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    Method and apparatus for disturbance detection
    11.
    发明授权
    Method and apparatus for disturbance detection 失效
    干扰检测方法和装置

    公开(公告)号：US08705020B2

    公开(公告)日：2014-04-22

    申请号：US13016814

    申请日：2011-01-28

    Applicant: Zhizhong Zhuang ,  Yuri Zadorozhny ,  Francesco Anthony Annetta ,  Jay S. Patel

    Inventor： Zhizhong Zhuang ,  Yuri Zadorozhny ,  Francesco Anthony Annetta ,  Jay S. Patel

    IPC: G01N21/00

    CPC classification number: G01M11/33 ,  G01D5/35361 ,  G01K11/32 ,  G01M5/0025 ,  G01M5/0033 ,  G01M5/0066 ,  G01M5/0091 ,  G01N2201/0886

    Abstract: A sweep sensor may include a signal source, a propagation medium, and a detector. By transmitting an interrogating signal from the signal source into the propagation medium, detectable disturbances along the medium can physically alter the characteristics of the medium, which may cause a measurable change in the backscattered signal at the detector. Based on the change, it may be possible to locate the geographic origins of the physical disturbances along the propagation medium, or to determine the nature of the disturbances, or both. For example, it is generally possible to estimate the approximate distance between the detector and the disturbance given the time required to obtain the backscattered signal and the velocity of the signal source in the propagation medium. Further, in some embodiments, it is possible to quantify the amount of disturbance.

    Abstract translation: 扫描传感器可以包括信号源，传播介​​质和检测器。 通过从信号源传输询问信号到传播介质中，沿着介质的可检测的扰动可以物理地改变介质的特性，这可能导致检测器处的​​反向散射信号的可测量的变化。 基于这种变化，可以沿着传播介质定位物理扰动的地理起源，或者确定干扰的性质，或者两者。 例如，通常可以估计在获得反向散射信号所需的时间和传播介质中的信号源的速度之间的检测器和干扰之间的近似距离。 此外，在一些实施例中，可以量化扰动的量。

    REFLECTIVE SENSOR FOR DETECTION OF MATERIAL DEGRADATION
    12.
    发明申请
    REFLECTIVE SENSOR FOR DETECTION OF MATERIAL DEGRADATION 有权
    用于检测材料降解的反射传感器

    公开(公告)号：US20140092389A1

    公开(公告)日：2014-04-03

    申请号：US14043149

    申请日：2013-10-01

    Applicant: PD-LD, Inc.

    Inventor： Vladimir Sinisa Ban ,  Boris Leonidovich Volodin ,  Grzegorz Drozdz ,  Uri Abrams

    IPC: G01N21/55

    CPC classification number: G01N21/55 ,  G01D5/268 ,  G01D5/35367 ,  G01M5/0008 ,  G01M5/0033 ,  G01M11/083 ,  G01M11/085 ,  G01N17/04 ,  G01N2201/0886

    Abstract: A sensor for detecting material degradation may include an optical fiber and a housing through which the optical fiber extends. An end cap may be affixed to an end of the housing. Light provided through the optical fiber may be reflected off of the end cap back through the optical fiber. The end cap may be made of a material of interest, and may be situated in an environment wherein the material of interest is present. A light source may provide input light through the optical fiber. A portion of the input light may be reflected off of the end cap. A light receptor may receive the reflected light via the optical fiber. A processing unit may be adapted to compare a measured intensity of the reflected light to a threshold, and to initiate an alarm condition if the measured intensity is below the threshold.

    Abstract translation: 用于检测材料劣化的传感器可以包括光纤和光纤延伸穿过的外壳。 端盖可以固定到壳体的端部。 通过光纤提供的光可以通过光纤从端帽反射离开。 端盖可以由感兴趣的材料制成，并且可以位于存在感兴趣的材料的环境中。 光源可以通过光纤提供输入光。 输入光的一部分可以从端盖反射出来。 光接收器可以经由光纤接收反射光。 处理单元可以适于将测得的反射光强度与阈值进行比较，并且如果测量的强度低于阈值则启动报警条件。

    Distributed optical fiber sensor with controlled response
    13.
    发明申请
    Distributed optical fiber sensor with controlled response 有权
    具有受控响应的分布式光纤传感器

