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提出一种基于节点信誉的无线传感器网络故障检测算法.算法为每个传感器节点建立了基于Dirichlet分布的信誉函数,整个算法由检测模块、信誉更新模块和故障判定模块3部分组成.检测模块计算节点当前时刻的健康等级;信誉更新模块负责维护、更新节点的信誉值;故障判定模块则对是否发生节点故障和敏感事件进行判定.仿真结果表明,该算法具有较高的故障检测精度,在传感器网络故障节点达到25%的情况下,仍能检测出94.83%的故障节点,而误警率则可以保持在5%以下.
This paper proposes a node reputation based wireless sensor network fault detection algorithm.The algorithm establishes a credit function based on Dirichlet distribution for each sensor node.The whole algorithm consists of the detection module, credit update module and fault decision module 3. The detection module calculates the node The current status of the health level, the reputation update module is responsible for maintaining and updating the reputation value of the node, the fault determination module determines whether there is a node failure or a sensitive event, the simulation results show that the algorithm has high fault detection accuracy, When the faulty node reaches 25%, 94.83% of faulty nodes can still be detected while the false alarm rate can be kept below 5%.