基于PRP监测帧的城轨信号系统车地无线通信冗余网络监视方法  

PRP-monitoring-frame-based Redundant Network Monitoring Method of Vehicle-ground Wireless Communication for Urban Rail Signal System

作　　者：郭碧 GUO Bi

机构地区：[1]中铁第四勘察设计院集团有限公司通信信号研究设计院,武汉430063

出　　处：《铁道通信信号》2025年第1期57-63,共7页Railway Signalling & Communication

基　　金：中铁第四勘察设计院集团有限公司科研课题(G102401KYYHC)。

摘　　要：在城市轨道交通线路采用不同车地无线通信制式的场景中,基于并行冗余协议(PRP)构建的信号系统车地无线通信冗余网络,存在单一链路传输故障监测困难的问题。通过对CBTC系统不同车地无线通信场景及需求进行分析,在充分研究IEC 62439-3监测帧数据结构和工作机制的基础上,提出采用周期性发送监测帧来实现对冗余通信网络节点链状态的监视,并构建了监视机制和算法流程,对该监视方法进行测试和网络负载影响分析。测试结果表明:监测帧可监视数据链路通信状态,且监测帧数据传输对既有网络影响小,验证了该方法在城轨信号系统车地通信并行冗余网络实时监视和网络故障快速定位中应用的可行性。In scenarios where different vehicle ground wireless communication standards are adopted for urban rail transit lines,the signal system vehicle ground wireless communication redundant network constructed based on the Parallel Redundancy Protocol(PRP)has the problem of difficulty in monitoring single link transmission faults.By analyzing the different scenarios and requirements of wireless communication between vehicles and ground in the CBTC system,and based on a thorough study of the data structure and working mechanism of IEC 62439-3 monitoring frames,a monitoring method is proposed to periodically send monitoring frames to monitor the status of redundant communication network node chains.The monitoring mechanism and algorithm flow are constructed,and the monitoring method is tested and network load impact analysis is conducted.The results show that the monitoring frame can monitor the communication status of the data link and the transmission of monitoring frame data has little impact on the existing network,verifying the feasibility of this method in real-time monitoring and rapid fault location of parallel redundant networks for urban rail signal systems.

关 键 词：CBTC系统 车地通信 并行冗余协议 故障监测 监测帧 

分 类 号：U285.41[交通运输工程—交通信息工程及控制]