基于ZigBee监测高速铁路基础设施监测的无线传感器网络研究与应用

摘要

本文根据对高速铁路基础设施状态监测的需求,设计和实现了一种监测高速铁路基础设施的无线传感器网络.采用JN5148 ZigBee模块和GPRS模块沿铁路沿线组建一个链状的无线监测网络完成数据采集、汇聚和远程传输的功能.本文首先阐述了网络节点硬件结构；然后根据节点能量有限的条件,设计了时间同步休眠的ZigBee网络节能策略和基于阈值的传感器采集节能策略,提高设备的生存周期；最后测试了该网络的传输性能,结果表明该无线监测网络可以对传感器信息进行准确采集、数据汇集和远程通信.%Wireless Sensor Networks(WSNs) of high-speed rail infrastructure monitoring were designed and implemented in this paper.ZigBee modules JN5148 and GPRS module were used to establish a linear WSNs for data collection and remote communications.Firstly,the hardware designs of router node and coordinator node were given.Then,a low-power data collection and operation strategy based on time synchronization protocol was proposed and implemented,which could effectively extend the life cycle of the device.The test results showed that the wireless monitoring network achieved the design goals well in accurate sensor information gathering,data collection and remote communications.