Sample records for monitoring sensor network

  1. Monitoring Energy Consumption In Wireless Sensor Networks

    E-Print Network [OSTI]

    Turau, Volker

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

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

    E-Print Network [OSTI]

    California at Berkeley, University of

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

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

    E-Print Network [OSTI]

    Lynch, Jerome P.

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

  4. Wireless Sensor Network for Aircraft Health Monitoring Honeywell Labs

    E-Print Network [OSTI]

    Minnesota, University of

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

  5. Health Monitoring of Civil Infrastructures Using Wireless Sensor Networks

    E-Print Network [OSTI]

    Glaser, Steven D.

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

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

    E-Print Network [OSTI]

    Huang, Yan

    Integration of wireless sensor networks in environmental monitoring cyber infrastructure Jue Yang Ã? 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

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

    E-Print Network [OSTI]

    Samuels, Julie Marie

    2012-02-14T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Samuels, Julie Marie

    2012-02-14T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Jindal, Apoorva

    2010-01-01T23:59:59.000Z

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

  10. Wireless sensor networks and environmental monitoring applications

    E-Print Network [OSTI]

    Le Borgne, Yann-Aël

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

  11. Mobile sensor network to monitor wastewater collection pipelines

    E-Print Network [OSTI]

    Lim, Jungsoo

    2012-01-01T23:59:59.000Z

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

  12. A Wireless Sensor Network Air Pollution Monitoring System

    E-Print Network [OSTI]

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

    2010-01-01T23:59:59.000Z

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

  13. Underground Coal Mine Monitoring with Wireless Sensor Networks

    E-Print Network [OSTI]

    Liu, Yunhao

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

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

    E-Print Network [OSTI]

    Upadhyay, Rochan

    2007-10-02T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Morik, Katharina

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

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

    E-Print Network [OSTI]

    Huang, Changcheng

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

  17. Wireless Sensor Network for Electric Transmission Line Monitoring

    SciTech Connect (OSTI)

    Alphenaar, Bruce

    2009-06-30T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Picco, Gian Pietro

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

  19. 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...

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

    E-Print Network [OSTI]

    Hari, Piyush

    2006-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Whittle, Andrew

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

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

    E-Print Network [OSTI]

    Atiquzzaman, Mohammed

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

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

    E-Print Network [OSTI]

    Nasipuri, Asis

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

  4. Energy Harvesting for Structural Health Monitoring Sensor Networks

    SciTech Connect (OSTI)

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

    2007-02-26T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Xue, Xin

    2009-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Panangadan, Anand

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

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

    SciTech Connect (OSTI)

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

    2011-07-06T23:59:59.000Z

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

  8. Use of sensors in monitoring civil structures

    E-Print Network [OSTI]

    Daher, Bassam William, 1979-

    2004-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Baumgartner, Tobias

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

  10. Mobile sensor network to monitor wastewater collection pipelines

    E-Print Network [OSTI]

    Lim, Jungsoo

    2012-01-01T23:59:59.000Z

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

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

    SciTech Connect (OSTI)

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

    2012-12-31T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Boyer, Edmond

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

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

    E-Print Network [OSTI]

    Nasipuri, Asis

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

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

    E-Print Network [OSTI]

    Nasipuri, Asis

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

  15. 60GHz Wireless Nano-Sensors Network for Structure Health Monitoring as Enabler for Safer, Greener Aircrafts

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

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

  16. Mobile sensor network to monitor wastewater collection pipelines

    E-Print Network [OSTI]

    Lim, Jungsoo

    2012-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Wang, Lan

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

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

    E-Print Network [OSTI]

    Khuller, Samir

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

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

    E-Print Network [OSTI]

    Boyer, Edmond

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

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

    E-Print Network [OSTI]

    Sen, Sandip

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

  1. Structural Monitoring of Wind Turbines using Wireless Sensor Networks

    E-Print Network [OSTI]

    Sweetman, Bert

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

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

    E-Print Network [OSTI]

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

    2005-01-01T23:59:59.000Z

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

  3. 1-4244-2575-4/08/$20.00 c 2008 IEEE Connectivity Monitoring in Wireless Sensor Networks

    E-Print Network [OSTI]

    Chan, Mun Choon

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

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

    E-Print Network [OSTI]

    Halgamuge, Malka N.

    2009-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Liang, Weifa

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

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

    E-Print Network [OSTI]

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

    2011-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

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

    2007-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Zhong, Lin

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

  9. 1 INTRODUCTION Wireless sensor networks tailored for structural

    E-Print Network [OSTI]

    Lynch, Jerome P.

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

  10. Mobility in Wireless Sensor Networks

    E-Print Network [OSTI]

    Mehta, Ankur Mukesh

    2012-01-01T23:59:59.000Z

    Channel-Specific Wireless Sensor Network Path Data”. In:Average Power in Wireless Sensor Networks through Data Ratedesign space of wireless sensor networks”. In: IEEE Wireless

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

    E-Print Network [OSTI]

    Hu, Fei

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

  12. Distributed MIMO for wireless sensor networks 

    E-Print Network [OSTI]

    Wen, Xiaojun

    2011-11-22T23:59:59.000Z

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

  13. Implementing a wireless base station for a sensor network

    E-Print Network [OSTI]

    Song, Heewon, 1977-

    2004-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Xue, Xin

    2009-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Steck, Jamie Bradley

    2009-01-01T23:59:59.000Z

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

  16. Sensor networks for social networks

    E-Print Network [OSTI]

    Farry, Michael P. (Michael Patrick)

    2006-01-01T23:59:59.000Z

    This thesis outlines the development of software that makes use of Bayesian belief networks and signal processing techniques to make meaningful inferences about real-world phenomena using data obtained from sensor networks. ...

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

    E-Print Network [OSTI]

    Xue, Xin

    2009-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Chen, Min

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

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

    E-Print Network [OSTI]

    Xue, Xin

    2009-01-01T23:59:59.000Z

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

  20. A Study of Approximate Data Management Techniques for Sensor Networks

    E-Print Network [OSTI]

    Martin, Ralph R.

    the monitoring operation of sensor nodes by efficiently using their limited energy, bandwidth and computation. The network can therefore be treated as a distributed sensor data management system. Sensor networks differA Study of Approximate Data Management Techniques for Sensor Networks Adonis Skordylis, Niki

  1. Sensor Networks and Consensus

    E-Print Network [OSTI]

    Schenato, Luca

    3 Dic 2009 1/32 Sensor Networks and Consensus An application: Localization and Tracking Distributed Sensors Calibration Randomized Kalman Filter Distributed Kalman Smoother Simone Del Favero PhD Thesis: Localization and Tracking Distributed Sensors Calibration Randomized Kalman Filter Distributed Kalman Smoother

  2. Decentralized TDOA Sensor Pairing in Multihop Wireless Sensor Networks

    E-Print Network [OSTI]

    Meng, Wei; Lihua, Xie; Wendong, Xiao

    2013-01-01T23:59:59.000Z

    localization in wireless sensor networks,” IEEE Signallocalization in wireless sensor networks,” IEEE Trans.techniques for wireless sensor networks: A survey,” IEEE

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

    E-Print Network [OSTI]

    California at Berkeley, University of

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

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

    E-Print Network [OSTI]

    Zhou, Shengli

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

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

    E-Print Network [OSTI]

    Dutta, Seemanta

    2012-01-01T23:59:59.000Z

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

  6. Mobile RobotsSensor Networks Autonomous Sensor/Actuator Networks

    E-Print Network [OSTI]

    Breu, Ruth

    mobile networks with dynamic topology Optimized task allocation and communication based on application and energy constraints Secure communication and data management in mobile sensor networks Solution SpaceMobile RobotsSensor Networks Autonomous Sensor/Actuator Networks ROSES RObot assisted SEnsor

  7. Energy Management in Wireless Sensor Network Operations 

    E-Print Network [OSTI]

    Mohapatra, Arupa Kumar

    2013-07-26T23:59:59.000Z

    problem (Case I), we consider minimizing energy and node replacement costs in underwater wireless sensor networks for seismic monitoring application. In this case, we introduce mixed-integer programming (MIP) formulations based on a combined routing...

  8. Challenges for Efficient Communication in Underwater Acoustic Sensor Networks

    E-Print Network [OSTI]

    Pompili, Dario

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

  9. Prolonging Network Lifetime for Target Coverage in Sensor Networks

    E-Print Network [OSTI]

    Liang, Weifa

    limits the network lifetime and impairs the network quality. To prolong the network lifetime, energy-efficiency network used for monitoring targets. One efficient method of reducing the energy consumption of sensors Department of Computer Science, The Australian National University Canberra, ACT 0200, Australia Abstract

  10. INTERACTING WITH SOCIAL NETWORKS TO IMPROVE HEALTHCARE BODY SENSOR NETWORKS

    E-Print Network [OSTI]

    Miles, Will

    INTERACTING WITH SOCIAL NETWORKS TO IMPROVE HEALTHCARE BODY SENSOR NETWORKS by DAVID BAUSCHLICHER monitor and record data while minimizing the energy expenditure of nodes in the BSN. Social networking to a social network creates the unique ability to share health related data with other users through social

  11. air pollutant monitoring: Topics by E-print Network

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

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

  12. 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...

  13. Robust Clock Synchronization Methods for Wireless Sensor Networks

    E-Print Network [OSTI]

    Lee, Jae Han

    2011-10-21T23:59:59.000Z

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

  14. Cognitive Radio Networks as Sensor Networks

    E-Print Network [OSTI]

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

    2007-01-01T23:59:59.000Z

    assuming the cognitive radios know their own coordinates.Networked Sensing Cognitive Radio Networks As SensorIntroduction: Cognitive Radio (CR) Networks The Need For

  15. Wireless Sensor Networks for Home Health Care

    E-Print Network [OSTI]

    2007-01-01T23:59:59.000Z

    Wireless Sensor Networks for Home Health Care Chris R.Cooperation between wireless sensor networks and existingapplications of wireless sensor networks. In this paper we

  16. Special Issue on “Wireless Sensor Networks

    E-Print Network [OSTI]

    Yao, Kung; Zhang, Qian; Zhao, Qing

    2009-01-01T23:59:59.000Z

    Special Issue on “Wireless Sensor Networks” Kung Yao & Qianand tracking, etc. Wireless sensor networks utilize theaspects of wireless sensor networks. The first paper, “

  17. Data Transport Control in Wireless Sensor Networks

    E-Print Network [OSTI]

    Zhang, Hongwei; Naik, Vinayak S

    2008-01-01T23:59:59.000Z

    Congestion in Wireless Sensor Networks. ACM SenSys SandeepJohn Anderson (2002). Wireless Sensor Networks for HabitatWorkshop on Wireless Sensor Networks and Applications Miklos

  18. SeRLoc: Robust Localization for Wireless Sensor Networks

    E-Print Network [OSTI]

    Hochberg, Michael

    SeRLoc: Robust Localization for Wireless Sensor Networks LOUKAS LAZOS and RADHA POOVENDRAN University of Washington Many distributed monitoring applications of Wireless Sensor Networks (WSNs) require of Wireless Sensor Networks to determine their location in an untrusted environment, known as the secure

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

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

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

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

    E-Print Network [OSTI]

    Allen, Michael

    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 ...

  1. Ultra-wideband radar sensors and networks

    DOE Patents [OSTI]

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

    2013-08-06T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Halgamuge, Malka N.

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

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

    E-Print Network [OSTI]

    Hexmoor, Henry

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

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

    E-Print Network [OSTI]

    Spagnolini, Umberto

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

  5. Wireless sensor networks for measuring traffic

    E-Print Network [OSTI]

    Varaiya, Pravin

    Wireless sensor networks for measuring traffic University of California, Berkeley Sing Yiu Cheung, Sinem Coleri, and Pravin Varaiya 2 Outline · Traffic measurement · Wireless Sensor Networks · Vehicle wireless sensor networks compete? 7 Outline · Traffic measurement · Wireless Sensor Networks · Vehicle

  6. Network Embedded Systems Sensor Networks

    E-Print Network [OSTI]

    Amir, Yair

    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

  7. Modular sensor network node

    DOE Patents [OSTI]

    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

    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.

  8. FUNDAMENTAL PERFORMANCE LIMITS OF WIRELESS SENSOR NETWORKS

    E-Print Network [OSTI]

    Li, Baochun

    FUNDAMENTAL PERFORMANCE LIMITS OF WIRELESS SENSOR NETWORKS ZHIHUA HU, BAOCHUN LI Abstract. Understanding the fundamental performance limits of wireless sensor networks is critical towards. Key words. Wireless sensor networks, network capacity, network lifetime. 1. Introduction. When

  9. Optimized Node Selection for Compressive Sleeping Wireless Sensor Networks

    E-Print Network [OSTI]

    Chen, Wei; Wassell, Ian J.

    2015-02-05T23:59:59.000Z

    1Optimized Node Selection for Compressive Sleeping Wireless Sensor Networks Wei Chen, Member, IEEE, and Ian J. Wassell Abstract—In this paper, we propose an active node selection framework for compressive sleeping wireless sensor networks (WSNs... development oftechnologies in sensing, computing and communication has made it possible to employ wireless sensor networks (WSNs) to continuously monitor physical phenomena in a variety of applications, for example air quality monitoring, wildlife tracking...

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

    E-Print Network [OSTI]

    Qiao, Daji

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

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

    E-Print Network [OSTI]

    Cardei, Mihaela

    1 Energy-Efficient Data Gathering in Heterogeneous Wireless Sensor Networks Wael Awada and Mihaela of energy constrained wireless sensor nodes. Sensor nodes are deployed randomly to monitor a number of targets. Since targets are redundantly covered by more sensors, in order to conserve energy resources, we

  12. Radionuclide Sensors for Water Monitoring

    SciTech Connect (OSTI)

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

    2003-06-01T23:59:59.000Z

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

  13. Radionuclide Sensors for Water Monitoring

    SciTech Connect (OSTI)

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

    2004-06-29T23:59:59.000Z

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

  14. Perimeter Coverage Made Practical in Wireless Sensor Networks

    E-Print Network [OSTI]

    Tam, Vincent W. L.

    the minimum set of sensors and the set of sensors with the minimum cost to monitor the target. Unfortunately (MC). By using MC to monitor the target object, the energy expenditure is minimal. In [9], Chow et. al-related cost metrics, using MCC to monitor the target object maybe more effective in maximizing the network

  15. Three-Dimensional Routing in Underwater Acoustic Sensor Networks

    E-Print Network [OSTI]

    Pompili, Dario

    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

  16. Scheduling Sensor Activity for Point Information Coverage in Wireless Sensor Networks

    E-Print Network [OSTI]

    Srinivasan, Vikram

    , to monitor some targets of interests at all times. Sensors are often equipped with non-rechargeable batteries such that all targets can be monitored all the time and the network can operate as long as possible. A solution network is the coverage problem [2], which addresses how well a target area is monitored. In some

  17. A network security monitor

    SciTech Connect (OSTI)

    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

    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.

  18. Optimal Deployment of Large Wireless Sensor Networks

    E-Print Network [OSTI]

    Toumpis, Stavros

    1 Optimal Deployment of Large Wireless Sensor Networks S. Toumpis, Member, IEEE, and Leandros, Sensor networks. I. INTRODUCTION A. Wireless Sensor Networks Wireless sensor networks are comprised of sensors that are equipped with wireless transceivers and so are able to form a wireless network [3

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

    E-Print Network [OSTI]

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

    2011-01-01T23:59:59.000Z

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

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

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

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

  1. Sensor Grid: Integration of Wireless Sensor Networks and the Grid

    E-Print Network [OSTI]

    Teo, Yong-Meng

    Sensor Grid: Integration of Wireless Sensor Networks and the Grid Hock Beng Lim1 , Yong Meng Teo1 Microsystems, Inc. E-mail: [limhb, teoym]@comp.nus.edu.sg Abstract Wireless sensor networks have emerged to the sharing of sensor resources in wireless sensor networks. There are several issues and challenges

  2. Wireless Sensor Network Infrastructure : Construction and Evaluation

    E-Print Network [OSTI]

    Boyer, Edmond

    Wireless Sensor Network Infrastructure : Construction and Evaluation Kamal Beydoun, Violeta Felea main features for efficient energy management in wireless sensor networks. This paper aims to present a distributed and low-cost topology construction algorithm for wireless sensor networks, addressing

  3. Local Vote Decision Fusion for Target Detection in Wireless Sensor Networks

    E-Print Network [OSTI]

    Michailidis, George

    1 Local Vote Decision Fusion for Target Detection in Wireless Sensor Networks Natallia Katenka by a wireless sensor network. Sensors acquire measurements emitted from the target that are corrupted by noise Wireless sensor networks are widely used for monitoring natural phenomena in space and over time, as well

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

    E-Print Network [OSTI]

    Pompili, Dario

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

  5. Characterization monitoring & sensor technology crosscutting program

    SciTech Connect (OSTI)

    NONE

    1996-08-01T23:59:59.000Z

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

  6. Cubic-based 3-D Localization for Wireless Sensor Networks

    E-Print Network [OSTI]

    Shwe, Hnin Yu; Chong, Peter HJ

    2013-01-01T23:59:59.000Z

    Scheme in Stereo Wireless Sensor Networks,” in Advances infor mobile wireless sensor networks," Ad Hoc Networks, vol.and B. D. O. Anderson, "Wireless sensor network localization

  7. Passive Loss Inference in Wireless Sensor Networks Based on Network Coding

    E-Print Network [OSTI]

    Li, Baochun

    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

  8. Energy savings in wireless ad hoc sensor networks as a result of network synchronisation

    E-Print Network [OSTI]

    Haddadi, Hamed

    Energy savings in wireless ad hoc sensor networks as a result of network synchronisation Antonio of oceanographic monitoring using a collegiate-managed autonomous network of energy-conscious wireless sensors. We-to-node synchronised transmissions in order to reduce overhearing and therefore reduce energy expenses. SSSNP (Self

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

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

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

  10. Energy Harvesting for Structural Health Monitoring Sensor Gyuhae Park1

    E-Print Network [OSTI]

    Simunic, Tajana

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

  11. Optimal Deployment of Impromptu Wireless Sensor Networks

    E-Print Network [OSTI]

    Kumar, Anurag

    Optimal Deployment of Impromptu Wireless Sensor Networks Prasenjit Mondal, K. P. Naveen and Anurag to deploy sensors (such as motion sensors, or even imaging sensors) and a wireless interconnection network an impromptu deploy- ment of a wireless sensor network in a building. Fig. 2. Problem studied in this paper

  12. On the robustness of clustered sensor networks 

    E-Print Network [OSTI]

    Cho, Jung Jin

    2009-05-15T23:59:59.000Z

    Smart devices with multiple on-board sensors, networked through wired or wireless links, are distributed in physical systems and environments. Broad applications of such sensor networks include manufacturing quality control and wireless sensor...

