JP7315014B2 - 光ファイバセンシングシステム、光ファイバセンシング方法、及び光ファイバセンシング装置 - Google Patents

光ファイバセンシングシステム、光ファイバセンシング方法、及び光ファイバセンシング装置 Download PDF

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Publication number
JP7315014B2
JP7315014B2 JP2021550955A JP2021550955A JP7315014B2 JP 7315014 B2 JP7315014 B2 JP 7315014B2 JP 2021550955 A JP2021550955 A JP 2021550955A JP 2021550955 A JP2021550955 A JP 2021550955A JP 7315014 B2 JP7315014 B2 JP 7315014B2
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Japan
Prior art keywords
optical fiber
sensing
sensing information
monitoring target
optical signal
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Japanese (ja)
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JPWO2021070222A5 (https=
JPWO2021070222A1 (https=
Inventor
忠行 岩野
理 石井
啓徳 北原
義明 青野
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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
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
    • G01D5/35338—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using other arrangements than interferometer arrangements
    • G01D5/35354—Sensor working in reflection
    • G01D5/35358—Sensor working in reflection using backscattering to detect the measured quantity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/073—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an out-of-service signal

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)
  • Emergency Alarm Devices (AREA)
  • Optical Transform (AREA)
  • Alarm Systems (AREA)
JP2021550955A 2019-10-07 2019-10-07 光ファイバセンシングシステム、光ファイバセンシング方法、及び光ファイバセンシング装置 Active JP7315014B2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/039486 WO2021070222A1 (ja) 2019-10-07 2019-10-07 光ファイバセンシングシステム、光ファイバセンシング方法、及び光ファイバセンシング装置

Publications (3)

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JPWO2021070222A1 JPWO2021070222A1 (https=) 2021-04-15
JPWO2021070222A5 JPWO2021070222A5 (https=) 2022-05-25
JP7315014B2 true JP7315014B2 (ja) 2023-07-26

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JP2021550955A Active JP7315014B2 (ja) 2019-10-07 2019-10-07 光ファイバセンシングシステム、光ファイバセンシング方法、及び光ファイバセンシング装置

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US (1) US12117336B2 (https=)
JP (1) JP7315014B2 (https=)
WO (1) WO2021070222A1 (https=)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12467822B2 (en) * 2020-08-31 2025-11-11 Nec Corporation Utility pole deterioration discrimination device and method
US11733070B2 (en) * 2021-03-03 2023-08-22 Nec Corporation Street light operating status monitoring using distributed optical fiber sensing
US12078528B2 (en) * 2021-07-22 2024-09-03 Nec Corporation Fiber sensing using supervisory path of submarine cables
US11676465B1 (en) * 2021-08-04 2023-06-13 The United States Of America As Represented By The Secretary Of The Navy Fire detection and conflagration event monitoring and diagnosis system
WO2023021598A1 (ja) * 2021-08-18 2023-02-23 日本電気株式会社 情報処理装置、情報処理方法、コンピュータ可読媒体、及び点検システム
US20240427912A1 (en) * 2021-09-28 2024-12-26 Nec Corporation Data providing system, data providing apparatus, and data providing method
WO2023073914A1 (ja) * 2021-10-29 2023-05-04 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、及び光ファイバセンシング方法
US20240411911A1 (en) * 2021-11-08 2024-12-12 Nec Corporation Data providing system, data providing apparatus, and data providing method
WO2023209758A1 (ja) * 2022-04-25 2023-11-02 日本電気株式会社 センシングシステム、センシング機器、及びセンシング方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002269656A (ja) 2001-03-12 2002-09-20 Foundation Of River & Basin Integrated Communications Japan 河川情報提供システム
JP2003232043A (ja) 2002-02-06 2003-08-19 Oki Electric Ind Co Ltd 土砂異常検出装置、土砂異常検出システム、及び土砂異常検出方法
US20050082467A1 (en) 2003-10-21 2005-04-21 Guy Mossman Optical fiber based sensor system suitable for monitoring remote aqueous infiltration

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0620177A (ja) * 1992-07-03 1994-01-28 Mitsubishi Electric Corp 繰り返し操作機構の異常検出装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002269656A (ja) 2001-03-12 2002-09-20 Foundation Of River & Basin Integrated Communications Japan 河川情報提供システム
JP2003232043A (ja) 2002-02-06 2003-08-19 Oki Electric Ind Co Ltd 土砂異常検出装置、土砂異常検出システム、及び土砂異常検出方法
US20050082467A1 (en) 2003-10-21 2005-04-21 Guy Mossman Optical fiber based sensor system suitable for monitoring remote aqueous infiltration

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US12117336B2 (en) 2024-10-15
JPWO2021070222A1 (https=) 2021-04-15
WO2021070222A1 (ja) 2021-04-15
US20220397449A1 (en) 2022-12-15

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