公开(公告)号：US08144314B2

公开(公告)日：2012-03-27

申请号：US12071059

申请日：2008-02-14

Applicant: Yoshinori Yamamoto

Inventor： Yoshinori Yamamoto

IPC: G01N21/00

CPC classification number: G01K11/32 ,  G01K2011/322 ,  G01K2203/00 ,  G01L1/242 ,  G01M11/088 ,  G01M11/319 ,  G01M11/39

Abstract: The present invention relates to a spectral measurement apparatus and measurement method utilizing Brillouin scattering, which judge the state of the temperature or strain of an optical fiber more quickly. The spectral measurement apparatus comprises a light source, an analysis section, and an anomaly judgment section. The light source outputs pumping light and probe light. The pumping light and probe light thus output are caused to enter in opposite directions to the sensing fiber. The analysis section analyzes the gain received by the probe light as a result of the Brillouin scattering. The anomaly judgment section judges the state relating to the temperature or strain of the sensing fiber on the basis of the analysis result of the analysis section. The frequency difference ν between the pumping light and probe light is set within a predetermined frequency difference setting range. The frequency difference setting range is a range which includes the frequency difference at which the peak value of the reference gain spectrum of the gain received by the probe light is obtained when the temperature or strain of the sensing fiber is in the reference state and is set at or below the line width of the reference gain spectrum

Abstract translation: 本发明涉及一种利用布里渊散射的光谱测量装置和测量方法，其更快地判断光纤的温度或应变状态。 光谱测量装置包括光源，分析部分和异常判断部分。 光源输出泵浦光和探测灯。 使得如此输出的泵浦光和探测光沿与传感光纤相反的方向进入。 分析部分分析了作为布里渊散射的结果的探测光所接收的增益。 异常判断部基于分析部的分析结果来判断与感测光纤的温度或应变有关的状态。 频率差 在泵浦光和探测光之间设置在预定的频率差设定范围内。 频率差设定范围是包括当感测光纤的温度或应变处于基准状态并被设置时获得由探测光接收到的增益的参考增益谱的峰值的频率差的范围 等于或低于参考增益谱的线宽

公开(公告)号：US20120067118A1

公开(公告)日：2012-03-22

申请号：US13221280

申请日：2011-08-30

Applicant: Arthur Hartog ,  Kamal Kader

Inventor： Arthur Hartog ,  Kamal Kader

IPC: E21B49/00 ,  G02B6/00 ,  G01N21/17

CPC classification number: G01H9/004 ,  E21B41/00 ,  G01D5/35361 ,  G01L1/242 ,  G01M11/083 ,  G02B6/10 ,  G02B26/103 ,  G02F1/295 ,  G02F1/2955

Abstract: A fiber optic sensor system includes an optical source to output a first optical signal to launch into an optical fiber, and a coherent detector to mix a coherent Rayleigh backscatter signal generated by the optical fiber in response to the first optical signal with a second optical signal output by the optical source and to generate a mixed output signal. A phase detection and acquisition system determines a phase difference between first and second locations along the optical fiber based on phase information extracted from the mixed output signal and combines the phase information extracted from multiple acquisitions to detect strain on the optical fiber sensor.

Abstract translation: 光纤传感器系统包括用于输出第一光信号以发射到光纤中的光源，以及相干检测器，用于响应于第一光信号与第二光信号混合由光纤产生的相干瑞利反向散射信号 由光源输出并产生混合输出信号。 相位检测和采集系统基于从混合输出信号提取的相位信息确定沿着光纤的第一和第二位置之间的相位差，并且组合从多个获取中提取的相位信息以检测光纤传感器上的应变。

公开(公告)号：US08135244B1

公开(公告)日：2012-03-13

申请号：US11939580

申请日：2007-11-14

Applicant: Robert K. Sander ,  Kirill K. Zhuravlev ,  Richard D. Schaller ,  Jeffrey M. Pietryga ,  Michael Whitehead

Inventor： Robert K. Sander ,  Kirill K. Zhuravlev ,  Richard D. Schaller ,  Jeffrey M. Pietryga ,  Michael Whitehead

IPC: G02B6/00

CPC classification number: G01L11/025 ,  G01L1/242 ,  G01L5/14

Abstract: A fiber-based optical pressure-sensor, made using semiconductor nanocrystal quantum dots (NQDs) as the active transducing material, provides response time fast enough for shock wave measurements. For NQDs, the shift in band gap as a result of applied pressure can be observed as a shift of the photoluminescence (PL) peak. Further, the shift of the principal absorbance feature allows pressure measurements faster than those obtainable by following the PL peak.

