CPC G01K 3/14 (2013.01) [G01K 3/005 (2013.01); H02H 1/0007 (2013.01); H02H 5/04 (2013.01)] | 11 Claims |
1. A temperature abnormality detection system that detects a temperature abnormality of a target device installed in a board casing of a board; the temperature abnormality detection system comprising:
a first temperature sensor that includes a radiation temperature sensor installed in the board casing and measures a first temperature indicated by the target device by the radiation temperature sensor;
a second temperature sensor that measures a second temperature indicated by ambient air around the target device; and
an abnormality determination unit that calculates a temperature difference between the first temperature and the second temperature, and determines that a temperature abnormality of the target device has occurred when the temperature difference becomes a predetermined threshold value or more.
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