| 摘要 |
<P>PROBLEM TO BE SOLVED: To determine vehicle collision even during a period after ignition is turned off until electric power supply to a control part for a high voltage system relay is stopped. <P>SOLUTION: A power supply system 70 supplying electric power to a main microcomputer 50a and an airbag microcomputer 42a comprises: a low voltage battery 72; a power supply relay 74 connecting and interrupting wiring MAIN to which the low voltage battery 72 is connected and wiring IGCT to which the main microcomputer 50a is connected; a power supply relay 76 connecting and interrupting the wiring MAIN and wiring IG2; and an OR circuit 80 supplying electric power to the airbag microcomputer 42a when at least one of the power supply relay 74 and the power supply relay 76 is turned on and not supplying electric power to the airbag microcomputer 42a when both of the power supply relay 74 and the power supply relay 76 are turned off. <P>COPYRIGHT: (C)2013,JPO&INPIT |
