US 2014/0076513 A1 · COOLING DEVICE, ELECTRONIC APPARATUS AND COOLING METHOD

Abstract

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.

Claims7

Dependent claims

A cooling device comprising:

a temperature estimation unit which, if a failure is detected in at least any one of a plurality of heat source temperature sensors measuring temperature of respective ones of a plurality of heat sources, estimates a temperature value to have been measured by the failed heat source temperature sensor, based on measured values by the heat source temperature sensors not in failure, a measured value by an exhaust temperature sensor for measuring an exhaust temperature which is temperature of an air outlet for discharging heat generated by the plurality of heat sources from a housing containing the plurality of heat sources, 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 in the housing, based on the estimated temperature value and the measured values by the heat source temperature sensors not in failure.

An electronic apparatus comprising:

a plurality of heat source temperature sensors which measure temperature of respective ones of a plurality of heat sources;
an exhaust temperature sensor which measures an exhaust temperature, which is temperature of an air outlet for discharging heat generated by the plurality of heat sources from a housing containing the plurality of heat sources;
information representing a temperature distribution characteristic within the housing;
a temperature estimation unit which, if a failure is detected in at least any one of the heat source temperature sensors, estimates a temperature value to have been measured by the failed heat source temperature sensor, based on measured values by the heat source temperature sensors not in failure, a measured value by the exhaust temperature sensor measuring an exhaust temperature and the information representing a temperature distribution characteristic;
and
a rotational frequency calculation unit which calculates a rotational frequency of a cooling fan rotating in the housing, based on the temperature value estimated by the temperature estimation unit and the measured values by the heat source temperature sensors not in failure.

3 more elements

Dependencies are inferred from the claim text.

Cooling device, electronic apparatus and cooling method

Life of this patent

Cooling device, electronic apparatus and cooling method

Life of this patent

Abstract

Claims7