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半自动闭塞故障对铁路行车效率的影响很大,维护实践中属于通信范畴的半自动闭塞外线故障,大多数是由于通信电缆中断导致半自动闭塞外线断线。在半自动闭塞日常故障处理中又涉及信号设备和通信传输线路故障,如何快速断定通信线路(半自动闭塞回线)的正常与否尤为关键。1半自动闭
Semi-automatic occlusion faults have a great influence on the railway traffic efficiency. In the maintenance practice, semi-automatic blocking external faults belonging to the communication category mostly result in the disconnection of the semi-automatic blocking external lines due to the interruption of the communication cables. It is especially critical how to quickly determine whether the communication line (semi-automatic occlusion return line) is normal or not in the event of a semi-automatic blockage of routine troubleshooting involving signal equipment and communication transmission lines. 1 semi-automatic closed