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Note: This page contains sample records for the topic "monitoring sensor network" 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.


1

a Wireless Sensor Network for Environmental Monitoring  

E-Print Network [OSTI]

transmitters #12;Sample sensors: #12;Sample sensors: PAR: Photosynthetically Active (solar) Radiation sensora Wireless Sensor Network for Environmental Monitoring a Wireless Sensor Network for Environmental technology: a truly self configurable, low-cost, maintenance-free, ad-hoc sensor network (not based on Zig

Gburzynski, Pawel

2

Monitoring Energy Consumption In Wireless Sensor Networks  

E-Print Network [OSTI]

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

Turau, Volker

3

Integration of wireless sensor networks in environmental monitoring cyber infrastructure  

E-Print Network [OSTI]

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

Huang, Yan

4

Invited Paper: Wireless Sensor Networks for Ecosystem Monitoring & Port Surveillance  

E-Print Network [OSTI]

Invited Paper: Wireless Sensor Networks for Ecosystem Monitoring & Port Surveillance A. Mansour*1 of the most up-to-date innovations in sensor technology and sensor networks, our current project should as well as the second phase of the project which consists in analyzing living underwater micro

Paris-Sud XI, Université de

5

Wireless Sensor Network for Monitoring of Historic Structures under Rehabilitation  

E-Print Network [OSTI]

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

Samuels, Julie Marie

2012-02-14T23:59:59.000Z

6

Wireless sensor networks and environmental monitoring applications  

E-Print Network [OSTI]

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

Le Borgne, Yann-AĂ«l

7

A Wireless Sensor Network Air Pollution Monitoring System  

E-Print Network [OSTI]

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

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

2010-01-01T23:59:59.000Z

8

Underground Coal Mine Monitoring with Wireless Sensor Networks  

E-Print Network [OSTI]

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

Liu, Yunhao

9

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

E-Print Network [OSTI]

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

Upadhyay, Rochan

2007-10-02T23:59:59.000Z

10

Wireless Sensor Networks for Structural Health Monitoring by Sukun Kim  

E-Print Network [OSTI]

Wireless Sensor Networks (WSN). The project is targeting a deployment on the Golden Gate Bridge. Ambient

California at Berkeley, University of

11

Wireless Sensor Network for Electric Transmission Line Monitoring  

SciTech Connect (OSTI)

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

Alphenaar, Bruce

2009-06-30T23:59:59.000Z

12

Mobile sensor network to monitor wastewater collection pipelines  

E-Print Network [OSTI]

17 Mobile robot localization in23 WCS monitoring using mobile floatingDesign of mobile pipeline floating sensor “SewerSnort

Lim, Jungsoo

2012-01-01T23:59:59.000Z

13

activity monitoring sensor: Topics by E-print Network  

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

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

14

Contour maps: Monitoring and diagnosis in sensor networks  

E-Print Network [OSTI]

Contour Maps: Monitoring and Diagnosis in Sensor Networksof data – contour maps, which trade off accuracy with thealgorithms to build contour maps: distributed spatial and

Meng, Xiaoqiao Q; Nandagopal, T; Li, L; Lu, S W

2006-01-01T23:59:59.000Z

15

A framework for use of wireless sensor networks in forest fire detection and monitoring  

E-Print Network [OSTI]

consuming energy efficiently. Ă? 2012 Elsevier Ltd. All rights reserved. 1. Introduction Forest firesA framework for use of wireless sensor networks in forest fire detection and monitoring Yunus Emre sensor networks Forest fire detection Environmental monitoring a b s t r a c t Forest fires are one

Ulusoy, Ă?zgĂĽr

16

Development of software architecture for environmental monitoring using wireless sensor networks  

E-Print Network [OSTI]

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

Hari, Piyush

2006-01-01T23:59:59.000Z

17

Sensor Networks for Monitoring and Control of Water Distribution Systems  

E-Print Network [OSTI]

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

Whittle, Andrew

18

Energy Harvesting for Structural Health Monitoring Sensor Networks  

SciTech Connect (OSTI)

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

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

2007-02-26T23:59:59.000Z

19

GeM-REM: Generative Model-driven Resource efficient ECG Monitoring in Body Sensor Networks  

E-Print Network [OSTI]

GeM-REM: Generative Model-driven Resource efficient ECG Monitoring in Body Sensor Networks Sidharth electrocardiogram (ECG) monitoring. In such systems, sampling the ECG at clinically recommended rates (250 Hz, there is a need for reducing the energy consumption and data size at the sensor, while maintaining the ECG quality

Poovendran, Radha

20

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

SciTech Connect (OSTI)

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

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

2011-07-06T23:59:59.000Z

Note: This page contains sample records for the topic "monitoring sensor network" 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

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

22

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

SciTech Connect (OSTI)

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

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

2012-12-31T23:59:59.000Z

23

The development of a robust, autonomous sensor network platform for environmental monitoring.  

E-Print Network [OSTI]

The development of a robust, autonomous sensor network platform for environmental monitoring. L of environmental impact on a coastal sea bed of a wind farm. Wind farms are seen as a key feature negative, environmental impacts. The complex interplay between the: oceans currents; wind; coast line

Marshall, Ian W.

24

Structural Monitoring of Wind Turbines using Wireless Sensor Networks  

E-Print Network [OSTI]

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

Sweetman, Bert

25

Health Monitoring of Civil Infrastructures Using Wireless Sensor Networks  

E-Print Network [OSTI]

to the staff and management of Golden Gate Bridge District, in particular Dennis Mulligan and Jerry Kao Health Monitoring (SHM) is designed, implemented, deployed and tested on the Golden Gate Bridge (GGB with the operation of the bridge. Requirements that SHM imposes on WSN are identified and new solutions to meet

Glaser, Steven D.

26

Sensor networks represent new paradigm for reliable environment monitoring and infor-mation collection. They hold the promise of revolutionizing sensing in a wide range of  

E-Print Network [OSTI]

computing power, scarce memory and limited battery power. For wireless micro-sensor networks, physical of wireless micro-sensor networks communication models. 2. Development of a frame-work to evaluate protocolsAbstract Sensor networks represent new paradigm for reliable environment monitoring and infor

Heinzelman, Wendi

27

Monitoring Quality Maximization through Fair Rate Allocation in Harvesting Sensor Networks  

E-Print Network [OSTI]

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

Liang, Weifa

28

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

E-Print Network [OSTI]

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

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

2007-01-01T23:59:59.000Z

29

Low Cost Monitoring and Intruders Detection using Wireless Video Sensor Networks  

E-Print Network [OSTI]

a serious challenge to wireless video sensor networks of weak computation and battery power. In this paper the efficiency of our approach through theoretical analysis and demonstrate the benefits of our scheduling of low capacity (resolution, processing, and storage) of a same or similar type can be deployed

Paris-Sud XI, Université de

30

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

E-Print Network [OSTI]

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

Hu, Fei

31

Multi-Resolution Storage and Search in Sensor Networks  

E-Print Network [OSTI]

users of a micro-climate monitoring network [Hamilton 2004]Fig. 21. Micro-climate monitoring sensor network deploymentNetworks Table I. Data Requirement Estimates for Scienti?c Applications Application Building Health Monitoring [Kohler] Micro-

Ganesan, Deepak; Greenstein, Ben; Estrin, D; Heidemann, John; Govindan, Ramesh

2007-01-01T23:59:59.000Z

32

Implementing a wireless base station for a sensor network  

E-Print Network [OSTI]

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

Song, Heewon, 1977-

2004-01-01T23:59:59.000Z

33

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

E-Print Network [OSTI]

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

Xue, Xin

2009-01-01T23:59:59.000Z

34

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

E-Print Network [OSTI]

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

Chen, Min

35

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

E-Print Network [OSTI]

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

Zhou, Shengli

36

Challenges for Efficient Communication in Underwater Acoustic Sensor Networks  

E-Print Network [OSTI]

Challenges for Efficient Communication in Underwater Acoustic Sensor Networks Ian F. Akyildiz for oceano- graphic data collection, pollution monitoring, offshore explo- ration and tactical surveillance in collaborative monitoring missions. Underwater acoustic network- ing is the enabling technology

Pompili, Dario

37

air pollution monitoring: Topics by E-print Network  

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

16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 A Wireless Sensor Network Air Pollution Monitoring System CERN Preprints Summary: Sensor networks are currently an...

38

Issues in autonomous mobile sensor networks  

E-Print Network [OSTI]

moni- toring, surveillance, search and rescue, and emergency management [9]-[15]. For example, one application for mobile sensor networks is in offshore oil and gas ex- ploration and condition monitoring. It is envisaged that a team of autonomous... another example of a network would be the ?Dominator? UAV network being envisaged by the USAF for surveillance, monitor- ing and engagement of targets on a cluttered battlefield [16]. A human in the loop provides initial directives to a group of agents...

Dharne, Avinash Gopal

2009-05-15T23:59:59.000Z

39

Ultra-wideband radar sensors and networks  

DOE Patents [OSTI]

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

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

2013-08-06T23:59:59.000Z

40

Water Distribution System Monitoring and Decision Support Using a Wireless Sensor Network  

E-Print Network [OSTI]

Water distribution systems comprise labyrinthine networks of pipes, often in poor states of repair, that are buried beneath our city streets and relatively inaccessible. Engineers who manage these systems need reliable ...

Allen, Michael

Note: This page contains sample records for the topic "monitoring sensor network" 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

Modular sensor network node  

DOE Patents [OSTI]

A distributed wireless sensor network node is disclosed. The wireless sensor network node includes a plurality of sensor modules coupled to a system bus and configured to sense a parameter. The parameter may be an object, an event or any other parameter. The node collects data representative of the parameter. The node also includes a communication module coupled to the system bus and configured to allow the node to communicate with other nodes. The node also includes a processing module coupled to the system bus and adapted to receive the data from the sensor module and operable to analyze the data. The node also includes a power module connected to the system bus and operable to generate a regulated voltage.

Davis, Jesse Harper Zehring (Berkeley, CA); Stark, Jr., Douglas Paul (Tracy, CA); Kershaw, Christopher Patrick (Hayward, CA); Kyker, Ronald Dean (Livermore, CA)

2008-06-10T23:59:59.000Z

42

Network Embedded Systems Sensor Networks  

E-Print Network [OSTI]

Battery Energy Reserve Manager = Bank Each task requests an account with conditions W ­ fraction Tracking 9 #12;Virtual Battery: An Energy Reserve Abstraction for Embedded Sensor Networks Qing Cao of real battery allocated N ­ number of energy installments L ­ expected lifetime of the task C

Amir, Yair

43

Building Adaptable Sensor Networks with Sensor Cubes  

E-Print Network [OSTI]

of layers allows easy experiments, upgrades and extensions Small-scale sensor network Example sensor module- world network algorithm and power management behavior · Results from small scale tests can be compared (short packets and high bit rate reduce collision probability); Transmitter's MAC table logic: Small

Roussos, George

44

Short-range wireless sensor networks for high density seismic monitoring  

E-Print Network [OSTI]

for sub-surface diagnostic (for small earthquake monitoring) and exploration (for new oil and gas large areas to measure backscattered wave fields. A storage/processing unit (sink node) collects. Although a wide number of applications have been proposed for WSN [1], their market penetration and volumes

Spagnolini, Umberto

45

Reducing Uncertainty in Wireless Sensor Networks  

E-Print Network [OSTI]

network. OSDI '06. [4] O.V. K. Langendoen et. al. Murphy loves potatoes: Experiences from a pilot sensor Island [1] Redwood Tree (Wikipedia) Redwoods [2] Agriculture [4] Potato Field (Kevin Temple) Volcano, Memento2 ­ "Heisenbugs" ­ Waste of resources ­ Monitoring suffers from network problems, too. [1] N

46

Radionuclide Sensors for Water Monitoring  

SciTech Connect (OSTI)

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

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

2003-06-01T23:59:59.000Z

47

Radionuclide Sensors for Water Monitoring  

SciTech Connect (OSTI)

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

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

2004-06-29T23:59:59.000Z

48

Three-Dimensional Routing in Underwater Acoustic Sensor Networks  

E-Print Network [OSTI]

Three-Dimensional Routing in Underwater Acoustic Sensor Networks Dario Pompili and Tommaso Melodia applications in oceanographic data collection, pollution monitoring, offshore exploration, disaster prevention in a 3D underwa- ter acoustic sensor network is investigated at the network layer, by considering

Pompili, Dario

49

Ad Hoc and Sensor Networks Santosh Kumar and Lan Wang  

E-Print Network [OSTI]

Ad Hoc and Sensor Networks Santosh Kumar and Lan Wang Dept. of Computer Science The University. Such an infrastructureless network is called an Ad Hoc network; more specifically, "a network that is setup, literally communication, an Ad Hoc network may be used for other purposes such as monitoring the physical environment

Wang, Lan

50

Controlled mobility in sensor networks  

E-Print Network [OSTI]

K. Gupta. Optimizing energy-latency trade- o? in sensoras “Optimizing Energy-Latency Trade-o? in Sensor NetworksK. Gupta, “Optimizing Energy-Latency Trade-o? in Sensor

Sugihara, Ryo

2009-01-01T23:59:59.000Z

51

Radionuclide Sensors for Environmental Monitoring: From Flow...  

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

to Equilibration-Based Radionuclide Sensors for Environmental Monitoring: From Flow Injection Solid-Phase Absorptiometry to Equilibration-Based Abstract: The development...

52

Electrochemical NOx Sensors for Monitoring Diesel Emissions  

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

x Sensors for Monitoring Diesel Emissions This work performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract...

53

A network security monitor  

SciTech Connect (OSTI)

The study of security in computer networks is a rapidly growing area of interest because of the proliferation of networks and the paucity of security measures in most current networks. Since most networks consist of a collection of inter-connected local area networks (LANs), this paper concentrates on the security-related issues in a single broadcast LAN such as Ethernet. Specifically, we formalize various possible network attacks and outline methods of detecting them. Our basic strategy is to develop profiles of usage of network resources and then compare current usage patterns with the historical profile to determine possible security violations. Thus, our work is similar to the host-based intrusion-detection systems such as SRI's IDES. Different from such systems, however, is our use of a hierarchical model to refine the focus of the intrusion-detection mechanism. We also report on the development of our experimental LAN monitor currently under implementation. Several network attacks have been simulated and results on how the monitor has been able to detect these attacks are also analyzed. Initial results demonstrate that many network attacks are detectable with our monitor, although it can surely be defeated. Current work is focusing on the integration of network monitoring with host-based techniques. 20 refs., 2 figs.

Heberlein, L.T.; Dias, G.V.; Levitt, K.N.; Mukherjee, B.; Wood, J.; Wolber, D. (California Univ., Davis, CA (USA). Dept. of Electrical Engineering and Computer Science)

1989-11-01T23:59:59.000Z

54

Three-dimensional and two-dimensional deployment analysis for underwater acoustic sensor networks q  

E-Print Network [OSTI]

Three-dimensional and two-dimensional deployment analysis for underwater acoustic sensor networks q Accepted 23 July 2008 Available online 7 August 2008 Keywords: Underwater acoustic sensor networks data collection, pollution monitoring, offshore exploration, disaster prevention, assisted navigation

Pompili, Dario

55

An Energy-efficient Wireless Sensor Network for Precision Agriculture  

E-Print Network [OSTI]

of the application (periodic collection of sensor- data and energy efficiency). Soil monitoring application doesAn Energy-efficient Wireless Sensor Network for Precision Agriculture Herman Sahota Ratnesh Kumar layer is designed to save energy during the wake-up synchronization phase. The network layer is designed

Kumar, Ratnesh

56

Characterization monitoring & sensor technology crosscutting program  

SciTech Connect (OSTI)

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

NONE

1996-08-01T23:59:59.000Z

57

Passive Loss Inference in Wireless Sensor Networks Based on Network Coding  

E-Print Network [OSTI]

Passive Loss Inference in Wireless Sensor Networks Based on Network Coding Yunfeng Lin, Ben Liang, Baochun Li Department of Electrical and Computer Engineering University of Toronto {ylin, bli it desirable to monitor link loss rates in wireless sensor networks. In this paper, we study the loss inference

Li, Baochun

58

Collaborative Mobile Charging for Sensor Networks Sheng Zhang  

E-Print Network [OSTI]

sensor networks (WSNs) [1], such as structural health monitoring for the Golden Gate Bridge [2 in the deep ocean, on bridge surfaces, or in containers of hazardous materials. We recently observed two

Wu, Jie

59

Underwater acoustic sensor networks: research challenges Ian F. Akyildiz *, Dario Pompili, Tommaso Melodia  

E-Print Network [OSTI]

Underwater acoustic sensor networks: research challenges Ian F. Akyildiz *, Dario Pompili, Tommaso will find applications in oceanographic data collection, pollution monitoring, offshore exploration acoustic networking is the enabling technology for these applications. Underwater networks consist

Pompili, Dario

60

An Architecture for Ocean Bottom UnderWater Acoustic Sensor Networks (UWASN)  

E-Print Network [OSTI]

An Architecture for Ocean Bottom UnderWater Acoustic Sensor Networks (UWASN) Dario Pompili, Tommaso collection, pollution monitoring, offshore exploration, and tactical surveillance applications. To make Acoustic Networking (UWASN) is the en- abling technology for these applications [1]. Underwater Networks

Melodia, Tommaso

Note: This page contains sample records for the topic "monitoring sensor network" 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

Enabling Long-Lived Sensor Networks Through Solar Energy Harvesting  

E-Print Network [OSTI]

Long - Lived Sensor Networks through Solar Energy Harvestingsolar energy harvesting and storage device for sensor

Jason Hsu; Sadaf Zahedi; Jonathan Friedman; Aman Kansal; Vijay Raghunathan; Mani Srivastava

2005-01-01T23:59:59.000Z

62

High Performance Network Monitoring  

SciTech Connect (OSTI)

Network Monitoring requires a substantial use of data and error analysis to overcome issues with clusters. Zenoss and Splunk help to monitor system log messages that are reporting issues about the clusters to monitoring services. Infiniband infrastructure on a number of clusters upgraded to ibmon2. ibmon2 requires different filters to report errors to system administrators. Focus for this summer is to: (1) Implement ibmon2 filters on monitoring boxes to report system errors to system administrators using Zenoss and Splunk; (2) Modify and improve scripts for monitoring and administrative usage; (3) Learn more about networks including services and maintenance for high performance computing systems; and (4) Gain a life experience working with professionals under real world situations. Filters were created to account for clusters running ibmon2 v1.0.0-1 10 Filters currently implemented for ibmon2 using Python. Filters look for threshold of port counters. Over certain counts, filters report errors to on-call system administrators and modifies grid to show local host with issue.

Martinez, Jesse E [Los Alamos National Laboratory

2012-08-10T23:59:59.000Z

63

On the robustness of clustered sensor networks  

E-Print Network [OSTI]

or fault tolerance capability of a sensor system. The redundancy degree of sensors plays two important roles pertaining to the robustness of a sensor network. First, the redundancy degree provides proper parameter values for robust estimator; second, we can...

Cho, Jung Jin

2009-05-15T23:59:59.000Z

64

Feasibility of Underwater Sensor Networks for Lifetime Assessment of Offshore Civil Structures  

E-Print Network [OSTI]

Feasibility of Underwater Sensor Networks for Lifetime Assessment of Offshore Civil Structures is to investigate the feasibility of underwater sensor networks for offshore and deep-sea structural monitoring. In this paper, the network communication topology and in-network processing algorithm for two offshore wind

Zhou, Shengli

65

Underwater Data Collection Using Robotic Sensor Networks  

E-Print Network [OSTI]

We examine the problem of utilizing an autonomous underwater vehicle (AUV) to collect data from an underwater sensor network. The sensors in the network are equipped with acoustic modems that provide noisy, range-limited ...

Hollinger, Geoffrey A.

66

Sensor network localization based on natural phenomena  

E-Print Network [OSTI]

Autonomous localization is crucial for many sensor network applications. The goal of this thesis is to develop a distributed localization algorithm for the PLUG indoor sensor network by analyzing sound and light sensory ...

Kim, Daniel Sang

2006-01-01T23:59:59.000Z

67

Adaptive sampling in autonomous marine sensor networks  

E-Print Network [OSTI]

In this thesis, an innovative architecture for real-time adaptive and cooperative control of autonomous sensor platforms in a marine sensor network is described in the context of the autonomous oceanographic network scenario. ...

Eickstedt, Donald Patrick

2006-01-01T23:59:59.000Z

68

Energy efficient sensor network implementations  

SciTech Connect (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

69

SENSID: a Sensor Network Situation  

E-Print Network [OSTI]

Engineering, The University of Western Australia, 2005 #12;Abstract In the field of environmental monitoring not allow the network to react to events. It also wastes valuable energy by transmitting all data regardless

Cardell-Oliver, Rachel

70

Adaptive Routing in Underwater Delay/Disruption Tolerant Sensor Networks  

E-Print Network [OSTI]

, such as oceanographic data collection, pollution monitoring, offshore exploration, dis- aster prevention, assisted pose a range of challenges to underwater commu- nication and networking. Firstly, acoustic communication is usually employed in underwater sensor networks, and acoustic channels feature high error rate

Cui, Jun-Hong

71

Experiences from a Transportation Security Sensor Network Field Trial  

E-Print Network [OSTI]

(TSSN), which is based on open software systems and Service Oriented Architecture (SOA) principles, has Security Sensor Network (TSSN), based on Service Oriented Architecture (SOA) [3] principles, for monitoring oriented architecture, Mobile Rail Net- work, Trade Data Exchange, Virtual Network Operations Center I

Kansas, University of

72

Converging Redundant Sensor Network Information for Improved Building Control  

SciTech Connect (OSTI)

This project is investigating the development and application of sensor networks to enhance building energy management and security. Commercial, industrial and residential buildings often incorporate systems used to determine occupancy, but current sensor technology and control algorithms limit the effectiveness of these systems. For example, most of these systems rely on single monitoring points to detect occupancy, when more than one monitoring point would improve system performance. Phase I of the project focused on instrumentation and data collection. In Phase I, a new occupancy detection system was developed, commissioned and installed in a sample of private offices and open-plan office workstations. Data acquisition systems were developed and deployed to collect data on space occupancy profiles. In phase II of the project, described in this report, we demonstrate that a network of several sensors provides a more accurate measure of occupancy than is possible using systems based on single monitoring points. We also establish that analysis algorithms can be applied to the sensor network data stream to improve the accuracy of system performance in energy management and security applications, and show that it may be possible to use sensor network pulse rate to distinguish the number of occupants in a space. Finally, in this phase of the project we also developed a prototype web-based display that portrays the current status of each detector in a sensor network monitoring building occupancy. This basic capability will be extended in the future by applying an algorithm-based inference to the sensor network data stream, so that the web page displays the likelihood that each monitored office or area is occupied, as a supplement to the actual status of each sensor.

Dale K. Tiller; Gregor P. Henze

2005-12-01T23:59:59.000Z

73

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

E-Print Network [OSTI]

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

Lu, Chenyang

74

Converging Redundant Sensor Network Information for Improved Building Control  

SciTech Connect (OSTI)

This project investigated the development and application of sensor networks to enhance building energy management and security. Commercial, industrial and residential buildings often incorporate systems used to determine occupancy, but current sensor technology and control algorithms limit the effectiveness of these systems. For example, most of these systems rely on single monitoring points to detect occupancy, when more than one monitoring point could improve system performance. Phase I of the project focused on instrumentation and data collection. During the initial project phase, a new occupancy detection system was developed, commissioned and installed in a sample of private offices and open-plan office workstations. Data acquisition systems were developed and deployed to collect data on space occupancy profiles. Phase II of the project demonstrated that a network of several sensors provides a more accurate measure of occupancy than is possible using systems based on single monitoring points. This phase also established that analysis algorithms could be applied to the sensor network data stream to improve the accuracy of system performance in energy management and security applications. In Phase III of the project, the sensor network from Phase I was complemented by a control strategy developed based on the results from the first two project phases: this controller was implemented in a small sample of work areas, and applied to lighting control. Two additional technologies were developed in the course of completing the project. A prototype web-based display that portrays the current status of each detector in a sensor network monitoring building occupancy was designed and implemented. A new capability that enables occupancy sensors in a sensor network to dynamically set the 'time delay' interval based on ongoing occupant behavior in the space was also designed and implemented.

Dale Tiller; D. Phil; Gregor Henze; Xin Guo

2007-09-30T23:59:59.000Z

75

Problem Description:Problem Description: How can Researchers Monitor Ecosystems via Embedded Sensors?How can Researchers Monitor Ecosystems via Embedded Sensors? Proposed Solution:Proposed Solution: Wireless Sensors to Monitor and Record Biodiversity and  

E-Print Network [OSTI]

Sensors?How can Researchers Monitor Ecosystems via Embedded Sensors? Proposed Solution:Proposed Solution: Wireless Sensors to Monitor and Record Biodiversity and Ecological ChangesWireless Sensors to Monitor.jamesreserve.edu Introduction:Introduction: Embedded Sensors, a Model for Monitoring Wildlife in Their Habitat.Embedded Sensors

Hamilton, Michael P.

