地铁列车网络控制系统典型MVB通信故障分析及处理

Typical Faults Analysis and Troubleshooting of a MetroTrain MVB Communication Network Control System

介绍某地铁列车网络控制系统拓扑结构,并阐述了MVB通信相关参数设计和通信质量评价标准。针对某地铁列车网络控制系统发生的2起典型MVB通信故障,在排除了物理线路、外部电磁干扰、子系统软硬件设计等因素影响后,借助MVB分析仪和示波器等仪器确定故障原因,通过调整列车网络控制系统MVB板卡底层软件通信相关参数来解决通信故障问题。最后针对轨道交通车辆类似问题,给出故障调查分析方法以供参考。

The topological structure of a metro train network control system was introduced,and the design of MVB communication parameters and communication quality evaluation criteria was expounded.Aiming at two typical MVB communication faults occurred in a metro train network control system,after eliminating the influence of physical lines,external electromagnetic interference,software and hardware design of subsystems and other factors,by means of MVB analyzer and oscilloscope to locate the cause of failure,the problem of communication failure was solved by adjusting the relevant parameters of the underlying software communication of MVB board in train network control system.Finally,aiming at the similar problems of rail transit vehicles,the fault investigation and analysis methods were provided for reference.