POWER SUPPLY CONTROL DEVICE TO BE MOUNTED ON VEHICLE AND POWER CONTROL METHOD FOR ELECTRIC EQUIPMENT MOUNTED ON THE VEHICLE

摘要

PROBLEM TO BE SOLVED: To supply electric power to important electric equipment for a long time even in the case where an abnormality occurs in a vehicle. SOLUTION: When a sensor unit 101 detects the generation of abnormality of a vehicle, the sensor unit 101 converts the degree of abnormality to a numeric value for output. In each priority setting switch arranged in electric equipment 105-108, the respective priority of the electric equipment 105-108 is previously set on the basis of the priority setting signal 110. When the generation of abnormality of a vehicle is detected by the sensor unit 101, the abnormality level signal 109 is input to each power supply control unit 102 arranged in the electric equipment 105-108, and the power supply control unit 12 compares a degree of abnormality indicated by the abnormality level signal 109 with the priority, which is set by the priority setting switch, and outputs the power supply switching signal 104. A power source unit 103 controls the power supply to the electric equipments 105-108 in response to the power supply switching signal 104.