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从分路电阻对机车信号的影响出发,通过建立机车信号主机接收电压的幅值包络模型,分析分路电阻、道砟电阻和补偿电容对该幅值包络的影响规律,并以此提出基于发送端轨面端点处的机车信号主机接收电压幅值的分路电阻估算方法,并将其与机车信号远程监测系统相集成。实验表明,本文所提算法能够准确计算出分路正常和分路不良两种状态下的分路电阻值,且不受道砟电阻变化、补偿电容故障等因素的影响,具有较强的鲁棒性,可实现对各轨道电路分路电阻的监测和预警,并为进一步实现对“分路不良”的预测和预防提供新的实现方案。
Based on the influence of shunt resistance on locomotive signals, the amplitude envelope model of locomotive receiving voltage is established to analyze the influence law of shunt resistance, resistance and compensation capacitance on the amplitude envelope, Based on the estimation of the shunt resistance of the locomotive signal host receiving the voltage amplitude at the end of the sending end rail surface and integrating it with the locomotive signal remote monitoring system. Experiments show that the proposed algorithm can accurately calculate the shunt resistance under the two conditions of normal shunt and poor shunt, and is not affected by factors such as the resistance change of shunt and compensation capacitor, and has strong robustness Which can realize the monitoring and early warning of the shunt resistance of each track circuit and provide a new solution for further realizing the prediction and prevention of the “shunting fault”.