| 摘要 |
PROBLEM TO BE SOLVED: To distinguish an abnormality at a detecting means from an abnormality at an A/D converter in a detecting apparatus, provided with detecting means such as a current sensor or the like and the A/D converter. SOLUTION: This detecting apparatus detects a current amount set to a predetermined reference value by a current sensor 12, outputs the amount as an electrical signal and converts the output signal into a digital signal by a first and a second A/D converters 22 and 26. The digital signal after conversion is compared with a reference output value stored in a memory 32 by an abnormality-detecting part 30 in a CPU. When either of actual output values from the first A/D converter 22 and the second A/D converter 26 deviates from the reference output value, it is discriminated that an abnormality has taken place at one of the converters 22, 26. When both output values from the converters 22 and 26 deviate from the reference output value, it is discriminated that an abnormality has taken place in the current sensor 12. |