  13. Issues in autonomous mobile sensor networks

    E-Print Network [OSTI]

    Dharne, Avinash Gopal

    2009-05-15T23:59:59.000Z

    Autonomous mobile sensor networks consist of a number of autonomous mobile robots equipped with various sensors and tasked with a common mission. This thesis considers the topology control of such an ad hoc mobile sensor network. In particular, I...

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

    E-Print Network [OSTI]

    Pompili, Dario

    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

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

    E-Print Network [OSTI]

    Melodia, Tommaso

    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

  16. High Performance Network Monitoring

    SciTech Connect (OSTI)

    Martinez, Jesse E [Los Alamos National Laboratory

    2012-08-10T23:59:59.000Z

    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.

  17. Energy Efficient Distributed Data Fusion In Multihop Wireless Sensor Networks

    E-Print Network [OSTI]

    Huang, Yi

    2010-01-01T23:59:59.000Z

    processing for a wireless sensor networks. Each circle ’S’techniques in wireless sensor networks: A survey,” IEEEestimation for wireless sensor networks, part i: Gaussian

  18. Improving the performance of distributed simulations of wireless sensor networks

    E-Print Network [OSTI]

    Jin, Zhong-Yi

    2010-01-01T23:59:59.000Z

    Overview of Wireless Sensor Networks . . 2.1.2 Difficultiesin parallel a wireless sensor network with two duty cycledin parallel a wireless sensor network with three nodes that

  19. Scalable Coverage Maintenance for Dense Wireless Sensor Networks

    E-Print Network [OSTI]

    Lu, Jun; Wang, Jinsu; Suda, Tatsuya

    2007-01-01T23:59:59.000Z

    get coverage in wireless sensor networks,” in Proceedings ofscheme for large wireless sensor networks,” in Pro- ceedingsWorkshop on Wireless Sensor Networks and Applications (

  20. Data-driven modeling of phenomena in wireless sensor networks

    E-Print Network [OSTI]

    Kamthe, Ankur U.

    2012-01-01T23:59:59.000Z

    experimentation in wireless sensor networks. Commun. ACM,of Phenomena in Wireless Sensor Networks A dissertationBoavida, editors, Wireless Sensor Networks, volume 5970 of

  1. Reliable and Efficient Programming Abstractions for Wireless Sensor Networks

    E-Print Network [OSTI]

    Kothari, Nupur; Gummadi, Ramakrishna; Millstein, Todd; Govindan, Ramesh

    2007-01-01T23:59:59.000Z

    Macro-programming wireless sensor networks using Kairos. InAbstractions for Wireless Sensor Networks Nupur Kothari ?Keywords Wireless Sensor Networks, Macroprogramming, En-

  2. A wireless sensor network (WSN) may run different applications for different

    E-Print Network [OSTI]

    Braun, Torsten

    A wireless sensor network (WSN) may run different applications for different tasks, such as event Wireless Sensor Networks, which sup- ports common management tasks such as visualization, monitoring, (re the communication gateway between these sensor sub-networks, the WSN and the Internet. Wireless mesh nodes perform

  3. Mixed potential sensors for CO monitoring

    SciTech Connect (OSTI)

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

    2001-01-01T23:59:59.000Z

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

  4. Radioactive Target Detection Using Wireless Sensor Network

    E-Print Network [OSTI]

    Zhang, Tonglin

    Chapter 31 Radioactive Target Detection Using Wireless Sensor Network Tonglin Zhang Abstract for wireless sensor network data to detect and locate a hidden nuclear target in a large study area. The method assumes multiple radiation detectors have been used as sensor nodes in a wireless sensor network

  5. DISTRIBUTED OPPORTUNISTIC TRANSMISSION FOR WIRELESS SENSOR NETWORKS

    E-Print Network [OSTI]

    Islam, M. Saif

    DISTRIBUTED OPPORTUNISTIC TRANSMISSION FOR WIRELESS SENSOR NETWORKS Qing Zhao and Lang Tong School Strategy We consider the problem of information retrieval in sensor networks with mobile access points on Communica- tion and Networks under Grant DAAD19-01-2-0011. ¢ Fig. 1: Sensor networks with mobile access

  6. The Tenet Architecture for Tiered Sensor Networks

    E-Print Network [OSTI]

    2006-01-01T23:59:59.000Z

    architec- ture for structural health monitoring. In S. -C.network for structural health monitoring: Performance and

  7. COMPRESSIVE LINEAR NETWORK CODING FOR EFFICIENT DATA COLLECTION IN WIRELESS SENSOR NETWORKS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    COMPRESSIVE LINEAR NETWORK CODING FOR EFFICIENT DATA COLLECTION IN WIRELESS SENSOR NETWORKS fields, Wireless Sensor Networks Index Terms-- Belief Propagation, Network Coding, Fi- nite fields, Wireless Sensor Networks 1. INTRODUCTION A Wireless Sensor Network (WSN) consists of spatially dis

  8. Gas Main Sensor and Communications Network System

    SciTech Connect (OSTI)

    Hagen Schempf

    2006-05-31T23:59:59.000Z

    Automatika, Inc. was contracted by the Department of Energy (DOE) and with co-funding from the Northeast Gas Association (NGA), to develop an in-pipe natural gas prototype measurement and wireless communications system for assessing and monitoring distribution networks. This projected was completed in April 2006, and culminated in the installation of more than 2 dozen GasNet nodes in both low- and high-pressure cast-iron and steel mains owned by multiple utilities in the northeastern US. Utilities are currently logging data (off-line) and monitoring data in real time from single and multiple networked sensors over cellular networks and collecting data using wireless bluetooth PDA systems. The system was designed to be modular, using in-pipe sensor-wands capable of measuring, flow, pressure, temperature, water-content and vibration. Internal antennae allowed for the use of the pipe-internals as a waveguide for setting up a sensor network to collect data from multiple nodes simultaneously. Sensor nodes were designed to be installed with low- and no-blow techniques and tools. Using a multi-drop bus technique with a custom protocol, all electronics were designed to be buriable and allow for on-board data-collection (SD-card), wireless relaying and cellular network forwarding. Installation options afforded by the design included direct-burial and external polemounted variants. Power was provided by one or more batteries, direct AC-power (Class I Div.2) and solar-array. The utilities are currently in a data-collection phase and intend to use the collected (and processed) data to make capital improvement decisions, compare it to Stoner model predictions and evaluate the use of such a system for future expansion, technology-improvement and commercialization starting later in 2006.

  9. Millimeter wave sensor for monitoring effluents

    DOE Patents [OSTI]

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

    1995-01-01T23:59:59.000Z

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

  10. Sensor network localization based on natural phenomena

    E-Print Network [OSTI]

    Kim, Daniel Sang

    2006-01-01T23:59:59.000Z

    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 ...

  11. Adaptive sampling in autonomous marine sensor networks

    E-Print Network [OSTI]

    Eickstedt, Donald Patrick

    2006-01-01T23:59:59.000Z

    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. ...

  12. Underwater Data Collection Using Robotic Sensor Networks

    E-Print Network [OSTI]

    Hollinger, Geoffrey A.

    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 ...

  13. Extension of the Semantic Sensor Network Ontology for Wireless Sensor Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Extension of the Semantic Sensor Network Ontology for Wireless Sensor Networks: The Stimulus Wireless Se- mantic Sensor Network ontology, in an agri-environmental scenario to illustrate the interest technolo- gies, Wireless Sensor Network (WSN) becomes widely used. WSN usually consists of a set

  14. SENSID: a Sensor Network Situation

    E-Print Network [OSTI]

    Cardell-Oliver, Rachel

    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

  15. Energy efficient sensor network implementations

    SciTech Connect (OSTI)

    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

    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.

  16. Adaptive Routing in Underwater Delay/Disruption Tolerant Sensor Networks

    E-Print Network [OSTI]

    Cui, Jun-Hong

    , 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

  17. Gradient Clock Synchronization in Wireless Sensor Networks

    E-Print Network [OSTI]

    Gradient Clock Synchronization in Wireless Sensor Networks Philipp Sommer Computer Engineering- olution. Without doubt, time is a first-class citizen in wireless sensor networks. Without accurate time if the nodes in the wireless sensor network manage to have an adequate agreement of time. Indeed

  18. A Virtual Infrastructure for Wireless Sensor Networks

    E-Print Network [OSTI]

    Stojmenovic, Ivan

    &CHAPTER 4 A Virtual Infrastructure for Wireless Sensor Networks STEPHAN OLARIU and QINGWEN XU Old, and wireless communications 107 Handbook of Sensor Networks: Algorithms and Architectures, Edited by I and communication infra- structures, called wireless sensor networks, will have a significant impact on a wide array

  19. Detecting Phantom Nodes in Wireless Sensor Networks

    E-Print Network [OSTI]

    Kim, Dae-Shik

    Detecting Phantom Nodes in Wireless Sensor Networks Joengmin Hwang, Tian He and Yongdae Kim With thousands of tiny devices, Wireless Sensor Networks (WSNs) can support ubiquitous surveillance with a very number of phantom nodes. Key words: Sensor networks, localization, secure localization, location

  20. Environmental Cyberinfrastructure Needs For Distributed Sensor Networks

    E-Print Network [OSTI]

    Hamilton, Michael P.

    1 Environmental Cyberinfrastructure Needs For Distributed Sensor Networks 12-14 August 2003;2 Environmental Cyberinfrastructure Needs for Distributed Sensor Networks A Report from a National Science Cyberinfrastructure Needs for Distributed Sensor Networks: A Report from a National Science Foundation Sponsored

  1. Converging Redundant Sensor Network Information for Improved Building Control

    SciTech Connect (OSTI)

    Dale K. Tiller; Gregor P. Henze

    2005-12-01T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Lu, Chenyang

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

  3. Soft Sensors for Process Monitoring of Complex Processes 

    E-Print Network [OSTI]

    Serpas, Mitchell Roy

    2012-10-19T23:59:59.000Z

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

  4. International Workshop on Structural Control, Columbia University, New York, June 2004. Networked Sensing for Structural Health Monitoring

    E-Print Network [OSTI]

    Govindan, Ramesh

    . Networked Sensing for Structural Health Monitoring John Caffrey, Ramesh Govindan, Erik Johnson, Bhaskar networked sensing for structural health monitoring applications. The vision is of many low-power sensor and algorithms for distributed wireless sensor/actuator structural health monitoring networks. INTRODUCTION

  5. Antenna-based "Smart Skin" Sensors for Sustainable, Wireless Sensor Networks

    E-Print Network [OSTI]

    Tentzeris, Manos

    Antenna-based "Smart Skin" Sensors for Sustainable, Wireless Sensor Networks Hoseon Leet, George-less, or sustainable, wireless sensor networks with "smart skin" sensor nodes. These sensors are highly applicable a wireless sensor network with smart sensors requires a lot of power due to the mass number of sensor nodes

  6. Converging Redundant Sensor Network Information for Improved Building Control

    SciTech Connect (OSTI)

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

    2007-09-30T23:59:59.000Z

    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.

  7. General Network Lifetime and Cost Models for Evaluating Sensor Network

    E-Print Network [OSTI]

    Heinzelman, Wendi

    General Network Lifetime and Cost Models for Evaluating Sensor Network Deployment Strategies Zhao Cheng, Mark Perillo, and Wendi B. Heinzelman, Senior Member, IEEE Abstract--In multihop wireless sensor to energy imbalance among sensors often appear. Sensors closer to a data sink are usually required

  8. Performance Characterization of Random Proximity Sensor Networks

    E-Print Network [OSTI]

    Jensen, Grant J.

    Performance Characterization of Random Proximity Sensor Networks Agostino Capponi Department-- In this paper, we characterize the localization per- formance and connectivity of sensors networks consisting for signal processing. Each sensor has severe constraints on the battery power, and can only communicate

  9. Distributed A Wireless Sensor Network for

    E-Print Network [OSTI]

    Distributed Computing A Wireless Sensor Network for Orienteering Competitions Master's Thesis-wave Monopole Antennas . . . . . . . . . . . . . 13 5 MAC and Routing in Wireless Sensor Networks 14 5.1 Medium and waterproof cases free of charge. i #12;Abstract This thesis deals with the development of a wireless sensor

  10. Algorithms For Wireless Sensor Networks Sartaj Sahni and Xiaochun Xu

    E-Print Network [OSTI]

    Sahni, Sartaj K.

    Algorithms For Wireless Sensor Networks Sartaj Sahni and Xiaochun Xu Department of Computer for wireless sensor networks. We focus on sensor deployment and coverage, routing and sensor fusion. Keywords: Wireless sensor networks, algorithms, routing, coverage, fusion. 1 Introduction A wireless sensor network

  11. Radionuclide Sensors for Subsurface Water Monitoring

    SciTech Connect (OSTI)

    Timothy DeVol

    2006-06-30T23:59:59.000Z

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

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

    SciTech Connect (OSTI)

    Yi Jia

    2011-02-28T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

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

  14. Sensor network based vehicle classification and license plate identification system

    SciTech Connect (OSTI)

    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

    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.

  15. Electrochemical NOx Sensor for Monitoring Diesel Emissions

    SciTech Connect (OSTI)

    Woo, L Y; Glass, R S

    2008-11-14T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Heidemann, John

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

  17. Compiling functional reactive macroprograms for sensor networks

    E-Print Network [OSTI]

    Newton, Ryan Rhodes, 1980-

    2005-01-01T23:59:59.000Z

    Sensor networks present a number of novel programming challenges for application developers. Their inherent limitations of computational power, communication bandwidth, and energy demand new approaches to programming that ...

  18. WIRELESS SENSOR NETWORK BASED CONTROL SYSTEM CONCIDERING COMMUNICATION COST

    E-Print Network [OSTI]

    WIRELESS SENSOR NETWORK BASED CONTROL SYSTEM CONCIDERING COMMUNICATION COST Yutaka Iino* Takeshi for wireless sensor network based control system, minimizing communication energy consumption. Some control, wireless sensor network technology has been developed rapidly, and various applications to control system

  19. Interference-Aware Fair Rate Control in Wireless Sensor Networks

    E-Print Network [OSTI]

    Rangwala, Sumit; Gummadi, Ramakrishna; Govindan, Ramesh; Psounis, Konstantinos

    2006-01-01T23:59:59.000Z

    Protocol For Wireless Sensor Networks. In WSNA ’02. [30]Congestion in Wireless Sensor Networks. In SenSys ’04. [12]Y. Lei. A Two-Tier Wireless Sensor Network Architecture for

  20. Tracking Multiple Targets Using Binary Decisions from Wireless Sensor Networks

    E-Print Network [OSTI]

    Michailidis, George

    Tracking Multiple Targets Using Binary Decisions from Wireless Sensor Networks Natallia Katenka- tions. 1 #12;Keywords: wireless sensor networks, binary data, target tracking, multiple targets, penal- ized maximum likelihood 1 Introduction and Problem Motivation Wireless Sensor Networks (WSN) have

  1. Data Analysis and Query Processing in Wireless Sensor Networks

    E-Print Network [OSTI]

    Chatzimilioudis, Georgios

    2010-01-01T23:59:59.000Z

    5.2.2 Wireless Sensor Networks . . . . . . . . 5.33.1 De?nition of a Wireless Sensor Network . . . . . . .1.1 Introduction to Wireless Sensor Networks 1.2 Motivating

  2. Structural health monitoring sensor development for the Imote2 platform

    E-Print Network [OSTI]

    Spencer Jr., B.F.

