development for the Imote2 platform Jennifer A. Rice*a and B motivated researchers to seek effective methods for real-time structural health monitoring (SHM that is necessary to successfully implement SHM algorithms. Keywords: Structural health monitoring, smart sensor

  7. Aquatic Debris Monitoring Using Smartphone-Based Robotic Sensors

    E-Print Network [OSTI]

    to capture debris arrivals with reduced energy consumption. Keywords--Robotic sensor; aquatic debris of monitoring resolution. Re- cently, autonomous underwater vehicles (AUVs) [14] [31] have been used

  8. activity monitoring sensor: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    processing. Individual sensors monitor specific physiological signals (such as EEG, ECG, GSR, etc.) and communicate with each other and the personal server. Personal server...

  9. INT. J. REMOTE SENSING, 2003, VOL. 24, NO. 8, 17091721 A system for monitoring NO

    E-Print Network [OSTI]

    Bruzzone, Lorenzo

    INT. J. REMOTE SENSING, 2003, VOL. 24, NO. 8, 1709­1721 A system for monitoring NO 2 emissions from. In this paper we propose a system for monitoring abnormal NO 2 emissions in the troposphere by using remote tool for operational applications. 1. Introduction The European Remote Sensing Satellite (ERS

  10. Optimal Location of a Mobile Sensor Continuum for Environmental Monitoring

    E-Print Network [OSTI]

    Boyer, Edmond

    air pollution monitoring, seismic monitoring, or monitoring of large infrastructures in civil is proposed for the goal of optimal location of a mobile sensor continuum. The monitoring of pollution on a 2D or track distributed environmental phenomena (weather, seismic events, wildfires, air, soil or river

  11. Monitoring system including an electronic sensor platform and an interrogation transceiver

    DOE Patents [OSTI]

    Kinzel, Robert L.; Sheets, Larry R.

    2003-09-23T23:59:59.000Z

    A wireless monitoring system suitable for a wide range of remote data collection applications. The system includes at least one Electronic Sensor Platform (ESP), an Interrogator Transceiver (IT) and a general purpose host computer. The ESP functions as a remote data collector from a number of digital and analog sensors located therein. The host computer provides for data logging, testing, demonstration, installation checkout, and troubleshooting of the system. The IT transmits signals from one or more ESP's to the host computer to the ESP's. The IT host computer may be powered by a common power supply, and each ESP is individually powered by a battery. This monitoring system has an extremely low power consumption which allows remote operation of the ESP for long periods; provides authenticated message traffic over a wireless network; utilizes state-of-health and tamper sensors to ensure that the ESP is secure and undamaged; has robust housing of the ESP suitable for use in radiation environments; and is low in cost. With one base station (host computer and interrogator transceiver), multiple ESP's may be controlled at a single monitoring site.

  12. Characterization, monitoring, and sensor technology catalogue

    SciTech Connect (OSTI)

    Matalucci, R.V. [ed.] [Sandia National Labs., Albuquerque, NM (United States); Esparza-Baca, C.; Jimenez, R.D. [Applied Sciences Laboratory, Inc., Albuquerque, NM (United States)

    1995-12-01T23:59:59.000Z

    This document represents a summary of 58 technologies that are being developed by the Department of Energy`s (DOE`s) Office of Science and Technology (OST) to provide site, waste, and process characterization and monitoring solutions to the DOE weapons complex. The information was compiled to provide performance data on OST-developed technologies to scientists and engineers responsible for preparing Remedial Investigation/Feasibility Studies (RI/FSs) and preparing plans and compliance documents for DOE cleanup and waste management programs. The information may also be used to identify opportunities for partnering and commercialization with industry, DOE laboratories, other federal and state agencies, and the academic community. Each technology is featured in a format that provides: (1) a description, (2) technical performance data, (3) applicability, (4) development status, (5) regulatory considerations, (6) potential commercial applications, (7) intellectual property, and (8) points-of-contact. Technologies are categorized into the following areas: (1) Bioremediation Monitoring, (2) Decontamination and Decommissioning, (3) Field Analytical Laboratories, (4) Geophysical and Hydrologic Characterization, (5) Hazardous Inorganic Contaminant Analysis, (6) Hazardous Organic Contaminant Analysis, (7) Mixed Waste, (8) Radioactive Contaminant Analysis, (9) Remote Sensing,(10)Sampling and Drilling, (11) Statistically Guided Sampling, and (12) Tank Waste.

  13. ADHESIVE DISBOND MONITORING WITH MICROSTRUCTURED OPTICAL FIBER BRAGG GRATING SENSORS

    E-Print Network [OSTI]

    Boyer, Edmond

    ADHESIVE DISBOND MONITORING WITH MICROSTRUCTURED OPTICAL FIBER BRAGG GRATING SENSORS Sanne a sensing system that is based on a combination of 3 optical fiber sensors which are non optical fiber and feature an enhanced response to shear stress. The change in response of the sensors

  14. A Self-Calibrating Remote Control Chemical Monitoring System

    SciTech Connect (OSTI)

    Jessica Croft

    2007-06-01T23:59:59.000Z

    The Susie Mine, part of the Upper Tenmile Mining Area, is located in Rimini, MT about 15 miles southwest of Helena, MT. The Upper Tenmile Creek Mining Area is an EPA Superfund site with 70 abandoned hard rock mines and several residential yards prioritized for clean up. Water from the Susie mine flows into Tenmile Creek from which the city of Helena draws part of its water supply. MSE Technology Applications in Butte, Montana was contracted by the EPA to build a treatment system for the Susie mine effluent and demonstrate a system capable of treating mine waste water in remote locations. The Idaho National Lab was contracted to design, build and demonstrate a low maintenance self-calibrating monitoring system that would monitor multiple sample points, allow remote two-way communications with the control software and allow access to the collected data through a web site. The Automated Chemical Analysis Monitoring (ACAM) system was installed in December 2006. This thesis documents the overall design of the hardware, control software and website, the data collected while MSE-TA’s system was operational, the data collected after MSE-TA’s system was shut down and suggested improvements to the existing system.

  15. PREDICTIVE SIMULATION OF PIEZOELECTRIC WAFER ACTIVE SENSORS FOR STRUCTURAL HEALTH MONITORING

    E-Print Network [OSTI]

    Giurgiutiu, Victor

    1 PREDICTIVE SIMULATION OF PIEZOELECTRIC WAFER ACTIVE SENSORS FOR STRUCTURAL HEALTH MONITORING: structural health monitoring (SHM), piezoelectric wafer active sensors (PWAS), nondestructive evaluation (NDE sensors (PWAS) are lightweight and inexpensive enablers for structural health monitoring (SHM). After

  16. Characterization of Sensor Performance and Durability for Structural Health Monitoring Systems

    E-Print Network [OSTI]

    Giurgiutiu, Victor

    Characterization of Sensor Performance and Durability for Structural Health Monitoring Systems with regard to successfully implementing Structural Health Monitoring technologies in Air Force systems sensor system design and packaging. Keywords: Structural Health Monitoring, Piezo Wafer Active Sensors

  17. MICROSTRUCTURED OPTICAL FIBER BRAGG GRATING SENSORS FOR STRUCTURAL HEALTH MONITORING APPLICATIONS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    MICROSTRUCTURED OPTICAL FIBER BRAGG GRATING SENSORS FOR STRUCTURAL HEALTH MONITORING APPLICATIONS optical fiber Bragg grating (MOFBG) sensors for structural health monitoring applications. We then focus, optical fiber sensor, fiber Bragg grating, structural health monitoring INTRODUCTION Microstructured

  18. Development of Salt Marsh Monitoring Methodology Using Remote Sensing and GIS

    E-Print Network [OSTI]

    Wang, Y.Q. "Yeqiao"

    Development of Salt Marsh Monitoring Methodology Using Remote Sensing and GIS Y.Q. Wang, PI://www.ltrs.uri.edu #12;New Satellite Data in Salt Marsh Change Monitoring Given that salt marsh monitoring requires update the salt marsh maps are necessary. Recent development of high spatial resolution satellite remote

  19. E-Print Network 3.0 - australia remote monitoring Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    GIS. The University of New South Wales, Sydney, Australia Abstract- Recent advances in remote... . INTRODUCTION Monitoring forest physiological condition is ... Source: Merton,...

  20. Real-time processing of remote sensor data as applied to Arctic ice classification

    E-Print Network [OSTI]

    Permenter, James Austin

    1973-01-01T23:59:59.000Z

    REAL-TIME PROCESSING OF REMOTE SENSOR DATA AS APPLIED TO ARCTIC ICE CLASSIFICATION A Thesis by JAMES AUSTIN PERMENTER partial ! Submitted to the Graduate College of Texas A)M University in fulfillment of the requirement for the degree... of MASTER OF SCIENCE December 1973 Major Subject: Electrical Engineering REAL-TIME PROCESSING OF REMOTE SENSOR DATA AS APPLIED TO ARCTIC ICE CLASSIFICATION A Thesis by James Austin Permenter Approved as to style and content by: ] ( rman of Commi...

  1. An Environmental Monitoring System with Integrated Wired and Wireless Sensors

    E-Print Network [OSTI]

    Huang, Yan

    environmental monitoring cyber infrastruc- ture that features (1) soil moisture monitoring with flexible spatial Environmental Observatory (TEO) infrastructure [9] for long-term operation. The new WSN-based soil moistureAn Environmental Monitoring System with Integrated Wired and Wireless Sensors Jue Yang, Chengyang

  2. Hydrological consistency using multi-sensor remote sensing data for water and energy cycle studies

    E-Print Network [OSTI]

    Pan, Ming

    Hydrological consistency using multi-sensor remote sensing data for water and energy cycle studies and feedback of land surface and atmospheric processes over large space and time scales. Remote sensing-based variables including soil moisture (from AMSR-E), surface heat fluxes (from MODIS) and precipitation rates

  3. Remote Monitoring of the Structural Health of Hydrokinetic Composite Turbine Blades

    SciTech Connect (OSTI)

    J.L. Rovey

    2012-09-21T23:59:59.000Z

    A health monitoring approach is investigated for hydrokinetic turbine blade applications. In-service monitoring is critical due to the difficult environment for blade inspection and the cost of inspection downtime. Composite blade designs have advantages that include long life in marine environments and great control over mechanical properties. Experimental strain characteristics are determined for static loads and free-vibration loads. These experiments are designed to simulate the dynamic characteristics of hydrokinetic turbine blades. Carbon/epoxy symmetric composite laminates are manufactured using an autoclave process. Four-layer composite beams, eight-layer composite beams, and two-dimensional eight-layer composite blades are instrumented for strain. Experimental results for strain measurements from electrical resistance gages are validated with theoretical characteristics obtained from in-house finite-element analysis for all sample cases. These preliminary tests on the composite samples show good correlation between experimental and finite-element strain results. A health monitoring system is proposed in which damage to a composite structure, e.g. delamination and fiber breakage, causes changes in the strain signature behavior. The system is based on embedded strain sensors and embedded motes in which strain information is demodulated for wireless transmission. In-service monitoring is critical due to the difficult environment for blade inspection and the cost of inspection downtime. Composite blade designs provide a medium for embedding sensors into the blades for in-situ health monitoring. The major challenge with in-situ health monitoring is transmission of sensor signals from the remote rotating reference frame of the blade to the system monitoring station. In the presented work, a novel system for relaying in-situ blade health measurements in hydrokinetic systems is described and demonstrated. An ultrasonic communication system is used to transmit sensor data underwater from the rotating frame of the blade to a fixed relay station. Data are then broadcast via radio waves to a remote monitoring station. Results indicate that the assembled system can transmit simulated sensor data with an accuracy of ±5% at a maximum sampling rate of 500 samples/sec. A power investigation of the transmitter within the blade shows that continuous max-sampling operation is only possible for short durations (~days), and is limited due to the capacity of the battery power source. However, intermittent sampling, with long periods between samples, allows for the system to last for very long durations (~years). Finally, because the data transmission system can operate at a high sampling rate for short durations or at a lower sampling rate/higher duty cycle for long durations, it is well-suited for short-term prototype and environmental testing, as well as long-term commercially-deployed hydrokinetic machines.

  4. Oxygen sensor for monitoring gas mixtures containing hydrocarbons

    DOE Patents [OSTI]

    Ruka, R.J.; Basel, R.A.

    1996-03-12T23:59:59.000Z

    A gas sensor measures O{sub 2} content of a reformable monitored gas containing hydrocarbons, H{sub 2}O and/or CO{sub 2}, preferably in association with an electrochemical power generation system. The gas sensor has a housing communicating with the monitored gas environment and carries the monitored gas through an integral catalytic hydrocarbon reforming chamber containing a reforming catalyst, and over a solid electrolyte electrochemical cell used for sensing purposes. The electrochemical cell includes a solid electrolyte between a sensor electrode that is exposed to the monitored gas, and a reference electrode that is isolated in the housing from the monitored gas and is exposed to a reference gas environment. A heating element is also provided in heat transfer communication with the gas sensor. A circuit that can include controls operable to adjust operations via valves or the like is connected between the sensor electrode and the reference electrode to process the electrical signal developed by the electrochemical cell. The electrical signal varies as a measure of the equilibrium oxygen partial pressure of the monitored gas. Signal noise is effectively reduced by maintaining a constant temperature in the area of the electrochemical cell and providing a monitored gas at chemical equilibria when contacting the electrochemical cell. The output gas from the electrochemical cell of the sensor is fed back into the conduits of the power generating system. 4 figs.

  5. Oxygen sensor for monitoring gas mixtures containing hydrocarbons

    DOE Patents [OSTI]

    Ruka, Roswell J. (Pittsburgh, PA); Basel, Richard A. (Pittsburgh, PA)

    1996-01-01T23:59:59.000Z

    A gas sensor measures O.sub.2 content of a reformable monitored gas containing hydrocarbons H.sub.2 O and/or CO.sub.2, preferably in association with an electrochemical power generation system. The gas sensor has a housing communicating with the monitored gas environment and carries the monitored gas through an integral catalytic hydrocarbon reforming chamber containing a reforming catalyst, and over a solid electrolyte electrochemical cell used for sensing purposes. The electrochemical cell includes a solid electrolyte between a sensor electrode that is exposed to the monitored gas, and a reference electrode that is isolated in the housing from the monitored gas and is exposed to a reference gas environment. A heating element is also provided in heat transfer communication with the gas sensor. A circuit that can include controls operable to adjust operations via valves or the like is connected between the sensor electrode and the reference electrode to process the electrical signal developed by the electrochemical cell. The electrical signal varies as a measure of the equilibrium oxygen partial pressure of the monitored gas. Signal noise is effectively reduced by maintaining a constant temperature in the area of the electrochemical cell and providing a monitored gas at chemical equilibria when contacting the electrochemical cell. The output gas from the electrochemical cell of the sensor is fed back into the conduits of the power generating system.

  6. Inventing a Novel Sensor for Online Motor Monitoring | GE Global...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Inventing a Novel Sensor for Online Motor Monitoring Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new...

  7. Development of a wireless sensor unit for tunnel monitoring

    E-Print Network [OSTI]

    Cheekiralla, Sivaram M. S. L., 1980-

    2004-01-01T23:59:59.000Z

    In this thesis we describe the development of a wireless sensor module for tunnel monitoring. The tunnel in question is a part of the London Underground system. Construction of a new tunnel beneath the existing tunnel is ...

  8. Wireless Sensor Network for Monitoring of Historic Structures under Rehabilitation 

    E-Print Network [OSTI]

    Samuels, Julie Marie

    2012-02-14T23:59:59.000Z

    The use of a wireless sensor network (WSN) to monitor an historic structure under rehabilitation is the focus of this research. To thoroughly investigate the issue, two main objectives are addressed: the development of a reliable WSN tailored...

  9. Embedded Sensor Array Development for Composite Structure Integrity Monitoring

    SciTech Connect (OSTI)

    Kumar, A.; Bryan, W. L.; Clonts, L. G.; Franks, S.

    2007-06-26T23:59:59.000Z

    The purpose of this Cooperative Research and Development Agreement (CRADA) between UT-Battelle, LLC (the "Contractor") and Accellent Technologies, Inc. (the "Participant") was for the development of an embedded ultrasonic sensor system for composite structure integrity monitoring.

  10. Wireless Sensor Network for Monitoring of Historic Structures under Rehabilitation

    E-Print Network [OSTI]

    Samuels, Julie Marie

    2012-02-14T23:59:59.000Z

    The use of a wireless sensor network (WSN) to monitor an historic structure under rehabilitation is the focus of this research. To thoroughly investigate the issue, two main objectives are addressed: the development of a reliable WSN tailored...

  11. Wireless sensor systems and methods, and methods of monitoring structures

    DOE Patents [OSTI]

    Kunerth, Dennis C.; Svoboda, John M.; Johnson, James T.; Harding, L. Dean; Klingler, Kerry M.

    2007-02-20T23:59:59.000Z

    A wireless sensor system includes a passive sensor apparatus configured to be embedded within a concrete structure to monitor infiltration of contaminants into the structure. The sensor apparatus includes charging circuitry and a plurality of sensors respectively configured to measure environmental parameters of the structure which include information related to the infiltration of contaminants into the structure. A reader apparatus is communicatively coupled to the sensor apparatus, the reader apparatus being configured to provide power to the charging circuitry during measurements of the environmental parameters by the sensors. The reader apparatus is configured to independently interrogate individual ones of the sensors to obtain information measured by the individual sensors. The reader apparatus is configured to generate an induction field to energize the sensor apparatus. Information measured by the sensor apparatus is transmitted to the reader apparatus via a response signal that is superimposed on a return induction field generated by the sensor apparatus. Methods of monitoring structural integrity of the structure are also provided.

  12. Design and analysis of artifact-resistive finger photoplethysmographic sensors for vital sign monitoring

    E-Print Network [OSTI]

    Rhee, Sokwoo

    2000-01-01T23:59:59.000Z

    A miniaturized, telemetric, photoplethysmograph sensor for long-term, continuous monitoring is presented in this thesis. The sensor, called a "ring sensor," is attached to a finger base for monitoring beat-to-beat pulsation, ...

  13. Electrochemical NOx Sensor for Monitoring Diesel Emissions

    Broader source: Energy.gov (indexed) [DOE]

    advanced prototype built on an alumina substrate, provided by Ford, with an integrated heating element * Substrate packaged by U.S. automotive supplier into a commercial sensor...

  14. Potentiometric Sensor for Real-Time Remote Surveillance of Actinides in Molten Salts

    SciTech Connect (OSTI)

    Natalie J. Gese; Jan-Fong Jue; Brenda E. Serrano; Guy L. Fredrickson

    2012-07-01T23:59:59.000Z

    A potentiometric sensor is being developed at the Idaho National Laboratory for real-time remote surveillance of actinides during electrorefining of spent nuclear fuel. During electrorefining, fuel in metallic form is oxidized at the anode while refined uranium metal is reduced at the cathode in a high temperature electrochemical cell containing LiCl-KCl-UCl3 electrolyte. Actinides present in the fuel chemically react with UCl3 and form stable metal chlorides that accumulate in the electrolyte. This sensor will be used for process control and safeguarding of activities in the electrorefiner by monitoring the concentrations of actinides in the electrolyte. The work presented focuses on developing a solid-state cation conducting ceramic sensor for detecting varying concentrations of trivalent actinide metal cations in eutectic LiCl-KCl molten salt. To understand the basic mechanisms for actinide sensor applications in molten salts, gadolinium was used as a surrogate for actinides. The ß?-Al2O3 was selected as the solid-state electrolyte for sensor fabrication based on cationic conductivity and other factors. In the present work Gd3+-ß?-Al2O3 was prepared by ion exchange reactions between trivalent Gd3+ from GdCl3 and K+-, Na+-, and Sr2+-ß?-Al2O3 precursors. Scanning electron microscopy (SEM) was used for characterization of Gd3+-ß?-Al2O3 samples. Microfocus X-ray Diffraction (µ-XRD) was used in conjunction with SEM energy dispersive X-ray spectroscopy (EDS) to identify phase content and elemental composition. The Gd3+-ß?-Al2O3 materials were tested for mechanical and chemical stability by exposing them to molten LiCl-KCl based salts. The effect of annealing on the exchanged material was studied to determine improvements in material integrity post ion exchange. The stability of the ß?-Al2O3 phase after annealing was verified by µ-XRD. Preliminary sensor tests with different assembly designs will also be presented.

  15. Underground Coal Mine Monitoring with Wireless Sensor Networks

    E-Print Network [OSTI]

    Liu, Yunhao

    10 Underground Coal Mine Monitoring with Wireless Sensor Networks MO LI and YUNHAO LIU Hong Kong University of Science and Technology Environment monitoring in coal mines is an important application queries under instable circumstances. A prototype is deployed with 27 mica2 motes in a real coal mine. We

  16. Towards a smart sensor interface for wearable cough monitoring

    E-Print Network [OSTI]

    Odam, Kofi

    Towards a smart sensor interface for wearable cough monitoring Kofi Odame and Dingkun Du Thayer in a wearable cough monitoring device. In particular, the paper considers the issues of privacy, power is validated with simulation and measurement results. I. INTRODUCTION A cough is the most common condition

  17. A Wireless Sensor Network Air Pollution Monitoring System

    E-Print Network [OSTI]

    Khedo, Kavi K; Mungur, Avinash; Mauritius, University of; Mauritius,; 10.5121/ijwmn.2010.2203

    2010-01-01T23:59:59.000Z

    Sensor networks are currently an active research area mainly due to the potential of their applications. In this paper we investigate the use of Wireless Sensor Networks (WSN) for air pollution monitoring in Mauritius. With the fast growing industrial activities on the island, the problem of air pollution is becoming a major concern for the health of the population. We proposed an innovative system named Wireless Sensor Network Air Pollution Monitoring System (WAPMS) to monitor air pollution in Mauritius through the use of wireless sensors deployed in huge numbers around the island. The proposed system makes use of an Air Quality Index (AQI) which is presently not available in Mauritius. In order to improve the efficiency of WAPMS, we have designed and implemented a new data aggregation algorithm named Recursive Converging Quartiles (RCQ). The algorithm is used to merge data to eliminate duplicates, filter out invalid readings and summarise them into a simpler form which significantly reduce the amount of dat...

  18. Space Application of Piezoelectric Wafer Active Sensors for Structural Health Monitoring**

    E-Print Network [OSTI]

    Giurgiutiu, Victor

    Space Application of Piezoelectric Wafer Active Sensors for Structural Health Monitoring** V class of structural health monitoring (SHM) applications. This paper presents and discusses with conclusions and suggestions for further work. Key Words: structural health monitoring, piezoelectric, sensors

  19. Irrigation Monitoring with Soil Water Sensors 

    E-Print Network [OSTI]

    Enciso, Juan; Porter, Dana; Peries, Xavier

    2007-01-19T23:59:59.000Z

    Monitoring soil water content is essential if growers want to optimize production, conserve water, reduce environmental impacts and save money. This publication illustrates how soil moisture monitoring can improve irrigation decisions and how...

  20. Remotely controlled sensor apparatus for use in dig-face characterization system

    DOE Patents [OSTI]

    Josten, N.E.; Svoboda, J.M.

    1999-05-25T23:59:59.000Z

    A remotely controlled sensor platform apparatus useful in a dig-face characterization system is deployed from a mobile delivery device such as standard heavy construction equipment. The sensor apparatus is designed to stabilize sensors against extraneous motions induced by heavy equipment manipulations or other outside influences, and includes a terrain sensing and sensor elevation control system to maintain the sensors in close ground proximity. The deployed sensor apparatus is particularly useful in collecting data in work environments where human access is difficult due to the presence of hazardous conditions, rough terrain, or other circumstances that prevent efficient data collection by conventional methods. Such work environments include hazardous waste sites, unexploded ordnance sites, or construction sites. Data collection in these environments by utilizing the deployed sensor apparatus is desirable in order to protect human health and safety, or to assist in planning daily operations to increase efficiency. 13 figs.

  1. Remotely controlled sensor apparatus for use in dig-face characterization system

    DOE Patents [OSTI]

    Josten, Nicholas E. (Idaho Falls, ID); Svoboda, John M. (Idaho Falls, ID)

    1999-01-01T23:59:59.000Z

    A remotely controlled sensor platform apparatus useful in a dig-face characterization system is deployed from a mobile delivery device such as standard heavy construction equipment. The sensor apparatus is designed to stabilize sensors against extraneous motions induced by heavy equipment manipulations or other outside influences, and includes a terrain sensing and sensor elevation control system to maintain the sensors in close ground proximity. The deployed sensor apparatus is particularly useful in collecting data in work environments where human access is difficult due to the presence of hazardous conditions, rough terrain, or other circumstances that prevent efficient data collection by conventional methods. Such work environments include hazardous waste sites, unexploded ordnance sites, or construction sites. Data collection in these environments by utilizing the deployed sensor apparatus is desirable in order to protect human health and safety, or to assist in planning daily operations to increase efficiency.

  2. Irrigation Monitoring with Soil Water Sensors (Spanish) 

    E-Print Network [OSTI]

    Enciso, Juan; Porter, Dana; Peries, Xavier

    2007-07-25T23:59:59.000Z

    mejor c?mo programar el riego. En esta publicaci?n se presentan algunos conceptos b?sicos sobre la capacidad de almacenamiento del agua en el suelo, se describen los sensores seleccionados para monitorear el agua del suelo (incluyendo sondas de... capacitancia, bloques de yeso y tensi?metros), se enlistan las ventajas y desventajas de utilizar estos sensores y se presentan los conceptos b?sicos para la instalaci?n de los mismos. El mejorar el manejo del agua en sus cultivos, le permitir? conservar...

  3. Irrigation Monitoring with Soil Water Sensors (Spanish)

    E-Print Network [OSTI]

    Enciso, Juan; Porter, Dana; Peries, Xavier

    2007-07-25T23:59:59.000Z

    mejor c?mo programar el riego. En esta publicaci?n se presentan algunos conceptos b?sicos sobre la capacidad de almacenamiento del agua en el suelo, se describen los sensores seleccionados para monitorear el agua del suelo (incluyendo sondas de... capacitancia, bloques de yeso y tensi?metros), se enlistan las ventajas y desventajas de utilizar estos sensores y se presentan los conceptos b?sicos para la instalaci?n de los mismos. El mejorar el manejo del agua en sus cultivos, le permitir? conservar...

  4. Development of a special nuclear materials monitoring sensor pack for Project Straight-Line

    SciTech Connect (OSTI)

    Daily, M.R.; Moreno, D.J.; Tolk, K.M.; Wilcoxen, J.L. [Sandia National Labs., Albuquerque, NM (United States); Oetken, R.E.; Collins, J.E.; Miller, R.; Olsen, R.W. [Sandia National Labs., Livermore, CA (United States); Sheets, L. [Allied-Signal, Kansas City, MO (United States). Kansas City Division

    1995-12-31T23:59:59.000Z

    With the end of the Cold War and the accelerated dismantlement of nuclear weapons, the nuclear material inventory of the United States is growing. In addition, the United States has offered these excess weapons-grade nuclear material assets for international inspections with the intent of encouraging reciprocal action by other nations. In support of this policy, Sandia National Laboratories has initiated a pilot effort (Project Straight-Line) to develop a flexible, site-independent system to continuously and remotely monitor stored nuclear material and integrate the collection, processing, and dissemination of information regarding this material to ensure that declared nuclear materials placed in storage remain in place, unaltered, and stable. As part of this effort, a +3.6V battery powered, modular sensor pack has been developed to monitor total radiation dose, radiation dose rate, and the temperature of each nuclear material container and to provide this information using a standardized sensor interface. This paper will discuss the development of the sensors, the engineering and production of the sensor pack units, and their installation and operation at sites in New Mexico, California, and the Pantex plant in Amarillo.

  5. Electrochemical sensor for monitoring electrochemical potentials of fuel cell components

    DOE Patents [OSTI]

    Kunz, Harold R. (Vernon, CT); Breault, Richard D. (Coventry, CT)

    1993-01-01T23:59:59.000Z

    An electrochemical sensor comprised of wires, a sheath, and a conduit can be utilized to monitor fuel cell component electric potentials during fuel cell shut down or steady state. The electrochemical sensor contacts an electrolyte reservoir plate such that the conduit wicks electrolyte through capillary action to the wires to provide water necessary for the electrolysis reaction which occurs thereon. A voltage is applied across the wires of the electrochemical sensor until hydrogen evolution occurs at the surface of one of the wires, thereby forming a hydrogen reference electrode. The voltage of the fuel cell component is then determined with relation to the hydrogen reference electrode.

  6. Prediction Aggregation of Remote Traffic Microwave Sensors Speed and Volume Data

    E-Print Network [OSTI]

    Havlicek, Joebob

    Prediction Aggregation of Remote Traffic Microwave Sensors Speed and Volume Data John R. Junger prediction is an important component of well developed Intelligent Trans- portation Systems and Advanced significant challenges to integrating polled data into such a predictive system. To overcome these, we present

  7. Energy Harvesting for Structural Health Monitoring Sensor Gyuhae Park1

    E-Print Network [OSTI]

    Simunic, Tajana

    for large-scale alternative energy generation using wind turbines and solar cells is mature technologyEnergy Harvesting for Structural Health Monitoring Sensor Networks Gyuhae Park1 , Tajana Rosing2 of California, San Diego La Jolla, CA 92093-0701 ABSTRACT This paper reviews the development of energy

  8. Continuous K-Means Monitoring with Low Reporting Cost in Sensor Networks

    E-Print Network [OSTI]

    Morik, Katharina

    Continuous K-Means Monitoring with Low Reporting Cost in Sensor Networks Ming Hua, Man Ki Lau, Jian an interesting problem: continuously monitoring k-means clustering of sensor readings in a large sensor network. Given a set of sensors whose readings evolve over time, we want to maintain the k-means of the readings

  9. The Use of Remote Cameras to Monitor Traffic Activity

    E-Print Network [OSTI]

    Padilla Paniagua, Manuel Antonio

    2013-12-09T23:59:59.000Z

    Remote Infrared-triggered cameras are commonly used in wildlife management research. Cameras are used for population estimates, identification, and behavioral observations. Road systems are an important factor in wildlife management research...

  10. Wireless, automated monitoring for potential landslide hazards 

    E-Print Network [OSTI]

    Garich, Evan Andrew

    2007-09-17T23:59:59.000Z

    . Commercially available soil moisture probes and soil tilt sensors were combined with low-power, wireless data transmitters to form a self-configuring network of soil monitoring sensors. The remote locations of many slope stability hazard sites eliminates...

  11. Characterization, monitoring, and sensor technology crosscutting program: Technology summary

    SciTech Connect (OSTI)

    NONE

    1995-06-01T23:59:59.000Z

    The purpose of the Characterization, Monitoring, and Sensor Technology Crosscutting Program (CMST-CP) is to deliver appropriate characterization, monitoring, and sensor technology (CMST) to the Office of Waste Management (EM-30), the Office of Environmental Restoration (EM-40), and the Office of Facility Transition and Management (EM-60). The technology development must also be cost effective and appropriate to EM-30/40/60 needs. Furthermore, the required technologies must be delivered and implemented when needed. Accordingly, and to ensure that available DOE and other national resources are focused an the most pressing needs, management of the technology development is concentrated on the following Focus Areas: Contaminant Plume Containment and Remediation (PFA); Landfill Stabilization (LSFA); High-Level Waste Tank Remediation (TFA); Mixed Waste Characterization, Treatment, and Disposal (MWFA); and Facility Deactivation, Decommissioning, and Material Disposition (FDDMDFA). Brief descriptions of CMST-CP projects funded in FY95 are presented.

  12. BANip: enabling remote healthcare monitoring with Body Area Networks1

    E-Print Network [OSTI]

    Widya, Ing

    for patients that aggregates healthcare services from collaborative care centers. Our service platform Area Network (BAN) to remote healthcare center. Introduction Information and Communication Technology of 2.5/3G wireless technology even takes healthcare further to mobile healthcare (m-health) which

  13. Finite Element Simulation of Piezoelectric Wafer Active Sensors for Structural Health Monitoring with Coupled-Filed

    E-Print Network [OSTI]

    Giurgiutiu, Victor

    Finite Element Simulation of Piezoelectric Wafer Active Sensors for Structural Health Monitoring) is emerging as an effective and powerful technique in structural health monitoring (SHM). Modeling to analytical calculation and experimental data. Key words: Structural Health Monitoring, PWAS, finite element

  14. Structural Health Monitoring with Piezoelectric Wafer Active Sensors for Space Applications

    E-Print Network [OSTI]

    Giurgiutiu, Victor

    Structural Health Monitoring with Piezoelectric Wafer Active Sensors for Space Applications Adrian detection and structural health monitoring. Where appropriate, comparison between different methods-coupling coefficient I. Introduction STRUCTURAL health monitoring (SHM) is an emerging research area with multiple

  15. Wireless Sensor Network for Electric Transmission Line Monitoring

    SciTech Connect (OSTI)

    Alphenaar, Bruce

    2009-06-30T23:59:59.000Z

    Generally, federal agencies tasked to oversee power grid reliability are dependent on data from grid infrastructure owners and operators in order to obtain a basic level of situational awareness. Since there are many owners and operators involved in the day-to-day functioning of the power grid, the task of accessing, aggregating and analyzing grid information from these sources is not a trivial one. Seemingly basic tasks such as synchronizing data timestamps between many different data providers and sources can be difficult as evidenced during the post-event analysis of the August 2003 blackout. In this project we investigate the efficacy and cost effectiveness of deploying a network of wireless power line monitoring devices as a method of independently monitoring key parts of the power grid as a complement to the data which is currently available to federal agencies from grid system operators. Such a network is modeled on proprietary power line monitoring technologies and networks invented, developed and deployed by Genscape, a Louisville, Kentucky based real-time energy information provider. Genscape measures transmission line power flow using measurements of electromagnetic fields under overhead high voltage transmission power lines in the United States and Europe. Opportunities for optimization of the commercial power line monitoring technology were investigated in this project to enable lower power consumption, lower cost and improvements to measurement methodologies. These optimizations were performed in order to better enable the use of wireless transmission line monitors in large network deployments (perhaps covering several thousand power lines) for federal situational awareness needs. Power consumption and cost reduction were addressed by developing a power line monitor using a low power, low cost wireless telemetry platform known as the ''Mote''. Motes were first developed as smart sensor nodes in wireless mesh networking applications. On such a platform, it has been demonstrated in this project that wireless monitoring units can effectively deliver real-time transmission line power flow information for less than $500 per monitor. The data delivered by such a monitor has during the course of the project been integrated with a national grid situational awareness visualization platform developed by Oak Ridge National Laboratory. Novel vibration energy scavenging methods based on piezoelectric cantilevers were also developed as a proposed method to power such monitors, with a goal of further cost reduction and large-scale deployment. Scavenging methods developed during the project resulted in 50% greater power output than conventional cantilever-based vibrational energy scavenging devices typically used to power smart sensor nodes. Lastly, enhanced and new methods for electromagnetic field sensing using multi-axis magnetometers and infrared reflectometry were investigated for potential monitoring applications in situations with a high density of power lines or high levels of background 60 Hz noise in order to isolate power lines of interest from other power lines in close proximity. The goal of this project was to investigate and demonstrate the feasibility of using small form factor, highly optimized, low cost, low power, non-contact, wireless electric transmission line monitors for delivery of real-time, independent power line monitoring for the US power grid. The project was divided into three main types of activity as follows; (1) Research into expanding the range of applications for non-contact power line monitoring to enable large scale low cost sensor network deployments (Tasks 1, 2); (2) Optimization of individual sensor hardware components to reduce size, cost and power consumption and testing in a pilot field study (Tasks 3,5); and (3) Demonstration of the feasibility of using the data from the network of power line monitors via a range of custom developed alerting and data visualization applications to deliver real-time information to federal agencies and others tasked with grid reliability (Tasks 6,8)

  16. Remote area wind energy harvesting for low-power autonomous sensors Abstract--A growing demand for deployment of autonomous

    E-Print Network [OSTI]

    Remote area wind energy harvesting for low-power autonomous sensors Abstract--A growing demand for localized, independent energy harvesting capabilities for each node. In this paper, a method of remote area wind energy harvesting is presented, with a focus on an anemometer-based solution. By utilizing

  17. Monitoring Urban Brownfields using Remote Sensing and GISMonitoring Urban Brownfields using Remote Sensing and GIS Ellen BanzhafEllen Banzhaf 1 21 2

    E-Print Network [OSTI]

    Hall, Sharon J.

    Monitoring Urban Brownfields using Remote Sensing and GISMonitoring Urban Brownfields using Remote Leipzig,04318 Leipzig, elba@alok.ufz.deelba@alok.ufz.de What are Brownfields ? EPA defines Brownfields is complicated by real or perceived environmental contamination" (http://www.epa.gov/epahome/hi-brownfields

  18. The Design and Evaluation of a Wireless Sensor Network for Mine Safety Monitoring

    E-Print Network [OSTI]

    Huang, Changcheng

    The Design and Evaluation of a Wireless Sensor Network for Mine Safety Monitoring Xiaoguang Niu12 sensor network for mine safety monitoring. Based on the characteristics of underground mine gallery overhead with a well-bounded offset error for large-scale sensor networks. This mechanism is easy

  19. VALIDATION AND VERIFICATION OF CMST-CP REMOTE SURVEILLANCE SENSORS

    SciTech Connect (OSTI)

    M.A. Ebadian, Ph.D.

    1999-01-01T23:59:59.000Z

    In its original form, this project was intended to utilize the capabilities of the Analytical Laboratory at Florida International University's Hemispheric Center for Environmental Technology (FIU-HCET) to carry out validation and verification of data obtained in the field for purposes of characterization, monitoring, and sensing in relation to closure and post-closure of various sites throughout the DOE complex. To do this, technologies were to be identified that had already been deployed and had produced field data. The role of the FIU-HCET Analytical Laboratory was considered first as part of a round robin team with other laboratories or, alternatively, to act as an objective third-party laboratory in evaluating validation data by others. Shortly after the onset of the project, FIU-HCET determined that specific deployed technologies were not readily identifiable. Thus, the direction of the project was changed to one in which the FKJ-HCET Analytical Laboratory would investigate DOE needs that require validation. These needs were examined primarily on the Internet, as listed by each specific site. In addition, needs having validation implications for regulatory agencies, such as the EPA, were also investigated. Furthermore, contact was made with laboratories with which the FIU-HCET Analytical Laboratory could act in a round robin or third-party capacity. Included in this report are potentially deployable technologies that would lend themselves to validation and verification of field data. FIU-HCET intends to monitor the deployment of these technologies with a view toward carrying out the validation activities originally proposed.

  20. Fine-Grained Remote Monitoring, Control and Pre-Paid Electrical Service in Rural Microgrids

    E-Print Network [OSTI]

    Goldstein, Seth Copen

    Fine-Grained Remote Monitoring, Control and Pre-Paid Electrical Service in Rural Microgrids Maxim microgrid deployment in rural Les Anglais, Haiti. The system consists of a three-tiered architecture,arthur}@earthsparkinternational.org Abstract--In this paper, we present the architecture, design and experiences from a wirelessly managed

  1. AT&T Remote Patient Monitoring Solutions Software as a Service (RPMSaaS) helps

    E-Print Network [OSTI]

    Fisher, Kathleen

    way to provide outpatient care. Fortunately, healthcare reform and the Affordable Care Act allow new-time remote patient monitoring software. RPM­SaaS automates post-discharge care through interactive mobile patient access, clinical caregivers may intervene to avoid acute health problems, as well as provide

  2. Structural health monitoring with piezoelectric wafer active sensors predictive modeling and simulation

    E-Print Network [OSTI]

    Giurgiutiu, Victor

    Structural health monitoring with piezoelectric wafer active sensors ­ predictive modeling of the state of the art in structural health monitoring with piezoelectric wafer active sensors and follows with conclusions and suggestions for further work Key Words: structural health monitoring, SHM, nondestructive

  3. APPROACH TO HEALTH MONITORING OFAN AIRCRAFT STRUCTURE WITH RESISTIVE LADDER SENSORS DURING

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    APPROACH TO HEALTH MONITORING OFAN AIRCRAFT STRUCTURE WITH RESISTIVE LADDER SENSORS DURING FULL ladder sensors for health monitoring of an aircraft structure. Cracks forming can affect significantly and its size determination is one of the basic aims for Structural Health Monitoring (SHM) system

  4. Demo: On the High Quality Sensor Placement for Structural Health Monitoring

    E-Print Network [OSTI]

    Wang, Dan

    Demo: On the High Quality Sensor Placement for Structural Health Monitoring Bo Li Dept. of Civil for structural health monitoring systems today. Existing studies on sensor systems from computer science associated with these techniques less useful. We consider the structural health monitoring (SHM) appli

  5. Towards a Tailored Sensor Network for Fire Emergency Monitoring in Large buildings 

    E-Print Network [OSTI]

    Upadhyay, Rochan

    2007-10-02T23:59:59.000Z

    In this presentation, we describe some of the ongoing efforts in developing a wireless sensor network tailored specifically for fire emergency monitoring. Network simulations of a dense sensor network with a flat architecture ...

