标题：Normal vector based fault-tolerant event boundary detection in wireless sensor networks
作者：Wang, Wei ;Zhang, Ruihua ;Chen, Zhongwei ;Ju, Lei
作者机构：[Wang, Wei ;Zhang, Ruihua ;Chen, Zhongwei ;Ju, Lei ] School of Computer Science and Technology, Shandong University, Jinan, China
会议名称：12th IEEE International Conference on Trust, Security and Privacy in Computing and Communications, TrustCom 2013
会议日期：16 July 2013 through 18 July 2013
来源：Proceedings - 12th IEEE International Conference on Trust, Security and Privacy in Computing and Communications, TrustCom 2013
关键词：event boundary detection; fault tolerant; normal vector; wireless sensor networks
摘要：This paper presented a distributed fault-tolerant event boundary detection scheme for wireless sensor networks. In this paper, the node coordinate and its reading were mapped on a 3D mesh surface, By comparing the node normal vector got by Normal Vector Based Fault-Tolerant Event Boundary Detection (NVBD) with a predefined threshold, the event boundary nodes are found. This approach was composed of two major tasks: (1) detecting the faulty node and then replacing its detection value with its neighbors' weighted median value, (2) computing node normal vector using its neighbors' detection values. Then we compared it with a threshold to judge if it is a boundary node. The results of numerical simulations show that the NVBD scheme can achieve a substantial improvement on detection performance. © 2013 IEEE.