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公开(公告)号：US20100117830A1
公开(公告)日：2010-05-13
申请号：US12518971
申请日：2007-12-06
申请人： Andrew Strong , Arthur H. Hartog
发明人： Andrew Strong , Arthur H. Hartog
IPC分类号： G08B13/18
CPC分类号： G08B13/186 , G01H9/004
摘要： An intrusion detection system for monitoring a premises includes at least one optical cable that houses at least one optical fiber and extends about the premises. Optical time domain reflectometry (OTDR) means is operably coupled to opposite first and second ends of the at least one optical fiber. The OTDR means includes first signal processing circuitry that analyzes the backscatter signal received via the first end of the at least one optical fiber in order to detect an intrusion of the premises, and second signal processing circuitry that analyzes the backscatter signal received via the second end of the at least one optical fiber in order to detect an intrusion of the premises. The redundancy of intrusions decisions made by the first and second signal processing circuitry can be verified. The system preferably further includes means for detecting a break in the at least one fiber, for identifying location of the break, for outputting to a user the location of the break, and for raising an alarm indicating the break.
摘要翻译： 用于监视房屋的入侵检测系统包括至少一个光缆，其容纳至少一个光纤并且在房屋周围延伸。 光时域反射计（OTDR）装置可操作地耦合到至少一根光纤的相对的第一和第二端。 OTDR装置包括第一信号处理电路，其分析经由至少一个光纤的第一端接收的反向散射信号，以便检测房屋的入侵;以及第二信号处理电路，其分析经由第二端接收的反向散射信号 的至少一个光纤以便检测房屋的入侵。 可以验证由第一和第二信号处理电路进行的入侵决定的冗余。 该系统优选地还包括用于检测至少一根光纤中的断裂的装置，用于识别断裂的位置，用于向用户输出断裂的位置，以及用于提高指示断裂的报警。
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公开(公告)号：US07668411B2
公开(公告)日：2010-02-23
申请号：US12134339
申请日：2008-06-06
申请人： Dylan Davies , Arthur H. Hartog , Kamal Kader
发明人： Dylan Davies , Arthur H. Hartog , Kamal Kader
IPC分类号： G02B6/00
CPC分类号： G01H9/004 , G01M11/3109
摘要： An optical time domain reflectometry (OTDR) system is configured to detect Rayleigh backscatter reflected from a multimode sensing optical fiber. The system includes a single spatial mode filtering system to select a single speckle of the Rayleigh backscatter produced in response to an optical pulse launched into the multimode fiber. The detected single speckle may be used for distributed disturbance (vibration) detection.
摘要翻译： 光时域反射测量（OTDR）系统被配置为检测从多模感测光纤反射的瑞利反向散射。 该系统包括单个空间模式滤波系统，用于响应于发射到多模光纤中的光脉冲而选择产生的瑞利反向散射的单个斑点。 检测到的单个斑点可用于分布式扰动（振动）检测。
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公开(公告)号：US20100025032A1
公开(公告)日：2010-02-04
申请号：US12430486
申请日：2009-04-27
IPC分类号： E21B43/00
CPC分类号： F42C11/00 , E21B23/00 , E21B47/123 , F42B3/113 , G01V11/002
摘要： The present invention comprises a system and methods to actuate downhole tools by transmitting an optical signal through an optical fiber to the downhole tool. The optical signal can comprise a specific optical signal frequency, signal, wavelength or intensity. The downhole tool can comprise packers, perforating guns, flow control valves, such as sleeve valves and ball valves, samplers, sensors, pumps, screens (such as to expand), chemical cutters, plugs, detonators, or nipples.
摘要翻译： 本发明包括通过将光信号通过光纤传输到井下工具来致动井下工具的系统和方法。 光信号可以包括特定的光信号频率，信号，波长或强度。 井下工具可以包括封隔器，射孔枪，流量控制阀，例如套管阀和球阀，取样器，传感器，泵，屏幕（如扩展），化学切割器，塞子，雷管或乳头。
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公开(公告)号：US20090304322A1
公开(公告)日：2009-12-10
申请号：US12134339
申请日：2008-06-06
申请人： Dylan Davies , Arthur H. Hartog , Kamal Kader
发明人： Dylan Davies , Arthur H. Hartog , Kamal Kader
IPC分类号： G02B6/00
CPC分类号： G01H9/004 , G01M11/3109
摘要： An optical time domain reflectometry (OTDR) system is configured to detect Rayleigh backscatter reflected from a multimode sensing optical fiber. The system includes a single spatial mode filtering system to select a single speckle of the Rayleigh backscatter produced in response to an optical pulse launched into the multimode fiber. The detected single speckle may be used for distributed disturbance (vibration) detection.
