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1

Title: Autonomous Aerial Sensors for Wind Power Meteorology- A Pre-Project  

E-Print Network (OSTI)

Abstract (max. 2000 char.): Autonomous Aerial Sensors, i.e. meteorological sensors mounted on Unmanned Aerial Systems UAS, can characterise the atmospheric flow in and around wind farms. We instrumented three planes, a helicopter and a lighter-than-air LTA system to fly one week together in a well-instrumented wind farm, partly with nanosynchronised sensors (time stamped with about 100 ns global accuracy). Between bankruptcy of a partner, denied overflight rights at the main test location, denied Civil Aviation Authorities permits at the alternative location, stolen planes, and crashed UAS we managed to collect data at a wind farm in Lolland and on an atmospheric campaign in France. Planning of an offshore campaign using the developed techniques is underway. ISSN 0106-2840 ISBN 978-87-550-3945-2 Contract no.:

Gregor Giebel (ed; Uwe Schmidt Paulsen; Jens Bange; La Cour-harbo; Joachim Reuder; Stephanie Mayer; Aline Van; Der Kroonenberg; John Mølgaard; Gregor Giebel; Uwe Schmidt Paulsen; Jens Bange; Anders La Cour-harbo; Joachim Reuder; Stephanie Mayer

2012-01-01T23:59:59.000Z

2

Active Sensors | Open Energy Information  

Open Energy Info (EERE)

Page Page Edit with form History Facebook icon Twitter icon » Active Sensors Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Active Sensors Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Remote Sensing Techniques Exploration Sub Group: Active Sensors Parent Exploration Technique: Remote Sensing Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: Detect fault and ground movement, delineate faults, create high-resolution DEMS, quantify fault kinemaics, develop lineament maps, Geophysical Monitoring Hydrological: Can give indications about subsurface geothermal fluid flow Thermal: Dictionary.png Active Sensors: Sensors that emit their own source of energy then measure the

3

A Decentralized Dynamic Sensor Activation Protocol for Chemical Sensor Networks  

Science Conference Proceedings (OSTI)

Due to the significant amount of energy consumed by chemical sensors for sensing, reducing sensing activity is critical for improving the lifespan of chemical sensor networks. In this paper, we consider a simple decentralized dynamic sensor activation ...

Shanika Karunasekera; Champake Mendis; Alex Skvortsov; Ajith Gunatilaka

2010-07-01T23:59:59.000Z

4

Aerial Photography | Open Energy Information  

Open Energy Info (EERE)

Aerial Photography Aerial Photography Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Aerial Photography Details Activities (10) Areas (9) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Remote Sensing Techniques Exploration Sub Group: Passive Sensors Parent Exploration Technique: Passive Sensors Information Provided by Technique Lithology: Stratigraphic/Structural: map structures/faults Hydrological: map surface water features Thermal: if photos taken in winter snow cover, can map thermal anomalies Cost Information Low-End Estimate (USD): 100.3610,036 centUSD 0.1 kUSD 1.0036e-4 MUSD 1.0036e-7 TUSD / sq. mile Median Estimate (USD): 240.5424,054 centUSD 0.241 kUSD 2.4054e-4 MUSD 2.4054e-7 TUSD / sq. mile High-End Estimate (USD): 2,360.00236,000 centUSD

5

Simulation models for photogate active pixel sensor  

Science Conference Proceedings (OSTI)

The constant reduction in the transistors sizes for the design and the integration of smart sensors on chip requires accurate simulations of electrical characteristics. To this end, new simulation models of photogate active pixel sensor for CMOS imagers ... Keywords: modelling and simulation, optoelectronic devices, photogate active pixel sensor

B. Casadei; C. Dufaza; L. Martin

2005-07-01T23:59:59.000Z

6

Category:Active Sensors | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Active Sensors Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Active Sensors page? For detailed information on exploration techniques, click here. Category:Active Sensors Add.png Add a new Active Sensors Technique Subcategories This category has only the following subcategory. R [×] Radar‎ 5 pages Pages in category "Active Sensors" The following 2 pages are in this category, out of 2 total. L LiDAR R Radar Retrieved from "http://en.openei.org/w/index.php?title=Category:Active_Sensors&oldid=689848"

7

Employing Active Aerial Acoustics to Increase Detections of the Critically Endangered North Pacific Right Whale  

E-Print Network (OSTI)

, Seattle, WA 98115-6349, USA METHODS Aerial surveys were conducted within the Bering Sea critical habitat" calls recorded from sonobuoys deployed during the 2009 aerial survey. This figure represents flights in the direction of the bearing. Table 1. Aerial survey effort in 2009 including successful sonobuoy deployments

8

Aerial Photography At Truckhaven Area (Layman Energy Associates...  

Open Energy Info (EERE)

Aerial Photography At Truckhaven Area (Layman Energy Associates, 2006) Exploration Activity Details Location Truckhaven Area Exploration Technique Aerial Photography Activity Date...

9

Adaptive algorithms for sensor activation in renewable energy based sensor systems  

Science Conference Proceedings (OSTI)

Upcoming sensor networks would be deployed with sensing devices with energy harvesting capabilities from renewable energy sources such as solar power. A key research question in such sensor systems is to maximize the asymptotic event detection probability ... Keywords: Adaptive algorithms, Energy harvesting sensor systems, Sensor activation, Temporal correlations

Neeraj Jaggi, Sreenivas Madakasira, Sandeep Reddy Mereddy, Ravi Pendse

2013-06-01T23:59:59.000Z

10

Segmenting sensor data for activity monitoring in smart environments  

Science Conference Proceedings (OSTI)

Within a smart environment, sensors have the ability to perceive changes of the environment itself and can therefore be used to infer high-level information such as activity behaviours. Sensor events collected over a period of time may contain several ... Keywords: Activity detection, Evidential modelling, Smart environments, Time series sensor segmentation

Xin Hong; Chris D. Nugent

2013-03-01T23:59:59.000Z

11

Sensor networks for high-resolution monitoring of volcanic activity  

Science Conference Proceedings (OSTI)

We developed and deployed a wireless sensor network for monitoring seismoacoustic activity at Volcán Reventador, Ecuador. Wireless sensor networks are a new technology and our group is among the first to apply them to monitoring volcanoes. The ...

Matt Welsh; Geoff Werner-Allen; Konrad Lorincz; Omar Marcillo; Jeff Johnson; Mario Ruiz; Jonathan Lees

2005-10-01T23:59:59.000Z

12

Aerial Photography (Nannini, 1986) | Open Energy Information  

Open Energy Info (EERE)

Aerial Photography (Nannini, 1986) Aerial Photography (Nannini, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Aerial Photography (Nannini, 1986) Exploration Activity Details Location Unspecified Exploration Technique Aerial Photography Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes Tectonic studies, through air photointerpretation and subsequent ground surveys of the main features, represent the next step in such an analysis. Photo analysis and ground surveys can identify regional distensive faults that formed after compressive orogenic activity. Quaternary formations and very recent debris intersected by faults are indicative of a neotectonic activity. References Raffaello Nannini (1986) Some Aspects Of Exploration In Non-Volcanic

13

Oblique Aerial & Ground Visible Band & Thermographic Imaging | Open Energy  

Open Energy Info (EERE)

Oblique Aerial & Ground Visible Band & Thermographic Imaging Oblique Aerial & Ground Visible Band & Thermographic Imaging Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Oblique Aerial & Ground Visible Band & Thermographic Imaging Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Remote Sensing Techniques Exploration Sub Group: Passive Sensors Parent Exploration Technique: Passive Sensors Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Thermal: Cost Information Low-End Estimate (USD): 400.0040,000 centUSD 0.4 kUSD 4.0e-4 MUSD 4.0e-7 TUSD / Subject Median Estimate (USD): 450.0045,000 centUSD 0.45 kUSD 4.5e-4 MUSD 4.5e-7 TUSD / Subject High-End Estimate (USD): 6,000.00600,000 centUSD

14

Active time scheduling for rechargeable sensor networks  

Science Conference Proceedings (OSTI)

Recent progress in energy harvesting technologies made it possible to build sensor networks with rechargeable nodes which target an indefinitely long operation. In these networks, the goal of energy management is to allocate the available energy such ... Keywords: Energy harvesting, Rechargeable, Sensor network

Volodymyr Pryyma; Damla Turgut; Ladislau Bölöni

2010-03-01T23:59:59.000Z

15

Standard CMOS active pixel image sensors for multimedia applications  

Science Conference Proceedings (OSTI)

The task of image acquisition is completely dominated by CCD-based sensors fabricated on specialized process lines. These devices provide an essentially passive means of detecting photons and moving image data across chip. We argue that line widths in ... Keywords: 1024 pixel, CMOS active pixel image sensors, CMOS integrated circuits, color filter array, document capture, gain, image sensors, multimedia, multimedia systems, single chip video cameras, transistors, video cameras

A. Dickinson; B. Ackland; E. -S. Eid; D. Inglis; E. R. Fossum

1995-03-01T23:59:59.000Z

16

AERIAL RADIOLOGICAL SURVEYS  

SciTech Connect

Measuring terrestrial gamma radiation from airborne platforms has proved to be a useful method for characterizing radiation levels over large areas. Over 300 aerial radiological surveys have been carried out over the past 25 years including U.S. Department of Energy (DOE) sites, commercial nuclear power plants, Formerly Utilized Sites Remedial Action Program/Uranium Mine Tailing Remedial Action Program (FUSRAP/UMTRAP) sites, nuclear weapons test sites, contaminated industrial areas, and nuclear accident sites. This paper describes the aerial measurement technology currently in use by the Remote Sensing Laboratory (RSL) for routine environmental surveys and emergency response activities. Equipment, data-collection and -analysis methods, and examples of survey results are described.

Proctor, A.E.

1997-06-09T23:59:59.000Z

17

Active pixel sensors for X-ray astronomy  

E-Print Network (OSTI)

An active pixel sensor array, APS-1, has been fabricated for the purpose of scientific x-ray detection. This thesis presents the results of testing the device. Alternate design architectures are explored. Recommendations ...

Cohen, Matthew (Matthew L.)

2005-01-01T23:59:59.000Z

18

The Sandia MEMS passive shock sensor : FY07 maturation activities.  

SciTech Connect

This report describes activities conducted in FY07 to mature the MEMS passive shock sensor. The first chapter of the report provides motivation and background on activities that are described in detail in later chapters. The second chapter discusses concepts that are important for integrating the MEMS passive shock sensor into a system. Following these two introductory chapters, the report details modeling and design efforts, packaging, failure analysis and testing and validation. At the end of FY07, the MEMS passive shock sensor was at TRL 4.

Houston, Jack E.; Blecke, Jill; Mitchell, John Anthony; Wittwer, Jonathan W.; Crowson, Douglas A.; Clemens, Rebecca C.; Walraven, Jeremy Allen; Epp, David S.; Baker, Michael Sean

2008-08-01T23:59:59.000Z

19

Evaluation function of sensor position for activity recognition considering wearability  

Science Conference Proceedings (OSTI)

In the wearable computing environment, a computer provides many kinds of services by using the values from wearable sensors to recognize the user's movements or situations. In the research on activity recognition, accelerometers are attached on the user's ... Keywords: accelerometer, activity recognition, wearability

Kazuya Murao, Haruka Mogari, Tsutomu Terada, Masahiko Tsukamoto

2013-09-01T23:59:59.000Z

20

Aerial Photography At Pilgrim Hot Springs Area (Prakash, Et Al...  

Open Energy Info (EERE)

search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Aerial Photography At Pilgrim Hot Springs Area (Prakash, Et Al., 2010) Exploration Activity Details Location...

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Aerial Photography At Dixie Valley Geothermal Field Area (Blackwell...  

Open Energy Info (EERE)

search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Aerial Photography At Dixie Valley Geothermal Field Area (Blackwell, Et Al., 2003) Exploration Activity Details...

22

Aerial Photography At Dixie Valley Geothermal Field Area (Wesnousky...  

Open Energy Info (EERE)

search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Aerial Photography At Dixie Valley Geothermal Field Area (Wesnousky, Et Al., 2003) Exploration Activity Details...

23

Deploying a wireless sensor network on an active volcano  

E-Print Network (OSTI)

Augmenting heavy and power-hungry data collection equipment with lighter, smaller wireless sensor network nodes leads to faster,larger deployments. Arrays comprising dozens of wireless sensor nodes are now possible,allowing scientific studies that aren’t feasible with traditional instrumentation. Designing sensor networks to support volcanic studies requires addressing the high data rates and high data fidelity these studies demand. The authors ’ sensor-network application for volcanic data collection relies on triggered event detection and reliable data retrieval to meet bandwidth and data-quality demands. Wireless sensor networks — in which numerous resource-limited nodes are linked via low-bandwidth wireless radios — have been the focus of intense research during the past few years. Since their conception, they’ve excited a range of scientific communities because of their potential to facilitate data acquisition and scientific studies. Collaborations between computer scientists and other domain scientists have produced networks that can record data at a scale and resolution not previously possible. Taking this progress one step further, wireless sensor networks can potentially advance the pursuit of geophysical studies of volcanic activity. Two years ago, our team of computer scientists at Harvard University began collaborating with volcanologists at the University of North Carolina, the University of New Hampshire, and the Instituto

Konrad Lorincz; Matt Welsh; Omar Marcillo; Jeff Johnson; Mario Ruiz; Jonathan Lees

2006-01-01T23:59:59.000Z

24

A Comparative Analysis and Experimental Study on Wireless Aerial and Underwater Acoustic  

E-Print Network (OSTI)

A Comparative Analysis and Experimental Study on Wireless Aerial and Underwater Acoustic underwater acoustic sensor networks through the use of audio hardware built in to the sensor modules. In this paper, we explore the potential of the acoustic communication system for both aerial and underwater

Lopes, Cristina Videira

25

Geothermal Energy Resource Investigations, Chocolate Mountains Aerial  

Open Energy Info (EERE)

Investigations, Chocolate Mountains Aerial Investigations, Chocolate Mountains Aerial Gunnery Range, Imperial Valley, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Geothermal Energy Resource Investigations, Chocolate Mountains Aerial Gunnery Range, Imperial Valley, California Details Activities (5) Areas (1) Regions (0) Abstract: The US Navy's Geothermal Program Office (GPO), has conducted geothermal exploration in the Chocolate Mountains Aerial Gunnery Range (CMAGR) since the mid-1970s. At this time, the focus of the GPO had been on the area to the east of the Hot Mineral Spa KGRA, Glamis and areas within the Chocolate Mountains themselves. Using potential field geophysics, mercury surveys and geologic mapping to identify potential anomalies related to recent hydrothermal activity. After a brief hiatus starting in

26

Aerial Photography At Nevada Test And Training Range Area (Sabin...  

Open Energy Info (EERE)

Nevada Test And Training Range Area (Sabin, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Aerial Photography At Nevada Test And...

27

Deploying a Wireless Sensor Network on an Active Volcano  

Science Conference Proceedings (OSTI)

Augmenting heavy and power-hungry data collection equipment with lighter, smaller wireless sensor network nodes leads to faster, larger deployments. Arrays comprising dozens of wireless sensor nodes are now possible, allowing scientific studies that ... Keywords: wireless sensor networks, sensor network applications, sensor network nodes, volcano research

Geoffrey Werner-Allen; Konrad Lorincz; Matt Welsh; Omar Marcillo; Jeff Johnson; Mario Ruiz; Jonathan Lees

2006-03-01T23:59:59.000Z

28

ARM Aerial Facility  

NLE Websites -- All DOE Office Websites (Extended Search)

govSitesAerial Facility govSitesAerial Facility AAF Information Proposal Process Science (PDF) Baseline Instruments Campaign Instruments Instrumentation Workshop 2008 AAF Fact Sheet G-1 Fact Sheet Images Field Campaigns AAF Campaigns 2007 - UAV Campaigns 1993 - 2006, 2015 Other Aircraft Campaigns 1993 - 2010 AAF Contacts Rickey Petty DOE AAF Program Director Beat Schmid Technical Director ARM Aerial Facility Numerous instrumented aircraft participated in CLASIC, a cross-disciplinary interagency research effort. Numerous instrumented aircraft participated in CLASIC, a cross-disciplinary interagency research effort. As an integral measurement capability of the ARM Climate Research Facility, the ARM Aerial Facility (AAF) provides airborne measurements required to answer science questions proposed by the ARM Science Team and the external

29

Heat-activated Plasmonic Chemical Sensors for Harsh Environments  

NLE Websites -- All DOE Office Websites (Extended Search)

cnse.albany.edu cnse.albany.edu Heat-activated Plasmonic Chemical Sensors for Harsh Environments Dr. Michael A. Carpenter College of NanoScale Science and Engineering Energy & Environmental Technology Applications Center University at Albany - SUNY Dr. Sang-Hyun Oh Department of Electrical and Computer Engineering University of Minnesota-Twin Cities 6/11/13 ! Oh group, University of Minnesota Carpenter Group, CNSE cnse.albany.edu Harsh Environment Chemical Sensors Nanocomposite Materials * Optical analysis of Au SPR bands * YSZ, TiO 2 , CeO 2 matrix materials * 500-800°C operating environment * SOFC, Jet engines, turbines * CO, H 2 , NO x , R x S Goals of Research are Two-Fold 1. Develop prototype nanorod materials for use in next generation sensing devices

30

Activity recognition with end-user sensor installation in the home  

E-Print Network (OSTI)

In this work, a system for recognizing activities in the home setting that uses a set of small and simple state-change sensors, machine learning algorithms, and electronic experience sampling is introduced. The sensors are ...

Rockinson, Randy Joseph

2008-01-01T23:59:59.000Z

31

Multi-sensor activation for temporally correlated event monitoring with renewable energy sources  

Science Conference Proceedings (OSTI)

Future sensor networks would comprise sensing devices with energy-harvesting capabilities from renewable energy sources, such as solar power. This paper focuses on design of efficient algorithms for multi-sensor activation to optimise overall ...

Neeraj Jaggi; Koushik Kar

2011-06-01T23:59:59.000Z

32

Error Sensor Placement for Active Control of an Axial Cooling Fan.  

E-Print Network (OSTI)

??Recent experimental achievements in active noise control (ANC) for cooling fans have used near-field error sensors whose locations are determined according to a theoretical condition… (more)

Shafer, Benjamin M 1979-

2007-01-01T23:59:59.000Z

33

Layout techniques for radiation hardening of standard CMOS active pixel sensors  

Science Conference Proceedings (OSTI)

This paper presents a radiation hardened Active Pixel Sensor implemented in a standard 0.35?m CMOS process. The integrated circuit is composed of a 64x64 pixel matrix with a 25?m pixel pitch and has four different pixel architectures. There ... Keywords: CMOS, active pixel sensor, radiation hardeness

Leo Huf Campos Braga; Suzana Domingues; Milton F. Rocha; Leonardo Bruno Sá; Fernando Campos; Filipe V. Santos; Antonio Carneiro Mesquita; Mário Vaz Silva; Jacobus W. Swart

2007-09-01T23:59:59.000Z

34

The ARM Aerial Facility  

NLE Websites -- All DOE Office Websites (Extended Search)

ARM Aerial Facility ARM Aerial Facility in the Biomass Burn Observation Project (BBOP) 1 Beat Schmid, Technical Director Pacific Northwest National Laboratory Richland, WA Aircraft Technical Information Length: 19.4 m Wingspan: 23.9 m Height: 7.1 m Cabin space: 15.3 m 2 External probes (PMS cans): 8 Maximum gross weight: 16,330 kg Maximum Endurance: 9.5 hours Maximum Range: 4000 km Endurance with full payload: 4-5 hours Crew capacity: 7 max, 2 pilots + 3-5 scientists Cabin payload: 1,900 kg Research Power: 700A @ 28 VDC (incl. 85A @ 115 VAC, 60 Hz) Ceiling: 7.6 km G-1 (BMI owned, ARM base funded, PNNL based and managed, for the science community) AAF G-1 Plan 2013-17 Intensive Airborne Research in Amazonia (IARA) Manaus, Brazil PI: Scot Martin (Harvard)

35

Aerial Scene Recognition using Efficient Sparse Representation  

SciTech Connect

Advanced scene recognition systems for processing large volumes of high-resolution aerial image data are in great demand today. However, automated scene recognition remains a challenging problem. Efficient encoding and representation of spatial and structural patterns in the imagery are key in developing automated scene recognition algorithms. We describe an image representation approach that uses simple and computationally efficient sparse code computation to generate accurate features capable of producing excellent classification performance using linear SVM kernels. Our method exploits unlabeled low-level image feature measurements to learn a set of basis vectors. We project the low-level features onto the basis vectors and use simple soft threshold activation function to derive the sparse features. The proposed technique generates sparse features at a significantly lower computational cost than other methods~\\cite{Yang10, newsam11}, yet it produces comparable or better classification accuracy. We apply our technique to high-resolution aerial image datasets to quantify the aerial scene classification performance. We demonstrate that the dense feature extraction and representation methods are highly effective for automatic large-facility detection on wide area high-resolution aerial imagery.

Cheriyadat, Anil M [ORNL

2012-01-01T23:59:59.000Z

36

Aerial Measuring System in Japan  

SciTech Connect

The U.S. Department of Energy National Nuclear Security Agency’s Aerial Measuring System deployed personnel and equipment to partner with the U.S. Air Force in Japan to conduct multiple aerial radiological surveys. These were the first and most comprehensive sources of actionable information for U.S. interests in Japan and provided early confirmation to the government of Japan as to the extent of the release from the Fukushima Daiichi Nuclear Power Generation Station. Many challenges were overcome quickly during the first 48 hours; including installation and operation of Aerial Measuring System equipment on multiple U.S. Air Force Japan aircraft, flying over difficult terrain, and flying with talented pilots who were unfamiliar with the Aerial Measuring System flight patterns. These all combined to make for a dynamic and non-textbook situation. In addition, the data challenges of the multiple and on-going releases, and integration with the Japanese government to provide valid aerial radiological survey products that both military and civilian customers could use to make informed decisions, was extremely complicated. The Aerial Measuring System Fukushima response provided insight in addressing these challenges and gave way to an opportunity for the expansion of the Aerial Measuring System’s mission beyond the borders of the US.

Lyons, C., Colton, D. P.

2012-05-01T23:59:59.000Z

37

Aerial surveying of the world's largest leatherback turtle rookery: A more effective methodology for large-scale monitoring  

E-Print Network (OSTI)

Aerial surveying of the world's largest leatherback turtle rookery: A more effective methodology are monitored in great detail by foot. In this study we use nationwide aerial surveying interfaced with ground­86%) of leatherback turtle activities recorded during aerial surveys (n = 8) occurred within protected areas (345 km

Exeter, University of

38

Sensors in the wild: exploring electrodermal activity in child-robot interaction  

Science Conference Proceedings (OSTI)

Recent advances in biosensor technology enabled the appearance of commercial wireless sensors that can measure electrodermal activity (EDA) in user's everyday settings. In this paper, we investigate the potential benefits of measuring EDA to better understand ... Keywords: affect recognition, children, electrodermal activity, social robots

Iolanda Leite; Rui Henriques; Carlos Martinho; Ana Paiva

2013-03-01T23:59:59.000Z

39

Aerial Photography At Dixie Valley Geothermal Field Area (Blackwell, Et  

Open Energy Info (EERE)

Et Et Al., 2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Aerial Photography At Dixie Valley Geothermal Field Area (Blackwell, Et Al., 2003) Exploration Activity Details Location Dixie Valley Geothermal Field Area Exploration Technique Aerial Photography Activity Date Usefulness not indicated DOE-funding Unknown Notes Geologic mapping from air photos in some places clearly located the structures in the valley and hence is very site specific. References D. D. Blackwell, K. W. Wisian, M. C. Richards, Mark Leidig, Richard Smith, Jason McKenna (2003) Geothermal Resource Analysis And Structure Of Basin And Range Systems, Especially Dixie Valley Geothermal Field, Nevada Retrieved from "http://en.openei.org/w/index.php?title=Aerial_Photography_At_Dixie_Valley_Geothermal_Field_Area_(Blackwell,_Et_Al.,_2003)&oldid=388817

40

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

E-Print Network (OSTI)

applications. The electrical and mechanical power analysis at the PWAS structure interface indicates all on the tuning effects. Second, we studied the PWAS receiver structural interface acoustic and electrical energy1 Modeling of Power and Energy Transduction of Embedded Piezoelectric Wafer Active Sensors

Giurgiutiu, Victor

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Participatory sensing in public spaces: activating urban surfaces with sensor probes  

Science Conference Proceedings (OSTI)

Recent convergence between low-cost technology, artform and political discourse presents a new design space for enabling public participation and expression. We explore non-experts' use of place-based, modular sensors to activate, author and provoke ... Keywords: participatory sensing, public spaces, urban probes

Stacey Kuznetsov; Eric Paulos

2010-08-01T23:59:59.000Z

42

West Coast Aerial Sardine Survey Application for Exempted Fishing Permit  

E-Print Network (OSTI)

West Coast Aerial Sardine Survey 2010 Application for Exempted Fishing Permit Applicants ........................................................................................5 A. Coastwide Summer Aerial Sardine Survey (July-August, 2010) ....................6 I. Survey Design ­ Coastwide Summer Aerial Sardine Survey ...............................6 Stage 1: Aerial Transect

43

Mapping Pine Mortality by Aerial Photography,  

E-Print Network (OSTI)

State Forest Service, for use of aerial survey data; Fred P. Haifl, William T. McClelland, and Michael SMapping Pine Mortality by Aerial Photography, Umstead State Park, North Carolina United States Carolina State Highway Department, for aerial photography by his staff; Coleman Doggett, North Carolina

Standiford, Richard B.

44

Aerial Radiation Measurements from the Fukushima Dai-ichi Nuclear Power Plant Accident  

SciTech Connect

This document is a slide show type presentation concerning DOE and Aerial Measuring System (AMS) activities and results with respect to assessing the consequences of the releases from the Fukushima Dai-ichi Nuclear Power Plant. These include ground monitoring and aerial monitoring.

Guss, P. P.

2012-07-16T23:59:59.000Z

45

Learning Scene Categories from High Resolution Satellite Image for Aerial Video Analysis  

SciTech Connect

Automatic scene categorization can benefit various aerial video processing applications. This paper addresses the problem of predicting the scene category from aerial video frames using a prior model learned from satellite imagery. We show that local and global features in the form of line statistics and 2-D power spectrum parameters respectively can characterize the aerial scene well. The line feature statistics and spatial frequency parameters are useful cues to distinguish between different urban scene categories. We learn the scene prediction model from highresolution satellite imagery to test the model on the Columbus Surrogate Unmanned Aerial Vehicle (CSUAV) dataset ollected by high-altitude wide area UAV sensor platform. e compare the proposed features with the popular Scale nvariant Feature Transform (SIFT) features. Our experimental results show that proposed approach outperforms te SIFT model when the training and testing are conducted n disparate data sources.

Cheriyadat, Anil M [ORNL

2011-01-01T23:59:59.000Z

46

Aerial Radiation Monitoring Data over Sea Near Fukushima | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Aerial Radiation Monitoring Data over Sea Near Fukushima Aerial Radiation Monitoring Data over Sea Near Fukushima Aerial Radiation Monitoring Data over Sea Near Fukushima The enclosed package represents radiation data collected over the ocean with the fixed-wing aircraft (C-12) on April 5th, April 18th, and May 9th. The data were collected with an array of large thallium activated sodium iodide (NaI(T)) crystals and associated readout electronics to produce time and location referenced measurements. These results represent raw data that have been validated. They do not include any further evaluation. AMS C12 Sea Data.csv AMS C12 Sea Data Dictionary.pdf AMS C12 Sea Data.kmz More Documents & Publications Social Security Number Reduction Project 2011 - Federal Viewpoint Survey Reports Appendices for the Basis Document

47

Acquisition and registration of aerial video imagery of urban traffic  

SciTech Connect

The amount of information available about urban traffic from aerial video imagery is extremely high. Here we discuss the collection of such video imagery from a helicopter platform with a low-cost sensor, and the post-processing used to correct radial distortion in the data and register it. The radial distortion correction is accomplished using a Harris model. The registration is implemented in a two-step process, using a globally applied polyprojective correction model followed by a fine scale local displacement field adjustment. The resulting cleaned-up data is sufficiently well-registered to allow subsequent straight-forward vehicle tracking.

Loveland, Rohan C [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

48

Treaty on Open Skies sensor technologies with potential international safeguards applications  

SciTech Connect

The Treaty on Open Skies is a precedent-setting agreement that allows signatory states to fly aircraft over each other`s territory with sensor systems. The purpose of the Treaty is to improve confidence and security with respect to military activities of the signatories. This paper reviews the sensor technology that is currently allowed by the Treaty on Open Skies and potential future sensor technology. The Treaty on Open Skies does have provisions to allow for the improvement of the technology of the current sensor systems and for the proposal of new sensors after a period of time. This can occur only after the Treaty has been ratified and has entered into force. If this regime was to be used for other than Treaty on Open Skies applications some modifications to the allowed sensor technology should be examined. This paper presents some ideas on potential improvements to existing allowed sensor technology as well as some suggested new advanced sensor systems that would be useful for future potential monitoring of safeguard`s related activities. This paper addresses advanced imaging sensors and non-imaging sensors for potential use in aerial remote sensing roles that involve international data sharing.

Sandoval, M.B.

1996-12-01T23:59:59.000Z

49

Spatial Feature Evaluation for Aerial Scene Analysis  

Science Conference Proceedings (OSTI)

High-resolution aerial images are becoming more readily available, which drives the demand for robust, intelligent and efficient systems to process increasingly large amounts of image data. However, automated image interpretation still remains a challenging problem. Robust techniques to extract and represent features to uniquely characterize various aerial scene categories is key for automated image analysis. In this paper we examined the role of spatial features to uniquely characterize various aerial scene categories. We studied low-level features such as colors, edge orientations, and textures, and examined their local spatial arrangements. We computed correlograms representing the spatial correlation of features at various distances, then measured the distance between correlograms to identify similar scenes. We evaluated the proposed technique on several aerial image databases containing challenging aerial scene categories. We report detailed evaluation of various low-level features by quantitatively measuring accuracy and parameter sensitivity. To demonstrate the feature performance, we present a simple query-based aerial scene retrieval system.

Swearingen, Thomas S [ORNL] [ORNL; Cheriyadat, Anil M [ORNL] [ORNL

2013-01-01T23:59:59.000Z

50

Aerial Measuring System | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Measuring System | National Nuclear Security Administration Measuring System | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Aerial Measuring System Home > About Us > Our Programs > Emergency Response > Responding to Emergencies > Consequence Management > Aerial Measuring System Aerial Measuring System AMS Logo NNSA's Aerial Measuring System (AMS) provides specialized airborne

51

An aerial radiological survey of the Nevada Test Site  

SciTech Connect

A team from the Remote Sensing Laboratory conducted an aerial radiological survey of the US Department of Energy's Nevada Test Site including three neighboring areas during August and September 1994. The survey team measured the terrestrial gamma radiation at the Nevada Test Site to determine the levels of natural and man-made radiation. This survey included the areas covered by previous surveys conducted from 1962 through 1993. The results of the aerial survey showed a terrestrial background exposure rate that varied from less than 6 microroentgens per hour (mR/h) to 50 mR/h plus a cosmic-ray contribution that varied from 4.5 mR/h at an elevation of 900 meters (3,000 feet) to 8.5 mR/h at 2,400 meters (8,000 feet). In addition to the principal gamma-emitting, naturally occurring isotopes (potassium-40, thallium-208, bismuth-214, and actinium-228), the man-made radioactive isotopes found in this survey were cobalt-60, cesium-137, europium-152, protactinium-234m an indicator of depleted uranium, and americium-241, which are due to human actions in the survey area. Individual, site-wide plots of gross terrestrial exposure rate, man-made exposure rate, and americium-241 activity (approximating the distribution of all transuranic material) are presented. In addition, expanded plots of individual areas exhibiting these man-made contaminations are given. A comparison is made between the data from this survey and previous aerial radiological surveys of the Nevada Test Site. Some previous ground-based measurements are discussed and related to the aerial data. In regions away from man-made activity, the exposure rates inferred from the gamma-ray measurements collected during this survey agreed very well with the exposure rates inferred from previous aerial surveys.

Hendricks, T J; Riedhauser, S R

1999-12-01T23:59:59.000Z

52

Aerial survey finds no increase in radioactivity for Los Alamos...  

NLE Websites -- All DOE Office Websites (Extended Search)

Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Aerial survey finds no increase in radioactivity ... Aerial survey finds no increase in...

53

An Attempt To Use Aerial Gamma-Ray Spectrometry Results In Petrochemical  

Open Energy Info (EERE)

Attempt To Use Aerial Gamma-Ray Spectrometry Results In Petrochemical Attempt To Use Aerial Gamma-Ray Spectrometry Results In Petrochemical Assessments Of The Volcanic And Plutonic Associations Of Central Anatolia (Turkey) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: An Attempt To Use Aerial Gamma-Ray Spectrometry Results In Petrochemical Assessments Of The Volcanic And Plutonic Associations Of Central Anatolia (Turkey) Details Activities (0) Areas (0) Regions (0) Abstract: Volcanic and magmatic rocks of Central Anatolia are fairly rich in radioelement concentrations. The aerial gamma-ray spectrometric survey data, gathered for the purpose of radioactive mineral exploration were utilized as an additional tool for the petrochemical classification of the volcanic and magmatics rocks and their environments. The survey data on

54

Vehicle and Person Tracking in Aerial Videos  

Science Conference Proceedings (OSTI)

This paper presents two tracking approaches from Sarnoff Corporation to detect moving vehicles and person in the videos taken from aerial platform or plane. In the first approach, we combine layer segmentation approach with background stabilization and ...

Jiangjian Xiao; Changjiang Yang; Feng Han; Hui Cheng

2008-01-01T23:59:59.000Z

55

Studying Altocumulus with Ice Virga Using Ground-Based Active and Passive Remote Sensors  

NLE Websites -- All DOE Office Websites (Extended Search)

Studying Altocumulus with Ice Virga Using Ground-Based Studying Altocumulus with Ice Virga Using Ground-Based Active and Passive Remote Sensors Z. Wang Goddard Earth Science and Technology Center University of Maryland, Baltimore County College Park, Maryland Z. Wang, D. N. Whiteman, and B. B. Demoz Mesoscale Atmospheric Processes Branch National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt, Maryland K. Sassen Geophysical Institute University of Alaska Fairbanks, Alaska Introduction Clouds not only play crucial roles in regulating the Earth-atmosphere system energy budget, but also the atmospheric hydrological cycle. The impact of a cloud system strongly depends on the cloud microphysical properties and its vertical extent (Stephens et al. 1990). Although clouds can contain only

56

Aerial Photography At Coso Geothermal Area (1968-1971) | Open Energy  

Open Energy Info (EERE)

1971) 1971) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Aerial Photography At Coso Geothermal Area (1968-1971) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Aerial Photography Activity Date 1968 - 1971 Usefulness useful DOE-funding Unknown Exploration Basis Fumarolic and hot springs activity Notes Color photography has the greatest utility in locating areas of presently active thermal fluid leakage and in facilitating geologic interpretation References Koenig, J.B.; Gawarecki, S.J.; Austin, C.F. (1 February 1972) Remote sensing survey of the Coso geothermal area, Inyo county, California. Technical publication 1968--1971 Retrieved from "http://en.openei.org/w/index.php?title=Aerial_Photography_At_Coso_Geothermal_Area_(1968-1971)&oldid=473677"

57

Application of piezoelectric active-sensors for SHM of wind turbine blades  

DOE Green Energy (OSTI)

The goal of this study is to characterize the dynamic response of a CX-100 wind blade and the design parameters of SHM techniques as they apply to wind turbine blades, and to investigate the performance of high-frequency active-sensing SHM techniques, including lamb wave and frequency response functions, as a way to monitor the health of a wind turbine blade. The results of the dynamic characterization will be used to validate a numerical model and understand the effect of structural damage on the performance of the blades. The focus of SHM study is to assess and compare the performance of each method in identifying incipient damage, with a special consideration given to field deployability. For experiments, a 9-m CX-100 blade was used. Overall, the methods yielded sufficient damage detection to warrant further investigation into field deployment. This paper also summarizes the SHM results of a full-scale fatigue test of 9-m CX-100 blade using piezoelectric active-sensors.

Park, Gyuhae [Los Alamos National Laboratory; Taylor, Stuart G. [Los Alamos National Laboratory; Farinholt, Kevin M [Los Alamos National Laboratory; Farrar, Charles R [Los Alamos National Laboratory

2010-10-04T23:59:59.000Z

58

A Tracker for the Mu3e Experiment based on High-Voltage Monolithic Active Pixel Sensors  

E-Print Network (OSTI)

The Mu3e experiment searches for the lepton flavour violating decay mu+ -> e+e-e+, aiming for a branching fraction sensitivity of 10^-16. This requires an excellent momentum resolution for low energy electrons, high rate capability and a large acceptance. In order to minimize multiple scattering, the amount of material has to be as small as possible. These challenges can be met with a tracker built from high-voltage monolithic active pixel sensors (HV-MAPS), which can be thinned to 50 um and which incorporate the complete read-out electronics on the sensor chip. To further minimise material, the sensors are supported by a mechanical structure built from 25 um thick Kapton foil and cooled with gaseous helium.

Berger, Niklaus; Bachmann, Sebastian; Kiehn, Moritz; Peri?, Ivan; Perrevoort, Ann-Kathrin; Philipp, Raphael; Schöning, André; Stumpf, Kevin; Wiedner, Dirk; Windelband, Bernd; Zimmermann, Marco

2013-01-01T23:59:59.000Z

59

A Tracker for the Mu3e Experiment based on High-Voltage Monolithic Active Pixel Sensors  

E-Print Network (OSTI)

The Mu3e experiment searches for the lepton flavour violating decay mu+ -> e+e-e+, aiming for a branching fraction sensitivity of 10^-16. This requires an excellent momentum resolution for low energy electrons, high rate capability and a large acceptance. In order to minimize multiple scattering, the amount of material has to be as small as possible. These challenges can be met with a tracker built from high-voltage monolithic active pixel sensors (HV-MAPS), which can be thinned to 50 um and which incorporate the complete read-out electronics on the sensor chip. To further minimise material, the sensors are supported by a mechanical structure built from 25 um thick Kapton foil and cooled with gaseous helium.

Niklaus Berger; Heiko Augustin; Sebastian Bachmann; Moritz Kiehn; Ivan Peri?; Ann-Kathrin Perrevoort; Raphael Philipp; André Schöning; Kevin Stumpf; Dirk Wiedner; Bernd Windelband; Marco Zimmermann

2013-09-30T23:59:59.000Z

60

Aerial radiation survey at a military range.  

SciTech Connect

Aberdeen Proving Ground (APG) is currently listed on the Superfund National Priorities List because of past waste handling practices at 13 'study areas.' Concern has been expressed that anthropogenic radioisotopes may have been released at some of the study areas, with the potential of posing health risks to human or ecological receptors. This concern was addressed by thoroughly searching archival records, sampling and analyzing environmental media, and performing an aerial radiation survey. The aerial radiation survey techniques employed have been used over all U.S. Department of Energy and commercial reactor sites. Use of the Aerial Measurement System (AMS) allowed investigators to safely survey areas where surveys using hand-held instruments would be difficult to perform. In addition, the AMS delivered a full spectrum of the measured gamma radiation, thereby providing a means of determining which radioisotopes were present at the surface. As a quality check on the aerial measurements, four ground truth measurements were made at selected locations and compared with the aerial data for the same locations. The results of the survey revealed no evidence of surface radioactive contamination. The measured background radiation, including the cosmic contribution, ranged from 4 to 11 {mu}R/h.

Williams, G. P.; Martino, L. E.; Wrobel, J.; Environmental Assessment; U.S. Army Aberdeen Proving Ground

2001-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Autonomous aerial refueling of UAVS utilizing a vision based navigation system  

E-Print Network (OSTI)

The major technological obstacle to be overcome for practical and reliable autonomous probe-and-drogue aerial refueling is obtaining accurate relative position and attitude measurements during the docking phase. An integrated controller-sensor-navigation system for this task must be robust and possess good disturbance rejection properties. Previous attempts to solve this problem have used video servoing with pattern recognition algorithms and the differential Global Positioning System. This thesis seeks to determine the feasibility of autonomous aerial refueling by developing a robust docking controller and integrating it with the relative position and attitude measurements from a novel Vision-based Navigation (VisNav) sensor. VisNav accurately determines the line of sight vector between a positioning sensing diode and a target configured with multiple light emitting diode beacons. A study is conducted to determine the best number and placement of the beacons on the drogue and the best location to mount the sensor on an Unmanned Air Vehicle (UAV). Optimal Nonzero Set Point and optimal Command Generator Tracker controllers are developed and used to simulate six degree-of-freedom docking maneuvers using dynamical system models of a UAV and a refueling drogue. Test cases for stationary and moving drogues in atmospheric turbulence are evaluated in terms of docking position errors, control effort, control rate, and quadratic cost. Simulation results demonstrate that a Proportional Integral Filter Command Generator Tracker controller, coupled with the VisNav sensor and navigation system, provides a viable candidate solution to the autonomous aerial refueling problem. The beacon lights can be placed in the location of lights currently on the drogue, and the sensor can be placed at the base of the refueling probe on the UAV.

Kimmett, Jennifer Jones

2002-01-01T23:59:59.000Z

62

Aerial Photography At Nevada Test And Training Range Area (Sabin, Et Al.,  

Open Energy Info (EERE)

2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Aerial Photography At Nevada Test And Training Range Area (Sabin, Et Al., 2004) Exploration Activity Details Location Nevada Test And Training Range Area Exploration Technique Aerial Photography Activity Date Usefulness not indicated DOE-funding Unknown Notes We re-examined most of the area using newer orthophotography, SPOT, and Thematic Mapper images, and identified several areas of possible late Quaternary surface faulting (Figure 3). References A. E. Sabin, J. D. Walker, J. Unruh, F. C. Monastero (2004) Toward The Development Of Occurrence Models For Geothermal Resources In The Western United States Retrieved from "http://en.openei.org/w/index.php?title=Aerial_Photography_At_Nevada_Test_And_Training_Range_Area_(Sabin,_Et_Al.,_2004)&oldid=386843

63

Aerial survey of Bay Area continues through Saturday | National...  