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

  3. Robust Clock Synchronization in Wireless Sensor Networks

    E-Print Network [OSTI]

    Saibua, Sawin

    2010-10-12T23:59:59.000Z

    Clock synchronization between any two nodes in a Wireless Sensor Network (WSNs) is generally accomplished through exchanging messages and adjusting clock offset and skew parameters of each node’s clock. To cope with unknown network message delays...

  4. Wireless sensor networks for off-shore oil and gas installations

    E-Print Network [OSTI]

    Gjessing, Stein

    1 Wireless sensor networks for off-shore oil and gas installations Martin Dalbro, Erik Eikeland ­ Underwater development and production of oil and gas needs networked sensors and actuators to monitor the production process, to either prevent or detect oil and gas leakage or to enhance the production flow

  5. A Biologically Inspired Networking Model for Wireless Sensor Networks 

    E-Print Network [OSTI]

    Charalambous, Charalambos

    2011-02-22T23:59:59.000Z

    in sensor nodes demand energy-aware network control. In this thesis, we propose an energy- efficient topology management model inspired by biological inter-cellular signaling schemes. The model allows sensor nodes to cluster around imminent targets in a...

  6. Online Data Gathering for Maximizing Network Lifetime in Sensor Networks

    E-Print Network [OSTI]

    Liang, Weifa

    database, sensornet query optimization. Ç 1 INTRODUCTION RECENT advances in microelectronic technology have, IEEE, and Yuzhen Liu Abstract--Energy-constrained sensor networks have been deployed widely sensors have significant power constraints (battery life), energy efficient methods must be employed

  7. Aquatic Debris Monitoring Using Smartphone-Based Robotic Sensors

    E-Print Network [OSTI]

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

  8. Sensor Wars: Detecting and Defending Against Spam Attacks in Wireless Sensor Networks

    E-Print Network [OSTI]

    Levi, Albert

    network are discussed in [7]. Security, network bandwidth and power consumption in sensor networksSensor Wars: Detecting and Defending Against Spam Attacks in Wireless Sensor Networks Serdar Sancak@sabanciuniv.edu Abstract--Anti-nodes deployed inside a wireless sensor network can frequently generate dummy data packets

  9. Optimize Storage Placement in Sensor Networks

    E-Print Network [OSTI]

    Li, Qun

    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

  10. Maximum Network Lifetime in Wireless Sensor Networks with Adjustable Sensing Ranges

    E-Print Network [OSTI]

    Wu, Jie

    1 Maximum Network Lifetime in Wireless Sensor Networks with Adjustable Sensing Ranges Mihaela problem in wireless sensor networks with adjustable sensing range. Communication and sensing consume Wireless sensor networks (WSNs) constitute the foundation of a broad range of applications related

  11. Energy-Efficient Target Coverage in Wireless Sensor Networks

    E-Print Network [OSTI]

    Cardei, Mihaela

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

  12. Underwater Sensor Network Deployment for Water Quality Nadjib ACHIR and Khaled BOUSSETTA

    E-Print Network [OSTI]

    Zhou, Shengli

    of this evolution, underwater sensors could now be organized as an autonomous communicating network. Under and tsunami monitoring) etc. Moreover, the particularity of the underwater context (e.g. the long delay

  13. Development of an Event Detection System Based on a Wireless Sensor Network 

    E-Print Network [OSTI]

    Bermingham, Louise

    2011-08-10T23:59:59.000Z

    The focus of this research is to develop an event detection system for groundwater flooding. The groundwater monitoring infrastructure is based on a Wireless Sensor Network, which can often lead to corrupted data values. The event detection system...

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

    E-Print Network [OSTI]

    Basha, Elizabeth (Elizabeth Ann)

    2010-01-01T23:59:59.000Z

    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 ...

  15. 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...

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

    E-Print Network [OSTI]

    Boyer, Edmond

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

  17. Combinatorial Design of Key Distribution Mechanisms for Wireless Sensor Networks

    E-Print Network [OSTI]

    Bystroff, Chris

    Combinatorial Design of Key Distribution Mechanisms for Wireless Sensor Networks Seyit A. C¸amtepe1 of the most challenging security issues in wireless sensor networks where sensor nodes are randomly scattered-chain sizes. 1 Introduction and Problem Definition In this work, we consider a sensor network in which sensor

  18. Combinatorial Design of Key Distribution Mechanisms for Wireless Sensor Networks

    E-Print Network [OSTI]

    Bystroff, Chris

    Combinatorial Design of Key Distribution Mechanisms for Wireless Sensor Networks Seyit A. C� amtepe of the most challenging security issues in wireless sensor networks where sensor nodes are randomly scattered­chain sizes. 1 Introduction and Problem Definition In this work, we consider a sensor network in which sensor

  19. Position Estimation With Moving Beacons in Wireless Sensor Networks

    E-Print Network [OSTI]

    Dong, Liang

    Position Estimation With Moving Beacons in Wireless Sensor Networks Liang Dong and Frank L nodes in a wireless sensor network. Without GPS capability on any of the sensors, the position issue in wireless sensor networks. Accurate positions of sensor nodes improve the routing efficiency

  20. PSFQ: A Reliable Transport Protocol for Wireless Sensor Networks

    E-Print Network [OSTI]

    Han, Richard Y.

    PSFQ: A Reliable Transport Protocol for Wireless Sensor Networks Chieh-Yih Wan Dept. of Electrical class of reliable data applications emerging in wireless sensor networks. For example, currently sensor of sensors in wireless sensor networks on the fly (e.g., during disaster recovery). Due to the application

  1. SENSOR PLACEMENT FOR MAXIMIZING LIFETIME PER UNIT COST IN WIRELESS SENSOR NETWORKS

    E-Print Network [OSTI]

    Chuah, Chen-Nee

    SENSOR PLACEMENT FOR MAXIMIZING LIFETIME PER UNIT COST IN WIRELESS SENSOR NETWORKS Yunxia Chen in a wireless sensor network (WSN). Analyzing the lifetime per unit cost of a linear WSN, we find that deploying of sensors deployed in the network, can be used to measure the utilization efficiency of sensors

  2. Heterogeneous Wireless Sensor Network Deployment and Topology Control Based on Irregular Sensor Model

    E-Print Network [OSTI]

    Chung, Yeh-Ching

    Heterogeneous Wireless Sensor Network Deployment and Topology Control Based on Irregular Sensor Introduction Wireless sensor network (WSN) is a key element of the pervasive/ubiquitous computing sensor network (heterogeneous WSN) consists of sensor nodes with different ability, such as different

  3. Body Area Networks & Pervasive Health Monitoring Recent advances in microelectronics and wireless

    E-Print Network [OSTI]

    , intelligent endoscope capsules, glucose monitors and eye pressure sensing systems. Similarly, wearable sensors the development of efficient energy-management protocols for low-power wearable medical sensors. · InterferenceBody Area Networks & Pervasive Health Monitoring Recent advances in microelectronics and wireless

  4. SensorGrid: Integrating Sensor Networks and Grid Computing Chen-Khong Tham1

    E-Print Network [OSTI]

    Melbourne, University of

    SensorGrid: Integrating Sensor Networks and Grid Computing Chen-Khong Tham1 and Rajkumar Buyya2 Keywords: Sensors, Sensor Networks, Grid computing, SensorML, SensorWeb. 1. Introduction Recent advances in electronic circuit miniaturization and micro-electromechanical systems (MEMS) have led to the creation

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

    E-Print Network [OSTI]

    Boyer, Edmond

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

  6. Key Predistribution Techniques for Grid-Based Wireless Sensor Networks

    E-Print Network [OSTI]

    Key Predistribution Techniques for Grid-Based Wireless Sensor Networks Simon R. Blackburn1 , Tuvi sensor networks. Networks consisting of wireless sensor nodes ar- ranged in a grid pattern have many for the instantiation of these schemes. Key words: Key predistribution, wireless sensor networks; symmetric key

  7. Wireless Sensor Network Energy Conversation Nathan A. Menhorn

    E-Print Network [OSTI]

    Wireless Sensor Network Energy Conversation Techniques Nathan A. Menhorn October 20, 2005 #12;Contents 1 Introduction to Wireless Sensor Networks 3 1.1 General Overview A Wireless Sensor Network Glossary 68 2 #12;Chapter 1 Introduction to Wireless Sensor Networks 1.1 General

  8. Distributed Estimation in Sensor Networks with Modeling Uncertainty

    E-Print Network [OSTI]

    Zhou, Qing

    2013-05-07T23:59:59.000Z

    A major issue in distributed wireless sensor networks (WSNs) is the design of efficient distributed algorithms for network-wide dissemination of information acquired by individual sensors, where each sensor, by itself, is unable to access enough...

  9. 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

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

    E-Print Network [OSTI]

    Giurgiutiu, Victor

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

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

    E-Print Network [OSTI]

    Giurgiutiu, Victor

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

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

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

  13. CONVERGING REDUNDANT SENSOR NETWORK INFORMATION FOR IMPROVED BUILDING CONTROL

    SciTech Connect (OSTI)

    Dale K. Tiller; Gregor P. Henze

    2004-11-01T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Madhow, Upamanyu

    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

  15. Networking Issues in Wireless Sensor Networks Deepak Ganesan , Alberto Cerpa , Wei Ye , Yan Yu ,

    E-Print Network [OSTI]

    Cerpa, Alberto E.

    autonomously, and in many cases, without access to renewable energy resources. Cost constraints and the need such as climate monitoring in the canopies, sensor nodes may not be able to renew their energy resources. A major trends in the com- ing decades [1] has posed numerous unique challenges to researchers. These networks

  16. Controlled mobility in sensor networks

    E-Print Network [OSTI]

    Sugihara, Ryo

    2009-01-01T23:59:59.000Z

    Example: Structural Health Monitoring 2.2.2 Systems andworkshop on Structural Health Monitoring, 2007. [TPS + 05]target tracking, structural health monitoring, and so on.

  17. Ourmon and Network Monitoring Performance James R. Binkley Bart Massey

    E-Print Network [OSTI]

    Massey, Bart

    at Portland State University. Ourmon monitors a target network both to highlight ab- normal network traffic

  18. Exploring Architectural Challenges in Scalable Underwater Wireless Sensor Networks

    E-Print Network [OSTI]

    Shi, Zhijie Jerry

    1 Exploring Architectural Challenges in Scalable Underwater Wireless Sensor Networks Z. Jerry Shi and Yunsi Fei Department of Computer Science and Engineering Department of Electrical and Computer sensor networks (UWSNs): Aquatic applications Design challenges in UWSNs ­ Communications ­ Networking

  19. Configurable dynamic privacy for pervasive sensor networks

    E-Print Network [OSTI]

    Gong, Nan-Wei

    2009-01-01T23:59:59.000Z

    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 ...

  20. Robust Cubic-Based 3-D Localization for Wireless Sensor Networks

    E-Print Network [OSTI]

    Shwe, Hnin Y; Wang, Chenchao; Chong, Peter Han Joo; Kumar, Arun

    2013-01-01T23:59:59.000Z

    tion for Mobile Wireless Sensor Networks,” Ad Hoc Net-tion for Mobile Wireless Sensor Networks,” Ad Hoc Net-Scheme in Stereo Wireless Sensor Networks,” Advances in

  1. Statistical Wormhole Detection in Sensor Networks

    E-Print Network [OSTI]

    Bencsáth, Boldizsár

    station that runs the algorithms on the network graph that is reconstructed from the received neighborhood. In order to reduce the overall energy consumption of the sensors, it is conceived that the sensors send is a dedicated connection between two physical locations. The ad- versary installs a radio transceiver at each

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

    E-Print Network [OSTI]

    Huang, Yan

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

  3. Host Event Based Network Monitoring

    SciTech Connect (OSTI)

    Jonathan Chugg

    2013-01-01T23:59:59.000Z

    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.

  4. Radiation detection and situation management by distributed sensor networks

    SciTech Connect (OSTI)

    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

    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.

  5. CTA: a Collaborative Tracking Algorithm in Wireless Sensor Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    CTA: a Collaborative Tracking Algorithm in Wireless Sensor Networks Ibtissem Boulanouar, Stéphane. A Wireless Sensor Network (WSN) consists of a set of Wireless Sensors which can harvest, process and share flows. Thus, we observe the emergence of Wireless Multimedia Sensor Networks (WMSN). These WMSN offer

  6. Coverage Properties of the Target Area in Wireless Sensor Networks

    E-Print Network [OSTI]

    Zuyev, Sergei

    1 Coverage Properties of the Target Area in Wireless Sensor Networks Xiaoyun Li, Member, IEEE is developed for the probability of sensing coverage in a wireless sensor network with randomly deployed sensor examined. These results will have applications in planning and design tools for wireless sensor networks

  7. Threshold-Controlled Global Cascading in Wireless Sensor Networks

    E-Print Network [OSTI]

    Varela, Carlos

    Threshold-Controlled Global Cascading in Wireless Sensor Networks Qiming Lu and G. Korniss is a challenging task. Wireless Sensor Networks (WSNs) provide an example where understanding dynamical processes and other wireless ad- hoc networks. First, sensor nodes are often densely deployed (typically 20 sensor per

  8. Performance of Wireless Sensor Networks Under Random Node Failures

    E-Print Network [OSTI]

    Hagberg, Aric

    Performance of Wireless Sensor Networks Under Random Node Failures Milan Bradonji´c Bell range wireless sensor network applications with sensors distributed in the field using decentralized distribution. RGGs have been a standard tool to model and study wireless ad-hoc and wireless sensor networks [4

  9. 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...

  10. 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...

  11. Oxygen sensor for monitoring gas mixtures containing hydrocarbons

    DOE Patents [OSTI]

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

    1996-03-12T23:59:59.000Z

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

  12. Oxygen sensor for monitoring gas mixtures containing hydrocarbons

    DOE Patents [OSTI]

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

    1996-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Melodia, Tommaso

    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

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

    E-Print Network [OSTI]

    Cauwenberghs, Gert

    transmits EEG/ECG telemetry to a computer for storage and processing. Index Terms--ECG, EEG, Body Sensor indicators that are directly suited for long-term monitoring using body sensor networks. Yet despite compliance. As an alternative, dry electrodes [1] [2] have started becoming much more common-place. However

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

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

  16. Opportunistic Source Coding for Data Gathering in Wireless Sensor Networks

    E-Print Network [OSTI]

    1 Opportunistic Source Coding for Data Gathering in Wireless Sensor Networks Tao Cui, Lijun Chen capacity of multihop wireless networks, an important topic addressed by wireless sensor networks community for correlated data gathering in wireless sensor networks, which ex- ploits the broadcast nature of wireless

  17. Power Optimal Connectivity and Coverage in Wireless Sensor Networks

    E-Print Network [OSTI]

    Bystroff, Chris

    1 Power Optimal Connectivity and Coverage in Wireless Sensor Networks Metin Inanc, Malik Magdon links, there are fundamental differences between a sensor network and other wireless ad-hoc networks programming/Optimization I. INTRODUCTION This work considers a sensor network which is com- prised of a large

  18. Efficient Clustering Algorithms for Self-Organizing Wireless Sensor Networks

    E-Print Network [OSTI]

    Starobinski, David

    Efficient Clustering Algorithms for Self-Organizing Wireless Sensor Networks Rajesh Krishnan BBN@bu.edu Abstract Self-organization of wireless sensor networks, which involves network decomposi- tion-organization in wireless sensor networks. We first present a novel approach for message-efficient clustering, in which

  19. Intelligent Management of Misbehaving Nodes In Wireless Sensor Networks

    E-Print Network [OSTI]

    Gesbert, David

    Intelligent Management of Misbehaving Nodes In Wireless Sensor Networks Using Blackhole@eurecom.fr Abstract--Misbehaving nodes in wireless sensor networks and ad hoc networks often disrupt the operation delivery and erroneous data outputs for wireless sensor networks. Existing literatures have addressed

  20. 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...

  1. Development of a wireless sensor unit for tunnel monitoring

    E-Print Network [OSTI]

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

    2004-01-01T23:59:59.000Z

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

  2. Embedded Sensor Array Development for Composite Structure Integrity Monitoring

    SciTech Connect (OSTI)

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

    2007-06-26T23:59:59.000Z

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

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

    DOE Patents [OSTI]

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

    2007-02-20T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Rhee, Sokwoo

    2000-01-01T23:59:59.000Z

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

  5. A Biologically Inspired Networking Model for Wireless Sensor Networks

    E-Print Network [OSTI]

    Charalambous, Charalambos

    2011-02-22T23:59:59.000Z

    Wireless sensor networks (WSNs) have emerged in strategic applications such as target detection, localization, and tracking in battlefields, where the large-scale na- ture renders centralized control prohibitive. In addition, the finite batteries...

