Fault Diagnosis of Signal Equipment on the Lanzhou-Xinjiang High-Speed Railway Using Machine Learning for Natural Language Processing

Table 2

Example of signal equipment fault data.

Topic	Terms included
T1	Switch, normal position, reverse position, loss of indication
T2	Idle, iron filings, baseplate, switch rail, scraping
T3	ATP, transponder, deletion, abnormal data, information loss
T4	Communication, C2, C3, wireless connection, timed out, ATO
T5	Restart, DMI, black screen, change, auxiliary screen, white screen
T6	Overrunning, emergency braking, linkage, partial monitoring
T7	Loss of occupancy, CTC, flash off, crash, trigger
T8	Dispatch, loss of occupancy, wrong train number
T9	Red light strip, materials, bad insulation, fuse
T10	Mixed line, internal module, I-V curves, red light strip
T11	Switching performance, trip, ground wire, circuit breaker, current limiting
T12	Slot insulation, iron filings, voltage levels drop, short-circuit, sundries
T13	PIO, machine cabinet, terminal, control station, black screen
T14	Lights out, lighting unit, contact problems, broken wire
T15	DMI, communication interruption, black screen, train-control, start up
T16	Snowmelt, heating, voltage, snowfall, temperature
T17	UPS, power supply, cut-out, high temperature, battery