关键词: 冗余, 双机热备, 双网控制, ATS

Abstract: This paper mainly introduces the control strategy and logic of dual-network and dual hot-standby system. The traditional master-backup control method has not been used for dual-network, but the same information is transmitted on the two networks at the same time, and the middle layer software of network node equipment is responsible for parsing messages. This dual-network structure does not need switching, and improves efficiency. On the basis of dual-network, dual hot-standby system monitors and manages the active and backup status through the heartbeat signals. This paper also provides a solution to the information island problem which exists in hot-standby system

Key words: redundancy, dual hot-standby, dual-network control, ATS