物联网中WSN网络中的节点故障快速定位模块设计与实现

Design and implementation of fast positioning module for node faults in WSN in Internet of Things

在复杂的物联网环境中,传统依据贝叶斯的节点故障定位方法,受到网络拓扑结构的不稳定性以及不完整性的限制,导致节点故障定位效率低。为了快速检测出WSN中的节点故障,设计一种WSN网络中的节点故障快速定位模块,对WSN节点中的传感器子模块、处理器子模块、无线通信子模块以及能量供应子模块的运行情况进行检测,及时获取节点的故障信息。介绍WSN网络中的网关节点、参照节点和不确定节点的功能设计,通过CC2530芯片实现这些节点信息的处理和控制,并给出WSN节点故障定位模块软件设计中的主程序以及终端服务程序的流程。实验结果表明,所设计的节点故障定位模块,在节点故障定位效率、精度以及鲁棒性方面都具有较高的优势。

Traditional node fault positioning method based on Bayesian method,in the complex environment of the Internetof things,is limited by the instability and imperfection of the network topology structure,which leads to low efficiency of nodefault positioning. For rapid detection of node failures in WSN,a fast positioning module for node faults in WSN is designed inthis paper to detect the operation condition of sensor submodule,processor submodule,wireless communication submodule andenergy supply submodule in WSN nodes,and obtain the node fault information in real time. The function design of the networkgateway node,reference node and uncertain node in WSN is introduced. The node information processing and control areachieved with CC2530 chip. The technological process of main program and the terminal services program in the software designprocess of WSN node fault positioning module is given. The experiment result shows that the designed node fault positioning mod?ule has the advantages of high efficiency,accuracy and robustness in the node fault location.