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1. 发明申请

WO2018005539A1 DISTRIBUTED DYNAMIC STRAIN FIBER OPTICS MEASUREMENT BY BRILLOUIN OPTICAL TIME-DOMAIN REFLECTOMETRY 审中-公开
标题翻译： BRILLOUIN光学时域反射测量分布式动态应变光纤测量
公开(公告)号：WO2018005539A1
公开(公告)日：2018-01-04
申请号：PCT/US2017/039563
申请日：2017-06-27
申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
发明人： SOGA, Kenichi , LI, Bo , YAN, Jize , LUO, Linqing , YU, Yifei
IPC分类号： G01L1/24
CPC分类号： G01D5/35364 , G01D5/35348 , G01K11/32 , G01K2011/322 , G01L1/242 , G01M11/3118
摘要： A system and method for distributed dynamic strain measurement using optical fiber that is based on Brillouin optical time-domain reflectometry (BOTDR) with stimulated Brillouin scattering (SBS). A short-time Fourier transform (STFT) is used to rebuild the Brillouin frequency shift (BFS) of the SBS scattered signal to perform the dynamic strain measurement.
摘要翻译：用于使用基于布里渊光时域反射（BOTDR）和受激布里渊散射（SBS）的光纤的分布式动态应变测量的系统和方法。短时傅里叶变换（STFT）用于重建SBS散射信号的布里渊频移（BFS），以执行动态应变测量。

2. 发明申请

WO2017196599A1 OPTICAL FIBER COMMUNICATIONS WITH COMPOSITE STRUCTURAL MONITORING 审中-公开
标题翻译：光纤通信与复合结构监测
公开(公告)号：WO2017196599A1
公开(公告)日：2017-11-16
申请号：PCT/US2017/030762
申请日：2017-05-03
申请人： NORTHROP GRUMMAN SYSTEMS CORPORATION
发明人： EVANS, David, W.
IPC分类号： G01M5/00 , G01L1/24
CPC分类号： G01N21/8806 , B64D45/00 , B64D2045/0085 , B64F5/60 , G01L1/242 , G01M5/0016 , G01M5/0033 , G01M5/0066 , G01M17/007 , G01N21/27 , G01N2021/8472 , G01N2201/088 , H04B10/07953 , H04B10/25
摘要： A method for detecting defects in a composite structure, such as in an aircraft structure, that includes sending an optical signal down an optical fiber embedded in the composite structure and analyzing the optical signal at a detector. If it is determined that the optical signal is turning on and off or an increase in the bit error rate is occurring at the detector, the composite structure may be delaminating or the composite structure may be somehow damaged. If it is determined that the composite structure is damaged, the optical signal can be sent down a different optical fiber that may not be at a location where the composite structure is damaged, and a continuous beam of light can be sent down the optical fiber that is at the damaged part of the composite structure to determine whether the damage is increasing.
摘要翻译：一种用于检测复合结构中的缺陷的方法，例如在飞行器结构中，其包括沿着嵌入复合结构中的光纤向下发送光信号并且在检测器处分析光信号。如果确定光信号开启和关闭或在检测器处出现比特差错率的增加，则复合结构可能分层，或者复合结构可能以某种方式损坏。如果确定复合结构被损坏，则可以将光信号沿着可能不在复合结构被损坏的位置处的不同光纤向下发送，并且可以沿光纤向下发送连续光束，位于复合结构的受损部位，以确定损伤是否在增加。

3. 发明申请

WO2017014903A1 STRAIN GAUGE SPAN BLOCK 审中-公开
标题翻译：应变计数块
公开(公告)号：WO2017014903A1
公开(公告)日：2017-01-26
申请号：PCT/US2016/039002
申请日：2016-06-23
申请人： TESCO CORPORATION
发明人： DEWALD, Brian Dale
IPC分类号： E21B44/00 , E21B47/00 , E21B47/01 , E21B3/02 , G01L1/22
CPC分类号： G01G3/1402 , E21B3/02 , E21B44/00 , E21B47/0006 , E21B47/01 , G01L1/18 , G01L1/2243 , G01L1/242
摘要： A system includes a span block (48) configured to couple with an extension (44) from a top drive (42) at a first end (76) of the span block and configured to couple to a tubular (38) at a second end (78) of the span block. The system also includes a sensor block (72) of the span block. The sensor block extends between the first end and the second end of the span block. Moreover, the sensor block is configured to provide an electronic indication of deformation of a portion of the sensor block in response to forces placed on the span block.
摘要翻译：一种系统包括跨距块（48），该跨距块（48）构造成在跨越块的第一端（76）处与顶部驱动器（42）耦合，并被配置成在第二端处耦合到管状件（38）（78）。该系统还包括跨距块的传感器块（72）。传感器块在跨距块的第一端和第二端之间延伸。此外，传感器块被配置为响应于放置在跨距块上的力而提供传感器块的一部分的变形的电子指示。