摘要翻译： 光时域反射测量（OTDR）系统被配置为检测从多模感测光纤反射的瑞利反向散射。 该系统包括单个空间模式滤波系统，用于响应于发射到多模光纤中的光脉冲而选择产生的瑞利反向散射的单个斑点。 检测到的单个斑点可用于分布式扰动（振动）检测。
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公开(公告)号：US07504618B2
公开(公告)日：2009-03-17
申请号：US11772997
申请日：2007-07-03
申请人： Arthur H. Hartog , Gareth P. Lees
发明人： Arthur H. Hartog , Gareth P. Lees
CPC分类号： G01J3/4412 , G01D5/35364 , G01K11/32
摘要： To perform distributed sensing with an optical fiber using Brillouin scattering, a light pulse is transmitted into the optical fiber, where the transmitted light pulse has a first frequency. Backscattered light and optical local oscillator light are combined, where the backscattered light is received from the optical fiber in response to the transmitted light pulse, and where the optical local oscillator light has a second frequency. A frequency offset is caused to be present between the first frequency of the transmitted light pulse and the second frequency of the optical local oscillator light, where the frequency offset is at least 1 GHz less than a Brillouin frequency shift of the backscattered light. Spectra representing Stokes and anti-Stokes components of the backscattered light are acquired, where the Stokes and anti-Stokes components are separated by a frequency span that is based on the frequency offset.
摘要翻译： 为了使用布里渊散射使用光纤执行分布式感测，将光脉冲传输到光纤中，其中透射光脉冲具有第一频率。 组合后向散射光和光学本地振荡器光，其中响应于透射的光脉冲从光纤接收反向散射光，并且其中光学本地振荡器光具有第二频率。 使得频率偏移存在于透射光脉冲的第一频率和光学本地振荡器光的第二频率之间，其中频偏比背散射光的布里渊频移小至少1GHz。 获取表示反向散射光的斯托克斯和反斯托克斯分量的光谱，其中斯托克斯和反斯托克斯分量由基于频率偏移的频率间隔分开。
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公开(公告)号：US20090008536A1
公开(公告)日：2009-01-08
申请号：US11772997
申请日：2007-07-03
申请人： Arthur H. Hartog , Gareth P. Lees
发明人： Arthur H. Hartog , Gareth P. Lees
CPC分类号： G01J3/4412 , G01D5/35364 , G01K11/32
摘要： To perform distributed sensing with an optical fiber using Brillouin scattering, a light pulse is transmitted into the optical fiber, where the transmitted light pulse has a first frequency. Backscattered light and optical local oscillator light are combined, where the backscattered light is received from the optical fiber in response to the transmitted light pulse, and where the optical local oscillator light has a second frequency. A frequency offset is caused to be present between the first frequency of the transmitted light pulse and the second frequency of the optical local oscillator light, where the frequency offset is at least 1 GHz less than a Brillouin frequency shift of the backscattered light. Spectra representing Stokes and anti-Stokes components of the backscattered light are acquired, where the Stokes and anti-Stokes components are separated by a frequency span that is based on the frequency offset.
摘要翻译： 为了使用布里渊散射使用光纤执行分布式感测，将光脉冲传输到光纤中，其中透射光脉冲具有第一频率。 组合后向散射光和光学本地振荡器光，其中响应于透射的光脉冲从光纤接收反向散射光，并且其中光学本地振荡器光具有第二频率。 使得频率偏移存在于透射光脉冲的第一频率和光学本地振荡器光的第二频率之间，其中频偏比背散射光的布里渊频移小至少1GHz。 获取表示反向散射光的斯托克斯和反斯托克斯分量的光谱，其中斯托克斯和反斯托克斯分量由基于频率偏移的频率间隔分开。
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27.发明授权公开(公告)号：US09429450B2
公开(公告)日：2016-08-30
申请号：US12377548
申请日：2007-08-07
申请人： Arthur H. Hartog
发明人： Arthur H. Hartog
CPC分类号： G01D5/35364 , G01K2011/322 , G01M11/3109 , G01M11/3145
摘要： A method for measuring Brillouin backscattering from an optical fiber, comprising mixing backscattered light received from the optical fiber and having a Brillouin frequency fβ(t) with coherent light at a frequency f i in an optical detector to produce an electrical signal with a difference frequency ΔF(t)=fβ(t)−f15 and directly digitizing the electrical signal using an analog-to-digital converter to generate a sequence of samples representing the electrical signal, the samples then being processed to determine one or more properties of the Brillouin spectral line. The difference frequency may be further reduced by an additional frequency mixing stage to allow digitization at a lower sampling rate.