NLE Websites -- All DOE Office Websites (Extended Search)

Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Aerial survey of Bay Area continues through Saturday Aerial survey of Bay Area continues...

64

Activity recognition in the home setting using simple and ubiquitous sensors  

E-Print Network (OSTI)

During the past several years, researchers have demonstrated that when new wireless sensors are placed in the home environment, data collected from them can be used by software to automatically infer context, such as the ...

Munguia Tapia, Emmanuel, 1978-

2003-01-01T23:59:59.000Z

65

iCalm: Wearable Sensor and Network Architecture for Wirelessly Communicating and Logging Autonomic Activity  

E-Print Network (OSTI)

Widespread use of affective sensing in healthcare applications has been limited due to several practical factors, such as lack of comfortable wearable sensors, lack of wireless standards, and lack of low-power affordable ...

Dobson, Kelly

66

Aerial Photography At Hawthorne Area (Lazaro, Et Al., 2010) | Open Energy  

Open Energy Info (EERE)

Aerial Photography At Hawthorne Area (Lazaro, Et Al., Aerial Photography At Hawthorne Area (Lazaro, Et Al., 2010) Exploration Activity Details Location Hawthorne Area Exploration Technique Aerial Photography Activity Date Usefulness not indicated DOE-funding Unknown Notes The Navy GPO has contracted the University of Nevada Reno Great Basin for Center for Geothermal Research to conduct additional field exploration at HAD. The tasks required by the Navy range from field mapping and water sampling; detailed mapping, to low angle sun photo interpretations, trenching, to 3-D seismic interpretations and modeling. References Michael Lazaro, Chris Page, Andy Tiedeman, Andrew Sabin, Steve Bjornstad, Steve Alm, David Meade, Jeff Shoffner, Kevin Mitchell, Bob Crowder, Greg Halsey (2010) United States Department Of The Navy Geothermal

67

Aerial image classification using structural texture similarity  

Science Conference Proceedings (OSTI)

There is an increasing need for algorithms for automatic analysis of remote sensing images and in this paper we address the problem of semantic classification of aerial images. For the task at hand we propose and evaluate local structural texture descriptor ...

Vladimir Risojevic; Zdenka Babic

2011-12-01T23:59:59.000Z

68

Deployable aerial communication networks: challenges for futuristic applications  

Science Conference Proceedings (OSTI)

Aerial (or airborne) telecommunications have been investigated for three decades through the design and the evaluation of stratospheric platforms able to offer multiple types of wireless services. More recently though, a wide range of lower altitude ... Keywords: aerial networks, high altitude platforms, low altitude platforms, unmanned aerial vehicles

Laurent Reynaud; Tinku Rasheed

2012-10-01T23:59:59.000Z

69

A Hierarchical and Contextual Model for Aerial Image Parsing  

Science Conference Proceedings (OSTI)

In this paper we present a hierarchical and contextual model for aerial image understanding. Our model organizes objects (cars, roofs, roads, trees, parking lots) in aerial scenes into hierarchical groups whose appearances and configurations are determined ... Keywords: Aerial images, Bayesian inference, Hierarchical models, Image understanding, Scene-level context, Statistical learning, Swendsen-Wang clustering

Jake Porway; Qiongchen Wang; Song Chun Zhu

2010-06-01T23:59:59.000Z

70

Bowhead Whale Aerial Survey Project (BWASP) Status Update in 2009  

E-Print Network (OSTI)

Bowhead Whale Aerial Survey Project (BWASP) Status Update in 2009 Janet Clarke1, Cynthia Christman2 Corporation, Buckley, WA, janet.clarke@saic.com ABSTRACT The Bowhead Whale Aerial Survey Project (BWASP) has farther north. METHODS Aerial surveys were flown in a de Havilland Twin Otter with 6-8 hours range

71

AERIAL SURVEYS FOR MANATEES AND DOLPHINS IN WESTERN PENINSULAR FLORIDA  

E-Print Network (OSTI)

AERIAL SURVEYS FOR MANATEES AND DOLPHINS IN WESTERN PENINSULAR FLORIDA A. BLAIR IRVINE,! JOHN E. CAFFIN,2 AND HOWARD I. KOCHMAN! ABSTRACT Low altitude aerial surveys were conducted to count West Indian and Campbell 1978). Aerial surveys indicate that bottlenose dolphins are also well dispersed in coastal waters

72

West Coast Aerial Sardine Survey Application for Exempted Fishing Permit  

E-Print Network (OSTI)

West Coast Aerial Sardine Survey 2011 Application for Exempted Fishing Permit Applicant Scientific Field Leader: Ryan Howe May 9, 2011 1 #12;West Coast Aerial Sardine Survey Application Requirements ................... 51 2 #12;West Coast Aerial Sardine Survey Application for Exempted Fishing

73

Aerial surveys for sea turtles in North Carolina inshore waters  

E-Print Network (OSTI)

Aerial surveys for sea turtles in North Carolina inshore waters Sheryan P. Epperly Joanne Braun Service, NOAA Beaufort, NC 285 J6 Abstract.-Aerial surveys for sea turtles conducted in Core SoundI., in press, a). As part of the same study, aerial surveys were employed over a 3-yr period to provide

74

An aerial radiological survey of the project Rio Blanco and surrounding area  

SciTech Connect

A team from the Remote Sensing Laboratory in Las Vegas, Nevada, conducted an aerial radiation survey of the area surrounding ground zero of Project Rio Blanco in the northwestern section of Colorado in June 1993. The object of the survey was to determine if there were man-made radioisotopes on or near the surface resulting from a nuclear explosion in 1972. No indications of surface contamination were found. A search for the cesium-137 radioisotope was negative. The Minimum Detectable Activity for cesium-137 is presented for several detection probabilities. The natural terrestrial exposure rates in units of Roentgens per hour were mapped and are presented in the form of a contour map over-laid on an aerial photograph. A second team made independent ground-based measurements in four places within the survey area. The average agreement of the ground-based with aerial measurements was six percent.

Singman, L.V.

1994-11-01T23:59:59.000Z

75

TIP Project Brief 080011 Self Powered Wireless Sensor ...  

Science Conference Proceedings (OSTI)

... AE sensors will be complemented with active piezoelectric sensors that ... These elements include development of the energy harvesting system, the ...

2011-11-07T23:59:59.000Z

76

Sensor readout detector circuit  

DOE Patents (OSTI)

A sensor readout detector circuit is disclosed that is capable of detecting sensor signals down to a few nanoamperes or less in a high (microampere) background noise level. The circuit operates at a very low standby power level and is triggerable by a sensor event signal that is above a predetermined threshold level. A plurality of sensor readout detector circuits can be formed on a substrate as an integrated circuit (IC). These circuits can operate to process data from an array of sensors in parallel, with only data from active sensors being processed for digitization and analysis. This allows the IC to operate at a low power level with a high data throughput for the active sensors. The circuit may be used with many different types of sensors, including photodetectors, capacitance sensors, chemically-sensitive sensors or combinations thereof to provide a capability for recording transient events or for recording data for a predetermined period of time following an event trigger. The sensor readout detector circuit has applications for portable or satellite-based sensor systems. 6 figs.

Chu, D.D.; Thelen, D.C. Jr.

1998-08-11T23:59:59.000Z

77

Sensor readout detector circuit  

DOE Patents (OSTI)

A sensor readout detector circuit is disclosed that is capable of detecting sensor signals down to a few nanoamperes or less in a high (microampere) background noise level. The circuit operates at a very low standby power level and is triggerable by a sensor event signal that is above a predetermined threshold level. A plurality of sensor readout detector circuits can be formed on a substrate as an integrated circuit (IC). These circuits can operate to process data from an array of sensors in parallel, with only data from active sensors being processed for digitization and analysis. This allows the IC to operate at a low power level with a high data throughput for the active sensors. The circuit may be used with many different types of sensors, including photodetectors, capacitance sensors, chemically-sensitive sensors or combinations thereof to provide a capability for recording transient events or for recording data for a predetermined period of time following an event trigger. The sensor readout detector circuit has applications for portable or satellite-based sensor systems.

Chu, Dahlon D. (Albuquerque, NM); Thelen, Jr., Donald C. (Bozeman, MT)

1998-01-01T23:59:59.000Z

78

NNSA's Aerial Measuring System at Rickenbacker Field in Ohio...  

NLE Websites -- All DOE Office Websites (Extended Search)

Aerial Measuring System at Rickenbacker Field in Ohio | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear...

79

NNSA to Conduct Aerial Radiation Assessment Survey in New Jersey...  

National Nuclear Security Administration (NNSA)

412 helicopter, operated by the Remote Sensing Laboratory Aerial Measuring System from Joint Base Andrews, will be equipped with radiation sensing technology. The helicopter will...

80

NNSA to Conduct Aerial Radiation Monitoring Survey over Baltimore...  

National Nuclear Security Administration (NNSA)

occurring background radiation. A twin-engine Bell 412 helicopter, operated by the Remote Sensing Laboratory Aerial Measuring System from Joint Base Andrews, will be...

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

NNSA to Conduct Aerial Radiation Monitoring Survey over Baltimore...  

NLE Websites -- All DOE Office Websites (Extended Search)

Conduct Aerial Radiation Monitoring Survey over Baltimore Jan. 15-16 | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering...

82

Building model reconstruction from lidar data and aerial photographs.  

E-Print Network (OSTI)

??The objective of this research is to reconstruct 3D building models from imagery and LIDAR data. The images used are stereo aerial photographs with known… (more)

Ma, Ruijin

2005-01-01T23:59:59.000Z

83

Aerial tracking of elongated objects in rural environments  

Science Conference Proceedings (OSTI)

In this paper, a new approach to finding and tracking various land cover boundaries such as rivers, agricultural fields, channels and roads for use in visual navigation system of an unmanned aerial vehicle is presented. We use a combination of statistical ... Keywords: Aerial video processing, Boundary tracking, Colour and texture segmentation, Robust estimation, UAV visual navigation system

B. Majidi; A. Bab-Hadiashar

2008-10-01T23:59:59.000Z

84

An Aerial Radiological Survey of the Portsmouth Gaseous Diffusion Plant and Surrounding Area, Portsmouth, Ohio  

SciTech Connect

An aerial radiological survey was conducted over the 16 square-mile (~41 square-kilometer) area surrounding the Portsmouth Gaseous Diffusion Plant. The survey was performed in August 2007 utilizing a large array of helicopter mounted sodium iodide detectors. The purpose of the survey was to update the previous radiological survey levels of the environment and surrounding areas of the plant. A search for a missing radium-226 source was also performed. Implied exposure rates, man-made activity, and excess bismuth-214 activity, as calculated from the aerial data are presented in the form of isopleth maps superimposed on imagery of the surveyed area. Ground level and implied aerial exposure rates for nine specific locations are compared. Detected radioisotopes and their associated gamma ray exposure rates were consistent with those expected from normal background emitters. At specific plant locations described in the report, man-made activity was consistent with the operational histories of the location. There was no spectral activity that would indicate the presence of the lost source.

Namdoo Moon

2007-12-01T23:59:59.000Z

85

Car Detection in Low Resolution Aerial Images  

E-Print Network (OSTI)

We present a system to detect passenger cars in aerial images wherecars appear as small objects. We pose this as a 3D object recognition problem to account for the variation in viewpoint and the shadow. We startedfrom psychological tests to find important features for human detection of cars. Based on these observations, we selected the boundary of the car body, the boundary of the front windshield, and the shadow as the features. Some of these features are affected by the intensity of the car and whether or not there is a shadow along it. This information is represented in the structure of the Bayesian network that we use to integrate all features. Experiments show very promising results even on some very challenging images. 1

Tao Zhao; Ram Nevatia

2001-01-01T23:59:59.000Z

86

Surface Microstructure Extraction from Multiple Aerial Images  

E-Print Network (OSTI)

In this paper we present a system that recovers building facet images from multiple source images and, as a first step towards detailed analysis of microstructures, extracts windows from walls. The system employs a sophisticated multi-image texture mapping technique to eliminate the corrupting effects of shadows and occlusions and to find a "best piece representation" of each facet. The system is model-driven, providing a context-based environment for microstructure analysis. The window extraction module focuses attention on wall facets, attempting to extract the 2-D window patterns attached to the walls using an oriented region growing technique. High-level knowledge is incorporated to simplify the computation of symbolic window extraction. The algorithms are typically useful in urban sites. Experiments show successful applications of this approach to site model refinement. Keywords: microstructure extraction, model refinement, texture mapping, aerial imagery, image understanding 1 I...

Xiaoguang Wang; Robert T. Collins; Jeff Dehart

1997-01-01T23:59:59.000Z

87

Underwater wireless ad hoc sensor networks are aimed at remotely monitoring various aquatic activities, such as marine biological and zoological lives, geological changes, and  

E-Print Network (OSTI)

Abstract Underwater wireless ad hoc sensor networks are aimed at remotely monitoring various aquatic activities, such as marine biological and zoological lives, geological changes, and underwater quality of service is more difficult in underwater net- works due to large underwater propagation delay

Kumar, M. Jagadesh

88

Review: The impact of agricultural activities on water quality: A case for collaborative catchment-scale management using integrated wireless sensor networks  

Science Conference Proceedings (OSTI)

The challenge of improving water quality is a growing global concern, typified by the European Commission Water Framework Directive and the United States Clean Water Act. The main drivers of poor water quality are economics, poor water management, agricultural ... Keywords: Agricultural activities, Catchment, Collaborative, Water quality monitoring and management, Wireless sensor networks

Huma Zia, Nick R. Harris, Geoff V. Merrett, Mark Rivers, Neil Coles

2013-08-01T23:59:59.000Z

89

Mitigating container security risk using real-time monitoring with active Radio Frequency Identification and sensors  

E-Print Network (OSTI)

The global village in which we live enables increased trade and commerce across regions but also brings a complicated new set of challenges such as terrorist activity, human and drug smuggling and theft in foreign or ...

Schlesinger, Adam Ian

2005-01-01T23:59:59.000Z

90

Continuous Water Vapor Profiles from Operational Ground—Based Active and Passive Remote Sensors  

Science Conference Proceedings (OSTI)

The Atmospheric Radiation Measurement program's Southern Great Plains Cloud and Radiation Testbed site central facility near Lamont, Oklahoma, offers unique operational water vapor profiling capabilities, including active and passive remote ...

D. D. Turner; W. F. Feltz; R. A. Ferrare

2000-06-01T23:59:59.000Z

91

An aerial radiological survey of the Pilgrim Station Nuclear Power Plant and surrounding area, Plymouth, Massachusetts  

SciTech Connect

Terrestrial radioactivity surrounding the Pilgrim Station Nuclear Power Plant was measured using aerial radiolog- ical survey techniques. The purpose of this survey was to document exposure rates near the plant and to identify unexpected, man-made radiation sources within the survey area. The surveyed area included land areas within a three-mile radius of the plant site. Data were acquired using an airborne detection system that employs sodium iodide, thallium-activated detectors. Exposure rate and photopeak counts were computed from these data and plotted on aerial photographs of the survey area. Several ground-based exposure measurements were made for comparison with the,aerial survey results. Exposure rates in areas surrounding the plant site varied from 6 to 10 microroentgens per hour, with exposure rates below 6 microroentgens per hour occurring over bogs and marshy areas. Man-made radiation was found to be higher than background levels at the plant site. Radation due to nitrogen-1 6, which is produced in the steam cycle of a boiling-water reactor, was the primaty source of activity found at the plant site. Cesium-137 activity at levels slightly above those expected from natural fallout was found at isolated locations inland from the plant site. No other detectable sources of man-made radioactivity were found.

Proctor, A.E.

1997-06-01T23:59:59.000Z

92

Aerial Righting, Directed Aerial Descent, and Maneuvering in the Evolution of Flight in Birds  

E-Print Network (OSTI)

use of a force sensor and 3D printer. Chapter 4 Disturbancewere then output to a 3D printer (ProJet HD 3000; 3D Systems

Evangelista, Dennis Jose

2013-01-01T23:59:59.000Z

93

Passive Sensors | Open Energy Information  

Open Energy Info (EERE)

Passive Sensors Passive Sensors Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Passive Sensors Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Remote Sensing Techniques Exploration Sub Group: Passive Sensors Parent Exploration Technique: Remote Sensing Techniques Information Provided by Technique Lithology: Mineral maps can be used to show the presence of hydrothermal minerals and mineral assemblages Stratigraphic/Structural: Map structures/faults and regional strain rates Hydrological: Map surface water features Thermal: Map surface temperatures Dictionary.png Passive Sensors: Sensors that measure energy which is naturally available in the environment. Other definitions:Wikipedia Reegle

94

Aerial Thermal Infrared Mapping Of The Waimangu-Waiotapu Geothermal Region,  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Aerial Thermal Infrared Mapping Of The Waimangu-Waiotapu Geothermal Region, New Zealand - M A Mongillo, Geothermics, 23(5-6), 1994, Pp 511-526 Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Aerial Thermal Infrared Mapping Of The Waimangu-Waiotapu Geothermal Region, New Zealand - M A Mongillo, Geothermics, 23(5-6), 1994, Pp 511-526 Details Activities (0) Areas (0) Regions (0) Abstract: Unavailable Author(s): Unknown Published: International Journal of Rock Mechanics and Mining Science & Geomechanics Abstracts, 1995 Document Number: Unavailable

95

Aerial Thermal Infrared Mapping Of The Waimangu-Waiotapu Geothermal...  

Open Energy Info (EERE)

Aerial Thermal Infrared Mapping Of The Waimangu-Waiotapu Geothermal Region, New Zealand - M A Mongillo, Geothermics, 23(5-6), 1994, Pp 511-526 Jump to: navigation, search...

96

Natural language processing for unmanned aerial vehicle guidance interfaces  

E-Print Network (OSTI)

In this thesis, the opportunities and challenges involved in applying natural language processing techniques to the control of unmanned aerial vehicles (UAVs) are addressed. The problem of controlling an unmanned aircraft ...

Craparo, Emily M. (Emily Marie), 1980-

2004-01-01T23:59:59.000Z

97

Some field observations on OSI aerial photography scales  

SciTech Connect

The US, UK and USSR are attempting to negotiate a Comprehensive Test Ban Treaty (CTBT) in Geneva. One of the verification procedures presently proposed provides for the possibility of conducting an On-Site Inspection (OSI) if a violation is suspected. According to the terms of the draft treaty, the OSI team would be provided with either (1) stereoscopic aerial photographs with a scale of 1:2,500, or equivalent topographic maps (US version) or (2) a large scale aerial photograph (USSR version). In order to gain a better understanding of the aerial photograph issue, EG and G was asked to take stereoscopic aerial photographs of two areas at the NTS at four different scales, 1:2,500, 1:5,000, 1:10,000 and 1:25,000. The purpose of this paper is to present some field observations on the use for OSI type purposes of these different scale photos.

Geil, R.

1981-03-16T23:59:59.000Z

98

An aerial radiological survey of the Davis-Monthan Air Force Base and surrounding area, Tucson, Arizona  

SciTech Connect

An aerial radiological survey, which was conducted from March 1 to 13, 1995, covered a 51-square-mile (132-square-kilometer) area centered on the Davis-Monthan Air Force Base (DMAFB) in Tucson, Arizona. The results of the survey are reported as contours of bismuth-214 ({sup 214}Bi) soil concentrations, which are characteristic of natural uranium and its progeny, and as contours of the total terrestrial exposure rates extrapolated to one meter above ground level. All data were scaled and overlaid on an aerial photograph of the DMAFB area. The terrestrial exposure rates varied from 9 to 20 microroentgens per hour at one meter above the ground. Elevated levels of terrestrial radiation due to increased concentrations of {sup 214}Bi (natural uranium) were observed over the Southern Pacific railroad yard and along portions of the railroad track bed areas residing both within and outside the base boundaries. No man-made, gamma ray-emitting radioactive material was observed by the aerial survey. High-purity germanium spectrometer and pressurized ionization chamber measurements at eight locations within the base boundaries were used to verify the integrity of the aerial results. The results of the aerial and ground-based measurements were found to be in agreement. However, the ground-based measurements were able to detect minute quantities of cesium-137 ({sup 137}Cs) at six of the eight locations examined. The presence of {sup 137}Cs is a remnant of fallout from foreign and domestic atmospheric nuclear weapons testing that occurred in the 1950s and early 1960s. Cesium-137 concentrations varied from 0.1 to 0.3 picocuries per gram, which is below the minimum detectable activity of the aerial system.

NONE

1995-09-01T23:59:59.000Z

99

Building Technologies Office: Sensors and Controls Research  

NLE Websites -- All DOE Office Websites (Extended Search)

Sensors and Controls Sensors and Controls Research to someone by E-mail Share Building Technologies Office: Sensors and Controls Research on Facebook Tweet about Building Technologies Office: Sensors and Controls Research on Twitter Bookmark Building Technologies Office: Sensors and Controls Research on Google Bookmark Building Technologies Office: Sensors and Controls Research on Delicious Rank Building Technologies Office: Sensors and Controls Research on Digg Find More places to share Building Technologies Office: Sensors and Controls Research on AddThis.com... About Take Action to Save Energy Partner with DOE Activities Appliances Research Building Envelope Research Windows, Skylights, & Doors Research Space Heating & Cooling Research Water Heating Research Lighting Research

100

An aerial radiological survey of the Fernald Environmental Management Project and surrounding area, Fernald, Ohio  

SciTech Connect

An aerial radiological survey was conducted from May 17--22, 1994, over a 36 square mile (93 square kilometer) area centered on the Fernald Environmental Management Project located in Fernald, Ohio. The purpose of the survey was to detect anomalous gamma radiation in the environment surrounding the plant. The survey was conducted at a nominal altitude of 150 feet (46 meters) with a line spacing of 250 feet (76 meters). A contour map of the terrestrial gamma exposure rate extrapolated to 1 meter (3.3 feet) above ground was prepared and overlaid on an aerial photograph of the area. Analysis of the data for man made sources showed five sites within the boundaries of the Fernald Environmental Management Project having elevated readings. The exposure rates outside the plant boundary were typical of naturally occurring background radiation. Soil samples and pressurized ion chamber measurements were obtained at four locations within the survey boundaries to supplement the aerial data. It was concluded that although the radionuclides identified in the high-exposure-rate areas are naturally occurring, the levels encountered are greatly enhanced due to industrial activities at the plant.

Phoenix, K.A.

1997-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

The U.S. Department of Energy's Aerial Measuring System (AMS)  

SciTech Connect

For nearly 40 years, aerial radiological search and survey missions have been performed by the United States Department of Energy's (USDOE) Remote Sensing Laboratory (RSL). Originally created in 1967 as Aerial Measurement Operations (AMO), the AMS mission has expanded to include acquiring baseline measurements, performing periodic area monitoring, and responding to radiological emergencies. In an accident scenario, AMS fixed-wing and/or rotary-wing systems can be deployed to map radiological deposition. A fixed-wing system is on standby twenty-fours per day, seven days per week and can be deployed within four hours of notification. It can quickly evaluate high levels of radiation which may constitute immediate health risks. To accomplish its mission the fixed-wing aircraft utilizes the Spectral Aerial Radiological Computer System (SPARCS) which records gross count and spectral information. Data from SPARCS is telemetered to ground stations and secure websites where it can be viewed and evaluated in near-real time. The rotary-wing system deploys following the critical phase of an accident and supports the DOE's Consequence Management Response Team (CMRT) in determining long term consequences of the accident. The rotary wing aircraft utilizes the Radiation and Environmental Data Acquisition and Recording System (REDAR). A 25-liter sodium iodide (NaI) spectral system and precise positioning allow distributed man-made activity of less than 1 {micro}R/hr at ground level to be precisely mapped. This talk will discuss history of the USDOE's AMS program and its current efforts to conduct baseline aerial surveys of some US cities.

Craig Marianno

2008-03-01T23:59:59.000Z

102

Pilot aerial infrared roof top survey. Final report  

SciTech Connect

A summary is presented of a pilot aerial infrared roof top study conducted by the Minnesota Energy Agency. Infrared surveys of 27 Minnesota cities were conducted during the fall and winter of the 1976-1977 heating season. In addition, conventional daytime color photographs were taken of several cities. Film processing was done by the Environmental Protection Agency. The University of Minnesota conducted ground tests to verify the aerial infrared imagery. Thermograph dissemination centers were established in each city and training seminars and materials were prepared and delivered to dissemination center staff. A survey of homeowners who viewed their thermograph at a dissemination center were used to determine the energy savings resulting from the program. An Aerial Infrared Program Users Manual was prepared by the Energy Agency and the Remote Sensing Institute of Brookings, South Dakota.

1979-10-15T23:59:59.000Z

103

Avionics and control system development for mid-air rendezvous of two unmanned aerial vehicles  

E-Print Network (OSTI)

A flight control system was developed to achieve mid-air rendezvous of two unmanned aerial vehicles (UAVs) as a part of the Parent Child Unmanned Aerial Vehicle (PCUAV) project at MIT and the Draper Laboratory. A lateral ...

Park, Sanghyuk, 1973-

2004-01-01T23:59:59.000Z

104

Vibration detection in turbomachinery using non-contacting sensors  

E-Print Network (OSTI)

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 ...

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

2006-01-01T23:59:59.000Z

105

Hydrogen Sensor  

NLE Websites -- All DOE Office Websites (Extended Search)

sensor for detectingquantitating hydrogen and hydrogen isotopes includes a sampling line and a microplasma generator that excites hydrogen from a gas sample and produces...

106

The Efficacy of Aerial Search During the Battle of Midway  

Science Conference Proceedings (OSTI)

The Battle of Midway (June 4-6, 1942) is considered one of the pivotal naval encounters of the Second World War. The battle has been examined in detail within both popular and scholarly literature, and a common opinion found in virtually all of these ... Keywords: Aerial Search, Battle of Midway, Monte Carlo Simulation, Viewsheds, World War II

Denis J. Dean

2011-10-01T23:59:59.000Z

107

U. S. Department of Energy Aerial Measuring Systems  

SciTech Connect

The Aerial Measuring Systems (AMS) is an aerial surveillance system. This system consists of remote sensing equipment to include radiation detectors; multispectral, thermal, radar, and laser scanners; precision cameras; and electronic imaging and still video systems. This equipment, in varying combinations, is mounted in an airplane or helicopter and flown at different heights in specific patterns to gather various types of data. This system is a key element in the US Department of Energy's (DOE) national emergency response assets. The mission of the AMS program is twofold--first, to respond to emergencies involving radioactive materials by conducting aerial surveys to rapidly track and map the contamination that may exist over a large ground area and second, to conduct routinely scheduled, aerial surveys for environmental monitoring and compliance purposes through the use of credible science and technology. The AMS program evolved from an early program, begun by a predecessor to the DOE--the Atomic Energy Commission--to map the radiation that may have existed within and around the terrestrial environments of DOE facilities, which produced, used, or stored radioactive materials.

J. J. Lease

1998-10-01T23:59:59.000Z

108

Improved Rooftop Detection in Aerial Images with Machine Learning  

Science Conference Proceedings (OSTI)

In this paper, we examine the use of machine learning to improve a rooftop detection process, one step in a vision system that recognizes buildings in overhead imagery. We review the problem of analyzing aerial images and describe an existing system ... Keywords: applications of learning, evaluation of algorithms, learning for computer vision, supervised learning

M. A. Maloof; P. Langley; T. O. Binford; R. Nevatia; S. Sage

2003-10-01T23:59:59.000Z

109

Aerial Surveys to Estimate Abundance of Wintering Waterfowl in Mississippi  

E-Print Network (OSTI)

1 Aerial Surveys to Estimate Abundance of Wintering Waterfowl in Mississippi Aaron Pearse, Rick Kaminski, Steve Dinsmore, and Ken Reinecke Monitoring Waterfowl · Banding program · Breeding-ground survey(s) · Hunter surveys · Wintering waterfowl surveys Objectives Design Evaluate Application 1) Sampling 2

Gray, Matthew

110

The influence of animal mobility on the assumption of uniform distances in aerial line transect surveys  

E-Print Network (OSTI)

for estimating animal density from aerial surveys. Analysis of line transect distance data usually relies test evidence for non- uniformity using double-observer distance data from two aerial surveys of five in Queensland. Key words: aerial surveys, double platform distance sampling, independent observers, responsive

Buckland, Steve

111

Aerial Surveys for Marine Mammals in the Northeastern Chukchi Sea: 2009  

E-Print Network (OSTI)

Aerial Surveys for Marine Mammals in the Northeastern Chukchi Sea: 2009 Janet Clarke1, Megan Offshore Monitoring in Drilling Area) aerial surveys for marine mammals were conducted in the northeastern Planning Area during the ice-free season. COMIDA aerial survey objectives include determining

112

http://rcc.its.psu.edu/hpc Low Elevation Aerial Photogrammetry for 3D Reconstructions of  

E-Print Network (OSTI)

-wing aerial photogrammetry. Conducting a topographic survey using laser transits and total stations is time topographic data over large areas. However, in the case of most fixed-wing aerial photographic surveyshttp://rcc.its.psu.edu/hpc Low Elevation Aerial Photogrammetry for 3D Reconstructions

Bjørnstad, Ottar Nordal

113

Proceedings of the Sudden Oak Death Third Science Symposium Six Years of Aerial and Ground Monitoring  

E-Print Network (OSTI)

,3 and Lisa M. Fischer2 Abstract Aerial surveys have been conducted since 2001 to map recent hardwood that causes sudden oak death (SOD). Each year the aerial and ground surveys monitored much of California on private land. Using risk maps combined with aerial survey data, areas where SOD is most likely to become

Standiford, Richard B.

114

Aerial and Ground Surveys for Mapping the Distribution of Phytopthora ramorum  

E-Print Network (OSTI)

345 Aerial and Ground Surveys for Mapping the Distribution of Phytopthora ramorum in California1 Jeffrey A. Mai2 , Walter Mark3 , Lisa Fischer4 , and Amy Jirka5 Key words: aerial surveys, ground surveys of annual aerial surveys to map hardwood mortality in overstory tree species including coast live oak

Standiford, Richard B.

115

Large-Scale Urban Modeling by Combining Ground Level Panoramic and Aerial Imagery  

E-Print Network (OSTI)

from the United States Ge- ographic Survey. One aerial image is shown in Fig. 1(a). Another inherentLarge-Scale Urban Modeling by Combining Ground Level Panoramic and Aerial Imagery Lu Wang, Suya You a high resolution orthorecti- fied aerial image to provide the building footprints. Users draw

Shahabi, Cyrus

116

Aerial surveys vs hunting statistics to monitor deer density: the example of Anticosti Island, Quebec, Canada  

E-Print Network (OSTI)

Aerial surveys vs hunting statistics to monitor deer density: the example of Anticosti Island, Que., Co^te´, S.D., Gingras, A., Potvin, F. & Huot, J. 2007: Aerial surveys vs hunting statistics-tailed deer densities estimated in 2001 on the basis of an extensive aerial survey of 512 plots, each 3.5 km

Laval, Université

117

EUV Focus Sensor: Design and Modeling  

Science Conference Proceedings (OSTI)

We describe performance modeling and design optimization of a prototype EUV focus sensor (FS) designed for use with existing 0.3-NA EUV projection-lithography tools. At 0.3-NA and 13.5-nm wavelength, the depth of focus shrinks to 150 nm increasing the importance of high-sensitivity focal-plane detection tools. The FS is a free-standing Ni grating structure that works in concert with a simple mask pattern of regular lines and spaces at constant pitch. The FS pitch matches that of the image-plane aerial-image intensity: it transmits the light with high efficiency when the grating is aligned with the aerial image laterally and longitudinally. Using a single-element photodetector, to detect the transmitted flux, the FS is scanned laterally and longitudinally so the plane of peak aerial-image contrast can be found. The design under consideration has a fixed image-plane pitch of 80-nm, with aperture widths of 12-40-nm (1-3 wavelengths), and aspect ratios of 2-8. TEMPEST-3D is used to model the light transmission. Careful attention is paid to the annular, partially coherent, unpolarized illumination and to the annular pupil of the Micro-Exposure Tool (MET) optics for which the FS is designed. The system design balances the opposing needs of high sensitivity and high throughput optimizing the signal-to-noise ratio in the measured intensity contrast.

Goldberg, Kenneth A.; Teyssier, Maureen E.; Liddle, J. Alexander

2005-05-01T23:59:59.000Z

118

An aerial radiological survey of the Robert Emmett Ginna Nuclear Power Plant and surrounding area, Ontario, New York  

SciTech Connect

Terrestrial radioactivity surrounding the Robert Emmett Ginna Nuclear Power Plant was measured using aerial radiological surveying techniques. The purpose of this survey was to document exposure rates near the plant and to identify unexpected, man-made radiation sources within the survey area. The surveyed area included land areas within a three-mile radius of the plant site. Data were acquired using an airborne detection system that employed sodium iodide, thallium-activated detectors. Exposure-rate and photopeak counts were computed from these data and plotted on aerial photographs of the survey area. Several ground-based exposure measurements were made for comparison with the aerial survey results. Exposure rates in the area surrounding the plant site varied from 6 to 10 microroentgens per hour. Man-made radiation (cobalt-60 within the plant site and cesium-1 37 directly over the reactor) was found at the plant site. In addition, small areas of suspected cesium-137 activity were found within the survey areas. Other than these small sites, the survey area was free of man-made radioac- tivity.

Proctor, A.E.

1997-06-01T23:59:59.000Z

119

Aerial survey of Bay Area continues through Saturday | National Nuclear  

National Nuclear Security Administration (NNSA)

of Bay Area continues through Saturday | National Nuclear of Bay Area continues through Saturday | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Aerial survey of Bay Area continues through Saturday Aerial survey of Bay Area continues through Saturday Posted By Office of Public Affairs NNSA Blog This week, a NNSA helicopter has been flying at a low-level altitude over

120

An aerial radiological survey of Naturita, Colorado and surrounding area  

SciTech Connect

An aerial radiological survey of four areas in the vicinity of the inactive uranium mill tailings site at Naturita, Colorado was conducted in September 1981. The average background radiation exposure rate (normalized to 3 feet above the ground) was about 10 to 16 microroentgens per hour ({mu}R/h). Uranium ore or tailings were detected at Naturita, Nucla, East Vancorum, and the general region downriver and downwind from the former mill tailings site.

Jaffe, R.J.

1982-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

An Attempt To Use Aerial Gamma-Ray Spectrometry Results In Petrochemic...  

Open Energy Info (EERE)

are fairly rich in radioelement concentrations. The aerial gamma-ray spectrometric survey data, gathered for the purpose of radioactive mineral exploration were utilized as an...

122

An Embedded Nonlinear Control Implementation for a Hovering Small Unmanned Aerial System.  

E-Print Network (OSTI)

??This thesis presents the design, development, and experimental verification of an embedded vehicle controller applied to a hovering small unmanned aerial system dubbed the UFO.… (more)

Althaus, Joseph H.

2010-01-01T23:59:59.000Z

123

Evaluation of aerial thermography to discriminate loft insulation in residential housing .  

E-Print Network (OSTI)

??This thesis examines the use of aerial thermography data to discriminate loft (attic) insulation levels in residential housing, with ventilated pitched roofs, in the UK.… (more)

Allinson, David

2007-01-01T23:59:59.000Z

124

AERIAL SURVEYS OF BELUGA IN COOK INLET, ALASKA,  

E-Print Network (OSTI)

The National Marine Fisheries Service (NMFS) conducted an aerial survey of the beluga population in Cook Inlet, Alaska, during 4-11 June 2002. The 45 hr survey was flown in a twin-engine, high-wing aircraft at an altitude of 244 m (800 ft) and speed of 185 km/hr (100 kt), consistent with NMFS ’ surveys conducted each year since 1993. The flights in June 2002 included one or more surveys of coastal areas (flown 1.4 km offshore) around the entire Inlet and 1,234 km of transects across the Inlet, effectively searching more than 26 % of Cook Inlet but nearly 100 % of the coastal areas. Paired, independent observers searched on the coastal (left) side of the plane, where virtually all beluga sightings occur, while a single observer was on the right. A computer operator/data recorder was also on the left side. After finding beluga groups, a series of aerial passes were made with two pairs of primary observers each making 4 or more independent counts of each group. Median counts made in optimal viewing conditions on 2 to 6 different days were 0-93 beluga in the Susitna Delta (between the Beluga and Little Susitna Rivers), 54-97 in Knik Arm (there appeared to be exchanges of whales between the Susitna area and Knik Arm), and 10-11 in Chickaloon Bay. No belugas were seen elsewhere. This sighting distribution has been consistent in June or July most years since 1996. The sum of the median aerial estimates (a very rough but quick index of relative abundance, not corrected for estimates of whales missed) for June 2002 is 192 belugas. This

David J. Rugh; Barbara A. Mahoney; Laura K. Litzky; Brad Smith

2002-01-01T23:59:59.000Z

125

Aerial Measuring System (AMS) Baseline Surveys for Emergency Planning  

SciTech Connect

Originally established in the 1960s to support the Nuclear Test Program, the AMS mission is to provide a rapid and comprehensive worldwide aerial measurement, analysis, and interpretation capability in response to a nuclear/radiological emergency. AMS provides a responsive team of individuals whose processes allow for a mission to be conducted and completed with results available within hours. This presentation slide-show reviews some of the history of the AMS, summarizes present capabilities and methods, and addresses the value of the surveys.

Lyons, C

2012-06-04T23:59:59.000Z

126

Sensors, Instrumentation Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Sensors, Instrumentation Systems science-innovationassetsimagesicon-science.jpg Sensors, Instrumentation Systems National security depends on science and technology. The...

127

An aerial radiological survey of the Central Savannah River Site, Aiken, South Carolina  

Science Conference Proceedings (OSTI)

An aerial radiological survey was conducted over a 194-square- kilometer (75-square-mile) area encompassing the central portion of the Savannah River Site (SRS). The survey was flown during February 10--27, 1987. These radiological measurements were used as baseline data for the central area and for determining the extent of man-made radionuclide distribution. Previous SRS surveys included small portions of the area; the 1987 survey was covered during the site- wide survey conducted in 1979. Man-made radionuclides (including cobalt-60, cesium-137, protactinium-234m, and elevated levels of uranium-238 progeny) that were detected during the survey were typical of those produced by the reactor operations and material processing activities being conducted in the area. The natural terrestrial radiation levels were consistent with those measured during prior surveys of other SRS areas. 1 refs., 4 figs.

Feimster, E.L.

1991-09-01T23:59:59.000Z

128

Sensor apparatus  

DOE Patents (OSTI)

A sensor apparatus and method for detecting an environmental factor is shown that includes an acoustic device that has a characteristic resonant vibrational frequency and mode pattern when exposed to a source of acoustic energy and, further, when exposed to an environmental factor, produces a different resonant vibrational frequency and/or mode pattern when exposed to the same source of acoustic energy.

Deason, Vance A. (Idaho Falls, ID); Telschow, Kenneth L. (Idaho Falls, ID)

2009-12-22T23:59:59.000Z

129

Chemical sensors  

DOE Patents (OSTI)

Sensors responsive to small changes in the concentration of chemical species are disclosed, comprising (a) a mechanochemically responsive polymeric film capable of expansion or contraction in response to a change in its chemical environment, operatively coupled to (b) a transducer capable of directly converting said expansion or contraction to a measurable electrical response.

Lowell, Jr., James R. (Bend, OR); Edlund, David J. (Bend, OR); Friesen, Dwayne T. (Bend, OR); Rayfield, George W. (Bend, OR)

1991-01-01T23:59:59.000Z

130

A Low-Cost Natural Gas/Freshwater Aerial Pipeline  

E-Print Network (OSTI)

Offered is a new type of low-cost aerial pipeline for delivery of natural gas, an important industrial and residential fuel, and freshwater as well as other payloads over long distances. The offered pipeline dramatically decreases the construction and operation costs and the time necessary for pipeline construction. A dual-use type of freight pipeline can improve an arid rural environment landscape and provide a reliable energy supply for cities. Our aerial pipeline is a large, self-lofting flexible tube disposed at high altitude. Presently, the term "natural gas" lacks a precise technical definition, but the main components of natural gas are methane, which has a specific weight less than air. A lift force of one cubic meter of methane equals approximately 0.5 kg. The lightweight film flexible pipeline can be located in the Earth-atmosphere at high altitude and poses no threat to airplanes or the local environment. The authors also suggest using lift force of this pipeline in tandem with wing devices for che...

Bolonkin, A; Bolonkin, Alexander; Cathcart, Richard

2007-01-01T23:59:59.000Z

131

A Low-Cost Natural Gas/Freshwater Aerial Pipeline  

E-Print Network (OSTI)

Offered is a new type of low-cost aerial pipeline for delivery of natural gas, an important industrial and residential fuel, and freshwater as well as other payloads over long distances. The offered pipeline dramatically decreases the construction and operation costs and the time necessary for pipeline construction. A dual-use type of freight pipeline can improve an arid rural environment landscape and provide a reliable energy supply for cities. Our aerial pipeline is a large, self-lofting flexible tube disposed at high altitude. Presently, the term "natural gas" lacks a precise technical definition, but the main components of natural gas are methane, which has a specific weight less than air. A lift force of one cubic meter of methane equals approximately 0.5 kg. The lightweight film flexible pipeline can be located in the Earth-atmosphere at high altitude and poses no threat to airplanes or the local environment. The authors also suggest using lift force of this pipeline in tandem with wing devices for cheap shipment of a various payloads (oil, coal and water) over long distances. The article contains a computed macroproject in northwest China for delivery of 24 billion cubic meter of gas and 23 millions tonnes of water annually.

