The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 09, 2019
Filed:
May. 24, 2016
Applicant:
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Inventors:
Hiroshi Nakao, Yamato, JP;
Yu Yonezawa, Sagamihara, JP;
Takahiko Sugawara, Kawasaki, JP;
Yoshiyasu Nakashima, Kawasaki, JP;
Assignee:
FUJITSU LIMITED, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/02 (2006.01); G01R 31/01 (2006.01); H02M 1/32 (2007.01); H02M 1/42 (2007.01); H02M 3/335 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
G01R 31/028 (2013.01); G01R 31/016 (2013.01); H02M 1/32 (2013.01); H02M 1/4225 (2013.01); H02M 3/33523 (2013.01); H02M 2001/007 (2013.01); Y02B 70/126 (2013.01);
Abstract
A capacitor life diagnosis device includes: a first fluctuation detecting unit configured to detect a maximum value of fluctuation in output voltage of a first capacitor every fixed time; and an output unit configured to predict a residual life of the first capacitor on the basis of temporal transition of the maximum value of fluctuation in the output voltage detected by the first fluctuation detecting unit, and output a signal indicating the residual life of the first capacitor.