76

Radionuclide Sensors for Subsurface Water Monitoring  

SciTech Connect (OSTI)

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

Timothy DeVol

2006-06-30T23:59:59.000Z

77

Sensor network based vehicle classification and license plate identification system  

SciTech Connect (OSTI)

Typically, for energy efficiency and scalability purposes, sensor networks have been used in the context of environmental and traffic monitoring applications in which operations at the sensor level are not computationally intensive. But increasingly, sensor network applications require data and compute intensive sensors such video cameras and microphones. In this paper, we describe the design and implementation of two such systems: a vehicle classifier based on acoustic signals and a license plate identification system using a camera. The systems are implemented in an energy-efficient manner to the extent possible using commercially available hardware, the Mica motes and the Stargate platform. Our experience in designing these systems leads us to consider an alternate more flexible, modular, low-power mote architecture that uses a combination of FPGAs, specialized embedded processing units and sensor data acquisition systems.

Frigo, Janette Rose [Los Alamos National Laboratory; Brennan, Sean M [Los Alamos National Laboratory; Rosten, Edward J [Los Alamos National Laboratory; Raby, Eric Y [Los Alamos National Laboratory; Kulathumani, Vinod K [WEST VIRGINIA UNIV.

2009-01-01T23:59:59.000Z

78

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

SciTech Connect (OSTI)

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

Yi Jia

2011-02-28T23:59:59.000Z

79

IEEE SENSORS JOURNAL, VOL. 4, NO. 4, AUGUST 2004 395 Sensor Technologies for Monitoring Metabolic  

E-Print Network [OSTI]

IEEE SENSORS JOURNAL, VOL. 4, NO. 4, AUGUST 2004 395 Sensor Technologies for Monitoring Metabolic Michelle Wilson, Member, IEEE Abstract--A review of optical, chemical, and biological sensors to detect-on-a-chip research instrumentation. The sensors reviewed include optical sensors, at both research and commercial

Wilson, Denise

80

Electrochemical NOx Sensor for Monitoring Diesel Emissions  

SciTech Connect (OSTI)

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

Woo, L Y; Glass, R S

2008-11-14T23:59:59.000Z

Note: This page contains sample records for the topic "monitoring sensor network" 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

Analysis of Gradient-Based Routing Protocols in Sensor Networks  

E-Print Network [OSTI]

Sensor networks are envisioned to be widely used for habitat and environmental monitoring where, etc. Every physical event leaves some fingerprints in the environment in terms of the event's effect; e.g., fire increases the temperature, chemical spilling increases the contamination, nuclear leakage

82

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

E-Print Network [OSTI]

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

Heidemann, John

83

Sensor Network Lifetime Maximization Via Sensor Energy Balancing: Construction and Optimal Scheduling of Sensor Trees  

E-Print Network [OSTI]

in such a way that the total energy usage of the active sensor nodes in the tree is minimized. However whenSensor Network Lifetime Maximization Via Sensor Energy Balancing: Construction and Optimal Scheduling of Sensor Trees Ling Shi , Agostino Capponi , Karl H. Johansson and Richard M. Murray Abstract

Johansson, Karl Henrik

84

Modeling Spatially Correlated Data in Sensor Networks  

E-Print Network [OSTI]

Modeling Spatially Correlated Data in Sensor Networks APOORVA JINDAL and KONSTANTINOS PSOUNIS of spatially correlated sensor network data. The proposed model is Markovian in nature and can capture on the degree of spatial correlation in data, under real and synthetic traces. The real traces are obtained from

85

Optimize Storage Placement in Sensor Networks  

E-Print Network [OSTI]

of limited storage, communication capacity, and battery power is ameliorated. Placing storage nodesOptimize Storage Placement in Sensor Networks Bo Sheng, Member, IEEE, Qun Li, Member, IEEE, and Weizhen Mao Abstract--Data storage has become an important issue in sensor networks as a large amount

Li, Qun

86

Aquatic Debris Monitoring Using Smartphone-Based Robotic Sensors  

E-Print Network [OSTI]

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

87

In-situ prediction on sensor networks using distributed multiple linear regression models  

E-Print Network [OSTI]

Within sensor networks for environmental monitoring, a class of problems exists that requires in-situ control and modeling. In this thesis, we provide a solution to these problems, enabling model-driven computation where ...

Basha, Elizabeth (Elizabeth Ann)

2010-01-01T23:59:59.000Z

88

Precise Time Synchronization for Wireless Sensor Networks using the  

E-Print Network [OSTI]

of Information Technology and Electrical Engineering January 2010 #12;#12;Abstract For sensor networks a wide to the needs of data gathering, the main applica- tion of sensor networks. Sensor data is often useless

89

Optimal Location of a Mobile Sensor Continuum for Environmental Monitoring  

E-Print Network [OSTI]

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

Boyer, Edmond

90

CONVERGING REDUNDANT SENSOR NETWORK INFORMATION FOR IMPROVED BUILDING CONTROL  

SciTech Connect (OSTI)

Knowing how many people occupy a building, and where they are located, is a key component of building energy management and security. Commercial, industrial and residential buildings often incorporate systems used to determine occupancy, however, current sensor technology and control algorithms limit the effectiveness of both energy management and security systems. This topical report describes results from the first phase of a project to design, implement, validate, and prototype new technologies to monitor occupancy, control indoor environment services, and promote security in buildings. Phase I of the project focused on instrumentation and data collection. In this project phase a new occupancy detection system was developed, commissioned and installed in a sample of private offices and open-plan office workstations. Data acquisition systems were developed and deployed to collect data on space occupancy profiles. Analysis tools based on Bayesian probability theory were applied to the occupancy data generated by the sensor network. The inference of primary importance is a probability distribution over the number of occupants and their locations in a building, given past and present sensor measurements. Inferences were computed for occupancy and its temporal persistence in individual offices as well as the persistence of sensor status. The raw sensor data were also used to calibrate the sensor belief network, including the occupancy transition matrix used in the Markov model, sensor sensitivity, and sensor failure models. This study shows that the belief network framework can be applied to the analysis of data streams from sensor networks, offering significant benefits to building operation compared to current practice.

Dale K. Tiller; Gregor P. Henze

2004-11-01T23:59:59.000Z

91

A simulation model for the lifetime of wireless sensor networks  

E-Print Network [OSTI]

In this paper we present a model for the lifetime of wireless sensor networks. The model takes into consideration several parameters such as the total number of sensors, network size, percentage of sink nodes, location of sensors, the mobility of sensors, and power consumption. A definition of the life time of the network based on three different criteria is introduced; percentage of available power to total power, percentage of alive sensors to total sensors, and percentage of alive sink sensors to total sink sensors. A Matlab based simulator is developed for the introduced model. A number of wireless sensor networks scenarios are presented and discussed.

Elleithy, Abdelrahman

2012-01-01T23:59:59.000Z

92

Configurable dynamic privacy for pervasive sensor networks  

E-Print Network [OSTI]

Ubiquitous computing sensor networks have greatly augmented the functionality of interactive media systems by adding the ability to capture and store activity-related information. Analyzing the information recorded from ...

Gong, Nan-Wei

2009-01-01T23:59:59.000Z

93

air pollution monitors: Topics by E-print Network  

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

air pollution monitors First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 A Wireless Sensor Network Air...

94

Collector Receiver Design for Data Collection and Localization in Sensor-driven Networks  

E-Print Network [OSTI]

Collector Receiver Design for Data Collection and Localization in Sensor-driven Networks Bharath is communicating, falls on a network of collector nodes which are perpetually monitoring transmissions from with minimal capabilities, while shifting the complexity to a network of collector nodes. While the philosophy

Madhow, Upamanyu

95

Query Processing in Mobile Sensor Networks Wang-Chien Lee  

E-Print Network [OSTI]

, a sensor network for air pollution test, where all sensors are scattered in the air and transported to collect the data from the sensors about air pollution and traffic conditions. In comparison, vehicles, animals, air, and water). With self-propelling sensor nodes, a mobile sensor network is self

Giles, C. Lee

96

Cognitive Radio Networks as Sensor Networks  

E-Print Network [OSTI]

is used, assuming the cognitive radios know their ownfor Embedded Networked Sensing Cognitive Radio Networks AsJ. Pottie Introduction: Cognitive Radio (CR) Networks The

Bandari, Dorna; Yang, Seung R.; Zhao, Yue; Pottie, Gregory

2007-01-01T23:59:59.000Z

97

Radiation detection and situation management by distributed sensor networks  

SciTech Connect (OSTI)

Detection of radioactive materials in an urban environment usually requires large, portal-monitor-style radiation detectors. However, this may not be a practical solution in many transport scenarios. Alternatively, a distributed sensor network (DSN) could complement portal-style detection of radiological materials through the implementation of arrays of low cost, small heterogeneous sensors with the ability to detect the presence of radioactive materials in a moving vehicle over a specific region. In this paper, we report on the use of a heterogeneous, wireless, distributed sensor network for traffic monitoring in a field demonstration. Through wireless communications, the energy spectra from different radiation detectors are combined to improve the detection confidence. In addition, the DSN exploits other sensor technologies and algorithms to provide additional information about the vehicle, such as its speed, location, class (e.g. car, truck), and license plate number. The sensors are in-situ and data is processed in real-time at each node. Relevant information from each node is sent to a base station computer which is used to assess the movement of radioactive materials.

Jan, Frigo [Los Alamos National Laboratory; Mielke, Angela [Los Alamos National Laboratory; Cai, D Michael [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

98

An Environmental Monitoring System with Integrated Wired and Wireless Sensors  

E-Print Network [OSTI]

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

Huang, Yan

99

acoustic wave sensors: Topics by E-print Network  

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

acoustic wave devices can be used as wireless sensor elements (SAW transponders Zachmann, Gabriel 30 Underwater Acoustic Sensor Networks: Research Challenges CiteSeer...

100

acoustic wave sensor: Topics by E-print Network  

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

acoustic wave devices can be used as wireless sensor elements (SAW transponders Zachmann, Gabriel 30 Underwater Acoustic Sensor Networks: Research Challenges CiteSeer...

Note: This page contains sample records for the topic "monitoring sensor network" 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

Software Update Recovery for Wireless Sensor Networks  

E-Print Network [OSTI]

mechanism that uses loss-of- control to provide high-reliability, low energy, software updates, includingSoftware Update Recovery for Wireless Sensor Networks Stephen Brown1 and Cormac J. Sreenan2 1 Laboratory, University College Cork, Ireland Abstract. Updating software over the network is important

Sreenan, Cormac J.

102

Autonomic Intelligent Cyber Sensor to Support Industrial Control Network Awareness  

SciTech Connect (OSTI)

The proliferation of digital devices in a networked industrial ecosystem, along with an exponential growth in complexity and scope, has resulted in elevated security concerns and management complexity issues. This paper describes a novel architecture utilizing concepts of Autonomic computing and a SOAP based IF-MAP external communication layer to create a network security sensor. This approach simplifies integration of legacy software and supports a secure, scalable, self-managed framework. The contribution of this paper is two-fold: 1) A flexible two level communication layer based on Autonomic computing and Service Oriented Architecture is detailed and 2) Three complementary modules that dynamically reconfigure in response to a changing environment are presented. One module utilizes clustering and fuzzy logic to monitor traffic for abnormal behavior. Another module passively monitors network traffic and deploys deceptive virtual network hosts. These components of the sensor system were implemented in C++ and PERL and utilize a common internal D-Bus communication mechanism. A proof of concept prototype was deployed on a mixed-use test network showing the possible real world applicability. In testing, 45 of the 46 network attached devices were recognized and 10 of the 12 emulated devices were created with specific Operating System and port configurations. Additionally the anomaly detection algorithm achieved a 99.9% recognition rate. All output from the modules were correctly distributed using the common communication structure.

Todd Vollmer; Milos Manic; Ondrej Linda

2013-06-01T23:59:59.000Z

103

Understanding optimal data gathering in the energy and latency domains of a wireless sensor network  

E-Print Network [OSTI]

of city districts. In typical applications, sensors monitor their neighboring area, extract informationUnderstanding optimal data gathering in the energy and latency domains of a wireless sensor network Telekommunikation Wien (ftw.), Donau City Strae 1, 1220 Wien, Austria Received 14 October 2005; received in revised

Melodia, Tommaso

104

Oxygen sensor for monitoring gas mixtures containing hydrocarbons  

DOE Patents [OSTI]

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

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

1996-01-01T23:59:59.000Z

105

Oxygen sensor for monitoring gas mixtures containing hydrocarbons  

DOE Patents [OSTI]

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

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

1996-03-12T23:59:59.000Z

106

Wireless sensor systems and methods, and methods of monitoring structures  

DOE Patents [OSTI]

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

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

2007-02-20T23:59:59.000Z

107

Embedded Sensor Array Development for Composite Structure Integrity Monitoring  

SciTech Connect (OSTI)

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

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

2007-06-26T23:59:59.000Z

108

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

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

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

109

Host Event Based Network Monitoring  

SciTech Connect (OSTI)

The purpose of INL’s research on this project is to demonstrate the feasibility of a host event based network monitoring tool and the effects on host performance. Current host based network monitoring tools work on polling which can miss activity if it occurs between polls. Instead of polling, a tool could be developed that makes use of event APIs in the operating system to receive asynchronous notifications of network activity. Analysis and logging of these events will allow the tool to construct the complete real-time and historical network configuration of the host while the tool is running. This research focused on three major operating systems commonly used by SCADA systems: Linux, WindowsXP, and Windows7. Windows 7 offers two paths that have minimal impact on the system and should be seriously considered. First is the new Windows Event Logging API, and, second, Windows 7 offers the ALE API within WFP. Any future work should focus on these methods.

Jonathan Chugg

2013-01-01T23:59:59.000Z

110

Cooperative UAV-Based Communications Backbone for Sensor Networks  

SciTech Connect (OSTI)

The objective of this project is to investigate the use of unmanned air vehicles (UAVs) as mobile, adaptive communications backbones for ground-based sensor networks. In this type of network, the UAVs provide communication connectivity to sensors that cannot communicate with each other because of terrain, distance, or other geographical constraints. In these situations, UAVs provide a vertical communication path for the sensors, thereby mitigating geographic obstacles often imposed on networks. With the proper use of UAVs, connectivity to a widely disbursed sensor network in rugged terrain is readily achieved. Our investigation has focused on networks where multiple cooperating UAVs are used to form a network backbone. The advantage of using multiple UAVs to form the network backbone is parallelization of sensor connectivity. Many widely spaced or isolated sensors can be connected to the network at once using this approach. In these networks, the UAVs logically partition the sensor network into sub-networks (subnets), with one UAV assigned per subnet. Partitioning the network into subnets allows the UAVs to service sensors in parallel thereby decreasing the sensor-to-network connectivity. A UAV services sensors in its subnet by flying a route (path) through the subnet, uplinking data collected by the sensors, and forwarding the data to a ground station. An additional advantage of using multiple UAVs in the network is that they provide redundancy in the communications backbone, so that the failure of a single UAV does not necessarily imply the loss of the network.

Roberts, R S

2001-10-07T23:59:59.000Z

111

Electrochemical NOx Sensor for Monitoring Diesel Emissions  

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

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

112

Adaptive coherent interferometric imaging for sensor networks Gregoire Derveauxa)  

E-Print Network [OSTI]

with distributed sensor networks is presented. The sensors record the impulse response of the unknown background imaging when the background is known is considered in Ref.8. The sensors record an approximate impulseAdaptive coherent interferometric imaging for sensor networks Gr´egoire Derveauxa) INRIA Domaine de

Papanicolaou, George C.

113

Sensor Network Demonstration for In Situ Decommissioning - 13332  

SciTech Connect (OSTI)

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

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

2013-07-01T23:59:59.000Z

114

Mobility in Wireless Sensor Networks  

E-Print Network [OSTI]

A MAV D C ADV E D Micro Air Vehicle Network Manager C B D CA B A F A D B A E Micro Air Vehicle Network Manager C B MAV

Mehta, Ankur Mukesh

2012-01-01T23:59:59.000Z

115

MINIMIZATION OF SENSOR USAGE FOR TARGET TRACKING IN A NETWORK OF IRREGULARLY SPACED SENSORS  

E-Print Network [OSTI]

MINIMIZATION OF SENSOR USAGE FOR TARGET TRACKING IN A NETWORK OF IRREGULARLY SPACED SENSORS Thomas address the following scenario: a single target moves through a field of stationary sensors with known locations. At each time epoch, each sensor is either active or not; each active sensor outputs either target

Morrell, Darryl

116

Self-Powered Wireless Nano-scale Sensor Networks within Chemical Reactors  

E-Print Network [OSTI]

a reactor for a bottom-up control of the chemical synthesis with the ultimate goal of improvingSelf-Powered Wireless Nano-scale Sensor Networks within Chemical Reactors Eisa Zarepour1 Mahbub networks (NSNs) can be applied in many chemical applications to monitor and control the chemical process

New South Wales, University of

117

Towards a smart sensor interface for wearable cough monitoring  

E-Print Network [OSTI]

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

Odam, Kofi

118

Irrigation Monitoring with Soil Water Sensors  

E-Print Network [OSTI]

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

Enciso, Juan; Porter, Dana; Peries, Xavier

2007-01-19T23:59:59.000Z

119

Radioactive Target Detection Using Wireless Sensor Network  

E-Print Network [OSTI]

. By using the physical law for nuclear radiation isotopes, this chapter proposes a statistical method for wireless sensor network data to detect and locate a hidden nuclear target in a large study area. The method shown that the proposed method is effective and efficient in detection and location of the nuclear

Zhang, Tonglin

120

Energy Balanced Chain in Distributed Sensor Networks  

E-Print Network [OSTI]

Energy Balanced Chain in Distributed Sensor Networks Ivan Howitt Electrical & Computer Engineering because of their higher traffic. This paper suggests an energy balanced chain (EBC) which can efficiently the energy balance optimization problem in terms of the segmentation space. By adjusting the transmission

Howitt, Ivan

Note: This page contains sample records for the topic "monitoring sensor network" 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

Explicit Sensor Network Localization using Semidefinite ...  

E-Print Network [OSTI]

Key Words: Sensor Network Localization, Euclidean Distance Matrix ... Cliques in the graph of the SNL problem give rise to this degeneracy in the ..... cone (S) denote the convex cone generated by the set S. We use the Matlab notation 1 : n =.

2010-01-29T23:59:59.000Z

122

Designing Self-Sustainable Photovoltaic Sensor Network  

E-Print Network [OSTI]

, 2006 #12;2 Target Environment · Outdoor application ­ Wired power and battery has limitations. ­ Solar for power saving. ­ Power saving for single-hop is trivial. #12;3 Related Work on Solar Powered Sensor #12;4 Goals · Power saving for multi-hop networks under solar energy source. ­ Solar Energy: time

California at Berkeley, University of

123

Coverage and Connectivity Aware Neural Network Based Energy Efficient Routing in Wireless Sensor Networks  

E-Print Network [OSTI]

There are many challenges when designing and deploying wireless sensor networks (WSNs). One of the key challenges is how to make full use of the limited energy to prolong the lifetime of the network, because energy is a valuable resource in WSNs. The status of energy consumption should be continuously monitored after network deployment. In this paper, we propose coverage and connectivity aware neural network based energy efficient routing in WSN with the objective of maximizing the network lifetime. In the proposed scheme, the problem is formulated as linear programming (LP) with coverage and connectivity aware constraints. Cluster head selection is proposed using adaptive learning in neural networks followed by coverage and connectivity aware routing with data transmission. The proposed scheme is compared with existing schemes with respect to the parameters such as number of alive nodes, packet delivery fraction, and node residual energy. The simulation results show that the proposed scheme can be used in wi...

,; Kumar, Manoj; Patel, R B; 10.5121/jgraphhoc.2010.2105

2010-01-01T23:59:59.000Z

124

Homogeneous vs Heterogeneous Clustered Sensor Networks: A Comparative Study  

E-Print Network [OSTI]

1 Homogeneous vs Heterogeneous Clustered Sensor Networks: A Comparative Study Vivek Mhatre elected, serve for the entire lifetime of the network) in a homoge- neous network, it is evident

Rosenberg, Catherine P.

125

Underwater Sensor Networking: Research Challenges and Potential Applications  

E-Print Network [OSTI]

synchronization, and localization protocols for high- latency acoustic networks, long-duration network sleeping SCADA systems, but in- creasingly with more rapidly deployed sensor networks [39]. Advances in reducing

Heidemann, John

126

Electrochemical sensor for monitoring electrochemical potentials of fuel cell components  

DOE Patents [OSTI]

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

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

1993-01-01T23:59:59.000Z

127

Adaptive Sensor Activity Scheduling in Distributed Sensor Networks: A Statistical Mechanics Approach  

E-Print Network [OSTI]

of spatial-temporal events. The sensor network is modeled as a Markov random field on a graph, where concepts and wireless communications have enabled usage of inexpensive and miniaturized sensor nodes [1­3] that can #12;Effective use of sensor networks requires resource-aware operation; once deployed, energy sources

Ray, Asok

128

Power Sources for Wireless Sensor Abstract. Wireless sensor networks are poised to become a very significant  

E-Print Network [OSTI]

Power Sources for Wireless Sensor Networks Abstract. Wireless sensor networks are poised to become a very significant enabling technology in many sectors. Already a few very low power wireless sensor environment, alternative power sources must be employed. This paper reviews many potential power sources

Frechette, Luc G.

129

Security Schemes for Wireless Sensor Networks with Mobile Sink  

E-Print Network [OSTI]

........................ 35 10 Wireless sensor network with mobile sinks and sensor nodes using two separate key pools for key pre-distribution ......................................... 39 11 (a) Direct key discovery, (b) Indirect key discovery through interrmedi... Protocol parameter values .......................................................................... 108 1 CHAPTER I INTRODUCTION Mobility is exploited in the field of wireless sensor network [1], [2], [3], [4] to circum- vent multi...

Rasheed, Amar Adnan

2011-08-08T23:59:59.000Z

130

Autonomous Data Collection from Underwater Sensor Networks using Acoustic Communication  

E-Print Network [OSTI]

for an autonomous underwater vehicle (AUV) to collect data from an underwater sensor network. The sensors. A potential solution is the use of a mobile autonomous under- water vehicle (AUV) equipped with an acousticAutonomous Data Collection from Underwater Sensor Networks using Acoustic Communication Geoffrey A

Sukhatme, Gaurav S.

131

Power Management for Wireless Sensor Networks Based on Energy Budgets  

E-Print Network [OSTI]

Power Management for Wireless Sensor Networks Based on Energy Budgets Christian Renner Institute with wireless sensor networks powered by energy-harvesting supplies. We introduce the concept of an energy budget, the amount of energy available to a sensor node for a given period of time. The presented tools

Turau, Volker

132

ESC: Energy Synchronized Communication in Sustainable Sensor Networks  

E-Print Network [OSTI]

ESC: Energy Synchronized Communication in Sustainable Sensor Networks Yu Gu, Ting Zhu and Tian He Abstract--With advances in energy harvesting techniques, it is now feasible to build sustainable sensor of sustainable sensor networks is to effectively utilize a continuous stream of ambient energy. Instead

Massachusetts at Amherst, University of

133

Hybrid Sensor Networks: A Small World Gaurav Sharma  

E-Print Network [OSTI]

wires to a wireless sensor network can not only reduce the average energy expenditure per sensor node, but also the non-uniformity in the energy expenditure across the sensor nodes. Categories and Subject the average hop count of the network, resulting in a reduced energy dissipa- tion per node. We also show

Mazumdar, Ravi R.

134

On Perimeter Coverage in Wireless Sensor Networks with Minimum Cost  

E-Print Network [OSTI]

, and asset tracking [1], [2]. In monitoring applications, small battery-powered sensor nodes are deployed of the white house so as to ensure its security. Each sensor is associated with a cost. To reduce the total

Tam, Vincent W. L.

135

Background and Related Work Data Encoding for Failure-Prone Sensor Networks  

E-Print Network [OSTI]

Outline Background and Related Work Data Encoding for Failure-Prone Sensor Networks Encoding for Persistent Sensor Networks #12;Outline Background and Related Work Data Encoding for Failure-Prone Sensor Networks Outline 1 Background and Related Work Sensor Networks Failures in Sensor Networks Data Transfer

136

Energy Management in Wireless Sensor Network Operations  

E-Print Network [OSTI]

) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 9 Comparison of long-run average costs of policies in 4-node line network (ct = 1 and T = 1) . . . . . . . . . . . . . . . . . . . . . . . 61 10 Fluid- ow model of an energy harvesting sensor . . . . . . . . . . . . 66 11 Sample path of X(t...) under threshold-based node activation policy . . 69 12 Sample path of X(t) in an exponential on-o environment . . . . . . 76 13 Limiting availability for di erent values of threshold (L) . . . . . . . 78 14 Energy ow model of an energy harvesting...

