关键词: 25?Hz轨道电路, 故障处置, 信号, 集中监测

Abstract: The track circuit is one of the important signaling equipment to monitor the idle rail line and reflect the train operation. In application of 25 Hz track circuit, the red light strap fault, especially the flashing red fault, which is easily affected by the change of the equipment characteristics and the interference of the external environment, is very difficult to deal with in an emergency, and interferes greatly with the normal transportation order. This paper makes an analysis and discussion on how to deal with the faults of 25 Hz track circuit, making full use of monitoring, adjustment and analysis combined with frequency shift meter, and adopting the method of combining voltage method with current method to rapidly and effectively handle the red light strap fault in track circuit.

Key words: 25 Hz track circuit, fault handling, signaling, centralized monitoring