  6. Preserving Area Coverage in Wireless Sensor Networks by using

    E-Print Network [OSTI]

    Boyer, Edmond

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

  7. Distributed Network Monitoring with Bounded Link Utilization in IP Networks

    E-Print Network [OSTI]

    Li, Li Erran

    1 Distributed Network Monitoring with Bounded Link Utilization in IP Networks Li Li Center multiple pollers located at different points in the network. However, using distributed pollers could for Networking Research Lucent Bell Labs erranlli@dnrc.bell-labs.com Marina Thottan Center for Networking

  8. Link Loss Inference in Wireless Sensor Networks with Randomized Network Coding

    E-Print Network [OSTI]

    Wong, Vincent

    Link Loss Inference in Wireless Sensor Networks with Randomized Network Coding Vahid Shah that randomized network coding can improve the reliability of wireless sensor networks with lossy links. With network coding, the loss rate of a chosen path in a wireless sensor network is the maximum link loss rate

  9. Near Optimal Broadcast with Network Coding in Large Homogeneous Wireless Sensor Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Near Optimal Broadcast with Network Coding in Large Homogeneous Wireless Sensor Networks C of wireless "homogeneous" sensor networks contained of the plane: wireless lattice networks, and dense unit of application is wireless sensor net- works, and indeed network coding has been used in wireless networks

  10. Interference-Aware Fair Rate Control in Wireless Sensor Networks

    E-Print Network [OSTI]

    Rangwala, Sumit; Gummadi, Ramakrishna; Govindan, Ramesh; Psounis, Konstantinos

    2006-01-01T23:59:59.000Z

    Architecture for Structural Health Monitoring. In Proc. ofNetwork for Structural Health Monitoring: Performance andnetworks for structural health monitoring [17, 21, 22]. In

  11. An Evaluation of Sensing Platforms Used for Sensor Network Research

    E-Print Network [OSTI]

    Kansas, University of

    An Evaluation of Sensing Platforms Used for Sensor Network Research Daniel T. Fokum, Dr. Victor S to complex sensor nodes; which include fully configured computers. Several of these platforms were evaluated ................................................................................................................. 2 3 Evaluation of Sensor Platforms

  12. 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...

  13. Towards a smart sensor interface for wearable cough monitoring

    E-Print Network [OSTI]

    Odam, Kofi

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

  14. Hazard Avoidance in Wireless Sensor and Actor Networks

    E-Print Network [OSTI]

    Sivakumar, Raghupathy

    Hazard Avoidance in Wireless Sensor and Actor Networks Ramanuja Vedantham Zhenyun Zhuang Prof [Akyildiz'04] Network Low bandwidth (Hazards Hazards undesirable changes in the environment Reason for hazards Different latencies For different sensors and actors

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

    E-Print Network [OSTI]

    Giurgiutiu, Victor

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

  16. Sensor Network Demonstration for In Situ Decommissioning - 13332

    SciTech Connect (OSTI)

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

    2013-07-01T23:59:59.000Z

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

  17. Symmetric Clock Synchronization in Sensor Networks Philipp Sommer

    E-Print Network [OSTI]

    Symmetric Clock Synchronization in Sensor Networks Philipp Sommer Computer Engineering and Networks Laboratory ETH Zurich 8092 Zurich, Switzerland sommer@tik.ee.ethz.ch Roger Wattenhofer Computer Engineering

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

    E-Print Network [OSTI]

    New South Wales, University of

    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

  19. Irrigation Monitoring with Soil Water Sensors 

    E-Print Network [OSTI]

    Enciso, Juan; Porter, Dana; Peries, Xavier

    2007-01-19T23:59:59.000Z

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

  20. Duty-Cycle-Aware Broadcast in Wireless Sensor Networks

    E-Print Network [OSTI]

    Liu, Jiangchuan (JC)

    active and dormant states, so as to conserve energy and extend the network lifetime. Unfortunately fails to capture the uniqueness of energy-constrained wireless sensor networks. The sensor nodesDuty-Cycle-Aware Broadcast in Wireless Sensor Networks Feng Wang Jiangchuan Liu School of Computing

  1. Using efficiently autoregressive estimation in Wireless Sensor Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Using efficiently autoregressive estimation in Wireless Sensor Networks Karen Miranda1 , Víctor M City {Name.Surname}@inria.fr, vicman@xanum.uam.mx Abstract--Wireless sensor networks (WSNs) are widely networks; autoregressive pro- cesses; data aggregation. I. INTRODUCTION Applications for wireless sensor

  2. Robust Target Localization from Binary Decisions in Wireless Sensor Networks

    E-Print Network [OSTI]

    Michailidis, George

    Robust Target Localization from Binary Decisions in Wireless Sensor Networks Natallia Katenka Wireless sensor networks (WSN) are becoming an important tool in a variety of tasks, including mon- itoring targets and localizing multiple targets are also considered. Keywords: wireless sensor network, target

  3. High-resolution speech signal reconstruction in Wireless Sensor Networks

    E-Print Network [OSTI]

    Gutierrez-Osuna, Ricardo

    High-resolution speech signal reconstruction in Wireless Sensor Networks Andria Pazarloglou, Radu With the recent growth of Wireless Sensor Networks (WSNs), many advanced application areas have received sig, rgutier}@cs.tamu.edu Abstract--Data streaming is an emerging class of applica- tions for sensor networks

  4. On Distributed Fault-Tolerant Detection in Wireless Sensor Networks

    E-Print Network [OSTI]

    Huang, Yinlun

    On Distributed Fault-Tolerant Detection in Wireless Sensor Networks Xuanwen Luo, Student Member problems for distributed fault-tolerant detection in wireless sensor networks: 1) how to address both it possible to perform energy- efficient fault-tolerant detection in a wireless sensor network. Index Terms

  5. Model-Driven Dynamic Control of Embedded Wireless Sensor Networks

    E-Print Network [OSTI]

    Agarwal, Pankaj K.

    Model-Driven Dynamic Control of Embedded Wireless Sensor Networks Paul G. Flikkema1 , Pankaj K-generation wireless sensor networks may revolution- ize understanding of environmental change by assimilating heteroge of wireless sensor networks is now becoming a mature research field. As a result, the discipline is undergoing

  6. Data aware, Low cost Error correction for Wireless Sensor Networks

    E-Print Network [OSTI]

    California at San Diego, University of

    Data aware, Low cost Error correction for Wireless Sensor Networks Shoubhik Mukhopadhyay, Debashis challenges in adoption and deployment of wireless networked sensing applications is ensuring reliable sensor of such applications. A wireless sensor network is inherently vulnerable to different sources of unreliability

  7. Energy Analysis of Four Wireless Sensor Network MAC Protocols

    E-Print Network [OSTI]

    Kinicki, Robert E.

    Energy Analysis of Four Wireless Sensor Network MAC Protocols Brian Bates, Andrew Keating, Robert-hop network topology were conducted using three wireless sensor net- work traffic patterns (broadcast which reduce radio energy consumption is important for wireless sensor networks (WSNs). The most

  8. Finding and Mending Barrier Gaps in Wireless Sensor Networks

    E-Print Network [OSTI]

    Liu, Benyuan

    Finding and Mending Barrier Gaps in Wireless Sensor Networks Anwar Saipulla Benyuan Liu Jie Wang--Constructing sensing barriers using wireless sensor networks has important applications in military operations results show that our algorithms can effectively improve the barrier coverage of a wireless sensor network

  9. A Directionality based Location Discovery Scheme for Wireless Sensor Networks

    E-Print Network [OSTI]

    Ha, Dong S.

    A Directionality based Location Discovery Scheme for Wireless Sensor Networks Asis Nasipuri and Kai is a large ad hoc network of densely dis- tributed sensors that are equipped with low power wireless number of such wireless sensors can be networked to coordinate amongst themselves and per- form the much

  10. Exploring In-Situ Sensing Irregularity in Wireless Sensor Networks

    E-Print Network [OSTI]

    Kim, Dae-Shik

    Exploring In-Situ Sensing Irregularity in Wireless Sensor Networks Joengmin Hwang, Tian He Introduction Wireless sensor networks are envisioned to support vari- ety of applications such as military network systems. Compared to the diversified solutions pro- duced for communication among sensor nodes

  11. Exposure In Wireless Sensor Networks: Theory And Practical Solutions

    E-Print Network [OSTI]

    Exposure In Wireless Sensor Networks: Theory And Practical Solutions Seapahn Megerian1 , Farinaz}@cs.ucla.edu, farinaz@eecs.berkeley.edu, gangqu@eng.umd.edu, gforce@ucla.edu Abstract Wireless ad-hoc sensor networks behavior of exposure and the proposed algorithm for its calculation. Keywords: wireless sensor network

  12. Wireless Sensor Networks Routing over Zones Kamal Beydoun, Violeta Felea

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Wireless Sensor Networks Routing over Zones Kamal Beydoun, Violeta Felea Laboratory of Computer univ-fcomte dot fr Abstract--In this paper, we propose a routing protocol for wireless sensor networks to determine a lower bound for the number of zones. Index Terms--wireless sensor networks, hierarchical routing

  13. A New Management Method for Wireless Sensor Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A New Management Method for Wireless Sensor Networks Aur´elien JACQUOT, Jean-Pierre CHANET, Kun.monier@anelis.isima.fr Abstract--The Wireless Sensor Networks (WSN) with their constant evolution, need new management methods, environmental data collection etc. In order to manage a large scale WSN, several Wireless sensor network

  14. ZIGBEE WIRELESS SENSOR NETWORK NODES DEPLOYMENT STRATEGY FOR

    E-Print Network [OSTI]

    ZIGBEE WIRELESS SENSOR NETWORK NODES DEPLOYMENT STRATEGY FOR DIGITAL AGRICULTURAL DATA ACQUISITIONBee-based wireless sensor network for digital agricultural data acquisition is one of the best ways to build the system. In this paper, based on ZigBee wireless sensor network deployment planning principles

  15. A Dynamic Clustering Construction for Wireless Sensor Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 A Dynamic Clustering Construction for Wireless Sensor Networks Eugene Pamba Capo-Chichi , David and reduced costs have encouraged the use of wireless sensor networks in many applications. Advances of a well known clustering algorithm for wireless sensor networks named LEACH and its versions such as LEACH

  16. A realistic testing of a shipboard wireless sensor network

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A realistic testing of a shipboard wireless sensor network H. Kdouh1,* , C. Brousseau2 , G. Zaharia-mail : hussein.kdouh@insa-rennes.fr Abstract--Wireless Sensor Networks (WSN) may be a very useful technology by the topology evolution of the network and the analysis of RSSI levels of links between sensor nodes. Keywords-Wireless

  17. Detecting and Locating Radioactive Signals with Wireless Sensor Networks

    E-Print Network [OSTI]

    Zhang, Tonglin

    Detecting and Locating Radioactive Signals with Wireless Sensor Networks Tonglin Zhang Department-765-4940558 AbstractMethods of detecting and locating nuclear radioac- tive targets via wireless sensor networks (WSN model, radia- tion and radioactive isotopes, wireless sensor network. I. INTRODUCTION Currently, using

  18. Channel Bonding in Cognitive Radio Wireless Sensor Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Channel Bonding in Cognitive Radio Wireless Sensor Networks Mubashir Husain Rehmani, St-mail: rehmani@univ-mlv.fr, lohier@univ-mlv.fr, rachedi@univ-mlv.fr Abstract--Recently, wireless sensor networks, Wireless Multimedia Sensor Networks (WMSNs) have lot of new potential applications in different domains

  19. Energy-Efficient Routing Schemes for Wireless Sensor Networks

    E-Print Network [OSTI]

    Khan, Maleq

    1 Energy-Efficient Routing Schemes for Wireless Sensor Networks Maleq Khan Gopal Pandurangan Bharat be manually placed in specific positions. The sensor network is typically ad hoc, formed by local self-configuration. Data-centric routing is a new use- ful paradigm for energy-constrained sensor networks. The data coming

  20. Cross-layered Synchronization Protocol for Wireless Sensor Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Cross-layered Synchronization Protocol for Wireless Sensor Networks Thomas Beluch, Daniela. Advances in wireless sensor network performances and improvement of attainable bit rates allow research on such measurement systems using Wireless Sensor Networks (WSNs). However, current WSN synchronization protocols do

  1. Managing Wireless Sensor Networks with Supply Chain Strategy

    E-Print Network [OSTI]

    Latchman, Haniph A.

    Managing Wireless Sensor Networks with Supply Chain Strategy Wei Liu , Yanchao Zhang, Wenjing Lou Email: {liuw@,yczhang@,fang@ece.}ufl.edu Email: wjlou@ece.wpi.edu Abstract-- Wireless sensor networks wireless sensor networks (WSNs) be identified as one of the most important technologies that will change

  2. The Coverage Problem in Three-Dimensional Wireless Sensor Networks

    E-Print Network [OSTI]

    Tseng, Yu-Chee

    The Coverage Problem in Three-Dimensional Wireless Sensor Networks Chi-Fu Huang, Yu-Chee Tseng- bedded micro-sensing MEMS technologies has made wireless sensor networks possible. Such environments may protocols [7], [8], [9]. Localization and positioning applications of wireless sensor networks are discussed

  3. Effective Scheduling for Coded Distributed Storage in Wireless Sensor Networks

    E-Print Network [OSTI]

    Boucherie, Richard J.

    Effective Scheduling for Coded Distributed Storage in Wireless Sensor Networks Jan-Willem van Bloem in a decentralized fashion for any rate below this maximum. 1 Introduction In wireless sensor networks, reliable data storage is essential for coping with fail- ures. Wireless sensor networks consist of cooperating devices

  4. Aggregate Node Placements in Sensor Networks Weifa Liang

    E-Print Network [OSTI]

    Liang, Weifa

    help prolong the lifetime of a sensor network substantially. Therefore, energy efficient data gatherAggregate Node Placements in Sensor Networks Weifa Liang DCS ANU Canberra, Australia Guanjun Ma DCS into a region of interest to form a sensor network and building a routing tree for data gathering at the same

  5. Low Computation and Low Latency Algorithms for Distributed Sensor Network

    E-Print Network [OSTI]

    Cevher, Volkan

    Low Computation and Low Latency Algorithms for Distributed Sensor Network Initialization M. Borkar distribution can be determined in a distributed heterogeneous sensor network with reduced subspace distribution for networks with a variety of sensor types as long as the collective set of measurements from all

  6. Distributed Wavelet De-Noising for Sensor Networks Raymond Wagner

    E-Print Network [OSTI]

    Distributed Wavelet De-Noising for Sensor Networks Raymond Wagner Dept. of Electrical and Computer-- Wireless sensor networks provide a natural appli- cation area for distributed data processing algorithms briefly review the details of a distributed wavelet processing protocol for sensor networks based

  7. Distributed Wavelet DeNoising for Sensor Networks Raymond Wagner

    E-Print Network [OSTI]

    Distributed Wavelet De­Noising for Sensor Networks Raymond Wagner Dept. of Electrical and Computer Abstract--- Wireless sensor networks provide a natural appli­ cation area for distributed data processing, we briefly review the details of a distributed wavelet processing protocol for sensor networks based

  8. Energy Efficiency of Encryption Schemes Applied to Wireless Sensor Networks

    E-Print Network [OSTI]

    Heys, Howard

    University. 2. Based on "An Analysis of Link Layer Encryption Schemes in Wireless Sensor Networks" by X In this paper, we focus on the energy efficiency of secure communication in wireless sensor networks (WSNs). Our - wireless sensor networks; security; encryption; cryptographic algorithm; stream cipher; block cipher 1

  9. Securely Computing an Approximate Median in Wireless Sensor Networks

    E-Print Network [OSTI]

    Setia, Sanjeev

    Securely Computing an Approximate Median in Wireless Sensor Networks Sankardas Roy 1 sroy1@gmu and the unattended nature of sensor nodes, sensor network protocols need to be designed with security in mind and efficient. Categories and Subject Descriptors C.2.0 [Computer-Communication Networks]: General- Security

  10. Mesh-based Sensor Relocation for Coverage Maintenance in Mobile Sensor Networks

    E-Print Network [OSTI]

    Santoro, Nicola

    sophisticated protocols, mobile sensor networks are more flexible and adaptive to unknown or hazardous of reasons. All of them rely on global/cross-network message transmissions for discovering nearby replacementMesh-based Sensor Relocation for Coverage Maintenance in Mobile Sensor Networks Xu Li SCS, Carleton

  11. Consensus Filters for Sensor Networks and Distributed Sensor Fusion Reza Olfati-Saber and Jeff S. Shamma

    E-Print Network [OSTI]

    Shamma, Jeff S.

    Consensus Filters for Sensor Networks and Distributed Sensor Fusion Reza Olfati-Saber and Jeff S for sensor fusion in sensor networks. This paper introduces a distributed filter that allows the nodes of a sensor network to track the average of n sensor measurements using an average consensus based distributed

  12. air monitoring network: Topics by E-print Network

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

    Websites Summary: Monitor Network Pulse Oximeter: Measures blood oxygen levels and pulse Accelerometer: Measures motion measures cardiac activity (ECG), oxygen saturation,...

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

    E-Print Network [OSTI]

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

    2010-01-01T23:59:59.000Z

    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...

