DISTRIBUTION POWER SUPPLY DEVICE, AND FAILURE RECOVERY METHOD OF DISTRIBUTION POWER SUPPLY

摘要

PPROBLEM TO BE SOLVED: To restart the whole of a device even if a part of a distribution power supply is restarted by the instantaneous interruption of primary-side power, in the case that a distribution power supply system is employed, and to make the device recover from a failure. PSOLUTION: This distribution power supply device is assembled into a device composed of a plurality of PCBs 101 (102, 110), and constituted by arranging an on-board power supply 103 that feeds individual secondary power to the PCBs 101 by the feed of the primary-side power. Each PCB 101 comprises: a primary-side power supply monitoring circuit 104 that detects a voltage abnormality of the primary-side power fed to the on-board power supply 103; an in-PCB power supply monitoring circuit 213 that restarts the PCBs 101 when the voltage abnormality of the primary-side power is detected by the primary-side power supply monitoring circuit 104; and a pulse generation circuit 204 that transmits restarting signals to the other PCBs 102, 110 in the device when the voltage abnormality of the primary-side power is detected by the primary-side power supply monitoring circuit 104. PCOPYRIGHT: (C)2008,JPO&INPIT