环境监测无线传感器网络路由算法研究

针对环境监测无线传感器网络中由于监测范围广,引起距离客户端较远的节点耗能大进而先失效,网络覆盖范围随运行时间而快速缩小的问题改进了LEACH路由算法。充分利用网络节点的冗余度,通过让一部分节点先睡眠再唤醒的方式来取得更大的网络覆盖范围。分别应用LEACH算法和改进的算法对同一配置的环境监测无线传感器网络进行路由测试,仿真结果表明：本文提出的改进算法拥有更低的网络能耗、更长的网络生存时间和更大的网络覆盖范围。此改进算法为工程实践提供了解决路由问题的新思路。

Research on Routing Algorithm in the Environmental Monitoring Wireless Sensor Networks

The monitoring range of the wireless sensor networks is large. This will cause the sensor nodes which are far away from the client out of energy quickly. Aiming at the network coverage shrinks quickly, the LEACH algorithm is improved in this paper. The improved algorithm gets bigger network coverage through making some nodes sleep first and then awake. Testing the same environmental monitoring wireless sensor networks using LEACH algorithm and the improved algorithm, the simulation results show that the improved algorithm cause lower network energy consumption, longer network lifetime and bigger network coverage. This improved algorithm offers new ideas for the engineering practice.