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

Claim 15:
16. The abnormality detection method according to claim 11, wherein
the signal control device includes two or more output units each equal in configuration to the output unit,
in the first step, the controller makes the signal stop request and the signal output request to the output units before operation of the train starts,
in the second step, the output units each output or stop the signal in accordance with a request of the controller,
in the third step, each of readback circuits owned by the output units detects whether or not the signal is outputted from the output unit, and
in the fourth step, the controller acquires detection results of the readback circuits while each of the signal stop request and the signal output request is performed, and detects abnormality of any of the output units using two or more detection results.