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:
Mar. 22, 2016
Filed:
Nov. 18, 2011
Keisuke Ueta, Susono, JP;
Akinori Maruyama, Susono, JP;
Yoshihide Nakamura, Susono, JP;
Yoshinori Ikuta, Susono, JP;
Keisuke Ueta, Susono, JP;
Akinori Maruyama, Susono, JP;
Yoshihide Nakamura, Susono, JP;
Yoshinori Ikuta, Susono, JP;
YAZAKI CORPORATION, Tokyo, JP;
Abstract
A load circuit protective device calculates increasing temperature of wire of a load circuit with a first predetermined sampling period (dt) determined by a clock signal for normal operation when a semiconductor relay (Q) is on to estimate the temperature of the wire. The temperature of the wire is therefore estimated with high accuracy. Moreover, when the semiconductor relay (Q) is off, the load circuit protective device calculates decreasing temperature of the wire of the load circuit with a second predetermined sampling period (dt) to estimate the temperature of the wire. The second predetermined sampling period (dt) is determined by a clock signal for power-saving operation and is longer than the first predetermined sampling period (dt). Accordingly, the calculation times of the temperature can be reduced, and the power consumption is therefore reduced.