NDLI: Sensor Web Adaptation to Dynamic Sensor Networks

Content Provider	IEEE Xplore Digital Library
Author	Saini, G. Nickerson, B.G.
Copyright Year	2011
Abstract	As nodes appear and disappear in a Wireless Sensor Network (WSN), communication protocols acting in the data link, network and transport layers adapt dynamically to the new network structure. We present an extension of the dynamic nature of WSNs to the web via an adaptive communication protocol called the adaptive Sensor Web Language (SWL). Adaptive SWL provides a web application with a reliable mechanism for automatically tracking and displaying changes in sensor network architecture. New nodes automatically appear in web-based applications. A color fading mechanism is also provided to differentiate sensor nodes which have not communicated within the expected time frame. Two new message types, Request Announce and Announce are added to SWL to support this adaptation. All software layers, including sensor nodes, gateway, base station (including the database) and the web applications were updated. Two web applications were implemented to clearly demonstrate web application adaptation to dynamic WSNs. The Open Geospatial Consortium's (OGC) standard Sensor Observation Service (SOS) was integrated with Google maps to show the spatial context of changing WSN structure. A test network was established using 6 sensor nodes and 10 sensors (6 battery voltage sensors, 2 air temperature sensors and 2 solar radiation sensors), and 1 gateway. Each node was added one by one over 4 hours in the network, then removed one by one from the network over 4 hours. Testing indicates appearance of a node in the web application within about 13 seconds of being added to the WSN with a system latency of 47.5 seconds averaged over 40 tests.
Starting Page	137
Ending Page	144
File Size	894265
Page Count	8
File Format	PDF
ISBN	9781457700408
DOI	10.1109/CNSR.2011.28
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-05-02
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless sensor networks Base stations Servers Google Protocols Logic gates Temperature sensors adaptive web display of changing sensor networks wireless sensor networks web integration
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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