Abstract translation: 使用半导体纳米晶体量子点（NQD）作为主动转换材料制成的基于光纤的光学压力传感器为冲击波测量提供足够快的响应时间。 对于NQD，作为施加压力的结果，带隙的移位可以被观察为光致发光（PL）峰的移位。 此外，主要吸光度特征的偏移允许压力测量比通过遵循PL峰可获得的测量更快。

公开(公告)号：US20110255077A1

公开(公告)日：2011-10-20

申请号：US13141290

申请日：2009-12-22

Applicant: Alan John Rogers

Inventor： Alan John Rogers

IPC: G01D5/353

CPC classification number: G01L1/242 ,  G01D5/35358

Abstract: A distributed optical fibre sensor is described. The sensor uses a sensor fibre (10) having a low or zero intrinsic birefringence that is responsive to an environmental parameter (24) such as pressure. Probe light pulses having a diversity of launch polarisation states are used to reduce signal fading and polarisation dependent loss in the retardation beat frequency signals which are sensed (20) and then analysed (22) to determine the environmental parameter as a profile along the sensor fibre.

Abstract translation: 描述了分布式光纤传感器。 传感器使用具有低或零固有双折射的传感器光纤（10），其响应于诸如压力的环境参数（24）。 使用具有多种发射极化状态的探测光脉冲来减少延迟拍频信号中的信号衰减和偏振相关损耗，所述延迟拍频信号被感测（20）然后被分析（22），以将环境参数确定为沿着传感器光纤的轮廓 。

公开(公告)号：US20100254650A1

公开(公告)日：2010-10-07

申请号：US12676368

申请日：2008-09-04

Applicant: Frederick Henry Kreisler Rambow

Inventor： Frederick Henry Kreisler Rambow

IPC: G02B6/34

CPC classification number: G01K11/3206 ,  G01D5/35383 ,  G01L1/242 ,  G01L1/246 ,  G01L11/025

Abstract: A system and a method that are useful for making temperature measurements that are distributed over a distance. In one aspect, the system comprises a plurality of Bragg grating measurement points disposed in an optical fiber with a predetermined spacing between adjacent Bragg grating measurement points. The system also comprises a substrate with the optical fiber disposed thereon, the optical fiber wrapped around the substrate with at least one predetermined wrap angle. The predetermined wrap angle and the predetermined spacing may be selected to allow a temperature measurement signal to be distinguished from a bending measurement signal. The substrate may have a first coefficient of thermal expansion greater than a second coefficient of thermal expansion of the optical fiber and may comprise alternating sections of hollow tube and solid rod.

Abstract translation: 用于进行远距离分布的温度测量的系统和方法。 在一个方面，该系统包括多个布拉格光栅测量点，布置在相邻的布拉格光栅测量点之间具有预定间隔的光纤中。 该系统还包括其上设置有光纤的基板，光纤以至少一个预定的包角缠绕在基板周围。 可以选择预定的包角和预定间隔以允许将温度测量信号与弯曲测量信号区分开。 衬底可以具有大于光纤的第二热膨胀系数的第一热膨胀系数，并且可以包括中空管和实心棒的交替部分。

公开(公告)号：US20100036287A1

公开(公告)日：2010-02-11

申请号：US12329084

申请日：2008-12-05

Applicant: Michael Weber

Inventor： Michael Weber

IPC: A61B5/11 ,  G01N3/20 ,  G01N3/08 ,  G01V7/00

CPC classification number: A61B5/1116 ,  A61B5/4561 ,  A61B5/68 ,  A61B5/6823 ,  A61B5/6833 ,  A61B2562/0261 ,  A61B2562/043 ,  A61B2562/046 ,  A61B2562/08 ,  A61B2562/164 ,  G01L1/22 ,  G01L1/242 ,  G01N35/00871 ,  G01N2035/00782 ,  G01N2035/00841 ,  G01N2035/00851