  6. A retrofit 60 Hz current sensor for non-intrusive power monitoring at the circuit breaker

    E-Print Network [OSTI]

    Clifford, Zachary

    We present a new sensor for power monitoring that measures current flow in a circuit breaker without permanent modification of the breaker panel or the circuit breaker itself. The sensor consists of three parts: an inductive ...

  7. Networked Computing in Wireless Sensor Networks for Structural Health Monitoring

    E-Print Network [OSTI]

    Jindal, Apoorva

    2010-01-01T23:59:59.000Z

    This paper studies the problem of distributed computation over a network of wireless sensors. While this problem applies to many emerging applications, to keep our discussion concrete we will focus on sensor networks used for structural health monitoring. Within this context, the heaviest computation is to determine the singular value decomposition (SVD) to extract mode shapes (eigenvectors) of a structure. Compared to collecting raw vibration data and performing SVD at a central location, computing SVD within the network can result in significantly lower energy consumption and delay. Using recent results on decomposing SVD, a well-known centralized operation, into components, we seek to determine a near-optimal communication structure that enables the distribution of this computation and the reassembly of the final results, with the objective of minimizing energy consumption subject to a computational delay constraint. We show that this reduces to a generalized clustering problem; a cluster forms a unit on w...

  8. Development of a 1 x N Fiber Optic Sensor Array for Carbon Sequestration Site Monitoring

    SciTech Connect (OSTI)

    Repasky, Kevin

    2013-09-30T23:59:59.000Z

    A fiber sensor array for sub-surface CO{sub 2} concentrations measurements was developed for monitoring geologic carbon sequestration sites. The fiber sensor array uses a single temperature tunable distributed feedback (DFB) laser operating with a nominal wavelength of 2.004 􀁐m. Light from this DFB laser is direct to one of the 4 probes via an in-line 1 x 4 fiber optic switch. Each of the 4 probes are buried and allow the sub-surface CO{sub 2} to enter the probe through Millipore filters that allow the soil gas to enter the probe but keeps out the soil and water. Light from the DFB laser interacts with the CO{sub 2} before it is directed back through the in-line fiber optic switch. The DFB laser is tuned across two CO{sub 2} absorption features where a transmission measurement is made allowing the CO{sub 2} concentration to be retrieved. The fiber optic switch then directs the light to the next probe where this process is repeated allowing sub-surface CO{sub 2} concentration measurements at each of the probes to be made as a function of time. The fiber sensor array was deployed for fifty-eight days beginning June 19, 2012 at the Zero Emission Research Technology (ZERT) field site where sub-surface CO{sub 2} concentrations were monitored. Background measurements indicate the fiber sensor array can monitor background levels as low as 1,000 parts per million (ppm). A thirty four day sub-surface release of 0.15 tones CO{sub 2}/day began on July 10, 2012. The elevated subsurface CO{sub 2} concentration was easily detected by each of the four probes with values ranging to over 60,000 ppm, a factor of greater than 6 higher than background measurements. The fiber sensor array was also deploy at the Big Sky Carbon Sequestration Partnership (BSCSP) site in north-central Montana between July 9th and August 7th, 2013 where background measurements were made in a remote sequestration site with minimal infrastructure. The project provided opportunities for two graduate students to participate in research directly related to geologic carbon sequestration. Furthermore, commercialization of the technology developed is being pursued with five different companies via the Department of energy SBIR/STTR program

  9. Wireless Sensor Network forWireless Sensor Network for Aircraft Health MonitoringAircraft Health Monitoring

    E-Print Network [OSTI]

    Atiquzzaman, Mohammed

    Monitoring Technologies presented here are patent pending. For more details, please send emails to haowei.bai@honeywell.com Haowei Bai Honeywell Labs 3660 Technology Drive Minneapolis, MN 55418 Phone: 612-951-7107 Email: haowei.bai@honeywell Technologies presented here are patent pending. For more details, please send emails to haowei.bai@honeywell

  10. The application of fiber optic sensors to the monitoring of roller element bearing systems 

    E-Print Network [OSTI]

    Juarez, Juan Carlos

    2002-01-01T23:59:59.000Z

    A rotating machinery test rig was instrumented with fiber optic Fabry-Perot Interferometer (FFPI) strain sensors for condition monitoring of rolling element bearings. Wavelength division multiplexing (WDM) was utilized to simultaneously monitor...

  11. Ris-R-1336(EN) Fundamentals for Remote Structural

    E-Print Network [OSTI]

    Risř-R-1336(EN) Fundamentals for Remote Structural Health Monitoring of Wind Turbine Blades) Fundamentals for Remote Structural Health Monitoring of Wind Turbine Blades - a Preproject Bent F. Sřrensen for the sensors capability to detect the most important damage types in wind turbine blades. Three different

  12. Ris-R-1340(EN) Fundamentals for Remote Structural

    E-Print Network [OSTI]

    Risř-R-1340(EN) Fundamentals for Remote Structural Health Monitoring of Wind Turbine Blades ­ a Preproject Annex A ­ Cost-Benefit for Embedded Sensors in Large Wind Turbine Blades Lars Gottlieb Hansen for Remote Structural Health Monitoring of Wind Turbine Blades - a Preproject Annex A - Cost

  13. MECHANICAL VIBRATION SENSING FOR STRUCTURAL HEALTH MONITORING USING A MILLIMETER-WAVE DOPPLER RADAR SENSOR

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    MECHANICAL VIBRATION SENSING FOR STRUCTURAL HEALTH MONITORING USING A MILLIMETER-WAVE DOPPLER RADAR of structural health monitoring (SHM). In this paper, we report on a millimeter-wave Doppler radar sensor sensing, millimeter-waves, structural health monitoring. INTRODUCTION Structural health monitoring based

  14. Design Considerations for a Large-Scale Wireless Sensor Network for Substation Monitoring

    E-Print Network [OSTI]

    Nasipuri, Asis

    effective monitoring applications for the substation using low-cost wireless sensor nodes that can sustainDesign Considerations for a Large-Scale Wireless Sensor Network for Substation Monitoring Asis University City Blvd. Charlotte, NC 28223 Luke Van der Zel and Bienvenido Rodriguez Substations Group EPRI

  15. Cover sheet Real-time health monitoring of historic buildings with wireless sensor networks

    E-Print Network [OSTI]

    Picco, Gian Pietro

    Cover sheet Title: Real-time health monitoring of historic buildings with wireless sensor networks of a wireless sensor network (WSN) in Torre Aquila, a 31 meter-tall medieval tower located in the city of Trento agreement. INTRODUCTION Wireless sensors and wireless sensing networks, due to their low installation cost

  16. Fibre optic sensor for continuous health monitoring in CFRP composite materials

    E-Print Network [OSTI]

    Fibre optic sensor for continuous health monitoring in CFRP composite materials Laurent Rippert on this material. In this research study, fibre optic sensors will be proven to offer an alternative for the robust a quite simple microbend optical sensor contains information on the elastic energy released whenever

  17. REQUIREMENTS TO ESTABLISH FIBRE-OPTIC SENSORS FOR MONITORING OF STRUCTURES

    E-Print Network [OSTI]

    Boyer, Edmond

    REQUIREMENTS TO ESTABLISH FIBRE-OPTIC SENSORS FOR MONITORING OF STRUCTURES Wolfgang Habel, Vivien-12205 Berlin wolfgang.habel@bam.de ABSTRACT Fibre-optic sensors need to be more established examples where fibre-optic sensors provide outstanding knowledge about the structure's behaviour

  18. Use of Remote Technology in the Surface Water Environmental Monitoring Program at SRS Reducing Measurements in the Field - 13336

    SciTech Connect (OSTI)

    Eddy, T.; Terry, B.; Meyer, A.; Hall, J.; Allen, P.; Hughey, D.; Hartley, T. [Savannah River Nuclear Solutions, Savannah River Site, Aiken, SC 29808 (United States)] [Savannah River Nuclear Solutions, Savannah River Site, Aiken, SC 29808 (United States)

    2013-07-01T23:59:59.000Z

    There are a wide range of sensor and remote technology applications available for use in environmental monitoring programs. Each application has its own set of limitations and can be challenging when attempting to utilize it under diverse environmental field conditions. The Savannah River Site Environmental Monitoring Program has implemented several remote sensing and surface water flow technologies that have increased the quality of the data while reducing the number of field measurements. Implementation of this technology reduced the field time for personnel that commute across the Savannah River Site (SRS) over a span of 310 square miles. The wireless surface water flow technology allows for immediate notification of changing field conditions or equipment failure thus reducing data-loss or erroneous field data and improving data-quality. This wireless flow technology uses the stage-to-flow methodology coupled with implementation of a robust highly accurate Acoustic Doppler Profiler system for measuring discharge under various field conditions. Savings for implementation of the wireless flow application and Flowlink{sup R} technology equates to approximately 1175 hours annually for the radiological liquid effluent and surveillance programs. The SonTek River Suveyor and Flowtracker technologies are utilized for calibration of the wireless flow monitoring devices in the site streams and validation of effluent flows at the SRS. Implementation of similar wireless devices is also planned in the National Pollutant Discharge Elimination System (NPDES) Storm-water Monitoring Program. SRS personnel have been developing a unique flow actuator device. This device activates an ISCO{sup TM} automated sampler under flowing conditions at storm-water outfall locations across the site. This technology is unique in that it was designed to be used under field conditions with rapid changes in flow and sedimentation where traditional actuators have been unsuccessful in tripping the automated sampler. In addition, automated rain gauges will be tied into this technology for immediate notification of rain at storm-water locations further enhancing the automation of environmental data collection. These technological improvements at SRS have led to data-quality improvements while reducing the field technician time in the field and costs for maintaining the traditional environmental monitoring applications. (authors)

  19. Hallway Monitoring: Distributed Data Processing with Wireless Sensor Networks

    E-Print Network [OSTI]

    Baumgartner, Tobias

    infrared sensors (PIRs), con- nected to 30 wireless sensor nodes. There are also 29 LEDs and speakers, development, and evaluation of higher-level algorithms in real de- ployments in which sensor nodes can share, and 29 passive infrared sensors (PIRs) for motion detection. The construction of the load sensors has

  20. System for monitoring an industrial process and determining sensor status

    DOE Patents [OSTI]

    Gross, K.C.; Hoyer, K.K.; Humenik, K.E.

    1995-10-17T23:59:59.000Z

    A method and system for monitoring an industrial process and a sensor are disclosed. The method and system include generating a first and second signal characteristic of an industrial process variable. One of the signals can be an artificial signal generated by an auto regressive moving average technique. After obtaining two signals associated with one physical variable, a difference function is obtained by determining the arithmetic difference between the two pairs of signals over time. A frequency domain transformation is made of the difference function to obtain Fourier modes describing a composite function. A residual function is obtained by subtracting the composite function from the difference function and the residual function (free of nonwhite noise) is analyzed by a statistical probability ratio test. 17 figs.

  1. System for monitoring an industrial process and determining sensor status

    DOE Patents [OSTI]

    Gross, K.C.; Hoyer, K.K.; Humenik, K.E.

    1997-05-13T23:59:59.000Z

    A method and system are disclosed for monitoring an industrial process and a sensor. The method and system include generating a first and second signal characteristic of an industrial process variable. One of the signals can be an artificial signal generated by an auto regressive moving average technique. After obtaining two signals associated with one physical variable, a difference function is obtained by determining the arithmetic difference between the two pairs of signals over time. A frequency domain transformation is made of the difference function to obtain Fourier modes describing a composite function. A residual function is obtained by subtracting the composite function from the difference function and the residual function (free of nonwhite noise) is analyzed by a statistical probability ratio test. 17 figs.

  2. System for monitoring an industrial process and determining sensor status

    DOE Patents [OSTI]

    Gross, Kenneth C. (Bolingbrook, IL); Hoyer, Kristin K. (Chicago, IL); Humenik, Keith E. (Columbia, MD)

    1995-01-01T23:59:59.000Z

    A method and system for monitoring an industrial process and a sensor. The method and system include generating a first and second signal characteristic of an industrial process variable. One of the signals can be an artificial signal generated by an auto regressive moving average technique. After obtaining two signals associated with one physical variable, a difference function is obtained by determining the arithmetic difference between the two pairs of signals over time. A frequency domain transformation is made of the difference function to obtain Fourier modes describing a composite function. A residual function is obtained by subtracting the composite function from the difference function and the residual function (free of nonwhite noise) is analyzed by a statistical probability ratio test.

  3. System for monitoring an industrial process and determining sensor status

    DOE Patents [OSTI]

    Gross, Kenneth C. (Bolingbrook, IL); Hoyer, Kristin K. (Chicago, IL); Humenik, Keith E. (Columbia, MD)

    1997-01-01T23:59:59.000Z

    A method and system for monitoring an industrial process and a sensor. The method and system include generating a first and second signal characteristic of an industrial process variable. One of the signals can be an artificial signal generated by an auto regressive moving average technique. After obtaining two signals associated with one physical variable, a difference function is obtained by determining the arithmetic difference between the two pairs of signals over time. A frequency domain transformation is made of the difference function to obtain Fourier modes describing a composite function. A residual function is obtained by subtracting the composite function from the difference function and the residual function (free of nonwhite noise) is analyzed by a statistical probability ratio test.

  4. Thermoelectric powered wireless sensors for spent fuel monitoring

    SciTech Connect (OSTI)

    Carstens, T.; Corradini, M.; Blanchard, J. [Dept. of Engineering Physics, Univ. of Wisconsin-Madison, Madison, WI 53706 (United States); Ma, Z. [Dept. of Electrical and Computer Engineering, Univ. of Wisconsin-Madison, Madison, WI 53706 (United States)

    2011-07-01T23:59:59.000Z

    This paper describes using thermoelectric generators to power wireless sensors to monitor spent nuclear fuel during dry-cask storage. OrigenArp was used to determine the decay heat of the spent fuel at different times during the service life of the dry-cask. The Engineering Equation Solver computer program modeled the temperatures inside the spent fuel storage facility during its service life. The temperature distribution in a thermoelectric generator and heat sink was calculated using the computer program Finite Element Heat Transfer. From these temperature distributions the power produced by the thermoelectric generator was determined as a function of the service life of the dry-cask. In addition, an estimation of the path loss experienced by the wireless signal can be made based on materials and thickness of the structure. Once the path loss is known, the transmission power and thermoelectric generator power requirements can be determined. This analysis estimates that a thermoelectric generator can produce enough power for a sensor to function and transmit data from inside the dry-cask throughout its service life. (authors)

  5. Monitor and control of cockroach locomotion with piezoelectric sensors 

    E-Print Network [OSTI]

    Cooper, Rodrigo Alejandro

    2009-05-15T23:59:59.000Z

    sensors; laboratory in vitro testing of sensors and cockroaches; and methodology to control them. This research successfully built an experimental foundation for sensor and roach testing and developed a methodology for roach locomotion control...

  6. Monitor and control of cockroach locomotion with piezoelectric sensors

    E-Print Network [OSTI]

    Cooper, Rodrigo Alejandro

    2009-05-15T23:59:59.000Z

    sensors; laboratory in vitro testing of sensors and cockroaches; and methodology to control them. This research successfully built an experimental foundation for sensor and roach testing and developed a methodology for roach locomotion control...

  7. Mobile sensor network to monitor wastewater collection pipelines

    E-Print Network [OSTI]

    Lim, Jungsoo

    2012-01-01T23:59:59.000Z

    SewerSnort gas sensor board evaluation . . . . . . . . .8.1 SewerSnort gas sensor board evaluation In our previousFigure 8.6: Gas sensor board evaluation scenario and

  8. Application of Condition-Based Monitoring Techniques for Remote Monitoring of a Simulated Gas Centrifuge Enrichment Plant

    SciTech Connect (OSTI)

    Hooper, David A [ORNL; Henkel, James J [ORNL; Whitaker, Michael [ORNL

    2012-01-01T23:59:59.000Z

    This paper presents research into the adaptation of monitoring techniques from maintainability and reliability (M&R) engineering for remote unattended monitoring of gas centrifuge enrichment plants (GCEPs) for international safeguards. Two categories of techniques are discussed: the sequential probability ratio test (SPRT) for diagnostic monitoring, and sequential Monte Carlo (SMC or, more commonly, particle filtering ) for prognostic monitoring. Development and testing of the application of condition-based monitoring (CBM) techniques was performed on the Oak Ridge Mock Feed and Withdrawal (F&W) facility as a proof of principle. CBM techniques have been extensively developed for M&R assessment of physical processes, such as manufacturing and power plants. These techniques are normally used to locate and diagnose the effects of mechanical degradation of equipment to aid in planning of maintenance and repair cycles. In a safeguards environment, however, the goal is not to identify mechanical deterioration, but to detect and diagnose (and potentially predict) attempts to circumvent normal, declared facility operations, such as through protracted diversion of enriched material. The CBM techniques are first explained from the traditional perspective of maintenance and reliability engineering. The adaptation of CBM techniques to inspector monitoring is then discussed, focusing on the unique challenges of decision-based effects rather than equipment degradation effects. These techniques are then applied to the Oak Ridge Mock F&W facility a water-based physical simulation of a material feed and withdrawal process used at enrichment plants that is used to develop and test online monitoring techniques for fully information-driven safeguards of GCEPs. Advantages and limitations of the CBM approach to online monitoring are discussed, as well as the potential challenges of adapting CBM concepts to safeguards applications.

  9. A Review of Sensor Calibration Monitoring for Calibration Interval Extension in Nuclear Power Plants

    SciTech Connect (OSTI)

    Coble, Jamie B.; Meyer, Ryan M.; Ramuhalli, Pradeep; Bond, Leonard J.; Hashemian, Hash; Shumaker, Brent; Cummins, Dara

    2012-08-31T23:59:59.000Z

    Currently in the United States, periodic sensor recalibration is required for all safety-related sensors, typically occurring at every refueling outage, and it has emerged as a critical path item for shortening outage duration in some plants. Online monitoring can be employed to identify those sensors that require calibration, allowing for calibration of only those sensors that need it. International application of calibration monitoring, such as at the Sizewell B plant in United Kingdom, has shown that sensors may operate for eight years, or longer, within calibration tolerances. This issue is expected to also be important as the United States looks to the next generation of reactor designs (such as small modular reactors and advanced concepts), given the anticipated longer refueling cycles, proposed advanced sensors, and digital instrumentation and control systems. The U.S. Nuclear Regulatory Commission (NRC) accepted the general concept of online monitoring for sensor calibration monitoring in 2000, but no U.S. plants have been granted the necessary license amendment to apply it. This report presents a state-of-the-art assessment of online calibration monitoring in the nuclear power industry, including sensors, calibration practice, and online monitoring algorithms. This assessment identifies key research needs and gaps that prohibit integration of the NRC-approved online calibration monitoring system in the U.S. nuclear industry. Several needs are identified, including the quantification of uncertainty in online calibration assessment; accurate determination of calibration acceptance criteria and quantification of the effect of acceptance criteria variability on system performance; and assessment of the feasibility of using virtual sensor estimates to replace identified faulty sensors in order to extend operation to the next convenient maintenance opportunity. Understanding the degradation of sensors and the impact of this degradation on signals is key to developing technical basis to support acceptance criteria and set point decisions, particularly for advanced sensors which do not yet have a cumulative history of operating performance.

  10. Ris-R-1341(EN) Fundamentals for Remote Structural

    E-Print Network [OSTI]

    Risř-R-1341(EN) Fundamentals for Remote Structural Health Monitoring of Wind Turbine Blades ­ a Preproject Annex B ­ Sensors and Non-Destructive Testing Methods for Damage Detection in Wind Turbine Blades Monitoring of Wind Turbine Blades - a Preproject Annex B - Sensors and Non-Destructive Testing Methods

  11. Sensor data analysis and information extraction for structural health monitoring

    E-Print Network [OSTI]

    Yan, Linjun

    2006-01-01T23:59:59.000Z

    Workshop on Structural Health Monitoring, StanfordA Review of Structural Health Monitoring Literature: 1996-workshop on structural Health Monitoring: Structural Health

  12. Tuned Lamb Wave Excitation and Detection with Piezoelectric Wafer Active Sensors for Structural Health Monitoring

    E-Print Network [OSTI]

    Giurgiutiu, Victor

    and detect tuned Lamb waves for structural health monitoring is explored. First, a brief review of Lamb waves mode Lamb waves is demonstrated as an effective structural health monitoring method. Key Words: structural health monitoring, Lamb waves, piezoelectric wafer active sensors, aging aircraft, cracks, damage

  13. Piezoelectric Wafer Embedded Active Sensors for Aging Aircraft Structural Health Monitoring

    E-Print Network [OSTI]

    Giurgiutiu, Victor

    41 Piezoelectric Wafer Embedded Active Sensors for Aging Aircraft Structural Health Monitoring ends with a conceptual design of a structural health monitoring system and suggestions for aging damage detection Á structural health monitoring Á failure prevention Á ultrasonics Á pulse-echo Á emitter

  14. MODE SELECTIVE ACTUATOR-SENSOR SYSTEM FOR LAMB WAVE-BASED STRUCTURAL HEALTH MONITORING

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    MODE SELECTIVE ACTUATOR-SENSOR SYSTEM FOR LAMB WAVE-BASED STRUCTURAL HEALTH MONITORING Daniel Braunschweig, Germany daniel.schmidt@dlr.de ABSTRACT Structural Health Monitoring (SHM) based on Lamb waves is developed. KEYWORDS : Structural health monitoring, Lamb waves, higher order plate theory, actuator

  15. Sensitivity analysis of a directional potential drop sensor for creep monitoring

    E-Print Network [OSTI]

    Nagy, Peter B.

    an accelerated 400-hour creep test are presented to demonstrate the feasibility of this technique to monitorSensitivity analysis of a directional potential drop sensor for creep monitoring Elhoucine Madhi Accepted 1 August 2011 Available online 9 August 2011 Keywords: ACPD Creep monitoring Resistivity

  16. Review of remote-sensor potential for wind-energy studies

    SciTech Connect (OSTI)

    Hooke, W.H.

    1981-03-01T23:59:59.000Z

    This report evaluates a number of remote-sensing systems such as radars, lidars, and acoustic echo sounders which are potential alternatives to the cup- and propeller anemometers routinely used in wind energy siting. The high costs and demanding operational requirements of these sensors currently preclude their use in the early stages of a multi-phase wind energy siting strategy such as that recently articulated by Hiester and Pennell (1981). Instead, these systems can be used most effectively in the lattermost stages of the siting process - what Hiester and Pennell (1981) refer to as the site development phase, necessary only for the siting of large wind-energy conversion systems (WECS) or WECS clusters. Even for this particular application only four techniques appear to be operational now; that is, if used properly, these techniques should provide the data sets currently considered adequate for wind-energy siting purposes. They are, in rough order of increasing expense and operating demands: optical transverse wind sensors; acoustic Doppler sounders; time-of-flight and continuous wave (CW) Doppler lidar; and frequency-modulated, continuous wave (FM-CW) Doppler radar.

  17. Calibration Monitoring for Sensor Calibration Interval Extension: Gaps in the Current Science Base

    SciTech Connect (OSTI)

    Coble, Jamie B.; Ramuhalli, Pradeep; Meyer, Ryan M.; Hashemian, Hash; Shumaker, Brent; Cummins, Dara

    2012-10-09T23:59:59.000Z

    Currently in the United States, periodic sensor recalibration is required for all safety-related sensors, typically occurring at every refueling outage, and it has emerged as a critical path item for shortening outage duration in some plants. International application of calibration monitoring has shown that sensors may operate for longer periods within calibration tolerances. This issue is expected to also be important as the United States looks to the next generation of reactor designs (such as small modular reactors and advanced concepts), given the anticipated longer refueling cycles, proposed advanced sensors, and digital instrumentation and control systems. Online monitoring (OLM) can be employed to identify those sensors that require calibration, allowing for calibration of only those sensors that need it. The U.S. Nuclear Regulatory Commission (NRC) accepted the general concept of OLM for sensor calibration monitoring in 2000, but no U.S. plants have been granted the necessary license amendment to apply it. This paper summarizes a recent state-of-the-art assessment of online calibration monitoring in the nuclear power industry, including sensors, calibration practice, and OLM algorithms. This assessment identifies key research needs and gaps that prohibit integration of the NRC-approved online calibration monitoring system in the U.S. nuclear industry. Several technical needs were identified, including an understanding of the impacts of sensor degradation on measurements for both conventional and emerging sensors; the quantification of uncertainty in online calibration assessment; determination of calibration acceptance criteria and quantification of the effect of acceptance criteria variability on system performance; and assessment of the feasibility of using virtual sensor estimates to replace identified faulty sensors in order to extend operation to the next convenient maintenance opportunity.

  18. Energy Harvesting for Structural Health Monitoring Sensor Networks

    SciTech Connect (OSTI)

    Park, G.; Farrar, C. R.; Todd, M. D.; Hodgkiss, T.; Rosing, T.

    2007-02-26T23:59:59.000Z

    This report has been developed based on information exchanges at a 2.5-day workshop on energy harvesting for embedded structural health monitoring (SHM) sensing systems that was held June 28-30, 2005, at Los Alamos National Laboratory. The workshop was hosted by the LANL/UCSD Engineering Institute (EI). This Institute is an education- and research-focused collaboration between Los Alamos National Laboratory (LANL) and the University of California, San Diego (UCSD), Jacobs School of Engineering. A Statistical Pattern Recognition paradigm for SHM is first presented and the concept of energy harvesting for embedded sensing systems is addressed with respect to the data acquisition portion of this paradigm. Next, various existing and emerging sensing modalities used for SHM and their respective power requirements are summarized, followed by a discussion of SHM sensor network paradigms, power requirements for these networks and power optimization strategies. Various approaches to energy harvesting and energy storage are discussed and limitations associated with the current technology are addressed. This discussion also addresses current energy harvesting applications and system integration issues. The report concludes by defining some future research directions and possible technology demonstrations that are aimed at transitioning the concept of energy harvesting for embedded SHM sensing systems from laboratory research to field-deployed engineering prototypes.

  19. A retrot current sensor for non-intrusive power monitoring at the circuit breaker

    E-Print Network [OSTI]

    Vickery, Daniel Robert

    2011-01-01T23:59:59.000Z

    This thesis presents a new sensor for power monitoring that measures current flow in a circuit breaker without permanent modification of the breaker panel or the circuit breaker itself. At the breaker panel, an inductive ...

  20. In vitro development of a noninvasive polarimetric glucose sensor for diabetic home monitoring 

    E-Print Network [OSTI]

    King, Timothy Wells

    1993-01-01T23:59:59.000Z

    IN VITRO DEVELOPMENT OF A NONINVASIVE POLARIMETRIC GLUCOSE SENSOR FOR DIABETIC HOME MONITORING A Thesis by TIMOTHY WELLS KING Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August 1993 Major Subject: Bioengineering IN VITRO DEVELOPMENT OF A NONINVASIVE POLARIMETRIC GLUCOSE SENSOR FOR DIABETIC HOME MONITORING A Thesis by TIMOTHY WELLS KING Submitted to Texas A&M University in partial...

  1. The application of fiber optic sensors to the monitoring of roller element bearing systems

    E-Print Network [OSTI]

    Juarez, Juan Carlos

    2002-01-01T23:59:59.000Z

    THE APPLICATION OF FIBER OPTIC SENSORS TO THE MONITORING OF ROLLER ELEMENT BEARING SYSTEMS A Thesis by JUAN CARLOS JUAREZ Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August 2002 Major Subject: Electrical Engineering THE APPLICATION OF FIBER OPTIC SENSORS TO THE MONITORING OF ROLLER ELEMENT BEARING SVSTEMS A Thesis by . IIJAN CARLOS JUAREZ Submitted to Texas A&M University...

  2. Active Sensor Wave Propagation Health Monitoring of Beam and Plate Structures

    E-Print Network [OSTI]

    Giurgiutiu, Victor

    1 Active Sensor Wave Propagation Health Monitoring of Beam and Plate Structures Victor Giurgiutiu, Jingjing Bao, Wei Zhao University of South Carolina ABSTRACT Active sensor wave propagation technique is a relatively new method for in-situ nondestructive evaluation (NDE). Elastic waves propagating in material

  3. Liquid Resin Infusion process monitoring with superimposed Fibre Bragg Grating sensor

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Liquid Resin Infusion process monitoring with superimposed Fibre Bragg Grating sensor Emmanuel Resin Infusion (LRI) , with the FBG/LPG sensor embedded in a composite part. Dielectric analysis the material and the structure. Among the various composite manufacturing processes, Liquid Resin Infusion (LRI

  4. Wireless Sensors for Condition Monitoring of Essential Assets

    Broader source: Energy.gov [DOE]

    New Technology Provides Cost Savings and Flexibility for Monitoring Motor-Driven Industrial Equipment

  5. Mobile sensor network to monitor wastewater collection pipelines

    E-Print Network [OSTI]

    Lim, Jungsoo

    2012-01-01T23:59:59.000Z

    95 viii Monitoring illegal19 Detection of illegal dumping . . . . . . . . . .94 9.18 Illustration of illegal

  6. Mid-Infrared Laser based Gas Sensor Technologies for Environmental Monitoring,

    E-Print Network [OSTI]

    , quantification and monitoring of trace gas species and their applications in environmental and industrial process performing sensitive trace gas measurements in gas samples of a few mm3 in volume. QEPAS employs readilyChapter XX Mid-Infrared Laser based Gas Sensor Technologies for Environmental Monitoring, Medical

  7. Autonomous Adaptive Resource Management in Sensor Network Systems for Environmental Monitoring

    E-Print Network [OSTI]

    Panangadan, Anand

    1 Autonomous Adaptive Resource Management in Sensor Network Systems for Environmental Monitoring rates, and routing of data) that impact the utilization of the system resources (such as energy reserves is illustrated on a coastal monitoring and forecast system that is in operation in the New York harbor

  8. Condition monitoring through advanced sensor and computational technology : final report (January 2002 to May 2005).

    SciTech Connect (OSTI)

    Kim, Jung-Taek (Korea Atomic Energy Research Institute, Daejon, Korea); Luk, Vincent K.

    2005-05-01T23:59:59.000Z

    The overall goal of this joint research project was to develop and demonstrate advanced sensors and computational technology for continuous monitoring of the condition of components, structures, and systems in advanced and next-generation nuclear power plants (NPPs). This project included investigating and adapting several advanced sensor technologies from Korean and US national laboratory research communities, some of which were developed and applied in non-nuclear industries. The project team investigated and developed sophisticated signal processing, noise reduction, and pattern recognition techniques and algorithms. The researchers installed sensors and conducted condition monitoring tests on two test loops, a check valve (an active component) and a piping elbow (a passive component), to demonstrate the feasibility of using advanced sensors and computational technology to achieve the project goal. Acoustic emission (AE) devices, optical fiber sensors, accelerometers, and ultrasonic transducers (UTs) were used to detect mechanical vibratory response of check valve and piping elbow in normal and degraded configurations. Chemical sensors were also installed to monitor the water chemistry in the piping elbow test loop. Analysis results of processed sensor data indicate that it is feasible to differentiate between the normal and degraded (with selected degradation mechanisms) configurations of these two components from the acquired sensor signals, but it is questionable that these methods can reliably identify the level and type of degradation. Additional research and development efforts are needed to refine the differentiation techniques and to reduce the level of uncertainties.

  9. Structural and environmental monitoring of tracker and vertex systems using Fiber Optic Sensors

    E-Print Network [OSTI]

    Moya, David

    2012-01-01T23:59:59.000Z

    Fibre optic sensors (FOS) are an established technique for environmental and deformation monitoring in several areas like civil engineering, aerospace, and energy. Their immunity to electromagnetic and magnetic fields and nuclear environments, its small size, multiplexing capability and the possibility to be embedded make them an attractive technology for the structural and environmental monitoring of collider particle physics experiments. Between all the possible Fibre Optic sensors FBGs (Fiber Bragg Grating) seems to be the best solution for HEP applications. The first step was to characterize FBG sensors for it use in High Energy Physics environment. During last two years we have checked the resistance of the Fibre Bragg Grating sensors to radiation. Two irradiation campaigns with protons have been done at CNA (Centro Nacional de Aceleradores). In the near future these sensors are being planned to be used in detectors (the closest one Belle II.). Several work on integration issues in Belle II PXD-SVD, and ...

  10. PASSIVE ACOUSTIC SENSOR NETWORK LOCALIZATION; APPLICATION TO STRUCTURE GEOMETRY MONITORING

    E-Print Network [OSTI]

    Boyer, Edmond

    work in passive identification was conducted in structural health monitoring [6], acoustic [17] and seismology [2]. In structural health monitoring, applications were released to deter- mine structural and discussed. Experimental 7th European Workshop on Structural Health Monitoring July 8-11, 2014. La Cité

  11. Method and device for remotely monitoring an area using a low peak power optical pump

    DOE Patents [OSTI]

    Woodruff, Steven D.; Mcintyre, Dustin L.; Jain, Jinesh C.

    2014-07-22T23:59:59.000Z

    A method and device for remotely monitoring an area using a low peak power optical pump comprising one or more pumping sources, one or more lasers; and an optical response analyzer. Each pumping source creates a pumping energy. The lasers each comprise a high reflectivity mirror, a laser media, an output coupler, and an output lens. Each laser media is made of a material that emits a lasing power when exposed to pumping energy. Each laser media is optically connected to and positioned between a corresponding high reflectivity mirror and output coupler along a pumping axis. Each output coupler is optically connected to a corresponding output lens along the pumping axis. The high reflectivity mirror of each laser is optically connected to an optical pumping source from the one or more optical pumping sources via an optical connection comprising one or more first optical fibers.

  12. Distributed fiber optic intrusion sensor system for monitoring long perimeters 

    E-Print Network [OSTI]

    Juarez, Juan C.

    2009-06-02T23:59:59.000Z

    A distributed sensor using an optical fiber for detecting and locating intruders over long perimeters (>10 km) is described. Phase changes resulting from either the pressure of the intruder on the ground immediately above the buried fiber or from...

  13. Low-Cost Wireless Sensors for Building Monitoring Applications...

    Broader source: Energy.gov (indexed) [DOE]

    ORNL estimates that advanced sensors and controls have the potential to save 20-30% energy consumed by buildings. The target market for this project is all commercial buildings;...

  14. A sensor management architecture concept for monitoring emissions from open-air demil operations.

    SciTech Connect (OSTI)

    Johnson, Michael M.; Robinson, Jerry D.; Stoddard, Mary Clare; Horn, Brent A.; Lipkin, Joel; Foltz, Greg W.

    2005-09-01T23:59:59.000Z

    Sandia National Laboratories, CA proposed a sensor concept to detect emissions from open-burning/open-detonation (OB/OD) events. The system would serve two purposes: (1) Provide data to demilitarization operations about process efficiency, allowing process optimization for cleaner emissions and higher efficiency. (2) Provide data to regulators and neighboring communities about materials dispersing into the environment by OB/OD operations. The proposed sensor system uses instrument control hardware and data visualization software developed at Sandia National Laboratories to link together an array of sensors to monitor emissions from OB/OD events. The suite of sensors would consist of various physical and chemical detectors mounted on stationary or mobile platforms. The individual sensors would be wirelessly linked to one another and controlled through a central command center. Real-time data collection from the sensors, combined with integrated visualization of the data at the command center, would allow for feedback to the sensors to alter operational conditions to adjust for changing needs (i.e., moving plume position, increased spatial resolution, increased sensitivity). This report presents a systems study of the problem of implementing a sensor system for monitoring OB/OD emissions. The goal of this study was to gain a fuller understanding of the political, economic, and technical issues for developing and fielding this technology.

  15. Self-testing security sensor for monitoring closure of vault doors and the like

    DOE Patents [OSTI]

    Cawthorne, D.C.

    1997-05-27T23:59:59.000Z

    A self-testing device is provided for a monitoring system for monitoring whether a closure member such as a door or window is closed. The monitoring system includes a switch unit mounted on the frame of the closure member being monitored and including magnetically biased switches connected in one or more electrical monitoring circuits, and a door magnet unit mounted on the closure member being monitored. The door magnet includes one or more permanent magnets that produce a magnetic field which, when the closure member is closed, cause said switches to assume a first state. When the closure member is opened, the switches switch to a second, alarm state. The self-testing device is electrically controllable from a remote location and produces a canceling or diverting magnetic field which simulates the effect of movement of the closure member from the closed position thereof without any actual movement of the member. 5 figs.

  16. Sensor Networks for Monitoring and Control of Water Distribution Systems

    E-Print Network [OSTI]

    Whittle, Andrew

    Water distribution systems present a significant challenge for structural monitoring. They comprise a complex network of pipelines buried underground that are relatively inaccessible. Maintaining the integrity of these ...

  17. Ris-R-1333(EN) Fundamentals for Remote Structural

    E-Print Network [OSTI]

    Risř-R-1333(EN) Fundamentals for Remote Structural Health Monitoring of Wind Turbine Blades ­ a Preproject Annex E ­ Full-Scale Test of Wind Turbine Blade, Using Sensors and NDT Ole J.D. Kristensen of different types of sensors to detect damage in wind turbine blades. Prior to each of the static test

  18. Evaluation of chemical sensors for in situ ground-water monitoring at the Hanford Site

    SciTech Connect (OSTI)

    Murphy, E.M.; Hostetler, D.D.

    1989-03-01T23:59:59.000Z

    This report documents a preliminary review and evaluation of instrument systems and sensors that may be used to detect ground-water contaminants in situ at the Hanford Site. Three topics are covered in this report: (1) identification of a group of priority contaminants at Hanford that could be monitored in situ, (2) a review of current instrument systems and sensors for environmental monitoring, and (3) an evaluation of instrument systems that could be used to monitor Hanford contaminants. Thirteen priority contaminants were identified in Hanford ground water, including carbon tetrachloride and six related chlorinated hydrocarbons, cyanide, methyl ethyl ketone, chromium (VI), fluoride, nitrate, and uranium. Based on transduction principles, chemical sensors were divided into four classes, ten specific types of instrument systems were considered: fluorescence spectroscopy, surface-enhanced Raman spectroscopy (SERS), spark excitation-fiber optic spectrochemical emission sensor (FOSES), chemical optrodes, stripping voltammetry, catalytic surface-modified ion electrode immunoassay sensors, resistance/capacitance, quartz piezobalance and surface acoustic wave devices. Because the flow of heat is difficult to control, there are currently no environmental chemical sensors based on thermal transduction. The ability of these ten instrument systems to detect the thirteen priority contaminants at the Hanford Site at the required sensitivity was evaluated. In addition, all ten instrument systems were qualitatively evaluated for general selectivity, response time, reliability, and field operability. 45 refs., 23 figs., 7 tabs.

  19. Model Based Optimal Sensor Network Design for Condition Monitoring in an IGCC Plant

    SciTech Connect (OSTI)

    Kumar, Rajeeva; Kumar, Aditya; Dai, Dan; Seenumani, Gayathri; Down, John; Lopez, Rodrigo

    2012-12-31T23:59:59.000Z

    This report summarizes the achievements and final results of this program. The objective of this program is to develop a general model-based sensor network design methodology and tools to address key issues in the design of an optimal sensor network configuration: the type, location and number of sensors used in a network, for online condition monitoring. In particular, the focus in this work is to develop software tools for optimal sensor placement (OSP) and use these tools to design optimal sensor network configuration for online condition monitoring of gasifier refractory wear and radiant syngas cooler (RSC) fouling. The methodology developed will be applicable to sensing system design for online condition monitoring for broad range of applications. The overall approach consists of (i) defining condition monitoring requirement in terms of OSP and mapping these requirements in mathematical terms for OSP algorithm, (ii) analyzing trade-off of alternate OSP algorithms, down selecting the most relevant ones and developing them for IGCC applications (iii) enhancing the gasifier and RSC models as required by OSP algorithms, (iv) applying the developed OSP algorithm to design the optimal sensor network required for the condition monitoring of an IGCC gasifier refractory and RSC fouling. Two key requirements for OSP for condition monitoring are desired precision for the monitoring variables (e.g. refractory wear) and reliability of the proposed sensor network in the presence of expected sensor failures. The OSP problem is naturally posed within a Kalman filtering approach as an integer programming problem where the key requirements of precision and reliability are imposed as constraints. The optimization is performed over the overall network cost. Based on extensive literature survey two formulations were identified as being relevant to OSP for condition monitoring; one based on LMI formulation and the other being standard INLP formulation. Various algorithms to solve these two formulations were developed and validated. For a given OSP problem the computation efficiency largely depends on the “size” of the problem. Initially a simplified 1-D gasifier model assuming axial and azimuthal symmetry was used to test out various OSP algorithms. Finally these algorithms were used to design the optimal sensor network for condition monitoring of IGCC gasifier refractory wear and RSC fouling. The sensors type and locations obtained as solution to the OSP problem were validated using model based sensing approach. The OSP algorithm has been developed in a modular form and has been packaged as a software tool for OSP design where a designer can explore various OSP design algorithm is a user friendly way. The OSP software tool is implemented in Matlab/Simulink© in-house. The tool also uses few optimization routines that are freely available on World Wide Web. In addition a modular Extended Kalman Filter (EKF) block has also been developed in Matlab/Simulink© which can be utilized for model based sensing of important process variables that are not directly measured through combining the online sensors with model based estimation once the hardware sensor and their locations has been finalized. The OSP algorithm details and the results of applying these algorithms to obtain optimal sensor location for condition monitoring of gasifier refractory wear and RSC fouling profile are summarized in this final report.

