Title:
A device and a method of predicting the life of an electric appliance
Document Type and Number:
Japanese Patent JP6037464
Kind Code:
B2
Abstract:
The service life of electrical equipment is predicted using a thermal history sensor mounted in the electrical equipment. At least one thermal history sensor is mounted inside or on an outer wall surface of electrical equipment. The thermal history sensor includes dissimilar metal joints, and the resistance values of the dissimilar metal joints change in response to the amount of intermetallic compound growing in the dissimilar metal joints due to the temperature inside the electrical equipment or of the outer wall thereof during operation. A determining mechanism periodically or irregularly monitors and stores in memory the resistance values of the dissimilar metal joints from the thermal history sensor, and uses the stored history of resistance values to predict the service life of the electrical equipment.
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Inventors:
Kiyono Satsuo
Ohno Eiji
Masahiro Uemura
Ohno Eiji
Masahiro Uemura
Application Number:
JP2014111792A
Publication Date:
December 07, 2016
Filing Date:
May 29, 2014
Export Citation:
Assignee:
INTERNATIONAL BUSINESS MACHINES CORPORATION
International Classes:
G01R31/00; G01K7/16; G01N17/00; G01R31/04
Domestic Patent References:
| JP2005286009A | ||||
| JP2012074706A | ||||
| JP2007113983A | ||||
| JP9271178A |
Attorney, Agent or Firm:
Takeshi Ueno
Tasaichi Tanae
Tasaichi Tanae
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