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


1

Wireless sensor network survey  

Science Conference Proceedings (OSTI)

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

Jennifer Yick; Biswanath Mukherjee; Dipak Ghosal

2008-08-01T23:59:59.000Z

2

Wireless Sensor Network Fundamentals  

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

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

3

Miniaturized wireless sensor network  

E-Print Network (OSTI)

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

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

2010-01-01T23:59:59.000Z

4

Mobility in Wireless Sensor Networks  

E-Print Network (OSTI)

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

Mehta, Ankur Mukesh

2012-01-01T23:59:59.000Z

5

Security for wireless sensor networks  

Science Conference Proceedings (OSTI)

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

Sasikanth Avancha; Jeffrey Undercoffer; Anupam Joshi; John Pinkston

2004-01-01T23:59:59.000Z

6

Simulating networks of wireless sensors  

Science Conference Proceedings (OSTI)

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

Sung Park; Andreas Savvides; Mani B. Srivastava

2001-12-01T23:59:59.000Z

7

Securing network access in wireless sensor networks  

Science Conference Proceedings (OSTI)

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

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

2009-03-01T23:59:59.000Z

8

A survey on wireless sensor network infrastructure for agriculture  

Science Conference Proceedings (OSTI)

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

Xiaoqing Yu; Pute Wu; Wenting Han; Zenglin Zhang

2013-01-01T23:59:59.000Z

9

for distributed wireless sensor networks  

E-Print Network (OSTI)

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

Brett A. Warneke; Kristofer S. J. Pister

2002-01-01T23:59:59.000Z

10

Wireless sensor networks for habitat monitoring  

Science Conference Proceedings (OSTI)

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

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

2002-09-01T23:59:59.000Z

11

Wireless sensor network operating systems: a survey  

Science Conference Proceedings (OSTI)

The design of operating system for Wireless Sensor Network (WSN) deviates from the traditional operating system design due to their specific characteristics like constrained resources, high dynamics and inaccessible deployment environments. We ... Keywords: TinyOS, WSN operating systems, WSNs, ad-hoc networks, applications, characteristics, classification framework, design, embedded systems, reprogramming, survey, virtual machines, wireless networks, wireless sensor networks

Adi Mallikarjuna V. Reddy; A.V.U. Phani Kumar; D. Janakiram; G. Ashok Kumar

2009-08-01T23:59:59.000Z

12

Wireless sensor networks for soil science  

Science Conference Proceedings (OSTI)

Wireless sensor networks can revolutionise soil ecology by providing measurements at temporal and spatial granularities previously impossible. This paper presents our first steps towards fulfilling that goal by developing and deploying two experimental ... Keywords: WSNs, environmental monitoring, soil moisture, soil monitoring, soil science, soil temperature, urban forests, web services, wireless networks, wireless sensor networks

Andreas Terzis; Razvan Musaloiu-E.; Joshua Cogan; Katalin Szlavecz; Alexander Szalay; Jim Gray; Stuart Ozer; Chieh-Jan Mike Liang; Jayant Gupchup; Randal Burns

2010-02-01T23:59:59.000Z

13

Zonal Rumor Routing for Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

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

Tarun Banka; Gagan Tandon; Anura P. Jayasumana

2005-04-01T23:59:59.000Z

14

Wireless sensor networks and human comfort index  

Science Conference Proceedings (OSTI)

Conventional wireless home automation networks (WHANs) incorporate embedded wireless sensors and actuators that monitors and control home living environment. WHAN's primary goal is to maintain user comfort and efficient home management. Conventional ... Keywords: Ambient intelligence, Fuzzy logic, Human comfort, Wireless sensor network

Mohd Izani Rawi, Adnan Al-Anbuky

2013-06-01T23:59:59.000Z

15

Efficient XML usage within wireless sensor networks  

Science Conference Proceedings (OSTI)

Integrating wireless sensor networks in heterogeneous networks is a complex task. A reason is the absence of a standardized data exchange format that is supported in all participating sub networks. XML has evolved to the de facto standard data exchange ... Keywords: XML, database management, programming language, wireless sensor networks

Nils Hoeller; Christoph Reinke; Jana Neumann; Sven Groppe; Daniel Boeckmann; Volker Linnemann

2008-11-01T23:59:59.000Z

16

Energy Saving Methods in Wireless Sensor Networks.  

E-Print Network (OSTI)

?? To predict the lifetime of wireless sensor networks before their installation is an important concern. The IEEE 802.15.4 standard is specifically meant to support… (more)

JAWAD ALI, SYED

2008-01-01T23:59:59.000Z

17

LUSTER: wireless sensor network for environmental research  

Science Conference Proceedings (OSTI)

Environmental wireless sensor network (EWSN) systems are deployed in potentially harsh and remote environments where inevitable node and communication failures must be tolerated. LUSTER---Light Under Shrub Thicket for Environmental Research---is a system ... Keywords: LiteTDMA, architecture, environmental science, implementation, mote, network protocol, storage, validation, wireless sensor network

L. Selavo; A. Wood; Q. Cao; T. Sookoor; H. Liu; A. Srinivasan; Y. Wu; W. Kang; J. Stankovic; D. Young; J. Porter

2007-11-01T23:59:59.000Z

18

Battery Allocation for Maximizing Lifetime of Wireless Sensor Networks.  

E-Print Network (OSTI)

??Wireless sensor network has been an area of interest among researchers. Designing a wireless sensor network involves multiple issues such as size and processing capacity… (more)

Khambete, Ketki

2010-01-01T23:59:59.000Z

19

Diagnostic tracing for wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks are typically deployed in harsh environments, thus post-deployment failures are not infrequent. An execution trace containing events in their order of execution could play a crucial role in postmortem diagnosis of these failures. ... Keywords: Embedded debugging, diagnosis, tracing, wireless sensor networks

Vinaitheerthan Sundaram; Patrick Eugster; Xiangyu Zhang; Vamsidhar Addanki

2013-07-01T23:59:59.000Z

20

Cooperative caching in wireless multimedia sensor networks  

Science Conference Proceedings (OSTI)

The recent advances in miniaturization and the creation of low-power circuits, combined with small-sized batteries have made the development of wireless sensor networks a working reality. Lately, the production of cheap complementary metal-oxide semiconductor ... Keywords: cooperative caching, multimedia, replacement policy, wireless sensor networks

Nikos Dimokas; Dimitrios Katsaros; Yannis Manolopoulos

2008-08-01T23:59:59.000Z

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


21

Wireless sensor networks for healthcare: A survey  

Science Conference Proceedings (OSTI)

Becoming mature enough to be used for improving the quality of life, wireless sensor network technologies are considered as one of the key research areas in computer science and healthcare application industries. The pervasive healthcare systems provide ... Keywords: Care for elderly, Children and chronically ill, Pervasive healthcare, Wireless sensor networks

Hande Alemdar; Cem Ersoy

2010-10-01T23:59:59.000Z

22

Efficient code distribution in wireless sensor networks  

Science Conference Proceedings (OSTI)

The need to reprogramme a wireless sensor network may arise from changing application requirements, bug fixes, or during the application development cycle. Once deployed, it will be impractical at best to reach each individual node. Thus, a scheme is ... Keywords: code distribution, compression, reprogramming, sensor networks, string distance, wireless

Niels Reijers; Koen Langendoen

2003-09-01T23:59:59.000Z

23

Deterministic Secure Positioning in Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

Position verification problem is an important building block for a large subset of wireless sensor networks (WSN) applications. As a result, the performance of the WSN degrades significantly when misbehaving nodes report false location information in ... Keywords: Distributed Protocol, Secure Positioning, Wireless Sensor Network

Sylvie Delaët; Partha Sarathi Mandal; Mariusz A. Rokicki; Sébastien Tixeuil

2008-06-01T23:59:59.000Z

24

Automatic decentralized clustering for wireless sensor networks  

Science Conference Proceedings (OSTI)

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

Chih-Yu Wen; William A. Sethares

2005-10-01T23:59:59.000Z

25

Networked computing in wireless sensor networks for structural health monitoring  

Science Conference Proceedings (OSTI)

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. ... Keywords: clustering, degree-constrained data collection tree, networked computing, singular value decomposition (SVD), structural health monitoring (SHM), wireless sensor networks (WSNs)

Apoorva Jindal; Mingyan Liu

2012-08-01T23:59:59.000Z

26

Underground Structure Monitoring with Wireless Sensor Networks  

E-Print Network (OSTI)

University of Science and Technology {limo, liu}@cse.ust.hk ABSTRACT Environment monitoring in coal mines, Underground, Coal Mine 1. INTRODUCTION A Wireless Sensor Network (WSN) is a self-organized wireless network and widths of several meters) has been a crucial task to ensure safe working conditions in coal mines where

Liu, Yunhao

27

Deploying a Wireless Sensor Network on an Active Volcano  

Science Conference Proceedings (OSTI)

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

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

2006-03-01T23:59:59.000Z

28

Intelligent Lighting System Using Wireless Sensor Networks  

E-Print Network (OSTI)

This paper examines the use of Wireless Sensor Networks interfaced with light fittings to allow for daylight substitution techniques to reduce energy usage in existing buildings. This creates a wire free system for existing buildings with minimal disruption and cost.

Kumaar, A A Nippun; TSB, Sudarshan; 10.5121/ijasuc.2010.1402

2011-01-01T23:59:59.000Z

29

Cooperative caching in wireless multimedia sensor networks  

Science Conference Proceedings (OSTI)

The recent advances in miniaturization and the creation of low-power circuits, combined with small-sized batteries have made the development of wireless sensor networks a working reality. Lately, the production of cheap CMOS cameras and microphones gave ...

Nikos Dimokas; Dimitrios Katsaros; Yannis Manolopoulos

2007-08-01T23:59:59.000Z

30

Data acquisition scheduling for wireless sensors networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks have been increasingly studied by industry and academic institutions due to their potential application in environmental and geothermal monitoring, security enhancement among others. Such technology would play an important role ...

Carlos Gamboa / Thomas Robertazzi

2008-01-01T23:59:59.000Z

31

Clear channel assessment in wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks are a rising commodity that demonstrate merit in the research domain due to their versatile nature. While powerful and feature-laden, these systems also require careful configuration for optimal packet transmission. This experiment ...

J. Collin Engstrom; Chase Gray

2008-03-01T23:59:59.000Z

32

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

E-Print Network (OSTI)

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

Gau, Ding-hau

2009-01-01T23:59:59.000Z

33

Sleep scheduling for wireless sensor networks via network flow model  

Science Conference Proceedings (OSTI)

The pervasiveness and operational autonomy of mesh-based wireless sensor networks (WSNs) make them an ideal candidate in offering sustained monitoring functions at reasonable cost over a wide area. There has been a general consensus within the research ... Keywords: Cross-layer design, Integer linear programming, Network flow model, Sleep scheduling, Wireless sensor networks

Rick W. Ha; Pin-Han Ho; X. Sherman Shen; Junshan Zhang

2006-08-01T23:59:59.000Z

34

A virtual infrastructure for large-scale wireless sensor networks  

Science Conference Proceedings (OSTI)

The primary goal of a wireless sensor network is to collect useful information from the network. Most wireless sensor networks are assumed that the number of nodes are very large and they should operate with confined resources. Consequently it is important ... Keywords: Data collection, Railroad, Topology, Wireless sensor networks

Jeong-Hun Shin; Daeyeon Park

2007-10-01T23:59:59.000Z

35

Dual wakeup design for wireless sensor networks  

Science Conference Proceedings (OSTI)

Energy is often identified as the single most important resource in wireless battery-powered sensor networks. While current wakeup schemes in the literature promise to conserve energy in such networks, they apply several assumptions that may not be always ... Keywords: Cyclic block design, Dual wakeup design, Energy conservation, Lonely node, Time-tolerance sensing

Y. F. Wong; L. H. Ngoh; Winston K. G. Seah; Wai-Choong Wong

2009-01-01T23:59:59.000Z

36

Strategies and Challenges for Interconnecting Wireless Mesh and Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks and wireless mesh networks are popular research subjects. The interconnection of both network types enables next-generation applications and creates new optimization opportunities. However, current single-gateway solutions are ... Keywords: Cooperation strategies, Future networks, Wireless mesh network, Wireless sensor network

Stefan Bouckaert; Eli De Poorter; Benôit Latré; Jeroen Hoebeke; Ingrid Moerman; Piet Demeester

2010-05-01T23:59:59.000Z

37

Hierarchical distributed data classification in wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks promise an unprecedented opportunity to monitor physical environments via inexpensive wireless embedded devices. Given the sheer amount of sensed data, efficient classification of them becomes a critical task in many sensor network ... Keywords: C4.5, Classification, Decision tree, Wireless sensor network

Xu Cheng; Ji Xu; Jian Pei; Jiangchuan Liu

2010-07-01T23:59:59.000Z

38

Coordination in wireless sensor-actuator networks: A survey  

Science Conference Proceedings (OSTI)

Wireless Sensor-Actuator Networks (WSANs) have a myriad of applications, ranging from pacifying bulls to controlling light intensity in homes automatically. An important aspect of WSANs is coordination. Unlike conventional Wireless Sensor Networks (WSNs), ... Keywords: Actuators, Coordination, Energy efficiency, Wireless sensor and actuator networks

Hamidreza Salarian; Kwan-Wu Chin; Fazel Naghdy

2012-07-01T23:59:59.000Z

39

A Delaunay Triangulation based method for wireless sensor network deployment  

Science Conference Proceedings (OSTI)

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

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

2007-10-01T23:59:59.000Z

40

A Uniform Balancing Energy Routing Protocol for Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

In wireless sensor network, the power supply is, generally, a non-renewable battery. Consequently, energy effectiveness is a crucial factor. To maximize the battery life and therefore, the duration of network service, a robust wireless communication ... Keywords: Ad-hoc networks, Energy balancing, Energy efficiency, Sensor networks, Wireless communications

Ouadoudi Zytoune; Mohamed El Aroussi; Driss Aboutajdine

2010-10-01T23:59:59.000Z

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


41

Self-destruction procedure for mesh wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks (WSN) are rapidly expanding their attractiveness in both military and civilian applications, imposing the need for effective security strategies/mechanisms. Since sensor networks in many circumstances operate with sensitive data ... Keywords: mesh networks, network lifecycle, security, self-destruction, wireless sensor networks

Madalin Plastoi; Daniel-Ioan Curiac; Iosif Gut; Constantin Volosencu

2009-09-01T23:59:59.000Z

42

Power-Rate-Distortion Analysis Of Wireless Visual Sensor Network.  

E-Print Network (OSTI)

??The emergence of low-cost and mature technologies in wireless communication, visual sensor devices, and digtial signal processing, facilitates the potential of wirelss sensor networks (WSN).… (more)

Shaw, William

2008-01-01T23:59:59.000Z

43

PIPENETa wireless sensor network for pipeline monitoring  

Science Conference Proceedings (OSTI)

US water utilities are faced with mounting operational and maintenance costs as a result of aging pipeline infrastructures. Leaks and ruptures in water supply pipelines and blockages and overflow events in sewer collectors cost millions of dollars a ... Keywords: Intel mote platforms, pipeline monitoring, water supply systems, wireless sensor networks

Ivan Stoianov; Lama Nachman; Sam Madden; Timur Tokmouline

2007-04-01T23:59:59.000Z

44

An efficient synchronisation protocol for wireless sensor network  

Science Conference Proceedings (OSTI)

Time synchronisation is a critical topic in wireless sensor networks for its wide applications, such as data fusion, TDMA scheduling and cooperated sleeping, etc. In this paper, we present an Accurate Time Synchronisation (ATS) protocol based on ... Keywords: WSNs, drift, linear least squares, offset, time synchronisation, wireless networks, wireless sensor networks

Liusheng Huang; Hongli Xu; Yingyu Wan; Junmin Wu; Hong Li

2007-04-01T23:59:59.000Z

45

Optimized relay node placement for connecting disjoint wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks (WSNs) often operate in a harsh environment such as battlefield and may suffer simultaneous failure of multiple sensors that cause the network to become partitioned into disjoint segments. In order to prevent the application ... Keywords: Connectivity restoration, Network partitioning, Relay node placement, Wireless sensor networks

Sookyoung Lee; Mohamed Younis

2012-08-01T23:59:59.000Z

46

Dynamic priority scheduling-based MAC for wireless sensor networks  

Science Conference Proceedings (OSTI)

In this paper, one of the most important issues supporting real-time QoS in wireless sensor networks is discussed, which is fundamentally a challenging problem. A novel MAC protocol based on dynamic priority scheduling is proposed for wireless sensor ... Keywords: MAC, Motes MICA 2, QoS, WSNs, dynamic priority scheduling, medium access control, quality of service, wireless networks, wireless sensor networks

Jiming Chen; Youxian Sun

2007-04-01T23:59:59.000Z

47

A survey on clustering algorithms for wireless sensor networks  

Science Conference Proceedings (OSTI)

The past few years have witnessed increased interest in the potential use of wireless sensor networks (WSNs) in applications such as disaster management, combat field reconnaissance, border protection and security surveillance. Sensors in these applications ... Keywords: Clustering algorithms, Energy aware design, Network architecture, Scalability, Wireless sensor networks

Ameer Ahmed Abbasi; Mohamed Younis

2007-10-01T23:59:59.000Z

48

Review: From wireless sensor networks towards cyber physical systems  

Science Conference Proceedings (OSTI)

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

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

2011-08-01T23:59:59.000Z

49

A middleware-based approach for heterogeneous wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks (WSN) are networked embedded systems that use small size devices with some processing and short-range radio communication capabilities for monitoring and controlling systems and environments. However, languages and IDE (Integrated ... Keywords: heterogeneous networks, middleware, wireless sensor networks

F. Graziosi; L. Pomante; D. Pacifico

2008-07-01T23:59:59.000Z

50

A lightweight approach to mobile multicasting in Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

Wireless Sensor Networks (WSN) are envisioned to have significant impacts on many applications. In scenarios such as first responder systems and administrative applications, data sinks are frequently being mobile. In this research, we study one-to-many ... Keywords: WSN, ad hoc computing, ad hoc networks, mobile multicasting, pervasive computing, sensor networks, simulation, target tracking, ubiquitous computing, wireless networks

Qing Ye; Liang Cheng

2006-12-01T23:59:59.000Z

51

Wireless SensorWireless Sensor NetworkNetwork  

E-Print Network (OSTI)

consumption related to ICT varying from 2% to 10% of the worldwide power consumption [5]. It is worth consumption in network by 2015 [10]. In the current telecommunications networks, the vast majority, modems, line cards, etc.), a direct estimation of network equipment power consumption is notoriously

Kabara, Joseph

52

A Delaunay Triangulation Based Method for Wireless Sensor Network Deployment  

Science Conference Proceedings (OSTI)

To obtain a satisfied performance of wireless sensor network, an adaptable sensor deployment method for various applications is essential. In this paper, we propose a centralized sensor deployment method, DT-Score, aims to maximize the coverage of a ...

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

2006-07-01T23:59:59.000Z

53

Small-world effects in wireless agent sensor networks  

Science Conference Proceedings (OSTI)

We describe a model for analysing the coverage graph from physical placement of mobile agents or sensor devices to improve coverage, fault tolerance and network lifetime. The planar graph for the devices is augmented by small-world network 'short-cuts'; ... Keywords: WSNs, clustering algorithms, connectivity graphs, fault tolerance, mobile agents, mobile sensors, modelling, network coverage, network lifetime, optimal coverage, percolation, scaling, small-world networks, wireless agents, wireless sensor networks

K. A. Hawick; H. A. James

2010-07-01T23:59:59.000Z

54

Energy-efficient connected-coverage in wireless sensor networks  

Science Conference Proceedings (OSTI)

This paper addresses the target coverage problem inWireless Sensor Networks (WSNs). Communication and sensing consume energy, therefore, efficient power management can extend network lifetime. In this paper, we consider a large number of sensors ...

Ionut Cardei; Mihaela Cardei

2008-05-01T23:59:59.000Z

55

Time-bounded essential localization for wireless sensor networks  

Science Conference Proceedings (OSTI)

In many practical applications of wireless sensor networks, it is crucial to accomplish the localization of sensors within a given time bound. We find that the traditional definition of relative localization is inappropriate for evaluating its actual ... Keywords: essential localization, relative localization, time-bounded localization, wireless sensor networks

Wei Cheng; Nan Zhang; Xiuzhen Cheng; Min Song; Dechang Chen

2013-04-01T23:59:59.000Z

56

Location privacy and resilience in wireless sensor networks querying  

Science Conference Proceedings (OSTI)

Due to the wireless nature of communication in sensor networks, the communication patterns between sensors could be leaked regardless of the adoption of encryption mechanisms-those would just protect the message content. However, communication patterns ... Keywords: Location privacy, Probabilistic algorithm, Resiliency, Security, Wireless sensor networks

Roberto Di Pietro; Alexandre Viejo

2011-03-01T23:59:59.000Z

57

Wireless sensor networks: Enabling technology for ambient intelligence  

Science Conference Proceedings (OSTI)

Wireless sensor networks are one of the most rapidly evolving research and development fields for microelectronics. Their applications are countless, and the market potentials are huge. However, many technical hurdles have to be overcome to achieve a ... Keywords: Bio-sensors, Embedded systems, Energy efficiency, Wireless sensor networks

L. Benini; E. Farella; C. Guiducci

2006-12-01T23:59:59.000Z

58

Information fusion for wireless sensor networks: Methods, models, and classifications  

Science Conference Proceedings (OSTI)

Wireless sensor networks produce a large amount of data that needs to be processed, delivered, and assessed according to the application objectives. The way these data are manipulated by the sensor nodes is a fundamental issue. Information fusion arises ... Keywords: Information fusion, architectures and models, data aggregation, data fusion, wireless sensor networks

Eduardo F. Nakamura; Antonio A. F. Loureiro; Alejandro C. Frery

2007-09-01T23:59:59.000Z

59

Ensemble based sensing anomaly detection in wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks are often used to monitor and measure physical characteristics from remote and sometimes hostile environments. In these circumstances the sensing data accuracy is a crucial attribute for the way these applications complete their ... Keywords: Binary classifier, Data accuracy, Ensemble based systems, Sensors anomalies, Wireless sensor networks

Daniel-Ioan Curiac; Constantin Volosencu

2012-08-01T23:59:59.000Z

60

Energy conservation in wireless sensor networks: A survey  

Science Conference Proceedings (OSTI)

In the last years, wireless sensor networks (WSNs) have gained increasing attention from both the research community and actual users. As sensor nodes are generally battery-powered devices, the critical aspects to face concern how to reduce the energy ... Keywords: Energy efficiency, Power management, Survey, Wireless sensor networks

Giuseppe Anastasi; Marco Conti; Mario Di Francesco; Andrea Passarella

2009-05-01T23:59:59.000Z

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


61

Energy Management in Wireless Sensor Network Operations  

E-Print Network (OSTI)

In this dissertation, we develop and analyze effective energy management policies for wireless sensor networks in emerging applications. Existing methods in this area have primarily focused on energy conservation through the use of various communication techniques. However, in most applications of wireless sensor networks, savings in energy come at the expense of several performance parameters. Therefore it is necessary to manage energy consumption while being conscious of its effects on performance. In most cases, such energy-performance issues are specific to the nature of the application. Our research has been motivated by new techniques and applications where efficient energy-performance trade-off decisions are required. We primarily study the following trade-off cases: energy and node replacement costs (Case I), energy and delay (Case II), and energy and availability (Case III). We consider these trade-off situations separately in three distinct problem scenarios. In the first 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 and node replacement policy approach and develop effective policies for large problem instances where our MIP models are intractable. In the second problem (Case II), we develop a Markov decision process (MDP) model to manage energy-delay trade-off in network coding which is a new energy-saving technique for wireless networks. Here we derive properties of the optimal policy and develop in- sights into other simple policies that are later shown to be efficient in particular situations. In the third problem (Case III), we consider an autonomous energy harvesting sensor network where nodes are turned off from time to time to operate in an “energy-neutral” manner. In this case, we use stochastic fluid-flow analysis to evaluate and analyze the availability of the sensor nodes under effective energy management policies. In each of the above problem cases, we develop analytical formulations, and derive and/or analyze policies that effectively manage the considered energy-performance trade-off. Overall, our analyses and solution methods make new contributions to both operations research and communication networking literature.

Mohapatra, Arupa Kumar

2013-08-01T23:59:59.000Z

62

Energy Distribution Control in Wireless Sensor Networks Through Range Optimization  

E-Print Network (OSTI)

Energy Distribution Control in Wireless Sensor Networks Through Range Optimization M.Sarper Gokturk a location-based routing framework to control the energy distribution in a network where transmission ranges--A major objective in wireless sensor networks is to find optimum routing strategies for energy efficient

Yanikoglu, Berrin

63

Data aggregation in wireless sensor networks using ant colony algorithm  

Science Conference Proceedings (OSTI)

Data aggregation is important in energy constraint wireless sensor networks which exploits correlated sensing data and aggregates at the intermediate nodes to reduce the number of messages exchanged network. This paper considers the problem of constructing ... Keywords: Ant colony, Data aggregation, Wireless sensor networks

Wen-Hwa Liao; Yucheng Kao; Chien-Ming Fan

2008-11-01T23:59:59.000Z

64

Radio link quality estimation in wireless sensor networks: A survey  

Science Conference Proceedings (OSTI)

Radio link quality estimation in Wireless Sensor Networks (WSNs) has a fundamental impact on the network performance and also affects the design of higher-layer protocols. Therefore, for about a decade, it has been attracting a vast array of research ... Keywords: Link quality estimation, link characteristics, low-power links, wireless sensor networks

Nouha Baccour; Anis Koubâa; Luca Mottola; Marco Antonio Zúñiga; Habib Youssef; Carlo Alberto Boano; Mário Alves

2012-09-01T23:59:59.000Z

65

Adaptive design optimization of wireless sensor networks using genetic algorithms  

Science Conference Proceedings (OSTI)

We present a multi-objective optimization methodology for self-organizing, adaptive wireless sensor network design and energy management, taking into consideration application-specific requirements, communication constraints and energy-conservation characteristics. ... Keywords: Adaptive network design, Energy conservation, Genetic algorithms, Optimal design, Wireless sensor networks

Konstantinos P. Ferentinos; Theodore A. Tsiligiridis

2007-03-01T23:59:59.000Z

66

Solar-Aware clustering in wireless sensor networks  

E-Print Network (OSTI)

Energy conservation plays a crucial in wireless sensor networks since such networks are designed to be placed in hostile and non-accessible areas. While battery-driven sensors will run out of battery sooner or later, the use of renewable energy sources such as solar power or gravitation may extend the lifetime of a sensor network. We propose to utilize solar power in wireless sensor networks and extend LEACH a well-known cluster-based protocol for sensor networks to become solar-aware. The presented simulation results show that making LEACH solar-aware significantly extends the lifetime of sensor networks. 1

Thiemo Voigt; Hartmut Ritter

2004-01-01T23:59:59.000Z

67

Diagnostic Tools for Wireless Sensor Networks: A Comparative Survey  

Science Conference Proceedings (OSTI)

The availability of tools to diagnose Wireless Sensor Network (WSN) failures is a key success factor for this type of networks as already demonstrated by several long-running deployments. By nature, WSNs are resource-constrained, fragile, complex to ... Keywords: Embedded debugging, Sensor diagnosing, Sensor failure, Sensor networks, Testing and debugging

André Rodrigues; Tiago Camilo; Jorge Sá Silva; Fernando Boavida

2013-09-01T23:59:59.000Z

68

Techniques for mitigating congestion in wireless sensor networks  

E-Print Network (OSTI)

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 ...

Hull, Bret Warren, 1980-

2005-01-01T23:59:59.000Z

69

Modeling the Behavior of an Electronically Switchable Directional Antenna for Wireless Sensor Networks.  

E-Print Network (OSTI)

??Reducing power consumption is among the top concerns in Wireless Sensor Networks, as the lifetime of a Wireless Sensor Network depends on its power consumption.… (more)

Silase, Geletu

2011-01-01T23:59:59.000Z

70

Vampire Attacks: Draining Life from Wireless Ad Hoc Sensor Networks  

Science Conference Proceedings (OSTI)

Ad hoc low-power wireless networks are an exciting research direction in sensing and pervasive computing. Prior security work in this area has focused primarily on denial of communication at the routing or medium access control levels. This paper explores ... Keywords: Denial of service, security, routing, ad hoc networks, sensor networks, wireless networks

Eugene Y. Vasserman; Nicholas Hopper

2013-02-01T23:59:59.000Z

71

Distributed optimal dynamic base station positioning in wireless sensor networks  

Science Conference Proceedings (OSTI)

Base station (BS) positioning is an effective method for improving the performance of wireless sensor networks (WSNs). A metric-aware optimal BS positioning and relocation mechanism for WSNs is proposed. This technique locates the BS with respect to ... Keywords: Base station placement, Base station relocation, Least-squares optimization, Wireless sensor networks

P. D. Hossein Zadeh; C. Schlegel; M. H. MacGregor

2012-01-01T23:59:59.000Z

72

Some comments on wireless sensor networks for natural hazards  

Science Conference Proceedings (OSTI)

Presently, the urgency of creating efficient system to tackle natural hazards such as tsunamis, earthquakes, landslides and floods to cite just a few, have originated that Wireless Sensor Networks (WSNs) play an increasingly important role in the natural ... Keywords: early warning systems, earthquakes, landslides, mobile robotics, tsunamis, wireless sensor networks

M. A. Grado-Caffaro; M. Grado-Caffaro; Mohammad Sadegh Ebrahimi

2011-12-01T23:59:59.000Z

73

A secure monitoring and control system for Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

The maintenance of Wireless Sensor Networks (WSNs) can carry high or prohibitive costs, particularly, if the WSN is deployed in unattended areas. Secure monitoring and control of the WSN is vital, however, practical systems are rare and limited with ... Keywords: Monitoring,Wireless sensor networks,Control systems,Intrusion detection,Elliptic curve cryptography

Michael Riecker, Rainer Thome, Dingwen Yuan, Matthias Hollick

2012-10-01T23:59:59.000Z

74

Wireless sensor networks based on publish/subscribe messaging paradigms  

Science Conference Proceedings (OSTI)

Rapidly increasing development and application areas of wireless sensor networks requires the deployment of highly scalable and dynamic communications paradigms for coping with the complex data management tasks encountered in distributed environments. ... Keywords: publish/subscribe messaging systems, wireless sensor networks

Hakan Cam; Ozgur Koray Sahingoz; Ahmet Coskun Sonmez

2011-05-01T23:59:59.000Z

75

Geographic convergecast using mobile sink in wireless sensor networks  

Science Conference Proceedings (OSTI)

This paper presents a novel convergecast algorithm called, Virtual Circle Combined Straight Routing (VCCSR), which collects data in a wireless sensor network (WSN) using a mobile sink. Tree-based routing offers the shortest routes to deliver data, and ... Keywords: Clustering, Convergecast, Data collection, Mobile sink, Wireless sensor networks

Tzung-Shi Chen; Hua-Wen Tsai; Yu-Hsin Chang; Tzung-Cheng Chen

2013-02-01T23:59:59.000Z

76

Health monitoring of civil infrastructures using wireless sensor networks  

Science Conference Proceedings (OSTI)

A Wireless Sensor Network (WSN) for Structural Health Monitoring (SHM) is designed, implemented, deployed and tested on the 4200ft long main span and the south tower of the Golden Gate Bridge (GGB). Ambient structural vibrations are reliably measured ... Keywords: deployment, large-scale, structural health monitoring, wireless sensor networks

Sukun Kim; Shamim Pakzad; David Culler; James Demmel; Gregory Fenves; Steven Glaser; Martin Turon

2007-04-01T23:59:59.000Z

77

Secure position verification for wireless sensor networks in noisy channels  

Science Conference Proceedings (OSTI)

Position verification in wireless sensor networks (WSNs) is quite tricky in presence of attackers (malicious sensor nodes), who try to break the verification protocol by reporting their incorrect positions (locations) during the verification stage. In ... Keywords: 3? limit, distance estimation, distributed protocol, location verification, quantiles, wireless networks

Partha Sarathi Mandal; Anil K. Ghosh

2011-07-01T23:59:59.000Z

78

Energy efficient searching in delay-tolerant wireless sensor networks  

Science Conference Proceedings (OSTI)

In this paper, we consider the problem of information discovery in densely deployed and delay-tolerant Wireless Sensor Network (WSN), where the initiator of search is unaware of the location of target information. We propose Increasing Ray Search (IRS), ... Keywords: energy efficiency, query, search, wireless sensor networks

Kiran Rachuri; A. Antony Franklin; C. Siva Ram Murthy

2008-05-01T23:59:59.000Z

79

Localized power-aware routing in linear wireless sensor networks  

Science Conference Proceedings (OSTI)

Energy-efficency is a key concern when designing protocols for wireless sensor networks (WSN). This is of particular importance in commercial applications where demonstrable return on investment is a crucial factor. One such commercial application that ... Keywords: energy efficiency, linear topology, localized protocol, routing, wireless sensor network

Marco Zimmerling; Waltenegus Dargie; Johnathan M. Reason

2008-05-01T23:59:59.000Z

80

Research on IPv6 address configuration for wireless sensor networks  

Science Conference Proceedings (OSTI)

The paper proposes an IPv6 address configuration scheme for wireless sensor networks. In the scheme, one wireless sensor network is divided into multiple clusters and the scheme creates the IPv6 address formats for the cluster heads and the cluster members ...

