WO2008024031A1 - Capteur à fibre optique de vitesse d'écoulement de liquide et/ou de gaz - Google Patents

Capteur à fibre optique de vitesse d'écoulement de liquide et/ou de gaz Download PDF

Info

Publication number
WO2008024031A1
WO2008024031A1 PCT/RU2007/000439 RU2007000439W WO2008024031A1 WO 2008024031 A1 WO2008024031 A1 WO 2008024031A1 RU 2007000439 W RU2007000439 W RU 2007000439W WO 2008024031 A1 WO2008024031 A1 WO 2008024031A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber
sensor according
gas
liquid
optical fiber
Prior art date
Application number
PCT/RU2007/000439
Other languages
English (en)
Russian (ru)
Inventor
Yan Kuhn De Chizelle
Vladimir Vasilievich Tertychnyi
Ivan Vladimirovich Nikolin
Original Assignee
Schlumberger Holdings Limited
Schlumberger Technology B.V.
Schlumberger Canada Limited
Services Petroliers Schlumberger
Prad Research And Development N.V.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schlumberger Holdings Limited, Schlumberger Technology B.V., Schlumberger Canada Limited, Services Petroliers Schlumberger, Prad Research And Development N.V. filed Critical Schlumberger Holdings Limited
Priority to US12/377,636 priority Critical patent/US20110019177A1/en
Priority to GB0902644A priority patent/GB2454613B/en
Priority to CA2661276A priority patent/CA2661276C/fr
Publication of WO2008024031A1 publication Critical patent/WO2008024031A1/fr
Priority to NO20090766A priority patent/NO20090766L/no

Links

Classifications

    • 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
    • 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
    • G01D5/35303—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 a reference fibre, e.g. interferometric devices
    • 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
    • G01D5/35306—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 an interferometer arrangement
    • G01D5/35309—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 an interferometer arrangement using multiple waves interferometer
    • G01D5/35316—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 an interferometer arrangement using multiple waves interferometer using a Bragg gratings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/28—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by drag-force, e.g. vane type or impact flowmeter
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/661—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters using light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/02—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/26—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting optical wave

Definitions

  • This utility model relates to fiber-optic sensors for measuring fluid and / or gas velocity used in systems for measuring the flow of liquids and gases, and can be used to control the flow rate of water or natural gas, but especially in measuring systems that are designed to monitor liquid or gas flow rates in pipelines and oil / gas wells.
  • each fiber optic converter in the form of a fiber optic array, reflects a different wavelength depending on its spatial period.
  • a broadband light signal from a light source propagates along the optical fiber, and each transducer reflects a portion of this signal in a specific wavelength band.
  • the reflected waves enter the spectrum analyzer.
  • fiber-optic converters in particular, Brega's intrafiber arrays are used.
  • the disadvantage of this device is that the fiber-optic sensor used in it does not allow to control the change in the flow rate of the liquid and / or gas.
  • a fiber-optic sensor for measuring the velocity of liquid and / or gas including an optical fiber containing at least one Bragg fiber grating (US 20050145039, G Ol F 1/00, 07/07/2005).
  • a fiber-optic sensor for measuring the velocity of liquid and gas includes an optical fiber (fiber light guide) containing Bragg fiber gratings.
  • a disadvantage of the known fiber optic sensor is the lack of sensitivity to small changes in the controlled parameter.
  • the objective of this utility model is to develop and create a fiber optic sensor for measuring the velocity of a liquid and / or gas with improved characteristics.
  • a fiber optic sensor for measuring the velocity of liquid and / or gas including an optical fiber containing at least one Bragg fiber grating
  • the Bragg fiber grating is provided a concentrator of mechanical stresses arising in an optical fiber when it interacts with a stream of liquid and / or gas.
  • a distinctive feature of this utility model is that the Bragg fiber lattice is equipped with a concentrator of mechanical stresses arising in the optical fiber during its interaction with the flow of liquid and / or gas. As a result, with minor changes in the velocity of the liquid and / or gas, the mechanical stresses in the optical fiber and, accordingly, in the matrix of Bragg gratings increase significantly, which leads to a change in the frequency of the reflected wave.
  • the stress concentrator in the form of an element having a transverse dimension larger than the diameter of the optical fiber and located in the region of the Bragg grating.
  • the stress concentrator has a streamlined shape, for example, in the form of a ball or an ellipsoid.
  • the casing may be made, for example, in the form of a hollow cylinder or tube.
  • the optical fiber is provided with a protective coating, which may be made of metal or carbon, or ceramic, or plastic, or polyamide.
  • FIG. 1 is a diagram of a fiber optic sensor for measuring the velocity of a liquid and / or gas made in accordance with the present utility model
  • FIG. Figure 2 shows a possible fixation of an optical fiber (optical fiber) and a Bragg fiber grating in a casing.
  • a fiber optic sensor for measuring the velocity of a liquid and / or gas contains an optical fiber (optical fiber) 1, at least one Bragg fiber 2, and streamlined concentrators 3.
  • a fiber-optic sensor for measuring the velocity of liquid and / or gas is supplemented with protective covers 4.
  • the optical fiber 1, in which at least one Bragg fiber grating 2 (VRB) is located, is the basis of the sensor.
  • VRB 2 are sensitive elements distributed along the optical fiber 1, which are affected by the flow of liquid and / or gas, which leads to mechanical stress in the optical fiber 1 and in the VRB 2.
  • the periods of VRB 2 are stable.
  • the mechanical stress in VRB 2 is created by friction forces arising between the moving liquid and / or gas and the optical fiber 1 located in the stream.
  • the optical fiber 1 is equipped with a mechanical stress concentrator, which is located in the region where the VRB 2 is located.
  • the reflected signals from the VRB arrive at the receiving device, which can be used as a spectrum analyzer.
  • the sensor in accordance with this utility model may be part of a cable or recording system that can be installed in the pipeline permanently or only for the duration of the measurement.
  • the sensor in accordance with this utility model can be manufactured in any known manner using known technologies and does not require the creation of special equipment or accessories.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Electromagnetism (AREA)
  • Multimedia (AREA)
  • Measuring Volume Flow (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

