| 摘要 |
<p>PURPOSE:To prevent the malfunction of a device to be brought to power source control, caused by a fault and to secure the operating state of the device to be brought to power source control in the case a fault is generated in a power source controller by providing a power source monitor for monitoring whether a sending-out instruction sent out to the device to be brought to power source control at every prescribed period from the power source controller exists or not. CONSTITUTION:Power source control monitors 102-1, 102-2 monitor whether a sending- out instruction for requesting to send out power source state information sent out to devices to be brought to power source control (103-1) - (103-(n)) and (104-1) - (104-(m)) from a power source controller 100 exists or not. In the case a normal sending-out instruction is not sent out even when the time corresponding to a prescribed period elapses, the power source control monitors 102-1, 102-2 decides that abnormality is generated in the power source controller 100 and detaches a power source control interface line 101 from a power source control interface line 105 or 106. In such a way, a malfunction of the device to be brought to power source control is prevented, and a state of the device to be brought to power source control can be assured, therefore, a serious fault of the system can be prevented.</p> |
