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:
Sep. 08, 2026
Filed:
Apr. 02, 2024
Applicant:
Yokogawa Electric Corporation, Tokyo, JP;
Inventor:
Yoshihiro Kumagai, Tokyo, JP;
Assignee:
Yokogawa Electric Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01M 11/00 (2006.01); G01D 5/353 (2006.01); G01K 11/322 (2021.01);
U.S. Cl.
CPC ...
G01M 11/319 (2013.01); G01D 5/35364 (2013.01); G01K 11/322 (2021.01);
Abstract
An optical fiber characteristic measuring device acquires a Brillouin Frequency Shift (BFS) from a measuring position of an optical fiber disposed in an object to be measured, generates temperature distribution in a longitudinal direction of the optical fiber by converting the acquired BFS into a temperature, calculates a physical property change of the optical fiber based on the generated temperature distribution, and corrects the measuring position of the optical fiber based on the calculated physical property change.