    公开(公告)号：US20050053344A1

    公开(公告)日：2005-03-10

    申请号：US10717080

    申请日：2003-11-19

    Applicant: Robert Lieberman ,  Claudio Egalon

    Inventor： Robert Lieberman ,  Claudio Egalon

    IPC: G01N21/77 ,  G02B6/02 ,  G02B6/16

    CPC classification number: G02B6/02 ,  G01D5/35345 ,  G01N21/7703 ,  G01N2021/7716 ,  G01N2021/7773 ,  G01N2021/7783 ,  G01N2021/7786 ,  G01N2201/0886 ,  Y10S385/901 ,  Y10S436/805

    Abstract: Distributed fiber optic chemical and physical sensors provide a relatively highly uniform response over the length of the fiber by, for example, varying such properties as the core/cladding index of refraction ratio to compensate for the non-linearity in sensitivity due to the loss of higher order modes in multi-mode fibers. The variation of the ratio changes the absorption coefficient of the fiber and can be used to compensate for any non-linearity in response. Other techniques for compensation also are disclosed.

    Abstract translation: 分布式光纤化学和物理传感器通过例如改变诸如芯/包层折射率折射率之类的特性来补偿纤维的长度上的相对高度均匀的响应，以补偿灵敏度的非线性，这是由于损失 多模光纤中的高阶模式。 该比率的变化改变了光纤的吸收系数，可用于补偿任何响应的非线性。 还公开了其他补偿技术。

    AN OPTICAL FIBRE FOR USE IN A SYSTEM FOR DETECTION OF ONE OR MORE COMPOUNDS IN A FLUID
    14.
    发明申请
    AN OPTICAL FIBRE FOR USE IN A SYSTEM FOR DETECTION OF ONE OR MORE COMPOUNDS IN A FLUID 审中-公开
    用于检测流体中一种或多种化合物的系统中的光学纤维

    公开(公告)号：WO2016184825A1

    公开(公告)日：2016-11-24

    申请号：PCT/EP2016/060938

    申请日：2016-05-16

    Applicant: INL- INTERNATIONAL IBERIAN NANOTECHNOLOGY LABORATORY

    Inventor： VIEGAS, Diana ,  QUEIRÓS, Raquel ,  NIEDER, Jana ,  FÉRNANDEZ, Maria Teresa ,  ESPIÑA, Begoña ,  FREITAS, Paolo ,  MONTELIUS, Lars

    IPC: G01N21/552 ,  G01N21/65 ,  G01N21/77 ,  G01N33/543

    CPC classification number: G01N21/554 ,  G01N21/553 ,  G01N21/658 ,  G01N21/7703 ,  G01N2021/7716 ,  G01N2201/088 ,  G01N2201/0886

    Abstract: The present invention relates to an optical fibre for use in a system for detection of one or more compounds in a fluid. The optical fibre (100, 101, 202) comprising at least two binding portions (102, 104, 118, 210, 211, 212) separated from each other along the longitudinal direction (106) of the optical fibre (100, 101, 202), wherein each of the at least two binding portions (102, 104, 118, 210, 211, 212) comprises a plasmonic structure (120) and/or a SERS structure (121), and a binding material (126) for binding of one or more compounds, wherein at least two binding portions (102, 104, 118, 210, 211, 212) are arranged for binding the same compound or compounds, wherein the optical fibre (100, 101, 202) is arranged for receiving light and transmitting light to each of the at least two binding portions, wherein each of the at least two binding portions (102, 104, 118, 210, 211, 212 ) is arranged such that light transmitted through that binding portion (102, 104, 118, 210, 211, 212) without bound compound is different compared to light transmitted through that binding portion (102, 104, 118, 210, 211, 212) with bound compound, or light reflected back from that binding portion (102, 104, 118, 210, 211, 212) without bound compound is different compared to light reflected back from that binding portion (102, 104, 118, 210, 211, 212) with bound compound. The present invention further relates to a system (200) for detection of one or more compounds in a fluid (103) and an optical fibre (100, 101, 202) for use in such a system (200) and a method (400) using the system (200).

