Patent ID: 11938980
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 10:
11. An abnormality detection method in a signal control device mounted to a train, the abnormality detection method comprising:
a first step of a controller making a signal stop request and a signal output request to an output unit before operation of the train starts;
a second step of the output unit outputting or stopping a signal to an external device mounted to the train in accordance with a request of the controller;
a third step of a readback circuit owned by the output unit detecting whether or not the signal is outputted from the output unit; and
a fourth step of the controller acquiring a detection result of the readback circuit while each of the signal stop request and the signal output request is performed and detecting abnormality of the output unit using the detection result.