中文摘要：

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。

英文摘要：

Starting from the influence of shunt resistance on cab-signal,this paper established the amplitude envelop model of the receiving voltage of cab-signal host computer to analyze the effect of shunt resistance,ballast resistance and compensation capacitors on the amplitude envelope,based on which,the estimation method of shunt resistance was proposed based on the amplitude of the receiving voltage of cab-signal host computer at rail surface end point in the sending end,and was integrated in the cab-signal remote monitoring system.The experimental results showed that the algorithm proposed in this paper can accurately calculate the shunt resistance under both the normal shunt function and shunt malfunction conditions,which is hardly affected by the change of the ballast resistance and the fault of compensation capacitors with good robustness.The method,which can achieve the monitoring and early warning on shunt resistance of each track circuit,can further provide technical support for the prediction and prevention of shunt malfunction.