Mohapatra, Arupa Kumar

2013-07-26T23:59:59.000Z

137

Defending against Search-based Physical Attacks in Sensor Networks  

E-Print Network [OSTI]

and destroy sensors with stealth by moving across the sensor network. In any case, the end result of physical or recommendations expressed in this material are those of the authors and do not necessarily reflect the views

Xuan, Dong

138

INTERACTING WITH SOCIAL NETWORKS TO IMPROVE HEALTHCARE BODY SENSOR NETWORKS  

E-Print Network [OSTI]

Funding for this project was provided by a grant from the Dean's Senior Research Fund and Stetson.2 Body Sensor Networks..................................................................5 2.2.1 Energy, or BSNs, can remotely collect patient data and upload vital statistics to servers over the Internet

Miles, Will

139

Exploiting Nonlinear Dynamics for Novel Sensor Networks (UMD-DUKE)  

E-Print Network [OSTI]

Exploiting Nonlinear Dynamics for Novel Sensor Networks (UMD-DUKE) · Network of nonlinear;Nonlinear Photonic Sensor Networks · Adam B. Cohen (Phys, IREAP) · Bhargava Ravoori (Phys, IREAP) · Karl R properties #12;Nonlinear Optoelectronic time-delayed feedback loop MZ EOM RF in bias VDC laser photo

Anlage, Steven

140

Stochastic Sensor Scheduling for Networked Control Systems Farhad Farokhi  

E-Print Network [OSTI]

Stochastic Sensor Scheduling for Networked Control Systems Farhad Farokhi and Karl H. Johansson Abstract Optimal sensor scheduling with applications to networked estimation and control systems to optimal control of Markov chains, we extract an optimal scheduling policy to fairly allocate the network

Johansson, Karl Henrik

Note: This page contains sample records for the topic "monitoring sensor network" 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

Automated Intruder Tracking using Particle Filtering and a Network of Binary Motion Sensors  

E-Print Network [OSTI]

infrared (PIR) motion sensors that suggest that our estimator is effective and degrades gracefully with increasing sensor refractory periods. Index Terms - Security, Sensor Networks, Particle Filter, Tracking, Sensor Fusion. I. INTRODUCTION Many new technologies for automated security, wireless networks

Goldberg, Ken

142

Enabling Long-Lived Sensor Networks Through Solar Energy Harvesting  

E-Print Network [OSTI]

Sensor Networks through Solar Energy Harvesting Jason Hsu,Heliomote A integrated solar energy harvesting and storageYellow bar represent solar energy received locally Solar

Jason Hsu; Sadaf Zahedi; Jonathan Friedman; Aman Kansal; Vijay Raghunathan; Mani Srivastava

2005-01-01T23:59:59.000Z

143

A mobile-agent based wireless sensing network for structural monitoring applications  

SciTech Connect (OSTI)

A new wireless sensing network paradigm is presented for structural monitoring applications. In this approach, both power and data interrogation commands are conveyed via a mobile agent that is sent to sensor nodes to perform intended interrogations, which can alleviate several limitations of the traditional sensing networks. Furthermore, the mobile agent provides computational power to make near real-time assessments on the structural conditions. This paper will discuss such prototype systems, which are used to interrogate impedance-based sensors for structural health monitoring applications. Our wireless sensor node is specifically designed to accept various energy sources, including wireless energy transmission, and to be wirelessly triggered on an as-needed basis by the mobile agent or other sensor nodes. The capabilities of this proposed sensing network paradigm are demonstrated in the laboratory and the field.

Taylor, Stuart G [Los Alamos National Laboratory; Farinholt, Kevin M [Los Alamos National Laboratory; Figueiredo, Eloi [Los Alamos National Laboratory; Park, Gyuhae [Los Alamos National Laboratory; Farrar, Charles R [Los Alamos National Laboratory; Flynn, Eric B [UCSD; Mascarenas, David L [UCSD; Todd, Michael D [UCSD

2008-01-01T23:59:59.000Z

144

Energy Efficiency Design Challenge in Sensor Networks Q.Gao, D.J.Holding, Y. Peng, K.J.Blow  

E-Print Network [OSTI]

Energy Efficiency Design Challenge in Sensor Networks Q.Gao, D.J.Holding, Y. Peng, K.J.Blow Aston efficiency design challenge Sensor nodes are likely to be battery powered, and it is often very difficult, and personalization; wildlife observation; battlefield or disaster area monitoring and interactive museums. 2 Energy

Haddadi, Hamed

145

Characterization, monitoring, and sensor technology catalogue  

SciTech Connect (OSTI)

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

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

1995-12-01T23:59:59.000Z

146

EnviroMic: Towards Cooperative Storage and Retrieval in Audio Sensor Networks  

E-Print Network [OSTI]

1 EnviroMic: Towards Cooperative Storage and Retrieval in Audio Sensor Networks Liqian Luo, Qing at Urbana-Champaign, mpward@uiuc.edu Abstract This paper presents the design, implementation, and evaluation of EnviroMic, a novel distributed acoustic monitoring, storage, and trace retrieval system. Audio represents

Stankovic, John A.

147

Wireless sensor networks for off-shore oil and gas installations  

E-Print Network [OSTI]

the production process, to either prevent or detect oil and gas leakage or to enhance the production flow ­ Underwater development and production of oil and gas needs networked sensors and actuators to monitor and communication technology (ICT) enables the oil, gas and energy (OGE) industries to increase productivity

Gjessing, Stein

148

E-Print Network 3.0 - ad-hoc wireless sensor Sample Search Results  

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

in wireless sensor networks The rapid progress of wireless communication and embedded micro-sensing MEMS... technologies has made wireless sensor networks possible. A wireless...

149

Variable Radii Connected Sensor Cover in Sensor Networks Zongheng Zhou, Samir Das, Himanshu Gupta  

E-Print Network [OSTI]

of the gathered data while minimizing energy usage in the network. Energy is spent due to message transmissions of active sensors should also form a connected communication graph, so that they can autonomously respond energy-cost connected sensor cover, when each sensor node can vary its sensing and transmission radius

Das, Samir R.

150

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

SciTech Connect (OSTI)

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

NONE

1995-06-01T23:59:59.000Z

151

Distributed Dynamic Clustering Algorithm in Uneven Distributed Wireless Sensor Network  

E-Print Network [OSTI]

the sensor networks energy efficient [3][4][5]. This helps to increase the lifetime of the sensor nodes and energy efficient routing has been presented in recent research literature [1]-[16]. In [1] an intelligent energy efficient de- ployment algorithm for cluster based WSNs is described, in which the sensor node

152

ENERGY EFFICIENT ROUTING IN WIRELESS SENSOR NETWORKS Curt Schurgers  

E-Print Network [OSTI]

the integration of communications, sensors and signal processing all together in one low-cost package. It is now feasible to fabricate ultra-small sensor nodes that can be scattered on the battlefield to gather strategic towards localized algorithms [1][2]. Due to the large number of sensors, network-scale interaction

Shihada, Basem

153

Energy Efficiency of Encryption Schemes Applied to Wireless Sensor Networks  

E-Print Network [OSTI]

Energy Efficiency of Encryption Schemes Applied to Wireless Sensor Networks Xueying Zhang, Howard M (ICC 2010), Cape Town, South Africa, May 2010, and "Energy Efficiency of Symmetric Key Cryptographic In this paper, we focus on the energy efficiency of secure communication in wireless sensor networks (WSNs). Our

Heys, Howard

154

Balancing Image Quality and Energy Consumption in Visual Sensor Networks  

E-Print Network [OSTI]

Balancing Image Quality and Energy Consumption in Visual Sensor Networks Kit-Yee Chow, King by hop through the sensor network. To reduce the energy used in transmission, the size of the images studies the tradeoff between image quality and energy consumption. We study the scenario that a number

Tam, Vincent W. L.

155

Attack-Resilient Time Synchronization for Wireless Sensor Networks  

E-Print Network [OSTI]

Attack-Resilient Time Synchronization for Wireless Sensor Networks Hui Song, Sencun Zhu in sensor networks were not designed with security in mind, thus leaving them vulnerable to security attacks. In this paper, we first identify various attacks that are effective to several representative time

Yener, Aylin

156

Nano-scale Sensor Networks for Chemical Eisa Zarepour1  

E-Print Network [OSTI]

Nano-scale Sensor Networks for Chemical Catalysis Eisa Zarepour1 Mahbub Hassan1 Chun Tung Chou1- searchers are now investigating the viability of nano-scale sensor networks (NSNs), which are formed natural gas to liquid fuel. Given that reliable wireless communi- cation at nano-scale is at very early

New South Wales, University of

157

APAWSAN: Actor Positioning for Aerial Wireless Sensor and Actor Networks  

E-Print Network [OSTI]

to be autonomous during deployment. The recent advances in development of small unmanned aerial vehicles (UAVs stations can improve network performance measures such as energy consumption and traffic load balancing vehicles (UAVs) with built in sensors made it possible to deploy aerial sensor and actor networks

Turgut, Damla

158

Monitoring system including an electronic sensor platform and an interrogation transceiver  

DOE Patents [OSTI]

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

Kinzel, Robert L.; Sheets, Larry R.

2003-09-23T23:59:59.000Z

159

Routing algorithms for large scale wireless sensor networks  

E-Print Network [OSTI]

such as power, memory, and CPU processing capabilities. In this thesis, we assume an All to All communication mode in an N ? N grid sensor network. We explore routing algorithms which load balance the network without compromising the shortest paths constrain. We... failed nodes). In static network case, we derived mathematical formulae representing the maximum and minimum loads on a sensor grid, when specific routing strategies are employed. We show improvement in performance in load balancing of the grid by using...

Nittala Venkata, Lakshmana Prasanth

2005-02-17T23:59:59.000Z

160

Holme et al. Soil Redox Sensor Networks RADIO FREQUENCY ENABLED SOIL REDOX POTENTIAL  

E-Print Network [OSTI]

Holme et al. Soil Redox Sensor Networks RADIO FREQUENCY ENABLED SOIL REDOX POTENTIAL SENSOR technologies that may be combined into a cost effective soil redox sensor network, discuss the merits of each as a component of said network, describe a prototype soil redox sensor network and perform basic laboratory

Rubinstein, Benjamin

Note: This page contains sample records for the topic "monitoring sensor network" 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

Introduction This first issue of ACM Transactions on Sensor Networks (TOSN) marks  

E-Print Network [OSTI]

in miniturization and new radio technology have fueled the tremendous interest in micro-sensor networks. In the USIntroduction This first issue of ACM Transactions on Sensor Networks (TOSN) marks a significant milestone in the evolution of sensor network research and technology. The field of sensor networks has seen

Zhao, Feng

162

Energy-Conservation Clustering Protocol based on Heat Conductivity for Wireless Sensor Networks  

E-Print Network [OSTI]

-sensors based on MEMS (Micro-Electro-Mechanical Systems) technology. A wireless sensor network is composedEnergy-Conservation Clustering Protocol based on Heat Conductivity for Wireless Sensor Networks critical issues in wireless sensor networks is energy efficiency because of the limited energy network

Landfeldt, Bjorn

163

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

164

Three heuristics for transmission scheduling in sensor networks with multiple mobile sinks  

E-Print Network [OSTI]

based on different principles (imitation of human decision making, stochastic transmission and constantThree heuristics for transmission scheduling in sensor networks with multiple mobile sinks Damla Algorithms, Design, Measurement, Experimentation Keywords Sensors, Sensor Networks, Transmission scheduling

Bölöni, Ladislau L

165

Mobile Air Pollution Monitoring Network W. Hedgecock, P. Vlgyesi, A. Ledeczi,  

E-Print Network [OSTI]

Mobile Air Pollution Monitoring Network W. Hedgecock, P. Völgyesi, A. Ledeczi, X. Koutsoukos, and A- resolution realtime pollution data at any location within the coverage area. We have prototyped sensors exposure to a given pollutant. Categories and Subject Descriptors H.4 [Information Systems Applications

Koutsoukos, Xenofon D.

166

Workplace Applications of Sensor Networks* W. Steven Conner1  

E-Print Network [OSTI]

]. The recent trend to integrate wireless networking into interactive devices such as PDAs, cellular phones throughout workplaces in both industrial and non-industrial office environments. These sensors include HVAC

Heidemann, John

167

Exploiting Sparsity in SDP Relaxation for Sensor Network ...  

E-Print Network [OSTI]

arising in predicting molecule structures and to graph rigidity. .... The QOP is solved numerically by SparsePOP [29], a matlab package for solving .... (3) a system of sensor network localization equations, and a matrix variable or a solution.

2008-01-15T23:59:59.000Z

168

Localized Pipeline Encroachment Detector System Using Sensor Network  

E-Print Network [OSTI]

NOMENCLATURE WSN Wireless Sensor Network ROW Right of Way WIFI Wireless Fidelity PC Personal Computer LED Light Emitting Diode USB Universal Serial Bus IEEE Institute of Electrical and Electronics Engineers A/D Analog to Digital WPAN Wireless...

Ou, Xiaoxi 1986-

2011-08-08T23:59:59.000Z

169

Adaptive sampling and forecasting with mobile sensor networks  

E-Print Network [OSTI]

This thesis addresses planning of mobile sensor networks to extract the best information possible out of the environment to improve the (ensemble) forecast at some verification region in the future. To define the information ...

Choi, Han-Lim

2009-01-01T23:59:59.000Z

170

Guaranteed delivery for geographical anycasting in wireless multi-sink sensor and sensor-actor networks  

E-Print Network [OSTI]

of sinks may receive the report from sensors, and meet application demands. However, the cost of anycasting and providing service may depend on the distance of the receiving sinks/actors to the re- porting sensor. Energy consumption and scalability are two challenging issues since wireless networks operate on limited

Stojmenovic, Ivan

171

A Realistic Power Consumption Model for Wireless Sensor Network Devices  

E-Print Network [OSTI]

. Recent analyses of WSN energy efficiency have been widely based on a sensor node power consumption model1 A Realistic Power Consumption Model for Wireless Sensor Network Devices Qin Wang, Mark Hempstead}@eecs.harvard.edu Abstract-- A realistic power consumption model of wireless communication subsystems typically used in many

Hempstead, Mark

172

Resource Allocation in Sensor Networks with Renewable Energy  

E-Print Network [OSTI]

Resource Allocation in Sensor Networks with Renewable Energy (Invited Paper) Zhoujia Mao Department@ece.osu.edu Abstract--Renewable energy sources can be attached to sensor nodes to provide energy replenishment to traditional resource optimization techniques. Thus, we develop a new power and rate allocation scheme

Koksal, Can Emre

173

Compact Representation of Coordinated Sampling Policies for Body Sensor Networks  

E-Print Network [OSTI]

.Talukder@jpl.nasa.gov Abstract Embedded sensors of a Body Sensor Network need to efficiently utilize their energy resources Department of Electrical Engineering Los Angeles, CA 90089, USA 1-213-821-0871 {lius,raghu}@usc.edu 2 of a compact representation is feasible with little loss in performance. The global optimal policy is computed

Panangadan, Anand

174

Pancakes: A Software Framework for Distributed Robot and Sensor Network  

E-Print Network [OSTI]

functionality in mil- itary, industrial, and consumer applications. In [13], the authors deployed a robotPancakes: A Software Framework for Distributed Robot and Sensor Network Applications Patrick Martin resources of the sensors as well as detected failures. To make multi-agent robotics applications

Egerstedt, Magnus

175

Distributed and Efficient Classifiers for Wireless Audio-Sensor Networks  

E-Print Network [OSTI]

efficient in terms of communication overhead. Index Terms--Sensors, Acoustic Classification, Features Selec evaluation results in terms of classification ac- curacy and energy expenditure trade-offs. Finally, SectionDistributed and Efficient Classifiers for Wireless Audio-Sensor Networks Baljeet Malhotra

Nascimento, Mario A.

176

Syncob: Collaborative Time Synchronization in Wireless Sensor Networks  

E-Print Network [OSTI]

an independent power sup- ply like a battery and use methods of energy harvesting like solar cells. To control the limited energy resources efficiently, wireless sensor networks typically undergo pe- riodic sleep-cycles to save energy. To collaborate for a common application, wireless sensor nodes have to be pre- cisely

Beigl, Michael

177

Pipeline Structural Health Monitoring Using Macro-fiber Composite Active Sensors  

SciTech Connect (OSTI)

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

A.B. Thien

2006-03-01T23:59:59.000Z

178

Probabilistic Field Coverage using a Hybrid Network of Static and Mobile Sensors  

E-Print Network [OSTI]

Probabilistic Field Coverage using a Hybrid Network of Static and Mobile Sensors Dan Wang, sensor network applications. For a field with unevenly distributed an area will be uncovered by any sensor, leaving a hole in static sensors, a quality coverage with acceptable network lifetime the field

Liu, Jiangchuan (JC)

179

In situ Monitoring of Cyanobacterial HABs in Western Lake Erie using Buoy-mounted Sensors  

E-Print Network [OSTI]

In situ Monitoring of Cyanobacterial HABs in Western Lake Erie using Buoy-mounted Sensors Primary for the rest of the western basin of Lake Erie. We propose to deploy environmental sensors at these sites. The first sensor is a fluorescence-based detector of phycocyanin, a pigment found predominantly

180

Wireless Sensor Network for Advanced Energy Management Solutions  

SciTech Connect (OSTI)

Eaton has developed an advanced energy management solution that has been deployed to several Industries of the Future (IoF) sites. This demonstrated energy savings and reduced unscheduled downtime through an improved means for performing predictive diagnostics and energy efficiency estimation. Eaton has developed a suite of online, continuous, and inferential algorithms that utilize motor current signature analysis (MCSA) and motor power signature analysis (MPSA) techniques to detect and predict the health condition and energy usage condition of motors and their connect loads. Eaton has also developed a hardware and software platform that provided a means to develop and test these advanced algorithms in the field. Results from lab validation and field trials have demonstrated that the developed advanced algorithms are able to detect motor and load inefficiency and performance degradation. Eaton investigated the performance of Wireless Sensor Networks (WSN) within various industrial facilities to understand concerns about topology and environmental conditions that have precluded broad adoption by the industry to date. A Wireless Link Assessment System (WLAS), was used to validate wireless performance under a variety of conditions. Results demonstrated that wireless networks can provide adequate performance in most facilities when properly specified and deployed. Customers from various IoF expressed interest in applying wireless more broadly for selected applications, but continue to prefer utilizing existing, wired field bus networks for most sensor based applications that will tie into their existing Computerized Motor Maintenance Systems (CMMS). As a result, wireless technology was de-emphasized within the project, and a greater focus placed on energy efficiency/predictive diagnostics. Commercially available wireless networks were only utilized in field test sites to facilitate collection of motor wellness information, and no wireless sensor network products were developed under this project. As an outgrowth of this program, Eaton developed a patented energy-optimizing drive control technology that is complementary to a traditional variable frequency drives (VFD) to enable significant energy savings for motors with variable torque applications, such as fans, pumps, and compressors. This technology provides an estimated energy saving of 2%-10% depending on the loading condition, in addition to the savings obtained from a traditional VFD. The combination of a VFD with the enhanced energy-optimizing controls will provide significant energy savings (10% to 70% depending on the load and duty cycle) for motors that are presently connected with across the line starters. It will also provide a more favorable return on investment (ROI), thus encouraging industries to adopt VFDs for more motors within their facilities. The patented technology is based on nonintrusive algorithms that estimate the instantaneous operating efficiency and motor speed and provide active energy-optimizing control of a motor, using only existing voltage and current sensors. This technology is currently being commercialized by Eaton’s Industrial Controls Division in their next generation motor control products. Due to the common nonintrusive and inferential nature of various algorithms, this same product can also include motor and equipment condition monitoring features, providing the facility owner additional information to improve process uptime and the associated energy savings. Calculations estimated potential energy savings of 261,397GWh/Yr ($15.7B/yr), through retrofitting energy-optimizing VFDs into existing facilities, and incorporating the solution into building equipment sold by original equipment manufacturers (OEMs) and installed by mechanical and electrical contractors. Utilizing MCSA and MPSA for predictive maintenance (PM) of motors and connected equipment reduces process downtime cost and the cost of wasted energy associated with shutting down and restarting the processes. Estimated savings vary depending on the industry segment and equi

Peter J. Theisen; Bin Lu, Charles J. Luebke

2009-09-23T23:59:59.000Z

Note: This page contains sample records for the topic "monitoring sensor network" 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

An Energy-Harvesting Sensor Architecture and Toolkit for Building Monitoring and Event Detection  

E-Print Network [OSTI]

An Energy-Harvesting Sensor Architecture and Toolkit for Building Monitoring and Event Detection of Michigan Ann Arbor, MI 48109 {bradjc,prabal}@umich.edu Abstract Understanding building usage patterns a new architecture for design- ing building-monitoring focused energy-harvesting sensors. The key

Dutta, Prabal

182

Energy Efficient Multi-mode Operation for Networked Wireless Sensors  

E-Print Network [OSTI]

Energy Efficient Multi-mode Operation for Networked Wireless Sensors Shanchieh Jay Yang, Niranjan Krishnamurthi, Cory D. Cress and Moises Sudit Rochester Institute of Technology, Rochester, NY 14623 Abstract of research work, ranging from device en- gineering to network protocol design, have been initiated to address

Jay Yang, Shanchieh

183

Directed Budget-Based Clustering for Wireless Sensor Networks  

E-Print Network [OSTI]

Directed Budget-Based Clustering for Wireless Sensor Networks Leonidas Tzevelekas National, distributed and energy efficient network self- organization. Budget-based clustering approaches have recently been proposed for this purpose, by specifying rules for distribut- ing a given budget of tokens

Stavrakakis, Ioannis

184

Infuse: A TDMA Based Data Dissemination Protocol for Sensor Networks #  

E-Print Network [OSTI]

Infuse: A TDMA Based Data Dissemination Protocol for Sensor Networks # Sandeep S. Kulkarni Mahesh of a new program across the network. In this paper, we present Infuse, a time division multiple access (TDMA) based reliable data dis­ semination protocol. Infuse takes two input parameters: (i) the choice

Kulkarni, Sandeep

185

Infuse: A TDMA Based Data Dissemination Protocol for Sensor Networks  

E-Print Network [OSTI]

Infuse: A TDMA Based Data Dissemination Protocol for Sensor Networks Sandeep S. Kulkarni Mahesh of a new program across the network. In this paper, we present Infuse, a time division multiple access (TDMA) based reliable data dis- semination protocol. Infuse takes two input parameters: (i) the choice

Kulkarni, Sandeep

186

System for monitoring an industrial process and determining sensor status  

DOE Patents [OSTI]

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

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

1997-01-01T23:59:59.000Z

187

System for monitoring an industrial process and determining sensor status  

DOE Patents [OSTI]

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

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

1995-01-01T23:59:59.000Z

188

Monitor and control of cockroach locomotion with piezoelectric sensors  

E-Print Network [OSTI]

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

Cooper, Rodrigo Alejandro

2009-05-15T23:59:59.000Z

189

A Taxonomy of Wireless Micro-Sensor Network Models Sameer Tilak  

E-Print Network [OSTI]

A Taxonomy of Wireless Micro-Sensor Network Models Sameer Tilak ¡ , Nael B. Abu this emerging field to classify wireless micro-sensor networks accord- ing to different communication functions networks with differing requirements. We believe that a better understanding of micro-sensor network re

Abu-Ghazaleh, Nael B.

190

Autonomic Intelligent Cyber-Sensor to Support Industrial Control Network Awareness  

SciTech Connect (OSTI)

The proliferation of digital devices in a networked industrial ecosystem, along with an exponential growth in complexity and scope, has resulted in elevated security concerns and management complexity issues. This paper describes a novel architecture utilizing concepts of autonomic computing and a simple object access protocol (SOAP)-based interface to metadata access points (IF-MAP) external communication layer to create a network security sensor. This approach simplifies integration of legacy software and supports a secure, scalable, and self-managed framework. The contribution of this paper is twofold: 1) A flexible two-level communication layer based on autonomic computing and service oriented architecture is detailed and 2) three complementary modules that dynamically reconfigure in response to a changing environment are presented. One module utilizes clustering and fuzzy logic to monitor traffic for abnormal behavior. Another module passively monitors network traffic and deploys deceptive virtual network hosts. These components of the sensor system were implemented in C++ and PERL and utilize a common internal D-Bus communication mechanism. A proof of concept prototype was deployed on a mixed-use test network showing the possible real-world applicability. In testing, 45 of the 46 network attached devices were recognized and 10 of the 12 emulated devices were created with specific operating system and port configurations. In addition, the anomaly detection algorithm achieved a 99.9% recognition rate. All output from the modules were correctly distributed using the common communication structure.

Denis T. Vollmer; Milos Manic; O. Linda

2014-05-01T23:59:59.000Z

191

Thermoelectric powered wireless sensors for spent fuel monitoring  

SciTech Connect (OSTI)

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

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

2011-07-01T23:59:59.000Z

192

Time Synchronization in Hierarchical TESLA Wireless Sensor Networks  

SciTech Connect (OSTI)

Time synchronization and event time correlation are important in wireless sensor networks. In particular, time is used to create a sequence events or time line to answer questions of cause and effect. Time is also used as a basis for determining the freshness of received packets and the validity of cryptographic certificates. This paper presents secure method of time synchronization and event time correlation for TESLA-based hierarchical wireless sensor networks. The method demonstrates that events in a TESLA network can be accurately timestamped by adding only a few pieces of data to the existing protocol.

