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    Physical quantity measuring system and physical quantity measuring method
    1.
    发明公开
    Physical quantity measuring system and physical quantity measuring method 审中-公开
    系统测量的物理量和方法用于测量物理量

    公开(公告)号：EP2833102A3

    公开(公告)日：2015-10-28

    申请号：EP14179270.5

    申请日：2014-07-31

    申请人： Anritsu Corporation

    发明人： Saitoh, Takanori ,  Furukawa, Hiroshi

    IPC分类号： G01D5/353

    CPC分类号： G01N21/255 ,  G01B11/16 ,  G01D5/35316 ,  G01D5/35387 ,  G01D5/3539 ,  G01K11/3206 ,  G01L1/246 ,  G01N2201/08 ,  G02B6/2932

    摘要： According to one embodiment, a physical quantity measuring system includes an optical source (12) configured to emit a measurement light to a plurality of fiber Bragg grating (FBG) lines containing FBGs connected in cascade by an optical fiber, the measurement light including a reflected wavelength of at least one of the FBGs included in the FBG lines, an optical switch (13) including a common port for receiving the measurement light from the optical source (12), and a plurality of input/output ports connected to the plurality of FBG lines, the optical switch being configured to output the measurement light, from the common port to each of the plurality of input/output ports at different time points, a wavelength separator (15) configured to receive light reflected from the respective FBGs of the FBG lines and to separate the reflected light into a plurality of component lights having predetermined wavelengths, after the measurement light is output from one of the input/output ports of the optical switch (13), and optical receivers (16) configured to receive the component lights from the wavelength separator (15) and detect light intensities of the component lights.

    SYSTEM AND METHOD FOR SENSING MANY FIBER SENSORS USING TIME-DIVISION MULTIPLEXING AND WAVELENGTH DIVISION MULTIPLEXING
    3.
    发明公开
    SYSTEM AND METHOD FOR SENSING MANY FIBER SENSORS USING TIME-DIVISION MULTIPLEXING AND WAVELENGTH DIVISION MULTIPLEXING 审中-公开
    系统和方法对于许多光纤传感器与检测和分复用波长

    公开(公告)号：EP3109601A1

    公开(公告)日：2016-12-28

    申请号：EP16176270.3

    申请日：2016-06-24

    申请人： Insight Photonic Solutions, Inc.

    发明人： ENSHER, Jason ,  MINNEMAN, Michael ,  CRAWFORD, Michael

    IPC分类号： G01D5/353

    CPC分类号： G01D5/35387 ,  E21B47/06 ,  G01D5/35316 ,  G01D5/3538 ,  G01D5/3539 ,  G01V8/24

    摘要： A system and method for discriminately measuring the response of a plurality of spatially separated fiber sensors positioned along an optical fiber using a sweep of electromagnetic radiation. Each fiber sensor affects the transmission of a particular wavelength of electromagnetic radiation and the particular wavelength affected by a given fiber sensor is dependent on at least one environmental property of the given fiber sensor. By detecting the particular wavelength affected by a given sensor, it is possible to determine the environmental property of the given sensor.

    摘要翻译： 一种用于区别地测量空间的多个响应的系统和方法分离使用电磁辐射的扫描沿着光纤定位光纤传感器。 每个光纤传感器影响的电磁辐射，并受到一个给定的光纤传感器的特定波长的特定波长的透射是依赖于给定的光纤传感器中的至少一个的环境特性。 通过检测受给定传感器的特定波长，所以能够确定矿给定传感器的环境的属性。

    ENERGY SYSTEM MONITORING
    4.
    发明公开
    ENERGY SYSTEM MONITORING 有权
    ENERGIESYSTEMÜBERWACHUNG

    公开(公告)号：EP2975366A1

    公开(公告)日：2016-01-20

    申请号：EP15174916.5

    申请日：2015-07-01

    申请人： Palo Alto Research Center, Incorporated

    发明人： HEGYI, Alex ,  KIESEL, Peter ,  RAGHAVAN, Ajay

    IPC分类号： G01D5/353

    CPC分类号： G01D5/35383 ,  G01D5/35316 ,  G01D5/3539 ,  G01L1/246 ,  G01N2201/088 ,  G01R31/3606 ,  G02B6/12009 ,  G02B6/2938

    摘要： An optical coupler includes at least one input waveguide and a plurality of output waveguides. The optical coupler spatially disperses optical signals carried on the input waveguide according to wavelength to the output waveguides. The input waveguides and the output waveguides are arranged to provide crosstalk between optical signals carried on the output waveguides.