Le présent modèle d'utilité concerne des capteurs à fibre optique de mesure du changement de vitesse d'écoulement de liquide et/ou de gaz et peut s'utiliser pour la mesure du débit de consommation d'eau ou de gaz naturel; il est surtout destiné aux systèmes industriels servant à surveiller le débit de gaz ou de liquides dans des canalisation ou des puits de gaz / de pétrole. Le capteur comprend une fibre optique comprenant au moins un réseau de fibres de Bragg, ce dernier étant muni d'au moins un concentrateur de tensions mécaniques qui apparaissent dans la fibre optique pendant son interaction avec un flux de liquide et/ou de gaz. Il est ainsi possible d'augmenter la sensibilité du capteur.
PCT/RU2007/000439 2006-08-16 2007-08-09 Capteur à fibre optique de vitesse d'écoulement de liquide et/ou de gaz WO2008024031A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US12/377,636 US20110019177A1 (en) 2006-08-16 2007-08-09 Fiber-optic transducer for fluid and/ or gas velocity measurement
GB0902644A GB2454613B (en) 2006-08-16 2007-08-09 Fiber-optic transducer for fluid and/or gas velocity measure ment
CA2661276A CA2661276C (fr) 2006-08-16 2007-08-09 Capteur a fibre optique de vitesse d'ecoulement de liquide et/ou de gaz
NO20090766A NO20090766L (no) 2006-08-16 2009-02-18 Fiberoptisk sensor for maling av vaeske og/eller gass-stromningsrate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2006129590 2006-08-16
RU2006129590 2006-08-16

Publications (1)

Publication Number Publication Date
WO2008024031A1 true WO2008024031A1 (fr) 2008-02-28

Family

ID=39107039

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2007/000439 WO2008024031A1 (fr) 2006-08-16 2007-08-09 Capteur à fibre optique de vitesse d'écoulement de liquide et/ou de gaz

Country Status (4)

Country Link
CA (1) CA2661276C (fr)
GB (1) GB2454613B (fr)
NO (1) NO20090766L (fr)
WO (1) WO2008024031A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010012924B4 (de) 2010-03-26 2013-03-28 Karlsruher Institut für Technologie Massenstromsensor und Verfahren zur Bestimmung des Massenstroms in einem Rohr

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63299011A (ja) * 1987-05-29 1988-12-06 Hitachi Cable Ltd 酸化物セラミックス系超電導体コ−ト光ファイバ
RU2087015C1 (ru) * 1989-09-13 1997-08-10 Сумитомо Электрик Индастриз, Лтд. Подводное устройство большой протяженности с волоконно-оптическими элементами (варианты)
RU2141102C1 (ru) * 1993-09-29 1999-11-10 Юнайтид Текнолоджиз Копэрейшн Диагностическая система с оптическими датчиками (варианты)
RU2000107818A (ru) * 1997-08-29 2002-01-27 Сименс Акциенгезелльшафт Полимерное оптическое волокно с многослойным защитным покрытием
RU21913U1 (ru) * 1996-04-25 2002-02-27 Самсунг Электроникс Ко., Лтд. Устройство для изготовления покрытого металлом оптического волокна и металлизированное оптическое волокно (варианты)
RU2001105908A (ru) * 1998-07-23 2003-04-10 Сидрэ Копэрейшн Волоконно-оптический кабель
RU2205374C2 (ru) * 1997-07-07 2003-05-27 Шлюмбергер Текнолоджи Б.В. Волоконно-оптические датчики давления и система измерения давления, их включающая
JP2004191303A (ja) * 2002-12-13 2004-07-08 Hitachi Cable Ltd 光ファイバ流速センサ
RU2254579C1 (ru) * 2003-11-26 2005-06-20 Федеральное Государственное унитарное предприятие Государственный научно-исследовательский институт теплоэнергетического приборостроения НИИтеплоприбор Волоконно-оптический измеритель скорости и расхода оптически непрозрачных жидкостей
US20050145039A1 (en) * 2004-01-02 2005-07-07 Fibera, Inc. Fiber optic flow meter

