Research on Low Energy Consumption Distributed Fault Detection Mechanism in Wireless Sensor Network

摘要

Wireless sensor network is an im-portant technical support for ubiquitous com-munication. For the serious impacts of net-work failure caused by the unbalanced energy consumption of sensor nodes, hardware failure and attacker intrusion on data transmission, a low energy consumption distributed fault detection mechanism in wireless sensor net-work (LEFD) is proposed in this paper. Firstly, the time correlation information of nodes is used to detect fault nodes in LEFD, and then the spatial correlation information is adopted to detect the remaining fault nodes, so as to check the states of nodes comprehensively and improve the efficiency of data transmission. In addition, the nodes do not need to exchange information with their neighbor nodes in the initial detection process since LEFD adopts the data sensed by node itself to detect some types of faults, thus reducing the energy con-sumption of nodes effectively. Finally, LEFD also considers the nodes that may have tran-sient faults. Performance analysis and simula-tion results show that the proposed detection mechanism can improve the transmission per-formance and reduce the energy consumption of network effectively.