公开(公告)号：US20140363126A1

公开(公告)日：2014-12-11

申请号：US14296978

申请日：2014-06-05

申请人： Technobis Group B.V.

发明人： Pieter Lucas Kat

IPC分类号： G02B6/34

CPC分类号： G02B6/34 ,  G01B11/18 ,  G01D5/35316 ,  G01D5/35335 ,  G01D5/35387

摘要： A fiber Bragg grating interrogator assembly is described. Examples of the fiber Bragg grating interrogator assembly include an optical fiber including a fiber Bragg grating having a variable Bragg wavelength (λB) and a dynamic range of interest (Δλdyn,B) over which the Bragg wavelength (λB) can shift during use. The fiber Bragg grating interrogator assembly also includes a response analyzer having a spectrally selective device with an input port to which the optical fiber is operably connected, and a plurality of output ports of which each output port is associated with a respective spectral range (Δλn). The spectral ranges (Δλn, Δλn+1, Δλn+2) of each at least three successive output ports partially overlap, such that the FBG's Bragg wavelength (λB) falls inside the spectral ranges (Δλn, Δλn+1, Δλ+2) of at least three successive output ports over the dynamic range of interest (Δλdyn,B) of the FBG.

摘要翻译： 描述了光纤布拉格光栅询问器组件。 光纤布拉格光栅询问器组件的示例包括光纤，其包括具有可变布拉格波长（λB）的光纤布拉格光栅和感兴趣的动态范围（＆Dgr;λdyn，B），布拉格波长（λB）可以在使用期间移动 。 光纤布拉格光栅询问器组件还包括具有光谱选择性装置的响应分析器，其具有光纤可操作地连接的输入端口，以及多个输出端口，每个输出端口与相应的光谱范围（＆Dgr; λn）。 每个至少三个连续输出端口的光谱范围（＆Dgr;λn，＆Dgr;λn+ 1，＆Dgr;λn+ 2）部分重叠，使得FBG的布拉格波长（λB）落入光谱范围内（＆Dgr;λn， 在FBG的感兴趣的动态范围（＆Dgr;λdyn，B）上的至少三个连续输出端口的＆Dgr;λn+ 1，＆Dgr;λ+ 2）。

公开(公告)号：US20140061452A1

公开(公告)日：2014-03-06

申请号：US14114085

申请日：2012-04-26

申请人： Wolfgang Schade

发明人： Wolfgang Schade

IPC分类号： G01D5/353

CPC分类号： G01D5/3537 ,  G01D5/35316 ,  G01D5/35383 ,  G01D5/35387 ,  G01M11/083 ,  G02B6/02195 ,  G02B6/12004

摘要： An apparatus for measuring state variables with at least one fiber-optic sensor, containing at least one optical coupler, at least one filter element and at least one photoelectric converter, where the optical coupler, the filter element and the photoelectric converter are integrated on a substrate, and the filter element contains at least one Bragg grating which is designed to supply the light portion reflected by the Bragg grating to the photoelectric converter.

摘要翻译： 一种用至少一个光纤传感器测量状态变量的装置，其包含至少一个光耦合器，至少一个滤光元件和至少一个光电转换器，其中所述光耦合器，滤光元件和光电转换器集成在 衬底，并且滤光器元件包含至少一个布拉格光栅，其被设计成将由布拉格光栅反射的光部分提供给光电转换器。

公开(公告)号：US20130209029A1

公开(公告)日：2013-08-15

申请号：US13396597

申请日：2012-02-15

申请人： Ian Bradford Mitchell ,  Mikko Jaaskelainen ,  Etienne M. Samson ,  John L. Maida, JR.

发明人： Ian Bradford Mitchell ,  Mikko Jaaskelainen ,  Etienne M. Samson ,  John L. Maida, JR.