Alexander Bolonkin; Richard Cathcart

2007-01-05T23:59:59.000Z

132

Aerial survey of Emperor geese and other waterbirds  

E-Print Network (OSTI)

Abstract: This report presents results of the 29 th consecutive year of fall aerial emperor goose surveys in southwest Alaska. All bird and marine mammal species were counted with emphasis on emperor geese, Pacific brant, Canada geese, and Steller’s eiders. Population estimates for emperor geese and Steller’s eiders were 73,531 and 80,102, respectively. Two additional replicate surveys of the Izembek NWR area were flown on 2 and 3 October to estimate sizes of the Pacific brant and Canada goose populations. Averages counts for the Izembek area, based on three surveys, were 138,476 Pacific brant and 29,964 Canada geese. The survey was flown from 26 September to 3 October 2007 from the Naknek River to Bechevin Bay, along the north side of the Alaska Peninsula and along the south side west of Cold Bay. Weather precluded south side coverage east of Cold Bay. The USFWS Turbine-Beaver (N754) was used and a left seat pilot/observer and right seat observer made observations along coastlines and over estuaries from 45m (150 feet) ASL and at 200km/hr (110 kts). Key words: aerial survey, emperor geese, waterbirds, southwest Alaska. October 2007

Edward J. Mallek; Christian P. Dau; U. S. Fish; Wildlife Service; U. S. Fish; Wildlife Service

2005-01-01T23:59:59.000Z

133

Supervised Parametric Classification of Aerial LiDAR Data  

E-Print Network (OSTI)

In this work, we classify 3D aerial LiDAR height data into roads, grass, buildings, and trees using a supervised parametric classification algorithm. Since the terrain is highly undulating, we subtract the terrain elevations using digital elevation models (DEMs, easily available from the United States Geological Survey (USGS)) to obtain the height of objects from a flat level. In addition to this height information, we use height texture (variation in height), intensity (amplitude of lidar response), and multiple (two) returns from lidar to classify the data. Furthermore, we have used luminance (measured in the visible spectrum) from aerial imagery as the fifth feature for classification. We have used mixture of Gaussian models for modeling the training data. Model parameters and the posterior probabilities are estimated using Expectation-Maximization (EM) algorithm. We have experimented with different number of components per model and found that four components per model yield satisfactory results. We have tested the results using leaveone -out as well as random test. Classification results are in the range of 66% -- 84% depending upon the combination of features used that compares very favorably with. trainall -test-all results of 85%. Further improvement is achieved using spatial coherence.

Amin P. Charaniya; Roberto Manduchi; Roberto M; Suresh K. Lodha

2004-01-01T23:59:59.000Z

134

DOE/NNSA Aerial Measuring System (AMS): Flying the 'Real' Thing  

SciTech Connect

This slide show documents aerial radiation surveys over Japan. Map product is a compilation of daily aerial measuring system missions from the Fukushima Daiichi power plant to 80 km radius. In addition, other flights were conducted over US military bases and the US embassy.

Craig Lyons

2011-06-24T23:59:59.000Z

135

Evaluation of an OPNET model for unmanned aerial vehicle (UAV) networks  

Science Conference Proceedings (OSTI)

The concept of Unmanned Aerial Vehicles (UAV) was first used as early as the American Civil War, when the North and the South launched balloons with explosive devices. Since the American Civil War, the UAV concept has been used in some form in subsequent ... Keywords: mobile ad hoc networks, simulation validation, unmanned aerial vehicle

Clifton M. Durham; Todd R. Andel; Kenneth M. Hopkinson; Stuart H. Kurkowski

2009-03-01T23:59:59.000Z

136

Introduction Aerial surveys from aircraft are a critical component of many environmental research,  

E-Print Network (OSTI)

Introduction Aerial surveys from aircraft are a critical component of many environmental research an ability to directly estimate detection probability. By bringing the ground sampling and aerial survey more safety concerns because of low altitude flights and tight maneuvers necessary for such surveys

Mazzotti, Frank

137

Embedded Estimation of Fault Parameters in an Unmanned Aerial Vehicle Sikandar Samar  

E-Print Network (OSTI)

Embedded Estimation of Fault Parameters in an Unmanned Aerial Vehicle Sikandar Samar Information of the Aerosonde unmanned aerial vehicle (UAV) in the presence of winds and turbulence. An excellent performance studied in the controls community for the past two decades; see survey papers [1], [2], [3

138

Pacific Walrus Sightings Documented by COMIDA Aerial Surveys of the Northeastern Chukchi Sea in 2010  

E-Print Network (OSTI)

Pacific Walrus Sightings Documented by COMIDA Aerial Surveys of the Northeastern Chukchi Sea agreement with the Minerals Management Service, conducted aerial surveys in the northeastern Chukchi Sea as part of the Chukchi Offshore Monitoring in Drilling Area (COMIDA) project. The surveys, which have been

139

Using vertical aerial photography to estimate mass balance at a point  

E-Print Network (OSTI)

Using vertical aerial photography to estimate mass balance at a point L. A. RASMUSSEN 1 and R. M. KRIMMEL2 1 Geophysics Program, University of Washington, Seattle WA 98195, U.S.A. 2 US Geological Survey-94. Vertical aerial photography from late summer 1992, 1993, and 1994 is analyzed photogrammetrically to get

Rasmussen, L.A.

140

Wind-Energy based Path Planning For Unmanned Aerial Vehicles Using Markov Decision Processes  

E-Print Network (OSTI)

Wind-Energy based Path Planning For Unmanned Aerial Vehicles Using Markov Decision Processes Wesam H. Al-Sabban, Luis F. Gonzalez and Ryan N. Smith Abstract-- Exploiting wind-energy is one possible way to extend the flight duration of an Unmanned Aerial Vehicle. Wind-energy can also be used

Smith, Ryan N.

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Ultrasensitive surveillance of sensors and processes  

DOE Patents (OSTI)

A method and apparatus for monitoring a source of data for determining an operating state of a working system. The method includes determining a sensor (or source of data) arrangement associated with monitoring the source of data for a system, activating a method for performing a sequential probability ratio test if the data source includes a single data (sensor) source, activating a second method for performing a regression sequential possibility ratio testing procedure if the arrangement includes a pair of sensors (data sources) with signals which are linearly or non-linearly related; activating a third method for performing a bounded angle ratio test procedure if the sensor arrangement includes multiple sensors and utilizing at least one of the first, second and third methods to accumulate sensor signals and determining the operating state of the system.

Wegerich, Stephan W. (Glendale Heights, IL); Jarman, Kristin K. (Richland, WA); Gross, Kenneth C. (Bolingbrook, IL)

2001-01-01T23:59:59.000Z

142

Ultrasensitive surveillance of sensors and processes  

DOE Patents (OSTI)

A method and apparatus for monitoring a source of data for determining an operating state of a working system. The method includes determining a sensor (or source of data) arrangement associated with monitoring the source of data for a system, activating a method for performing a sequential probability ratio test if the data source includes a single data (sensor) source, activating a second method for performing a regression sequential possibility ratio testing procedure if the arrangement includes a pair of sensors (data sources) with signals which are linearly or non-linearly related; activating a third method for performing a bounded angle ratio test procedure if the sensor arrangement includes multiple sensors and utilizing at least one of the first, second and third methods to accumulate sensor signals and determining the operating state of the system.

Wegerich, Stephan W. (Glendale Heights, IL); Jarman, Kristin K. (Richland, WA); Gross, Kenneth C. (Bolingbrook, IL)

1999-01-01T23:59:59.000Z

143

USE OF THE AERIAL MEASUREMENT SYSTEM HELICOPTER EMERGENCY RESPONSE ACQUISITION SYSTEMS WITH GEOGRAPHIC INFORMATION SYSTEM FOR RADIOACTIVE SOIL REMEDIATION - [11504  

SciTech Connect

The Aerial Measurement System (AMS) Helicopter Emergency Response Acquisition System provides a thorough and economical means to identify and characterize the contaminants for large area radiological surveys. The helicopter system can provide a 100-percent survey of an area that qualifies as a scoping survey under the Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM) methodology. If the sensitivity is adequate when compared to the clean up values, it may also be used for the characterization survey. The data from the helicopter survey can be displayed and manipulated to provide invaluable data during remediation activities.

BROCK CT

2011-02-15T23:59:59.000Z

144

Chemical sensors  

DOE Patents (OSTI)

Sensors responsive to small changes in the concentration of chemical species are disclosed, comprising a mechanicochemically responsive polymeric film capable of expansion or contraction in response to a change in its chemical environment, either operatively coupled to a transducer capable of directly converting the expansion or contraction to a measurable electrical or optical response, or adhered to a second inert polymeric strip, or doped with a conductive material. 12 figs.

Lowell, J.R. Jr.; Edlund, D.J.; Friesen, D.T.; Rayfield, G.W.

1992-06-09T23:59:59.000Z

145

Chemical sensors  

DOE Patents (OSTI)

Sensors responsive to small changes in the concentration of chemical species are disclosed, comprising a mechanicochemically responsive polymeric film capable of expansion or contraction in response to a change in its chemical environment, either operatively coupled to a transducer capable of directly converting the expansion or contraction to a measurable electrical or optical response, or adhered to a second inert polymeric strip, or doped with a conductive material.

Lowell, Jr., James R. (Bend, OR); Edlund, David J. (Bend, OR); Friesen, Dwayne T. (Bend, OR); Rayfield, George W. (Eugene, OR)

1992-01-01T23:59:59.000Z

146

Humidity Sensors  

Science Conference Proceedings (OSTI)

Table 21   Applications for humidity sensors...parts 5 to 40 0 to 50 Magnetic heads, LSIs, ICs Agriculture, forestry stockbreeding Greenhouse air conditioning 5 to 40 0 to 100 Air conditioning Dew prevention in tealeaf growing -10 to 60 50 to 100 Dew prevention Broiler farming 20 to 25 40 to 70 Health control Measurement Thermostatic bath -5 to 100 0 to...

147

Pixel-wise Motion Detection in Persistent Aerial Video Surveillance  

SciTech Connect

In ground stabilized WAMI, stable objects with depth appear to have precessive motion due to sensor movement alongside objects undergoing true, independent motion in the scene. Computational objective is to disambiguate independent and structural motion in WAMI efficiently and robustly.

Vesom, G

2012-03-23T23:59:59.000Z

148

Mapping Tropical Forest Trees Using High-Resolution Aerial Digital Photographs Carol X. Garzon-Lopez1,5  

E-Print Network (OSTI)

-scale tree distri- butions. At Barro Colorado Island, Panama, we used high-resolution aerial digital is available in the online version of this article. Key words: Barro Colorado Island; high-resolution aerialMapping Tropical Forest Trees Using High-Resolution Aerial Digital Photographs Carol X. Garzon

Bermingham, Eldredge

149

Wildlife Society Bulletin 2005, 33(1):317325 Peer edited Although widely used, aerial surveys of large  

E-Print Network (OSTI)

317 Wildlife Society Bulletin 2005, 33(1):317­325 Peer edited Although widely used, aerial surveys biases remained unsatisfactory, more recent approaches aim at correcting the bias. Bias in aerial surveys missed. Availability bias (Graham and Bell 1989, Marsh and From the Field: Testing 2 aerial survey

Laval, Université

150

Thermal soaring flight of birds and unmanned aerial vehicles  

E-Print Network (OSTI)

Thermal soaring saves much energy, but flying large distances in this form represents a great challenge for birds, people and Unmanned Aerial Vehicles (UAVs). The solution is to make use of so-called thermals, which are localized, warmer regions in the atmosphere moving upwards with a speed exceeding the descent rate of birds and planes. Saving energy by exploiting the environment more efficiently is an important possibility for autonomous UAVs as well. Successful control strategies have been developed recently for UAVs in simulations and in real applications. This paper first presents an overview of our knowledge of the soaring flight and strategy of birds, followed by a discussion of control strategies that have been developed for soaring UAVs both in simulations and applications on real platforms. To improve the accuracy of simulation of thermal exploitation strategies we propose a method to take into account the effect of turbulence. Finally we propose a new GPS independent control strategy for exploiting...

Ákos, Zsuzsa; Leven, Severin; Vicsek, Tamás; 10.1088/1748-3182/5/4/045003

2010-01-01T23:59:59.000Z

151

Analysis Using Aerial Photography and Ground Survey Data " (Watershed  

E-Print Network (OSTI)

As you are aware, the Watershed Analysis study which we are conducting will require additional time for completion. We are submitting this interim report on the project for your review and comment. The report is intended to: i. 2. Describe the status of the project and projected timeline for completion; Present our conceptual approach to watershed analysis in the context of cumulative effects; 3. Describe the past use of remote sensing for stream, riparian, and watershed studies and some critical issues which must be addressed in any watershed or stream analysis system; 4. Describe our study methods; 5. Present a preliminary analysis of changes in stream habitat in Taneum creek as determined from physical stream surveys conducted for this project and historical stream survey data. Since the aerial photograph analysis is not completed, we do not believe that a

Dave Somers; Jeanette Smith; Robert Wissmar; Nancy Sturnham Dnr; Tim Beechie; Dave Somers; Jeanette Smith; Robert Wissmar

1991-01-01T23:59:59.000Z

152

Wireless sensor network survey  

Science Conference Proceedings (OSTI)

A wireless sensor network (WSN) has important applications such as remote environmental monitoring and target tracking. This has been enabled by the availability, particularly in recent years, of sensors that are smaller, cheaper, and intelligent. These ... Keywords: Protocols, Sensor network deployment, Sensor network services, Survey, Wireless sensor network

Jennifer Yick; Biswanath Mukherjee; Dipak Ghosal

2008-08-01T23:59:59.000Z

153

Hydrogen sensor  

DOE Patents (OSTI)

A hydrogen sensor for detecting/quantitating hydrogen and hydrogen isotopes includes a sampling line and a microplasma generator that excites hydrogen from a gas sample and produces light emission from excited hydrogen. A power supply provides power to the microplasma generator, and a spectrometer generates an emission spectrum from the light emission. A programmable computer is adapted for determining whether or not the gas sample includes hydrogen, and for quantitating the amount of hydrogen and/or hydrogen isotopes are present in the gas sample.

Duan, Yixiang (Los Alamos, NM); Jia, Quanxi (Los Alamos, NM); Cao, Wenqing (Katy, TX)

2010-11-23T23:59:59.000Z

154

Air quality investigations of the Sandia National Laboratories Sol se Mete Aerial Cable Facility  

Science Conference Proceedings (OSTI)

The air quality implications of the test and evaluation activities at the Sandia National Laboratories Sol se Mete Aerial Cable Facility are examined. All facets of the activity that affect air quality are considered. Air contaminants produced directly include exhaust products of rocket motors used to accelerate test articles, dust and gas from chemical explosives, and exhaust gases from electricity generators in the test arenas. Air contaminants produced indirectly include fugitive dust and exhaust contaminants from vehicles used to transport personnel and material to the test area, and effluents produced by equipment used to heat the project buildings. Both the ongoing program and the proposed changes in the program are considered. Using a reliable estimate of th maximum annual testing level, the quantities of contaminants released by project activities ar computed either from known characteristics of test items or from EPA-approved emission factors Atmospheric concentrations of air contaminants are predicted using EPA dispersion models. The predicted quantities and concentrations are evaluated in relation to Federal, New Mexico, an Bernalillo County air quality regulations and the human health and safety standards of the American Conference of Governmental Industrial Hygienists.

Gutman, W.M.; Silver, R.J. [New Mexico State Univ., Las Cruces, NM (United States). Physical Science Lab.

1994-12-01T23:59:59.000Z

155

Dynamic sensor tasking in heterogeneous, mobile sensor networks  

E-Print Network (OSTI)

Modern sensor environments often attempt to combine several sensors into a single sensor network. The nodes of this network are generally heterogeneous and may vary with respect to sensor complexity, sensor operational ...

Jones, Peter B. (Peter B.), S.M., Massachusetts Institute of Technology

2005-01-01T23:59:59.000Z

156

Plug & Play Sensors Sites  

Science Conference Proceedings (OSTI)

... Documents. Plug & Play Sensors Sites. ... Plug & Play Sensors Sites. By selecting some of the links below, you will be leaving NIST webspace. ...

2012-06-05T23:59:59.000Z

157

Virtual Sensors: Abstracting Data from Physical Sensors  

Science Conference Proceedings (OSTI)

Sensor networks are becoming increasingly pervasive. Existing methods of aggregation in sensor networks offer mostly standard mathematical operators over homogeneous data types. In this paper, we instead focus on supporting emerging scenarios in which ...

Sanem Kabadayi; Adam Pridgen; Christine Julien

2006-06-01T23:59:59.000Z

158

Estimation of Horizontal Diffusion from Oblique Aerial Photographs of Smoke Clouds  

Science Conference Proceedings (OSTI)

A photogrammetric method is described for obtaining estimates of the horizontal diffusion parameter ?y from oblique aerial photographs of smoke clouds. The method requires three reference markers on the ground to determine the geometry in each ...

Richard M. Eckman; Torben Mikkelsen

1991-12-01T23:59:59.000Z

159

The enclosed file contains aerial radiological data that was collected with a fi  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

enclosed file contains aerial radiological data that was collected with a fixed-wing aircraft (C-12) off enclosed file contains aerial radiological data that was collected with a fixed-wing aircraft (C-12) off of the east coast of Japan on three separate flights dated April 5, 2011, April 18, 2011, and May 9, 2011. Please note that the normal analysis of aerial radiological data assumes that the material is deposited on the ground and is not constantly moving. Therefore, this data set differs from previously posted aerial data in that the data must be viewed as three separate "snapshots" of the radiological signature from the ocean on these three dates, and NOT as one contiguous data set or flow pattern of the same deposition taken on different dates. Further, the vertical profile of the material is more ambiguous for over-sea data than for terrestrial data.

160

A Lightweight Observation System for Atmospheric Carbon Dioxide Concentration Using a Small Unmanned Aerial Vehicle  

Science Conference Proceedings (OSTI)

To make the investigation of the temporal and spatial variations of atmospheric CO2 in and above the planetary boundary layer more flexible and economical, a lightweight observation system using a small unmanned aerial vehicle has been developed ...

T. Watai; T. Machida; N. Ishizaki; G. Inoue

2006-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Improving High-Resolution Numerical Weather Simulations by Assimilating Data from an Unmanned Aerial System  

Science Conference Proceedings (OSTI)

In this study, it is demonstrated how temperature, humidity, and wind profile data from the lower troposphere obtained with a lightweight unmanned aerial system (UAS) can be used to improve high-resolution numerical weather simulations by four-...

Marius O. Jonassen; Haraldur Ólafsson; Hálfdán Ágústsson; Ólafur Rögnvaldsson; Joachim Reuder

2012-11-01T23:59:59.000Z

162

Specifics of aircraft control algorithms in the case of aerial survey  

Science Conference Proceedings (OSTI)

This paper considers the control problem for a piloted atmospheric aircraft during execution of different flight missions. The basic control schemes are identified in the case of aerial survey. Modern control systems are compared and analyzed. A software ...

E. V. Karshakov

2013-12-01T23:59:59.000Z

163

Directional Wavelet Analysis of Inhomogeneity in the Surface Wave Field from Aerial Laser Scanning Data  

Science Conference Proceedings (OSTI)

Modern measurement techniques such as aerial laser scanning allow for rapid determination of the spatial variation of sea surface elevation. Wave fields obtained from such data show spatial inhomogeneity associated with the presence of wave ...

Richard M. Gorman; D. Murray Hicks

2005-06-01T23:59:59.000Z

164

Measuring the Wind Vector Using the Autonomous Mini Aerial Vehicle M2AV  

Science Conference Proceedings (OSTI)

The meteorological mini unmanned aerial vehicle (M2AV) was used for measuring the meteorological wind. The wind is the vector difference between the aircraft speed relative to the earth (inertial velocity) and relative to the airflow (true ...

Aline van den Kroonenberg; Tim Martin; Marco Buschmann; Jens Bange; Peter Vörsmann

2008-11-01T23:59:59.000Z

165

Field Guide: Transmission Line Aerial Marking and Lighting (Optimized for Electronic Viewing)  

Science Conference Proceedings (OSTI)

Various types of aerial marking and lighting are applied to transmission structures and wires as a safety enhancement to improve the visibility of structures and lines. This EPRI report, one in a series of practical guides designed as reference aids for utility personnel working in the field, is devoted to the subject of transmission line aerial marking and lighting, with an emphasis on inspection.This field guide has been optimized for viewing on electronic devices. For a standard PDF ...

2011-12-09T23:59:59.000Z

166

Field Guide: Transmission Line Aerial Marking and Lighting (Hard Copy and Standard PDF)  

Science Conference Proceedings (OSTI)

Various types of aerial marking and lighting are applied to transmission structures and wires as a safety enhancement to improve the visibility of structures and lines. This EPRI report, one in a series of practical guides designed as reference aids for utility personnel working in the field, is devoted to the subject of transmission line aerial marking and lighting, with an emphasis on inspection. The pocket-sized, ring-bound guide is printed in color on high-quality paper. ...

2012-11-09T23:59:59.000Z

167

Aerial Measuring System Technical Integration Annual Report 2002  

SciTech Connect

Fiscal Year 2002 is the second year of a five-year commitment by the U.S. Department of Energy, National Nuclear Security Administration (NNSA) to invest in development of new and state-of-the-art technologies for the Aerial Measuring Systems (AMS) project. In 2000, NNSA committed to two million dollars for AMS Technical Integration (TI) for each of five years. The tragedy of September 11, 2001, profoundly influenced the program. NNSA redirected people and funding resources at the Remote Sensing Laboratory (RSL) to more immediate needs. Funds intended for AMS TI were redirected to NNSA's new posture of leaning further forward throughout. AMS TI was brought to a complete halt on December 10, 2001. Then on April 30, 2002, NNSA Headquarters allowed the restart of AMS TI at the reduced level of $840,000. The year's events resulted in a slow beginning of several projects, some of which were resumed only a few weeks before the AMS TI Symposium held at RSL on July 30.

Bechtel Nevada Remote Sensing Laboratory

2003-06-01T23:59:59.000Z

168

The Java-Sumatra Aerial Mega-Tramway  

E-Print Network (OSTI)

A mega-tramway based on the Indonesian islands of Sumatra and Java is proposed to span Sunda Strait. The Java-Sumatra Aerial Mega-Tramway (JSAMT) will be self-elevating and will regularly and cheaply launch passengers and cargoes via two conveyor belt-like facilities using standard winged shipping containers like those currently used by international trucking and ocean shipping industries that are volplaned across the Sunda Strait. The JSAMT will be a self-sustaining toll facility free of any requirement for international loans or funding guarantees for its construction. Its existence will remove any immediate need for an expensive to dig/maintain Nusantara Tunnel. We offer the formative basic technical specifications for the JSAMT and indicate some of the physical and cultural geographical facts underpinning our macro-engineering proposal; offshoots of a perfected and tested JSAMT may be installed at Palk Strait between India and Sri Lanka, the Gibraltar Strait and the Bering Strait by mid-21st Century.

Alexander Bolonkin; Richard Cathcart

2007-01-09T23:59:59.000Z

169

AERIAL MEASUREMENTS OF CONVECTION CELL ELEMENTS IN HEATED LAKES  

SciTech Connect

Power plant-heated lakes are characterized by a temperature gradient in the thermal plume originating at the discharge of the power plant and terminating at the water intake. The maximum water temperature discharged by the power plant into the lake depends on the power generated at the facility and environmental regulations on the temperature of the lake. Besides the observed thermal plume, cloud-like thermal cells (convection cell elements) are also observed on the water surface. The size, shape and temperature of the convection cell elements depends on several parameters such as the lake water temperature, wind speed, surfactants and the depth of the thermocline. The Savannah River National Laboratory (SRNL) and Clemson University are collaborating to determine the applicability of laboratory empirical correlations between surface heat flux and thermal convection intensity. Laboratory experiments at Clemson University have demonstrated a simple relationship between the surface heat flux and the standard deviation of temperature fluctuations. Similar results were observed in the aerial thermal imagery SRNL collected at different locations along the thermal plume and at different elevations. SRNL will present evidence that the results at Clemson University are applicable to cooling lakes.

Villa-Aleman, E; Saleem Salaymeh, S; Timothy Brown, T; Alfred Garrett, A; Malcolm Pendergast, M; Linda Nichols, L

2007-12-19T23:59:59.000Z

170

Latency of wireless sensor networks with uncoordinated power saving mechanisms  

Science Conference Proceedings (OSTI)

We consider a wireless sensor network, where nodes switch between an active (on) and a sleeping (off) mode, to save energy. The basic assumptions are that the on/off schedules are completely uncoordinated and that the sensors are distributed according ... Keywords: continuum percolation, first passage percolation, sensor networks

Olivier Dousse; Petteri Mannersalo; Patrick Thiran

2004-05-01T23:59:59.000Z

171

High Altitude Aerial Natural Gas Leak Detection System  

SciTech Connect

The objective of this program was to develop and demonstrate a cost-effective and power-efficient advanced standoff sensing technology able to detect and quantify, from a high-altitude (> 10,000 ft) aircraft, natural gas leaking from a high-pressure pipeline. The advanced technology is based on an enhanced version of the Remote Methane Leak Detector (RMLD) platform developed previously by Physical Sciences Inc. (PSI). The RMLD combines a telecommunications-style diode laser, fiber-optic components, and low-cost DSP electronics with the well-understood principles of Wavelength Modulation Spectroscopy (WMS), to indicate the presence of natural gas located between the operator and a topographic target. The transceiver transmits a laser beam onto a topographic target and receives some of the laser light reflected by the target. The controller processes the received light signal to deduce the amount of methane in the laser's path. For use in the airborne platform, we modified three aspects of the RMLD, by: (1) inserting an Erbium-doped optical fiber laser amplifier to increase the transmitted laser power from 10 mW to 5W; (2) increasing the optical receiver diameter from 10 cm to 25 cm; and (3) altering the laser wavelength from 1653 nm to 1618 nm. The modified RMLD system provides a path-integrated methane concentration sensitivity {approx}5000 ppm-m, sufficient to detect the presence of a leak from a high capacity transmission line while discriminating against attenuation by ambient methane. In ground-based simulations of the aerial leak detection scenario, we demonstrated the ability to measure methane leaks within the laser beam path when it illuminates a topographic target 2000 m away. We also demonstrated simulated leak detection from ranges of 200 m using the 25 cm optical receiver without the fiber amplifier.

Richard T. Wainner; Mickey B. Frish; B. David Green; Matthew C. Laderer; Mark G. Allen; Joseph R. Morency

2006-12-31T23:59:59.000Z

172

Leak Detection and H2 Sensor Development  

DOE Green Energy (OSTI)

Low-cost, durable, and reliable Hydrogen safety sensor for vehicle, stationary, and infrastructure applications. A new zirconia, electrochemical-based sensor technology is being transitioned out of the laboratory and into an advanced testing phase for vehicular and stationary H{sub 2} safety applications. Mixed potential sensors are a class of electrochemical devices that develop an open-circuit electromotive force due to the difference in the kinetics of the redox reactions of various gaseous species at each electrode/electrolyte/gas interface, referred to as the triple phase boundary (TPB). Therefore, these sensors have been considered for the sensing of various reducible or oxidizable gas species in the presence of oxygen. Based on this principle, a unique sensor design was developed by LANL and LLNL. The uniqueness of this sensor derives from minimizing heterogeneous catalysis (detrimental to sensor response) by avoiding gas diffusion through a catalytically active material and minimizing diffusion path to the TPB. Unlike the conventional design of these devices that use a dense solid electrolyte and porous thin film electrodes (similar to the current state-of-the-art zirconia-based sensors and fuel cells), the design of this sensor uses dense electrodes and porous electrolytes. Such a sensor design facilitates a stable and reproducible device response, since dense electrode morphologies are easy to reproduce and are significantly more stable than the conventional porous morphologies. Moreover, these sensors develop higher mixed potentials since the gas diffusion is through the less catalytically active electrolyte than the electrode. Lastly, the choice of electrodes is primarily based on their O2 reduction kinetics and catalytic properties vis-a-vis the target gas of interest.

Brosha, Eric L. [Los Alamos National Laboratory

2012-07-10T23:59:59.000Z

173

Measuring forest canopy height using a combination of lidar and aerial photography data  

E-Print Network (OSTI)

It has been demonstrated that the height of forest canopies can be measured with a good accuracy using small footprint lidars. This is essentially accomplished by subtracting the last return altitude (ground) from the corresponding first return altitude (canopy surface). The technique is considered superior to photogrammetric methods mainly because the ground level, which is difficult to see on aerial photos of densely forested areas, can be well identified using small footprint lidars. However, lidar cannot be used to characterized past forest states, while these can be assessed, and photogrammetically measured, in the wealth of historical aerial photographs most developed countries possess. Our goal is to replace the first return lidar data by altitude models derived from aerial photos in order to map forest canopy height changes of the past decades. This paper presents the first methodological steps which consist in comparing canopy heights obtained from lidar data only to a combination of lidar and photogrammetry data. The lidar data was acquired over an area of the boreal forest in Quebec, Canada, in 1998, using Optech’s ALTM1020 flying at an altitude of 700 m. Two stereo-pairs of aerial black and white photographs were used: 1) a pair of 1:15,000 photos taken in 1994, and 2) a pair of 1:40,000 photos taken in 1998. A lidar canopy height model (CHM) was created by subtracting ground altitudes from canopy altitudes. Aerial photo altitude models were derived using the image correlation methods of Virtuozo 3.2 software. The ground level altitudinal fit between the aerial photo altitude model and the lidar data was checked on rock outcrops. A photo CHM was created by subtracting the lidar ground altitude model from the aerial photo altitude model. The photo CHM and the lidar CHM show a good degree of correlation.

Benoît A. St-onge; Nora Achaichia

2001-01-01T23:59:59.000Z

174

Real-time method for establishing a detection map for a network of sensors  

DOE Patents (OSTI)

A method for establishing a detection map of a dynamically configurable sensor network. This method determines an appropriate set of locations for a plurality of sensor units of a sensor network and establishes a detection map for the network of sensors while the network is being set up; the detection map includes the effects of the local terrain and individual sensor performance. Sensor performance is characterized during the placement of the sensor units, which enables dynamic adjustment or reconfiguration of the placement of individual elements of the sensor network during network set-up to accommodate variations in local terrain and individual sensor performance. The reconfiguration of the network during initial set-up to accommodate deviations from idealized individual sensor detection zones improves the effectiveness of the sensor network in detecting activities at a detection perimeter and can provide the desired sensor coverage of an area while minimizing unintentional gaps in coverage.

Nguyen, Hung D; Koch, Mark W; Giron, Casey; Rondeau, Daniel M; Russell, John L

2012-09-11T23:59:59.000Z

175

The potential of LIDAR as an antisubmarine warfare sensor.  

E-Print Network (OSTI)

??Traditionally, antisubmarine warfare (ASW) has been dominated by acoustic sensors, active and passive. Ending the Cold War, the ASW forces have refocused towards a theatre… (more)

Birkeland, John Olav

2009-01-01T23:59:59.000Z

176

Aircraft Cabin Environmental Quality Sensors  

E-Print Network (OSTI)

for ACEQ sensors than for chem-bio sensors 1 Under groundlocations In contrast to chem-bio sensors, false positives (or Implementation, Part 1: Chem. -Bio-Sensors, ACER Report,

Gundel, Lara

2010-01-01T23:59:59.000Z

177

Giant magnetoresistive sensor  

DOE Patents (OSTI)

A magnetoresistive sensor element with a three-dimensional micro-architecture is capable of significantly improved sensitivity and highly localized measurement of magnetic fields. The sensor is formed of a multilayer film of alternately magnetic and nonmagnetic materials. The sensor is optimally operated in a current perpendicular to plane mode. The sensor is useful in magnetic read/write heads, for high density magnetic information storage and retrieval.

Stearns, Daniel G. (Los Altos, CA); Vernon, Stephen P. (Pleasanton, CA); Ceglio, Natale M. (Livermore, CA); Hawryluk, Andrew M. (Modesto, CA)

1999-01-01T23:59:59.000Z

178

Digital Sensor Technology  

SciTech Connect

The nuclear industry has been slow to incorporate digital sensor technology into nuclear plant designs due to concerns with digital qualification issues. However, the benefits of digital sensor technology for nuclear plant instrumentation are substantial in terms of accuracy, reliability, availability, and maintainability. This report demonstrates these benefits in direct comparisons of digital and analog sensor applications. It also addresses the qualification issues that must be addressed in the application of digital sensor technology.

Ted Quinn; Jerry Mauck; Richard Bockhorst; Ken Thomas

2013-07-01T23:59:59.000Z

179

Distribution Sensors  

Science Conference Proceedings (OSTI)

The strong industry push toward grid modernization is based on several advantages. Specifically, the grid will enable customers to actively determine their energy choices, accommodate customers’ generation and storage options, and provide the higher reliability and consistent power quality required by today’s digital economy. These benefits will be realized when the industry optimizes grid operation and its use of present and future assets. Future power grids will become reality by ...

2013-12-19T23:59:59.000Z

180

Online distributed sensor selection  

Science Conference Proceedings (OSTI)

A key problem in sensor networks is to decide which sensors to query when, in order to obtain the most useful information (e.g., for performing accurate prediction), subject to constraints (e.g., on power and bandwidth). In many applications the utility ... Keywords: approximation algorithms, distributed multiarmed bandit algorithms, sensor networks, submodular optimization

Daniel Golovin; Matthew Faulkner; Andreas Krause

2010-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

High temperature sensor  

DOE Patents (OSTI)

A high temperature sensor includes a pair of electrical conductors separated by a mass of electrical insulating material. The insulating material has a measurable resistivity within the sensor that changes in relation to the temperature of the insulating material within a high temperature range (1,000 to 2,000 K.). When required, the sensor can be encased within a ceramic protective coating.

Tokarz, Richard D. (West Richland, WA)

1982-01-01T23:59:59.000Z

182

Sensor mount assemblies and sensor assemblies  

DOE Patents (OSTI)

Sensor mount assemblies and sensor assemblies are provided. In an embodiment, by way of example only, a sensor mount assembly includes a busbar, a main body, a backing surface, and a first finger. The busbar has a first end and a second end. The main body is overmolded onto the busbar. The backing surface extends radially outwardly relative to the main body. The first finger extends axially from the backing surface, and the first finger has a first end, a second end, and a tooth. The first end of the first finger is disposed on the backing surface, and the tooth is formed on the second end of the first finger.

Miller, David H. (Redondo Beach, CA)

2012-04-10T23:59:59.000Z

183

Biological investigations of the Sandia National Laboratories Sol se Mete Aerial Cable Facility  

Science Conference Proceedings (OSTI)

This report provides results of a comprehensive biological field survey performed on the Sandia National Laboratories Aerial Cable Facility, at the east end of Kirtland Air Force Base (KAFB), Bernalillo County, New Mexico. This survey was conducted late September through October, 1991. ACF occupies a 440-acre tract of land withdrawn by the US Forest Service (USFS) for use by KAFB, and in turn placed under operational control of SNL by the Department of Energy (DOE). All land used by SNL for ACF is part of a 15,851-acre tract of land withdrawn by the US Forest Service. In addition, a number of different organizations use the 15,851-acre area. The project area used by SNL encompasses portions of approximately six sections (3,840 acres) of US Forest Service land located within the foothills of the west side of the Manzano Mountains (East Mesa). The biological study area is used by the KAFB, the US Department of Interior, and SNL. This area includes: (1) Sol se Mete Springs and Canyon, (2) East Anchor Access Road, (3) East Anchor Site, (4) Rocket Sled Track, (5) North Arena, (6) East Instrumentation Site and Access Road, (7) West Anchor Access Road, (8) West Anchor Site, (9) South Arena, (10) Winch Sites, (11) West Instrumentation Sites, (12) Explosive Assembly Building, (13) Control Building, (14) Lurance Canyon Road and vicinity. Although portions of approximately 960 acres of withdrawn US Forest Service land have been altered, only 700 acres have been disturbed by activities associated with ACF; approximately 2,880 acres consist of natural habitat. Absence of grazing by livestock and possibly native ungulates, and relative lack of human disturbance have allowed this area to remain in a more natural vegetative state relative to the condition of private range lands throughout New Mexico. This report evaluates threatened and endangered species found on ACF, as well as a comprehensive assessment of biological habitats.

Sullivan, R.M.

1994-10-01T23:59:59.000Z

184

ISDSN Sensor System Phase One Test Report  

Science Conference Proceedings (OSTI)

This Phase 1 Test Report documents the test activities and results completed for the Idaho National Laboratory (INL) sensor systems that will be deployed in the meso-scale test bed (MSTB) at Florida International University (FIU), as outlined in the ISDSN-MSTB Test Plan. This report captures the sensor system configuration tested; test parameters, testing procedure, any noted changes from the implementation plan, acquired test data sets, and processed results.

Gail Heath

2011-09-01T23:59:59.000Z

185

Gas sensor technology at Sandia National Laboratories: Catalytic gate, Surface Acoustic Wave and Fiber Optic Devices  

DOE Green Energy (OSTI)

Sandia`s gas sensor program encompasses three separate electronic platforms: Acoustic Wave Devices, Fiber Optic Sensors and sensors based on silicon microelectronic devices. A review of most of these activities was presented recently in a article in Science under the title ``Chemical Microsensors.`` The focus of the program has been on understanding and developing the chemical sensor coatings that are necessary for using these electronic platforms as effective chemical sensors.

Hughes, R.C.; Moreno, D.J.; Jenkins, M.W.; Rodriguez, J.L.

1993-10-01T23:59:59.000Z

186

DESIGN OF SMALL SCALE GAS TURBINE SYSTEMS FOR UNMANNED-AERIAL VEHICLES  

E-Print Network (OSTI)

DESIGN OF SMALL SCALE GAS TURBINE SYSTEMS FOR UNMANNED-AERIAL VEHICLES (AERSP 597/497-K) SPRING 814 865 9871 cxc11@psu.edu Summary : The proposed course is a three-credit gas turbine design course will be evaluated against (agreed) deadlines by the instructor. A number of lecturers from the gas turbine industry

Camci, Cengiz

187

Cooperative Large Area Surveillance with a Team of Aerial Mobile Robots for Long Endurance Missions  

Science Conference Proceedings (OSTI)

This paper proposes a distributed approach to solve long duration area surveillance missions with a team of aerial robots, taking into account communication constraints. The system, based on "one-to-one" coordination, minimizes the probability that any ... Keywords: Area surveillance, Cooperation, Coordination, Decentralized systems, Long endurance missions, Multi-UAS systems

Jose Joaquin Acevedo; Begoña C. Arrue; Ivan Maza; Anibal Ollero

2013-04-01T23:59:59.000Z

188

Deposition of Aerially Applied BT in an Oak Forest and Its Prediction with the FSCBG Model  

Science Conference Proceedings (OSTI)

Data are provided from 17 single-swath aerial spray trials that were conducted over a fully leafed, 16-m tall, mixed oak forest. The distribution of cross-swath spray deposits was sampled at the top of the canopy and below the canopy. ...

Dean E. Anderson; David R. Miller; Yansen Wang; William G. Yendol; Karl Mierzejewski; Michael L. McManus

1992-12-01T23:59:59.000Z

189

Flying eyes: free-space content creation using autonomous aerial vehicles  

Science Conference Proceedings (OSTI)

Highly effective 3D-camerawork techniques that do not have physical limitations have been developed for creating three-dimensional (3D) computer games. Recent techniques used for real-world visual content creation, such as those used for sports broadcasting ... Keywords: autonomous camerawork, unmanned aerial vehicle, video content

Keita Higuchi; Yoshio Ishiguro; Jun Rekimoto

2011-05-01T23:59:59.000Z

190

Improving Endurance of Autonomous Aerial Vehicles through Intelligent Service-Station Placement  

E-Print Network (OSTI)

Improving Endurance of Autonomous Aerial Vehicles through Intelligent Service-Station Placement Roy and the nature of the application. We present these algorithms in the context of a generic survey application location per flight, and not at more general survey applications such as search and rescue, surveillance

Minnesota, University of

191

Wind-Energy based Path Planning For Electric Unmanned Aerial Vehicles Using Markov Decision Processes  

E-Print Network (OSTI)

Wind-Energy based Path Planning For Electric Unmanned Aerial Vehicles Using Markov Decision wind-energy is one possible way to ex- tend flight duration for Unmanned Arial Vehicles. Wind-energy sources of wind energy available to exploit for this problem [5]: 1) Vertical air motion, such as thermal

Smith, Ryan N.

192

Synoptic Aerial Surveys and Abundance Estimates for Ice-associated Seals in US and Russian Waters Michael Cameron, Peter Boveng, Erin Moreland and Jay Ver Hoef  

E-Print Network (OSTI)

Synoptic Aerial Surveys and Abundance Estimates for Ice-associated Seals in US and Russian Waters synoptic aerial surveys of the eastern Bering Sea in tandem with Russian researchers employed to survey. Testing a ship-based Unmanned Aerial System (UAS) for surveying the Bering Sea pack ice. AFSC Quarterly

193

Embedded Sensor Technology Evaluation  

Science Conference Proceedings (OSTI)

Fiber Sensors are poised to be used in future LEPs. The three primary vehicles for fiber sensors are Department 1, Joint Test Assembly (JTA), and Shelf Life (SL). The National Security Enterprise (NSE) community plans to incorporate optical sensors or systems into these vehicles. Additionally, hermetic sealing of optical systems is required if optical technology is to be integrated into LEP and future weapons applications. Hermetic seals will reduce the long-term risk of contamination which can degrade or incapacitate optical components. This study was funded through the Kansas City Plant's (KCP) ESC work package between 2007 and 2009 to develop optical sensors, identify commercial fiber sensors and hermetic connectors, and qualify these sensors against likely weapon lifetime environments.

