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1. 发明授权

US09739645B2 Fibre optic distributed sensing 有权
公开(公告)号：US09739645B2
公开(公告)日：2017-08-22
申请号：US13509415
申请日：2010-11-11
申请人： David John Hill , Magnus McEwen-King
发明人： David John Hill , Magnus McEwen-King
IPC分类号： G02B6/00 , G02B6/10 , G01J1/04 , G01D5/353
CPC分类号： G01D5/35361 , G01D5/35348
摘要： A method of distributed fiber optic sensing is described in which an optical fiber (104) is interrogated with electromagnetic radiation; back-scattered radiation is detected; and the returns are processed to provide a measurement signal (310) for each of a plurality of longitudinal sensing portions of the optical fiber. The method comprises analyzing the measurement signals of a first subset of longitudinal sensing portions to provide a first zone (306a) having a first sensing function and analyzing the measurement signals of at least a second subset of longitudinal sensing portions to provide at least a second zone (306b) having a second, different, sensing function. The different sensing functions may include detecting different events of interest. In some embodiments the geometry of the fiber may provide different sensing zones (406a, 406b).

2. 发明申请

US20140159715A1 Portal Monitoring 有权
标题翻译：门户监控
公开(公告)号：US20140159715A1
公开(公告)日：2014-06-12
申请号：US14232793
申请日：2012-07-12
申请人： Magnus McEwen-King
发明人： Magnus McEwen-King
IPC分类号： G01V3/08
CPC分类号： G01V3/08 , G01R33/032 , G01R33/0327
摘要： The present invention relates to a portal monitoring system that uses distributed sensing to detect metallic objects passing through the portal. The system comprises a length of fibre optic (102) comprising an optical fibre (106) mechanically coupled to a material (108) whose physical characteristics vary dependent on the applied magnetic field. The fibre optic (102) is arranged in the vicinity of a portal (200) and a fibre optic interrogator (104) is adapted to provide distributed sensing on the optical fibre to provide measurement data from a plurality of contiguous portions of said optical fibre at each of a plurality of times. A data analyser processes the measurement data to detect signals characteristic of a disturbance in the magnetic field along the optical fibre. The system of the present invention is able to monitor multiple people passing though a portal at the same time and provide an indication of the location of metallic objects within the portal.
摘要翻译：本发明涉及使用分布式感测来检测通过门户的金属物体的门禁监视系统。该系统包括长度的光纤（102），其包括机械耦合到物理特性根据所施加的磁场而变化的材料（108）的光纤（106）。光纤（102）布置在入口（200）附近，并且光纤询问器（104）适于在光纤上提供分布式感测以从所述光纤的多个邻接部分提供测量数据每次多次。数据分析仪处理测量数据以检测沿着光纤的磁场中的干扰特征的信号。本发明的系统能够同时监视通过门户通过的多个人，并提供门户内的金属物体的位置的指示。

3. 发明申请

US20110139538A1 Tracking Objects in Conduits 有权
标题翻译：跟踪管道中的物体
公开(公告)号：US20110139538A1
公开(公告)日：2011-06-16
申请号：US13059806
申请日：2009-08-20
申请人： David John Hill , Magnus McEwen-King
发明人： David John Hill , Magnus McEwen-King
IPC分类号： G01S15/00
CPC分类号： G01M3/243 , F17D5/06 , G01D5/48 , G01H9/004 , G01M3/047 , G01P3/14
摘要： Methods and apparatus for tracking objects in conduits, especially for tracking the movement of a pig in a pipeline, are disclosed. Distributed acoustic sensing is used to obtain signal returns from a plurality of discrete longitudinal sensing portions of a fibre optic cable which is laid along the length of the conduit. The method involves detecting an acoustic signature corresponding to the object moving in the conduit. The acoustic signature may comprise a series of pressure pulses caused by the object traversing joints etc. in the conduit. Preferably the method involves detecting pressure waves caused by the object as it moves through the conduit. Detecting the characteristic pressure wave signal provides discrimination of the object from other acoustic disturbances. In pipeline applications a pig can be tracked in real time, if the pig stops moving an alert can be generated and the location of the pig will be known.
摘要翻译：公开了用于跟踪管道中的物体的方法和装置，特别是用于跟踪管道中的猪的运动。分布式声学感测用于从沿着导管长度放置的光纤电缆的多个离散的纵向感测部分获得信号返回。该方法涉及检测对应于在导管中移动的对象的声学签名。声学特征可以包括由导管中的物体横穿接头等引起的一系列压力脉冲。优选地，该方法包括检测由物体在通过导管移动时引起的压力波。检测特征压力波信号提供对象与其他声学干扰的区别。在管道应用中，可以实时跟踪猪，如果猪停止移动，则可以产生警报，并且知道猪的位置。