  14. Mobile Multimedia Sensor Networks: Architecture and Routing

    E-Print Network [OSTI]

    Chen, Min

    Mobile Multimedia Sensor Networks: Architecture and Routing 1Min Chen, 2 Mohsen Guizani, 3 Minho Jo technology and multimedia systems have exhibited a strong potential and tendency on improving human life by enabling smart services in ubiquitous computing environments. This paper investigates a mobile multimedia

  15. Energy Balanced Chain in Distributed Sensor Networks

    E-Print Network [OSTI]

    Howitt, Ivan

    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

  16. Ferry-Based Linear Wireless Sensor Networks

    E-Print Network [OSTI]

    Wu, Jie

    of oil, gas, and water pipeline infrastructure using wireless sensor networks. #12;IEEE Globecom 2013 UAE (2006): 2,580 Km of gas pipelines 2,950 Km of oil pipelines 156 Km of refined products pipelines. Desalinated water. Saudi Arabia: 3,800 Km. Oil, Gas, and Water Pipeline UseOil, Gas, and Water

  17. Power-Efficient Adaptable Wireless Sensor Networks , David Evans2

    E-Print Network [OSTI]

    Evans, David

    with the unpredictable network topologies that result from sensor node scatters and to manage resources (energy the flexibility necessary for the adaptations required of wireless sensor networks without the penalties network operation. · Nodes often fail during network operation, due to depleted energy, destruction

  18. Irrigation Monitoring with Soil Water Sensors (Spanish) 

    E-Print Network [OSTI]

    Enciso, Juan; Porter, Dana; Peries, Xavier

    2007-07-25T23:59:59.000Z

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

  19. Irrigation Monitoring with Soil Water Sensors (Spanish)

    E-Print Network [OSTI]

    Enciso, Juan; Porter, Dana; Peries, Xavier

    2007-07-25T23:59:59.000Z

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

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

    DOE Patents [OSTI]

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

    1993-01-01T23:59:59.000Z

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

  1. Techniques for mitigating congestion in wireless sensor networks

    E-Print Network [OSTI]

    Hull, Bret Warren, 1980-

    2005-01-01T23:59:59.000Z

    Network congestion occurs when offered traffic load exceeds available capacity at any point in a network. In wireless sensor networks, congestion causes overall channel quality to degrade and loss rates to rise, leads to ...

  2. Underwater Sensor Networking: Research Challenges and Potential Applications

    E-Print Network [OSTI]

    Heidemann, John

    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

  3. Secure Integrated Routing and Localization in Wireless Optical Sensor Networks

    E-Print Network [OSTI]

    Okorafor, Unoma Ndili

    2009-05-15T23:59:59.000Z

    Wireless ad hoc and sensor networks are envisioned to be self-organizing and autonomous networks, that may be randomly deployed where no fixed infrastructure is either feasible or cost-effective. The successful commercialization of such networks...

  4. Distributed Detection in Sensor Networks: Connectivity Graph and Small World Networks

    E-Print Network [OSTI]

    Moura, José

    Distributed Detection in Sensor Networks: Connectivity Graph and Small World Networks Saeed A study distributed detection in a sensor network where the sensors cooperate by exchanging information distributed decision making algorithms in the network. This is a difficult problem since it corresponds

  5. DOI 10.1007/s11276-006-0724-8 Relay sensor placement in wireless sensor networks

    E-Print Network [OSTI]

    Wang, Lusheng

    DOI 10.1007/s11276-006-0724-8 Relay sensor placement in wireless sensor networks Xiuzhen Cheng Sensor Networks (WSNs) are ad hoc multihop sys- tems containing sensors connected by wireless links sensor net- works. In our study, this problem is modelled by a NP-hard network optimization problem named

  6. Blind Calibration of Networks of Sensors: Theory and Algorithms

    E-Print Network [OSTI]

    Nowak, Robert

    Blind Calibration of Networks of Sensors: Theory and Algorithms Laura Balzano University@ece.wisc.edu May 2007 Abstract This chapter considers the problem of blindly calibrating sensor response using, calibration errors are one of the major obstacles to the practical use of sensor networks [3], because

  7. ESC: Energy Synchronized Communication in Sustainable Sensor Networks

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    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

  8. Hybrid Sensor Networks: A Small World Gaurav Sharma

    E-Print Network [OSTI]

    Mazumdar, Ravi R.

    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

  9. Routing protocol for anycast communications in a wireless sensor network

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Routing protocol for anycast communications in a wireless sensor network Nancy El Rachkidy. 1 Introduction In the past few years, wireless sensor networks have been used in several moni University Complexe scientifique des C´ezeaux, 63177 Aubi`ere cedex, France Abstract. In wireless sensor

  10. Data Collection and Management Solution for Wireless Sensor Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Data Collection and Management Solution for Wireless Sensor Networks G. De Sousa1 , J.-P. Chanet1 Aubière cedex, France Correspondent author: gil.de-sousa@cemagref.fr Abstract Wireless sensors networks on wireless sensors, implementing a hardware component-based concept, that allow them to be combined to form

  11. Evaluating complex MAC protocols for sensor networks with APMC

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    AVoCS 2006 Evaluating complex MAC protocols for sensor networks with APMC Micha¨el Cadilhac1 Thomas present an analysis of a MAC (Medium Access Control) protocol for wireless sensor net- works. The purpose insights about it performance. Keywords: Wireless sensor networks, approximate verification 1 Introduction

  12. Probabilistic Detection of Mobile Targets in Heterogeneous Sensor Networks

    E-Print Network [OSTI]

    Poovendran, Radha

    , a surveillance system can be realized via fusion of data aggregated from various sensor modalities: infrared, CCD of detection can be quantified by evaluating the probability of detection by at least k sensors, where kProbabilistic Detection of Mobile Targets in Heterogeneous Sensor Networks Loukas Lazos Network

  13. Power Management for Wireless Sensor Networks Based on Energy Budgets

    E-Print Network [OSTI]

    Turau, Volker

    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

  14. Autonomous Data Collection from Underwater Sensor Networks using Acoustic Communication

    E-Print Network [OSTI]

    Sukhatme, Gaurav S.

    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

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

    E-Print Network [OSTI]

    Frechette, Luc G.

    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

  16. On Perimeter Coverage in Wireless Sensor Networks with Minimum Cost

    E-Print Network [OSTI]

    Tam, Vincent W. L.

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

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

    SciTech Connect (OSTI)

    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

    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.

  18. Security Schemes for Wireless Sensor Networks with Mobile Sink 

    E-Print Network [OSTI]

    Rasheed, Amar Adnan

    2011-08-08T23:59:59.000Z

    components for the secure operation of such networks. Due to the sensors, limited resources designing efficient security schemes with low communication overhead to secure communication links between sensors and MS (Mobile Sink) is not a trivial task...

  19. A congestion control scheme for wireless sensor networks

    E-Print Network [OSTI]

    Xiong, Yunli

    2005-08-29T23:59:59.000Z

    In wireless sensor networks (WSN), nodes have very limited power due to hardware constraints. Packet losses and retransmissions resulting from congestion cost precious energy and shorten the lifetime of sensor nodes. This problem motivates the need...

  20. Topology management protocols in ad hoc wireless sensor networks

    E-Print Network [OSTI]

    Kim, Hogil

    2009-05-15T23:59:59.000Z

    A wireless sensor network (WSN) is comprised of a few hundred or thousand au-tonomous sensor nodes spatially distributed over a particular region. Each sensornode is equipped with a wireless communication device, a small microprocessor, anda battery...

  1. Defending against Search-based Physical Attacks in Sensor Networks

    E-Print Network [OSTI]

    Xuan, Dong

    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

  2. An Energy-efficient Wireless Sensor Network for Precision Agriculture

    E-Print Network [OSTI]

    Kumar, Ratnesh

    An Energy-efficient Wireless Sensor Network for Precision Agriculture Herman Sahota Ratnesh Kumar and control technologies in application areas such as precision agriculture. We design MAC and Network layers for a wireless sensor network deployed for a precision agriculture application which requires periodic collection

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

    E-Print Network [OSTI]

    Anlage, Steven

    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

  4. Wireless Sensor Networks: The Protocol Stack Iowa State University

    E-Print Network [OSTI]

    McCalley, James D.

    Wireless Sensor Networks: The Protocol Stack Mat Wymore Iowa State University Wind Energy Science Protocol Stack March 26, 2014 1 / 15 #12;One-Slide Refresher Wireless Sensor Networks (WSNs) Could be used;Wireless access point network Layers Application Google Chrome Transport Transmission Control Protocol (TCP

  5. An Energy Efficient Hierarchical Clustering Algorithm for Wireless Sensor Networks

    E-Print Network [OSTI]

    Chen, Ing-Ray

    An Energy Efficient Hierarchical Clustering Algorithm for Wireless Sensor Networks Seema (approximately 1 cubic millimeter) sensors. An ad-hoc wireless network of large numbers of such inexpensive, IN, USA {seema, coyle}@ecn.purdue.edu Abstract-- A wireless network consisting of a large number

  6. Distributed Average Consensus in Sensor Networks with Random Link Failures

    E-Print Network [OSTI]

    Moura, José

    Distributed Average Consensus in Sensor Networks with Random Link Failures Soummya Kar Department: soummyakgandrew.cmu.edu Abstract We study the impact of the topology of a sensor network on distributed average in terms of a moment of the distribution of the norm of a function of the network graph Laplacian matrix L

  7. Energy-Efficient Aggregate Query Evaluation in Sensor Networks

    E-Print Network [OSTI]

    Liang, Weifa

    Energy-Efficient Aggregate Query Evaluation in Sensor Networks Zhuoyuan Tu and Weifa Liang efficiently. This paper considers the aggregate query evaluation in a sensor network database to the base station, which is called in-network aggregation. In other words, a tree rooted at the base station

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

    E-Print Network [OSTI]

    Haddadi, Hamed

    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

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

    E-Print Network [OSTI]

    Goldberg, Ken

    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

  10. SENSE: A WIRELESS SENSOR NETWORK Gilbert Chen, Joel Branch, Michael J. Pflug, Lijuan Zhu, and Boleslaw

    E-Print Network [OSTI]

    Varela, Carlos

    Chapter 1 SENSE: A WIRELESS SENSOR NETWORK SIMULATOR Gilbert Chen, Joel Branch, Michael J. Pflug Abstract A new network simulator, called SENSE, has been developed for simulating wireless sensor networks for sensor network research. Keywords: Wireless Sensor Networks, Network Simulation, Component-Based Sim

  11. Enabling Long-Lived Sensor Networks Through Solar Energy Harvesting

    E-Print Network [OSTI]

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

    2005-01-01T23:59:59.000Z

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

  12. Theory of Semidefinite Programming for Sensor Network Localization

    E-Print Network [OSTI]

    Anthony So

    2006-07-28T23:59:59.000Z

    Jul 28, 2006 ... Theory of Semidefinite Programming for Sensor Network Localization. Anthony So (manchoso ***at*** cs.stanford.edu) Yinyu Ye (yinyu-ye ...

  13. Characterization, monitoring, and sensor technology catalogue

    SciTech Connect (OSTI)

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

    1995-12-01T23:59:59.000Z

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

  14. Peer-to-Peer Spatial Queries in Sensor Networks Murat Demirbas Hakan Ferhatosmanoglu

    E-Print Network [OSTI]

    Demirbas, Murat

    .ohio-state.edu Abstract Sensor networks, that consist of potentially several thou- sands of nodes each with sensing (heat for monitoring spatial information about a region of interest. Although spatial query execution has been studied. For achieving minimal energy consumption and minimal response time, our query processing model en- sures

  15. PeertoPeer Spatial Queries in Sensor Networks Murat Demirbas Hakan Ferhatosmanoglu

    E-Print Network [OSTI]

    Demirbas, Murat

    ,hakang@cis.ohio­state.edu Abstract Sensor networks, that consist of potentially several thou­ sands of nodes each with sensing (heat for monitoring spatial information about a region of interest. Although spatial query execution has been studied. For achieving minimal energy consumption and minimal response time, our query processing model en­ sures

  16. Designing Wireless Sensor Networks as a Shared Resource for Sustainable Development

    E-Print Network [OSTI]

    2006-01-01T23:59:59.000Z

    J. Kaiser. High wireless sensor network for long-term, in-Designing Wireless Sensor Networks as a Shared Resource forAbstract Introduction Wireless sensor networks (WSNs) are a

  17. Efficient multi-resolution data dissemination in wireless sensor networks

    E-Print Network [OSTI]

    Chen, Jian

    2005-11-01T23:59:59.000Z

    A large-scale distributed wireless sensor network is composed of a large collection of small low-power, unattended sensing devices equipped with limited memory, processors, and short-range wireless communication. The network is capable...

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

    SciTech Connect (OSTI)

    NONE

    1995-06-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Giurgiutiu, Victor

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

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

    E-Print Network [OSTI]

    Giurgiutiu, Victor

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

  1. Fault-tolerant Sensor Network based on Fault Evaluation Matrix and Compensation for Intermittent Observation

    E-Print Network [OSTI]

    Fault-tolerant Sensor Network based on Fault Evaluation Matrix and Compensation for Intermittent-tolerant sensor network configuration problem for a target navigation. A sensor network system consists of many sensor nodes and its network connections. Each sensor node can exchange information by wireless

  2. SEI 2: Embedded Wired and Wireless Seismic Networks for Structural Health Monitoring

    E-Print Network [OSTI]

    2006-01-01T23:59:59.000Z

    Networks for Structural Health Monitoring Monica Kohler,network for structural health monitoring. state - of - the -network for structural health monitoring. Changes in the

  3. Exploiting Social Networks for Sensor Data Sharing with SenseShare

    E-Print Network [OSTI]

    Schmid, Thomas; Srivastava, Mani B

    2007-01-01T23:59:59.000Z

    Sensing Exploiting Social Networks for Sensor Data Sharinghttp://nesl.ee.ucla.edu Introduction: Social Networks andData Sharing Social Networks Social networks create groups

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

    E-Print Network [OSTI]

    Ning, Peng

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

  5. Development of a Portable Wireless Sensor Network to Enhance Post-Occupancy Commissioning 

    E-Print Network [OSTI]

    Noye,S.; North,R.; Fisk, D.

    2014-01-01T23:59:59.000Z

    -cost data for pop-up monitoring™ • Initial characterisation test on low power sensors show suitable accuracy and the ability to detect relevant building properties for commissioning • Deployment on major project this autumn Thank you for your attention... on the availability of a low-cost set of appropriate data. This paper presents the initial development phase of a pop-up monitoringTM toolkit using a wireless sensor network system to perform commissioning during the initial year of occupation of a building...

  6. The Community Environmental Monitoring Program in the 21st Century: The Evolution of a Monitoring Network

    SciTech Connect (OSTI)

    Hartwell, W.T.; Tappen, J.; Karr, L.

    2007-01-19T23:59:59.000Z

    This paper focuses on the evolution of the various operational aspects of the Community Environmental Monitoring Program (CEMP) network following the transfer of program administration from the U.S. Environmental Protection Agency (EPA) to the Desert Research Institute (DRI) of the Nevada System of Higher Education in 1999-2000. The CEMP consists of a network of 29 fixed radiation and weather monitoring stations located in Nevada, Utah, and California. Its mission is to involve stakeholders directly in monitoring for airborne radiological releases to the off site environment as a result of past or ongoing activities on the Nevada Test Site (NTS) and to make data as transparent and accessible to the general public as feasible. At its inception in 1981, the CEMP was a cooperative project of the U.S. Department of Energy (DOE), DRI, and EPA. In 1999-2000, technical administration of the CEMP transitioned from EPA to DRI. Concurrent with and subsequent to this transition, station and program operations underwent significant enhancements that furthered the mission of the program. These enhancements included the addition of a full suite of meteorological instrumentation, state-of-the-art electronic data collectors, on-site displays, and communications hardware. A public website was developed. Finally, the DRI developed a mobile monitoring station that can be operated entirely on solar power in conjunction with a deep-cell battery, and includes all meteorological sensors and a pressurized ion chamber for detecting background gamma radiation. Final station configurations have resulted in the creation of a platform that is well suited for use as an in-field multi-environment test-bed for prototype environmental sensors and in interfacing with other scientific and educational programs. Recent and near-future collaborators have included federal, state, and local agencies in both the government and private sectors. The CEMP also serves as a model for other programs wishing to involve stakeholders with a meaningful role in the process of monitoring and data collection.

  7. 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

  8. Deployment and coverage maintenance in mobile sensor networks 

    E-Print Network [OSTI]

    Lee, Jaeyong

    2009-05-15T23:59:59.000Z

    Deployment of mobile nodes in a region of interest is a critical issue in building a mobile sensor network because it affects cost and detection capabilities of the system. The deployment of mobile sensors in essence is the movement of sensors from...

  9. ENERGY EFFICIENT ROUTING IN WIRELESS SENSOR NETWORKS Curt Schurgers

    E-Print Network [OSTI]

    Shihada, Basem

    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

  10. Design under Constraints of Availability and Energy for Sensor Node in Wireless Sensor Network

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Design under Constraints of Availability and Energy for Sensor Node in Wireless Sensor Network Van by designers are availability and power/energy management for WSN. This paper presents a design for a wireless sensor node, which provides automated reconfiguration for both availability and energy-efficient use

  11. Design and Implementation of a Wireless Sensor Network for Smart Homes

    E-Print Network [OSTI]

    Xu, Ming; Xia, Feng; Yuan, Tengkai; Qian, Jixin; Shao, Meng

    2010-01-01T23:59:59.000Z

    Wireless sensor networks (WSNs) have become indispensable to the realization of smart homes. The objective of this paper is to develop such a WSN that can be used to construct smart home systems. The focus is on the design and implementation of the wireless sensor node and the coordinator based on ZigBee technology. A monitoring system is built by taking advantage of the GPRS network. To support multi-hop communications, an improved routing algorithm based on the Dijkstra algorithm is presented. Preliminary simulations have been conducted to evaluate the performance of the algorithm.