Kennedy, Chris

2010-01-12T23:59:59.000Z

194

Polar Bear Aerial Survey in the Eastern Chukchi Sea: A Pilot Study  

E-Print Network (OSTI)

Bering Seas population, shared with Russia. Currently a reliable population estimate for the Chukchi/Bering Seas population does not exist. Land-based aerial and mark-recapture population surveys may not be possible in the Chukchi Sea because variable ice conditions, the limited range of helicopters, extremely large polar bear home ranges, and severe weather conditions may limit access to remote areas. Thus line-transect aerial surveys from icebreakers may be the best available tool to monitor this polar bear stock. In August 2000, a line-transect survey was conducted in the eastern Chukchi Sea and western Beaufort Sea from helicopters based on a U.S. Coast Guard icebreaker under the “Ship of Opportunity ” program. The objectives of this pilot study were to estimate polar bear density in the eastern Chukchi and western Beaufort Seas and to assess the logistical feasibility of using shipbased aerial surveys to develop polar bear population estimates. Twenty-nine polar bears in 25 groups were sighted on 94 transects (8257 km). The density of bears was estimated as 1 bear per 147 km 2 (CV = 38%). Additional aerial surveys in late fall, using dedicated icebreakers, would be required to achieve the number of sightings, survey effort, coverage, and precision needed for more effective monitoring of population trends in the Chukchi Sea. Key words: aerial survey, Ursus maritimus, polar bear, Beaufort Sea, Chukchi Sea, line transect, icebreaker RÉSUMÉ. L’Alaska a deux populations d’ours polaires: celle du sud de la mer de Beaufort, commune avec le Canada, et celle de la mer des Tchouktches / mer de Béring, commune avec la Russie. À l’heure actuelle, on ne possède pas d’estimation fiable de la population de la mer des Tchouktches / mer de Béring. En raison des conditions variables de la glace, de la portée limitée

Susanne Kalxdorff; Geoff York

2003-01-01T23:59:59.000Z

195

Optical waveguide tamper sensor technology  

DOE Green Energy (OSTI)

Dielectric optical waveguides exhibit properties that are well suited to sensor applications. They have low refractive index and are transparent to a wide range of wavelengths. They can react with the surrounding environment in a variety of controllable ways. In certain sensor applications, it is advantageous to integrate the dielectric waveguide on a semiconductor substrate with active devices. In this work, we demonstrate a tamper sensor based on dielectric waveguides that connect epitaxial GaAs-GaAlAs sources and detectors. The tamper sensing function is realized by attaching particles of absorbing material with high refractive index to the surface of the waveguides. These absorbers are then attached to a lid or cover, as in an integrated circuit package or multi-chip module. The absorbers attenuate the light in the waveguides as a function of absorber interaction. In the tamper indicating mode, the absorbers are placed randomly on the waveguides, to form a unique attenuation pattern that is registered by the relative signal levels on the photodetectors. When the lid is moved, the pattern of absorbers changes, altering the photodetector signals. This dielectric waveguide arrangement is applicable to a variety of sensor functions, and specifically can be fabricated as a chemical sensor by the application of cladding layers that change their refractive index and/or optical absorption properties upon exposure to selected chemical species. An example is found in palladium claddings that are sensitive to hydrogen. A description of designs and a basic demonstration of the tamper sensing and chemical sensing functions is described herein.

Carson, R.F.; Butler, M.A.; Sinclair, M.B. [and others

1997-03-01T23:59:59.000Z

196

New functional polymers for sensors, smart materials and solar cells  

E-Print Network (OSTI)

Organic polymers can be used as the active component of sensors, smart materials, chemical-delivery systems and the active layer of solar cells. The rational design and modification of the chemical structure of polymers ...

Lobez Comeras, Jose Miguel

2012-01-01T23:59:59.000Z

197

A new approach for integrated coverage and connectivity in wireless sensor networks  

Science Conference Proceedings (OSTI)

An effective approach for energy conservation in wireless sensor networks is scheduling sleep intervals for extraneous nodes while the remaining nodes stay active to provide continuous service. For the sensor network to operates successfully, the active ... Keywords: Connectivity, Coverage, Deployment, Sensor network

Seyed Hossein Khasteh; Saeed Bagheri Shouraki; Nima Hajiabdorahim; Ehsan Dadashnialehi

2012-12-01T23:59:59.000Z

198

Unmanned Aerial Vehicle (UAV) Dynamic-Tracking Directional Wireless Antennas for Low Powered Applications that Require Reliable Extended Range Operations in Time Critical Scenarios  

Science Conference Proceedings (OSTI)

The proven value of DOD Unmanned Aerial Vehicles (UAVs) will ultimately transition to National and Homeland Security missions that require real-time aerial surveillance, situation awareness, force protection, and sensor placement. Public services first responders who routinely risk personal safety to assess and report a situation for emergency actions will likely be the first to benefit from these new unmanned technologies. ‘Packable’ or ‘Portable’ small class UAVs will be particularly useful to the first responder. They require the least amount of training, no fixed infrastructure, and are capable of being launched and recovered from the point of emergency. All UAVs require wireless communication technologies for real- time applications. Typically on a small UAV, a low bandwidth telemetry link is required for command and control (C2), and systems health monitoring. If the UAV is equipped with a real-time Electro-Optical or Infrared (EO/Ir) video camera payload, a dedicated high bandwidth analog/digital link is usually required for reliable high-resolution imagery. In most cases, both the wireless telemetry and real-time video links will be integrated into the UAV with unity gain omni-directional antennas. With limited on-board power and payload capacity, a small UAV will be limited with the amount of radio-frequency (RF) energy it transmits to the users. Therefore, ‘packable’ and ‘portable’ UAVs will have limited useful operational ranges for first responders. This paper will discuss the limitations of small UAV wireless communications. The discussion will present an approach of utilizing a dynamic ground based real-time tracking high gain directional antenna to provide extend range stand-off operation, potential RF channel reuse, and assured telemetry and data communications from low-powered UAV deployed wireless assets.

Scott G. Bauer; Matthew O. Anderson; James R. Hanneman

2005-10-01T23:59:59.000Z

199

High-temperature sensor  

DOE Patents (OSTI)

A high temperature sensor is described which includes a pair of electrical conductors separated by a mass of electrical insulating material. The insulating material has a measurable resistivity within the sensor that changes in relation to the temperature of the insulating material within a high temperature range (1000 to 2000/sup 0/K). When required, the sensor can be encased within a ceramic protective coating.

Not Available

1981-01-29T23:59:59.000Z

200

Remote electrochemical sensor  

DOE Patents (OSTI)

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.

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

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Energy efficient sensor node implementations  

Science Conference Proceedings (OSTI)

In this paper, we discuss a low power embedded sensor node architecture we are developing for distributed sensor network systems deployed in a natural environment. In particular, we examine the sensor node for energy efficient processing-at-the-sensor. ... Keywords: acoustic, distributed sensor network (dsn), dsp, fpga, seismic, vehicle classification, video

Jan R. Frigo; Eric Y. Raby; Sean M. Brennan; Christophe Wolinski; Charles Wagner; Francois Charot; Edward Rosten; Vinod K. Kulathumani

2010-02-01T23:59:59.000Z

202

Sensors, Electronics & Instrumentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Sensors, Electronics & Instrumentation Sensors, Electronics & Instrumentation Sensors, Electronics & Instrumentation Express Licensing Acoustic Concentration Of Particles In Fluid Flow Express Licensing Apparatus And Method For Hydrogen And Oxygen Mass Spectrometry Of The Terrestrial Magnetosphere Express Licensing Apparatus And Method For Temperature Correction And Expanded Count Rate Of Inorganic Scintillation Detectors Express Licensing Composition and method for removing photoresist materials from electronic components Express Licensing Corrosion Test Cell For Bipolar Plates Express Licensing Cylindrical Acoustic Levitator/Concentrator Negotiable Licensing Electrochemical Apparatus with Disposable and Modifiable Parts Express Licensing Foil electron multiplier Express Licensing Hydrogen Sensor

203

MTDC Safety Sensor Technology  

NLE Websites -- All DOE Office Websites (Extended Search)

MTDC Safety Sensor Technology MTDC Safety Sensor Technology Background Beyond the standard duty cycle data collection system used in the Department of Energy's Medium Truck Duty Cycle program, additional sensors were installed on three test vehicles to collect several safety-related signals of interest to the Federal Motor Carrier Safety Administration. The real-time brake stroke, tire pressure, and weight information obtained from these sensors is expected to make possible a number of safety-related analyses such as determining the frequency and severity of braking events and tracking tire pressure changes over time. Because these signals are posted to the vehicle's databus, they also have the potential to be

204

Fiber optic geophysical sensors  

DOE Patents (OSTI)

This invention is comprised of a fiber optic geophysical sensor 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 figs.

Homuth, E.F.

1990-01-01T23:59:59.000Z

205

Fiber optic geophysical sensors  

DOE Patents (OSTI)

This invention is comprised of a fiber optic geophysical sensor 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 figs.

Homuth, E.F.

1990-12-31T23:59:59.000Z

206

PNNL: Available Technologies: Sensors  

Non-Contact Sensor for Measuring the Density and Speed of Sound of a Liquid Contained in a Pipeline or Vessel; Real-Time Fluid Viscometer in Contact ...

207

Clip-on wireless wearable microwave sensor for ambulatory cardiac monitoring  

E-Print Network (OSTI)

We present a new type of non-contact sensor for use in ambulatory cardiac monitoring. The sensor operation is based on a microwave Doppler technique; however, instead of detecting the heart activity from a distance, the ...

Fletcher, Richard Ribon

208

Electrochemical Hydrogen Sensor for Safety Monitoring  

DOE Green Energy (OSTI)

A hydrogen safety sensor is presented which provides high sensitivity and fast response time when operated in air. The target application for the sensor is external deployment near systems using or producing high concentrations of hydrogen. The sensor is composed of a catalytically active metal-oxide sensing electrode and a noble metal reference electrode attached to an yttria-stabilized zirconia (YSZ) electrolyte. The sensing approach is based on the difference in oxidation rate of hydrogen on the different electrode materials. Results will be presented for a sensor using a sensing electrode of tin-doped indium oxide (ITO). Response to H{sub 2}, and cross-sensitivity to hydrocarbon and H{sub 2}O are discussed.

Martin, L P; Pham, A-Q; Glass, R S

2003-04-25T23:59:59.000Z

209

On the quality and value of information in sensor networks  

Science Conference Proceedings (OSTI)

The increasing use of sensor-derived information from planned, ad-hoc, and/or opportunistically deployed sensor networks provides enhanced visibility to everyday activities and processes, enabling fast-paced data-to-decision in personal, social, civilian, ... Keywords: AHP, Internet of things, IoT, QoI, Quality of information, VoI, analytic hierarchy process, information systems, metadata, provenance, sensor information fusion, value of information

Chatschik Bisdikian, Lance M. Kaplan, Mani B. Srivastava

2013-07-01T23:59:59.000Z

210

Hydrocarbon/Total Combustibles Sensor  

the invention is an electrochemical hydrocarbon sensor that is more reliable and reproducible than any other hydrocarbon sensor on the market today. The patented method for producing the sensor ensures reproducibility and reduces the need for ...

211

An Aerial Radiological Survey of the Yucca Mountain Project Proposed Land Withdrawal and Adjacent Areas  

SciTech Connect

An aerial radiological survey of the Yucca Mountain Project (YMP) proposed land withdrawal was conducted from January to April 2006, and encompassed a total area of approximately 284 square miles (73,556 hectares). The aerial radiological survey was conducted to provide a sound technical basis and rigorous statistical approach for determining the potential presence of radiological contaminants in the Yucca Mountain proposed Land withdrawal area. The survey site included land areas currently managed by the Bureau of Land Management, the U.S. Air Force as part of the Nevada Test and Training Range or the U.S. Department of Energy (DOE), National Nuclear Security Administration Nevada Site Office (NNSA/NSO) as part of the Nevada Test Site (NTS). The survey was flown at an approximate ground speed of 70 knots (36 meters per second), at a nominal altitude of 150 ft (46 m) above ground level, along a set of parallel flight lines spaced 250 ft (76 m) apart. The flight lines were oriented in a north-south trajectory. The survey was conducted by the DOE NNSA/NSO Remote Sensing Laboratory-Nellis, which is located in Las Vegas, Nevada. The aerial survey was conducted at the request of the DOE Office of Civilian Radioactive Waste Management. The primary contaminant of concern was identified by YMP personnel as cesium-137 ({sup 137}Cs). Due to the proposed land withdrawal area's proximity to the historical Nuclear Rocket Development Station (NRDS) facilities located on the NTS, the aerial survey system required sufficient sensitivity to discriminate between dispersed but elevated {sup 137}Cs levels from those normally encountered from worldwide fallout. As part of that process, the survey also measured and mapped the exposure-rate levels that currently existed within the survey area. The inferred aerial exposure rates of the natural terrestrial background radiation varied from less than 3 to 22 microroentgens per hour. This range of exposure rates was primarily due to the surface geological features within the survey area. The survey area has extensive areas of desert valleys, mountain ranges, extinct volcanic cones, and old lava flows. With the exception of five areas identified within the NRDS boundaries (discussed later in this report), there were no areas within the survey that exceeded aerial survey minimum detectable concentration levels of 0.4 through 0.7 picocuries per gram (pCi/g). The {sup 137}Cs levels do not exceed typical worldwide fallout levels for the continental United States.

Craig Lyons, Thane Hendricks

2006-07-01T23:59:59.000Z

212

Froth height level sensor  

DOE Patents (OSTI)

A single sensor, comprised of a tube located near the foaming liquid, and another well away from the first, are used to determine the existence of foam in the vicinity of the probe. Two sensors a known distance apart can be used to locate the froth assuming a uniform froth density. The present invention utilizes the pressure differential existing between process chamber ambient pressure and the froth pressure to determine the existence of a froth and its location. Where froth density is not constant, multiple sensors at differing heights with respect to each other, or a single movable sensor, are used. Information derived using the multiple or movable sensor yields unambiguous froth density and height data.

Glaser, J.W.; Holmes, L.; Upadhye, R.S.; Wilder, J.G.

1994-12-31T23:59:59.000Z

213

Energy harvesting Wheel Speed Sensor.  

E-Print Network (OSTI)

??This thesis presents a prototype energy harvesting autonomous sensor, called the Autonomous Wheel Speed Sensor (AWSS), that is targeted for operation in the Electronic Braking… (more)

Parthasarathy, Dhasarathy

2012-01-01T23:59:59.000Z

214

Field Guide: Transmission Line Aerial Marking and Lighting  

Science Conference Proceedings (OSTI)

Electric transmission lines and wild birds must co-exist. Power lines traverse birds' flight routes, birds commonly roost on lines and poles, and birds make their nests—the largest of which weigh thousands of pounds—on transmission structures. Some avian activities can have deleterious effects on outdoor structures and transmission—for example, nests have been known to collapse and span critical clearances during storms, resulting in outages. Accordingly, it is important for ...

2013-11-22T23:59:59.000Z

215

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

SciTech Connect

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.

Robert Paul Breckenridge

2007-05-01T23:59:59.000Z

216

Calibration Accuracy Of Aerial Multispectral Reflectance Images And Estimation Of Error Sources  

E-Print Network (OSTI)

: We have performed a systematic study of the calibration accuracy of multispectral aerial reflectance images. The study is part of the improvement of change detection for aerial and satellite multispectral images. It is based on (a) a multitemporal image data set from the multispectral airborne scanner Daedalus AADS 1268 and (b) simultaneously made ground based hyperspectral reflectance measurements. Reflectance images were obtained from the raw images by processing with the program package SENSAT-5, using standard urban atmospheres in the MODTRAN code. The systematic uncertainty of the resulting reflectance spectra is mainly due to the uncertainty in the atmospheric parameters. It can be reduced by fitting the Daedalus spectra to ground truth hyperspectral reflectance measurements of selected surfaces. The resulting uncertainty oe ae =ae of the reflectance ae is estimated to be 11.0 % on average. KEY WORDS: Remote sensing, Reflectance, Error sources 1 INTRODUCTION Remotely sensed ...

Andre Rothkirch; Martin Kollewe; Hartwig Spitzer

1998-01-01T23:59:59.000Z

217

An aerial radiological survey of Project Rulison and surrounding area, Battlement Creek Valley, Colorado  

SciTech Connect

An aerial radiological survey was conducted over the Project Rulison site, 40 miles (64 kilometers) northeast of Grand Junction, Colorado, from July 6 through July 12, 1993. Parallel lines were flown at intervals of 250 feet (76 meters) over a 6.5-square-mile (17-square-kilometer) area at a 200-foot (61-meter) altitude surrounding Battlement Creek Valley. The gamma energy spectra obtained were reduced to an exposure rate contour map overlaid on a high altitude aerial photograph of the area. The terrestrial exposure rate varied from 3.5 to 12.5 {mu}R/h (excluding cosmic) at 1 meter above ground level. No anomalous or man-made isotopes were found.

NONE

1995-08-01T23:59:59.000Z

218

An aerial radiological survey of the Durango, Colorado uranium mill tailings site and surrounding area  

SciTech Connect

An aerial radiological survey of Durango, Colorado, including the inactive uranium mill tailings piles located southwest of the town, was conducted during August 25--29, 1980, for the Department of Energy's Environmental and Safety Engineering Division. Areas of radiation exposure rates higher than the local background, which was about 15 microrentgens per hour ({mu}R/h), were observed directly over and to the south of the mill tailings piles, over a cemetery, and at two spots near the fairgrounds. The rapidly changing radiation exposure rates at the boundaries of the piles preclude accurate extrapolation of aerial radiological data to ground level exposure rates in their immediate vicinity. Estimated radiation exposure rates close to the piles, however, approached 30 times background, or about 450 {mu}R/h. Radiation exposure rates in a long area extending south from the tailings piles were about 25 {mu}R/h.

Hilton, L.K.

1981-06-01T23:59:59.000Z

219

Quantifying Aerial Concentrations of Maize Pollen in the Atmospheric Surface Layer Using Remote-Piloted Airplanes and Lagrangian Stochastic Modeling  

Science Conference Proceedings (OSTI)

The extensive adoption of genetically modified crops has led to a need to understand better the dispersal of pollen in the atmosphere because of the potential for unwanted movement of genetic traits via pollen flow in the environment. The aerial ...

Donald E. Aylor; Matthew T. Boehm; Elson J. Shields

2006-07-01T23:59:59.000Z

220

Measuring Logging Impacts on Forest Carbon Stocks Using Ground and Aerial-based Methods  

Science Conference Proceedings (OSTI)

The research conducted under this project contributes to EPRI member efforts to identify science-based, cost-effective methods to measure and monitor forest management carbon offsets. Specifically, this project tested the use of aerial photography to monitor forest carbon stock changes that result from logging in Ohio and Bolivia. This report covers all phases of the work under this contract and compares methods used in Ohio and Bolivia. It discusses the applicability of methods to the monitoring of dual...

2005-11-30T23:59:59.000Z

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

An aerial radiological survey of Naturita, Colorado and surrounding area. Date of survey: September 1981  

SciTech Connect

An aerial radiological survey of four areas in the vicinity of the inactive uranium mill tailings site at Naturita, Colorado was conducted in September 1981. The average background radiation exposure rate (normalized to 3 feet above the ground) was about 10 to 16 microroentgens per hour ({mu}R/h). Uranium ore or tailings were detected at Naturita, Nucla, East Vancorum, and the general region downriver and downwind from the former mill tailings site.

Jaffe, R.J.

1982-09-01T23:59:59.000Z

222

List of Lighting Controls/Sensors Incentives | Open Energy Information  

Open Energy Info (EERE)

Sensors Incentives Sensors Incentives Jump to: navigation, search The following contains the list of 493 Lighting Controls/Sensors Incentives. CSV (rows 1 - 493) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active AEP (Central and North) - CitySmart Program (Texas) Utility Rebate Program Texas Commercial Industrial Institutional Local Government Schools Boilers Central Air conditioners Chillers Comprehensive Measures/Whole Building Custom/Others pending approval Energy Mgmt. Systems/Building Controls Furnaces Heat pumps Lighting Lighting Controls/Sensors Motor VFDs Motors Roofs Windows Yes AEP (Central, North and SWEPCO) - Commercial Solutions Program (Texas) Utility Rebate Program Texas Commercial Industrial Institutional Local Government Nonprofit

223

Fidelity and yield in a volcano monitoring sensor network  

Science Conference Proceedings (OSTI)

We present a science-centric evaluation of a 19-day sensor network deployment at Reventador, an active volcano in Ecuador. Each of the 16 sensors continuously sampled seismic and acoustic data at 100 Hz. Nodes used an event-detection algorithm to trigger ...

Geoff Werner-Allen; Konrad Lorincz; Jeff Johnson; Jonathan Lees; Matt Welsh

2006-11-01T23:59:59.000Z

224

Review: From wireless sensor networks towards cyber physical systems  

Science Conference Proceedings (OSTI)

In the past two decades, a lot of research activities have been dedicated to the fields of mobile ad hoc network (MANET) and wireless sensor networks (WSN). More recently, the cyber physical system (CPS) has emerged as a promising direction to enrich ... Keywords: Cyber physical system, Internet technology, Mobile ad hoc network, Pervasive computing, Sensing and actuation, Wireless sensor network

Fang-Jing Wu; Yu-Fen Kao; Yu-Chee Tseng

2011-08-01T23:59:59.000Z

225

Analysis of the reasons for accidents and of protective measures against induced voltage on aerial electrical transmission lines  

SciTech Connect

The problem of safety during work on aerial transmission lines under an induced voltage is examined. Results are presented from a study of the causes of accidents over the last 20 years in electrical grids in this country. A determination of different levels of induced voltage on disconnected aerial transmission lines as a function of their grounding scheme is proposed. The order of magnitudes for each level are given, along with approximate expressions for calculating them.

Misrikhanov, M. Sh. [MES Tsentra (Russian Federation); Mirzaabdullaev, A. O. [Branch of JSC 'FSK EES'- Nizhegorodskoe PMES (Russian Federation)

2009-01-15T23:59:59.000Z

226

SC/51/SM11 AERIAL SURVEYS OF BELUGA WHALES IN COOK INLET, ALASKA,  

E-Print Network (OSTI)

The National Marine Mammal Laboratory (NMML), in cooperation with the NMFS Alaska Regional Office, the Alaska Beluga Whale Committee (ABWC) and the Cook Inlet Marine Mammal Council (CIMMC), conducted an aerial survey of the beluga whale population in Cook Inlet, Alaska, during 9-15 June 1998. The 39.4 hr survey was flown in a twin-engine, high-wing aircraft at an altitude of 244 m (800 ft) altitude and speed of 185 km/hr (100 kt) along a trackline 1.4 km from shore. This provided complete coverage of coastal areas around the entire inlet (1,388 km) one or more times and 1,320 km of transects across the inlet. Throughout most of this survey, a test of sighting rates was conducted with multiple independent observers on the coastal (left) side of the plane, where virtually all sightings occur. A single observer and a computer operator/data recorder were on the right side. After finding beluga groups, a series of aerial passes were made to allow at least two pairs of observers to make 4 or more counts of each group. The sum of the aerial estimates (using median counts from each site, not corrected for missed whales) ranged from 173 to 192 whales, depending on survey day. There were 57-109 belugas counted near the Susitna River, 42-93 in Knik Arm and 23-42 in Chickaloon Bay, but only one (dead) beluga whale was found in lower Cook Inlet.

David J. Rugh; Roderick C. Hobbs; Kim E. W. Shelden; Barbara A. Mahoney; Laura K. Litzky

1998-01-01T23:59:59.000Z

227

An aerial radiological survey of Technical Areas 2, 21, and 53 and surroundings, Los Alamos National Laboratory, Los Alamos, New Mexico  

SciTech Connect

An aerial radiological survey of the entire Los Alamos National Laboratory was flown in September 1982. The data from a part of the survey, Technical Areas 2, 21, and 53, are presented here along with pertinent data from an October 1975 survey of limited areas of Los Alamos. The data from Technical Area 15, another part of the survey, will be published in another report. Contour maps of the gamma survey data show some Cs-137 activity in Los Alamos Canyon as well as in DP Canyon beside TA-21. Some Be-7, Sb-124, and Co-58 apparently exist in the canyon immediately below the Los Alamos Meson Physics Facility (LAMPF) ponds. Estimates on the Cs-137 inventory in the canyons range from 210 mCi to 1270 mCi. An exposure rate contour map at 1 meter above ground level (AGL) was constructed from the gamma data and overlaid on an aerial photograph and map of the area. The terrestrial exposure rates ranged from 6{mu}R/h to about 18{mu}R/h. 25 figs., 3 tabs.

Fritzsche, A.E.

1990-09-01T23:59:59.000Z

228

Remote electrochemical sensor  

DOE Patents (OSTI)

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.

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

1997-10-14T23:59:59.000Z

229

RF current sensor  

DOE Patents (OSTI)

An RF sensor having a novel current sensing probe and a voltage sensing probe to measure voltage and current. The current sensor is disposed in a transmission line to link all of the flux generated by the flowing current in order to obtain an accurate measurement. The voltage sensor is a flat plate which operates as a capacitive plate to sense voltage on a center conductor of the transmission line, in which the measured voltage is obtained across a resistance leg of a R-C differentiator circuit formed by the characteristic impedance of a connecting transmission line and a capacitance of the plate, which is positioned proximal to the center conductor.

Moore, James A. (Powell, TN); Sparks, Dennis O. (Maryville, TN)

1998-11-10T23:59:59.000Z

230

Electrochemical micro sensor  

DOE Patents (OSTI)

A micro-amperometric electrochemical sensor for detecting the presence of a pre-determined species in a fluid material is disclosed. The sensor includes a smooth substrate having a thin coating of solid electrolytic material deposited thereon. The working and counter electrodes are deposited on the surface of the solid electrolytic material and adhere thereto. Electrical leads connect the working and counter electrodes to a potential source and an apparatus for measuring the change in an electrical signal caused by the electrochemical oxidation or reduction of the species. Alternatively, the sensor may be fabricated in a sandwich structure and also may be cylindrical, spherical or other shapes.

Setter, Joseph R. (Naperville, IL); Maclay, G. Jordan (Maywood, IL)

1989-09-12T23:59:59.000Z

231

Integrated optical tamper sensor  

DOE Patents (OSTI)

This invention consists of an monolithic optical tamper sensor, comprising an optical emitter and detector, connected by an optical waveguide and placed into the critical entry plane of an enclosed sensitive region, the tamper sensor having a myriad of scraps of a material optically absorbent at the wavelength of interest, such that when the absorbent material is in place on the waveguide, an unique optical signature can be recorded, but when entry is attempted into the enclosed sensitive region, the scraps of absorbent material will be displaced and the optical/electrical signature of the tamper sensor will change and that change can be recorded.

Carson, R.F.; Casalnuovo, S.A.

1991-12-31T23:59:59.000Z

232

Renewable-reagent electrochemical sensor  

DOE Patents (OSTI)

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).

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

1999-01-01T23:59:59.000Z

233

Renewable-reagent electrochemical sensor  

DOE Patents (OSTI)

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.

Wang, J.; Olsen, K.B.

1999-08-24T23:59:59.000Z

234

Integrated optical sensor  

SciTech Connect

An integrated optical sensor for arc welding having multifunction feedback control. The sensor, comprising generally a CCD camera and diode laser, is positioned behind the arc torch for measuring weld pool position and width, standoff distance, and post-weld centerline cooling rate. Computer process information from this sensor is passed to a controlling computer for use in feedback control loops to aid in the control of the welding process. Weld pool position and width are used in a feedback loop, by the weld controller, to track the weld pool relative to the weld joint. Sensor standoff distance is used in a feedback loop to control the contact tip to base metal distance during the welding process. Cooling rate information is used to determine the final metallurgical state of the weld bead and heat affected zone, thereby controlling post-weld mechanical properties.

Watkins, Arthur D. (Idaho Falls, ID); Smartt, Herschel B. (Idaho Falls, ID); Taylor, Paul L. (Idaho Falls, ID)

1994-01-01T23:59:59.000Z

235

Integrated optical sensor  

DOE Patents (OSTI)

An integrated optical sensor for arc welding having multifunction feedback control is described. The sensor, comprising generally a CCD camera and diode laser, is positioned behind the arc torch for measuring weld pool position and width, standoff distance, and post-weld centerline cooling rate. Computer process information from this sensor is passed to a controlling computer for use in feedback control loops to aid in the control of the welding process. Weld pool position and width are used in a feedback loop, by the weld controller, to track the weld pool relative to the weld joint. Sensor standoff distance is used in a feedback loop to control the contact tip to base metal distance during the welding process. Cooling rate information is used to determine the final metallurgical state of the weld bead and heat affected zone, thereby controlling post-weld mechanical properties. 6 figures.

Watkins, A.D.; Smartt, H.B.; Taylor, P.L.

1994-01-04T23:59:59.000Z

236

Capacitance pressure sensor  

DOE Patents (OSTI)

A microelectromechanical (MEM) capacitance pressure sensor integrated with electronic circuitry on a common substrate and a method for forming such a device are disclosed. The MEM capacitance pressure sensor includes a capacitance pressure sensor formed at least partially in a cavity etched below the surface of a silicon substrate and adjacent circuitry (CMOS, BiCMOS, or bipolar circuitry) formed on the substrate. By forming the capacitance pressure sensor in the cavity, the substrate can be planarized (e.g. by chemical-mechanical polishing) so that a standard set of integrated circuit processing steps can be used to form the electronic circuitry (e.g. using an aluminum or aluminum-alloy interconnect metallization).

Eaton, William P. (Tijeras, NM); Staple, Bevan D. (Albuquerque, NM); Smith, James H. (Albuquerque, NM)

2000-01-01T23:59:59.000Z

237

An Improved Humidity Sensor  

Science Conference Proceedings (OSTI)

A common feature of all capacitance humidity sensors is their undesirable hysteresis effect due to the unequal adsorption and desorption of water vapor on the surfaces of their dielectric porous materials. To eliminate this error, an improved ...

Shixuan Pang; Hartmut Graßl; Horst Jäger

1996-10-01T23:59:59.000Z

238

Complex pendulum biomass sensor  

DOE Patents (OSTI)

A complex pendulum system biomass sensor having a plurality of pendulums. The plurality of pendulums allow the system to detect a biomass height and density. Each pendulum has an angular deflection sensor and a deflector at a unique height. The pendulums are passed through the biomass and readings from the angular deflection sensors are fed into a control system. The control system determines whether adjustment of machine settings is appropriate and either displays an output to the operator, or adjusts automatically adjusts the machine settings, such as the speed, at which the pendulums are passed through the biomass. In an alternate embodiment, an entanglement sensor is also passed through the biomass to determine the amount of biomass entanglement. This measure of entanglement is also fed into the control system.

Hoskinson, Reed L. (Rigby, ID); Kenney, Kevin L. (Idaho Falls, ID); Perrenoud, Ben C. (Rigby, ID)

2007-12-25T23:59:59.000Z

239

Complex Event Detection in Extremely Resource-Constrained Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

Complex Events are sequences of sensor measurements indicating interesting or unusual activity in the monitored process. Such events are ubiquitous in a wide range of Wireless Sensor Network (WSN) applications, yet there does not exist a common mechanism ... Keywords: complex event detection, integer techniques, wireless sensor networks

Michael Zoumboulakis; George Roussos

2011-04-01T23:59:59.000Z

240

Intelligent light control using sensor networks  

Science Conference Proceedings (OSTI)

Increasing user comfort and reducing operation costs have always been two primary objectives of building operations and control strategies. Current building control strategies are unable to incorporate occupant level comfort and meet the operation goals ... Keywords: active sensing, intelligent buildings, light control, sensor networks

Vipul Singhvi; Andreas Krause; Carlos Guestrin; James H. Garrett, Jr.; H. Scott Matthews

2005-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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241

NOx Sensor Development  

SciTech Connect

NO{sub x} compounds, specifically NO and NO{sub 2}, are pollutants and potent greenhouse gases. Compact and inexpensive NO{sub x} sensors are necessary in the next generation of diesel (CIDI) automobiles to meet government emission requirements and enable the more rapid introduction of more efficient, higher fuel economy CIDI vehicles. Because the need for a NO{sub x} sensor is recent and the performance requirements are extremely challenging, most are still in the development phase. Currently, there is only one type of NO{sub x} sensor that is sold commercially, and it seems unlikely to meet more stringent future emission requirements. Automotive exhaust sensor development has focused on solid-state electrochemical technology, which has proven to be robust for in-situ operation in harsh, high-temperature environments (e.g., the oxygen stoichiometric sensor). Solid-state sensors typically rely on yttria-stabilized zirconia (YSZ) as the oxygen-ion conducting electrolyte and then target different types of metal or metal-oxide electrodes to optimize the response. Electrochemical sensors can be operated in different modes, including amperometric (a current is measured) and potentiometric (a voltage is measured), both of which employ direct current (dc) measurements. Amperometric operation is costly due to the electronics necessary to measure the small sensor signal (nanoampere current at ppm NO{sub x} levels), and cannot be easily improved to meet the future technical performance requirements. Potentiometric operation has not demonstrated enough promise in meeting long-term stability requirements, where the voltage signal drift is thought to be due to aging effects associated with electrically driven changes, both morphological and compositional, in the sensor. Our approach involves impedancemetric operation, which uses alternating current (ac) measurements at a specified frequency. The approach is described in detail in previous reports and several publications. Briefly, impedancemetric operation has shown the potential to overcome the drawbacks of other approaches, including higher sensitivity towards NO{sub x}, better long-term stability, potential for subtracting out background interferences, total NO{sub x} measurement, and lower cost materials and operation. Past LLNL research and development efforts have focused on characterizing different sensor materials and understanding complex sensing mechanisms. Continued effort has led to improved prototypes with better performance, including increased sensitivity (to less than 5 ppm) and long-term stability, with more appropriate designs for mass fabrication, including incorporation of an alumina substrate with an imbedded heater. Efforts in the last year to further improve sensor robustness have led to successful engine dynamometer testing with prototypes mounted directly in the engine manifold. Previous attempts had required exhaust gases to be routed into a separate furnace for testing due to mechanical failure of the sensor from engine vibrations. A more extensive cross-sensitivity study was also undertaken this last year to examine major noise factors including fluctuations in water, oxygen, and temperature. The quantitative data were then used to develop a strategy using numerical algorithms to improve sensor accuracy. The ultimate goal is the transfer of this technology to a supplier for commercialization. Due to the recent economic downturn, suppliers are demanding more comprehensive data and increased performance analysis before committing their resources to take the technology to market. Therefore, our NO{sub x} sensor work requires a level of technology development more thorough and extensive than ever before. The objectives 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 and designs and manufacturing metho

Woo, L Y; Glass, R S

2010-11-01T23:59:59.000Z

242

Wireless sensor network system for supporting nursing context-awareness  

Science Conference Proceedings (OSTI)

We developed a wireless sensor network system for supporting context-awareness of nursing activities in hospitals. Our system is aimed at automated recording of nursing work, providing context-aware services to nurses and visualising analytical results ...

Futoshi Naya; Ren Ohmura; Masakazu Miyamae; Haruo Noma; Kiyoshi Kogure; Michita Imai

2011-11-01T23:59:59.000Z

243

Programming storage-centric sensor networks with Squirrel  

Science Conference Proceedings (OSTI)

We present Squirrel, a stream-oriented programming framework for storage-centric sensor networks. The storage-centric paradigm---where storage operations prevail over communication activity---applies to scenarios such as batch data collection, delay-tolerant ...

Luca Mottola

2010-04-01T23:59:59.000Z

244

Biological Microsensors - Microsensors and Sensor Microsystems...  

NLE Websites -- All DOE Office Websites (Extended Search)

science to deliver prototype solutions in applications ranging from biodetection to photovoltaics. Sensor development includes discrete sensors and sensor arrays based on...

245

Sensors 2008, 8, 1613-1636 ISSN 1424-8220  

E-Print Network (OSTI)

by traditional inventories and survey, satellite/aerial remote sensing provides a cost-effective way in land and post-classification change detection of multitemporal high-spatial resolution Emerge aerial imagery

Vermont, University of

246

Assess the Efficacy of an Aerial Distant Observer Tool Capable of Rapid Analysis of Large Sections of Collector Fields: FY 2008 CSP Milestone Report, September 2008  

DOE Green Energy (OSTI)

We assessed the feasibility of developing an aerial Distant Observer optical characterization tool for collector fields in concentrating solar power plants.

Jorgensen, G.; Burkholder, F.; Gray, A.; Wendelin, T.

2009-02-01T23:59:59.000Z

247

Assessing responses of humpback whales to North Pacific Acoustic Laboratory (NPAL) transmissions: Results of 2001–2003 aerial surveys north of Kauai  

Science Conference Proceedings (OSTI)

Eight aerial surveys were flown north of the Hawaiian island of Kauai during 2001 when the North Pacific Acoustic Laboratory (NPAL) source was not transmitting

Joseph R. Mobley Jr.

2005-01-01T23:59:59.000Z

248

Sensor Characteristics Reference Guide  

Science Conference Proceedings (OSTI)

The Buildings Technologies Office (BTO), within the U.S. Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy (EERE), is initiating a new program in Sensor and Controls. The vision of this program is: • Buildings operating automatically and continuously at peak energy efficiency over their lifetimes and interoperating effectively with the electric power grid. • Buildings that are self-configuring, self-commissioning, self-learning, self-diagnosing, self-healing, and self-transacting to enable continuous peak performance. • Lower overall building operating costs and higher asset valuation. The overarching goal is to capture 30% energy savings by enhanced management of energy consuming assets and systems through development of cost-effective sensors and controls. One step in achieving this vision is the publication of this Sensor Characteristics Reference Guide. The purpose of the guide is to inform building owners and operators of the current status, capabilities, and limitations of sensor technologies. It is hoped that this guide will aid in the design and procurement process and result in successful implementation of building sensor and control systems. DOE will also use this guide to identify research priorities, develop future specifications for potential market adoption, and provide market clarity through unbiased information

Cree, Johnathan V.; Dansu, A.; Fuhr, P.; Lanzisera, Steven M.; McIntyre, T.; Muehleisen, Ralph T.; Starke, M.; Banerjee, Pranab; Kuruganti, T.; Castello, C.

2013-04-01T23:59:59.000Z

249

An aerial radiological survey of the Ames Laboratory and surrounding area, Ames, Iowa. Date of survey: July 1991  

Science Conference Proceedings (OSTI)

An aerial radiological survey of the Ames Laboratory and surrounding area in Ames, Iowa, was conducted during the period July 15--25, 1991. The purpose of the survey was to measure and document the terrestrial radiological environment at the Ames Laboratory and the surrounding area for use in effective environmental management and emergency response planning. The aerial survey was flown at an altitude of 200 feet (61 meters) along a series of parallel lines 350 feet (107 meters) apart. The survey encompassed an area of 36 square miles (93 square kilometers) and included the city of Ames, Iowa, and the Iowa State University. The results are reported as exposure rates at 1 meter above ground level (inferred from the aerial data) in the form of a gamma radiation contour map. Typical background exposure rates were found to vary from 7 to 9 microroentgens per hour ({mu}R/h). No anomalous radiation levels were detected at the Ames Laboratory. However, one anomalous radiation source was detected at an industrial storage yard in the city of Ames. In support of the aerial survey, ground-based exposure rate and soil sample measurements were obtained at several sites within the survey perimeter. The results of the aerial and ground-based measurements were found to agree within the expected uncertainty of {+-}15%.

Maurer, R.J.

1993-04-01T23:59:59.000Z

250

Distributed Sensor Coordination for Advanced Energy Systems  

Science Conference Proceedings (OSTI)

The ability to collect key system level information is critical to the safe, efficient and reli- able operation of advanced energy systems. With recent advances in sensor development, it is now possible to push some level of decision making directly to computationally sophisticated sensors, rather than wait for data to arrive to a massive centralized location before a decision is made. This type of approach relies on networked sensors (called “agents” from here on) to actively collect and process data, and provide key control deci- sions to significantly improve both the quality/relevance of the collected data and the as- sociating decision making. The technological bottlenecks for such sensor networks stem from a lack of mathematics and algorithms to manage the systems, rather than difficulties associated with building and deploying them. Indeed, traditional sensor coordination strategies do not provide adequate solutions for this problem. Passive data collection methods (e.g., large sensor webs) can scale to large systems, but are generally not suited to highly dynamic environments, such as ad- vanced energy systems, where crucial decisions may need to be reached quickly and lo- cally. Approaches based on local decisions on the other hand cannot guarantee that each agent performing its task (maximize an agent objective) will lead to good network wide solution (maximize a network objective) without invoking cumbersome coordination rou- tines. There is currently a lack of algorithms that will enable self-organization and blend the efficiency of local decision making with the system level guarantees of global decision making, particularly when the systems operate in dynamic and stochastic environments. In this work we addressed this critical gap and provided a comprehensive solution to the problem of sensor coordination to ensure the safe, reliable, and robust operation of advanced energy systems. The differentiating aspect of the proposed work is in shift- ing the focus towards “what to observe” rather than “how to observe” in large sensor networks, allowing the agents to actively determine both the structure of the network and the relevance of the information they are seeking to collect. In addition to providing an implicit coordination mechanism, this approach allows the system to be reconfigured in response to changing needs (e.g., sudden external events requiring new responses) or changing sensor network characteristics (e.g., sudden changes to plant condition). Outcome Summary: All milestones associated with this project have been completed. In particular, private sensor objective functions were developed which are aligned with the global objective function, sensor effectiveness has been improved by using “sensor teams,” system efficiency has been improved by 30% using difference evaluation func- tions, we have demonstrated system reconfigurability for 20% changes in system con- ditions, we have demonstrated extreme scalability of our proposed algorithm, we have demonstrated that sensor networks can overcome disruptions of up to 20% in network conditions, and have demonstrated system reconfigurability to 20% changes in system conditions in hardware-based simulations. This final report summarizes how each of these milestones was achieved, and gives insight into future research possibilities past the work which has been completed. The following publications support these milestones [6, 8, 9, 10, 16, 18, 19].

Tumer, Kagan

2013-07-31T23:59:59.000Z

251

Energy Management in Wireless Sensor Networks with Energy-hungry Sensors  

E-Print Network (OSTI)

In recent years, the number of wireless sensor network deployments for real life applications has rapidly increased. Still, the energy problem remains one of the major barrier somehow preventing the complete exploitation of this technology. Sensor nodes are typically powered by batteries with a limited lifetime and, even when additional energy can be harvested from the external environment (e.g., through solar cells or piezo-electric mechanisms), it remains a limited resource to be consumed judiciously. Efficient energy management is thus a key requirement for a credible design of a wireless sensor network. Most energy management strategies proposed in the literature assume that data acquisition consumes significantly less energy than their transmission. Unfortunately, this assumption does not hold in a number of practical applications where the power consumption of the sensing activity may be comparable or even greater than that of the radio. In this context, effective energy management strategies should include policies for an efficient use of energy-hungry sensors, which become one of the main components affecting the network lifetime. In this paper, we survey the main approaches for efficient energy management in sensor networks with energy-hungry sensors.