4. 发明申请

WO2017001826A1 MONITORING OF POWER CABLES WITH DISTRIBUTED FIBRE OPTIC SENSING 审中-公开
标题翻译：用分布式光纤传感技术监测电源线
公开(公告)号：WO2017001826A1
公开(公告)日：2017-01-05
申请号：PCT/GB2016/051889
申请日：2016-06-23
申请人： OPTASENSE HOLDINGS LIMITED
发明人： GODFREY, Alastair
IPC分类号： G01R31/02 , G01L1/24 , G01R31/08 , H02G1/00 , G01D5/56 , G01D5/353
CPC分类号： G01R31/083 , G01D5/353 , G01D5/35338 , G01D5/56 , G01L1/242 , G01R31/021 , G01R31/081 , G01R33/0327 , G02B6/4416 , G02B6/506 , H02G9/02
摘要： This application relates to methods and apparatus for monitoring power cables (100) carrying multiple AC phases to detect deformation of the power cable. A distributed fibre optic interrogator unit (302) is used to interrogate a sensing optical fibre (301) coupled to the power cable to provide a measurement signal from each of a plurality of longitudinal sensing portions of the sensing optical fibre. An analyser (602) is configured to analyse the measurements signals to detect a characteristic of an imbalance in magnetic fields. The characteristic may be a signal component with a characteristic frequency related to the power frequency and number of AC phases, the sensing optical fibre may be sensitised to magnetic fields and the characteristic frequency may be 2n times the power frequency where n is the number of phases, e.g. six times the power frequency for three phase AC.
摘要翻译：本申请涉及用于监视承载多个AC相的电力电缆（100）的方法和装置，以检测电力电缆的变形。分布式光纤询问器单元（302）用于询问耦合到电力电缆的感测光纤（301），以提供来自感测光纤的多个纵向感测部分中的每一个的测量信号。分析器（602）被配置为分析测量信号以检测磁场不平衡的特性。该特性可以是具有与功率频率和AC相位数相关的特征频率的信号分量，感测光纤可以对磁场敏感，并且特征频率可以是功率频率的2n倍，其中n是相位数，例如三相交流电源频率的六倍。

5. 发明申请

WO2016183396A1 FIBRE-OPTIC SENSING 审中-公开
标题翻译：光纤传感
公开(公告)号：WO2016183396A1
公开(公告)日：2016-11-17
申请号：PCT/US2016/032231
申请日：2016-05-13
申请人： SCHLUMBERGER TECHNOLOGY CORPORATION , SCHLUMBERGER CANADA LIMITED , SERVICES PETROLIERS SCHLUMBERGER , SCHLUMBERGER TECHNOLOGY B.V.
发明人： MOLTENI, Daniele
IPC分类号： G01N21/47 , G01B11/16
CPC分类号： G01L1/242 , E21B47/123 , G01D5/35361 , G01H9/004 , G01L1/247
摘要： Processing strain measurement signals from a first measured signal representing a first received backscattered optical signal for a first sensor - the first measured signal associated with a first phase signal - and a second measured signal representing a second received backscattered optical signal for a second sensor. The second measured signal is associated with a second phase signal constituting a consolidation of the first phase signal and an additional phase signal - where the additional phase signal is unrecoverable from the first measured signal. The first phase signal is determined from the first measured signal and processed. The second phase signal is determined from the second measured signal, where the first phase signal and additional phase signal are indistinguishable in the phase domain. The second phase signal is processed to obtain the additional phase signal and a strain measurement signal is constructed using the processed first phase signal and additional phase signal.
摘要翻译：处理来自表示用于第一传感器的第一接收反向散射光信号的第一测量信号的第一测量信号 - 与第一相位信号相关联的第一测量信号，以及表示第二传感器的第二接收反向散射光信号的第二测量信号。第二测量信号与构成第一相位信号和附加相位信号的合并的第二相位信号相关联，其中附加相位信号不能从第一测量信号中恢复。第一相位信号由第一测量信号确定并进行处理。从第二测量信号确定第二相位信号，其中第一相位信号和附加相位信号在相位域中是不可区分的。处理第二相位信号以获得附加相位信号，并且使用经处理的第一相位信号和附加相位信号来构造应变测量信号。