IPC分类号： G02B6/26

CPC分类号： G01D5/35387 ,  G01D5/268 ,  G01D5/353 ,  G01D5/35361 ,  G01D5/35383 ,  G01K11/32 ,  G01K2011/324

摘要： An apparatus and method for use in distributed temperature sensing (DTS) systems to reduce coherent Rayleigh scattering in fiber optic cables by using photonic crystal fibers.

摘要翻译： 一种用于分布式温度感测（DTS）系统的设备和方法，通过使用光子晶体光纤来减少光纤电缆中的相干瑞利散射。

公开(公告)号：US20120075633A1

公开(公告)日：2012-03-29

申请号：US12893115

申请日：2010-09-29

申请人： Hua Xia ,  Glen Peter Koste ,  Axel Busboom ,  Christopher Anthony Kaminski

发明人： Hua Xia ,  Glen Peter Koste ,  Axel Busboom ,  Christopher Anthony Kaminski

IPC分类号： G01N21/88 ,  G01N21/55 ,  G01N21/94

CPC分类号： H02K15/00 ,  G01D5/35316 ,  G01D5/35387 ,  G01R31/34 ,  H02K11/25 ,  H02K11/35

摘要： An electrical machine component monitoring system includes a light source that provides an optical signal through a fiber optic cable and a fiber optic sensing component positioned on the electrical machine component or at a standoff distance from the electrical machine component to obtain a responsive optical signal representative of a condition of the electrical machine component. The system further includes a photodetector to receive the responsive optical signal from the fiber optic sensing component and to convert the responsive optical signal to an electrical signal. A processing circuitry is also provided in the system for determining information regarding dirt on the electrical machine component by analyzing the electrical signal.

摘要翻译： 一种电机部件监视系统，包括：光源，其通过光纤电缆提供光信号;以及光纤传感部件，其位于电机部件上，或者与电机部件隔开距离，以获得表示 电机部件的状况。 该系统还包括光电检测器，用于从光纤感测部件接收响应光信号，并将响应光信号转换为电信号。 在系统中还提供处理电路，用于通过分析电信号来确定关于电机部件上的污物的信息。

公开(公告)号：US20110181871A1

公开(公告)日：2011-07-28

申请号：US12695613

申请日：2010-01-28

申请人： BROOKS A. CHILDERS ,  ROBERT M. HARMAN ,  ROGER G. DUNCAN

发明人： BROOKS A. CHILDERS ,  ROBERT M. HARMAN ,  ROGER G. DUNCAN

IPC分类号： G01N21/55 ,  G01N21/00

CPC分类号： G01D5/35316 ,  G01D5/35387 ,  G01M11/3172

摘要： An apparatus for estimating a parameter, the apparatus includes: an optical fiber; a component in communication with the optical fiber and configured to interact with light at a wavelength related to the parameter; and an optical interrogator in communication with the optical fiber and configured to: illuminate the optical fiber with a series of light inputs, each light input in the series having a substantially constant unique optical wavelength and swept-frequency amplitude modulation; and receive a resulting light signal associated with each light input in the series; wherein the resulting light signals associated with the series of light inputs are used to estimate the parameter.

摘要翻译： 一种用于估计参数的装置，所述装置包括：光纤; 与所述光纤通信并被配置成与所述参数相关的波长的光相互作用的部件; 以及光学询问器，其与所述光纤通信并且被配置为：用一系列光输入照射所述光纤，所述串联中的每个光输入具有基本上恒定的唯一光波长和扫频振幅调制; 并接收与该系列中的每个光输入相关联的结果光信号; 其中与所述一系列光输入相关联的所得光信号用于估计所述参数。

公开(公告)号：US20080089636A1

公开(公告)日：2008-04-17

申请号：US11957181

申请日：2007-12-14

申请人： Trevor MacDougall ,  John Grunbeck ,  James Dunphy ,  Domino Taverner ,  Guy Daigle ,  Richard Jones ,  Milton Ives

