基于MQTT协议的道岔安全监测系统优化研究

城市轨道交通道岔运行状态实时监测,能有效提高列车运行安全性,并大幅度减少人工成本。从线缆传输带宽受限角度出发,提出一种基于消息队列遥测传输协议(MQTT)的城市轨道交通道岔安全监测系统,能够对数据优先级进行分类并实现动态时隙分配。利用图论的最短路径算法,实现信息的高效传输。利用MQTT协议轻量特性,优化了多数据并发的传输性能,改善现场传输带宽受限的不足,提高系统工作效率。

Optimization of turnout safety monitoring system based on MQTT protocol

The real-time monitoring of rail transit turnout operation effectively improves the safety of train operation and greatly reduces the labor cost.From the point of view of limited cable transmission bandwidth,this paper proposes a rail transit turnout safety monitoring system based on MQTT protocol,which classifies data priority and realizes dynamic slot allocation.The shortest path algorithm of graph theory is used to realize the efficient transmission of information.By using the light-weight characteristics of MQTT protocol,the transmission performance of multi data concurrency is optimized,both the limitation of fi eld transmission bandwidth and the working efficiency of the system is improved.