Jason L. Wright; Milos Manic

2009-08-01T23:59:59.000Z

193

New Visualization Tools for Environmental Sensor Networks: Using Google Earth as an Interface to Micro-Climate and Multimedia Datasets  

E-Print Network [OSTI]

a small wireless network of micro-climate sensors—theReserve has three micro-climate sensor networks developed bymicro-climate sensor and image acquisition networks; the

Sean Askay

2006-01-01T23:59:59.000Z

194

Wireless Sensors and Networks for Advanced Energy Management  

SciTech Connect (OSTI)

Numerous national studies and working groups have identified low-cost, very low-power wireless sensors and networks as a critical enabling technology for increasing energy efficiency, reducing waste, and optimizing processes. Research areas for developing such sensor and network platforms include microsensor arrays, ultra-low power electronics and signal conditioning, data/control transceivers, and robust wireless networks. A review of some of the research in the following areas will be discussed: (1) Low-cost, flexible multi-sensor array platforms (CO{sub 2}, NO{sub x}, CO, humidity, NH{sub 3}, O{sub 2}, occupancy, etc.) that enable energy and emission reductions in applications such as buildings and manufacturing; (2) Modeling investments (energy usage and savings to drive capital investment decisions) and estimated uptime improvements through pervasive gathering of equipment and process health data and its effects on energy; (3) Robust, self-configuring wireless sensor networks for energy management; and (4) Quality-of-service for secure and reliable data transmission from widely distributed sensors. Wireless communications is poised to support technical innovations in the industrial community, with widespread use of wireless sensors forecasted to improve manufacturing production and energy efficiency and reduce emissions. Progress being made in wireless system components, as described in this paper, is helping bring these projected improvements to reality.

Hardy, J.E.

2005-05-06T23:59:59.000Z

195

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

SciTech Connect (OSTI)

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

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

2012-08-31T23:59:59.000Z

196

Detecting the Influence of Spreading in Social Networks with Excitable Sensor Networks  

E-Print Network [OSTI]

Detecting spreading outbreaks in social networks with sensors is of great significance in applications. Inspired by the formation mechanism of human's physical sensations to external stimuli, we propose a new method to detect the influence of spreading by constructing excitable sensor networks. Exploiting the amplifying effect of excitable sensor networks, our method can better detect small-scale spreading processes. At the same time, it can also distinguish large-scale diffusion instances due to the self-inhibition effect of excitable elements. Through simulations of diverse spreading dynamics on typical real-world social networks (facebook, coauthor and email social networks), we find that the excitable senor networks are capable of detecting and ranking spreading processes in a much wider range of influence than other commonly used sensor placement methods, such as random, targeted, acquaintance and distance strategies. In addition, we validate the efficacy of our method with diffusion data from a real-wor...

Pei, Sen; Zheng, Zhiming

2015-01-01T23:59:59.000Z

197

Intrusion detection and monitoring for wireless networks.  

SciTech Connect (OSTI)

Wireless computer networks are increasing exponentially around the world. They are being implemented in both the unlicensed radio frequency (RF) spectrum (IEEE 802.11a/b/g) and the licensed spectrum (e.g., Firetide [1] and Motorola Canopy [2]). Wireless networks operating in the unlicensed spectrum are by far the most popular wireless computer networks in existence. The open (i.e., proprietary) nature of the IEEE 802.11 protocols and the availability of ''free'' RF spectrum have encouraged many producers of enterprise and common off-the-shelf (COTS) computer networking equipment to jump into the wireless arena. Competition between these companies has driven down the price of 802.11 wireless networking equipment and has improved user experiences with such equipment. The end result has been an increased adoption of the equipment by businesses and consumers, the establishment of the Wi-Fi Alliance [3], and widespread use of the Alliance's ''Wi-Fi'' moniker to describe these networks. Consumers use 802.11 equipment at home to reduce the burden of running wires in existing construction, facilitate the sharing of broadband Internet services with roommates or neighbors, and increase their range of ''connectedness''. Private businesses and government entities (at all levels) are deploying wireless networks to reduce wiring costs, increase employee mobility, enable non-employees to access the Internet, and create an added revenue stream to their existing business models (coffee houses, airports, hotels, etc.). Municipalities (Philadelphia; San Francisco; Grand Haven, MI) are deploying wireless networks so they can bring broadband Internet access to places lacking such access; offer limited-speed broadband access to impoverished communities; offer broadband in places, such as marinas and state parks, that are passed over by traditional broadband providers; and provide themselves with higher quality, more complete network coverage for use by emergency responders and other municipal agencies. In short, these Wi-Fi networks are being deployed everywhere. Much thought has been and is being put into evaluating cost-benefit analyses of wired vs. wireless networks and issues such as how to effectively cover an office building or municipality, how to efficiently manage a large network of wireless access points (APs), and how to save money by replacing an Internet service provider (ISP) with 802.11 technology. In comparison, very little thought and money are being focused on wireless security and monitoring for security purposes.

Thomas, Eric D.; Van Randwyk, Jamie A.; Lee, Erik J.; Stephano, Amanda (Indiana University); Tabriz, Parisa (University of Illinois at Urbana-Champaign); Pelon, Kristen (Cedarville University); McCoy, Damon (University of Colorado, Boulder); Lodato, Mark (Lafayette College); Hemingway, Franklin (University of New Mexico); Custer, Ryan P.; Averin, Dimitry (Polytechnic University); Franklin, Jason (Carnegie Mellon University); Kilman, Dominique Marie

2005-11-01T23:59:59.000Z

198

TCPL: A Defense against wormhole attacks in wireless sensor networks  

SciTech Connect (OSTI)

Do In this paper presents recent advances in technology have made low-cost, low-power wireless sensors with efficient energy consumption. A network of such nodes can coordinate among themselves for distributed sensing and processing of certain data. For which, we propose an architecture to provide a stateless solution in sensor networks for efficient routing in wireless sensor networks. This type of architecture is known as Tree Cast. We propose a unique method of address allocation, building up multiple disjoint trees which are geographically inter-twined and rooted at the data sink. Using these trees, routing messages to and from the sink node without maintaining any routing state in the sensor nodes is possible. In this paper, we introduce the wormhole attack, a severe attack in ad hoc networks that is particularly challenging to defend against. The wormhole attack is possible even if the attacker has not compromised any hosts and even if all communication provides authenticity and confidentiality. In the wormhole attack, an attacker records packets (or bits) at one location in the network, tunnels them to another location, and retransmits them there into the network. The wormhole attack can form a serious threat in wireless networks, especially against many sensor network routing protocols and location-based wireless security systems. For example, most existing ad hoc network routing protocols, without some mechanism to defend against the wormhole attack, would be unable to find routes longer than one or two hops, severely disrupting communication. We present a new, general mechanism, called packet leashes, for detecting and thus defending against wormhole attacks, and we present a specific protocol, called TIK, that implements leashes.

Kumar, K. E. Naresh [PG Student, Dept of Computer Science and Engineering, KBNCE, Gulbarga, Karnataka (India); Waheed, Mohd. Abdul [Asst. Professor, Dept of Computer Science and Engineering, KBNCE, Gulbarga, Karnataka (India); Basappa, K. Kari [Professor, Dept of E and CE, Dayanand College of Engineering, Banglore, Karnataka (India)

2010-10-26T23:59:59.000Z

199

Robust Semidefinite Programming Approaches for Sensor Network ...  

E-Print Network [OSTI]

May 21, 2006 ... Sample random problem with 20 sensors, 12 anchors . ... Section 2 with background and notation, including information on the linear ...

2006-05-21T23:59:59.000Z

200

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

E-Print Network [OSTI]

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

Simunic, Tajana

Note: This page contains sample records for the topic "monitoring sensor network" 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

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

E-Print Network [OSTI]

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

Liu, Yunhao

202

Development of self-monitoring structural composites with integrated sensing networks  

E-Print Network [OSTI]

using embedded micro-sensors and network communicationand a 4-tree micro-controller network architecture for dataand a four-tree micro-controller network architecture for

Huang, Yi

2008-01-01T23:59:59.000Z

203

Connected K-Coverage Problem in Sensor Networks Zongheng Zhou, Samir Das, Himanshu Gupta  

E-Print Network [OSTI]

energy usage in the network. Energy is spent due to message transmissions among sensor nodes, or due-- In overdeployed sensor networks, one approach to conserve energy is to keep only a small subset of sensors active" by at least K different sensors in M, and the communication graph induced by M is connected. For the above

Das, Samir R.

204

Connected K-Coverage Problem in Sensor Networks Zongheng Zhou, Samir Das, Himanshu Gupta  

E-Print Network [OSTI]

energy usage in the network. Energy is spent due to message transmissions among sensor nodes, or due-- In overdeployed sensor networks, one approach to conserve energy is to keep only a small subset of sensors active" by at least different sensors in ¡ , and the communication graph induced by ¡ is connected. For the above

Gupta, Himanshu

205

Reconfigurable middleware architectures for large scale sensor networks  

SciTech Connect (OSTI)

Wireless sensor networks, in an e#11;ffort to be energy efficient, typically lack the high-level abstractions of advanced programming languages. Though strong, the dichotomy between these two paradigms can be overcome. The SENSIX software framework, described in this dissertation, uniquely integrates constraint-dominated wireless sensor networks with the flexibility of object-oriented programming models, without violating the principles of either. Though these two computing paradigms are contradictory in many ways, SENSIX bridges them to yield a dynamic middleware abstraction unifying low-level resource-aware task recon#12;figuration and high-level object recomposition.

Brennan, Sean M.

2010-03-01T23:59:59.000Z

206

Time and Energy Pro ling in Production Sensor Networks with Quanto  

E-Print Network [OSTI]

Time and Energy Pro ling in Production Sensor Networks with Quanto Basil Crow Department to production sensor networks alike. Introduction Energy is a scarce resource in battery-operated embedded [ ]. To make matters worse, the infrastructure for time and energy pro ling in production sensor networks

Fonseca, Rodrigo

207

OASiS: A Service-Oriented Architecture for Ambient-Aware Sensor Networks  

E-Print Network [OSTI]

OASiS: A Service-Oriented Architecture for Ambient-Aware Sensor Networks Xenofon Koutsoukos, Manish of a service-oriented architecture for wireless sensor networks. 1 Introduction Wireless sensor networks (WSNs by multiple clients exercising different functionalities. A service-oriented architecture (SOA) offers

Koutsoukos, Xenofon D.

208

The Effect of Neighbor Graph Connectivity on Coverage Redundancy in Wireless Sensor Networks  

E-Print Network [OSTI]

that the network field is covered by these nodes at the desired ratio while the usage of the energy by the sensorThe Effect of Neighbor Graph Connectivity on Coverage Redundancy in Wireless Sensor Networks problems in wireless sensor networks. To reduce the energy consumption that arises when the high number

Varela, Carlos

209

Energy-Aware Routing in Sensor Networks: A Large Systems Approach  

E-Print Network [OSTI]

Energy-Aware Routing in Sensor Networks: A Large Systems Approach Longbi Lin, Ness B. Shroff, and R capacity. Index Terms-- Energy-Aware Routing, Sensor Network, Large System, Mathematical Programming/Optimization, Simulations I. INTRODUCTION Energy-aware routing problem in sensor networks has received significant attention

Paris-Sud XI, Université de

210

Delay-Tolerant Data Gathering in Energy Harvesting Sensor Networks With a Mobile Sink  

E-Print Network [OSTI]

Delay-Tolerant Data Gathering in Energy Harvesting Sensor Networks With a Mobile Sink Xiaojiang Ren collection in an energy harvesting sensor network with a mobile sink, where a mobile sink travels along, this is the first kind of work of data collection for energy harvesting sensor networks with mobile sinks. I

Liang, Weifa

211

A Practical Theory of Micro-Solar Power Sensor Networks JAEIN JEONG, Cisco Systems  

E-Print Network [OSTI]

9 A Practical Theory of Micro-Solar Power Sensor Networks JAEIN JEONG, Cisco Systems DAVID CULLER Reference Format: Jeong, J. and Culler, D. 2012. A practical theory of micro-solar power sensor networks planning for micro-solar power sensor networks" in Proceedings of the 7th International Conference

California at Berkeley, University of

212

QoS Considerations in Wireless Sensor Networks for Telemedicine Sunil Kumar b **  

E-Print Network [OSTI]

micro sensor technology (Mobile Sensor Networks for Telemedicine applications -- MSNT) provides Networks, Telemedicine, CAC, QoS, Data Query 1. INTRODUCTION Advances in micro-electro-mechanical systemsQoS Considerations in Wireless Sensor Networks for Telemedicine Fei Hu a * Sunil Kumar b

Kumar, Sunil

213

Using Micro-Genetic Algorithms to Improve Localization in Wireless Sensor Networks  

E-Print Network [OSTI]

Using Micro-Genetic Algorithms to Improve Localization in Wireless Sensor Networks Vincent Tam methods, micro- genetic algorithms, distance measures. I. INTRODUCTION A wireless sensor network of Hong Kong, Hong Kong. Email: {vtam, kycheng, kslui}@eee.hku.hk Abstract-- Wireless sensor networks

Tam, Vincent W. L.

214

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

SciTech Connect (OSTI)

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

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

2012-10-09T23:59:59.000Z

215

Exploiting Heterogeneity in Sensor Networks Mark Yarvis  

E-Print Network [OSTI]

lifetime and reliability without significantly increasing the cost. For example, Intel has deployed a pilot provide in-network data proc- essing, longer-term storage, and access to building network infrastructures

Singh, Suresh

216

An infrastructure for passive network monitoring of application data streams  

SciTech Connect (OSTI)

When diagnosing network problems, it is often desirable to have a view of traffic inside the network. In this paper we describe an infrastructure for passive monitoring that can be used to determine which segments of the network are the source of problems for an application data stream. The monitoring hosts are relatively low-cost, off-the-shelf PCs. A unique feature of the infrastructure is secure activation of monitoring hosts in the core of the network without direct network administrator intervention.

Agarwal, Deb; Gonzalez, Jose Maria; Jin, Guojun; Tierney, Brian

2003-03-01T23:59:59.000Z

217

Maximizing Network Lifetime Via 3G Gateway Assignment in Dual-Radio Sensor Networks  

E-Print Network [OSTI]

- ments, such as temperature, humidity, wind, solar radiation, etc. [3]. Sensor nodes are typically are no longer applicable. Rather, a third party network, e.g., FDDI, ISDN, or VPN, is to be leased

California at Berkeley, University of

218

Variable Radii Connected Sensor Cover in Sensor Networks Zongheng Zhou, Samir Das, Himanshu Gupta  

E-Print Network [OSTI]

minimizing energy usage in the network. En- ergy is spent due to message transmissions by the radio interface a connected communication graph, so that they can autonomously respond to application queries and/or tasks is fixed. In this article, we address the problem of selecting a minimum energy-cost connected sensor cover

Gupta, Himanshu

219

Ivan Stojmenovic 1 Wireless Sensor Networks  

E-Print Network [OSTI]

· Temperature, Chemicals · Light, Vibrations, Motion · Seismic data, Acoustic data · strain, torque, load Stojmenovic 7 Applications.. more.. Habitat monitoring UCLA Environment Agriculture Pollution Meteorological

Stojmenovic, Ivan

220

Liquid Resin Infusion process monitoring with superimposed Fibre Bragg Grating sensor  

E-Print Network [OSTI]

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

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "monitoring sensor network" 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

Active Sensor Wave Propagation Health Monitoring of Beam and Plate Structures  

E-Print Network [OSTI]

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

Giurgiutiu, Victor

222

Solar-aware Routing in Wireless Sensor Networks  

E-Print Network [OSTI]

Solar-aware Routing in Wireless Sensor Networks Thiemo Voigt, Hartmut Ritter and Jochen Schiller energy sources such as solar power may provide unlimited energy resources to a changing subset these nodes is appealing. In this paper, we present solar-aware routing, a rout- ing protocol for wireless

223

On the Reliability of Wireless Sensor Networks Communications  

E-Print Network [OSTI]

On the Reliability of Wireless Sensor Networks Communications Alexandre Mouradian and Isabelle Aug applications, which must meet time and reliability requirements. Works on the real-time ca- pability of WSNs have been proposed [1]. In this paper we propose to study the achievable reliability of WSNs, tacking

Paris-Sud XI, Université de

224

VEHICLE TRACKING USING MOBILE WIRELESS SENSOR NETWORKS DURING DYNAMIC LOAD  

E-Print Network [OSTI]

and put into service, engineers lack cost-effective methods for measuring the actual loads imposedVEHICLE TRACKING USING MOBILE WIRELESS SENSOR NETWORKS DURING DYNAMIC LOAD TESTING OF HIGHWAY in the understanding of vehicle-bridge interactions. Direct measurement of the complex coupling that naturally exists

Lynch, Jerome P.

225

Minimum-Hot-Spot Query Trees for Wireless Sensor Networks  

E-Print Network [OSTI]

an energy- efficient query routing tree. (a) Energy harvesting for battery- less nodes for the (b) Voltree to the querying node. Energy-efficient query routing trees are needed in a plethora of systems such as PeopleMinimum-Hot-Spot Query Trees for Wireless Sensor Networks Georgios Chatzimilioudis Dept

Zeinalipour, Demetris

226

Optimizing Tree Reconfiguration for Mobile Target Tracking in Sensor Networks  

E-Print Network [OSTI]

nodes in the tree may become faraway from the root of the tree, and hence a large amount of energy mayOptimizing Tree Reconfiguration for Mobile Target Tracking in Sensor Networks Wensheng Zhang and then the collaboration among them becomes an important issue. In [1], a tree-based approach has been proposed

Zhang, Wensheng

227

Tethys: A Distributed Algorithm for Intelligent Aggregation in Sensor Networks  

E-Print Network [OSTI]

energy than a naive, shortest-path tree due to the increased computation energy cost for performing.uiuc.edu, harris@dei.unipd.it, rhk@cs.uiuc.edu Abstract-- One key issue in wireless sensor networks is energy efficiency. Aggregation techniques attempt to minimize the energy expended in communication by processing

Kravets, Robin

228

Saving Energy by Adjusting Transmission Power in Wireless Sensor Networks  

E-Print Network [OSTI]

and communication areas. Energy-efficient communication is an important issue in WSNs because of the limited power distributed algorithms to reduce communication energy consumption in WSNs by minimizing the total transmissionSaving Energy by Adjusting Transmission Power in Wireless Sensor Networks Xiao Chen Department

Rowe, Neil C.

229

Backcasting: A New Approach to Energy Conservation in Sensor Networks  

E-Print Network [OSTI]

, Backcasting can reduce the energy consumption by roughly a factor of 10 while providing the same accuracy-00-1-0390 #12;but high densities also place heavy demands on bandwidth and energy consumption for communicationBackcasting: A New Approach to Energy Conservation in Sensor Networks Rebecca Willett1 , Aline

Willett, Rebecca

230

Interaction Patterns for Resilient Intermittently-Connected Static Sensor Networks  

E-Print Network [OSTI]

a significant percentage of time in low energy consumption (sleep) mode [1]. Depending on the "depth. CONTEXT AND PROBLEM DEFINITION A. Energy constraints and intermittent connectivity The lifespan of a sensor network is typically determined by the amount of available energy in the nodes and the rate

Bartos, Radim

231

Minimizing Energy Consumption in Body Sensor Networks via Convex Optimization  

E-Print Network [OSTI]

Minimizing Energy Consumption in Body Sensor Networks via Convex Optimization Sidharth Nabar energy consumption while limiting the latency in data transfer. In this paper, we focus on polling energy consumption and latency. We show that this problem can be posed as a geometric program, which

Poovendran, Radha

232

Optimizing physical layer parameters for wireless sensor networks  

E-Print Network [OSTI]

#12;Abstract Wireless sensor networks utilize battery-operated nodes, and thus energy efficiency of Master of Science in Electrical and Computer Engineering University of Rochester Rochester, New York 2007 the University of Rochester from 2002 to 2006, and graduated with a Bachelor of Science in Electrical

Heinzelman, Wendi

233

Optimizing Physical Layer Parameters for Wireless Sensor Networks  

E-Print Network [OSTI]

relay distance and the optimal transmit energy as a function of channel noise level and path loss University of Economics and Technology, Ankara, TURKEY As wireless sensor networks utilize battery-operated nodes, energy efficiency is of paramount importance at all levels of system design. In order to save

Heinzelman, Wendi

234

Roadmap Query for Sensor Network Assisted Navigation in Dynamic Environments  

E-Print Network [OSTI]

Roadmap Query for Sensor Network Assisted Navigation in Dynamic Environments Sangeeta Bhattacharya approach that integrates a roadmap based navigation algorithm with a novel WSN query protocol called Roadmap Query (RQ). RQ enables collection of frequent, up-to- date information about the surrounding

Lu, Chenyang

235

Energy Efficient Intrusion Detection in Camera Sensor Networks  

E-Print Network [OSTI]

Energy Efficient Intrusion Detection in Camera Sensor Networks Primoz Skraba1 and Leonidas Guibas2 1 Department of Electrical Engineering Stanford University, Stanford, CA 94305 primoz@stanford.edu 2 such paths is intractable, since there is generally an infinite number of potential paths. Using a geometric

Guibas, Leonidas J.

236

Energy-Efficient Routing Schemes for Wireless Sensor Networks  

E-Print Network [OSTI]

1 Energy-Efficient Routing Schemes for Wireless Sensor Networks Maleq Khan Gopal Pandurangan Bharat spanning tree (MST) is the optimal data aggregation tree for energy-efficient rout- ing. We then study energy-efficient distributed algorithms for constructing MSTs. The GHS algorithm to construct MST has

Khan, Maleq

237

Utility-based Routing in Wireless Sensor Networks  

E-Print Network [OSTI]

Utility-based Routing in Wireless Sensor Networks Xiaoguang Li and Jie Wu Department of Computer the existing utility-based routing protocols for WSNs. We put them into sev- eral categories according to their utility properties, such as delay, cost, and packet delivery ratio. In addition, we will also cover

Wu, Jie

238

Redundancy Control in Large Scale Sensor Networks via Compressive Sensing  

E-Print Network [OSTI]

. R. China 2 NEC Labs, Beijing, P. R. China Abstract: In wireless sensor networks for smart city 1 Introduction & background With the growing demands of "smart planet" and "smart city" applications or smart planet applications, massive volumes of real-time sensory data are being generated in every second

Wang, Yongcai

239

Leakage-Aware Energy Synchronization for Wireless Sensor Networks  

E-Print Network [OSTI]

Leakage-Aware Energy Synchronization for Wireless Sensor Networks Ting Zhu, Ziguo Zhong, Yu Gu-capacitor as the only energy storage unit. To efficiently use the harvested energy, we design and imple- ment leakage-aware con- trol can effectively utilize energy that could otherwise leak away. Nodes running leakage-aware

Zhang, Zhi-Li

240

Policy-based Management of Body-Sensor Networks  

E-Print Network [OSTI]

Keoh,S. Twidle,K. Pryce,N. Schaeffer-Filho,A. Lupu,E. Dulay,N. Sloman,M. Heeps,S. Strowes,S. Sventek,J.S. Katsiri,E. Proceedings of the International Workshop on Wearable and Implantable Body Sensor Networks, Aachen, Germany, March 2007

Keoh, S.; Twidle, K.; Pryce, N.; Schaeffer-Filho, A.; Lupu, E.; Dulay, N.; Sloman, M.; Heeps, S.

Note: This page contains sample records for the topic "monitoring sensor network" 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.


241

Predictive Protocol Management with Contingency Planning for Wireless Sensor Networks  

E-Print Network [OSTI]

on enabling sensor and actuator connectivity without the use of wires. Energy consumption among the wireless of the WSN operational mode in order to optimize the energy utilization based on the time varying characteristics of the Radio-Frequency (RF) in which the network operates. I. INTRODUCTION Energy efficiency

Raja, Anita

242

Active Query Forwarding in Sensor Networks Narayanan Sadagopan  

E-Print Network [OSTI]

in this paper to calculate the energy costs associated with ACQUIRE. The models permit us to characterize schemes such as flooding-based querying (FBQ) and expanding ring search (ERS), in terms of energy usage data, this simple approach can be highly inefficient. In the context of energy-starved sensor networks

Krishnamachari, Bhaskar

243

SenseTK: A Multimodal, Multimedia Sensor Networking Toolkit  

E-Print Network [OSTI]

of such systems include the need to push application processing deep within the sensor network, the need to bridge maintenance on ship vessels as well as semiconductor plants [12]. As small computing devices continue that programmatically and operationally, the system needs to be able to bridge a variety of hardware and software

Bulusu, Nirupama

244

Multi-Level TESLA: Broadcast Authentication for Distributed Sensor Networks  

E-Print Network [OSTI]

Multi-Level µTESLA: Broadcast Authentication for Distributed Sensor Networks DONGGANG LIU and PENG named multi-level µTESLA based on µTESLA, a broadcast authentication protocol whose scalability is limited by its unicast-based initial parameter distribution. Multi-level µTESLA satisfies several nice

Ning, Peng

245

Pancakes: A Software Framework for Distributed Robot and Sensor Network  

E-Print Network [OSTI]

, industrial, and consumer applications. In [14], the authors deployed a robot to maintain an office gardenPancakes: A Software Framework for Distributed Robot and Sensor Network Applications Patrick Martin environment. To make multi-agent robotics applications, such as the prior examples, work across different

Egerstedt, Magnus

246

Short-Term Solar Energy Forecasting Using Wireless Sensor Networks  

E-Print Network [OSTI]

Short-Term Solar Energy Forecasting Using Wireless Sensor Networks Stefan Achleitner, Tao Liu an advantage for output power prediction. Solar Energy Prediction System Our prediction model is based variability of more then 100 kW per minute. For practical usage of solar energy, predicting times of high

Cerpa, Alberto E.

