城市轨道交通信号系统采集和驱动电路雷击试验方法

摘要

通过分析城市轨道交通信号系统采集和驱动电路的工作原理,找到了雷电电磁脉冲的引入途径.结合测试标准要求,分别给出了采集电路、光控可控硅驱动电路和晶体管驱动电路等三种不同接线形式的雷击试验方法.指出了试验过程中需要注意的问题,为城市轨道交通信号采集和驱动电路的防雷设计提供合理的试验方法.%With an analysis of the working principle of acquisition and driving circuit of urban rail transit signal,the induction way of lightning impulse is detected.According to the test standards,three test methods for lightning impulse——acquisition circuit,optocoupler SCR circuit and transistor drive circuit are given respectively.The purpose is to provide a reasonable test method for the lightning protection design of railway signal acquisition and drive circuit.