Abstract: The invention relates to a bending sensor for detecting function parameters for the characterization of motion sequences at the human or animal body. The bending sensor comprises a fixing element 20, in particular a fixing plaster, for fixing the bending sensor on the skin of the human or animal body. Furthermore, a bending-sensitive detector 10 for detecting bending parameters of the bending sensor is provided. The detected bending parameters such as, for instance, the bending angle, the bending rate, and/or the bending acceleration are stored in a data memory 30. The fixing element is extensible and comprises an extensible cavity for accommodating a measuring sensor of the detector. The measuring sensor is fixed at a reference point of the fixing element in the cavity.

Abstract translation: 本发明涉及一种弯曲传感器，用于检测在人体或动物体上表征运动序列的功能参数。 弯曲传感器包括固定元件20，特别是固定石膏，用于将弯曲传感器固定在人或动物身体的皮肤上。 此外，提供了用于检测弯曲传感器的弯曲参数的弯曲敏感检测器10。 检测到的弯曲参数，例如弯曲角度，弯曲速率和/或弯曲加速度被存储在数据存储器30中。固定元件是可延展的，并且包括用于容纳检测器的测量传感器的可扩展腔 。 测量传感器固定在空腔中的固定元件的参考点上。

公开(公告)号：US07599047B2

公开(公告)日：2009-10-06

申请号：US11818966

申请日：2007-10-18

Applicant: Lufan Zou ,  Omur M. Sezerman

Inventor： Lufan Zou ,  Omur M. Sezerman

IPC: G01B11/16

CPC classification number: G01B11/18 ,  G01K11/32 ,  G01K2011/322 ,  G01L1/242

Abstract: A method and system for simultaneously measuring strain and temperature characteristics of an object involves the attachment to the object of a pair of optical fibers having different refractive indices, the fibers being connected together at least one end thereof, and directing laser light into at least one end of the fibers. The Brillouin frequency of each of the fibers is measure and the strain and temperature characteristics are calculated based on the coefficients of strain and temperature and the measured Brillouin frequencies of the fibers.

Abstract translation: 用于同时测量物体的应变和温度特性的方法和系统涉及附着到具有不同折射率的一对光纤的物体，纤维在其至少一端连接在一起，并将激光导入至少一个 纤维末端。 测量每个纤维的布里渊频率，并根据应变和温度系数以及纤维的测量布里渊频率计算应变和温度特性。

公开(公告)号：US07418171B2

公开(公告)日：2008-08-26

申请号：US10966317

申请日：2004-10-15

Applicant: Kenneth Thomas Victor Grattan ,  Tong Sun ,  Weizhong Zhao

Inventor： Kenneth Thomas Victor Grattan ,  Tong Sun ,  Weizhong Zhao

IPC: G02B6/34

CPC classification number: G01K11/3206 ,  G01L1/242

Abstract: A method and device for sensing spatial variations and/or temperature variations in the locality of a fiber optic cable 1 is disclosed, wherein a broadband light source 47 is used to shine incident light onto a series of fiber Bragg gratings contained within zones A, B and C. Each zone contains a plurality of fiber Bragg gratings, the plurality of fiber Bragg gratings in any one zone having a substantially identical grating period, and the fiber Bragg gratings in the respective zones having different grating periods. The reflected light from each fiber Bragg grating is returned back down the fiber optic cable 1 and redirected via a 2×1 coupler 51 to a wavelength detection system 53 and a personal computer 63. The combination of wavelength detection system 53 and personal computer 63 allow analysis of the reflected light patterns, as well as providing a user interface which enables detection of the occurrence of a spatial and/or a temperature variation. The location of the said variation along the fiber optic cable 1 is advantageously detectable in terms of the particular zone A, B or C in which the said variation has been sensed.

