Title:
DISTRIBUTED OPTICAL FIBER SENSOR DEVICE AND METHOD FOR CONTROLLING SAME
Document Type and Number:
WIPO Patent Application WO/2020/027393
Kind Code:
A1
Abstract:
The present invention relates to a distributed optical fiber sensor device and a method for controlling same. The sensor device comprises: a first measuring unit for applying a first wavelength variable optical signal to a sensing optical fiber and detecting Rayleigh scattered light which is scattered from the sensing optical fiber; a second measuring unit for detecting Brillouin scattered light which is generated in the sensing optical fiber when a probe light and a pump light are incident through opposite ends of the sensing optical fiber and progress in opposite directions; and a signal processing unit for controlling the operations of the first measuring unit and the second measuring unit, and obtaining a strain and a temperature of the sensing optical fiber according to a position from the Rayleigh scattered light detected by the first measuring unit and the Brillouin scattered light detected by the second measuring unit.
Inventors:
KIM YOUNG HO (KR)
RHO BYUNG SUP (KR)
KIM MYOUNG JIN (KR)
KIM JUN SU (KR)
KIM YOUNG WOONG (KR)
KIM HUI OON (KR)
RHO BYUNG SUP (KR)
KIM MYOUNG JIN (KR)
KIM JUN SU (KR)
KIM YOUNG WOONG (KR)
KIM HUI OON (KR)
Application Number:
PCT/KR2018/016711
Publication Date:
February 06, 2020
Filing Date:
December 27, 2018
Export Citation:
Assignee:
KOREA PHOTONICS TECH INST (KR)
International Classes:
G01K11/32; G01D21/02; G01L1/24; G02B6/02
Foreign References:
| JP2010190728A | 2010-09-02 | |||
| KR20160150458A | 2016-12-30 | |||
| JP5322162B2 | 2013-10-23 | |||
| JP2018054551A | 2018-04-05 | |||
| KR101334364B1 | 2013-12-05 |
Attorney, Agent or Firm:
LEE, Jea Ryang (KR)
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