Xiaonan Wang; Demin Gao

2010-11-01T23:59:59.000Z

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


81

A Co-optimization Routing Algorithm in Wireless Sensor Network  

Science Conference Proceedings (OSTI)

The MACORA is presented to solve the collision between mobile agent and multicast suppression in channel competitive process. With two-layer graph model, the channel converter problem in the dual-channel wireless sensor networks can be simplified into ... Keywords: Co-optimization, Dual-channel, Mobile agent, Packet transmission, The optimal route Restoring, Wireless sensor networks

Ran Jin, Chunhai Kou, Ruijuan Liu, Yefeng Li

2013-06-01T23:59:59.000Z

82

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

Science Conference Proceedings (OSTI)

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

Chun-Hsien Wu; Yeh-Ching Chung

2007-05-01T23:59:59.000Z

83

ESF: an efficient security framework for wireless sensor network  

Science Conference Proceedings (OSTI)

A wireless sensor network WSN consists of a large number of resource constrained sensor nodes, usually deployed in hostile environments, where they face a variety of malicious attacks. To address the security vulnerabilities in WSN, this paper proposes ...

Somanath Tripathy

2013-02-01T23:59:59.000Z

84

Probabilistic data collection protocols for energy harvesting wireless sensor networks  

Science Conference Proceedings (OSTI)

Energy harvesting from ambient energy sources including solar and vibration has been studied as a candidate for powering next generation wireless sensor networks. However, energy harvesting is unstable to supply a sensor node with energy, and a node ...

Masaya Yoshida; Tomoya Kitani; Masaki Bandai; Takashi Watanabe; Pai H. Chou; Winston K. G. Seah

2012-11-01T23:59:59.000Z

85

Optimized query routing trees for wireless sensor networks  

Science Conference Proceedings (OSTI)

In order to process continuous queries over Wireless Sensor Networks (WSNs), sensors are typically organized in a Query Routing Tree (denoted as T) that provides each sensor with a path over which query results can be transmitted to the querying node. ... Keywords: Critical path method, Query routing trees, Sensor networks

Panayiotis Andreou; Demetrios Zeinalipour-Yazti; Andreas Pamboris; Panos K. Chrysanthis; George Samaras

2011-04-01T23:59:59.000Z

86

Task-oriented Distributed Information Fusion in Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

A wireless sensor network may form a part of the base for cloud computing through Internet. We present a framework of task-oriented distributed data fusion, and investigate the assignments of heterogeneous sensors on nodes in the network for a specified ... Keywords: Distributed Decision Making, Linguistic Decision Trees, Network Hierarchy, Optimal sensor assignments

Hongmei He; Zhenhuan Zhu; Erkki Makinen

2012-08-01T23:59:59.000Z

87

A taxonomy of wireless micro-sensor network models  

Science Conference Proceedings (OSTI)

In future smart environments, wireless sensor networks will play a key role in sensing, collecting, and disseminating information about environmental phenomena. Sensing applications represent a new paradigm for network operation, one that has different ...

Sameer Tilak; Nael B. Abu-Ghazaleh; Wendi Heinzelman

2002-04-01T23:59:59.000Z

88

A study of reconnecting the partitioned wireless sensor networks  

Science Conference Proceedings (OSTI)

Most wireless sensor networks (WSN) researches assume that the network is connected and there is always a path connected by wireless links between a source and a destination. In this paper, we argue that network partitioning is not an uncommon phenomenon ...

Qing Ye; Liang Cheng

2005-04-01T23:59:59.000Z

89

Dynamic mobile agent migration in Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

Computing paradigm plays an important and fundamental role in collaborative processing in Wireless Sensor Networks (WSN). The client/server based paradigm and the mobile agent based paradigm are two popular computing models used to facilitate ... Keywords: WSN, ad hoc computing, ad hoc networks, agent-based systems, client-server computing, collaborative processing, computing paradigms, mobile agent computing, mobile agent itinerary, mobile agents, multi-agent systems, pervasive computing, sensor networks, simulation, ubiquitous computing, wireless networks

Yingyue Xu; Hairong Qi

2006-12-01T23:59:59.000Z

90

HUSEC: A heuristic self configuration model for wireless sensor networks  

Science Conference Proceedings (OSTI)

The Network State Beacons (NSB) exchange rate is the critical parameter in monitoring the dynamic state of any self-configuring ad hoc sensor network. Along with the network state and the overhead control traffic, it determines both the time and nature ... Keywords: Beacon exchange rate, Self-configuration, Wireless ad hoc sensor networks

Mudasser Iqbal; Iqbal Gondal; Laurence S. Dooley

2007-05-01T23:59:59.000Z

91

An energy efficient clustering protocol for routing in Wireless Sensor Network  

Science Conference Proceedings (OSTI)

In Wireless Sensor Network (WSN), the power supply is generally a non-renewable battery, consequently, energy effectiveness is a crucial factor. To maximise the battery life and therefore the duration of network service, a robust wireless ... Keywords: WSNs, battery life, dynamic clustering, energy efficiency, energy efficient clustering, network lifetime, simulation, wireless communications, wireless networks, wireless sensor networks

Ouadoudi Zytoune; Mohamed El Aroussi; Driss Aboutajdine

2011-12-01T23:59:59.000Z

92

Latency of wireless sensor networks with uncoordinated power saving mechanisms  

Science Conference Proceedings (OSTI)

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

Olivier Dousse; Petteri Mannersalo; Patrick Thiran

2004-05-01T23:59:59.000Z

93

Comparative performance study of ADMR and ODMRP in the context of wireless LANs and wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless LANs (WLANs) and Wireless Sensor Networks (WSNs) are two large groups of networks that have well established application ranges. Despite the fact that they address very distinctive groups of devices and have clearly differentiated wireless interfaces, ... Keywords: medium access control mechanisms, performance evaluation, wireless LANs, wireless sensor networks

Radosveta Sokullu; Ozlem Karaca

2008-05-01T23:59:59.000Z

94

Advanced MAC protocol with energy-efficiency for wireless sensor networks  

Science Conference Proceedings (OSTI)

This paper proposes E2-MAC, a contention-based energy-efficient Medium Access Control (MAC) Protocol for wireless sensor networks. Energy efficiency is primary goal in wireless sensor networks. Existing MAC protocols for sensor networks attempt ...

Jae-Hyun Kim; Ho-Nyeon Kim; Seog-Gyu Kim; Seung-Jun Choi; Jai-Yong Lee

2005-01-01T23:59:59.000Z

95

Improving broadcast efficiency in wireless sensor network time synchronization protocols  

Science Conference Proceedings (OSTI)

In this work we proposed an algorithm to allow nodes in a wireless sensor network to interconnect in a way such that time stamp information can be efficiently distributed for network wide synchronization. The algorithm works by first establishing a level ... Keywords: broadcast optimization, sensor networks, time synchronization

Wenxun Huang; Yujuan Quan; Deming Chen

2012-06-01T23:59:59.000Z

96

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

Science Conference Proceedings (OSTI)

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

Kemal Akkaya; Fatih Senel; Brian McLaughlan

2009-06-01T23:59:59.000Z

97

Knowledge-based duty cycle estimation in wireless sensor networks: Application for sound pressure monitoring  

Science Conference Proceedings (OSTI)

Wireless sensor networks comprise an important research area and a near future for industry and communications. Wireless sensor networks contain resource-constrained sensor nodes that are powered by small batteries, limited process and memory and wireless ... Keywords: Constrained device, Fuzzy rule based system, Multi-agent system, Sound pressure, Wireless sensor network

J. C. Cuevas-Martinez; J. Canada-Bago; J. A. Fernandez-Prieto; M. A. Gadeo-Martos

2013-02-01T23:59:59.000Z

98

Mobility-assisted minimum connected cover in a wireless sensor network  

Science Conference Proceedings (OSTI)

All properties of mobile wireless sensor networks (MWSNs) are inherited from static wireless sensor networks (WSNs) and meanwhile have their own uniqueness and node mobility. Sensor nodes in these networks monitor different regions of an area of interest ... Keywords: Energy-aware selection method, Minimum connected sensor cover set, Mobile wireless sensor networks, Redundant node, Relocation

Ahmed M. Khedr; Walid Osamy

2012-07-01T23:59:59.000Z

99

Wireless sensor network system for supporting nursing context-awareness  

Science Conference Proceedings (OSTI)

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

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

2011-11-01T23:59:59.000Z

100

Typhoon: a reliable data dissemination protocol for wireless sensor networks  

Science Conference Proceedings (OSTI)

We present Typhoon, a protocol designed to reliably deliver large objects to all the nodes of a wireless sensor network (WSN). Typhoon uses a combination of spatially-tuned timers, prompt retransmissions, and frequency diversity to reduce contention ...

Chieh-Jan Mike Liang; R?zvan Mus?loiu-E.; Andreas Terzis

2008-01-01T23:59:59.000Z

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


101

Smarter cities through standards-based wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks (WSNs) started as an academic concept and became a commercially relevant technology. This technology will play a key role in creating more instrumented and interconnected urban environments. The resulting smarter cities will ...

T. Watteyne; K. S. J. Pister

2011-01-01T23:59:59.000Z

102

Cooperative game-based routing approach for wireless sensor network  

Science Conference Proceedings (OSTI)

Aiming at the security and limited energy issues in wireless sensor network, this paper introduces a secure and energy-saving routing protocol based on cooperative game strategy. A novel incentive mechanism is proposed: all the nodes including the selfish ...

Fengyun Li; Guiran Chang; Lan Yao; Fuxiang Gao

2012-08-01T23:59:59.000Z

103

Quality-Driven Volcanic Earthquake Detection Using Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

Volcano monitoring is of great interest to public safety and scientific explorations. However, traditional volcanic instrumentation such as broadband seismometers are expensive, power-hungry, bulky, and difficult to install. Wireless sensor networks ...

Rui Tan; Guoliang Xing; Jinzhu Chen; Wen-Zhan Song; Renjie Huang

2010-11-01T23:59:59.000Z

104

Wireless sensor networks for structural and environmental monitoring  

Science Conference Proceedings (OSTI)

The article discusses various applications of Wireless Sensor Networks (WNS) in environment and civil engineering constructions monitoring with a particular emphasis on the evaluation of the influence of individual node failures on the operation of the ...

Igor Dunajewski

2008-01-01T23:59:59.000Z

105

ROPE: robust position estimation in wireless sensor networks  

Science Conference Proceedings (OSTI)

We address the problem of secure location determination, known as Secure Localization, and the problem of verifying the location claim of a node, known as Location Verification, in Wireless Sensor Networks (WSN). We propose a robust positioning ...

Loukas Lazos; Radha Poovendran; Srdjan ?apkun

2005-04-01T23:59:59.000Z

106

Towards clock skew based services in wireless sensor networks  

Science Conference Proceedings (OSTI)

Clock skew, an inherent property of clock crystals of physical devices, is defined as the rate of deviation of a device clock from the true time. The frequency of a device's clock actually depends on its environment, such as the temperature, humidity, ... Keywords: Sybil attacks, attack detection, clock crystals, clock skews, covert channels, electromagnetic interference, fingerprinting, geolocation, humidity, malfunctioning mote identification, malicious mote identification, measurement, multi-hop WSN, node identification, security, sensor motes, temperature, vibration, wireless networks, wireless sensor networks, wormhole attacks

Md. Borhan Uddin; Claude Castelluccia

2011-12-01T23:59:59.000Z

107

Tight analysis of shortest path convergecast in wireless sensor networks  

Science Conference Proceedings (OSTI)

We consider the convergecast problem in wireless sensor networks where readings generated by each sensor node are to reach the sink. Since a sensor reading can usually be encoded in a few bytes, more than one reading can readily fit into a standard transmission ...

John Augustine, Qi Han, Philip Loden, Sachin Lodha, Sasanka Roy

2011-01-01T23:59:59.000Z

108

Low-cost group rekeying for unattended wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks (WSNs) are made up of large groups of nodes that perform distributed monitoring services. Since sensor measurements are often sensitive data acquired in hostile environments, securing WSN becomes mandatory. However, WSNs consists ... Keywords: GKM, Rekeying, Security, Sensors, WSN

Juan Hernández-Serrano; Juan Vera-Del-Campo; Josep Pegueroles; Carlos Gañán

2013-01-01T23:59:59.000Z

109

A new clustering scheme for wireless sensor networks  

Science Conference Proceedings (OSTI)

Energy consumption has always been the most serious issue to consider while deploying Wireless Sensor Networks (WSNs). Sensor nodes are limited in power, computational capacities and memory so reporting the occurring of specific events, such as fire ... Keywords: Opnet simulator, PMM, WSNs, cluster, event, mobile sink, sensor node model

Hajar Mousannif; Said Rakrak; Hassan Al Moatassime

2010-11-01T23:59:59.000Z

110

IDEA: integrated distributed energy awareness for wireless sensor networks  

Science Conference Proceedings (OSTI)

Energy in sensor networks is a distributed, non-transferable resource. Over time, differences in energy availability are likely to arise. Protocols like routing trees may concentrate energy usage at certain nodes. Differences in energy harvesting arising ... Keywords: optimization, resource distribution, resource management, wireless sensor networks

Geoffrey Werner Challen; Jason Waterman; Matt Welsh

2010-06-01T23:59:59.000Z

111

Prius: generic hybrid trace compression for wireless sensor networks  

Science Conference Proceedings (OSTI)

Several diagnostic tracing techniques (e.g., event, power, and control-flow tracing) have been proposed for run-time debugging and postmortem analysis of wireless sensor networks (WSNs). Traces generated by such techniques can become large, defying the ... Keywords: compression, sensor networks, tracing

Vinaitheerthan Sundaram; Patrick Eugster; Xiangyu Zhang

2012-11-01T23:59:59.000Z

112

Intrusion detection of sinkhole attacks in wireless sensor networks  

Science Conference Proceedings (OSTI)

In this paper, we present an Intrusion Detection System designed for wireless sensor networks and show how it can be configured to detect Sinkhole attacks. A Sinkhole attack forms a serious threat to sensor networks. We study in depth this attack by ...

Ioannis Krontiris; Tassos Dimitriou; Thanassis Giannetsos; Marios Mpasoukos

2007-07-01T23:59:59.000Z

113

A wireless sensor network For structural monitoring  

Science Conference Proceedings (OSTI)

Structural monitoring---the collection and analysis of structural response to ambient or forced excitation--is an important application of networked embedded sensing with significant commercial potential. The first generation of sensor networks for structural ... Keywords: Wisden, sensor network, structural health monitoring

Ning Xu; Sumit Rangwala; Krishna Kant Chintalapudi; Deepak Ganesan; Alan Broad; Ramesh Govindan; Deborah Estrin

2004-11-01T23:59:59.000Z

114

Solar-aware Routing in Wireless Sensor Networks  

E-Print Network (OSTI)

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

115

Wireless Sensors and Networks for Advanced Energy Management  

SciTech Connect

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

Hardy, J.E.

2005-05-06T23:59:59.000Z

116

Integrated topology control and routing in wireless sensor networks for prolonged network lifetime  

Science Conference Proceedings (OSTI)

This study considers an integrated topology control and routing problem in wireless sensor networks (WSNs), which are employed to gather data via use of sensors with limited energy resources. We employ a hierarchical topology and routing structure with ... Keywords: Algorithms, Data gathering, Network design models, Wireless sensor networks

Halit íster; Hui Lin

2011-07-01T23:59:59.000Z

117

Deploying a wireless sensor network on an active volcano  

E-Print Network (OSTI)

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

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

2006-01-01T23:59:59.000Z

118

Routing Security Issues in Wireless Sensor Networks: Attacks and Defenses  

E-Print Network (OSTI)

Wireless Sensor Networks (WSNs) are rapidly emerging as an important new area in wireless and mobile computing research. Applications of WSNs are numerous and growing, and range from indoor deployment scenarios in the home and office to outdoor deployment scenarios in adversary's territory in a tactical battleground (Akyildiz et al., 2002). For military environment, dispersal of WSNs into an adversary's territory enables the detection and tracking of enemy soldiers and vehicles. For home/office environments, indoor sensor networks offer the ability to monitor the health of the elderly and to detect intruders via a wireless home security system. In each of these scenarios, lives and livelihoods may depend on the timeliness and correctness of the sensor data obtained from dispersed sensor nodes. As a result, such WSNs must be secured to prevent an intruder from obstructing the delivery of correct sensor data and from forging sensor data. To address the latter problem, end-to-end data integrity checksums and pos...

Sen, Jaydip

2011-01-01T23:59:59.000Z

119

FEMP Technology Brief: Wireless Sensor Networks for Data Centers |  

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

Wireless Sensor Networks for Data Centers Wireless Sensor Networks for Data Centers FEMP Technology Brief: Wireless Sensor Networks for Data Centers October 7, 2013 - 9:15am Addthis The geometrical arrangement of your server rack in a data center to optimize heat removal can dramatically lower cooling and fan power needs. Server rack configuration in the Data Center at the National Renewable Energy Laboratory (NREL) Research Support Facility. Photo credit: NREL PIX 18784 The waste heat emitted from institutional data center servers can be removed more efficiently when design considerations are evaluated and innovative monitoring sensor networks are installed for verification and measurement. Hot aisle containment system in the Data Center at the NREL Research Support Facility. Photo credit: NREL PIX 18780

120

FEMP Technology Brief: Wireless Sensor Networks for Data Centers |  

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

FEMP Technology Brief: Wireless Sensor Networks for Data Centers FEMP Technology Brief: Wireless Sensor Networks for Data Centers FEMP Technology Brief: Wireless Sensor Networks for Data Centers October 7, 2013 - 9:15am Addthis The geometrical arrangement of your server rack in a data center to optimize heat removal can dramatically lower cooling and fan power needs. Server rack configuration in the Data Center at the National Renewable Energy Laboratory (NREL) Research Support Facility. Photo credit: NREL PIX 18784 The waste heat emitted from institutional data center servers can be removed more efficiently when design considerations are evaluated and innovative monitoring sensor networks are installed for verification and measurement. Hot aisle containment system in the Data Center at the NREL Research Support Facility. Photo

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


121

An efficient cluster-based self-organisation algorithm for wireless sensor networks  

Science Conference Proceedings (OSTI)

The paper proposes an Efficient Cluster-based Self-organisation Algorithm (ECSA) for partitioning Wireless Sensor Networks (WSNs) into clusters, thus giving at the network a hierarchical organisation. Each sensor uses its weight ... Keywords: WSNs, cluster head, clustering algorithms, energy dissipation, homogeneous clusters, k-density, network lifetime, node weight, residual energy, self-organisation, wireless networks, wireless sensor networks

Mohamed Lehsaini; Herve Guyennet; Mohammed Feham

2010-02-01T23:59:59.000Z

122

Fault tolerance in ZigBee wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks (WSN) based on the IEEE 802.15.4 Personal Area Network standard are finding increasing use in the home automation and emerging smart energy markets. The network and application layers, based on the ZigBee 2007 PRO Standard, provide ...

Richard Alena; Ray Gilstrap; Jarren Baldwin; Thom Stone; Pete Wilson

2011-03-01T23:59:59.000Z

123

Lossy Data Aggregation in Multihop Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

In wireless sensor networks, in-network data aggregation is an efficient way to reduce energy consumption in network. However, most of the existing data aggregation scheduling methods try to aggregate the data from all the nodes at all time-instances. ... Keywords: Data Loss, Data Sampling, Energy Efficiency, Lossy Data Aggregation

Guojun Dai; Jianhui Zhang; Shaojie Tang; Xingfa Shen; Changping Lv

2009-12-01T23:59:59.000Z

124

Solar Energy Harvesting for Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

The commercially available sensor nodes are battery-driven devices. A number of nodes together constitute a network. As days proceed, the batteries used in the nodes lose their charge and subsequently get isolated from the network. Many energy harvesting ... Keywords: Energy Harvest, Recharging Circuitry, Batteries, Low Power Design, MICAz sensor nodes

P. T. V. Bhuvaneswari; R. Balakumar; V. Vaidehi; P. Balamuralidhar

2009-07-01T23:59:59.000Z

125

Wearable wireless sensor network for the monitorisation of Parkinsonian patients using a novel mobility algorithm  

Science Conference Proceedings (OSTI)

Recent advances in the field of wireless sensor networks (WSN) include the creation of a new kind of these networks, called body sensor networks (BSN). These systems have been proven to be an enabling technology for the application domain ... Keywords: Parkinson', bioinformatics, body sensor networks, force sensors, gait analysis, healthcare technology, medical monitoring, monitorisation, network mobility, patient gaits, s disease, wearable WSNs, wearable computing, wireless networks, wireless sensor networks

Gonzalo Solas; Paul Bustamante; Karol Grandez; Erlantz Uriarte

2009-12-01T23:59:59.000Z

126

Minimalist object oriented service discovery protocol for wireless sensor networks  

Science Conference Proceedings (OSTI)

This paper presents a new Service Discovery Protocol (SDP) suitable for Wireless Sensor Networks (WSN). The restrictions that are imposed by ultra low-cost sensor and actuators devices (basic components of a WSN) are taken into account to reach a minimal ...

D. Villa; F. J. Villanueva; F. Moya; F. Rincón; J. Barba; J. C. López

2007-05-01T23:59:59.000Z

127

A biologically-inspired clustering protocol for wireless sensor networks  

Science Conference Proceedings (OSTI)

Lately, wireless sensor networks are garnering a lot of interests, as it is feasible to deploy them in many ad hoc scenarios such as for earthquake monitoring, tsunami monitoring and battlefield surveillance. As sensor nodes may be deployed in hostile ... Keywords: Biologically-inspired, Clustering, Meta-heuristic, Routing, Simulations

S. Selvakennedy; S. Sinnappan; Yi Shang

2007-10-01T23:59:59.000Z

128

SWATS: Wireless sensor networks for steamflood and waterflood pipeline monitoring  

Science Conference Proceedings (OSTI)

State-of-the-art anomaly detection systems deployed in oilfields are expensive, not scalable to a large number of sensors, require manual operation, and provide data with a long delay. To overcome these problems, we design a wireless sensor network system ...

Sunhee Yoon; Wei Ye; J. Heidemann; B. Littlefield; C. Shahabi

2011-01-01T23:59:59.000Z

129

ATPC: adaptive transmission power control for wireless sensor networks  

Science Conference Proceedings (OSTI)

Extensive empirical studies presented in this paper confirm that the quality of radio communication between low power sensor devices varies significantly with time and environment. This phenomenon indicates that the previous topology control solutions, ... Keywords: adaptive, feedback, link quality, transmission power control, wireless sensor network

Shan Lin; Jingbin Zhang; Gang Zhou; Lin Gu; John A. Stankovic; Tian He

2006-10-01T23:59:59.000Z

130

Time Synchronization in Hierarchical TESLA Wireless Sensor Networks  

SciTech Connect

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

Jason L. Wright; Milos Manic

2009-08-01T23:59:59.000Z

131

Wireless Sensor Network for Improving the Energy Efficiency of...  

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

032012 Publisher Lawrence Berkeley National Laboratory City Berkeley Keywords data center, energy efficiency, energy efficiency of data, Wireless sensor, Wireless sensor...

132

Transmitting and gathering streaming data in wireless multimedia sensor networks within expected network lifetime  

Science Conference Proceedings (OSTI)

Using multimedia sensor nodes in wireless sensor networks (WSNs) can significantly enhance the capability of WSNs for event description. Different kinds of holes can easily appear in WSNs. How to efficiently transmit multi-media streaming data and bypass ... Keywords: cross layer design, geographical multipath routing, wireless multimedia sensor networks

Lei Shu; Yan Zhang; Zhangbing Zhou; Manfred Hauswirth; Zhiwen Yu; Gearoid Hynes

2008-08-01T23:59:59.000Z

133

Complete Security Framework for Wireless Sensor Networks  

E-Print Network (OSTI)

Security concern for a Sensor Networks and level of security desired may differ according to application specific needs where the sensor networks are deployed. Till now, most of the security solutions proposed for sensor networks are layer wise i.e a particular solution is applicable to single layer itself. So, to integrate them all is a new research challenge. In this paper we took up the challenge and have proposed an integrated comprehensive security framework that will provide security services for all services of sensor network. We have added one extra component i.e. Intelligent Security Agent (ISA) to assess level of security and cross layer interactions. This framework has many components like Intrusion Detection System, Trust Framework, Key Management scheme and Link layer communication protocol. We have also tested it on three different application scenarios in Castalia and Omnet++ simulator.

Sharma, Kalpana; Kuldeep,

2009-01-01T23:59:59.000Z

134

Making sensor networks immortal: an energy-renewal approach with wireless power transfer  

Science Conference Proceedings (OSTI)

Wireless sensor networks are constrained by limited battery energy. Thus, finite network lifetime is widely regarded as a fundamental performance bottleneck. Recent breakthrough in the area of wireless power transfer offers the potential of removing ... Keywords: lifetime, optimization, wireless power transfer, wireless sensor network (WSN)

Liguang Xie; Yi Shi; Y. Thomas Hou; Hanif D. Sherali

2012-12-01T23:59:59.000Z

135

Distributed Energy-Efficient Hierarchical Clustering for Wireless Sensor Networks  

E-Print Network (OSTI)

Distributed Energy-Efficient Hierarchical Clustering for Wireless Sensor Networks Ping Ding, Jo important. In this paper, we propose a distributed weight-based energy-efficient hierarchical clustering of the network topology. Younis and Fahmy [4] propose a Hybrid Energy-Efficient Distributed clustering (HEED

Holliday, JoAnne

136

A dynamic reconfigurable routing framework for wireless sensor networks  

Science Conference Proceedings (OSTI)

Sensornet deployments of the future are expected to deliver a multitude of services, ranging from reliable sensing, real time streams, mission critical support, network reprogramming and so on. Naturally, no one routing protocol can sufficiently cater ... Keywords: Dynamic routing, Multi-hop routing, Wireless sensor networks

Mukundan Venkataraman; Mainak Chatterjee; Kevin Kwiat

2011-09-01T23:59:59.000Z

137

Modeling overall energy consumption in Wireless Sensor Networks  

E-Print Network (OSTI)

Minimizing the energy consumption of a wireless sensor network application is crucial for effective realization of the intended application in terms of cost, lifetime, and functionality. However, the minimizing task is hardly possible as no overall energy cost function is available for optimization. Optimizing a specific component of the total energy cost does not help in reducing the total energy cost as this reduction may be negated by an increase in the energy consumption of other components of the application. Recently we proposed Hierarchy Energy Driven Architecture as a robust architecture that takes into account all principal energy constituents of wireless sensor network applications. Based on the proposed architecture, this paper presents a single overall model and proposes a feasible formulation to express the overall energy consumption of a generic wireless sensor network application in terms of its energy constituents. The formulation offers a concrete expression for evaluating the performance of ...

Kamyabpour, Najmeh

2011-01-01T23:59:59.000Z

138

IDRA: A flexible system architecture for next generation wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks consist of embedded devices (sensor nodes), equipped with a low-power radio. They are used for many applications: from wireless building automation to e-health applications. However, due to the limited capabilities of sensor ... Keywords: Architecture, Energy efficiency, Experimental evaluation, Heterogeneity, Mobility, Protocol selection, QoS, Wireless sensor networks

Eli De Poorter; Evy Troubleyn; Ingrid Moerman; Piet Demeester

2011-08-01T23:59:59.000Z

139

PowerTOSSIM z: realistic energy modelling for wireless sensor network environments  

Science Conference Proceedings (OSTI)

Energy continues to be the key constraint in wireless sensor networks. We review existing methods for estimating software power consumption and battery modelling, as applied to embedded systems such as Wireless Sensor Networks. We consider current developments ... Keywords: MICAz, PowerTOSSIM, TOSSIM, TinyOS 2, energy model, non-linear battery model, wireless sensor networks

Enrico Perla; Art Ó Catháin; Ricardo Simon Carbajo; Meriel Huggard; Ciarán Mc Goldrick

2008-10-01T23:59:59.000Z

140

Quantifying the channel quality for interference-aware wireless sensor networks  

Science Conference Proceedings (OSTI)

Reliability of communications is key to expand application domains for sensor networks. Since Wireless Sensor Networks (WSN) operate in the license-free Industrial Scientific and Medical (ISM) bands and hence share the spectrum with other wireless technologies, ... Keywords: ISM bands, channel quality, dynamic resource adaptation, interference, wireless sensor networks

Claro Noda; Shashi Prabh; Mário Alves; Carlo Alberto Boano; Thiemo Voigt

2011-12-01T23:59:59.000Z

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


141

Using ant-based agents for congestion control in ad-hoc wireless sensor networks  

Science Conference Proceedings (OSTI)

Ad-hoc wireless sensor networks suffer from problems of congestion, which lead to packet loss and excessive energy consumption. In this paper, we address the issue of congestion in these networks. We propose a new routing protocol for wireless sensor ... Keywords: Ad hoc wireless sensor networks, Ant-based agents, Congestion control, Routing

Sanjay K. Dhurandher; Sudip Misra; Harsh Mittal; Anubhav Agarwal; Isaac Woungang

2011-03-01T23:59:59.000Z

142

ERTP: Energy-efficient and Reliable Transport Protocol for data streaming in Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

Emerging data streaming applications in Wireless Sensor Networks require reliable and energy-efficient Transport Protocols. Our recent Wireless Sensor Network deployment in the Burdekin delta, Australia, for water monitoring [T. Le Dinh, W. Hu, P. Sikka, ... Keywords: Energy-efficiency, Reliability, Transport protocol, Wireless Sensor Network

Tuan Le; Wen Hu; Peter Corke; Sanjay Jha

2009-05-01T23:59:59.000Z

143

Study of joint routing and wireless charging strategies in sensor networks  

Science Conference Proceedings (OSTI)

In recent years, wireless charging (a.k.a. wireless energy transferring) [3] has been recognized as a promising alternative to address the energy constraint challenge in wireless sensor networks. Comparing to the conventional energy conservation or harvesting ...

