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无线传感网络是物联网的核心技术,其由部署在监测区域内大量的廉价微型传感器节点组成。节点除了感测特定的对象,还需要维持互相之间的网络连接。在传感器节点能量受限制情况下,良好的网络拓扑控制方法能够提升传感器网络的生存时间。因此合理地控制网络拓扑结构是当前无线传感器网络研究领域的热点和难点。提出了一种无线传感器网络分簇拓扑容错算法,利用主从簇头方式分摊簇头能量消耗,并采用候选簇头机制解决簇头失败。仿真实验证明该算法不仅具有较低的复杂度和较低的节点平均通信半径,而且具有较好的容错性能和较长的网络生命周期,可显著提高物联网的整体性能。
Wireless sensor networks are the core technology of IoT, which consists of a large number of inexpensive micro-sensor nodes deployed in the monitoring area. Nodes in addition to sensing specific objects, but also need to maintain the network connection between each other. In the case of sensor node energy constraints, a good network topology control method can improve the sensor network survival time. Therefore, it is a hot and difficult issue in the field of wireless sensor networks to control the network topology rationally. A fault-tolerant algorithm for clustering topology based on WSN is proposed. It uses the master-slave cluster head to share the energy consumption of the cluster head and uses the candidate cluster head mechanism to solve the cluster head failure. Simulation results show that this algorithm not only has lower complexity and lower average communication radius, but also has better fault tolerance and longer network lifetime, which can significantly improve the overall performance of the Internet of Things.