摘要翻译： 一种用于从光纤测量布里渊后向散射的方法，包括将从光纤接收的背散射光混合并且具有布里渊频率fβ（t）与光学检测器中的频率f 1处的相干光以产生具有差频ΔF的电信号 （t）=fβ（t）-f15，并且使用模拟 - 数字转换器直接数字化电信号，以产生表示电信号的样本序列，然后处理样本以确定布里渊光谱的一个或多个特性 线。 可以通过附加的频率混合级来进一步减小差分频率，以允许以更低采样率进行数字化。
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公开(公告)号：US08947232B2
公开(公告)日：2015-02-03
申请号：US12518971
申请日：2007-12-06
申请人： Andrew Strong , Arthur H. Hartog
发明人： Andrew Strong , Arthur H. Hartog
IPC分类号： G08B13/18 , G08B13/00 , G08B25/00 , G02B6/00 , G02B6/44 , H01J3/14 , G01N21/25 , G08B13/186 , G01H9/00
CPC分类号： G08B13/186 , G01H9/004
摘要： An intrusion detection system for monitoring a premises includes at least one optical cable that houses at least one optical fiber and extends about the premises. Optical time domain reflectometry (OTDR) means is operably coupled to opposite first and second ends of the at least one optical fiber. The OTDR means includes first signal processing circuitry that analyzes the backscatter signal received via the first end of the at least one optical fiber in order to detect an intrusion of the premises, and second signal processing circuitry that analyzes the backscatter signal received via the second end of the at least one optical fiber in order to detect an intrusion of the premises. The redundancy of intrusions decisions made by the first and second signal processing circuitry can be verified. The system preferably further includes means for detecting a break in the at least one fiber, for identifying location of the break, for outputting to a user the location of the break, and for raising an alarm indicating the break.
摘要翻译： 用于监视房屋的入侵检测系统包括至少一个光缆，其容纳至少一个光纤并且在房屋周围延伸。 光时域反射计（OTDR）装置可操作地耦合到至少一根光纤的相对的第一和第二端。 OTDR装置包括第一信号处理电路，其分析经由至少一个光纤的第一端接收的反向散射信号，以便检测房屋的入侵;以及第二信号处理电路，其分析经由第二端接收的反向散射信号 的至少一个光纤以便检测房屋的入侵。 可以验证由第一和第二信号处理电路进行的入侵决定的冗余。 该系统优选地还包括用于检测至少一根光纤中的断裂的装置，用于识别断裂的位置，用于向用户输出断裂的位置，以及用于提高指示断裂的报警。
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29.发明授权Seismic acquisition system including a distributed sensor having an optical fiber 有权地震采集系统包括具有光纤的分布式传感器公开(公告)号：US08924158B2
公开(公告)日：2014-12-30
申请号：US12853057
申请日：2010-08-09
CPC分类号： G01V1/003 , E21B47/02208 , E21B49/087 , G01D5/35358 , G01H9/004 , G01V1/00 , G01V1/36 , G01V1/3808 , G01V8/00
摘要： A seismic acquisition system includes a distributed optical sensor (having an optical fiber) and an interrogation subsystem configured to generate a light signal to emit into the optical fiber. The interrogation subsystem receives, from the distributed optical sensor, backscattered light responsive to the emitted light signal, wherein the backscattered light is affected by one or both of seismic signals reflected from a subterranean structure and noise. Output data corresponding to the backscattered light is provided to a processing subsystem to determine a characteristic of the subterranean structure.
摘要翻译： 地震采集系统包括分布式光学传感器（具有光纤）和被配置为产生发射到光纤中的光信号的询问子系统。 询问子系统从分布式光学传感器接收响应于发出的光信号的反向散射光，其中后向散射光受到从地下结构和噪声反射的地震信号中的一个或两个的影响。 与后向散射光对应的输出数据被提供给处理子系统以确定地下结构的特征。
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公开(公告)号：US20130188168A1
公开(公告)日：2013-07-25
申请号：US13354629
申请日：2012-01-20
申请人： Arthur H. Hartog , Barry Read
发明人： Arthur H. Hartog , Barry Read
CPC分类号： G01B11/161 , E21B47/102 , E21B47/123 , G01V8/02 , G01V9/00
摘要： Fiber optic monitoring of dimensional changes within a subterranean formation includes deploying a fiber optic cable assembly in a wellbore and attaching the cable assembly to first and second attachment points on either side of the formation. A surface fiber optic measurement system measures changes in the optical path length between the attachment points of the fiber optic cable assembly. The changes in optical path length are directly indicative of dimensional changes within the formation.
摘要翻译： 地下地层内的尺寸变化的光纤监测包括将光纤电缆组件部署在井筒中，并将缆线组件附接到地层两侧的第一和第二附接点。 表面光纤测量系统测量光纤电缆组件的附接点之间的光程长度的变化。 光程长度的变化直接表示地层内的尺寸变化。
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