Zi Li; Yang Peng; Wensheng Zhang; Daji Qiao

2010-08-01T23:59:59.000Z

144

A power- and coverage-aware clustering scheme for wireless sensor networks  

Science Conference Proceedings (OSTI)

A common and critical operation for wireless sensor networks is data gathering. The efficient clustering of a sensor network that can save energy and improve coverage efficiency is an important requirement for many upper layer network functions. This ... Keywords: Wireless sensor networks, clustering, energy and coverage efficiency, high-uniformity, network lifetime

Liang Xue; Xin-Ping Guan; Zhi-Xin Liu; Qing-Chao Zheng

2010-11-01T23:59:59.000Z

145

Maximizing network lifetime based on transmission range adjustment in wireless sensor networks  

Science Conference Proceedings (OSTI)

In a wireless sensor network (WSN), the unbalanced distribution of communication loads often causes the problem of energy hole, which means the energy of the nodes in the hole region will be exhausted sooner than the nodes in other regions. This is a ... Keywords: Energy hole problem, Multi-objective optimization problem, NP hard, Wireless sensor networks

Chao Song; Ming Liu; Jiannong Cao; Yuan Zheng; Haigang Gong; Guihai Chen

2009-07-01T23:59:59.000Z

146

TCPL: A Defense against wormhole attacks in wireless sensor networks  

Science Conference Proceedings (OSTI)

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

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

2010-10-26T23:59:59.000Z

147

Low power wireless sensor networks in industrial environment  

Science Conference Proceedings (OSTI)

The current situation in Spanish municipal solid waste is a reason of concern for the society because the consumption habits of modern consumer lifestyles are causing a huge waste problem. Last investigations show generation of polluting emissions, not ... Keywords: MicaZ, heliomote, landfill monitoring, solid waste emissions, wireless sensor networks

Roberto Fernández-Martínez; J. Ordieres; A. Gonzalez-Marcos

2008-07-01T23:59:59.000Z

148

Energy Balancing Intrusion Detection System in Wireless Sensor Network  

Science Conference Proceedings (OSTI)

wireless sensor network (WSN) is vulnerable to a wide range of attacks due to deployment in the hostile ervironment and having limited resources. The security of WSN becomes a very important issue with the rapid development of WSN. Instrusion detection ... Keywords: WSN, Energy-effiency, Clustering, IDS

Chunyan Peng; Bing Liu

2012-10-01T23:59:59.000Z

149

Hierarchical-Battery Aware Routing in Wireless Sensor Networks  

E-Print Network (OSTI)

Hierarchical-Battery Aware Routing in Wireless Sensor Networks Ravi Musunuri Jorge A. Cobb monitoring applications. Pulsed battery discharge from the nodes prolongs the battery capacity as compared to constant discharge. Idle time between the pulses of discharge helps in recovering the discharged battery

Cobb, Jorge Arturo

150

A case for centrally controlled wireless sensor networks  

Science Conference Proceedings (OSTI)

In this article we present the Intelligent, Manageable, Power-Efficient and Reliable Internetworking Architecture (IMPERIA), a centrally managed architecture for large-scale wireless sensor networks (WSNs). We discuss the advantages of a centralized ... Keywords: Centrally managed, Clustering, MQTT-S, Scheduling, WSN

Urs Hunkeler, Clemens Lombriser, Hong Linh Truong, Beat Weiss

2013-04-01T23:59:59.000Z

151

Protecting the sink location privacy in wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks (WSNs) are widely deployed to collect data in military and civilian applications today. Due to the open nature of a WSN, it is relatively easy for an adversary to eavesdrop and trace packets in order to capture the receiver. ... Keywords: Location privacy, Receiver, Sink, WSN

Lin Yao, Lin Kang, Pengfei Shang, Guowei Wu

2013-06-01T23:59:59.000Z

152

Underground Coal Mine Monitoring with Wireless Sensor Networks  

E-Print Network (OSTI)

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

Liu, Yunhao

153

Short-Term Solar Energy Forecasting Using Wireless Sensor Networks  

E-Print Network (OSTI)

Short-Term Solar Energy Forecasting Using Wireless Sensor Networks Stefan Achleitner, Tao Liu in power output is a major concern and forecasting is, therefore, a top priority. We propose a sensing infrastructure to enable sensing of solar irradiance with application to solar array output forecasting

Cerpa, Alberto E.

154

Decentralized control of adaptive sampling in wireless sensor networks  

Science Conference Proceedings (OSTI)

The efficient allocation of the limited energy resources of a wireless sensor network in a way that maximizes the information value of the data collected is a significant research challenge. Within this context, this article concentrates on adaptive ... Keywords: Adaptive sampling algorithm, Gaussian process regression, decentralized decision mechanism, information metric

Johnsen Kho; Alex Rogers; Nicholas R. Jennings

2009-05-01T23:59:59.000Z

155

Experimental analysis and characterization of a wireless sensor network environment  

Science Conference Proceedings (OSTI)

Existing testbeds, even though rare and specialized, are not often exploited to their full potential. Data collected during experimentation are usually used to evaluate some specific tested aspect. To further benefit from the knowledge gathered on a ... Keywords: characterization, statistical analysis, testbeds, wireless sensor networks

Bogdan Pavkovic; Fabrice Theoleyre; Dominique Barthel; Andrzej Duda

2010-10-01T23:59:59.000Z

156

Combinatorial structures for design of wireless sensor networks  

Science Conference Proceedings (OSTI)

Combinatorial designs are very effective tools for managing keys in an infrastructure where power and memory are two major constraints. None of the present day wireless technologies takes the advantage of combinatorial designs. In this paper, we have ... Keywords: combinatorial design, key predistribution, projective plane, sensor network, transversal design

Dibyendu Chakrabarti; Jennifer Seberry

2006-06-01T23:59:59.000Z

157

Prolonging the lifetime of wireless sensor networks using multi-level clustering and heterogeneity  

Science Conference Proceedings (OSTI)

Clustering in wireless sensor networks (WSNs) is an important technique to prolong lifetime of a WSN. This paper proposes energy efficient multi-level clustering scheme called Power Aware Multi-level Clustering (PAMC) for homogeneous wireless sensor ... Keywords: algorithm, energy efficiency, heterogeneity, multi-level clustering, wireless sensor networks

Surender Soni; Vivek Katiyar

2011-02-01T23:59:59.000Z

158

A learning automata based scheduling solution to the dynamic point coverage problem in wireless sensor networks  

Science Conference Proceedings (OSTI)

The dynamic point coverage problem in wireless sensor networks is to detect some moving target points in the area of the network using as few sensor nodes as possible. One way to deal with this problem is to schedule sensor nodes in such a way that a ... Keywords: Dynamic point coverage, Learning automata, Scheduling, Wireless sensor network

M. Esnaashari; M. R. Meybodi

2010-10-01T23:59:59.000Z

159

EECHE: energy-efficient cluster head election protocol for heterogeneous wireless sensor networks  

Science Conference Proceedings (OSTI)

A wireless sensor network with a large number of tiny sensor nodes can be used as an effective tool for gathering data in various situations. One of the major issues in wireless sensor network is developing an energy-efficient routing protocol which ... Keywords: clustering, energy efficient, heterogeneous, lifetime, sensor networks

Dilip Kumar; T. C. Aseri; R. B Patel

2009-01-01T23:59:59.000Z

160

An energy-efficient, transport-controlled MAC protocol for wireless sensor networks  

Science Conference Proceedings (OSTI)

In wireless sensor networks (WSNs), one major cause of wasted energy is that the wireless network interface is always on to accept possible traffic. Many medium access control (MAC) protocols therefore adopted a periodic listen-and-sleep scheme to save ... Keywords: Congestion control, Medium access control, Transport control, Wireless sensor network

Jaesub Kim; Kyu Ho Park

2009-07-01T23:59:59.000Z

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


161

NetTopo: A framework of simulation and visualization for wireless sensor networks  

Science Conference Proceedings (OSTI)

Network simulators are necessary for testing algorithms of large scale wireless sensor networks (WSNs), but lack the accuracy of real-world deployments. Deploying real WSN testbed provides a more realistic test environment, and allows users to get more ... Keywords: NetTopo, Research framework, Simulation, Visualization, Wireless sensor networks, Wireless testbed

Lei Shu; Manfred Hauswirth; Han-Chieh Chao; Min Chen; Yan Zhang

2011-07-01T23:59:59.000Z

162

Increasing network lifetime in an energy-constrained wireless sensor network  

Science Conference Proceedings (OSTI)

Energy in wireless sensor networks is a scarce resource, therefore an energy-efficient mechanism is required to increase the network lifetime. In this paper, we study the problem of optimal power allocation, taking into account the estimation of the ...

Said El Abdellaoui; Mérouane Debbah; Youssef Fakhri; Driss Aboutajdine

2013-03-01T23:59:59.000Z

163

Towards robustness and energy efficiency of cut detection in wireless sensor networks  

Science Conference Proceedings (OSTI)

Reliable, full network connectivity in wireless sensor networks (WSN) is difficult to maintain. Awareness of the state of network connectivity is similarly challenging. Harsh, unattended, low-security environments and resource-constrained nodes exacerbate ... Keywords: Network cut detection, Topology control, Wireless sensor networks

Myounggyu Won; Stephen M. George; Radu Stoleru

2011-05-01T23:59:59.000Z

164

SeRLoc: secure range-independent localization for wireless sensor networks  

Science Conference Proceedings (OSTI)

In many applications of wireless sensor networks (WSN), sensors are deployed un-tethered in hostile environments. For location-aware WSN applications, it is essential to ensure that sensors can determine their location, even in the presence of malicious ... Keywords: range-independent, secure localization, wireless sensor networks

Loukas Lazos; Radha Poovendran

2004-10-01T23:59:59.000Z

165

A zone-based clustering method for ubiquitous robots based on wireless sensor networks  

Science Conference Proceedings (OSTI)

In this paper, we propose a topology configuration method for wireless sensor networks with an objective of well balancing energy consumption over all sensor nodes without generating any isolated sensor nodes. Our scheme has some attractive features: ... Keywords: clustering, routing, ubiquitous robots, wireless sensor network

Kyungmi Kim; Hyunsook Kim; Young Choi; Sukgyu Lee; Kijun Han

2006-10-01T23:59:59.000Z

166

Security computing for the resiliency of protecting from internal attacks in distributed wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor network (WSNs) have been making up of a mass of spatially distributed autonomous sensors to monitor physical or environmental conditions. However, security threats to WSNs become increasingly diversified, prevention based due to their ... Keywords: distributed wireless sensor networks, internal attacks, resiliency, security computing, sensor optimum deployment

Xu Huang; Dharmendra Sharma; Muhammad Ahmed

2012-09-01T23:59:59.000Z

167

Wireless Sensor Networks for Underwater Localization: A Survey  

E-Print Network (OSTI)

Autonomous Underwater Vehicles (AUVs) have widely deployed in marine investigation and ocean exploration in recent years. As the fundamental information, their position information is not only for data validity but also for many real-world applications. Therefore, it is critical for the AUV to have the underwater localization capability. This report is mainly devoted to outline the recent advancement of Wireless Sensor Networks (WSN) based underwater localization. Several classic architectures designed for Underwater Acoustic Sensor Network (UASN) are briefly introduced. Acoustic propagation and channel models are described and several ranging techniques are then explained. Many state-of-the-art underwater localization algorithms are introduced, followed by the outline of some

Sen Wang; Huosheng Hu

2012-01-01T23:59:59.000Z

168

The impact of a realistic packet traffic model on the performance of surveillance wireless sensor networks  

Science Conference Proceedings (OSTI)

It is quite common to see that classical periodic or Poisson packet traffic models are used for evaluating the performance of wireless sensor networks (WSNs). However, these models may not be appropriate for modeling the data traffic resulting from a ... Keywords: Intrusion detection applications, Packet traffic model, Surveillance sensor networks, Wireless sensor networks

Ilker Demirkol; Cem Ersoy; Fatih Alagöz; Hakan Deliç

2009-02-01T23:59:59.000Z

169

On compressing data in wireless sensor networks for energy efficiency and real time delivery  

Science Conference Proceedings (OSTI)

Wireless sensor networks possess significant limitations in storage, bandwidth, processing, and energy. Additionally, real-time sensor network applications such as monitoring poisonous gas leaks cannot tolerate high latency. While some good data compression ... Keywords: Compression, Latency, Real-time, Wireless sensor network

Tommy Szalapski; Sanjay Madria

2013-06-01T23:59:59.000Z

170

Energy-aware Gateway Selection for Increasing the Lifetime of Wireless Body Area Sensor Networks  

Science Conference Proceedings (OSTI)

A Wireless Body Area Sensor Network (WBASN) is composed of a set of sensor nodes, placed on, near or within a human body. WBASNs opt to continuously monitor the health conditions of individuals under medical risk, e.g., elders and chronically ill people, ... Keywords: Energy harvesting, Gateway selection algorithm, Network lifetime, Selective engagement of nodes, Wireless Body Area Sensor Networks (WBASN)

Cuneyt Bayilmis; Mohamed Younis

2012-06-01T23:59:59.000Z

171

Blind Adaptive Weighted Aggregation Scheme for Event Detection in Multihop Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

The problem of decision fusion for event detection in Wireless Sensor Networks is the prime focus of this paper. Our proposed algorithm focuses on single hop (star) and multihop (tree) topologies, which are commonly deployed wireless sensor network topologies. ... Keywords: Adaptive aggregation, Distributed detection, Sensor network

Bhushan G. Jagyasi; Deepthi Chander; U. B. Desai; S. N. Merchant; Bikash K. Dey

2011-06-01T23:59:59.000Z

172

Security Schemes for Wireless Sensor Networks with Mobile Sink  

E-Print Network (OSTI)

Mobile sinks are vital in many wireless sensor applications for efficient data collection, data querying, and localized sensor reprogramming. Mobile sinks prolong the lifetime of a sensor network. However, when sensor networks with mobile sinks are deployed in a hostile environment, security became a critical issue. They become exposed to varieties of malicious attacks. Thus, anti threats schemes and security services, such as mobile sink?s authentication and pairwise key establishment, are essential 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. In addition to the sensors limited resources, sink mobility required frequent exchange of cryptography information between the sensors and MS each time the MS updates its location which imposes extra communication overhead on the sensors. In this dissertation, we consider a number of security schemes for WSN (wireless sensor network) with MS. The schemes offer high network?s resiliency and low communication overhead against nodes capture, MS replication and wormhole attacks. We propose two schemes based on the polynomial pool scheme for tolerating nodes capture: the probabilistic generation key pre-distribution scheme combined with polynomial pool scheme, and the Q-composite generation key scheme combined with polynomial pool scheme. The schemes ensure low communication overhead and high resiliency. For anti MS replication attack scheme, we propose the multiple polynomial pools scheme that provide much higher resiliency to MS replication attack as compared to the single polynomial pool approach. Furthermore, to improve the network resiliency against wormhole attack, two defensive mechanisms were developed according to the MS mobility type. In the first technique, MS uses controlled mobility. We investigate the problem of using a single authentication code by sensors network to verify the source of MS beacons, and then we develop a defensive approach that divide the sensor network into different authentication code?s grids. In the second technique, random mobility is used by MS. We explore the use of different communication channels available in the sensor hardware combined with polynomial pool scheme.

Rasheed, Amar Adnan

2010-05-01T23:59:59.000Z

173

Review: Connected dominating sets in wireless ad hoc and sensor networks - A comprehensive survey  

Science Conference Proceedings (OSTI)

Topology control is a fundamental issue in wireless ad hoc and sensor networks. Due to intrinsic characteristic of flatness, hierarchical topology can achieve the scalability and efficiency of a wireless network. To solve this problem, one can construct ... Keywords: Connected dominating set (CDS), Topology control, Virtual backbone network, Wireless network

Jiguo Yu; Nannan Wang; Guanghui Wang; Dongxiao Yu

2013-01-01T23:59:59.000Z

174

Power control schemes in wireless sensor networks for homecare e-health applications  

Science Conference Proceedings (OSTI)

Power control is an important research topic for ad-hoc Wireless Sensor Networks (WSNs). In today's sophisticated and competitive wireless environment, the control of the energy consumption in a WSN for homecare e-health makes it possible to guarantee ... Keywords: homecare e-health, low-energy consumption, power control, wireless sensor networks

Nikolaos A. Pantazis; Dimitrios D. Vergados; Nikolaos I. Miridakis; Dimitrios J. Vergados

2008-07-01T23:59:59.000Z

175

A hardware/software simulation environment for energy harvesting wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks (WSNs) consist of wirelessly communicating nodes with an autarkic power supply for each node. Typically, the consumable energy of these nodes is very limited. Energy harvesting systems (EHSs) can be used to extend the lifetime ... Keywords: energy harvesting, simulation environment, wireless sensor networks

Leander B. Hörmann; Philipp M. Glatz; Karima B. Hein; Christian Steger; Reinhold Weiss

2012-10-01T23:59:59.000Z

176

InRout - A QoS aware route selection algorithm for industrial wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks are a key enabling technology for industrial monitoring applications where the use of wireless infrastructure allows high adaptivity and low cost in terms of installation and retrofitting. To facilitate the move from the current ... Keywords: IEEE 802.15.4, Industrial, Quality of service, Reinforcement learning, Routing, Wireless sensor networks (WSNs)

Berta Carballido Villaverde; Susan Rea; Dirk Pesch

2012-05-01T23:59:59.000Z

177

Three-Dimensional Location-Based IPv6 Addressing for Wireless Sensor Networks in Smart Grid  

Science Conference Proceedings (OSTI)

Smart grid is one of the most important applications of the Internet of Things (IoT) for environmental sustainability and energy efficiency issues in recent years. IP-based wireless sensor networks (IP-WSNs) are considered as one of the promising wireless ... Keywords: Smart grid, Wireless Sensor Networks, Spatial IP, IPv6 address, Three dimensional spaces

Chih-Yung Cheng; Chi-Cheng Chuang; Ray-I Chang

2012-03-01T23:59:59.000Z

178

Relay node placement in structurally damaged wireless sensor networks via triangular steiner tree approximation  

Science Conference Proceedings (OSTI)

Wireless sensor networks (WSNs) have many applications which operate in hostile environments. Due to the harsh surroundings, WSNs may suffer from a large scale damage that causes many nodes to fail simultaneously and the network to get partitioned into ... Keywords: Fault-tolerance, Network segmentation, Relay node placement, Wireless sensor networks

Fatih Senel; Mohamed Younis

2011-10-01T23:59:59.000Z

179

A Reputation Model Based on Behavior Trust in Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

Trust management has an important significance on the reliable operation and safety guarantee in Wireless Sensor Networks(WSNs). Previous works were implemented by exchanging key among neighboring sensors. Considering that in many cases, the sensor nodes’ ...

Ming-Zheng Zhou; Yi Zhang; Jun Wang; Sen-Yan Zhao

2009-09-01T23:59:59.000Z

180

Design of large-scale agricultural wireless sensor networks: email from the vineyard  

Science Conference Proceedings (OSTI)

We describe the design and implementation of a large-scale Wireless Sensor Network (WSN) for agriculture monitoring. As a part of validation we have deployed a prototype of 64 sensors to monitor a commercial vineyard. The system provides ... Keywords: WSN testbed, agricultural WSNs, agriculture monitoring, commercial vineyards, data collection, data storage, geographical coverage, large-scale WSNs, spatial resolution, vineyeard monitoring, wireless networks, wireless sensor networks

Christine Jardak; Krisakorn Rerkrai; Aleksandar Kovacevic; Janne Riihijarvi; Petri Mahonen

2010-08-01T23:59:59.000Z

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


181

A green wireless sensor network for environmental monitoring and risk identification  

Science Conference Proceedings (OSTI)

A sensor-based community network for environmental data gathering and predictive analysis has been developed. A mesh network of wireless sensors reports data to a central site for environmental monitoring and risk identification. Data analysis and ...

Patricia Morreale; Feng Qi; Paul Croft

2011-06-01T23:59:59.000Z

182

APS: Distributed air pollution sensing system on Wireless Sensor and Robot Networks  

Science Conference Proceedings (OSTI)

Rapid emergence of Wireless Sensor and Robot Networks (WSRNs) contributes to the deployment of an environmental monitoring system. Three challenging issues are critical to design of an environmental monitoring system, including energy efficiency of sensors, ... Keywords: Energy efficiency, Environmental monitoring, Sensing region partition, Wireless Sensor and Robot Networks

Huai-Lei Fu; Hou-Chun Chen; Phone Lin

2012-05-01T23:59:59.000Z

183

Evaluation of Metadata-Based Data Aggregation Scheme in Clustering Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

In a wireless sensor network (WSN) system, an important problem for the special application, in which the battery of a sensor node cannot be exchanged, is how to extend the life time of the entire WSN system. In the past we proposed an improvement to ... Keywords: energy efficiency, power consumption, wireless sensor network

Yoshitsugu Obashi; Tomohiro Kokogawa; Yi Zheng; Huifang Chen; Hiroshi Mineno; Tadanori Mizuno

2007-09-01T23:59:59.000Z

184

Energy estimator for weather forecasts dynamic power management of wireless sensor networks  

Science Conference Proceedings (OSTI)

Emerging Wireless Sensor Networks (WSN) consist of spatially distributed autonomous sensors. Although an embedded battery has limited autonomy, most WSNs outperform this drawback by harvesting ambient energy from the environment. Nevertheless, this external ... Keywords: design tools, dynamic power management, weather forecasts, wireless sensor networks

Nicolas Ferry; Sylvain Ducloyer; Nathalie Julien; Dominique Jutel

2011-09-01T23:59:59.000Z

185

Complex Event Detection in Extremely Resource-Constrained Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

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

Michael Zoumboulakis; George Roussos

2011-04-01T23:59:59.000Z

186

PASES: An energy-aware design space exploration framework for wireless sensor networks  

Science Conference Proceedings (OSTI)

Energy consumption is one of the most constraining requirements for the development and implementation of wireless sensor networks. Many design aspects affect energy consumption, ranging from the hardware components, operations of the sensors, the communication ... Keywords: Design space exploration, Embedded systems, Energy aware, Platform based design, Wireless sensor networks

Ivan Minakov, Roberto Passerone

2013-09-01T23:59:59.000Z

187

Opportunistic routing in wireless sensor networks powered by ambient energy harvesting  

Science Conference Proceedings (OSTI)

Energy consumption is an important issue in the design of wireless sensor networks (WSNs) which typically rely on portable energy sources like batteries for power. Recent advances in ambient energy harvesting technologies have made it possible for sensor ... Keywords: Energy harvesting, Opportunistic routing, Wireless sensor networks

Zhi Ang Eu; Hwee-Pink Tan; Winston K. G. Seah

2010-12-01T23:59:59.000Z

188

SENHOD: scarce-resources wireless sensor network for healthcare in oil derricks  

Science Conference Proceedings (OSTI)

We present our experience with designing, developing, and deploying of a Scarce-resource Wireless Sensor Network (SWSN) for monitoring temperature and humidity high above oil derricks (drilling tower) in PEMEX (Parastatal Mexican Petroleum Company) drilling ... Keywords: derrickmen, exposure, healthcare, humidity, oil derrick, sensor, temperature, wireless sensor network

Pablo Pancardo; Juan C. Dueñas

2008-01-01T23:59:59.000Z

189

Smart bridges, smart tunnels: Transforming wireless sensor networks from research prototypes into robust engineering infrastructure  

Science Conference Proceedings (OSTI)

We instrumented large civil engineering infrastructure items, such as bridges and tunnels, with sensors that monitor their operational performance and deterioration. In so doing we discovered that commercial offerings of wireless sensor networks (WSNs) ... Keywords: Civil engineering, Deployment, Radio propagation, Realworld experience, Security, Wireless sensor networks

Frank Stajano; Neil Hoult; Ian Wassell; Peter Bennett; Campbell Middleton; Kenichi Soga

2010-11-01T23:59:59.000Z

190

Anomaly detection using self-organizing map and wavelets in wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless Sensor Networks (WSNs) have been developed and extensively applied in agriculture monitoring to monitor and collect various physical attributes within a specific area or environment of interest. Data readings from the sensors may be abnormal ... Keywords: agriculture monitoring, anomaly detection, discrete wavelet transform, self-organizing map, wavelets, wireless sensor networks

Supakit Siripanadorn; Wipawee Hattagam; Neung Teaumroong

2010-10-01T23:59:59.000Z

191

Low-power TinyOS tuned processor platform for wireless sensor network motes  

Science Conference Proceedings (OSTI)

In this article we describe a low-power processor platform for use in Wireless Sensor Network (WSN) nodes (motes). WSN motes are small, battery-powered devices comprised of a processor, sensors, and a radio frequency transceiver. It is expected that ... Keywords: Embedded system design, Wireless Sensor Network, hardware-software codesign, low power processor

R. K. Raval; C. H. Fernandez; C. J. Bleakley

2010-05-01T23:59:59.000Z

192

An energy harvesting aware data dissemination strategy for energy rechargeable wireless sensor networks.  

E-Print Network (OSTI)

??A wireless sensor network (WSN) is often deployed in a harsh or hard-reach area and is required to operate for a long period time to… (more)

Gosavi, Amit

2012-01-01T23:59:59.000Z

193

CEMA: Comfort Control and Energy Management Algorithms for Use in Residential Spaces Through Wireless Sensor Networks .  

E-Print Network (OSTI)

??In recent years, many strides have been achieved in the area of Wireless Sensor Networks (WSNs), which is leading to constant innovations in the types… (more)

Henry, Rami F.Z.

2010-01-01T23:59:59.000Z

194

(An Evolution Scheme of the Military Surveillance System Using Wireless Sensor Network)  

E-Print Network (OSTI)

)' , . . , , 24 . , , , UAV(Unmanned Air Vehicle), CCTV Energy-Efficient MAC Protocol for Wireless Sensor Networks," In Proc. ACM Sensys 2003, Nov. 2003. [11] W

195

Quality of Service for Wireless Sensor Networks in Smart Grid Applications .  

E-Print Network (OSTI)

??Monitoring and controlling smart grid assets in a timely and reliable manner is highly desired for emerging smart grid applications. Wireless Sensor Networks (WSNs) are… (more)

Al-Anbagi, Irfan

2013-01-01T23:59:59.000Z

196

Interference-Aware Fair Rate Control in Wireless Sensor Networks  

E-Print Network (OSTI)

In a wireless sensor network of N nodes transmitting data to a single base station, possibly over multiple hops, what distributed mechanisms should be implemented in order to dynamically allocate fair and efficient transmission rates to each node? Our interference-aware fair rate control (IFRC) detects incipient congestion at a node by monitoring the average queue length, communicates congestion state to exactly the set of potential interferers using a novel low-overhead congestion sharing mechanism, and converges to a fair and efficient rate using an AIMD control law. We evaluate IFRC extensively on a 40-node wireless sensor network testbed. IFRC achieves a fair and efficient rate allocation that is within 20- 40% of the optimal fair rate allocation on some network topologies. Its rate adaptation mechanism is highly effective: we did not observe a single instance of queue overflow in our many experiments. Finally, IFRC can be extended easily to support situations where only a subset of the nodes transmit, where the network has multiple base stations, or where nodes are assigned different transmission weights.In a wireless sensor network of N nodes transmitting data to a single base station, possibly over multiple hops, what distributed mechanisms should be implemented in order to dynamically allocate fair and efficient transmission rates to each node? Our interference-aware fair rate control (IFRC) detects incipient congestion at a node by monitoring the average queue length, communicates congestion state to exactly the set of potential interferers using a novel low-overhead congestion sharing mechanism, and converges to a fair and efficient rate using an AIMD control law. We evaluate IFRC extensively on a 40-node wireless sensor network testbed. IFRC achieves a fair and efficient rate allocation that is within 20- 40% of the optimal fair rate allocation on some network topologies. Its rate adaptation mechanism is highly effective: we did not observe a single instance of queue overflow in our many experiments. Finally, IFRC can be extended easily to support situations where only a subset of the nodes transmit, where the network has multiple base stations, or where nodes are assigned different transmission weights.

Sumit Rangwala; Ramakrishna Gummadi; Ramesh Govindan; Konstantinos Psounis

2006-01-01T23:59:59.000Z

197

LWOS: a localization method without on-body sensor in wireless sensor networks  

Science Conference Proceedings (OSTI)

In many applications of wireless sensor networks (WSNs), the location information of users is very important. In this paper we present a localization method without on-body sensor (LWOS). The basic idea is that when a person is standing between a pair ...

Shuangquan Wang; Ningjiang Chen; Xin Chen; Jie Yang; Jun Lu

2006-08-01T23:59:59.000Z

198

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

E-Print Network (OSTI)

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

Savazzi, Stefano

199

Broadcast routing in wireless sensor networks with dynamic power management and multi-coverage backbones  

Science Conference Proceedings (OSTI)

In a wireless sensor network (WSN), nodes are power constrained. As a consequence, protocols must be energy efficient to prolong the network lifetime while keeping some quality-of-service (QoS) requirements. In WSNs, most protocols resort to the broadcast ... Keywords: Battery capacity recovery, Battery model, Dynamic power management, Multi-coverage backbones, Topology control, Wireless sensor networks

Paulo Sérgio Sausen; Marco Aurélio Spohn; Angelo Perkusich

2010-03-01T23:59:59.000Z

200

Programming wireless sensor networks: Fundamental concepts and state of the art  

Science Conference Proceedings (OSTI)

Wireless sensor networks (WSNs) are attracting great interest in a number of application domains concerned with monitoring and control of physical phenomena, as they enable dense and untethered deployments at low cost and with unprecedented flexibility. ... Keywords: Wireless sensor networks, middleware, networked embedded systems, programming abstractions

Luca Mottola; Gian Pietro Picco

2011-04-01T23:59:59.000Z

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


201

An evolutionary framework for routing protocol analysis in wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless Sensor Networks (WSNs) are widely adopted for applications ranging from surveillance to environmental monitoring. While powerful and relatively inexpensive, they are subject to behavioural faults which make them unreliable. Due to the complex ... Keywords: anomaly detection, evolutionary algorithms, network efficiency, routing protocols, wireless sensor networks

Doina Bucur; Giovanni Iacca; Giovanni Squillero; Alberto Tonda

2013-04-01T23:59:59.000Z

202

Energy-efficient neighbor discovery protocol for mobile wireless sensor networks  

Science Conference Proceedings (OSTI)

Low energy consumption is a critical design requirement for most wireless sensor network (WSN) applications. Due to minimal transmission power levels, time-varying environmental factors and mobility of nodes, network neighborhood changes frequently. ... Keywords: Algorithm/protocol design and analysis, Low power design, Mobile computing, Wireless sensor networks

Mikko Kohvakka; Jukka Suhonen; Mauri Kuorilehto; Ville Kaseva; Marko Hännikäinen; Timo D. Hämäläinen

2009-01-01T23:59:59.000Z

203

A wireless sensor network design tool to support building energy management  

Science Conference Proceedings (OSTI)

The physical location of sensor nodes strongly influences the performance of the network from the perspective of accurate data sensing and reliable communication. Therefore deployment planning can be regarded as an essential stepping stone to producing ... Keywords: building management system, heterogeneous wireless network infrastructure, industry foundation classes, wireless sensor network design

Antony Guinard; Alan McGibney; Dirk Pesch

2009-11-01T23:59:59.000Z

204

Survey Focal design issues affecting the deployment of wireless sensor networks for pipeline monitoring  

Science Conference Proceedings (OSTI)

Wireless sensor networks (WSNs) are a target technology for oil and gas pipeline monitoring because they offer benefits of low cost, ease of deployment and ability to cater for data acquisition at great spatial and temporal scales. In order for WSN to ... Keywords: Energy harvesting, Localization, Network reliability, Oil and gas pipeline monitoring, Power efficiency, Sensing modality, Wireless sensor networks

Gbenga Owojaiye; Yichuang Sun

2013-05-01T23:59:59.000Z

205

Controlled and self-organized routing for large-scale wireless sensor networks  

Science Conference Proceedings (OSTI)

Improving the scalability and robustness of wireless sensor networks is an important task, and much research on self-organization has been conducted toward this end. However, desired behavior is not yet guaranteed in much larger networks based on pure ... Keywords: Self-organization, controlled self-organization, robustness, scalability, wireless sensor networks

Daichi Kominami, Masashi Sugano, Masayuki Murata, Takaaki Hatauchi

2013-11-01T23:59:59.000Z

206

A memetic algorithm for optimal dynamic design of wireless sensor networks  

Science Conference Proceedings (OSTI)

We present a memetic algorithm that dynamically optimizes the design of a wireless sensor network towards energy conservation and extension of the life span of the network, taking into consideration application-specific requirements, communication constraints ... Keywords: Design optimization, Energy conservation, Memetic algorithms, Wireless sensor networks

Konstantinos P. Ferentinos; Theodore A. Tsiligiridis

2010-02-01T23:59:59.000Z

207

Stability Problems of Transport of Event Data in Realistic Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

In general, wireless sensor networks have a certain degree of spatial redundancy, which means that a high number of nodes can sense the same event at the same time. This redundancy permits to simplify both MAC protocol and the transport of sensed data. ... Keywords: Data Transport, Distortion, Event Detection, Multi-hop Networks, Path stability, Shadowing, Stability, Wireless Sensor Networks, ns-2 Simulations

Giuseppe De Marco; Leonard Barolli

2008-04-01T23:59:59.000Z

208

Experiences from a wireless sensor network deployment in a petroleum environment  

Science Conference Proceedings (OSTI)

In this paper, we describe our experiences in the design, implementation and deployment of a wireless sensor network in a petroleum facility. A heterogeneous architecture is devised using Commercial Off-the-Shelf equipment and hardware interface is designed ... Keywords: embedded systems, heterogeneous networks, wireless sensor networks

Ian Johnstone; James Nicholson; Babar Shehzad; Jeff Slipp

2007-08-01T23:59:59.000Z

209

Development of a photovoltaic power supply for wireless sensor networks.  

