Patent ID: 9696220
Date: 2017-07-04
CPC Classifications: G01K

Claim:
1. A malfunction diagnosis apparatus comprising: a first temperature detection circuit that is placed inside diagnosis-target equipment; a second temperature detection circuit that is placed in a different location inside the diagnosis-target equipment from where the first temperature detection circuit is placed; a difference value calculation device that calculates a difference value between a detection value from the first temperature detection circuit and a detection value from the second temperature detection circuit; a mapping device that carries out mapping of the difference value and calculates a correction value using the frequency of the difference value; a malfunction diagnosis device that diagnoses whether or not there is a malfunction in the first temperature detection circuit and the second temperature detection circuit; and a recovery device that calculates, as a detection value of the first or second temperature detection circuit judged to be malfunctioning, a value by adding the correction value to a detection value from the first or second temperature detection circuit judged not to be malfunctioning, and transmits the calculated value to the diagnosis-target equipment.