4. 发明申请

US20110069302A1 Wide Area Seismic Detection 有权
标题翻译：广域地震检测
公开(公告)号：US20110069302A1
公开(公告)日：2011-03-24
申请号：US12883755
申请日：2010-09-16
申请人： David John Hill , Magnus McEwen-King
发明人： David John Hill , Magnus McEwen-King
IPC分类号： G01V1/18 , G01N21/00
CPC分类号： G01V1/008 , G01D5/35361 , G01H9/004 , G01V1/001 , G01V1/003 , G01V1/186
摘要： A method for monitoring for seismic events by interrogating an optic fibre which forms part of an existing communications infrastructure to provide distributed acoustic sensing (DAS). The signals provided by the distributed sensing provide measurements at each of a plurality of discrete portions along the fibre, which may be many tens of kilometres in length. Warning or measurement and consequently prediction of seismic activity can be provided by collecting data over a wide area, without the need to deploy a correspondingly large fibre network.
摘要翻译：通过询问形成现有通信基础设施的一部分以提供分布式声学感测（DAS）的光纤来监测地震事件的方法。由分布式感测提供的信号在沿着光纤的多个离散部分中的每一个处提供测量，其长度可以是数十公里。可以通过在广泛的区域收集数据来提供地震活动的警告或测量，从而预测地震活动，而无需部署相应的大型光纤网络。

5. 发明授权

US10900860B2 Conduit monitoring 有权
公开(公告)号：US10900860B2
公开(公告)日：2021-01-26
申请号：US13059795
申请日：2009-08-20
申请人： David John Hill , Magnus McEwen-King
发明人： David John Hill , Magnus McEwen-King
IPC分类号： G01M3/00 , G01M3/24 , F17D5/06 , G01D5/48 , G01H9/00 , G01P3/14 , G01M3/04
摘要： A method for monitoring a fluid carrying conduit by introducing an acoustic pulse into the conduit, and interrogating an optic fibre positioned along the path of said conduit to provide distributed acoustic sensing. By measuring the response at each of a plurality of locations, a conduit condition profile can be derived. A condition profile can be obtained quickly and easily with minimum disruption to the pipeline infrastructure and contained flow. Existing optic fibres running along the path of a pipe can be employed for sensing purposes, allowing relatively long spans of pipeline to be monitored with only limited access to the pipe.