    Abstract translation: 本发明涉及用于检测流体中一种或多种化合物的系统中的光纤。 所述光纤（100,101,202）包括沿光纤（100,101,202）的纵向（106）彼此分开的至少两个绑定部分（102,104,118,210,211,212） ），其中所述至少两个结合部分（102,104,118,210,211,212）中的每一个包括等离子体激元结构（120）和/或SERS结构（121）和用于结合的结合材料（126） 一种或多种化合物，其中至少两个结合部分（102,104,118,210,211,212）被布置用于结合相同的化合物或化合物，其中所述光纤（100,101,202）被布置用于接收 光和透光至所述至少两个绑定部分中的每一个，其中所述至少两个绑定部分（102,104,118,210,211,212）中的每一个被布置成使得透过所述绑定部分（102,104 ，118,210,211,212）与通过该结合部分（102,104,118,210,211,21）的光不同， 或者从结合部分（102,104,118,210,211,212）反射回不具有结合化合物的光与从该结合部分（102,104,118,210,212,212）反射回的光不同， 211,212）与结合的化合物。 本发明还涉及用于检测在这种系统（200）和方法（400）中使用的流体（103）和光纤（100,101,202）中的一种或多种化合物的系统（200） 使用系统（200）。

    DISTRIBUTED OPTICAL FIBER GAS SENSOR
    15.
    发明申请
    DISTRIBUTED OPTICAL FIBER GAS SENSOR 审中-公开
    分布式光纤气体传感器

    公开(公告)号：WO2018064821A1

    公开(公告)日：2018-04-12

    申请号：PCT/CN2016/101521

    申请日：2016-10-09

    Applicant: SOUTH CHINA NORMAL UNIVERSITY

    Inventor： SVANBERG, Sune ,  ZHAO, Guangyu ,  ZHOU, Bin

    IPC: G01N21/31

    CPC classification number: G01N21/39 ,  G01N21/552 ,  G01N2021/394 ,  G01N2201/0886

    Abstract: A distributed optical fiber gas sensing system (100) based on evanescent field sensing, spatially resolved along the fiber (105, 200, 300) and obtained by employing differential absorption lidar techniques is described. The fiber (105, 200, 300) can be arranged in a plurality of ways, and could have a porous cladding (202) sensing fiber (105, 200, 300) as the sensing unit. The sensing fiber (105, 200, 300) has a solid core (201) to guide light and a porous cladding (202) to protect the fiber (105, 200, 300) from physical damage and to enlarge the interface of the evanescent field and the test gas. A pulsed or modulated laser (103), a 3-dB optical coupler (104) and a photomultiplier tube (PMT) (107) form a typical OTDR sensing system. The pulse generator (102) is to control the pulse width, period, duty cycle of the pulsed laser (103). The data acquisition card (106) is to record the amplitude of the reflected light detected by the PMT (107). The controller (101) which usually is a computer is for signal recording and system synchronizing.

    Abstract translation: 描述了基于渐逝场感测的分布式光纤气体传感系统（100），其沿光纤（105,200,300）空间分辨并通过采用差分吸收激光雷达技术获得。 纤维（105,200,300）可以以多种方式布置，并且可以具有感测纤维（105,200,300）作为感测单元的多孔包壳（202）。 传感光纤（105,200,300）具有引导光的实芯（201）和多孔包层（202），以保护光纤（105,200,300）免受物理损伤并扩大消逝场的界面 和测试气体。 脉冲或调制激光器（103），3-dB光耦合器（104）和光电倍增管（PMT）（107）形成典型的OTDR传感系统。 脉冲发生器（102）用于控制脉冲激光器（103）的脉冲宽度，周期，占空比。 数据采集​​卡（106）记录由PMT（107）检测到的反射光的振幅。 通常是计算机的控制器（101）用于信号记录和系统同步。

    METHOD AND APPARATUS FOR DISTURBANCE DETECTION
    17.
    发明申请
    METHOD AND APPARATUS FOR DISTURBANCE DETECTION 有权
    用于干扰检测的方法和装置

    公开(公告)号：US20140185037A1

    公开(公告)日：2014-07-03

    申请号：US14196852

    申请日：2014-03-04

    Applicant: OPTELLIOS, INC.

