在信号微机监测使用过程中,发现道岔动作电流曲线存在某一时段电流值全部为零的现象,对该现象进行了深入分析,发现微机监测统计道岔动作时间的计时电路存在缺陷。通过分析计时电路工作原理,找出了道岔动作电流值全部为零的原因,并提出了改进方案。 During the process of signal monitoring by computer, it is found that the current value of turnout current is zero for a certain period of time, and the phenomenon is analyzed in depth. It is found that the timing circuit of turnout operation time of microcomputer is deficient. By analyzing the working principle of the timing circuit, the reason why all the switch current values ​​are zero is found, and the improvement scheme is put forward.