  20. Online, In-Situ Monitoring Combustion Turbines Using Wireless Passive Ceramic Sensors

    SciTech Connect (OSTI)

    Gong, Xun; An, Linan; Xu, Chengying

    2013-06-30T23:59:59.000Z

    The overall objective of this project is to develop high-temperature wireless passive ceramic sensors for online, real-time monitoring combustion turbines. During this project period, we have successfully demonstrated temperature sensors up to 1300{degrees}C and pressure sensors up to 800oC. The temperature sensor is based on a high-Q-factor dielectric resonator and the pressure sensor utilizes the evanescent-mode cavity to realize a pressure-sensitive high-Q-factor resonator. Both sensors are efficiently integrated with a compact antenna. These sensors are wirelessly interrogated. The resonant frequency change corresponding to either temperature or pressure can be identified using a time-domain gating technique. The sensors realized in this project can survive harsh environments characterized by high temperatures (>1000{degrees}C) and corrosive gases, owing to the excellent material properties of polymer-derived ceramics (PDCs) developed at University of Central Florida. It is anticipated that this work will significantly advance the capability of high-temperature sensor technologies and be of a great benefit to turbine industry and their customers.

  1. Distributed fiber optic intrusion sensor system for monitoring long perimeters

    E-Print Network [OSTI]

    Juarez, Juan C.

    2009-06-02T23:59:59.000Z

    Perturbation ........................ 17 G. Frequency Drift Measurement................................................................... 19 III ERBIUM DOPED FIBER LASER CHARACTERIZATION........................ 22 A. Er:Fiber Laser... .................................................................................................... 22 12. Experimental setup for fiber laser used in the intrusion sensor system ............. 24 13. Spectral linewidth scan of Erbium doped fiber laser ......................................... 24 14. Delayed self-heterodyne test setup...

  2. Comparing Trust Mechanisms for Monitoring Aggregator Nodes in Sensor Networks

    E-Print Network [OSTI]

    Sen, Sandip

    The University of Tulsa Tulsa, OK oly-mistry@utulsa.edu Anil Gürsel The University of Tulsa Tulsa, OK anil-gursel@utulsa.edu Sandip Sen The University of Tulsa Tulsa, OK sandip@utulsa.edu ABSTRACT Sensor nodes are often used

  3. Characterization, Monitoring, and Sensor Technology Integrated Program (CMST-IP). Technology summary

    SciTech Connect (OSTI)

    Not Available

    1994-04-01T23:59:59.000Z

    The Characterization, Monitoring, and Sensor Technology Integrated Program seeks to deliver needed technologies, timely and cost-effectively, to the Office of Waste Management (EM-30), the Office of Environmental Restoration (EM-40), and the Office of Facility Transition and Management (EM-60). The scope of characterizations monitoring, and sensor technology needs that are required by those organizations encompass: (1) initial location and characterization of wastes and waste environments - prior to treatment; (2) monitoring of waste retrieval, remediation and treatment processes; (3) characterization of the co-position of final waste treatment forms to evaluate the performance of waste treatments processes; and (4) site closure and compliance monitoring. Wherever possible, the CMST-IP fosters technology transfer and commercialization of technologies that it sponsors.

  4. Uncertainty Quantification Techniques for Sensor Calibration Monitoring in Nuclear Power Plants

    SciTech Connect (OSTI)

    Ramuhalli, Pradeep; Lin, Guang; Crawford, Susan L.; Konomi, Bledar A.; Coble, Jamie B.; Shumaker, Brent; Hashemian, Hash

    2014-04-30T23:59:59.000Z

    This report describes research towards the development of advanced algorithms for online calibration monitoring. The objective of this research is to develop the next generation of online monitoring technologies for sensor calibration interval extension and signal validation in operating and new reactors. These advances are expected to improve the safety and reliability of current and planned nuclear power systems as a result of higher accuracies and increased reliability of sensors used to monitor key parameters. The focus of this report is on documenting the outcomes of the first phase of R&D under this project, which addressed approaches to uncertainty quantification (UQ) in online monitoring that are data-driven, and can therefore adjust estimates of uncertainty as measurement conditions change. Such data-driven approaches to UQ are necessary to address changing plant conditions, for example, as nuclear power plants experience transients, or as next-generation small modular reactors (SMR) operate in load-following conditions.

  5. Uncertainty Quantification Techniques for Sensor Calibration Monitoring in Nuclear Power Plants

    SciTech Connect (OSTI)

    Ramuhalli, Pradeep [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Lin, Guang [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Crawford, Susan L. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Konomi, Bledar A. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Braatz, Brett G. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Coble, Jamie B. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Shumaker, Brent [Analysis and Measurement Services Corp., Knoxville, TN (United States); Hashemian, Hash [Analysis and Measurement Services Corp., Knoxville, TN (United States)

    2013-09-01T23:59:59.000Z

    This report describes the status of ongoing research towards the development of advanced algorithms for online calibration monitoring. The objective of this research is to develop the next generation of online monitoring technologies for sensor calibration interval extension and signal validation in operating and new reactors. These advances are expected to improve the safety and reliability of current and planned nuclear power systems as a result of higher accuracies and increased reliability of sensors used to monitor key parameters. The focus of this report is on documenting the outcomes of the first phase of R&D under this project, which addressed approaches to uncertainty quantification (UQ) in online monitoring that are data-driven, and can therefore adjust estimates of uncertainty as measurement conditions change. Such data-driven approaches to UQ are necessary to address changing plant conditions, for example, as nuclear power plants experience transients, or as next-generation small modular reactors (SMR) operate in load-following conditions.

  6. Structural Monitoring of Wind Turbines using Wireless Sensor Networks

    E-Print Network [OSTI]

    Sweetman, Bert

    on traditional fossil fuel technologies. Conditional monitoring of wind turbines can help to avert unplanned). Technological improvements (e.g. larger, more powerful generation turbines) and federal tax subsidies have

  7. Privacy Sensitive Monitoring With a Mix of IR Sensors and Cameras Abhishek Rajgarhia, Fred Stann, {rajgarhi, fstann@usc.edu},

    E-Print Network [OSTI]

    Heidemann, John

    · reliable image transfer over low-speed sensor network in a security/monitoring application for a building are equipped with cameras and PIR sensors. For privacy reasons, cameras are not deployed in private areas, however, they are considered acceptable for the entrance. Private areas have only PIR sensors, able

  8. Abstract--We identify the security threats facing a sensor network for wireless medical monitoring, and we propose a

    E-Print Network [OSTI]

    Wang, Lan

    1 Abstract--We identify the security threats facing a sensor network for wireless medical of medical sensors that convey information on his or her vital signs to a bedside monitoring device. However mobility, especially for long-term care. Recent advances in sensor technology have enabled the development

  9. Processing of transient signals from damage in CFRP composite materials monitored with embedded intensity-modulated fiber optic sensors

    E-Print Network [OSTI]

    intensity-modulated fiber optic sensors M. Weversa , L. Ripperta , J.-M. Papyb , S. Van Huffelb a Department-modulated fiber optic sensors, whose working principle is based on the microbending concept, are used to monitor. In this approach fibre optic sensors may offer an alternative for the robust piezoelectric transducers used

  10. Ultra-wideband radar sensors and networks

    DOE Patents [OSTI]

    Leach, Jr., Richard R; Nekoogar, Faranak; Haugen, Peter C

    2013-08-06T23:59:59.000Z

    Ultra wideband radar motion sensors strategically placed in an area of interest communicate with a wireless ad hoc network to provide remote area surveillance. Swept range impulse radar and a heart and respiration monitor combined with the motion sensor further improves discrimination.

  11. Structural and environmental monitoring of tracker and vertex systems using Fiber Optic Sensors

    E-Print Network [OSTI]

    David Moya; Iván Vila

    2012-03-01T23:59:59.000Z

    Fibre optic sensors (FOS) are an established technique for environmental and deformation monitoring in several areas like civil engineering, aerospace, and energy. Their immunity to electromagnetic and magnetic fields and nuclear environments, its small size, multiplexing capability and the possibility to be embedded make them an attractive technology for the structural and environmental monitoring of collider particle physics experiments. Between all the possible Fibre Optic sensors FBGs (Fiber Bragg Grating) seems to be the best solution for HEP applications. The first step was to characterize FBG sensors for it use in High Energy Physics environment. During last two years we have checked the resistance of the Fibre Bragg Grating sensors to radiation. Two irradiation campaigns with protons have been done at CNA (Centro Nacional de Aceleradores). In the near future these sensors are being planned to be used in detectors (the closest one Belle II.). Several work on integration issues in Belle II PXD-SVD, and checking for environmental and deformation monitoring in the detectors inner part has been done.

  12. Development of a Wireless Sensor Network for Monitoring a Bioreactor Landfill Asis Nasipuri,1

    E-Print Network [OSTI]

    Nasipuri, Asis

    1 Development of a Wireless Sensor Network for Monitoring a Bioreactor Landfill Asis Nasipuri,1 (704) 687 6953; email: vogunro@uncc.edu Abstract Recent studies of aerobic bioreactors have of the temperature and moisture in the bioreactor. This work presents the development and implementation

  13. 192 IEEE SENSORS JOURNAL, VOL. 7, NO. 2, FEBRUARY 2007 Hydrocarbon and Fluorocarbon Monitoring by MIS

    E-Print Network [OSTI]

    Moritz, Werner

    192 IEEE SENSORS JOURNAL, VOL. 7, NO. 2, FEBRUARY 2007 Hydrocarbon and Fluorocarbon Monitoring of hydrocarbon and fluorocarbon molecules on a Ni coil (CE), the products detectable by metal­ insulator Terms--Fluorocarbons, hydrocarbons, metal­ insulator­semiconductor (MIS) and metal

  14. The monitoring and multiplexing of fiber optic sensors using chirped laser sources 

    E-Print Network [OSTI]

    Wan, Xiaoke

    2004-09-30T23:59:59.000Z

    . Linearization of the chirp rate has been achieved using feedback from a fiber Fabry-Perot interferometer (FFPI) to adjust the voltage ramp which drives the rotating mirror. In a demonstration of monitoring an array of two fiber Bragg grating (FBG) sensors, a...

  15. A Noninvasive Thin Film Sensor for Monitoring Oxygen Tension during in Vitro Cell Culture

    E-Print Network [OSTI]

    Raghavan, Srinivasa

    demonstrated how low oxygen levels lead to vasoocclusion in sickle cell anemia.7 Cancer cells that existA Noninvasive Thin Film Sensor for Monitoring Oxygen Tension during in Vitro Cell Culture Peter C of Maryland, College Park, Maryland 20742, and SAIC, Arlington, VA 22203 Oxygen tension in mammalian cell

  16. Anomaly detection in monitoring sensor data for preventive maintenance Julien Rabatel a,b,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Anomaly detection in monitoring sensor data for preventive maintenance Julien Rabatel a,b, , Sandra Preventive maintenance a b s t r a c t Today, many industrial companies must face problems raised to make predictive maintenance to prevent a serious breakdown. In addition, the corrective maintenance

  17. DEAMON: Energy-efficient sensor monitoring Minho Shin, Patrick Tsang, David Kotz, Cory Cornelius

    E-Print Network [OSTI]

    Kotz, David

    DEAMON: Energy-efficient sensor monitoring Minho Shin, Patrick Tsang, David Kotz, Cory Cornelius a node's battery. We propose DEAMON (Distributed Energy-Aware MONi- toring), an energy-efficient. We propose DEAMON (Distributed Energy-Aware MONi- toring), an energy-efficient distributed algorithm

  18. Demo Abstract: Wireless Sensor Network for Substation Monitoring: Design and Deployment

    E-Print Network [OSTI]

    Nasipuri, Asis

    -voltage substations, lower installation cost, and utilization of the distributed pro- cessing capabilities of wirelessDemo Abstract: Wireless Sensor Network for Substation Monitoring: Design and Deployment Asis-Transmissions & Substations 9625 Research Drive Charlotte, NC 28262 {lvanderz,birodriguez} @epri.com Ralph McKosky, Joseph

  19. Grid Monitoring: Bounds on Performances of Sensor Placement Algorithms Muhammad Uddin

    E-Print Network [OSTI]

    Kavcic, Aleksandar

    Grid Monitoring: Bounds on Performances of Sensor Placement Algorithms Muhammad Uddin Anthony Kuh measurement units (PMUs) in the power grid. Given noisy measurements and knowledge of the state correlation to capture the dynamics of the power grid [1]. With the advent of phasor technology, time synchronized

  20. An evaluation of direct pressure sensors for monitoring the aluminum die casting process

    SciTech Connect (OSTI)

    Zhang, X.

    1997-12-31T23:59:59.000Z

    This study was conducted as part of the US Department of Energy (DOE) sponsored project Die Cavity Instrumentation. One objective of that project was to evaluate thermal, pressure, and gas flow process monitoring sensors in or near the die cavity as a means of securing improved process monitoring and control and better resultant part quality. The objectives of this thesis are to (1) evaluate a direct cavity pressure sensor in a controlled production campaign at the GM Casting Advanced Development Center (CADC) at Bedford, Indiana; and (2) develop correlations between sensor responses and product quality in terms of the casting weight, volume, and density. A direct quartz-based pressure sensor developed and marked by Kistler Instrument Corp. was acquired for evaluating as an in-cavity liquid metal pressure sensor. This pressure sensor is designed for use up to 700 C and 2,000 bars (29,000 psi). It has a pressure overload capacity up to 2,500 bars (36,250 psi).

  1. Multipurpose Acoustic Sensor for Downhole Fluid Monitoring | Department of

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015of 2005 attheMohammed Khan - Technology ProjectEnergy Novel sensor design

  2. Electrochemical NOx Sensors for Monitoring Diesel Emissions | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny:RevisedAdvisory BoardNucleateElectrochemical Hydrogen CompressionEnergy Sensors

  3. A Novel, Low-Cost, Reduced-Sensor Approach for Providing Smart Renote Monitoring and Diagnostics for Packaged Air Conditioners and Heat Pumps

    SciTech Connect (OSTI)

    Brambley, Michael R.

    2009-09-01T23:59:59.000Z

    This report describes conceptually an approach to providing automated remote performance and conditioning monitoring and fault detection for air conditioners and heat pumps that shows great promise to reduce the capital and installation costs of such systems from over $1000 per unit to $200 to $400 per unit. The approach relies on non-intrusive electric load monitoring (NIELM) to enable separation of the power use signals of compressors and fans in the air conditioner or heat pump. Then combining information on the power uses and one or two air temperature measurements, changes in energy efficiency and occurrence of major faults would be detected. By decreasing the number of sensors used from between ten and twenty in current diagnostic monitoring systems to three for the envisaged system, the capital cost of the monitoring system hardware and the cost of labor for installation would be decreased significantly. After describing the problem being addressed and the concept for performance monitoring and fault detection in more detail, the report identifies specific conditions and faults that the proposed method would detect, discusses specific needs for successful use of the NIELM approach, and identifies the major elements in the path from concept to a commercialized monitoring and diagnostic system.

  4. Improving Rangeland Monitoring and Assessment: Integrating Remote Sensing, GIS, and Unmanned Aerial Vehicle Systems

    SciTech Connect (OSTI)

    Robert Paul Breckenridge

    2007-05-01T23:59:59.000Z

    Creeping environmental changes are impacting some of the largest remaining intact parcels of sagebrush steppe ecosystems in the western United States, creating major problems for land managers. The Idaho National Laboratory (INL), located in southeastern Idaho, is part of the sagebrush steppe ecosystem, one of the largest ecosystems on the continent. Scientists at the INL and the University of Idaho have integrated existing field and remotely sensed data with geographic information systems technology to analyze how recent fires on the INL have influenced the current distribution of terrestrial vegetation. Three vegetation mapping and classification systems were used to evaluate the changes in vegetation caused by fires between 1994 and 2003. Approximately 24% of the sagebrush steppe community on the INL was altered by fire, mostly over a 5-year period. There were notable differences between methods, especially for juniper woodland and grasslands. The Anderson system (Anderson et al. 1996) was superior for representing the landscape because it includes playa/bare ground/disturbed area and sagebrush steppe on lava as vegetation categories. This study found that assessing existing data sets is useful for quantifying fire impacts and should be helpful in future fire and land use planning. The evaluation identified that data from remote sensing technologies is not currently of sufficient quality to assess the percentage of cover. To fill this need, an approach was designed using both helicopter and fixed wing unmanned aerial vehicles (UAVs) and image processing software to evaluate six cover types on field plots located on the INL. The helicopter UAV provided the best system compared against field sampling, but is more dangerous and has spatial coverage limitations. It was reasonably accurate for dead shrubs and was very good in assessing percentage of bare ground, litter and grasses; accuracy for litter and shrubs is questionable. The fixed wing system proved to be feasible and can collect imagery for very large areas in a short period of time. It was accurate for bare ground and grasses. Both UAV systems have limitations, but these will be reduced as the technology advances. In both cases, the UAV systems collected data at a much faster rate than possible on the ground. The study concluded that improvements in automating the image processing efforts would greatly improve use of the technology. In the near future, UAV technology may revolutionize rangeland monitoring in the same way Global Positioning Systems have affected navigation while conducting field activities.

  5. Dual sensitivity mode system for monitoring processes and sensors

    DOE Patents [OSTI]

    Wilks, Alan D. (Mount Prospect, IL); Wegerich, Stephan W. (Glendale Heights, IL); Gross, Kenneth C. (Bolingbrook, IL)

    2000-01-01T23:59:59.000Z

    A method and system for analyzing a source of data. The system and method involves initially training a system using a selected data signal, calculating at least two levels of sensitivity using a pattern recognition methodology, activating a first mode of alarm sensitivity to monitor the data source, activating a second mode of alarm sensitivity to monitor the data source and generating a first alarm signal upon the first mode of sensitivity detecting an alarm condition and a second alarm signal upon the second mode of sensitivity detecting an associated alarm condition. The first alarm condition and second alarm condition can be acted upon by an operator and/or analyzed by a specialist or computer program.

  6. Radio frequency security system, method for a building facility or the like, and apparatus and methods for remotely monitoring the status of fire extinguishers

    DOE Patents [OSTI]

    Runyon, Larry (Richland, WA); Gunter, Wayne M. (Richland, WA); Gilbert, Ronald W. (Gilroy, CA)

    2006-07-25T23:59:59.000Z

    A system for remotely monitoring the status of one or more fire extinguishers includes means for sensing at least one parameter of each of the fire extinguishers; means for selectively transmitting the sensed parameters along with information identifying the fire extinguishers from which the parameters were sensed; and means for receiving the sensed parameters and identifying information for the fire extinguisher or extinguishers at a common location. Other systems and methods for remotely monitoring the status of multiple fire extinguishers are also provided.

  7. Application of a wireless sensor node to health monitoring of operational wind turbine blades

    SciTech Connect (OSTI)

    Taylor, Stuart G [Los Alamos National Laboratory; Farinholt, Kevin M [Los Alamos National Laboratory; Park, Gyuhae [Los Alamos National Laboratory; Farrar, Charles R [Los Alamos National Laboratory; Todd, Michael D [UCSD

    2009-01-01T23:59:59.000Z

    Structural health monitoring (SHM) is a developing field of research with a variety of applications including civil structures, industrial equipment, and energy infrastructure. An SHM system requires an integrated process of sensing, data interrogation and statistical assessment. The first and most important stage of any SHM system is the sensing system, which is traditionally composed of transducers and data acquisition hardware. However, such hardware is often heavy, bulky, and difficult to install in situ. Furthermore, physical access to the structure being monitored may be limited or restricted, as is the case for rotating wind turbine blades or unmanned aerial vehicles, requiring wireless transmission of sensor readings. This study applies a previously developed compact wireless sensor node to structural health monitoring of rotating small-scale wind turbine blades. The compact sensor node collects low-frequency structural vibration measurements to estimate natural frequencies and operational deflection shapes. The sensor node also has the capability to perform high-frequency impedance measurements to detect changes in local material properties or other physical characteristics. Operational measurements were collected using the wireless sensing system for both healthy and damaged blade conditions. Damage sensitive features were extracted from the collected data, and those features were used to classify the structural condition as healthy or damaged.

  8. 60GHz Wireless Nano-Sensors Network for Structure Health Monitoring as Enabler for Safer, Greener Aircrafts

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    60GHz Wireless Nano-Sensors Network for Structure Health Monitoring as Enabler for Safer, Greener-objects for Structure Health Monitoring in the aircrafts and the improvements bring by the nanotechnologies. The main the cabin of an aircraft and the choice of the network architecture. Keywords: Structure Health Monitoring

  9. Evaluation of emplacement sensors for detecting radiation and volatile organic compounds and for long-term monitoring access tubes for the BWCS

    SciTech Connect (OSTI)

    Lord, D.L.; Averill, R.H.

    1997-10-01T23:59:59.000Z

    This document evaluates sensors for detecting contaminants in the excavated waste generated by the Buried Waste Containment System (BWCS). The Barrier Placement Machine (BPM) removes spoils from under a landfill or plume and places it on a conveyor belt on the left and right sides of the BPM. The spoils will travel down the conveyor belts past assay monitors and be deposited on top of the site being worked. The belts are 5 ft wide and transport approximately 15 ft3 /minute of spoils. This corresponds to a 10 ft per hour BPM advance rate. With a 2 in. spoils height the belt speed would be 3.6 in. per second. The spoils being removed are expected to be {open_quotes}clean{close_quotes} (no radiation or volatile organics above background levels). To ensure that the equipment is not digging through a contaminated area, assay equipment will monitor the spoils for mg radiation and volatile organic compounds (VOCs). The radiation monitors will check for gross radiation indication. Upon detection of radiation levels above a predetermined setpoint, further evaluation will be performed to determine the isotopes present and their quantity. This will require hand held monitors and a remote monitoring station. Simultaneously, VOC monitors will monitor for predetermined volatile/semi-volatile organic compounds. A Fourier-Transform Infrared Spectrometer (FTIR) monitor is recommended for this operation. Specific site requirements and regulations will determine setpoints and operation scenarios. If VOCs are detected, the data will be collected and recorded. A flat panel display will be mounted in the BPM operator`s cab showing the radio nuclide and VOC monitoring data. As the BPM advances, a 3-in. diameter PVC tube will be placed on the bottom of the barrier slot in front of the 12 to 16-in. containment barrier being emplaced.

  10. Tunable Diode Laser Sensor for Monitoring and Control of Harsh Combustion Environments

    SciTech Connect (OSTI)

    VonDrasek, William; Melsio-Pubill, Anna

    2006-05-30T23:59:59.000Z

    This work represents the collaborative effort between American Air Liquide and Physical Sciences, Inc. for developing a sensor based on near-IR tunable diode lasers (TDL). The multi-species capability of the sensor for simultaneous monitoring of CO, O2, and H2O concentration as well as gas temperature is ideal for in-situ monitoring on industrial furnaces. The chemical species targeted are fundamental for controlling the combustion space for improved energy efficiency, reduced pollutants, and improved product quality, when coupling the measurement to a combustion control system. Several add-on modules developed provide flexibility in the system configuration for handling different process monitoring applications. For example, the on-Demand Power Control system for the 1.5 ?m laser is used for high particle density exhaust streams where laser transmission is problematic. For long-distance signal collection a fiber optic communication system is used to reduce noise pick-up. Finally, hardened modules to withstand high ambient temperatures, immune to EMF interference, protection from flying debris, and interfaced with pathlength control laser beam shielding probes were developed specifically for EAF process monitoring. Demonstration of these different system configurations was conducted on Charter Steel's reheat furnace, Imco Recycling, Inc. (now Aleris International, Inc.) aluminum reverberatory furnace, and Gerdau Ameristeel's EAF. Measurements on the reheat furnace demonstrated zone monitoring with the measurement performed close to the steel billet. Results from the aluminum furnace showed the benefit of measuring in-situ near the bath. In this case, low-level furnace optimization was performed and demonstrated 5% fuel savings. Monitoring tests on the EAF off-gas demonstrated the level of industrialization of the sensor to survive the harsh EAF environment. Long-term testing on the EAF has been on-going for over 6 months with essentially zero maintenance. Validation of the TDL measurement on the EAF was confirmed by comparison with extractive sampling CO measurements.

  11. Development of laboratory and process sensors to monitor particle size distribution of industrial slurries

    SciTech Connect (OSTI)

    Pendse, H.P.

    1992-10-01T23:59:59.000Z

    In this paper we present a novel measurement technique for monitoring particle size distributions of industrial colloidal slurries based on ultrasonic spectroscopy and mathematical deconvolution. An on-line sensor prototype has been developed and tested extensively in laboratory and production settings using mineral pigment slurries. Evaluation to date shows that the sensor is capable of providing particle size distributions, without any assumptions regarding their functional form, over diameters ranging from 0.1 to 100 micrometers in slurries with particle concentrations of 10 to 50 volume percents. The newly developed on-line sensor allows one to obtain particle size distributions of commonly encountered inorganic pigment slurries under industrial processing conditions without dilution.

  12. INTELLIGENT MONITORING SYSTEM WITH HIGH TEMPERATURE DISTRIBUTED FIBEROPTIC SENSOR FOR POWER PLANT COMBUSTION PROCESSES

    SciTech Connect (OSTI)

    Kwang Y. Lee; Stuart S. Yin; Andre Boheman

    2004-12-26T23:59:59.000Z

    The objective of the proposed work is to develop an intelligent distributed fiber optical sensor system for real-time monitoring of high temperature in a boiler furnace in power plants. Of particular interest is the estimation of spatial and temporal distributions of high temperatures within a boiler furnace, which will be essential in assessing and controlling the mechanisms that form and remove pollutants at the source, such as NOx. The basic approach in developing the proposed sensor system is three fold: (1) development of high temperature distributed fiber optical sensor capable of measuring temperatures greater than 2000 C degree with spatial resolution of less than 1 cm; (2) development of distributed parameter system (DPS) models to map the three-dimensional (3D) temperature distribution for the furnace; and (3) development of an intelligent monitoring system for real-time monitoring of the 3D boiler temperature distribution. Under Task 1, improvement was made on the performance of in-fiber grating fabricated in single crystal sapphire fibers, test was performed on the grating performance of single crystal sapphire fiber with new fabrication methods, and the fabricated grating was applied to high temperature sensor. Under Task 2, models obtained from 3-D modeling of the Demonstration Boiler were used to study relationships between temperature and NOx, as the multi-dimensionality of such systems are most comparable with real-life boiler systems. Studies show that in boiler systems with no swirl, the distributed temperature sensor may provide information sufficient to predict trends of NOx at the boiler exit. Under Task 3, we investigate a mathematical approach to extrapolation of the temperature distribution within a power plant boiler facility, using a combination of a modified neural network architecture and semigroup theory. The 3D temperature data is furnished by the Penn State Energy Institute using FLUENT. Given a set of empirical data with no analytic expression, we first develop an analytic description and then extend that model along a single axis.

  13. Non-conventional passive sensors for monitoring tritium on surfaces

    SciTech Connect (OSTI)

    Gammage, R.B.; Brock, J.L.; Meyer, K.E. [Oak Ridge National Lab., TN (United States). Health Sciences Research Div.

    1995-06-01T23:59:59.000Z

    The authors describe development of small passive, solid-state detectors for in-situ measurements of tritium, or other weak beta-emitting radionuclides, on surfaces. One form of detector operates on the principle of thermally stimulated exoelectron emission (TSEE), the other by discharge of an electret ion chamber (EIC). There are currently two specific types of commercially available detector systems that lend themselves to making surface measurements. One is the thin-film BeO on a graphite disc, and the other is the Teflon EIC. Two other types of TSEE dosimeters (ceramic BeO and carbon doped alumina) are described but lack either a suitable commercially available reader or standardized methods of fabrication. The small size of these detectors allows deployment in locations difficult to access with conventional windowless gas-flow proportional counters. Preliminary testing shows that quantitative measurements are realized with exposure times of 1--10 hours for the TSEE dosimeters (at the DOE release guideline of 5,000 dpm/100 cm{sup 2} for fixed beta contamination). The EIC detectors exhibit an MDA of 26,000 dpm/100 cm{sup 2} for a 24 hour exposure. Both types of integrating device are inexpensive and reusable. Measurements can, therefore, be made that are faster, cheaper, safer, and better than those possible with baseline monitoring technology.

  14. Potentiometric Sensor for Real-Time Monitoring of Multivalent Ion Concentrations in Molten Salt

    SciTech Connect (OSTI)

    Peter A. Zink; Jan-Fong Jue; Brenda E. Serrano; Guy L. Fredrickson; Ben F. Cowan; Steven D. Herrmann; Shelly X. Li

    2010-07-01T23:59:59.000Z

    Electrorefining of spent metallic nuclear fuel in high temperature molten salt systems is a core technology in pyroprocessing, which in turn plays a critical role in the development of advanced fuel cycle technologies. In electrorefining, spent nuclear fuel is treated electrochemically in order to effect separations between uranium, noble metals, and active metals, which include the transuranics. The accumulation of active metals in a lithium chloride-potassium chloride (LiCl-KCl) eutectic molten salt electrolyte occurs at the expense of the UCl3-oxidant concentration in the electrolyte, which must be periodically replenished. Our interests lie with the accumulation of active metals in the molten salt electrolyte. The real-time monitoring of actinide concentrations in the molten salt electrolyte is highly desirable for controlling electrochemical operations and assuring materials control and accountancy. However, real-time monitoring is not possible with current methods for sampling and chemical analysis. A new solid-state electrochemical sensor is being developed for real-time monitoring of actinide ion concentrations in a molten salt electrorefiner. The ultimate function of the sensor is to monitor plutonium concentrations during electrorefining operations, but in this work gadolinium was employed as a surrogate material for plutonium. In a parametric study, polycrystalline sodium beta double-prime alumina (Na-ß?-alumina) discs and tubes were subject to vapor-phase exchange with gadolinium ions (Gd3+) using a gadolinium chloride salt (GdCl3) as a precursor to produce gadolinium beta double-prime alumina (Gd-ß?-alumina) samples. Electrochemical impedance spectroscopy and microstructural analysis were performed on the ion-exchanged discs to determine the relationship between ion exchange and Gd3+ ion conductivity. The ion-exchanged tubes were configured as potentiometric sensors in order to monitor real-time Gd3+ ion concentrations in mixtures of gadolinium chloride (GdCl3) in LiCl-KCl eutectic molten salts through measurement of the potential difference between a reference and working electrode.

  15. GTRI Remote Monitoring System: Training and Operational Needs Assessment Analysis Report

    SciTech Connect (OSTI)

    Day, Debra E.; Fox, Sorcha

    2012-04-20T23:59:59.000Z

    The mission of the United States Department of Energy (DOE) National Nuclear Security Administrations (NNSA's) Global Threat Reduction Initiative (GTRI) is to identify, secure, recover and facilitate the disposition of vulnerable nuclear and high-risk radioactive materials around the world that pose a threat to the United States and the international community. The GTRI's unique mission to reduce and protect vulnerable nuclear and radiological materials located at civilian sites worldwide directly addresses recommendations of the 9/11 Commission1, and is a vital part of the President's National Security Strategy and the Global Initiative. The GTRI Remote Monitoring System (RMS) is a standalone security system that includes radiation and tamper alarms, and CCTV; which can be transmitted securely over the Internet to multiple on-site and off-site locations. Through our experiences during installation of the system at 162 sites, plus feedback received from Alarm Response Training course participants, site input to project teams and analysis of trouble calls; indications were that current system training was lacking and inconsistent. A survey was undertaken to gather information from RMS users across the nation, to evaluate the current level of training and determine what if any improvements needed to be made. Additional questions were focused on the operation of the RMS software. The training survey was initially sent electronically to 245 users at the RMS sites and achieved a 37.6% return rate. Analysis of the resulting data revealed that 34.6% of the respondents had not received training or were unsure if they had, despite the fact that vendor engineers provide training at installation of the system. Any training received was referred to as minimal, and brief, not documented, and nothing in writing. 63.7% of respondents said they were either not at all prepared or only somewhat prepared to use the RMS software required to effectively operate the system. As a result of this analysis, a formal training curriculum will be designed and implemented to include several blended learning delivery options. This training will be piloted at RMS sites; initial training will become a required element of RMS installation and refresher training will be considered for sustainability of operations.

  16. muDog: Smart Monitoring Mechanism for Wireless Sensor Networks based on IEEE 802.15.4 MAC

    E-Print Network [OSTI]

    Boyer, Edmond

    @univ-mlv.fr Abstract--The resources in Wireless Sensor Networks (WSNs) are limited like energy and bandwidth which monitoring, objects localization, etc.). One of the main constraints of these networks is energy limitation protocol design and sensor network deployment. The energy limitation creates vulnerabilities

  17. Energy Ecient Monitoring in Sensor Networks Amol Deshpande y Samir Khuller zx Azarakhsh Malekian z Mohammed Toossi

    E-Print Network [OSTI]

    Khuller, Samir

    Energy EĆcient Monitoring in Sensor Networks #3; Amol Deshpande y Samir Khuller zx Azarakhsh Malekian z Mohammed Toossi Abstract In this paper we study a set of problems related to eĆ- cient energy Introduction EĆcient energy management in sensor networks is a primary challenge as we expect wireless de

  18. ELEVATED TEMPERATURE SENSORS FOR ON-LINE CRITICAL EQUIPMENT HEALTH MONITORING

    SciTech Connect (OSTI)

    James Sebastian

    2005-03-01T23:59:59.000Z

    The objective of this research program is to improve high temperature piezoelectric aluminum nitride (AlN) sensor technology to make it useful for instrumentation and health monitoring of current and future electrical power generation equipment. The program will extend the temperature range of the sensor from approximately 700 C to above 1000 C, and ultrasonic coupling to objects at these temperatures will be investigated and tailored for use with the sensor. The chemical vapor deposition (CVD) AlN deposition process was successfully transferred from film production on tungsten carbide substrates to titanium alloy and silicon carbide (SiC) substrates in the first year of the program, and additional substrates were evaluated. In the second year of the program, additional substrate research was performed with the goal of improving the performance of using SiC substrates. While greatly improved bandwidth was achieved, sensor survival at elevated temperature remains problematic. The elevated temperature coupling work continued with significant experimentation. Molten glasses were found to work within a limited temperature range, but metal foils applied with heat and pressure were found to have superior performance overall. The final year of the program will be dedicated to making further advances in AlN/ substrate behavior, and the design and implementation of a sensor demonstration experiment at very high temperature in a simulated industrial application.

  19. Elevated Temperature Sensors for On-Line Critical Equipment Health Monitoring

    SciTech Connect (OSTI)

    James Sebastian

    2006-03-31T23:59:59.000Z

    The objective of the program was to improve high temperature piezoelectric aluminum nitride (AlN) sensor technology to make it useful for instrumentation and health monitoring of current and future electrical power generation equipment. Improvements were aimed primarily at extending the useful temperature range of the sensor from approximately 700 C to above 1000 C, and investigating ultrasonic coupling to objects at these temperatures and tailoring high temperature coupling for use with the sensor. During the project, the chemical vapor deposition (CVD) AlN deposition process was successfully transferred from film production on tungsten carbide substrates to titanium alloy and silicon carbide (SiC) substrates. Film adhesion under thermal cycling was found to be poor, and additional substrate materials and surface preparations were evaluated. A new, porous SiC substrate improved the performance but not to the point of making the films useful for sensors. Near the end of the program, a new family of high temperature piezoelectric materials came to the attention of the program. Samples of langasite, the most promising member of this family, were obtained and experimental data showed promise for use up to the 1000 C target temperature. In parallel, research successfully determined that metal foil under moderate pressure provided a practical method of coupling ultrasound at high temperature. A conceptual sensor was designed based upon these methods and was tested in the laboratory.

  20. Dynamic Rotor Deformation and Vibration Monitoring Using a Non-Incremental Laser Doppler Distance Sensor

    SciTech Connect (OSTI)

    Pfister, Thorsten; Guenther, Philipp; Dreier, Florian; Czarske, Juergen [Technische Universitaet Dresden, Faculty of Electrical Engineering and Information Technology, Laboratory for Measurement and Testing Techniques, Helmholtzstrasse 18, D-01062 Dresden (Germany)

    2010-05-28T23:59:59.000Z

    Monitoring rotor deformations and vibrations dynamically is an important task for improving the safety and the lifetime as well as the energy efficiency of motors and turbo machines. However, due to the high rotor speed encountered in particular at turbo machines, this requires concurrently a high measurement rate and high accuracy, which can not be fulfilled by most commercially available sensors. To solve this problem, we developed a non-incremental laser Doppler distance sensor (LDDS), which is able to measure simultaneously the in-plane velocity and the out-of-plane position of moving rough solid objects with micrometer precision. In addition, this sensor concurrently offers a high temporal resolution in the microsecond range, because its position uncertainty is in principle independent of the object velocity in contrast to conventional distance sensors, which is a unique feature of the LDDS. Consequently, this novel sensor enables precise and dynamic in-process deformation and vibration measurements on rotating objects, such as turbo machine rotors, even at very high speed. In order to evidence the capability of the LDDS, measurements of rotor deformations (radial expansion), vibrations and wobbling motions are presented at up to 50,000 rpm rotor speed.

  1. Intelligent Monitoring System With High Temperature Distributed Fiberoptic Sensor For Power Plant Combustion Processes

    SciTech Connect (OSTI)

    Kwang Y. Lee; Stuart S. Yin; Andre Boheman

    2005-12-26T23:59:59.000Z

    The objective of the proposed work is to develop an intelligent distributed fiber optical sensor system for real-time monitoring of high temperature in a boiler furnace in power plants. Of particular interest is the estimation of spatial and temporal distributions of high temperatures within a boiler furnace, which will be essential in assessing and controlling the mechanisms that form and remove pollutants at the source, such as NOx. The basic approach in developing the proposed sensor system is three fold: (1) development of high temperature distributed fiber optical sensor capable of measuring temperatures greater than 2000 C degree with spatial resolution of less than 1 cm; (2) development of distributed parameter system (DPS) models to map the three-dimensional (3D) temperature distribution for the furnace; and (3) development of an intelligent monitoring system for real-time monitoring of the 3D boiler temperature distribution. Under Task 1, we set up a dedicated high power, ultrafast laser system for fabricating in-fiber gratings in harsh environment optical fibers, successfully fabricated gratings in single crystal sapphire fibers by the high power laser system, and developed highly sensitive long period gratings (lpg) by electric arc. Under Task 2, relevant mathematical modeling studies of NOx formation in practical combustors. Studies show that in boiler systems with no swirl, the distributed temperature sensor may provide information sufficient to predict trends of NOx at the boiler exit. Under Task 3, we investigate a mathematical approach to extrapolation of the temperature distribution within a power plant boiler facility, using a combination of a modified neural network architecture and semigroup theory. The 3D temperature data is furnished by the Penn State Energy Institute using FLUENT. Given a set of empirical data with no analytic expression, we first develop an analytic description and then extend that model along a single axis. Extrapolation capability was demonstrated for estimating enthalpy in a power plant.

  2. Lightweight Remote Image Management for Secure Code Dissemination in Wireless Sensor Networks

    E-Print Network [OSTI]

    Ning, Peng

    , all as security extensions to the state-of-the- art code dissemination system named Deluge. However with Seluge, a security extension to Deluge for injecting new code images. We perform a substantial set], [12], [15], [21], [23], [24] have been proposed for wireless sensor networks. Deluge [12] is generally

  3. Remote and Centralized Monitoring of PV Power Csaba Kopacz, Sergiu Spataru, Dezso Sera, and Tamas Kerekes

    E-Print Network [OSTI]

    Sera, Dezso

    curve measurements from the inverters within each PV plant. The monitoring software stores the PVRemote and Centralized Monitoring of PV Power Plants Csaba Kopacz, Sergiu Spataru, Dezso Sera-cost and flexible monitoring system for PV plants. Compared to classical solutions which can require dedicated

  4. PASSIVE WIRELESS SURFACE ACOUSTIC WAVE SENSORS FOR MONITORING SEQUESTRATION SITES CO2 EMISSION

    SciTech Connect (OSTI)

    Wang, Yizhong; Chyu, Minking; Wang, Qing-Ming

    2012-11-30T23:59:59.000Z

    University of Pittsburgh’s Transducer lab has teamed with the U.S. Department of Energy’s National Energy Technology Laboratory (DOE NETL) to conduct a comprehensive study to develop/evaluate low-cost, efficient CO2 measuring technologies for geological sequestration sites leakage monitoring. A passive wireless CO2 sensing system based on surface acoustic wave technology and carbon nanotube nanocomposite was developed. Surface acoustic wave device was studied to determine the optimum parameters. Delay line structure was adopted as basic sensor structure. CNT polymer nanocomposite was fabricated and tested under different temperature and strain condition for natural environment impact evaluation. Nanocomposite resistance increased for 5 times under pure strain, while the temperature dependence of resistance for CNT solely was -1375ppm/?. The overall effect of temperature on nanocomposite resistance was -1000ppm/?. The gas response of the nanocomposite was about 10% resistance increase under pure CO2. The sensor frequency change was around 300ppm for pure CO2. With paralyne packaging, the sensor frequency change from relative humidity of 0% to 100% at room temperature decreased from over 1000ppm to less than 100ppm. The lowest detection limit of the sensor is 1% gas concentration, with 36ppm frequency change. Wireless module was tested and showed over one foot transmission distance at preferred parallel orientation.