Cesara Alippi; Mario Di Francesco; Manuel Roveri; Mario Di Francesco

2009-01-01T23:59:59.000Z

252

Wireless Sensor Network Fundamentals  

NLE Websites -- All DOE Office Websites (Extended Search)

Wireless Sensor Network Fundamentals Wireless Sensor Network Fundamentals Speaker(s): Steven Lanzisera Date: February 8, 2010 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Kevin Kircher Wireless sensor networks have been promising to provide easy data collection and control capability to applications ranging from scientific data collection, disaster recover, national security, and more. The user experience, however, has been filled with confusing terminology, complicated systems, and a lack of interoperability between vendors. Users with a background in the technology and fundamentals are better able to understand system capabilities, make decisions, and end up with a network that meets their needs. Although a sufficient coverage of this topic is at least a semester course, the goal of this talk is to give a brief

253

Capacitive proximity sensor  

DOE Patents (OSTI)

A proximity sensor based on a closed field circuit is disclosed. The circuit comprises a ring oscillator using a symmetrical array of plates that creates an oscillating displacement current. The displacement current varies as a function of the proximity of objects to the plate array. Preferably the plates are in the form of a group of three pair of symmetric plates having a common center, arranged in a hexagonal pattern with opposing plates linked as a pair. The sensor produces logic level pulses suitable for interfacing with a computer or process controller. The proximity sensor can be incorporated into a load cell, a differential pressure gauge, or a device for measuring the consistency of a characteristic of a material where a variation in the consistency causes the dielectric constant of the material to change. 14 figs.

Kronberg, J.W.

1994-05-31T23:59:59.000Z

254

Thin film hydrogen sensor  

DOE Green Energy (OSTI)

A hydrogen sensor element comprises an essentially inert, electrically-insulating substrate having a thin-film metallization deposited thereon which forms at least two resistors on the substrate. The metallization comprises a layer of Pd or a Pd alloy for sensing hydrogen and an underlying intermediate metal layer for providing enhanced adhesion of the metallization to the substrate. An essentially inert, electrically insulating, hydrogen impermeable passivation layer covers at least one of the resistors, and at least one of the resistors is left uncovered. The difference in electrical resistances of the covered resistor and the uncovered resistor is related to hydrogen concentration in a gas to which the sensor element is exposed.

Lauf, Robert J. (Oak Ridge, TN); Hoffheins, Barbara S. (Knoxville, TN); Fleming, Pamela H. (Oak Ridge, TN)

1994-01-01T23:59:59.000Z

255

Implantable medical sensor system  

DOE Patents (OSTI)

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.

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

256

Chemical sensor system  

DOE Patents (OSTI)

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.

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

257

Fluorescent temperature sensor  

Science Conference Proceedings (OSTI)

The present invention is a fluorescent temperature sensor or optical thermometer. The sensor includes a solution of 1,3-bis(1-pyrenyl)propane within a 1-butyl-1-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquid solvent. The 1,3-bis(1-pyrenyl)propane remains unassociated when in the ground state while in solution. When subjected to UV light, an excited state is produced that exists in equilibrium with an excimer. The position of the equilibrium between the two excited states is temperature dependent.

Baker, Gary A [Los Alamos, NM; Baker, Sheila N [Los Alamos, NM; McCleskey, T Mark [Los Alamos, NM

2009-03-03T23:59:59.000Z

258

Routing Technique Based on Clustering for Data Duplication Prevention in Wireless Sensor Network  

E-Print Network (OSTI)

Wireless Sensor Networks is important to nodes energy consumption for long activity of sensor nodes because nodes that compose sensor network are small size, and battery capacity is limited. For energy consumption decrease of sensor nodes, sensor networks routing technique is divided by flat routing and hierarchical routing technique. Specially, hierarchical routing technique is energy efficient routing protocol to pare down energy consumption of whole sensor nodes and to scatter energy consumption of sensor nodes by forming cluster and communicating with cluster head. but though hierarchical routing technique based on clustering is advantage more than flat routing technique, this is not used for reason that is not realistic. The reason that is not realistic is because hierarchical routing technique does not consider data transmission radius of sensor node in actually. so this paper propose realistic routing technique base on clustering.

Kim, Boseung; Shin, Yongtae

2009-01-01T23:59:59.000Z

259

Tactile sensing using elastomeric sensors  

E-Print Network (OSTI)

GelSight, namely, elastomeric sensor, is a novel tactile sensor to get the 3D information of contacting surfaces. Using GelSight, some tactile properties, such as softness and roughness, could be gained through image ...

Jia, Xiaodan (Xiaodan Stella)

2012-01-01T23:59:59.000Z

260

Advanced Sensors for Multifunctional Applications  

Science Conference Proceedings (OSTI)

For more precision, most of the examples are related to multifunctional gas ... Still , those systems do not have the information capacity of natural biologic ... shape- memory devices, temperature sensors, and liquid-viscosity sensors as well.

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

An aerial radiological survey of Pocatello and Soda Springs, Idaho and surrounding area, June--July 1986  

SciTech Connect

Three aerial radiological surveys were conducted during the period 16 June through 15 July 1986 over the towns of Pocatello, Soda Springs, and Fort Hall, Idaho and the surrounding areas. The surveys were performed for the United States Environmental Protection Agency (EPA) by the United States Department of Energy's (DOE) Remote Sensing Laboratory (RSL), utilizing the Aerial Measuring System (AMS). This work was completed in cooperation with a study by the EPA to conduct a dose assessment of human radiation exposure for industrial sources in Pocatello and Soda Springs, Idaho. The aerial surveys were performed to document the natural terrestrial radiological environment of the three localities and to map the spatial extent and degree of contamination due to phosphate milling operations. The results of these surveys will be used for planning ground-based measurements in addition to being incorporated into the dose assessment document. 4 refs., 14 figs., 6 tabs.

Berry, H.A.

1987-02-01T23:59:59.000Z

262

Sensors for Underground Distribution Systems  

Science Conference Proceedings (OSTI)

A variety of different sensors are needed for underground distribution applications. These include sensors for temperature monitoring to track possible overload issues and other issues that can cause heating in underground systems (for example, arcing), sensors for fault detection and characterization, and sensors for voltage and current monitoring to support a wide range of applications (for example, SCADA, volt/var control, and load flow management). In 2008, EPRI evaluated the present state of medium-...

2010-03-31T23:59:59.000Z

263

Carbon Nanostructure-Based Sensors  

E-Print Network (OSTI)

as Carriers. Angewandte Chemie International Edition 2009,Vapor Sensors. Angewandte Chemie International Edition 2008,Absorption. Angewandte Chemie International Edition 2009,

Sarkar, Tapan

2012-01-01T23:59:59.000Z

264

Future Directions for Magnetic Sensors  

Science Conference Proceedings (OSTI)

... sensor applications. They have the advantages of high sensitivity, small size, low cost, and low power consumption. However ...

2012-10-05T23:59:59.000Z

265

Carbon Monoxide Sensor - Energy Innovation Portal  

Electricity Transmission; Energy Analysis; ... the sensor ensures reproducibility and reduces the need for calibration of every sensor coming off the ...

266

Shape memory alloy thaw sensors  

DOE Patents (OSTI)

A sensor permanently indicates that it has been exposed to temperatures exceeding a critical temperature for a predetermined time period. An element of the sensor made from shape memory alloy changes shape when exposed, even temporarily, to temperatures above the Austenitic temperature of the shape memory alloy. The shape change of the SMA element causes the sensor to change between two readily distinguishable states.

Shahinpoor, Mohsen (Albuquerque, NM); Martinez, David R. (Albuquerque, NM)

1998-01-01T23:59:59.000Z

267

Sensor system for web inspection  

DOE Patents (OSTI)

A system for electrically measuring variations over a flexible web has a capacitive sensor including spaced electrically conductive, transmit and receive electrodes mounted on a flexible substrate. The sensor is held against a flexible web with sufficient force to deflect the path of the web, which moves relative to the sensor.

Sleefe, Gerard E. (1 Snowcap Ct., Cedar Crest, NM 87008); Rudnick, Thomas J. (626 E. Jackson Rd., St. Louis, MO 63119); Novak, James L. (11048 Malaguena La. NE., Albuquerque, NM 87111)

2002-01-01T23:59:59.000Z

268

Navigation protocols in sensor networks  

Science Conference Proceedings (OSTI)

We develop distributed algorithms for adaptive sensor networks that respond to directing a target through a region of space. We model this problem as an online distributed motion planning problem. Each sensor node senses values in its perception space ... Keywords: Sensor networks, motes, navigation, potential field, robotics

Qun Li; Daniela Rus

2005-08-01T23:59:59.000Z

269

Thick film hydrogen sensor  

DOE Green Energy (OSTI)

A thick film hydrogen sensor element includes an essentially inert, electrically-insulating substrate having deposited thereon a thick film metallization forming at least two resistors. The metallization is a sintered composition of Pd and a sinterable binder such as glass frit. An essentially inert, electrically insulating, hydrogen impermeable passivation layer covers at least one of the resistors.

Hoffheins, Barbara S. (Knoxville, TN); Lauf, Robert J. (Oak Ridge, TN)

1995-01-01T23:59:59.000Z

270

Composite sensor membrane  

DOE Patents (OSTI)

A sensor may include a membrane to deflect in response to a change in surface stress, where a layer on the membrane is to couple one or more probe molecules with the membrane. The membrane may deflect when a target molecule reacts with one or more probe molecules.

Majumdar, Arun (Orinda, CA); Satyanarayana, Srinath (Berkeley, CA); Yue, Min (Albany, CA)

2008-03-18T23:59:59.000Z

271

Carbon dioxide sensor  

SciTech Connect

The present invention generally relates to carbon dioxide (CO.sub.2) sensors. In one embodiment, the present invention relates to a carbon dioxide (CO.sub.2) sensor that incorporates lithium phosphate (Li.sub.3PO.sub.4) as an electrolyte and sensing electrode comprising a combination of lithium carbonate (Li.sub.2CO.sub.3) and barium carbonate (BaCO.sub.3). In another embodiment, the present invention relates to a carbon dioxide (CO.sub.2) sensor has a reduced sensitivity to humidity due to a sensing electrode with a layered structure of lithium carbonate and barium carbonate. In still another embodiment, the present invention relates to a method of producing carbon dioxide (CO.sub.2) sensors having lithium phosphate (Li.sub.3PO.sub.4) as an electrolyte and sensing electrode comprising a combination of lithium carbonate (Li.sub.2CO.sub.3) and barium carbonate (BaCO.sub.3).

Dutta, Prabir K. (Worthington, OH); Lee, Inhee (Columbus, OH); Akbar, Sheikh A. (Hilliard, OH)

2011-11-15T23:59:59.000Z

272

Miniaturized wireless sensor network  

E-Print Network (OSTI)

This paper addresses an overview of the wireless sensor networks. It is shown that MEMS/NEMS technologies and SIP concept are well suited for advanced architectures. It is also shown analog architectures have to be compatible with digital signal techniques to develop smart network of microsystem.

Lecointre, Aubin; Dubuc, David; Katia, Grenier; Patrick, Pons; Aubert, Hervé; Muller, A; Berthou, Pascal; Gayraud, Thierry; Plana, Robert

2010-01-01T23:59:59.000Z

273

Lean blowoff detection sensor  

DOE Patents (OSTI)

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.

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

2007-04-03T23:59:59.000Z

274

Open Standards for Sensor Information Processing  

Science Conference Proceedings (OSTI)

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).

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

2009-07-01T23:59:59.000Z

275

Integrated Mirco-Machined Hydrogen Gas Sensors  

DOE Green Energy (OSTI)

The widespread use of hydrogen as both an industrial process gas and an energy storage medium requires fast, selective detection of hydrogen gas. This report discusses the development of a new type of solid-state hydrogen gas sensor that couples novel metal hydride thin films with a MEMS (Micro-Electro-Mechanical System) structure known as a micro-hotplate. In this project, Micro-hotplate structures were overcoated with engineered multilayers that serve as the active hydrogen-sensing layer. The change in electrical resistance of these layers when exposed to hydrogen gas was the measured sensor output. This project focused on achieving the following objectives: (1) Demonstrating the capabilities of micro-machined H2 sensors; (2) Developing an understanding of their performance; (3) Critically evaluating the utility and viability of this technology for life safety and process monitoring applications. In order to efficiently achieve these objectives, the following four tasks were identified: (1) Sensor Design and Fabrication; (2) Short Term Response Testing; (3) Long Term Behavior Investigation; (4) Systems Development. Key findings in the project include: The demonstration of sub-second response times to hydrogen; measured sensitivity to hydrogen concentrations below 200 ppm; a dramatic improvement in the sensor fabrication process and increased understanding of the processing properties and performance relationships of the devices; the development of improved sensing multilayers; and the discovery of a novel strain based hydrogen detection mechanism. The results of this program suggest that this hydrogen sensor technology has exceptional potential to meet the stringent demands of life safety applications as hydrogen utilization and infrastructure becomes more prevalent.

Frank DiMeoJr. Ing--shin Chen

2005-12-15T23:59:59.000Z

276

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

Science Conference Proceedings (OSTI)

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.

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

277

Alarm sensor apparatus for closures  

DOE Patents (OSTI)

An alarm sensor apparatus for closures such as doors and windows, and particularly for closures having loose tolerances such as overhead doors, garage doors or the like, the sensor apparatus comprising a pair of cooperating bracket members, one being attached to the door facing or framework and the other to the door member, two magnetic sensor elements carried by said bracket members, the bracket members comprising a pair of cooperating orthogonal guide slots and plates and a stop member engageable with one of the sensors for aligning the sensors with respect to each other in all three orthogonal planes when the door is closed.

Carlson, J.A.; Stoddard, L.M.

1984-01-31T23:59:59.000Z

278

Alarm sensor apparatus for closures  

DOE Patents (OSTI)

An alarm sensor apparatus for closures such as doors and windows, and particularly for closures having loose tolerances such as overhead doors, garage doors or the like, the sensor apparatus comprising a pair of cooperating bracket members, one being attached to the door facing or frame work and the other to the door member, two magnetic sensor elements carried by said bracket members, the bracket members comprising a pair of cooperating orthogonal guide slots and plates and a stop member engageable with one of the sensors for aligning the sensors with respect to each other in all three orthogonal planes when the door is closed.

Carlson, James A. (Thornton, CO); Stoddard, Lawrence M. (Arvada, CO)

1986-01-01T23:59:59.000Z

279

Two terminal micropower radar sensor  

DOE Patents (OSTI)

A simple, low power ultra-wideband radar motion sensor/switch configuration connects a power source and load to ground. The switch is connected to and controlled by the signal output of a radar motion sensor. The power input of the motion sensor is connected to the load through a diode which conducts power to the motion sensor when the switch is open. A storage capacitor or rechargeable battery is connected to the power input of the motion sensor. The storage capacitor or battery is charged when the switch is open and powers the motion sensor when the switch is closed. The motion sensor and switch are connected between the same two terminals between the source/load and ground. 3 figs.

McEwan, T.E.

1995-11-07T23:59:59.000Z

280

Two terminal micropower radar sensor  

SciTech Connect

A simple, low power ultra-wideband radar motion sensor/switch configuration connects a power source and load to ground. The switch is connected to and controlled by the signal output of a radar motion sensor. The power input of the motion sensor is connected to the load through a diode which conducts power to the motion sensor when the switch is open. A storage capacitor or rechargeable battery is connected to the power input of the motion sensor. The storage capacitor or battery is charged when the switch is open and powers the motion sensor when the switch is closed. The motion sensor and switch are connected between the same two terminals between the source/load and ground.

McEwan, Thomas E. (Livermore, CA)

1995-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Sensors and Controls Workshop Summary Report  

SciTech Connect

Higher operating efficiencies, emission reductions, improved reliability, and lower operating costs are benefits that the power industry can realize with the utilization of sensors and controls. However, for the power industry to derive the maximum benefit from sensors and controls, improvements in existing technologies and novel approaches to challenging measurements are needed. Recognizing the importance of sensors and controls, the U.S. Department of Energy (DOE) National Energy Technology Laboratory (NETL) sponsored a sensors and controls workshop on April 17 to 18, 2001, in Washington, DC. The workshop focused on identifying technology needs in sensors and controls for existing fossil-energy power plants as well as future facilities conceived under the Vision 21 Program. Forty-six experts from 29 organizations, including private industry, research laboratories, academia, and government agencies, attended the workshop. The meeting opened with keynote speakers from NETL and the private sector. NETL officials spoke of the Vision 21 and advanced research programs. Speakers from the Electric Power Research Institute (EPRI) and Delphi Automotive Systems Research Laboratory discussed the improvements realized with their respective operation through the use of sensors and controls. NETL keynote speakers Robert Romanosky and Carl Bauer emphasized that developing sensor and control systems plays a critical role in DOE Office of Fossil Energy Vision 21 Program, clean coal activities under the Power Plant Improvement Initiative, and the proposed Clean Coal Power Initiative. The Vision 21 Program is aimed at providing technologies for ultra-clean fossil-fuel-based energy production with 60- to 75-percent efficiencies and near zero emissions. The program also uses a modular approach to present opportunities to not only generate power, but also co-produce clean fuels, chemicals, steam, and other useful products. The ultra-high efficiency and environmental performance goals of the Vision 21 Program mean that facilities must operate at optimum conditions, while adapting in real-time to changes in load and feedstock. These are challenging performance goals. They will require advanced control and sensing systems that can be adapted and optimized in real time. To improve the overall plant performance of existing power plants, one of the most cost-effective methods is to update the sensor and control systems.

Susan Maley; Robert R. Romanosky

2001-11-30T23:59:59.000Z

282

SC/49/SM20 AERIAL SURVEYS OF BELUGA WHALES IN COOK INLET, ALASKA,  

E-Print Network (OSTI)

The National Marine Mammal Laboratory (NMML), in cooperation with the NMFS Alaska Regional Office, the Alaska Beluga Whale Committee (ABWC) and the Cook Inlet Marine Mammal Council (CIMMC), conducted an aerial survey of the beluga whale population in Cook Inlet, Alaska, during 8-10 June 1997. This provided a thorough coverage of the coasts around the entire inlet (1,388 km). Therefore, 100 % of the coastal areas where belugas were expected to be during this season were searched one or more times. The 23 hr survey was flown in a twin-engine, high-wing aircraft at 244 m (800 ft) altitude and 185 km/hr (100 kt) along a trackline 1.4 km from shore. Throughout most of this survey, a test of sighting rates was conducted with multiple independent observers on the coastal (left) side of the plane, where virtually all sightings occur. A single observer and a computer operator/data recorder were on the right side. After finding beluga groups, a series of aerial passes were made to allow at least two pairs of observers to make 4 or more counts of whales. The sum of the aerial estimates (using median counts from each site, not corrected for missed whales) ranged from 217 to 264 whales, depending on survey day. Only 1 beluga whale was found in lower Cook Inlet, 51-73 were counted near the Susitna River, 139-161 were seen in Knik Arm and 26-29 were counted in Chickaloon Bay. Combining data from 1994-97, almost half (46%) of the initial sightings occurred>1.4 km from the aircraft- the perimeter of the standard viewing area- with mean sighting distances of 1.2 km for small groups ( = 20). In only 8 of 59 instances were whale groups>1.4 km from the trackline. Of 106 groups recorded by paired, independent observers in 1994-97, 20 were reported by only one primary observer, while 86 (81%) were reported by both observers.

David J. Rugh; Roderick C. Hobbs; Kim E. W. Shelden; Janice M. Waite

1997-01-01T23:59:59.000Z

283

A variety of neutron sensors based on scintillating glass waveguides  

SciTech Connect

Pacific Northwest Laboratory (PNL) has fabricated cerium-activated, lithium-silicate glass scintillating fiber neutron sensors via a hot-downdraw process. These fibers typically have a transmission length (e{sup {minus}1} length) of greater than 2 meters. The underlying physics of, the properties of, and selected devices incorporating these fibers are described. These fibers constitute an enabling technology for a wide variety of neutron sensors.

Bliss, M.; Craig, R.A.

1995-05-01T23:59:59.000Z

284

Hierarchical Nanoceramics for Industrial Process Sensors  

SciTech Connect

This project developed a robust, tunable, hierarchical nanoceramics materials platform for industrial process sensors in harsh-environments. Control of material structure at multiple length scales from nano to macro increased the sensing response of the materials to combustion gases. These materials operated at relatively high temperatures, enabling detection close to the source of combustion. It is anticipated that these materials can form the basis for a new class of sensors enabling widespread use of efficient combustion processes with closed loop feedback control in the energy-intensive industries. The first phase of the project focused on materials selection and process development, leading to hierarchical nanoceramics that were evaluated for sensing performance. The second phase focused on optimizing the materials processes and microstructures, followed by validation of performance of a prototype sensor in a laboratory combustion environment. The objectives of this project were achieved by: (1) synthesizing and optimizing hierarchical nanostructures; (2) synthesizing and optimizing sensing nanomaterials; (3) integrating sensing functionality into hierarchical nanostructures; (4) demonstrating material performance in a sensing element; and (5) validating material performance in a simulated service environment. The project developed hierarchical nanoceramic electrodes for mixed potential zirconia gas sensors with increased surface area and demonstrated tailored electrocatalytic activity operable at high temperatures enabling detection of products of combustion such as NOx close to the source of combustion. Methods were developed for synthesis of hierarchical nanostructures with high, stable surface area, integrated catalytic functionality within the structures for gas sensing, and demonstrated materials performance in harsh lab and combustion gas environments.

Ruud, James, A.; Brosnan, Kristen, H.; Striker, Todd; Ramaswamy, Vidya; Aceto, Steven, C.; Gao, Yan; Willson, Patrick, D.; Manoharan, Mohan; Armstrong, Eric, N., Wachsman, Eric, D.; Kao, Chi-Chang

2011-07-15T23:59:59.000Z

285

IN-LINE CHEMICAL SENSOR DEPLOYMENT IN A TRITIUM PLANT  

SciTech Connect

The Savannah River Tritium Plant (TP) relies on well understood but aging sensor technology for process gas analysis. Though new sensor technologies have been brought to various readiness levels, the TP has been reluctant to install technologies that have not been tested in tritium service. This gap between sensor technology development and incorporating new technologies into practical applications demonstrates fundamental challenges that exist when transitioning from status quo to state-of-the-art in an extreme environment such as a tritium plant. These challenges stem from three root obstacles: 1) The need for a comprehensive assessment of process sensing needs and requirements; 2) The lack of a pick-list of process-compatible sensor technologies; and 3) The need to test technologies in a tritium-contaminated process environment without risking production. At Savannah River, these issues are being addressed in a two phase project. In the first phase, TP sensing requirements were determined by a team of process experts. Meanwhile, Savannah River National Laboratory sensor experts identified candidate technologies and related them to the TP processing requirements. The resulting roadmap links the candidate technologies to actual plant needs. To provide accurate assessments of how a candidate sensor technology would perform in a contaminated process environment, an instrument demonstration station was established within a TP glove box. This station was fabricated to TP process requirements and designed to handle high activity samples. The combination of roadmap and demonstration station provides the following assets: ? Creates a partnership between the process engineers and researchers for sensor selection, maturation, and insertion, ? Selects the right sensors for process conditions ? Provides a means for safely inserting new sensor technology into the process without risking production, and ? Provides a means to evaluate off normal occurrences where and when they occur. This paper discusses the process to identify and demonstrate new sensor technologies for the Savannah River TP.

Tovo, L.; Wright, J.; Torres, R.; Peters, B.

2013-10-02T23:59:59.000Z

286

Helping a bio-inspired tactile sensor system to focus on the essential  

Science Conference Proceedings (OSTI)

Insects use their antennae (feelers) as near-range sensors for orientation, object localization and communication. This paper presents further developments for an approach for an active tactile sensor system. This includes a hardware construction as ... Keywords: FFT, acceleration measurement, active tactile sensing, dimension reduction, material classification, non-negative matrix factorization NMF, object localization

Sven Hellbach; Marc Otto; Volker Dürr

2011-12-01T23:59:59.000Z

287

Fiber optic hydrogen sensor  

DOE Green Energy (OSTI)

This report covers the development of fiber optic hydrogen and temperature sensors for monitoring dissolved hydrogen gas in transformer oil. The concentration of hydrogen gas is a measure of the corona and spark discharge within the transformer and reflects the state of health of the transformer. Key features of the instrument include use of palladium alloys to enhance hydrogen sensitivity, a microprocessor controlled instrument with RS-232, liquid crystal readout, and 4-20 ma. current loop interfaces. Calibration data for both sensors can be down loaded to the instrument through the RS-232 interface. This project was supported by the Technology Transfer Initiative in collaboration with J. W. Harley, Inc. through the mechanism of a cooperative research and development agreement (CRADA).

Butler, M.A.; Sanchez, R.; Dulleck, G.R.

1996-05-01T23:59:59.000Z

288

An Inexpensive CO Sensor  

NLE Websites -- All DOE Office Websites (Extended Search)

6 6 An Inexpensive CO Sensor A schematic of the prototype CO passive sensor. Carbon moNOxide is a colorless, odorless, toxic gas whose primary source indoor is the incomplete combustion of fossil fuels. This gas can be a potential problem in any house that uses combustion appliances for space or water heating, cooking, or idling an automobile in an attached garage. Although most appliances work correctly, a problem can exist in houses when the appliance is unventilated or its ventilation system does not properly eliminate exhaust gases from the house. Since Americans spend 90% of their time indoors and 65 to 70% in their residences, understanding how and when CO builds up indoors could save lives. We have very little systematic data on how CO hazards are distrubuted in the indoor environment, but mortality

289

Rigid particulate matter sensor  

DOE Patents (OSTI)

A sensor to detect particulate matter. The sensor includes a first rigid tube, a second rigid tube, a detection surface electrode, and a bias surface electrode. The second rigid tube is mounted substantially parallel to the first rigid tube. The detection surface electrode is disposed on an outer surface of the first rigid tube. The detection surface electrode is disposed to face the second rigid tube. The bias surface electrode is disposed on an outer surface of the second rigid tube. The bias surface electrode is disposed to face the detection surface electrode on the first rigid tube. An air gap exists between the detection surface electrode and the bias surface electrode to allow particulate matter within an exhaust stream to flow between the detection and bias surface electrodes.

Hall, Matthew (Austin, TX)

2011-02-22T23:59:59.000Z

290

Number of lightning discharges causing damage to lightning arrester cables for aerial transmission lines in power systems  

SciTech Connect

Damage by lightning discharges to lightning arrester cables for 110-175 kV aerial transmission lines is analyzed using data from power systems on incidents with aerial transmission lines over a ten year operating period (1997-2006). It is found that failures of lightning arrester cables occur when a tensile force acts on a cable heated to the melting point by a lightning current. The lightning currents required to heat a cable to this extent are greater for larger cable cross sections. The probability that a lightning discharge will develop decreases as the amplitude of the lightning current increases, which greatly reduces the number of lightning discharges which damage TK-70 cables compared to TK-50 cables. In order to increase the reliability of lightning arrester cables for 110 kV aerial transmission lines, TK-70 cables should be used in place of TK-50 cables. The number of lightning discharges per year which damage lightning arrester cables is lowered when the density of aerial transmission lines is reduced within the territory of electrical power systems. An approximate relationship between these two parameters is obtained.

Nikiforov, E. P. [Electric Power Scientific Research Institute (VNIIE), branch of OAO 'NTTs Elektroenergetika' (Russian Federation)

2009-07-15T23:59:59.000Z

291

The Influence of Atmospheric Stability on Wind Drift from Ultra-Low-volume Aerial Forest Spray Applications  

Science Conference Proceedings (OSTI)

Measurements of drift cloud mass from 11 cases selected from a study of wind-borne droplet drift from ultra low-volume aerial spray applications over northern Ontario forests are presented as a function of atmospheric stability. Six swaths were ...

R. S. Crabbe; M. McCooeye; R. E. Mickle

1994-04-01T23:59:59.000Z

292

Animal Conservation (2004) 7, 435443 C 2004 The Zoological Society of London. Printed in the United Kingdom DOI:10.1017/S1367943004001635 Aerial surveys and the potential biological removal technique  

E-Print Network (OSTI)

in the United Kingdom DOI:10.1017/S1367943004001635 Aerial surveys and the potential biological removal. A time series of aerial survey estimates from 1987­2001 confirms that there is considerable temporal other aerial surveys and satellite tracking that dugongs undertake large-scale movements associated

Marsh, Helene

293

P ifi W l Si hti D t d b COMIDA A i l SPacific Walrus Sightings Documented by COMIDA Aerial Surveys f C S 2009of the Northeastern Chukchi Sea in 2009  

E-Print Network (OSTI)

P ifi W l Si hti D t d b COMIDA A i l SPacific Walrus Sightings Documented by COMIDA Aerial Surveys In the summer and fall of 2009, aerial surveys were conducted in the northeastern Chukchi Sea as part. For more information on COMIDA surveys i t "A i l Figure 2. Aerial survey coverage from June 24 to October

294

NOx Sensor Development  

SciTech Connect

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.

Woo, L Y; Glass, R S

2009-10-27T23:59:59.000Z

295

Underground Distribution Sensors  

Science Conference Proceedings (OSTI)

Rising costs of new infrastructure, increasing demand, and a declining number of available workers will drive utilities to operate as efficiently as possible. The practice of overbuilding infrastructure to improve or maintain reliability will be viewed as cost-inefficient. Utilities will be forced to operate distribution systems more dynamically and efficiently. Distribution sensors will help provide the needed information to utilities to achieve the goal of dynamic efficiency. The Underground Distributi...

2009-03-31T23:59:59.000Z

296

An aerial radiological survey of the southwest drainage basin area of the Savannah River Site  

SciTech Connect

An aerial radiological survey was conducted over a 106-square-mile area of the Savannah River Site (SRS), formerly the Savannah River Plant. The survey was conducted from August 24 through September 8, 1988, to collect baseline radiological data over the area. Both natural and man-made gamma emitting radionuclides were detected in the area. The detected man-made sources were confined to creeks, branches, and SRS facilities in the surveyed area and were a result of SRS operations. Naturally-occurring radiation levels were consistent with those levels detected in adjacent areas during previous surveys. The annual dose levels were within the range of levels found throughout the United States.

Feimster, E.L.

1994-04-01T23:59:59.000Z

297

Use of Micro Unmanned Aerial Vehicles in Transportation Infrastructure Condition Surveys  

E-Print Network (OSTI)

This thesis provides an assessment of the effectiveness of micro unmanned aerial vehicles (MUAVs) as a tool for collecting condition data for transportation infrastructure based on multiple field experiments. The primary experiment entails performing a level of service (LOS) condition assessment on multiple roadside sample units at various locations across the state of Texas. A secondary field experiment entails performing a pavement condition index (PCI) survey on airfield pavements. The condition of these sample units were assessed twice: onsite (i.e., ground truth) and by observing digital images (still and video) collected via a MUAV. The results of these surveys are then analyzed to determine if there are statistically significant differences in the standard deviation and mean values of the condition ratings. This study shows that in favorable site conditions, the MUAV demonstrates promise for improving current roadway inspection methods. However, limitations of the MUAVs field performance show that there is need for improvement in this technology before it can be implemented.

Hart, William Scott

2010-12-01T23:59:59.000Z

298

Hydrogen Optical Fiber Sensors  

DOE Green Energy (OSTI)

Optically-based hydrogen sensors promise to deliver an added level of safety as hydrogen and fuel cell technologies enter the mainstream. More importantly, they offer reduced power consumption and lower cost, which are desirable for mass production applications such as automobiles and consumer appliances. This program addressed two of the major challenges previously identified in porous optrode-based optical hydrogen sensors: sensitivity to moisture (ambient humidity), and interference from the oxygen in air. Polymer coatings to inhibit moisture and oxygen were developed in conjunction with newer and novel hydrogen sensing chemistries. The results showed that it is possible to achieve sensitive hydrogen detection and rapid response with minimal interference from oxygen and humidity. As a result of this work, a new and more exciting avenue of investigation was developed: the elimination of the porous optrode and deposition of the sensor chemistry directly into the polymer film. Initial results have been promising, and open up a wider range of potential applications from extended optical fiber sensing networks, to simple plastic "stickers" for use around the home and office.

Lieberman, Robert A.; Beshay, Manal; Cordero, Steven R.

2008-07-28T23:59:59.000Z

299

Ultra-wideband impedance sensor  

DOE Patents (OSTI)

The ultra-wideband impedance sensor (UWBZ sensor, or Z-sensor) is implemented in differential and single-ended configurations. The differential UWBZ sensor employs a sub-nanosecond impulse to determine the balance of an impedance bridge. The bridge is configured as a differential sample-and-hold circuit that has a reference impedance side and an unknown impedance side. The unknown impedance side includes a short transmission line whose impedance is a function of the near proximity of objects. The single-ended UWBZ sensor eliminates the reference side of the bridge and is formed of a sample and hold circuit having a transmission line whose impedance is a function of the near proximity of objects. The sensing range of the transmission line is bounded by the two-way travel time of the impulse, thereby eliminating spurious Doppler modes from large distant objects that would occur in a microwave CW impedance bridge. Thus, the UWBZ sensor is a range-gated proximity sensor. The Z-sensor senses the near proximity of various materials such as metal, plastic, wood, petroleum products, and living tissue. It is much like a capacitance sensor, yet it is impervious to moisture. One broad application area is the general replacement of magnetic sensors, particularly where nonferrous materials need to be sensed. Another broad application area is sensing full/empty levels in tanks, vats and silos, e.g., a full/empty switch in water or petroleum tanks.

McEwan, Thomas E. (Livermore, CA)

1999-01-01T23:59:59.000Z

300

Ultra-wideband impedance sensor  

DOE Patents (OSTI)

The ultra-wideband impedance sensor (UWBZ sensor, or Z-sensor) is implemented in differential and single-ended configurations. The differential UWBZ sensor employs a sub-nanosecond impulse to determine the balance of an impedance bridge. The bridge is configured as a differential sample-and-hold circuit that has a reference impedance side and an unknown impedance side. The unknown impedance side includes a short transmission line whose impedance is a function of the near proximity of objects. The single-ended UWBZ sensor eliminates the reference side of the bridge and is formed of a sample and hold circuit having a transmission line whose impedance is a function of the near proximity of objects. The sensing range of the transmission line is bounded by the two-way travel time of the impulse, thereby eliminating spurious Doppler modes from large distant objects that would occur in a microwave CW impedance bridge. Thus, the UWBZ sensor is a range-gated proximity sensor. The Z-sensor senses the near proximity of various materials such as metal, plastic, wood, petroleum products, and living tissue. It is much like a capacitance sensor, yet it is impervious to moisture. One broad application area is the general replacement of magnetic sensors, particularly where nonferrous materials need to be sensed. Another broad application area is sensing full/empty levels in tanks, vats and silos, e.g., a full/empty switch in water or petroleum tanks. 2 figs.

McEwan, T.E.

1999-03-16T23:59:59.000Z

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

An Aerial Radiological Survey of the City of North Las Vegas (Downtown) and the Motor Speedway  

SciTech Connect

As part of the proficiency training for the Radiological Mapping mission of the Aerial Measuring System (AMS), a survey team from the Remote Sensing Laboratory-Nellis (RSL-Nellis) conducted an aerial radiological survey on December 11-12, 2007, with the purpose of mapping natural radiation background and locating any man-made radioactive sources. The survey covered 19.4 square miles (9.2 square miles over the downtown area of the City of North Las Vegas and 10.2 square miles over the Las Vegas Motor Speedway [LVMS]). The flight lines over the surveyed areas are presented in Figures 1 and 2. A total of four 2.5-hour-long flights were performed at an altitude of 150 ft above ground level (AGL) with 300 ft of flight line spacing. Water line and test line flights were conducted over the Lake Mead and Government Wash areas to ensure quality control of the data. The data were collected by the AMS data acquisition system-REDAR V using an array of twelve 2-inch x 4-inch x 16-inch sodium iodide (NaI) detectors flown on-board a twin-engine Bell 412 helicopter. Data in the form of gamma energy spectra were collected continually (every second) over the course of the survey and were geo-referenced using a differential Global Positioning System. Collection of spectral data allows the system to distinguish between ordinary fluctuations in natural background radiation levels and the signature produced by man-made radioisotopes sources. Spectral data can also be used to identify specific radioactive isotopes. As a courtesy service with the approval of the U.S. Department of Energy, National Nuclear Security Administration, Nevada Site Office, RSL-Nellis is providing this summary to the office of the Mayor of City of North Las Vegas and LVMS security along with the gross counts-based exposure rate and man-made counts maps.

Piotr Wasiolek

2007-12-01T23:59:59.000Z

302

Long-Term, Autonomous Measurement of Atmospheric Carbon Dioxide Using an Ormosil Nanocomposite-Based Optical Sensor  

Science Conference Proceedings (OSTI)

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.

Kisholoy Goswami

2005-10-11T23:59:59.000Z

303

Studying Altocumulus Plus Virga with Ground-based Active and Passive Remote Sensors Zhien Wang1, Kenneth Sassen2, David Whiteman3, and Belay Demoz3 1University of Maryland, Baltimore County, Catonsville, MD 21228 2University of Alaska, Fairbanks, Alaska 99775 3NASA Goddard Space Flight Center, Greenbelt, MD 20771 E-mail: zhien@agnes.gsfc.nasa.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Seasonal and Interannual Variations of Boundary-layer Mixed-phase Seasonal and Interannual Variations of Boundary-layer Mixed-phase Cloud Properties Observed at the ARCF NSA site Zhien Wang, Ming Zhao, and Min Deng University of Wyoming , Laramie, Wyoming, 82071, zwang@uwyo.edu References Curry, J. et al., 1996: Overview of Arctic cloud and radiation characteristics. J. Climate., 9, 1731-1764. Wang, Z. and K. Sassen, 2002: Cirrus cloud microphysical property retrieval using lidar and radar measurements, I: algorithm description and comparison with in situ data. J. Appl. Meteor., 41, 218-229. Wang, Z., K. Sassen, D. Whiteman, and B. Demoz, 2004: Studying altocumulus plus virga with ground-based active and passive remote sensors. J. Appl. Meteor.,43, 449-460. Wang, Z., 2007: Refined Two-channel Microwave Radiometer Liquid Water Path Retrieval at Cold Regions by Using Multiple-sensor Measurements. IEEE Geoscience and Remote

304

Shape memory alloy thaw sensors  

SciTech Connect

A sensor permanently indicates that it has been exposed to temperatures exceeding a critical temperature for a predetermined time period. An element of the sensor made from shape memory alloy changes shape when exposed, even temporarily, to temperatures above the austenitic temperature of the shape memory alloy. The shape change of the SMA element causes the sensor to change between two readily distinguishable states. 16 figs.

Shahinpoor, M.; Martinez, D.R.

1998-04-07T23:59:59.000Z

305

Stochastic binary sensor networks for noisy environments  

Science Conference Proceedings (OSTI)

This paper proposes a stochastic framework for detecting anomalies or gathering events of interest in a noisy environment using a network consisting of binary sensors. A binary sensor is an extremely coarse sensor, capable of measuring data to only 1-bit ... Keywords: energy consumption, energy efficiency, noisy environments, sensor networks, simulation, stochastic binary sensors, wireless networks

T. Nguyen; Dong Nguyen; Huaping Liu; Duc A. Tran

2007-07-01T23:59:59.000Z

306

Portable Chemical Sensors for Environmental  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemical Sensors for Environmental and State of Health Monitoring Emerging nano technologies are transforming microsensor research and development, a key enabler of Sandia's...

307

Available Technologies: Plasmonic Nanocube Sensor  

Berkeley Lab researchers Hung-Jen Wu and John T. Groves have developed a plasmonic nanocube sensor – a low cost, label free optical detection tool ...

308

PC Board Mountable Corrosion Sensors  

Sandia National Laboratories has created sensors to identify and assess the pervasive and expensive problem of corrosion in applications ranging from ...

309

Sensors & Materials | Argonne National Laboratory  

NLE Websites -- All DOE Office Websites (Extended Search)

and engineering expertise to develop, test, and deploy sensors and materials to detect nuclear and radiological materials, chemical and biological agents and explosives. Argonne...

310

Mobility in Wireless Sensor Networks  

E-Print Network (OSTI)

the 802.15.4 radio (for wireless operation) as well as thewireless sensor network protocol, significant power can be saved during network operations.

Mehta, Ankur Mukesh

2012-01-01T23:59:59.000Z

311

Expendable oceanographic sensor apparatus  

DOE Patents (OSTI)

An expendable oceanographic sensor apparatus is deployed from an airplane or a ship to make oceanographic observations in a profile of the surface-to-ocean floor, while deployed on the floor, and then a second profile when returning to the ocean surface. The device then records surface conditions until on-board batteries fail. All data collected is stored and then transmitted from the surface to either a satellite or other receiving station. The apparatus is provided with an anchor that causes descent to the ocean floor and then permits ascent when the anchor is released. Anchor release is predetermined by the occurrence of a pre-programmed event.

McCoy, Kim O. (Carmel, CA); Downing, Jr., John P. (Port Townsand, WA); DeRoos, Bradley G. (Worthington, OH); Riches, Michael R. (Silver Spring, MD)

1993-01-01T23:59:59.000Z

312

Optical humidity sensor  

DOE Patents (OSTI)

An optical dielectric humidity sensor is disclosed which includes a dielectric mirror having multiple alternating layers of two porous water-adsorbent dielectric materials with differing indices of refraction carried by a translucent substrate. A narrow-band polarized light source is positioned to direct light energy onto the mirror, and detectors are positioned to receive light energy transmitted through and reflected by the mirror. A ratiometer indicates humidity in the atmosphere which surrounds the dielectric mirror as a function of a ratio of light energies incident on the detectors. 2 figs.

