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:
Jun. 23, 2020
Filed:
Feb. 24, 2017
Yokogawa Electric Corporation, Musashino-shi, Tokyo, JP;
Hideo Shida, Musashino, JP;
Yokogawa Electric Corporation, Tokyo, JP;
Abstract
An optical fiber temperature distribution measurement system includes a temperature difference calculator configured to calculate a temperature difference between corresponding spatial resolution zones based on a first temperature distribution obtained by a return light from a first optical fiber part and a second temperature distribution obtained by a return light from a second optical fiber part, and an abnormality detector configured to calculate a temperature difference for evaluation for each spatial resolution zone, the temperature difference for evaluation being a sum of a temperature difference of each spatial resolution zone and a temperature difference of a spatial resolution zone adjacent thereto, and to determine that an abnormality has occurred in a roller near the spatial resolution zone when the calculated temperature difference for evaluation exceeds a reference value.
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