  5. Accepted Manuscript Remote Monitoring Cost Minimization for An Unreliable Sensor Network with

    E-Print Network [OSTI]

    Liang, Weifa

    are geographically located in other states such as Queens- land, Tasmania, and Western Australia. The sensing data, The Australian National University, Canberra, ACT 2601, Australia Abstract In this paper we consider a link of the heuristic include identifying gateways and finding an energy-efficient forest of routing trees rooted

  6. Development of a Remote Monitoring Sensor Network for In-Situ Decommissioned Structures

    Broader source: Energy.gov [DOE]

    On October 19-22, 2010, an independent expert panel of scientists and engineers met to assist the Department of Energy (DOE) and the Savannah River National Laboratory in developing a technical...

  7. Elevated Temperature Sensors for On-Line Critical Equipment Health Monitoring

    SciTech Connect (OSTI)

    James Sebastian

    2003-09-29T23:59:59.000Z

    The objective of this research program is to improve high temperature piezoelectric aluminum nitride (AlN) sensor technology to make it useful for instrumentation and health monitoring of current and future electrical power generation equipment. The program will extend the temperature range of the sensor from approximately 700 C to above 1000 C, and ultrasonic coupling to objects at these temperatures will be investigated and tailored for use with the sensor. The chemical vapor deposition (CVD) AlN deposition process was successfully transferred from film production on tungsten carbide substrates to titanium alloy and silicon carbide (SiC) substrates. Further evaluation of the piezoelectric films on titanium caused it to be discarded as a candidate material due to an excessive thermal expansion coefficient mismatch, causing film failure upon reheating from room temperature. Deposition on SiC is proceeding well, with a highly conductive grade of silicon carbide required for practical use. Additional substrate materials, including refractory metals and conductive ceramics, have been considered but are generally not promising in light of the experience with titanium. Pulsed laser deposition (PLD) was investigated as an alternate means of creating the films as an alternative to CVD. A concurrent effort has focused on investigation of means of coupling ultrasound from the sensor into the test object at high temperature. A literature search combined with preliminary experimentation has resulted in the selection of two methods for coupling: low melting point glasses and metal foil- pressure couplant. The work in the next two years of the program will include continued improvement of the CVD deposition process, experimental testing of films and coupling at high temperatures, and a laboratory demonstration of the sensor in a simulated industrial application

  8. Micro- and Mini-nitrate Sensors for Monitoring of Soils, Groundwater and Aquatic Systems

    E-Print Network [OSTI]

    2009-01-01T23:59:59.000Z

    Nitrate Mini-Sensor with PVC membrane containing liquidmin) Mini-sensors with PVC maintain their sensitivity duringfabricated mini- sensors with PVC membranes showed better

  9. Health Monitoring of Drive Connected Three-Phase Induction Motors ----- From Wired Towards Wireless Sensor Networks

    E-Print Network [OSTI]

    Xue, Xin

    2009-01-01T23:59:59.000Z

    On the application of wireless sensor networks in conditionLewis, "Energy-efficient wireless sensor network design andin dense wireless sensor networks," in Proceedings of the

  10. Health Monitoring of Drive Connected Three-Phase Induction Motors ----- From Wired Towards Wireless Sensor Networks

    E-Print Network [OSTI]

    Xue, Xin

    2009-01-01T23:59:59.000Z

    A Statistical Evaluation," in Sensor, Mesh and Ad Hocmotor. Wireless sensor spectrum Evaluation board spectruminside Wired sensor outside Evaluation board outside (b)

  11. A scalable 2.9mW 1Mb/s eTextiles body area network transceiver with remotely powered sensors and bi-directional data communication

    E-Print Network [OSTI]

    Desai, Nachiket

    Advances in sensor design have made ambulatory health monitoring possible and have created the need for low-power communication systems to replace bulkier traditional links. Micropower sensors should also be powered by a ...

  12. Harnessing Smart Sensor Technology for Industrial Energy Efficiency- Making Process-Specific Efficiency Projects Cost Effective with a Broadly Configurable, Network-Enabled Monitoring Tool 

    E-Print Network [OSTI]

    Wiczer, J. J.; Wiczer, M. B.

    2011-01-01T23:59:59.000Z

    To improve monitoring technology often re-quired by industrial energy efficiency projects, we have developed a set of power and process monitoring tools based on the IEEE 1451.2 smart sensor interface standard. These tools enable a wide...

  13. Acoustic-wave sensor for ambient monitoring of a photoresist-stripping agent

    DOE Patents [OSTI]

    Pfeifer, Kent B. (Los Lunas, NM); Hoyt, Andrea E. (Albuquerque, NM); Frye, Gregory C. (Cedar Crest, NM)

    1998-01-01T23:59:59.000Z

    The acoustic-wave sensor. The acoustic-wave sensor is designed for ambient or vapor-phase monitoring of a photoresist-stripping agent such as N-methylpyrrolidinone (NMP), ethoxyethylpropionate (EEP) or the like. The acoustic-wave sensor comprises an acoustic-wave device such as a surface-acoustic-wave (SAW) device, a flexural-plate-wave (FPW) device, an acoustic-plate-mode (APM) device, or a thickness-shear-mode (TSM) device (also termed a quartz crystal microbalance or QCM) having a sensing region on a surface thereof. The sensing region includes a sensing film for sorbing a quantity of the photoresist-stripping agent, thereby altering or shifting a frequency of oscillation of an acoustic wave propagating through the sensing region for indicating an ambient concentration of the agent. According to preferred embodiments of the invention, the acoustic-wave device is a SAW device; and the sensing film comprises poly(vinylacetate), poly(N-vinylpyrrolidinone), or poly(vinylphenol).

  14. Acoustic-wave sensor for ambient monitoring of a photoresist-stripping agent

    DOE Patents [OSTI]

    Pfeifer, K.B.; Hoyt, A.E.; Frye, G.C.

    1998-08-18T23:59:59.000Z

    The acoustic-wave sensor is disclosed. The acoustic-wave sensor is designed for ambient or vapor-phase monitoring of a photoresist-stripping agent such as N-methylpyrrolidinone (NMP), ethoxyethylpropionate (EEP) or the like. The acoustic-wave sensor comprises an acoustic-wave device such as a surface-acoustic-wave (SAW) device, a flexural-plate-wave (FPW) device, an acoustic-plate-mode (APM) device, or a thickness-shear-mode (TSM) device (also termed a quartz crystal microbalance or QCM) having a sensing region on a surface thereof. The sensing region includes a sensing film for sorbing a quantity of the photoresist-stripping agent, thereby altering or shifting a frequency of oscillation of an acoustic wave propagating through the sensing region for indicating an ambient concentration of the agent. According to preferred embodiments of the invention, the acoustic-wave device is a SAW device; and the sensing film comprises poly(vinylacetate), poly(N-vinylpyrrolidinone), or poly(vinylphenol). 3 figs.

  15. The design and enhancement of a testbed for the remote system monitoring interface device technology

    E-Print Network [OSTI]

    Turner, Regan Christopher

    2013-02-22T23:59:59.000Z

    Texas A&M University is developing an information technology-based system that is able to continuously monitor and diagnose faults of electrical motors, based solely on electrical signals available at the motor terminals, such as current and voltage...

  16. The development of a remote monitoring system for the Nuclear Science Center reactor

    E-Print Network [OSTI]

    Jiltchenkov, Dmitri Victorovich

    2002-01-01T23:59:59.000Z

    With funding provided by Nuclear Energy Research Initiative (NERI), design of Secure, Transportable, Autonomous Reactors (STAR) to aid countries with insufficient energy supplies is underway. The development of a new monitoring system that allows...

  17. System for remote multichannel real-time monitoring of mouse ECG via the Internet

    E-Print Network [OSTI]

    Oefinger, Matthew Blake, 1976-

    2003-01-01T23:59:59.000Z

    A hardware/software system was developed to allow real-time monitoring of multiple physiological signals simultaneously via the Internet. The hardware is specifically designed for measuring ECG signals from mice, while the ...

  18. Development of Nuclear Reactor remote Monitoring software (NRM) for the Star project

    E-Print Network [OSTI]

    Gautier, Vincent Charles

    2002-01-01T23:59:59.000Z

    operations support for multiple plants, guarantee safety and nonproliferation, and improve cost-effectiveness. NRM allows soft real time monitoring of the reactor power, primary and secondary coolant temperatures, control rod movement, and secondary coolant...

  19. Pipeline Structural Health Monitoring Using Macro-fiber Composite Active Sensors

    SciTech Connect (OSTI)

    A.B. Thien

    2006-03-01T23:59:59.000Z

    The United States economy is heavily dependent upon a vast network of pipeline systems to transport and distribute the nation's energy resources. As this network of pipelines continues to age, monitoring and maintaining its structural integrity remains essential to the nation's energy interests. Numerous pipeline accidents over the past several years have resulted in hundreds of fatalities and billions of dollars in property damages. These accidents show that the current monitoring methods are not sufficient and leave a considerable margin for improvement. To avoid such catastrophes, more thorough methods are needed. As a solution, the research of this thesis proposes a structural health monitoring (SHM) system for pipeline networks. By implementing a SHM system with pipelines, their structural integrity can be continuously monitored, reducing the overall risks and costs associated with current methods. The proposed SHM system relies upon the deployment of macro-fiber composite (MFC) patches for the sensor array. Because MFC patches are flexible and resilient, they can be permanently mounted to the curved surface of a pipeline's main body. From this location, the MFC patches are used to monitor the structural integrity of the entire pipeline. Two damage detection techniques, guided wave and impedance methods, were implemented as part of the proposed SHM system. However, both techniques utilize the same MFC patches. This dual use of the MFC patches enables the proposed SHM system to require only a single sensor array. The presented Lamb wave methods demonstrated the ability to correctly identify and locate the presence of damage in the main body of the pipeline system, including simulated cracks and actual corrosion damage. The presented impedance methods demonstrated the ability to correctly identify and locate the presence of damage in the flanged joints of the pipeline system, including the loosening of bolts on the flanges. In addition to damage to the actual pipeline itself, the proposed methods were used to demonstrate the capability of detecting deposits inside of pipelines. Monitoring these deposits can prevent clogging and other hazardous situations. Finally, suggestions are made regarding future research issues which are needed to advance this research. Because the research of this thesis has only demonstrated the feasibility of the techniques for such a SHM system, these issues require attention before any commercial applications can be realized.

  20. Millimeter Wave Sensor Technologies Track Biometrics; Detect Chemicals, Gases, and Radiation: Argonne’s millimeter wave (mmW) sensor technologies measure a wide range of threat materials remotely

    Energy Innovation Portal (Marketing Summaries) [EERE]

    2013-04-15T23:59:59.000Z

    Security threats come in many forms—airborne, radiative, gaseous, human, or infiltrative—and it can be costly and impractical to deploy a broad suite of detector technologies to identify all potential hazards in public places. Argonne’s millimeter wave (mmW) sensor technologies measure a wide range of threat materials remotely, making them well suited to many security, industrial and medical applications....

  1. EXTENDED PERFORMANCE HANDHELD AND MOBILE SENSORS FOR REMOTE DETECTION OF NATURAL GAS LEAKS

    SciTech Connect (OSTI)

    Michael B. Frish; B. David Green; Richard T. Wainner; Francesca Scire-Scappuzzo; Paul Cataldi; Matthew C. Laderer

    2005-05-01T23:59:59.000Z

    This report summarizes work performed by Physical Sciences Inc. (PSI) to advance the state-of-the-art of surveying for leaks of natural gas from transmission and distribution pipelines. The principal project goal was to develop means of deploying on an automotive platform an improved version of the handheld laser-based standoff natural gas leak detector previously developed by PSI and known as the Remote Methane Leak Detector or RMLD. A laser beam which interrogates the air for methane is projected from a spinning turret mounted upon a van. As the van travels forward, the laser beam scans an arc to the front and sides of the van so as to survey across streets and to building walls from a moving vehicle. When excess methane is detected within the arc, an alarm is activated. In this project, we built and tested a prototype Mobile RMLD (MRMLD) intended to provide lateral coverage of 10 m and one lateral scan for every meter of forward motion at forward speeds up to 10 m/s. Using advanced detection algorithms developed as part of this project, the early prototype MRMLD, installed on the back of a truck, readily detected simulated gas leaks of 50 liters per hour. As a supplement to the originally planned project, PSI also participated in a DoE demonstration of several gas leak detection systems at the Rocky Mountain Oilfield Testing Center (RMOTC) during September 2004. Using a handheld RMLD upgraded with the advanced detection algorithms developed in this project, from within a moving vehicle we readily detected leaks created along the 7.4 mile route of a virtual gas transmission pipeline.

  2. New Electronic Sensors Stick to Your Skin -Heart Rate Monitors -Popular Mechanics http://www.popularmechanics.com/science/health/breakthroughs/new-electronic-sensors-stick-to-your-skin?click=pm_latest[8/14/2011 5:59:45 AM

    E-Print Network [OSTI]

    Rogers, John A.

    New Electronic Sensors Stick to Your Skin - Heart Rate Monitors - Popular Mechanics http://www Electronic Sensors That Stick to Your Skin Like Temporary Tattoos Nice tattoo. Or is it a heart-rate monitor to measure the electrical activity of the heart, muscles and brain. And using the same principles behind

  3. Energy and task management in energy harvesting wireless sensor networks for structural health monitoring

    E-Print Network [OSTI]

    Steck, Jamie Bradley

    2009-01-01T23:59:59.000Z

    Chapter 3. Structural Health Monitoring . . . . . . . 1.3. Structural Health Monitoring . 4. Thesisoverview of wireless structural health monitoring for civil

  4. Integrated Process Monitoring based on Systems of Sensors for Enhanced Nuclear Safeguards Sensitivity and Robustness

    SciTech Connect (OSTI)

    Humberto E. Garcia

    2014-07-01T23:59:59.000Z

    This paper illustrates safeguards benefits that process monitoring (PM) can have as a diversion deterrent and as a complementary safeguards measure to nuclear material accountancy (NMA). In order to infer the possible existence of proliferation-driven activities, the objective of NMA-based methods is often to statistically evaluate materials unaccounted for (MUF) computed by solving a given mass balance equation related to a material balance area (MBA) at every material balance period (MBP), a particular objective for a PM-based approach may be to statistically infer and evaluate anomalies unaccounted for (AUF) that may have occurred within a MBP. Although possibly being indicative of proliferation-driven activities, the detection and tracking of anomaly patterns is not trivial because some executed events may be unobservable or unreliably observed as others. The proposed similarity between NMA- and PM-based approaches is important as performance metrics utilized for evaluating NMA-based methods, such as detection probability (DP) and false alarm probability (FAP), can also be applied for assessing PM-based safeguards solutions. To this end, AUF count estimates can be translated into significant quantity (SQ) equivalents that may have been diverted within a given MBP. A diversion alarm is reported if this mass estimate is greater than or equal to the selected value for alarm level (AL), appropriately chosen to optimize DP and FAP based on the particular characteristics of the monitored MBA, the sensors utilized, and the data processing method employed for integrating and analyzing collected measurements. To illustrate the application of the proposed PM approach, a protracted diversion of Pu in a waste stream was selected based on incomplete fuel dissolution in a dissolver unit operation, as this diversion scenario is considered to be problematic for detection using NMA-based methods alone. Results demonstrate benefits of conducting PM under a system-centric strategy that utilizes data collected from a system of sensors and that effectively exploits known characterizations of sensors and facility operations in order to significantly improve anomaly detection, reduce false alarm, and enhance assessment robustness under unreliable partial sensor information.

  5. 1999 IEEE international geoscience and remote sensing symposium

    SciTech Connect (OSTI)

    NONE

    1999-07-01T23:59:59.000Z

    The theme of IGARSS'99, ``Remote Sensing of the System Earth--A Challenge for the 21st Century,'' shows how earth observation based on satellite remote sensing can significantly contribute to the future study of the environment and the changes it is undergoing, whether from natural causes or human activities. The wide range of topics offers an interdisciplinary approach and suggests integrated techniques and theory in remote sensing are essential for modeling and understanding the environment. Topics covered include: new instrumentation and future systems; high resolution SAR/InSAR; earth system science educational initiative; data fusion; radar sensing of ice sheets; image processing techniques; clouds and ice particles; internal waves; natural hazards and disaster monitoring; advanced passive and active sensors and sensor calibration; radar assessment of rain, oil spills and natural slicks; data standards and distribution; and vegetation monitoring using BRDF approaches.

  6. Monitoring Isostatic Rebound in Antarctica with the Use of Continuous Remote GPS Observations

    E-Print Network [OSTI]

    Tregoning, Paul

    such application is the monitoring of (postgla- cial) isostatic rebound. When large ice caps melt, the lithosphere varies depend- ing on the shape of the ice cap and both the amount and timing of the melting that has on the Lambert Giacier and surrounding piateau. distinguish between different models of ice melting

  7. UNMANNED AERIAL VEHICLE (UAV) HYPERSPECTRAL REMOTE SENSING FOR DRYLAND VEGETATION MONITORING

    SciTech Connect (OSTI)

    Nancy F. Glenn; Jessica J. Mitchell; Matthew O. Anderson; Ryan C. Hruska

    2012-06-01T23:59:59.000Z

    UAV-based hyperspectral remote sensing capabilities developed by the Idaho National Lab and Idaho State University, Boise Center Aerospace Lab, were recently tested via demonstration flights that explored the influence of altitude on geometric error, image mosaicking, and dryland vegetation classification. The test flights successfully acquired usable flightline data capable of supporting classifiable composite images. Unsupervised classification results support vegetation management objectives that rely on mapping shrub cover and distribution patterns. Overall, supervised classifications performed poorly despite spectral separability in the image-derived endmember pixels. Future mapping efforts that leverage ground reference data, ultra-high spatial resolution photos and time series analysis should be able to effectively distinguish native grasses such as Sandberg bluegrass (Poa secunda), from invasives such as burr buttercup (Ranunculus testiculatus) and cheatgrass (Bromus tectorum).

  8. Battery-free Wireless Sensor Network For Advanced Fossil-Fuel Based Power Generation

    SciTech Connect (OSTI)

    Yi Jia

    2011-02-28T23:59:59.000Z

    This report summarizes technical progress achieved during the project supported by the Department of Energy under Award Number DE-FG26-07NT4306. The aim of the project was to conduct basic research into battery-free wireless sensing mechanism in order to develop novel wireless sensors and sensor network for physical and chemical parameter monitoring in a harsh environment. Passive wireless sensing platform and five wireless sensors including temperature sensor, pressure sensor, humidity sensor, crack sensor and networked sensors developed and demonstrated in our laboratory setup have achieved the objective for the monitoring of various physical and chemical parameters in a harsh environment through remote power and wireless sensor communication, which is critical to intelligent control of advanced power generation system. This report is organized by the sensors developed as detailed in each progress report.

  9. Structural Health Monitoring of Superconducting Magnets at CERN Using Fiber Bragg Grating Sensors

    E-Print Network [OSTI]

    Chiuchiolo, A; Perez, J C; Bajas, H; Guinchard, M; Giordano, M; Breglio, G; Consales, M; Cusano, A

    2014-01-01T23:59:59.000Z

    The use of Fiber Bragg Grating sensors is becoming particularly challenging for monitoring different parameters in extreme operative conditions such as ultra-low temperatures, high electromagnetic fields and strong mechanical stresses. This work reports the use of the FBG for a new generation of accelerator magnets with the goal to develop an adequate sensing technology able to provide complementary or alternative information to the conventional strain gauges through the whole service life of the magnet. The study is focused on the mechanical performances of the magnet structure, which has to preserve the sensitive coils from any damage during the entire magnet fabrication process preventing even microscopic movements of the winding that can eventually initiate a transition from superconducting to normal conducting state of the material used (called in the specific literature as “quench”). The FBGs have been glued on the aluminium structure of two magnets prototypes by using an adhesive suitable for cryog...

  10. SENVM: Server Environment Monitoring and Controlling System for a Small Data Center Using Wireless Sensor Network

    E-Print Network [OSTI]

    Choochaisri, Supasate; Jenjaturong, Saran; Intanagonwiwat, Chalermek; Ratanamahatana, Chotirat Ann

    2011-01-01T23:59:59.000Z

    In recent years, efficient energy utilization becomes an essential requirement for data centers, especially in data centers of world-leading companies, where "Green Data Center" defines a new term for an environment-concerned data center. Solutions to change existing a data center to the green one may vary. In the big company, high-cost approaches including re-planning server rooms, changing air-conditioners, buying low-powered servers, and equipping sophisticating environmental control equipments are possible, but not for small to medium enterprises (SMEs) and academic sectors which have limited budget. In this paper, we propose a novel system, SENVM, used to monitor and control air temperature in a server room to be in appropriate condition, not too cold, where very unnecessary cooling leads to unnecessary extra electricity expenses, and also inefficient in energy utilization. With implementing on an emerging technology, Wireless Sensor Network (WSN), Green Data Center is feasible to every small data center...

  11. Progress In Electromagnetics Research M, Vol. 37, 1120, 2014 Energy Optimized Wireless Sensor Network for Monitoring inside

    E-Print Network [OSTI]

    Halgamuge, Malka N.

    , lighting, cooling, humidity levels and ventilation systems in a building using the electronic devicesProgress In Electromagnetics Research M, Vol. 37, 11­20, 2014 Energy Optimized Wireless Sensor. INTRODUCTION Building Automation System (BAS) challenges to monitor and have automatic control of the security

  12. 1-4244-2575-4/08/$20.00 c 2008 IEEE Connectivity Monitoring in Wireless Sensor Networks

    E-Print Network [OSTI]

    Chan, Mun Choon

    of the network connectivity is crucial. In this paper, we propose a flexible and efficient connectivity transmission, limited energy resource, ad- hoc deployment and factors such as obstacles and move- ment1-4244-2575-4/08/$20.00 c 2008 IEEE Connectivity Monitoring in Wireless Sensor Networks Mingze

  13. Large scale nuclear sensor monitoring and diagnostics by means of an ensemble of regression models based on Evolving Clustering Methods

    E-Print Network [OSTI]

    Boyer, Edmond

    Large scale nuclear sensor monitoring and diagnostics by means of an ensemble of regression models , Enrico Ziob a Institute for Energy Technology, Halden, Norway b Polytechnic of Milan, Milan, Italy actions for safely steering critical situations and preventing accidents. To avoid misleading information

  14. Health Monitoring of Drive Connected Three-Phase Induction Motors ----- From Wired Towards Wireless Sensor Networks

    E-Print Network [OSTI]

    Xue, Xin

    2009-01-01T23:59:59.000Z

    5.7: Wireless sensor installation photo (a) accelerometer (5.7 Wireless sensor installation photo (a) accelerometer (b)set up (a) Photo (b) Diagram (b) Sensor: Three vibration

  15. Electromagnetic material changes for remote detection and monitoring: a feasibility study: Progress report

    SciTech Connect (OSTI)

    McCloy, John S.; Jordan, David V.; Kelly, James F.; McMakin, Douglas L.; Johnson, Bradley R.; Campbell, Luke W.

    2009-09-01T23:59:59.000Z

    A new concept for radiation detection is proposed, allowing a decoupling of the sensing medium and the readout. An electromagnetic material, such as a magnetic ceramic ferrite, is placed near a source to be tracked such as a shipping container. The electromagnetic material changes its properties, in this case its magnetic permeability, as a function of radiation. This change is evident as a change in reflection frequency and magnitude when probed using a microwave/millimeter-wave source. This brief report discusses modeling of radiation interaction of various candidate materials using a radiation detector modeling code Geant4, system design considerations for the remote readout, and some theory of the material interaction physics. The theory of radiation change in doped magnetic insulator ferrites such as yttrium iron garnet (YIG) seems well founded based on literature documentation of the photomagnetic effect. The literature also suggests sensitivity of permittivity to neutrons in some ferroelectrics. Research to date indicates that experimental demonstration of these effects in the context of radiation detection is warranted.

  16. Textile-Based Sensor Development for the Continuous Monitoring of Proper Orthopedic Cast Fit

    E-Print Network [OSTI]

    Umsted, Carson Andrew

    2013-01-01T23:59:59.000Z

    Evaluation .. 13 Chapter 3: Sensorforce sensor worked very well in the evaluation phase andthe sensor performance was good in initial evaluation, to be

  17. Optimal Remote Homing for Providing Service Differentiation in Information-Aware Multi-Layered Wireless Sensor Networks

    E-Print Network [OSTI]

    Vokkarane, Vinod M.

    -Layered Wireless Sensor Networks Jianping Wang Department of Computer Sciences Georgia Southern University@umassd.edu Abstract-- Sensor networks are fundamentally deployed to handle extreme behaviors across sensing sites. Service differen- tiation in information-aware wireless sensor network refers to the ability to provide

  18. Remote shock sensing and notification system

    DOE Patents [OSTI]

    Muralidharan, Govindarajan (Knoxville, TN) [Knoxville, TN; Britton, Charles L. (Alcoa, TN) [Alcoa, TN; Pearce, James (Lenoir City, TN) [Lenoir City, TN; Jagadish, Usha (Knoxville, TN) [Knoxville, TN; Sikka, Vinod K. (Oak Ridge, TN) [Oak Ridge, TN

    2010-11-02T23:59:59.000Z

    A low-power shock sensing system includes at least one shock sensor physically coupled to a chemical storage tank to be monitored for impacts, and an RF transmitter which is in a low-power idle state in the absence of a triggering signal. The system includes interface circuitry including or activated by the shock sensor, wherein an output of the interface circuitry is coupled to an input of the RF transmitter. The interface circuitry triggers the RF transmitter with the triggering signal to transmit an alarm message to at least one remote location when the sensor senses a shock greater than a predetermined threshold. In one embodiment the shock sensor is a shock switch which provides an open and a closed state, the open state being a low power idle state.

  19. Remote shock sensing and notification system

    DOE Patents [OSTI]

    Muralidharan, Govindarajan (Knoxville, TN); Britton, Charles L. (Alcoa, TN); Pearce, James (Lenoir City, TN); Jagadish, Usha (Knoxville, TN); Sikka, Vinod K. (Oak Ridge, TN)

    2008-11-11T23:59:59.000Z

    A low-power shock sensing system includes at least one shock sensor physically coupled to a chemical storage tank to be monitored for impacts, and an RF transmitter which is in a low-power idle state in the absence of a triggering signal. The system includes interference circuitry including or activated by the shock sensor, wherein an output of the interface circuitry is coupled to an input of the RF transmitter. The interface circuitry triggers the RF transmitting with the triggering signal to transmit an alarm message to at least one remote location when the sensor senses a shock greater than a predetermined threshold. In one embodiment the shock sensor is a shock switch which provides an open and a closed state, the open state being a low power idle state.

  20. A Wireless Sensor Network for Structural Health Monitoring: Performance and Experience

    E-Print Network [OSTI]

    Paek, Jeongyeup; Chintalapudi, Krishna; Caffrey, John; Govindan, Ramesh; Masri, Sami

    2005-01-01T23:59:59.000Z

    ing Unit for Structural Health Monitoring. In Proc. of theNetwork for Structural Health Monitoring: Performance andIntroduction Structural Health Monitoring (SHM) focuses on

  1. Gas centrifuge enrichment plants inspection frequency and remote monitoring issues for advanced safeguards implementation

    SciTech Connect (OSTI)

    Boyer, Brian David [Los Alamos National Laboratory; Erpenbeck, Heather H [Los Alamos National Laboratory; Miller, Karen A [Los Alamos National Laboratory; Ianakiev, Kiril D [Los Alamos National Laboratory; Reimold, Benjamin A [Los Alamos National Laboratory; Ward, Steven L [Los Alamos National Laboratory; Howell, John [GLASGOW UNIV.

    2010-09-13T23:59:59.000Z

    Current safeguards approaches used by the IAEA at gas centrifuge enrichment plants (GCEPs) need enhancement in order to verify declared low enriched uranium (LEU) production, detect undeclared LEU production and detect high enriched uranium (BEU) production with adequate probability using non destructive assay (NDA) techniques. At present inspectors use attended systems, systems needing the presence of an inspector for operation, during inspections to verify the mass and {sup 235}U enrichment of declared cylinders of uranium hexafluoride that are used in the process of enrichment at GCEPs. This paper contains an analysis of how possible improvements in unattended and attended NDA systems including process monitoring and possible on-site destructive analysis (DA) of samples could reduce the uncertainty of the inspector's measurements providing more effective and efficient IAEA GCEPs safeguards. We have also studied a few advanced safeguards systems that could be assembled for unattended operation and the level of performance needed from these systems to provide more effective safeguards. The analysis also considers how short notice random inspections, unannounced inspections (UIs), and the concept of information-driven inspections can affect probability of detection of the diversion of nuclear material when coupled to new GCEPs safeguards regimes augmented with unattended systems. We also explore the effects of system failures and operator tampering on meeting safeguards goals for quantity and timeliness and the measures needed to recover from such failures and anomalies.

  2. Health Monitoring of Drive Connected Three-Phase Induction Motors ----- From Wired Towards Wireless Sensor Networks

    E-Print Network [OSTI]

    Xue, Xin

    2009-01-01T23:59:59.000Z

    and structures," Structural Health Monitoring, vol. 3, p. W.principal concerns: Structural Health Monitoring (SHM), Non-

  3. availiable remote sensing: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Remote SensingThermal Infrared Remote Sensing Thermal infrared) and thermal infrared energy (3.0 - 14 m). However, thermal infrared sensors allow humans to sense 2 Thermal...

  4. atmospheric remote sensing: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Infrared Remote SensingThermal Infrared Remote Sensing Thermal infrared) and thermal infrared energy (3.0 - 14 m). However, thermal infrared sensors allow humans to...

  5. aerospace remote sensing: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Remote SensingThermal Infrared Remote Sensing Thermal infrared) and thermal infrared energy (3.0 - 14 m). However, thermal infrared sensors allow humans to sense 2 Thermal...

  6. Remote noninvasive allograft rejection monitoring for heart transplant recipients: study protocol for the novel evaluation with home electrocardiogram and remote transmission (NEW HEART) study

    E-Print Network [OSTI]

    Doering, Lynn V; Hickey, Kathleen; Pickham, David; Chen, Belinda; Drew, Barbara J

    2012-01-01T23:59:59.000Z

    allograft recipients. J Heart Lung Transplant 2005, 24(7Another Little Piece of My Heart Now": Should Endomyocardialrejection monitoring for heart transplant recipients: study

  7. Dissolved oxygen and pH monitoring within cell culture media using a hydrogel microarray sensor 

    E-Print Network [OSTI]

    Lee, Seung Joon

    2009-05-15T23:59:59.000Z

    based on the fluorescence image of the sensor. The system included a blue LED as an illumination source, coupling optics, interference filters and a compact moisture resistant CCD camera. Various tests were performed for the sensor (sensitivity...

  8. A Wireless Bladder Volume Monitoring System Using a Flexible Capacitance-based Sensor

    E-Print Network [OSTI]

    Chiao, Jung-Chih

    -based sensor was laser-micromachined from a polyimide film to form an interdigitated finger structure, followed to flexible polyimide to enhance sensor elasticity and longevity. The device size was reduced so that it could polyimide

  9. Monitoring Quality Maximization through Fair Rate Allocation in Harvesting Sensor Networks

    E-Print Network [OSTI]

    Liang, Weifa

    Abstract--In this paper, we consider an energy harvesting sensor network where sensors are powered by reusable energy such as solar energy, wind energy, and so on, from their surroundings. We first formulate to energy budgets of sensors. Unlike the most existing work that formulated the similar problem as a linear

  10. STRAIN MONITORING IN STIFFENED COMPOSITE PANELS USING EMBEDDED FIBRE OPTICAL AND STRAIN GAUGE SENSORS

    E-Print Network [OSTI]

    Boyer, Edmond

    (SHM) system based on Fibre Optic Bragg Grating (FOBG) sensors and standard resistance strain gauges for CFRP fuselage stiffened panels based on fibre optic Bragg grating sensors for the Green Regional. Among these approaches, methods based on optical [1]-[6] sensors are among the most rapidly developing

  11. The application of formal software engineering methods to the unattended and remote monitoring software suite at Los Alamos National Laboratory

    SciTech Connect (OSTI)

    Determan, John Clifford [Los Alamos National Laboratory; Longo, Joseph F [Los Alamos National Laboratory; Michel, Kelly D [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    The Unattended and Remote Monitoring (UNARM) system is a collection of specialized hardware and software used by the International Atomic Energy Agency (IAEA) to institute nuclear safeguards at many nuclear facilities around the world. The hardware consists of detectors, instruments, and networked computers for acquiring various forms of data, including but not limited to radiation data, global position coordinates, camera images, isotopic data, and operator declarations. The software provides two primary functions: the secure and reliable collection of this data from the instruments and the ability to perform an integrated review and analysis of the disparate data sources. Several years ago the team responsible for maintaining the software portion of the UNARM system began the process of formalizing its operations. These formal operations include a configuration management system, a change control board, an issue tracking system, and extensive formal testing, for both functionality and reliability. Functionality is tested with formal test cases chosen to fully represent the data types and methods of analysis that will be commonly encountered. Reliability is tested with iterative, concurrent testing where up to five analyses are executed simultaneously for thousands of cycles. Iterative concurrent testing helps ensure that there are no resource conflicts or leaks when multiple system components are in use simultaneously. The goal of this work is to provide a high quality, reliable product, commensurate with the criticality of the application. Testing results will be presented that demonstrate that this goal has been achieved and the impact of the introduction of a formal software engineering framework to the UNARM product will be presented.

  12. Monitoring underwater sensors with an amphibious robot Andrew Speers, Anna Topol, James Zacher, Robert Codd-Downey, Bart Verzijlenberg, Michael Jenkin

    E-Print Network [OSTI]

    Jenkin, Michael R. M.

    Monitoring underwater sensors with an amphibious robot Andrew Speers, Anna Topol, James Zacher, Toronto, Ontario, Canada M3J 1P3 (speers, topol, zacher, robert, bartv, jenkin)@cse.yorku.ca Abstract

  13. Worker-specific exposure monitor and method for surveillance of workers

    DOE Patents [OSTI]

    Lovejoy, Michael L. (Albuquerque, NM); Peeters, John P. (Bethesda, MD); Johnson, A. Wayne (Albuquerque, NM)

    2000-01-01T23:59:59.000Z

    A person-specific monitor that provides sensor information regarding hazards to which the person is exposed and means to geolocate the person at the time of the exposure. The monitor also includes means to communicate with a remote base station. Information from the monitor can be downloaded at the base station for long term storage and analysis. The base station can also include means to recharge the monitor.

  14. Demonstration of damage with a wireless sensor network

    SciTech Connect (OSTI)

    Tanner, Neal A.; Farrar, C. R. (Charles R.)

    2001-01-01T23:59:59.000Z

    A damage detection system was developed with commercially available wireless sensors. Statistical process control methods were used to monitor the correlation of vibration data from two accelerometers mounted across a joint. Changes in correlation were used to detect damage to the joint. All data processing was done remotely on a microprocessor integrated with the wireless sensors to allow for the transmission of a simple damaged or undamaged status for each monitored joint. Additionally, a portable demonstration structure was developed to showcase the capabilities of the damage detection system to monitor joint failure in real time.

  15. Title: A Different Approach to Sensor Networking for SHM: Remote Powering and Interrogation with Unmanned Aerial Vehicles

    E-Print Network [OSTI]

    Gupta, Rajesh

    or substations via hopping protocols. This work will present a hybrid approach to sensor array interrogation, and/or type) that attacks structural health assessments in a systematic way (Figure 1). In the last

  16. A primitive based approach for managing, deploying and monitoring in-building wireless sensor networks

    E-Print Network [OSTI]

    Dutta, Seemanta

    2012-01-01T23:59:59.000Z

    in building automation and industrial control. Computing &monitoring[17], home and industrial automation[5, 19, 23],

  17. Point-to-Point Verification of Monitored Sensors at Reynolds Army Clinic and Hospital Final Report

    E-Print Network [OSTI]

    Martinez, J.; Linenschmidt, S.; Turner, D.

    to approximately 1.0 in. H 2 O. Supply fan speeds began decreasing once their static pressure setpoints were satisfied. Two static pressure sensors did not pass verification. ESL recommended that the sensors be cleaned in the same manner as the air flow... which were identified during the verification process be given immediate attention. 1. Replace return air humidity sensors for AHU-155, AHU-245, AHU-345, and AHU-355. 2. Replace supply air humidity sensors for AHU-225 and AHU-226. 3. Clean and...

  18. Sensor technologies for civil infrastructures, Volume 2: Applications in structural health monitoring Edited by Ming Wang, Jerome Lynch and Hoon Sohn

    E-Print Network [OSTI]

    Stanford University

    1 Introduction Structural health monitoring (SHM) systems are being deployed to collect measurements health monitoring, but also for life-cycle assessment and management of the structure and the systemSensor technologies for civil infrastructures, Volume 2: Applications in structural health

  19. Efficient Electromechanical (E/M) Impedance Measuring Method for Active Sensor Structural Health Monitoring

    E-Print Network [OSTI]

    Giurgiutiu, Victor

    1 Efficient Electromechanical (E/M) Impedance Measuring Method for Active Sensor Structural Health an impedance analyzer that reads the in-situ E/M impedance of the piezoelectric wafer active sensors (PWAS an improved algorithm for efficient measurement of the E/M impedance using PWAS transducers. Instead of using

  20. Laser Spectroscopic Trace-Gas Sensor Networks for Atmospheric Monitoring Applications

    E-Print Network [OSTI]

    Zhong, Lin

    a laser based chemical sensing technology with wide-area autonomous wireless sensor networking@princeton.edu ABSTRACT Laser-based atmospheric trace-gas sensors have great potential for long-term, real such as CO2, NOx, and methane with exceptionally high specificity. Categories and Subject Descriptors C.3

  1. Modeling of Power and Energy Transduction of Embedded Piezoelectric Wafer Active Sensors for Structural Health Monitoring

    E-Print Network [OSTI]

    Giurgiutiu, Victor

    chart show the trends in the power and energy flow behavior with remarkable peaks and valleys that can1 Modeling of Power and Energy Transduction of Embedded Piezoelectric Wafer Active Sensors a systematic investigation of power and energy transduction in piezoelectric wafer active sensors (PWAS

  2. Remote reset circuit

    DOE Patents [OSTI]

    Gritzo, Russell E. (West Melbourne, FL)

    1987-01-01T23:59:59.000Z

    A remote reset circuit acts as a stand-alone monitor and controller by clocking in each character sent by a terminal to a computer and comparing it to a given reference character. When a match occurs, the remote reset circuit activates the system's hardware reset line. The remote reset circuit is hardware based centered around monostable multivibrators and is unaffected by system crashes, partial serial transmissions, or power supply transients.

  3. MEMS Materials and Temperature Sensors for Down Hole Geothermal System Monitoring

    E-Print Network [OSTI]

    Wodin-Schwartz, Sarah

    2013-01-01T23:59:59.000Z

    Geothermal EnergyThe future of geothermal energy: Impact of enhanceddown-hole monitoring of geothermal energy systems. ASME 2011

  4. MULTIFUNCTIONAL VEHICLE STRUCTURAL HEALTH MONITORING OPPORTUNITIES WITH PIEZOELECTRIC WAFER ACTIVE SENSORS

    E-Print Network [OSTI]

    Giurgiutiu, Victor

    MULTIFUNCTIONAL VEHICLE STRUCTURAL HEALTH MONITORING OPPORTUNITIES WITH PIEZOELECTRIC WAFER ACTIVE and the research needs are also discussed. INTRODUCTION Structural Health Monitoring is a major component of the remaining structural life. For the health monitoring of an actual structure, networks of embedded active

  5. Mountable eddy current sensor for in-situ remote detection of surface and sub-surface fatigue cracks

    DOE Patents [OSTI]

    Yepez, III, Esteban (Albuquerque, NM); Roach, Dennis P. (Albuquerque, NM); Rackow, Kirk A. (Albuquerque, NM); DeLong, Waylon A. (Albuquerque, NM)

    2011-09-06T23:59:59.000Z

    A wireless, integrated, mountable, portable, battery-operated, non-contact eddy current sensor that provides similar accuracy to 1970's laboratory scale equipment (e.g., a Hewlett-Packard GP4194A Impedance Analyzer) at a fraction of the size and cost.

