3 results about "Standby redundancy" patented technology

This application proposes a fault redundancy switching method and system for urban rail transit switch machines. Belonging to the field of switch machine fault diagnosis, the method includes: determining whether a switch machine has malfunctioned according to preset unified rules; when a fault is determined to have occurred, collecting relay timing information and indicated voltage information during the switch machine's operation; based on the relay timing information and indicated voltage information, determining whether the fault is indoor or outdoor according to preset diagnostic logic; if it is an indoor fault, performing two-level safety verification: the first level verifies and generates a switching request, and the second level verifies the interlocking safety conditions; only when both levels of verification pass, driving the redundancy switching circuit to switch the control circuit from the primary circuit to the backup redundant circuit; if it is an outdoor fault, generating outdoor fault alarm information. It can accurately locate indoor and outdoor faults and automatically perform safe redundancy switching in the event of an indoor fault.

The present disclosure relates to a central control unit master-slave synchronization control method, device and control system, the method comprising real-time detection of state information and fault information of a master central control unit; automatic synchronization based on the state information and the fault information, which can realize synchronization consistency after seamless hot standby redundancy switching of the central control unit, effectively guaranteeing safe and reliable operation of the train.

This disclosure provides a control method and train for a clustered hot standby redundancy system, which can be applied to the fields of vehicle control technology and communication. The control method includes: determining the priority of the target system to which the target device belongs or the command operation status of the target device in the clustered hot standby redundancy system according to the device attributes of the target device. The target system includes multiple devices, and the clustered hot standby redundancy system includes multiple systems. The multiple systems are classified into a master system and a hot standby system. The master system is used to manage the communication data of the train, and the hot standby system is used to back up the communication data. The master and standby systems are switched according to the priority or command operation status.