DOE Green Energy (OSTI)

This report examines the design process of a photovoltaic (solar) based power supply for wireless sensor networks. Such a system stores the energy produced by an array of photovoltaic cells in a secondary (rechargeable) battery that in turn provides power to the individual node of the sensor network. The goal of such a power supply is to enable a wireless sensor network to have an autonomous operation on the order of years. Ideally, such a system is as small as possible physically while transferring the maximum amount of available solar energy to the load (the node). Within this report, there is first an overview of current solar and battery technologies, including characteristics of different technologies and their impact on overall system design. Second is a general discussion of modeling, predicting, and analyzing the extended operation of a small photovoltaic power supply and setting design parameters. This is followed by results and conclusions from the testing of a few basic systems. Lastly, some advanced concepts that may be considered in order to optimize future systems will be discussed.

Harvey, Matthew R.; Kyker, Ronald D.

2005-06-01T23:59:59.000Z

210

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

SciTech Connect

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

Yi Jia

2011-02-28T23:59:59.000Z

211

Measuring air quality in city areas by vehicular wireless sensor networks  

Science Conference Proceedings (OSTI)

This paper considers a micro-climate monitoring scenario, which usually requires deploying a large number of sensor nodes to capture environmental information. By exploiting vehicular sensor networks (VSNs), it is possible to equip fewer nodes on cars ... Keywords: Micro-climate monitoring, Opportunistic communication, Pervasive computing, Vehicular sensor network, Wireless sensor network

Shu-Chiung Hu; You-Chiun Wang; Chiuan-Yu Huang; Yu-Chee Tseng

2011-11-01T23:59:59.000Z

212

Wireless Sensor Network for Advanced Energy Management Solutions  

Science Conference Proceedings (OSTI)

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

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

2009-09-23T23:59:59.000Z

213

Secure Position Verification for Wireless Sensor Networks in Noisy Channels  

E-Print Network (OSTI)

Position verification in wireless sensor networks (WSNs) is quite tricky in presence of attackers (malicious sensor nodes), who try to break the verification protocol by reporting their incorrect positions (locations) during the verification stage. In the literature of WSNs, most of the existing methods of position verification have used trusted verifiers, which are in fact vulnerable to attacks by malicious nodes. They also depend on some distance estimation techniques, which are not accurate in noisy channels (mediums). In this article, we propose a secure position verification scheme for WSNs in noisy channels without relying on any trusted entities. Our verification scheme detects and filters out all malicious nodes from the network with very high probability.

Mandal, Partha Sarathi

2011-01-01T23:59:59.000Z

214

Monitoring Energy Consumption In Wireless Sensor Networks  

E-Print Network (OSTI)

sequences of temperature maps. It is used to compare and evaluate beacon-less geographic routing algorithms information to divide the network into fixed square grids and nodes in each grid alternate between sleeping between dominating and dominated. ­ Transmission power control: The transmission power of the nodes

Turau, Volker

215

A Self-Adaptive Spectrum Management Middleware for Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

The vision of the Internet of Things, wherein everyday objects are embedded with smart wireless sensor devices, is making these sensor devices increasingly pervasive. As the density of their deployment in overlapping or adjacent areas increases, the ... Keywords: Mediaaccess control, Spectrum management, Wireless sensor networks

Robert Thompson; Gang Zhou; Lei Lu; Sudha Krishnamurthy; Hover Dong; Xin Qi; Yantao Li; Matthew Keally; Zhen Ren

2013-01-01T23:59:59.000Z

216

Employment of wireless sensor networks for full-scale ship application  

Science Conference Proceedings (OSTI)

In this study, basic experiments regarding the wireless sensor network were conducted on a 3,000-ton-class training ship as the first step in applying the ubiquitous technology to a real ship. Various application fields of the technology in terms of ... Keywords: WSN (wireless sensor network), monitoring, ship, ubiquitous, zigbee

Bu-Geun Paik; Seong-Rak Cho; Beom-Jin Park; Dongkon Lee; Jong-Hwui Yun; Byung-Dueg Bae

2007-12-01T23:59:59.000Z

217

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

Science Conference Proceedings (OSTI)

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

R Jaichandran; A. Anthony Irudhayaraj

2011-12-01T23:59:59.000Z

218

Coverage preserved optimal routing protocol for improving the quality of service in wireless sensor networks  

Science Conference Proceedings (OSTI)

In wireless sensor network, there are many hurdles takes place in providing quality of service routing to a desired level. The majority of routing protocols in wireless sensor networks concentrates only on energy efficiency as a prime factor, and only ... Keywords: cluster-head, coverage, energy efficiency, lifetime, multi-path routing, quality of service, self-scheduling

B. Paramasivan; K. Mohaideen Pitchai; D. Usha; S. Radha Krishnan

2009-11-01T23:59:59.000Z

219

Efficient solution techniques for the integrated coverage, sink location and routing problem in wireless sensor networks  

Science Conference Proceedings (OSTI)

Sensors are tiny electronic devices having limited battery energy and capability for sensing, data processing and communicating. They can collectively behave to provide an effective wireless network that monitors a region and transmits the collected ... Keywords: Integer programming, Tabu search, Wireless sensor networks

Evren Güney; Necati Aras; ?. Kuban Alt?nel; Cem Ersoy

2012-07-01T23:59:59.000Z

220

An Energy-Efficient Cooperative Node Selction Scheme in Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

In this paper, we propose a novel cooperative node selection scheme in wireless sensor networks that operate in energy-constrained environment. This scheme can obtain higher energy efficiency than the traditional cooperative transmission, which only ... Keywords: cooperative node selection, energy effiency, wireless sensor networks

Yu Zhang; Yueming Cai; Wendong Yang; Youyun Xu

2009-02-01T23:59:59.000Z

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


221

Energy-neutral scheduling and forwarding in environmentally-powered wireless sensor networks  

Science Conference Proceedings (OSTI)

In environmentally-powered wireless sensor networks (EPWSNs), low latency wakeup scheduling and packet forwarding is challenging due to dynamic duty cycling, posing time-varying sleep latencies and necessitating the use of dynamic wakeup schedules. We ... Keywords: Dynamic duty cycling, Dynamic wakeup scheduling, Energy-harvesting, Routing, Sleep latency, Wireless sensor network

Alvin C. Valera; Wee-Seng Soh; Hwee-Pink Tan

2013-05-01T23:59:59.000Z

222

Topology control for delay-constraint data collection in wireless sensor networks  

Science Conference Proceedings (OSTI)

Data collection is one of the most important operations in wireless sensor networks. Many practical applications require the real-time data transmission, such as monitoring, tracking, etc. In this paper, we import and define the topology control problem ... Keywords: Data collection, Delay, Energy efficient, Topology control, Wireless sensor networks

Hongli Xu; Liusheng Huang; Wang Liu; Gang Wang; Yang Wang

2009-11-01T23:59:59.000Z

223

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

Science Conference Proceedings (OSTI)

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

Shensheng Tang; Wei Li

2006-08-01T23:59:59.000Z

224

Original paper: ZigBee-based wireless sensor network localization for cattle monitoring in grazing fields  

Science Conference Proceedings (OSTI)

This paper presents the design of a localization scheme in wireless sensor networks (WSN) for cattle monitoring applications in grazing fields. No additional hardware was required for distance estimation since they were performed using the link quality ... Keywords: Cattle monitoring, Energy-efficient, Localization, Low-cost, Wireless sensor networks, ZigBee

Juan Ignacio Huircán; Carlos Muñoz; Héctor Young; Ludwig Von Dossow; Jaime Bustos; Gabriel Vivallo; Marcelo Toneatti

2010-11-01T23:59:59.000Z

225

Self-sustaining, efficient and forward-secure cryptographic constructions for Unattended Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

Unattended Wireless Sensor Networks (UWSNs) operating in hostile environments face great security and performance challenges due to the lack of continuous real-time communication with the final data receivers (e.g., mobile data collectors). The lack ... Keywords: Aggregate signatures, Applied cryptography, Digital signatures, Forward security, Unattended Wireless Sensor Networks (UWSNs)

Attila Altay Yavuz; Peng Ning

2012-09-01T23:59:59.000Z

226

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

E-Print Network (OSTI)

Utilizing Solar Power in Wireless Sensor Networks Thiemo Voigt, Hartmut Ritter, Jochen Schiller propose to utilize solar power in wireless sensor networks, establishing a topology where ­ changing over show that both protocols provide significant energy savings when utilizing solar power. The paper shows

Voigt, Thiemo

227

Spatial correlation and mobility-aware traffic modeling for wireless sensor networks  

Science Conference Proceedings (OSTI)

Recently, there has been a great deal of research on using mobility in wireless sensor networks (WSNs) to facilitate surveillance and reconnaissance in a wide deployment area. Besides providing an extended sensing coverage, node mobility along with spatial ... Keywords: long-range dependence, mobility, resource provision, spatial correlation, wireless sensor network (WSN)

Pu Wang; Ian F. Akyildiz

2011-12-01T23:59:59.000Z

228

DLS: A dynamic local stitching mechanism to rectify transmitting path fragments in wireless sensor networks  

Science Conference Proceedings (OSTI)

In this paper, a pair of novel rectification algorithms (greedy negative pressure push algorithm and dynamic local stitching algorithm) is proposed to cooperatively repair broken transmitting paths in Wireless Sensor Networks. Our approach is to overcome ... Keywords: Data transmitting integrality, Dynamic local stitching algorithm, Fault tolerance, Wireless sensor networks

Ting Yang; Yugeng Sun; Javid Taheri; Albert Y. Zomaya

2013-01-01T23:59:59.000Z

229

TinyNode: a comprehensive platform for wireless sensor network applications  

Science Conference Proceedings (OSTI)

We introduce the TinyNode platform for wireless sensor networks. Supporting both research and industrial deployments, the platform offers communication ranges that exceed current platforms by a factor of 3 to 5, while consuming similar energy. It comes ... Keywords: embedded systems, wireless sensor networks

Henri Dubois-Ferrière; Laurent Fabre; Roger Meier; Pierre Metrailler

2006-04-01T23:59:59.000Z

230

Hands-on approach to teaching wireless sensor networks at the undergraduate level  

Science Conference Proceedings (OSTI)

Teaching wireless sensor networks (WSNs) at the undergraduate level is both challenging and rewarding. WSNs include low-level programming and debugging, power-aware operations, novel communication paradigms and interdisciplinary applications in real ... Keywords: MSB430, deployment, hands-on experience, teaching, undergraduate, wireless sensor networks

Anna Förster; Mehdi Jazayeri

2010-06-01T23:59:59.000Z

231

Low-power/low-voltage RF microsystems for wireless sensors networks  

Science Conference Proceedings (OSTI)

This paper presents radio-frequency (RF) microsystems (MSTs) composed by low-power devices for use in wireless sensors networks (WSNs). The RF CMOS transceiver is the main electronic system and its power consumption is a critical issue. Two RF CMOS transceivers ... Keywords: RF CMOS transceiver, RF microsystems, Wireless sensors networks

J. P. Carmo; J. H. Correia

2009-12-01T23:59:59.000Z

232

Sink placement on a 3D terrain for border surveillance in wireless sensor networks  

Science Conference Proceedings (OSTI)

With their distributed nature and redundant operation capability, wireless sensor networks are very suitable for border surveillance scenarios that track intruders trying to breach to a safe side. In such scenarios, keeping the operation going on for ... Keywords: Border surveillance, Discrete event simulation, Genetic algorithms, Sink placement, Three dimensional terrain, Wireless sensor networks

Rabun Kosar; Cem Ersoy

2012-02-01T23:59:59.000Z

233

Towards Verifying Correctness of Wireless Sensor Network Applications Using Insense and Spin  

Science Conference Proceedings (OSTI)

The design and implementation of wireless sensor network applications often require domain experts, who may lack expertise in software engineering, to produce resource-constrained, concurrent, real-time software without the support of high-level software ... Keywords: Concurrency, Distributed systems, Formal Modelling, Wireless Sensor Networks

Oliver Sharma; Jonathan Lewis; Alice Miller; Al Dearle; Dharini Balasubramaniam; Ron Morrison; Joe Sventek

2009-06-01T23:59:59.000Z

234

Fusion-based volcanic earthquake detection and timing in wireless sensor networks  

Science Conference Proceedings (OSTI)

Volcano monitoring is of great interest to public safety and scientific explorations. However, traditional volcanic instrumentation such as broadband seismometers are expensive, power hungry, bulky, and difficult to install. Wireless sensor networks ... Keywords: Volcano monitoring, data fusion, earthquake detection, wireless sensor network

Rui Tan; Guoliang Xing; Jinzhu Chen; Wen-Zhan Song; Renjie Huang

2013-03-01T23:59:59.000Z

235

Energy balanced scheme based on variable cell transmission range for wireless sensor networks  

Science Conference Proceedings (OSTI)

Clustering techniques in routing protocols improve the scalability of wireless sensor networks. To solve the "hot spot" problem caused by the cluster heads near the sink, which are burdened with heavy relay traffic via multi-hop transfer and tend to ... Keywords: clustering, energy balance, transmission range, wireless sensor networks

Xiao-heng Deng; Chugui Xu; Yi Liu

2009-09-01T23:59:59.000Z

236

Anomaly detection in wireless sensor networks using self-organizing map and wavelets  

Science Conference Proceedings (OSTI)

Wireless Sensor Networks (WSNs) have been applied in agriculture monitoring to monitor and collect various physical attributes within a specific area. It is important to detect data anomalies to determine a suitable course of action. The underlying aim ... Keywords: agriculture monitoring, anomaly detection, discrete wavelet transform, self-organizing map, wavelets, wireless sensor networks

Supakit Siripanadorn; Wipawee Hattagam; Neung Teaumroong

2010-10-01T23:59:59.000Z

237

A Novel Trust-Aware Geographical Routing Scheme for Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks are vulnerable to a wide set of security attacks, including those targeting the routing protocol functionality. The applicability of legacy security solutions is disputable (if not infeasible), due to severe restrictions in node ... Keywords: Routing attacks, Secure routing, Security, Trust model, Wireless sensor networks

Theodore Zahariadis; Panagiotis Trakadas; Helen C. Leligou; Sotiris Maniatis; Panagiotis Karkazis

2013-03-01T23:59:59.000Z

238

PKM: a pairwise key management scheme for wireless sensor networks  

Science Conference Proceedings (OSTI)

Sensor networks are characterized by strict resource limitations and large scalability. Many sensor network applications require secure communication, a crucial component, especially in harsh environments. Symmetric key cryptography is very attractive ... Keywords: key distribution, key management, security, sensor networks

F. An; X. Cheng; J. M. Rivera; J. Li; Z. Cheng

2005-08-01T23:59:59.000Z

239

Robust Clock Synchronization Methods for Wireless Sensor Networks  

E-Print Network (OSTI)

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 and control of factories and home appliances. Also, the rapid developments in the micro electro-mechanical systems (MEMS) technology and circuit design lead to a faster spread and adoption of WSNs. Wireless sensor networks consist of a number of nodes featured in general with energy-limited sensors capable of collecting, processing and transmitting information across short distances. Clock synchronization plays an important role in designing, implementing, and operating wireless sensor networks, and it is essential in ensuring a meaningful information processing order for the data collected by the nodes. Because the timing message exchanges between different nodes are affected by unknown possibly time-varying network delay distributions, the estimation of clock offset parameters represents a challenge. This dissertation presents several robust estimation approaches of the clock offset parameters necessary for time synchronization of WSNs via the two-way message exchange mechanism. In this dissertation the main emphasis will be put on building clock phase offset estimators robust with respect to the unknown network delay distributions. Under the assumption that the delay characteristics of the uplink and the downlink are asymmetric, the clock offset estimation method using the bootstrap bias correction approach is derived. Also, the clock offset estimator using the robust Mestimation technique is presented assuming that one underlying delay distribution is mixed with another delay distribution. Next, although computationally complex, several novel, efficient, and robust estimators of clock offset based on the particle filtering technique are proposed to cope with the Gaussian or non-Gaussian delay characteristics of the underlying networks. One is the Gaussian mixture Kalman particle filter (GMKPF) method. Another is the composite particle filter (CPF) approach viewed as a composition between the Gaussian sum particle filter and the KF. Additionally, the CPF using bootstrap sampling is also presented. Finally, the iterative Gaussian mixture Kalman particle filter (IGMKPF) scheme, combining the GMKPF with a procedure for noise density estimation via an iterative mechanism, is proposed.

Lee, Jae Han

2010-08-01T23:59:59.000Z

240

Wireless Sensor Network for Electric Transmission Line Monitoring  

SciTech Connect

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

Alphenaar, Bruce

2009-06-30T23:59:59.000Z

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


241

GCP: gossip-based code propagation for large-scale mobile wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks (WSN) have recently received an increasing interest. They are now expected to be deployed for long periods of time, thus requiring software updates. Updating the software code automatically on a huge number of sensors is a challenging ...

Yann Busnel; Marin Bertier; Eric Fleury; Anne-Marie Kermarrec

2007-10-01T23:59:59.000Z

242

The development of a wireless sensor network sensing node utilising adaptive self-diagnostics  

Science Conference Proceedings (OSTI)

In Wireless Sensor Network (WSN) applications, sensor nodes are often deployed in harsh environments. Routine maintenance, fault detection and correction is difficult, infrequent and expensive. Furthermore, for long-term deployments in excess of a year, ...

Hai Li; Mark C. Price; Jonathan Stott; Ian W. Marshall

2007-09-01T23:59:59.000Z

243

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

E-Print Network (OSTI)

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

Jourdan, Damien, 1978-

2006-01-01T23:59:59.000Z

244

ADV-MAC: Advertisement-Based MAC Protocol for Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

Several Medium Access Control (MAC) protocols have been proposed for wireless sensor networks with the objective of minimizing energy consumption. For example, Sensor-MAC (S-MAC) was proposed to reduce energy consumption by introducing a duty cycle. ...

Surjya Sarathi Ray; Ilker Demirkol; Wendi Heinzelman

2009-12-01T23:59:59.000Z

245

Area temperature system monitoring and computing based on adaptive fuzzy logic in wireless sensor networks  

Science Conference Proceedings (OSTI)

The many subfields in the wireless sensor networking literature include data fusion, data aggregation, remote environmental monitoring, sensing (temperature, pressure speed) and various military applications. The distance between sensor nodes can be ... Keywords: Fuzzy logic, Monitoring, RSSI, Temperature, WSN

Ing-Jiunn Su; Chia-Chih Tsai; Wen-Tsai Sung

2012-05-01T23:59:59.000Z

246

The design of sustainable wireless sensor network node using solar energy and phase change memory  

Science Conference Proceedings (OSTI)

Sustainability of wireless sensor network (WSN) is crucial to its economy and efficiency. While previous works have focused on solving the energy source limitation through solar energy harvesting, we reveal in this paper that sensor node's lifespan could ...

Ping Zhou, Youtao Zhang, Jun Yang

2013-03-01T23:59:59.000Z

247

An efficient scheme for data aggregation with star-graph hierarchical clustering structure in wireless sensor networks  

Science Conference Proceedings (OSTI)

Collecting state-based data from a network of sensors in large-scale deployment wireless sensor networks environment and aggregating those data through prominent sensors necessitate efficient organization of the network topology for the purpose of balancing ... Keywords: aggregation, pre-deployment, wireless sensor networks

Tung-Shih Su; Wen-Shyong Hsieh

2007-08-01T23:59:59.000Z

248

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

Science Conference Proceedings (OSTI)

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

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

2012-12-01T23:59:59.000Z

249

QoS and energy aware routing for real-time traffic in wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks are being built to facilitate automated information gathering in military, industrial, environmental and surveillance applications. Many such applications of Sensor Networks require improved QoS (packet delivery within a defined ... Keywords: QoS routing, Real-Time communication, Sensor networks

Abinash Mahapatra; Kumar Anand; Dharma P. Agrawal

2006-02-01T23:59:59.000Z

250

Optimizing lifetime for continuous data aggregation with precision guarantees in wireless sensor networks  

Science Conference Proceedings (OSTI)

This paper exploits the tradeoff between data quality and energy consumption to extend the lifetime of wireless sensor networks. To obtain an aggregate form of sensor data with precision guarantees, the precision constraint is partitioned and allocated ... Keywords: data accuracy, data aggregation, energy efficiency, network lifetime, sensor network

Xueyan Tang; Jianliang Xu

2008-08-01T23:59:59.000Z

251

LiSP: A lightweight security protocol for wireless sensor networks  

Science Conference Proceedings (OSTI)

Small low-cost sensor devices with limited resources are being used widely to build a self-organizing wireless network for various applications, such as situation monitoring and asset surveillance. Making such a sensor network secure is crucial to their ... Keywords: Authentication, key management, lightweight security, sensor networks

Taejoon Park; Kang G. Shin

2004-08-01T23:59:59.000Z

252

Integration of false data detection with data aggregation and confidential transmission in wireless sensor networks  

Science Conference Proceedings (OSTI)

In wireless sensor networks, compromised sensor nodes can inject false data during both data aggregation and data forwarding. The existing false data detection techniques consider false data injections during data forwarding only and do not allow any ... Keywords: data aggregation, data integrity, network-level security, sensor networks

Suat Ozdemir; Hasan Çam

2010-06-01T23:59:59.000Z

253

The placement-configuration problem for intrusion detection nodes in wireless sensor networks  

Science Conference Proceedings (OSTI)

The deployment and configuration of a distributed network intrusion detection system (NIDS) in a large Wireless Sensor Network (WSN) is an enormous challenge. A reduced number of devices equipped with detection capabilities have to be placed on strategic ...

Juan E. Tapiador, John A. Clark

2013-10-01T23:59:59.000Z

254

RECA: a ring-structured energy-efficient clustering architecture for robust communication in wireless sensor networks  

Science Conference Proceedings (OSTI)

Clustering methods have shown their promising effects in the conservation of energy in Wireless Sensor Networks (WSNs). In this paper, we present a Ring-structured Energy-efficient Clustering Architecture (RECA) for WSNs to prolong ... Keywords: WSNs, cluster head management, energy efficiency, load balancing algorithms, network lifetime, ring-structured clustering, simulation, wireless networks, wireless sensor networks

Guanfeng Li; Taieb Znati

2007-04-01T23:59:59.000Z

255

Research and design of meter reading system based on ZigBee wireless sensor network  

Science Conference Proceedings (OSTI)

With the rapid development of wireless technologies, it is possible for Chinese automatic meter reading system (AMRS) to be equipped with wireless sensor networks due to their low-cost, simplicity and mobility. In the current study, we compared the advantages ... Keywords: IEEE802.15.4, JN5121, ZigBee, profile, wireless meter reading

Dechao Sun; Shaohua Zheng

2009-01-01T23:59:59.000Z

256

Market-based resource allocation for distributed data processing in wireless sensor networks  

Science Conference Proceedings (OSTI)

In recent years, improved wireless technologies have enabled the low-cost deployment of large numbers of sensors for a wide range of monitoring applications. Because of the computational resources (processing capability, storage capacity, etc.) collocated ... Keywords: Wireless sensor networks, distributed algorithms, optimization, pricing

Andrew T. Zimmerman; Jerome P. Lynch; Frank T. Ferrese

2013-03-01T23:59:59.000Z

257

Stream data gathering in wireless sensor networks within expected lifetime  

Science Conference Proceedings (OSTI)

Sensor networks aim at collecting important sensor data for environment monitoring, e-health or hazardous conditions. Some applications do not need sensor networks with a long lifetime, such as monitoring an erupting volcano or monitoring hazardous conditions. ... Keywords: expected lifetime, sensor network, stream data gathering

Lei Shu; Zhangbing zhou; Antonio Aguilar; Manfred Hauswirth

2007-08-01T23:59:59.000Z

258

Constrained multiple deployment problem in wireless sensor networks with guaranteed lifetimes  

Science Conference Proceedings (OSTI)

We aimed to deploy wireless sensor networks with guaranteed lifetimes for outdoor monitoring projects. The provision of a guaranteed lifetime has rarely been studied in previous deployment problems. The use of battery packs as the power source for sensors ... Keywords: Deployment problem, Guaranteed lifetime, Sensor network

Chun-Han Lin; Chung-Ta King; Ting-Yi Chen

2011-02-01T23:59:59.000Z

259

An incremental deployment algorithm for wireless sensor networks using one or multiple autonomous agents  

Science Conference Proceedings (OSTI)

The paper studies the deployment problem of wireless sensor networks using one or multiple autonomous agents. An online incremental algorithm based on Voronoi partition is proposed to solve the problem, for which each agent deploys sensors one-at-a-time ... Keywords: Autonomous agent, Incremental deployment, Sensor network

Zhiyun Lin; Sijian Zhang; Gangfeng Yan

2013-01-01T23:59:59.000Z

260

A New Commissioning and Deployment Method for Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

Sensor networks are deployed on various environments in order to collect sensing information in many cases. It is not easy to optimize program codes of all nodes due to the environmental variety of deployment of sensor networks. Therefore, commissioning ... Keywords: sensor network, commissioning, ZigBee, network deployment

Bong Wan Kim; Seong-Soon Joo

2009-10-01T23:59:59.000Z

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


261

E2XLRADR (Energy Efficient Cross Layer Routing Algorithm with Dynamic Retransmission for Wireless Sensor Networks)  

E-Print Network (OSTI)

The main focus of this article is to achieve prolonged network lifetime with overall energy efficiency in wireless sensor networks through controlled utilization of limited energy. Major percentage of energy in wireless sensor network is consumed during routing from source to destination, retransmission of data on packet loss. For improvement, cross layered algorithm is proposed for routing and retransmission scheme. Simulation and results shows that this approach can save the overall energy consumption

Babulal, Kanojia Sindhuben; 10.5121/ijwmn.2010.2312

2010-01-01T23:59:59.000Z

262

Approximation algorithm for minimal convergecast time problem in wireless sensor networks  

Science Conference Proceedings (OSTI)

In this paper we consider how to collect data from sensors deployed in the Euclidean plane in a time-efficient way. We assume that all sensors could adjust their transmission ranges and aggregate data received from other sensors. We adopt a collision-free ... Keywords: Approximation algorithm, Convergecast, Latency, Wireless sensor networks

Weiping Shang; Pengjun Wan; Xiaodong Hu

2010-07-01T23:59:59.000Z

263

Model Checking of a Target Tracking Protocol for Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

Dense collection of tiny Sensor Nodes (SNs), equipped with a variety of sensors are able to sense events, compute and communicate the estimations to the end user, form a distributed Wireless Sensor Network (WSN). The advances in WSNs have made it plausible ... Keywords: modeling, probabilistic, sensor, target

Sania Bhatti; Jie Xu; Mohsin Memon

2010-06-01T23:59:59.000Z

264

Energy Management in Wireless Sensor Networks with Energy-hungry Sensors  

E-Print Network (OSTI)

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

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

2009-01-01T23:59:59.000Z

265

Green Modulations in Energy-Constrained Wireless Sensor Networks  

E-Print Network (OSTI)

Due to the unique characteristics of sensor devices, finding the energy-efficient modulation with a low-complexity implementation (refereed to as green modulation) poses significant challenges in the physical layer design of Wireless Sensor Networks (WSNs). Toward this goal, we present an in-depth analysis on the energy efficiency of various modulation schemes using realistic models in the IEEE 802.15.4 standard to find the optimum distance-based scheme in a WSN over Rayleigh and Rician fading channels with path-loss. We describe a proactive system model according to a flexible duty-cycling mechanism utilized in practical sensor apparatus. The present analysis includes the effect of the channel bandwidth and the active mode duration on the energy consumption of popular modulation designs. Path-loss exponent and DC-DC converter efficiency are also taken into consideration. In considering the energy efficiency and complexity, it is demonstrated that among various sinusoidal carrier-based modulations, the optimi...

Abouei, Jamshid; Pasupathy, Subbarayan

2010-01-01T23:59:59.000Z

266

Performance evaluation of low energy adaptive clustering hierarchy protocol for wireless sensor networks  

Science Conference Proceedings (OSTI)

Clustering of sensor nodes is an effective technique for achieving prolonged network lifetime, scalability, and load balancing. This paper focuses on the performance evaluation of the Low Energy Adaptive Clustering Hierarchy (LEACH) protocol that can ... Keywords: clustering, energy consumption, network lifetime, wireless sensor networks

D. A. Vidhate; A. K. Patil; S. S. Pophale

2010-02-01T23:59:59.000Z

267

An Energy Efficient Hierarchical Clustering Algorithm for Wireless Sensor Networks  

E-Print Network (OSTI)

the development of extremely small, low-cost sensors that possess sensing, signal processing and wireless the cost and size of these sensors small, they are equipped with small batteries that can store at most 1 where parameters characterizing these events are estimated. The cost of transmitting a bit is higher

Chen, Ing-Ray

268

Survey of mobile object tracking protocols in wireless sensor networks: a network-centric perspective  

Science Conference Proceedings (OSTI)

Mobile object tracking in Wireless Sensor Networks (WSNs) has gained much attention during recent years owing to its growing application potential for the ubiquitous society. In this paper, we present an investigation and taxonomy of the state-of-the-art ...

Marjan Naderan; Mehdi Dehghan; Hossein Pedram; Vesal Hakami

2012-09-01T23:59:59.000Z

269

S4: small state and small stretch routing protocol for large wireless sensor networks  

Science Conference Proceedings (OSTI)

Routing protocols for wireless sensor networks must address the challenges of reliable packet delivery at increasingly large scale and highly constrained node resources. Attempts to limit node state can result in undesirable worst-case routing performance, ...

Yun Mao; Feng Wang; Lili Qiu; Simon S. Lam; Jonathan M. Smith

2007-04-01T23:59:59.000Z

270

Acknowledgment Strategies for Efficient Asymmetric Routing in Energy Harvesting Wireless Sensor Networks.  

E-Print Network (OSTI)

??Energy conservation has been a primary concern in wireless sensor networks (WSNs), where long-term operations are often required in hard-reach environments. Due to unavoidable batteries… (more)

Gade, Tejaswi

2013-01-01T23:59:59.000Z

271

Energy-aware sparse approximation technique (EAST) for rechargeable wireless sensor networks  

Science Conference Proceedings (OSTI)

Due to non-homogeneous spread of sunlight, sensing nodes typically have non-uniform energy profiles in rechargeable Wireless Sensor Networks (WSNs). An energy-aware work load distribution is therefore necessary for good data accuracy while ensuring an ...

