JP7318706B2 - 光ファイバセンシングシステム及び音源位置特定方法 - Google Patents

光ファイバセンシングシステム及び音源位置特定方法 Download PDF

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JP7318706B2
JP7318706B2 JP2021528583A JP2021528583A JP7318706B2 JP 7318706 B2 JP7318706 B2 JP 7318706B2 JP 2021528583 A JP2021528583 A JP 2021528583A JP 2021528583 A JP2021528583 A JP 2021528583A JP 7318706 B2 JP7318706 B2 JP 7318706B2
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sound
optical fiber
monitoring target
area
unit
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JPWO2020255358A5 (https=
JPWO2020255358A1 (https=
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崇 小島
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NEC Corp
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NEC Corp
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic or infrasonic waves
    • G01S5/20—Position of source determined by a plurality of spaced direction-finders
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic or infrasonic waves
    • G01S5/22—Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
    • G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Alarm Systems (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
JP2021528583A 2019-06-20 2019-06-20 光ファイバセンシングシステム及び音源位置特定方法 Active JP7318706B2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/024599 WO2020255358A1 (ja) 2019-06-20 2019-06-20 光ファイバセンシングシステム及び音源位置特定方法

Publications (3)

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JPWO2020255358A1 JPWO2020255358A1 (https=) 2020-12-24
JPWO2020255358A5 JPWO2020255358A5 (https=) 2022-03-08
JP7318706B2 true JP7318706B2 (ja) 2023-08-01

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JP2021528583A Active JP7318706B2 (ja) 2019-06-20 2019-06-20 光ファイバセンシングシステム及び音源位置特定方法

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US (1) US20220357421A1 (https=)
JP (1) JP7318706B2 (https=)
WO (1) WO2020255358A1 (https=)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025062509A1 (ja) * 2023-09-20 2025-03-27 日本電信電話株式会社 漏水検知システム
WO2025062510A1 (ja) * 2023-09-20 2025-03-27 日本電信電話株式会社 漏水検知システム

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114207389A (zh) * 2019-08-13 2022-03-18 日本电气株式会社 光纤传感系统、光纤传感设备和救援请求检测方法
JP7574913B2 (ja) * 2021-03-04 2024-10-29 日本電気株式会社 検出装置、検出システム及び検出方法
JP7491464B2 (ja) * 2021-03-29 2024-05-28 日本電気株式会社 空間センシング装置、空間センシングシステム及び空間センシング方法
CN113702908B (zh) * 2021-09-01 2023-06-09 哈尔滨工程大学 一种基于pdh解调技术的高精度三维声源定位系统
JP7662045B2 (ja) * 2021-10-25 2025-04-15 日本電気株式会社 監視システム、監視方法
WO2023089692A1 (ja) * 2021-11-17 2023-05-25 日本電気株式会社 異常判定方法、異常判定装置、異常判定システム及び非一時的なコンピュータ可読媒体
US20250130075A1 (en) * 2022-02-16 2025-04-24 Nec Corporation Processing apparatus, distributed acoustic sensing system, distributed acoustic sensing method, and non-transitory computer readable medium storing program

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3903221B2 (ja) 2005-06-24 2007-04-11 オプテックス株式会社 防犯センサ
JP3920742B2 (ja) 2002-08-28 2007-05-30 トヨタ自動車株式会社 異常音の音源探査方法及び音源探査装置
US20120226452A1 (en) 2009-11-13 2012-09-06 Optasense Holdings Limited Improvements in Distributed Fibre Optic Sensing
WO2013051196A1 (ja) 2011-10-05 2013-04-11 ニューブレクス株式会社 分布型光ファイバ音波検出装置
JP5294925B2 (ja) 2009-03-02 2013-09-18 株式会社熊谷組 音源の推定方法とその装置
JP5473888B2 (ja) 2010-12-22 2014-04-16 三菱重工業株式会社 漏洩検出システム
US20180332389A1 (en) 2016-06-03 2018-11-15 Faraday&Future Inc. Method and apparatus to detect and isolate audio in a vehicle using multiple microphones

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8121442B2 (en) * 2008-12-24 2012-02-21 At&T Intellectual Property I, L.P. Optical fiber surveillance topology
GB201109372D0 (en) * 2011-06-06 2011-07-20 Silixa Ltd Method for locating an acoustic source
GB201201727D0 (en) * 2012-02-01 2012-03-14 Qinetiq Ltd Indicating locations

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3920742B2 (ja) 2002-08-28 2007-05-30 トヨタ自動車株式会社 異常音の音源探査方法及び音源探査装置
JP3903221B2 (ja) 2005-06-24 2007-04-11 オプテックス株式会社 防犯センサ
JP5294925B2 (ja) 2009-03-02 2013-09-18 株式会社熊谷組 音源の推定方法とその装置
US20120226452A1 (en) 2009-11-13 2012-09-06 Optasense Holdings Limited Improvements in Distributed Fibre Optic Sensing
JP5473888B2 (ja) 2010-12-22 2014-04-16 三菱重工業株式会社 漏洩検出システム
WO2013051196A1 (ja) 2011-10-05 2013-04-11 ニューブレクス株式会社 分布型光ファイバ音波検出装置
US20180332389A1 (en) 2016-06-03 2018-11-15 Faraday&Future Inc. Method and apparatus to detect and isolate audio in a vehicle using multiple microphones

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025062509A1 (ja) * 2023-09-20 2025-03-27 日本電信電話株式会社 漏水検知システム
WO2025062510A1 (ja) * 2023-09-20 2025-03-27 日本電信電話株式会社 漏水検知システム

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WO2020255358A1 (ja) 2020-12-24
JPWO2020255358A1 (https=) 2020-12-24
US20220357421A1 (en) 2022-11-10

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