Tarvin, J.A.

1987-02-10T23:59:59.000Z

313

Optical humidity sensor  

SciTech Connect

An optical dielectric humidity sensor which includes a dielectric mirror having multiple alternating layers of two porous water-adsorbent dielectric materials with differing indices of refraction carried by a translucent substrate. A narrow-band polarized light source is positioned to direct light energy onto the mirror, and detectors are positioned to receive light energy transmitted through and reflected by the mirror. A ratiometer indicates humidity in the atmosphere which surrounds the dielectric mirror as a function of a ratio of light energies incident on the detectors.

Tarvin, Jeffrey A. (Ann Arbor, MI)

1987-01-01T23:59:59.000Z

314

Thin film hydrogen sensor  

DOE Patents (OSTI)

A thin film hydrogen sensor, includes: a substantially flat ceramic substrate with first and second planar sides and a first substrate end opposite a second substrate end; a thin film temperature responsive resistor on the first planar side of the substrate proximate to the first substrate end; a thin film hydrogen responsive metal resistor on the first planar side of the substrate proximate to the fist substrate end and proximate to the temperature responsive resistor; and a heater on the second planar side of the substrate proximate to the first end.

Cheng, Yang-Tse (Rochester Hills, MI); Poli, Andrea A. (Livonia, MI); Meltser, Mark Alexander (Pittsford, NY)

1999-01-01T23:59:59.000Z

315

Fluorescent sensor for mercury  

DOE Patents (OSTI)

The present invention provides a sensor for detecting mercury, comprising: a first polynucleotide, comprising a first region, and a second region, a second polynucleotide, a third polynucleotide, a fluorophore, and a quencher, wherein the third polynucleotide is optionally linked to the second region; the fluorophore is linked to the first polynucleotide and the quencher is linked to the second polynucleotide, or the fluorophore is linked to the second polynucleotide and the quencher is linked to the first polynucleotide; the first region and the second region hybridize to the second polynucleotide; and the second region binds to the third polynucleotide in the presence of Hg.sup.2+ ions.

Wang, Zidong (Urbana, IL); Lee, Jung Heon (Evanston, IL); Lu, Yi (Champaign, IL)

2011-11-22T23:59:59.000Z

316

Heterogeneous wireless sensor network deployment and topology control based on irregular sensor model  

Science Conference Proceedings (OSTI)

Heterogeneous wireless sensor network (heterogeneous WSN) consists of sensor nodes with different ability, such as different computing power and sensing range. Compared with homogeneous WSN, deployment and topology control are more complex in heterogeneous ... Keywords: heterogeneous sensor deployment, irregular sensor model, sensor coverage, topology control, wireless sensor network

Chun-Hsien Wu; Yeh-Ching Chung

2007-05-01T23:59:59.000Z

317

Disens: scalable distributed sensor network simulation  

Science Conference Proceedings (OSTI)

Simulation is widely used for developing, evaluating and analyzing sensor network applications, especially when deploying a large scale sensor network remains expensive and labor intensive. However, due to its computation intensive nature, existent simulation ... Keywords: distributed simulation, sensor network, simulation

Ye Wen; Rich Wolski; Gregory Moore

2007-03-01T23:59:59.000Z

318

Use of sensors in monitoring civil structures  

E-Print Network (OSTI)

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 ...

Daher, Bassam William, 1979-

2004-01-01T23:59:59.000Z

319

Fiber optic temperature sensor  

SciTech Connect

Our fiber optic temperature measurement sensor and system is a major improvement over methods currently in use in most industrial processes, and it delivers all of the attributes required simplicity, accuracy, and cost efficiency-to help improve all of these processes. Because temperature is a basic physical attribute of nearly every industrial and commercial process, our system can eventually result in significant improvements in nearly every industrial and commercial process. Many finished goods, and the materials that go into them, are critically dependent on the temperature. The better the temperature measurement, the better quality the goods will be and the more economically they can be produced. The production and transmission of energy requires the monitoring of temperature in motors, circuit breakers, power generating plants, and transmission line equipment. The more reliable and robust the methods for measuring these temperature, the more available, stable, and affordable the supply of energy will become. The world is increasingly realizing the threats to health and safety of toxic or otherwise undesirable by products of the industrial economy in the environment. Cleanup of such contamination often depends on techniques that require the constant monitoring of temperature in extremely hazardous environments, which can damage most conventional temperature sensors and which are dangerous for operating personnel. Our system makes such monitoring safer and more economical.

Rabold, D.

1995-12-01T23:59:59.000Z

320

Passive blast pressure sensor  

DOE Patents (OSTI)

A passive blast pressure sensor for detecting blast overpressures of at least a predetermined minimum threshold pressure. The blast pressure sensor includes a piston-cylinder arrangement with one end of the piston having a detection surface exposed to a blast event monitored medium through one end of the cylinder and the other end of the piston having a striker surface positioned to impact a contact stress sensitive film that is positioned against a strike surface of a rigid body, such as a backing plate. The contact stress sensitive film is of a type which changes color in response to at least a predetermined minimum contact stress which is defined as a product of the predetermined minimum threshold pressure and an amplification factor of the piston. In this manner, a color change in the film arising from impact of the piston accelerated by a blast event provides visual indication that a blast overpressure encountered from the blast event was not less than the predetermined minimum threshold pressure.

King, Michael J.; Sanchez, Roberto J.; Moss, William C.

2013-03-19T23:59:59.000Z

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Substation Sensor Database Version 1.0  

Science Conference Proceedings (OSTI)

The Substation Sensor database provides utilities with a searchable list of sensors available to be applied in substation applications. The Substation Sensor Database provides a searchable database of sensors available to substation engineers, categorized by Area, Component, Sub-Component, Parameter, and Technology. By specifying each category, the list can be filtered to a sub-set of sensors. By clicking on a sensorname, details can be viewed including a description, sensor maturity, and a link to the m...

2010-11-10T23:59:59.000Z

322

An Aerial Radiological Survey of Selected Areas of Area 18 - Nevada Test Site  

Science Conference Proceedings (OSTI)

As part of the proficiency training for the Radiological Mapping mission of the Aerial Measuring System (AMS), a survey team from the Remote Sensing Laboratory-Nellis (RSL-Nellis) conducted an aerial radiological survey of selected areas of Area 18 of the Nevada Test Site (NTS) for the purpose of mapping man-made radiation deposited as a result of the Johnnie Boy and Little Feller I tests. The survey area centered over the Johnnie Boy ground zero but also included the ground zero and deposition area of the Little Feller I test, approximately 7,000 feet (2133 meters) southeast of the Johnnie Boy site. The survey was conducted in one flight. The completed survey covered a total of 4.0 square miles. The flight lines (with the turns) over the surveyed areas are presented in Figure 1. One 2.5-hour-long flight was performed at an altitude of 100 ft above ground level (AGL) with 200 foot flight-line spacing. A test-line flight was conducted near the Desert Rock Airstrip to ensure quality control of the data. The test line is not shown in Figure 1. However, Figure 1 does include the flight lines for a ''perimeter'' flight. The path traced by the helicopter flying over distinct roads within the survey area can be used to overlay the survey data on a base map or image. The flight survey lines were flown in an east-west orientation perpendicular to the deposition patterns for both sites. This technique provides better spatial resolution when contouring the data. The data were collected by the AMS data acquisition system (REDAR V) using an array of twelve 2-inch x 4-inch x 16-inch sodium iodide (NaI) detectors flown on-board a twin-engine Bell 412 helicopter. Data, in the form of gamma energy spectra, were collected every second over the course of the survey and were geo-referenced using a differential Global Positioning System. Spectral data allows the system to distinguish between ordinary fluctuations in natural background radiation levels and the signature produced by man-made radioisotopes. Spectral data can also identify specific radioactive isotopes. Based on the results of the RSL NTS 1994 surveys, this area was chosen for a resurvey to improve the spatial resolution of the reported depositions for the Johnnie Boy and Little Feller I events. In addition, the survey was expected to confirm the absence of detectable concentrations of Americium-241 (Am-241) at the Johnnie Boy site and attempt to confirm the presence of Uranium-235 (U-235).

Craig Lyons

2009-07-31T23:59:59.000Z

323

An Aerial Radiological Survey of Selected Areas of the City of North Las Vegas  

SciTech Connect

As part of the proficiency training for the Radiological Mapping mission of the Aerial Measuring System (AMS), a survey team from the Remote Sensing Laboratory-Nellis (RSL-Nellis) conducted an aerial radiological survey of selected areas of the city of North Las Vegas for the purpose of mapping natural radiation background and locating any man-made radioactive sources. Survey areas were selected in collaboration with the City Manager's office and included four separate areas: (1) Las Vegas Motor Speedway (10.6 square miles); (2) North Las Vegas Downtown Area (9.2 square miles); (3) I-15 Industrial Corridor (7.4 square miles); and (4) Future site of University of Nevada Las Vegas campus (17.4 square miles). The survey was conducted in three phases: Phase 1 on December 11-12, 2007 (Areas 1 and 2), Phase 2 on February 28, 2008 (Area 3), and Phase 3 on March 19, 2008 (Area 4). The total completed survey covered a total of 44.6 square miles. The flight lines (without the turns) over the surveyed areas are presented in Figures 1, 2, 3, and 4. A total of eight 2.5-hour-long flights were performed at an altitude of 150 ft above ground level (AGL) with 300 feet of flight-line spacing. Water line and test line flights were conducted over the Lake Mead and Government Wash areas to ensure quality control of the data. The data were collected by the AMS data acquisition system (REDAR V) using an array of twelve 2-inch x 4-inch x 16-inch sodium iodide (NaI) detectors flown on-board a twin-engine Bell 412 helicopter. Data, in the form of gamma energy spectra, were collected continually (every second) over the course of the survey and were geo-referenced using a differential Global Positioning System. Collection of spectral data allows the system to distinguish between ordinary fluctuations in natural background radiation levels and the signature produced by man-made radioisotopes. Spectral data can also be used to identify specific radioactive isotopes. As a courtesy service, with the approval of the U.S. Department of Energy, National Nuclear Security Administration, Nevada Site Office, RSL-Nellis is providing this summary to the office of the Mayor of the City of North Las Vegas along with the gross-count-based exposure rate and man-made count contour maps and GIS shape files in electronic format on a compact disk.

Piotr Wasiolek

2008-06-01T23:59:59.000Z

324

Security for wireless sensor networks  

Science Conference Proceedings (OSTI)

This chapter identifies the vulnerabilities associated with the operational paradigms currently employed by Wireless Sensor Networks. A survey of current WSN security research is presented. The security issues of Mobile Ad-Hoc Networks and infrastructure ... Keywords: WSN, security, sensor networks, wireless

Sasikanth Avancha; Jeffrey Undercoffer; Anupam Joshi; John Pinkston

2004-01-01T23:59:59.000Z

325

A series of low-altitude aerial radiological surveys of selected regions within Areas 3, 5, 8, 9, 11, 18, and 25 at the Nevada Test Site  

SciTech Connect

A series of low-altitude, aerial radiological surveys of selected regions within Areas 3, 5, 8, 9, 11, 18,and 25 of the Nevada Test Site was conducted from December 1996 through June 1999. The surveys were conducted for the US Department of Energy by the Remote Sensing Laboratory, located in Las Vegas, Nevada, and maintained and operated by Bechtel Nevada. The flights were conducted at a nominal altitude of 15 meters above ground level along a set of parallel flight lines spaced 23 meters apart. The purpose of these low-altitude surveys was to measure, map, and define the areas of americium-241 activity. The americium contamination will be used to determine the areas of plutonium contamination. Americium-241 activity was detected within 8 of the 11 regions. The three regions where americium-241 was not detected were in the inactive Nuclear Rocket Development Station complex in Area 25, which encompassed the Test Cell A and Test Cell C reactor test stands and the Reactor Maintenance Assembly and Disassembly facility.

Colton, D.P.

1999-12-01T23:59:59.000Z

326

Energy efficient sensor network implementations  

Science Conference Proceedings (OSTI)

In this paper, we discuss a low power embedded sensor node architecture we are developing for distributed sensor network systems deployed in a natural environment. In particular, we examine the sensor node for energy efficient processing-at-the-sensor. We analyze the following modes of operation; event detection, sleep(wake-up), data acquisition, data processing modes using low power, high performance embedded technology such as specialized embedded DSP processors and a low power FPGAs at the sensing node. We use compute intensive sensor node applications: an acoustic vehicle classifier (frequency domain analysis) and a video license plate identification application (learning algorithm) as a case study. We report performance and total energy usage for our system implementations and discuss the system architecture design trade offs.

Frigo, Janette R [Los Alamos National Laboratory; Raby, Eric Y [Los Alamos National Laboratory; Brennan, Sean M [Los Alamos National Laboratory; Kulathumani, Vinod [WEST VIRGINIA UNIV.; Rosten, Ed [CAMBRIDGE UNIV.; Wolinski, Christophe [IRISA; Wagner, Charles [IRISA; Charot, Francois [IRISA

2009-01-01T23:59:59.000Z

327

Novel Zigzag Shape Gives Sensors Magnetic Appeal  

Science Conference Proceedings (OSTI)

... Institute of Standards and Technology (NIST) have designed tiny magnetic sensors in a "zigzag" shape that are ... Zigzag-shaped magnetic sensors. ...

2013-01-22T23:59:59.000Z

328

Wireless Temperature Sensors for Improved HVAC Control  

NLE Websites -- All DOE Office Websites (Extended Search)

reliable, and affordable and affordable Wireless Temperature Sensors for Improved HVAC Control An assessment of wireless sensor technology Executive Summary This Technology...

329

HVAC Sensors, Controls, and Human Feedback Interfaces  

NLE Websites -- All DOE Office Websites (Extended Search)

HVAC Sensors, HVAC Sensors, Controls, and Human Controls, and Human Feedback Interfaces Feedback Interfaces April 26, 2010 Dr. Amr Gado Emerson Climate Technologies Heating And...

330

Gas sensor incorporating a porous framework  

DOE Patents (OSTI)

The disclosure provides sensor for gas sensing including CO.sub.2 gas sensors comprising a porous framework sensing area for binding an analyte gas.

Yaghi, Omar M.; Czaja, Alexander U.; Wang, Bo; Furukawa, Hiroyasu; Galatsis, Kosmas; Wang, Kang L.

2013-07-09T23:59:59.000Z

331

Category:Passive Sensors | Open Energy Information  

Open Energy Info (EERE)

Imaging P Passive Sensors S Stereo Satellite Imagery SWIR Retrieved from "http:en.openei.orgwindex.php?titleCategory:PassiveSensors&oldid594073" Category: Remote Sensing...

332

Energy Harvesting Support for Sensor Networking  

E-Print Network (OSTI)

Networked Sensing Energy Harvesting Support for SensorLifetime or Per formance Energy Harvesting System life andProposed Solution: Energy Harvesting Support for sensor

Jason Hsu; Aman Kansal; Mani Srivastava

2004-01-01T23:59:59.000Z

333

Smart Grid Applications Using Sensor Web Services .  

E-Print Network (OSTI)

??Sensor network web services have recently emerged as promising tools to provide remote management, data collection and querying capabilities for sensor networks. They can be… (more)

Asad, Omar

2011-01-01T23:59:59.000Z

334

An aerial radiological survey of the Durango, Colorado uranium mill tailings site and surrounding area. Date of survey: August 1980  

Science Conference Proceedings (OSTI)

An aerial radiological survey of Durango, Colorado, including the inactive uranium mill tailings piles located southwest of the town, was conducted during August 25--29, 1980, for the Department of Energy`s Environmental and Safety Engineering Division. Areas of radiation exposure rates higher than the local background, which was about 15 microrentgens per hour ({mu}R/h), were observed directly over and to the south of the mill tailings piles, over a cemetery, and at two spots near the fairgrounds. The rapidly changing radiation exposure rates at the boundaries of the piles preclude accurate extrapolation of aerial radiological data to ground level exposure rates in their immediate vicinity. Estimated radiation exposure rates close to the piles, however, approached 30 times background, or about 450 {mu}R/h. Radiation exposure rates in a long area extending south from the tailings piles were about 25 {mu}R/h.

Hilton, L.K.

1981-06-01T23:59:59.000Z

335

An aerial radiological survey of the West Valley Demonstration Project and surrounding area, West Valley, New York  

SciTech Connect

An aerial radiological survey of the West Valley Demonstration Project and the surrounding area was conducted from mid-August through early September 1984 by EG G Energy Measurements, Inc. for the United States Department of Energy. The radiological survey was part of the United States Department of Energy Comprehensive Integrated Remote Sensing (CIRS) program, which provides state-of-the-art remote sensing to support the needs of the various DOE facilities. The survey consisted of airborne measurements of both natural and man-made gamma radiation emanating from the terrestrial surface. These measurements allowed an estimate of the distribution of isotopic concentrations in the area surrounding the project site. Results are reported as isopleths superimposed on aerial photographs of the area. Gamma ray energy spectra are also presented for the net man-made radionuclides. 8 refs., 16 figs., 9 tabs.

Berry, H.A.

1991-09-01T23:59:59.000Z

336

Design of a four rotor unmanned aerial vehicle capable of sustaining zero-roll and zero-pitch flight using vector thrusting  

E-Print Network (OSTI)

In recent decades, remote controlled airplanes and helicopters equipped with video cameras have been used by the movie industry, photographers, and for surveillance. The military deploys these unmanned aerial vehicles ...

Hilton, Danny Charles

2005-01-01T23:59:59.000Z

337

Information fusion of aerial images and LIDAR data in urban areas: vector-stacking, re-classification and post-processing approaches  

Science Conference Proceedings (OSTI)

This research investigates information fusion approaches of high-resolution aerial images and elevation data from Light Detection and Ranging (LIDAR) for urban-environment mapping. Three feature fusion methods are proposed and compared: (1) the vector-stacking ...

Xin Huang; Liangpei Zhang; Wei Gong

2011-01-01T23:59:59.000Z

338

Intelligent Software Agents: Sensor Integration and Response  

Science Conference Proceedings (OSTI)

Abstract In a post Macondo world the buzzwords are Integrity Management and Incident Response Management. The twin processes are not new but the opportunity to link the two is novel. Intelligent software agents can be used with sensor networks in distributed and centralized computing systems to enhance real-time monitoring of system integrity as well as manage the follow-on incident response to changing, and potentially hazardous, environmental conditions. The software components are embedded at the sensor network nodes in surveillance systems used for monitoring unusual events. When an event occurs, the software agents establish a new concept of operation at the sensing node, post the event status to a blackboard for software agents at other nodes to see , and then react quickly and efficiently to monitor the scale of the event. The technology addresses a current challenge in sensor networks that prevents a rapid and efficient response when a sensor measurement indicates that an event has occurred. By using intelligent software agents - which can be stationary or mobile, interact socially, and adapt to changing situations - the technology offers features that are particularly important when systems need to adapt to active circumstances. For example, when a release is detected, the local software agent collaborates with other agents at the node to exercise the appropriate operation, such as: targeted detection, increased detection frequency, decreased detection frequency for other non-alarming sensors, and determination of environmental conditions so that adjacent nodes can be informed that an event is occurring and when it will arrive. The software agents at the nodes can also post the data in a targeted manner, so that agents at other nodes and the command center can exercise appropriate operations to recalibrate the overall sensor network and associated intelligence systems. The paper describes the concepts and provides examples of real-world implementations including the Threat Detection and Analysis System (TDAS) at the International Port of Memphis and the Biological Warning and Incident Characterization System (BWIC) Environmental Monitoring (EM) Component. Technologies developed for these 24/7 operational systems have applications for improved real-time system integrity awareness as well as provide incident response (as needed) for production and field applications.

Kulesz, James J [ORNL; Lee, Ronald W [ORNL

2013-01-01T23:59:59.000Z

339

Modelling of a captive unmanned aerial system teledetecting oil pollution on sea surface  

E-Print Network (OSTI)

Recent major oil-spills were tracked using observations with sufficient altitudes over the sea surface, to detect oil slick locations. For oil-spill responders, we propose a captive Unmanned Aerial System, UAS acting like a periscope over a ship or supply vessel. The system is composed of an umbilical deployed from ship deck, and there are few studies that have examined elasticity within cable dynamic during take-off or landing (TOL) and normal flight phases. Therefore, the safest approach for the control-commands of the system is through umbilical dynamic modelling. We give a time-dependant finite-element formulation, using improved elastic non-linear cable elements. Two kinds of boundary condition, natural or essential, are discussed for roll-in or roll-out of the umbilical. A numerical convergence and a validation with an exact solution are provided, using two examples for the flight parameters. Finally, sensitivity of the model potentially extends its capacity for the system equilibrium prediction, under ...

Muttin, Frédéric

2013-01-01T23:59:59.000Z

340

Aerial radiological surveys of Steed Pond, Savannah River Site: Dates of surveys, 1984--1989  

Science Conference Proceedings (OSTI)

From June 1984 to August 1985, three aerial radiological surveys were conducted over Steed Pond at the Savannah River Site in South Carolina. In addition, Steed Pond was included in larger-area surveys of the Savannah River Site in subsequent years. The surveys were conducted by the Remote Sensing Laboratory of EG&G Energy Measurements, Inc., Las Vegas, Nevada, for the US Department of Energy. Airborne measurements were obtained for both natural and man-made gamma radiation over Steed Pond and surrounding areas. The first survey was conducted when the pond was filled to normal capacity for the time of the year. On September 1, 1984, the Steed Pond dam spillway failed causing the pond to drain. The four subsequent surveys were conducted with the pond drained. The second survey and the third were conducted to study silt deposits exposed by the drop in water level after the spillway`s opening. Steed Pond data from the February 1987 and April 1989 Savannah River Site surveys have been included to bring this study up to date.

Fritzsche, A.E.; Jobst, J.E.

1993-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Aerial Neutron Detection of Cosmic-Ray Interactions with the Earth's Surface  

SciTech Connect

We have demonstrated the ability to measure the neutron flux produced by the cosmic-ray interaction with nuclei in the ground surface using aerial neutron detection. High energy cosmic-rays (primarily muons with GeV energies) interact with the nuclei in the ground surface and produce energetic neutrons via spallation. At the air-surface interface, the neutrons produced by spallation will either scatter within the surface material, become thermalized and reabsorbed, or be emitted into the air. The mean free path of energetic neutrons in air can be hundreds of feet as opposed to a few feet in dense materials. As such, the flux of neutrons escaping into the air provides a measure of the surface nuclei composition. It has been demonstrated that this effect can be measured at long range using neutron detectors on low flying helicopters. Radiological survey measurements conducted at Government Wash in Las Vegas, Nevada, have shown that the neutron background from the cosmic-soil interactions is repeatable and directly correlated to the geological data. Government Wash has a very unique geology, spanning a wide variety of nuclide mixtures and formations. The results of the preliminary measurements are presented.

Richard Maurer

2008-09-18T23:59:59.000Z

342

Aerial Neutron Detection of Cosmic-Ray Interactions with the Earth's Surface  

SciTech Connect

We have demonstrated the ability to measure the neutron flux produced by the cosmic-ray interaction with nuclei in the ground surface using aerial neutron detection. High energy cosmic-rays (primarily muons with GeV energies) interact with the nuclei in the ground surface and produce energetic neutrons via spallation. At the air-surface interface, the neutrons produced by spallation will either scatter within the surface material, become thermalized and reabsorbed, or be emitted into the air. The mean free path of energetic neutrons in air can be hundreds of feet as opposed to a few feet in dense materials. As such, the flux of neutrons escaping into the air provides a measure of the surface nuclei composition. It has been demonstrated that this effect can be measured at long range using neutron detectors on low flying helicopters. Radiological survey measurements conducted at Government Wash in Las Vegas, Nevada, have shown that the neutron background from the cosmic-soil interactions is repeatable and directly correlated to the geological data. Government Wash has a very unique geology, spanning a wide variety of nuclide mixtures and formations. The results of the preliminary measurements are presented.

Richard Maurer

2008-09-18T23:59:59.000Z

343

activities  

NLE Websites -- All DOE Office Websites (Extended Search)

Detecting Things We Cannot See: Learning the Concepts of Control and Detecting Things We Cannot See: Learning the Concepts of Control and Variable in an Experiment Submitted by Anita Brook-Dupree, 1996 TRAC teacher at Fermilab, Teacher, Alternative Middle Years School, Philadelphia, PA. Particle physicists at Fermilab in Batavia, Illinois are faced with the problem of detecting the presence of sub-atomic particles they cannot see. During my summer as a TRAC teacher at Fermilab, I tried to think of ways to teach middle school students about things we cannot see. I want to thank my nine-year-old daughter Gia for the idea for the following activity. I was lamenting that I could not come up with ideas of how to relate the work of Fermilab scientists to anything that my students would understand. Then I was reminded by my daughter, that when I brought her to school on the

344

Development of Green Box sensor module technologies for rail applications  

SciTech Connect

Results of a joint Sandia National Laboratories, University of New Mexico, and New Mexico Engineering Research Institute project to investigate an architecture implementing real-time monitoring and tracking technologies in the railroad industry is presented. The work, supported by the New Mexico State Transportation Authority, examines a family of smart sensor products that can be tailored to the specific needs of the user. The concept uses a strap-on sensor package, designed as a value-added component, integrated into existing industry systems and standards. Advances in sensor microelectronics and digital signal processing permit us to produce a class of smart sensors that interpret raw data and transmit inferred information. As applied to freight trains, the sensors` primary purpose is to minimize operating costs by decreasing losses due to theft, and by reducing the number, severity, and consequence of hazardous materials incidents. The system would be capable of numerous activities including: monitoring cargo integrity, controlling system braking and vehicle acceleration, recognizing component failure conditions, and logging sensor data. A cost-benefit analysis examines the loss of revenue resulting from theft, hazardous materials incidents, and accidents. Customer survey data are combined with the cost benefit analysis and used to guide the product requirements definition for a series of specific applications. A common electrical architecture is developed to support the product line and permit rapid product realization. Results of a concept validation, which used commercial hardware and was conducted on a revenue-generating train, are also reported.

Rey, D.; Breeding, R. [Sandia National Labs., Albuquerque, NM (United States); Hogan, J.; Mitchell, J. [Sandia National Labs., Livermore, CA (United States); McKeen, R.G. [New Mexico Engineering Research Inst., Albuquerque, NM (United States); Brogan, J. [New Mexico Univ., Albuquerque, NM (United States)

1996-04-01T23:59:59.000Z

345

Real-time Combustion Control and Diagnostics Sensor-Pressure Oscillation Monitor  

NLE Websites -- All DOE Office Websites (Extended Search)

Combustion Control and Diagnostics Combustion Control and Diagnostics Sensor-Pressure Oscillation Monitor Opportunity The Department of Energy's National Energy Technology Laboratory (NETL) is seeking licensing partners interested in implementing its patented "Real-Time Combustion Control and Diagnostics Sensor-Pressure Oscillation Monitor" technology. Disclosed is NETL's sensor system and process for monitoring and controlling the amplitude and/or frequencies of dynamic pressure oscillations in combustion systems during active combustion processes. The combustion control and diagnostics sensor (CCADS) is designed for gas turbine combustors that are operated near the fuel-lean flame extinction limit to minimize production of the atmospheric pollutant NOx. CCADS eliminates the problems of flashback,

346

An optimal leakage detection strategy for underground pipelines using magnetic induction-based sensor networks  

Science Conference Proceedings (OSTI)

It is difficult to detect small leakages in underground pipelines with high accuracy and low-energy cost due to the inaccessible underground environments. To this end, the Magnetic Induction (MI)-based wireless sensor network for underground pipeline ... Keywords: deployment and activation of sensors, energy consumption, estimation accuracy, leakage detection and localization, underground pipelines

Xin Tan, Zhi Sun

2013-08-01T23:59:59.000Z

347

Specification verification and validation of wireless sensor network model for environment monitoring  

Science Conference Proceedings (OSTI)

In this paper we propose methodology for modeling and development of wireless sensor network (WSN) application for monitoring, quantifying, verifying and validating organization GHG information. We have discussed preliminary activities and challenges ... Keywords: fault tolerance, formal methods, wireless sensor network (WSN)

R Jaichandran; A. Anthony Irudhayaraj

2011-12-01T23:59:59.000Z

348

QoS supporting and optimal energy allocation for a cluster based wireless sensor network  

Science Conference Proceedings (OSTI)

Wireless sensor networks (WSNs) have become a very active and important area of research due to their potential in civil and military applications. A lot of research works focus on energy efficient routing protocols due to the limited energy of battery-powered ... Keywords: Clustering, Data loss rate, Optimal energy allocation, QoS, Source-to-sink delay, Wireless sensor network

Shensheng Tang; Wei Li

2006-08-01T23:59:59.000Z

349

Real-time classification via sparse representation in acoustic sensor networks  

Science Conference Proceedings (OSTI)

Acoustic Sensor Networks (ASNs) have a wide range of applications in natural and urban environment monitoring, as well as indoor activity monitoring. In-network classification is critically important in ASNs because wireless transmission costs several ... Keywords: ℓ1 minimization, acoustic sensor networks (ASNs), audio classification, sparse approximation

Bo Wei, Mingrui Yang, Yiran Shen, Rajib Rana, Chun Tung Chou, Wen Hu

2013-11-01T23:59:59.000Z

350

PicoCube: a 1 cm3 sensor node powered by harvested energy  

Science Conference Proceedings (OSTI)

The PicoCube is a 1 cm3 sensor node using harvested energy as its source of power. Operating at an average of only 6uW for a tirepressure application, the PicoCube represents a modular and integrated approach to the design of nodes for wireless ... Keywords: active antennas, advanced packaging, energy harvesting, energy management, intelligent sensors, low power

Yuen-Hui Chee; Mike Koplow; Michael Mark; Nathan Pletcher; Mike Seeman; Fred Burghardt; Dan Steingart; Jan Rabaey; Paul Wright; Seth Sanders

2008-06-01T23:59:59.000Z

351

Infrasound Sensor Models and Evaluations  

Science Conference Proceedings (OSTI)

Sandia National Laboratories has continued to evaluate the performance of infrasound sensors that are candidates for use by the International Monitoring System (IMS) for the Comprehensive Nuclear-Test-Ban Treaty Organization. The performance criteria against which these sensors are assessed are specified in ``Operational Manual for Infra-sound Monitoring and the International Exchange of Infrasound Data''. This presentation includes the results of efforts concerning two of these sensors: (1) Chaparral Physics Model 5; and (2) CEA MB2000. Sandia is working with Chaparral Physics in order to improve the capability of the Model 5 (a prototype sensor) to be calibrated and evaluated. With the assistance of the Scripps Institution of Oceanography, Sandia is also conducting tests to evaluate the performance of the CEA MB2000. Sensor models based on theoretical transfer functions and manufacturer specifications for these two devices have been developed. This presentation will feature the results of coherence-based data analysis of signals from a huddle test, utilizing several sensors of both types, in order to verify the sensor performance.

KROMER,RICHARD P.; MCDONALD,TIMOTHY S.

2000-07-31T23:59:59.000Z

352

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

E-Print Network (OSTI)

Special Issue "Underwater Sensor Nodes and Underwater Sensor Networks" A special issue of Sensors (ISSN 1424-8220) Website: http://www.mdpi.com/journal/sensors/special_issues/underwater_sens Journal prediction, oil monitoring and so on. This special issue tries to collect the recent advances on underwater

Chen, Min

353

Selective chemical detection by energy modulation of sensors  

DOE Patents (OSTI)

A portable instrument for use in the field in detecting, identifying, and quantifying a component of a sampled fluid includes a sensor which chemically reacts with the component of interest or a derivative thereof, an electrical heating filament for heating the sample before it is applied to the sensor, and modulating means for continuously varying the temperature of the filament (and hence the reaction rate) between two values sufficient to produce the chemical reaction. In response to this thermal modulation, the sensor produces a modulated output signal, the modulation of which is a function of the activation energy of the chemical reaction, which activation energy is specific to the particular component of interest and its concentration. Microprocessor means compares the modulated output signal with standard responses for a plurality of components to identify and quantify the particular component of interest. 4 figs.

Stetter, J.R.; Otagawa, T.

1985-05-20T23:59:59.000Z

354

for distributed wireless sensor networks  

E-Print Network (OSTI)

MEMS technology is enabling the development of inexpensive, autonomous wireless sensor nodes with volumes ranging from cubic mm to several cubic cm. These tiny sensor nodes can form rapidly deployed, massive distributed networks to allow unobtrusive, spatially dense, sensing and communication. MEMS enable these devices by reducing both the volume and energy consumption of various components. This paper will review some of the wireless sensor nodes under development and applicable MEMS devices for small and efficient optical communication, micropower generation, and sensing. In addition, CMOS post-process micromachining will be discussed as a method of achieving low cost and high integration. 1.

Brett A. Warneke; Kristofer S. J. Pister

2002-01-01T23:59:59.000Z

355

DISTRIBUTED SENSOR FUSION USING DYNAMIC CONSENSUS  

E-Print Network (OSTI)

DISTRIBUTED SENSOR FUSION USING DYNAMIC CONSENSUS Demetri P. Spanos Richard M. Murray California in the underlying network topology and performance, making it an interesting candidate for sensor fusion, Decentralized systems, Graph theoretic models, Sensor Fusion 1. INTRODUCTION Sensor networks are a prominent

Murray, Richard M.

356

Wireless sensor networks for habitat monitoring  

Science Conference Proceedings (OSTI)

We provide an in-depth study of applying wireless sensor networks to real-world habitat monitoring. A set of system design requirements are developed that cover the hardware design of the nodes, the design of the sensor network, and the capabilities ... Keywords: environmental monitoring, habitat monitoring, low power systems, sensor network architecture, wireless sensor networks

Alan Mainwaring; David Culler; Joseph Polastre; Robert Szewczyk; John Anderson

2002-09-01T23:59:59.000Z

357

Multiple sensors with single HVAC system control  

E-Print Network (OSTI)

sensor; HVAC; control system; optimization; multi channeloptimization method is designed to be independent of the HVAC

Lin, Craig; Federspiel, Clifford; Auslander, David

2002-01-01T23:59:59.000Z

358

Secure multidimensional range queries in sensor networks  

Science Conference Proceedings (OSTI)

Most future large-scale sensor networks are expected to follow a two-tier architecture which consists of resource-rich master nodes at the upper tier and resource-poor sensor nodes at the lower tier. Sensor nodes submit data to nearby master nodes which ... Keywords: multidimensional range query, security, sensor networks,

Rui Zhang; Jing Shi; Yanchao Zhang

2009-05-01T23:59:59.000Z

359

A logic approach to virtual sensor networks  

Science Conference Proceedings (OSTI)

This paper presents a technique that builds a layer of virtual sensors over a sensor network. The virtual sensors are able to infer and provide data for the physical sensors that do not work. The key assumption of our approach is that the physical quantities ...

Luciano Caroprese; Carmela Comito; Domenico Talia; Ester Zumpano

2010-08-01T23:59:59.000Z

360

Effects of Pressure on Oxygen Sensors  

Science Conference Proceedings (OSTI)

To measure the effects of pressure on the output of a membrane oxygen sensor and a nonmembrane oxygen sensor, the authors pressure cycled a CTD sensor package in a laboratory pressure facility. The CTD sensor package was cycled from 30 to 6800 db ...

M. J. Atkinson; F. I. M. Thomas; N. Larson

1996-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Argonne TDC: Sensor Technology Available for Licensing  

Emergency Response. Engineering. Environmental Research. Fuel Cells. Imaging Technology. Material Science. Nanotechnology. Physical Sciences. Sensor ...

362

Hydrogen Sensor Testing, Hydrogen Technologies (Fact Sheet)  

DOE Green Energy (OSTI)

Factsheet describing the hydrogen sensor testing laboratory at the National Renewable Energy Laboratory.

Not Available

2008-11-01T23:59:59.000Z

363

Semantic Sensor Net: an extensible framework  

Science Conference Proceedings (OSTI)

Existing approaches for sensor networks suffer from a number of serious drawbacks, including assumption of homogeneous sensor nodes, application-dependency, engineering-orientation, and lack of interoperability. To overcome these drawbacks, we ... Keywords: architecture, data processing, dynamic tagging, framework, semantic information, semantic sensor net, semantics, sensor networks

Lionel M. Ni; Yanmin Zhu; Jian Ma; Qiong Luo; Yunhao Liu; S. C. Cheung; Qiang Yang; Minglu Li; Min-you Wu

2009-04-01T23:59:59.000Z

364

Particulate matter sensor with a heater  

DOE Patents (OSTI)

An apparatus to detect particulate matter. The apparatus includes a sensor electrode, a shroud, and a heater. The electrode measures a chemical composition within an exhaust stream. The shroud surrounds at least a portion of the sensor electrode, exclusive of a distal end of the sensor electrode exposed to the exhaust stream. The shroud defines an air gap between the sensor electrode and the shroud and an opening toward the distal end of the sensor electrode. The heater is mounted relative to the sensor electrode. The heater burns off particulate matter in the air gap between the sensor electrode and the shroud.

Hall, Matthew (Austin, TX)

2011-08-16T23:59:59.000Z

365

Transformer current sensor for superconducting magnetic coils  

DOE Patents (OSTI)

A transformer current sensor having primary turns carrying a primary current for a superconducting coil and secondary turns only partially arranged within the primary turns. The secondary turns include an active winding disposed within the primary turns and a dummy winding which is not disposed in the primary turns and so does not experience a magnetic field due to a flow of current in the primary turns. The active and dummy windings are wound in opposite directions or connected in series-bucking relationship, and are exposed to the same ambient magnetic field. Voltages which might otherwise develop in the active and dummy windings due to ambient magnetic fields thus cancel out. The resultant voltage is purely indicative of the rate of change of current flowing in the primary turns.

Shen, Stewart S. (Oak Ridge, TN); Wilson, C. Thomas (Norris, TN)

1988-01-01T23:59:59.000Z

366

Aircraft Cabin Environmental Quality Sensors  

NLE Websites -- All DOE Office Websites (Extended Search)

Aircraft Cabin Environmental Quality Sensors Aircraft Cabin Environmental Quality Sensors Title Aircraft Cabin Environmental Quality Sensors Publication Type Report Year of Publication 2004 Authors Gundel, Lara A., Thomas W. Kirchstetter, Michael Spears, and Douglas P. Sullivan Keywords carbon monoxide, ozone Abstract Identification of aircraft cabin environmental quality concerns for which sensors may be useful The highest priority environmental indicators identified are ozone and cabin air pressure, followed by carbon monoxide and carbon dioxide with moderate priority, and then relative humidity, airborne particles, and organic contaminants, including engine oil byproducts and pesticides. This list is based on the Congressional requirements and recent scientific literature, starting with information from recent studies (NAS/NRC, ASHRAE/Battelle), and continuing by seeking input from a variety of stakeholders.

367

Simulating networks of wireless sensors  

Science Conference Proceedings (OSTI)

Recent advances in low-power embedded processors, radios, and micro-mechanical systems (MEMs) have made possible the development of networks of wirelessly interconnected sensors. With their focus on applications requiring tight coupling with the physical ...

Sung Park; Andreas Savvides; Mani B. Srivastava

2001-12-01T23:59:59.000Z

368

Functionalized nanoparticles for sensor applications.  

Science Conference Proceedings (OSTI)

We will describe our work on functionalized arrays of nanoparticles crosslinked with short conducting molecules that contain sensing functionalities. These bridging ligands modulate their conductivity based on their interaction with analytes. This functionalized nanoparticles organic ligand composite material once it is assembled between nanogaps electrodes will provide nanosized sensors that can be easily interrogated. These nanogap sensors will be engineered so that they can be fabricated into arrays of different sensor elements. This project consists of a number of different requirements that must be met in order to enable the use of functionalized nanoparticles for sensor applications. The first requirement is the appropriately functionalized nanoparticle. The second is a method to assemble the particles. The third requirement is the generation of a nanogap to contain the nanoparticles. The successes in each of these areas will be discussed as will the sensing behavior of the final films.

Simonson, Robert Joseph; Childs, Kenton David; Howell, Stephen Wayne; Dirk, Shawn M.; Wheeler, David Roger

2005-09-01T23:59:59.000Z

369

Forest Products: Acoustic Humidity Sensor  

SciTech Connect

The new acoustic sensor, designed as a humidity-control system for the paper and textile industries, can both eliminate overdrying and improve product quality by measuring humidity precisely. This new fact sheet explains how the process works.

Poole, L.; Recca, L.

1999-01-29T23:59:59.000Z

370

Sensor applications of carbon nanotubes  

E-Print Network (OSTI)

A search of published research on sensing mechanisms of carbon nanotubes was performed to identify applications in which carbon nanotubes might improve on current sensor technologies, in either offering improved performance, ...

Rushfeldt, Scott I

2005-01-01T23:59:59.000Z

371

Compact orthogonal NMR field sensor  

DOE Patents (OSTI)

A Compact Orthogonal Field Sensor for emitting two orthogonal electro-magnetic fields in a common space. More particularly, a replacement inductor for existing NMR (Nuclear Magnetic Resonance) sensors to allow for NMR imaging. The Compact Orthogonal Field Sensor has a conductive coil and a central conductor electrically connected in series. The central conductor is at least partially surrounded by the coil. The coil and central conductor are electrically or electro-magnetically connected to a device having a means for producing or inducing a current through the coil and central conductor. The Compact Orthogonal Field Sensor can be used in NMR imaging applications to determine the position and the associated NMR spectrum of a sample within the electro-magnetic field of the central conductor.

Gerald, II, Rex E. (Brookfield, IL); Rathke, Jerome W. (Homer Glen, IL)

2009-02-03T23:59:59.000Z

372

Reliable networks with unreliable sensors  

Science Conference Proceedings (OSTI)

Wireless sensor networks (WSNs) deployed in hostile environments suffer from a high rate of node failure. We investigate the effect of such failure rate on network connectivity. We provide a formal analysis that establishes the relationship between node ...