    摘要翻译： 光耦合器包括至少一个输入波导和多个输出波导。 光耦合器将根据波长的输入波导上承载的光信号空间分散到输出波导。 输入波导和输出波导被布置成在输出波导上承载的光信号之间提供串扰。

    Multi-point measuring method of fbg sensor and multi-point measuring apparatus
    5.
    发明公开
    Multi-point measuring method of fbg sensor and multi-point measuring apparatus 审中-公开
    FBG传感器和多点测定装置的多点测量方法

    公开(公告)号：EP2600114A3

    公开(公告)日：2016-07-06

    申请号：EP12187766.6

    申请日：2012-10-09

    申请人： Hitachi, Ltd.

    发明人： Yoshida, Minoru ,  Watanabe, Masahiro ,  Hariyama, Tatsuo

    IPC分类号： G01D5/353

    CPC分类号： G01B11/165 ,  G01D5/35303 ,  G01D5/35316 ,  G01D5/35387 ,  G01D5/3539

    摘要： A multi-point measuring apparatus of FBG sensor has an optical fiber 4, a wide-band wavelength light source 9, a light-source side light modulator 10 for controlling time of a light entering into the optical fiber 4, among lights from this light source, a detector side light modulator 12 for controlling time, during which a reflection light from a diffraction grating of the optical fiber 4 penetrates through, a wavelength shift amount calculator 14 for processing a signal obtained through detection of the reflection light from this light modulator, so as to separate a signal from the optical fiber 4, a temperature/distortion calculator 15 for calculating an amount of deformation of a target to be measured from a result of this calculator, and a display portion 16 for displaying information relating to the amount of deformation of this target to be measured, and thereby providing a multi-pint measuring method and an apparatus of FBF sensor, enabling to measure the FBG sensors of plural pieces of optical fibers, without using an optical switch therein, even under the condition of applying the plural pieces of the optical fibers in one (1) piece of a transmission path.

    Multi-point measuring method of fbg sensor and multi-point measuring apparatus
    7.
    发明公开
    Multi-point measuring method of fbg sensor and multi-point measuring apparatus 审中-公开
    多点Messverfahren von FBG传感器和多点信息

    公开(公告)号：EP2600114A2

    公开(公告)日：2013-06-05

    申请号：EP12187766.6

    申请日：2012-10-09

    申请人： Hitachi Ltd.

    发明人： Yoshida, Minoru ,  Watanabe, Masahiro ,  Hariyama, Tatsuo

    IPC分类号： G01D5/353

    CPC分类号： G01B11/165 ,  G01D5/35303 ,  G01D5/35316 ,  G01D5/35387 ,  G01D5/3539

    摘要： A multi-point measuring apparatus of FBG sensor has an optical fiber 4, a wide-band wavelength light source 9, a light-source side light modulator 10 for controlling time of a light entering into the optical fiber 4, among lights from this light source, a detector side light modulator 12 for controlling time, during which a reflection light from a diffraction grating of the optical fiber 4 penetrates through, a wavelength shift amount calculator 14 for processing a signal obtained through detection of the reflection light from this light modulator, so as to separate a signal from the optical fiber 4, a temperature/distortion calculator 15 for calculating an amount of deformation of a target to be measured from a result of this calculator, and a display portion 16 for displaying information relating to the amount of deformation of this target to be measured, and thereby providing a multi-pint measuring method and an apparatus of FBF sensor, enabling to measure the FBG sensors of plural pieces of optical fibers, without using an optical switch therein, even under the condition of applying the plural pieces of the optical fibers in one (1) piece of a transmission path.

