INTERLOCKING CIRCUIT OF DUAL SYSTEM FOR MASTER AND STAND-BY SYSTEM

摘要

The main and the standby system checks each other to allow the normal system to control the peripheral equippments using the switching circuit. The switching controller (14) receives heart beat signals (HB1,GB2) transmitted periodically when the master and the standby system is normal to apply life signals (LS1,LS2) to the master and the standby system. The master and the standby system checks the normality of the opposite system using the life signals and transmit the switching control signals (SC1,SC2) to the switching controller.