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    METHOD AND APPARATUS FOR DISTURBANCE DETECTION
    25.
    发明申请
    METHOD AND APPARATUS FOR DISTURBANCE DETECTION 失效
    用于干扰检测的方法和装置

    公开(公告)号：US20120176606A1

    公开(公告)日：2012-07-12

    申请号：US13016814

    申请日：2011-01-28

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

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

    IPC: G01N21/88

    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。

    Remote water sensing system with optical fiber
    28.
    发明专利
    Remote water sensing system with optical fiber 审中-公开
    具有光纤的远程水感测系统

    公开(公告)号：JP2013140132A

    公开(公告)日：2013-07-18

    申请号：JP2012114669

    申请日：2012-05-18

    Applicant: Chunghwa Telecom Co Ltd ,  中華電信股▲分▼有限公司

    Inventor： WANG JR-YI ,  WANG TZU-WEN ,  WU JIA-SHIAN ,  TSAI FU-YUAN

    IPC: G01M11/00 ,  G01N21/17

    CPC classification number: G02B6/00 ,  G01M3/047 ,  G01N21/552 ,  G01N2021/1793 ,  G01N2201/0886

    Abstract: PROBLEM TO BE SOLVED: To provide a remote water sensing system and method with optical fiber, for forming a neural network with sensing ability.SOLUTION: A remote water sensing system and method with optical fiber, comprises (1) a water sensor which is an optical element in accordance with the principle of detection of optical path return loss and provided with reusable features to sense the state of having water or not, and (2) a signal processing control unit which emits monitoring light source signals with an Optical Time Domain Reflectometer (OTDR), an Optical Frequency Modulated/Continuous Wave (OFMCW), or a light source and an optical power meter, and accepts optical signals fed back from the water sensor, to determine whether the monitoring position is touching the water or not. The method can be applied in other fields, such as optical cable connection box watering monitoring, telecommunications facilities flooding alarm, and monitoring and alarm for a low-lying area or river water level of a bridge.

    Abstract translation: 要解决的问题：提供一种具有光纤的远程水感测系统和方法，用于形成具有感测能力的神经网络。解决方案：一种具有光纤的远程水传感系统和方法，包括（1）水传感器， 光学元件根据光路返回损耗的检测原理提供可重复使用的特征，以检测是否具有水的状态;以及（2）信号处理控制单元，其用光时域反射计发射监测光源信号 （OTDR），光调制/连续波（OFMCW）或光源和光功率计，并接收从水传感器反馈的光信号，以确定监视位置是否接触到水。 该方法可应用于其他领域，如光缆接线盒浇水监测，电信设备淹水报警，以及桥梁低洼地区或河流水位的监测和报警。

    PERMEABLE OPTICAL FIBER FOR GAS SENSING
    29.
    发明申请
    PERMEABLE OPTICAL FIBER FOR GAS SENSING 审中-公开
    透气性光纤用于气体传感

    公开(公告)号：WO2018064822A1

    公开(公告)日：2018-04-12

    申请号：PCT/CN2016/101522

    申请日：2016-10-09

    Applicant: SOUTH CHINA NORMAL UNIVERSITY

    Inventor： ZHOU, Bin ,  SVANBERG, Sune ,  HE, Sailing

    IPC: G01N21/31

    CPC classification number: G01N21/39 ,  G01M3/047 ,  G01N2021/394 ,  G01N2201/0886

    Abstract: A permeable optical fiber (100, 202, 304, 403, 701) for distributed gas sensing is described. The fiber (100, 202, 304, 403, 701) has got core (101, 502, 602) and cladding (102, 501, 601) structure. It can be arranged in a plurality of ways, but could have a permeable polymer cladding (102, 501, 601) to let the gas go inside the fiber (100, 202, 304, 403, 701) and a silica core (101, 502, 602) to guide light. The polymer cladding (102, 501, 601) is also designed to protect the fiber (100, 202, 304, 403, 701) from physical damage. In the optical fibers (100, 202, 304, 403, 701) some small part of light is distributed in the region of cladding (102, 501, 601), and the permeable cladding (102, 501, 601) makes the interaction between surrounding gas the guided light possible, and then the sensing of the gas surrounding the fiber (100, 202, 304, 403, 701) is realized by the laser absorption spectroscopy. The proposed sensing fiber (100, 202, 304, 403, 701) is preferentially used for long distance gas sensing system using a variety of arrangements, including the use of sections of the gas permeable fiber (100, 202, 304, 403, 701) as sensors located at various sites, and optically accessed through normal fiber transmission or by using the differential absorption lidar technique, there spatial concentrations along the same long fiber are measured by time-of-flight or phase shift techniques. Numerous gases can be monitored in connection with industrial, agricultural, mining operations, etc.

    Abstract translation: 描述了用于分布式气体感测的可渗透光纤（100,202,304,403,701）。 光纤（100,202,304,403,701）具有芯部（101,502,602）和包层（102,501,601）结构。 它可以以多种方式布置，但可以具有可渗透的聚合物包层（102,501,601）以使气体进入纤维（100,202,304,403,701）内部并且二氧化硅核心（101,102） 502，602）来引导光。 聚合物包层（102,501,601）也被设计成保护光纤（100,202,304,403,701）免受物理损坏。 在光纤（100,202,304,403,701）中，光的一小部分分布在包层（102,501,601）的区域中，并且可渗透包层（102,501,601）使得 围绕气体引导可能的光，然后通过激光吸收光谱实现对光纤（100,202,304,403,701）周围的气体的感测。 所提出的传感光纤（100,202,304,403,701）优选地用于使用各种布置的长距离气体传感系统，包括使用透气纤维（100,202,304,403,701）的部分 ）作为位于不同地点的传感器，并且通过正常光纤传输或通过使用差分吸收激光雷达技术来光学访问，沿相同长光纤的空间浓度通过飞行时间或相移技术来测量。 在工业，农业，采矿作业等方面，可监测多种气体。

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