Abstract translation: 公开了一种用于感测光纤电缆1的位置的空间变化和/或温度变化的方法和装置，其中宽带光源47用于将入射光照射到包含在区域A，B内的一系列光纤布拉格光栅 每个区域包含多个光纤布拉格光栅，在任何一个区域中的多个光纤布拉格光栅具有基本上相同的光栅周期，并且各个区域中的光纤布拉格光栅具有不同的光栅周期。 来自每个光纤布拉格光栅的反射光从光纤电缆1返回并经由2×1耦合器51重定向到波长检测系统53和个人计算机63。 波长检测系统53和个人计算机63的组合允许对反射光图案的分析，以及提供能够检测空间和/或温度变化的发生的用户界面。 沿着光纤电缆1的所述变化的位置可以根据感测到所述变化的特定区域A，B或C进行检测。

公开(公告)号：US20080193126A1

公开(公告)日：2008-08-14

申请号：US12071059

申请日：2008-02-14

Applicant: Yoshinori Yamamoto

Inventor： Yoshinori Yamamoto

IPC: H04B10/08

CPC classification number: G01K11/32 ,  G01K2011/322 ,  G01K2203/00 ,  G01L1/242 ,  G01M11/088 ,  G01M11/319 ,  G01M11/39

Abstract: The present invention relates to a spectral measurement apparatus and measurement method utilizing Brillouin scattering, which judge the state of the temperature or strain of an optical fiber more quickly. The spectral measurement apparatus comprises a light source, an analysis section, and an anomaly judgment section. The light source outputs pumping light and probe light. The pumping light and probe light thus output are caused to enter in opposite directions to the sensing fiber. The analysis section analyzes the gain received by the probe light as a result of the Brillouin scattering. The anomaly judgment section judges the state relating to the temperature or strain of the sensing fiber on the basis of the analysis result of the analysis section. The frequency difference υ between the pumping light and probe light is set within a predetermined frequency difference setting range. The frequency difference setting range is a range which includes the frequency difference at which the peak value of the reference gain spectrum of the gain received by the probe light is obtained when the temperature or strain of the sensing fiber is in the reference state and is set at or below the line width of the reference gain spectrum

Abstract translation: 本发明涉及一种利用布里渊散射的光谱测量装置和测量方法，其更快地判断光纤的温度或应变状态。 光谱测量装置包括光源，分析部分和异常判断部分。 光源输出泵浦光和探测灯。 使得如此输出的泵浦光和探测光沿与传感光纤相反的方向进入。 分析部分分析了作为布里渊散射的结果的探测光所接收的增益。 异常判断部基于分析部的分析结果来判断与感测光纤的温度或应变有关的状态。 泵浦光和探测光之间的频率差上限被设定在预定的频率差设定范围内。 频率差设定范围是包括当感测光纤的温度或应变处于基准状态并被设置时获得由探测光接收到的增益的参考增益谱的峰值的频率差的范围 等于或低于参考增益谱的线宽

公开(公告)号：US07376292B2

公开(公告)日：2008-05-20

申请号：US11447007

申请日：2006-06-06

Applicant: Yasuyuki Hishida ,  Takahiro Saito ,  Shigenori Kobayashi ,  Motomi Iyoda ,  Yukio Nakagawa

Inventor： Yasuyuki Hishida ,  Takahiro Saito ,  Shigenori Kobayashi ,  Motomi Iyoda ,  Yukio Nakagawa

IPC: G02B6/02

CPC classification number: B60R21/0136 ,  B60R2021/01095 ,  G01L1/242

Abstract: An optical fiber sensor in which the insertion efficiency of a plastic fiber is improved, the potential danger of rupture of a mold member is decreased, the operation of the sensor in a low load area and the linearity of output of the sensor are improved. Plastic fiber for detection is inserted in insertion hole of molded member, and filler is filled in a gap between the plastic fiber for detection and the molded member.

Abstract translation: 提高了塑料纤维的插入效率的光纤传感器，降低了模具构件的破裂的潜在危险，提高了传感器在低负载区域的运行和传感器的输出的线性。 用于检测的塑料纤维插入模制件的插入孔中，填充剂填充在用于检测的塑料纤维和模制构件之间的间隙中。