| 摘要 |
PROBLEM TO BE SOLVED: To reduce the input error in the sensing signal of a sensor and enhance the controllability based on the sensing result of the sensor. SOLUTION: A car-mounted electronic control device is equipped with resistances R1 and R2 ni the first monitor device to monitor4 the supply voltage VCC as reference voltage to an A/D converter 4 and resistances R3 and R4 in the second monitor circuit to monitor the buffer output voltage of a buffer circuit 7 supplied to the sensor 2 as a supply voltage AVCC, in which a MPU 3 corrects the sensing signal of the sensor given to the A/D converter 4 on the basis of the supply voltage and the buffer output voltage monitored by the respective monitor circuits. COPYRIGHT: (C)2007,JPO&INPIT
|