Rajib Rana; Wen Hu; Chun Tung Chou

2010-02-01T23:59:59.000Z

272

Secure and energy-efficient data aggregation for wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks are now in widespread use to monitor regions, detect events and acquire information. Since the deployed nodes are separated, they need to cooperatively communicate sensed data to the base station. To maximise WSN lifetime, it ...

Sofiene Ben Othman; Abdelbasset Trad; Hani Alzaid; Habib Youssef

2013-10-01T23:59:59.000Z

273

Trimming the tree: tailoring adaptive huffman coding to wireless sensor networks  

Science Conference Proceedings (OSTI)

Nodes in wireless sensor networks are generally designed to operate on a limited energy budget, and must consciously use the available charge to allow for long lifetimes. As the radio transceiver is the predominant power consumer on current node platforms, ...

Andreas Reinhardt; Delphine Christin; Matthias Hollick; Johannes Schmitt; Parag S. Mogre; Ralf Steinmetz

2010-02-01T23:59:59.000Z

274

An Energy Efficient Collaborative Framework for Event Notification in Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks consist of large number of lowpower devices equipped with RF links for communicationthat have several military, civil and environmentalmonitoring applications. The energy constraints due tolimited battery power present numerous ...

Shruti Chugh; Sagar Dharia; Dharma P. Agrawal

2003-10-01T23:59:59.000Z

275

Wireless sensor network node with asynchronous architecture and vibration harvesting micro power generator  

Science Conference Proceedings (OSTI)

This paper presents recent advances in the development of a microsystem designed to be part of a wireless sensor network. This microsystem is developed with two particular technologies: asynchronous circuits and ambient energy harvesting power generator. ...

Yasser Ammar; Aurélien Buhrig; Marcin Marzencki; Benoît Charlot; Skandar Basrour; Karine Matou; Marc Renaudin

2005-10-01T23:59:59.000Z

276

Energy-efficient geographic routing in environmentally powered wireless sensor networks  

Science Conference Proceedings (OSTI)

Current and potential applications of wireless sensor networks (WSNs) include military sensing, physical security, traffic surveillance, and environment monitoring, etc. Due to the fact that WSNs are composed of a large number of low-cost but energy ...

Kai Zeng; Wenjing Lou; Kui Ren; Patrick J. Moran

2006-10-01T23:59:59.000Z

277

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

E-Print Network (OSTI)

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

Tetteh, William Nii Adjetey

2007-01-01T23:59:59.000Z

278

The design and implementation of real-time environment monitoring systems based on wireless sensor networks  

Science Conference Proceedings (OSTI)

This research focuses on the implementation of a real-time environment monitoring system for environment detection using wireless sensor networks. The purpose of our research is to construct the system on the real-time environment with the technology ...

Kyung-Hoon Jung; Seok-Cheol Lee; Hyun-Suk Hwang; Chang-Soo Kim

2006-05-01T23:59:59.000Z

279

NetTopo: beyond simulator and visualizer for wireless sensor networks  

Science Conference Proceedings (OSTI)

Simulators are needed for testing algorithms of wireless sensor networks (WSNs) for large scale scenarios. Deploying real WSN testbed provides a more realistic testing environment, and allows users to get more accurate test results. However, deploying ...

Lei Shu; Chun Wu; Yan Zhang; Jiming Chen; Lei Wang; Manfred Hauswirth

2008-10-01T23:59:59.000Z

280

Workflow support for wireless sensor and actor networks: a position paper  

Science Conference Proceedings (OSTI)

As initial challenges of wireless sensor and actor networks (WSANs) are overcome, their application possibilities evolve. For these applications to move mainstream, efficient programming methods are required which can be used by domain experts. So far, ...

Pablo Ezequiel Guerrero; Daniel Jacobi; Alejandro Buchmann

2007-09-01T23:59:59.000Z

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


281

Development of software architecture for environmental monitoring using wireless sensor networks  

E-Print Network (OSTI)

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

Hari, Piyush

2006-01-01T23:59:59.000Z

282

Energy-efficient reservation-based medium access control protocol for wireless sensor networks  

Science Conference Proceedings (OSTI)

In Wireless Sensor Networks (WSNs), a robust and energy-efficient Medium Access Control (MAC) protocol is required for high energy efficiency in harsh operating conditions, where node and link failures are common. This paper presents the design of a ...

Mikko Kohvakka; Jukka Suhonen; Timo D. Hämäläinen; Marko Hännikäinen

2010-04-01T23:59:59.000Z

283

Substation-Wide Monitoring Through Applications of Networked Wireless Sensor Devices  

Science Conference Proceedings (OSTI)

This report presents the work performed by researchers at the University of North Carolina at Charlotte on an EPRI-sponsored project involving the development of a wireless sensor network for substation monitoring. Wireless sensor networking is an emerging technology, and its application to substation monitoring has substantial economic as well as functional benefits. This report describes the challenges faced, technologies used, design strategies developed, and lessons learned from the various experimen...

2007-12-21T23:59:59.000Z

284

Self organization of wireless sensor networks using ultra-wideband radios  

DOE Patents (OSTI)

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

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

2009-06-16T23:59:59.000Z

285

Demo: Achieving robust sensor networks through close coordination between narrow-band power line and low-power wireless communications  

Science Conference Proceedings (OSTI)

Sensor networks are increasingly available in home and industry automation applications. The use of battery-powered wireless sensor nodes eases network deployment, but the dynamic wireless medium, along with energy and bandwidth constraints, poses a ... Keywords: PLC, coordination, hybrid, robustness, wireless

Yanjun Sun; Sandeep Bhadra; Soon-Hyeok Choi; Minghua Fu; Xiaolin Lu

2011-11-01T23:59:59.000Z

286

Distributed online outlier detection in wireless sensor networks using ellipsoidal support vector machine  

Science Conference Proceedings (OSTI)

Low quality sensor data limits WSN capabilities for providing reliable real-time situation-awareness. Outlier detection is a solution to ensure the quality of sensor data. An effective and efficient outlier detection technique for WSNs not only identifies ... Keywords: Ellipsoidal support vector machine, Outlier detection, Spatial correlation, Temporal correlation, Wireless sensor networks

Yang Zhang; Nirvana Meratnia; Paul J. M. Havinga

2013-05-01T23:59:59.000Z

287

A Survey of Attacks, Security Mechanisms and Challenges in Wireless Sensor Networks  

E-Print Network (OSTI)

Wireless Sensor networks (WSN) is an emerging technology and have great potential to be employed in critical situations like battlefields and commercial applications such as building, traffic surveillance, habitat monitoring and smart homes and many more scenarios. One of the major challenges wireless sensor networks face today is security. While the deployment of sensor nodes in an unattended environment makes the networks vulnerable to a variety of potential attacks, the inherent power and memory limitations of sensor nodes makes conventional security solutions unfeasible. The sensing technology combined with processing power and wireless communication makes it profitable for being exploited in great quantity in future. The wireless communication technology also acquires various types of security threats. This paper discusses a wide variety of attacks in WSN and their classification mechanisms and different securities available to handle them including the challenges faced.

Padmavathi, Dr G

2009-01-01T23:59:59.000Z

288

Mitigating attacks against virtual coordinate based routing in wireless sensor networks  

Science Conference Proceedings (OSTI)

Virtual coordinate system (VCS) based routing provides a practical, efficient and scalable means for point-to-point routing in wireless sensor networks. Several VCS-based routing protocols have been proposed in the last few years, all assuming that nodes ... Keywords: beacon vector routing, routing, secure beacon vector routing, security, sensor network routing, virtual coordinate system

Jing Dong; Kurt E. Ackermann; Brett Bavar; Cristina Nita-Rotaru

2008-03-01T23:59:59.000Z

289

Effective-SNR estimation for wireless sensor network using Kalman filter  

Science Conference Proceedings (OSTI)

In many Wireless Sensor Network (WSN) applications, the availability of a simple yet accurate estimation of the RF channel quality is vital. However, due to measurement noise and fading effects, it is usually estimated through probe or learning based ... Keywords: Estimation, Kalman filter, Link quality, SNR, Sensor networks

Fei Qin; Xuewu Dai; John E. Mitchell

2013-05-01T23:59:59.000Z

290

Steel, cast iron and concrete: security engineering for real world wireless sensor networks  

Science Conference Proceedings (OSTI)

What are the real security issues for a wireless sensor network (WSN) intended to monitor the structural health of a suspension bridge, a subway tunnel or a water distribution pipe? Could an attack on the sensor network cause the structure to collapse? ...

Frank Stajano; Dan Cvrcek; Matt Lewis

2008-06-01T23:59:59.000Z

291

Delay of intrusion detection in wireless sensor networks  

Science Conference Proceedings (OSTI)

In this paper we consider sensor networks for intrusion detection, such that node deployment, node failures and node behavior result in coverage gaps and a fraction of disconnected nodes in an otherwise dense and well-connected network. We focus on the ... Keywords: delay, intrusion detection, percolation, sensor networks

Olivier Dousse; Christina Tavoularis; Patrick Thiran

2006-05-01T23:59:59.000Z

292

Multihop performance of cooperative preamble sampling MAC(CPS-MAC) in wireless sensor networks  

Science Conference Proceedings (OSTI)

Cooperative communication(CC) is a promising technique to combat fading in a wireless environment. In our previous work, we proposed Cooperative Preamble Sampling(CPS)-Medium Access Control(MAC) protocol which highlighted the benefits of using CC in ... Keywords: cooperative communication, medium access control, preamble sampling, reliability, wireless sensor networks

Rana Azeem M. Khan; Holger Karl

2011-07-01T23:59:59.000Z

293

Using a Wireless Sensors Network in the Sustainable Management of African Palm Oil Solid Waste  

Science Conference Proceedings (OSTI)

All human activities have an impact in the environment in which we live. Nowadays, the industrial gases emission is considered as one of the main causes for worsening greenhouse effect. The African Palm agro industry in Ecuador is no stranger to this ... Keywords: compost, production science, solid waste, wireless sensors network, wireless communication technologies

Mauro Jimenez, Alejandra Jimenez, Pablo Lozada, Santiago Jimenez, Cristhy Jimenez

2013-04-01T23:59:59.000Z

294

A robust on-demand path-key establishment framework via random key predistribution for wireless sensor networks  

Science Conference Proceedings (OSTI)

Secure communication is a necessity for some wireless sensor network (WSN) applications. However, the resource constraints of a sensor render existing cryptographic systems for traditional network systems impractical for a WSN. Random key predistribution ...

Guanfeng Li; Hui Ling; Taieb Znati; Weili Wu

2006-04-01T23:59:59.000Z

295

Constructing battery-aware virtual backbones in wireless sensor networks  

Science Conference Proceedings (OSTI)

A critical issue in battery-powered sensor networks is to construct energy efficient virtual backbones for network routing. Recent study in battery technology reveals that batteries tend to discharge more power than needed and reimburse the overdischarged ...

Chi Ma; Yuanyuan Yang; Zhenghao Zhang

2007-01-01T23:59:59.000Z

296

Distributed energy-efficient hierarchical clustering for wireless sensor networks  

Science Conference Proceedings (OSTI)

Since nodes in a sensor network have limited energy, prolonging the network lifetime and improving scalability become important. In this paper, we propose a distributed weight-based energy-efficient hierarchical clustering protocol (DWEHC). Each node ...

Ping Ding; JoAnne Holliday; Aslihan Celik

2005-06-01T23:59:59.000Z

297

A Simple Flood Forecasting Scheme Using Wireless Sensor Networks  

E-Print Network (OSTI)

This paper presents a forecasting model designed using WSNs (Wireless Sensor Networks) to predict flood in rivers using simple and fast calculations to provide real-time results and save the lives of people who may be affected by the flood. Our prediction model uses multiple variable robust linear regression which is easy to understand and simple and cost effective in implementation, is speed efficient, but has low resource utilization and yet provides real time predictions with reliable accuracy, thus having features which are desirable in any real world algorithm. Our prediction model is independent of the number of parameters, i.e. any number of parameters may be added or removed based on the on-site requirements. When the water level rises, we represent it using a polynomial whose nature is used to determine if the water level may exceed the flood line in the near future. We compare our work with a contemporary algorithm to demonstrate our improvements over it. Then we present our simulation results for t...

Seal, Victor; Maity, Shovan; Mitra, Souvik Kr; Mukherjee, Amitava; Naskar, Mrinal Kanti

2012-01-01T23:59:59.000Z

298

An autonomous wireless sensor network deployment system using mobile robots for human existence detection in case of disasters  

Science Conference Proceedings (OSTI)

This paper presents a novel approach of using autonomous mobile robots to deploy a Wireless Sensor Network (WSN) for human existence detection in case of disasters. During WSN deployment, mobile robots perform cooperative Simultaneous Localization and ... Keywords: Cooperative Simultaneous Localization and Mapping (SLAM), Human existence detection, Map merging, Sensor node deployment strategies, Wireless sensor networks

Gurkan Tuna, V. Cagri Gungor, Kayhan Gulez

2014-02-01T23:59:59.000Z

299

Trio: enabling sustainable and scalable outdoor wireless sensor network deployments  

Science Conference Proceedings (OSTI)

We present the philosophy, design, and initial evaluation of the Trio Testbed, a new outdoor sensor network deployment that consists of 557 solar-powered motes, seven gateway nodes, and a root server. The testbed covers an area of approximately 50,000 ... Keywords: detection, large-scale, long-life, sensor networks, surveillance, target tracking, testbed

Prabal Dutta; Jonathan Hui; Jaein Jeong; Sukun Kim; Cory Sharp; Jay Taneja; Gilman Tolle; Kamin Whitehouse; David Culler

2006-04-01T23:59:59.000Z

300

A two-objective evolutionary approach based on topological constraints for node localization in wireless sensor networks  

Science Conference Proceedings (OSTI)

Abstract: To know the location of nodes plays an important role in many current and envisioned wireless sensor network applications. In this framework, we consider the problem of estimating the locations of all the nodes of a network, based on noisy ... Keywords: Multiobjective evolutionary algorithms, Node localization, Range measurements, Stochastic optimization, Wireless sensor networks

Massimo Vecchio; Roberto López-Valcarce; Francesco Marcelloni

2012-07-01T23:59:59.000Z

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


301

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

E-Print Network (OSTI)

167±27 mV/g. (e) Operation of the Wireless Sensor Node: Thethe operation of the sensor and the wireless communication.Wireless Sensor Node..99 Hardware..100 Operation..

Xue, Xin

2009-01-01T23:59:59.000Z

302

Analytical evaluation of virtual infrastructures for data dissemination in wireless sensor networks with mobile sink  

Science Conference Proceedings (OSTI)

In this paper, we address the problem of data dissemination in wireless sensor networks (WSN) with mobile sink(s). In such a context, the difficulty is for sensor nodes to efficiently track the sink and report the requested data to the sink location. ... Keywords: data dissemination, mobile sink, performance analysis, rendezvous-based protocols, virtual infrastructure

Elyes Ben Hamida; Guillaume Chelius

2007-09-01T23:59:59.000Z

303

A flexible building management framework based on wireless sensor and actuator networks  

Science Conference Proceedings (OSTI)

Future buildings will be constantly monitored and managed through intelligent systems that allow having information about the building health, keeping a good comfort level for the building inhabitants and optimizing the energy spent. Despite many WSN ... Keywords: Building management systems, Domain-specific framework, Sensor programming, Wireless sensor and actuator networks

G. Fortino; A. Guerrieri; G. M. P. O'Hare; A. Ruzzelli

2012-11-01T23:59:59.000Z

304

Fusion of Decisions Transmitted Over Fading Channels in Wireless Sensor Networks  

E-Print Network (OSTI)

Fusion of Decisions Transmitted Over Fading Channels in Wireless Sensor Networks Biao Chen, Syracuse, NY 13244 Abstract Information fusion by utilizing multiple distributed sensors is studied in this work. We derive the optimal likelihood based fusion statistic for a parallel decision fusion problem

Chen, Biao

305

Distributed detection of mobile malicious node attacks in wireless sensor networks  

Science Conference Proceedings (OSTI)

In wireless sensor networks, sensor nodes are usually fixed to their locations after deployment. However, an attacker who compromises a subset of the nodes does not need to abide by the same limitation. If the attacker moves his compromised nodes to ... Keywords: Intrusion detection, Mobile malicious node, Sequential hypothesis testing

Jun-Won Ho; Matthew Wright; Sajal K. Das

2012-05-01T23:59:59.000Z

306

Grid-based sense schedule for event detection in wireless sensor networks  

Science Conference Proceedings (OSTI)

In this paper, we propose a efficient grid-based sense schedule scheme for event detection in Wireless Sensor Networks. The target environment is partitioned into grids and the sensors within each grid elect one representative to carry out the sense ...

Xianghua Hu; Xuejun Yang

2007-07-01T23:59:59.000Z

307

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

E-Print Network (OSTI)

motes for several times in Dayan Coal Mine, Inner Mongolia province. As shown in Fig.3(a), sensor nodes mote experiment in Dayan Coal Mine (b) HHMSM prototype system deployed in a lab corridor (c) HHMSMThe Design and Evaluation of a Wireless Sensor Network for Mine Safety Monitoring Xiaoguang Niu12

Huang, Changcheng

308

Energy Harvesting Enabled Wireless Sensor Networks: Energy Model and Battery Dimensioning  

E-Print Network (OSTI)

Energy Harvesting Enabled Wireless Sensor Networks: Energy Model and Battery Dimensioning Raul to energy require- ments. The Self-Powered WSN approach aims to extend the sensor node life by means of Energy Harvesting. How- ever, the low power density that these energy sources pro- vide compared

Cabellos-Aparicio, Albert

309

Designing cost-efficient wireless sensor/actuator networks for building control systems  

Science Conference Proceedings (OSTI)

A modern Building Automation System (BAS) aims to enhance the functionality of interactive control strategies leading towards energy efficiency and enhanced user comfort. Typically, it is cheaper to embed the BAS within a Wireless Sensor/Actuator Network ... Keywords: MPC, building energy, co-design, sensor

Alie El-Din Mady; Gregory Provan; Ning Wei

2012-11-01T23:59:59.000Z

310

ADV-MAC: Analysis and optimization of energy efficiency through data advertisements for wireless sensor networks  

Science Conference Proceedings (OSTI)

Several Medium Access Control (MAC) protocols have been proposed for wireless sensor networks with the objective of minimizing energy consumption. For example, Sensor-MAC (S-MAC) was proposed to reduce energy consumption by introducing a duty cycle. ... Keywords: Advertisement-based MAC, Energy efficiency, MAC layer performance optimization, MAC protocol

Surjya Ray; Ilker Demirkol; Wendi Heinzelman

2011-07-01T23:59:59.000Z

311

A virtual square grid-based coverage algorithm of redundant node for wireless sensor network  

Science Conference Proceedings (OSTI)

A virtual square grid-based coverage algorithm (VSGCA) is proposed in this paper. Each sensor node divides its sensing range into virtual square grids, if all the grids are covered by neighbors, the target node is redundant node. Compared with some previous ... Keywords: Coverage, Energy conservation, Square grid, Wireless sensor network (WSN)

Yanheng Liu; Longxiang Suo; Dayang Sun; Aimin Wang

2013-03-01T23:59:59.000Z

312

How much energy saving does topology control offer for wireless sensor networks? - A practical study  

Science Conference Proceedings (OSTI)

Topology control is an important feature for energy saving, and many topology control protocols have been proposed. Yet, little work has been done on quantitatively measuring practical performance gains that topology control achieves in a real sensor ... Keywords: Cluster, Topology control, Wireless sensor networks

Ajit Warrier; Sangjoon Park; Jeongki Min; Injong Rhee

2007-10-01T23:59:59.000Z

313

Wireless Sensor Network for Monitoring of Historic Structures under Rehabilitation  

E-Print Network (OSTI)

The use of a wireless sensor network (WSN) to monitor an historic structure under rehabilitation is the focus of this research. To thoroughly investigate the issue, two main objectives are addressed: the development of a reliable WSN tailored for use in historic structures, and the implementation of the monitoring system in the field to test the feasibility of the WSN and its applicability for structural health monitoring (SHM). Three field studies are undertaken in this research. The Frankford Church, an historic wooden church which required foundation replacement, is the first field study. Sensors monitor tilt of the church’s walls throughout construction. During the construction process, the entire floor of the church is removed and the tree stump foundations are replaced by concrete masonry unit (CMU) blocks and steel pedestals. The tilt in the walls is correlated to the construction process. St. Paul Lutheran, an historic masonry church with timber-framed roof, constitutes the second field study. In this structure, the foundations along the exterior walls are underpinned and the floors are removed and replaced with a floating concrete slab. Detected movements are also correlated to the construction efforts. The Johanniskirche, an historic masonry church with moisture problems, is the final field study case. Real-time and past measured WSN climate data is used to determine the most appropriate solution for the humid climate and resulting condensation problems in this structure. From these results, a moisture migration risk analysis protocol is created for use with a WSN to address condensation issues. The results of the tilt monitoring indicate that the approach is realistic to monitor tilt in the walls of historic structures. For future research, it is recommended to implement motes with higher tilt sensitivity. Also, further development of energy saving algorithms and energy harvesting methods will improve the WSN’s performance. Climate monitoring results show it is feasible to monitor climate conditions of historic structures. The moisture migration protocol provides a basis for further improvement. Implementation of this tool will help predict condensation events and prevent future damage to the historic structure.

Samuels, Julie Marie

2010-12-01T23:59:59.000Z

314

Poster abstract: wireless sensor network characterization - application to demand response energy pricing  

Science Conference Proceedings (OSTI)

This poster presents latency and reliability characterization of wireless sensor network as applied to an advanced building control system for demand response energy pricing. A test network provided the infrastructure to extract round trip time and packet ... Keywords: advanced building control, demand response energy pricing

Nathan Ota; Dan Hooks; Paul Wright; David Auslander; Therese Peffer

2003-11-01T23:59:59.000Z

315

Performance analysis of energy efficient asymmetric coding and modulation schemes for wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless Sensor Networks generally operate under severe energy constraints. In many cases, the networks are star connected with battery-powered nodes sensing data and sending it to a centrally-powered base station, whose energy constraints are more fore-bearing ...

Govinda M. Kamath; Yogesh Shekar; G. Abhijith Kini; U. Sripati; Muralidhar Kulkarni

2010-05-01T23:59:59.000Z

316

Ant colony optimization with fuzzy heuristic information designed for cooperative wireless sensor networks  

Science Conference Proceedings (OSTI)

Biologically inspired networking is becoming a very active area of research and development because methods from biology have attractive features such as scalability and resilience to changes in the environment. In this paper, the authors propose a cross-layer ... Keywords: ant colony optimization, cooperative modulation diversity, fuzzy heuristic information, wireless sensor networks

Marcelo Portela Sousa; Waslon Terllizzie A. Lopes; Marcelo Sampaio de Alencar

2011-10-01T23:59:59.000Z

317

Energy-efficient scheduling for multiple access in wireless sensor networks: A job scheduling method  

Science Conference Proceedings (OSTI)

With the objective to minimize the transmission energy cost, we consider the energy-efficient scheduling problem in a single hop multi-access data gathering network. We first prove by theoretical induction that transmitting with reduced powers decreases ... Keywords: Job scheduling, Multiple access channel, Polymatroid analysis, Wireless sensor networks

Xiaomao Mao; Huifang Chen; Peiliang Qiu; Zhaoyang Zhang

2010-09-01T23:59:59.000Z

318

Simple Position Estimation for Wireless Sensor Networks Toks Adebutu Lionel Sacks Ian Marshall  

E-Print Network (OSTI)

the cost, power and processing constraints of these networks. This paper presents a solution and due to the cost, power and size constraints it is not possible to equip them with a sophisticatedSimple Position Estimation for Wireless Sensor Networks Toks Adebutu Lionel Sacks Ian Marshall

Haddadi, Hamed

319

Supporting bursty traffic in wireless sensor networks through a distributed advertisement-based TDMA protocol (ATMA)  

Science Conference Proceedings (OSTI)

Nodes in wireless sensor networks (WSNs) are battery powered and oftentimes deployed in remote and hostile locations. Energy conservation is, therefore, one of the primary goals of MAC protocols designed for these networks. Contention-based protocols ... Keywords: Bursty traffic, Data advertisements, Hybrid, MAC protocol, TDMA, WSN

Surjya Ray; Ilker Demirkol; Wendi Heinzelman

2013-05-01T23:59:59.000Z

320

The role of Wireless Sensor Networks in the area of Critical Information Infrastructure Protection  

Science Conference Proceedings (OSTI)

Critical Infrastructures, such as energy, banking, and transport, are an essential pillar to the well-being of the national and international economy, security and quality of life. These infrastructures are dependent on a spectrum of highly interconnected ... Keywords: Critical Information Infrastructure Protection, Network Security, Wireless Sensor Networks

Rodrigo Roman; Cristina Alcaraz; Javier Lopez

2007-01-01T23:59:59.000Z

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


321

Energy efficient prediction clustering algorithm for multilevel heterogeneous wireless sensor networks  

E-Print Network (OSTI)

In designing wireless sensor networks, it is important to reduce energy dissipation and prolong network lifetime. In this paper, a new model with energy and monitored objects heterogeneity is proposed for heterogeneous wireless sensor networks. We put forward an energy-efficient prediction clustering algorithm, which is adaptive to the heterogeneous model. This algorithm enables the nodes to select the cluster head according to factors such as energy and communication cost, thus the nodes with higher residual energy have higher probability to become a cluster head than those with lower residual energy, so that the network energy can be dissipated uniformly. In order to reduce energy consumption when broadcasting in clustering phase and prolong network lifetime, an energy consumption prediction model is established for regular data acquisition nodes. Simulation results show that compared with current clustering algorithms, this algorithm can achieve longer sensor network lifetime, higher energy efficiency and ...

Liu, Tang; Yang, Jin; Wang, Chunli

2011-01-01T23:59:59.000Z

322

MRMAC: medium reservation MAC protocol for reducing end-to-end delay and energy consumption in wireless sensor networks  

Science Conference Proceedings (OSTI)

This letter proposes a novel medium reservation MAC protocol that reduces both end-to-end delay and energy consumption for wireless sensor networks. MRMAC reduces endto-end delay by informing the intended receiver of NPAT (next packet arrival time) and ... Keywords: asynchronous, end-to-end delay, energy consumption, medium access control, wireless sensor networks

Jaeyoung Hong; Ingook Jang; Hanjin Lee; Suho Yang; Hyunsoo Yoon

2010-07-01T23:59:59.000Z

323

Energy-Efficient Cluster Head Selection Scheme Based on Multiple Criteria Decision Making for Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

Energy efficiency is an essential issue in the applications of wireless sensor networks (WSNs) all along. Clustering with data aggregation is a significant direction to improve energy efficiency through software. The selection of cluster head (CH) is ... Keywords: Clustering, Hierarchical fuzzy integral, Multiple criteria decision making, Trapezoidal fuzzy AHP, Wireless sensor networks

Teng Gao; Ren Cheng Jin; Jin Yan Song; Tai Bing Xu; Li Ding Wang

2012-04-01T23:59:59.000Z

324

Underwater wireless sensor networks: routing issues and future challenges  

Science Conference Proceedings (OSTI)

With the advancements of acoustic modem technology that supports better data rates with reliable communications, current research focuses on algorithms those can support such technology in a better way. During the last two decades, many protocols suggested ... Keywords: acoustic communicaitons, intermettent networks, routing protocols, underwater sensor networks

Muhammad Ayaz; Azween Abdullah

2009-12-01T23:59:59.000Z

325

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

E-Print Network (OSTI)

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

Kim, Boseung; Shin, Yongtae

2009-01-01T23:59:59.000Z

326

Wireless Networking  

Science Conference Proceedings (OSTI)

Over the past decade, the world has witnessed an explosion in the development and deployment of new wireless network technologies. From cellular mobile telephony to the ubiquitous "WiFi" networks in coffee-shops and airports, to the emerging WiMAX wireless ... Keywords: Networking

Anurag Kumar; D. Manjunath; Joy Kuri

2008-03-01T23:59:59.000Z

327

Challenges: Building Scalable and Distributed Underwater Wireless Sensor Networks (UWSNs) for Aquatic Applications  

E-Print Network (OSTI)

Large-scale Underwater Wireless Sensor Network (UWSN) is a novel networking paradigm to explore the uninhabited and complex oceans. However, the characteristics of UWSNs, such as huge propagation delay, floating node mobility, and limited acoustic link capacity, are significantly different from ground-based wireless sensor networks and existing small scale Underwater Acoustic Networks (UANs). The novel networking paradigm poses inter-disciplinary challenges that will require new technological solutions. In particular, in this technical report we adopt a top-down approach to explore the research challenges in UWSN design. Along the layered protocol stack, we roughly go down from the top application layer to the bottom physical layer. At each layer, a set of new design intricacies are studied. The conclusion is that building scalable and distributed UWSNs is a challenge that must be answered by inter-disciplinary efforts of acoustic communications, signal processing and mobile acoustic network protocol design. I.

Jun-hong Cui; Jiejun Kong; Mario Gerla; Shengli Zhou

2005-01-01T23:59:59.000Z

328

Routing algorithms for large scale wireless sensor networks  

E-Print Network (OSTI)

Routing in sensor networks is a challenging issue due to inherent constraints such as power, memory, and CPU processing capabilities. In this thesis, we assume an All to All communication mode in an N × N grid sensor network. We explore routing algorithms which load balance the network without compromising the shortest paths constrain. We analyzed the Servetto method and studied two routing strategies, namely Horizontal-Vertical routing and Zigzag routing. The problem is divided into two scenarios, one being the static case (without failed nodes), and the other being the dynamic case (with failed nodes). In static network case, we derived mathematical formulae representing the maximum and minimum loads on a sensor grid, when specific routing strategies are employed. We show improvement in performance in load balancing of the grid by using Horizontal-Vertical method instead of the existing Servetto method. In the dynamic network scenario, we compare the performance of routing strategies with respect to probability of failure of nodes in the grid network. We derived the formulae for the success-ratio, in specific strategies, when nodes fail with a probability of p in a predefined source-destination pair communication. We show that the Servetto method does not perform well in both scenarios. In addition, Hybrid strategy proposed does not perform well compared to the studied strategies. We support the derived formulae and the performance of the routing strategies with extensive simulations.

Nittala Venkata, Lakshmana Prasanth

2004-12-01T23:59:59.000Z

329

Adapting dynamically neighbourhood table entry lifetime in wireless sensor networks  

E-Print Network (OSTI)

-Kassem$ and Nathalie Mitton $ Universit´e de Lyon, INRIA, INSA-Lyon, CITI, INRIA Lille-Nord Europe, Univ. Lille 1 (e.g. seaport operations and goods movements), nuclear reactor control, fire detection, land slide of each other. The initial state in a sensor network is a collection of nodes that are unaware of each

Paris-Sud XI, Université de

330

A Survey on Localization for Mobile Wireless Sensor Networks  

E-Print Network (OSTI)

. Koutsoukos Institute for Software Integrated Systems (ISIS) Department of Electrical Engineering and Computer focus on mobile sensor networks, and we have even seen the development of small-profile sensing devices as having several challenges that needed to be overcome, including connectivity, coverage, and energy

Koutsoukos, Xenofon D.