6. 发明授权

US09435902B2 Wide area seismic detection 有权
标题翻译：广域地震检测
公开(公告)号：US09435902B2
公开(公告)日：2016-09-06
申请号：US12883755
申请日：2010-09-16
申请人： David John Hill , Magnus McEwen-King
发明人： David John Hill , Magnus McEwen-King
IPC分类号： G01V1/00 , G01V1/18 , G01D5/353 , G01H9/00
CPC分类号： G01V1/008 , G01D5/35361 , G01H9/004 , G01V1/001 , G01V1/003 , G01V1/186
摘要： A method for monitoring for seismic events by interrogating an optic fiber which forms part of an existing communications infrastructure to provide distributed acoustic sensing (DAS). The signals provided by the distributed sensing provide measurements at each of a plurality of discrete portions along the fiber, which may be many tens of kilometers in length. Warning or measurement and consequently prediction of seismic activity can be provided by collecting data over a wide area, without the need to deploy a correspondingly large fiber network.
摘要翻译：通过询问形成现有通信基础设施的一部分以提供分布式声学感测（DAS）的光纤来监测地震事件的方法。由分布式感测提供的信号在沿着光纤的多个离散部分中的每一个处提供测量，其长度可以是数十公里。可以通过在广泛的区域收集数据来提供地震活动的警告或测量，从而预测地震活动，而无需部署相应的大型光纤网络。

7. 发明授权

US08923663B2 Distributed fibre optic sensing 有权
标题翻译：分布式光纤传感
公开(公告)号：US08923663B2
公开(公告)日：2014-12-30
申请号：US13509402
申请日：2010-11-12
申请人： David John Hill , Magnus McEwen-King
发明人： David John Hill , Magnus McEwen-King
IPC分类号： G02B6/00 , G01D5/353
CPC分类号： G01D5/353 , G01D5/35361 , G02B6/00
摘要： The invention relates to a distributed fiber optic sensor (104, 106) having a first spatial resolution (301, 303) and a second, different, spatial resolution (302, 304). The sensor, which may be a distributed acoustic sensor, has an optical source (112) configured to interrogate an optical fiber (104) with optical radiation and a detector (116) configured to detected optical radiation back-scattered from within the fiber. A processor (108) is configured to process the detected back-scatter radiation to provide a plurality of longitudinal sensing portions of fiber. The optical source and processor are adapted to provide the first and second spatial resolutions, for instance by changing the duration and/or separation of the optical pulses and analysis bins. The first and second spatial resolutions may be provided sequentially or simultaneously and the spatial resolution used may be varied as part of a default pattern or in response to a detection event.
摘要翻译：本发明涉及具有第一空间分辨率（301,303）和第二不同的空间分辨率（302,304）的分布式光纤传感器（104,106）。可以是分布式声学传感器的传感器具有被配置为用光辐射来询问光纤（104）的光源（112）和被配置为检测从光纤内部反向散射的光辐射的检测器（116）。处理器（108）被配置为处理检测到的反向散射辐射以提供光纤的多个纵向感测部分。光源和处理器适于提供第一和第二空间分辨率，例如通过改变光脉冲和分析箱的持续时间和/或分离。可以顺序地或同时地提供第一和第二空间分辨率，并且使用的空间分辨率可以作为默认模式的一部分或响应于检测事件而变化。

8. 发明申请

US20130151203A1 Detection of Moving Objects 审中-公开
标题翻译：检测移动物体
公开(公告)号：US20130151203A1
公开(公告)日：2013-06-13
申请号：US13816896
申请日：2011-08-15
申请人： Magnus McEwen-King , David John Hill , Alastair Godfrey
发明人： Magnus McEwen-King , David John Hill , Alastair Godfrey
IPC分类号： G01H9/00 , G06F17/00
CPC分类号： G01H9/004 , G06F17/00
摘要： A system for moving object (402) detection is provided, the system comprising a fibre optic interrogator (106) adapted to provide distributed acoustic sensing on a optic fibre (104), for example arranged along a border. The measurement signals from each of a plurality of sensing portions (404, 406, 408, 410, 412) of said fibre are analysed to determined a characteristic of a Doppler shift. The characteristic of a Doppler shift may be a generally continuous decrease in detected frequency. By detecting the time at which the rate of change of frequency is at a maximum for each of the sensing portions the time of closest approach (ti, t2, t3, t4, t5) of the object to those sensing portions can be determined with the sensing portion the object approaches closest to showing the greatest value of maximum rate of change of frequency. The distance of closest approach and velocity can be determined.
摘要翻译：提供了一种用于移动物体（402）检测的系统，该系统包括适于在光纤（104）上提供分布式声学感测的光纤询问器（106），例如沿边界布置。分析来自所述光纤的多个感测部分（404,406,408,410,412）中的每一个的测量信号，以确定多普勒频移的特性。多普勒频移的特征可以是检测频率的一般连续的降低。通过检测每个感测部分的频率变化率为最大值的时间，物体对那些感测部分的最接近（ti，t2，t3，t4，t5）的时间可以用物体接近最接近显示频率变化最大值的最大值的感测部分。可以确定最接近和速度的距离。