Srikanth Sastry; Tsvetomira Radeva; Jianer Chen; Jennifer L. Welch

2011-01-01T23:59:59.000Z

373

Using Unmanned Aerial Vehicles to Assess Vegetative Cover in Sagebrush Steppe Ecosytstems  

SciTech Connect

The Idaho National Laboratory (INL), in conjunction with the University of Idaho, is evaluating novel approaches for using unmanned aerial vehicles (UAVs) as a quicker and safer method for monitoring biotic resources. Evaluating vegetative cover is an important factor in understanding the sustainability of many ecosystems. In assessing vegetative cover, methods that improve accuracy and cost efficiency could revolutionize how biotic resources are monitored on western federal lands. Sagebrush steppe ecosystems provide important habitat for a variety of species, some of which are important indicator species (e.g., sage grouse). Improved methods are needed to support monitoring these habitats because there are not enough resource specialists or funds available for comprehensive ground evaluation of these ecosystems. In this project, two types of UAV platforms (fixed wing and helicopter) were used to collect still-frame imagery to assess cover in sagebrush steppe ecosystems. This paper discusses the process for collecting and analyzing imagery from the UAVs to (1) estimate total percent cover, (2) estimate percent cover for six different types of vegetation, and (3) locate sage grouse based on representative decoys. The field plots were located on the INL site west of Idaho Falls, Idaho, in areas with varying amounts and types of vegetative cover. A software program called SamplePoint developed by the U.S. Department of Agriculture, Agricultural Research Service (USDA-ARS) was used to evaluate the imagery for percent cover for the six vegetation types (bare ground, litter, shrubs, dead shrubs, grasses, and forbs). Results were compared against standard field measurements to assess accuracy.

Robert P. Breckenridge

2005-09-01T23:59:59.000Z

374

Constructing a GIS-based 3D urban model using LiDAR and aerial photographs  

E-Print Network (OSTI)

Due to the increasing availability of high-resolution remotely sensed imagery and detailed terrain surface elevation models, urban planners and municipal managers can now model and visualize the urban space in three dimensions. The traditional approach to the representation of urban space is 2D planimetric maps with building footprints, facilities and road networks. Recently, a number of methods have been developed to represent true 3D urban models. Those include panoramic imaging, Virtual Reality Modeling Language (VRML), and Computer-aided Design (CAD). These methods focus on aesthetic representation, but they do not have sufficient spatial query and analytical capabilities. This research evaluates the conventional approaches to 3D urban models, and identifies their advantages and limitations; GIS functionalities have been combined with 3D urban visualization techniques to develop a GIS-based urban modeling method; The algorithms and techniques have been explored to derive urban objects and their attributes from airborne LiDAR and high-resolution imagery for constructing and visualizing 3D urban models; and 3D urban models for the Texas A&M University (TAMU) campus and downtown Houston have been implemented using the algorithms and techniques developed in this research. By adding close-range camera images and highresolution aerial photographs as the texture of urban objects, effect of photorealism visualization has been achieved for walk-through and fly-through animations. The Texas A&M University campus model and the downtown Houston model have been implemented to offer proof-of-concept, namely, to demonstrate the advantages of the GIS-based approach. These two prototype applications show that the GIS-based 3D urban modeling method, by coupling ArcGIS and MultiGen-Paradigm Site Builder 3D software, can realize the desired functionalities in georeferencing, geographical measurements, spatial query, spatial analysis, and numerical modeling in 3D visual environment.

Lin, Wei-Ming

2004-12-01T23:59:59.000Z

375

Novel Sensor for Transformer Diagnosis  

Science Conference Proceedings (OSTI)

This report details the progress made in the detection of acetylene and hydrogen gas dissolved in oil using novel methods of optical fiber sensing. Of note in this report are the sensitivity and resolution enhancements of the two sensing methods as well as the construction of a field-testable prototype. The sensor’s non-sensitivity to several other gases commonly found in insulating transformer oil is also described. With some further development, the resolution of gas detection can still be ...

2012-12-12T23:59:59.000Z

376

Monday, March 29, 2010 A Bendable Heart Sensor  

E-Print Network (OSTI)

Monday, March 29, 2010 A Bendable Heart Sensor New flexible electronics can better chart the heart a more detailed picture of the electrical activity of a beating heart. This high-resolution electrical map could help improve the diagnosis and treatment of heart abnormalities by pinpointing areas

Rogers, John A.

377

Perception modeling for human-like artificial sensor systems  

Science Conference Proceedings (OSTI)

In this article we present an approach to the design of human-like artificial systems. It uses a perception model to describe how sensory information is processed for a particular task and to correlate human and artificial perception. Since human-like ... Keywords: Active perception, Artificial hand, Artificial perceptual systems, Dexterous manipulation, Electronic tongue, Human-based sensors, Passive perception

Linn Robertsson; Boyko Iliev; Rainer Palm; Peter Wide

2007-05-01T23:59:59.000Z

378

Micromechanical potentiometric sensors  

DOE Green Energy (OSTI)

A microcantilever potentiometric sensor utilized for detecting and measuring physical and chemical parameters in a sample of media is described. The microcantilevered spring element includes at least one chemical coating on a coated region, that accumulates a surface charge in response to hydrogen ions, redox potential, or ion concentrations in a sample of the media being monitored. The accumulation of surface charge on one surface of the microcantilever, with a differing surface charge on an opposing surface, creates a mechanical stress and a deflection of the spring element. One of a multitude of deflection detection methods may include the use of a laser light source focused on the microcantilever, with a photo-sensitive detector receiving reflected laser impulses. The microcantilevered spring element is approximately 1 to 100 .mu.m long, approximately 1 to 50 .mu.m wide, and approximately 0.3 to 3.0 .mu.m thick. An accuracy of detection of deflections of the cantilever is provided in the range of 0.01 nanometers of deflection. The microcantilever apparatus and a method of detection of parameters require only microliters of a sample to be placed on, or near the spring element surface. The method is extremely sensitive to the detection of the parameters to be measured.

Thundat, Thomas G. (Knoxville, TN)

2000-01-01T23:59:59.000Z

379

Beam current sensor  

DOE Patents (OSTI)

A current sensor for measuring the dc component of a beam of charged particles employs a superconducting pick-up loop probe, with twisted superconducting leads in combination with a Superconducting Quantum Interference Device (SQUID) detector. The pick-up probe is in the form of a single-turn loop, or a cylindrical toroid, through which the beam is directed and within which a first magnetic flux is excluded by the Meisner effect. The SQUID detector acts as a flux-to-voltage converter in providing a current to the pick-up loop so as to establish a second magnetic flux within the electrode which nulls out the first magnetic flux. A feedback voltage within the SQUID detector represents the beam current of the particles which transit the pick-up loop. Meisner effect currents prevent changes in the magnetic field within the toroidal pick-up loop and produce a current signal independent of the beam's cross-section and its position within the toroid, while the combination of superconducting elements provides current measurement sensitivities in the nano-ampere range.

Kuchnir, M.; Mills, F.E.

1984-09-28T23:59:59.000Z

380

Micromechanical calorimetric sensor  

DOE Patents (OSTI)

A calorimeter sensor apparatus is developed utilizing microcantilevered spring elements for detecting thermal changes within a sample containing biomolecules which undergo chemical and biochemical reactions. The spring element includes a bimaterial layer of chemicals on a coated region on at least one surface of the microcantilever. The chemicals generate a differential thermal stress across the surface upon reaction of the chemicals with an analyte or biomolecules within the sample due to the heat of chemical reactions in the sample placed on the coated region. The thermal stress across the spring element surface creates mechanical bending of the microcantilever. The spring element has a low thermal mass to allow detection and measuring of heat transfers associated with chemical and biochemical reactions within a sample placed on or near the coated region. A second surface may have a different material, or the second surface and body of microcantilever may be of an inert composition. The differential thermal stress between the surfaces of the microcantilever create bending of the cantilever. Deflections of the cantilever are detected by a variety of detection techniques. The microcantilever may be approximately 1 to 200 .mu.m long, approximately 1 to 50 .mu.m wide, and approximately 0.3 to 3.0 .mu.m thick. A sensitivity for detection of deflections is in the range of 0.01 nanometers. The microcantilever is extremely sensitive to thermal changes in samples as small as 30 microliters.

Thundat, Thomas G. (Knoxville, TN); Doktycz, Mitchel J. (Knoxville, TN)

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Calorimetric gas sensor  

DOE Patents (OSTI)

A combustible gas sensor that uses a resistively heated, noble metal-coated, micromachined polycrystalline Si filament to calorimetrically detect the presence and concentration of combustible gases. The filaments tested to date are 2 .mu.m thick.times.10 .mu.m wide.times.100, 250, 500, or 1000 .mu.m-long polycrystalline Si; some are overcoated with a 0.25 .mu.m-thick protective CVD Si.sub.3 N.sub.4 layer. A thin catalytic Pt film was deposited by CVD from the precursor Pt(acac).sub.2 onto microfilaments resistively heated to approximately 500.degree. C.; Pt deposits only on the hot filament. Using a constant-resistance-mode feedback circuit, Pt-coated filaments operating at ca. 300.degree. C. (35 mW input power) respond linearly, in terms of the change in supply current required to maintain constant resistance (temperature), to H.sub.2 concentrations between 100 ppm and 1% in an 80/20 N.sub.2 /O.sub.2 mixture. Other catalytic materials can also be used.

Ricco, Antonio J. (Albuquerque, NM); Hughes, Robert C. (Cedar Crest, NM); Smith, James H. (Albuquerque, NM); Moreno, Daniel J. (Albuquerque, NM); Manginell, Ronald P. (Albuquerque, NM); Senturia, Stephen D. (Brookline, MA); Huber, Robert J. (Bountiful, UT)

1998-01-01T23:59:59.000Z

382

Calorimetric gas sensor  

DOE Patents (OSTI)

A combustible gas sensor is described that uses a resistively heated, noble metal-coated, micromachined polycrystalline Si filament to calorimetrically detect the presence and concentration of combustible gases. The filaments tested to date are 2 {micro}m thick {times} 10{micro}m wide {times} 100, 250, 500, or 1000 {micro}m-long polycrystalline Si; some are overcoated with a 0.25 {micro}m-thick protective CVD Si{sub 3}N{sub 4} layer. A thin catalytic Pt film was deposited by CVD from the precursor Pt(acac){sub 2} onto microfilaments resistively heated to approximately 500 C; Pt deposits only on the hot filament. Using a constant-resistance-mode feedback circuit, Pt-coated filaments operating at ca. 300 C (35 mW input power) respond linearly, in terms of the change in supply current required to maintain constant resistance (temperature), to H{sub 2} concentrations between 100 ppm and 1% in an 80/20 N{sub 2}/O{sub 2} mixture. Other catalytic materials can also be used. 11 figs.

Ricco, A.J.; Hughes, R.C.; Smith, J.H.; Moreno, D.J.; Manginell, R.P.; Senturia, S.D.; Huber, R.J.

1998-11-10T23:59:59.000Z

383

Fiber optic hydrogen sensor  

DOE Patents (OSTI)

Apparatus and method for detecting a chemical substance by exposing an optic fiber having a core and a cladding to the chemical substance so that the chemical substance can be adsorbed onto the surface of the cladding. The optic fiber is coiled inside a container having a pair of valves for controlling the entrance and exit of the substance. Light from a light source is received by one end of the optic fiber, preferably external to the container, and carried by the core of the fiber. Adsorbed substance changes the transmissivity of the fiber as measured by a spectrophotometer at the other end, also preferably external to the container. Hydrogen is detected by the absorption of infrared light carried by an optic fiber with a silica cladding. Since the adsorption is reversible, a sensor according to the present invention can be used repeatedly. Multiple positions in a process system can be monitored using a single container that can be connected to each location to be monitored so that a sample can be obtained for measurement, or, alternatively, containers can be placed near each position and the optic fibers carrying the partially-absorbed light can be multiplexed for rapid sequential reading, by a single spectrophotometer.

Buchanan, B.R.; Prather, W.S.

1991-01-01T23:59:59.000Z

384

Beam current sensor  

DOE Patents (OSTI)

A current sensor for measuring the DC component of a beam of charged particles employs a superconducting pick-up loop probe, with twisted superconducting leads in combination with a Superconducting Quantum Interference Device (SQUID) detector. The pick-up probe is in the form of a single-turn loop, or a cylindrical toroid, through which the beam is directed and within which a first magnetic flux is excluded by the Meisner effect. The SQUID detector acts as a flux-to-voltage converter in providing a current to the pick-up loop so as to establish a second magnetic flux within the electrode which nulls out the first magnetic flux. A feedback voltage within the SQUID detector represents the beam current of the particles which transit the pick-up loop. Meisner effect currents prevent changes in the magnetic field within the toroidal pick-up loop and produce a current signal independent of the beam's cross-section and its position within the toroid, while the combination of superconducting elements provides current measurement sensitivites in the nano-ampere range.

Kuchnir, Moyses (Elmhurst, IL); Mills, Frederick E. (Elburn, IL)

1987-01-01T23:59:59.000Z

385

High Energy Laser Diagnostic Sensors  

Science Conference Proceedings (OSTI)

Recent advancements in high energy laser (HEL) sources have outpaced diagnostic tools capable of accurately quantifying system performance. Diagnostic tools are needed that allow system developers to measure the parameters that define HEL effectiveness. The two critical parameters for quantifying HEL effectiveness are the irradiance on target and resultant rise in target temperature. Off-board sensing has its limitations, including unpredictable changes in the reflectivity of the target, smoke and outgassing, and atmospheric distortion. On-board sensors overcome the limitations of off-board techniques but must survive high irradiance levels and extreme temperatures.We have developed sensors for on-target diagnostics of high energy laser beams and for the measurement of the thermal response of the target. The conformal sensors consist of an array of quantum dot photodetectors and resistive temperature detectors. The sensor arrays are lithographically fabricated on flexible substrates and can be attached to a variety of laser targets. We have developed a nanoparticle adhesive process that provides good thermal contact with the target and that ensures the sensor remains attached to the target for as long as the target survives. We have calibrated the temperature and irradiance sensors and demonstrated them in a HEL environment.

Luke, James R.; Goddard, Douglas N.; Thomas, David [AEgis Technologies Group, 10501 Research Rd SE, Suite D, Albuquerque, NM 87123, 505-938-9221 (United States); Lewis, Jay [RTI International, Research Triangle Park, NC (United States)

2010-10-08T23:59:59.000Z

386

Tracking-history-based Sleeping Policies for Wireless Sensor Networks.  

E-Print Network (OSTI)

??A wireless sensor network can be used to track an object. Every sensor has limited energy and detecting range. In order to conserve energy, sensors… (more)

Gau, Ding-hau

2009-01-01T23:59:59.000Z

387

MAC and Routing Protocols for Mobile Underwater Acoustic Sensor Swarms  

E-Print Network (OSTI)

Pressure Routing for Underwater Sensor Networks . . . . . .of Aloha Protocols for Underwater Acoustic Sensor Networks.Critical Applications in Underwater Sensor Networks. In

Noh, Young Tae

2012-01-01T23:59:59.000Z

388

Information-based self-organization of sensor nodes of a sensor network  

DOE Patents (OSTI)

A sensor node detects a plurality of information-based events. The sensor node determines whether at least one other sensor node is an information neighbor of the sensor node based on at least a portion of the plurality of information-based events. The information neighbor has an overlapping field of view with the sensor node. The sensor node sends at least one communication to the at least one other sensor node that is an information neighbor of the sensor node in response to at least one information-based event of the plurality of information-based events.

Ko, Teresa H. (Castro Valley, CA); Berry, Nina M. (Tracy, CA)

2011-09-20T23:59:59.000Z

389

Aerial Measurement of Radioxenon Concentration off the West Coast of Vancouver Island following the Fukushima Reactor Accident  

E-Print Network (OSTI)

In response to the Fukushima nuclear reactor accident, on March 20th, 2011, Natural Resources Canada conducted aerial radiation surveys over water just off of the west coast of Vancouver Island. Dose-rate levels were found to be consistent with background radiation, however a clear signal due to Xe-133 was observed. Methods to extract Xe-133 count rates from the measured spectra, and to determine the corresponding Xe-133 volumetric concentration, were developed. The measurements indicate that Xe-133 concentrations on average lie in the range of 30 to 70 Bq/m3.

L. E. Sinclair; H. C. J. Seywerd; R. Fortin; J. M. Carson; P. R. B. Saull; M. J. Coyle; R. A. Van Brabant; J. L. Buckle; S. M. Desjardins; R. M. Hall

2011-06-20T23:59:59.000Z

390

Extraction of Point Source Gamma Signals from Aerial Survey Data Taken over a Las Vegas Nevada Residential Area  

SciTech Connect

Detection of point-source gamma signals from aerial measurements is complicated by widely varying terrestrial gamma backgrounds, since these variations frequently resemble signals from point-sources. Spectral stripping techniques have been very useful in separating man-made and natural radiation contributions which exist on Energy Research and Development Administration (ERDA) plant sites and other like facilities. However, these facilities are generally situated in desert areas or otherwise flat terrain with few man-made structures to disturb the natural background. It is of great interest to determine if the stripping technique can be successfully applied in populated areas where numerous man-made disturbances (houses, streets, yards, vehicles, etc.) exist.

Thane J. Hendricks

2007-05-01T23:59:59.000Z

391

Distributed Optical Sensor for CO2 Leak Detection  

NLE Websites -- All DOE Office Websites (Extended Search)

Optical Sensor for CO Optical Sensor for CO 2 Leak Detection Opportunity Research is active on the technology "Distributed Optical Sensor for CO 2 Leak Detection," for which a Patent Application has been filed. This technology is available for licensing and/or further collaborative research from the U.S. Department of Energy's National Energy Technology Laboratory (NETL). Overview The availability of fossil fuels to provide clean, affordable energy is essential for domestic and global prosperity and security well into the 21st century. However, there are concerns over the impacts of greenhouse gases (GHGs) in the atmosphere-particularly carbon dioxide (CO 2 ). Carbon capture and storage in geologic formations is a promising technology to reduce the impact of CO

392

Application Of High-Resolution Thermal Infrared Sensors For Geothermal  

Open Energy Info (EERE)

High-Resolution Thermal Infrared Sensors For Geothermal High-Resolution Thermal Infrared Sensors For Geothermal Exploration At The Salton Sea, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Application Of High-Resolution Thermal Infrared Sensors For Geothermal Exploration At The Salton Sea, California Details Activities (2) Areas (1) Regions (0) Abstract: The Salton Sea geothermal field straddles the southeast margin of the Salton Sea in California, USA. This field includes approximately 20km2 of mud volcanoes and mud pots and centered on the Mullet Island thermal anomaly. The area has been previously exploited for geothermal power; there are currently seven power plants in the area that produce 1000 MW. The field itself is relatively un-vegetated, which provides for unfettered

393

Novel Gas Sensors for High-Temperature Fossil Fuel Applications  

SciTech Connect

SRI International (SRI) is developing ceramic-based microsensors to detect exhaust gases such as NO, NO{sub 2}, and CO in advanced combustion and gasification systems under this DOE NETL-sponsored research project. The sensors detect the electrochemical activity of the exhaust gas species on catalytic electrodes attached to a solid state electrolyte and are designed to operate at the high temperatures, elevated pressures, and corrosive environments typical of large power generation exhausts. The sensors can be easily integrated into online monitoring systems for active emission control. The ultimate objective is to develop sensors for multiple gas detection in a single package, along with data acquisition and control software and hardware, so that the information can be used for closed-loop control in novel advanced power generation systems. This report details the Phase I Proof-of-Concept, research activities performed from October 2003 to March 2005. SRI's research work includes synthesis of catalytic materials, sensor design and fabrication, software development, and demonstration of pulse voltammetric analysis of NO, NO{sub 2}, and CO gases on catalytic electrodes.

Palitha Jayaweera; Francis Tanzella

2005-03-01T23:59:59.000Z

394

Molecular oxygen sensors based on photoluminescent silica aerogels  

NLE Websites -- All DOE Office Websites (Extended Search)

Molecular oxygen sensors based on photoluminescent silica aerogels Molecular oxygen sensors based on photoluminescent silica aerogels Title Molecular oxygen sensors based on photoluminescent silica aerogels Publication Type Journal Article Year of Publication 1998 Authors Ayers, Michael R., and Arlon J. Hunt Journal Journal of Non-Crystalline Solids Volume 225 Pagination 343-347 Keywords aerogel, air pressure, oxygen concentration, oxygen molecules, photoluminescence Abstract Photoluminescent silica aerogel acts as the active element of an optical sensor for molecular oxygen. The luminescent aerogel is prepared by the action of energized reducing gases on a standard silica aerogel. Intensity of aerogel photoluminescence decreases as the collision frequency between oxygen molecules and the luminescent carriers in the aerogel matrix increases. This behavior is a characteristic of many photoluminescent materials and arises from a transfer of energy from the aerogel to surrounding oxygen molecules. A sensor for oxygen concentration or air pressure can therefore be simply constructed utilizing an ultraviolet source for excitation and a suitable detector for the emitted visible signal. Stern-Volmer quenching constants for the aerogel sensing element are 1.55×10-2 Torr-1 for hydrophilic aerogel and 2.4×10-3 Torr-1 for hydrophobic aerogel.

395

Error Detection, Factorization and Correction for Multi-View Scene Reconstruction from Aerial Imagery  

SciTech Connect

Scene reconstruction from video sequences has become a prominent computer vision research area in recent years, due to its large number of applications in fields such as security, robotics and virtual reality. Despite recent progress in this field, there are still a number of issues that manifest as incomplete, incorrect or computationally-expensive reconstructions. The engine behind achieving reconstruction is the matching of features between images, where common conditions such as occlusions, lighting changes and texture-less regions can all affect matching accuracy. Subsequent processes that rely on matching accuracy, such as camera parameter estimation, structure computation and non-linear parameter optimization, are also vulnerable to additional sources of error, such as degeneracies and mathematical instability. Detection and correction of errors, along with robustness in parameter solvers, are a must in order to achieve a very accurate final scene reconstruction. However, error detection is in general difficult due to the lack of ground-truth information about the given scene, such as the absolute position of scene points or GPS/IMU coordinates for the camera(s) viewing the scene. In this dissertation, methods are presented for the detection, factorization and correction of error sources present in all stages of a scene reconstruction pipeline from video, in the absence of ground-truth knowledge. Two main applications are discussed. The first set of algorithms derive total structural error measurements after an initial scene structure computation and factorize errors into those related to the underlying feature matching process and those related to camera parameter estimation. A brute-force local correction of inaccurate feature matches is presented, as well as an improved conditioning scheme for non-linear parameter optimization which applies weights on input parameters in proportion to estimated camera parameter errors. Another application is in reconstruction pre-processing, where an algorithm detects and discards frames that would lead to inaccurate feature matching, camera pose estimation degeneracies or mathematical instability in structure computation based on a residual error comparison between two different match motion models. The presented algorithms were designed for aerial video but have been proven to work across different scene types and camera motions, and for both real and synthetic scenes.

Hess-Flores, M

2011-11-10T23:59:59.000Z

396

Range gated strip proximity sensor  

DOE Patents (OSTI)

A range gated strip proximity sensor uses one set of sensor electronics and a distributed antenna or strip which extends along the perimeter to be sensed. A micro-power RF transmitter is coupled to the first end of the strip and transmits a sequence of RF pulses on the strip to produce a sensor field along the strip. A receiver is coupled to the second end of the strip, and generates a field reference signal in response to the sequence of pulse on the line combined with received electromagnetic energy from reflections in the field. The sensor signals comprise pulses of radio frequency signals having a duration of less than 10 nanoseconds, and a pulse repetition rate on the order of 1 to 10 MegaHertz or less. The duration of the radio frequency pulses is adjusted to control the range of the sensor. An RF detector feeds a filter capacitor in response to received pulses on the strip line to produce a field reference signal representing the average amplitude of the received pulses. When a received pulse is mixed with a received echo, the mixing causes a fluctuation in the amplitude of the field reference signal, providing a range-limited Doppler type signature of a field disturbance. 6 figs.

McEwan, T.E.

1996-12-03T23:59:59.000Z

397

Range gated strip proximity sensor  

DOE Patents (OSTI)

A range gated strip proximity sensor uses one set of sensor electronics and a distributed antenna or strip which extends along the perimeter to be sensed. A micro-power RF transmitter is coupled to the first end of the strip and transmits a sequence of RF pulses on the strip to produce a sensor field along the strip. A receiver is coupled to the second end of the strip, and generates a field reference signal in response to the sequence of pulse on the line combined with received electromagnetic energy from reflections in the field. The sensor signals comprise pulses of radio frequency signals having a duration of less than 10 nanoseconds, and a pulse repetition rate on the order of 1 to 10 MegaHertz or less. The duration of the radio frequency pulses is adjusted to control the range of the sensor. An RF detector feeds a filter capacitor in response to received pulses on the strip line to produce a field reference signal representing the average amplitude of the received pulses. When a received pulse is mixed with a received echo, the mixing causes a fluctuation in the amplitude of the field reference signal, providing a range-limited Doppler type signature of a field disturbance.

McEwan, Thomas E. (Livermore, CA)

1996-01-01T23:59:59.000Z

398

An aerial radiological survey of the Tonopah Test Range including Clean Slate 1,2,3, Roller Coaster, decontamination area, Cactus Springs Ranch target areas. Central Nevada  

SciTech Connect

An aerial radiological survey was conducted of major sections of the Tonopah Test Range (TTR) in central Nevada from August through October 1993. The survey consisted of aerial measurements of both natural and man-made gamma radiation emanating from the terrestrial surface. The initial purpose of the survey was to locate depleted uranium (detecting {sup 238}U) from projectiles which had impacted on the TTR. The examination of areas near Cactus Springs Ranch (located near the western boundary of the TTR) and an animal burial area near the Double Track site were secondary objectives. When more widespread than expected {sup 241}Am contamination was found around the Clean Slates sites, the survey was expanded to cover the area surrounding the Clean Slates and also the Double Track site. Results are reported as radiation isopleths superimposed on aerial photographs of the area.

Proctor, A.E.; Hendricks, T.J.

1995-08-01T23:59:59.000Z

399

An aerial radiological survey of the Oak Ridge Reservation, Oak Ridge, Tennessee. Date of survey: April 1992  

Science Conference Proceedings (OSTI)

An aerial radiological survey of the Oak Ridge Reservation (ORR) and surrounding area in Oak Ridge, Tennessee, was conducted during the period March 30 to April 14,1992. The purpose of the survey was to measure and document the terrestrial radiological environment of the Oak Ridge Reservation for use in environmental management programs and emergency response planning. The aerial survey was flown at an altitude of 150 feet (46 meters) along a series of parallel lines 250 feet (76 meters) apart and included X-10 (Oak Ridge National Laboratory), K-25 (former Gaseous Diffusion Plant), Y-12 (Weapons Production Plant), the Freels Bend Area and Oak Ridge Institute for Science and Education, the East Fork Poplar Creek (100-year floodplain extending from K-25 to Y-12), Elza Gate (former uranium ore storage site located in the city of Oak Ridge), Parcel A, the Clinch River (river banks extending from Melton Hill Dam to the city of Kingston), and the CSX Railroad Tracks (extending from Y-12 to the city of Oak Ridge). The survey encompassed approximately 55 square miles (1 41 square kilometers) of the Oak Ridge Reservation and surrounding area.

Maurer, R.J.

1993-04-01T23:59:59.000Z

400

Development of NOx Sensors for Heavy Vehicle Applications  

SciTech Connect

The primary gaseous pollutants (excluding CO{sub 2}) produced by combustion of low-sulfur diesel fuel oxides of nitrogen (NO{sub x}), carbon monoxide (CO), and hydrocarbons (C{sub y}H{sub z}). The last two of these can be readily ameliorated by an oxidation catalyst in the O{sub 2}-rich environment of diesel exhaust but NO{sub x} can not.[1] For this reason NO{sub x} remediation strategies such as selective catalytic reduction (SCR) [2, 3] and the lean NO{sub x} trap (LNT) [4, 5] are being actively pursued. The ideal implementation of these strategies would employ NO{sub x} sensors to control reagent injection in the case of SCR and trap regeneration in the case of LNT. Two different NO{sub x} sensors for this application are at or near commercialization: An amperometric NO{sub x} sensor developed by NGK [6] and a 'mixed potential' NO{sub x} sensor developed by Riken [7]. The NGK sensor works by passing the sampled exhaust through a series of two chambers. In the first chamber O{sub 2} is pumped from the exhaust and in the second, NO{sub x} is decomposed electrochemically and the current from this decomposition is measured in order to determine [NO{sub x}]. Since the NO{sub x} concentrations can be small, on the 10's of ppm levels, the currents produced by decomposing the NO{sub x} can be small and difficult to measure accurately. The Riken sensor functions by passing the exhaust over a 'conversion electrode' that converts the NO{sub x} to NO{sub 2}. This NO{sub 2} is then sensed by a mixed potential sensing element.[8-10] Researchers at Ford evaluated the NGK sensor and observed the above shortcoming (poor for low [NO{sub x}]) as well as others [11] (e.g., asymmetric response to NO vs. NO{sub 2}) and were unable to obtain samples of the Riken sensor. Therefore a CRADA was initiated between Ford an ORNL to investigate the development of NO{sub x} sensors for diesel exhaust applications.

Armstrong, T.R.; West, D. L.; Montgomery, F.C.

2006-11-06T23:59:59.000Z

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Improving microenvironmental exposure assessment with sensor-based  

NLE Websites -- All DOE Office Websites (Extended Search)

Improving microenvironmental exposure assessment with sensor-based Improving microenvironmental exposure assessment with sensor-based time-activity data Speaker(s): Amanda Northcross Date: December 18, 2009 - 2:00pm Location: 90-3122 Exposure assessments to air pollution typically focus on either personal or microenvironmental measurements. Personal measurements can provide more accurate individual exposures, but tend to be intrusive and expensive. Microenvironmental measurements are commonly cheaper and have more flexibility in size, number, and weight requirements of the instrumentation, but must be adjusted by time-activity information for the population of interest. Time-activity data has traditionally been difficult to obtain and imprecise using the available social-science methods or expensive with GPS and more sophisticated equipment. Deployment of new

402

Localized Pipeline Encroachment Detector System Using Sensor Network  

E-Print Network (OSTI)

Detection of encroachment on pipeline right-of-way is important for pipeline safety. An effective system can provide on-time warning while reducing the probability of false alarms. There are a number of industry and academic developments to tackle this problem. This thesis is the first to study the use of a wireless sensor network for pipeline right-of-way encroachment detection. In the proposed method, each sensor node in the network is responsible for detecting and transmitting vibration signals caused by encroachment activities to a base station (computer center). The base station monitors and analyzes the signals. If an encroachment activity is detected, the base station will send a warning signal. We describe such a platform with hardware configuration and software controls, and the results demonstrate that the platform is able to report our preliminary experiments in detecting digging activities by a tiller in the natural and automotive noise.

Ou, Xiaoxi 1986-

2011-08-01T23:59:59.000Z

403

System architecture directions for networked sensors  

Science Conference Proceedings (OSTI)

Technological progress in integrated, low-power, CMOS communication devices and sensors makes a rich design space of networked sensors viable. They can be deeply embedded in the physical world and spread throughout our environment like smart dust. The ...

Jason Hill; Robert Szewczyk; Alec Woo; Seth Hollar; David Culler; Kristofer Pister

2000-12-01T23:59:59.000Z

404

NETL: Advanced Research - Sensors & Controls Innovations  

NLE Websites -- All DOE Office Websites (Extended Search)

Sensors & Controls Sensors & Controls Advanced Research Sensors & Controls Innovations OSU's O2 Sensor Ohio State University's reference-free potentiometric oxygen sensor capable of withstanding temperatures of 800 °C. Novel Sensors and Advanced Process Control Novel Sensors and Advanced Process Control are key enabling technologies for advanced near zero emission power systems. NETL's Advanced Research Program is leading the effort to develop sensing and control technologies and methods to achieve seamless, integrated, automated, optimized, and intelligent power systems. Today, the performance of advanced power systems is limited by the lack of sensors and controls capable of withstanding high temperature and pressure conditions. Harsh environments are inherent to new systems that aim to

405

Design of wireless sensors for automobiles  

Science Conference Proceedings (OSTI)

Automobile manufacturers require sense data to analyse and improve the driving experience. Currently, sensors are physically wired to both data collectors and the car battery, thus the number of wires scale linearly with sensors. We design alternative ...

Olga L. Diaz–Gutierrez; Richard Hall

2005-12-01T23:59:59.000Z

406

On target tracking with binary proximity sensors  

Science Conference Proceedings (OSTI)

We consider the use of binary proximity sensors for tracking targets. Such sensors provide only 1-bit information regarding a target's presence or absence in their vicinity, albeit with less than 100% reliability. A novel tracking method employing such ...

Wooyoung Kim; Kirill Mechitov; Jeung-Yoon Choi; Soo Ham

2005-04-01T23:59:59.000Z

407

Underwater Sensor Networks: Applications, Advances, and Challenges  

E-Print Network (OSTI)

Underwater Sensor Networks: Applications, Advances, and Challenges By John Heidemann1 , Milica- mentation of underwater wireless sensor networks. We summarize key applications and the main phenomena hardware, testbeds, and simulation tools available to the research community. Keywords: underwater

Heidemann, John

408

Decentralized, adaptive resource allocation for sensor networks  

Science Conference Proceedings (OSTI)

This paper addresses the problem of resource allocation in sensor networks. We are concerned with how to allocate limited energy, radio bandwidth, and other resources to maximize the value of each node's contribution to the network. Sensor networks present ...

Geoffrey Mainland; David C. Parkes; Matt Welsh

2005-05-01T23:59:59.000Z

409

Intrusion Detection: Characterising intrusion detection sensors  

Science Conference Proceedings (OSTI)

An intrusion detection sensor is defined as a device that collects and analyses network traffic for the purpose of identifying suspicious events. Too often the value of a sensor is associated with its data collection and analysis features. Experience ...

Siraj A. Shaikh; Howard Chivers; Philip Nobles; John A. Clark; Hao Chen

2008-09-01T23:59:59.000Z

410

Calibrating Cylindrical Hot-Film Anemometer Sensors  

Science Conference Proceedings (OSTI)

We report the results of 82 separate calibrations of cylindrical, platinum hot-film anemometer sensors in air. The calibrations for each sensor involved a determination of its temperature-resistance characteristics, a study of its heat transfer ...

Edgar L. Andreas; Brett Murphy

1986-06-01T23:59:59.000Z

411

Cantilever Sensors: Nanomechanical Tools for Diagnostics  

E-Print Network (OSTI)

Cantilever sensors have attracted considerable attention over the last decade because of their potential as a highly sensitive sensor platform for high throughput and multiplexed detection of proteins and nucleic acids. A ...

Datar, Ram

412

Harsh Environment Silicon Carbide Sensor Technology Geothermal...  

Open Energy Info (EERE)

and mechanical robustness of SiC sensors at temperatures as high as 600oC and in dry steam. State California Objectives In the proposed work, two types of physical sensors...

413

Intelligent Light Control using Sensor Networks  

E-Print Network (OSTI)

Increasing user comfort and reducing operation costs have always been two primary objectives of building operations and control strategies. Current building control strategies are unable to incorporate occupant level comfort and meet the operation goals simultaneously. In this paper, we present a novel utility-based building control strategy that optimizes the tradeo# between meeting user comfort and reduction in operation cost by reducing energy usage. We present an implementation of the proposed approach as an intelligent lighting control strategy that significantly reduces energy cost. Our approach is based on a principled, decision theoretic formulation of the control task. We demonstrate the use of mobile wireless sensor networks to optimize the tradeo # between fulfilling di#erent occupants' light preferences and minimizing energy consumption. We further extend our approach to optimally exploit external light sources for additional energy savings, a process called daylight harvesting. Also we demonstrate that an active sensing approach can maximize the mobile sensor network's lifetime by sensing only during most informative situations. We provide e#cient algorithms for solving the underlying complex optimization problems, and extensively evaluate our proposed approach in a proof-of-concept testbed using MICA2 motes and dimmable lamps. Our results indicate a significant improvement in user utility and reduced energy expenditure.

Vipul Singhvi Civil; Vipul Singhvi; Civil Engineering Dept; James H. Garrett

2005-01-01T23:59:59.000Z

414

Sensor Control Unit Light Submitted by:  

E-Print Network (OSTI)

With the growing need to conserve energy, more people are becoming conscious of energy consumption and are looking for ways to reduce costly waste associated with electricity. Though most consumers do not think about lighting until the light bulb fails or the power goes out, expenses incurred due to lighting have been found to be a large part of overall energy consumption and lighting has now become the focus of efforts aimed at reducing the high cost of electricity. The purpose of our project is to design an Automatic Light Control Device (ALCD) to help curb the high cost of internal lighting while creating a convenient effortlessly lighted environment for the consumer. Today, energy saving devices, such as occupancy or motion sensors, is used by a multiple of people for the conservation of power. Motion detectors cause lights to turn on after entering the room and off after no movement is detected for a certain amount of time. This unit is efficient; however, energy is loss due to the presence and absence of movement in a particular room by the sensor continuously activating on or off. Unneeded cycling uses more power and defeats the intended purpose of saving energy. The ALCD will save energy by eliminating false conditions, thereby minimizing light

Professor Joseph Picone; Ece Senior Design I; John Thompson; Marshalia Green; Brad Lowe; Lutrisha Johnson; Automatic Light Control Device

2001-01-01T23:59:59.000Z

415

Clustering of wireless sensor and actor networks based on sensor distribution and connectivity  

Science Conference Proceedings (OSTI)

Wireless Sensor and Actor Networks (WSANs) employ significantly more capable actor nodes that can collect data from sensors and perform application specific actions. To take these actions collaboratively at any spot in the monitored regions, maximal ... Keywords: Actor placement, Clustering, Connectivity, Energy-efficiency, Messaging overhead, Sensor distribution, Wireless sensor and actor networks

Kemal Akkaya; Fatih Senel; Brian McLaughlan

2009-06-01T23:59:59.000Z

416

Sensors and Instrumentation and Nondestructive Evaluation - Nuclear...  

NLE Websites -- All DOE Office Websites (Extended Search)

Capabilities Sensors and Instrumentation and Nondestructive Evaluation Overview Energy System Applications Safety-Related Applications Homeland Security Applications...

417

NIST Sensor Science Division Office Staff Directory  

Science Conference Proceedings (OSTI)

... Associates. Name, Position, Office Phone. Parr, Albert, Physicist, 301-975- 2316. ... Contact. Sensor Science Division Gerald Fraser, Division Chief. ...

2013-04-10T23:59:59.000Z

418

NIST, Sensor Science Division, Ultraviolet Radiation Group ...  

Science Conference Proceedings (OSTI)

... Physicist Sensor Science Division Ultraviolet Radiation Group. ... Ph.D. Optical Sciences and Engineering ... Orlando, FL MS Electrical Engineering, The ...

2013-03-21T23:59:59.000Z

419

Millimeter Wave Group's Publications - Sensors, Detectors & Diagnostic...  

NLE Websites -- All DOE Office Websites (Extended Search)

> Sensors & Instrumentation > MMW Group's publications DEPARTMENTS Engineering Analysis Nuclear Systems Analysis Research & Test Reactor Nonproliferation and National Security...

420

Piezoelectric Fiber Fabrication for Magnetoelectric Sensors  

Science Conference Proceedings (OSTI)

Optical Properties of Bifeo3: Polar Oxides for Fundamental Science and Solar Energy Applications · Piezoelectric Fiber Fabrication for Magnetoelectric Sensors

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Combustible gas sensor interference test report  

DOE Green Energy (OSTI)

Result of Laboratory Interference testing of the Sierra Monitor Corporation Gas Sensor, number model 4101-2, are documented.

Webb, B.J., Westinghouse Hanford

1996-07-30T23:59:59.000Z

422

Risk-Based Sensor Placement Methodology  

Current methods for sensor placement are based on qualitative approaches ranging from “best guess” to expensive, customized studies.

423

Mobile sensor network to monitor wastewater collection pipelines  

E-Print Network (OSTI)

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

Lim, Jungsoo

2012-01-01T23:59:59.000Z

424

Reliable and efficient reprogramming in sensor networks  

Science Conference Proceedings (OSTI)

Retasking and remote programming of sensor networks is an essential functionality to make these networks practical and effective. As the availability of more capable sensor nodes increases and new functional implementations continue to be proposed, these ... Keywords: Broadcast, energy efficiency, minimum energy broadcast, reliable distribution, reprogramming, retasking, sensor networks

Chris Miller; Christian Poellabauer

2010-08-01T23:59:59.000Z

425

Automatic decentralized clustering for wireless sensor networks  

Science Conference Proceedings (OSTI)

We propose a decentralized algorithm for organizing an ad hoc sensor network into clusters. Each sensor uses a random waiting timer and local criteria to determine whether to form a new cluster or to join a current cluster. The algorithm operates without ... Keywords: clustering algorithm, random waiting timer, wireless sensor networks

Chih-Yu Wen; William A. Sethares

2005-10-01T23:59:59.000Z

426

Zonal Rumor Routing for Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

Routing algorithms for wireless sensor networks are constrained by power, memory and computational resources. Rumor Routing algorithm for sensor networks spreads theinformation of an event to other nodes in the network, thus enabling queries to discover ... Keywords: Sensor Network, Routing, Wireless, Rumor Routing

Tarun Banka; Gagan Tandon; Anura P. Jayasumana

2005-04-01T23:59:59.000Z

427

Securing network access in wireless sensor networks  

Science Conference Proceedings (OSTI)

In wireless sensor networks, it is critical to restrict the network access only to eligible sensor nodes, while messages from outsiders will not be forwarded in the networks. In this paper, we present the design, implementation, and evaluation of a secure ... Keywords: elliptic curve cryptography, security, sensor networks

Kun Sun; An Liu; Roger Xu; Peng Ning; Douglas Maughan

2009-03-01T23:59:59.000Z

428

Distributed user access control in sensor networks  

Science Conference Proceedings (OSTI)

User access control in sensor networks defines a process of granting user the access right to the information and resources. It is essential for the future real sensor network deployment in which sensors may provide users with different services in terms ...

