Title:
LIFETIME DETECTION DEVICE AND LIFETIME DETECTION METHOD FOR COOLING FAN
Document Type and Number:
Japanese Patent JP2015031667
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To detect a lifetime of a cooling fan.SOLUTION: A lifetime detection device 1 comprises a temperature sensors 5 for measuring temperature in the vicinity of heat generation components 3 and a control unit 6 for detecting lifetime of cooling fans 4 which cool the heat generation components 3 on the basis of values measured by the temperature sensors 5. The temperature sensors 5 are provided at the respective heat generation components 3 so as to match relative positions with respect to the heat generation components 3 of the same kinds used for the same purpose. On the basis of the values measured by the temperature sensors 5, the control unit 6 calculates a temperature difference between respective measurement points A to C and determines that, if any temperature difference between the measurement points A to C exceeds a predetermined threshold, the cooling fan 4 which cools a heat generation component 3 having a high measured temperature has come to the end of its lifetime.
Inventors:
FUJIYOSHI YUJI
Application Number:
JP2013163701A
Publication Date:
February 16, 2015
Filing Date:
August 07, 2013
Export Citation:
Assignee:
MEIDENSHA ELECTRIC MFG CO LTD
International Classes:
G01M99/00; G01K1/14; G01K3/14
Attorney, Agent or Firm:
Hiromichi Kobayashi
Hidehisa Uzawa
Hashimoto 剛
Hidehisa Uzawa
Hashimoto 剛