247

Forecasting Building Occupancy Using Sensor Network James Howard  

E-Print Network [OSTI]

of the forecasting algorithm for the different conditions. 1. INTRODUCTION According to the U.S. Department of Energy could take advantage of times when electricity cost is lower, to chill a cold water storage tankForecasting Building Occupancy Using Sensor Network Data James Howard Colorado School of Mines

Hoff, William A.

248

Distributed, Adaptive Algorithm for Deployment of Nonholonomic Sensor Networks  

E-Print Network [OSTI]

-wise continuous light distribution function. I. INTRODUCTION The problem of controlling networked robots has, manipulation in hazardous environments [1], ex- ploration, rescue missions, automatic surveillance [2] over a group of mobile sensors to solve a facility location problem [11] by using centroidal Voronoi

249

Discrete Gene Regulatory Networks (dGRNs): A novel approach to configuring sensor networks  

E-Print Network [OSTI]

and speed (sensor variables). The question is: how is this best done? A centralized optimization approach.lastname@comlab.ox.ac.uk Abstract--The operation of a sensor network is determined by a large number of parameters) it is general-purpose, and can be applied to a variety of parameter tuning problems; and 2) it generates

Jeavons, Peter

250

A measurement-based analysis of the interaction among MAC, network and application layers in wireless sensor networks  

E-Print Network [OSTI]

There have been a number of recent proposals for link and network-layer protocols in the sensor networking literature, each of which claims to be superior to other approaches. However, a proposal for a networking protocol ...

Malesci, Umberto

2005-01-01T23:59:59.000Z

251

1st Workshop on Dependability Issues in Wireless Ad Hoc Networks and Sensor Networks (DIWANS'04), Florence, Italy, Fault Tolerant Communication Topologies for Wireless Ad Hoc Networks  

E-Print Network [OSTI]

1st Workshop on Dependability Issues in Wireless Ad Hoc Networks and Sensor Networks (DIWANS'04), Florence, Italy, June 2004 Fault Tolerant Communication Topologies for Wireless Ad Hoc Networks Bernd, distributed algorithms, failure locality 1 Introduction Wireless sensor networks, mobile ad hoc networks

252

Soft Sensors for Process Monitoring of Complex Processes  

E-Print Network [OSTI]

modeling and those based on first principles based modeling (Lin et al. , 2005). There is a very large collection of literature involving the design and application of the former, including current textbooks and state of the art survey papers (Fortuna et... to Fortuna (Fortuna et al. , 2007), the main application of soft sensors for fault detection is still to compare the soft sensor prediction with an actual measurement and not perform fault detection on the soft sensor predictions themselves. A large...

Serpas, Mitchell Roy

2012-10-19T23:59:59.000Z

253

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

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

the cost of sensors by improving the technology-specifically, through the use of advanced manufacturing techniques, including printable electronics and additive roll-to-roll...

254

Performance monitoring in transparent optical networks using self-monitoring  

E-Print Network [OSTI]

the capital expenditure (CAPEX) and the operating expenditure (OPEX) of the network while enhancing its

Kolner, Brian H.

255

Ferry-Based Linear Wireless Sensor Networks  

E-Print Network [OSTI]

Applications of WSNsApplications of WSNs Applications for WSNs: · Weather monitoring · Security and tactical pipelines. Desalinated water. Saudi Arabia: 3,800 Km. Oil, Gas, and Water Pipeline UseOil, Gas, and Water

Wu, Jie

256

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

SciTech Connect (OSTI)

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

257

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

E-Print Network [OSTI]

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

Moya, David

2012-01-01T23:59:59.000Z

258

Online social network sensors for influenza outbreaks  

E-Print Network [OSTI]

Previous research has shown strong correlations between postings on the online social network Twitter where users complain of influenza-like symptoms, and clinical data on actual influenza rates. In addition, previous ...

Everett, Katie Elizabeth

2013-01-01T23:59:59.000Z

259

Sensor Relocation with Mobile Sensors:Sensor Relocation with Mobile Sensors: Design,Design,  

E-Print Network [OSTI]

Sensor Relocation with Mobile Sensors:Sensor Relocation with Mobile Sensors: Design of Freiburg #12;OverviewOverview · Sensor networks · mobile sensor · mobile robot · Mote · sensor relocation #12;Sensor networks · A wirless network . · Set of sensors. · Static Mote #12;Mobile sensor networks

Schindelhauer, Christian

260

Modeling and Analysis of Energy Harvesting Nodes in Body Sensor Networks  

E-Print Network [OSTI]

, or that the energy supply is monotonically decreasing with a fixed initial value. Since energy harvesting sensors canModeling and Analysis of Energy Harvesting Nodes in Body Sensor Networks Alireza Seyedi Department@ecse.rpi.edu Abstract--A Markov based unified model for an energy har- vesting node in a body sensor network

Sikdar, Biplab

Note: This page contains sample records for the topic "monitoring sensor network" 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 Energy-Efficient Communication Scheme in Wireless Cable Sensor Networks  

E-Print Network [OSTI]

An Energy-Efficient Communication Scheme in Wireless Cable Sensor Networks Xiao Chen Department of Computer Science U. S. Naval Postgraduate School Monterey, CA 93943 ncrowe@nps.edu Abstract and communication. Like wireless sensor networks with point sensors, energy-efficient communication is still

Rowe, Neil C.

262

Dynamic Framed-ALOHA for Energy-Constrained Wireless Sensor Networks with Energy Harvesting  

E-Print Network [OSTI]

to collect data from sensors without depleting their energy reserves. It is noted that such trade- offDynamic Framed-ALOHA for Energy-Constrained Wireless Sensor Networks with Energy Harvesting Fabio Framed-ALOHA (DFA) protocol is studied for wireless sensor networks with energy limitations and energy

Simeone, Osvaldo

263

EPIC-RoofNet: An Experimental Testbed for Solar-powered Wireless Sensor Networks  

E-Print Network [OSTI]

EPIC-RoofNet: An Experimental Testbed for Solar-powered Wireless Sensor Networks Amitangshu Pal through a shared folder. Keywords: Wireless sensor networks, solar harvesting, adaptive protocols experiments on solar-powered sensor nodes. Due to constraints in cost and size, the solar panels

Nasipuri, Asis

264

Wireless Sensor Networks Powered by Ambient Energy Harvesting (WSN-HEAP) Survey and  

E-Print Network [OSTI]

Wireless Sensor Networks Powered by Ambient Energy Harvesting (WSN-HEAP) ­ Survey and Challenges networks (WSNs) research has pre- dominantly assumed the use of a portable and limited energy source, viz. batteries, to power sensors. Without energy, a sensor is essentially useless and cannot contribute

Shihada, Basem

265

An adaptive approach to space-based picosatellite sensor networks Tughrul Arslan*a  

E-Print Network [OSTI]

hoc sensor networks, MEMS (micro-electro-mechanical systems) devices, low-power electronics, adaptiveAn adaptive approach to space-based picosatellite sensor networks Tughrul Arslan*a , Erfu Yanga operating systems, micro-spacecrafts, and micro-sensors have enabled the design and development of a high

Arslan, Tughrul

266

The integration of ad hoc sensor and cellular networks for multi-class data transmission  

E-Print Network [OSTI]

The integration of ad hoc sensor and cellular networks for multi-class data transmission Fei Hu a. On the other hand, large-scale Ad hoc Sensor Networks (ASN), when deployed among mobile patients who may carry different kinds of micro-sensors to measure ECG, blood pressure, basal temperature or other physiological

Kumar, Sunil

267

Application and state of development for remote chemical sensors in environmental monitoring: A literature review  

SciTech Connect (OSTI)

A study was performed on chemical sensor technology currently available and under development. The information was compiled into a format wherein information on the sensors is listed in a comparable manner. An introductory section is provided to illustrate the regulatory environment in which such sensor technology will be used. This information should allow corporations or federal agencies ready access to useful information for the potential licensing of sensor technology for commercial development or specific environmental monitoring operations. Although every attempt was made to identify as many chemical sensors as possible, we recognize that some may be missed inadvertently. The accuracy of the information provided by the various sources regarding the state of development for the various sensors was not verified. Judgments or opinions regarding the actual state of development or utility of these devices are not included in this report. However, we feel that this report accurately reflects the state of the art at the present time.

Schabron, J.F.; Niss, N.D.; Hart, B.K.

1991-09-01T23:59:59.000Z

268

Application and state of development for remote chemical sensors in environmental monitoring: A literature review  

SciTech Connect (OSTI)

A study was performed on chemical sensor technology currently available and under development. The information was compiled into a format wherein information on the sensors is listed in a comparable manner. As introductory section is provided to illustrate the regulatory environment in which such sensor technology will be used. This information should allow corporations or federal agencies ready access to useful information for the potential licensing of sensor technology for commercial development or specific environmental monitoring operations. Although every attempt was made to identify as many chemical sensors as possible, we recognize that some may be missed inadvertently. The accuracy of the information provided by the various sources regarding the state of development for the various sensors was not verified. Judgments or opinions regarding the actual state of development or utility of these devices are not included in this report. However, we feel that this report accurately reflects the state of the art at the present time.

Schabron, J.F.; Niss, N.D.; Hart, B.K.

1991-09-01T23:59:59.000Z

269

Distributed fiber optic intrusion sensor system for monitoring long perimeters  

E-Print Network [OSTI]

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

Juarez, Juan C.

2009-06-02T23:59:59.000Z

270

Automated Sensor Networks to Advance Ocean Science  

E-Print Network [OSTI]

satellite telecom- munications. A regional cabled observa- tory will "wire" a single region in the north- eastern Pacific Ocean with a high-speed optical and power grid. The coastal com- ponent will expand ocean- observing network in the Mid-Atlantic Bight waters (MAB, spanning offshore regions from

271

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

SciTech Connect (OSTI)

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

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

2005-09-01T23:59:59.000Z

272

-MAC: An Energy-Efficient Medium Access Control for Wireless Sensor Networks  

E-Print Network [OSTI]

-MAC: An Energy-Efficient Medium Access Control for Wireless Sensor Networks Andre Barroso, Utz: ¡ a.barroso u.roedig c.sreenan¢ @cs.ucc.ie Abstract-- For the long-term deployment of wireless sensor

Roedig, Utz

273

Wireless sensor network planning with application to UWB localization in GPS-denied environments  

E-Print Network [OSTI]

Wireless Sensor Networks (WSN) have received much attention in the past 5 years, and much progress has been made in designing hardware, communications protocols, routing, and sensor fusion algorithms. The planning and ...

Jourdan, Damien, 1978-

2006-01-01T23:59:59.000Z

274

DoppelLab: Tools for exploring and harnessing multimodal sensor network data  

E-Print Network [OSTI]

We present DoppelLab, an immersive sensor data browser built on a 3-d game engine. DoppelLab unifies independent sensor networks and data sources within the spatial framework of a building. Animated visualizations and ...

Dublon, Gershon

275

E-Print Network 3.0 - array geo-heat-flow sensor Sample Search...  

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

State University University Park, PA 16802-6106 wlee@cse.psu.edu 1 Mobile Sensor... Networks With the advent of low-power micro-sensors, actuators, embedded processors, and...

276

Energy-Efficient Multiple Routing Trees for Aggregate Query Evaluation in Sensor Networks  

E-Print Network [OSTI]

Energy-Efficient Multiple Routing Trees for Aggregate Query Evaluation in Sensor Networks Yuzhen is of paramount importance. Energy-efficient routing trees built for in-network pro- cessing play a central role multiple routing trees in sensor networks for the evaluation of a class of aggre- gate queries including

Liang, Weifa

277

On Minimum Delay Duty-Cycling Protocol in Sustainable Sensor Network  

E-Print Network [OSTI]

by other energy sources such as solar power. Due to the varying environment conditions, the energy supply networks, solar powered, duty- cycle, submodular. I. INTRODUCTION The wireless sensor network (WSN over time. To support those long-term applications, sustainable sensor networks, which harvest energy

Wu, Jie

278

Stochastic Sensor Scheduling with Application to Networked Control Farhad Farokhi and Karl H. Johansson  

E-Print Network [OSTI]

Stochastic Sensor Scheduling with Application to Networked Control Farhad Farokhi and Karl H. Johansson Abstract-- We consider stochastic sensor scheduling with application to networked control systems) among the control loops. We apply this scheduling policy to a networked control system composed

Johansson, Karl Henrik

279

Synchronous Ultra-Wide Band Wireless Sensors Networks for oil and gas exploration  

E-Print Network [OSTI]

Synchronous Ultra-Wide Band Wireless Sensors Networks for oil and gas exploration Stefano Savazzi1 of new oil and gas reservoir. Seismic exploration requires a large number (500 Ă· 2000 nodes, MAC and network layer to develop wireless sensors networks tailored for oil (and gas) exploration

Savazzi, Stefano

280

E-Print Network 3.0 - area monitoring network Sample Search Results  

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

Computer Technologies and Information Sciences 11 Call for Articles for IEEE Computer Ad Hoc Networking Summary: , hospital, battle eld, rescue, and monitor- ing scenarios....

Note: This page contains sample records for the topic "monitoring sensor network" 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

E-Print Network 3.0 - air monitoring network Sample Search Results  

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

Trent University Environmental and Resource Studies Program Summary: Chemistry 2 Sep. 22 Air Pollution Overview The Atmosphere Air Quality Monitoring Networks 1 3 Sep. 29... at...

282

Wireless, automated monitoring for potential landslide hazards  

E-Print Network [OSTI]

This thesis describes research efforts toward the development of a wireless sensor node, which can be employed in durable and expandable wireless sensor networks for remote monitoring of soil conditions in areas conducive to slope stability failures...

Garich, Evan Andrew

2007-09-17T23:59:59.000Z

283

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

SciTech Connect (OSTI)

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

Serrato, M. G.

2013-09-27T23:59:59.000Z

284

E-Print Network 3.0 - acoustic sensor development Sample Search...  

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

12.716123 Summary: of health monitoring technologies have resulted in development of micro-dimensional sensors that can... -reinforced polymers. Notwithstanding the...

285

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

SciTech Connect (OSTI)

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

Gong, Xun; An, Linan; Xu, Chengying

2013-06-30T23:59:59.000Z

286

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

SciTech Connect (OSTI)

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

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

1989-03-01T23:59:59.000Z

287

A Taxonomy of Wireless Micro-Sensor Network Models Sameer Tilak Nael B. Abu-Ghazaleh Wendi Heinzelman  

E-Print Network [OSTI]

A Taxonomy of Wireless Micro-Sensor Network Models ÂŁ Sameer Tilak Nael B. Abu-Ghazaleh Wendi wireless networks. This paper examines this emerging field to clas- sify wireless micro-sensor networks to classify wireless micro-sensor networks. In partic- ular, we classify the aspects of wireless micro

Han, Richard Y.

288

Maintenance Awareness in Wireless Sensor Networks Andre Barroso, Utz Roedig and Cormac J. Sreenan  

E-Print Network [OSTI]

Maintenance Awareness in Wireless Sensor Networks Andre Barroso, Utz Roedig and Cormac J. Sreenan Mobile & Internet Systems Laboratory (MISL), University College Cork, Ireland Email: {a.barroso, u

Roedig, Utz

289

Maintenance Efficient Routing in Wireless Sensor Networks Andre Barroso, Utz Roedig and Cormac Sreenan  

E-Print Network [OSTI]

Maintenance Efficient Routing in Wireless Sensor Networks Andre Barroso, Utz Roedig and Cormac Sreenan Mobile & Internet Systems Laboratory, University College Cork, Ireland Email: {a.barroso u

Sreenan, Cormac J.

290

The impact of Wireless Sensor Networks on the society, industry and everyday life by is forecasted  

E-Print Network [OSTI]

, senso- rics, antennas, wireless communication, microwave technologies, energy harvesting, computer and generate energy, · make sensor networks self-configuring, robust and maintenance-free up to 10 years

Flener, Pierre

291

E-Print Network 3.0 - array image sensor Sample Search Results  

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

London Collection: Engineering 5 New Communication Paradigms for Very Large Scale Sensor networks: Virtual Radar Imaging and Distributed Beamforming Summary: New Communication...

292

E-Print Network 3.0 - ad hoc sensor Sample Search Results  

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

Engineering ; Computer Technologies and Information Sciences 60 A Taxonomy of Wireless Micro-Sensor Network Models Sameer Tilak Summary: to configure, maintain and optimize...

293

E-Print Network 3.0 - automotive vehicle sensors Sample Search...  

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

mission-critical tasks, automotive CPSes pose stringent requirements... automotive sensor networks. In IEEE ... Source: Zhang, Hongwei - Department of Computer Science, Wayne State...

294

E-Print Network 3.0 - angular rate sensor Sample Search Results  

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

Irvine, CA, USA ABSTRACT We introduce a technology for robust and low maintenance sensor networks... capable of detecting micro-g accel- erations in a wide frequency bandwidth...

295

Uncertainty Quantification Techniques for Sensor Calibration Monitoring in Nuclear Power Plants  

SciTech Connect (OSTI)

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

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

2014-04-30T23:59:59.000Z

296

Uncertainty Quantification Techniques for Sensor Calibration Monitoring in Nuclear Power Plants  

SciTech Connect (OSTI)

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

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

2013-09-01T23:59:59.000Z

297

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

SciTech Connect (OSTI)

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

Not Available

1994-04-01T23:59:59.000Z

298

440 IEEE SENSORS JOURNAL, VOL. 7, NO. 3, MARCH 2007 On-Chip Capacitance Sensing for Cell Monitoring  

E-Print Network [OSTI]

440 IEEE SENSORS JOURNAL, VOL. 7, NO. 3, MARCH 2007 On-Chip Capacitance Sensing for Cell Monitoring is an indication of both the interaction between cells and substrate and cell health. The capacitance sensor uses the principle of charge sharing and translates sensed capacitance values to output voltages. The sensor chip has

Maryland at College Park, University of

299

On Energy for Progressive and Consensus Estimation in Multihop Sensor Networks  

E-Print Network [OSTI]

energy and power plan- ning, multihop sensor networks, network with routing tree,with routing tree. Using the exact energy model and takingenergy planning algorithm for a progressive estimation method which exploits routing tree

Huang, Yi; Hua, Yingbo

2011-01-01T23:59:59.000Z

300

CPS : Small : Dynamically Managing the Real-time Fabric of a Wireless Sensor-Actuator Network  

E-Print Network [OSTI]

CPS : Small : Dynamically Managing the Real-time Fabric of a Wireless Sensor-Actuator Network 1 as a multi-player game between applications (users) that is essentially a network utility maximization (NUM

Lemmon, Michael

Note: This page contains sample records for the topic "monitoring sensor network" 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

Performance Control in Wireless Sensor Networks C. J. Sreenan, U. Roedig, J. Brown, C. A. Boano, A. Dunkels, Z. He, T. Voigt, V. Vassiliou, J. Sa Silva  

E-Print Network [OSTI]

scenarios within the GALP oil refinery where the system will be deployed and some initial technical insights, a refinery in Portugal, where performance is critical. Network with Deployed Sensor Controlled Performance monitoring and debugging Integration with IT Systems Fig. 1. The GINSENG approach. Fig. 2. GALP oil refinery

Roedig, Utz

302

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

E-Print Network [OSTI]

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

David Moya; Iván Vila

2012-03-01T23:59:59.000Z

303

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

E-Print Network [OSTI]

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

Paris-Sud XI, Université de

304

CHIPLESS PASSIVE SENSOR FOR WIRELESS MONITORING OF HIGH RADIATION DOSES IN NUCLEAR INFRASTRUCTURES  

E-Print Network [OSTI]

CHIPLESS PASSIVE SENSOR FOR WIRELESS MONITORING OF HIGH RADIATION DOSES IN NUCLEAR INFRASTRUCTURES for Nuclear Research, Otwock, Poland 4 Wroclaw University of Technology, Wroclaw, Poland 5 TRAD, BP 47471, Labège, France ppons@laas.fr ABSTRACT The dosimetry is one of the crucial techniques that are needed

Paris-Sud XI, Université de

305

336 Florida Entomologist 84(3) September 2001 AN OPTOELECTRONIC SENSOR FOR MONITORING  

E-Print Network [OSTI]

336 Florida Entomologist 84(3) September 2001 AN OPTOELECTRONIC SENSOR FOR MONITORING SMALL optoelectronic system for measuring rapid movements in one dimension, such as the protraction of an insect leg, optoelectronic photodetector, cricket acoustic startle response RESUMEN Detectores Ăłpticos de movimiento han sido

Hoy, Ronald R.

306

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

E-Print Network [OSTI]

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

Kotz, David

307

LAMB-WAVE EMBEDDED NDE WITH PIEZOELECTRIC WAFER ACTIVE SENSORS FOR STRUCTURAL HEALTH MONITORING OF  

E-Print Network [OSTI]

LAMB-WAVE EMBEDDED NDE WITH PIEZOELECTRIC WAFER ACTIVE SENSORS FOR STRUCTURAL HEALTH MONITORING waves and enable the development of embedded NDE concepts. This paper will present two embedded NDE Embedded nondestructive evaluation (E-NDE) is an emerging technology that aims at performing NDE testing

Giurgiutiu, Victor

308

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

E-Print Network [OSTI]

and control of cell culture processes is required. To do this measurement, multiple sensors must be implemented to monitor various parameters of the cell culture medium. The model analytes used in this study were pH and dissolved oxygen which have...

Lee, Seung Joon

2009-05-15T23:59:59.000Z

309

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

E-Print Network [OSTI]

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

Kavcic, Aleksandar

310

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

E-Print Network [OSTI]

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

Moritz, Werner

311

A Low Complexity High Capacity ECG Signal Watermark for Wearable Sensor-net Health Monitoring System  

E-Print Network [OSTI]

A Low Complexity High Capacity ECG Signal Watermark for Wearable Sensor-net Health Monitoring, RMIT University, Melbourne, Australia Abstract In Wireless telecardiology applications, an ECG signal signal collision attacks). ECG data transmission can be more robustly tied to either patient identity

van Schyndel, Ron

312

Impact of Network Density on Data Aggregation in Wireless Sensor Networks Chalermek Intanagonwiwat  

E-Print Network [OSTI]

message. Energy-wise, opportunistic aggrega- tion on a low-latency tree is not optimal because data may) to improve path sharing for more energy savings. We have implemented this greedy-tree approach in ns-2 and we is essential for wireless sensor networks where energy resources are limited. In a previously proposed data

Heidemann, John

313

Particle Sensor for Diesel Combustion Monitoring | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l L d F SSalesOE0000652 Srivastava,Pacific1ofDepartmentb.Sensor for Diesel

314

Electrochemical NOxSensor for Monitoring Diesel Emissions | Department of  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeat PumpRecord ofESPC ENABLE: ECM SummaryandandElectrosynthesisDOEEnergy NOxSensor

315

Energy Efficiency of MIMO Transmission Strategies in Wireless Sensor Networks Huaiyu Dai, Liang Xiao, and Quan Zhou  

E-Print Network [OSTI]

Energy Efficiency of MIMO Transmission Strategies in Wireless Sensor Networks Huaiyu Dai, Liang in the link adaptation study. Keywords: Cooperative MIMO, Energy Efficiency, MIMO Transmission, Mobile Agent, Sensor Network, Spectral Efficiency, Virtual MIMO, Wideband Regime. #12;Energy Efficiency of MIMO

Dai, Huaiyu

316

Efficient Application Integration in IP-Based Sensor Networks Dogan Yazar, Adam Dunkels  

E-Print Network [OSTI]

fields of energy management for homes, offices, and the smart grid. Many existing sensor network deploy evaluation of our system and show that Web services are a viable mechanism for use in low-power sensor Protocols]: Applications General Terms Design, Experimentation, Measurement, Performance Keywords Sensor

317

Virtual Lock: A Smartphone Application for Personal Surveillance Using Camera Sensor Networks  

E-Print Network [OSTI]

. A major application of camera sensor networks is surveil- lance and security. Tim Ellis [9] implemented infrared (PIR) sensors to supple- ment algorithms of detecting and tracking humans which can sometimes cause false alarms. By combining PIR sensors with those algorithms, they could avoid false alarms

318

Target Tracking with Limited Sensing Range in Autonomous Mobile Sensor Networks  

E-Print Network [OSTI]

, security surveillance [1], [2]. Target tracking is a critical problem in the field of sensor networks, passive infrared (PIR) sensors can detect the 1The work is partially supported by NSFC under Grants, in this paper, we consider the mobile sensors equipped with both PIR module and ultrasonic sensing module

Boyer, Edmond

319

A Bayesian Network for Autonomous Sensor Control during Polar Ice Sheet Measurements  

E-Print Network [OSTI]

of environmental and sensor- related factors. The PRISM sensors are placed on autonomous robotic vehicles ("roversA Bayesian Network for Autonomous Sensor Control during Polar Ice Sheet Measurements Sudha sheets. An important component of PRISM is an intelligent, autonomous Synthetic Aperture Radar that can

Kansas, University of

320

Node-Replacement Policies to Maintain Threshold-Coverage in Wireless Sensor Networks  

E-Print Network [OSTI]

1 Node-Replacement Policies to Maintain Threshold-Coverage in Wireless Sensor Networks Sachin the sensing coverage falls below the minimum threshold-coverage. We develop three node-replacement policies failed sensor node for replacement. Based on different performance criteria, every time a sensor node

Vokkarane, Vinod M.