发明人： Trevor MacDougall ,  John Grunbeck ,  James Dunphy ,  Domino Taverner ,  Guy Daigle ,  Richard Jones ,  Milton Ives

IPC分类号： G02B6/00

CPC分类号： G01K11/3206 ,  E21B47/065 ,  E21B47/123 ,  G01D5/35303 ,  G01D5/35316 ,  G01D5/35354 ,  G01D5/35387 ,  G01K1/026 ,  Y10T29/49826

摘要： Methods and apparatus enable monitoring conditions in a well-bore using multiple cane-based sensors. The apparatus includes an array of cane-based Bragg grating sensors located in a single conduit for use in the well-bore. For some embodiments, each sensor is located at a different linear location along the conduit allowing for increased monitoring locations along the conduit.

摘要翻译： 方法和设备可以使用多个基于手杖的传感器监测井眼状况。 该装置包括位于用于井眼的单个管道中的基于甘蔗的布拉格光栅传感器阵列。 对于一些实施例，每个传感器沿着导管位于不同的线性位置，允许沿导管增加监测位置。

公开(公告)号：US20070009197A1

公开(公告)日：2007-01-11

申请号：US10570001

申请日：2004-09-02

申请人： Stephen Poland ,  Brooks Childers ,  Clark Boyd

发明人： Stephen Poland ,  Brooks Childers ,  Clark Boyd

IPC分类号： G02B6/00 ,  G01J1/04

CPC分类号： G01K11/3213 ,  G01D5/35387

摘要： A fiber optic system (10, 210) including a plurality of optical sensors, each with an identification system (20, 120, 220, 320). The fiber optic system (10) includes a fiber (12, 112) extending a distance, a demodulator (14), and at least one coupler (16, 116), optical sensor (18, 118) and corresponding identification system (20, 120). The identification system (20, 120) is powered by light shunted from the fiber (12, 112) by the coupler (16, 116) to a modulating device (24, 124). The modulating device (24, 124) modulates the light and transmits it to a power converting device (16, 116), which transforms the light energy into electrical energy. The electrical energy powers a high temperature integrated circuit (28, 128) upon which is stored a digital identification of a respective optical sensor (18, 118). The integrated circuit (28, 128), upon being powered up, sends a modulated response (30, 130) back up to the surface through the modulating device (24, 124). Alternatively, a passive identification system (210) is described, where reflective devices (220, 320) are placed at pre-determined locations along the length of the fiber (212, 312). As the optical beam passes through the reflective devices (220, 320), identification information for a sensor (218, 318) is encoded onto the beam. An optical frequency domain reflectometer (214) generates the optical beam and detects the encoded information.

摘要翻译： 一种包括多个光学传感器的光纤系统（10,210），每个具有识别系统（20,120,220,320）。 光纤系统（10）包括延伸一定距离的光纤（12,112），解调器（14）和至少一个耦合器（16,116），光学传感器（18,118）和相应的识别系统（20， 120）。 识别系统（20,120）由通过耦合器（16,116）从光纤（12,112）分流到调制装置（24,124）的光供电。 调制装置（24,124）调制光并将其传输到功率转换装置（16,116），其将光能转换成电能。 电能为高温集成电路（28,128）供电，在其上存储相应的光学传感器（18,118）的数字标识。 集成电路（28,128）在上电时通过调制装置（24,124）发送回到表面的调制响应（30,130）。 或者，描述了被动识别系统（210），其中反射装置（220,320）被放置在沿着光纤（212,312）的长度的预定位置处。 当光束通过反射设备（220,320）时，用于传感器（218,318）的识别信息被编码到光束上。 光频域反射计（214）产生光束并检测编码信息。

