US 11,938,980 B2
Signal control device and abnormality detection method
Ken Shibata, Tokyo (JP); Tetsuo Komura, Tokyo (JP); Hiromi Goda, Tokyo (JP); Hiroshi Jota, Tokyo (JP); and Kentaro Hoshino, Tokyo (JP)
Assigned to MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
Appl. No. 16/960,195
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Jan. 16, 2018, PCT No. PCT/JP2018/001064
§ 371(c)(1), (2) Date Jul. 6, 2020,
PCT Pub. No. WO2019/142245, PCT Pub. Date Jul. 25, 2019.
Prior Publication US 2021/0061325 A1, Mar. 4, 2021
Int. Cl. B61L 15/00 (2006.01); G06F 3/14 (2006.01)
CPC B61L 15/0081 (2013.01) [B61L 15/0063 (2013.01); B61L 15/0072 (2013.01); B61L 15/009 (2013.01); G06F 3/14 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A signal control device mounted to a train, the signal control device comprising:
an output unit to output a signal to an external device mounted to the train; and
a controller to control whether or not to cause the output unit to output the signal, wherein
the output unit includes a readback circuit to detect whether or not the signal is outputted from the output unit, and
the controller makes a signal stop request and a signal output request to the output unit before operation of the train starts, acquires a detection result of the readback circuit while each of the signal stop request and the signal output request is performed, and detects abnormality of the output unit using the detection result.