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Title:
OPTICAL FIBER SENSING SYSTEM, OPTICAL FIBER SENSING EQUIPMENT, AND ABNORMALITY ASSESSMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2021/010251
Kind Code:
A1
Abstract:
The optical fiber sensing system according to the present disclosure comprises: an optical fiber (10) that detects vibration; a reception unit (21) that receives an optical signal on which the vibration detected by the optical fiber (10) is superposed; and an abnormality assessment unit (22) that assesses whether a vibration pattern of the optical signal is already known, and that, when the vibration pattern of the optical signal is not already known, assesses whether an abnormality has occurred.

Inventors:
YODA YUKIHIDE (JP)
OGURA NAOTO (JP)
AONO YOSHIAKI (JP)
Application Number:
PCT/JP2020/026687
Publication Date:
January 21, 2021
Filing Date:
July 08, 2020
Export Citation:
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Assignee:
NEC CORP (JP)
International Classes:
G01H9/00
Domestic Patent References:
WO2019022084A12019-01-31
Foreign References:
JP2017142153A2017-08-17
JP2011203116A2011-10-13
JPH05180690A1993-07-23
Attorney, Agent or Firm:
IEIRI Takeshi (JP)
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