公开(公告)号：US07060967B2

公开(公告)日：2006-06-13

申请号：US10963081

申请日：2004-10-12

申请人： Dag Thingbo ,  Jon Thomas Kringlebotn ,  Hilde Nakstad ,  Erlend Ronnekleiv

发明人： Dag Thingbo ,  Jon Thomas Kringlebotn ,  Hilde Nakstad ,  Erlend Ronnekleiv

IPC分类号： G01J1/04 ,  G02B6/26

CPC分类号： G01D5/3539 ,  G01D5/35316 ,  G01D5/35387 ,  G02B6/2932 ,  G02B6/29382

摘要： An optical wavelength readout system for application in optical sensing systems is disclosed. The system includes a Master unit including a wavelength swept optical source for launching light into a string of optical sensors, and a detection and processing unit for detecting and processing the light emitted by the source. The system also includes a Slave unit including a light coupling device for coupling light from the light source into the string of sensors and for coupling light reflected from the string of sensors to a detection and processing unit arranged to detect and process the reflected light. The Master unit includes a wavelength reference unit adapted to make a reference signal available to other parts of the sensing system. The reference signal represents a generally exact relation between the wavelength of the light emitted from the source and time.

摘要翻译： 公开了一种用于光学传感系统中的光学波长读出系统。 该系统包括：主单元，包括用于将光发射到一串光学传感器中的波长扫描光源;以及检测和处理单元，用于检测和处理由源发射的光。 该系统还包括从单元，其包括用于将来自光源的光耦合到传感器串中并用于将从传感器串反射的光耦合到被布置成检测和处理反射光的检测和处理单元的光耦合装置。 主单元包括适于使参考信号可用于感测系统的其它部分的波长参考单元。 参考信号表示从源发射的光的波长与时间之间的一般精确关系。

公开(公告)号：US06825714B2

公开(公告)日：2004-11-30

申请号：US10333695

申请日：2003-01-22

申请人： Paul Louis Greene ,  William Christopher Knaack ,  Gregory Alan Gibbons

发明人： Paul Louis Greene ,  William Christopher Knaack ,  Gregory Alan Gibbons

IPC分类号： H04R144

CPC分类号： H04L27/223 ,  G01D5/35306 ,  G01D5/35387 ,  H04J14/02 ,  H04L27/2096 ,  H04L2027/0067

摘要： Apparatus for eliminating sign uncertainty in a coherent phase generated carrier demodulator in a multi-channel sensor system has a downconverter array arranged to separate the in-phase component I and the quadrature phase component of the sensor output for each channel. A coordinate transformer uses the in-phase component and quadrature phase component to calculate an arctangent for the phase angle for each channel. A digital signal processor adds 180° to each arctangent calculation for which the tangent is a negative number.

公开(公告)号：US06788835B2

公开(公告)日：2004-09-07

申请号：US10422093

申请日：2003-04-24

申请人： Behzad Moslehi ,  Richard James Black ,  Herbert John Shaw ,  Keiichiro Toyama

发明人： Behzad Moslehi ,  Richard James Black ,  Herbert John Shaw ,  Keiichiro Toyama

IPC分类号： G02B600

CPC分类号： G01L1/246 ,  G01B11/16 ,  G01D5/35316 ,  G01D5/35354 ,  G01D5/35387 ,  G02B6/02057 ,  G02B6/022 ,  G02B6/2932 ,  G02B6/29395 ,  G02B6/29398

摘要： A fiber optic sensor comprises two independent fibers having Bragg gratings which are coupled to commutating broadband optical sources through splitters and wavelength discriminators. The ratio of detected optical energy in each of two detectors examining the wave intensity returned to a wavelength discriminator coupled with the characteristic of the wavelength discriminator determines the wavelength returned by the grating. In another embodiment, tunable filters are utilized to detect minimum returned wave energy to extract a sensor wavelength Reference to the original grating wavelength indicates the application of either temperature or strain to the grating. In another embodiment, a plurality of Bragg grating sensor elements is coupled to sources and controllers wherein a dimensional change in a fiber having a Bragg grating is detected using a measurement system comprising broad-band sources, optical power splitters, a high-sensitivity wavelength discriminator, optical detectors, and a controller.