Haodong Wang; Qun Li

2006-06-01T23:59:59.000Z

429

Optimizing sensor movement planning for energy efficiency  

Science Conference Proceedings (OSTI)

Conserving the energy for motion is an important yet not-well-addressed problem in mobile sensor networks. In this article, we study the problem of optimizing sensor movement for energy efficiency. We adopt a complete energy model to characterize the ... Keywords: Mobile sensor, energy efficiency

Guiling Wang; Mary Jane Irwin; Haoying Fu; Piotr Berman; Wensheng Zhang; Tom La Porta

2011-02-01T23:59:59.000Z

430

Fiber-optic pressure sensor  

DOE Patents (OSTI)

A pressure wave sensor utilizing fiber optic interferometry techniques to determine pressure in a bar. Light from a fiber optic coil around the bar is mixed with light from a reference optical fiber to produce interference fringes as a function of time. These fringes over time are related to the pressure versus time existing in the bar. 2 figs.

Dingus, R.S.

1989-03-10T23:59:59.000Z

431

Spatiotemporal multicast in sensor networks  

Science Conference Proceedings (OSTI)

Sensor networks often involve the monitoring of mobile phenomena. We believe this task can be facilitated by a spatiotemporal multicast protocol which we call "mobicast". Mobicast is a novel spatiotemporal multicast protocol that distributes a message ... Keywords: mobicast, network geometry, protocols, spatiotemporal multicast, wireless ad hoc networks

Qingfeng Huang; Chenyang Lu; Gruia-Catalin Roman

2003-11-01T23:59:59.000Z

432

Note: Helical nanobelt force sensors  

Science Conference Proceedings (OSTI)

We present the fabrication and characterization of helical nanobelt force sensors. These self-sensing force sensors are based on the giant piezoresistivity of helical nanobelts. The three-dimensional helical nanobelts are self-formed from 27 nm-thick n-type InGaAs/GaAs bilayers using rolled-up techniques, and assembled onto electrodes on a micropipette using nanorobotic manipulations. The helical nanobelt force sensors can be calibrated using a calibrated atomic force microscope cantilever system under scanning electron microscope. Thanks to their giant piezoresistance coefficient (515 Multiplication-Sign 10{sup -10} Pa{sup -1}), low stiffness (0.03125 N/m), large-displacement capability ({approx}10 {mu}m), and good fatigue resistance, they are well suited to function as stand-alone, compact ({approx}20 {mu}m without the plug-in support), light ({approx}5 g including the plug-in support), versatile and large range ({approx}{mu}N) and high resolution ({approx}nN) force sensors.

Hwang, G. [Laboratory for Photonics and Nanostructures, Centre National de la Recherche Scientifique, Marcoussis 91460 (France); Hashimoto, H. [Department of EECE, Chuo University 1-13-27 Kasuga, Bunkyo-ku, Tokyo (Japan)

2012-12-15T23:59:59.000Z

433

Battery system with temperature sensors  

SciTech Connect

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.

Wood, Steven J.; Trester, Dale B.

2012-11-13T23:59:59.000Z

434

A survey on wireless sensor network infrastructure for agriculture  

Science Conference Proceedings (OSTI)

The hybrid wireless sensor network is a promising application of wireless sensor networking techniques. The main difference between a hybrid WSN and a terrestrial wireless sensor network is the wireless underground sensor network, which communicates ... Keywords: Agriculture, Hybrid wireless sensor network, Information collection, Monitoring, Wireless underground sensor network

Xiaoqing Yu; Pute Wu; Wenting Han; Zenglin Zhang

2013-01-01T23:59:59.000Z

435

A Delaunay Triangulation based method for wireless sensor network deployment  

Science Conference Proceedings (OSTI)

To obtain a satisfied performance of wireless sensor network, an adaptable sensor deployment method for various applications is essential. In this paper, we propose a centralized and deterministic sensor deployment method, DT-Score (Delaunay Triangulation-Score), ... Keywords: Delaunay Triangulation, Obstacles, Sensor coverage, Sensor deployment, Wireless sensor network

Chun-Hsien Wu; Kuo-Chuan Lee; Yeh-Ching Chung

2007-10-01T23:59:59.000Z

436

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)

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

Rogers, John A.

437

Integrated Analysis of Environment-driven Operational Effects in Sensor Networks  

Science Conference Proceedings (OSTI)

There is a rapidly growing need to evaluate sensor network functionality and performance in the context of the larger environment of infrastructure and applications in which the sensor network is organically embedded. This need, which is motivated by complex applications related to national security operations, leads to a paradigm fundamentally different from that of traditional data networks. In the sensor networks of interest to us, the network dynamics depend strongly on sensor activity, which in turn is triggered by events in the environment. Because the behavior of sensor networks is sensitive to these driving phenomena, the integrity of the sensed observations, measurements and resource usage by the network can widely vary. It is therefore imperative to accurately capture the environmental phenomena, and drive the simulation of the sensor network operation by accounting fully for the environment effects. In this paper, we illustrate the strong, intimate coupling between the sensor network operation and the driving phenomena in their applications with an example sensor network designed to detect and track gaseous plumes.

Park, Alfred J [ORNL; Perumalla, Kalyan S [ORNL

2007-07-01T23:59:59.000Z

438

A Task Based Sensor-Centeric Model for overall Energy Consumption  

E-Print Network (OSTI)

Sensors have limited resources so it is important to manage the resources efficiently to maximize their use. A sensor's battery is a crucial resource as it singly determines the lifetime of sensor network applications. Since these devices are useful only when they are able to communicate with the world, radio transceiver of a sensor as an I/O and a costly unit plays a key role in its lifetime. This resource often consumes a big portion of the sensor's energy as it must be active most of the time to announce the existence of the sensor in the network. As such the radio component has to deal with its embedded sensor network whose parameters and operations have significant effects on the sensor's lifetime. In existing energy models, hardware is considered, but the environment and the network's parameters did not receive adequate attention. Energy consumption components of traditional network architecture are often considered individually and separately, and their influences on each other have not been considered...

Kamyabpour, Najmeh

2012-01-01T23:59:59.000Z

439

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

SciTech Connect

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.

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

2005-05-01T23:59:59.000Z

440

Integrated Micro-Machined Hydrogen Gas Sensor. Final Report  

DOE Green Energy (OSTI)

This report details our recent progress in developing novel MEMS (Micro-Electro-Mechanical Systems) based hydrogen gas sensors. These sensors couple novel thin films as the active layer on a device structure known as a Micro-HotPlate. This coupling has resulted in a gas sensor that has several unique advantages in terms of speed, sensitivity, stability and amenability to large scale manufacture. This Phase-I research effort was focused on achieving the following three objectives: (1) Investigation of sensor fabrication parameters and their effects on sensor performance. (2) Hydrogen response testing of these sensors in wet/dry and oxygen-containing/oxygen-deficient atmospheres. (3) Investigation of the long-term stability of these thin film materials and identification of limiting factors. We have made substantial progress toward achieving each of these objectives, and highlights of our phase I results include the demonstration of signal responses with and without oxygen present, as well as in air with a high level of humidity. We have measured response times of <0.5 s to 1% H{sub 2} in air, and shown the ability to detect concentrations of <200 ppm. These results are extremely encouraging and suggest that this technology has substantial potential for meeting the needs of a hydrogen based economy. These achievements demonstrate the feasibility of using micro-hotplates structures in conjunction with palladium+coated metal-hydride films for sensing hydrogen in many of the environments required by a hydrogen based energy economy. Based on these findings, they propose to continue and expand the development of this technology in Phase II.

Frank DiMeo, Jr.

2000-10-02T23:59:59.000Z

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Sensors for Screening and Surveillance  

SciTech Connect

Much attention, in fact an entire session at this conference, is being devoted to protecting the United States against human threats--individuals who may pose a danger by their mere presence on US soil. However, tomorrow's terrorists will employ weapons in their attacks, and we must also be diligent in preventing these weapons from reaching their targets. Sensors can play an important role in detecting these weapons before they achieve their desired effects. A sensor system can best be understood as a way of automating search techniques that would normally be carried out by a human's touch and vision senses, or by a dog's sniffing capabilities. The list of potential threats is long, including nuclear, biological, chemical and radiological weapons, and each presents its own challenges. However, any effective system must meet the following requirements: (1) Sensor systems must be operationally practical. Delays must be kept to a minimum. The systems must be safe to operate. Individual privacy and corporate proprietary information must be protected. The systems must be part of a viable concept of operations; i.e., they must provide information that can enable effective, preemptive actions to be taken. (2) Sensors systems must be highly sensitive, providing a low probability of missed detections (false negatives). Our adversaries will conceal their device from detection, and they will likely probe our defenses for any weaknesses. Our systems must be robust against these techniques. (3) Sensor systems must give a low probability of false alarms (false positives). Our response to the detection of such a weapon will marshal substantial resources and, in many scenarios, be highly disruptive to the general population. Thus a system that gives frequent false alarms will soon be ignored.

Dye, D.H.

2002-03-05T23:59:59.000Z

442

Sensors & Measurement | More Science | ORNL  

NLE Websites -- All DOE Office Websites (Extended Search)

Sensors and Measurements Sensors and Measurements SHARE Sensors and Measurement Oak Ridge National Laboratory's (ORNL) capability in the research and development of sensor materials, sensors technologies, new instrumentation, and measurement systems is critical to its ability to translate breakthrough science into robust technologies, systems, and methods that address high-risk, high-complexity, multidisciplinary issues of national importance. This capability is manifested in a culture that effectively creates and manages complex systems by (1) developing detailed analytical processes to establish requirements, (2) analyzing candidate system architectures, (3) engineering in critical performance attributes, and (4) delivering measurement systems that operate as expected from the outset and

443

Wide Area and Distributed Hydrogen Sensors  

DOE Green Energy (OSTI)

Recent advances in optical sensors show promise for the development of new wide area monitoring and distributed optical network hydrogen detection systems. Optical hydrogen sensing technologies reviewed here are: 1) open path Raman scattering systems, 2) back scattering from chemically treated solid polymer matrix optical fiber sensor cladding; and 3) shlieren and shearing interferometry imaging. Ultrasonic sensors for hydrogen release detection are also reviewed. The development status of these technologies and their demonstrated results in sensor path length, low hydrogen concentration detection ability, and response times are described and compared to the corresponding status of hydrogen spot sensor network technologies.

Zalosh, Robert G.; Barilo, Nick F.

2009-09-18T23:59:59.000Z

444

Energy Systems Sensor Laboratory (Fact Sheet)  

DOE Green Energy (OSTI)

This fact sheet describes the purpose, lab specifications, applications scenarios, and information on how to partner with NREL's Energy Systems Sensor Laboratory at the Energy Systems Integration Facility. The mission of the Energy Systems Sensor Laboratory at NREL's Energy Systems Integration Facility (ESIF) is to research, develop, test, and evaluate the performance of commercial and developing hydrogen sensor technologies to support the needs of the emerging hydrogen infrastructure. Sensor performance metrics analogous to national and international standards are quantified. Information gained from the sensor testing is provided to the sensor manufacturers to aid in sensor development, to end users to guide sensor selection and deployment, and to committees to support the development of codes and standards. The laboratory also provides support to end-users, including assessment of technologies for applications, information on deployment. Some application scenarios are: (1) Testing and analyzing sensors are over a range of controlled and monitored environmental conditions; (2) Testing the impact of interferants and poisons; (3) Evaluating the life span of sensors with separate dedicated life test fixtures; and (4) Testing of hydrogen sensors for process applications, including responses under high hydrogen concentrations.

Not Available

2011-10-01T23:59:59.000Z

445

Sensors & Controls | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Sensors & Controls Sensors & Controls Sensors & Controls The Emerging Technologies team conducts research into technologies related to building sensors and controls. They work with building systems-such as a heating, ventilation, and air conditioning (HVAC) systems-to analyze energy use and help occupants manage energy costs. Building controls have the potential to reduce building energy consumption by monitoring variables and other inputs, and then automatically responding in a predetermined fashion. Research between the Department of Energy, industry, and laboratories focuses on: Sensors Photo of a ceiling-mounted fire sprinkler. Sensors are designed to help building owners and operators better manage their energy use through automation. Sensors measure predefined variables, such as the amount of

446

An aerial radiological survey of the Oyster Creek Nuclear Power Plant and surrounding area, Forked River, New Jersey. Date of survey: September 18--25, 1992  

SciTech Connect

An aerial radiological survey was conducted over the Oyster Creek Nuclear Power Plant in Forked River, New Jersey, during the period September 18 through September 24, 1992. The survey was conducted at an altitude of 150 feet (46 meters) over a 26-square-mile (67-square-kilometer) area centered on the power station. The purpose of the survey was to document the terrestrial gamma radiation environment of the Oyster Creek Nuclear Power plant and surrounding area. The results of the aerial survey are reported as inferred gamma radiation exposure rates at 1 meter above ground level in the form of a contour map. Outside the plant boundary, exposure rates were found to vary between 4 and 10 microroentgens per hour and were attributed to naturally-occurring uranium, thorium, and radioactive potassium gamma emitters. The aerial data were compared to ground-based benchmark exposure rate measurements and radionuclide assays of soil samples obtained within the survey boundary. The ground-based measurements were found to be in good agreement with those inferred from the aerial measuring system. A previous survey of the power plant was conducted in August 1969 during its initial startup phase. Exposure rates and radioactive isotopes revealed in both surveys were consistent and within normal terrestrial background levels.

Hopkins, H.A.; McCall, K.A.

1994-05-01T23:59:59.000Z

447

Analysis of Tornado-Induced Tree Fall Using Aerial Photography from the Joplin, Missouri, and Tuscaloosa–Birmingham, Alabama, Tornadoes of 2011  

Science Conference Proceedings (OSTI)

In this study, aerial imagery of tornado damage is used to digitize the falling direction of trees (i.e., tree fall) along the 22 May 2011 Joplin, Missouri, and 27 April 2011 Tuscaloosa–Birmingham, Alabama, tornado tracks. Normalized mean patterns ...

Christopher D. Karstens; William A. Gallus Jr.; Bruce D. Lee; Catherine A. Finley

2013-05-01T23:59:59.000Z

448

Interface between land and water,shoreline change analyses for erosion/accretion,hazards,planning Derived from coastal survey maps,nautical charts,aerial photos,LIDAR  

E-Print Network (OSTI)

/accretion,hazards,planning Derived from coastal survey maps,nautical charts,aerial photos,LIDAR Linear features Can be animated survey maps/charts,legal definitions,clipping/masking;various measuring devices Linear and polygonal:10,000 to 1:24,000;locational accuracy ~10-50 m Point and line symbology annotated with species type Survey

Wright, Dawn Jeannine

449

Buried fiber optic intrusion sensor  

E-Print Network (OSTI)

A distributed fiber optic intrusion sensor capable of detecting intruders from the pressure of their weight on the earth's surface was investigated in the laboratory and in field tests. The presence of an intruder above or in proximity to the buried sensor induces a phase shift in light propagating along the fiber which allows for the detection and localization of intrusions. Through the use of an ultra-stable erbium-doped fiber laser and phase sensitive optical time domain reflectometry, disturbances were monitored in long (several km) lengths of optical fiber. Narrow linewidth and low frequency drift in the laser were achieved through a combination of optical feedback and insulation of the laser cavity against environmental effects. The frequency drift of the laser, characterized using an all-fiber Mach Zehnder interferometer, was found to be less than 1 MHz/min, as required for operation of the intrusion detection system. Intrusions were simulated in a laboratory setting using a piezoelectric transducer to produce a controllable optical phase shift at the 2 km point of a 12 km path length. Interrogation of the distributed sensor was accomplished by repetitively gating light pulses from the stable laser into the sensing fiber. By monitoring the Rayleigh backscattered light with a photodetector and comparing traces with and without an induced phase shift, the phase disturbances were detected and located. Once the feasibility of such a sensor was proven in the laboratory, the experimental set up was transferred to Texas A&M's Riverside Campus. At the test site, approximately 40 meters of fiber optic cable were buried in a triangle perimeter and then spliced into the 12 km path length which was housed inside the test facility. Field tests were conducted producing results comparable to those found in the laboratory. Intrusions over this buried fiber were detectable on the ?-OTDR trace and could be localized to the intrusion point. This type of sensor has the potential benefits of heightened sensitivity, covertness, and greatly reduced cost over the conventional seismic, acoustic, infrared, magnetic, and fiber optic sensors for monitoring long (multi-km) perimeters.

Maier, Eric William

2005-05-01T23:59:59.000Z

450

A Laser Interferometric Miniature Sensor  

SciTech Connect

This is the second year of a Phase II Small Business Innovation Research (SBIR) contract geared towards the development of a new seismic sensor. Ground-based seismic monitoring systems have proven to be very capable in identifying nuclear tests, and can provide somewhat precise information on the location and yield of the explosive device. Making these measurements, however, currently requires very expensive and bulky seismometers that are difficult to deploy in places where they are most needed. A high performance, compact device can enable rapid deployment of large scale arrays, which can in turn be used to provide higher quality data during times of critical need. The use of a laser interferometer-based device has shown considerable promise, while also presenting significant challenges. The greatest strength of this optical readout technique is the ability to decouple the mechanical design from the transducer, thus enabling a miniaturized design that is not accessible with conventional sensing techniques. However, the nonlinearity in the optical response must be accounted for in the sensor output. Previously, we had proposed using a force-feedback approach to position the sensor at a point of maximum linearity. However, it can be shown that the combined nonlinearities of the optical response and the force-feedback curve necessarily results in a significant amount of unwanted noise at low frequencies. Having realized this, we have developed a new approach that eliminates force feedback, allowing the proof mass to move freely at all times. This takes advantage of some advanced optical spatial filtering that was developed at Symphony Acoustics for other types of sensors, and was recently adapted to this work. After processing the signals in real time, the digital output of the device is intrinsically linear, and the sensor can operate at any orientation with the same level of resolution, while instantly adapting to significant changes in orientation. Ultimately, we expect the dynamic range to be up to 180 dB. Currently, we have observed the noise floor in a 0.1 Hz to 10 Hz bandwidth to be near -160 dB/Hz relative to 1 m2/s4. To meet the objectives of this program, we are finalizing the design of a 3 axis sensor for shallow borehole deployments, with a diameter of 40 mm and a length a 150 mm.

Carr, Dustin W., PhD.; Baldwin, Patrick C.; Milburn, Howard; Robinson, David

2011-09-12T23:59:59.000Z

451

Optical sensors and multisensor arrays containing thin film electroluminescent devices  

DOE Patents (OSTI)

Optical sensor, probe and array devices for detecting chemical biological, and physical analytes. The devices include an analyte-sensitive layer optically coupled to a thin film electroluminescent layer which activates the analyte-sensitive layer to provide an optical response. The optical response varies depending upon the presence of an analyte and is detected by a photodetector and analyzed to determine the properties of the analyte.

Aylott, Jonathan W. (Ann Arbor, MI); Chen-Esterlit, Zoe (Ann Arbor, MI); Friedl, Jon H. (Ames, IA); Kopelman, Raoul (Ann Arbor, MI); Savvateev, Vadim N. (Ames, IA); Shinar, Joseph (Ames, IA)

2001-12-18T23:59:59.000Z

452

Advanced exterior sensor project : final report, September 2004.  

SciTech Connect

This report (1) summarizes the overall design of the Advanced Exterior Sensor (AES) system to include detailed descriptions of system components, (2) describes the work accomplished throughout FY04 to evaluate the current health of the original prototype and to return it to operation, (3) describes the status of the AES and the AES project as of September 2004, and (4) details activities planned to complete modernization of the system to include development and testing of the second-generation AES prototype.

Ashby, M. Rodema

2004-12-01T23:59:59.000Z

453

Sensor for measuring the atomic fraction in highly dissociated hydrogen  

DOE Green Energy (OSTI)

Atomic hydrogen is a very important constituent for processes ranging from cleaning oxide from GaAs and annealing amorphous silicon to the deposition of diamond. Because the usual techniques for measuring atomic fraction are either expensive and cumbersome to use, or unsuitable for application to highly dissociated hydrogen, a specially designed sensor was developed. Sensor design is based on a diffusion tube with noncatalytic walls, having one end open to the atom source and a catalytic closure at the other end. The sensor is simple and inexpensive to fabricate, and determining atom density is straightforward. Sensor design also inhibits thermal runaway, which occurs when atom density is high enough to impart enough recombination energy to the non-catalytic surface to substantially raise its temperature. While recombination coefficients for such surfaces are very low near room temperature, they increase nearly exponentially with temperature unless actively cooled. With the use of a straightforward calibration scheme to determine the variation in species fraction along the diffusion tube, the atomic fraction at the tube opening is determined. Design strategy, implementation considerations, and calibration method are presented. In addition, data obtained from an atomic hydrogen source are compared to relevant published data.

Gardner, W.L.

1994-12-31T23:59:59.000Z

454

Development of Sensors and Sensing Technology for Hydrogen Fuel Cell Vehicle Applications  

DOE Green Energy (OSTI)

One related area of hydrogen fuel cell vehicle (FCV) development that cannot be overlooked is the anticipated requirement for new sensors for both the monitoring and control of the fuel cell's systems and for those devices that will be required for safety. Present day automobiles have dozens of sensors on-board including those for IC engine management/control, sensors for state-of-health monitoring/control of emissions systems, sensors for control of active safety systems, sensors for triggering passive safety systems, and sensors for more mundane tasks such as fluids level monitoring to name the more obvious. The number of sensors continues to grow every few years as a result of safety mandates but also in response to consumer demands for new conveniences and safety features. Some of these devices (e.g. yaw sensors for dynamic stability control systems or tire presure warning RF-based devices) may be used on fuel cell vehicles without any modification. However the use of hydrogen as a fuel will dictate the development of completely new technologies for such requirements as the detection of hydrogen leaks, sensors and systems to continuously monitor hydrogen fuel purity and protect the fuel cell stack from poisoning, and for the important, yet often taken for granted, tasks such as determining the state of charge of the hydrogen fuel storage and delivery system. Two such sensors that rely on different transduction mechanisms will be highlighted in this presentation. The first is an electrochemical device for monitoring hydrogen levels in air. The other technology covered in this work, is an acoustic-based approach to determine the state of charge of a hydride storage system.

Brosha, E L; Sekhar, P K; Mukundan, R; Williamson, T; Garzon, F H; Woo, L Y; Glass, R R

2010-01-06T23:59:59.000Z

455

CargoNet: a low-cost micropower sensor node exploiting quasi-passive wakeup for adaptive asychronous monitoring of exceptional events  

Science Conference Proceedings (OSTI)

This paper describes CargoNet, a system of low-cost, micropower active sensor tags that seeks to bridge the current gap between wireless sensor networks and radio-frequency identification (RFID). CargoNet was aimed at applications in environmental monitoring ... Keywords: active RFID, micropower sensing, power management

Mateusz Malinowski; Matthew Moskwa; Mark Feldmeier; Mathew Laibowitz; Joseph A. Paradiso

2007-11-01T23:59:59.000Z

456

Fast track article: Disaggregated water sensing from a single, pressure-based sensor: An extended analysis of HydroSense using staged experiments  

Science Conference Proceedings (OSTI)

We present an extended analysis of our previous work on the HydroSense technology, which is a low-cost and easily installed single-point sensor of pressure for automatically disaggregating water usage activities in the home (Froehlich et al., 2009 [53]). ... Keywords: Activity sensing, H1.2, H5.2, Infrastructure-mediated sensing, Sensors, Water usage

Eric Larson; Jon Froehlich; Tim Campbell; Conor Haggerty; Les Atlas; James Fogarty; Shwetak N. Patel

2012-02-01T23:59:59.000Z

457

Fiber-optic voltage sensor  

DOE Patents (OSTI)

A fiber optic voltage sensor is described which includes a source of light, a reference fiber for receiving a known percentage of the light and an electrostrictive element having terminals across which is applied, a voltage to be measured. The electrostrictive element is responsive to the applied voltage to assume an altered physical state. A measuring fiber also receives a known percentage of light from the light source and is secured about the electrostrictive element. The measuring fiber is provided with a cladding and exhibits an evanescent wave in the cladding. The measuring fiber has a known length which is altered when the electrostrictive element assumes its altered physical state. A differential sensor is provided which senses the intensity of light in both the reference fiber and the measuring fiber and provides an output indicative of the difference between the intensities.

Wood, C.B.

1990-12-31T23:59:59.000Z

458

Six degree of freedom sensor  

DOE Patents (OSTI)

This small, non-contact optical sensor increases the capability and flexibility of computer controlled machines by detecting its relative position to a workpiece in all six degrees of freedom (DOF). At a fraction of the cost, it is over 200 times faster and up to 25 times more accurate than competing 3-DOF sensors. Applications range from flexible manufacturing to a 6-DOF mouse for computers. Until now, highly agile and accurate machines have been limited by their inability to adjust to changes in their tasks. By enabling them to sense all six degrees of position, these machines can now adapt to new and complicated tasks without human intervention or delay--simplifying production, reducing costs, and enhancing the value and capability of flexible manufacturing.

Vann, Charles S. (Fremont, CA)

1999-01-01T23:59:59.000Z

459

Six degree of freedom sensor  

DOE Patents (OSTI)

This small, non-contact optical sensor increases the capability and flexibility of computer controlled machines by detecting its relative position to a workpiece in all six degrees of freedom (DOF). At a fraction of the cost, it is over 200 times faster and up to 25 times more accurate than competing 3-DOF sensors. Applications range from flexible manufacturing to a 6-DOF mouse for computers. Until now, highly agile and accurate machines have been limited by their inability to adjust to changes in their tasks. By enabling them to sense all six degrees of position, these machines can now adapt to new and complicated tasks without human intervention or delay--simplifying production, reducing costs, and enhancing the value and capability of flexible manufacturing. 3 figs.

Vann, C.S.

1999-03-16T23:59:59.000Z

460

Capacitively-coupled inductive sensor  

DOE Patents (OSTI)

It is therefore an object of the present invention to provide a capacitively-coupled inductive shunt current sensor. To achieve the other object, and in accordance with the purpose of the present invention, as embodied and broadly described herein, the apparatus of this invention may comprise a capacitively coupled inductive shunt current sensor comprising: annular inductive channel means formed in a conductor carrying a high voltage pulsed current; an electrode capacitively coupled to said conductor on opposite sides of said annular inductive channel means; voltage dividing capacitor means connected in series with said electrode for reducing the magnitude of the detected output signal; output coupling means connected to said voltage dividing capacitor means for producing an output signal representative of said high voltage pulsed current.

Ekdahl, C.A.

1981-04-13T23:59:59.000Z

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Fiber-optic voltage sensor  

DOE Patents (OSTI)

A fiber optic voltage sensor is described which includes a source of light, a reference fiber for receiving a known percentage of the light and an electrostrictive element having terminals across which is applied, a voltage to be measured. The electrostrictive element is responsive to the applied voltage to assume an altered physical state. A measuring fiber also receives a known percentage of light from the light source and is secured about the electrostrictive element. The measuring fiber is provided with a cladding and exhibits an evanescent wave in the cladding. The measuring fiber has a known length which is altered when the electrostrictive element assumes its altered physical state. A differential sensor is provided which senses the intensity of light in both the reference fiber and the measuring fiber and provides an output indicative of the difference between the intensities.

Wood, C.B.

1990-01-01T23:59:59.000Z

462

Improved Humidity Profiling by Combining Passive and Active Remote...  

NLE Websites -- All DOE Office Websites (Extended Search)

Science Team Meeting Proceedings, Albuquerque, New Mexico, March 22-26, 2004 Improved Humidity Profiling by Combining Passive and Active Remote Sensors at the Southern Great Plains...

463

Selective chemical detection by energy modulation of sensors  

DOE Patents (OSTI)

A portable instrument for use in the field in detecting, identifying, and quantifying a component of a sampled fluid includes a sensor which chemically reacts with the component of interest or a derivative thereof, an electrical heating filament for heating the sample before it is applied to the sensor, and modulator for continuously varying the temperature of the filament (and hence the reaction rate) between two values sufficient to produce the chemical reaction. In response to this thermal modulation, the sensor produces a modulated output signal, the modulation of which is a function of the activation energy of the chemical reaction, which activation energy is specific to the particular component of interest and its concentration. Microprocessor which compares the modulated output signal with standard responses for a plurality of components to identify and quantify the particular component of interest. In particular, the concentration of the component of interest is proportional to the amplitude of the modulated output signal, while the identifying activation output energy of the chemical interaction indicative of that component is proportional to a normalized parameter equal to the peak-to-peak amplitude divided by the height of the upper peaks above a base line signal level. 5 figures.

Stetter, J.R.; Otagawa, T.

1991-09-10T23:59:59.000Z

464

Feasibility study of long-life micro fuel cell power supply for sensor networks for space and terrestrial applications  

E-Print Network (OSTI)

Sensor networks used for activities like border security, search and rescue, planetary exploration, commonly operate in harsh environments for long durations, where human supervision is minimal. A major challenge confronting ...

Manyapu, Kavya Kamal

2010-01-01T23:59:59.000Z

465

Ammonia and ammonium hydroxide sensors for ammonia/water absorption machines: Literature review and data compilation  

SciTech Connect

This report describes an evaluation of various sensing techniques for determining the ammonia concentration in the working fluid of ammonia/water absorption cycle systems. The purpose of this work was to determine if any existing sensor technology or instrumentation could provide an accurate, reliable, and cost-effective continuous measure of ammonia concentration in water. The resulting information will be used for design optimization and cycle control in an ammonia-absorption heat pump. PNL researchers evaluated each sensing technology against a set of general requirements characterizing the potential operating conditions within the absorption cycle. The criteria included the physical constraints for in situ operation, sensor characteristics, and sensor application. PNL performed an extensive literature search, which uncovered several promising sensing technologies that might be applicable to this problem. Sixty-two references were investigated, and 33 commercial vendors were identified as having ammonia sensors. The technologies for ammonia sensing are acoustic wave, refractive index, electrode, thermal, ion-selective field-effect transistor (ISFET), electrical conductivity, pH/colormetric, and optical absorption. Based on information acquired in the literature search, PNL recommends that follow-on activities focus on ISFET devices and a fiber optic evanescent sensor with a colormetric indicator. The ISFET and fiber optic evanescent sensor are inherently microminiature and capable of in situ measurements. Further, both techniques have been demonstrated selective to the ammonium ion (NH{sub 4}{sup +}). The primary issue remaining is how to make the sensors sufficiently corrosion-resistant to be useful in practice.

Anheier, N.C. Jr.; McDonald, C.E.; Cuta, J.M.; Cuta, F.M.; Olsen, K.B.

1995-05-01T23:59:59.000Z

466

Physical and chemical sensor technologies developed at Lawrence Livermore National Laboratory  

Science Conference Proceedings (OSTI)

The increasing emphasis on envirorunental issues, waste reduction, and improved efficiency for industrial processes has mandated the development of new chemical and physical sensors for field or in-plant use. The Lawrence Livermore National Laboratory (LLNL) has developed a number of technologies for sensing physical and chemical properties. Table 1 gives some examples of several sensors. that have been developed recently for environmental, industrial, commercial or government applications. Physical sensors of pressure, temperature, acceleration, acoustic vibration spectra, and ionizing radiation have been developed. Sensors developed at LLNL for chemical species include inorganic solvents, heavy metal ions`, and gaseous atoms and compounds. Primary sensing technologies we have employed have been based on optical fibers, semiconductor optical or radiation detectors, electrochemical activity, micromachined electromechanical (MEMs) structures, or chemical separation technologies. The complexities of these sensor systems range from single detectors to more advanced micro-instruments on-a-chip. For many of the sensors we have developed the necessary intelligent electronic support systems for both local and remote sensing applications. Each of these sensor technologies are briefly described in the remaining sections of this paper.

Balch, J.W.; Ciarlo, D.; Folta, J.; Glass, R.; Hagans, K.; Milanovich, F.; Sheem, S.

1993-08-10T23:59:59.000Z

467

Thin Silicon MEMS Contact-Stress Sensor  

SciTech Connect

This thin, MEMS contact-stress (CS) sensor continuously and accurately measures time-varying, solid interface loads in embedded systems over tens of thousands of load cycles. Unlike all other interface load sensors, the CS sensor is extremely thin (< 150 {micro}m), provides accurate, high-speed measurements, and exhibits good stability over time with no loss of calibration with load cycling. The silicon CS sensor, 5 mm{sup 2} and 65 {micro}m thick, has piezoresistive traces doped within a load-sensitive diaphragm. The novel package utilizes several layers of flexible polyimide to mechanically and electrically isolate the sensor from the environment, transmit normal applied loads to the diaphragm, and maintain uniform thickness. The CS sensors have a highly linear output in the load range tested (0-2.4 MPa) with an average accuracy of {+-} 1.5%.

Kotovsky, J; Tooker, A; Horsley, D

2010-03-22T23:59:59.000Z

468

Energy harvesting sensor nodes: Survey and implications  

E-Print Network (OSTI)

Sensor networks with battery-powered nodes can seldom simultaneously meet the design goals of lifetime, cost, sensing reliability and sensing and transmission coverage. Energy-harvesting, converting ambient energy to electrical energy, has emerged as an alternative to power sensor nodes. By exploiting recharge opportunities and tuning performance parameters based on current and expected energy levels, energy harvesting sensor nodes have the potential to address the conflicting design goals of lifetime and performance. This paper surveys various aspects of energy harvesting sensor systems — architecture, energy sources and storage technologies and examples of harvesting-based nodes and applications. The study also discusses the implications of recharge opportunities on sensor node operation and design of sensor network solutions. 1

Sujesha Sudevalayam; Purushottam Kulkarni

2008-01-01T23:59:59.000Z

469

Distributed sensor networks with collective computation  

Science Conference Proceedings (OSTI)

Simulations of a network of N sensors have been performed. The simulation space contains a number of sound sources and a large number of sensors. Each sensor is equipped with an omni-directional microphone and is capable of measuring only the time of arrival of a signal. Sensors are able to wirelessly transmit and receive packets of information, and have some computing power. The sensors were programmed to merge all information (received packets as well as local measurements) into a 'world view' for that node. This world view is then transmitted. In this way, information can slowly diffuse across the network. One node was monitored in the network as a proxy for when information had diffused across the network. Simulations demonstrated that the energy expended per sensor per time step was approximately independent of N.

Lanman, D. R. (Douglas R.)

2001-01-01T23:59:59.000Z

470

ANL Activities  

NLE Websites -- All DOE Office Websites (Extended Search)

Activities of the DOD Activities of the DOD Project Office focus today on the Navy's Free Electron Laser Program Argonne Accelerator Institute Meeting June 16, 2009 2 Several Beam Activities and Interests Ongoing  Terahertz sources and applications  Navy Free Electron Laser (Focus area today)  Free Electron Laser Applications  Electromagnetic Interference Technology Review Committees  Novel Fiber Optic Materials with Army Research Lab  Optical Diagnostics for next-generation light sources  Neutron detection schemes  NATO Sensors and Electronics Panel, international field tests of directed energy source applications  Controls  Radiation Oncology 3 Background, Naval Directed Energy History The U.S Navy has been investigating utility of lasers since the 1960's and the

471

HYDROCARBON AND SULFUR SENSORS FOR SOFC SYSTEMS  

DOE Green Energy (OSTI)

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.

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

2003-11-01T23:59:59.000Z

472

Low-Cost Fiber Optic Pressure Sensor  

DOE Patents (OSTI)

The size and cost of fabricating fiber optic pressure sensors is reduced by fabricating the membrane of the sensor in a non-planar shape. The design of the sensors may be made in such a way that the non-planar membrane becomes a part of an air-tight cavity, so as to make the membrane resilient due to the air-cushion effect of the air-tight cavity. Such non-planar membranes are easier to make and attach.

Sheem, Sang K. (Pleasanton, CA)

2004-05-18T23:59:59.000Z

473

Low-Cost Fiber Optic Pressure Sensor  

DOE Patents (OSTI)

The size and cost of fabricating fiber optic pressure sensors is reduced by fabricating the membrane of the sensor in a non-planar shape. The design of the sensors may be made in such a way that the non-planar membrane becomes a part of an air-tight cavity, so as to make the membrane resilient due to the air-cushion effect of the air-tight cavity. Such non-planar membranes are easier to make and attach.

Sheem, Sang K. (Pleasanton, CA)

2003-07-22T23:59:59.000Z

474

Hanford Site lighting occupancy sensor study  

SciTech Connect

This study was designed to assess the potential energy savings from the use of lighting occupancy sensor control in the US Department of Energy (DOE) Hanford Site office facilities. The final results of the study provide useful information for assessing cost-effective use of occupancy sensor lighting control. The results also include specific application data for Hanford Site office building spaces that indicate where sensor technology could be applied for cost-effective energy savings.

Richman, E.E.; Dittmer, A.L.; Keller, J.M.

1993-09-01T23:59:59.000Z

475

Carbon nanotube temperature and pressure sensors  

Science Conference Proceedings (OSTI)

The present invention, in one embodiment, provides a method of measuring pressure or temperature using a sensor including a sensor element composed of a plurality of carbon nanotubes. In one example, the resistance of the plurality of carbon nanotubes is measured in response to the application of temperature or pressure. The changes in resistance are then recorded and correlated to temperature or pressure. In one embodiment, the present invention provides for independent measurement of pressure or temperature using the sensors disclosed herein.

Ivanov, Ilia N; Geohegan, David Bruce

2013-10-29T23:59:59.000Z

476

Guide of Sensor Technology Application Practices  

Science Conference Proceedings (OSTI)

This technical update provides guidance on the deployment of sensors on the electric distribution system. Sensors are defined as devices, embedded in distribution equipment or standing alone, which measure parameters such as voltage, current or temperature, and report those measurements back to the electric utility through some form of communications. These sensors support a wide range of applications intended to improve reliability, manage assets, detect/prevent failures, or support operations. ...

2012-12-13T23:59:59.000Z

477

Sensor Development for PEM Fuel Cell Systems  

DOE Green Energy (OSTI)

This document reports on the work done by Honeywell Sensing and Control to investigate the feasibility of modifying low cost Commercial Sensors for use inside a PEM Fuel Cell environment. Both stationary and automotive systems were considered. The target environment is hotter (100 C) than the typical commercial sensor maximum of 70 C. It is also far more humid (100% RH condensing) than the more typical 95% RH non-condensing at 40 C (4% RH maximum at 100 C). The work focused on four types of sensors, Temperature, Pressure, Air Flow and Relative Humidity. Initial design goals were established using a market research technique called Market Driven Product Definition (MDPD). A series of interviews were conducted with various users and system designers in their facilities. The interviewing team was trained in data taking and analysis per the MDPD process. The final result was a prioritized and weighted list of both requirements and desires for each sensor. Work proceeded on concept development for the 4 types of sensors. At the same time, users were developing the actual fuel cell systems and gaining knowledge and experience in the use of sensors and controls systems. This resulted in changes to requirements and desires that were not anticipated during the MDPD process. The concepts developed met all the predicted requirements. At the completion of concept development for the Pressure Sensor, it was determined that the Fuel Cell developers were happy with off-the-shelf automotive pressure sensors. Thus, there was no incentive to bring a new Fuel Cell Specific Pressure Sensor into production. Work was therefore suspended. After the experience with the Pressure Sensor, the requirements for a Temperature Sensor were reviewed and a similar situation applied. Commercially available temperature sensors were adequate and cost effective and so the program was not continued from the Concept into the Design Phase.

Steve Magee; Richard Gehman

2005-07-12T23:59:59.000Z

478

Body sensor network security: an identity-based cryptography approach  

Science Conference Proceedings (OSTI)

A body sensor network (BSN), is a network of sensors deployed on a person's body, usually for health care monitoring. Since the sensors collect personal medical data, security and privacy are important components in a body sensor network. At the same ... Keywords: body sensor networks, identity-based cryptography, security

Chiu C. Tan; Haodong Wang; Sheng Zhong; Qun Li

2008-03-01T23:59:59.000Z

479

Advanced Sensors and Instrumentation | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Sensors and Instrumentation Sensors and Instrumentation Advanced Sensors and Instrumentation The ASI subprogram plans to develop the scientific basis for sensors and supporting infrastructure technology that will address crosscutting technology gaps relating to measurements at existing and advanced nuclear power plants as well as within their fuel cycles. The focus of the program is on the following technical challenges and objectives: Identify needed physical measurement accuracy of nuclear system process parameters and minimize uncertainty. Identify and conduct research into monitoring and control technologies, including human factors, to achieve control of new nuclear energy processes, and new methodologies for monitoring to achieve high reliability and availability. Integrate control of multiple processes, potential reductions in

480

Sensors & Measurement | Clean Energy | ORNL  

NLE Websites -- All DOE Office Websites (Extended Search)

Electrical and Electronics Systems Research Sustainable Electricity Systems Biology Transportation Clean Energy Home | Science & Discovery | Clean Energy | Research Areas | Sensors & Measurement SHARE Sensors & Measurement Oak Ridge National Laboratory's (ORNL) capability in the research and development of sensor materials, sensors technologies, new instrumentation, and measurement systems is critical to its ability to translate breakthrough science into robust technologies, systems, and methods that address high-risk, high-complexity, multidisciplinary issues of national importance. This capability is manifested in a culture that effectively creates and manages complex systems by (1) developing detailed analytical processes to establish requirements, (2) analyzing candidate system

Note: This page contains sample records for the topic "active sensors aerial" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Wireless Sensors Improve Data Center Efficiency  

NLE Websites -- All DOE Office Websites (Extended Search)

foot, increase, energy savings for cooling can be realized by applying wireless sensor network (WSN) technology and using the gathered information to efficiently manage the data...

482

Polyaniline Nanothin Film Chemiresistive Gas Sensors  

E-Print Network (OSTI)

of formaldehyde, carbon dioxide, ozone and nerve agent sarin4: A MINIATURIZED CARBON DIOXIDE CHEMIRESISTIVE SENSOR USINGdioxide, formaldehyde, carbon dioxide, ozone and nerve

Srinives, Sira

2012-01-01T23:59:59.000Z

483