| 摘要 |
PROBLEM TO BE SOLVED: To provide a control system that further improves safety of self-weight-lowering switching when disturbed during lowering operation of a crossing bar in a crossing gate than a conventional one. SOLUTION: A double redundant control system 1 is composed of a CPU 3, which executes control to a motor driving circuit 2 for operating the crossing bar, and an electric circuit 4 that achieves prescribed operation in the motor driving circuit 2 based on prescribed control by the CPU 3 even when some abnormalities occur in the prescribed control by the CPU 3 or in the prescribed operation in the motor driving circuit 2 based on the prescribed control by the CPU 3. It is possible to use a CR circuit as the electric circuit. COPYRIGHT: (C)2008,JPO&INPIT
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