Note: This page contains sample records for the topic "monitoring sensor network" 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

Modeling the Performance and the Energy Usage of Wireless Sensor Networks by Retrial Queueing Systems  

E-Print Network [OSTI]

Modeling the Performance and the Energy Usage of Wireless Sensor Networks by Retrial Queueing and the energy usage of the sensor network. Two operations are compared. In the first case only the event driven requests can initiate reaching the radio trans- mission (RF) unit. Time driven requests have to wait

Sztrik, János

322

Bounds on the Energy Consumption of Routings in Wireless Sensor Networks  

E-Print Network [OSTI]

Bounds on the Energy Consumption of Routings in Wireless Sensor Networks Juan Alonso1 , Adam. Energy is one of the most important resources in wireless sensor networks. We use an idealized mathematical model to study the impact of routing on energy consumption. We find explicit bounds on the minimal

Voigt, Thiemo

323

On the Performance of Lossy Compression Schemes for Energy Constrained Sensor Networking  

E-Print Network [OSTI]

A On the Performance of Lossy Compression Schemes for Energy Constrained Sensor Networking DAVIDE of Padova Lossy temporal compression is key for energy constrained wireless sensor networks (WSN), where complexity and energy consumption. Specifically, we first carry out a performance evaluation of existing

Rossi, Michele

324

CORD: Energy-efficient Reliable Bulk Data Dissemination in Sensor Networks  

E-Print Network [OSTI]

and outdoor sensor network testbed and via extensive simulations. Our results show that in comparisonCORD: Energy-efficient Reliable Bulk Data Dissemination in Sensor Networks Leijun Huang Sanjeev is to minimize energy consumption. To achieve its goals CORD employs a two phase approach in which the object

Setia, Sanjeev

325

Energy-efficient geographic multicast routing for Sensor and Actuator Networks  

E-Print Network [OSTI]

progress metric and it is specially designed to minimize the total energy used by the multicast tree. GMREEEnergy-efficient geographic multicast routing for Sensor and Actuator Networks Juan A. Sanchez a and Actuator Networks (SANET). Sensors have very limited resources in terms of energy, band- width

Stojmenovic, Ivan

326

Modeling spatially-correlated sensor network data Apoorva Jindal, Konstantinos Psounis  

E-Print Network [OSTI]

Modeling spatially-correlated sensor network data Apoorva Jindal, Konstantinos Psounis Department to synthetically generate large traces of spatially correlated data representing a wide range of conditions, it is expected that a high degree of spatial correlation will exist in the sensor network data. The presence

327

Analysis of Power-Aware Buffering Schemes in Wireless Sensor Networks  

E-Print Network [OSTI]

problem in battery-powered sensor networks, focusing on the fixed-size and fixed-interval buffering parameters of radio module and memory bank, data arrival rate, and data-size variation, thereby providing operational requirement of battery-powered sensor networks [

Chen, Shigang

328

A Cross-Layer Design for Decentralized Detection in Tree Sensor Networks  

E-Print Network [OSTI]

for sensors is developed. For tree networks, energy-efficient routing for signal detectioA Cross-Layer Design for Decentralized Detection in Tree Sensor Networks Ashraf Tantawy, Xenofon Koutsoukos, and Gautam Biswas Institute for Software Integrated Systems (ISIS) Department of Electrical

Koutsoukos, Xenofon D.

329

Impact of Mobile Node Density on Detection Performance Measures in a Hybrid Sensor Network  

E-Print Network [OSTI]

Impact of Mobile Node Density on Detection Performance Measures in a Hybrid Sensor Network}@ece.unm.edu Abstract--We investigate the impact of mobile node density on several detection performance measures for stationary target detection by a hybrid sensor network consisting of both static and mobile nodes

Jayaweera, Sudharman K.

330

Test Plan of the Anticipatory Wirelss Sensor Network for the Critical Energy Infrastructure  

SciTech Connect (OSTI)

The test plan for the performance of the Anticipatory Wireless Sensor Network (A-WSN) is presented. The results of the test campaigns will be obtained after actual measurements are taken in the field with the Wireless Sensor Network developed by The Innovation Center-Eaton Corp., and the Anticipatory algorithms developed by ORNL.

Carlos Rentel

2006-09-01T23:59:59.000Z

331

Energy-aware 3-level coding and control co-design for sensor network systems  

E-Print Network [OSTI]

Energy-aware 3-level coding and control co-design for sensor network systems CARLOS CANUDAS energy consumption (energy-aware). To this aim, we propose to use a coding strategy with the ability that this coding algorithm preserves closed loop stability. Index Terms-- Control of sensor networks, energy-aware

Paris-Sud XI, Université de

332

Energy-Aware Scheduling with Quality of Surveillance Guarantee in Wireless Sensor Networks Technical Report  

E-Print Network [OSTI]

Energy-Aware Scheduling with Quality of Surveillance Guarantee in Wireless Sensor Networks 200 Union Street SE Minneapolis, MN 55455-0159 USA TR 06-021 Energy-Aware Scheduling with Quality #12;#12;1 Energy-Aware Scheduling with Quality of Surveillance Guarantee in Wireless Sensor Networks

Jeong, Jaehoon "Paul"

333

ENERGY-AWARE DATA-CENTRIC MAC FOR APPLICATION-SPECIFIC SENSOR NETWORKS  

E-Print Network [OSTI]

ENERGY-AWARE DATA-CENTRIC MAC FOR APPLICATION-SPECIFIC SENSOR NETWORKS Qing Zhao University an energy-aware data-centric MAC protocol for application-specific large sensor networks. Referred detection, tracking, and estimation. 1.2. Energy-Aware Data-Centric MAC We consider the problem

Islam, M. Saif

334

The Need for Cooperation and Relaying in Short-Range High Path Loss Sensor Networks  

E-Print Network [OSTI]

a propagation model and a radio model for communication along the human body. Using these models, energyThe Need for Cooperation and Relaying in Short-Range High Path Loss Sensor Networks Bart Braem--This paper focuses on the energy efficiency of communication in small-scale sensor networks experiencing high

335

Adaptive Control of Duty Cycling in Energy-Harvesting Wireless Sensor Networks  

E-Print Network [OSTI]

Adaptive Control of Duty Cycling in Energy-Harvesting Wireless Sensor Networks Christopher M wireless sensor network deployments are using harvested environmental energy to extend system lifetime. Because the temporal profiles of such energy sources exhibit great variability due to dynamic weather

Massachusetts at Amherst, University of

336

Energy Efficient Transmission Strategies for Body Sensor Networks with Energy Harvesting  

E-Print Network [OSTI]

1 Energy Efficient Transmission Strategies for Body Sensor Networks with Energy Harvesting Alireza of developing energy efficient transmission strategies for Body Sensor Networks (BSNs) with energy harvesting [1]. A major hurdle for the wide adoption of BSN technology is the energy supply [2]. Current battery

Sikdar, Biplab

337

Energy Efficiency of Symmetric Key Cryptographic Algorithms in Wireless Sensor Networks  

E-Print Network [OSTI]

Energy Efficiency of Symmetric Key Cryptographic Algorithms in Wireless Sensor Networks Xueying-- In this paper, we examine the energy efficiency of symmetric key cryptographic algorithms applied in wireless energy efficiency with a level of security suitable for wireless sensor networks. Keywords - wireless

Heys, Howard

338

Design and Analysis of Micro-Solar Power Systems for Wireless Sensor Networks  

E-Print Network [OSTI]

Design and Analysis of Micro-Solar Power Systems for Wireless Sensor Networks Jaein Jeong, Xiaofan,fxjiang,culler}@eecs.berkeley.edu Abstract-- Wireless Sensor Networks are fundamentally limited by their energy storage resources and the power they obtain from their environment. Several micro-solar powered designs have been developed

Culler, David E.

339

Design and Analysis of Micro-Solar Power Systems for Wireless Sensor Networks  

E-Print Network [OSTI]

Design and Analysis of Micro-Solar Power Systems for Wireless Sensor Networks Jaein Jeong Xiaofan or to redistribute to lists, requires prior specific permission. #12;Design and Analysis of Micro-Solar Power Systems for Wireless Sensor Networks Jaein Jeong, Xiaofan Jiang and David Culler EECS Department, University

California at Berkeley, University of

340

Routing Techniques in Wireless Sensor Networks Abbas Jamalipour, PhD; Fellow IEEE, Fellow IEAust  

E-Print Network [OSTI]

Routing Techniques in Wireless Sensor Networks Abbas Jamalipour, PhD; Fellow IEEE, Fellow IEAust and micro electro-mechanical systems (MEMS) are influencing the progression towards the smart dust era, industrial and home automation wireless sensor networks (WSN) will have a significant impact. Accordingly

Note: This page contains sample records for the topic "monitoring sensor network" 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

Energy Efficient Transmission Strategies for Body Sensor Networks with Energy Harvesting  

E-Print Network [OSTI]

Energy Efficient Transmission Strategies for Body Sensor Networks with Energy Harvesting Alireza for Body Sensor Networks (BSNs) with energy harvesting capabilities. It is assumed that two transmission tracking [4]. One major hurdle for the wide adoption of the BSN technology is the energy supply [11

Sikdar, Biplab

342

State-of-the-Art in Protocol Research for Underwater Acoustic Sensor Networks  

E-Print Network [OSTI]

to observe and predict the ocean. Unmanned or Autonomous Underwater Vehi- cles (UUVs, AUVs), equipped (UW-ASNs) will consist of sensors and vehicles deployed underwater and networked via acoustic linksState-of-the-Art in Protocol Research for Underwater Acoustic Sensor Networks Ian F. Akyildiz

Pompili, Dario

343

Efficient Energy Management and Data Recovery in Sensor Networks using Latent Variables Based Tensor  

E-Print Network [OSTI]

Efficient Energy Management and Data Recovery in Sensor Networks using Latent Variables Based factor in a successful sensor network deployment is finding a good balance between maximizing the number of measurements taken (to maintain a good sampling rate) and minimizing the overall energy consumption (to extend

Simunic, Tajana

344

Utilizing Solar Power in Wireless Sensor Networks Thiemo Voigt, Hartmut Ritter, Jochen Schiller  

E-Print Network [OSTI]

Utilizing Solar Power in Wireless Sensor Networks Thiemo Voigt, Hartmut Ritter, Jochen Schiller propose to utilize solar power in wireless sensor networks, establishing a topology where ­ changing over propose and evaluate two protocols that perform solar- aware routing. The presented simulation results

Voigt, Thiemo

345

PLC sensor IPv6 networking interoperabe with WSN Cedric Chauvenet, Pierre-Emmanuel Goudet, Mathieu Pouillot  

E-Print Network [OSTI]

PLC sensor IPv6 networking interoperabe with WSN Cedric Chauvenet, Pierre-Emmanuel Goudet, Mathieu the possibility of using IPv6 for sensor networks connected through powerline communication (PLC) non on PLC medium. Following this standard interface, we demonstrate the possibility to carry out data on PLC

Paris-Sud XI, Université de

346

Proposed Solution:Proposed Solution: The Autonomous Networked Aquatic Microbial Observing SystemThe Autonomous Networked Aquatic Microbial Observing System Networked Aquatic Microbial Observing Systems: an overviewNetworked Aquatic Microbial Observing Sys  

E-Print Network [OSTI]

Proposed Solution:Proposed Solution: The Autonomous Networked Aquatic Microbial Observing SystemThe Autonomous Networked Aquatic Microbial Observing System Networked Aquatic Microbial Observing Systems Ocean Research Goals · Development of autonomous networks of heterogeneous sensors to monitor and sample

Smith, Ryan N.

347

Dual sensitivity mode system for monitoring processes and sensors  

DOE Patents [OSTI]

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

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

2000-01-01T23:59:59.000Z

348

Expected k-coverage in wireless sensor networks Li-Hsing Yen *, Chang Wu Yu, Yang-Min Cheng  

E-Print Network [OSTI]

communications and micro-sensing MEMS technology has enabled the deployment of wireless sensor networksExpected k-coverage in wireless sensor networks Li-Hsing Yen *, Chang Wu Yu, Yang-Min Cheng 2005 Available online 24 August 2005 Abstract We are concerned with wireless sensor networks where n

Chen, Sheng-Wei

349

Energy Aware Self-Organizing Density Management in Wireless Sensor Networks  

E-Print Network [OSTI]

Energy consumption is the most important factor that determines sensor node lifetime. The optimization of wireless sensor network lifetime targets not only the reduction of energy consumption of a single sensor node but also the extension of the entire network lifetime. We propose a simple and adaptive energy-conserving topology management scheme, called SAND (Self-Organizing Active Node Density). SAND is fully decentralized and relies on a distributed probing approach and on the redundancy resolution of sensors for energy optimizations, while preserving the data forwarding and sensing capabilities of the network. We present the SAND's algorithm, its analysis of convergence, and simulation results. Simulation results show that, though slightly increasing path lengths from sensor to sink nodes, the proposed scheme improves significantly the network lifetime for different neighborhood densities degrees, while preserving both sensing and routing fidelity.

Merrer, Erwan Le; Kermarrec, Anne-Marie; Viana, Aline; Bertier, Marin

2008-01-01T23:59:59.000Z

350

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

SciTech Connect (OSTI)

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

VonDrasek, William; Melsio-Pubill, Anna

2006-05-30T23:59:59.000Z

351

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

SciTech Connect (OSTI)

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

Pendse, H.P.

1992-10-01T23:59:59.000Z

352

Non-conventional passive sensors for monitoring tritium on surfaces  

SciTech Connect (OSTI)

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

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

1995-06-01T23:59:59.000Z

353

IEEE ICC 2014 -Ad-hoc and Sensor Networking Symposium 978-1-4799-2003-7/14/$31.00 2014 IEEE 305  

E-Print Network [OSTI]

IEEE ICC 2014 - Ad-hoc and Sensor Networking Symposium 978-1-4799-2003-7/14/$31.00 ©2014 IEEE 305 ICC 2014 - Ad-hoc and Sensor Networking Symposium 306 #12;IEEE ICC 2014 - Ad-hoc and Sensor Networking Symposium 307 #12;IEEE ICC 2014 - Ad-hoc and Sensor Networking Symposium 308 #12;IEEE ICC 2014 - Ad-hoc

Bahk, Saewoong

354

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

SciTech Connect (OSTI)

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

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

1995-12-31T23:59:59.000Z

355

Generating UAV Communication Networks for Monitoring and Surveillance  

E-Print Network [OSTI]

Generating UAV Communication Networks for Monitoring and Surveillance Per-Magnus Olsson, Jonas, especially when smaller UAVs are used. Both problems can be solved to creating relay chains for surveillance different trade-offs between the number of UAVs in the chain and the chain's cost. We also show new results

Doherty, Patrick

356

Neural Networks ensemble for quality monitoring , M. Noyel1  

E-Print Network [OSTI]

tools of Total Quality Management (TQM). The American Production and Inventory Control Society (APICS) defines Total Quality Management as "A management approach to long-term success through customerNeural Networks ensemble for quality monitoring P. Thomas1 , M. Noyel1 , M.C. Suhner1 , P

Boyer, Edmond

357

An Underwater Robotic Network for Monitoring Nuclear Waste Storage Pools  

E-Print Network [OSTI]

An Underwater Robotic Network for Monitoring Nuclear Waste Storage Pools Sarfraz Nawaz1 , Muzammil Manchester M60 1QD simon.watson@postgrad.manchester.ac.uk peter.n.green@manchester.ac.uk Abstract. Nuclear to build maps of their internal structure which can then be used for waste removal and pool decommissioning

Jeavons, Peter

358

A Scalable Model for Energy Load Balancing in Large-scale Sensor Networks  

E-Print Network [OSTI]

A Scalable Model for Energy Load Balancing in Large-scale Sensor Networks Seung Jun Baek we consider how one might achieve more balanced energy burdens across the network by spreading sinks change their locations to balance the energy burdens incurred accross the network nodes [1

de Veciana, Gustavo

359

Energy Evaluation of PMCMTP for Large-Scale Wireless Sensor Networks  

E-Print Network [OSTI]

slots inside each Personal Area Network (PAN)), · Energy balancing and saving to prolong networkEnergy Evaluation of PMCMTP for Large-Scale Wireless Sensor Networks Jamila Ben Slimane, Ye-Qiong Song, Anis Koub^aa§¶ and Mounir Frikha Sup'Com-MEDIATRON, City of Communication Technologies, 2083

Paris-Sud XI, Université de

360

Rendezvous Design Algorithms for Wireless Sensor Networks with a Mobile Base Station  

E-Print Network [OSTI]

of controlled mobil- ity and in-network data caching and can achieve a desirable balance between network energy; Tian Wang; Weijia Jia; Minming Li Deptment of Computer Science, City University of Hong Kong 83 Tat that significant energy saving can be achieved in wireless sensor networks with a mobile base station that collects

Note: This page contains sample records for the topic "monitoring sensor network" 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

Modular Topology Control and Energy Model for Wireless Ad Hoc Sensor Networks  

E-Print Network [OSTI]

Modular Topology Control and Energy Model for Wireless Ad Hoc Sensor Networks Niranjan in a harsh terrain typically are battery operated and, therefore, require energy efficient network protocols. In order to ease the analysis of the energy usage of proposed network protocols, this paper proposes

Jay Yang, Shanchieh

362

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

363

Historically Black Colleges and Universities (HBCU) Solar Radiation Monitoring Network  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

The Historically Black Colleges and Universities (HBCU) Solar Radiation Monitoring Network operated from November 1985 through December 1996. The six-station network provided 5-minute averaged measurements of global and diffuse horizontal solar irradiance. The data were processed at the National Renewable Energy Laboratory (NREL) to improve the assessment of the solar radiation resources in the southeastern United States. Three of the stations also measured the direct-normal solar irradiance with a pyrheliometer mounted in an automatic sun tracker. All data are archived in the Standard Broadband Format (SBF) with quality-assessment indicators. Monthly data summaries and plots are also available for each month. In January 1997 the HBCU sites became part of the CONFRRM solar monitoring network.

364

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

SciTech Connect (OSTI)

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

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

2010-05-28T23:59:59.000Z

365

ELEVATED TEMPERATURE SENSORS FOR ON-LINE CRITICAL EQUIPMENT HEALTH MONITORING  

SciTech Connect (OSTI)

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

James Sebastian

2005-03-01T23:59:59.000Z

366

Elevated Temperature Sensors for On-Line Critical Equipment Health Monitoring  

SciTech Connect (OSTI)

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

James Sebastian

2006-03-31T23:59:59.000Z

367

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

SciTech Connect (OSTI)

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

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

2010-07-01T23:59:59.000Z

368

Optimal Cluster Association in Two-Tiered Wireless Sensor Networks  

E-Print Network [OSTI]

) structural monitoring and emergency rescue, i.e., structural health monitoring of the Golden Gate Bridge

Li, Xiang-Yang

369

Energy Aware Node Selection for Cluster-based Data Accuracy Estimation in Wireless Sensor Networks  

E-Print Network [OSTI]

The main objective of this paper is to reduce the number of sensor nodes by estimating a trade off between data accuracy and energy consumption for selecting nodes in probabilistic approach in distributed networks. Design Procedure/Approach: Observed data are highly correlated among sensor nodes in the spatial domain due to deployment of high density of sensor nodes. These sensor nodes form non-overlapping distributed clusters due to high data correlation among them. We develop a probabilistic model for each distributed cluster to perform data accuracy and energy consumption model in the network. Finally we find a trade off between data accuracy and energy consumption model to select an optimal number of sensor nodes in each distributed cluster. We also compare the performance for our data accuracy estimation model with information accuracy model for each distributed cluster in the network. Practical Implementation: Measuring temperature in physical environment and measuring moisture content in agricultural f...

Karjee, Jyotirmoy

2011-01-01T23:59:59.000Z

370

Use of autoassociative neural networks for sensor diagnostics  

E-Print Network [OSTI]

faulty sensors. E-AANN uses a secondary optimization process to identify and reconstruct sensor faults. Two common types of sensor faults are investigated, drift error and shift or offset error. In the case of drift error, the sensor error occurs...

Najafi, Massieh

2005-02-17T23:59:59.000Z

371

Demo Abstract: A Storage-centric Camera Sensor Network Gaurav Mathur, Paul Chukiu, Peter Desnoyers, Deepak Ganesan, Prashant Shenoy  

E-Print Network [OSTI]

-time of the battery and consequently, the life of the storage-centric camera sensor network. Categories and SubjectDemo Abstract: A Storage-centric Camera Sensor Network Gaurav Mathur, Paul Chukiu, Peter Desnoyers-efficiency and storage capacity of new-generation NAND flash memory makes a compelling case for storage-centric sensor

Shenoy, Prashant

372

THE DEVELOPMENT OF A NOVEL MINIATURISED MODULAR PLATFORM FOR WIRELESS SENSOR NETWORKS  

E-Print Network [OSTI]

, A. Barroso2 , S. Bellis1 , J. Benson2 , U. Roedig2 , K. Delaney1 , C. Sreenan2 1 NMRC ­ {brendan.barroso|j.benson|u.roedig|c.sreenan}@cs.ucc.ie ABSTRACT Wireless sensor networks are collections

Roedig, Utz

373

Scalable Coordination for Wireless Sensor Networks: Self-Configuring Localization Systems  

E-Print Network [OSTI]

networks: tuning density to trade operational quality against lifetime; using multi- ple sensor modalities, water, soil, chemistry); condition based maintenance; smart spaces; military surveillance; preci- sion or urban locations). The above requirements impose substantial physical constraints at both the node

Heidemann, John

374

An energy-efficient communication system for ad hoc wireless and sensor networks  

E-Print Network [OSTI]

Existing ad hoc wireless and sensor network systems often trade off energy against performance. As such, it is hard to find a single deployable system that supports high data rates while maintaining energy-efficient ...

Tetteh, William Nii Adjetey

2007-01-01T23:59:59.000Z

375

T-Lohi: A New Class of MAC Protocols for Underwater Acoustic Sensor Networks  

E-Print Network [OSTI]

energy-efficient design an important goal. While some researchers have suggested many underwater networks and consumes no energy from the sensor system. Compared to radio commu- nications, energy-efficient design

Heidemann, John

376

Aggregation in sensor networks: An energy-accuracy trade-off  

E-Print Network [OSTI]

Sensor Networks: An Energy- Accuracy Trade-off Athanassiosacknowledge the energy/accuracy trade-off present whenalgorithm exploits the energy-accuracy trade-off in WASNs to

A. Boulis; S. Ganeriwal; M. B. Srivastava

2003-01-01T23:59:59.000Z

377

CERIAS Tech Report 2007-04 SECURITY IN WIRELESS SENSOR NETWORKS -A LAYER BASED CLASSIFICATION  

E-Print Network [OSTI]

and communicational capabilities. Secondly, there is an additional risk of physical attacks such as node captureCERIAS Tech Report 2007-04 SECURITY IN WIRELESS SENSOR NETWORKS - A LAYER BASED CLASSIFICATION

Liblit, Ben

378

Energy efficient control of polychromatic solid state lighting using a sensor network  

E-Print Network [OSTI]

Motivated by opportunities in smart lighting, energy efficiency, and ubiquitous sensing, we present the design of polychromatic solid-state lighting controlled using a sensor network. We developed both a spectrally tunable ...

Paradiso, Joseph A.

379

A Simulation Model for Self-organised Management of Sensor/Actuator Networks  

E-Print Network [OSTI]

A Simulation Model for Self-organised Management of Sensor/Actuator Networks Thomas Halva Labella by the behaviour observed in animal colonies. In this paper, we introduce our ongoing work (the simulation model

Breu, Ruth

380

Information Agents for Pervasive Sensor Networks A. Rogers, S. D. Ramchurn and N. R. Jennings  

E-Print Network [OSTI]

standard web interfaces. Such open systems have many applications in- cluding traffic and pollution such that sensors can advertise their existence and capabilities to po- tential users of the network. However, more

Roberts, Stephen

Note: This page contains sample records for the topic "monitoring sensor network" 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

Data Storage Placement in Sensor Networks shengbo@cs.wm.edu  

E-Print Network [OSTI]

in cost, some special nodes with much larger permanent storage (e.g., flash memory) and more battery powerData Storage Placement in Sensor Networks Bo Sheng shengbo@cs.wm.edu Qun Li liqun@cs.wm.edu Weizhen-8795, USA ABSTRACT Data storage has become an important issue in sensor net- works as a large amount

Mao, Weizhen

382

An Integral Flow-Based Energy-Efficient Routing Algorithm for Wireless Sensor Networks  

E-Print Network [OSTI]

An Integral Flow-Based Energy-Efficient Routing Algorithm for Wireless Sensor Networks Shashidhar. As sensor nodes are energy-constrained, energy-efficient routing is essential for increasing the lifetime. In this paper, we consider static base stations and propose an algorithmic approach to obtain integral energy-efficient

Prakash, Ravi

383

Calibrating Wireless Sensor Network Simulation Models with Real-World Experiments  

E-Print Network [OSTI]

,braun}@iam.unibe.ch Abstract. This paper studies the energy-efficiency and service charac- teristics of a recently developed energy-efficient MAC protocol for wire- less sensor networks in simulation and on a real sensor hardware level of detail. In this paper we analyze the energy-efficiency and service characteristics

Braun, Torsten

384

Energy-efcient Route-aware MAC protocols for Diffusion-based Sensor Networks  

E-Print Network [OSTI]

Energy-efŁcient Route-aware MAC protocols for Diffusion-based Sensor Networks Injong Rhee, Jangwon Route-awareness allows sensor nodes to save energy by "sleep- ing" opportunistically when choices, especially over low energy budget, than existing schemes. Our simulation results show that route-aware

Young, R. Michael

385

Energy efficient control of polychromatic solid-state lighting using a sensor network  

E-Print Network [OSTI]

used in the US and most developed economies tends to be consumed in homes and buildings,1 energy and environments using sensors and actuators to mitigate energy usage. Lighting, in particular, accounts for 22Energy efficient control of polychromatic solid-state lighting using a sensor network Matthew

386

Towards a Zero-Configuration Wireless Sensor Network Architecture for Smart Buildings  

E-Print Network [OSTI]

Towards a Zero-Configuration Wireless Sensor Network Architecture for Smart Buildings Lars Schor. Within a smart building many sensors and actuators are interconnected to form a control system. Nowa {lschor, sommer, wattenhofer}@tik.ee.ethz.ch Abstract Today's buildings account for a large fraction

387

Constrained Flow Optimization with Applications to Data Gathering in Sensor Networks  

E-Print Network [OSTI]

]. In this paper, we study the energy efficiency of data gathering in the WSNs from an algorithmic perspective.edu Abstract. We focus on data gathering problems in energy-constrained wireless sensor networks. We study a unified framework to study a variety of data gathering problems in sensor net- works. The efficiency

Prasanna, Viktor K.