  6. High-sensitivity optical monitoring of a micro-mechanical resonator with a quantum-limited optomechanical sensor

    E-Print Network [OSTI]

    O. Arcizet; P. -F. Cohadon; T. Briant; M. Pinard; A. Heidmann; J. -M. Mackowski; C. Michel; L. Pinard; O. Francais; L. Rousseau

    2006-05-19T23:59:59.000Z

    We experimentally demonstrate the high-sensitivity optical monitoring of a micro-mechanical resonator and its cooling by active control. Coating a low-loss mirror upon the resonator, we have built an optomechanical sensor based on a very high-finesse cavity (30000). We have measured the thermal noise of the resonator with a quantum-limited sensitivity at the 10^-19 m/rootHz level, and cooled the resonator down to 5K by a cold-damping technique. Applications of our setup range from quantum optics experiments to the experimental demonstration of the quantum ground state of a macroscopic mechanical resonator.

  7. Remote radiation dosimetry

    DOE Patents [OSTI]

    Braunlich, P.F.; Tetzlaff, W.; Hegland, J.E.; Jones, S.C.

    1991-03-12T23:59:59.000Z

    Disclosed are methods and apparatus for remotely measuring radiation levels. Such are particularly useful for measuring relatively high levels or dosages of radiation being administered in radiation therapy. They are also useful for more general radiation level measurements where remote sensing from the remaining portions of the apparatus is desirable. The apparatus uses a beam generator, such as a laser beam, to provide a stimulating beam. The stimulating beam is preferably of wavelengths shorter than 6 microns, or more advantageously less than 2 microns. The stimulating beam is used to stimulate a remote luminescent sensor mounted in a probe which emits stored luminescent energy resulting from exposure of the sensor to ionizing radiation. The stimulating beam is communicated to the remote luminescent sensor via a transmissive fiber which also preferably serves to return the emission from the luminescent sensor. The stimulating beam is advantageously split by a beam splitter to create a detector beam which is measured for power during a reading period during which the luminescent phosphor is read. The detected power is preferably used to control the beam generator to thus produce desired beam power during the reading period. The luminescent emission from the remote sensor is communicated to a suitable emission detector, preferably after filtering or other selective treatment to better isolate the luminescent emission. 8 figures.

  8. Pervasive Monitoring - An Intelligent Sensor Pod Approach for Standardised Measurement Infrastructures

    E-Print Network [OSTI]

    Resch, Bernd

    Geo-sensor networks have traditionally been built up in closed monolithic systems, thus limiting trans-domain usage of real-time measurements. This paper presents the technical infrastructure of a standardised embedded ...

  9. Solid electrolyte based sensor for monitoring the magnesium level during reclamation of aluminum scrap

    SciTech Connect (OSTI)

    Fergus, J.W.; Hui, S. [Auburn Univ., AL (United States). Materials Research and Education Center

    1996-10-01T23:59:59.000Z

    Aluminum alloy scrap often contains excess magnesium which must be removed during recycling by a process referred to as demagging. The efficiency of this process could be improved with an in-situ magnesium sensor, which could be used to optimize the process parameters to the changing magnesium content. The sensor developed in this work consists of a galvanic cell with a magnesium fluoride (MgF{sub 2}) solid electrolyte and a molten magnesium reference electrode. The voltage output of the sensor changes by about 100 mV for the change in magnesium content which occurs during the demagging process (5 wt% to 0.1 wt%) and is in excellent agreement with thermodynamic measurements using molten chloride electrolytes. This paper focuses on the effect of silicon, which is a common alloying element in aluminum alloys, on the output of an electrochemical magnesium sensor.

  10. Extending the utility of machine based height sensors to spatially monitor cotton growth 

    E-Print Network [OSTI]

    Geiger, David William

    2004-09-30T23:59:59.000Z

    The recommended procedures for implementing COTMAN; a cotton management expert system; suggest frequent crop scouting at numerous locations for each field. Machine based height sensors coupled with the ability to spatially ...

  11. EJSE Special Issue: Sensor Network on Building Monitoring: from theory to real application (2009)

    E-Print Network [OSTI]

    Halgamuge, Malka N.

    2009-01-01T23:59:59.000Z

    ) Building Automation Systems Using Wireless Sensor Networks: Radio Characteristics and Energy Efficient technical challenges in energy efficiency, network control and routing, collaborative information processing* Department of Civil & Environmental Engineering, University of Melbourne, Australia Wei Chen Department

  12. Towards a Tailored Sensor Network for Fire Emergency Monitoring in Large Buildings 

    E-Print Network [OSTI]

    Tsertou, Athanasia; Upadhyay, Rochan; McLaughlin, Stephen; Laurenson, David I

    2007-01-01T23:59:59.000Z

    Modern fire emergency systems are slowly moving from the traditional data-logging systems to a heterogeneous and dense network of wired/wireless sensors that can give a more complete view of the phenomenon. When the density ...

  13. Application of Diamond and Sapphire Sensors in the Beam Halo Monitor for FLASH

    E-Print Network [OSTI]

    , ionization chambers, a beam halo monitor (BHM) and beam position monitors (BPM) has been installed. The BHM, a BHM system and a magnetic BPM (also called "in-air" BPM) [8] operating in conjunction in order not hit the beam pipe downstream from the exit window. The BPM detects the center of gravity of the beam

  14. Monitoring the resin infusion manufacturing process under industrial environment using distributed sensors

    E-Print Network [OSTI]

    Wang, Peng; Drapier, Sylvain; Vautrin, Alain; Minni, Jean-Christophe; 10.1177/0021998311410479

    2012-01-01T23:59:59.000Z

    A novel direct approach to detect the resin flow front during the Liquid Resin Infusion process under industrial environment is proposed. To detect the resin front accurately and verify the results, which are deduced from indirect micro-thermocouples measurements, optical fiber sensors based on Fresnel reflection are utilized. It is expected that the results derived from both techniques will lead to an improvement of our understanding of the resin flow and in particular prove that micro-thermocouples can be used as sensors as routine technique under our experimental conditions. Moreover, comparisons with numerical simulations are carried out and experimental and simulated mold filling times are successfully compared.

  15. Development of Nano-crystalline Doped-Ceramic Enabled Fiber Sensors for High Temperature In-Situ Monitoring of Fossil Fuel Gases

    SciTech Connect (OSTI)

    Hai Xiao; Junhang Dong; Jerry Lin; Van Romero

    2011-12-31T23:59:59.000Z

    This is a final technical report for the first project year from July 1, 2005 to Jan 31, 2012 for DoE/NETL funded project â??DE-FC26-05NT42439: Development of Nanocrystalline Doped-Ceramic Enabled Fiber Sensors for High Temperature In-Situ Monitoring of Fossil Fuel Gases.â?ť This report summarizes the technical progresses and achievements towards the development of novel nanocrystalline doped ceramic material-enabled optical fiber sensors for in situ and real time monitoring the gas composition of flue or hot gas streams involved in fossil-fuel based power generation and hydrogen production.

  16. On the Modeling of Piezoelectric Wafer Active Sensor Impedance Analysis for Structural Health Monitoring

    E-Print Network [OSTI]

    Giurgiutiu, Victor

    damage assessment, and are considered as a new non-destructive evaluation method. The in-situ impedance of experimental results obtained from previous work. The real part of the measured PWAS impedance presents twoOn the Modeling of Piezoelectric Wafer Active Sensor Impedance Analysis for Structural Health

  17. Pictorial Descriptions of Traffic Sensor Deployments in Honolulu RTMS installation to monitor the out-bound

    E-Print Network [OSTI]

    Prevedouros, Panos D.

    truth counts (bottom right). Two batteries in parallel for the RTMS and one for the SAS were housed and Transportation Laboratory. #12;2 ORADS portable laser sensor installed parallel to the travel lanes along out inside the generator housing. Also shown in the picture above are the memory units for the RTMS

  18. Dissolved oxygen and pH monitoring within cell culture media using a hydrogel microarray sensor

    E-Print Network [OSTI]

    Lee, Seung Joon

    2009-05-15T23:59:59.000Z

    , reversibility, and temporal/spatial uniformity) and the detection system (temporal/spatial stability for the light source and the detector). The detection system and the sensor were tested with a buffer solution and cell culture media off-line. The standard...

  19. Abstract --Wearable sensors enable long-term continuous physiological monitoring, which is important for the treatment

    E-Print Network [OSTI]

    , telemedicine, mobile health, low-cost health care. I. INTRODUCTION AND MOTIVATION HE definition of health care earthquakes around the world, as well as ongoing wars, demonstrate the existing need for better low-cost that Wearable Sensors: Opportunities and Challenges for Low-Cost Health Care Richard R. Fletcher, Member, IEEE

  20. Comparison of median frequency between traditional and functional sensor placements during activity monitoring

    E-Print Network [OSTI]

    Graham, Selina

    Long-term monitoring is of great clinical relevance. Accelerometers are often used to provide information about activities of daily living. The median frequency (f[subscript m]) of acceleration has recently been suggested ...

  1. Towards and embeddable structural health monitoring sensor : design and optimization of MEMS piezoelectric vibration energy harvesters

    E-Print Network [OSTI]

    Mracek, Anna Marie

    2006-01-01T23:59:59.000Z

    Wireless structural health monitoring (SHM) has gained considerable interest as a potential method of reducing aircraft maintenance costs while increasing safety. Distributed power supplies for the sensing nodes are needed ...

  2. Real time perfusion and oxygenation monitoring in an implantable optical sensor

    E-Print Network [OSTI]

    Subramanian, Hariharan

    2006-04-12T23:59:59.000Z

    in operating rooms. In the late 1970s Scott Wilbur of the Biox corporation designed an ear sensor that used light emitting diode and solid state photodetectors to develop a clinically accepted pulse oximeter. The fiberoptic cables of previous ear oximeters.... Traditional oximeters use two light emitting diodes that emit light at 660nm (red) and 940nm (infrared) wavelengths. At these wavelengths both oxyhemoglobin and reduced hemoglobin have different absorption spectra (Fig. 1). The ratio of absorbances...

  3. Real time perfusion and oxygenation monitoring in an implantable optical sensor 

    E-Print Network [OSTI]

    Subramanian, Hariharan

    2006-04-12T23:59:59.000Z

    in operating rooms. In the late 1970s Scott Wilbur of the Biox corporation designed an ear sensor that used light emitting diode and solid state photodetectors to develop a clinically accepted pulse oximeter. The fiberoptic cables of previous ear oximeters.... Traditional oximeters use two light emitting diodes that emit light at 660nm (red) and 940nm (infrared) wavelengths. At these wavelengths both oxyhemoglobin and reduced hemoglobin have different absorption spectra (Fig. 1). The ratio of absorbances...

  4. The CitiSense Air Quality Monitoring Mobile Sensor Node Piero Zappi, Elizabeth Bales, Jing Hong Park, William Griswold and Tajana Simuni Rosing

    E-Print Network [OSTI]

    Simunic, Tajana

    conditions than the national ambient air quality standard [1]. Current air pollutant measurement networks. For example, The San Diego Air Pollution Control District (SDAPCD) maintains only five air pollutant samplingThe CitiSense Air Quality Monitoring Mobile Sensor Node Piero Zappi, Elizabeth Bales, Jing Hong

  5. Redundant Sensor Calibration and Estimation for Monitoring and Control of Nuclear Power Plants Xin Jin, Asok Ray and Robert M. Edwards

    E-Print Network [OSTI]

    Ray, Asok

    Redundant Sensor Calibration and Estimation for Monitoring and Control of Nuclear Power Plants Xin@engr.psu.edu INTRODUCTION Performance, reliability and safety of nuclear power plants depend upon validity and accuracy are installed with redundancy in nuclear power plants. Redundancy can be classified into two groups: direct

  6. CitySee: Urban CO2 Monitoring with Sensors Xufei Mao, Xin Miao, Yuan He, Tong Zhu, Jiliang Wang, Wei Dong, Xiang-Yang Li, and Yunhao Liu

    E-Print Network [OSTI]

    Liu, Yunhao

    and specialists all over the world. One of the main causes deteriorating global climate is the over- emission restrict) the emission of CO2 in order to slow down the steps of Global Warming. Since arguably more than monitoring, relay nodes placement, wire- less sensor networks. I. INTRODUCTION With the worsening of Global

  7. Renewable-reagent electrochemical sensor

    DOE Patents [OSTI]

    Wang, J.; Olsen, K.B.

    1999-08-24T23:59:59.000Z

    A new electrochemical probe(s) design allowing for continuous (renewable) reagent delivery is described. The probe comprises an integrated membrane sampling/electrochemical sensor that prevents interferences from surface-active materials and greatly extends the linear range. The probe(s) is useful for remote or laboratory-based monitoring in connection with microdialysis sampling and electrochemical measurements of metals and organic compounds that are not readily detected in the absence of reacting with the compound. Also disclosed is a method of using the probe(s). 19 figs.

  8. Renewable-reagent electrochemical sensor

    DOE Patents [OSTI]

    Wang, Joseph (Las Cruces, NM); Olsen, Khris B. (Richland, WA)

    1999-01-01T23:59:59.000Z

    A new electrochemical probe(s) design allowing for continuous (renewable) reagent delivery. The probe comprises an integrated membrane-sampling/electrochemical sensor that prevents interferences from surface-active materials and greatly extends the linear range. The probe(s) is useful for remote or laboratory-based monitoring in connection with microdialysis sampling and electrochemical measurements of metals and organic compounds that are not readily detected in the absence of reacting with the compound. Also disclosed is a method of using the probe(s).

  9. New technologies for item monitoring

    SciTech Connect (OSTI)

    Abbott, J.A. [EG & G Energy Measurements, Albuquerque, NM (United States); Waddoups, I.G. [Sandia National Labs., Albuquerque, NM (United States)

    1993-12-01T23:59:59.000Z

    This report responds to the Department of Energy`s request that Sandia National Laboratories compare existing technologies against several advanced technologies as they apply to DOE needs to monitor the movement of material, weapons, or personnel for safety and security programs. The authors describe several material control systems, discuss their technologies, suggest possible applications, discuss assets and limitations, and project costs for each system. The following systems are described: WATCH system (Wireless Alarm Transmission of Container Handling); Tag system (an electrostatic proximity sensor); PANTRAK system (Personnel And Material Tracking); VRIS (Vault Remote Inventory System); VSIS (Vault Safety and Inventory System); AIMS (Authenticated Item Monitoring System); EIVS (Experimental Inventory Verification System); Metrox system (canister monitoring system); TCATS (Target Cueing And Tracking System); LGVSS (Light Grid Vault Surveillance System); CSS (Container Safeguards System); SAMMS (Security Alarm and Material Monitoring System); FOIDS (Fiber Optic Intelligence & Detection System); GRADS (Graded Radiation Detection System); and PINPAL (Physical Inventory Pallet).

  10. Monitoring the resin infusion manufacturing process under industrial environment using distributed sensors

    E-Print Network [OSTI]

    Boyer, Edmond

    1 Monitoring the resin infusion manufacturing process under industrial environment using the Liquid Resin Infusion process under industrial environment is proposed. To detect the resin front; Liquid Resin Infusion. #12;2 1. Introduction Recently, Liquid Composite Molding (LCM) processes have been

  11. Short-range wireless sensor networks for high density seismic monitoring

    E-Print Network [OSTI]

    Spagnolini, Umberto

    new oil and gas reservoir. The envisioned production peak of current oil and gas reservoirs is pushing for sub-surface diagnostic (for small earthquake monitoring) and exploration (for new oil and gas Receivers time Delivery time Source Receivers Shot Gas/Oil/Water Gas/Oil/Water Dip-slip fault Active seismic

  12. An Autonomous Landslide Monitoring System based on Wireless Sensor K. Georgieva1

    E-Print Network [OSTI]

    Stanford University

    . Smarsly2 , M. König1 and K. H. Law2 1 Department of Civil and Environmental Engineering, Ruhr; email: {smarsly,law}@stanford.edu ABSTRACT Landslides cause significant damages to civil infrastructure of the monitoring system. INTRODUCTION Landslides are gravitational movements of soil or rock down slopes that can

  13. Continuous Plume Monitoring Using Wireless Sensors: Proof of Concept in Intermediate Scale Tank

    E-Print Network [OSTI]

    Han, Qi "Chee"

    managers and planners. Groundwater monitoring is an important component in the design of strategies is used to build and calibrate groundwater flow and transport models to pre- dict plume behavior resulting from the spatial vari- ability of soil properties cannot be fully characterized using only

  14. Wireless sensor network survey Jennifer Yick, Biswanath Mukherjee, Dipak Ghosal *

    E-Print Network [OSTI]

    Ramaswamy, Lakshmish

    important applications such as remote environmen- tal monitoring and target tracking. This has been enabled

  15. Fiber optic spectroscopic digital imaging sensor and method for flame properties monitoring

    DOE Patents [OSTI]

    Zelepouga, Serguei A. (Hoffman Estates, IL); Rue, David M. (Chicago, IL); Saveliev, Alexei V. (Chicago, IL)

    2011-03-15T23:59:59.000Z

    A system for real-time monitoring of flame properties in combustors and gasifiers which includes an imaging fiber optic bundle having a light receiving end and a light output end and a spectroscopic imaging system operably connected with the light output end of the imaging fiber optic bundle. Focusing of the light received by the light receiving end of the imaging fiber optic bundle by a wall disposed between the light receiving end of the fiber optic bundle and a light source, which wall forms a pinhole opening aligned with the light receiving end.

  16. Remote Monitoring and Tracking of UF6 Cylinders Using Long-Range Passive Ultra-wideband (UWB) RFID Tags

    SciTech Connect (OSTI)

    Nekoogar, F; Dowla, F

    2007-06-06T23:59:59.000Z

    An IAEA Technical Meeting on Techniques for IAEA Verification of Enrichment Activities identified 'smart tags' as a technology that should be assessed for tracking and locating UF6 cylinders. Although there is vast commercial industry working on RFID systems, the vulnerabilities of commercial products are only beginning to emerge. Most of the commercially off-the-shelf (COTS) RFID systems operate in very narrow frequency bands, making them vulnerable to detection, jamming and tampering and also presenting difficulties when used around metals (i.e. UF6 cylinders). Commercial passive RFID tags have short range, while active RFID tags that provide long ranges have limited lifetimes. There are also some concerns with the introduction of strong (narrowband) radio frequency signals around radioactive and nuclear materials. Considering the shortcomings of commercial RFID systems, in their current form, they do not offer a promising solution for continuous monitoring and tracking of UF6 cylinders. In this paper, we identify the key challenges faced by commercial RFID systems for monitoring UF6 cylinders, and introduce an ultra-wideband approach for tag/reader communications that addresses most of the identified challenges for IAEA safeguards applications.

  17. Application of Tritium Remote Control and Monitoring System (TRECAMS) to TFTR`s tritium inventory management program

    SciTech Connect (OSTI)

    Schobert, G.; Bashore, D.; Dong, J.; Diesso, M.; Mika, R. [Princeton Plasma Physics Lab., NJ (United States)

    1995-12-31T23:59:59.000Z

    TFTR has a stringent program to manage and account for its tritium inventory. In support of this a tritium inventory accounting capability has been implemented on TRECAMS. This was an ideal approach because TRECAMS is a high reliability system that monitors the necessary parameters, i.e., temperatures, pressures, valve positions, etc., to track the movement of tritium. It also has a powerful set of utilities which support such an application. This paper describes the application of TRECAMS to monitor the transfer of tritium between the Uranium Beds (UBEDs), the Tritium Gas Delivery Manifold (TGDM), 14 Tritium Use Point holding volumes, and the TFTR torus. Real time data is presented to the TFTR operators using graphical displays and trends. An event driven program automatically collects the data before and after tritium transfers, calculates differences and sums, tabulates the data and provides printed reports. The reports include summaries of tritium deliveries, bleedback operations, injections, a daily summary of delivery/bleedback activities, and a daily summary of injection activities. All reference data is archived and can be reproduced in a plotted or tabular format. This data can be displayed or printed by the TFTR Shift Supervisor`s VAX workstation or by anyone with an account on the laboratory`s VAX cluster.

  18. Implant for in-vivo parameter monitoring, processing and transmitting

    DOE Patents [OSTI]

    Ericson, Milton N. (Knoxville, TN); McKnight, Timothy E. (Greenback, TN); Smith, Stephen F. (London, TN); Hylton, James O. (Clinton, TN)

    2009-11-24T23:59:59.000Z

    The present invention relates to a completely implantable intracranial pressure monitor, which can couple to existing fluid shunting systems as well as other internal monitoring probes. The implant sensor produces an analog data signal which is then converted electronically to a digital pulse by generation of a spreading code signal and then transmitted to a location outside the patient by a radio-frequency transmitter to an external receiver. The implanted device can receive power from an internal source as well as an inductive external source. Remote control of the implant is also provided by a control receiver which passes commands from an external source to the implant system logic. Alarm parameters can be programmed into the device which are capable of producing an audible or visual alarm signal. The utility of the monitor can be greatly expanded by using multiple pressure sensors simultaneously or by combining sensors of various physiological types.

  19. Monitoring

    DOE Patents [OSTI]

    Orr, Christopher Henry (Calderbridge, GB); Luff, Craig Janson (Calderbridge, GB); Dockray, Thomas (Calderbridge, GB); Macarthur, Duncan Whittemore (Los Alamos, NM)

    2004-11-23T23:59:59.000Z

    The invention provides apparatus and methods which facilitate movement of an instrument relative to an item or location being monitored and/or the item or location relative to the instrument, whilst successfully excluding extraneous ions from the detection location. Thus, ions generated by emissions from the item or location can successfully be monitored during movement. The technique employs sealing to exclude such ions, for instance, through an electro-field which attracts and discharges the ions prior to their entering the detecting location and/or using a magnetic field configured to repel the ions away from the detecting location.

  20. Transmission Line Security Monitor: Final Report

    SciTech Connect (OSTI)

    John Svoboda

    2011-04-01T23:59:59.000Z

    The Electric Power Transmission Line Security Monitor System Operational Test is a project funded by the Technical Support Working Group (TSWG). TSWG operates under the Combating Terrorism Technical Support Office that functions under the Department of Defense. The Transmission Line Security Monitor System is based on technology developed by Idaho National Laboratory. The technology provides a means for real-time monitoring of physical threats and/or damage to electrical transmission line towers and conductors as well as providing operational parameters to transmission line operators to optimize transmission line operation. The end use is for monitoring long stretches of transmission lines that deliver electrical power from remote generating stations to cities and industry. These transmission lines are generally located in remote transmission line corridors where security infrastructure may not exist. Security and operational sensors in the sensor platform on the conductors take power from the transmission line and relay security and operational information to operations personnel hundreds of miles away without relying on existing infrastructure. Initiated on May 25, 2007, this project resulted in pre-production units tested in realistic operational environments during 2010. A technology licensee, Lindsey Manufacturing of Azusa California, is assisting in design, testing, and ultimately production. The platform was originally designed for a security monitoring mission, but it has been enhanced to include important operational features desired by electrical utilities.

  1. Real-time combustion control and diagnostics sensor-pressure oscillation monitor

    DOE Patents [OSTI]

    Chorpening, Benjamin T. (Morgantown, WV); Thornton, Jimmy (Morgantown, WV); Huckaby, E. David (Morgantown, WV); Richards, George A. (Morgantown, WV)

    2009-07-14T23:59:59.000Z

    An apparatus and method for monitoring and controlling the combustion process in a combustion system to determine the amplitude and/or frequencies of dynamic pressure oscillations during combustion. An electrode in communication with the combustion system senses hydrocarbon ions and/or electrons produced by the combustion process and calibration apparatus calibrates the relationship between the standard deviation of the current in the electrode and the amplitudes of the dynamic pressure oscillations by applying a substantially constant voltage between the electrode and ground resulting in a current in the electrode and by varying one or more of (1) the flow rate of the fuel, (2) the flow rate of the oxidant, (3) the equivalence ratio, (4) the acoustic tuning of the combustion system, and (5) the fuel distribution in the combustion chamber such that the amplitudes of the dynamic pressure oscillations in the combustion chamber are calculated as a function of the standard deviation of the electrode current. Thereafter, the supply of fuel and/or oxidant is varied to modify the dynamic pressure oscillations.

  2. Sensors for monitoring waste glass quality and method of using the same

    DOE Patents [OSTI]

    Bickford, D.F.

    1994-03-15T23:59:59.000Z

    A set of three electrical probes is described for monitoring alkali and oxygen activity of a glass melt. On-line, real time measurements of the potential difference among the probes when they are placed in electrical contact with the melt yield the activity information and can be used to adjust the composition of the melt in order to produce higher quality glass. The first two probes each has a reference gas and a reference electrolyte and a pair of wires in electrical connection with each other in the reference gas but having one of the wires extending further into the reference electrolyte. The reference gases both include a known concentration of oxygen. The third electrode has a pair of wires extending through an otherwise solid body to join electrically just past the body but having one of the wires extend past this junction. Measuring the potential difference between wires of the first and second probes provides the alkali activity; measurement of the potential difference between wires of the second and third probes provides the oxygen activity of the melt. 1 figure.

  3. JLab Guest Lecturer Discusses Hurricane Hunting - By Remote Control...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    boundary layer and will provide invaluable ground truth for satellite and aircraft remote sensor measurements. Analyses from these two UAS tropical cyclone missions will be...

  4. Method for remote detection of trace contaminants

    DOE Patents [OSTI]

    Simonson, Robert J.; Hance, Bradley G.

    2003-09-09T23:59:59.000Z

    A method for remote detection of trace contaminants in a target area comprises applying sensor particles that preconcentrate the trace contaminant to the target area and detecting the contaminant-sensitive fluorescence from the sensor particles. The sensor particles can have contaminant-sensitive and contaminant-insensitive fluorescent compounds to enable the determination of the amount of trace contaminant present in the target are by relative comparison of the emission of the fluorescent compounds by a local or remote fluorescence detector. The method can be used to remotely detect buried minefields.

  5. Novel biosensors for environmental monitoring of phenolic compounds

    SciTech Connect (OSTI)

    Chen, O.; Wang, J. [New Mexico State Univ., Las Cruces, NM (United States)

    1995-12-01T23:59:59.000Z

    This presentation will describe new strategies for amperometric biosensing of phenolic compounds. The class enzyme tyrosinase is employed in connection with these biosensing schemes. The enzyme can tolerate the high temperature of screen-printing/drying processes used for fabricating disposable sensor strips. In addition to single-use electrodes, we will describe the characteristic of a remote enzyme electrode for field monitoring of phenolic compounds. Finally, a novel bioamplification scheme for enhancing the sensitivity of phenol biosensing will be reported.

  6. Development of Fiber Bragg Grating Strain, Thermal, and Magnetic Sensors for Smart Structure Applications

    E-Print Network [OSTI]

    Emmons, Michael

    2012-01-01T23:59:59.000Z

    Grating Sensors,” Structural Health Monitoring, vol. 2, no.sensor arrays for structural health monitoring of filamentin the field of structural health monitoring by measuring

  7. Well casing-based geophysical sensor apparatus, system and method

    DOE Patents [OSTI]

    Daily, William D. (Livermore, CA)

    2010-03-09T23:59:59.000Z

    A geophysical sensor apparatus, system, and method for use in, for example, oil well operations, and in particular using a network of sensors emplaced along and outside oil well casings to monitor critical parameters in an oil reservoir and provide geophysical data remote from the wells. Centralizers are affixed to the well casings and the sensors are located in the protective spheres afforded by the centralizers to keep from being damaged during casing emplacement. In this manner, geophysical data may be detected of a sub-surface volume, e.g. an oil reservoir, and transmitted for analysis. Preferably, data from multiple sensor types, such as ERT and seismic data are combined to provide real time knowledge of the reservoir and processes such as primary and secondary oil recovery.

  8. SNL/VNIIEF Storage Monitoring Collaboration

    SciTech Connect (OSTI)

    Barkanov, Boris P.; Bartberger, Jack C.; Blagin, Sergei V.; Croessmann, C. Dennis; Gruda, Jeffrey D.; Lupsha, Vitali A.; Moroskin, Dimitri V.; Nilsen, Curt A.

    1999-07-12T23:59:59.000Z

    Sandia National Laboratories (SNL) and the Russian Federal Nuclear Center-All Russian Research Institute for Experimental Physics (VNIIEF)(also know as Arzamas-16) are collaborating on ways to assure the highest standards on safety, security, and international accountability of fissile material. This includes systems used to reduce the need for human access to fissile material, reduce radiation exposure, and provide prompt safety-related information, and provide continuous international accountability information while reducing the need for intrusive, on-site visits. This paper will report on the ongoing SNL/VNIIEF efforts to develop technologies and monitoring systems to meet these goals. Specific topics covered will include: the Smart Bolt tag/seal development, development and testing of electronic sensor platforms (U.S. T-1 ESP and VNIIEF Radio Tag) for monitoring and transportation applications, the ''Magazine-to-Magazine'' remote monitoring system field test, and the ''Facility-to-Facility'' storage monitoring system field trial.

  9. Evaluation of infrasound sensors

    SciTech Connect (OSTI)

    Kromer, R.P.; McDonald, T.S.

    1998-08-01T23:59:59.000Z

    Sandia is evaluating the performance of various infrasound sensors that could be used as part of the International Monitoring Systems (IMS). Specifications for infrasound stations are outlined in CTBT/PC/II/1/Add.2. This document specifies minimum requirements for sensor, digitizer and system. The infrasound sensors evaluation task has the following objectives: provide an overview of the sensors presently in use; evaluate these sensors with respect to the requirements of the IMS.

  10. Design of Wireless Sensor Units with Embedded Statistical Time-Series Damage Detection Algorithms for Structural Health Monitoring

    E-Print Network [OSTI]

    Stanford University

    A low-cost wireless sensing unit is designed and fabricated for deployment in a structural monitoring progresses towards performance-based design principles, structural monitoring systems can provide extensive

  11. Remote cardiac monitoring using radar

    E-Print Network [OSTI]

    Burnham, Jonathan S

    2009-01-01T23:59:59.000Z

    Recording a patient's vital signs without physical contact is a challenging research problem with applications in medicine, search and rescue, and security. In order to study this problem, an ultra wide band (UWB) pulse ...

  12. Large Monitoring Systems: Data Analysis, Design and Deployment

    E-Print Network [OSTI]

    Rajagopal, Ram

    2009-01-01T23:59:59.000Z

    groups: intrusive and non-intrusive. Intrusive sensors arefor traffic monitoring. Non-intrusive sensors require lessones. An example of a non-intrusive sensor is a digital

  13. Oscillometric continuous blood pressure sensing for wearable health monitoring system

    E-Print Network [OSTI]

    Gelao, Gennaro; Passaro, Vittorio M N; Perri, Anna Gina

    2015-01-01T23:59:59.000Z

    In this paper we present an acquisition chain for the measurement of blood arterial pressure based on the oscillometric method. This method does not suffer from any limitation as the well-known auscultatory method and it is suited for wearable health monitoring systems. The device uses a pressure sensor whose signal is filtered, digitalized and analyzed by a microcontroller. Local analysis allows the evaluation of the systolic and diastolic pressure values which can be used for local alarms, data collection and remote monitoring.

  14. Remote Sensing Applications for Sustainable Aquaculture in Africa

    E-Print Network [OSTI]

    Jiang, Wen

    Remote Sensing Applications for Sustainable Aquaculture in Africa Joseph E. Quansah1 , Gilbert L of the science with respect to remote sensing applications for aquaculture, including site location, aquaculture for multi-sensor remote sensing deployment to support sustainable fish production in these environments

  15. Implantable device for in-vivo intracranial and cerebrospinal fluid pressure monitoring

    DOE Patents [OSTI]

    Ericson, Milton N. (Knoxville, TN); McKnight, Timothy E. (Greenback, TN); Smith, Stephen F. (London, TN); Hylton, James O. (Clinton, TN)

    2003-01-01T23:59:59.000Z

    The present invention relates to a completely implantable intracranial pressure monitor, which can couple to existing fluid shunting systems as well as other internal monitoring probes. The implant sensor produces an analog data signal which is then converted electronically to a digital pulse by generation of a spreading code signal and then transmitted to a location outside the patient by a radio-frequency transmitter to an external receiver. The implanted device can receive power from an internal source as well as an inductive external source. Remote control of the implant is also provided by a control receiver which passes commands from an external source to the implant system logic. Alarm parameters can be programmed into the device which are capable of producing an audible or visual alarm signal. The utility of the monitor can be greatly expanded by using multiple pressure sensors simultaneously or by combining sensors of various physiological types.

  16. Remote Chemical Sensing Using Quantum Cascade Lasers

    SciTech Connect (OSTI)

    Harper, Warren W.; Strasburg, Jana D.; Aker, Pam M.; Schultz, John F.

    2004-01-20T23:59:59.000Z

    Research done by the IR sensors team at PNNL is focused on developing advanced spectroscopic methods for detecting signatures of nuclear, chemical, biological and explosives weapons or weapons production. The sensors we develop fall into two categories: remote sensors that can be operated at distances ranging from 150 m to 10 km, and point sensors that are used for in-situ inspection and detection. FY03 has seen an explosion in FM DIAL progress with the net result being solid confirmation that FM DIAL is a technique capable of remote chemical monitoring in a wide variety of venues. For example, FM DIAL was used to detect a small plume of hydrogen sulfide, a candidate CW agent, released in the desert environment of the Hanford 200 Area site. These experiments were conducted over a range of physical conditions including outside temperatures ranging from 70 F to 105 F and turbulence conditions ranging from quiescent to chaotic. We are now rapidly developing the information needed to design prototype FM DIAL systems that are optimized for specific applications that include scenarios such as fixed position stand-off detection and mobile UAV mounted remote monitoring. Just as an example, in FY04 we will use FM DIAL to detect both in-facility and outdoor release of enriched UF6. The rapid progress in FM DIAL research made in FY03 is attributed to several advances. First, final construction of a custom-designed trailer allowed the instrument to be housed in a mobile temperature-controlled environment. This allowed the experiment to be transported to several locations so that data could be collected under a range of physical conditions. This has led to a better understanding of a variety of experimental noise sources. With this knowledge, we have been able to implement several changes in the way the FM DIAL data is collected and processed, with the net result being a drastic improvement in our confidence of analyte concentration measurement and an improvement i n the instrument detection limit. The range of chemicals detectable by FM DIAL has also been extended. Prior to FY03 only water and nitrous oxide (N2O) had been seen. Experiments on extending the tuning range of the quantum cascade laser (QCL) currently used in the experiments demonstrate that many more species are now accessible including H2S, C2F4H2, and CH4. We additionally demonstrated that FM DIAL measurements can be made using short wave infrared (SWIR) telecommunications lasers. While measurements made using these components are noisier because turbulence and particulate matter cause more interference in this spectral region, monitoring in this region enables larger species to be detected simply because these lasers have a greater tuning range. In addition, SWIR monitoring also allows for the detection of second-row hydride species such as HF and HCl, which are important nuclear and CWA proliferation signatures.

  17. Open Standards for Sensor Information Processing

    SciTech Connect (OSTI)

    Pouchard, Line Catherine [ORNL; Poole, Stephen W [ORNL; Lothian, Josh [ORNL

    2009-07-01T23:59:59.000Z

    This document explores sensor standards, sensor data models, and computer sensor software in order to determine the specifications and data representation best suited for analyzing and monitoring computer system health using embedded sensor data. We review IEEE 1451, OGC Sensor Model Language and Transducer Model Language (TML), lm-sensors and Intelligent Platform Management Inititative (IPMI).

  18. REFERENCE: Introduction to Remote Sensing. James B.

    E-Print Network [OSTI]

    Gilbes, Fernando

    -viewing Wide Field-of-view Sensor (SeaWiFS) Advance Very High Resolution Radiometer (AVHRR) Synthetic Temperature #12;ACTIVE REMOTE SENSING The sensor illuminates the terrain with its own energy, then records the reflected energy as it has been altered by the earth's surface. #12;SIDE-LOOKING AIRBORNE RADAR SLAR #12

  19. Energy-Efficient Target Coverage in Wireless Sensor Networks

    E-Print Network [OSTI]

    Cardei, Mihaela

    successively. Only the sensors from the current active set are responsible for monitoring all targets

  20. Medium Access Control in Wireless Sensor Kurtis Kredo II a

    E-Print Network [OSTI]

    California at Davis, University of

    monitoring or target track- ing. End users typically desire to deploy sensor nodes randomly throughout

  1. 1 INTRODUCTION Wireless sensor networks tailored for structural

    E-Print Network [OSTI]

    Lynch, Jerome P.

    1 INTRODUCTION Wireless sensor networks tailored for structural monitoring applications have grown motivated researchers to explore wireless sensor networks for structural monitoring applications. Wireless in popularity since their initial introduction in the mid-1990s. Wireless sensors have the potential

  2. Special Issue "Underwater Sensor Nodes and Underwater Sensor Networks" A special issue of Sensors (ISSN 1424-8220)

    E-Print Network [OSTI]

    Chen, Min

    aquatic environments. Marine surveillance, pollution detection and monitoring, and oceanographic data (salinity, conductivity, turbidity, pH, oxygen, temperature, depth, etc.) - Sediments and pollution sensor nodes - Acoustic sensors - Underwater sensor network architectures - Wired and wireless protocols

  3. Vapor spill pipe monitor

    DOE Patents [OSTI]

    Bianchini, G.M.; McRae, T.G.

    1983-06-23T23:59:59.000Z

    The invention is a method and apparatus for continually monitoring the composition of liquefied natural gas flowing from a spill pipe during a spill test by continually removing a sample of the LNG by means of a probe, gasifying the LNG in the probe, and sending the vaporized LNG to a remote ir gas detector for analysis. The probe comprises three spaced concentric tubes surrounded by a water jacket which communicates with a flow channel defined between the inner and middle, and middle and outer tubes. The inner tube is connected to a pump for providing suction, and the probe is positioned in the LNG flow below the spill pipe with the tip oriented partly downward so that LNG is continuously drawn into the inner tube through a small orifice. The probe is made of a high thermal conductivity metal. Hot water is flowed through the water jacket and through the flow channel between the three tubes to provide the necessary heat transfer to flash vaporize the LNG passing through the inner channel of the probe. The gasified LNG is transported through a connected hose or tubing extending from the probe to a remote ir sensor which measures the gas composition.

  4. Smart Sensor System for Structural Condition Monitoring of Wind Turbines: 30 May 2002--30 April 2006

    SciTech Connect (OSTI)

    Schulz, M. J.; Sundaresan, M. J.

    2006-08-01T23:59:59.000Z

    This report describes the efforts of the University of Cincinnati, North Carolina A&T State University, and NREL to develop a structural neural system for structural health monitoring of wind turbine blades.

  5. Remote File Access 2010

    E-Print Network [OSTI]

    University of Technology, Sydney

    Remote File Access 2010 Mac Users Guide #12;Remote File Access: MAC Users Guide 2010 2 Table Remote File Access 11 Part IV: Using Remote File Access 15 Part V: FAQ 24 #12;Remote File Access: MAC Users Guide 2010 3 1. What is Remote File Access? UTS Remote File Access service is provided to enable

  6. Remote repair appliance

    DOE Patents [OSTI]

    Heumann, F.K.; Wilkinson, J.C.; Wooding, D.R.

    1997-12-16T23:59:59.000Z

    A remote appliance for supporting a tool for performing work at a work site on a substantially circular bore of a work piece and for providing video signals of the work site to a remote monitor comprises: a base plate having an inner face and an outer face; a plurality of rollers, wherein each roller is rotatably and adjustably attached to the inner face of the base plate and positioned to roll against the bore of the work piece when the base plate is positioned against the mouth of the bore such that the appliance may be rotated about the bore in a plane substantially parallel to the base plate; a tool holding means for supporting the tool, the tool holding means being adjustably attached to the outer face of the base plate such that the working end of the tool is positioned on the inner face side of the base plate; a camera for providing video signals of the work site to the remote monitor; and a camera holding means for supporting the camera on the inner face side of the base plate, the camera holding means being adjustably attached to the outer face of the base plate. In a preferred embodiment, roller guards are provided to protect the rollers from debris and a bore guard is provided to protect the bore from wear by the rollers and damage from debris. 5 figs.

  7. Remote repair appliance

    DOE Patents [OSTI]

    Heumann, Frederick K. (Ballston Spa, NY); Wilkinson, Jay C. (Ballston Spa, NY); Wooding, David R. (Saratoga Springs, NY)

    1997-01-01T23:59:59.000Z

    A remote appliance for supporting a tool for performing work at a worksite on a substantially circular bore of a workpiece and for providing video signals of the worksite to a remote monitor comprising: a baseplate having an inner face and an outer face; a plurality of rollers, wherein each roller is rotatably and adjustably attached to the inner face of the baseplate and positioned to roll against the bore of the workpiece when the baseplate is positioned against the mouth of the bore such that the appliance may be rotated about the bore in a plane substantially parallel to the baseplate; a tool holding means for supporting the tool, the tool holding means being adjustably attached to the outer face of the baseplate such that the working end of the tool is positioned on the inner face side of the baseplate; a camera for providing video signals of the worksite to the remote monitor; and a camera holding means for supporting the camera on the inner face side of the baseplate, the camera holding means being adjustably attached to the outer face of the baseplate. In a preferred embodiment, roller guards are provided to protect the rollers from debris and a bore guard is provided to protect the bore from wear by the rollers and damage from debris.

