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    Method and apparatus for disturbance detection
    1.
    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
    2.
    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
    3.
    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。

    METHOD AND APPARATUS FOR DISTURBANCE DETECTION
    5.
    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
    6.
    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
    7.
    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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