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Special Issue "Wireless Sensor Networks and Platforms"

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A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Physical Sensors".

Deadline for manuscript submissions: closed (30 April 2006)

Special Issue Editor

Guest Editor
Dr. Keat Ghee Ong

SenTech Corporation, 200 Innovation Boulevard Suite 236, State College PA 16803, USA
Website | E-Mail
Fax: 814 238 8161
Interests: magnetoelastic sensors, magnetic sensors, sensor materials, carbon nanotubes, nanoporous ceramic, magnetism, electromagnetism

Published Papers (2 papers)

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Research

Open AccessArticle LON Technology in Wireless Sensor Networking Applications
Sensors 2006, 6(1), 30-48; doi:10.3390/s6010030
Received: 4 December 2005 / Accepted: 3 January 2006 / Published: 20 January 2006
Cited by 13 | PDF Full-text (287 KB) | HTML Full-text | XML Full-text
Abstract
In the paper a discussion on how to optimize LonWorks/EIA-709 sensornetworking technology for wireless applications, in presented. Main solutions offered byLocal Operating Networks (LON, LonWorks) platform attractive for wirelesscommunication, that is, the send-on-delta concept and the sleep mode, are displayed. Thepredictive p-persistent CSMA
[...] Read more.
In the paper a discussion on how to optimize LonWorks/EIA-709 sensornetworking technology for wireless applications, in presented. Main solutions offered byLocal Operating Networks (LON, LonWorks) platform attractive for wirelesscommunication, that is, the send-on-delta concept and the sleep mode, are displayed. Thepredictive p-persistent CSMA MAC protocol constituting the heart of the communicationcapability of LON networks is analysed in detail. Next, the message services are described,and the analytical evaluation of delivery reliability is derived. Performance evaluation basedon simulation results for unicast traffic is presented first. In order to highlight the robustnessof the predictive CSMA to overload situations, the saturation performance for a general caseload scenario including multicast transactions is reported. The methods of effectivemanagement of energy consumption in LonWorks networks are discussed. Finally, the LONdesign tradeoffs are summarized. Full article
(This article belongs to the Special Issue Wireless Sensor Networks and Platforms)
Open AccessArticle Send-On-Delta Concept: An Event-Based Data Reporting Strategy
Sensors 2006, 6(1), 49-63; doi:10.3390/s6010049
Received: 7 December 2005 / Accepted: 18 January 2006 / Published: 20 January 2006
Cited by 131 | PDF Full-text (113 KB) | HTML Full-text | XML Full-text
Abstract
The paper addresses the issue of the send-on-delta data collecting strategy tocapture information from the environment. Send-on-delta concept is the signal-dependenttemporal sampling scheme, where the sampling is triggered if the signal deviates by deltadefined as the significant change of its value. It is
[...] Read more.
The paper addresses the issue of the send-on-delta data collecting strategy tocapture information from the environment. Send-on-delta concept is the signal-dependenttemporal sampling scheme, where the sampling is triggered if the signal deviates by deltadefined as the significant change of its value. It is an attractive scheme for wireless sensornetworking due to effective energy consumption. The quantitative evaluations of send-on-delta scheme for a general type continuous-time bandlimited signal are presented in thepaper. The bounds on the mean traffic of reports for a given signal, and assumed samplingresolution, are evaluated. Furthermore, the send-on-delta effectiveness, defined as thereduction of the mean rate of reports in comparison to the periodic sampling for a givenresolution, is derived. It is shown that the lower bound of the send-on-delta effectiveness(i.e. the guaranteed reduction) is independent of the sampling resolution, and constitutes thebuilt-in feature of the input signal. The calculation of the effectiveness for standard signals,that model the state evolution of dynamic environment in time, is exemplified. Finally, theexample of send-on-delta programming is shown. Full article
(This article belongs to the Special Issue Wireless Sensor Networks and Platforms)

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