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

    DOE Patents [OSTI]

    Kinzel, Robert L.; Sheets, Larry R.

    2003-09-23T23:59:59.000Z

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

  13. Balancing Image Quality and Energy Consumption in Visual Sensor Networks

    E-Print Network [OSTI]

    Tam, Vincent W. L.

    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

  14. Energy Optimal Transmission Scheduling in Wireless Sensor Networks

    E-Print Network [OSTI]

    Koksal, Can Emre

    1 Energy Optimal Transmission Scheduling in Wireless Sensor Networks Rahul Srivastava, Student networks is energy efficient communication of time-critical data. Energy wastage can be caused by failed. INTRODUCTION Energy efficient communication is one of the key concerns in the design of wireless sensor

  15. Attack-Resilient Time Synchronization for Wireless Sensor Networks

    E-Print Network [OSTI]

    Yener, Aylin

    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

  16. APAWSAN: Actor Positioning for Aerial Wireless Sensor and Actor Networks

    E-Print Network [OSTI]

    Turgut, Damla

    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

  17. Lexicographic Maxmin Fairness for Data Collection in Wireless Sensor Networks

    E-Print Network [OSTI]

    Latchman, Haniph A.

    possible forwarding paths are considered. We provide an iterative linear programming solution, which finds--Multipath maxmin fairness, wireless sensor networks, data collection applications, iterative linear programming. Ç among the peers? We define the maxmin optimal rate assignment problem in a sensor network, where all

  18. Routing Correlated Data with Fusion Cost in Wireless Sensor Networks

    E-Print Network [OSTI]

    Liu, Yonghe

    1 Routing Correlated Data with Fusion Cost in Wireless Sensor Networks Hong Luo, Jun Luo, Yonghe. Different from existing schemes, MFST not only optimizes over the data transmission cost, but also incorporates the cost for data fusion which can be significant for emerging sensor networks with vectorial data

  19. Lightweight Security Principles for Distributed Multimedia Based Sensor Networks

    E-Print Network [OSTI]

    Kundur, Deepa

    the application of multime- dia security principles for the protection of emerging distributed sensor networks and apply to DSN cybersecurity? To address this issue, we present the following contributions: 1 applications leading to a discussion of its potential role in emerging sensor network applications. 2

  20. An Information-sharing Architecture for Wireless Sensor Networks

    E-Print Network [OSTI]

    Heinzelman, Wendi

    1 An Information-sharing Architecture for Wireless Sensor Networks Christophe J. Merlin and Wendi B. Heinzelman Department of Electrical and Computer Engineering, University of Rochester, Rochester NY {merlin for a unifying wireless sensor networks archi- tecture that provides more integration than the standard layered

  1. MEDIUM ACCESS CONTROL LAYER FOR UNDERWATER SENSOR NETWORKS*

    E-Print Network [OSTI]

    Chen, Min

    sensor networks, energy-efficient reliable MAC protocol, and slotted FAMA MAC protocol and low1 CHAPTER 1 MEDIUM ACCESS CONTROL LAYER FOR UNDERWATER SENSOR NETWORKS* Yanping Zhang* , Yang Xiao of Alabama Tuscaloosa, AL 35487-0290 USA E-mail: yangxiao@ieee.org + Dept. of Electrical and Computer

  2. DAG-based Multipath Routing for Mobile Sensor Networks

    E-Print Network [OSTI]

    Choi, Lynn

    DAG-based Multipath Routing for Mobile Sensor Networks Ki-Sup Hong and Lynn Choi School of Electrical Engineering Korea University Seoul, Korea {mastaks, lchoi@korea.ac.kr} Abstract--We propose a new multipath routing protocol called DMR for mobile sensor networks, where any node can move anytime. DMR

  3. Sequence-Based Localization in Wireless Sensor Networks

    E-Print Network [OSTI]

    Krishnamachari, Bhaskar

    Sequence-Based Localization in Wireless Sensor Networks Kiran Yedavalli and Bhaskar Krishnamachari Abstract--We introduce a novel sequence-based localization technique for wireless sensor networks. We show that the localization space can be divided into distinct regions that can each be uniquely identified by sequences

  4. Hindawi Publishing Corporation International Journal of Distributed Sensor Networks

    E-Print Network [OSTI]

    Lim, Sunho

    of dependability and security issues for Wireless Sensor Net- works (WSNs), Mobile Ad hoc Networks (MANETs "anonymous cluster-based MANETs with threshold signature" proposes a secure security system with anonymity robust secure localization algorithm for wireless sensor networks" proposes a localization algorithm

  5. Dynamic Key Ring Update Mechanism for Mobile Wireless Sensor Networks

    E-Print Network [OSTI]

    Yanikoglu, Berrin

    @sabanciuniv.edu Abstract--Key distribution is an important issue to provide security in Wireless Sensor Networks (WSNs. For the performance evaluation basis, we used our mechanism together with a location based key pre-distribution scheme Terms--mobile wireless sensor networks, key ring update, security, resiliency, connectivity I

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

    SciTech Connect (OSTI)

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

    2004-12-26T23:59:59.000Z

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

  7. With the development of the MEMS technology and of wireless networking, the sensor network area has been an active field of research in the last five years. Sensor network

    E-Print Network [OSTI]

    Management . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3 The SoC/NoC Model. 16 3.1 System to monitoring applications and provide high resolution obser- vations of the environment. The main constraint of the sensor networks is energy as the nodes are powered with non renewable batteries, and numerous techniques

  8. Assessment of the detection abilities of monitoring networks for passive tracers at local and regional scales

    E-Print Network [OSTI]

    Mallet, Vivien

    -field studies involve measurement sensors placed within 30 km of nuclear power plants, whether at fixed to power plant locations. They have been carried out at several spatial scales, from local to global: nearAssessment of the detection abilities of monitoring networks for passive tracers at local

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

    E-Print Network [OSTI]

    Koutsoukos, Xenofon D.

    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

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

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

  11. Gavin A. Campbell and Kenneth J. Turner. Goals and Policies for Sensor Network Management. In M. Benveniste, B. Braem, C. Dini, G. Fortino, R. Karnapke, J. L. Mauri and M. S. H. Monsi, editors,

    E-Print Network [OSTI]

    Turner, Ken

    to proactive condition-monitoring of sensor networks, in the domain of wind farm operation. The work forms part Within a wind farm environment, turbines are prone to mechanical failures and degradation caused of the PROSEN project (Proactive Condition Monitoring of Sensor Networks, http://www.prosen.org.uk). The use

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

    E-Print Network [OSTI]

    Zsiga, Luke Mathieson

    2013-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Giurgiutiu, Victor

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

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

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

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

    E-Print Network [OSTI]

    Wang, Dan

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

  16. On Perimeter Coverage Scheduling in Wireless Sensor Networks

    E-Print Network [OSTI]

    Tam, Vincent W. L.

    is to monitor the whole target object as long as possible. In this paper, we first discuss the sufficient monitoring, target tracking, disaster management [1]. Traditionally, coverage problems concern whether- based schedule, we need to identify a set of sensors to monitor the target perimeter in ea

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

    E-Print Network [OSTI]

    Clifford, Zachary

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

  18. Declarative Network Monitoring with an Underprovisioned Query Processor Frederick Reiss

    E-Print Network [OSTI]

    California at Irvine, University of

    interest in bringing the power of declarative queries to passive network monitors [8, 15]. Declar- ative network monitoring setup. real-time data on the status of their networks, network moni- tors need, or parallel hardware [29]. Other systems construct queries by connecting blocks of highly-optimized special

  19. Joint Source Coding, Routing and Resource Allocation for Wireless Sensor Networks

    E-Print Network [OSTI]

    Yu, Wei

    Joint Source Coding, Routing and Resource Allocation for Wireless Sensor Networks Wei Yu and Jun}@comm.utoronto.ca Abstract-- This paper presents an optimization framework for a wireless sensor network in which each sensor regarded as a promising emerging application for future wireless networks. Wireless sensor networks

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

    E-Print Network [OSTI]

    Rubinstein, Benjamin

    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

  1. Demo Abstract: A Unified Architecture for Flexible Radio Power Management in Wireless Sensor Networks

    E-Print Network [OSTI]

    Lu, Chenyang

    Demo Abstract: A Unified Architecture for Flexible Radio Power Management in Wireless Sensor Terms Experimentation, Design Keywords Wireless Sensor Networks, Radio Power Management, Architecture, Framework 1 Overview Radio power management is of paramount concern in wireless sensor networks. While

  2. QoS-oriented Integrated Network Planning for Industrial Wireless Sensor Networks

    E-Print Network [OSTI]

    Breu, Ruth

    , Industry Automation Division, Germany {feng.chen,german,dressler}@informatik.uni-erlangen.de Abstract including industrial automation. This also includes Wireless Sensor Network (WSN) technology [1] basedQoS-oriented Integrated Network Planning for Industrial Wireless Sensor Networks Feng Chen

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

    SciTech Connect (OSTI)

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

    2005-12-26T23:59:59.000Z

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

  4. Energy Efficient Signal Acquisition in Wireless Sensor Networks : A Compressive

    E-Print Network [OSTI]

    Cambridge, University of

    and transmission. To save the energy in WSNs and thus prolong the network lifetime, we present a novel approach1 Energy Efficient Signal Acquisition in Wireless Sensor Networks : A Compressive Sensing Framework networks (WSNs) determines the rate of its energy consumption since most of the energy is used in sampling

  5. Maintaining Trajectory Privacy in Mobile Wireless Sensor Networks

    E-Print Network [OSTI]

    Yanikoglu, Berrin

    based and analytical performance evaluations for the proposed scheme. The results show that a network, the location privacy of the collectors of mobile companies is a security concern. Drastically, the networkMaintaining Trajectory Privacy in Mobile Wireless Sensor Networks Osman Kiraz Sabanci University

  6. Sensor network and soft sensor design for stable nonlinear dynamic systems 

    E-Print Network [OSTI]

    Singh, Abhay Kumar

    2006-10-30T23:59:59.000Z

    In chemical processes, online measurements of all the process variables and parameters required for process control, monitoring and optimization are seldom available. The use of soft sensors or observers is, therefore, highly significant as they can...

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

    E-Print Network [OSTI]

    Juarez, Juan Carlos

    2002-01-01T23:59:59.000Z

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

  8. Sensor Networks Challenges for Intelligent Buildings Alberto Eduardo Cerpa

    E-Print Network [OSTI]

    Cerpa, Alberto E.

    , in particular in clutter environments common inside buildings, with many interfering electromagnetic fields security, it is clear that having a large number of sensors in the building that can monitor human movement greater capability, as is leveraged commonly by sensor arrays such as in radar systems or binocular vision

  9. Distributed-in/ distributed-out sensor networks : a new framework to analyze distributed phenomena

    E-Print Network [OSTI]

    Christakos, Constantine Kleomenis, 1974-

    2006-01-01T23:59:59.000Z

    With a new way of thinking about organizing sensor networks, we demonstrate that we can more easily deploy and program these networks to solve a variety of different problems. We describe sensor networks that can analyze ...

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

    SciTech Connect (OSTI)

    A.B. Thien

    2006-03-01T23:59:59.000Z

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

  11. adaptive sensor fusion: 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 Adaptive Data Fusion for Energy Efficient Routing in Wireless Sensor Networks Computer Technologies and Information...

  12. Inference in sensor networks : graphical models and particle methods

    E-Print Network [OSTI]

    Ihler, Alexander T. (Alexander Thomas), 1976-

    2005-01-01T23:59:59.000Z

    Sensor networks have quickly risen in importance over the last several years to become an active field of research, full of difficult problems and applications. At the same time, graphical models have shown themselves to ...

  13. Localized Pipeline Encroachment Detector System Using Sensor Network

    E-Print Network [OSTI]

    Ou, Xiaoxi 1986-

    2011-08-08T23:59:59.000Z

    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...

  14. Stealthy attacks and defense strategies in competing sensor networks 

    E-Print Network [OSTI]

    Czarlinska, Aleksandra

    2009-05-15T23:59:59.000Z

    The fundamental objective of sensor networks underpinning a variety of applications is the collection of reliable information from the surrounding environment. The correctness of the collected data is especially important in applications involving...

  15. Adaptive sampling and forecasting with mobile sensor networks

    E-Print Network [OSTI]

    Choi, Han-Lim

    2009-01-01T23:59:59.000Z

    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 ...

  16. Adaptive Distributed Resource Allocation in Wireless Sensor Networks

    E-Print Network [OSTI]

    Lim, Hock Beng

    Wireless sensor networks have emerged as a promising technology for a wide range of important applications. A major research challenge in this field is the distributed resource allocation problem, which concerns how the ...

  17. Workplace Applications of Sensor Networks* W. Steven Conner1

    E-Print Network [OSTI]

    Heidemann, John

    ]. 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

  18. Information-Theoretic Motion Planning for Constrained Sensor Networks

    E-Print Network [OSTI]

    Levine, Daniel

    2012-07-20T23:59:59.000Z

    This paper considers the problem of online informative motion planning for a network of heterogeneous sensing agents, each subject to dynamic constraints, environmental constraints, and sensor limitations. Prior work has ...

  19. Stealthy attacks and defense strategies in competing sensor networks

    E-Print Network [OSTI]

    Czarlinska, Aleksandra

    2009-05-15T23:59:59.000Z

    The fundamental objective of sensor networks underpinning a variety of applications is the collection of reliable information from the surrounding environment. The correctness of the collected data is especially important in applications involving...

  20. Copyrighted (Textbook) Fei Hu and Xiaojun Cao, Wireless Sensor Networks: Principles and Practice, CRC Press Page 1 Chapter 4: Routing in Wireless Sensor

    E-Print Network [OSTI]

    Hu, Fei

    Copyrighted (Textbook) Fei Hu and Xiaojun Cao, Wireless Sensor Networks: Principles and Practice, CRC Press Page 1 Chapter 4: Routing in Wireless Sensor Networks 4.1 Introduction to Routing in Wireless Sensor Networks Wireless Sensor Networks (WSNs) is a distributed wireless ad-hoc network

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

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

  2. Pancakes: A Software Framework for Distributed Robot and Sensor Network

    E-Print Network [OSTI]

    Egerstedt, Magnus

    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

  3. Distributed and Efficient Classifiers for Wireless Audio-Sensor Networks

    E-Print Network [OSTI]

    Nascimento, Mario A.

    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

  4. Calibration as Parameter Estimation in Sensor Networks Kamin Whitehouse

    E-Print Network [OSTI]

    Whitehouse, Kamin

    Calibration as Parameter Estimation in Sensor Networks Kamin Whitehouse UC Berkeley Berkeley, CA an ad-hoc localization system for sensor net- works and explain why traditional calibration methods are inadequate for this system. Building upon previous work, we frame calibration as a parameter estimation

  5. Compact Representation of Coordinated Sampling Policies for Body Sensor Networks

    E-Print Network [OSTI]

    Panangadan, Anand

    .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

  6. Achieving Energy Efficiency with Transmission Pushbacks in Sensor Networks

    E-Print Network [OSTI]

    Koksal, Can Emre

    Achieving Energy Efficiency with Transmission Pushbacks in Sensor Networks Sha Liu, Rahul of Electrical and Computer Engineering The Ohio State University The Ohio State University Columbus, Ohio 43210 Columbus, Ohio 43210 {liusha,prasun}@cse.ohio-state.edu {srivastr,koksal}@ece.osu.edu Abstract-- In sensor

  7. Saving Energy by Adjusting Transmission Power in Wireless Sensor Networks

    E-Print Network [OSTI]

    Rowe, Neil C.

    Saving Energy by Adjusting Transmission Power in Wireless Sensor Networks Xiao Chen Department and communication areas. Energy-efficient communication is an important issue in WSNs because of the limited power propose methods to reduce communication energy by minimizing the total sensor trans- mission power

  8. Energy Efficient Intrusion Detection in Camera Sensor Networks

    E-Print Network [OSTI]

    Guibas, Leonidas J.

    Energy Efficient Intrusion Detection in Camera Sensor Networks Primoz Skraba1 and Leonidas Guibas2 on low cost, low bandwidth sensors. With dropping costs and advances in imaging technology, there is now of challenges. If used continuously, cameras consume too much energy to operate on battery power. While

  9. Resource Allocation in Sensor Networks with Renewable Energy

    E-Print Network [OSTI]

    Koksal, Can Emre

    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 of the deployment challenges. These renewable sources of energy could be attached to the nodes and would typically

  10. A Realistic Power Consumption Model for Wireless Sensor Network Devices

    E-Print Network [OSTI]

    Hempstead, Mark

    . 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

  11. A Mobile Network for Mobile Sensors Andrea Simonetto

    E-Print Network [OSTI]

    Scerri, Paul

    approach is to send additional communication robots to form the network and keep sensor robots and human, the robots may need to constantly rearrange to adjust to sensor robot movement or failed communication robots graphs [5], allow robust robot positioning [6] and provide good coverage [7], have been applied

  12. Security Schemes for Wireless Sensor Networks with Mobile Sink

    E-Print Network [OSTI]

    Rasheed, Amar Adnan

    2011-08-08T23:59:59.000Z

    multi-hop approach used alone. 9 CHAPTER II KEY PRE-DISTRIBUTION SCHEMES FOR TOLERATING NODES CAPTURE IN SENSOR NETWORK WITH MS In this chapter, we propose two key pre-distribution schemes.... Taylor May 2010 Major Subject: Computer Science iii ABSTRACT Security Schemes for Wireless Sensor Networks with Mobile Sink. (May 2010) Amar Adnan Rasheed, B.S., University of Baghdad; M.S., Northeastern Illinois University Chair...

