一种改进无线传感器网络的环境监测系统设计

为了解决环境监测中远程采集数据的实时传输和对监测数据进行管理分析的问题，设计了一种基于无线传感器网络的远程环境监测系统，通过GPRS技术实现了监测中心与监测终端之间的实时命令控制及数据传输，系统采用了移动汇聚节点的方法，解决节点能量更换频繁且容易产生的“能量空洞”问题，系统测试表明，基于移动汇聚节点的环境监测系统能够延长网络的生命周期，确保各个节点的能量消耗均衡，并且网络整体数据包丢失率和时延与固定汇聚节点的监测系统接近，实现了远程监控数据的实时传输。

Study on the City Environment Monitoring System Based on WSN

Aiming at the problem of environmental monitoring in real-time remote data collection and monitoring data transmission, a remote environmental monitoring system with wireless sensor networks was designed, based on GPRS technology center and real-time monitoring of terminals command control. To solve the frequent changes of energy and the easily occurring＂ energy hole＂ problem, the mobile sink was employed. Experiment results show that the environmental monitoring system based on the mobile sink can prolong the network life time, and ensure the average energy consumption of each node, the network packet loss rate and delay close to the environmental monitoring system based on the fixed sink, it acquire real-time data transmission of remote monitoring.