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63299011A (ja) * 1987-05-29 1988-12-06 Hitachi Cable Ltd 酸化物セラミックス系超電導体コ−ト光ファイバ
RU2087015C1 (ru) * 1989-09-13 1997-08-10 Сумитомо Электрик Индастриз, Лтд. Подводное устройство большой протяженности с волоконно-оптическими элементами (варианты)
RU2141102C1 (ru) * 1993-09-29 1999-11-10 Юнайтид Текнолоджиз Копэрейшн Диагностическая система с оптическими датчиками (варианты)
RU21913U1 (ru) * 1996-04-25 2002-02-27 Самсунг Электроникс Ко., Лтд. Устройство для изготовления покрытого металлом оптического волокна и металлизированное оптическое волокно (варианты)
RU2205374C2 (ru) * 1997-07-07 2003-05-27 Шлюмбергер Текнолоджи Б.В. Волоконно-оптические датчики давления и система измерения давления, их включающая
RU2000107818A (ru) * 1997-08-29 2002-01-27 Сименс Акциенгезелльшафт Полимерное оптическое волокно с многослойным защитным покрытием
RU2001105908A (ru) * 1998-07-23 2003-04-10 Сидрэ Копэрейшн Волоконно-оптический кабель
JP2004191303A (ja) * 2002-12-13 2004-07-08 Hitachi Cable Ltd 光ファイバ流速センサ
RU2254579C1 (ru) * 2003-11-26 2005-06-20 Федеральное Государственное унитарное предприятие Государственный научно-исследовательский институт теплоэнергетического приборостроения НИИтеплоприбор Волоконно-оптический измеритель скорости и расхода оптически непрозрачных жидкостей
US20050145039A1 (en) * 2004-01-02 2005-07-07 Fibera, Inc. Fiber optic flow meter

Also Published As

Publication number Publication date
CA2661276A1 (fr) 2008-02-28
CA2661276C (fr) 2013-07-23
NO20090766L (no) 2009-05-14
GB0902644D0 (en) 2009-04-01
GB2454613B (en) 2011-05-25
GB2454613A (en) 2009-05-13

Similar Documents

Publication Publication Date Title
CA2762454C (fr) Debimetre a capteur acoustique distribue
Kuang et al. Remote flood monitoring system based on plastic optical fibres and wireless motes
JPS60243586A (ja) フアイバ光変調器及びデ−タマルチプレクサ
EP3706066B1 (fr) Système pour la surveillance d'un réseau de distribution d'eau
AU2016239915B2 (en) Optical-fibre sensor device
Zheng et al. Nanofilm-coated photonic crystal fiber long-period gratings with modal transition for high chemical sensitivity and selectivity
RU59238U1 (ru) Волоконно-оптический датчик измерения скорости жидкости и/или газа
US5038620A (en) Coriolis mass flow meter
WO2008024031A1 (fr) Capteur à fibre optique de vitesse d'écoulement de liquide et/ou de gaz
CN112033569A (zh) 一种抛弃式全光纤海洋温盐深剖面测量探头
CN104864999A (zh) 一种基于kagome光纤光栅的张力传感器
US20110019177A1 (en) Fiber-optic transducer for fluid and/ or gas velocity measurement
Chang et al. Fiber optic vibration sensor based on over-coupled fused coupler
CN101509790A (zh) 用于流体和/或气体速度测量的光纤传感器
CN111947722B (zh) 体积及质量流量检测方法及装置
CN202008491U (zh) 测量范围可调且温度不敏感的光纤光栅流速传感器
RU77420U1 (ru) Универсальный волоконно-оптический модульный телеметрический комплекс, регистрирующий модуль, сенсорная головка и модуль расширения числа оптических каналов
KR100550384B1 (ko) 광섬유 센서를 이용한 소용돌이형 유량 측정 장치
Lalam et al. Field-testing of water pipeline flow monitoring based on SMS fiber optic acoustic sensor
WO2016013936A1 (fr) Capteur chimique à fibre optique
CN201177521Y (zh) 用于流体和/或气体速度测量的光纤传感器
CN113960328B (zh) 感测装置及其感测二维流速、二维加速度的方法
RU2254579C1 (ru) Волоконно-оптический измеритель скорости и расхода оптически непрозрачных жидкостей
CN213209297U (zh) 抛弃式全光纤海洋温盐深剖面测量探头
CN103344665B (zh) 一种基于光纤传感器测量阻尼材料耗能的装置及方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07834966

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2661276

Country of ref document: CA

ENP Entry into the national phase

Ref document number: 0902644

Country of ref document: GB

Kind code of ref document: A

Free format text: PCT FILING DATE = 20070809

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 0902644.4

Country of ref document: GB

NENP Non-entry into the national phase

Ref country code: RU

122 Ep: pct application non-entry in european phase

Ref document number: 07834966

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 12377636

Country of ref document: US