    摘要翻译： FBG传感器的多点测量装置具有光纤4，宽带波长光源9，用于控制进入光纤4的光的时间的光源侧光调制器10，来自该光的光 源，检测器侧光调制器12，用于控制来自光纤4的衍射光栅的反射光穿透的时间;波长偏移量计算器14，用于处理通过检测来自该光调制器的反射光获得的信号 分离来自光纤4的信号，用于从该计算器的结果计算要测量的目标的变形量的温度/失真计算器15以及用于显示与该计算器相关的信息的显示部分16 的待测量目标的变形，从而提供一种多品脱测量方法和FBF传感器的装置，能够测量多个FBG传感器 即使在将多根光纤应用于一条（1）传输路径的条件下，也不使用光纤开关。

    METHOD AND SYSTEM FOR FIBER-OPTIC MONITORING OF SPATIALLY DISTRIBUTED COMPONENTS
    8.
    发明授权
    METHOD AND SYSTEM FOR FIBER-OPTIC MONITORING OF SPATIALLY DISTRIBUTED COMPONENTS 有权
    方法和系统用于光纤监测空间分布式组件

    公开(公告)号：EP2223052B1

    公开(公告)日：2012-06-27

    申请号：EP07847518.3

    申请日：2007-11-29

    申请人： Prysmian S.p.A.

    发明人： GASPARI, Roberto

    IPC分类号： G01D5/353

    CPC分类号： G01K11/3206 ,  G01D5/35367 ,  G01D5/35377 ,  G01D5/3539

    摘要： A system for monitoring a plurality of components (205a, 205b) distributed in different space locations, the system comprising: at least one optical fiber path (215; 415', 415'); an optical radiation source (230) adapted to inject an optical radiation (I; I', I') into the at least one optical fiber path (215; 415', 415'); at least one first and at least one second optical branches branching from the at least one optical fiber path (215; 415', 415') and adapted to spill respective portions (I1a, I2a, I1b, I2b) of the optical radiation (I; I', I'), the first and second optical branches being adapted to be operatively associated with a respective component (205a, 205b) to be monitored. The first optical branch comprises a first optical reflector (233a, 233b) and is adapted to reflect the spilled optical radiation portion (I1a, I1b) unless the respective component (205a, 205b) at least partially breaks; the second optical branch comprises at least one passive optical attenuator (235a, 235b) adapted to be operatively coupled to the respective component (205a, 205b) to be monitored, and having an attenuation capable of changing in response to a change in operating conditions of the respective monitored component (205a, 205b) when operatively coupled thereto, and a second optical reflector (240a, 240b). An optical receiver (250) is provided, adapted to detect back-reflected optical radiation (I1ar, I2ar, I1br, I2br) reflected by the first and second optical branches. The monitoring system is adapted to recognize a position of a component of the plurality of components (205a, 205b) based on a characteristic of the back-reflected optical radiation.

    Processing data from a distributed fibre-optic interferometric sensor system
    10.
    发明授权
    Processing data from a distributed fibre-optic interferometric sensor system 有权
    处理来自分布式光纤干涉传感器系统的数据

    公开(公告)号：EP2860498B1

    公开(公告)日：2017-12-06

    申请号：EP13187914.0

    申请日：2013-10-09

    申请人： Optoplan AS

    发明人： Rønnekleiv, Erlend ,  Waagaard, Ole Henrik

    IPC分类号： G01D5/353 ,  G01B9/02 ,  G01V1/18 ,  G01H9/00

    CPC分类号： G01B9/02075 ,  G01B9/02056 ,  G01B9/0207 ,  G01D5/35335 ,  G01D5/35387 ,  G01D5/3539 ,  G01H9/004 ,  G01V1/186

    摘要： The invention relates to a method of processing data from a distributed fibre-optic interferometric sensor system for measuring a measurand, the system comprising multiple interferometric sensors. The method comprises interrogating two or more of the multiple interferometric sensors to record a raw measurement time series for each of the sensors. The method further comprises calculating a common reference time series as a measure of central tendency of the raw measurement time series from two or more reference sensors, the reference sensors being selected from the multiple interferometric sensors. Finally, the method comprises compensating at least one raw measurement time series from a measurement sensor selected from the multiple interferometric sensors with the common reference time series to produce a compensated measurement time series, the measurement sensor being configured to be sensitive to the measurand. The invention further relates to a distributed fibre-optic interferometric sensor system.