基于LEACH协议的WSNs楼宇环境监控系统的设计

Design of Building Environmental Monitoring System Based on LEACH Protocal

针对楼宇环境监控的布线复杂与高功耗,设计了一种基于WSNs的大楼监控系统,使用了LEACH路由协议,构造了一个基于簇的网络。由于系统中的节点受到无线传输范围的限制,距离较远的簇首不能直接传递信息包给汇聚节点,所以簇首信息的交换被一个以汇聚节点为根的多跳生成树代替,汇聚节点将信息汇总然后发送至服务器内,这种簇的构造方法消耗节点能量少。子节点周期性地记录各种环境数据,实现数据传输。现场测试结果表明:此系统数据采集准确,操作方便,结构简单,实时性好。

Aimed at that the complex wiring and high power consumption in building environmental monitoring, the paper designs a kind of building monitoring system based on WSNs and structures a network based on cluster using LEACH （Low Energy Adaptive Clustering Hierarchy）routing protocol. Cluster head information exchange is replaced by a Sink node as the root in a many spanning tree due to the fact that head node cannot communicate with a far one directly because of the restriction in wireless transmission range. Sink node receives message transferred by cluster- head nodes and then delivers it to the server after gathered. This method of the structure of cluster node consumes energy little, Child nodes can record the data of environment periodically and enforce the action of transmission. The result of field test indicates that the system is precise, handiness, simple and real-time