基于联锁的I/O控制器的设计与实现

The Design and Realization of I/O Controller Based On Interlocking

随着城市轨道交通系统的发展,信号系统已经成为城市轨道交通运营管理的中枢神经。作为信号系统之一的联锁,其主要作用是建立进路、进路解锁、控制道岔以及信号机的开放。基于联锁的I/O控制器实现了联锁与现场设备的通信。通过控制器,联锁可以实时地接收现场设备的状态,又可以将控制命令发送到相应的设备,所以控制器的性能与安全对整个系统也起着决定性的作用。文中从硬件以及软件两方面,对主备控制器的设计进行了深入分析。该控制器具有较高的安全性,将是城市轨道交通的一个很好的发展方向。

With the development of mass transit system, signaling system has been the nerve of mass transit operation control. As one subsystem of signaling system, interlocking＇ s main function is setting route, releasing route, controlling points and opening signal. I/O controller based on interlocking realizes the communication between interlocking and field elements. Through controller, interlocking can receive status of field elements on time and sends command to them. So the performance and safety have critical significance for the system. This article makes deep analysis for the design of host-standby controller from hardware and software. This controller has high safety, which will be a better developing direction.