| 摘要 |
<p>PURPOSE:To automatically turn on a power source again by giving a power-on signal to an input/output device, which is not secured from power failure, when the change from the turning-on state to the turning-off state of a power failure interrupt signal is detected at the time of power restoration. CONSTITUTION:This power restoration control system for power failure consists of a power supply device 1 free from power failure, a central processing unit 2, an important input/output device 3 secured from power failure, an unimportant input/output device 4 which is not secured from power failure, power switches 5-7, interfaces 8-10, and a power failure/power restoration control part 11. The control part 11 informs an operator of the occurrence of a power failure interrupt signal when discriminating the occurrence of the power failure interrupt signal from the power supply device 1 free from power failure 1, and the central processing unit 2 automatically starts the processing simultaneously. Release of this interrupt signal is monitored, and a power-on signal is sent to the unimportant input/output device 4 when release of this signal is detected. If the battery voltage is reduced to a certain value with the power failure interrupt signal turned on, the power supply device 1 free from power failure breaks the AC output.</p> |
