二元决策图和故障树相融合的无线传感器网络可靠性分析

Reliability Analysis of Wireless Sensor Networks Based on Binary Decision Diagrams and Fault Tree

为了提高无线传感器分析网络可靠性,提出一种基于二元决策图和故障树相融合的无线传感器网络可靠分析方法;首先根据无线传感器网络拓扑结构建立了故障树模型,然后将无线传感器网络故障树转化为二元决策图结构,最后采用仿真实验分析了不同节点冗余度、不同跳数条件下无线传感器网络的可靠性;仿真结果表明,文章方法的分析结果可以帮助无线传感器网络性能的优化,可以提高无线传感器网络的可靠性。

In order to improve reliability of wireless sensor networks, a new reliability analysis method of wireless sensor networks is proposed based on binary decision diagrams and fault tree in this paper. Firstly, fault tree model is built based on hierarchical clustering to- pology of wireless sensor networks, and then network fault tree of topology structure is converted into binary decision diagrams structures, finally, the simulation experiment is carried out to test the performance under different performance criterion such as node redundancy, dif- ferent hops between nodes. The results show that the proposed method can provide useful message for the performance optimization of wire- less sensor network and improve the reliability of wireless sensor network.