9. 发明申请

US20130139600A1 Gunfire Detection 审中-公开
标题翻译：枪火探测
公开(公告)号：US20130139600A1
公开(公告)日：2013-06-06
申请号：US13816902
申请日：2011-08-15
申请人： Magnus McEwen-King , David John Hill , Alastair Godfrey
发明人： Magnus McEwen-King , David John Hill , Alastair Godfrey
IPC分类号： G01H9/00
CPC分类号： G01H9/004
摘要： An apparatus and method for detecting gunfire is provided which uses distributed acoustic sensing to provide the gunfire detection. The method comprises interrogating an optical fibre with electromagnetic radiation to provide a distributed acoustic sensor comprising a plurality of sensing portions of the optical fibre, and analysing a measurement signal from said sensing portions to detect gunfire events. A gunfire event will typically be relatively intense but of short duration and affect multiple sensing channels. The method may detect a characteristic 602 of a muzzle blast and/or a characteristic 601 of pressure wave from a supersonic round and may determine the location of the gunfire and the location at which the round crosses the sensor.
摘要翻译：提供了一种用于检测炮火的装置和方法，其使用分布式声学感测来提供枪声检测。该方法包括用电磁辐射询问光纤以提供包括光纤的多个感测部分的分布式声学传感器，以及分析来自所述感测部分的测量信号以检测炮火事件。炮火事件通常会相对较强，但持续时间短，影响到多个传感通道。该方法可以检测枪口爆炸的特征602和/或来自超音速回合的压力波特征601，并且可以确定炮火的位置和圆形穿过传感器的位置。

10. 发明申请

US20120057432A1 Well Monitoring by Means of Distributed Sensing Means 有权
标题翻译：通过分布式感知手段进行井监测
公开(公告)号：US20120057432A1
公开(公告)日：2012-03-08
申请号：US13320884
申请日：2010-05-27
申请人： David John Hill , Magnus McEwen-King , Patrick Tindel
发明人： David John Hill , Magnus McEwen-King , Patrick Tindel
IPC分类号： E21B47/14 , G01S15/00 , G01V8/16
CPC分类号： E21B47/16 , E21B43/11857 , E21B43/26 , E21B47/101 , E21B47/123 , G01H9/004 , G01V1/50 , G01V2210/1429 , G01V2210/646
摘要： This application describes methods and apparatus for downhole monitoring in real-time. The method involves interrogating an unmodified optic fibre (102) arranged along the path of a well bore (106) to provide a distributed acoustic sensor and sampling data gathered from a plurality of sensing portions of the fibre. The sampled data is then processed to provide a real-time indication of the acoustic signals detected by the sensing portions of the fibre. The real-time indication provides information to an operator or controller of the downwell process with real-time feedback data regarding what is happening during the down-well process which allows the identification of any problems and adjustment of the process parameters.
摘要翻译：本应用程序实时描述了井下监控的方法和设备。该方法包括询问沿着井眼（106）的路径布置的未修改的光纤（102），以提供分布式声学传感器以及从光纤的多个感测部分收集的采样数据。然后对采样数据进行处理以提供由光纤的感测部分检测到的声信号的实时指示。实时指示通过实时反馈数据向井下过程的操作员或控制器提供信息，这些实时反馈数据涉及井下过程中正在发生的事件，这些数据允许识别任何问题并调整过程参数。

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