Data transmission method and device for interlocking monitor and MSS system

Abstract

The invention provides a data transmission method and device for an interlocking monitor and an MSS system, and the method comprises the steps: transmitting a to-be-transmitted data frame to a maintenance support system MSS, and periodically receiving a heartbeat frame transmitted by the MSS system; and if the heartbeat frame is not received after the rated time length is exceeded, repeatedly sending the data frame needing to be retransmitted to the MSS system according to a preset period until the heartbeat frame sent by the MSS system is received again. According to the method, when the heartbeat frame is not received beyond the rated duration, the data frame needing to be retransmitted is repeatedly sent to the MSS system according to the preset period, system communication interruption or other faults can be found in time, and before the heartbeat frame sent by the MSS system is received again, the data frame needing to be retransmitted is repeatedly sent, so that the system can still receive missing monitoring data after communication recovery, so that problems and hidden dangers can be found in time, and on-site faults and accident reasons can be analyzed accurately.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a data transmission method and device for an interlock monitoring machine and an MSS system. Background technique [0002] In the operation process of the Communication Based Train Control System (CBTC system) in rail transit, in order to ensure the maintenance of the computer interlocking system and help the management personnel analyze the accidents on the spot and find equipment failures, the monitoring machine of the interlocking equipment It needs to communicate with the Maintenance Support System (MSS) in real time. [0003] At present, the interlock monitoring machine and the maintenance support system use the maintenance network for data communication. Specifically, in the existing rail transit CBTC system, the interlocking monitoring machine and the MSS system perform one-way communication through RS-422 serial cable or Ethernet, and the interlocking monitoring mac...

AI Technical Summary

Problems solved by technology

[0004] However, the maintenance network may fail to transmit some monitoring and maintenance data due to problems such as network link blockage, monitoring equipment CPU or memory full load, network physical component failure, etc., and thus cannot obtain the operation status of the on-site interlocking system and all on-site signal equipment, affecting the on-site Response speed of fault analysis and processing

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