基于ZigBee技术智能防溜系统信道自动切换设计与开发

Channel Switching Automatically of Intelligent Anti-slip System Based on ZigBee

铁道中间站车辆防溜作业极其重要,目前车站多采用基于ZigBee无线网络的智能防溜系统,而Wi-Fi网络与ZigBee网络共享2.4GHz的频段,影响ZigBee通信稳定性。设计出一种智能防溜系统信道自动切换通讯方法 ,协调器定时监测并统计所有终端(铁鞋)与路由器之间,以及路由器与协调器之间的接收信号强度值RSSI,并求其算术平均值Avg,然后将该值与参考值进行比较结果作为判定切换信道的条件,从而提高系统的通讯稳定性。

The anti-slip operation in railway yard is of great importance.The intelligent anti-slip system based on the technology of ZigBee are adopted by most of domestic railway stations.However,the technology of WIFI and ZigBee share the frequency of 2.4G,which influences the communication stability of ZigBee.Based on the background above,a method which can change the channel automatically is designed in this paper.