A rail vehicle online monitoring system
A rail vehicle and monitoring system technology, applied in the field of rail vehicle online monitoring system
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[0036] Such as figure 2 Shown: the switching value acquisition module is used to collect the switching value signal of the vehicle electrical circuit, such as the switching value of the train direction relay, the main control relay, the door switch relay, and the switch of the train brake relay. The switching value acquisition module can collect multi-channel switching value signals, input 24V DC voltage, set when the input range is 18 ~ 24VDC, the system considers it to be high level, and the monitored equipment is in the working state of power, when the collection is lower than 18VDC When , the system considers it to be low level, and the monitored equipment is in the state of no power work stop. In order to avoid electrical characteristics and harsh working environment and affect the control circuit of the vehicle itself, the acquisition module uses a photocoupler TLP521 to realize an electrical-optical-electrical conversion of the signal, which plays the role of input / out...
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