A Localized Fault Detection Algorithm in Sensor Networks

C.-R. Li and C.-K. Liang (Taiwan)


Sensor networks, fault detection algorithms


This paper targets the identification of faulty sensors in sensor networks with faulty sensors. We propose a novel algorithm for faulty sensor identification. Our algorithm is purely localized and thus is suitable for large scale of sensor networks. The computational overhead is low since the detection algorithm, which is a clustering algorithm, is quite simple. Simulation results show that our algorithm can identify faulty sensors with a very high accuracy and a low false alarm rate when as many as 25% sensors become faulty. Our algorithm, therefore, achieves a great improvement over the previous algorithms.

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