6. 发明申请

WO2016112147A1 GAUGE LENGTH OPTIMIZATION IN DISTRIBUTED VIBRATION SENSING 审中-公开
标题翻译：分布式振动传感中的测量长度优化
公开(公告)号：WO2016112147A1
公开(公告)日：2016-07-14
申请号：PCT/US2016/012410
申请日：2016-01-07
申请人： SCHLUMBERGER CANADA LIMITED , SERVICES PETROLIERS SCHLUMBERGER , SCHLUMBERGER TECHNOLOGY B.V. , SCHLUMBERGER TECHNOLOGY CORPORATION
发明人： DEAN, Timothy , CUNY, Theo , HARTOG, Arthur
IPC分类号： G01H1/12 , G01M7/02
CPC分类号： G01H9/004 , E21B47/01 , G01L1/242 , G01M5/0025 , G01M5/0091 , G01M7/02 , G01M7/025 , G01V2210/1429
摘要： A technique facilitates the use and application of a distributed vibration sensing system in, for example, a well application. The technique enables selection of a desired gauge length to achieve an optimum trade-off between the spatial resolution of a distributed vibration sensing/distributed acoustic sensing system and signal-to-noise ratio. The optimum gauge length can vary according to specific factors, e.g. depth within a well, and the present technique can be used to account for such factors in selecting an optimal gauge length which facilitates accurate collection of data on dynamic strain.
摘要翻译：一种技术有助于在例如井应用中使用和应用分布式振动感测系统。该技术使得能够选择期望的标距长度以实现分布式振动感测/分布式声学感测系统的空间分辨率与信噪比之间的最佳权衡。最佳标距长度可根据具体因素而变化，例如深度在井内，并且本技术可以用于考虑这样的因素，以选择最佳的标距长度，这有助于数据的动态应变的准确收集。

7. 发明申请

WO2016095324A1 光纤感应层及其监测系统审中-公开
公开(公告)号：WO2016095324A1
公开(公告)日：2016-06-23
申请号：PCT/CN2015/071558
申请日：2015-01-26
申请人：汇嘉健康生活科技股份有限公司
发明人：杨淑贞
IPC分类号： A61B5/0205 , G01L1/24
CPC分类号： G01D5/353 , A61B5/0059 , A61B5/0205 , A61B5/02055 , A61B5/0873 , A61B5/1102 , A61B5/6804 , A61B5/6891 , A61B5/6892 , A61B2562/0247 , A61B2562/0271 , A61B2562/029 , G01D5/35374 , G01L1/242
摘要：光纤感应层（10），包括两层上下叠置的压力敏感组件薄膜（11）以及至少一软质平滑薄膜（12）将两层压力敏感组件薄膜（11）之间的空间分隔成至少两个隔层（13），同一隔层（13）设有至少一沿第一方向延伸呈多节"S"形串接走线（121）的光纤行段（122），上下相邻光纤行段（122）的走线（121）折弯（123）错开叠置。光纤感应区域相互填补感应盲区，使光纤感应层突破光纤易断特性，快速、准确地检测呼吸、心跳、睡眠、温度及湿度，具有敏感度高且可调整、分辨率高、抗电磁干扰、敏感度均匀的特点。

8. 发明申请

WO2016033199A1 REAL-TIME FIBER OPTIC INTERFEROMETRY CONTROLLER 审中-公开
标题翻译：实时光纤光栅干涉仪
公开(公告)号：WO2016033199A1
公开(公告)日：2016-03-03
申请号：PCT/US2015/046973
申请日：2015-08-26
申请人： ADELOS, INC.
发明人： PRESTON, Dan, Alan , DOLL, Stephen, Timothy , PHILP, James, Alexander , PROVIDENZA, John, R. , VANCE, Trinitie, Marie
IPC分类号： G01D5/353 , G01H9/00 , G01M11/02
CPC分类号： G01M11/319 , G01B9/0209 , G01B11/161 , G01D5/35319 , G01H9/004 , G01L1/242 , G01M11/3145 , H04B10/0775 , H04B10/2575
摘要： A modular fiber optic interferometry control system and method for extracting information from superimposed waves is disclosed. The system comprises a first module for converting a radio frequency input to a multiplexed binary data stream, a second module for correlating a pseudo random number (PRN) reference with a received PRN code modulated backscattered signal, and a third module comprising control logic. In some embodiments the system further comprises one or more of a fourth module for generating a power stream, a fifth module for event interrogation, and a sixth module for noise reduction.
摘要翻译：公开了一种用于从叠加波提取信息的模块化光纤干涉测量控制系统和方法。该系统包括用于将射频输入转换为多路复用二进制数据流的第一模块，用于使伪随机数（PRN）参考与接收的PRN码调制反向散射信号相关的第二模块，以及包括控制逻辑的第三模块。在一些实施例中，系统还包括用于产生功率流的第四模块中的一个或多个，用于事件询问的第五模块和用于降噪的第六模块。

