基于无约束插值法的无线传感网络故障节点检测研究

Research on Fault Node Detection in Wireless Sensor Network Based on Unconstrained Interpolation

在无线传感网络故障节点检测的过程中,由于不同节点的约束条件不同,会对故障定位过程中的阈值判断过程造成干扰,造成故障节点检测精度差、误报率高、节点传输能耗高等问题。为解决上述问题,提出基于无约束插值法的无线传感网络故障节点检测方法。利用约束插值法预测节点位置,定位节点的位置,采用提取节点的特征,通过矢量量化技术识别故障节点,利用阈值修正模块判断故障类型,完成在无约束条件下的无线传感网络故障节点检测。实验分析结果表明,当节点数量为100个时,无线传感网络故障节点检测结果的准确度最高,此时所提方法的故障检测精度为95%、误报率为18%,传输能耗为0.25 J。

In the process of fault node detection in wireless sensor networks,different constraints of different nodes will interfere with the threshold judgment process in the fault location process,resulting in poor node detection accuracy,high false alarm rate,and high node transmission energy consumption.To solve the above problems,a method for detecting fault nodes in wireless sensor networks based on unconstrained interpolation is proposed.The constrained interpolation method is used to predict the node position,locate the node posi-tion,extract the characteristics of the node,identify the fault node through the vector quantization technology,use the threshold correction module to judge the fault type,and complete the wireless sensor network fault node detection under unconstrained conditions.The experimental analysis results show that when the number of nodes is 100,the accuracy of the fault node detection of the wireless sensor network is the best.At this time,the fault detection accuracy of the method is 95%,the false alarm rate is 18%,and the transmis-sion energy consumption is 0.25% J.