331

Round Robin Cycle for Predictions in Wireless Sensor Networks  

E-Print Network (OSTI)

{yleborgn,gbonte}@ulb.ac.be Abstract Use of prediction models in sensor networks proves to be efficient-line data analysis. These applications, for instance environmental or structural monitoring, HVAC systems undesirable consequences however follow from the use of a single prediction subset: 1) Erroneous models

Le Borgne, Yann-Aël

332

Analysis of Energy Harvesting for Vibration-Motivated Wireless Sensor Networks  

E-Print Network (OSTI)

Analysis of Energy Harvesting for Vibration-Motivated Wireless Sensor Networks Sunho Lim Dept.com Abstract-- Extracting an electrical energy from various environmental sources, called energy harvesting (or focused on the extracting an electrical energy from various environmental sources, called energy

Gelfond, Michael

333

Serial Data Fusion Using Space-filling Curves in Wireless Sensor Networks  

E-Print Network (OSTI)

Serial Data Fusion Using Space-filling Curves in Wireless Sensor Networks Swapnil Patil and Samir R-- This paper considers serial fusion as a mechanism for collaborative signal detection. The advantage fusion based on simple models . We also develop a space-filling curve-based routing mechanism for message

Nasipuri, Asis

334

Decision Fusion in MIMO Wireless Sensor Networks with Channel State Information  

E-Print Network (OSTI)

Decision Fusion in MIMO Wireless Sensor Networks with Channel State Information Domenico CIUONZO, Italy Abstract--We study channel-aware binary decision fusion over a Rayleigh flat fading shared channel with multiple antennas at the Decision Fusion Center (DFC). We derive the optimum and three sub-optimal fusion

335

RadiaLE: A framework for designing and assessing link quality estimators in wireless sensor networks  

Science Conference Proceedings (OSTI)

Stringent cost and energy constraints impose the use of low-cost and low-power radio transceivers in large-scale wireless sensor networks (WSNs). This fact, together with the harsh characteristics of the physical environment, requires a rigorous WSN ... Keywords: Channel, Experimentation, Link quality estimation, Measurements, Performance, Testbed, Traffic pattern

Nouha Baccour; Anis Koubía; Maissa Ben Jamía; Denis do Rosário; Habib Youssef; Mário Alves; Leandro B. Becker

2011-09-01T23:59:59.000Z

336

Improving security applications using indoor location systems on wireless sensor networks  

Science Conference Proceedings (OSTI)

One of the fields in which companies are investing more money is security, either personal security to avoid industrial accidents or security against intrusions. There is also the huge effort that the scientific community is doing developing all required ... Keywords: IEEE 802.15.4, ILS, indoor location systems, security applications, wireless sensor networks

Josep Paradells; Jordi Vilaseca; Jordi Casademont

2009-01-01T23:59:59.000Z

337

Wireless multimedia sensor and actor networks for the next generation power grid  

Science Conference Proceedings (OSTI)

Electrical power grid is undergoing a major renovation, to meet the power quality and power availability demands of the 21st century. The new power grid, which is also called as the smart grid, aims to integrate the recent technological advancements ... Keywords: Electrical power grid, Smart grid, Wireless multimedia sensor and actor network

Melike Erol-Kantarci; Hussein T. Mouftah

2011-06-01T23:59:59.000Z

338

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

E-Print Network (OSTI)

Design and Analysis of Micro-Solar Power Systems for Wireless Sensor Networks Jaein Jeong, Xiaofan and the power they obtain from their environment. Several micro-solar powered designs have been developed prominent designs of micro-solar power systems (Heliomote and Trio), and interpret the results to propose

Culler, David E.

339

MONSOON: A Coevolutionary Multiobjective Adaptation Framework for Dynamic Wireless Sensor Networks  

E-Print Network (OSTI)

MONSOON: A Coevolutionary Multiobjective Adaptation Framework for Dynamic Wireless Sensor Networks proposes a biologically-inspired adaptation mechanism, called MON- SOON. MONSOON is designed to support agent has its own behavior pol- icy, as a gene, which defines how to invoke its behaviors. MONSOON

Suzuki, Jun

340

Development of a wireless sensor network for collaborative agents to treat scale formation in oil pipes  

Science Conference Proceedings (OSTI)

A wireless network system (WSN) has been developed for a team of underwater Collaborative Autonomous Agents (CAAs) that are capable of repairing and locating scale formations in tanks and pipes within inaccessible environments. The design of the hardware ... Keywords: FPGA, WSN, Zigbee communication protocol, robotic development, underwater sensors

Frank Murphy; Dennis Laffey; Brendan O'Flynn; John Buckley; John Barton

2007-01-01T23:59:59.000Z

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


341

Performance evaluation of wireless sensor networks in realistic wildfire simulation scenarios  

Science Conference Proceedings (OSTI)

Forest fires lead to high amount of environmental and economic loss all over the world. Prevention and early detection efforts aim to eliminate or minimize the damage that will be caused by a fire incident. Current surveillance systems for forest fires ... Keywords: fire propagation estimation, performance evaluation, simulation, wildfire, wireless sensor networks

Sinan Isik, Mehmet Yunus Donmez, Can Tunca, Cem Ersoy

2013-11-01T23:59:59.000Z

342

Performance evaluation of wireless sensor networks for event-detection with shadowing-induced radio irregularities  

Science Conference Proceedings (OSTI)

In this paper, we study a particular application of wireless sensor networks for event-detection and tracking. In this kind of application, the transport of data is simplified, and guaranteeing a minimum number of packets at the monitoring node is the ...

Giuseppe De Marco; Tao Yang; Makoto Ikeda; Leonard Barolli

2007-12-01T23:59:59.000Z

343

Performance evaluation of wireless sensor networks for mobile event and mobile sink  

Science Conference Proceedings (OSTI)

Extending lifetime and energy efficiency are important objectives and challenges in-Wireless Sensor Networks (WSNs). In large scale WSNs, when the nodes are near to the sink they consume much more energy than the nodes far from the sink. In our previous ... Keywords: WSNs, depletion, goodput, mobile event, mobile sink

Tao Yang; Makoto Ikeda; Leonard Barolli; Fatos Xhafa; Arjan Durresi

2010-12-01T23:59:59.000Z

344

TOA-based location estimation accuracy for 3D wireless sensor networks  

Science Conference Proceedings (OSTI)

WSNs are a physical impossibility to be deployed into the area of absolute plane in the context of real-world applications. For all kinds of applications in WSNs accurate location information is crucial. In this article, we focus on 3D location accuracy ... Keywords: 3D, CRB, TOA, wireless sensor networks

Qiao-ling Du; Xiaoying Sun; Rui Ding; Zhi-hong Qian; Shu-xun Wang

2009-09-01T23:59:59.000Z

345

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

E-Print Network (OSTI)

's substation managers and engineers due to the aging nature of substation equipment and infrastructure of low-power wireless sensor networks, utility companies have also begun to investigate the potential was a contractor for the EPRI project. There were multiple utility members in the EPRI project. This paper focusses

Nasipuri, Asis

346

An Intelligent Evaluation Model Based on the LEACH Protocol in Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

This paper aims to introduce some key parameters for the tracking application in wireless sensor networks. In this work the LEACH protocol with J-sim simulation tool has been implemented, and consequently some useful trade-off analysis results among ... Keywords: J-sim, LEACH, EDCR, Evaluation Model

Ning Cao; Russell Higgs; Gregory M. P. O'Hare

2012-10-01T23:59:59.000Z

347

Swarm intelligence based routing protocol for wireless sensor networks: Survey and future directions  

Science Conference Proceedings (OSTI)

Swarm intelligence is a relatively novel field. It addresses the study of the collective behaviors of systems made by many components that coordinate using decentralized controls and self-organization. A large part of the research in swarm intelligence ... Keywords: Ant colony routing, Bee-inspired routing, Routing protocols, Swarm intelligence, Wireless sensor networks

Muhammad Saleem; Gianni A. Di Caro; Muddassar Farooq

2011-10-01T23:59:59.000Z

348

The challenges of building scalable mobile underwater wireless sensor networks for aquatic applications  

E-Print Network (OSTI)

The large-scale mobile Underwater Wireless Sensor Network (UWSN) is a novel networking paradigm to explore aqueous environments. However, the characteristics of mobile UWSNs, such as low communication bandwidth, large propagation delay, floating node mobility, and high error probability, are significantly different from ground-based wireless sensor networks. The novel networking paradigm poses interdisciplinary challenges that will require new technological solutions. In particular, in this article we adopt a top-down approach to explore the research challenges in mobile UWSN design. Along the layered protocol stack, we proceed roughly from the top application layer to the bottom physical layer. At each layer, a set of new design intricacies are studied. The conclusion is that building scalable mobile UWSNs is a challenge that must be answered by interdisciplinary efforts of acoustic communications, signal processing, and mobile acoustic network protocol design. T

Jun-hong Cui; Jiejun Kong; Mario Gerla

2006-01-01T23:59:59.000Z

349

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

E-Print Network (OSTI)

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

Ahvar, Ehsan; Piran, Mohammad Jalil

2011-01-01T23:59:59.000Z

350

Sleep and Wakeup Strategies in Solar-Powered Wireless Sensor/Mesh Networks: Performance Analysis and Optimization  

Science Conference Proceedings (OSTI)

A queuing analytical model is presented to investigate the performances of different sleep and wakeup strategies in a solar-powered wireless sensor/mesh network where a solar cell is used to charge the battery in a sensor/mesh node. While the solar radiation ... Keywords: Solar-powered wireless sensor/mesh networks, sleep and wakeup strategies, queuing analysis, system utility, game theory.

Dusit Niyato; Ekram Hossain; Afshin Fallahi

2007-02-01T23:59:59.000Z

351

Decentralized event-triggered control over wireless sensor/actuator networks  

E-Print Network (OSTI)

In recent years we have witnessed a move of the major industrial automation providers into the wireless domain. While most of these companies already offer wireless products for measurement and monitoring purposes, the ultimate goal is to be able to close feedback loops over wireless networks interconnecting sensors, computation devices, and actuators. In this paper we present a decentralized event-triggered implementation, over sensor/actuator networks, of centralized nonlinear controllers. Event-triggered control has been recently proposed as an alternative to the more traditional periodic execution of control tasks. In a typical event-triggered implementation, the control signals are kept constant until the violation of a condition on the state of the plant triggers the re-computation of the control signals. The possibility of reducing the number of re-computations, and thus of transmissions, while guaranteeing desired levels of performance makes event-triggered control very appealing in the context of sen...

Mazo, Manuel

2010-01-01T23:59:59.000Z

352

Energy Efficient Security Architecture for Wireless BioMedical Sensor Networks  

E-Print Network (OSTI)

Latest developments in VLSI, wireless communications, and biomedical sensing devices allow very small, lightweight, low power, intelligent sensing devices called biosensors. A set of these devices can be integrated into a Wireless Biomedical Sensor Network (WBSN), a new breakthrough technology used in telemedicine for monitoring the physiological condition of an individual. The biosensor nodes in WBSN has got resource limitations in terms of battery lifetime, CPU processing capability, and memory capacity. Replacement or recharging of batteries on thousands of biosensor nodes is quiet difficult or too costly. So, a key challenge in wireless biomedical sensor networks is the reduction of energy and memory consumption. Considering, the sensitivity of information in WBSN, we must provide security and patient privacy, as it is an important issue in the design of such systems. Hence this paper proposes an energy efficient security protocol for WBSN where security is provided to the physiological data, which is bei...

Mukesh, Rajeswari; Bharathi, V Subbiah

2009-01-01T23:59:59.000Z

353

Energy efficient data retrieval for networked multi-mode wireless sensors  

E-Print Network (OSTI)

This paper develops a mixed-integer programming model to maximize the total data retrieved via a wireless sensor networks, subject to the practical network and individual multi-mode sensor constraints. The model is different from existing ones in that it accounts for the buffer usage over time and the energy spikes incurred due to transitions between the operational modes. Heuristic procedures are developed for solving the NP-Hard problem. Simulation results exhibit that good performance can be achieved when the routing and MAC decisions are made based on individual sensors’ buffer content and residual energy.

Cory C. Cress

2004-01-01T23:59:59.000Z

354

A framework for wireless sensor networks management for precision viticulture and agriculture based on IEEE 1451 standard  

Science Conference Proceedings (OSTI)

Precision viticulture (PV) and precision agriculture (PA) requires the acquisition and processing of a vast collection of data coming typically from large scale and heterogeneous sensor networks. Unfortunately, sensor integration is far from being simple ... Keywords: Gateway, IEEE 1451, IEEE 802.15.4, Precision agriculture, Precision viticulture, Wireless sensor networks

Miguel A. Fernandes, Samuel G. Matos, Emanuel Peres, Carlos R. Cunha, Juan A. LóPez, P. J. S. G. Ferreira, M. J. C. S. Reis, Raul Morais

2013-07-01T23:59:59.000Z

355

WILEY WCMC SPECIAL ISSUE ON UNDERWATER SENSOR NETWORKS (INVITED) 1 Prospects and Problems of Wireless Communication for Underwater  

E-Print Network (OSTI)

WILEY WCMC SPECIAL ISSUE ON UNDERWATER SENSOR NETWORKS (INVITED) 1 Prospects and Problems of Wireless Communication for Underwater Sensor Networkss Lanbo Liu, Shengli Zhou, and Jun-Hong Cui The work ISSUE ON UNDERWATER SENSOR NETWORKS (INVITED) 2 Abstract This paper reviews the physical fundamentals

Cui, Jun-Hong

356

Comparative Investigation for Energy Consumption of Different Chipsets Based on Scheduling for Wireless Sensor Networks  

E-Print Network (OSTI)

Rapid progress in microelectromechanical system (MEMS) and radio frequency (RF) design has enabled the development of low-power, inexpensive, and network-enabled microsensors. These sensor nodes are capable of capturing various physical information, such as temperature, pressure, motion of an object, etc as well as mapping such physical characteristics of the environment to quantitative measurements. A typical wireless sensor network (WSN) consists of hundreds to thousands of such sensor nodes linked by a wireless medium. In this paper, we present a comparative investigation of energy consumption for few commercially available chipsets such as TR1001, CC1000 and CC1010 based on different scheduling methods for two types of deployment strategies. We conducted our experiment within the OMNeT++ simulator.

Monica,; 10.5121/ijcnc.2010.2511

2010-01-01T23:59:59.000Z

357

Energy Efficient Distributed Data Fusion In Multihop Wireless Sensor Networks  

E-Print Network (OSTI)

addresses a transmission energy problem for wireless sensoranalog case. The energy planning problem will be formulatedrest of this paper. Energy Planning Problem Formulation and

Huang, Yi

2010-01-01T23:59:59.000Z

358

Observing Local-Scale Variability of Near-Surface Temperature and Humidity Using a Wireless Sensor Network  

Science Conference Proceedings (OSTI)

In this paper the influence of surface type, wind speed, and other environmental conditions on near-surface air temperature, specific humidity, and surface temperature is studied. A wireless sensor network consisting of 13 low-cost meteorological ...

Katharina Lengfeld; Felix Ament

2012-01-01T23:59:59.000Z

359

Resource management algorithms for real-time wireless sensor networks with applications in cyber-physical systems  

Science Conference Proceedings (OSTI)

Wireless Sensor Networks (WSN) are playing a key role in the efficient operation of Cyber Physical Systems (CPS). They provide cost efficient solutions to current and future CPS requirements such as real-time structural awareness, faster event localization, ...

Benazir Fateh / Manimaran Govindarasu

2013-01-01T23:59:59.000Z

360

Intelligent Control via Wireless Sensor Networks for Advanced Coal Combustion Systems  

SciTech Connect

Numerical Modeling of Solid Gas Flow, System Identification for purposes of modeling and control, and Wireless Sensor and Actor Network design were pursued as part of this project. Time series input-output data was obtained from NETL's Morgantown CFB facility courtesy of Dr. Lawrence Shadle. It was run through a nonlinear kernel estimator and nonparametric models were obtained for the system. Linear and first-order nonlinear kernels were then utilized to obtain a state-space description of the system. Neural networks were trained that performed better at capturing the plant dynamics. It is possible to use these networks to find a plant model and the inversion of this model can be used to control the system. These models allow one to compare with physics based models whose parameters can then be determined by comparing them against the available data based model. On a parallel track, Dr. Kumar designed an energy-efficient and reliable transport protocol for wireless sensor and actor networks, where the sensors could be different types of wireless sensors used in CFB based coal combustion systems and actors are more powerful wireless nodes to set up a communication network while avoiding the data congestion. Dr. Ahmadi's group studied gas solid flow in a duct. It was seen that particle concentration clearly shows a preferential distribution. The particles strongly interact with the turbulence eddies and are concentrated in narrow bands that are evolving with time. It is believed that observed preferential concentration is due to the fact that these particles are flung out of eddies by centrifugal force.

Aman Behal; Sunil Kumar; Goodarz Ahmadi

2007-08-05T23:59:59.000Z

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


361

Avoiding energy holes in wireless sensor networks with nonuniform node distribution  

E-Print Network (OSTI)

Abstract—In this paper, we investigate the theoretical aspects of the nonuniform node distribution strategy used to mitigate the energy hole problem in wireless sensor networks (WSNs). We conclude that in a circular multihop sensor network (modeled as concentric coronas) with nonuniform node distribution and constant data reporting, the unbalanced energy depletion among all the nodes in the network is unavoidable. Even if the nodes in the inner coronas of the network have used up their energy simultaneously, the ones in the outermost corona may still have unused energy. This is due to the intrinsic many-to-one traffic pattern of WSNs. Nevertheless, nearly balanced energy depletion in the network is possible if the number of nodes increases in geometric progression from the outer coronas to the inner ones except the outermost one. Based on the analysis, we propose a novel nonuniform node distribution strategy to achieve nearly balanced energy depletion in the network. We regulate the number of nodes in each corona and derive the ratio between the node densities in the adjacent ði þ 1Þth and ith coronas by the strategy. Finally, we propose q-Switch Routing, a distributed shortest path routing algorithm tailored for the proposed nonuniform node distribution strategy. Extensive simulations have been performed to validate the analysis. Index Terms—Wireless sensor networks, nonuniform node distribution, energy hole problem, energy-efficient routing. 1

Xiaobing Wu; Guihai Chen; Ieee Computer Society; Sajal K. Das

2008-01-01T23:59:59.000Z

362

Evaluation of Power Conservation Algorithms in Industrial Wireless Sensor Networks.  

E-Print Network (OSTI)

??Sensors play a prominent role in the industrialized society of today and a world without sensors is inconceivable as most of the electronic applications are… (more)

Garlapati, Naveen

2012-01-01T23:59:59.000Z

363

An Energy-efficient Clock Synchronization Protocol for Wireless Sensor Networks  

E-Print Network (OSTI)

The behavior of Wireless Sensor Networks (WSN) is nowadays widely analyzed. One of the most important issues is related to their energy consumption, as this has a major impact on the network lifetime. Another important application requirement is to ensure data sensing synchronization, which leads to additional energy consumption as a high number of messages is sent and received at each node. Our proposal consists in implementing a combined synchronization protocol based on the IEEE 1588 standard that was designed for wired networks and the PBS (Pairwise Broadcast Synchronization) protocol that was designed for sensor networks, as none of them is able to provide the needed synchronization accuracy for our application on its own. The main goals of our new synchronization protocol are: to ensure the accuracy of local clocks up to a tenth of a microsecond and to provide an important energy saving. Our results obtained using NS-2 (Network Simulator) show that the performance of our solution (IEEE 1588-PBS) matches...

Albu, Roxana; Thierry, Gayraud; Pascal, Berthou

2010-01-01T23:59:59.000Z

364

H-MAC: A Hybrid MAC Protocol for Wireless Sensor Networks  

E-Print Network (OSTI)

In this paper, we propose a hybrid medium access control protocol (H-MAC) for wireless sensor networks. It is based on the IEEE 802.11's power saving mechanism (PSM) and slotted aloha, and utilizes multiple slots dynamically to improve performance. Existing MAC protocols for sensor networks reduce energy consumptions by introducing variation in an active/sleep mechanism. But they may not provide energy efficiency in varying traffic conditions as well as they did not address Quality of Service (QoS) issues. H-MAC, the propose MAC protocol maintains energy efficiency as well as QoS issues like latency, throughput, and channel utilization. Our numerical results show that H-MAC has significant improvements in QoS parameters than the existing MAC protocols for sensor networks while consuming comparable amount of energy.

Mehta, S; 10.5121/ijcnc.2010.2208

2010-01-01T23:59:59.000Z

365

Wireless Sensors Improve Data Center Efficiency  

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

foot, increase, energy savings for cooling can be realized by applying wireless sensor network (WSN) technology and using the gathered information to efficiently manage the data...

366

A novel group authentication for RuBee sensors in wireless sensor networks  

Science Conference Proceedings (OSTI)

4G, the new generation mobile communication, will be formed among heterogeneous wireless networks, which include Wi-Fi, WPAN, etc. At the beginning of 2007, IEEE developed the new short-distance transmitting standard, IEEE1902.1, also known as ...

Tin-Yu Wu; Whai-En Chen; Hung-Lin Chan

2011-06-01T23:59:59.000Z

367

Performance of wireless sensor networks under random node failures  

SciTech Connect

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

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

2011-01-28T23:59:59.000Z

368

On the design of a novel two-objective harmony search approach for distance- and connectivity-based localization in wireless sensor networks  

Science Conference Proceedings (OSTI)

In several wireless sensor network applications the availability of accurate nodes' location information is essential to make collected data meaningful. In this context, estimating the positions of all unknown-located nodes of the network based on noisy ... Keywords: Flip ambiguity, Harmony Search, Localization, Multi-objective, Wireless Sensor Networks

Diana Manjarres; Javier Del Ser; Sergio Gil-Lopez; Massimo Vecchio; Itziar Landa-Torres; Sancho Salcedo-Sanz; Roberto Lopez-Valcarce

2013-02-01T23:59:59.000Z

369

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

E-Print Network (OSTI)

??Energy harvesting sensor nodes reduce the need for post- deployment physical human interaction by using environmental power and wireless communication; however, they must adapt performance… (more)

Steck, Jamie Bradley

2009-01-01T23:59:59.000Z

370

Federal Energy Management Program: FEMP Technology Brief: Wireless Sensor  

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

Wireless Sensor Networks for Data Centers to someone by E-mail Wireless Sensor Networks for Data Centers to someone by E-mail Share Federal Energy Management Program: FEMP Technology Brief: Wireless Sensor Networks for Data Centers on Facebook Tweet about Federal Energy Management Program: FEMP Technology Brief: Wireless Sensor Networks for Data Centers on Twitter Bookmark Federal Energy Management Program: FEMP Technology Brief: Wireless Sensor Networks for Data Centers on Google Bookmark Federal Energy Management Program: FEMP Technology Brief: Wireless Sensor Networks for Data Centers on Delicious Rank Federal Energy Management Program: FEMP Technology Brief: Wireless Sensor Networks for Data Centers on Digg Find More places to share Federal Energy Management Program: FEMP Technology Brief: Wireless Sensor Networks for Data Centers on

371

Fixing Data Anomalies with Prediction Based Algorithm in Wireless Sensor Networks  

E-Print Network (OSTI)

Data inconsistencies are present in the data collected over a large wireless sensor network (WSN), usually deployed for any kind of monitoring applications. Before passing this data to some WSN applications for decision making, it is necessary to ensure that the data received are clean and accurate. In this paper, we have used a statistical tool to examine the past data to fit in a highly sophisticated prediction model i.e., ARIMA for a given sensor node and with this, the model corrects the data using forecast value if any data anomaly exists there. Another scheme is also proposed for detecting data anomaly at sink among the aggregated data in the data are received from a particular sensor node. The effectiveness of our methods are validated by data collected over a real WSN application consisting of Crossbow IRIS Motes \\cite{Crossbow:2009}.

Singh, Abhishek Kr; Mandal, Partha Sarathi

2011-01-01T23:59:59.000Z

372

Underground coal mine monitoring with wireless sensor networks - article no. 10  

Science Conference Proceedings (OSTI)

Environment monitoring in coal mines is an important application of wireless sensor networks (WSNs) that has commercial potential. We discuss the design of a Structure-Aware Self-Adaptive WSN system, SASA. By regulating the mesh sensor network deployment and formulating a collaborative mechanism based on a regular beacon strategy, SASA is able to rapidly detect structure variations caused by underground collapses. We further develop a sound and robust mechanism for efficiently handling queries under instable circumstances. A prototype is deployed in a real coal mine. We present our implementation experiences as well as the experimental results. To better evaluate the scalability and reliability of SASA, we also conduct a large-scale trace-driven simulation based on real data collected from the experiments.

Li, M.; Liu, Y.H. [Hong Kong University of Science & Technology, Hong Kong (China)

2009-03-15T23:59:59.000Z

373

Network lifetime analytical model for node-disjoint multipath routing in wireless sensor networks  

Science Conference Proceedings (OSTI)

The objective of every sensor node in a sensor network is to send the sensed data in the phenomena to a sink node. The network lifetime is maximal, when the energy consumption of each node is uniform. Many routing protocols select an optimal path to ...

Shiva G. Murthy; R. J. D. Souza; G. Varaprasad

2013-02-01T23:59:59.000Z

374

Delay-Jitter aware slot assignment for Real-Time applications in wireless multimedia ad hoc sensor networks  

Science Conference Proceedings (OSTI)

This paper presents a distributed time slot assignment algorithm which adopts TDMA as medium access control, specially suited to support applications with tight delay, jitter and throughput requirements in convergecast traffic network, e.g. wireless ... Keywords: Congestion, Delay, Jitter, QoS, Sensor network

Liqiang Tao; Fengqi Yu

2012-09-01T23:59:59.000Z

375

Thesis Title- Wireless Sensor Networking for Intelligent Transportation Systems  

E-Print Network (OSTI)

o My research area is Cyber-Physical Systems (CPS) that are computing systems interacting with physical, real environments. My research includes (i) CPS supporting the safe and efficient driving in transportation systems (e.g., road networks) in real life and (ii) CPS protecting and monitoring efficiently transportation systems (e.g., road networks and subways) and people (e.g., drivers, passengers, and pedestrians) in emergency situations (e.g., wars, accidents, and disasters). o I am leading CPS Laboratory at Sungkyunkwan University:

Advisor Prof; David H. C. Du; Prof Tian He; Advisor Prof; Yanghee Choi; Advisor Prof; Youngik Eom

2001-01-01T23:59:59.000Z

376

Wireless sensor networks: A survey on the state of the art and the 802.15.4 and ZigBee standards  

Science Conference Proceedings (OSTI)

Wireless sensor networks are an emerging technology for low-cost, unattended monitoring of a wide range of environments. Their importance has been enforced by the recent delivery of the IEEE 802.15.4 standard for the physical and MAC layers and the forthcoming ... Keywords: IEEE 802.15.4, Wireless sensor networks, ZigBee

Paolo Baronti; Prashant Pillai; Vince W. C. Chook; Stefano Chessa; Alberto Gotta; Y. Fun Hu

2007-05-01T23:59:59.000Z

377

Design, development, and performance evaluation of a low-cost, low-power wake-up radio system for wireless sensor networks  

Science Conference Proceedings (OSTI)

Energy-efficient operation is a challenge for wireless sensor networks (WSNs). A common method employed for this purpose is duty-cycled operation, which extends battery lifetime yet incurs several types of energy wastes and challenges. A promising alternative ... Keywords: Wireless sensor networks, asynchronous, low-power, wake-up receiver

Joaquim Oller, Ilker Demirkol, Jordi Casademont, Josep Paradells

2013-11-01T23:59:59.000Z

378

On the energy hole problem of nonuniform node distribution in wireless sensor networks  

E-Print Network (OSTI)

Abstract — In this paper, we investigate the theoretical aspects of the nonuniform node distribution strategy in wireless sensor networks, which aims to avoid the energy hole around the sink. We find that in a circular sensor network with a nonuniform node distribution and constant data reporting, the unbalanced energy depletion among the nodes in the whole network is unavoidable. This is because although all the inner nodes have used up their energy simultaneously, the outmost part of the network may still have energy left. In spite of this fact, a suboptimal energy efficiency among the inner parts of the network is possible if the number of nodes increases with geometric proportion from the outer parts to the inner ones. In our proposed nonuniform node distribution strategy, the ratio between the node densities of the adjacent (i+1)th corona and the ith corona is equal to (2i ? 1)/q(2i +1), where q is the geometric proportion mentioned above. We also present a routing algorithm with this node distribution strategy. Simulation experiments demonstrate that when the network lifetime has ended, the nodes in the inner parts of the network achieve nearly balanced energy depletion, and only less than 10 % of the total energy is wasted. I.

Xiaobing Wu; Guihai Chen

2006-01-01T23:59:59.000Z

379

CS 535- Wireless Network Security  

E-Print Network (OSTI)

This is a 3-credit course that focuses on security and privacy issues in wireless networks and systems. Generally the security of MAC and especially upper layers are considered in this class. This course is not intended to cover cryptography in detail, but an overview of cryptography will be given at the beginning of the course so that the students who do not know cryptography would have sufficient information to understand the rest of the course. Although the catalogue information for this course (see below) several sub areas of wireless network security, in this course we will focus on ad hoc and sensor network security. Catalogue Data: This course covers security and privacy issues in wireless networks and systems, such as cellular networks, wireless LANs, wireless PANs, mobile ad hoc networks, vehicular networks, satellite networks, wireless mesh networks, sensor networks and RFID systems. Security problems of MAC and especially upper layers will be emphasized. Attacks and proposed solutions at several layers, authentication, key distribution and key management, secure routing, selfish and malicious behaviors, and secure group communication are analyzed for applicable wireless network types. A short overview of cryptography and wireless networking principles will be given at the beginning of the course. Prerequisite: Formally there is no prerequisite for this course, but students are expected to come with undergrad level computer networks background. Moreover, computer-programming expertise is necessary. Instructor: Schedule:

Albert Levi

2008-01-01T23:59:59.000Z

380

Low-Cost, Robust, Threat-Aware Wireless Sensor Network for Assuring the Nation's Energy Infrastructure  

SciTech Connect

Eaton, in partnership with Oak Ridge National Laboratory and the Electric Power Research Institute (EPRI) has completed a project that applies a combination of wireless sensor network (WSN) technology, anticipatory theory, and a near-term value proposition based on diagnostics and process uptime to ensure the security and reliability of critical electrical power infrastructure. Representatives of several Eaton business units have been engaged to ensure a viable commercialization plan. Tennessee Valley Authority (TVA), American Electric Power (AEP), PEPCO, and Commonwealth Edison were recruited as partners to confirm and refine the requirements definition from the perspective of the utilities that actually operate the facilities to be protected. Those utilities have cooperated with on-site field tests as the project proceeds. Accomplishments of this project included: (1) the design, modeling, and simulation of the anticipatory wireless sensor network (A-WSN) that will be used to gather field information for the anticipatory application, (2) the design and implementation of hardware and software prototypes for laboratory and field experimentation, (3) stack and application integration, (4) develop installation and test plan, and (5) refinement of the commercialization plan.

Carols H. Rentel

2007-03-31T23:59:59.000Z

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


381

A survey on wireless body area networks  

Science Conference Proceedings (OSTI)

The increasing use of wireless networks and the constant miniaturization of electrical devices has empowered the development of Wireless Body Area Networks (WBANs). In these networks various sensors are attached on clothing or on the body or even implanted ... Keywords: MAC, Routing, Wireless body area networks

Benoît Latré; Bart Braem; Ingrid Moerman; Chris Blondia; Piet Demeester

2011-01-01T23:59:59.000Z

382

Medium Access Control Protocols for Wireless Sensor Networks with Energy Harvesting  

E-Print Network (OSTI)

The design of Medium Access Control (MAC) protocols for wireless sensor networks (WSNs) has been conventionally tackled by assuming battery-powered devices and by adopting the network lifetime as the main performance criterion. While WSNs operated by energy-harvesting (EH) devices are not limited by network lifetime, they pose new design challenges due to the uncertain amount of harvestable energy. Novel design criteria are thus required to capture the trade-offs between the potentially infinite network lifetime and the uncertain energy availability. This paper addresses the analysis and design of WSNs with EH devices by focusing on conventional MAC protocols, namely TDMA, Framed-ALOHA (FA) and Dynamic-FA (DFA), and by accounting for the performance trade-offs and design issues arising due to EH. A novel metric, referred to as delivery probability, is introduced to measure the capability of a MAC protocol to deliver the measure of any sensor in the network to the intended destination (or fusion center, FC). T...

