一种通过剩余能量过滤进行簇头选举的低能耗无线路由算法

基于LEACH协议提出一种改进的无线传感器网络的自组织路由算法。该算法在原LEACH协议的簇头产生环节做了较大改进，在簇头产生过程中，将当前节点剩余能量与全无线传感器网络节点平均剩余能量进行比较，防止剩余能量小于全网平均剩余能量的节点当选簇头，进一步优化了全网络节点能量消耗的均衡性，有效推迟了节点的死亡时间。通过在簇头选举阶段使用有目的性的筛选取代LEACH的随机选取，实现降低无线传感器网络能耗、延长网络生命周期的目的。通过MATLAB仿真软件进行试验测试，结果表明，改进的算法可以提高无线网络的生命周期，均衡无线网络能量消耗，增加网络吞吐量，有效延迟无线网络节点的死亡时间。

A Low Energy Wireless Routing Algorithm for Cluster Head Selection by Residual Energy Filtering

Based on LEACH protocol, an improved self-organizing routing algorithm for wireless sensor network is proposed. The algorithm is improved in the cluster head generation of the original LEACH protocol. In the process of cluster head generation, the algorithm compares the current node residual energy with the average residual energy of all wireless sensor network nodes, prevents the nodes whose residual energy is less than the average residual energy of the whole network from being selected as cluster heads, so as to further optimize the balance of energy consumption of nodes in the whole network and effectively delay the dead time of nodes. In the cluster head election stage, the random selection of LEACH is replaced by purposeful screening so as to reduce the energy consumption of wireless sensor network and extend the network life cycle. The test is carried out by MATLAB simulation software. The experimental results show that the improved algorithm can improve the life cycle of wireless network, balance the energy consumption of wireless network, increase network throughput, and effectively delay the dead time of wireless network nodes.