  8. In-situ, Real-Time Monitoring of Mechanical and Chemical Structure Changes in a V2O5 Battery Electrode Using a MEMS Optical Sensor

    SciTech Connect (OSTI)

    Jung, H. [University of Maryland; Gerasopoulos, K. [University of Maryland; Gnerlich, Markus [University of Maryland; Talin, A. Alec [Sandia National Laboratories; Ghodssi, Reza [University of Maryland

    2014-06-01T23:59:59.000Z

    This work presents the first demonstration of a MEMS optical sensor for in-situ, real-time monitoring of both mechanical and chemical structure evolutions in a V2O5 lithium-ion battery (LIB) cathode during battery operation. A reflective membrane forms one side of a Fabry-Perot (FP) interferometer, while the other side is coated with V2O5 and exposed to electrolyte in a half-cell LIB. Using one microscope and two laser sources, both the induced membrane deflection and the corresponding Raman intensity changes are observed during lithium cycling. Results are in good agreement with the expected mechanical behavior and disorder change of the V2O5 layers, highlighting the significant potential of MEMS as enabling tools for advanced scientific investigations.

  9. Mini-lidar sensor for the remote stand-off sensing of chemical/biological substances and method for sensing same

    DOE Patents [OSTI]

    Ray, Mark D.; Sedlacek, Arthur J.

    2003-08-19T23:59:59.000Z

    A method and apparatus for remote, stand-off, and high efficiency spectroscopic detection of biological and chemical substances. The apparatus including an optical beam transmitter which transmits a beam having an axis of transmission to a target, the beam comprising at least a laser emission. An optical detector having an optical detection path to the target is provided for gathering optical information. The optical detection path has an axis of optical detection. A beam alignment device fixes the transmitter proximal to the detector and directs the beam to the target along the optical detection path such that the axis of transmission is within the optical detection path. Optical information gathered by the optical detector is analyzed by an analyzer which is operatively connected to the detector.

  10. Preliminary Call for Papers SNA-2011 The Third International Symposium on Sensor Networks and Applications

    E-Print Network [OSTI]

    Hu, Fei

    -organization Congestion control and traffic models Mobile sensor and actor networks Underwater/acoustic sensor networks Pollution /air quality monitoring Building automation / visitors' guiding system Plant / farm monitoring

  11. Reliable Real-time Clinical Monitoring Using Sensor Network Technology Octav Chipara, Christopher Brooks, Sangeeta Bhattacharya, Chenyang Lu,

    E-Print Network [OSTI]

    Lu, Chenyang

    - tients. We propose a monitoring system with two types of nodes: patient nodes equipped with wireless developed the Dynamic Relay Association Protocol (DRAP), an effective mechanism for discovering the right of stay in hospitals. The prevalence of clinical deterioration resulting in cardiopulmonary or respiratory

  12. Remote Sensing of Western-Caribbean Coral Communities

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    Remote Sensing of Western-Caribbean Coral Communities Introduction: Despite the fact that coral. Remote sensing has been suggested as a potential tool for monitoring the spatial extent, health the Spectral Reflectance of Corals In-Situ. GIScience and Remote Sensing. Maeder, J., Narumalani, S., Rundquist

  13. Capacitive chemical sensor

    DOE Patents [OSTI]

    Manginell, Ronald P; Moorman, Matthew W; Wheeler, David R

    2014-05-27T23:59:59.000Z

    A microfabricated capacitive chemical sensor can be used as an autonomous chemical sensor or as an analyte-sensitive chemical preconcentrator in a larger microanalytical system. The capacitive chemical sensor detects changes in sensing film dielectric properties, such as the dielectric constant, conductivity, or dimensionality. These changes result from the interaction of a target analyte with the sensing film. This capability provides a low-power, self-heating chemical sensor suitable for remote and unattended sensing applications. The capacitive chemical sensor also enables a smart, analyte-sensitive chemical preconcentrator. After sorption of the sample by the sensing film, the film can be rapidly heated to release the sample for further analysis. Therefore, the capacitive chemical sensor can optimize the sample collection time prior to release to enable the rapid and accurate analysis of analytes by a microanalytical system.

  14. Development of laboratory and process sensors to monitor particle size distribution of industrial slurries (including shape characterization). Final technical report

    SciTech Connect (OSTI)

    Pendse, H.P.; Goetz, P.J.; Sharma, A.; Han, W; Bliss, T.C.

    1996-10-01T23:59:59.000Z

    The overall goal of the Particle Size Distribution (PSD) sensor projects was to develop and commercialize a sensor system capable of particle analysis, in terms of size distributions, using concentrated suspensions at high solids concentrations. The early research was focused on application of ultrasonic spectroscopy of inorganic pigment slurries (e.g. titanium dioxide) commonly encountered on paper industry. During the project prototypes were tested in both academic and industrial laboratories. Work also involved successful field tests of the on-line prototype at a pigment manufacturing facility. Pen Kem continued the work at its cost beyond the initial funded period from March `92 to September `94. The first project (DE- FC05-88CE40684), which began in September 1988, culminated in a commercial laboratory instrument, Pen Kem AcoustoPhor {trademark} 8000, put on the market in June 1993. The follow-on project was aimed at investigation of shape and orientation effects on ultrasonic spectroscopy. A new cooperative agreement was awarded in September 1994 (DE-FC05-94CE40005) to develop shape characterization capabilities deemed critical by the clay industry. This follow-on project achieved following successes: A theoretical model was developed to account for the effects of size-dependent aspect ratios of spheroid particles under different orientations on ultrasound attenuation spectra of concentrated slurries. The theoretical model was confirmed by laboratory tests on kaolin slurries. An algorithm was developed to simulate evolution of particle orientation fields in simple squeezing flows.

  15. Corrosion sensor

    DOE Patents [OSTI]

    Glass, Robert S. (Livermore, CA); Clarke, Jr., Willis L. (San Ramon, CA); Ciarlo, Dino R. (Livermore, CA)

    1994-01-01T23:59:59.000Z

    A corrosion sensor array incorporating individual elements for measuring various elements and ions, such as chloride, sulfide, copper, hydrogen (pH), etc. and elements for evaluating the instantaneous corrosion properties of structural materials. The exact combination and number of elements measured or monitored would depend upon the environmental conditions and materials used which are subject to corrosive effects. Such a corrosion monitoring system embedded in or mounted on a structure exposed to the environment would serve as an early warning system for the onset of severe corrosion problems for the structure, thus providing a safety factor as well as economic factors. The sensor array is accessed to an electronics/computational system, which provides a means for data collection and analysis.

  16. Corrosion sensor

    DOE Patents [OSTI]

    Glass, R.S.; Clarke, W.L. Jr.; Ciarlo, D.R.

    1994-04-26T23:59:59.000Z

    A corrosion sensor array is described incorporating individual elements for measuring various elements and ions, such as chloride, sulfide, copper, hydrogen (pH), etc. and elements for evaluating the instantaneous corrosion properties of structural materials. The exact combination and number of elements measured or monitored would depend upon the environmental conditions and materials used which are subject to corrosive effects. Such a corrosion monitoring system embedded in or mounted on a structure exposed to the environment would serve as an early warning system for the onset of severe corrosion problems for the structure, thus providing a safety factor as well as economic factors. The sensor array is accessed to an electronics/computational system, which provides a means for data collection and analysis. 7 figures.

  17. Microfabricated fuel heating value monitoring device

    DOE Patents [OSTI]

    Robinson, Alex L. (Albuquerque, NM); Manginell, Ronald P. (Albuquerque, NM); Moorman, Matthew W. (Albuquerque, NM)

    2010-05-04T23:59:59.000Z

    A microfabricated fuel heating value monitoring device comprises a microfabricated gas chromatography column in combination with a catalytic microcalorimeter. The microcalorimeter can comprise a reference thermal conductivity sensor to provide diagnostics and surety. Using microfabrication techniques, the device can be manufactured in production quantities at a low per-unit cost. The microfabricated fuel heating value monitoring device enables continuous calorimetric determination of the heating value of natural gas with a 1 minute analysis time and 1.5 minute cycle time using air as a carrier gas. This device has applications in remote natural gas mining stations, pipeline switching and metering stations, turbine generators, and other industrial user sites. For gas pipelines, the device can improve gas quality during transfer and blending, and provide accurate financial accounting. For industrial end users, the device can provide continuous feedback of physical gas properties to improve combustion efficiency during use.

  18. Attack-Resistant Location Estimation in Sensor (Revised August 2005)

    E-Print Network [OSTI]

    Ning, Peng

    role in many sensor network applications. Not only do applications such as environment monitoring and target tracking require sensors' location information to fulfill their tasks, but several fundamental

  19. 2007 Urban Remote Sensing Joint Event Application of satellite Remote Sensing for Urban

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    2007 Urban Remote Sensing Joint Event Application of satellite Remote Sensing for Urban Risk Analysis: a case study of the 2003 extreme heat wave in Paris Bénédicte Dousset Hawaii Institute@ogs.trieste.it Abstract ­ Satellite observations are used to monitor the August 2003 heat wave in Paris

  20. Remote Method Invocation Remote Method Invocation

    E-Print Network [OSTI]

    Hao, Jin-Kao

    Remote Method Invocation Remote Method Invocation Jean-Michel Richer jean-michel.richer@univ-angers.fr http://www.info.univ-angers.fr/pub/richer M2 Informatique 2010-2011 1 / 22 #12;Remote Method Invocation Plan Plan 1 Introduction 2 RMI en d´etails 3 Exemple 4 Application 2 / 22 #12;Remote Method Invocation

  1. ADECENTRALIZED APPROACH TOWARDS AUTONOMOUS FAULT DETECTION IN WIRELESS STRUCTURAL HEALTH MONITORING SYSTEMS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ADECENTRALIZED APPROACH TOWARDS AUTONOMOUS FAULT DETECTION IN WIRELESS STRUCTURAL HEALTH MONITORING structural health monitoring (SHM) systems may reduce the monitoring quality and, if remaining undetected : Autonomous fault detection, structural health monitoring, wireless sensor networks, smart sensors, analytical

  2. Cost reduction performance enhancements of multiple site cooling water systems, enabled by remote system monitoring/control and multifaceted data management

    SciTech Connect (OSTI)

    Cook, B. [BetzDearborn Water Management Group, Horsham, PA (United States); Young, D. [BetzDearborn Water Management Group, Mississauga, Ontario (Canada); Tari, K. [Praxair, Inc., Tonawanda, New York, NY (United States)

    1998-12-31T23:59:59.000Z

    An outsourced cooling water treatment automated control and data acquisition package, has been designed, installed, and commissioned in over 70 sites in North America and offshore. The standard package consists of a controller, sensors, human-machine interface software, data acquisition and management software, communications, and reporting. Significant challenges to applying this standard package in multiple sites arose from variations in cooling system design and makeup water quality as well as operations, environmental considerations, metrics, and language. A standard approach has met these challenges and overcome effects of downsizing through significant reduction in non-value-added, manual activities. Overall system reliability has been improved by migration to best practice throughout the organizations involved and immediate proactive response to out-of-specification conditions. This paper documents the evolution of a standard cooling water automation and data management package from its inception to current practice.

  3. In Situ Decommissioning Sensor Network, Meso-Scale Test Bed - Phase 3 Fluid Injection Test Summary Report

    SciTech Connect (OSTI)

    Serrato, M. G.

    2013-09-27T23:59:59.000Z

    The DOE Office of Environmental management (DOE EM) faces the challenge of decommissioning thousands of excess nuclear facilities, many of which are highly contaminated. A number of these excess facilities are massive and robust concrete structures that are suitable for isolating the contained contamination for hundreds of years, and a permanent decommissioning end state option for these facilities is in situ decommissioning (ISD). The ISD option is feasible for a limited, but meaningfull number of DOE contaminated facilities for which there is substantial incremental environmental, safety, and cost benefits versus alternate actions to demolish and excavate the entire facility and transport the rubble to a radioactive waste landfill. A general description of an ISD project encompasses an entombed facility; in some cases limited to the blow-grade portion of a facility. However, monitoring of the ISD structures is needed to demonstrate that the building retains its structural integrity and the contaminants remain entombed within the grout stabilization matrix. The DOE EM Office of Deactivation and Decommissioning and Facility Engineering (EM-13) Program Goal is to develop a monitoring system to demonstrate long-term performance of closed nuclear facilities using the ISD approach. The Savannah River National Laboratory (SRNL) has designed and implemented the In Situ Decommissioning Sensor Network, Meso-Scale Test Bed (ISDSN-MSTB) to address the feasibility of deploying a long-term monitoring system into an ISD closed nuclear facility. The ISDSN-MSTB goal is to demonstrate the feasibility of installing and operating a remote sensor network to assess cementitious material durability, moisture-fluid flow through the cementitious material, and resulting transport potential for contaminate mobility in a decommissioned closed nuclear facility. The original ISDSN-MSTB installation and remote sensor network operation was demonstrated in FY 2011-12 at the ISDSN-MSTB test cube located at the Florida International University Applied Research Center, Miami, FL (FIU-ARC). A follow-on fluid injection test was developed to detect fluid and ion migration in a cementitious material/grouted test cube using a limited number of existing embedded sensor systems. This In Situ Decommissioning Sensor Network, Meso-Scale Test Bed (ISDSN-MSTB) - Phase 3 Fluid Injection Test Summary Report summarizes the test implementation, acquired and processed data, and results from the activated embedded sensor systems used during the fluid injection test. The ISDSN-MSTB Phase 3 Fluid Injection Test was conducted from August 27 through September 6, 2013 at the FIU-ARC ISDSN-MSTB test cube. The fluid injection test activated a portion of the existing embedded sensor systems in the ISDSN-MSTB test cube: Electrical Resistivity Tomography-Thermocouple Sensor Arrays, Advance Tensiometer Sensors, and Fiber Loop Ringdown Optical Sensors. These embedded sensor systems were activated 15 months after initial placement. All sensor systems were remotely operated and data acquisition was completed through the established Sensor Remote Access System (SRAS) hosted on the DOE D&D Knowledge Management Information Tool (D&D DKM-IT) server. The ISDN Phase 3 Fluid Injection Test successfully demonstrated the feasibility of embedding sensor systems to assess moisture-fluid flow and resulting transport potential for contaminate mobility through a cementitious material/grout monolith. The ISDSN embedded sensor systems activated for the fluid injection test highlighted the robustness of the sensor systems and the importance of configuring systems in-depth (i.e., complementary sensors and measurements) to alleviate data acquisition gaps.

  4. Handleiding Remote Desktop Service

    E-Print Network [OSTI]

    Galis, Frietson

    Handleiding Remote Desktop Service Versie: 1.3 Remote Desktop Datum: 29-08-2013 #12;2 Configureren Remote Desktop Connection 1) Type in de zoekbalk van Windows 7: "remote" of "mstsc" en start de applicatie "Remote Desktop Connection" zoals in onderstaand voorbeeld wordt getoond. 2) Selecteer "Show

  5. `On a Tracking Scheme with Probabilistic Completeness for a Distributed Sensor Network

    E-Print Network [OSTI]

    Hexmoor, Henry

    presented the results of endowing the sensor network with autonomy. Sensors monitor targets that crisscross modeled through fuzzy rules [1]. The sensor further decides if it would monitor the target by remaining

  6. Remote Access

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements Recently ApprovedReliability Technology earnsRemembering 9-11'sRemote

  7. Remote sensing of seasonal stratification dynamics in the southern Irish Sea Claire Neil a

    E-Print Network [OSTI]

    Polton, Jeff

    Remote sensing of seasonal stratification dynamics in the southern Irish Sea Claire Neil a , Alex Sea mixing Tidal front Optical remote sensing In early summer, a well-defined front forms, and data from the MODIS Aqua sensor was used to derive a five-year time series of red-waveband remote

  8. Advanced 3D Sensing and Visualization System for Unattended Monitoring

    SciTech Connect (OSTI)

    Carlson, J.J.; Little, C.Q.; Nelson, C.L.

    1999-01-01T23:59:59.000Z

    The purpose of this project was to create a reliable, 3D sensing and visualization system for unattended monitoring. The system provides benefits for several of Sandia's initiatives including nonproliferation, treaty verification, national security and critical infrastructure surety. The robust qualities of the system make it suitable for both interior and exterior monitoring applications. The 3D sensing system combines two existing sensor technologies in a new way to continuously maintain accurate 3D models of both static and dynamic components of monitored areas (e.g., portions of buildings, roads, and secured perimeters in addition to real-time estimates of the shape, location, and motion of humans and moving objects). A key strength of this system is the ability to monitor simultaneous activities on a continuous basis, such as several humans working independently within a controlled workspace, while also detecting unauthorized entry into the workspace. Data from the sensing system is used to identi~ activities or conditions that can signi~ potential surety (safety, security, and reliability) threats. The system could alert a security operator of potential threats or could be used to cue other detection, inspection or warning systems. An interactive, Web-based, 3D visualization capability was also developed using the Virtual Reality Modeling Language (VRML). The intex%ace allows remote, interactive inspection of a monitored area (via the Internet or Satellite Links) using a 3D computer model of the area that is rendered from actual sensor data.

  9. Adaptive and mobile ground sensor array.

    SciTech Connect (OSTI)

    Holzrichter, Michael Warren; O'Rourke, William T.; Zenner, Jennifer; Maish, Alexander B.

    2003-12-01T23:59:59.000Z

    The goal of this LDRD was to demonstrate the use of robotic vehicles for deploying and autonomously reconfiguring seismic and acoustic sensor arrays with high (centimeter) accuracy to obtain enhancement of our capability to locate and characterize remote targets. The capability to accurately place sensors and then retrieve and reconfigure them allows sensors to be placed in phased arrays in an initial monitoring configuration and then to be reconfigured in an array tuned to the specific frequencies and directions of the selected target. This report reviews the findings and accomplishments achieved during this three-year project. This project successfully demonstrated autonomous deployment and retrieval of a payload package with an accuracy of a few centimeters using differential global positioning system (GPS) signals. It developed an autonomous, multisensor, temporally aligned, radio-frequency communication and signal processing capability, and an array optimization algorithm, which was implemented on a digital signal processor (DSP). Additionally, the project converted the existing single-threaded, monolithic robotic vehicle control code into a multi-threaded, modular control architecture that enhances the reuse of control code in future projects.

  10. Gas sensor

    DOE Patents [OSTI]

    Schmid, Andreas K.; Mascaraque, Arantzazu; Santos, Benito; de la Figuera, Juan

    2014-09-09T23:59:59.000Z

    A gas sensor is described which incorporates a sensor stack comprising a first film layer of a ferromagnetic material, a spacer layer, and a second film layer of the ferromagnetic material. The first film layer is fabricated so that it exhibits a dependence of its magnetic anisotropy direction on the presence of a gas, That is, the orientation of the easy axis of magnetization will flip from out-of-plane to in-plane when the gas to be detected is present in sufficient concentration. By monitoring the change in resistance of the sensor stack when the orientation of the first layer's magnetization changes, and correlating that change with temperature one can determine both the identity and relative concentration of the detected gas. In one embodiment the stack sensor comprises a top ferromagnetic layer two mono layers thick of cobalt deposited upon a spacer layer of ruthenium, which in turn has a second layer of cobalt disposed on its other side, this second cobalt layer in contact with a programmable heater chip.

  11. APPLICATIONS OF CURRENT TECHNOLOGY FOR CONTINUOUS MONITORING OF SPENT FUEL

    SciTech Connect (OSTI)

    Drayer, R.

    2013-06-09T23:59:59.000Z

    Advancements in technology have opened many opportunities to improve upon the current infrastructure surrounding the nuclear fuel cycle. Embedded devices, very small sensors, and wireless technology can be applied to Security, Safety, and Nonproliferation of Spent Nuclear Fuel. Security, separate of current video monitoring systems, can be improved by integrating current wireless technology with a variety of sensors including motion detection, altimeter, accelerometer, and a tagging system. By continually monitoring these sensors, thresholds can be set to sense deviations from nominal values. Then alarms or notifications can be activated as needed. Safety can be improved in several ways. First, human exposure to ionizing radiation can be reduced by using a wireless sensor package on each spent fuel cask to monitor radiation, temperature, humidity, etc. Since the sensor data is monitored remotely operator stay-time is decreased and distance from the spent fuel increased, so the overall radiation exposure is reduced as compared to visual inspections. The second improvement is the ability to monitor continuously rather than periodically. If changes occur to the material, alarm thresholds could be set and notifications made to provide advanced notice of negative data trends. These sensor packages could also record data to be used for scientific evaluation and studies to improve transportation and storage safety. Nonproliferation can be improved for spent fuel transportation and storage by designing an integrated tag that uses current infrastructure for reporting and in an event; tracking can be accomplished using the Iridium satellite system. This technology is similar to GPS but with higher signal strength and penetration power, but lower accuracy. A sensor package can integrate all or some of the above depending on the transportation and storage requirements and regulations. A sensor package can be developed using off the shelf technology and applying it to each specific need. There are products on the market for smart meters, industrial lighting control and home automation that can be applied to the Back End Fuel Cycle. With a little integration and innovation a cost effective solution is achievable.

  12. 334 IEEE/ACM TRANSACTIONS ON NETWORKING, VOL. 15, NO. 2, APRIL 2007 Maximizing Lifetime of Sensor Surveillance Systems

    E-Print Network [OSTI]

    Jia, Xiaohua

    to be monitored. The sensors collaborate with each other to watch or monitor the targets and pass the sensed data

  13. Fiber optic geophysical sensors

    DOE Patents [OSTI]

    Homuth, E.F.

    1991-03-19T23:59:59.000Z

    A fiber optic geophysical sensor is described in which laser light is passed through a sensor interferometer in contact with a geophysical event, and a reference interferometer not in contact with the geophysical event but in the same general environment as the sensor interferometer. In one embodiment, a single tunable laser provides the laser light. In another embodiment, separate tunable lasers are used for the sensor and reference interferometers. The invention can find such uses as monitoring for earthquakes, and the weighing of objects. 2 figures.

  14. Sensor Network Demonstration for In Situ Decommissioning - 13332

    SciTech Connect (OSTI)

    Lagos, L.; Varona, J.; Awwad, A. [Applied Research Center, Florida International University, 10555 West Flagler Street, Suite 2100, Miami, FL 33174 (United States)] [Applied Research Center, Florida International University, 10555 West Flagler Street, Suite 2100, Miami, FL 33174 (United States); Rivera, J.; McGill, J. [Department of Energy - DOE, Environmental Management Office (United States)] [Department of Energy - DOE, Environmental Management Office (United States)

    2013-07-01T23:59:59.000Z

    Florida International University's (FIU's) Applied Research Center is currently supporting the Department of Energy's (DOE) Environmental Management Office of D and D and Facility Engineering program. FIU is supporting DOE's initiative to improve safety, reduce technical risks, and limit uncertainty within D and D operations by identifying technologies suitable to meet specific facility D and D requirements, assessing the readiness of those technologies for field deployment, and conducting feasibility studies and large scale demonstrations of promising technologies. During FY11, FIU collaborated with Savannah River National Laboratory in the development of an experimental test site for the demonstration of multiple sensor systems for potential use in the in situ decommissioning process. In situ decommissioning is a process in which the above ground portion of a facility is dismantled and removed, and the underground portion is filled with a cementious material such as grout. In such a scenario, the question remains on how to effectively monitor the structural health of the grout (cracking, flexing, and sinking), as well as track possible migration of contaminants within and out of the grouted monolith. The right types of sensors can aid personnel in better understanding the conditions within the entombed structure. Without sensors embedded in and around the monolith, it will be very difficult to estimate structural integrity and contaminant transport. Yet, to fully utilize the appropriate sensors and the provided data, their performance and reliability must be evaluated outside a laboratory setting. To this end, a large scale experimental setup and demonstration was conducted at FIU. In order to evaluate a large suite of sensor systems, FIU personnel designed and purchased a pre-cast concrete open-top cube, which served as a mock-up of an in situ DOE decommissioned facility. The inside of the cube measures 10 ft x 10 ft x 8 ft. In order to ensure that the individual sensors would be immobilized during the grout pouring activities, a set of nine sensor racks were designed. The 270 sensors provided by Idaho National Laboratory (INL), Mississippi State University (MSU), University of Houston (UH), and University of South Carolina (USC) were secured to these racks based on predetermined locations. Once sensor racks were installed inside the test cube, connected and debugged, approximately 32 cubic yards of special grout material was used to entomb the sensors. MSU provided and demonstrated four types of fiber loop ring-down (FLR) sensors for detection of water, temperature, cracks, and movement of fluids. INL provided and demonstrated time differenced 3D electrical resistivity tomography (ERT), advanced tensiometers for moisture content, and thermocouples for temperature measurements. University of Houston provided smart aggregate (SA) sensors, which detect crack severity and water presence. An additional UH sensor system demonstrated was a Fiber Bragg Grating (FBG) fiber optic system measuring strain, presence of water, and temperature. USC provided a system which measured acoustic emissions during cracking, as well as temperature and pH sensors. All systems were connected to a Sensor Remote Access System (SRAS) data networking and collection system designed, developed and provided by FIU. The purpose of SRAS was to collect and allow download of the raw sensor data from all the sensor system, as well as allow upload of the processed data and any analysis reports and graphs. All this information was made available to the research teams via the Deactivation and Decommissioning Knowledge Management and Information Tool (D and D KM-IT). As a current research effort, FIU is performing an energy analysis, and transferring several sensor systems to a Photovoltaic (PV) System to continuously monitor energy consumption parameters and overall power demands. Also, One final component of this research is focusing on developing an integrated data network to capture, log and analyze sensor system data in near real time from a single inte

  15. Implementing a wireless base station for a sensor network

    E-Print Network [OSTI]

    Song, Heewon, 1977-

    2004-01-01T23:59:59.000Z

    Using wireless sensor networks for monitoring infrastructure is a new trend in civil engineering. Compared with traditional ways to monitor infrastructure, wireless sensor networks are cheap, safe, and compact. However, ...

  16. Vibration detection in turbomachinery using non-contacting sensors

    E-Print Network [OSTI]

    Cohen, Eric D., M. Eng. Massachusetts Institute of Technology

    2006-01-01T23:59:59.000Z

    Recent developments have seen the introduction of multiple Eddy Current Sensors (ECS) into turbomachinery. These sensors employ an active magnetic field to monitor each blade as it passes the sensor. They generate an ...

  17. Sensors for Safety & Performance Stationary Systems

    E-Print Network [OSTI]

    for PEM Fuel Cell Vehicles · Interfacial Stability of Thin Film H2 Sensors · Sensors for Automotive Fuel Cell Systems · Micro-Machined Thin Film H2 Gas Sensors · Sensor Development for PEM Fuel Cell Systems for Fuel Cell Monitoring #12;Discussion Points Barriers ·Cost ·Application ·Lifetime ·Flexibility ·Public

  18. Sandia National Laboratories: REMOTE

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    REMOTE Sandia to Partner with MOgene Green Chemicals on ARPA-E REMOTE Project On October 2, 2013, in Energy, News, News & Events, Partnership, Research & Capabilities,...

  19. Poster Abstract: Wireless Sensor Networks for Structural Health Sukun Kim, Shamim Pakzad, David Culler, James Demmel

    E-Print Network [OSTI]

    California at Berkeley, University of

    Poster Abstract: Wireless Sensor Networks for Structural Health Monitoring Sukun Kim, Shamim Pakzad Experimentation, Reliability, Design Keywords Wireless Sensor Networks, Structural Health Monitoring, Deployment, Large-Scale 1 Introduction Structural Health Monitoring (SHM) is estimating the state of structural

  20. Distributed MIMO for wireless sensor networks 

    E-Print Network [OSTI]

    Wen, Xiaojun

    2011-11-22T23:59:59.000Z

    Over the past decade, wireless sensor networks have gained more research attention for their potential applications in healthcare, defense, environmental monitoring, etc. Due to the strict energy limitation in the sensor ...

  1. Multiple node remote messaging

    DOE Patents [OSTI]

    Blumrich, Matthias A. (Ridgefield, CT); Chen, Dong (Croton on Hudson, NY); Gara, Alan G. (Mount Kisco, NY); Giampapa, Mark E. (Irvington, NY); Heidelberger, Philip (Cortlandt Manor, NY); Ohmacht, Martin (Yorktown Heights, NY); Salapura, Valentina (Chappaqua, NY); Steinmacher-Burow, Burkhard (Esslingen, DE); Vranas, Pavlos (Danville, CA)

    2010-08-31T23:59:59.000Z

    A method for passing remote messages in a parallel computer system formed as a network of interconnected compute nodes includes that a first compute node (A) sends a single remote message to a remote second compute node (B) in order to control the remote second compute node (B) to send at least one remote message. The method includes various steps including controlling a DMA engine at first compute node (A) to prepare the single remote message to include a first message descriptor and at least one remote message descriptor for controlling the remote second compute node (B) to send at least one remote message, including putting the first message descriptor into an injection FIFO at the first compute node (A) and sending the single remote message and the at least one remote message descriptor to the second compute node (B).

  2. AUTHENTICATED SENSOR INTERFACE DEVICE FOR JOINT USE SAFEGUARDS APPLICATIONS - CONCEPTS AND CHALLENGES

    SciTech Connect (OSTI)

    Poland, R.; Drayer, R.; Wilson, J.

    2013-08-12T23:59:59.000Z

    This paper will discuss the key features of the Authenticated Sensor Interface Device that collectively provide the ability to share data among a number of parties while ensuring the authentication of data and protecting both the operator’s and the IAEA’s interests. The paper will also discuss the development of the prototype, the initial testing with an accountancy scale, and future plans and challenges to implementation into the joint use and remote monitoring applications. As nuclear fuel cycle technology becomes more prevalent throughout the world and the capacity of plants increases, limited resources of the IAEA are being stretched near a breaking point. A strategy is to increase efficiency in safeguards monitoring using “joint use” equipment that will provide the facility operator process data while also providing the IAEA key safeguards data. The data, however, must be authenticated and validated to ensure the data have not been tampered with. The Authenticated Sensor Interface Device provides the capability to share data and can be a valuable component in the IAEA’s ability to collect accountancy data from scales in Uranium conversion and enrichment plants, as well as nuclear fuel fabrication plants. Likewise, the Authenticated Sensor Interface Device can be configured to accept a diverse array of input signals, ranging from analog voltage, to current, to digital interfaces and more. These modular capabilities provide the ability to collect authenticated, joint-use, data streams from various process monitoring sensors.

  3. A Bayesian experimental design approach to structural health monitoring with application to ultrasonic guided waves

    E-Print Network [OSTI]

    Flynn, Eric Brian

    2010-01-01T23:59:59.000Z

    sensor nodes for structural health monitoring applications,”and Interrogation of Structural Health Monitoring Sensorin Guided Wave Structural Health Monitoring”. *E. Flynn, M.

  4. A Performance Comparison of Features Used in Vibration- Based Health Monitoring of a Complex Mechanism /

    E-Print Network [OSTI]

    Zsiga, Luke Mathieson

    2013-01-01T23:59:59.000Z

    approach for structural health monitoring sensor networks.Workshop on Structural Health Monitoring, 2007 13. Farrar,recognition for structural health monitoring." Workshop on

  5. Hydrocarbon sensors and materials therefor

    DOE Patents [OSTI]

    Pham, Ai Quoc (San Jose, CA); Glass, Robert S. (Livermore, CA)

    2000-01-01T23:59:59.000Z

    An electrochemical hydrocarbon sensor and materials for use in sensors. A suitable proton conducting electrolyte and catalytic materials have been found for specific application in the detection and measurement of non-methane hydrocarbons. The sensor comprises a proton conducting electrolyte sandwiched between two electrodes. At least one of the electrodes is covered with a hydrocarbon decomposition catalyst. Two different modes of operation for the hydrocarbon sensors can be used: equilibrium versus non-equilibrium measurements and differential catalytic. The sensor has particular application for on-board monitoring of automobile exhaust gases to evaluate the performance of catalytic converters. In addition, the sensor can be utilized in monitoring any process where hydrocarbons are exhausted, for instance, industrial power plants. The sensor is low cost, rugged, sensitive, simple to fabricate, miniature, and does not suffer cross sensitivities.

  6. HYDROCARBON AND SULFUR SENSORS FOR SOFC SYSTEMS

    SciTech Connect (OSTI)

    A.M. Azad; Chris Holt; Todd Lesousky; Scott Swartz

    2003-11-01T23:59:59.000Z

    The following report summarizes work conducted during the Phase I program Hydrocarbon and Sulfur Sensors for SOFC Systems under contract No. DE-FC26-02NT41576. For the SOFC application, sensors are required to monitor hydrocarbons and sulfur in order to increase the operation life of SOFC components. This report discusses the development of two such sensors, one based on thick film approach for sulfur monitoring and the second galvanic based for hydrocarbon monitoring.

  7. CFMRI Physiological Monitoring System Operator's Manual

    E-Print Network [OSTI]

    California at San Diego, University of

    and lead wires (MRI compatible) can cause patient heating or burn if not used properly. To minimize in Figure 1) · Invivo millennia® 3155MVS remote monitor (#9 in Figure 1) · BioPac System - Respiratory Belt) Turn on the Invivo 3155MVS remote monitor located in the control room. · Invivo 3155MVS should

  8. V-011: IBM Tivoli Monitoring Web Server HTTP TRACE/TRACK Support...

    Broader source: Energy.gov (indexed) [DOE]

    1: IBM Tivoli Monitoring Web Server HTTP TRACETRACK Support Lets Remote Users Obtain Potentially Sensitive Information V-011: IBM Tivoli Monitoring Web Server HTTP TRACETRACK...

  9. Journal of Materials Science, 2009. 44(6): p. 1560-1571 Whispering Gallery Mode-Based Micro-Optical Sensors for Structural Health Monitoring

    E-Print Network [OSTI]

    Gupta, Nikhil

    used in materials include piezoelectric particles, acoustic emission sensors and optical fibers. Each. Use of fiber-optic sensors is advantageous in composite materials because they can become an integral1560 Journal of Materials Science, 2009. 44(6): p. 1560-1571 Whispering Gallery Mode-Based Micro-Optical

  10. Minimally intrusive strategies for fault detection and energy monitoring

    E-Print Network [OSTI]

    Cox, Robert Williams, 1979-

    2006-01-01T23:59:59.000Z

    This thesis addresses the need for automated monitoring systems that rely on minimally intrusive sensor arrays. The monitoring techniques employed in this thesis require fewer sensors because they take a different approach ...

  11. Uncertainty Quantification Techniques for Sensor Calibration...

    Office of Scientific and Technical Information (OSTI)

    Uncertainty Quantification Techniques for Sensor Calibration Monitoring in Nuclear Power Plants Re-direct Destination: This report describes research towards the development of...

  12. Intrusion detection sensor testing tools

    SciTech Connect (OSTI)

    Hayward, D.R.

    1994-08-01T23:59:59.000Z

    Intrusion detection sensors must be frequently tested to verify that they are operational, and they must be periodically tested to verify that they are functioning at required performance levels. Concerns involving this testing can include: The significant amount of manpower required, inconsistent results due to variability in methods and personnel, exposure of personnel to hazardous environments, and difficulty in obtaining access to the areas containing some of the intrusion sensors. To address these concerns, the Department of Energy directed Sandia National Labs. to develop intrusion detection sensor testing tools. Over the past two years Sandia has developed several sensor testing tool prototypes. This paper describes the evolution of an exterior intrusion detection sensor tester and automatic data logger, and also describes various interior intrusion detection sensor test fixtures that can be remotely activated to simulate an intruder.

  13. Sensor test facilities and capabilities at the Nevada Test Site

    SciTech Connect (OSTI)

    Boyer, W.B.; Burke, L.J.; Gomez, B.J.; Livingston, L.; Nelson, D.S.; Smathers, D.C.

    1996-12-31T23:59:59.000Z

    Sandia National Laboratories has recently developed two major field test capabilities for unattended ground sensor systems at the Department of energy`s Nevada Test Site (NTS). The first capability utilizes the NTS large area, varied terrain, and intrasite communications systems for testing sensors for detecting and tracking vehicular traffic. Sensor and ground truth data can be collected at either of two secure control centers. This system also includes an automated ground truth capability that consists of differential Global Positioning Satellite (GPS) receivers on test vehicles and live TV coverage of critical road sections. Finally there is a high-speed, secure computer network link between the control centers and the Air Force`s Theater Air Command and Control Simulation Facility in Albuquerque NM. The second capability is Bunker 2-300. It is a facility for evaluating advanced sensor systems for monitoring activities in underground cut-and-cover facilities. The main part of the facility consists of an underground bunker with three large rooms for operating various types of equipment. This equipment includes simulated chemical production machinery and controlled seismic and acoustic signal sources. There has been a thorough geologic and electromagnetic characterization of the region around the bunker. Since the facility is in a remote location, it is well-isolated from seismic, acoustic, and electromagnetic interference.

  14. Conceptual design analyses for Hanford Site deployable remote spectroscopy systems

    SciTech Connect (OSTI)

    Philipp, B.L.; Reich, F.R.

    1994-09-01T23:59:59.000Z

    This document identifies potential remote, NIR spectroscopic waste surface moisture monitoring system design alternatives to be operated inside one of the Hanford Site, high level, nuclear waste storage tanks. Potential tank waste moisture data impacts from the remote NIR signal transfer through high humidity vapor space is evaluated.

  15. Transmission Line Security Monitor

    ScienceCinema (OSTI)

    None

    2013-05-28T23:59:59.000Z

    The Transmission Line Security Monitor is a multi-sensor monitor that mounts directly on high-voltage transmission lines to detect, characterize and communicate terrorist activity, human tampering and threatening conditions around support towers. For more information about INL's critical infrastructure protection research, visit http://www.facebook.com/idahonationallaboratory.

  16. Transmission Line Security Monitor

    SciTech Connect (OSTI)

    None

    2011-01-01T23:59:59.000Z

    The Transmission Line Security Monitor is a multi-sensor monitor that mounts directly on high-voltage transmission lines to detect, characterize and communicate terrorist activity, human tampering and threatening conditions around support towers. For more information about INL's critical infrastructure protection research, visit http://www.facebook.com/idahonationallaboratory.

  17. Robust Clock Synchronization Methods for Wireless Sensor Networks

    E-Print Network [OSTI]

    Lee, Jae Han

    2011-10-21T23:59:59.000Z

    Wireless sensor networks (WSNs) have received huge attention during the recent years due to their applications in a large number of areas such as environmental monitoring, health and traffic monitoring, surveillance and tracking, and monitoring...

  18. High aspect ratio, remote controlled pumping assembly

    DOE Patents [OSTI]

    Brown, Steve B. (Livermore, CA); Milanovich, Fred P. (Lafayette, CA)

    1995-01-01T23:59:59.000Z

    A miniature dual syringe-type pump assembly which has a high aspect ratio and which is remotely controlled, for use such as in a small diameter penetrometer cone or well packer used in water contamination applications. The pump assembly may be used to supply and remove a reagent to a water contamination sensor, for example, and includes a motor, gearhead and motor encoder assembly for turning a drive screw for an actuator which provides pushing on one syringe and pulling on the other syringe for injecting new reagent and withdrawing used reagent from an associated sensor.

  19. High aspect ratio, remote controlled pumping assembly

    DOE Patents [OSTI]

    Brown, S.B.; Milanovich, F.P.

    1995-11-14T23:59:59.000Z

    A miniature dual syringe-type pump assembly is described which has a high aspect ratio and which is remotely controlled, for use such as in a small diameter penetrometer cone or well packer used in water contamination applications. The pump assembly may be used to supply and remove a reagent to a water contamination sensor, for example, and includes a motor, gearhead and motor encoder assembly for turning a drive screw for an actuator which provides pushing on one syringe and pulling on the other syringe for injecting new reagent and withdrawing used reagent from an associated sensor. 4 figs.

  20. ENGO 435 Remote Sensing LAB 1: INTRODUCTION TO REMOTE SENSING

    E-Print Network [OSTI]

    Habib, Ayman

    ENGO 435 ­ Remote Sensing Fall 2003 LAB 1: INTRODUCTION TO REMOTE SENSING Due: By 4:30 pm on September 30th Objectives: To familiarize you with: Remote sensing resources on the Internet. Some remote (Metadata). Part A: Remote Sensing Resources There is a wealth of remote sensing information and data

  1. Remote Desktop | Argonne National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Remote Desktop Use a remote desktop connection to access your work computer from home. Using Remote Desktop to Connect to Your Work Computer With Remote Desktop, you can have...