Iannello, Fabio; Spagnolini, Umberto

2011-01-01T23:59:59.000Z

383

New advances in designing energy efficient time synchronization schemes for wireless sensor networks  

E-Print Network (OSTI)

Time synchronization in wireless sensor networks (WSNs) is essential and significant for maintaining data consistency, coordination, and performing other fundamental operations, such as power management, security, and localization. Energy efficiency is the main concern in designing time synchronization protocols for WSNs because of the limited and generally nonrechargeable power resources. In this dissertation, the problem of time synchronization is studied in three different aspects to achieve energy efficient time synchronization in WSNs. First, a family of novel joint clock offset and skew estimators, based on the classical two-way message exchange model, is developed for time synchronization in WSNs. The proposed joint clock offset and skew correction mechanisms significantly increase the period of time synchronization, which is a critical factor in the over-all energy consumption required for global network synchronization. Moreover, the Cramer-Rao bounds for the maximum likelihood estimators are derived under two different delay assumptions. These analytical metrics serve as good benchmarks for the experimental results thus far reported. Second, this dissertation proposes a new time synchronization protocol, called the Pairwise Broadcast Synchronization (PBS), which aims at minimizing the number of message transmissions and implicitly the energy consumption necessary for global synchronization of WSNs. A novel approach for time synchronization is adopted in PBS, where a group of sensor nodes are synchronized by only overhearing the timing messages of a pair of sensor nodes. PBS requires a far smaller number of timing messages than other well-known protocols and incurs no loss in synchronization accuracy. Moreover, for densely deployed WSNs, PBS presents significant energy saving. Finally, this dissertation introduces a novel adaptive time synchronization protocol, named the Adaptive Multi-hop Timing Synchronization (AMTS). According to the current network status, AMTS optimizes crucial network parameters considering the energy efficiency of time synchronization. AMTS exhibits significant benefits in terms of energy-efficiency, and can be applied to various types of sensor network applications having different requirements.

Noh, Kyoung Lae

2007-08-01T23:59:59.000Z

384

Time Segmentation Approach Allowing QoS and Energy Saving for Wireless Sensor Networks  

E-Print Network (OSTI)

Wireless sensor networks are conceived to monitor a certain application or physical phenomena and are supposed to function for several years without any human intervention for maintenance. Thus, the main issue in sensor networks is often to extend the lifetime of the network by reducing energy consumption. On the other hand, some applications have high priority traffic that needs to be transferred within a bounded end-to-end delay while maintaining an energy efficient behavior. We propose MaCARI, a time segmentation protocol that saves energy, improves the overall performance of the network and enables quality of service in terms of guaranteed access to the medium and end-to-end delays. This time segmentation is achieved by synchronizing the activity of nodes using a tree-based beacon propagation and allocating activity periods for each cluster of nodes. The tree-based topology is inspired from the cluster-tree proposed by the ZigBee standard. The efficiency of our protocol is proven analytically, by simulati...

Chalhoub, Gerard; Misson, Michel

2010-01-01T23:59:59.000Z

385

A system for ubiquitous fall monitoring at home via a wireless sensor network and a wearable mote  

Science Conference Proceedings (OSTI)

Accidental falls of our elderly, and physical injuries resulting, represent a major health and economic problem. Falls are the most common cause of serious injuries and are a major health threat in the stratum of older population. Early detection of ... Keywords: Accelerometer, Activities of daily living, Fall detection, Falls in the elderly, Wireless sensor network

Roberto Paoli; Francisco J. Fernández-Luque; Ginés Doménech; Félix Martínez; Juan Zapata; Ramón Ruiz

2012-04-01T23:59:59.000Z

386

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

E-Print Network (OSTI)

Energy Efficiency of MIMO Transmission Strategies in Wireless Sensor Networks Huaiyu Dai, Liang Xiao, and Quan Zhou Department of Electrical and Computer Engineering, NC State University Raleigh, NC, a virtual MIMO channel can be formed, on which recent advances in MIMO technologies can be applied. Analysis

Dai, Huaiyu

387

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

E-Print Network (OSTI)

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

Dobson, Kelly

388

Pro-Energy: A novel energy prediction model for solar and wind energy-harvesting wireless sensor networks  

Science Conference Proceedings (OSTI)

Energy harvesting is one of the most promising technologies towards the goal of perpetual operation of wireless sensor networks (WSNs). Environmentally-powered systems, however, have to deal with the variable behavior of ambient energy sources, which ... Keywords: Rechargeable sensors,Energy predictions,Energy harvesting,Environmentally-powered WSNs,Solar-powered WSNs,Wind-powered WSNs,Green WSNs,Multi-source energy harvesting

Alessandro Cammarano, Chiara Petrioli, Dora Spenza

2012-10-01T23:59:59.000Z

389

Placement of network services in a sensor network  

Science Conference Proceedings (OSTI)

An important challenge in designing a wireless sensor network is to maximise the network's lifetime. In a hierarchical cluster-based network, a key design issue is the placement of cluster heads (data loggers) such that the total power ... Keywords: beacons, cluster heads, clustering, data loggers, energy conservation, sensor localisation, service placement, wireless networks, wireless sensor networks

Jennifer Yick; Gregory Pasternack; Biswanath Mukherjee; Dipak Ghosal

2006-02-01T23:59:59.000Z

390

Overhead energy considerations for efficient routing in wireless sensor networks q  

E-Print Network (OSTI)

Energy is the most critical resource in the life of a wireless sensor node. Therefore, its usage must be optimized to maximize the network life. It is known that for higher path loss exponent values, utilizing shorter communication links reduces the transmitter energy, whenever the radio equipment has power adjustment capability. Although the transmitter energy is one of the major factors of total energy dissipation, neglecting the overhead energy could result in suboptimal energy usage. Routing algorithms should also be concerned about the overhead energy which is wasted at each hop of data transfer. In this paper, we investigate the use of multi-hop communication links and compare the amount of energy gain upon alternative routes using analytical techniques. We show that employing multi-hop links does not always result in energy gain, and try to quantify situations when it is advantageous. The analytical results are used in routing decisions and their effect in energy efficiency is validated using simulations. Moreover, we also quantify the gain achieved in terms of lifetime by considering overhead energy on power adjustable sensors for different environmental conditions. We show that the network lifetime can dramatically decrease, if the overhead energy component is neglected during routing decisions.

E. Ilker Oyman; Cem Ersoy

2004-01-01T23:59:59.000Z

391

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

E-Print Network (OSTI)

1. Energy Harvesting . . . . . . . . .2. Task Scheduling in Energy Harvesting WSNs 3. DataSensor Networks . . 2. Energy Harvesting . . . . . . . . 3.

Steck, Jamie Bradley

2009-01-01T23:59:59.000Z

392

An energy efficient RF transceiver for wireless microsensor networks  

E-Print Network (OSTI)

A wireless microsensor network consists of a group of sensor nodes that are deployed remotely and used to relay sensing data to the end-user. Due to their remote deployment, large scale wireless sensor networks require a ...

Daly, Denis Clarke

2005-01-01T23:59:59.000Z

393

Implementation Guideline for Wireless Networks and Wireless Equipment Condition Monitoring  

Science Conference Proceedings (OSTI)

The use of wireless technology in industrial settings has undergone significant development. The benefits for its use in the nuclear power industry have motivated several member utilities to undertake significant implementation efforts. This report includes guidance for the implementation of a wireless network within a nuclear power plant, with a secondary emphasis on the use of wireless sensors for asset condition monitoring.

2009-12-23T23:59:59.000Z

394

Wireless energy transmission to supplement energy harvesters in sensor network applications  

DOE Green Energy (OSTI)

In this paper we present a method for coupling wireless energy transmission with traditional energy harvesting techniques in order to power sensor nodes for structural health monitoring applications. The goal of this study is to develop a system that can be permanently embedded within civil structures without the need for on-board power sources. Wireless energy transmission is included to supplement energy harvesting techniques that rely on ambient or environmental, energy sources. This approach combines several transducer types that harvest ambient energy with wireless transmission sources, providing a robust solution that does not rely on a single energy source. Experimental results from laboratory and field experiments are presented to address duty cycle limitations of conventional energy harvesting techniques, and the advantages gained by incorporating a wireless energy transmission subsystem. Methods of increasing the efficiency, energy storage medium, target applications and the integrated use of energy harvesting sources with wireless energy transmission will be discussed.

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

2010-01-01T23:59:59.000Z

395

Adaptive control of duty cycling in energy-harvesting wireless sensor networks  

E-Print Network (OSTI)

Increasingly many wireless sensor network deployments are using harvested environmental energy to extend system lifetime. Because the temporal profiles of such energy sources exhibit great variability due to dynamic weather patterns, an important problem is designing an adaptive duty-cycling mechanism that allows sensor nodes to maintain their power supply at sufficient levels (energy neutral operation) by adapting to changing environmental conditions. Existing techniques to address this problem are minimally adaptive and assume a priori knowledge of the energy profile. While such approaches are reasonable in environments that exhibit low variance, we find that it is highly inefficient in more variable scenarios. We introduce a new technique for solving this problem based on results from adaptive control theory and show that we achieve better performance than previous approaches on a broader class of energy source data sets. Additionally, we include a tunable mechanism for reducing the variance of the node’s duty cycle over time, which is an important feature in tasks such as event monitoring. We obtain reductions in variance as great as two-thirds without compromising task performance or ability to maintain energy neutral operation.

Christopher M. Vigorito; Deepak Ganesan; Andrew G. Barto

2007-01-01T23:59:59.000Z

396

Parameter assignment for improved connectivity and security in randomly deployed wireless sensor networks via hybrid omni/uni-directional antennas  

E-Print Network (OSTI)

Conguring a network system to operate at optimal levels of performance re-quires a comprehensive understanding of the eects of a variety of system parameterson crucial metrics like connectivity and resilience to network attacks. Traditionally,omni-directional antennas have been used for communication in wireless sensor net-works. In this thesis, a hybrid communication model is presented where-in, nodes ina network are capable of both omni-directional and uni-directional communication.The eect of such a model on performance in randomly deployed wireless sensor net-works is studied, specically looking at the eect of a variety of network parameterson network performance.The work in this thesis demonstrates that, when the hybrid communication modelis employed, the probability of 100% connectivity improves by almost 90% and thatof k-connectivity improves by almost 80% even at low node densities when comparedto the traditional omni-directional model. In terms of network security, it was foundthat the hybrid approach improves network resilience to the collision attack by almost85% and the cost of launching a successful network partition attack was increased byas high as 600%. The gains in connectivity and resilience were found to improve withincreasing node densities and decreasing antenna beamwidths.

Shankar, Sonu

2008-08-01T23:59:59.000Z

397

ACOS: a precise energy-aware coverage control protocol for wireless sensor networks  

Science Conference Proceedings (OSTI)

A surveillance application requires sufficient coverage of the protected region while minimizing the energy consumption and extending the lifetime of sensor networks. This can be achieved by putting redundant sensor nodes to sleep. In this paper, we ...

Yanli Cai; Minglu Li; Wei Shu; Min-You Wu

2005-12-01T23:59:59.000Z

398

Wireless Sensors Improve Data Center Efficiency  

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

Wireless Sensor Wireless Sensor Technology Overview In most buildings, space conditions are controlled and coordinated by a building automation system (BAS). A BAS can provide temperature visualization information with dashboard displays through a person-machine interface (PMI). However, in most data centers, space conditioning is achieved with multiple, independently-operating cooling units located within the space. Unfortunately, these data centers do not have adequate auto- mation systems or visualization tools to monitor or manage these cooling units efficiently. In 2001, an emerging technology was demonstrated at University of California, Davis by Dr. Raju Pandey that "meshed" temperature sensors into a network using wireless fidelity (Wi-Fi

399

Scalable and deterministic routing with guaranteed delivery in 3d wireless sensor networks  

Science Conference Proceedings (OSTI)

Firstly, I have proposed a routing scheme for 3D wireless networks, which is based on Harmonic Volumetric Embedding (HVE). More specifically, my proposed solution is based on a unit tetrahedron cell (UTC) mesh structure. It is a one-to-one map that yields ...

Su Xia / Hongyi Wu, Miao Jin

2012-01-01T23:59:59.000Z

400

UWB-Based Localization in Wireless Sensor Networks Di Wu, Lichun Bao, Renfa Li  

E-Print Network (OSTI)

for WPANs (wireless personal area networks) using the UWB technology. We place our system in coal mine and localization algorithms can accurately compute moving object locations in coal mine environments. Keywords formation assump- tions. In this paper, we place our localization method in coal mine environments

Bao, Lichun

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


401

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

E-Print Network (OSTI)

, FIOA (Professor of Acoustics) F D J Thompson, MA, PhD, CEng, FIMechE, FIOA, FHEA (Professor of Railway (Leuven) and the 10th International Workshop on Railway Noise (Nagahama, Japan). David Herron successfully, multifunctional panels (e.g. including piezoelectric elements as sensors and/or actuators) and the use

Lynch, Jerome P.

402

Game Theoretic Distributed Energy Control in Sensor Networks  

Science Conference Proceedings (OSTI)

Standard wireless sensor networks models emphasize energy efficiency and distributed decision- making by considering unattended sensors. Wireless sensor networks are confronted with the challenges of performance and energy consumption. To prolong the ...

Jia Zeng; Chundi Mu; Min Jiang

2007-10-01T23:59:59.000Z

403

Wireless Temperature Sensors for Improved HVAC Control  

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

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

404

Application of Multizone HVAC Control Using Wireless Sensor Networks and Actuating Vent Registers  

E-Print Network (OSTI)

Most residential heating, ventilating, and air conditioning (HVAC) systems are designed to treat the home as a single zone. Single zone control consists of one thermostat, in a central area of the house that controls the HVAC operation. In a single zone system all of the vent registers are open, distributing air into all areas of the house at once. Single zone control leads to wasted energy for two reasons - all rooms being conditioned when they are not occupied, and conditioning occupied rooms, without maintaining them at the comfortable temperature for the occupants. Improved control of residential cooling and heating can be attained with a variable HVAC fan, duct, and vent system. Existing single zone systems are expensive to retrofit with the above mentioned features. Current techniques require replacing major components in the HVAC system which are both costly and time consuming, invading the user's home. An alternative to the extensive retrofit is detailed in this work. The experiments in this paper implement an automated vent louver system to solve two problems in heating homes: the problem of temperature stratification between floors and zonification between rooms, and the energy wasted to heat in unoccupied areas of the home. This paper considers the application of replacing the standard vents in each room with wireless controlled louvered vents. These vents allow for simpler, more cost effective retrofits which are also less invasive tithe end user's home. The experiments in this paper implement an automated vent louver system to reduce the energy wasted to heat unoccupied areas of the home. This test house in these experiments was a two story home. Wireless sensor-actuator networks were used to automate the test of closing off vent registers while maintaining the appropriate temperature set point in a control zone. A control zone consists of the house area where the vents are fully open. Controlling the vent registers allowed for reduced zonification between rooms on the same floor, and reduced stratification between the upstairs and downstairs. Energy savings were shown when vents were closed to heat the control zones containing the bedroom, of the office.

Watts, W.; Koplow, M.; Redfern, A.; Wright, P.

2007-01-01T23:59:59.000Z

405

Timing Synchronization and Node Localization in Wireless Sensor Networks: Efficient Estimation Approaches and Performance Bounds  

E-Print Network (OSTI)

Wireless sensor networks (WSNs) consist of a large number of sensor nodes, capable of on-board sensing and data processing, that are employed to observe some phenomenon of interest. With their desirable properties of flexible deployment, resistance to harsh environment and lower implementation cost, WSNs envisage a plethora of applications in diverse areas such as industrial process control, battle- field surveillance, health monitoring, and target localization and tracking. Much of the sensing and communication paradigm in WSNs involves ensuring power efficient transmission and finding scalable algorithms that can deliver the desired performance objectives while minimizing overall energy utilization. Since power is primarily consumed in radio transmissions delivering timing information, clock synchronization represents an indispensable requirement to boost network lifetime. This dissertation focuses on deriving efficient estimators and performance bounds for the clock parameters in a classical frequentist inference approach as well as in a Bayesian estimation framework. A unified approach to the maximum likelihood (ML) estimation of clock offset is presented for different network delay distributions. This constitutes an analytical alternative to prior works which rely on a graphical maximization of the likelihood function. In order to capture the imperfections in node oscillators, which may render a time-varying nature to the clock offset, a novel Bayesian approach to the clock offset estimation is proposed by using factor graphs. Message passing using the max-product algorithm yields an exact expression for the Bayesian inference problem. This extends the current literature to cases where the clock offset is not deterministic, but is in fact a random process. A natural extension of pairwise synchronization is to develop algorithms for the more challenging case of network-wide synchronization. Assuming exponentially distributed random delays, a network-wide clock synchronization algorithm is proposed using a factor graph representation of the network. Message passing using the max- product algorithm is adopted to derive the update rules for the proposed iterative procedure. A closed form solution is obtained for each node's belief about its clock offset at each iteration. Identifying the close connections between the problems of node localization and clock synchronization, we also address in this dissertation the problem of joint estimation of an unknown node's location and clock parameters by incorporating the effect of imperfections in node oscillators. In order to alleviate the computational complexity associated with the optimal maximum a-posteriori estimator, two iterative approaches are proposed as simpler alternatives. The first approach utilizes an Expectation-Maximization (EM) based algorithm which iteratively estimates the clock parameters and the location of the unknown node. The EM algorithm is further simplified by a non-linear processing of the data to obtain a closed form solution of the location estimation problem using the least squares (LS) approach. The performance of the estimation algorithms is benchmarked by deriving the Hybrid Cramer-Rao lower bound (HCRB) on the mean square error (MSE) of the estimators. We also derive theoretical lower bounds on the MSE of an estimator in a classical frequentist inference approach as well as in a Bayesian estimation framework when the likelihood function is an arbitrary member of the exponential family. The lower bounds not only serve to compare various estimators in our work, but can also be useful in their own right in parameter estimation theory.

Ahmad, Aitzaz 1984-

2012-12-01T23:59:59.000Z

406

Reliable networks with unreliable sensors  

Science Conference Proceedings (OSTI)

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

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

2011-01-01T23:59:59.000Z

407

Wireless Sensor Node Placement Using Hybrid Genetic Programming and Genetic Algorithms  

Science Conference Proceedings (OSTI)

The ease of use and re-configuration in a wireless network has played a key role in their widespread growth. The node deployment problem deals with an optimal placement strategy of the wireless nodes. This paper models a wireless sensor network, consisting ... Keywords: Genetic Algorithms, Genetic Programming, Hierarchical Genetic Algorithms, Node Deployment, Wireless Sensor Networks Optimization

Arpit Tripathi; Pulkit Gupta; Aditya Trivedi; Rahul Kala

2011-04-01T23:59:59.000Z

408

Opportunities of Wireless Sensors and Controls for Building Operation  

SciTech Connect

This paper characterizes commercially available wireless technologies that are suitable for use in commercial buildings. It describes two demonstration projects of wireless sensors and their integration into existing control networks, and discusses their cost per sensor, their ease of installation, and their reliability. The author will discuss the operational and energy benefits of the wireless sensors and report on the energy and cost savings estimates. The paper will conclude with some practical considerations for the installation of wireless sensors and provide a future outlook for wireless technologies in buildings applications.

Kintner-Meyer, Michael CW

2004-09-30T23:59:59.000Z

409

Decision Fusion Rules in Multi-Hop Wireless Sensor  

E-Print Network (OSTI)

Decision Fusion Rules in Multi-Hop Wireless Sensor Networks YING LIN BIAO CHEN, Member, IEEE PRAMOD K. VARSHNEY, Fellow, IEEE Syracuse University The decision fusion problem for a wireless sensor-aware decision fusion rules for resource-constrained WSNs where binary decisions from local sensors may need

Chen, Biao

410

A channel selection method to increase wireless sensor battery life  

Science Conference Proceedings (OSTI)

In most of wireless sensor networks a single externally-powered coordinator collects data from several battery-powered nodes using a simple star topology. This paper presents an innovative approach, based on an adaptive channel selection method, to reduce ... Keywords: RF power measurement, RSSI, low-power system, power aware protocols, wireless sensor network

A. Flammini; E. Sisinni; D. Marioli; A. Taroni

2006-04-01T23:59:59.000Z

411

Network coded wireless architecture  

E-Print Network (OSTI)

Wireless mesh networks promise cheap Internet access, easy deployment, and extended range. In their current form, however, these networks suffer from both limited throughput and low reliability; hence they cannot meet the ...

Katti, Sachin Rajsekhar

2008-01-01T23:59:59.000Z

412

Data muling over underwater wireless sensor networks using an autonomus underwater vehicle  

E-Print Network (OSTI)

Abstract — We present algorithms, systems, and experimental results for underwater data muling. In data muling a mobile agent interacts with static agents to upload, download, or transport data to a different physical location. We consider a system comprising an Autonomous Underwater Vehicle (AUV) and many static Underwater Sensor Nodes (USN) networked together optically and acoustically. The AUV can locate the static nodes using vision and hover above the static nodes for data upload. We describe the hardware and software architecture of this underwater system, as well as experimental data. Index Terms — Underwater sensor networks, AUV, visionbased navigation, underwater robotics.

Matthew Dunbabin; Peter Corke; Iuliu Vasilescu; Daniela Rus

2006-01-01T23:59:59.000Z

413

Stochastic binary sensor networks for noisy environments  

Science Conference Proceedings (OSTI)

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

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

2007-07-01T23:59:59.000Z

414

Energy consumption analysis of reputation-based trust management schemes of wireless sensor networks  

Science Conference Proceedings (OSTI)

Energy consumption is one of the most important parameters for evaluation of a scheme proposed for WSNs because of their resource constraint nature. Comprehensive comparative analysis of proposed reputation-based trust management schemes of WSNs from ... Keywords: reputation, sensor networks, trust evaluation, trust management

Riaz Ahmed Shaikh; Young-Koo Lee; Sungyoung Lee

2009-02-01T23:59:59.000Z

415

System architecture modeling of an UWB receiver for wireless sensor network  

Science Conference Proceedings (OSTI)

This paper presents a method for system architecture modeling of an IR-UWB (Impulse Radio Ultra WideBand) receiver for sensors networks applications. We expose the way for designing an FPGA (Field Programmable Gate Array) receiver starting from a previous ...

Aubin Lecointre; Daniela Dragomirescu; Robert Plana

2007-07-01T23:59:59.000Z

416

Energy-aware real-time communication in wireless ad-hoc micro sensors network  

Science Conference Proceedings (OSTI)

Perfect functioning not only at hardware level but also at software level design is indispensable to quench the thirst of an ideal real time communication. From software perspective, in the timeless sensitive communication context, Real-Time Operating ... Keywords: energy awareness, real-time communication, real-time operating system, sensor network

Sohail Jabbar; Abid Ali Minhas

2009-12-01T23:59:59.000Z

417

Minimizing Aggregation Latency under the Physical Interference Model in Wireless Sensor Networks  

E-Print Network (OSTI)

of today's electric power systems, making them a vital component of the smart grid. Efficient aggregation of data collected by sensors is crucial for a successful WSN-based smart grid application. Existing works the network capacity. In this paper, we propose a distributed algorithm to minimize the data aggregation

Baras, John S.

418

Underwater Sensor Networks: Applications, Advances, and Challenges  

E-Print Network (OSTI)

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

Heidemann, John

419

Sensor networks for high-resolution monitoring of volcanic activity  

Science Conference Proceedings (OSTI)

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

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

2005-10-01T23:59:59.000Z

420

Wireless home automation networks: a survey of architectures and technologies  

Science Conference Proceedings (OSTI)

Wireless home automation networks comprise wireless embedded sensors and actuators that enable monitoring and control applications for home user comfort and efficient home management. This article surveys the main current and emerging solutions that ...

Carles Gomez; Josep Paradells

2010-06-01T23:59:59.000Z

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


421

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

Science Conference Proceedings (OSTI)

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

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

2013-08-01T23:59:59.000Z

422

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

E-Print Network (OSTI)

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

Kumar, M. Jagadesh

423

Robust Semidefinite Programming Approaches for Sensor Network ...  

E-Print Network (OSTI)

May 21, 2006 ... Many applications use ad hoc wireless sensor networks for ...... Technical report, Operation Research, Stanford University, Stanford, CA,. 2005.

424

Epidemic Propagation In Overlaid Wireless Networks  

SciTech Connect

Witb tbe emergence of computer worms tbat can spread over air interfaces, wireless ad boc and sensor networks can be vulnerable to node compromises even if the deployed network is not connected to the backbone. Depending on the physical topology of the wireless network, even a single infected node can compromise the whole network. In this work, epidemic (e.g., worm) propagation in a static wireless network is studied, where a number of inCected mobile nodes are injected over the existing network. It is shown that the epidemic spread threshold and size depend on the physical topology of the underlying static wireless network as well as the mobility model employed by the infected mobile nodes. More specifically, results show that in a Cully-connected static wirelessnctwork targeted attacks are more effective, wbereas Cor a random topology random attacks can be sufficient to compromise the whole network.

Yanmaz, Evsen [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

425

MOCUS: moving object counting using ultrasonic sensor networks  

Science Conference Proceedings (OSTI)

Counting the number of moving objects in a given area has many practical applications. By investigating a series of state-of-the-art technologies, we propose a Moving Object Counting approach using Ultrasonic Sensor networks (MOCUS). ... Keywords: clustering, moving objects, object counting, sensor clusters, ultrasonic sensor networks, ultrasound, wireless networks, wireless sensor networks

Quanbin Chen; Min Gao; Jian Ma; Dian Zhang; Lionel M. Ni; Yunhao Liu

2007-12-01T23:59:59.000Z

426

Wireless Sensor Application Guideline  

Science Conference Proceedings (OSTI)

This guideline discusses the different wireless technologies in use today. Before wireless technologies were available, all the sensory connections and user interfaces in nuclear power plants had to be hard-wired. This was a limiting factor in developing a world-class condition-based maintenance (CBM) program. The wire runs were very expensive, and some equipment was in a remote or inaccessible location. With wireless technologies, adding continuous monitoring to equipment is often easy and inexpensive. ...

2002-12-29T23:59:59.000Z

427

Energy-efficient wireless sensors : fewer bits, Moore MEMS  

E-Print Network (OSTI)

Adoption of wireless sensor network (WSN) technology could enable improved efficiency across a variety of industries that include building management, agriculture, transportation, and health care. Most of the technical ...

Chen, Fred (Fred Fu-Chin)

2011-01-01T23:59:59.000Z

428

eSENSE: energy efficient stochastic sensing framework scheme for wireless sensor platforms  

Science Conference Proceedings (OSTI)

Energy is a precious resource in wireless sensor networks as sensor nodes are typically powered by batteries with high replacement cost. This paper presents eSENSE: an energy-efficient stochastic sensing framework for wireless sensor platforms. ... Keywords: energy management, scheduling, sensor networks

Haiyang Liu; Abhishek Chandra; Jaideep Srivastava

2006-04-01T23:59:59.000Z

429

Neighbor discovery in wireless networks and the coupon collector's problem  

Science Conference Proceedings (OSTI)

Neighbor discovery is one of the first steps in the initialization of a wireless ad hoc network. In this paper, we design and analyze practical algorithms for neighbor discovery in wireless networks. We first consider an ALOHA-like neighbor discovery ... Keywords: ad hoc networks, initialization, neighbor discovery, randomized algorithms, sensor networks

Sudarshan Vasudevan; Donald Towsley; Dennis Goeckel; Ramin Khalili

2009-09-01T23:59:59.000Z

430

Automatic mobility status estimation in wireless self-organised networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks and ubiquitous computing are rapidly increasing in popularity and diversity. For many applications of these systems the mobility status of devices forms part of the operating context on which self-organisation is based. This ... Keywords: Lévy Flights, Mobility models and metrics, Reinforcement learning, Self-detection of mobility, Wireless sensor networks

Richard Anthony; Mona Ghassemian

2011-03-01T23:59:59.000Z

431

Spatiotemporal multicast in sensor networks  

Science Conference Proceedings (OSTI)

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

Qingfeng Huang; Chenyang Lu; Gruia-Catalin Roman

2003-11-01T23:59:59.000Z

432

Review: Wireless sensors in agriculture and food industry-Recent development and future perspective  

Science Conference Proceedings (OSTI)

This paper presents an overview on recent development of wireless sensor technologies and standards for wireless communications as applied to wireless sensors. Examples of wireless sensors and sensor networks applied in agriculture and food production ... Keywords: Bluetooth, CAN, CDMA, GPRS, GSM, HVAC, IEEE, IT, IrDA, LAN, M2M, MEMS, NCAP, NIST, PDA, RAS, RFID, SPWAS, STIM, TEDS, TII, USDA, WINA, WLAN, WPAN, WPS, WPSRD, WiFi, ZigBee

Ning Wang; Naiqian Zhang; Maohua Wang

2006-01-01T23:59:59.000Z

433

Architecture Exploration Based on Tasks Partitioning Between Hardware, Software and Locality for a Wireless Vision Sensor Node  

Science Conference Proceedings (OSTI)

Wireless Vision Sensor Networks WVSNs is an emerging field which consists of a number of Visual Sensor Nodes VSNs. Compared to traditional sensor networks, WVSNs operates on two dimensional data, which requires high bandwidth and high energy consumption. ... Keywords: Hardware/Software Partitioning, Image Processing, Reconfigurable Architecture, Vision Sensor Node, Wireless Vision Sensor Networks

Muhammad Imran; Khursheed Khursheed; Abdul Waheed Malik; Naeem Ahmad; Mattias O'Nils; Najeem Lawal; Benny Thörnberg

2012-04-01T23:59:59.000Z

434

Optimization of Quality of Service in Wireless Sensor Networks Powered by Solar Cells  

Science Conference Proceedings (OSTI)

Sensors equipped with solar cells and rechargeable batteries are useful in many outdoor, long-lasting applications. In these sensors the cycles of energy harvesting and battery recharge need to be managed appropriately in order to avoid sensor unavailability ...

Soledad Escolar; Stefano Chessa; Jesus Carretero

2012-07-01T23:59:59.000Z

435

Sensor network localisation based on sorted RSSI quantisation  

Science Conference Proceedings (OSTI)

Range estimation is essential in many sensor network localisation algorithms. Although wireless sensor systems usually have available received signal strength indication (RSSI) readings, this information has not been effectively used in the existing ... Keywords: RSS, ad hoc computing, ad hoc networks, distance, localisation, quantisation, range estimation, received signal strength indication, sensor networks, simulation, wireless networks

Xiaoli Li; Hongchi Shi; Yi Shang

2006-07-01T23:59:59.000Z

436

Energy-efficient multi-hop medical sensor networking  

Science Conference Proceedings (OSTI)

Wireless sensor networks represent a key technology enabler for enhanced health care and assisted living systems. Recent standardization eorts to ensure compatibility among sensor network systems sold by dierent vendors have produced the IEEE 802.15.4 ... Keywords: 802.15.4, MAC, ZigBee, efficiency, efficient, energy, experiment, medical, networking, networks, routing, scheduling, sensor, system, systems, wireless

A. G. Ruzzelli; R. Jurdak; G. M.P O'Hare; P. Van Der Stok

2007-06-01T23:59:59.000Z

437

26th INTERNATIONAL CONGRESS OF THE AERONAUTICAL SCIENCES SECURITY OF WIRELESS SENSOR NETWORK ENABLED  

E-Print Network (OSTI)

** , Linda Bushnell* , Richard Robinson** *EE Department, University of Washington, Seattle, WA, USA **Boeing onboard wireless technolo- gies can be expected to be heavy. Safety con- cerns with these technologies

Poovendran, Radha

438

Networking support for underwater wireless networks.  

E-Print Network (OSTI)

?? Underwater wireless networks provide many opportunities for exploration, environmental monitoring, and military applications. Future growth of underwater networks seems promising as much of the… (more)

Kredo, Kurtis B., II

2010-01-01T23:59:59.000Z

439

Cooperative routing in wireless networks  

E-Print Network (OSTI)

In this thesis, we study the problem of energy efficiency and reliability in wireless ad-hoc networks. First, we introduce the idea of wireless cooperation advantage. We formulate the problem of finding the minimum energy ...

