Title:
OPTICAL FIBER SENSING SYSTEM AND OPTICAL FIBER SENSING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/038611
Kind Code:
A1
Abstract:
An optical fiber sensing system according to this disclosure comprises: redundantly laid sensing optical fibers (10A1, 10A2); an execution unit (22) for using the sensing optical fibers (10A1, 10A2) to carry out sensing; a detection unit (23) for detecting the occurrence of a fault in an active-system sensing optical fiber (10A1) from among the sensing optical fibers (10A1, 10A2); and a switching unit (21) for, if the detection unit (23) detects the occurrence of a fault, switching the optical fiber used by the execution unit (22) for sensing to a standby-system sensing optical fiber (10A2) from among the sensing optical fibers (10A1, 10A2).
Inventors:
KOJIMA TAKASHI (JP)
Application Number:
PCT/JP2019/032932
Publication Date:
March 04, 2021
Filing Date:
August 23, 2019
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G01D5/26; G01D5/353; G08B13/186
Foreign References:
| JP2007309883A | 2007-11-29 | |||
| JP2015089082A | 2015-05-07 | |||
| JP2011253503A | 2011-12-15 | |||
| JP2006215649A | 2006-08-17 | |||
| JP2012226167A | 2012-11-15 | |||
| US20150228170A1 | 2015-08-13 |
Attorney, Agent or Firm:
IEIRI Takeshi (JP)
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