9. 发明申请

WO2015164243A1 METHOD OF ENHANCING CONTRAST IN PRISM COUPLING MEASUREMENTS OF STRESS 审中-公开
标题翻译：在压力耦合测量中增强对比度的方法
公开(公告)号：WO2015164243A1
公开(公告)日：2015-10-29
申请号：PCT/US2015/026633
申请日：2015-04-20
申请人： CORNING INCORPORATED
发明人： ROUSSEV, Rostislav Vatchev , YOUNG, Emily Elizabeth
IPC分类号： G02B6/10
CPC分类号： G01J3/42 , G01J3/0205 , G01J3/0229 , G01L1/241 , G01L1/242 , G01N21/4133 , G01N21/552 , G01N2021/4166
摘要： A method and apparatus for improving contrast in prism coupling measurements of waveguide mode spectra, wherein the measured waveguide sample has a surface region of rapidly decreasing index, characterized with normalized slope >0.0004. An opaque light-blocking element is placed in the portion of the light beam closest to the plane of the contact between prism and measured sample, on the input side, output side or both sides of the prism. The light blocking element prevents light from the light source to reach a portion of the length of the prism-sample coupling interface along the optical path, prevents light reflected from a portion of the aforementioned length to reach the detector, or both when input and output light-blocking elements are used.
摘要翻译：一种用于改善波导模式光谱的棱镜耦合测量中的对比度的方法和装置，其中所测量的波导样品具有快速降低指数的表面区域，其特征在于归一化斜率> 0.0004。在棱镜的输入侧，输出侧或两侧的最靠近棱镜与被测样品的接触平面的光束的部分中放置不透明遮光元件。遮光元件防止来自光源的光线沿着光路到达棱镜 - 样品耦合界面的长度的一部分，防止从上述长度的一部分反射的光到达检测器，或当输入和输出时两者使用遮光元件。

10. 发明申请

WO2015120888A1 DUAL-PROBE SWEEP-FREE STIMULATED BRILLOUIN OPTICAL DISTRIBUTED SENSING METHOD AND DEVICE 审中-公开
标题翻译：双探头无刺激式荧光光学分布式感应方法和装置
公开(公告)号：WO2015120888A1
公开(公告)日：2015-08-20
申请号：PCT/EP2014/052729
申请日：2014-02-12
申请人： OMNISENS SA
发明人： SANGHOON, Chin
IPC分类号： G01D5/26 , G01B11/16 , G01K5/56 , G01D5/353 , G01L1/24
CPC分类号： G01D5/266 , G01B11/18 , G01D5/268 , G01D5/35364 , G01K11/32 , G01K2011/322 , G01L1/242
摘要： The present invention concerns a Brillouin optical distributed sensing method, comprising steps of (i) providing an optical pulsed pump wave (41) at a pump frequency, (ii) providing a first and a second optical probe wave (44, 45) respectively at a first and a second probe frequency, (iii) detecting a stimulated Brillouin scattering signal resulting from the respective interactions in a sensing optical fiber of the first and the second optical probe waves (44, 45) with the optical pulsed pump wave (41), wherein the first and the second optical probe wave (44, 45) are respectively spectrally located within the Stokes and the anti-Stokes Brillouin spectra (42, 43) of the optical pulsed pump wave (41), and the average probe frequency corresponding to an average value of the first and the second probe frequencies is different but close to within a half spectral width of the Stokes or the anti-Stokes Brillouin spectrum (42, 43) from the pump frequency. The present invention concerns also a device for implementing the method.
摘要翻译：本发明涉及一种布里渊光分布式感测方法，包括以下步骤：（i）以泵浦频率提供光脉冲泵浦波（41），（ii）分别在第一和第二光探针波（44,45）第一和第二探针频率，（iii）利用光脉冲泵浦波（41）检测由第一和第二光学探针波（44,45）的感测光纤中的各个相互作用产生的受激布里渊散射信号，，其中所述第一和第二光学探针波（44,45）分别光谱地位于所述斯托克斯和光脉冲泵浦波（41）的反斯托克斯布里渊光谱（42,43）内，并且所述平均探针频率对应于第一和第二探针频率的平均值不同但接近于斯托克斯的一半光谱宽度或来自泵浦频率的反斯托克斯布里渊光谱（42,43）。本发明还涉及一种用于实现该方法的装置。

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