Cooling device with temperature sensor failure detection

摘要

Disclosed is a cooling device which can perform cooling with suppressed power consumption and noise even when temperature sensor is in failure without increasing cost.;The cooling device includes a temperature estimation unit which, if a failure is detected in at least one of heat source temperature sensors (HSTSs) measuring temperature of the heat sources (HSs), estimates a value to have been measured by the failed HSTS based on measured values by the HSTSs not in failure, a measured value by an exhaust temperature sensor measuring an exhaust temperature which is temperature of an air outlet for discharging heat generated by HSs from a housing containing the HSs, and information representing a temperature distribution characteristic within the housing; and a rotational frequency calculation unit which calculates a rotational frequency of a cooling fan which rotates based on the estimated value and the measured values by the HSTSs not in failure.

主权项

1. A cooling device comprising:
a memory storing instructions; a processor configured to execute the instructions to:
obtain measured temperature values generated by a plurality of heat source temperature sensors and an exhaust temperature sensor, wherein:
the plurality of heat source temperature sensors are configured to measure temperatures of a plurality of heat sources contained in a housing, andthe exhaust temperature sensor is configured to measure an exhaust temperature which is a temperature of an air outlet for discharging heat generated by the plurality of heat sources;when detecting a heat source temperature sensor has failed, access information representing a temperature distribution characteristic within the housing, wherein the information includes predetermined temperature values of the plurality of heat source temperature sensors and the exhaust temperature sensor, the predetermined temperature values being measured in advance or derived by calculation;extract, from the information representing the temperature distribution characteristic, a record including:
predetermined temperature values which are the same as, or nearest to, the measured temperature values generated by heat source temperature sensors not in failure and the exhaust temperature sensor, anda corresponding predetermined temperature value of the failed heat source temperature sensor;determine an estimated temperature value of the failed heat source temperature sensor to be the corresponding predetermined temperature value in the record; andcalculate a rotational frequency of a cooling fan which rotates in the housing, based on the estimated temperature value of the failed heat source temperature sensor and the measured values generated by the heat source temperature sensors not in failure.