煤矿水泵控制系统双机热备设计方案

Design Scheme of Hot-standby of Pump Control System of Coal Mine

介绍了一种应用于煤矿水泵控制系统的主—备方式双机热备设计方案,阐述了双机热备工作过程,详细介绍了双机热备的总体设计、基本业务流程及接管控制流程设计。两台控制机之间通过心跳帧实现数据交互,通过比较切换时间及控制机地址数值解决初始化时两台控制机同时上电、争抢主控权的问题,通过备用机接管控制解决主控机在控制设备启停过程中发生故障可能导致设备失控的问题。该方案实现了主控机与备用机的自动切换,达到了系统不间断运行的目的,提高了系统的稳定性。

The paper introduced a design scheme of host-standby mode hot-standby of pump control system of coal mine,described working process of hot-standby and introduced overall design and designs of basic business flow and take-over control flow in details.Two controllers exchange data through heartbeat frame.The pump control system solves problems of simultaneous power-on and fighting for controlling power during initialization of the two controllers by comparing switching time and value of address of the controller,and avoids failure of the host controller during the course of equipment start or stop which may cause equipment loss of control by the standby controller taking over controlling power.The scheme implements automatic switching over between host controller and standby controller,achieves purpose of continuously running of the system,and improves stability of the system.