Efficient fault node detection algorithm for wireless sensor networks

The performance of wireless sensor networks (WSNs) degrades due to the presence of faulty sensor node. Therefore, fault node detection is an important problem in WSNs. The conventional fault detection methods where the faulty node is detected by measuring the outlyingness of the sensor data with respect to measured mean is not providing better performance in high noise environment. To overcome that problem, in this paper we have proposed centralized robust fault detection algorithm to identify soft faulty sensor node present in the network. The simulation results show that the detection accuracy and false alarm rate performance is much better compared to the conventional algorithm.