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

    E-Print Network [OSTI]

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

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

    E-Print Network [OSTI]

    Boyer, Edmond

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

  15. Intrusion detection and monitoring for wireless networks.

    SciTech Connect (OSTI)

    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

    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.

  16. Load Distribution in Large Scale Network Monitoring Infrastructures

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    Load Distribution in Large Scale Network Monitoring Infrastructures Josep Sanju`as-Cuxart, Pere to build a scalable, distributed passive network mon- itoring system that can run several arbitrary the principal research challenges behind building a distributed network monitoring system to support

  17. System Designs for Adaptive, Distributed Network Monitoring and Control

    E-Print Network [OSTI]

    Baras, John S.

    1 System Designs for Adaptive, Distributed Network Monitoring and Control H. Li, S. Yang, H. Xi.umd.edu Abstract We present system designs for adaptive, distributed network monitoring and control. The ideas are to distribute some processing intelligence to network elements, and to design a dynamic interface

  18. SeRLoc: Secure Range-Independent Localization for Wireless Sensor Networks

    E-Print Network [OSTI]

    Hochberg, Michael

    SeRLoc: Secure Range-Independent Localization for Wireless Sensor Networks Loukas Lazos and Radha, radha}@ee.washington.edu ABSTRACT In many applications of wireless sensor networks (WSN), sensors Localization, Wireless sensor networks, range-independent This work was supported in part by the following

  19. Bayesian Data and Channel Joint Maximum-Likelihood Based Error Correction in Wireless Sensor Networks

    E-Print Network [OSTI]

    Jagannatham, Aditya K.

    in wireless sensor networks (WSN). The proposed algo- rithm employs the temporal correlation of the narrowband Wireless Sensor Network (WSN), Likelihood, Sphere De- coder 1. INTRODUCTION Wireless Sensor Networks (WSNBayesian Data and Channel Joint Maximum-Likelihood Based Error Correction in Wireless Sensor

  20. A near optimal algorithm for lifetime optimization in wireless sensor networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A near optimal algorithm for lifetime optimization in wireless sensor networks Karine Deschinkel1.deschinkel, mourad.hakem}@univ-fcomte.fr Keywords: target coverage, wireless sensor networks, centralized method in wireless sensor networks (WSN) is lifetime optimization. Indeed, in WSN each sensor node is battery powered

  1. A Robust Boundary Detection Algorithm Based on Connectivity Only for 3D Wireless Sensor Networks

    E-Print Network [OSTI]

    Jin, Miao

    A Robust Boundary Detection Algorithm Based on Connectivity Only for 3D Wireless Sensor Networks algorithm, dubbed Coconut, for 3D wireless sensor networks. It first constructs a tetrahedral structure known in practical wireless sensor networks. Third, it is robust to sensor distribution, effectively

  2. Experimental Design and Analysis of Transmission Properties in an Indoor Wireless Sensor Network

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Experimental Design and Analysis of Transmission Properties in an Indoor Wireless Sensor Network channel common to an indoor, single-hop, wireless sensors networks in which the sensor deployment sensor network in a real-world indoor environment. We quantify the impact of primary factors

  3. Efficient Algorithms for the p-Self-Protection Problem in Static Wireless Sensor Networks

    E-Print Network [OSTI]

    Wang, Yu

    Efficient Algorithms for the p-Self-Protection Problem in Static Wireless Sensor Networks Yu Wang for static wireless sensor networks in this paper. The self-protection problem focuses on using sensor nodes nodes can resist the attacks targeting them directly. A wireless sensor network is p

  4. Sidewinder: A Predictive Data Forwarding Protocol for Mobile Wireless Sensor Networks

    E-Print Network [OSTI]

    Zhou, Gang

    Sidewinder: A Predictive Data Forwarding Protocol for Mobile Wireless Sensor Networks Matthew wireless sensor network deployments has received little study, such as in the case of floating sensor. Consequently, we propose Sidewinder, a predictive data forwarding protocol for mobile wireless sensor networks

  5. Multiple-Objective Metric for Placing Multiple Base Stations in Wireless Sensor Networks

    E-Print Network [OSTI]

    Liblit, Ben

    positioning in sensor networks based on directional antennas [6], but it addresses secure positioningMultiple-Objective Metric for Placing Multiple Base Stations in Wireless Sensor Networks Soo Kim in wireless sensor networks. First, the ratio of sensor nodes which can communicate with a base station via

  6. Radiochemical Sensor for Continuous and Remote Liquid Effluents Monitoring

    SciTech Connect (OSTI)

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

    2008-07-01T23:59:59.000Z

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

  7. Demonstration of damage with a wireless sensor network

    SciTech Connect (OSTI)

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

    2001-01-01T23:59:59.000Z

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

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

    DOE Patents [OSTI]

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

    1995-10-17T23:59:59.000Z

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

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

    DOE Patents [OSTI]

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

    1997-05-13T23:59:59.000Z

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

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

    DOE Patents [OSTI]

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

    1995-01-01T23:59:59.000Z

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

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

    DOE Patents [OSTI]

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

    1997-01-01T23:59:59.000Z

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

  12. Wireless Sensor Network for Advanced Energy Management Solutions

    SciTech Connect (OSTI)

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

    2009-09-23T23:59:59.000Z

    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

  13. Thermoelectric powered wireless sensors for spent fuel monitoring

    SciTech Connect (OSTI)

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

    2011-07-01T23:59:59.000Z

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

  14. Monitor and control of cockroach locomotion with piezoelectric sensors 

    E-Print Network [OSTI]

    Cooper, Rodrigo Alejandro

    2009-05-15T23:59:59.000Z

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

  15. Monitor and control of cockroach locomotion with piezoelectric sensors

    E-Print Network [OSTI]

    Cooper, Rodrigo Alejandro

    2009-05-15T23:59:59.000Z

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

  16. Dual Power Management for Network Connectivity in Wireless Sensor Networks Yanxia Rong

    E-Print Network [OSTI]

    Choi, Hyeong-Ah

    larger than the lower power level that is used to connect the nodes in the neighborhood. Hence, the dualDual Power Management for Network Connectivity in Wireless Sensor Networks Yanxia Rong , Hongsik@vcu.edu, hchoi@gwu.edu Abstract As the energy consumption in wireless sensor nodes is dominated by the radio

  17. Analytical Analysis of Data and Decision Fusion in Sensor Networks

    E-Print Network [OSTI]

    Gupta, Ajay

    accuracy and reliability of sensed readings of a network of wireless devices, while increasing the lifetime the significance of CSP might prompt hardware and software designers to optimize wireless sensor networks operations by simple averaging techniques. In practice, d is much larger than f. Therefore, total

  18. SDJS: The Duck Hunter Problem in Wireless Sensor Networks

    E-Print Network [OSTI]

    Beigl, Michael

    SDJS: The Duck Hunter Problem in Wireless Sensor Networks Albert Krohn, Tobias Zimmer, Michael) is a new transmission scheme targeted to highly mobile and ad hoc wireless sys- tems. It is based of devices in a mobile wireless ad hoc network. This new approach can increase the speed of the estimation

  19. DIFS: A Distributed Index for Features in Sensor Networks

    E-Print Network [OSTI]

    Govindan, Ramesh

    of nodes in such networks is energy. Nodes are expected to be long­lived (deployed not for hours minimize energy use. The primary energy consumer in such systems is radio transmission. For one scenario and amount of data produced increase. Consequently, in energy­constrained sensor networks it may be necessary

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

    E-Print Network [OSTI]

    Kulkarni, Sandeep

    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

  1. Infuse: A TDMA Based Data Dissemination Protocol for Sensor Networks

    E-Print Network [OSTI]

    Kulkarni, Sandeep

    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

  2. Power Control for Mobile Sensor Networks: An Experimental Approach

    E-Print Network [OSTI]

    Amir, Yair

    Power Control for Mobile Sensor Networks: An Experimental Approach JeongGil Ko Department--Techniques for controlling the transmission power of wireless mobile devices have been widely studied in ad-hoc and cellular characteristics of these networks, such as severe resource constraints, suggest that transmission power control

  3. Energy Efficient Multi-mode Operation for Networked Wireless Sensors

    E-Print Network [OSTI]

    Jay Yang, Shanchieh

    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

  4. Lifetime Benefits through Load Balancing in Homogeneous Sensor Networks

    E-Print Network [OSTI]

    Haenggi, Martin

    , battery depletion is emulated so that it becomes possible to actually measure the load balancingLifetime Benefits through Load Balancing in Homogeneous Sensor Networks Daniele Puccinelli network. The use of load balancing schemes can be expected to provide significant lifetime benefits

  5. Flexible Power Scheduling for Sensor Networks Barbara Hohlt

    E-Print Network [OSTI]

    Brewer, Eric A.

    Flexible Power Scheduling for Sensor Networks Barbara Hohlt Computer Science Division University, is a significant cost. Stemm et al. [27] observed that idle listening dominated the energy costs of network of California, Berkeley Berkeley, CA, USA 94720-1776 hohltb@eecs.berkeley.edu Lance Doherty Electrical

  6. Protecting bridges: reorganizing sensor networks after catastrophic events

    E-Print Network [OSTI]

    Bölöni, Ladislau L

    ¨ol¨oni and Damla Turgut Dept. of Electrical Engineering and Computer Science University of Central Florida Orlando cycle of a sensor network is the fragmentation of a network which still has many functional and well of packets. This paper describes the Bridge Protection Algorithm (BPA), a combination of techniques which

  7. Directed Budget-Based Clustering for Wireless Sensor Networks

    E-Print Network [OSTI]

    Stavrakakis, Ioannis

    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

  8. Temporal Privacy in Wireless Sensor Networks: Theory and Practice

    E-Print Network [OSTI]

    Xu, Wenyuan

    with knowledge of the network deployment, routing algorithms, and the base-station (data sink) location can infer that effectively manages these tradeoffs. Finally, we evaluate our privacy enhancement strategies using simulations, Measurement, Performance, Theory Additional Key Words and Phrases: Sensor networks, privacy, security

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

    SciTech Connect (OSTI)

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

    2012-08-31T23:59:59.000Z

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

  10. Exploring Spatial Correlation for Link Quality Estimation in Wireless Sensor Networks

    E-Print Network [OSTI]

    Lee, Dongwon

    Exploring Spatial Correlation for Link Quality Estimation in Wireless Sensor Networks Yingqi Xu in wireless sensor network design. Dynamic network conditions and environmental factors make an on-line, self and accurate estimation of link quality in wireless sensor networks. This algorithm captures the spatial

  11. Coverage of Wireless Sensor Networks Guo-Lie Lan 1,2

    E-Print Network [OSTI]

    Ma, Zhi-Ming

    Coverage of Wireless Sensor Networks Guo-Lie Lan 1,2 and Zhi-Ming Ma1 and Su-Yong Sun 1,2 1, sensor network, large-scale, wireless, uniform distribution. 1 Introduction Recently, there has been a growing interest in studying large-scale wireless sensor networks. Such a network consists of a large

  12. Maximum-Lifetime Multi-Channel Routing in Wireless Sensor Networks

    E-Print Network [OSTI]

    Nasipuri, Asis

    Maximum-Lifetime Multi-Channel Routing in Wireless Sensor Networks Amitangshu Pal and Asis Nasipuri and routing problem in multi-channel wireless sensor networks for maximizing the worst case network lifetime solution for the problem. Keywords: Wireless sensor networks, multi-channel rout- ing, distributed

  13. On the Coverage Problem in Video-based Wireless Sensor Networks

    E-Print Network [OSTI]

    Heinzelman, Wendi

    On the Coverage Problem in Video-based Wireless Sensor Networks Stanislava Soro and Wendi B Email: {soro, wheinzel}@ece.rochester.edu Abstract ­ Video-based wireless sensor networks continue differences between traditional wireless sensor networks and video-based networks that lead to such a result

  14. A Multi-Channel DS-CDMA Media Access Control Protocol for Wireless Sensor Networks

    E-Print Network [OSTI]

    New South Wales, University of

    in sensor network design. This may lead to sensor network MAC protocols which prioritize energy savings over are transmit- ted in the network, our system consumes only 10% of communication energy than the contention, on-board energy, with location awareness and organized in an ad hoc multi-hop network. Sensors

  15. Distributed Bayesian Hypothesis Testing in Sensor Networks M. Alanyali S. Venkatesh O. Savas S. Aeron

    E-Print Network [OSTI]

    Alanyali, Murat

    Distributed Bayesian Hypothesis Testing in Sensor Networks M. Alanyali S. Venkatesh O. Savas S. The sensors are distributed and can only exchange messages through a network. The sensor network is modelled as a message passing strategy to solve a distributed hypothesis testing problem for a pre-specified network

  16. Time Synchronization in Hierarchical TESLA Wireless Sensor Networks

    SciTech Connect (OSTI)

    Jason L. Wright; Milos Manic

    2009-08-01T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Simunic, Tajana

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

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

    E-Print Network [OSTI]

    Liu, Yunhao

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

  19. An infrastructure for passive network monitoring of application data streams

    SciTech Connect (OSTI)

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

    2003-03-01T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Pei, Sen; Zheng, Zhiming

    2015-01-01T23:59:59.000Z

    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...

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

    E-Print Network [OSTI]

    Yan, Linjun

    2006-01-01T23:59:59.000Z

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

  2. Wireless Sensors and Networks for Advanced Energy Management

    SciTech Connect (OSTI)

    Hardy, J.E.

    2005-05-06T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

    Giurgiutiu, Victor

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

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

    E-Print Network [OSTI]

    Giurgiutiu, Victor

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

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

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

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

    E-Print Network [OSTI]

    Nagy, Peter B.

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

  7. TCPL: A Defense against wormhole attacks in wireless sensor networks

    SciTech Connect (OSTI)

    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

    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.

  8. Explicit Sensor Network Localization using Semidefinite ...

    E-Print Network [OSTI]

    2010-01-29T23:59:59.000Z

    1.1 Graph of partial EDM with sensors ? and anchors ? . . . . . . . . . . . . . . . . . 7 ...... 1 Load UBi ? R|Ci|×(r+1) representing the face corresponding to clique Ci;.

  9. 334 IEEE/ACM TRANSACTIONS ON NETWORKING, VOL. 15, NO. 2, APRIL 2007 Maximizing Lifetime of Sensor Surveillance Systems

    E-Print Network [OSTI]

    Jia, Xiaohua

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

  10. Simultaneous localization and tracking in wireless ad-hoc sensor networks

    E-Print Network [OSTI]

    Taylor, Christopher J. (Christopher Jorgen)

    2005-01-01T23:59:59.000Z

    In this thesis we present LaSLAT, a sensor network algorithm that uses range measurements between sensors and a moving target to simultaneously localize the sensors, calibrate sensing hardware, and recover the target's ...

  11. Demonstration of Worldsens: A Fast Prototyping and Performance Evaluation of Wireless Sensor Network

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Demonstration of Worldsens: A Fast Prototyping and Performance Evaluation of Wireless Sensor environment for fast pro- totyping of wireless sensor protocols and applications. Our environment proposes sensor network simulation is feasible and that complex application design and deployment is affordable

  12. A Distributed Power Control and Routing Scheme for Rechargeable Sensor Networks

    E-Print Network [OSTI]

    Nasipuri, Asis

    A Distributed Power Control and Routing Scheme for Rechargeable Sensor Networks Amitangshu Pal power control and quality aware routing scheme for rechargeable wireless sensor networks (WSNs consumption based on estimated energy resources. Transmission power control has been widely researched

  13. Configurable Dynamic Privacy for Pervasive Sensor Networks Nan-Wei Gong

    E-Print Network [OSTI]

    1 Configurable Dynamic Privacy for Pervasive Sensor Networks by Nan-Wei Gong Submitted Privacy for Pervasive Sensor Networks by Nan-Wei Gong Submitted to the Program in Media Arts and Sciences

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

    SciTech Connect (OSTI)

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

    2012-10-09T23:59:59.000Z

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

  15. Evaluating the Health of California's Loop Sensor Network Ram Rajagopal1 and Pravin Varaiya

    E-Print Network [OSTI]

    Varaiya, Pravin

    Evaluating the Health of California's Loop Sensor Network Ram Rajagopal1 and Pravin Varaiya The California Department of Transportation (Caltrans) freeway sensor network has two compo- nents: the sensor system of 25,000 inductive loop sensors grouped into 8,000 vehicle detector sta- tions (VDS) and covering

  16. SecSens -Security Architecture for Wireless Sensor Networks Faruk Bagci, Theo Ungerer

    E-Print Network [OSTI]

    Ungerer, Theo

    of sensor boards. Keywords: wireless sensor network, security architec- ture, energy efficiency, multi between nodes enhances communication flexibility. Generally, sensor nodes have limited energy and re not be transferred to sensor networks. In recent years, the research was mainly focused on issues related to energy

  17. Performance monitoring in transparent optical networks using self-monitoring

    E-Print Network [OSTI]

    Kolner, Brian H.