  2. Summer Research: Interfacing a sensor mote for a structural health

    E-Print Network [OSTI]

    Petta, Jason

    Summer Research: Interfacing a sensor mote for a structural health monitoring application Godohaldo Monitoring (taken from www.photo.net) Structural Health Monitoring (taken from en.wikipedia.org) Environmental Monitoring (taken from www.dailywordpowerbook.com) #12;Structural health monitoring Monitor

  3. Measurement and Monitoring of the World's Forests: A Review and...

    Open Energy Info (EERE)

    Measurement and Monitoring of the World's Forests: A Review and Summary of Remote Sensing Technical Capability, 2009-2015 Jump to: navigation, search Tool Summary LAUNCH TOOL Name:...

  4. Sensor-Aided Overlay Deployment and Relocation for Vast-Scale Sensor Networks

    E-Print Network [OSTI]

    Qiao, Daji

    a wireless sensor network is to monitor a target field and, upon occurrence of events of interest, to deliver are deployed to monitor a huge target area. Moreover, due to the funneling effect, it becomes more difficult

  5. Lean blowoff detection sensor

    SciTech Connect (OSTI)

    Thornton, Jimmy (Morgantown, WV); Straub, Douglas L. (Morgantown, WV); Chorpening, Benjamin T. (Morgantown, WV); Huckaby, David (Morgantown, WV)

    2007-04-03T23:59:59.000Z

    Apparatus and method for detecting incipient lean blowoff conditions in a lean premixed combustion nozzle of a gas turbine. A sensor near the flame detects the concentration of hydrocarbon ions and/or electrons produced by combustion and the concentration monitored as a function of time are used to indicate incipient lean blowoff conditions.

  6. Thermoacoustic sensor for nuclear fuel temperaturemonitoring and heat transfer enhancement

    SciTech Connect (OSTI)

    James A. Smith; Dale K. Kotter; Randall A. Alli; Steven L. Garrett

    2013-05-01T23:59:59.000Z

    A new acoustical sensing system for the nuclear power industry has been developed at The Pennsylvania State University in collaboration with Idaho National Laboratories. This sensor uses the high temperatures of nuclear fuel to convert a nuclear fuel rod into a standing-wave thermoacoustic engine. When a standing wave is generated, the sound wave within the fuel rod will be propagated, by acoustic radiation, through the cooling fluid within the reactor or spent fuel pool and can be monitored a remote location external to the reactor. The frequency of the sound can be correlated to an effective temperature of either the fuel or the surrounding coolant. We will present results for a thermoacoustic resonator built into a Nitonic-60 (stainless steel) fuel rod that requires only one passive component and no heat exchangers.

  7. Ris-R-1342(EN) Fundamentals for Remote Structural

    E-Print Network [OSTI]

    Risř-R-1342(EN) Fundamentals for Remote Structural Health Monitoring of Wind Turbine Blades ­ a Preproject Annex C ­ Fibre Transducer for Damage Detection in Adhesive Layers of Wind Turbine Blades Peter Structural Health Monitoring of Wind Turbine Blades ­ a Preproject Annex C - Fibre Transducer for Damage

  8. Remote File PC Users Guide

    E-Print Network [OSTI]

    University of Technology, Sydney

    UTS: ITD Remote File Access 2010 PC Users Guide V3.0 #12;UTS:ITD Remote File Access: PC Users Guide Part III: Accessing Remote File Access 8 Part IV: Using Remote File Access 14 Part V: FAQ 25 #12;UTS:ITD Remote File Access: PC Users Guide v3.0 2010 3 1. What is Remote File Access? UTS Remote File Access

  9. Aircraft Cabin Environmental Quality Sensors

    SciTech Connect (OSTI)

    Gundel, Lara; Kirchstetter, Thomas; Spears, Michael; Sullivan, Douglas

    2010-05-06T23:59:59.000Z

    The Indoor Environment Department at Lawrence Berkeley National Laboratory (LBNL) teamed with seven universities to participate in a Federal Aviation Administration (FAA) Center of Excellence (COE) for research on environmental quality in aircraft. This report describes research performed at LBNL on selecting and evaluating sensors for monitoring environmental quality in aircraft cabins, as part of Project 7 of the FAA's COE for Airliner Cabin Environmental Research (ACER)1 effort. This part of Project 7 links to the ozone, pesticide, and incident projects for data collection and monitoring and is a component of a broader research effort on sensors by ACER. Results from UCB and LBNL's concurrent research on ozone (ACER Project 1) are found in Weschler et al., 2007; Bhangar et al. 2008; Coleman et al., 2008 and Strom-Tejsen et al., 2008. LBNL's research on pesticides (ACER Project 2) in airliner cabins is described in Maddalena and McKone (2008). This report focused on the sensors needed for normal contaminants and conditions in aircraft. The results are intended to complement and coordinate with results from other ACER members who concentrated primarily on (a) sensors for chemical and biological pollutants that might be released intentionally in aircraft; (b) integration of sensor systems; and (c) optimal location of sensors within aircraft. The parameters and sensors were selected primarily to satisfy routine monitoring needs for contaminants and conditions that commonly occur in aircraft. However, such sensor systems can also be incorporated into research programs on environmental quality in aircraft cabins.

  10. Localization with Dive'N'Rise (DNR) Beacons for Underwater Acoustic Sensor Networks

    E-Print Network [OSTI]

    Zhou, Shengli

    Localization with Dive'N'Rise (DNR) Beacons for Underwater Acoustic Sensor Networks Melike Erol-Based Systems]: Underwater acoustic sensor networks - localization General Terms: Performance Keywords: Underwater sensor networks, localization, positioning, mobile beacon 1. INTRODUCTION Pollution monitoring

  11. Energy-Efficient Data Gathering in Heterogeneous Wireless Sensor Networks

    E-Print Network [OSTI]

    Cardei, Mihaela

    1 Energy-Efficient Data Gathering in Heterogeneous Wireless Sensor Networks Wael Awada and Mihaela of energy constrained wireless sensor nodes. Sensor nodes are deployed randomly to monitor a number of targets. Since targets are redundantly covered by more sensors, in order to conserve energy resources, we

  12. A Study of Approximate Data Management Techniques for Sensor Networks

    E-Print Network [OSTI]

    Martin, Ralph R.

    the monitoring operation of sensor nodes by efficiently using their limited energy, bandwidth and computation. The network can therefore be treated as a distributed sensor data management system. Sensor networks differA Study of Approximate Data Management Techniques for Sensor Networks Adonis Skordylis, Niki

  13. Fiber Optic Temperature Sensor for PEM Fuel Cells

    E-Print Network [OSTI]

    Fiber Optic Temperature Sensor for PEM Fuel Cells S.W. Allison, T.J. McIntyre, L.C. Maxey, M a Waveguide Temperature Sensor? · Reliability - fiber optic sensors are immune to oxidizing or reducing Objectives · Develop a low cost, robust temperature sensor for monitoring fuel cell condition and performance

  14. Novel monitoring system to diagnose rail track foundation problems

    E-Print Network [OSTI]

    Aw, Eng Sew, 1978-

    2004-01-01T23:59:59.000Z

    A low cost, remote monitoring system has been developed to diagnose rail track subgrade failures. The portable monitoring system consists of five liquid vertical settlement probes, one piezometer, a small data acquisition ...

  15. Remote Sensing ENGO 435 Introduction to Remote Sensing

    E-Print Network [OSTI]

    Habib, Ayman

    1 Remote Sensing ENGO 435 Introduction to Remote Sensing Fall 2003 #12;2 Remote Sensing ENGO 435://www.geomatics.ucalgar.ca/~habib/courses.html #12;3 Remote Sensing ENGO 435 Grading Scheme · Lab Assignments (5 labs): (25% of Total Grade will be reduced by 10% per day for each day overdue. #12;4 Remote Sensing ENGO 435 Programming & Software

  16. Perimeter Coverage Made Practical in Wireless Sensor Networks

    E-Print Network [OSTI]

    Tam, Vincent W. L.

    the minimum set of sensors and the set of sensors with the minimum cost to monitor the target. Unfortunately (MC). By using MC to monitor the target object, the energy expenditure is minimal. In [9], Chow et. al-related cost metrics, using MCC to monitor the target object maybe more effective in maximizing the network

  17. Estimation of Human Energy Expenditure Using Inertial Sensors and Heart Rate Sensor

    E-Print Network [OSTI]

    Lu?trek, Mitja

    Estimation of Human Energy Expenditure Using Inertial Sensors and Heart Rate Sensor Bozidara, we tested a combination of thigh inertial sensor with hart rate monitor, usually worn by athletes and availability and ease of development. Average smart phone has a rather powerful processing unit. It comes

  18. On Perimeter Coverage in Wireless Sensor Networks with Minimum Cost

    E-Print Network [OSTI]

    Tam, Vincent W. L.

    , and asset tracking [1], [2]. In monitoring applications, small battery-powered sensor nodes are deployed of the white house so as to ensure its security. Each sensor is associated with a cost. To reduce the total

  19. Harsh Environment Silicon Carbide Sensor Technology for Geothermal Instrumentation

    Broader source: Energy.gov [DOE]

    Project objectives: Develop advanced sensor technology for the direct monitoring of geothermal reservoirs. Engineer sensors to survive and operate in H2O pressures up to 220 bar and temperatures as high as 374o C.

  20. Remote Systems Design & Deployment

    SciTech Connect (OSTI)

    Bailey, Sharon A.; Baker, Carl P.; Valdez, Patrick LJ

    2009-08-28T23:59:59.000Z

    The Pacific Northwest National Laboratory (PNNL) was tasked by Washington River Protection Solutions, LLC (WRPS) to provide information and lessons learned relating to the design, development and deployment of remote systems, particularly remote arm/manipulator systems. This report reflects PNNL’s experience with remote systems and lays out the most important activities that need to be completed to successfully design, build, deploy and operate remote systems in radioactive and chemically contaminated environments. It also contains lessons learned from PNNL’s work experiences, and the work of others in the national laboratory complex.

  1. Multipoint Pressure and Temperature Sensing Fiber Optic Cable for Monitoring CO2 Sequestration

    SciTech Connect (OSTI)

    Challener, William

    2014-12-31T23:59:59.000Z

    This report describes the work completed on contract DE-FE0010116. The goal of this two year project was to develop and demonstrate in the laboratory a highly accurate multi-point pressure measurement fiber optic cable based on MEMS pressure sensors suitable for downhole deployment in a CO2 sequestration well. The sensor interrogator was also to be demonstrated in a remote monitoring system and environmental testing was to be completed to indicate its downhole survivability over a lengthy period of time (e.g., 20 years). An interrogator system based on a pulsed laser excitation was shown to be capable of multiple (potentially 100+) simultaneous sensor measurements. Two sensors packages were completed and spliced in a cable onto the same fiber and measured. One sensor package was subsequently measured at high temperatures and pressures in supercritical CO2, while the other package was measured prior and after being subjected to high torque stresses to mimic downhole deployment. The environmental and stress tests indicated areas in which the package design should be further improved.

  2. Refrigeration monitor and alarm system

    SciTech Connect (OSTI)

    Branz, M.A.; Renaud, P.F.

    1986-09-23T23:59:59.000Z

    A monitor is described for a refrigeration system including a heat reclaiming system coupled therewith, comprising: a sensor positioned to detect the level of liquid state refrigerant in the system and provide an electrical output signal therefrom; a digital display for displaying the refrigerant level; first circuit means coupling the digital display to the sensor for actuating the digital display; and lockout means coupled with the sensor for deactivating the heat reclaiming system when a preselected refrigerant level is reached.

  3. Remote Belief: Preserving Volition 2 Remote Belief: Preserving Volition 3

    E-Print Network [OSTI]

    Sivilotti, Paul

    1 ! " Remote Belief: Preserving Volition 2 # $ % & # ' # (& #) & $ $ $ $ $ & $ * # # $ $ * # * # $ $ # $ & # * & & %+ $ ' # & $ Remote Belief: Preserving Volition 3 , $ (- ). / $ / $ / 0 1/ / & $ / 0 $ $ & (1 - & ) 2 & # & $ & / 3 & / * # $ / 4 & Remote Belief: Preserving Volition 4 ! All possible scenarios Equivalence classes of scenarios

  4. REMOTE SENSING OF SAGEBRUSH COMMUNITY STRUCTURAL PATTERNS ACROSS SCALES

    E-Print Network [OSTI]

    Ramsey, R. Douglas

    projects is often limited. This research evaluated the ability of a suite of airborne and satellite imagery infrared (CIR) aerial photography, panchromatic, and multi-spectral satellite imagery, including data from rangeland managers, wildlife biologists, or other remote sensors, specifically when decisions related

  5. Applications of Remote Sensing to Study Climate Change

    E-Print Network [OSTI]

    Gilbes, Fernando

    to develop image processing techniques that later were used with Landsat data. #12;CIVILIAN SATELLITES 1970's was very much appreciated. #12;THE CUBAN MISSILE CRISIS 1962 · In fall 1962, reports indicated by current remote sensors is the electromagnetic energy emanating from the object of interest

  6. Chemical sensor system

    DOE Patents [OSTI]

    Darrow, Christopher B. (Pleasanton, CA); Satcher, Jr., Joe H. (Modesto, CA); Lane, Stephen M. (Oakland, CA); Lee, Abraham P. (Walnut Creek, CA); Wang, Amy W. (Berkeley, CA)

    2002-01-01T23:59:59.000Z

    An implantable chemical sensor system for medical applications is described which permits selective recognition of an analyte using an expandable biocompatible sensor, such as a polymer, that undergoes a dimensional change in the presence of the analyte. The expandable polymer is incorporated into an electronic circuit component that changes its properties (e.g., frequency) when the polymer changes dimension. As the circuit changes its characteristics, an external interrogator transmits a signal transdermally to the transducer, and the concentration of the analyte is determined from the measured changes in the circuit. This invention may be used for minimally invasive monitoring of blood glucose levels in diabetic patients.

  7. Implantable medical sensor system

    DOE Patents [OSTI]

    Darrow, Christopher B. (Pleasanton, CA); Satcher, Jr., Joe H. (Modesto, CA); Lane, Stephen M. (Oakland, CA); Lee, Abraham P. (Walnut Creek, CA); Wang, Amy W. (Berkeley, CA)

    2001-01-01T23:59:59.000Z

    An implantable chemical sensor system for medical applications is described which permits selective recognition of an analyte using an expandable biocompatible sensor, such as a polymer, that undergoes a dimensional change in the presence of the analyte. The expandable polymer is incorporated into an electronic circuit component that changes its properties (e.g., frequency) when the polymer changes dimension. As the circuit changes its characteristics, an external interrogator transmits a signal transdermally to the transducer, and the concentration of the analyte is determined from the measured changes in the circuit. This invention may be used for minimally invasive monitoring of blood glucose levels in diabetic patients.

  8. Remote USB Ports

    E-Print Network [OSTI]

    Roshan, Rakesh

    2013-10-01T23:59:59.000Z

    or actuator placed in fields can be accessed by a system remotely and securely. In this thesis, we propose a remote USB port, which is an abstraction of a USB port. In the USB core driver of the server machine, with the hub information, port status of all...

  9. Remote actuated valve implant

    DOE Patents [OSTI]

    McKnight, Timothy E; Johnson, Anthony; Moise, Jr., Kenneth J; Ericson, Milton Nance; Baba, Justin S; Wilgen, John B; Evans, III, Boyd McCutchen

    2014-02-25T23:59:59.000Z

    Valve implant systems positionable within a flow passage, the systems having an inlet, an outlet, and a remotely activatable valve between the inlet and outlet, with the valves being operable to provide intermittent occlusion of the flow path. A remote field is applied to provide thermal or magnetic activation of the valves.

  10. Evaluation of Remote Sensing Technologies for the Identification of Oceanographic Features Critical to Pelagic

    E-Print Network [OSTI]

    Hawai'i at Manoa, University of

    Evaluation of Remote Sensing Technologies for the Identification of Oceanographic Features Critical on data from two satellite sensors: the altimeter aboard TOPEX/POSEIDON and SeaWiFs ocean color to examine sensors detect biological change in mid-latitude North Pacific, 1997-2000. EOS, The American Geophysical

  11. Modeling Wildland Fire Radiance in Synthetic Remote Sensing B.S. Beijing Institute of Technology, 1996

    E-Print Network [OSTI]

    Salvaggio, Carl

    efforts in phenomenology studies, algorithm development, and sensor evaluation. Synthetic scenes are also and op- tical properties of wildfire and burn area in an infrared remote sensing system will assist look like as seen by the airborne sensor. Radiance scene rendering of the 3D flame iv #12;v includes 2D

  12. EC MoDeRn Project: In-situ Demonstration of Innovative Monitoring Technologies for Geological Disposal - 12053

    SciTech Connect (OSTI)

    Breen, B.J. [NDA, Herdus House, Westlakes Science and Technology Park, Moor Row, Cumbria, CA24 3HU (United Kingdom); Garcia-Sineriz, J.L. [AITEMIN, c/Margarita Salas 14-Parque Leganes Tecnologico-Leganes, ES-28918, Madrid (Spain); Maurer, H. [ETH Zurich, ETH Honggerberg, CH-8093, Zurich (Switzerland); Mayer, S. [ANDRA, 1-7 rue Jean-Monnet, F-92298 Chatenay-Malabry cedex (France); Schroeder, T.J. [NRG, P.O. Box 25, NL-1755 ZG Petten (Netherlands); Verstricht, J. [EURIDICE EIG, c/o SCK.CEN, Boeretang 200, BE-2400 Mol (Belgium)

    2012-07-01T23:59:59.000Z

    Monitoring to provide information on the evolution of geological disposal presents several challenges. The 4-year, euros M 5, EC MoDeRn Project (http://www.modern-fp7.eu/), which commenced in 2009, addresses monitoring processes, state-of-the-art technology and innovative research and development of monitoring techniques. This paper discusses some of the key drivers for the development of innovative monitoring techniques and provides outlines of the demonstration programmes being conducted within MoDeRn. The aim is to develop these innovative monitoring techniques and to demonstrate them under realistic conditions present in underground laboratories. These demonstration projects, applying a range of different monitoring techniques, are being carried out at underground research facilities in different geological environments at HADES URL in Belgium (plastic clay), Bure in France (indurated clay) and at Grimsel Test Site (granite) in Switzerland. These are either built upon existing infrastructure (EC ESDRED Low pH shotcrete and TEM experiments at Grimsel; and PRACLAY experiment and underground galleries in HADES) or will be attached to infrastructure that is being developed and financed by resources outside of this project (mock-up disposal cell in Bure). At Grimsel Test Site, cross-hole and hole-to-tunnel seismic methods are being employed as a means to monitor induced changes in an artificially saturated bentonite wall confined behind a shotcrete plug. Recognising the limitations for travel-time tomography for monitoring a disposal cell, full waveform inversion techniques are being employed to enhance the capacity to monitor remote from the excavation. At the same Grimsel location, an investigation will be conducted of the potential for using a high frequency wireless (HFW) sensor network embedded within the barrier system; this will include the possibility of providing energy remotely to isolated sensors. At the HADES URL, the monitoring programme will utilise the PRACLAY gallery equipped to simulate a disposal gallery for heat-generating high-level waste evaluating fibre-optic based sensing techniques, including distributed sensing for thermal distribution and long-term reliability in harsh conditions. It also includes the potential to improve the treatment of signals from micro-seismic monitoring to enable enhanced understanding of the evolution around the gallery following its excavation due to ventilation, saturation and heating, and to image a water-bearing concretion layer. HADES URL will also be used to test wireless techniques to transmit monitoring data from the underground to the surface. The main focus of this contribution is to evaluate magneto-inductive data transmission; and to optimise energy usage. At the Bure underground facility in France, monitoring systems have been developed and will be embedded into the steel liner for the mock-up high-level waste disposal tunnel. The aim of this programme is to establish the capacity to conduct integrated monitoring activities inside the disposal cell, on the cell liner and in the near-field and to assess the capability of the monitoring to withstand construction and liner emplacement procedures. These projects, which are supported by focused development and testing of the monitoring systems, will allow the testing of both the effectiveness of these techniques applied to disposal situations and to understand the limits of these monitoring technologies. This approach should also enhance the confidence of key stakeholders in the ability to understand/confirm the changes occurring within a disposal cell. In addition, remote or 'non-intrusive' monitoring technologies are evaluated to provide a means of enhancing understanding of what is occurring in an isolated disposal cell. The projects also test solutions for embedded monitoring systems in challenging (risk of damage) situations. The outputs from this work will lead to improved understanding of these state-of-the-art techniques and allow focused development of those techniques beneficial to future monitoring progr

  13. Maximal Lifetime Scheduling for Sensor Surveillance Systems with

    E-Print Network [OSTI]

    Jia, Xiaohua

    .Givenasetoftargetsandsensors and a base station (BS) in an area, the sensors are used to watch (or monitor) the targets and collect sensed

  14. Long-Term, Autonomous Measurement of Atmospheric Carbon Dioxide Using an Ormosil Nanocomposite-Based Optical Sensor

    SciTech Connect (OSTI)

    Kisholoy Goswami

    2005-10-11T23:59:59.000Z

    The goal of this project is to construct a prototype carbon dioxide sensor that can be commercialized to offer a low-cost, autonomous instrument for long-term, unattended measurements. Currently, a cost-effective CO2 sensor system is not available that can perform cross-platform measurements (ground-based or airborne platforms such as balloon and unmanned aerial vehicle (UAV)) for understanding the carbon sequestration phenomenon. The CO2 sensor would support the research objectives of DOE-sponsored programs such as AmeriFlux and the North American Carbon Program (NACP). Global energy consumption is projected to rise 60% over the next 20 years and use of oil is projected to increase by approximately 40%. The combustion of coal, oil, and natural gas has increased carbon emissions globally from 1.6 billion tons in 1950 to 6.3 billion tons in 2000. This figure is expected to reach 10 billon tons by 2020. It is important to understand the fate of this excess CO2 in the global carbon cycle. The overall goal of the project is to develop an accurate and reliable optical sensor for monitoring carbon dioxide autonomously at least for one year at a point remote from the actual CO2 release site. In Phase I of this project, InnoSense LLC (ISL) demonstrated the feasibility of an ormosil-monolith based Autonomous Sensor for Atmospheric CO2 (ASAC) device. All of the Phase I objectives were successfully met.

  15. Rack protection monitor

    DOE Patents [OSTI]

    Orr, Stanley G. (Wheaton, IL)

    2000-01-01T23:59:59.000Z

    A hardwired, fail-safe rack protection monitor utilizes electromechanical relays to respond to the detection by condition sensors of abnormal or alarm conditions (such as smoke, temperature, wind or water) that might adversely affect or damage equipment being protected. When the monitor is reset, the monitor is in a detection mode with first and second alarm relay coils energized. If one of the condition sensors detects an abnormal condition, the first alarm relay coil will be de-energized, but the second alarm relay coil will remain energized. This results in both a visual and an audible alarm being activated. If a second alarm condition is detected by another one of the condition sensors while the first condition sensor is still detecting the first alarm condition, both the first alarm relay coil and the second alarm relay coil will be de-energized. With both the first and second alarm relay coils de-energized, both a visual and an audible alarm will be activated. In addition, power to the protected equipment will be terminated and an alarm signal will be transmitted to an alarm central control. The monitor can be housed in a separate enclosure so as to provide an interface between a power supply for the protected equipment and the protected equipment.

  16. Center for Remote Sensing Remote Sensing Seminar Series 2009

    E-Print Network [OSTI]

    Firestone, Jeremy

    Feili Li Center for Remote Sensing 10-20-2009 Remote Sensing Seminar Series 2009 #12;Outline for Meteorological Satellite Studies · University of South Florida - Institute for Marine Remote Sensing · Rutgers MODIS Today Real-Time Polar Remote Sensing Products #12;Software Visualization FlAniS AniS is still

  17. Remote-Reading Safety and Safeguards Surveillance System for 3013 Containers

    SciTech Connect (OSTI)

    Lechelt, W. M.; Skorpik, J. R.; Silvers, K. L.; Szempruch, R. W.; Douglas, D. G.; Fein, K. O.

    2002-02-26T23:59:59.000Z

    At Hanford's Plutonium Finishing Plant (PFP), plutonium oxide is being loaded into stainless steel containers for long-term storage on the Hanford Site. These containers consist of two weld-sealed stainless steel cylinders nested one within the other. A third container holds the plutonium within the inner cylinder. This design meets the U.S. Department of Energy (DOE) storage standard, DOE-STD- 3013-2000, which anticipates a 50-year storage lifetime. The 3013 standard also requires a container surveillance program to continuously monitor pressure and to assure safeguards are adequate. However, the configuration of the container system makes using conventional measurement and monitoring methods difficult. To better meet the 3013 monitoring requirements, a team from Fluor Hanford (who manages the PFP), Pacific Northwest National Laboratory (PNNL), and Vista Engineering Technologies, LLC, developed a safer, cost-efficient, remote PFP 3013 container surveillance system. This new surveillance system is a combination of two successfully deployed technologies: (1) a magnetically coupled pressure gauge developed by Vista Engineering and (2) a radio frequency (RF) tagging device developed by PNNL. This system provides continuous, 100% monitoring of critical parameters with the containers in place, as well as inventory controls. The 3013 container surveillance system consists of three main elements: (1) an internal magnetic pressure sensor package, (2) an instrument pod (external electronics package), and (3) a data acquisition storage and display computer. The surveillance system described in this paper has many benefits for PFP and DOE in terms of cost savings and reduced personnel exposure. In addition, continuous safety monitoring (i.e., internal container pressure and temperature) of every container is responsible nuclear material stewardship and fully meets and exceeds DOE's Integrated Surveillance Program requirements.

  18. air pollutant monitoring: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 A Wireless Sensor Network Air Pollution Monitoring System CERN Preprints Summary: Sensor networks are currently an...

  19. air pollution monitoring: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 A Wireless Sensor Network Air Pollution Monitoring System CERN Preprints Summary: Sensor networks are currently an...

  20. Challenges for Efficient Communication in Underwater Acoustic Sensor Networks

    E-Print Network [OSTI]

    Pompili, Dario

    Challenges for Efficient Communication in Underwater Acoustic Sensor Networks Ian F. Akyildiz for oceano- graphic data collection, pollution monitoring, offshore explo- ration and tactical surveillance in collaborative monitoring missions. Underwater acoustic network- ing is the enabling technology

  1. NOx Sensor Development

    SciTech Connect (OSTI)

    Woo, L Y; Glass, R S

    2009-10-27T23:59:59.000Z

    The objectives of this report are: (1) Develop an inexpensive, rapid-response, high-sensitivity and selective electrochemical sensor for oxides of nitrogen (NO{sub x}) for compression-ignition, direct-injection (CIDI) exhaust gas monitoring; (2) Explore and characterize novel, effective sensing methodologies based on impedance measurements; (3) Explore designs and manufacturing methods that could be compatible with mass fabrication; and (4) Collaborate with industry in order to (ultimately) transfer the technology to a supplier for commercialization.

  2. REMOTE SENSING OF THE ENVIRONMENT

    E-Print Network [OSTI]

    Gilbes, Fernando

    1 CHAPTER 1: REMOTE SENSING OF THE ENVIRONMENT REFERENCE: Remote Sensing of the Environment John R. Jensen (2007) Second Edition Pearson Prentice Hall What is Remote Sensing? #12;2 Photogrammetry ­ the art of identifying objects and judging their significance (Colwell, 1966). Remote Sensing ­ the measurement

  3. REMOTE ACCESS SERVICES | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sure you wantJoin us for| Department ofRightsSmart Sensors Mean EnergyREMOTE

  4. Thermal Infrared Remote Sensing

    E-Print Network [OSTI]

    Thermal Infrared Remote Sensing Thermal Infrared Remote Sensing #12;0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4 and x-ray Ultraviolet Infrared Microwave and radio waves Wavelength in meters (m) Electromagnetic.77 700 red limit 30k0.041 2.48 green500 near-infrared far infrared ultraviolet Thermal Infrare refers

  5. Concept of Operations for Nuclear Warhead Embedded Sensors

    SciTech Connect (OSTI)

    Rockett, P D; Koncher, T R

    2012-05-16T23:59:59.000Z

    Embedded arms-control-sensors provide a powerful new paradigm for managing compliance with future nuclear weapons treaties, where deployed warhead numbers will be reduced to 1000 or less. The CONOPS (Concept of Operations) for use with these sensors is a practical tool with which one may help define design parameters, including size, power, resolution, communications, and physical structure. How frequently must data be acquired and must a human be present? Will such data be acquired for only stored weapons or will it be required of deployed weapons as well? Will tactical weapons be subject to such monitoring or will only strategic weapons apply? Which data will be most crucial? Will OSI's be a component of embedded sensor data management or will these sensors stand alone in their data extraction processes? The problem space is massive, but can be constrained by extrapolating to a reasonable future treaty regime and examining the bounded options this scenario poses. Arms control verification sensors, embedded within the warhead case or aeroshell, must provide sufficient but not excessively detailed data, confirming that the item is a nuclear warhead and that it is a particular warhead without revealing sensitive information. Geolocation will be provided by an intermediate transceiver used to acquire the data and to forward the data to a central processing location. Past Chain-of-Custody projects have included such devices and will be primarily responsible for adding such indicators in the future. For the purposes of a treaty regime a TLI will be verified as a nuclear warhead by knowledge of (a) the presence and mass of SNM, (b) the presence of HE, and (c) the reporting of a unique tag ID. All of these parameters can be obtained via neutron correlation measurements, Raman spectroscopy, and fiber optic grating fabrication, respectively. Data from these sensors will be pushed out monthly and acquired nearly daily, providing one of several verification layers in depth, including on-site inspections, NTM, declarations, and semi-annual BCC meetings. Human intervention will not be necessary. The sheer numbers, small size, and wide distribution of warhead TLIs will mandate the added level of remote monitoring that Embedded Sensors can provide. This multilayer protection will limit the need to increase the frequency of OSIs, by adding confidence that declared TLIs remain as declared and that no undeclared items enter the regime without the other States Party's knowledge. Acceptance of Embedded arms control Sensor technologies will require joint development by all State's Parties involved. Principles of operation and robustness of technologies must be individually evaluated to sustain confidence in the strength of this system against attack. Weapons designers must be assured that these sensors will in no way impact weapon performance and operation, will not affect weapons security and safety, and will have a neutral impact upon weapon system surety. Each State's Party will need to conduct an in depth review of their weapons lifecycle to determine where moves may be reduced to minimize vulnerabilities and where random selection may be used to minimize the ability to make undeclared changes. In the end Verification is a political measure, not a technical one. If the potential users can gain sufficient confidence in the application of Embedded arms control Sensors, they could constitute the final layer of glue to hold together the next Nuclear Arms Control agreement.

  6. Scheduling Sensor Activity for Point Information Coverage in Wireless Sensor Networks

    E-Print Network [OSTI]

    Srinivasan, Vikram

    , to monitor some targets of interests at all times. Sensors are often equipped with non-rechargeable batteries such that all targets can be monitored all the time and the network can operate as long as possible. A solution network is the coverage problem [2], which addresses how well a target area is monitored. In some

  7. Energy Management in Wireless Sensor Network Operations 

    E-Print Network [OSTI]

    Mohapatra, Arupa Kumar

    2013-07-26T23:59:59.000Z

    problem (Case I), we consider minimizing energy and node replacement costs in underwater wireless sensor networks for seismic monitoring application. In this case, we introduce mixed-integer programming (MIP) formulations based on a combined routing...

  8. Urea biosensor for hemodialysis monitoring

    DOE Patents [OSTI]

    Glass, Robert S. (Livermore, CA)

    1999-01-01T23:59:59.000Z

    An electrochemical sensor capable of detecting and quantifying urea in fluids resulting from hemodialysis procedures. The sensor is based upon measurement of the pH change produced in an aqueous environment by the products of the enzyme-catalyzed hydrolysis of urea. The sensor may be fabricated using methods amenable to mass fabrication, resulting in low-cost sensors and thus providing the potential for disposable use. In a typical application, the sensor could be used in treatment centers, in conjunction with an appropriate electronics/computer system, in order to determine the hemodialysis endpoint. The sensor can also be utilized to allow at-home testing to determine if dialysis was necessary. Such a home monitor is similar, in principle, to devices used for blood glucose testing by diabetics, and would require a blood droplet sample by using a finger prick.

  9. Urea biosensor for hemodialysis monitoring

    DOE Patents [OSTI]

    Glass, R.S.

    1999-01-12T23:59:59.000Z

    This research discloses an electrochemical sensor capable of detecting and quantifying urea in fluids resulting from hemodialysis procedures. The sensor is based upon measurement of the pH change produced in an aqueous environment by the products of the enzyme-catalyzed hydrolysis of urea. The sensor may be fabricated using methods amenable to mass fabrication, resulting in low-cost sensors and thus providing the potential for disposable use. In a typical application, the sensor could be used in treatment centers, in conjunction with an appropriate electronics/computer system, in order to determine the hemodialysis endpoint. The sensor can also be utilized to allow at-home testing to determine if dialysis was necessary. Such a home monitor is similar, in principle, to devices used for blood glucose testing by diabetics, and would require a blood droplet sample by using a finger prick. 9 figs.

  10. SLAMBOT: Structural Health Monitoring Robot using Lamb

    E-Print Network [OSTI]

    Henderson, Thomas C.

    SLAMBOT: Structural Health Monitoring Robot using Lamb Waves Wenyi Wang, Thomas C. Henderson of a mobile robot and a computational sensor network ap- proach to perform structural health monitoring of ultrasound propagation through the material is used to define two structural health monitoring meth- ods: (1

  11. A Novel Routing Metric for Environmentally-Powered Sensors With Hybrid

    E-Print Network [OSTI]

    Ingram, Mary Ann

    for remote patient monitoring, monitoring the health of civil structures (e.g. bridges, office buildings (CHESS)" routing metric, we intend to extend the lifetime of an energy-constrained network using

  12. Near-surface remote sensing of canopy architecture and land-atmosphere interactions in an oak savanna ecosystem

    E-Print Network [OSTI]

    Ryu, Youngryel

    2010-01-01T23:59:59.000Z

    sensor, built with light emitting diodes (LEDs), to monitorSun photometer with light emitting diodes as spectrallySen, C. (2009). Light emitting diode as sensor for miniature

  13. Monitoring of Fracture Cri0cal Steel Bridges

    E-Print Network [OSTI]

    Minnesota, University of

    #12;Monitoring of Fracture Cri0cal Steel Bridges: Acous0c Emission Sensors system on other fracture cri0cal steel bridges #12;Project Impact #12;Thank

  14. Sensor device and methods for using same

    DOE Patents [OSTI]

    Rothgeb, Timothy Michael; Gansle, Kristina Marie Rohal; Joyce, Jonathan Livingston; Jordan, James Madison; Rohwer, Tedd Addison; Lockhart, Randal Ray; Smith, Christopher Lawrence; Trinh, Toan; Cipollone, Mark Gary

    2005-10-25T23:59:59.000Z

    A sensor device and method of employment is provided. More specifically, a sensor device adapted to detect, identify and/or measure a chemical and/or physical characteristic upon placement of the device into an environment, especially a liquid medium for which monitoring is sought is provided.

  15. ON-ROAD REMOTE SENSING OF VEHICLE EMISSIONS IN MONTERREY, N.L. MEXICO

    E-Print Network [OSTI]

    Denver, University of

    ON-ROAD REMOTE SENSING OF VEHICLE EMISSIONS IN MONTERREY, N.L. MEXICO Final Report Prepared for the University of Denver traveled to Monterrey, N.L. Mexico to monitor remotely the carbon monoxide (CO with other cities that have been sampled in Mexico. The on-road emission averages are similar to the latest

  16. Sustainable Energy for Development The evolution of technologies provides remote, non-grid

    E-Print Network [OSTI]

    Mottram, Nigel

    Sustainable Energy for Development GOALS: The evolution of technologies provides remote, non, energy storage, light emitting diodes, energy monitoring and management. RESEARCH ISSUES: Investigate the correlation of energy and social well being and associated energy costs. Research current methods

  17. Design, development, and validation of a remotely reconfigurable vehicle telemetry system for consumer and government applications

    E-Print Network [OSTI]

    Siegel, Joshua Eric

    2011-01-01T23:59:59.000Z

    This thesis explores the design and development of a cost-effective, easy-to-use system for remotely monitoring vehicle performance and drivers' habits, with the aim of collecting data for vehicle characterization and ...

  18. SeRLoc: Robust Localization for Wireless Sensor Networks

    E-Print Network [OSTI]

    Hochberg, Michael

    SeRLoc: Robust Localization for Wireless Sensor Networks LOUKAS LAZOS and RADHA POOVENDRAN University of Washington Many distributed monitoring applications of Wireless Sensor Networks (WSNs) require of Wireless Sensor Networks to determine their location in an untrusted environment, known as the secure

  19. INTERFACIAL STABILITY OF THIN FILM FIBER-OPTIC HYDROGEN SENSORS

    E-Print Network [OSTI]

    INTERFACIAL STABILITY OF THIN FILM FIBER-OPTIC HYDROGEN SENSORS R. Davis Smith, Ping Liu, Se and utility of these sensors, especially in the configuration that is based upon the optical response hydrogen sensors for use as safety monitors wherever hydrogen is used, stored, or produced. Prior work has

  20. Remote connector development study

    SciTech Connect (OSTI)

    Parazin, R.J.

    1995-05-01T23:59:59.000Z

    Plutonium-uranium extraction (PUREX) connectors, the most common connectors used at the Hanford site, offer a certain level of flexibility in pipe routing, process system configuration, and remote equipment/instrument replacement. However, these desirable features have inherent shortcomings like leakage, high pressure drop through the right angle bends, and a limited range of available pipe diameters that can be connect by them. Costs for construction, maintenance, and operation of PUREX connectors seem to be very high. The PUREX connector designs include a 90{degree} bend in each connector. This increases the pressure drop and erosion effects. Thus, each jumper requires at least two 90{degree} bends. PUREX connectors have not been practically used beyond 100 (4 in.) inner diameter. This study represents the results of a survey on the use of remote pipe-connection systems in US and foreign plants. This study also describes the interdependence between connectors, remote handling equipment, and the necessary skills of the operators.

  1. COMPENSATION OF TEMPERATURE EFFECTS ON GUIDED WAVE BASED STRUCTURAL HEALTH MONITORING SYSTEMS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    COMPENSATION OF TEMPERATURE EFFECTS ON GUIDED WAVE BASED STRUCTURAL HEALTH MONITORING SYSTEMS C strategy are investigated. KEYWORDS : Structural Health Monitoring (SHM), Guided Waves, Piezoelectric Sensors, Temperature Effects, Signal Processing. Introduction: STRUCTURAL HEALTH MONITORING

  2. Battery system with temperature sensors

    DOE Patents [OSTI]

    Wood, Steven J.; Trester, Dale B.

    2012-11-13T23:59:59.000Z

    A battery system to monitor temperature includes at least one cell with a temperature sensing device proximate the at least one cell. The battery system also includes a flexible member that holds the temperature sensor proximate to the at least one cell.

  3. Optimized Node Selection for Compressive Sleeping Wireless Sensor Networks

    E-Print Network [OSTI]

    Chen, Wei; Wassell, Ian J.

    2015-02-05T23:59:59.000Z

    1Optimized Node Selection for Compressive Sleeping Wireless Sensor Networks Wei Chen, Member, IEEE, and Ian J. Wassell Abstract—In this paper, we propose an active node selection framework for compressive sleeping wireless sensor networks (WSNs... development oftechnologies in sensing, computing and communication has made it possible to employ wireless sensor networks (WSNs) to continuously monitor physical phenomena in a variety of applications, for example air quality monitoring, wildlife tracking...

  4. Health monitoring method for composite materials

    DOE Patents [OSTI]

    Watkins, Jr., Kenneth S. (Dahlonega, GA); Morris, Shelby J. (Hampton, VA)

    2011-04-12T23:59:59.000Z

    An in-situ method for monitoring the health of a composite component utilizes a condition sensor made of electrically conductive particles dispersed in a polymeric matrix. The sensor is bonded or otherwise formed on the matrix surface of the composite material. Age-related shrinkage of the sensor matrix results in a decrease in the resistivity of the condition sensor. Correlation of measured sensor resistivity with data from aged specimens allows indirect determination of mechanical damage and remaining age of the composite component.

  5. Remote measurement of corrosion using ultrasonic techniques

    SciTech Connect (OSTI)

    Garcia, K.M.; Porter, A.M.

    1995-02-01T23:59:59.000Z

    Supercritical water oxidation (SCWO) technology has the potential of meeting the US Department of Energy`s treatment requirements for mixed radioactive waste. A major technical constraint of the SCWO process is corrosion. Safe operation of a pilot plant requires monitoring of the corrosion rate of the materials of construction. A method is needed for measurement of the corrosion rate taking place during operation. One approach is to directly measure the change in wall thickness or growth of oxide layer at critical points in the SCWO process. In FY-93, a brief survey of the industry was performed to evaluate nondestructive evaluation (NDE) methods for remote corrosion monitoring in supercritical vessels. As a result of this survey, it was determined that ultrasonic testing (UT) methods would be the most cost-effective and suitable method of achieving this. Therefore, the objective for FY-94 was to prove the feasibility of using UT to monitor corrosion of supercritical vessels remotely during operation without removal of the insulation.