Khandani, Amir E. (Amir Ehsan), 1979-

2004-01-01T23:59:59.000Z

440

Insecurity of Wireless Networks  

SciTech Connect

Wireless is a powerful core technology enabling our global digital infrastructure. Wi-Fi networks are susceptible to attacks on Wired Equivalency Privacy, Wi-Fi Protected Access (WPA), and WPA2. These attack signatures can be profiled into a system that defends against such attacks on the basis of their inherent characteristics. Wi-Fi is the standard protocol for wireless networks used extensively in US critical infrastructures. Since the Wired Equivalency Privacy (WEP) security protocol was broken, the Wi-Fi Protected Access (WPA) protocol has been considered the secure alternative compatible with hardware developed for WEP. However, in November 2008, researchers developed an attack on WPA, allowing forgery of Address Resolution Protocol (ARP) packets. Subsequent enhancements have enabled ARP poisoning, cryptosystem denial of service, and man-in-the-middle attacks. Open source systems and methods (OSSM) have long been used to secure networks against such attacks. This article reviews OSSMs and the results of experimental attacks on WPA. These experiments re-created current attacks in a laboratory setting, recording both wired and wireless traffic. The article discusses methods of intrusion detection and prevention in the context of cyber physical protection of critical Internet infrastructure. The basis for this research is a specialized (and undoubtedly incomplete) taxonomy of Wi-Fi attacks and their adaptations to existing countermeasures and protocol revisions. Ultimately, this article aims to provide a clearer picture of how and why wireless protection protocols and encryption must achieve a more scientific basis for detecting and preventing such attacks.

Sheldon, Frederick T [ORNL; Weber, John Mark [Dynetics, Inc.; Yoo, Seong-Moo [University of Alabama, Huntsville; Pan, W. David [University of Alabama, Huntsville

2012-01-01T23:59:59.000Z

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


441

Minimum power allocation for cooperative routing in multihop wireless networks  

Science Conference Proceedings (OSTI)

Due to the limited energy supplies of nodes, in many applications like wireless sensor networks, energy-efficiency is crucial for extending the lifetime of these networks. We study the routing problem for multihop wireless ad hoc networks based on cooperative ...

Behrouz Maham; Are Hjørungnes

2009-03-01T23:59:59.000Z

442

Dynamic data compression in multi-hop wireless networks  

Science Conference Proceedings (OSTI)

Data compression can save energy and increase network capacity in wireless sensor networks. However, the decision of whether and when to compress data can depend upon platform hardware, topology, wireless channel conditions, and application data rates. ... Keywords: energy efficiency, stochatic network optimization

Abhishek B. Sharma; Leana Golubchik; Ramesh Govindan; Michael J. Neely

2009-06-01T23:59:59.000Z

443

Attacking Automatic Wireless Network Selection  

E-Print Network (OSTI)

Wireless 802.11 networking is becoming so prevalent that many users have become accustomed to having available wireless networks in their workplace, home, and many public places such as airports and coffee shops. Modern client operating systems implement automatic wireless network discovery and known network identification to facilitate wireless networking for the end-user. In order to implement known network discovery, client operating systems remember past wireless networks that have been joined and automatically look for these networks (referred to as Preferred or Trusted Networks) whenever the wireless network adapter is enabled. By examining these implementations in detail, we have discovered previously undisclosed vulnerabilities in the implementation of these algorithms under the two most prevalent client operating systems, Windows XP and MacOS X. With custom base station software, an attacker may cause clients within wireless radio range to associate to the attacker’s wireless network without user interaction or notification. This will occur even if the user has never connected to a wireless network before or they have an empty Preferred/Trusted Networks List. We describe these vulnerabilities as well as their implementation and impact. 1

Dino A. Dai Zovi; Shane A. Macaulay

2005-01-01T23:59:59.000Z

444

Opportunities of Wireless Sensors and Controls for Building Operation  

SciTech Connect

This paper characterizes commercially available wireless technologies that are already being used in buildings applications or that are suitable for use in commercial buildings. The discussion provides an overview of fundamental concepts of radial broadcasting systems, as well as meshed networks, and will highlight the opportunities and challenges in their integration into existing wired control networks. This paper describes two demonstration projects of wireless sensors and their integration into existing control networks, and discusses their cost per sensor, their ease of installation, and their reliability. The authors will discuss the load control strategies implemented as a consequence of the wireless sensors and report on the energy and cost savings estimates. The paper will conclude with general future prospects for wireless technologies in buildings applications.

Kintner-Meyer, Michael CW; Conant, Rob

2004-08-01T23:59:59.000Z

445

MRSD: multirate-based service differentiation for the IEEE 802.15.4 wireless sensor network  

Science Conference Proceedings (OSTI)

The IEEE 802.15.4 standard has no provisions for rate sensitive applications because of its ability to operate in pure CSMA/CA or TDMA modes. Some operating scenarios for rate-sensitive applications arise when one considers wireless video surveillance ...

Chewoo Na; Yaling Yang

2009-11-01T23:59:59.000Z

446

Modulation-Aware Energy Balancing in Hierarchical Wireless Sensor Networks1  

E-Print Network (OSTI)

Approach to Dynamic Energy Minimization in Wireless Transceivers", A. Iranli, H. Fatemi, M. Pedram, Int;17 Optimization problem · Minimize total energy consumption for a link ­ (A) Minimize energy at transmitter ­ (B of SNR and mod. level Vector upper bound on overall Energy consumption #12;20 Some performance results

Pedram, Massoud

447

An application of the wireless sensor network technology for foehn monitoring in real time  

Science Conference Proceedings (OSTI)

Foehn is one of the common climate phenomena in Taiwan because of geographical factors. The foehn is associated with high temperature and low humidity, which often leads to plant death and even causes serious forest fires. The natural disaster relief ... Keywords: environmental parameter monitoring, foehn monitoring, wireless communication

Chih-Yang Tsai; Yu-Fan Chen; Hsu-Cheng Lu; Chi-Hung Lin; Jyh-Cherng Shieh; Chung-Wei Yen; Jeng-Lung Huang; Yung-Shun Lin; Ching-Lu Hsieh; Joe-Air Jiang

2011-09-01T23:59:59.000Z

448

Energy-Efficient Forwarding Strategies for Geographic Routing in Lossy Wireless Sensor Networks  

E-Print Network (OSTI)

no harvesting energy Environment Aware DC Step-Up Converterand solar energy info with host sensor node DC Step-Up

Karim Seada; Marco Zuniga; Ahmed Helmy; Bhaskar Krishnamachari

2004-01-01T23:59:59.000Z

449

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

E-Print Network (OSTI)

resistance temperature detection (RTD) (2) thermistors (3)thermocouples. RTD sensors (also called the resistancecircuit, the performance of RTD temperature transduction can

Xue, Xin

2009-01-01T23:59:59.000Z

450

NodeMD: diagnosing node-level faults in remote wireless sensor systems  

Science Conference Proceedings (OSTI)

Software failures in wireless sensor systems are notoriously difficult to debug. Resource constraints in wireless deployments substantially restrict visibility into the root causes of node-level system and application faults. At the same time, the high ... Keywords: deployment, diagnosis, software fault, wireless sensor networks

Veljko Krunic; Eric Trumpler; Richard Han

2007-06-01T23:59:59.000Z

451

Monitoring quality optimization in wireless sensor networks with a mobile sink  

Science Conference Proceedings (OSTI)

The exploitation of sink mobility has been proven to improve various network performance significantly, including network lifetime, data delivery latency, network connectivity, and so on. In this paper we consider a novel network model consisting of ... Keywords: distance-constrained tour, energy efficiency, mobile sink, monitoring quality

Xu Xu; Weifa Liang

2011-10-01T23:59:59.000Z

452

Energy-efficient space-time coded cooperative routing in multihop wireless networks  

Science Conference Proceedings (OSTI)

Due to the limited energy supplies of nodes in many applications like wireless sensor networks, energy efficiency is crucial for extending the lifetime of these networks. This paper addresses the routing problem for outage-restricted multihop wireless ...

Behrouz Maham; Ravi Narasimhan; Are Hjørungnes

2009-11-01T23:59:59.000Z

453

SensorScope: Application-specific sensor network for environmental monitoring  

Science Conference Proceedings (OSTI)

SensorScope is a turnkey solution for environmental monitoring systems, based on a wireless sensor network and resulting from a collaboration between environmental and network researchers. Given the interest in climate change, environmental monitoring ... Keywords: Architecture, deployment, environmental monitoring, implementation, wireless sensor network

François Ingelrest; Guillermo Barrenetxea; Gunnar Schaefer; Martin Vetterli; Olivier Couach; Marc Parlange

2010-02-01T23:59:59.000Z

454

Ultrahigh-Temperature Distributed Wireless Sensors  

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

Ultrahigh-Temperature Distributed Wireless Sensors Description The U.S. Department of Energy (DOE) National Energy Technology Laboratory (NETL) is working in cooperation with Prime...

455

Energy-efficient routing protocol depending on dynamic message communication over wireless sensor network  

Science Conference Proceedings (OSTI)

We propose an energy-efficient routing mechanism for maintaining uniform distribution of each sensor's energy through shorter paths. We define two metrics – energy level and vector information. The energy level describes how much the energy ...

KwangKyum Lee; Yongtae Shin; Ara Khil

2006-12-01T23:59:59.000Z

456

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

E-Print Network (OSTI)

Monfray, Innovative thermal energy harvesting technologies for autonomous sensors, STMicroelectronics, France 11:50-12:10 A. Giuffrida, A novel approach for energy harvesting low frequency piezoelectric energy harvester designed for heart beat vibration

Shihada, Basem

457

A brief survey of self-organization in wireless sensor networks  

Science Conference Proceedings (OSTI)

... with the costly techniques in use today. ... a network generates interference and wastes energy. ... ed.). Evolutionary Computation—The Fossil Record. ...

2007-12-06T23:59:59.000Z

458

Design and simulation on data-forwarding security in sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks are the emerging information technology for monitoring equipment and ambient conditions of production lines in modern factories. A salient feature of wireless sensor networks is that nodes can relay sensing data to a factory ... Keywords: SQF, WSNs, energy consumption, industrial security, modelling, network security, packet delivery latency, reliability, routing, secure quasimultipath forwarding, wireless sensor networks

Men Long; Chwan-Hwa 'John' Wu

2009-10-01T23:59:59.000Z

459

Fountain Codes Based Distributed Storage Algorithms for Large-Scale Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

We consider large-scale networks with n nodes, out of which k are in possession, (e.g., have sensed or collected in some other way) k information packets. In the scenarios in which network nodes are vulnerable because of, for example, limited energy ...

Salah A. Aly; Zhenning Kong; Emina Soljanin

2008-04-01T23:59:59.000Z

460

An error-free data collection method exploiting hierarchical physical models of wireless sensor networks  

Science Conference Proceedings (OSTI)

Various studies have shown that a substantial portion of the data gathered in real-world sensing applications is faulty. Most existing fault-detection approaches are off-line, centralised, and rely heavily on expert domain knowledge which may not always ... Keywords: adaptive design, physical model, robust learning, stationarity of sensor data

Lei Fang, Simon Dobson, Danny Hudges

2013-11-01T23:59:59.000Z

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


461

Program on Technology Innovation: Wireless Mesh Sensor Networks for Fossil Plant Monitoring  

Science Conference Proceedings (OSTI)

In a competitive environment, power plants must operate under reduced operations and maintenance budgets while maintaining high reliability and availability. Early detection of equipment faults and subsequent maintenance actions can help reduce costs while maximizing availability. However, detection of equipment faults and subsequent troubleshooting often require information in addition to that provided by traditional process instrumentation. Traditional wired sensors are not cost-effective additions in ...

2009-03-31T23:59:59.000Z

462

Wireless Sensors for Data Centers  

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

Proving Ground Proving Ground Wireless Sensors for Data Centers Kevin Powell |May 23 2012 | FEMP Technology Deployment Working Group 9,624 Owned and Leased Assets 30% Metered Energy Reduction, by 2015 NET ZERO In New Construction and Major Remodels, by 2030 EISA 2007 GSA's Green Proving Ground The Green Proving Ground aims to leverage innovative technologies to accelerate GSA's sustainability goals. Program Focus: Identify, test and evaluate innovative technologies to: * Drive innovation in environmental performance in federal buildings * Help lead market transformation through deployment of new technologies. * Reduce GSA operational costs How Does It Work? Green Proving Ground

463

Wireless Sensors for Data Centers  

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

Proving Ground Proving Ground Wireless Sensors for Data Centers Kevin Powell |May 23 2012 | FEMP Technology Deployment Working Group 9,624 Owned and Leased Assets 30% Metered Energy Reduction, by 2015 NET ZERO In New Construction and Major Remodels, by 2030 EISA 2007 GSA's Green Proving Ground The Green Proving Ground aims to leverage innovative technologies to accelerate GSA's sustainability goals. Program Focus: Identify, test and evaluate innovative technologies to: * Drive innovation in environmental performance in federal buildings * Help lead market transformation through deployment of new technologies. * Reduce GSA operational costs How Does It Work? Green Proving Ground

464

A framework for energy consumption based design space exploration for wireless sensor nodes  

Science Conference Proceedings (OSTI)

In wireless sensor networks due to the small transmission distances involved, the computation energy along with the radio energy determines the battery life. Energy consumption of error control codes (ECCs) is a complex function of the energy consumption ... Keywords: computation-radio energy trade-off, energy models, error control codes, low energy, wireless sensor networks

Sonali Chouhan; M. Balakrishnan; Ranjan Bose

2008-08-01T23:59:59.000Z

465

Solar powered sensor network design and experimentation  

Science Conference Proceedings (OSTI)

As battery capacities are a key limiting factor of wireless sensor networks, harvesting energy from the environment is very attractive. For outdoor applications, solar power seems to be the best suited energy source. However, the amount of energy delivered ...

Daniela Krüger; Carsten Buschmann; Stefan Fischer

2009-09-01T23:59:59.000Z

466

Sensor Networks in Pervasive Healthcare Computing  

Science Conference Proceedings (OSTI)

Advances in wireless sensor networking (WSN) have opened up new opportunities in distributed informatics. Pervasive healthcare, based on WSN, is an emerging technology area with great potential of future applicability. Small size devices capable of sensing, ...

Zhilbert Tafa

2010-07-01T23:59:59.000Z

467

Securing a Wireless Networked Control System Using Information Fusion  

Science Conference Proceedings (OSTI)

Security of a wireless sensor network practically governs its usability in several applications. Especially, in applications like Industrial control systems which use NCS and SCADA systems, the security affects the stability of the system. We propose ...

Brijesh Kashyap Chejerla, Sanjay Madria

2012-10-01T23:59:59.000Z

468

Selective reprogramming of mobile sensor networks through social community detection  

Science Conference Proceedings (OSTI)

We target application domains where the behavior of animals or humans is monitored using wireless sensor network (WSN) devices. The code on these devices is updated frequently, as scientists acquire in-field data and refine their hypotheses. Wireless ...

Bence Pásztor; Luca Mottola; Cecilia Mascolo; Gian Pietro Picco; Stephen Ellwood; David Macdonald

2010-02-01T23:59:59.000Z

469

Trust-Assisted Anomaly Detection and Localization in Wireless Sensor Networks  

E-Print Network (OSTI)

for better bandwidth and energy efficiency. The trustworthiness of network links is utilized to design for many real-world applications such as critical infrastructure monitoring, scientific data gathering. Distributed approaches address this issue by encour- aging local decision making: for example, nodes can rely

Baras, John S.

470

Aeroelastic Flutter Vibration Energy Harvesting The research seeks to develop novel energy harvesting devices for powering wireless sensors or other  

E-Print Network (OSTI)

Task scheduling in an energy harvesting WSN for Structural Health Monitoring Literature Survey for an energy harvesting wireless sensor network (WSN). The adoption of wireless sensor networks in advanced by the usage of wireless communication and environmental energy harvesters (EH) [3]. However, adopting an EH

Hui, Chung-Yuen

471

PIP: A multichannel, TDMA-based MAC for efficient and scalable bulk transfer in sensor networks  

Science Conference Proceedings (OSTI)

In this article, we consider the goal of achieving high throughput in a wireless sensor network. Our work is set in the context of those wireless sensor network applications which collect and transfer bulk data. We present PIP (Packets in Pipe), a MAC ... Keywords: Bulk data transfer, MAC, TDMA, pipelining, throughput optimization, wireless sensor network applications

Vijay Gabale; Kameswari Chebrolu; Bhaskaran Raman; Sagar Bijwe

2012-09-01T23:59:59.000Z

472

Proactive mobile wireless networks : an infrastructureless wireless network architecture for delay-sensitive applications  

E-Print Network (OSTI)

Infrastructureless wireless networks are an important class of wireless networks that is best suited for scenarios where there is temporary and localized telecommunication demand. Such networks consist of wireless devices ...

Dai, Lillian Lei, 1978-

2008-01-01T23:59:59.000Z

473

Model-based compression in wireless ad hoc networks  

Science Conference Proceedings (OSTI)

We present a technique for compression of shortest paths routing tables for wireless ad hoc networks. The main characteristic of such networks is that geographic location of nodes determines network topology. As opposed to encoding individual node locations, ... Keywords: compression, modeling, routing protocols, routing tables, sensor networks, trajectory

Milenko Drinic; Darko Kirovski; Miodrag Potkonjak

2003-11-01T23:59:59.000Z

474

Fault reconnaissance agent for sensor networks  

Science Conference Proceedings (OSTI)

One of the key prerequisite for a scalable, effective and efficient sensor network is the utilization of low-cost, low-overhead and high-resilient fault-inference techniques. To this end, we propose an intelligent agent system with a problem solving ... Keywords: Management, expectation maximization algorithm, intelligent agents, wireless sensor networks

Elhadi M. Shakshuki; Xinyu Xing; Tarek R. Sheltami

2010-08-01T23:59:59.000Z

475

Large wireless networks : fundamental limits and design issues  

E-Print Network (OSTI)

design and operation of wireless networks? Unfortunately notWireless Communications: Scaling Laws and Optimal Operation”,

Minero, Paolo

2010-01-01T23:59:59.000Z

476

Connectivity problem in wireless networks  

Science Conference Proceedings (OSTI)

We study the complexity of the following connectivity problem in wireless networks: for a given placement of n nodes in the plane, the goal is to compute a channel and power assignment that forms strongly connected communication structure spanning ...

Dariusz R. Kowalski; Mariusz A. Rokicki

2010-09-01T23:59:59.000Z

477

Supporting Concurrent Task Deployment Wireless Sensor Networks* S. Guo, C. Fan, and T.D.C. Little  

E-Print Network (OSTI)

-specialist and for it to subsequently discover and associate with its corresponding HVAC control loop. We claim that this involves are required or when the mission of the system changes. We consider a technique that is intended to support multiple concurrent missions by the system by exploiting available resources of the sensor network

Little, Thomas

478

VMSTAR: synthesizing scalable runtime environments for sensor networks  

Science Conference Proceedings (OSTI)

Sensor networks are being deployed at massive scales, containing a range of platforms. Programming paradigms for sensor networks should meet the attendant challenges of scale and heterogeneity. Researchers have considered virtual machines as a means ... Keywords: network reprogramming, operating systems, programming languages, software synthesis, virtual machines, wireless sensor networks

Joel Koshy; Raju Pandey

2005-11-01T23:59:59.000Z

479

Deployment guidelines for achieving maximum lifetime and avoiding energy holes in sensor network  

Science Conference Proceedings (OSTI)

The demand for maximum network lifetime in many mission-critical applications of wireless sensor networks motivates the great significance to deploy as few sensors as possible to achieve the expected network performance. In this paper, we first characterize ... Keywords: Adjustable transmission range, Energy-hole, Network lifetime, Node deployment, Wireless sensor network

Anfeng Liu; Xin Jin; Guohua Cui; Zhigang Chen

2013-05-01T23:59:59.000Z

480

Utilizing Renewable Energy in Cluster-based Sensor Networks  

E-Print Network (OSTI)

Energy conservation plays a crucial in wireless sensor networks since such networks are designed to be placed in hostile and non-accessible areas. While battery-driven sensors will run out of battery sooner or later, the use of renewable energy sources such as solar power or gravitation may extend the lifetime of a sensor. We propose to utilize solar power in wireless sensor networks and extend LEACH a well-known cluster-based protocol for sensor networks to become solar-aware. The presented simulation results show that making LEACH solar-aware significantly extends the lifetime of sensor networks.

Thiemo Voigt; Hartmut Ritter; Jochen Schiller

2003-01-01T23:59:59.000Z

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


481

Review: Reinforcement learning for context awareness and intelligence in wireless networks: Review, new features and open issues  

Science Conference Proceedings (OSTI)

In wireless networks, context awareness and intelligence are capabilities that enable each host to observe, learn, and respond to its complex and dynamic operating environment in an efficient manner. These capabilities contrast with traditional approaches ... Keywords: Cognitive radio networks, Context awareness, Intelligence, Mobile ad hoc networks, Reinforcement learning, Wireless networks, Wireless sensor networks

Kok-Lim Alvin Yau; Peter Komisarczuk; Paul D. Teal

2012-01-01T23:59:59.000Z

482

Design considerations of sub-mW indoor light energy harvesting for wireless sensor systems  

Science Conference Proceedings (OSTI)

For most wireless sensor networks, one common and major bottleneck is the limited battery lifetime. The frequent maintenance efforts associated with battery replacement significantly increase the system operational and logistics cost. Unnoticed power ... Keywords: Design consideration, PV cells wireless sensor node, energy harvesting, indoor light illuminance, maximum power point tracking, supercapacitor

W. S. Wang; T. O'Donnell; N. Wang; M. Hayes; B. O'Flynn; C. O'Mathuna

2010-06-01T23:59:59.000Z

483

Control-theoretic utility maximization in multihop wireless networks under mission dynamics  

Science Conference Proceedings (OSTI)

Both bandwidth and energy become important resource constraints when multihop wireless networks are used to transport high-data-rate traffic for a moderately long duration. In such networks, it is important to control the traffic rates to not only conform ... Keywords: bandwidth- and energy-constrained networks, network lifetime, utility optimization, wireless sensor network (WSN)

Sharanya Eswaran; Archan Misra; Thomas F. La Porta

2012-08-01T23:59:59.000Z

484

Selecting forwarding neighbors in wireless ad hoc networks  

E-Print Network (OSTI)

networking operation in wireless ad hoc networks. It isa fundamental operation which is frequent in wireless ad hoc

Calinescu, G; Mandoiu, Ion I; Wan, P J; Zelikovsky, A Z

2004-01-01T23:59:59.000Z

485

QOMB: A wireless network emulation testbed  

Science Conference Proceedings (OSTI)

In this paper we present QOMB, a testbed we designed and implemented for the evaluation of wireless network systems, protocols and applications. The testbed uses the wireless network emulation set of tools QOMET so as to reproduce in a wired network, ... Keywords: emulation, real-time, testbed, wireless networks

Razvan Beuran; Lan Tien Nguyen; Toshiyuki Miyachi; Junya Nakata; Ken-ichi Chinen; Yasuo Tan; Yoichi Shinoda

2009-11-01T23:59:59.000Z

486

Adaptive Scheduling in Ad Hoc and Cellular Wireless Networks  

E-Print Network (OSTI)

Under unicast operations in wireless cellular networks, wetransmission operations in cellular wireless networks. Underoperation for failovers under heterogeneous traffic loading conditions in wireless

Tan, Choo Chin

2013-01-01T23:59:59.000Z

487

Energy comparison and optimization of wireless body-area network technologies  

Science Conference Proceedings (OSTI)

Wireless body-area networks (WBANs) have revolutionized the way mobile and wearable computers communicate with their users and I/O devices. We investigate an energy-efficient wireless device driver for low-duty peripherals, sensors and other I/O devices ... Keywords: energy-efficient design, power consumption, wireless body-area network

Le Yan; Lin Zhong; Niraj K. Jha

2007-06-01T23:59:59.000Z

488

Mutual Exclusion on Multihop, Mobile Wireless Networks  

Science Conference Proceedings (OSTI)

The system considered in this paper is a mobile wireless network, commonly known as an ad hoc network. Mobile nodes in this dynamic topology function both as processors and routers to provide communication between nodes which are not within wireless ...

Jennifer Walter; Savita Kini

1997-12-01T23:59:59.000Z

489

Distributed computation in wireless and dynamic networks  

E-Print Network (OSTI)

Today's wireless networks tend to be centralized: they are organized around a fixed central backbone such as a network of cellular towers or wireless access points. However, as mobile computing devices continue to shrink ...

Oshman, Rotei

2012-01-01T23:59:59.000Z

490

Cybermussels: a biological sensor network using freshwater mussels  

Science Conference Proceedings (OSTI)

In this paper, we describe our ongoing work on designing an underwater sensor network for monitoring the ecosystem of the Mississippi river using freshwater mussels as biological sensors. One of the most extensive manifestations of anthropogenic mismanagement ... Keywords: bio-sensor, freshwater mussel, wireless sensor network

Henry E. Baidoo-Williams; Jeremy S. Bril; Mehmed B. Diken; Jonathan Durst; Josiah McClurg; Soura Dasgupta; Craig L. Just; Anton Kruger; Raghuraman Mudumbai; Teresa Newton

2012-04-01T23:59:59.000Z

491

A platform for wireless networked transducers  

Science Conference Proceedings (OSTI)

As computers, sensors, and wireless communication have become smaller, cheaper, and more sophisticated, wireless transducer platforms have become a focus of research and commercial interest. This report describes an investigation into such platforms. ...

Bernard Horan; Bill Bush; John Nolan; David Cleal

2007-03-01T23:59:59.000Z

492

Ultra-wideband radar sensors and networks  

DOE Patents (OSTI)

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

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

2013-08-06T23:59:59.000Z

493

Hybrid trust and reputation management for sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks are characterised by the distributed nature of their operation and the resource constraints on the nodes. Trust management schemes that are targeted at sensor networks need to be lightweight in terms of computational and communication ... Keywords: Reputation management, Sensor networks, Trust establishment

Efthimia Aivaloglou; Stefanos Gritzalis

2010-07-01T23:59:59.000Z

494

UWB-based sensor networks for localization in mining environments  

Science Conference Proceedings (OSTI)

Wireless sensor networks (WSN) have attached a great attention in the last few years. WSN offer several advantages over the traditional sensor networks, such as elimination of costly wires, security and larger area coverage. In the last few years, there ... Keywords: Localization, Nonlinear optimization, Sensor networks, ToA estimation, UWB ranging, Underground environments

Abdellah Chehri; Paul Fortier; Pierre Martin Tardif

2009-07-01T23:59:59.000Z

495

Hierarchical Routing over Dynamic Wireless Networks  

E-Print Network (OSTI)

Wireless network topologies change over time and maintaining routes requires frequent updates. Updates are costly in terms of consuming throughput available for data transmission, which is precious in wireless networks. In this paper, we ask whether there exist low-overhead schemes that produce low-stretch routes. This is studied by using the underlying geometric properties of the connectivity graph in wireless networks.

Tschopp, Dominique; Grossglauser, Matthias

2009-01-01T23:59:59.000Z

496

New and Underutilized Technology: Wireless Temperature Sensors | Department  

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

Wireless Temperature Sensors Wireless Temperature Sensors New and Underutilized Technology: Wireless Temperature Sensors October 4, 2013 - 4:45pm Addthis The following information outlines key deployment considerations for wireless temperature sensors within the Federal sector. Benefits Wireless thermostats are connected into a building automation system. Ease of adding temperature sensors in more zones allows for greater spatial resolution of zone temperatures, increasing confidence in control improvements through thermostat reset. Application Wireless temperature settings are applicable in most building categories. Key Factors for Deployment Ease of moving thermostats increases diagnostic capabilities in checking existing hard-wired thermostats. Ranking Criteria Federal energy savings, cost-effectiveness, and probability of success are

497

Broadcasting and transmission coordination for ad hoc and sensor networks  

Science Conference Proceedings (OSTI)

This thesis studies the performance benefit of coordination in wireless sensor networks (WSNs) and ad hoc networks (AHNs). WSNs are often comprised of a large number of inexpensive nodes with short battery life and limited communication and processing ...

Ananth V. Kini / Steven P. Weber

2008-01-01T23:59:59.000Z

498

Steam distribution and energy delivery optimization using wireless sensors  

Science Conference Proceedings (OSTI)

The Extreme Measurement Communications Center at Oak Ridge National Laboratory (ORNL) explores the deployment of a wireless sensor system with a real-time measurement-based energy efficiency optimization framework in the ORNL campus. With particular focus on the 12-mile long steam distribution network in our campus, we propose an integrated system-level approach to optimize the energy delivery within the steam distribution system. We address the goal of achieving significant energy-saving in steam lines by monitoring and acting on leaking steam valves/traps. Our approach leverages an integrated wireless sensor and real-time monitoring capabilities. We make assessments on the real-time status of the distribution system by mounting acoustic sensors on the steam pipes/traps/valves and observe the state measurements of these sensors. Our assessments are based on analysis of the wireless sensor measurements. We describe Fourier-spectrum based algorithms that interpret acoustic vibration sensor data to characterize flows and classify the steam system status. We are able to present the sensor readings, steam flow, steam trap status and the assessed alerts as an interactive overlay within a web-based Google Earth geographic platform that enables decision makers to take remedial action. We believe our demonstration serves as an instantiation of a platform that extends implementation to include newer modalities to manage water flow, sewage and energy consumption.

Olama, Mohammed M [ORNL; Allgood, Glenn O [ORNL; Kuruganti, Phani Teja [ORNL; Sukumar, Sreenivas R [ORNL; Djouadi, Seddik M [ORNL; Lake, Joe E [ORNL

2011-01-01T23:59:59.000Z

499

Effective algorithms and protocols for wireless networking: a topological approach  

E-Print Network (OSTI)

Much research has been done on wireless sensor networks. However, most protocols and algorithms for such networks are based on the ideal model Unit Disk Graph (UDG) model or do not assume any model. Furthermore, many results assume the knowledge of location information of the network. In practice, sensor networks often deviate from the UDG model significantly. It is not uncommon to observe stable long links that are more than five times longer than unstable short links in real wireless networks. A more general network model, the quasi unit-disk graph (quasi-UDG) model, captures much better the characteristics of wireless networks. However, the understanding of the properties of general quasi-UDGs has been very limited, which is impeding the design of key network protocols and algorithms. In this dissertation we study the properties for general wireless sensor networks and develop new topological/geometrical techniques for wireless sensor networking. We assume neither the ideal UDG model nor the location information of the nodes. Instead we work on the more general quasi-UDG model and focus on figuring out the relationship between the geometrical properties and the topological properties of wireless sensor networks. Based on such relationships we develop algorithms that can compute useful substructures (planar subnetworks, boundaries, etc.). We also present direct applications of the properties and substructures we constructed including routing, data storage, topology discovery, etc. We prove that wireless networks based on quasi-UDG model exhibit nice properties like separabilities, existences of constant stretch backbones, etc. We develop efficient algorithms that can obtain relatively dense planar subnetworks for wireless sensor networks. We also present efficient routing protocols and balanced data storage scheme that supports ranged queries. We present algorithmic results that can also be applied to other fields (e.g., information management). Based on divide and conquer and improved color coding technique, we develop algorithms for path, matching and packing problem that significantly improve previous best algorithms. We prove that it is unlikely for certain problems in operation science and information management to have any relatively effective algorithm or approximation algorithm for them.

Zhang, Fenghui

2008-08-01T23:59:59.000Z

500

Energy-synchronized computing for sustainable sensor networks  

Science Conference Proceedings (OSTI)

To ensure sustainable operations of wireless sensor systems, environmental energy harvesting has been regarded as one of the most fundamental solutions for long-term applications. In energy-dynamic environments, energy conservation is no longer considered ... Keywords: Energy, Sustainable, Wireless sensor networks

Ting Zhu, Ziguo Zhong, Tian He, Zhi-Li Zhang

2013-06-01T23:59:59.000Z