JPWO2021070222A1 - - Google Patents
Info
- Publication number
- JPWO2021070222A1 JPWO2021070222A1 JP2021550955A JP2021550955A JPWO2021070222A1 JP WO2021070222 A1 JPWO2021070222 A1 JP WO2021070222A1 JP 2021550955 A JP2021550955 A JP 2021550955A JP 2021550955 A JP2021550955 A JP 2021550955A JP WO2021070222 A1 JPWO2021070222 A1 JP WO2021070222A1
- Authority
- JP
- Japan
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
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- 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
Landscapes
- 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)
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)
| Publication Number | Publication Date |
|---|---|
| JPWO2021070222A1 true JPWO2021070222A1 (https=) | 2021-04-15 |
| JPWO2021070222A5 JPWO2021070222A5 (https=) | 2022-05-25 |
| JP7315014B2 JP7315014B2 (ja) | 2023-07-26 |
Family
ID=75437036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US12117336B2 (https=) |
| JP (1) | JP7315014B2 (https=) |
| WO (1) | WO2021070222A1 (https=) |
Families Citing this family (9)
| 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 (4)
| 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 |
| 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 |
-
2019
- 2019-10-07 US US17/765,074 patent/US12117336B2/en active Active
- 2019-10-07 WO PCT/JP2019/039486 patent/WO2021070222A1/ja not_active Ceased
- 2019-10-07 JP JP2021550955A patent/JP7315014B2/ja active Active
Patent Citations (4)
| 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7315014B2 (ja) | 2023-07-26 |
| US12117336B2 (en) | 2024-10-15 |
| WO2021070222A1 (ja) | 2021-04-15 |
| US20220397449A1 (en) | 2022-12-15 |
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