CAJ | 학술논문

在基于无线传感器网络的结构健康监测中,故障节点产生并传输的错误数据将消耗节点的能量和带宽,同时会形成结构健康监测的错误决策.针对该问题,提出一种节点故障诊断算法,利用节点感知传感数据的空间相似性,通过对邻节点所感知的传感数据进行比较,确定检测节点的状态,将测试状态向网络中其他相邻节点进行扩散,实现网络中全部节点的故障检测.同时介绍在不同平均节点度下改善故障诊断率的方法.实验结果表明,该算法能够获得较好的性能.
재기우무선전감기망락적결구건강감측중,고장절점산생병전수적착오수거장소모절점적능량화대관,동시회형성결구건강감측적착오결책.침대해문제,제출일충절점고장진단산법,이용절점감지전감수거적공간상사성,통과대린절점소감지적전감수거진행비교,학정검측절점적상태,장측시상태향망락중기타상린절점진행확산,실현망락중전부절점적고장검측.동시개소재불동평균절점도하개선고장진단솔적방법.실험결과표명,해산법능구획득교호적성능.
In structural health monitoring of Wireless Sensor Network(WSN), a faulty sensor may produce incorrect data and transmit them to the others. It consumes the limited energy and bandwidth of WSN. The base station may make inappropriate decision when it receives the incorrect data. Aiming at this problem, a distributed fault detection algorithm for WSN is presented. Faulty sensor nodes are identified based on comparisons between neighboring nodes and dissemination of the decision made at each node. The whole node detection is implemented. The method to improve fault diagnosis rate in different average node degree is proposed. Experimental results show that sensor nodes with permanent faults are identified with high accuracy for a wide range of fault rates.