    Inventor： Zhizhong Zhuang ,  Yuri Zadorozhny ,  Francesco Anthony Annetta ,  Jay S. Patel

    IPC: G01M11/00

    CPC classification number: G01M11/33 ,  G01D5/35361 ,  G01K11/32 ,  G01M5/0025 ,  G01M5/0033 ,  G01M5/0066 ,  G01M5/0091 ,  G01N2201/0886

    Abstract: A sweep sensor may include a signal source, a propagation medium, and a detector. By transmitting an interrogating signal from the signal source into the propagation medium, detectable disturbances along the medium can physically alter the characteristics of the medium, which may cause a measureable change in the backscattered signal at the detector. Based on the change, it may be possible to locate the geographic origins of the physical disturbances along the propagation medium, or to determine the nature of the disturbances, or both. For example, it is generally possible to estimate the approximate distance between the detector and the disturbance given the time required to obtain the backscattered signal and the velocity of the signal source in the propagation medium. Further, in some embodiments, it is possible to quantify the amount of disturbance.

    Abstract translation: 扫描传感器可以包括信号源，传播介​​质和检测器。 通过从信号源发送询问信号到传播介质中，沿着介质的可检测的干扰可以物理地改变介质的特性，这可能导致检测器处的​​反向散射信号的可测量的变化。 基于这种变化，可以沿着传播介质定位物理扰动的地理起源，或者确定干扰的性质，或者两者。 例如，通常可以估计在获得反向散射信号所需的时间和传播介质中的信号源的速度之间的检测器和干扰之间的近似距离。 此外，在一些实施例中，可以量化扰动的量。

    Hydrogen-Sensing Optical Fiber
    18.
    发明申请
    Hydrogen-Sensing Optical Fiber 有权
    氢传感光纤

    公开(公告)号：US20130175437A1

    公开(公告)日：2013-07-11

    申请号：US13657251

    申请日：2012-10-22

    Applicant: Draka Comteq, B.V.

    Inventor： Ekaterina Burov ,  Alain Pastouret ,  Gilles Melin

    IPC: F21V8/00 ,  G01N21/25

    CPC classification number: G02B6/0001 ,  G01N21/255 ,  G01N21/7703 ,  G01N33/005 ,  G01N2021/7709 ,  G01N2021/7783 ,  G01N2201/0886

    Abstract: In harsh and hazardous environments, the presence of elevated levels of hydrogen gas is an indicator of chemical and/or radiological activity. The present hydrogen-sensing optical fiber provides rapid and reliable hydrogen detection and quantification, irrespective of temperature fluctuations. The hydrogen-sensing optical fiber does not exhibit significant irreversible hydrogen-induced attenuation losses after exposure to a hydrogen-rich atmosphere.

    Abstract translation: 在恶劣和危险的环境中，高水平氢气的存在是化学和/或辐射活动的指标。 本发明的氢感测光纤提供了快速可靠的氢检测和定量，而不管温度波动如何。 氢感测光纤在暴露于富氢气氛之后不显示出显着的不可逆的氢诱导衰减损耗。

    Distributed optical fiber sensor with controlled response
    19.
    发明授权
    Distributed optical fiber sensor with controlled response 有权
    具有受控响应的分布式光纤传感器

    公开(公告)号：US07006718B2

    公开(公告)日：2006-02-28

    申请号：US10717080

    申请日：2003-11-19

    Applicant: Robert A. Lieberman ,  Claudio O. Egalon

    Inventor： Robert A. Lieberman ,  Claudio O. Egalon

    IPC: G02B6/00

    CPC classification number: G02B6/02 ,  G01D5/35345 ,  G01N21/7703 ,  G01N2021/7716 ,  G01N2021/7773 ,  G01N2021/7783 ,  G01N2021/7786 ,  G01N2201/0886 ,  Y10S385/901 ,  Y10S436/805

    Abstract: Distributed fiber optic chemical and physical sensors provide a relatively highly uniform response over the length of the fiber by, for example, varying such properties as the core/cladding index of refraction ratio to compensate for the non-linearity in sensitivity due to the loss of higher order modes in multi-mode fibers. The variation of the ratio changes the absorption coefficient of the fiber and can be used to compensate for any non-linearity in response. Other techniques for compensation also are disclosed.

    Abstract translation: 分布式光纤化学和物理传感器通过例如改变诸如芯/包层折射率折射率之类的特性来补偿纤维的长度上的相对高度均匀的响应，以补偿灵敏度的非线性，这是由于损失 多模光纤中的高阶模式。 该比率的变化改变了光纤的吸收系数，可用于补偿任何响应的非线性。 还公开了其他补偿技术。

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