388

Pro-active Strategies for the Frugal Feeding Problem in Wireless Sensor Networks  

E-Print Network [OSTI]

Sensor Networks. The FFP attempts to find energy-efficient routes for a mobile service entity for the case of a fixed rendezvous location (i.e., service facility with limited number of docking ports) and mobile capable entities (sensors). Our pro-active solution reduces the FFP to finding energy

Lanthier, Mark

389

Congestion Avoidance based on Light-Weight Buffer Management in Sensor Networks  

E-Print Network [OSTI]

, congestion may occur as data packets converge toward a sink. Congestion causes energy waste, throughput1 Congestion Avoidance based on Light-Weight Buffer Management in Sensor Networks Shigang Chen, and above all, energy supply. When a critical event triggers a surge of data generated by the sensors

Chen, Shigang

390

A Channel Model for Wireless Sensor Networks in Gas Turbine Engines  

E-Print Network [OSTI]

A Channel Model for Wireless Sensor Networks in Gas Turbine Engines K. Sasloglou, I. A. Glover , P.5 GHz) for wireless sensors deployed over the external surfaces of a gas turbine engine is reported. The model is empirical and based on a series of transmission loss measurements over the surface of a gas

Atkinson, Robert C

391

Wireless Non-contact EEG/ECG Electrodes for Body Sensor Networks  

E-Print Network [OSTI]

Wireless Non-contact EEG/ECG Electrodes for Body Sensor Networks Yu M. Chi and Gert Cauwenberghs University of California, San Diego La Jolla, CA 92093 Abstract--A wireless EEG/ECG system using non transmits EEG/ECG telemetry to a computer for storage and processing. Index Terms--ECG, EEG, Body Sensor

Cauwenberghs, Gert

392

Variable Radii Connected Sensor Cover in Sensor ZONGHENG ZHOU, SAMIR R. DAS, HIMANSHU GUPTA  

E-Print Network [OSTI]

is to maintain the fidelity of the gathered data while minimizing energy usage in the network. Energy is spent to be monitored. The set of active sensors should also form a connected communication graph, so that they can of selecting a minimum energy-cost connected sensor cover, when each sensor node can vary its sensing

Gupta, Himanshu

393

Self organization of wireless sensor networks using ultra-wideband radios  

DOE Patents [OSTI]

A novel UWB communications method and system that provides self-organization for wireless sensor networks is introduced. The self-organization is in terms of scalability, power conservation, channel estimation, and node synchronization in wireless sensor networks. The UWB receiver in the present invention adds two new tasks to conventional TR receivers. The two additional units are SNR enhancing unit and timing acquisition and tracking unit.

Dowla, Farid U. (Castro Valley, CA); Nekoogar, Franak (San Ramon, CA); Spiridon, Alex (Palo Alto, CA)

2009-06-16T23:59:59.000Z

394

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

SciTech Connect (OSTI)

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

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

2012-11-30T23:59:59.000Z

395

Health Monitoring of Civil Infrastructures Using Wireless Sensor Networks  

E-Print Network [OSTI]

span and the south tower of the Golden Gate Bridge (GGB). Ambient structural vibrations are reliably of ambient vibrations and strong motion. The chosen test bed is the Golden Gate Bridge in San Francisco Bay measured at a low cost and without interfering with the operation of the bridge. Requirements that SHM

Culler, David E.

396

Monitoring Volcanic Eruptions with a Wireless Sensor Network  

E-Print Network [OSTI]

consumption of these systems is very high, requiring large batteries and solar panels for long deployments, and differ- entiate true eruptions from noise or other signals (e.g., mining activity) not of volcanological interest. A typical campaign-type study will involve placement of one or more stations on various sites

397

Mobile sensor network to monitor wastewater collection pipelines  

E-Print Network [OSTI]

105 10.2 Power loss due to the refraction at air-mediumintroduces a significant power loss. To describe the radioFresh Water Seawater Power loss due to water In free space,

Lim, Jungsoo

2012-01-01T23:59:59.000Z

398

ROPE: A Reactive, Opportunistic Protocol for Environment Monitoring Sensor Networks  

E-Print Network [OSTI]

-Oliver School of Computer Science & Software Engineering The University of Western Australia rachel nodes waste valuable energy on data re- transmissions when communication conditions are poor

Cardell-Oliver, Rachel

399

Intelligent Software Agents for Enhancing Sensor Networks Monitoring of  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFunInfrared Land SurfaceVirus-InfectedIntelligent Coatings for LocationChanging

400

Energy Consumption in Wireless Sensor Networks is a fundamental issue in terms of functionality and network lifetime. Minimization  

E-Print Network [OSTI]

ABSTRACT Energy Consumption in Wireless Sensor Networks is a fundamental issue in terms of functionality and network lifetime. Minimization of energy consumption by applying optimization techniques setup. Application driven profiling of energy consumption at the node level is a useful tool for optimal

Vouyioukas, Demosthenes

Note: This page contains sample records for the topic "monitoring sensor network" 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

Design and implementation of PAVEMON: a GIS web-based pavement monitoring system based on large amounts of heterogeneous sensors data.  

E-Print Network [OSTI]

??A web-based PAVEment MONitoring system, PAVEMON, is a GIS oriented platform for accommodating, representing, and leveraging data from a multi-modal mobile sensor system. Stated sensor… (more)

Shahini Shamsabadi, Salar

2015-01-01T23:59:59.000Z

402

Simulation of the RPL Routing Protocol for IPv6 Sensor Networks: two cases studies Leila Ben Saad  

E-Print Network [OSTI]

by our own RPL module. We then focus on the performance comparison of simulated sensor networks and real global lifetime. Keywords-Network Simulation, RPL, PLC, IPv6, Mobile Sinks, Energy Optimization, WSN, 802Simulation of the RPL Routing Protocol for IPv6 Sensor Networks: two cases studies Leila Ben Saad

Boyer, Edmond

403

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

SciTech Connect (OSTI)

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

Repasky, Kevin

2013-09-30T23:59:59.000Z

404

Key Distribution Mechanisms for Wireless Sensor Networks: a Survey  

E-Print Network [OSTI]

of physical attacks to unattended sensors. Moreover, in some deployment sce- narios sensor nodes need, Computer Science Department, Lally 310, 110 8th Street, Troy, NY 12180-3590. Technical Report TR-05

Bystroff, Chris

405

Key Distribution Mechanisms for Wireless Sensor Networks: a Survey  

E-Print Network [OSTI]

of physical attacks to unattended sensors. Moreover, in some deployment sce­ narios sensor nodes need, Computer Science Department, Lally 310, 110 8th Street, Troy, NY 12180­3590. Technical Report TR­05

Bystroff, Chris

406

Elevated Temperature Sensors for On-Line Critical Equipment Health Monitoring  

SciTech Connect (OSTI)

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

James Sebastian

2003-09-29T23:59:59.000Z

407

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

E-Print Network [OSTI]

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

2009-01-01T23:59:59.000Z

408

Non-Uniform Entropy Compression for Uniform Energy Distribution in Wireless Sensor Networks  

E-Print Network [OSTI]

Xiaoming Lu, Matt Spear, S. Felix Wu and Karl Levitt Department of Computer Science UC Davis, Davis, CANon-Uniform Entropy Compression for Uniform Energy Distribution in Wireless Sensor Networks to increase the network's lifetime and to normalize the energy use per unit time, but they each have

California at Davis, University of

409

A Dynamic Query-tree Energy Balancing Protocol for Sensor Networks  

E-Print Network [OSTI]

A Dynamic Query-tree Energy Balancing Protocol for Sensor Networks H. Yang, F. Ye and B. Sikdar a "Dynamic Query-tree Energy Balancing" (DQEB) protocol to dynamically adjust the tree structure and minimize networks. In [15] it has been shown that the minimum- energy broadcast tree problem is NP

Sikdar, Biplab

410

Efficient Energy Management Policies for Networks with Energy Harvesting Sensor Nodes  

E-Print Network [OSTI]

Efficient Energy Management Policies for Networks with Energy Harvesting Sensor Nodes Vinod Sharma at that time at the node. For such networks we develop efficient energy management policies. First for the largest possible data rate. Next we obtain energy management policies which minimize the mean delay

Sharma, Vinod

411

Improving the Energy Balance of Field-based Routing in Wireless Sensor Networks  

E-Print Network [OSTI]

Improving the Energy Balance of Field-based Routing in Wireless Sensor Networks Goce Trajcevski of the network merge into a single path. These path merging effects decrease significantly the energy balance deployments. When multiple sources transmit infor- mation simultaneously, together with energy balancing

Bustamante, Fabián E.

412

A Cluster-based Energy Balancing Scheme in Heterogeneous Wireless Sensor Networks  

E-Print Network [OSTI]

A Cluster-based Energy Balancing Scheme in Heterogeneous Wireless Sensor Networks Jing Ai, Damla,turgut,lboloni}@cpe.ucf.edu Abstract. In this paper, we propose a novel, cluster-based energy balancing scheme. We assume the existence significant improvements in energy balancing leading to a longer con- nected time of the network

Bölöni, Ladislau L

413

Rapid Development and Flexible Deployment of Adaptive Wireless Sensor Network Applications  

E-Print Network [OSTI]

-Liang Fok, Gruia-Catalin Roman, and Chenyang Lu Washington University in St. Louis Saint Louis, Missouri 63130 {liang, roman, lu}@cse.wustl.edu Abstract Wireless sensor networks (WSNs) are difficult to pro development. An Agilla network is de- ployed with no pre-installed application. Instead, users inject mobile

Roman, Gruia-Catalin

414

AN ASYMPTOTICALLY OPTIMAL APPROACH TO THE DISTRIBUTED ADAPTIVE TRANSMIT BEAMFORMING IN WIRELESS SENSOR NETWORKS  

E-Print Network [OSTI]

the plants on a field. As the transmission power of each single node is too weak to reach the distant]. A solution to synchronize carrier signals of distributed wireless nodes is virtual/cooperative MIMO for wireless sen- sor networks [1, 2, 3]. In virtual MIMO for wireless sensor networks, single antenna nodes

Beigl, Michael

415

Application-Based Collision Avoidance in Wireless Sensor Networks Thanos Stathopoulos  

E-Print Network [OSTI]

- tional burden to the already energy constrained system. In this paper, we present an application by a factor of 8 and the energy consump- tion by up to 50%. 1. Introduction Wireless sensor networks consist radio communication, the largest source of energy drain. In general, collisions on wireless networks can

Heidemann, John

416

CROSS-LAYER OPTIMIZATION WITH POWER CONTROL IN DS-CDMA VISUAL SENSOR NETWORKS  

E-Print Network [OSTI]

There has been a rapidly increasing demand for real-time video transmission over wireless networks. Sensor con- straints required for video transmission. These networks are com- prised of typically low in order to request changes in transmission parameters, such as source coding rate, channel coding rate

Kondis, Lisimachos Paul

417

Multi-Modal Communications in Underwater Sensor Networks Using Depth Adjustment  

E-Print Network [OSTI]

taking energy usage into account. We perform a preliminary analysis of the methods and show counterparts for minimizing energy usage and minimizing hop count. We find that while there are cer- tainly Acoustic communication typically dominates the power us- age in underwater sensor networks. As networks

Farritor, Shane

418

A Turnover based Adaptive HELLO Protocol for Mobile Ad Hoc and Sensor Networks  

E-Print Network [OSTI]

A Turnover based Adaptive HELLO Protocol for Mobile Ad Hoc and Sensor Networks François Ingelrest.Mitton,David.Simplot}@lifl.fr Abstract--We present a turnover based adaptive HELLO protocol (TAP), which enables nodes in mobile networks to dynamically adjust their HELLO messages frequency depending on the current speed of nodes. To the best of our

Paris-Sud XI, Université de

419

Cross-Layer Design for Energy Conservation in Wireless Sensor Networks  

E-Print Network [OSTI]

Cross-Layer Design for Energy Conservation in Wireless Sensor Networks Fatma Bouabdallah, Nizar allows significant energy conservation. On the other hand, at the MAC layer, we propose to control limit for each link, further energy conservation can be achieved, improving thus the network lifetime

Boutaba, Raouf

420

Rapid Deployment with Confidence: Calibration and Fault Detection in Environmental Sensor Networks  

E-Print Network [OSTI]

Rapid Deployment with Confidence: Calibration and Fault Detection in Environmental Sensor Networks for Embedded Networked Sensing, UCLA Department of Civil and Environmental Engineering, MIT {nithya, kohler The presence of arsenic in groundwater has led to the largest environmental poisoning in history; tens

Nowak, Robert

Note: This page contains sample records for the topic "monitoring sensor network" 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

Nano-RK: an Energy-aware Resource-centric RTOS for Sensor Networks  

E-Print Network [OSTI]

Nano-RK: an Energy-aware Resource-centric RTOS for Sensor Networks Anand Eswaran1 , Anthony Rowe1-sensitive in nature. To sup- port such applications, we design and implement Nano-RK, a reservation-based real for CPU and network bandwidth reservations. Tasks can spec- ify their resource demands and the operating

Rajkumar, Ragunathan "Raj"

422

Paradigms for Mobile Agent-Based Active Monitoring of Network Systems  

E-Print Network [OSTI]

Paradigms for Mobile Agent-Based Active Monitoring of Network Systems Anand Tripathi, Tanvir a framework together with a set of paradigms for mobile agent based active monitoring of network systems system policies. A system administrator can securely modify the monitor- ing policies and information

Tripathi, Anand

423

access design considerations: Topics by E-print Network  

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

for a Large-Scale Wireless Sensor Network for Substation Monitoring Asis such as transformers, circuit break- ers, and compressors. All nodes communicate over a multihop...

424

Ivan Stojmenovic! 1! IoT/CPS with sensors and robots  

E-Print Network [OSTI]

! ! Vehicular networks! ! Smart cameras! ! Smart power grids! ! Smart city (bus arrival time, crowd certain action ! ! Single sensor controlled! ! Networked sensor controlled! ! Smart building (temperature? Coordination ? GreenOrbs Tianmu mountains Lin'an City 1000+ sensors in Lin'An and WuXi Collaborative monitoring

Stojmenovic, Ivan

425

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

DOE Patents [OSTI]

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

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

1998-01-01T23:59:59.000Z

426

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

DOE Patents [OSTI]

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

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

1998-08-18T23:59:59.000Z

427

SensorFlock: An Airborne Wireless Sensor Network of Micro-Air 1Jude Allred, 1Ahmad Bilal Hasan, 1Saroch Panichsakul, 2William Pisano,2Peter Gray, 1Jyh Huang,  

E-Print Network [OSTI]

SensorFlock: An Airborne Wireless Sensor Network of Micro-Air Vehicles 1Jude Allred, 1Ahmad Bilal.Pisano}@colorado.edu Abstract An airborne wireless sensor network (WSN) composed of bird-sized micro aerial vehicles (MAVs, and wireless communication networking between MAVs. We present experimental results from flight tests of flocks

Mohseni, Kamran

428

Roadmap Query Protocols for Sensor Network Guided Navigation in Dynamic Environments  

E-Print Network [OSTI]

Autonomous mobile entity navigation through dynamic and unknown environments is an essential part of many mission critical applications like search and rescue and fire fighting. The dynamism of the environment makes it particularly difficult to achieve navigation using just on-board sensors and existing navigation methods. This motivates the integration of wireless sensor networks with navigation. The ease of deployment of a wireless sensor network along with its capability of collecting and delivering information about the surrounding environment makes it feasible to use wireless sensor networks to aid navigation in dynamic environments. In this paper, we present integrated navigation and network query strategies that achieve good navigation performance with low network communication cost. The reduced communication cost not only increases network lifetime but also improves navigation performance by increasing network responsiveness, which is required to maintain a high degree of awareness in dynamic environments. The proposed strategies include a roadmap based navigation strategy coupled with two different query strategies called Roadmap Query (RQ) and Robust Roadmap Query (RRQ). The query strategies are optimized for the roadmap based navigation strategy, and are shown, through simulation under realistic fire scenarios, to outperform existing approaches in terms of both navigation performance and communication cost. We also present a mobile agent based implementation of RQ and provide empirical results of its performance on a Mica2 mote testbed.

Sangeeta Bhattacharya; et al.

429

A new method for coronary stenosis detection based on capacitive sensors of a Wireless Sensor Network  

E-Print Network [OSTI]

monitoring of coronary artery bypass graft or the vessels underwent percutaneous coronary interventional

Vouyioukas, Demosthenes

430

aerosol polarimetry sensor: Topics by E-print Network  

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

Mission Richard J. Peralta,*1 Carl Nardell,1 Brian Cairns Sensor (APS) being built by Raytheon under contract to NASA's Goddard Space Flight Center. Scheduled of the measurements,...

431

Deployment and organization strategies for sampling- interpolation sensor networks  

E-Print Network [OSTI]

August [Das08a] Das, A. and Kempe, D, ‘Algorithms for Subset2008. [Das08b] Das, A. and Kempe, D, “Sensor Selection for

Liaskovitis, Periklis G.

2009-01-01T23:59:59.000Z

432

Energy Efficient Distributed Data Fusion In Multihop Wireless Sensor Networks  

E-Print Network [OSTI]

since sensors are only equipped with limited batteries.the replace- ment of batteries can be costly, evenand drain the batteries quickly. For convenience, hereafter

Huang, Yi

2010-01-01T23:59:59.000Z

433

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.

434

Analysis of the Monitoring Network at the Salmon, Mississippi, Site  

SciTech Connect (OSTI)

The Salmon site in southern Mississippi was the location of two underground nuclear tests and two methane-oxygen gas explosion tests conducted in the Tatum Salt Dome at a depth of 2,715 feet below ground surface. The U.S. Atomic Energy Commission (a predecessor agency of the U.S. Department of Energy [DOE]) and the U.S. Department of Defense jointly conducted the tests between 1964 and 1970. The testing operations resulted in surface contamination at multiple locations on the site and contamination of shallow aquifers. No radionuclides from the nuclear tests were released to the surface or to groundwater, although radionuclide-contaminated drill cuttings were brought to the surface during re-entry drilling. Drilling operations generated the largest single volume of waste materials, including radionuclide-contaminated drill cuttings and drilling fluids. Nonradioactive wastes were also generated as part of the testing operations. Site cleanup and decommissioning began in 1971 and officially ended in 1972. DOE conducted additional site characterization between 1992 and 1999. The historical investigations have provided a reasonable understanding of current surface and shallow subsurface conditions at the site, although some additional investigation is desirable. For example, additional hydrologic data would improve confidence in assigning groundwater gradients and flow directions in the aquifers. The U.S. Environmental Protection Agency monitored groundwater at the site as part of its Long-Term Hydrologic Monitoring Program from 1972 through 2007, when DOE's Office of Legacy Management (LM) assumed responsibility for site monitoring. The current monitoring network consists of 28 monitoring wells and 11 surface water locations. Multiple aquifers which underlie the site are monitored. The current analyte list includes metals, radionuclides, and volatile organic compounds (VOCs).

None

2013-08-01T23:59:59.000Z

435

E-Print Network 3.0 - air monitoring methods Sample Search Results  

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

Trent University Environmental and Resource Studies Program Summary: Chemistry 2 Sep. 22 Air Pollution Overview The Atmosphere Air Quality Monitoring Networks 1 3 Sep. 29......

436

E-Print Network 3.0 - air quality monitoring Sample Search Results  

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

Trent University Environmental and Resource Studies Program Summary: Chemistry 2 Sep. 22 Air Pollution Overview The Atmosphere Air Quality Monitoring Networks 1 3 Sep. 29......

437

E-Print Network 3.0 - air monitoring system Sample Search Results  

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

Trent University Environmental and Resource Studies Program Summary: Chemistry 2 Sep. 22 Air Pollution Overview The Atmosphere Air Quality Monitoring Networks 1 3 Sep. 29......

438

E-Print Network 3.0 - air monitoring requirements Sample Search...  

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

Trent University Environmental and Resource Studies Program Summary: Chemistry 2 Sep. 22 Air Pollution Overview The Atmosphere Air Quality Monitoring Networks 1 3 Sep. 29......

439

Fear: A Fuzzy-based Energy-aware Routing Protocol for Wireless Sensor Networks  

E-Print Network [OSTI]

Many energy-aware routing protocols have been proposed for wireless sensor networks. Most of them are only energy savers and do not take care about energy balancing. The energy saver protocols try to decrease the energy consumption of the network as a whole; however the energy manager protocols balance the energy consumption in the network to avoid network partitioning. This means that energy saver protocols are not necessarily energy balancing and vice versa. However, the lifetime of wireless sensor network is strictly depending on energy consumption; therefore, energy management is an essential task to be considered. This paper proposes an energy aware routing protocol, named FEAR, which considers energy balancing and energy saving. It finds a fair trade-off between energy balancing and energy saving by fuzzy set concept. FEAR routing protocol is simulated and evaluated by Glomosim simulator.

Ahvar, Ehsan; Piran, Mohammad Jalil

2011-01-01T23:59:59.000Z

440

Fuzzy Logic Based Anomaly Detection for Embedded Network Security Cyber Sensor  

SciTech Connect (OSTI)

Resiliency and security in critical infrastructure control systems in the modern world of cyber terrorism constitute a relevant concern. Developing a network security system specifically tailored to the requirements of such critical assets is of a primary importance. This paper proposes a novel learning algorithm for anomaly based network security cyber sensor together with its hardware implementation. The presented learning algorithm constructs a fuzzy logic rule based model of normal network behavior. Individual fuzzy rules are extracted directly from the stream of incoming packets using an online clustering algorithm. This learning algorithm was specifically developed to comply with the constrained computational requirements of low-cost embedded network security cyber sensors. The performance of the system was evaluated on a set of network data recorded from an experimental test-bed mimicking the environment of a critical infrastructure control system.

Ondrej Linda; Todd Vollmer; Jason Wright; Milos Manic

2011-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "monitoring sensor network" 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

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

SciTech Connect (OSTI)

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

Humberto E. Garcia

2014-07-01T23:59:59.000Z

442

Profiling Aquatic Diffusion Process Using Robotic Sensor Networks  

E-Print Network [OSTI]

approach using smart aquatic mobile sensors such as robotic fish. In our approach, the robotic sensors pounds), and size (1-2 meters long), it is difficult to Yu Wang, Rui Tan and Guoliang Xing of autonomous robotic fish developed by the Smart Microsystems Laboratory at Michigan State University [6

Tan, Xiaobo

443

Adaptive Sampling for Wireless Sensor Networks Rebecca M. Willett  

E-Print Network [OSTI]

net- work that can significantly reduce energy consumption. Under a piecewise smooth field assumption activating only n3/4 of the sensors in the net- work. This approach can save significant energy compared acquisition, and communication contribute significantly to the energy ex- penditure of wireless sensor

Willett, Rebecca

444

Model-Driven Data Acquisition in Sensor Networks Amol Deshpande  

E-Print Network [OSTI]

is a database" is problematic, however, because sensors do not exhaustively represent the data in the real world to complement the readings. In this paper, we enrich interactive sensor querying with statistical modeling tech time and energy. Utilizing the combination of a model and live data acquisition raises the challenging

445

STOMP: A Software Architecture for the Design and Simulation UAV-Based Sensor Networks  

SciTech Connect (OSTI)

This paper presents the Simulation, Tactical Operations and Mission Planning (STOMP) software architecture and framework for simulating, controlling and communicating with unmanned air vehicles (UAVs) servicing large distributed sensor networks. STOMP provides hardware-in-the-loop capability enabling real UAVs and sensors to feedback state information, route data and receive command and control requests while interacting with other real or virtual objects thereby enhancing support for simulation of dynamic and complex events.

