广州地铁主控系统接口冗余通信分析

Analysis for Redundant Communication of Main Control System Interface in Guangzhou Subway

介绍广州地铁主控系统接口设备前端处理器(FEP)的软硬件配置,阐述冗余链路的设计思路与实现方式,并从初始化、数据通信、主从判断、冗余切换方式以及时间参数限定5个方面分析主控系统接口通信过程。实践证明,广州地铁主控系统接口冗余链路设计具有显著的优点,为其他的接口设计提供参考方案。

The article introduces the software and hardware configuration of FEP （Front End Processor） in MCS （Main Control System） of Guangzhou Subway, describes the design and implementation of redundant link, and analyses MCS interface communication from initialization, data communication, host/standby detection, redundancy cut and time parameter definition. Practice indicates that the MCS interface redundant link design of Guangzhou subway has remarkable merits and can be referred to by other interface design.