Title:
OPTICAL FIBER SENSING SYSTEM AND SOUND SOURCE POSITION IDENTIFYING METHOD
Document Type and Number:
WIPO Patent Application WO/2020/255358
Kind Code:
A1
Abstract:
An optical fiber sensing system according to this disclosure comprises: optical fiber (10) that is disposed so as to face in a plurality of directions and is for detecting sound produced in an area under observation; a reception unit (20) for receiving, from the optical fiber (10), an optical signal having the sound superposed thereon; and an identifying unit (30) for using the optical signal to analyze the distribution of the sound detected by the optical fiber (10) and identifying a production position where the sound was produced on the basis of the analyzed sound distribution.
Inventors:
KOJIMA TAKASHI (JP)
Application Number:
PCT/JP2019/024599
Publication Date:
December 24, 2020
Filing Date:
June 20, 2019
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G01H9/00; G01S3/808
Domestic Patent References:
| WO2013051196A1 | 2013-04-11 |
Foreign References:
| US20120226452A1 | 2012-09-06 | |||
| JP5294925B2 | 2013-09-18 | |||
| JP3903221B2 | 2007-04-11 | |||
| JP3920742B2 | 2007-05-30 | |||
| JP5473888B2 | 2014-04-16 | |||
| US20180332389A1 | 2018-11-15 |
Attorney, Agent or Firm:
IEIRI Takeshi (JP)
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