一种新型轨道交通控制用安全关断电路

Introduction of a New Safe Shutdown Circuit for Railway Control System

安全关断电路是轨道交通控制系统中必不可少的组成部分,其性能对轨道交通控制系统的可靠性和安全性有着重要的影响。分析了轨道交通控制系统中安全关断电路的设计要求,在故障-安全设计方法的指导下设计了一种新型的安全关断电路。该电路在满足性能要求的同时满足相关标准的可靠性和安全性要求。所设计的安全关断电路已通过样机测试并准备投入应用。

Safe shutdown circuit is an essential component in railway control system, it has vital impact on the reliability and safety of this system. In this article, the design requirements of the safe shutdown circuit in the railway control system are analyzed, and a new type of safe shutdown circuit with the guide of failuresafety method is deigned. This circuit satisfies the performance requirements, and the requirements of availability and reliability in the reated standards. The new type circuit has already passed est and is going to be put into application.