Fault Diagnosis Method Based on I/O Measuring Point Fault Dependency Matrix
A technology that relies on matrix and fault diagnosis. It is applied in the direction of registration/indication of vehicle operation, registration/indication, instruments, etc. It can solve the problems of high diagnosis cost, difficult analysis model, insufficient number of sensors, etc., to improve the speed of diagnosis, The effect of convenient data collection and wide applicability of the method
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[0044]Embodiment: Utilize the method of the present invention to carry out fault diagnosis to the subway sliding door system that a company in Nanjing manufactures, and the flow chart is as follows figure 1 As shown, the specific steps are:
[0045] S1: Obtain the status data of the sliding door
[0046] Collect the I / O data of the door controller during each door opening and closing process through the door system, including 20 variables such as the door opening and closing train line, lock in-position switch, and close-in-position switch. The collected variable signals are digital quantities, divided into "0" and "1" two states;
[0047] S2: Structured processing of data
[0048] When collecting, when a certain variable triggers a jump, the state and time of all variables in the system will be collected at that time, so it is necessary to perform structured processing on the variables of the system to extract the trigger state and trigger time of each variable , forming s...
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