Jones, E D; Roberts, R S; Hsia, T C S

2002-10-28T23:59:59.000Z

446

IMAGESTATE n this article, we provide a signal processing perspective on large-scale sensor networks. We focus  

E-Print Network [OSTI]

be exploited by network protocols to ensure energy efficiency. The underlying theme is about how a principled networks. We focus on two characteristics of sensor networks: application specificity and energy constraint integration of signal processing and networking can lead to an efficient and fair use of limited resources. We

Tong, Lang

447

USC/ISI TECHNICAL REPORT ISI-TR-599, NOVEMBER 2004 1 Energy Conservation in Sensor Networks at the  

E-Print Network [OSTI]

energy. With limited battery capacity, sensor networks are characterized by the situation where "each bit sent brings that node closer to death" [1]. Some sensor networks today add energy harvesting with solar Institute, University of Southern California. large body of literature around analysis and protocol design

Heidemann, John

448

An Adaptive Energy-Efficient and Low-Latency MAC for Data Gathering in Wireless Sensor Networks  

E-Print Network [OSTI]

nodes to a sink through a unidirectional tree. In this paper, we propose DMAC, an energy efficient gathering trees in sensor networks, DMAC provides significant energy savings and latency re- duction whileAn Adaptive Energy-Efficient and Low-Latency MAC for Data Gathering in Wireless Sensor Networks

Krishnamachari, Bhaskar

449

Trailing Mobile Sinks: A Proactive Data Reporting Protocol for Wireless Sensor Networks Xinxin Liu, Han Zhao, Xin Yang  

E-Print Network [OSTI]

Biosystems and Agriculture Eng. Oklahoma State University Email: ning.wang@okstate.edu Abstract--In Wireless battery life, energy saving is of paramount importance in the design of sensor network protocols. Recent to trail point 2 in a sensor network deployed in a wild area. Black solid route represents data report

Li, Xiaolin "Andy"

450

An Approximation Algorithm for Data Storage Placement in Sensor Networks Bo Sheng, Chiu C. Tan, Qun Li, and Weizhen Mao  

E-Print Network [OSTI]

.g., flash memory) and more battery power. In such a hybrid sensor network, these storage nodes collect nodes, the concerns of limited storage, communication capacity, and battery power are amelioratedAn Approximation Algorithm for Data Storage Placement in Sensor Networks Bo Sheng, Chiu C. Tan, Qun

Mao, Weizhen

451

PerformanceEvaluation of Adaptiveand Energy-efficient MAC Protocolsfor WirelessSensor Networks Torsten Braun, Philipp Hurni  

E-Print Network [OSTI]

PerformanceEvaluation of Adaptiveand Energy-efficient MAC Protocolsfor WirelessSensor Networks Bern, Switzerland braun@iam.unibe.ch, hurni@iam.unibe.ch Abstract The paper describes an energy-efficient schemes. Keywords: Wireless Sensor Networks, Energy-efficient Protocols, MediumAccessControl I

Braun, Torsten

452

A Tree-Based TESLA Broadcast Authentication for Sensor Networks Donggang Liu Peng Ning Sencun Zhu Sushil Jajodia  

E-Print Network [OSTI]

A Tree-Based µTESLA Broadcast Authentication for Sensor Networks Donggang Liu Peng Ning Sencun Zhu to multiple nodes in an authenticated way. µTESLA and multi-level µTESLA have been proposed to provide of senders. Though multi-level µTESLA schemes can scale up to large sensor networks (in terms of receivers

Zhu, Sencun

453

Performance of wireless sensor networks under random node failures  

SciTech Connect (OSTI)

Networks are essential to the function of a modern society and the consequence of damages to a network can be large. Assessing network performance of a damaged network is an important step in network recovery and network design. Connectivity, distance between nodes, and alternative routes are some of the key indicators to network performance. In this paper, random geometric graph (RGG) is used with two types of node failure, uniform failure and localized failure. Since the network performance are multi-facet and assessment can be time constrained, we introduce four measures, which can be computed in polynomial time, to estimate performance of damaged RGG. Simulation experiments are conducted to investigate the deterioration of networks through a period of time. With the empirical results, the performance measures are analyzed and compared to provide understanding of different failure scenarios in a RGG.

Bradonjic, Milan [Los Alamos National Laboratory; Hagberg, Aric [Los Alamos National Laboratory; Feng, Pan [Los Alamos National Laboratory

2011-01-28T23:59:59.000Z

454

PERFORMANCE ANALYSIS USING SEQUENTIAL DETECTION IN A SERIAL MULTI-HOP WIRELESS SENSOR NETWORK  

E-Print Network [OSTI]

PERFORMANCE ANALYSIS USING SEQUENTIAL DETECTION IN A SERIAL MULTI-HOP WIRELESS SENSOR NETWORK A Thesis by DAE HYUN CHOI Submitted to the O?ce of Graduate Studies of Texas A&M University in partial fulflllment of the requirements for the degree... of MASTER OF SCIENCE August 2008 Major Subject: Electrical Engineering PERFORMANCE ANALYSIS USING SEQUENTIAL DETECTION IN A SERIAL MULTI-HOP WIRELESS SENSOR NETWORK A Thesis by DAE HYUN CHOI Submitted to the O?ce of Graduate Studies of Texas A&M University...

Choi, Dae H.

2010-01-16T23:59:59.000Z

455

A Hybrid Sensor System for Indoor Air Quality Monitoring Yun Xiang, Ricardo Piedrahita, Robert P. Dick, Michael Hannigan, Qin Lv, Li Shang  

E-Print Network [OSTI]

indoor pollutants, such as carbon dioxide (CO2), can have significant impacts on the productivity quality sensor networks [17], [34]. Mobile sensor networks are composed of many low-cost, power- efficient than outdoors. Many indoor pollutants, such as volatile or- ganic compound (VOC), carbon monoxide

Dick, Robert

456

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

E-Print Network [OSTI]

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

Boyer, Edmond

457

atlas pixel sensor: Topics by E-print Network  

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

G; Tsiskaridtze, S; Tsurin, I; Unno, Y; Weigel, P; Wittig, T 2012-01-01 5 Radiation Damage of the ATLAS Pixel Sensors Using Leakage Current Measurement System CERN Preprints...

458

atlas pixel sensors: Topics by E-print Network  

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

G; Tsiskaridtze, S; Tsurin, I; Unno, Y; Weigel, P; Wittig, T 2012-01-01 5 Radiation Damage of the ATLAS Pixel Sensors Using Leakage Current Measurement System CERN Preprints...

459

Loss-Resilient Proactive Data Transmission in Wireless Sensor Networks  

E-Print Network [OSTI]

environments. Moreover, sensor nodes are con- strained by energy, computation power and storage. Existing to the destination without loss. However, existing reliable transmission techniques either are too costly forecast, structural condition assessment) require reliable data communications, such that a target

Xu, Jianliang

460

Spectrum sensing improvement in cognitive radio networks for real-time patients monitoring  

E-Print Network [OSTI]

Spectrum sensing improvement in cognitive radio networks for real-time patients monitoring Dramane-bands to perform their transmission any- time and anywhere. Cognitive radio, although appropriate technology. Key words: Cognitive radio networks, e-health, patients monitoring, connectivity, Grey Model, Machine

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "monitoring sensor network" 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

Fuzzy Logic Control Based QoS Management in Wireless Sensor/Actuator Networks  

E-Print Network [OSTI]

Wireless sensor/actuator networks (WSANs) are emerging rapidly as a new generation of sensor networks. Despite intensive research in wireless sensor networks (WSNs), limited work has been found in the open literature in the field of WSANs. In particular, quality-of-service (QoS) management in WSANs remains an important issue yet to be investigated. As an attempt in this direction, this paper develops a fuzzy logic control based QoS management (FLC-QM) scheme for WSANs with constrained resources and in dynamic and unpredictable environments. Taking advantage of the feedback control technology, this scheme deals with the impact of unpredictable changes in traffic load on the QoS of WSANs. It utilizes a fuzzy logic controller inside each source sensor node to adapt sampling period to the deadline miss ratio associated with data transmission from the sensor to the actuator. The deadline miss ratio is maintained at a pre-determined desired level so that the required QoS can be achieved. The FLC-QM has the advantag...

Xia, Feng; Sun, Youxian; Tian, Yu-Chu

2008-01-01T23:59:59.000Z

462

On Improving the Representation of a Region Achieved by a Sensor Network  

E-Print Network [OSTI]

, target tracking, wildlife monitoring and pollution studies [1]. Based on the expected behavior of indi; in these applications, sensor nodes make relevant observations within a local sensing area using vision, sound, seismic-acoustic pollution at precisely the spot where it is located, and there is no concept of a sensing area. The physical

Sethu, Harish

463

Event Classification and Filtering of False Alarms in Wireless Sensor Networks Markus Walchli and Torsten Braun  

E-Print Network [OSTI]

or non-relevant event reports, communication costs can be saved and false alarms prevented. To evaluate an impact on reporting delays. On the other hand, preventing false alarms saves costs in terms of energy- age, a radio, and an array of sensors to monitor the physical environment. Environmental data

Braun, Torsten

464

GAS ANALYSIS SYSTEM COMPOSED OF A SOLID-STATE SENSOR ARRAY AND HYBRID NEURAL NETWORK  

E-Print Network [OSTI]

was exposed to various mixtures of air with these four pollutants. The paper deals with the calibration to control a chemical process or to monitor the safety of gas environment in an underground mine means of estimating the flammable gas in the air. One of the main problems with this type of gas sensors

Osowski, Stanislaw

465

RealTime SpatioTemporal Query Processing in Mobile AdHoc Sensor Networks  

E-Print Network [OSTI]

that has multiple sensors (e.g., mo­ tion sensors, acoustic sensors, infrared light emitting diodes,

466

Scalable Coordination for Wireless Sensor Networks: SelfConfiguring Localization Systems  

E-Print Network [OSTI]

networks: tuning density to trade operational quality against lifetime; using multi­ ple sensor modalities, water, soil, chemistry); condition based maintenance; smart spaces; military surveillance; preci­ sion) or inhospitable terrain (toxic or urban locations). The above requirements impose substantial physical constraints

Heidemann, John

467

Bounds on the Energy Consumption of Routings in Wireless Sensor Networks  

E-Print Network [OSTI]

Bounds on the Energy Consumption of Routings in Wireless Sensor Networks Juan Alonso1 , Adam Technical Report T2003:22 ISSN 1100-3154 ISRN:SICS-T­2003/22-SE Abstract. Energy is one of the most of routing on energy consumption. Our results are very general and, within the assumptions listed in Section

468

A Middleware Framework for Market-Based Actuator Coordination in Sensor and Actuator Networks  

E-Print Network [OSTI]

A Middleware Framework for Market-Based Actuator Coordination in Sensor and Actuator Networks Joel they actually affect the environment. This paper advocates the use of market-based methods as the basis-based distributed actuator coordination in an HVAC system leads to efficient, temporal and fair allocation of energy

Varela, Carlos

469

ENERGY-EFFICIENT GEOGRAPHIC ROUTING IN ENVIRONMENTALLY POWERED WIRELESS SENSOR NETWORKS  

E-Print Network [OSTI]

, GEBRES maintains higher minimum residual energy on nodes and achieves better load balancing in terms of having a smaller standard deviation of residual energy among nodes. GEBRES exhibits a little degradationENERGY-EFFICIENT GEOGRAPHIC ROUTING IN ENVIRONMENTALLY POWERED WIRELESS SENSOR NETWORKS Kai Zeng

California at Davis, University of

470

Demo Abstract: A Cooja-based Tool for Maintaining Sensor Network Coverage Requirements in a Building  

E-Print Network [OSTI]

Design, Reliability, Performance Keywords Sensor Networks, Post-Deployment, Coverage Maintenance 1 Technologies Research Center (UTRC) Ireland Ltd FedorS@utrc.utc.com ABSTRACT Contiki's Cooja is a very popular requirement when active nodes fail and report failures that require phys- ical maintenance. This tool allows

Sreenan, Cormac J.

471

AN ENERGY-AWARE SPANNING TREE AlGORITHM FOR DATA AGGREGATION IN WIRELESS SENSOR NETWORKS  

E-Print Network [OSTI]

AN ENERGY-AWARE SPANNING TREE AlGORITHM FOR DATA AGGREGATION IN WIRELESS SENSOR NETWORKS Marc Lee. In this paper, we propose E-Span, which is an energy-aware spanning tree algorithm. E-Span is a distributed's residual energy. In [5], a dynamic convoy tree-based collaboration framework for tracking a mobile target

Wong, Vincent

472

Oblivious Routing for Sensor Network Costas Busch and Malik Magdon-Ismail and Jing Xi  

E-Print Network [OSTI]

.rpi.edu (Currently employed at Bank of America, New York) 413 #12;414 Costas Busch and Malik Magdon-Ismail and Jing operated with a battery that has limited energy capacity. To maximize the lifetime of the nodes, the time, the lifetime of a battery operated sensor network is prolonged, since the time that the first node runs out

Magdon-Ismail, Malik

473

Finding Source of Electromagnetic Interference (EMI) to GPS Using a Network Sensors  

E-Print Network [OSTI]

Finding Source of Electromagnetic Interference (EMI) to GPS Using a Network Sensors Shau-Shiun Jan, Per Enge Department of Aeronautics and Astronautics Stanford University ABSTRACT Any electromagnetic interference (EMI) to GPS must invoke a fast location and removal response, because of the high military

Stanford University

474

Lifetime Approximation Schemes Allow Multicast Algorithm with Linear Message Complexity in Wireless Sensor Networks  

E-Print Network [OSTI]

residual battery energy based on the observation that long-lived multicast / broadcast trees should consume information in order to construct an energy efficient multicast tree. Sometimes, this centralized approach Sensor Networks Mianxiong Dong, Song Guo and Minyi Guo School of Electrical and Computer Engineering

Guo, Minyi

475

Anti-Collusion Position Estimation in Wireless Sensor Networks Negar Kiyavash Farinaz Koushanfar  

E-Print Network [OSTI]

and demand-initiated self-organizing structure of sensor net- malicious attacks. A host of nefarious attacks networks. Addi- niques typically use distance measurements from a spe- tionally, we propose a practical the best random sample. The performance of the pro- Strength (RSSI) [4] measurements for calculating

476

Exploring the Energy-Latency Trade-off for Broadcasts in Energy-Saving Sensor Networks  

E-Print Network [OSTI]

Exploring the Energy-Latency Trade-off for Broadcasts in Energy-Saving Sensor Networks CIGDEM the energy-latency-reliability trade-off for broadcast in WSNs by presenting a new protocol called PBBF. Essentially, for a given reliability level, energy and latency are found to be inversely related and our study

Paris-Sud XI, Université de

477

Inverse Modeling Using a Wireless Sensor Network (WSN) for Personalized Daylight Harvesting  

E-Print Network [OSTI]

Inverse Modeling Using a Wireless Sensor Network (WSN) for Personalized Daylight Harvesting Ryan: predictive: daylight harvesting: piecewise linear regression: building energy efficiency Abstract: Smart light levels, discretized by sub-hourly sun angles. Applied on two days of daylight and ten days

Agogino, Alice M.

478

Modulation-Aware Energy Balancing in Hierarchical Wireless Sensor Networks1  

E-Print Network [OSTI]

Modulation-Aware Energy Balancing in Hierarchical Wireless Sensor Networks1 Maryam Soltan, Inkwon becoming critical design concerns, a significant amount of research has focused on energy-aware design physical layer characteristics at the system deployment stage and analyzing the effects on spatial energy

Pedram, Massoud

479

Load-Balanced Routing Scheme for Energy-Efficient Wireless Sensor Networks  

E-Print Network [OSTI]

Load-Balanced Routing Scheme for Energy-Efficient Wireless Sensor Networks Fatma Bouabdallah, Nizar. In this paper, we investigate the potential energy conservation achieved by balancing the traffic throughout, load balancing, performance analysis. I. INTRODUCTION In order to minimize the energy consumption

Boutaba, Raouf

480

Modeling and Analysis of Energy Harvesting Nodes in Wireless Sensor Networks  

E-Print Network [OSTI]

, the probability of event loss due to energy run out as well as an analytical vulnerability metric, namely average state as well as the remaining energy supply of the node, we provide an analysis of the Loss ProbabilityModeling and Analysis of Energy Harvesting Nodes in Wireless Sensor Networks Alireza Seyedi

Sikdar, Biplab

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481

Improved Connectivity using Hybrid Uni/Omni-Directional Antennas in Sensor Networks  

E-Print Network [OSTI]

In partial fulfillment of the requirements of the UNIVERSITY UNDERGRADUATE RESEARCH FELLOWS April 2008 Major: Electrical Engineering ii ABSTRACT Improved Connectivity using Hybrid Uni/Omni-Directional Antennas in Sensor Networks (April 2008... environments: MATLAB, Maple Design automation tools: SIMULINK, PSpice, MAX+PLUS II LEADERSHIP & ACTIVITIES Student Engineers’ Council Undergraduate Curriculum Committee, Dept. of Computer Science Computing Service Advisory Committee, Dept. of Computer...

Kwon, Ji Heon

2008-05-27T23:59:59.000Z

482

SensEH: From Simulation to Deployment of Energy Harvesting Wireless Sensor Networks  

E-Print Network [OSTI]

panels. I. INTRODUCTION The market value of wireless sensor networks (WSNs) is growing steadily problem. Indeed, in many cases the energy density--whether solar, wind, vibrational or thermal in nature the influence of given environmental parameters, and finally to observe the WSN behavior over extended periods

Picco, Gian Pietro

483

Distance Estimation by Constructing The Virtual Ruler in Anisotropic Sensor Networks  

E-Print Network [OSTI]

fields, such as industrial sensing and scheduling, critical construction protection, environmentalDistance Estimation by Constructing The Virtual Ruler in Anisotropic Sensor Networks Yun Wang Kai. Furthermore, we develop an approach to construct a virtual ruler for distance estimation between any pair

Wu, Jie

484

Low-Cost, Robust, Threat-aware Wireless Sensor Network for Assuring the Nation's Energy Infrastructure  

SciTech Connect (OSTI)

The objective of this project was to create a low-cost, robust anticipatory wireless sensor network (A-WSN) to ensure the security and reliability of the United States energy infrastructure. This document highlights Eaton Corporation's plan to bring these technologies to market.

Carlos H. Rentel

2007-03-31T23:59:59.000Z

485

BEAM: A Burst-Aware Energy-Efficient Adaptive MAC Protocol for Wireless Sensor Networks  

E-Print Network [OSTI]

BEAM: A Burst-Aware Energy-Efficient Adaptive MAC Protocol for Wireless Sensor Networks Markus|wagen|braun|dolfus@iam.unibe.ch Abstract--Low latency for packet delivery, high throughput, good reactivity, and energy-efficient operation that optimizations for energy-efficiency and performance parameters are contradicting, most MAC protocols proposed

Braun, Torsten

486

Error Control Coding in Low-Power Wireless Sensor Networks: When is ECC  

E-Print Network [OSTI]

Error Control Coding in Low-Power Wireless Sensor Networks: When is ECC Energy-Efficient? Sheryl L. Interference is not considered; it would lower dCR. Analog decoders are shown to be the most energy-efficient at the decoder outweighs the transmitted power savings due to using ECC, then ECC would not be energy-efficient

Howard, Sheryl

487

PW-MAC: An Energy-Efficient Predictive-Wakeup MAC Protocol for Wireless Sensor Networks  

E-Print Network [OSTI]

PW-MAC: An Energy-Efficient Predictive-Wakeup MAC Protocol for Wireless Sensor Networks Lei Tang-MAC (Predictive-Wakeup MAC), a new energy-efficient MAC protocol based on asyn- chronous duty cycling. In PW it to X-MAC, WiseMAC, and RI-MAC, three previous energy-efficient MAC protocols, under multiple concurrent

Shihada, Basem

488

Robust and Probabilistic Power-aware Scheduling of Wireless Sensor Networks  

E-Print Network [OSTI]

that sensing devices are equipped with small devices like solar panels to harvest energy. In such scenariosRobust and Probabilistic Power-aware Scheduling of Wireless Sensor Networks Hassan Jaleel to its available power. More importantly, to compensate for the effects of decrease in available power

Egerstedt, Magnus

489

Optimising Quality of Information in Data Collection for Mobile Sensor Networks  

E-Print Network [OSTI]

, such as carbon monoxide (CO), carbon dioxide (CO2), and nitrogen dioxide (NO2). Cameras could be deployed the density of wireless sensors or the underlying network infrastructure. Coupled with the low cost and almost Technology, Box 337, SE­75105 Uppsala, Sweden Email: {Farshid.Hassani, Pierre.Flener, Edith.Ngai, Justin

Flener, Pierre

490

Flask: A Language for Data-driven Sensor Network Geoffrey Mainland, Matt Welsh, and Greg Morrisett  

E-Print Network [OSTI]

processing to reduce energy and radio bandwidth usage. As a result, application developers typically invest chains of operators into a dataflow graph that may reside on individual nodes or span multiple nodes in the network. To compose dataflow graphs across sensor nodes, Flask supports a lean, general

491

Energy-Aware Geographic Routing in Lossy Wireless Sensor Networks with Environmental  

E-Print Network [OSTI]

1 Energy-Aware Geographic Routing in Lossy Wireless Sensor Networks with Environmental Energy combine geographic routing and energy-aware routing techniques and take into account the realistic lossy energy based protocols and geographic routing protocols without energy awareness. GREESs can maintain

California at Davis, University of

492

Energy-aware Georouting with Guaranteed Delivery in Wireless Sensor Networks with  

E-Print Network [OSTI]

Energy-aware Georouting with Guaranteed Delivery in Wireless Sensor Networks with Obstacles E. H algorithm invokes an energy-aware Face routing that guarantees delivery. Our work is the first to optimize node using only local neighborhood information. Within this framework, energy-aware routing schemes use

Paris-Sud XI, Université de

493

Energy-Agile Laptops: Demand Response of Mobile Plug Loads Using Sensor/Actuator Networks  

E-Print Network [OSTI]

Energy-Agile Laptops: Demand Response of Mobile Plug Loads Using Sensor/Actuator Networks Nathan@me.berkeley.edu Abstract--This paper explores demand response techniques for managing mobile, distributed loads with on observed. Our first simulation study explores a classic demand response scenario in which a large number

Culler, David E.

494

Demo Abstract: Building Energy Management Systems Actuated Using Wireless Camera Sensor Networks  

E-Print Network [OSTI]

Demo Abstract: Building Energy Management Systems Actuated Using Wireless Camera Sensor Networks for approximately 60% of the energy con- sumption within buildings [4]. The conditioning of these ar- eas, however, conditioning (HVAC) sys- tems in residential and commercial buildings account for 50% of the total building

Cerpa, Alberto E.

495

Demo Abstract: ThermoSense: Thermal Array Sensor Networks in Building Management  

E-Print Network [OSTI]

the heating, cooling, ventilation and lighting of a building to optimize energy usage. Categories and Subject-Based Ap- plication Systems]: Real-time and embedded systems 1. INTRODUCTION Energy usage has increasedDemo Abstract: ThermoSense: Thermal Array Sensor Networks in Building Management Varick L. Erickson

Cerpa, Alberto E.

496

Asymptotically Optimal Transmission Policies for Large-Scale Low-Power Wireless Sensor Networks  

E-Print Network [OSTI]

Asymptotically Optimal Transmission Policies for Large-Scale Low-Power Wireless Sensor Networks. The objective is to devise joint routing, power control and transmission scheduling policies in order to gather formulate the problem as maximizing the utility of transmissions subject to explicit fairness constraints

Starobinski, David

497

Analysis of Algorithms for Multi-Modal Communications in Underwater Sensor Networks  

E-Print Network [OSTI]

acoustic messaging and the depth adjustment system still dominate the overall energy usage. For a given energy usage and packet loss into account. We perform an analysis of the algorithms and show,m_orourke@u.pacific.edu,carrick@cse.unl.edu ABSTRACT Acoustic communication typically dominates the power us- age in underwater sensor networks

Farritor, Shane

498

DIMENSIONS: Why do we need a new Data Handling architecture for Sensor Networks?  

E-Print Network [OSTI]

DIMENSIONS: Why do we need a new Data Handling architecture for Sensor Networks? Deepak Ganesan incorporate their ex- treme resource constraints - energy, storage and processing - and spatio-temporal interpretation of the physical world in the design, cost model, and metrics of evaluation. We describe DIMENSIONS

Ganesan, Deepak

499

Prolonging Sensor Network Lifetime Through Wireless Charging Yang Peng, Zi Li, Wensheng Zhang, and Daji Qiao  

E-Print Network [OSTI]

networks. In this paper, we design such a system, build a proof-of-concept proto- type, conduct experiments, little work has been reported on designing and implementing a wire- less charging system for sensor and design pa- rameters have also been studied, which may serve as useful guidelines in actual deployment

Qiao, Daji

500

The IEE Measurement,Sensors, Instrumentationand NDT m ProfessionalNetwork  

E-Print Network [OSTI]

The IEE Measurement,Sensors, Instrumentationand NDT m ProfessionalNetwork m Transmission Lines, Michael Faraday House, Six Hills Way, Stevenage,Herts SG12AY, UK #12;1/I TRANSMISSION LINES -BASIC the basic principles of transmission lines in preparation for many of the lectures, which follow

Anlage, Steven