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Sensors 2009, 9(2), 1282-1294; doi:10.3390/s90201282

A New Method for Node Fault Detection in Wireless Sensor Networks

Institute of Information and Control, Hangzhou Dianzi University, 310018, P.R. China
Received: 12 September 2008 / Revised: 16 February 2009 / Accepted: 17 February 2009 / Published: 24 February 2009
(This article belongs to the Special Issue Wireless Sensor Technologies and Applications)
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Wireless sensor networks (WSNs) are an important tool for monitoring distributed remote environments. As one of the key technologies involved in WSNs, node fault detection is indispensable in most WSN applications. It is well known that the distributed fault detection (DFD) scheme checks out the failed nodes by exchanging data and mutually testing among neighbor nodes in this network., but the fault detection accuracy of a DFD scheme would decrease rapidly when the number of neighbor nodes to be diagnosed is small and the node’s failure ratio is high. In this paper, an improved DFD scheme is proposed by defining new detection criteria. Simulation results demonstrate that the improved DFD scheme performs well in the above situation and can increase the fault detection accuracy greatly.
Keywords: Wireless sensor networks; node fault detection; improved DFD scheme Wireless sensor networks; node fault detection; improved DFD scheme
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Jiang, P. A New Method for Node Fault Detection in Wireless Sensor Networks. Sensors 2009, 9, 1282-1294.

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