Title:
COMPRESSIVE-SENSING-BASED BRILLOUIN FREQUENCY DOMAIN DISTRIBUTION TYPE OPTICAL FIBER SENSOR DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/019227
Kind Code:
A1
Abstract:
The present invention relates to a compressive-sensing-based Brillouin frequency domain distribution type optical fiber sensor device, comprising: a probe-light generation unit that generates probe light using light output by a light source unit and transmits the probe light through an end of a sensing optical fiber; a compressive-sensing-light generation unit that generates compressive-sensing light having a composite signal waveform, in which a plurality of different frequency signals are compressed, using light output by the light source unit; an optical circulator that receives the compressive-sensing light through an input terminal and transmits same to an output terminal connected to the other end of the sensing optical fiber and that outputs, to a detection terminal, light scattered from the sensing optical fiber and incident through the output terminal; a photodetector unit that detects Brillouin scattered light received through the detection terminal; a compressive-sensing-signal generation unit that generates a compressive-sensing signal so as to generate compressive-sensing light; and a signal processing unit that controls the compressive-sensing-signal generation unit and calculates positional temperatures or strains of the sensing optical fiber from a signal output from the photodetector unit.
Inventors:
KIM MYOUNG JIN (KR)
KIM YOUNG HO (KR)
LEE JOO YOUNG (KR)
JUNG HYO YOUNG (KR)
KIM HUI OON (KR)
KIM HYO JONG (KR)
SHIN JUN GUN (KR)
KIM YOUNG HO (KR)
LEE JOO YOUNG (KR)
JUNG HYO YOUNG (KR)
KIM HUI OON (KR)
KIM HYO JONG (KR)
SHIN JUN GUN (KR)
Application Number:
PCT/KR2022/014213
Publication Date:
January 25, 2024
Filing Date:
September 23, 2022
Export Citation:
Assignee:
KOREA PHOTONICS TECH INST (KR)
International Classes:
G01D5/353; G01K11/322; G01L1/24; G06N3/08
Foreign References:
| KR102059502B1 | 2019-12-26 | |||
| KR101447090B1 | 2014-11-03 | |||
| KR20170043718A | 2017-04-24 | |||
| KR20110075680A | 2011-07-06 |
Other References:
ZHOU DA-PENG, PENG WEI, CHEN LIANG, BAO XIAOYI: "Brillouin optical time-domain analysis via compressed sensing", OPTICS LETTERS, OPTICAL SOCIETY OF AMERICA, US, vol. 43, no. 22, 15 November 2018 (2018-11-15), US , pages 5496 - 5499, XP093130371, ISSN: 0146-9592, DOI: 10.1364/OL.43.005496
Attorney, Agent or Firm:
LEE, Jea Ryang (KR)
Download PDF:
Previous Patent: METHOD FOR DETECTING MALICIOUS URLS
Next Patent: SALES MANAGEMENT SYSTEM ACCORDING TO PATENT FOR SPONSORSHIP CALL SALES BUSINESS
Next Patent: SALES MANAGEMENT SYSTEM ACCORDING TO PATENT FOR SPONSORSHIP CALL SALES BUSINESS