BERT-BiGRU Intelligent Classification of Metro On-Board Equipment Faults Based on Key Layer Fusion
Table 1
Fault sample data.
Serial number
Description of fault occurrence
Fault classification
1
During the train operation, the communication between on-board equipment and TCM equipment is abnormal, and MMI displays TMS cross. Then, the train emergency braking exits AM mode, and ATO is unavailable at this time, reporting ATO alarm abnormal fault.
Communication interruption fault
2
When the train passes through two continuous balise during operation, the on-board BTM does not receive the balise information. The train outputs emergency braking and prompts the driver to switch to RM mode after parking.
Transponder receiving module failure
3
The train is mainly in ATO mode with 3 ends. When running to the platform, SMC displays and reports abnormal alignment and 2 recovers. CCOT displays and reports fc04, the train opens and closes normally, and the PSD is linked normally.
Alignment fault
4
After the operation dispatching discharges the train route and activates the train, the train starts emergency braking. CCOT displays that the train reports fc12 for 25 seconds and then recovers. The operation dispatching releases EB command for the train, and the release is successful. Vehicle on-board computer gave 81.5% traction, and the vehicle equipment did not respond in time.
