JP7574913B2 - 検出装置、検出システム及び検出方法 - Google Patents

検出装置、検出システム及び検出方法 Download PDF

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Publication number
JP7574913B2
JP7574913B2 JP2023503276A JP2023503276A JP7574913B2 JP 7574913 B2 JP7574913 B2 JP 7574913B2 JP 2023503276 A JP2023503276 A JP 2023503276A JP 2023503276 A JP2023503276 A JP 2023503276A JP 7574913 B2 JP7574913 B2 JP 7574913B2
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Japan
Prior art keywords
deterioration
construction
detection
optical fiber
fiber cable
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JP2023503276A
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Japanese (ja)
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JPWO2022185469A1 (https=
JPWO2022185469A5 (https=
Inventor
幸英 依田
忠行 岩野
洸遥 森
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NEC Corp
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NEC Corp
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    • 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
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0066—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by exciting or detecting vibration or acceleration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0091—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by using electromagnetic excitation or detection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Electromagnetism (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
JP2023503276A 2021-03-04 2021-03-04 検出装置、検出システム及び検出方法 Active JP7574913B2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2021/008374 WO2022185469A1 (ja) 2021-03-04 2021-03-04 工事検出装置、工事検出システム及び工事検出方法

Publications (3)

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JPWO2022185469A1 JPWO2022185469A1 (https=) 2022-09-09
JPWO2022185469A5 JPWO2022185469A5 (https=) 2023-11-02
JP7574913B2 true JP7574913B2 (ja) 2024-10-29

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JP2023503276A Active JP7574913B2 (ja) 2021-03-04 2021-03-04 検出装置、検出システム及び検出方法

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JP (1) JP7574913B2 (https=)
WO (1) WO2022185469A1 (https=)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7799226B2 (ja) * 2022-09-27 2026-01-15 Ｎｔｔ株式会社 推定装置、推定方法及びプログラム

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001059719A (ja) 1999-08-24 2001-03-06 Tokyo Gas Co Ltd 地中構造物損傷予防のための検知装置
JP2002152937A (ja) 2000-11-13 2002-05-24 Toshiba Corp 異常信号監視装置
JP2005241431A (ja) 2004-02-26 2005-09-08 Tokyo Gas Co Ltd 光ファイバ干渉型センサ
JP2013072800A (ja) 2011-09-28 2013-04-22 Chugoku Electric Power Co Inc:The 振動検出システム
WO2020255358A1 (ja) 2019-06-20 2020-12-24 日本電気株式会社 光ファイバセンシングシステム及び音源位置特定方法
WO2021010251A1 (ja) 2019-07-17 2021-01-21 日本電気株式会社 光ファイバセンシングシステム、光ファイバセンシング機器、及び異常判断方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001059719A (ja) 1999-08-24 2001-03-06 Tokyo Gas Co Ltd 地中構造物損傷予防のための検知装置
JP2002152937A (ja) 2000-11-13 2002-05-24 Toshiba Corp 異常信号監視装置
JP2005241431A (ja) 2004-02-26 2005-09-08 Tokyo Gas Co Ltd 光ファイバ干渉型センサ
JP2013072800A (ja) 2011-09-28 2013-04-22 Chugoku Electric Power Co Inc:The 振動検出システム
WO2020255358A1 (ja) 2019-06-20 2020-12-24 日本電気株式会社 光ファイバセンシングシステム及び音源位置特定方法
WO2021010251A1 (ja) 2019-07-17 2021-01-21 日本電気株式会社 光ファイバセンシングシステム、光ファイバセンシング機器、及び異常判断方法

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US20240125642A1 (en) 2024-04-18
JPWO2022185469A1 (https=) 2022-09-09
WO2022185469A1 (ja) 2022-09-09

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