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

  18. Reconfigurable middleware architectures for large scale sensor networks

    SciTech Connect (OSTI)

    Brennan, Sean M.

    2010-03-01T23:59:59.000Z

    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.

  19. Optimizing Warehouse Forklift Dispatching Using a Sensor Network and Stochastic Learning

    E-Print Network [OSTI]

    Paschalidis, Ioannis "Yannis"

    , detecting biological, chemical, and nuclear attacks [6, 7]. More examples of security applications come from]. Agriculture may also benefit from sensor networks. For example, [18] studied the potential use of sensor network in vineyard management; see also [19] on precision agriculture. Sensor networks have also been

  20. A Lightweight Framework for Source-to-Sink Data Transfer in Wireless Sensor Networks

    E-Print Network [OSTI]

    Krishnamurthy, Srikanth

    -- Lightweight protocols that are both bandwidth and power thrifty are desirable for sensor networks. In additionA Lightweight Framework for Source-to-Sink Data Transfer in Wireless Sensor Networks J. Jobin, for many sensor network applications, timeliness of data delivery at a sink that collects and interprets

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

    E-Print Network [OSTI]

    Liang, Weifa

    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

  2. Energy-efficient Capacity-constrained Routing in Wireless Sensor Networks

    E-Print Network [OSTI]

    Venkatesan, S.

    1 Energy-efficient Capacity-constrained Routing in Wireless Sensor Networks Maulin Patel*, R or maximize the lifetime of the sensor network without taking into consideration limited capacity of wireless-hoc networks; Routing; Maximum Lifetime; Energy efficient; Capacity-constrained I. INTRODUCTION Wireless sensor

  3. Parallel data processing architectures for identification of structural modal properties using dense wireless sensor networks

    E-Print Network [OSTI]

    Lynch, Jerome P.

    dense wireless sensor networks A.T. Zimmerman, R.A. Swartz, D.A. Saftner, J.P. Lynch Department of Civil core of a network of wireless sensors. The embedded algorithms implemented include the peak peaking of vibration tests so that modal parameters can be estimated by the network. Keywords: Wireless sensors, system

  4. Analytical Evaluation of Virtual Infrastructures for Data Dissemination in Wireless Sensor Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Analytical Evaluation of Virtual Infrastructures for Data Dissemination in Wireless Sensor Networks In this paper, we address the problem of data dissemination in wireless sensor networks (WSN) with mobile sink for an efficient data dissemination in wireless sensor networks. This virtual infrastructure acts as a rendez

  5. BeamStar: A New Low-cost Data Routing Protocol for Wireless Sensor Networks

    E-Print Network [OSTI]

    Hou, Y. Thomas

    BeamStar: A New Low-cost Data Routing Protocol for Wireless Sensor Networks Shiwen Mao and Y-assisted, location-aware routing protocol, which we call BeamStar, for wireless sensor networks. We make a major microorganisms, contaminant transport, ecosystems, and battlefields. Wireless sensor networks, in which each

  6. A Framework for Distributed Key Management Schemes in Heterogeneous Wireless Sensor Networks

    E-Print Network [OSTI]

    Hu, Jiankun

    A Framework for Distributed Key Management Schemes in Heterogeneous Wireless Sensor Networks Kejie propose a framework for key management schemes in distributed wireless sensor networks with heterogeneous, the wireless sensor network can achieve higher key connectivity and higher resilience. I. INTRODUCTION Wireless

  7. The Precision and Energetic Cost of Snapshot Estimates in Wireless Sensor Networks

    E-Print Network [OSTI]

    The Precision and Energetic Cost of Snapshot Estimates in Wireless Sensor Networks Paul G. Flikkema, the design space of wireless sensor networks is enormous, and traditional disciplinary boundaries of lower performance. I. INTRODUCTION One of the most intriguing applications of wireless sensor networking

  8. SEIF: Secure and Efficient Intrusion-Fault tolerant routing protocol for wireless sensor networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 SEIF: Secure and Efficient Intrusion-Fault tolerant routing protocol for wireless sensor networks Informatique Algiers, Algeria Email: lnoureddine4@gmail.com Abstract--In wireless sensor networks, reliability network, Security, Intrusion tolerance, Fault tolerance, Secure routing. I. INTRODUCTION Wireless Sensor

  9. Demo Abstract: Debugging Wireless Sensor Network Simulations with YETI and COOJA

    E-Print Network [OSTI]

    Demo Abstract: Debugging Wireless Sensor Network Simulations with YETI and COOJA Richard Huber. INTRODUCTION Developing and debugging applications for wireless sensor networks is know to be cumbersome sensor networks is a time consuming and error prone task, which possibly includes many iterations

  10. On optimizing energy consumption: An adaptative authentication level in wireless sensor networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    On optimizing energy consumption: An adaptative authentication level in wireless sensor networks-hungry. As energy is a scarce resource in wireless sensor networks, we propose a new approach that consists or third-party nodes. I. INTRODUCTION Wireless sensor networks (WSNs) are used in several fields

  11. Analysis of Energy Consumption and Lifetime of Heterogeneous Wireless Sensor Networks

    E-Print Network [OSTI]

    Liu, Mingyan

    Analysis of Energy Consumption and Lifetime of Heterogeneous Wireless Sensor Networks Enrique J-- The paper examines the performance as well as energy con- sumption issues of a wireless sensor network to be deployed in large quantities to form wireless sensor networks for a wide variety of purposes, e.g., im- age

  12. Wireless Sensor Network Localization Techniques Guoqiang Mao, Baris Fidan and Brian D.O. Anderson

    E-Print Network [OSTI]

    Scheuermann, Peter

    1 Wireless Sensor Network Localization Techniques Guoqiang Mao, Baris¸ Fidan and Brian D.O. Anderson Abstract-- Wireless sensor network localization is an important area that attracted significant on possible approaches to them. Index Terms-- wireless sensor networks, localization, AOA, RSS, TDOA. I

  13. Connectivity-based Distributed Coverage Hole Detection in Wireless Sensor Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Connectivity-based Distributed Coverage Hole Detection in Wireless Sensor Networks Feng Yan as an important measure of quality of service provided by a wireless sensor network (WSN). Yet, coverage holes may. INTRODUCTION Wireless sensor networks (WSNs) have attracted significant research attention due to their wide

  14. Self Organising Wireless Sensor Networks as a Land Management Tool in Developing Countries: A Preliminary Survey

    E-Print Network [OSTI]

    Haddadi, Hamed

    Self Organising Wireless Sensor Networks as a Land Management Tool in Developing Countries wireless sensor networks do to help? This overview discusses the environmental and technological challenges management. Self organising wireless sensor networks, if implemented adequately, have the potential to target

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

    E-Print Network [OSTI]

    Vokkarane, Vinod M.

    1 Node-Replacement Policies to Maintain Threshold-Coverage in Wireless Sensor Networks Sachin consider the problem of maintaining a minimum threshold-coverage in a wireless sensor network, while to maintain threshold-coverage in wireless sensor networks. These policies assess the candidature of each

  16. Simulation-based optimization of communication protocols for large-scale wireless sensor networks1

    E-Print Network [OSTI]

    Maróti, Miklós

    1 Simulation-based optimization of communication protocols for large-scale wireless sensor networks--The design of reliable, dynamic, fault-tolerant services in wireless sensor networks is a big challenge everyday life more comfortable, e.g. Intelligent Spaces [3]. These sensor networks often use distributed

  17. Secure and Scalable Cloud-based Architecture for e-Health Wireless sensor networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Secure and Scalable Cloud-based Architecture for e-Health Wireless sensor networks Ahmed Lounis--There has been a host of research works on wireless sensor networks for medical applications. However to achieve high flexibility and performance. Keywords: wireless sensor networks, healthcare, cloud com

  18. Statistical Approach to Radioactive Target Detection and Location via Wireless Sensor Networks

    E-Print Network [OSTI]

    Zhang, Tonglin

    Statistical Approach to Radioactive Target Detection and Location via Wireless Sensor Networks of radioactive target via wireless sensor networks. The statistical approach includes a hypotheses test this framework, a wireless sensor network (WSN) can be used as the system to obtain data. A statistical method

  19. Toward a high-fidelity wireless sensor network for rehabilitation supervision

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Toward a high-fidelity wireless sensor network for rehabilitation supervision Abdelkrim Hadjidj and the implementation of a new light-weight and easy to use wireless sensor network for high-fidelity rehabilitation performance through intensive real world experimentations and simulations. Keywords: wireless sensor networks

  20. A Low Latency MAC scheme for Event-Driven Wireless Sensor Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A Low Latency MAC scheme for Event-Driven Wireless Sensor Networks Hung-Cuong LE 1 , Hervé GUYENNET which we call LLMAC (Low Latency MAC) for event-driven wireless sensor networks (WSN). In this kind Introduction Wireless sensor network is a very hot research topic tendency in distributed systems. A WSN

  1. Demo Abstract: Signal Reconstruction with SubNyquist Sampling using Wireless Sensor Networks

    E-Print Network [OSTI]

    Gutierrez-Osuna, Ricardo

    Demo Abstract: Signal Reconstruction with SubNyquist Sampling using Wireless Sensor Networks Andria for sensor networks is an emerging class of application that can offer significant safety and util- ity sensor network may assist in the detection of living vic- tims trapped in collapsed buildings. As a step

  2. GCP: Gossip-based Code Propagation for Large-scale Mobile Wireless Sensor Network

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    GCP: Gossip-based Code Propagation for Large-scale Mobile Wireless Sensor Network Name: Yann Busnel-Marie Kermarrec Extended abstract Wireless sensor networks (WSN) are in a plentiful expansion. They are expected transmission. Keywords Wireless sensor network, mobile computing, large scale, diusion, software update

  3. Securing Wireless Sensor Networks: Introducing ASLAN -A Secure Lightweight Architecture for WSNs

    E-Print Network [OSTI]

    Dobson, Simon

    Securing Wireless Sensor Networks: Introducing ASLAN - A Secure Lightweight Architecture for WSNs://www.comp.dit.ie/mcollins 2 http://www.csi.ucd.ie/Staff/AcademicStaff/{sdobson, pnixon} Abstract Wireless sensor networks. To address the security vulnerabilities in a wireless sensor network, this paper proposes a secure

  4. Simulations of Wireless Sensor Networks: A ZhongYi Jin, Rajesh Gupta

    E-Print Network [OSTI]

    Gupta, Rajesh

    Simulations of Wireless Sensor Networks: A Survey Zhong­Yi Jin, Rajesh Gupta Computer Science the future research directions of wireless sensor network simu­ lators. A copy of this technical report can tools for the design, implementation and evaluation of sensor networks and have been the subject

  5. Very Large Scale Open Wireless Sensor Network Testbed Clement Burin des Rosiers2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    SensLAB Very Large Scale Open Wireless Sensor Network Testbed Cl´ement Burin des Rosiers2 wireless sensor network protocols and applications. SensLAB's main and most important goal is to offer examples to illustrate the use of the SensLAB testbed. Key words: Wireless Sensor Network, Testbed, Radio

  6. Partial Clustering: Maintaining Connectivity in a Low Duty-Cycled Dense Wireless Sensor Network

    E-Print Network [OSTI]

    Liu, Mingyan

    1 Partial Clustering: Maintaining Connectivity in a Low Duty-Cycled Dense Wireless Sensor Network of Michigan, Ann Arbor {chsin,mingyan}@eecs.umich.edu Abstract-- We consider a dense wireless sensor network their effectiveness and energy efficiency. Index Terms-- System design, wireless sensor networks, con- nectivity

  7. SensLAB: a Very Large Scale Open Wireless Sensor Network Testbed

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    SensLAB: a Very Large Scale Open Wireless Sensor Network Testbed C. Burin des Rosiers2 , G. Chelius- tations of scalable wireless sensor network protocols and applications. SensLAB's main and most important demonstration examples to illustrate the use of the SensLAB testbed. Keywords: Wireless Sensor Network, Testbed

  8. The Use of A Mobile Sink for Quality Data Collection in Energy Harvesting Sensor Networks

    E-Print Network [OSTI]

    Liang, Weifa

    of energy efficiency of battery-powered sensor networks (referred to as conventional sensor networksThe Use of A Mobile Sink for Quality Data Collection in Energy Harvesting Sensor Networks Xiaojiang, Australia Email: richard.rxj@anu.edu.au, wliang@cs.anu.edu.au Abstract--In this paper we study data

  9. Real-time Enabled IEEE 802.15.4 Sensor Networks in Industrial Automation

    E-Print Network [OSTI]

    Breu, Ruth

    Real-time Enabled IEEE 802.15.4 Sensor Networks in Industrial Automation Feng Chen, Thomas Talanis, Industry Automation Division, Germany Abstract--Sensor networks have been investigated in many scenarios, sensor networks became also an interesting topic in industrial automation. Here, the main focus

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    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

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

    E-Print Network [OSTI]

    Vickery, Daniel Robert

    2011-01-01T23:59:59.000Z

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

  12. Exploiting Heterogeneity in Sensor Networks Mark Yarvis

    E-Print Network [OSTI]

    Singh, Suresh

    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

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

    E-Print Network [OSTI]

    King, Timothy Wells

    1993-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Juarez, Juan Carlos

    2002-01-01T23:59:59.000Z

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

  15. Wireless Sensor Networks - Node Localization for Various Industry Problems

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Derr, Kurt; Manic, Milos

    2015-01-01T23:59:59.000Z

    Fast, effective monitoring following airborne releases of toxic substances is critical to mitigate risks to threatened population areas. Wireless sensor nodes at fixed predetermined locations may monitor such airborne releases and provide early warnings to the public. A challenging algorithmic problem is determining the locations to place these sensor nodes while meeting several criteria: 1) provide complete coverage of the domain, and 2) create a topology with problem dependent node densities, while 3) minimizing the number of sensor nodes. This manuscript presents a novel approach to determining optimal sensor placement, Advancing Front mEsh generation with Constrained dElaunay Triangulation and Smoothingmore »(AFECETS) that addresses these criteria. A unique aspect of AFECETS is the ability to determine wireless sensor node locations for areas of high interest (hospitals, schools, high population density areas) that require higher density of nodes for monitoring environmental conditions, a feature that is difficult to find in other research work. The AFECETS algorithm was tested on several arbitrary shaped domains. AFECETS simulation results show that the algorithm 1) provides significant reduction in the number of nodes, in some cases over 40%, compared to an advancing front mesh generation algorithm, 2) maintains and improves optimal spacing between nodes, and 3) produces simulation run times suitable for real-time applications.« less

  16. Wireless Sensor Networks - Node Localization for Various Industry Problems

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Derr, Kurt; Manic, Milos

    2015-01-01T23:59:59.000Z

    Fast, effective monitoring following airborne releases of toxic substances is critical to mitigate risks to threatened population areas. Wireless sensor nodes at fixed predetermined locations may monitor such airborne releases and provide early warnings to the public. A challenging algorithmic problem is determining the locations to place these sensor nodes while meeting several criteria: 1) provide complete coverage of the domain, and 2) create a topology with problem dependent node densities, while 3) minimizing the number of sensor nodes. This manuscript presents a novel approach to determining optimal sensor placement, Advancing Front mEsh generation with Constrained dElaunay Triangulation and Smoothing (AFECETS) that addresses these criteria. A unique aspect of AFECETS is the ability to determine wireless sensor node locations for areas of high interest (hospitals, schools, high population density areas) that require higher density of nodes for monitoring environmental conditions, a feature that is difficult to find in other research work. The AFECETS algorithm was tested on several arbitrary shaped domains. AFECETS simulation results show that the algorithm 1) provides significant reduction in the number of nodes, in some cases over 40%, compared to an advancing front mesh generation algorithm, 2) maintains and improves optimal spacing between nodes, and 3) produces simulation run times suitable for real-time applications.

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

    E-Print Network [OSTI]

    Giurgiutiu, Victor

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

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

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

  19. Abstract--Wireless Sensor Network (WSN) is an emerging special type of ad-hoc wireless networks technology. It is

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Abstract-- Wireless Sensor Network (WSN) is an emerging special type of ad-hoc wireless networks the needs for special type of applications where Wireless Sensor Networks (WSN) can play an important role that differentiate it from other types of wireless networks. These differences raise new challenges to be overcome

  20. Wireless Network architecture for Diagnosis and Monitoring Applications

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Wireless Network architecture for Diagnosis and Monitoring Applications Zeashan Hameed Khan, Jean.Genon-Catalot@iut-valence.fr Abstract-- This paper describes a distributed wireless network architecture for remote diagnosis a wireless network architecture for tele-operation of large industrial applications. Keywords- Wireless