  6. rfs Remote File System Softwarepraktikum fur Fortgeschrittene

    E-Print Network [OSTI]

    rfs ­ Remote File System Softwarepraktikum f¨ur Fortgeschrittene Parallele und Verteilte Systeme. Overview 5 2.1. Remote File System Daemon . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2. Remote File System Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.3. Global Remote

  7. Monitoring probe for groundwater flow

    DOE Patents [OSTI]

    Looney, B.B.; Ballard, S.

    1994-08-23T23:59:59.000Z

    A monitoring probe for detecting groundwater migration is disclosed. The monitor features a cylinder made of a permeable membrane carrying an array of electrical conductivity sensors on its outer surface. The cylinder is filled with a fluid that has a conductivity different than the groundwater. The probe is placed in the ground at an area of interest to be monitored. The fluid, typically saltwater, diffuses through the permeable membrane into the groundwater. The flow of groundwater passing around the permeable membrane walls of the cylinder carries the conductive fluid in the same general direction and distorts the conductivity field measured by the sensors. The degree of distortion from top to bottom and around the probe is precisely related to the vertical and horizontal flow rates, respectively. The electrical conductivities measured by the sensors about the outer surface of the probe are analyzed to determine the rate and direction of the groundwater flow. 4 figs.

  8. Monitoring probe for groundwater flow

    DOE Patents [OSTI]

    Looney, Brian B. (Aiken, SC); Ballard, Sanford (Albuquerque, NM)

    1994-01-01T23:59:59.000Z

    A monitoring probe for detecting groundwater migration. The monitor features a cylinder made of a permeable membrane carrying an array of electrical conductivity sensors on its outer surface. The cylinder is filled with a fluid that has a conductivity different than the groundwater. The probe is placed in the ground at an area of interest to be monitored. The fluid, typically saltwater, diffuses through the permeable membrane into the groundwater. The flow of groundwater passing around the permeable membrane walls of the cylinder carries the conductive fluid in the same general direction and distorts the conductivity field measured by the sensors. The degree of distortion from top to bottom and around the probe is precisely related to the vertical and horizontal flow rates, respectively. The electrical conductivities measured by the sensors about the outer surface of the probe are analyzed to determine the rate and direction of the groundwater flow.

  9. An optical water vapor sensor for unmanned aerial vehicles

    SciTech Connect (OSTI)

    Timothy A. Berkoff; Paul L. Kebabian; Robert A. McClatchy; Charles E. Kolb; Andrew Freedman

    1998-12-01T23:59:59.000Z

    The water vapor sensor developed by Aerodyne Research, based on the optical absorption of light at {approximately}935 nm, has been successfully demonstrated on board the Pacific Northwest National Laboratory's Gulfstream-1 research aircraft during the Department of Energy's ARM Intensive Operations Period in August 1998. Data taken during this field campaign show excellent agreement with a chilled mirror and Lyman-alpha hygrometers and measurements confirm the ability to measure rapid, absolute water vapor fluctuations with a high degree of instrument stability and accuracy, with a noise level as low 10 ppmv (1 Hz measurement bandwidth). The construction of this small, lightweight sensor contains several unique elements which result in several significant advantages when compared to other techniques. First, the low power consumption Argon discharge lamp provides an optical beam at a fixed wavelength without a need for temperature or precision current control. The multi-pass absorption cell developed for this instrument provides a compact, low cost method that can survive deployment in the field. Fiber-optic cables, which are used to convey to light between the absorption cell, light source, and detection modules enable remote placement of the absorption cell from the opto-electronics module. Finally, the sensor does not use any moving parts which removes a significant source of potential malfunction. The result is an instrument which maintained its calibration throughout the field measurement campaign, and was not affected by high vibration and large uncontrolled temperature excursions. We believe that the development of an accurate, fast response water vapor monitor described in this report will open up new avenues of aerial-vehicle-based atmospheric research which have been relatively unexplored due to the lack of suitable low-cost, light-weight instrumentation.

  10. Extending Sensor Calibration Intervals in Nuclear Power Plants

    SciTech Connect (OSTI)

    Coble, Jamie B.; Meyer, Ryan M.; Ramuhalli, Pradeep; Bond, Leonard J.; Shumaker, Brent; Hashemian, Hash

    2012-11-15T23:59:59.000Z

    Currently in the USA, sensor recalibration is required at every refueling outage, and it has emerged as a critical path item for shortening outage duration. International application of calibration monitoring, such as at the Sizewell B plant in UK, has shown that sensors may operate for eight years, or longer, within calibration tolerances. Online monitoring can be employed to identify those sensors which require calibration, allowing for calibration of only those sensors which need it. The US NRC accepted the general concept of online monitoring for sensor calibration monitoring in 2000, but no plants have been granted the necessary license amendment to apply it. This project addresses key issues in advanced recalibration methodologies and provides the science base to enable adoption of best practices for applying online monitoring, resulting in a public domain standardized methodology for sensor calibration interval extension. Research to develop this methodology will focus on three key areas: (1) quantification of uncertainty in modeling techniques used for calibration monitoring, with a particular focus on non-redundant sensor models; (2) accurate determination of acceptance criteria and quantification of the effect of acceptance criteria variability on system performance; and (3) the use of virtual sensor estimates to replace identified faulty sensors to extend operation to the next convenient maintenance opportunity.

  11. Sensor network and soft sensor design for stable nonlinear dynamic systems 

    E-Print Network [OSTI]

    Singh, Abhay Kumar

    2006-10-30T23:59:59.000Z

    In chemical processes, online measurements of all the process variables and parameters required for process control, monitoring and optimization are seldom available. The use of soft sensors or observers is, therefore, highly significant as they can...

  12. REMOTE SENSING GEOLOGICAL SURVEY

    E-Print Network [OSTI]

    -ASTER that operate in visible, near infrared and short wave infrared wavelengths of electromagnetic spectrum and Reflection Radiometer) Imagery Collection in CPRM Examples of sensors used in the CPRM geologic projects #12

  13. Remote optical sensing on the nanometer scale with a bowtie aperture nano-antenna on a SNOM fiber tip

    E-Print Network [OSTI]

    Atie, Elie M; Eter, Ali El; Salut, Roland; Nedeljkovic, Dusan; Tannous, Tony; Baida, Fadi I; Grosjean, Thierry

    2015-01-01T23:59:59.000Z

    Plasmonic nano-antennas have proven the outstanding ability of sensing chemical and physical processes down to the nano-meter scale. Sensing is usually achieved within the highly confined optical fields generated resonantly by the nano-antennas, i.e. in contact to the nano-structures. In these paper, We demonstrate the sensing capability of nano-antennas to their larger scale environment, well beyond their plasmonic confinement volume, leading to the concept of 'remote' (non contact) sensing on the nano-meter scale. On the basis of a bowtie-aperture nano-antenna (BNA) integrated at the apex of a SNOM fiber tip, we introduce an ultra-compact, move-able and background-free optical nano-sensor for the remote sensing of a silicon surface (up to distance of 300 nm). Sensitivity of the BNA to its large scale environment is high enough to expect the monitoring and control of the spacing between the nano-antenna and a silicon surface with sub-nano-meter accuracy. This work paves the way towards a new class of nano-po...

  14. MB3a Infrasound Sensor Evaluation.

    SciTech Connect (OSTI)

    Merchant, Bion J.; McDowell, Kyle D.

    2014-11-01T23:59:59.000Z

    Sandia National Laboratories has tested and evaluated a new infrasound sensor, the MB3a, manufactured by Seismo Wave. These infrasound sensors measure pressure output by a methodology developed by researchers at the French Alternative Energies and Atomic Energy Commission (CEA) and the technology was recently licensed to Seismo Wave for production and sales. The purpose of the infrasound sensor evaluation was to determine a measured sensitivity, transfer function, power, self-noise, dynamic range, seismic sensitivity, and self- calibration ability. The MB3a infrasound sensors are being evaluated for potential use in the International Monitoring System (IMS) of the Comprehensive Nuclear Test-Ban-Treaty Organization (CTBTO).

  15. Interpreting Remote Sensing NOx Measurements

    E-Print Network [OSTI]

    Denver, University of

    Interpreting Remote Sensing NOx Measurements Robert Slott, Consultant, Donald Stedman and Saj tailpipe emissions (HC, CO, NOx) are changing with time hUse remote sensing hMeasurements in at least 4 of the year at each location hUniform QC/QA and data reporting Paper # 2001-01-3640 #12;Remote Sensing

  16. Remote Implementation of Quantum Operations

    E-Print Network [OSTI]

    Susana F. Huelga; Martin B. Plenio; Guo-Yong Xiang; Jian Li}and Guang-Can Guo

    2005-09-08T23:59:59.000Z

    Shared entanglement allows, under certain conditions, the remote implementation of quantum operations. We revise and extend recent theoretical results on the remote control of quantum systems as well as experimental results on the remote manipulation of photonic qubits via linear optical elements.

  17. Vacuum Vessel Remote Handling

    E-Print Network [OSTI]

    and Remote Handling 4 Vacuum vessel functions · Plasma vacuum environment · Primary tritium confinement, incl ports 65 tonnes - Weight of torus shielding 100 tonnes · Coolant - Normal Operation Water, Handling 12 Vessel octant subassembly fab. (3) · Octant-to-octant splice joint requires double wall weld

  18. Local Vote Decision Fusion for Target Detection in Wireless Sensor Networks

    E-Print Network [OSTI]

    Michailidis, George

    1 Local Vote Decision Fusion for Target Detection in Wireless Sensor Networks Natallia Katenka by a wireless sensor network. Sensors acquire measurements emitted from the target that are corrupted by noise Wireless sensor networks are widely used for monitoring natural phenomena in space and over time, as well

  19. Remote Sensing Ayman F. Habib Introduction

    E-Print Network [OSTI]

    Habib, Ayman

    Remote Sensing Ayman F. Habib 1 Chapter 1 Introduction #12;Remote Sensing Ayman F. Habib 2 Overview · Remote sensing: definition. · Remote sensing versus photogrammetry. · Elements of remote sensing. · Key;Remote Sensing Ayman F. Habib 3 Overview · Acquisition platforms: ­ Historical overview. ­ Terrestrial

  20. A Resilient Condition Assessment Monitoring System

    SciTech Connect (OSTI)

    Humberto Garcia; Wen-Chiao Lin; Semyon M. Meerkov

    2012-08-01T23:59:59.000Z

    An architecture and supporting methods are presented for the implementation of a resilient condition assessment monitoring system that can adaptively accommodate both cyber and physical anomalies to a monitored system under observation. In particular, the architecture includes three layers: information, assessment, and sensor selection. The information layer estimates probability distributions of process variables based on sensor measurements and assessments of the quality of sensor data. Based on these estimates, the assessment layer then employs probabilistic reasoning methods to assess the plant health. The sensor selection layer selects sensors so that assessments of the plant condition can be made within desired time periods. Resilient features of the developed system are then illustrated by simulations of a simplified power plant model, where a large portion of the sensors are under attack.

  1. INSENS sensor system

    SciTech Connect (OSTI)

    Myers, D.W.; Baker, J.; Benzel, D.M.; Fuess, D.A.

    1993-09-29T23:59:59.000Z

    This paper describes an unattended ground sensor system that has been developed for the immigration and Naturalization Service (INS). The system, known as INSENS, was developed at the Lawrence Livermore National Laboratory for use by the United States Border Patrol. This system assists in the detection of illegal entry of aliens and contraband (illegal drugs, etc.) into the United States along its land borders. Key to the system is its flexible modular design which allows future software and hardware enhancements to the system without altering the fundamental architecture of the system. Elements of the system include a sensor system capable of processing signals from multiple directional probes, a repeater system, and a handheld monitor system. Seismic, passive infrared (PIR), and magnetic probes are currently supported. The design of the INSENS system elements and their performance are described.

  2. All-optical remote monitoring of propane gas using a 5-km-long, low-loss optical fiber link and an InGaP light-emitting diode in the 1. 68-. mu. m region

    SciTech Connect (OSTI)

    Chan, K.; Ito, H.; Inaba, H.

    1984-08-01T23:59:59.000Z

    We report the fully optical remote detection of low-level propane (C/sub 3/H/sub 8/) gas realized by the scheme based on a long distance, very low-loss silica optical fiber link connected to a compact absorption cell in conjunction with a high radiant InGaP light-emitting diode at 1.68 ..mu..m. For this application, the near-infrared absorption spectrum of propane was measured and studied to find very complicated bands around 1.69, 1.53, and 1.38 ..mu..m. This simple system, employing a 5-km-long silica optical fiber link, was demonstrated to be capable of achieving reproducibly the detection sensitivity less than 2.4 Torr for propane gas in air, i.e., about 14% of the lower explosion limit of propane density. This result verifies a large capability for major applications to various strategic points within the environment, such as industrial complexes as well as urban and residential areas, with considerably increased reliability and safety over the existing techniques.

  3. Packet personal radiation monitor

    DOE Patents [OSTI]

    Phelps, James E. (Knoxville, TN)

    1989-01-01T23:59:59.000Z

    A personal radiation monitor of the chirper type is provided for detecting ionizing radiation. A battery powered high voltage power supply is used to generate and apply a high voltage bias to a G-M tube radiation sensor. The high voltage is monitored by a low-loss sensing network which generates a feedback signal to control the high voltage power supply such that the high voltage bias is recharged to +500 VDC when the current pulses of the sensor, generated by the detection of ionizing radiation events, discharges the high voltage bias to +450 VDC. During the high voltage recharge period an audio transducer is activated to produce an audible "chirp". The rate of the "chirps" is controlled by the rate at which the high voltage bias is recharged, which is proportional to the radiation field intensity to which the sensor is exposed. The chirp rate sensitivity is set to be approximately 1.5 (chirps/min/MR/hr.). The G-M tube sensor is used in a current sensing mode so that the device does not paralyze in a high radiation field.

  4. Packet personal radiation monitor

    DOE Patents [OSTI]

    Phelps, J.E.

    1988-03-31T23:59:59.000Z

    A personal radiation monitor of the chirper type is provided for detecting ionizing radiation. A battery powered high voltage power supply is used to generate and apply a high voltage bias to a G-M tube radiation sensor. The high voltage is monitored by a low-loss sensing network which generates a feedback signal to control the high voltage power supply such that the high voltage bias is recharged to +500 VDC when the current pulses of the sensor, generated by the detection of ionizing radiatonevents, discharges the high voltage bias to +450 VDC. During the high voltage recharge period an audio transducer is activated to produce an audible ''chirp''. The rate of the ''chirps'' is controlled by the rate at which the high voltage bias is recharged, which is proportional to the radiation field intensity to which the sensor is exposed. The chirp rate sensitivity is set to be approximately 1.5 (chirps/min/MR/hr.). The G-M tube sensor is used in a current sensing mode so that the device does not paralyze in a high radiation field. 2 figs.

  5. Design Optimization of Structural Health Monitoring Systems

    SciTech Connect (OSTI)

    Flynn, Eric B. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2014-03-06T23:59:59.000Z

    Sensor networks drive decisions. Approach: Design networks to minimize the expected total cost (in a statistical sense, i.e. Bayes Risk) associated with making wrong decisions and with installing maintaining and running the sensor network itself. Search for optimal solutions using Monte-Carlo-Sampling-Adapted Genetic Algorithm. Applications include structural health monitoring and surveillance.

  6. A Prototype Wire Position Monitoring System

    SciTech Connect (OSTI)

    Wang, Wei

    2010-12-07T23:59:59.000Z

    The Wire Position Monitoring System (WPM) will track changes in the transverse position of LCLS Beam Position Monitors (BPMs) to 1{micro}m over several weeks. This position information will be used between applications of beam based alignment to correct for changes in component alignment. The WPM system has several requirements. The sensor range must be large enough so that precision sensor positioning is not required. The resolution needs to be small enough so that the signal can be used to monitor motion to 1{micro}m. The system must be stable enough so that system drift does not mimic motion of the component being monitored. The WPM sensor assembly consists of two parts, the magnetic sensor and an integrated lock-in amplifier. The magnetic sensor picks up a signal from the alternating current in a stretched wire. The voltage v induced in the sensor is proportional to the wire displacement from the center of the sensor. The integrated lock-in amplifier provides a DC output whose magnitude is proportional to the AC signal from the magnetic sensor. The DC output is either read on a digital voltmeter or digitized locally and communicated over a computer interface.

  7. Low-Cost, Passive UHF RFID Tag Antenna-Based Sensors for Pervasive Sensing Applications

    E-Print Network [OSTI]

    Bhattacharyya, Rahul

    2012-01-01T23:59:59.000Z

    In the future, large-scale sensor deployment would enable many areas such as infrastructure condition monitoring and supply chain management. However, many of today's wireless sensor technologies are still too expensive ...

  8. Three-dimensional and two-dimensional deployment analysis for underwater acoustic sensor networks q

    E-Print Network [OSTI]

    Pompili, Dario

    Three-dimensional and two-dimensional deployment analysis for underwater acoustic sensor networks q Accepted 23 July 2008 Available online 7 August 2008 Keywords: Underwater acoustic sensor networks data collection, pollution monitoring, offshore exploration, disaster prevention, assisted navigation

  9. Design and Verification of an Optical System to Interrogate Dermally-implanted Microparticle Sensors 

    E-Print Network [OSTI]

    Long, Ruiqi

    2012-07-16T23:59:59.000Z

    patient adherence to the recommended self-monitoring frequency, non-invasive/ minimally invasive glucose testing approaches are needed. Luminescent microparticle sensor is an attractive solution. For these sensors to be deployed in vivo, a matched optical...

  10. DAMAGE DETECTION METHODS ON WIND TURBINE BLADE TESTING WITH WIRED AND WIRELESS ACCELEROMETER SENSORS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    DAMAGE DETECTION METHODS ON WIND TURBINE BLADE TESTING WITH WIRED AND WIRELESS ACCELEROMETER turbine blade. We compare the data collected from the wireless sensors against wired sensors for nonstationary blade excitations. KEYWORDS : Structural Health Monitoring, Damage Detection, Wind Turbine

  11. Sensor Relocation with Mobile Sensors:Sensor Relocation with Mobile Sensors: Design,Design,

    E-Print Network [OSTI]

    Schindelhauer, Christian

    Sensor Relocation with Mobile Sensors:Sensor Relocation with Mobile Sensors: Design,Design, Implementation, and EvaluationImplementation, and Evaluation Jie Teng, Tim Bolbrock, Guohong Cao, and Tom La of Freiburg #12;OverviewOverview · Sensor networks · mobile sensor · mobile robot · Mote · sensor relocation

  12. Structural Monitoring System (SMS) and Visual System (VS)

    Broader source: Energy.gov [DOE]

    Axis Communications, Inc. has developed network ready, environmentally tolerant, low-light level camera-visual systems (VS) with built-in pan and tilt mechanisms that permit remote monitoring of...

  13. Autonomous Robot System for Sensor Characterization

    SciTech Connect (OSTI)

    David Bruemmer; Douglas Few; Frank Carney; Miles Walton; Heather Hunting; Ron Lujan

    2004-03-01T23:59:59.000Z

    This paper discusses an innovative application of new Markov localization techniques that combat the problem of odometry drift, allowing a novel control architecture developed at the Idaho National Engineering and Environmental Laboratory (INEEL) to be utilized within a sensor characterization facility developed at the Remote Sensing Laboratory (RSL) in Nevada. The new robotic capability provided by the INEEL will allow RSL to test and evaluate a wide variety of sensors including radiation detection systems, machine vision systems, and sensors that can detect and track heat sources (e.g. human bodies, machines, chemical plumes). By accurately moving a target at varying speeds along designated paths, the robotic solution allows the detection abilities of a wide variety of sensors to be recorded and analyzed.

  14. PEM fuel cell monitoring system

    DOE Patents [OSTI]

    Meltser, M.A.; Grot, S.A.

    1998-06-09T23:59:59.000Z

    Method and apparatus are disclosed for monitoring the performance of H{sub 2}--O{sub 2} PEM fuel cells. Outputs from a cell/stack voltage monitor and a cathode exhaust gas H{sub 2} sensor are corrected for stack operating conditions, and then compared to predetermined levels of acceptability. If certain unacceptable conditions coexist, an operator is alerted and/or corrective measures are automatically undertaken. 2 figs.

  15. Remote Sensing Laboratory - RSL

    ScienceCinema (OSTI)

    None

    2015-01-09T23:59:59.000Z

    One of the primary resources supporting homeland security is the Remote Sensing Laboratory, or RSL. The Laboratory creates advanced technologies for emergency response operations, radiological incident response, and other remote sensing activities. RSL emergency response teams are on call 24-hours a day, and maintain the capability to deploy domestically and internationally in response to threats involving the loss, theft, or release of nuclear or radioactive material. Such incidents might include Nuclear Power Plant accidents, terrorist incidents involving nuclear or radiological materials, NASA launches, and transportation accidents involving nuclear materials. Working with the US Department of Homeland Security, RSL personnel equip, maintain, and conduct training on the mobile detection deployment unit, to provide nuclear radiological security at major national events such as the super bowl, the Indianapolis 500, New Year's Eve celebrations, presidential inaugurations, international meetings and conferences, just about any event where large numbers of people will gather.

  16. Remote Sensing Laboratory - RSL

    SciTech Connect (OSTI)

    None

    2014-11-06T23:59:59.000Z

    One of the primary resources supporting homeland security is the Remote Sensing Laboratory, or RSL. The Laboratory creates advanced technologies for emergency response operations, radiological incident response, and other remote sensing activities. RSL emergency response teams are on call 24-hours a day, and maintain the capability to deploy domestically and internationally in response to threats involving the loss, theft, or release of nuclear or radioactive material. Such incidents might include Nuclear Power Plant accidents, terrorist incidents involving nuclear or radiological materials, NASA launches, and transportation accidents involving nuclear materials. Working with the US Department of Homeland Security, RSL personnel equip, maintain, and conduct training on the mobile detection deployment unit, to provide nuclear radiological security at major national events such as the super bowl, the Indianapolis 500, New Year's Eve celebrations, presidential inaugurations, international meetings and conferences, just about any event where large numbers of people will gather.

  17. Remote switch actuator

    DOE Patents [OSTI]

    Haas, Edwin Gerard; Beauman, Ronald; Palo, Jr., Stefan

    2013-01-29T23:59:59.000Z

    The invention provides a device and method for actuating electrical switches remotely. The device is removably attached to the switch and is actuated through the transfer of a user's force. The user is able to remain physically removed from the switch site obviating need for protective equipment. The device and method allow rapid, safe actuation of high-voltage or high-current carrying electrical switches or circuit breakers.

  18. QUANTIFYING FOREST ABOVEGROUND CARBON POOLS AND FLUXES USING MULTI-TEMPORAL LIDAR A report on field monitoring, remote sensing MMV, GIS integration, and modeling results for forestry field validation test to quantify aboveground tree biomass and carbon

    SciTech Connect (OSTI)

    Lee Spangler; Lee A. Vierling; Eva K. Stand; Andrew T. Hudak; Jan U.H. Eitel; Sebastian Martinuzzi

    2012-04-01T23:59:59.000Z

    Sound policy recommendations relating to the role of forest management in mitigating atmospheric carbon dioxide (CO{sub 2}) depend upon establishing accurate methodologies for quantifying forest carbon pools for large tracts of land that can be dynamically updated over time. Light Detection and Ranging (LiDAR) remote sensing is a promising technology for achieving accurate estimates of aboveground biomass and thereby carbon pools; however, not much is known about the accuracy of estimating biomass change and carbon flux from repeat LiDAR acquisitions containing different data sampling characteristics. In this study, discrete return airborne LiDAR data was collected in 2003 and 2009 across {approx}20,000 hectares (ha) of an actively managed, mixed conifer forest landscape in northern Idaho, USA. Forest inventory plots, established via a random stratified sampling design, were established and sampled in 2003 and 2009. The Random Forest machine learning algorithm was used to establish statistical relationships between inventory data and forest structural metrics derived from the LiDAR acquisitions. Aboveground biomass maps were created for the study area based on statistical relationships developed at the plot level. Over this 6-year period, we found that the mean increase in biomass due to forest growth across the non-harvested portions of the study area was 4.8 metric ton/hectare (Mg/ha). In these non-harvested areas, we found a significant difference in biomass increase among forest successional stages, with a higher biomass increase in mature and old forest compared to stand initiation and young forest. Approximately 20% of the landscape had been disturbed by harvest activities during the six-year time period, representing a biomass loss of >70 Mg/ha in these areas. During the study period, these harvest activities outweighed growth at the landscape scale, resulting in an overall loss in aboveground carbon at this site. The 30-fold increase in sampling density between the 2003 and 2009 did not affect the biomass estimates. Overall, LiDAR data coupled with field reference data offer a powerful method for calculating pools and changes in aboveground carbon in forested systems. The results of our study suggest that multitemporal LiDAR-based approaches are likely to be useful for high quality estimates of aboveground carbon change in conifer forest systems.

  19. Cooperative Monitoring Center Occasional Paper/11: Cooperative Environmental Monitoring in the Coastal Regions of India and Pakistan

    SciTech Connect (OSTI)

    Rajen, Gauray

    1999-06-01T23:59:59.000Z

    The cessation of hostilities between India and Pakistan is an immediate need and of global concern, as these countries have tested nuclear devices, and have the capability to deploy nuclear weapons and long-range ballistic missiles. Cooperative monitoring projects among neighboring countries in South Asia could build regional confidence, and, through gradual improvements in relations, reduce the threat of war and the proliferation of weapons of mass destruction. This paper discusses monitoring the trans-border movement of flow and sediment in the Indian and Pakistani coastal areas. Through such a project, India and Pakistan could initiate greater cooperation, and engender movement towards the resolution of the Sir Creek territorial dispute in their coastal region. The Joint Working Groups dialogue being conducted by India and Pakistan provides a mechanism for promoting such a project. The proposed project also falls within a regional framework of cooperation agreed to by several South Asian countries. This framework has been codified in the South Asian Seas Action Plan, developed by Bangladesh, India, Maldives, Pakistan and Sri Lanka. This framework provides a useful starting point for Indian and Pakistani cooperative monitoring in their trans-border coastal area. The project discussed in this paper involves computer modeling, the placement of in situ sensors for remote data acquisition, and the development of joint reports. Preliminary computer modeling studies are presented in the paper. These results illustrate the cross-flow connections between Indian and Pakistani coastal regions and strengthen the argument for cooperation. Technologies and actions similar to those suggested for the coastal project are likely to be applied in future arms control and treaty verification agreements. The project, therefore, serves as a demonstration of cooperative monitoring technologies. The project will also increase people-to-people contacts among Indian and Pakistani policy makers and scientists. In the perceptions of the general public, the project will crystallize the idea that the two countries share ecosystems and natural resources, and have a vested interest in increased collaboration.

  20. Intelligent Sensor Placement for Hot Server Detection in Data Centers

    E-Print Network [OSTI]

    Xing, Guoliang

    thermal monitoring with accurate location information, the cooling systems often use unnecessarily low--Data centers, servers, sensor placement, thermal monitoring, computational fluid dynamics, power management Ç 1. In addition to improving cooling energy efficiency, accurate thermal monitoring is more critical

  1. On Perimeter Coverage Scheduling in Wireless Sensor Networks

    E-Print Network [OSTI]

    Tam, Vincent W. L.

    is to monitor the whole target object as long as possible. In this paper, we first discuss the sufficient monitoring, target tracking, disaster management [1]. Traditionally, coverage problems concern whether- based schedule, we need to identify a set of sensors to monitor the target perimeter in ea

  2. Remote sensing for wind power potential: a prospector's handbook

    SciTech Connect (OSTI)

    Wade, J.E.; Maule, P.A.; Bodvarsson, G.; Rosenfeld, C.L.; Woolley, S.G.; McClenahan, M.R.

    1983-02-01T23:59:59.000Z

    Remote sensing can aid in identifying and locating indicators of wind power potential from the terrestrial, marine, and atmospheric environments (i.e.: wind-deformed trees, white caps, and areas of thermal flux). It is not considered as a tool for determining wind power potential. A wide variety of remotely sensed evidence is described in terms of the scale at which evidence of wind power can be identified, and the appropriate remote sensors for finding such evidence. Remote sensing can be used for regional area prospecting using small-scale imagery. The information from such small-scale imagery is most often qualitative, and if it is transitory, examination of a number of images to verify presistence of the feature may be required. However, this evidence will allow rapid screening of a large area. Medium-scale imagery provides a better picture of the evidence obtained from small-scale imagery. At this level it is best to use existing imagery. Criteria relating to land use, accessibility, and proximity of candidate sites to nearby transmission lines can also be effectively evaluated from medium-scale imagery. Large-scale imagery provides the most quantitative evidence of the strength of wind. Wind-deformed trees can be identified at a large number of sites using only a few hours in locally chartered aircraft. A handheld 35mm camera can adequately document any evidence of wind. Three case studies that employ remote sensing prospecting techniques are described. Based on remotely sensed evidence, the wind power potential in three geographically and climatically diverse areas of the United States is estimated, and the estimates are compared to actual wind data in those regions. In addition, the cost of each survey is discussed. The results indicate that remote sensing for wind power potential is a quick, cost effective, and fairly reliable method for screening large areas for wind power potential.

  3. Monitoring materials

    DOE Patents [OSTI]

    Orr, Christopher Henry (Calderbridge, GB); Luff, Craig Janson (Calderbridge, GB); Dockray, Thomas (Calderbridge, GB); Macarthur, Duncan Whittemore (Los Alamos, NM)

    2002-01-01T23:59:59.000Z

    The apparatus and method provide techniques for effectively implementing alpha and/or beta and/or gamma monitoring of items or locations as desired. Indirect alpha monitoring by detecting ions generated by alpha emissions, in conjunction with beta and/or gamma monitoring is provided. The invention additionally provides for screening of items prior to alpha monitoring using beta and/or gamma monitoring, so as to ensure that the alpha monitoring apparatus is not contaminated by proceeding direct to alpha monitoring of a heavily contaminated item or location. The invention provides additional versatility in the emission forms which can be monitored, whilst maintaining accuracy and avoiding inadvertent contamination.

  4. Performance Monitoring

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Optimization Performance Monitoring Performance Monitoring A redirector page has been set up without anywhere to redirect to. Last edited: 2014-08-25 14:37:27...

  5. Electrical condition monitoring method for polymers

    DOE Patents [OSTI]

    Watkins, Jr. Kenneth S. (Dahlonega, GA); Morris, Shelby J. (Hampton, VA); Masakowski, Daniel D. (Worcester, MA); Wong, Ching Ping (Duluth, GA); Luo, Shijian (Boise, ID)

    2010-02-16T23:59:59.000Z

    An electrical condition monitoring method utilizes measurement of electrical resistivity of a conductive composite degradation sensor to monitor environmentally induced degradation of a polymeric product such as insulated wire and cable. The degradation sensor comprises a polymeric matrix and conductive filler. The polymeric matrix may be a polymer used in the product, or it may be a polymer with degradation properties similar to that of a polymer used in the product. The method comprises a means for communicating the resistivity to a measuring instrument and a means to correlate resistivity of the degradation sensor with environmentally induced degradation of the product.

  6. Online Sensor Calibration Assessment in Nuclear Power Systems

    SciTech Connect (OSTI)

    Coble, Jamie B.; Ramuhalli, Pradeep; Meyer, Ryan M.; Hashemian, Hash

    2013-06-01T23:59:59.000Z

    Safe, efficient, and economic operation of nuclear systems (nuclear power plants, fuel fabrication and storage, used fuel processing, etc.) relies on transmission of accurate and reliable measurements. During operation, sensors degrade due to age, environmental exposure, and maintenance interventions. Sensor degradation can affect the measured and transmitted signals, including sensor failure, signal drift, sensor response time, etc. Currently, periodic sensor recalibration is performed to avoid these problems. Sensor recalibration activities include both calibration assessment and adjustment (if necessary). In nuclear power plants, periodic recalibration of safety-related sensors is required by the plant technical specifications. Recalibration typically occurs during refueling outages (about every 18 to 24 months). Non-safety-related sensors also undergo recalibration, though not as frequently. However, this approach to maintaining sensor calibration and performance is time-consuming and expensive, leading to unnecessary maintenance, increased radiation exposure to maintenance personnel, and potential damage to sensors. Online monitoring (OLM) of sensor performance is a non-invasive approach to assess instrument calibration. OLM can mitigate many of the limitations of the current periodic recalibration practice by providing more frequent assessment of calibration and identifying those sensors that are operating outside of calibration tolerance limits without removing sensors or interrupting operation. This can support extended operating intervals for unfaulted sensors and target recalibration efforts to only degraded sensors.

  7. Piezoelectric Wafer Active Sensors Structural Health Monitoring

    E-Print Network [OSTI]

    Giurgiutiu, Victor

    portions of the fuselage #12;Dr. Victor Giurgiutiu - Univ. South Carolina3 Motivation ­ American Airlines Giurgiutiu - Univ. South Carolina5 The Opportunity The Need: - Integrated Vehicle Health Management system Victor Giurgiutiu (jurjutzu) University of South Carolina #12;Motivation: Aloha Airlines Boeing 737 April

  8. Irrigation Monitoring with Soil Water Sensors

    E-Print Network [OSTI]

    Enciso, Juan; Porter, Dana; Peries, Xavier

    2007-01-19T23:59:59.000Z

    and another at 24 or 36 inches deep for deeper rooted field crops. n Use a 7 ?8-inch auger that has the same diameter as the tube to dig a hole to the desired depth (minus the height of the ceramic tip). Finish the pre-hole with a smaller diameter probe... widely used of all gravimetric methods for measuring soil water. A soil sample can be taken with an auger or tube sampler. It is placed in a container and weighed, and is dried in an oven at 105?C until a constant weight is obtained (normally after 24...

  9. Sensor Fusion for Nuclear Proliferation Activity Monitoring

    SciTech Connect (OSTI)

    Adel Ghanem, Ph D

    2007-03-30T23:59:59.000Z

    The objective of Phase 1 of this STTR project is to demonstrate a Proof-of-Concept (PoC) of the Geo-Rad system that integrates a location-aware SmartTag (made by ZonTrak) and a radiation detector (developed by LLNL). It also includes the ability to transmit the collected radiation data and location information to the ZonTrak server (ZonService). The collected data is further transmitted to a central server at LLNL (the Fusion Server) to be processed in conjunction with overhead imagery to generate location estimates of nuclear proliferation and radiation sources.

  10. Electrochemical NOx Sensor for Monitoring Diesel Emissions

    Broader source: Energy.gov (indexed) [DOE]

    oil consumption by about 1.5 million barrels per day. * Advantages of diesel technology: - Provides exceptional fuel economy - Completely compatible with biodiesel...

  11. Multipurpose Acoustic Sensor for Downhole Fluid Monitoring

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagement of the NationalPennsylvaniaTemperatureMultipurpose Acoustic

  12. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 37, NO. 3, MAY 1999 1671 Cryosphere Applications of NSCAT Data

    E-Print Network [OSTI]

    Long, David G.

    IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 37, NO. 3, MAY 1999 1671 Cryosphere covering Greenland and Antarctica add to the polar heat sink effect by their additional influence upon. Hence, monitoring of polar ice is of particular interest to the remote sensing and climate change

  13. Corrosion Monitoring System

    SciTech Connect (OSTI)

    Dr. Russ Braunling

    2004-10-31T23:59:59.000Z

    The Corrosion Monitoring System (CMS) program developed and demonstrated a continuously on-line system that provides real-time corrosion information. The program focused on detecting pitting corrosion in its early stages. A new invention called the Intelligent Ultrasonic Probe (IUP) was patented on the program. The IUP uses ultrasonic guided waves to detect small defects and a Synthetic Aperture Focusing Technique (SAFT) algorithm to provide an image of the pits. Testing of the CMS demonstrated the capability to detect pits with dimensionality in the sub-millimeter range. The CMS was tested in both the laboratory and in a pulp and paper industrial plant. The system is capable of monitoring the plant from a remote location using the internet.

  14. Signal Acquisition/Conditioning for Automated Data Collection during Structural Health Monitoring with Piezoelectric Wafer

    E-Print Network [OSTI]

    Giurgiutiu, Victor

    1 Signal Acquisition/Conditioning for Automated Data Collection during Structural Health Monitoring sensors (PWAS) is emerging as an effective and powerful technique for structural health monitoring (SHM words: Structural health monitoring, piezoelectric wafer active sensors, pitch-catch, pulse-echo, phased

  15. Remote state preparation: arbitrary remote control of photon polarization Nicholas A. Peters,1

    E-Print Network [OSTI]

    Kwiat, Paul

    Remote state preparation: arbitrary remote control of photon polarization Nicholas A. Peters,1 University, Kirksville, MO 63501 (Dated: October 22, 2004) We experimentally demonstrate the first remote, we remotely prepare arbitrary states at two wavelengths. Further, we derive theoretical bounds

  16. Title: Development of Plasmon Assisted Quantum DOT Sensors Multispectral and Polarization Selective Imaging

    E-Print Network [OSTI]

    Johnson, Eric E.

    Title: Development of Plasmon Assisted Quantum DOT Sensors for Multispectral and Polarization in plasmonic nanostructures. Spectral and polarization sensitive EO sensors provide unique remote sensing of subwavelength plasmon-polariton assisted quantum dot (QD) photodetectors (PDs) for pixel-level spectral

  17. REMOTE AND RURAL ENTERPRISE (RARE)

    E-Print Network [OSTI]

    Viglas, Anastasios

    in remote central Australia is establishing a commercial aquaponics enterprise, a social entrepreneur, hospitality and horticulture. The current focus is on a commercial aquaponics enterprise and a cultural

  18. Sensors and Automated Analyzers for Radionuclides

    SciTech Connect (OSTI)

    Grate, Jay W.; Egorov, Oleg B.

    2003-03-27T23:59:59.000Z

    The production of nuclear weapons materials has generated large quantities of nuclear waste and significant environmental contamination. We have developed new, rapid, automated methods for determination of radionuclides using sequential injection methodologies to automate extraction chromatographic separations, with on-line flow-through scintillation counting for real time detection. This work has progressed in two main areas: radionuclide sensors for water monitoring and automated radiochemical analyzers for monitoring nuclear waste processing operations. Radionuclide sensors have been developed that collect and concentrate radionuclides in preconcentrating minicolumns with dual functionality: chemical selectivity for radionuclide capture and scintillation for signal output. These sensors can detect pertechnetate to below regulatory levels and have been engineered into a prototype for field testing. A fully automated process monitor has been developed for total technetium in nuclear waste streams. This instrument performs sample acidification, speciation adjustment, separation and detection in fifteen minutes or less.

  19. Expert operator preferences in remote manipulator control systems

    SciTech Connect (OSTI)

    Sundstrom, E. [Human Machine Interfaces, Inc., Knoxville, TN (United States); Draper, J.V. [Oak Ridge National Lab., TN (United States); Fausz, A.; Woods, H. [Univ. of Tennessee, Knoxville, TN (United States)

    1995-06-01T23:59:59.000Z

    This report describes a survey of expert remote manipulator operators designed to identify features of control systems related to operator efficiency and comfort. It provides information for designing the control center for the Single-Shell Tank Waste Retrieval Manipulator System (TWRMS) Test Bed, described in a separate report. Research questions concerned preferred modes of control, optimum work sessions, sources of operator fatigue, importance of control system design features, and desired changes in control rooms. Participants comprised four expert remote manipulator operators at Oak Ridge National Laboratory, who individually have from 9 to 20 years of experience using teleoperators. The operators had all used rate and position control, and all preferred bilateral (force-reflecting) position control. They reported spending an average of 2.75 h in control of a teleoperator system during a typical shift. All were accustomed to working in a crew of two and alternating control and support roles in 2-h rotations in an 8-h shift. Operators reported that fatigue in using remote manipulator systems came mainly from watching TV monitors and making repetitive motions. Three of four experienced symptoms, including headaches and sore eyes, wrists, and back. Of 17 features of control rooms rated on importance, highest ratings went to comfort and support provided by the operator chair, location of controls, location of video monitors, video image clarity, types of controls, and control modes. When asked what they wanted to change, operators said work stations designed for comfort; simpler, lighter hand-controls; separate controls for each camera; better placement of remote camera; color monitors; and control room layouts that support crew interaction. Results of this small survey reinforced the importance of ergonomic factors in remote manipulation.

  20. Estimating biomass on CRP pastureland: A comparison of remote sensing techniques

    E-Print Network [OSTI]

    Lawrence, Rick L.

    Estimating biomass on CRP pastureland: A comparison of remote sensing techniques Tucker F. Porter Accepted 31 January 2014 Available online 21 February 2014 Keywords: Biomass estimation model NDVI Bandwise regression Crop circle sensor Landsat imagery a b s t r a c t Biomass from land enrolled in the Conservation