公开(公告)号：US08773119B2

公开(公告)日：2014-07-08

申请号：US13519967

申请日：2010-11-22

申请人： Haijun Yuan

发明人： Haijun Yuan

IPC分类号： G01R33/02 ,  G01R33/032 ,  G01R15/24 ,  G01R31/00 ,  G01R19/00 ,  G02F1/09 ,  H01P1/175

CPC分类号： G01R33/032 ,  G01R15/24 ,  G01R15/245 ,  G01R15/246 ,  G01R19/00 ,  G01R33/0322 ,  G02F1/09 ,  H01P1/175

摘要： A system for fiber DC magneto-optic detection and method thereof are provided. The system comprises a power supply and signal processing module (400), an optical fiber device (200), a magneto-optic probe (100) and a reference device (300). The reference device (300) is mounted in the system, and the measured signal can be corrected via a reference magnetic field pulse signal generated by the reference device (300) so as to eliminate the influence that the environmental factors caused on the measurement, and to obtain accurate measurement data, thus improving measurement accuracy of the system.

摘要翻译： 提供了一种用于光纤直流磁光检测的系统及其方法。 该系统包括电源和信号处理模块（400），光纤设备（200），磁光探针（100）和参考设备（300）。 参考装置（300）安装在系统中，并且可以经由参考装置（300）生成的参考磁场脉冲信号来校正测量信号，以消除对测量造成的环境因素的影响，以及 以获得准确的测量数据，从而提高系统的测量精度。

公开(公告)号：US08542366B2

公开(公告)日：2013-09-24

申请号：US12918273

申请日：2009-02-20

申请人： John Haywood

发明人： John Haywood

IPC分类号： G01B9/02

CPC分类号： G01R15/245

摘要： A sensing coil for a Sagnac interferometer current sensor is disclosed, the sensing coil (14) being composed of an optical fiber (for example a spun polarizing Hi-Bi fiber) that is arranged in use to transmit a single elliptical polarization state and the sensing coil comprising at least two interconnected loops (15 and 16 or 26 and 27 or 28 and 29). At least one of the loops is arranged in use to enclose a current conductor (11, 12 or 25) and the loops are interconnected such that light propagating in a first direction (23 or 30) in the first loop will propagate in a second, opposite, direction (24 or 31) in the other or, if more than one, in each other loop, whereby the sensing coil provides minimal sensitivity to rotational movement. Also disclosed are a sensing unit (FIG. 5) that incorporates the sensing coil and a current sensor (FIG. 1) that incorporates the sensing unit.

摘要翻译： 公开了一种用于Sagnac干涉仪电流传感器的感测线圈，感测线圈（14）由在传输单个椭圆偏振状态的传输中使用的光纤（例如旋转偏振Hi-Bi光纤）组成， 线圈包括至少两个互连的环（15和16或26和27或28和29）。 至少一个环路被布置为用于封闭电流导体（11,12或25），并且环路互连，使得在第一环路中沿第一方向（23或30）传播的光将在第二环路中传播， 相反的方向（24或31），或者如果多于一个，则在每个其它循环中，由此感测线圈对旋转运动提供最小的灵敏度。 还公开了包含感测线圈的感测单元（图5）和包含感测单元的电流传感器（图1）。

公开(公告)号：US20120091991A1

公开(公告)日：2012-04-19

申请号：US13321396

申请日：2010-05-18

申请人： Yoshihiro Konno ,  Masaru Sasaki

发明人： Yoshihiro Konno ,  Masaru Sasaki

IPC分类号： G01R19/00

CPC分类号： G01R15/246 ,  G01R15/245 ,  G01R19/32

摘要： An electric measuring apparatus is constructed in such a way as to include a signal processing circuit equipped with at least a polarized light separating unit, Faraday rotators, a light source, a photoelectric conversion element, and optical fibers for a sensor. The optical fibers for the sensor are placed around the periphery of an electrical conductor through which electric current to be measured flows. Furthermore, the rotation angle of each Faraday rotator at the time when the magnetism of each Faraday rotator is saturated is set to 22.5°+α° at a temperature of 23° C., thereby changing the rotation angle of each Faraday rotator by α° from 22.5°.

摘要翻译： 电测量装置的构成包括：至少配备有偏振光分离单元，法拉第旋转器，光源，光电转换元件和用于传感器的光纤的信号处理电路。 用于传感器的光纤被放置在要测量的电流流过的电导体的周围。 此外，每个法拉第旋转器的磁性饱和时的每个法拉第旋转器的旋转角度在23℃的温度下设定为22.5°+α°，从而将每个法拉第旋转器的旋转角度改变α° 从22.5°。

公开(公告)号：US20060126990A1

公开(公告)日：2006-06-15

申请号：US11010530

申请日：2004-12-13

申请人： Kung-Li Deng ,  Glenn Forman

发明人： Kung-Li Deng ,  Glenn Forman

IPC分类号： G02B6/26

CPC分类号： G01R33/032 ,  G01R15/245

摘要： A system for estimating a parameter selected from the group consisting of a current, a magnetic field, or combinations thereof comprises a resonant frequency tunable magneto-optical loop resonator, wherein the loop resonator comprises a magneto-optical sensing element coupled to an optical waveguide, and wherein the loop resonator is configured for receiving an originating optical signal from a broadband light source and providing a modulated signal indicative of the estimated parameter.

摘要翻译： 用于估计从由电流，磁场或其组合组成的组中选择的参数的系统包括谐振频率可调谐磁光环路谐振器，其中环路谐振器包括耦合到光波导的磁光感测元件， 并且其中所述环路谐振器被配置为从宽带光源接收始发光信号并且提供指示所述估计参数的调制信号。

公开(公告)号：US06534977B1

公开(公告)日：2003-03-18

申请号：US09421399

申请日：1999-10-21

申请人： Paul Duncan ,  Carvel E. Holton ,  Richard O. Claus

发明人： Paul Duncan ,  Carvel E. Holton ,  Richard O. Claus

IPC分类号： G01R3302

CPC分类号： G01R33/0322 ,  G01R15/245 ,  G01R15/246 ,  G02B6/42 ,  G02B6/4207 ,  G02B6/4214 ,  G02B6/4216

摘要： Described are the design of a rare earth iron garnet sensor element, optical methods of interrogating the sensor element, methods of coupling the optical sensor element to a waveguide, and an optical and electrical processing system for monitoring the polarization rotation of a linearly polarized wavefront undergoing external modulation due to magnetic field or electrical current fluctuation. The sensor element uses the Faraday effect, an intrinsic property of certain rare-earth iron garnet materials, to rotate the polarization state of light in the presence of a magnetic field. The sensor element may be coated with a thin-film mirror to effectively double the optical path length, providing twice the sensitivity for a given field strength or temperature change. A semiconductor sensor system using a rare earth iron garnet sensor element is described.

摘要翻译： 描述了稀土铁石榴石传感器元件的设计，询问传感器元件的光学方法，将光学传感器元件耦合到波导的方法以及用于监测正在经历的线性偏振波前的偏振旋转的光学和电子处理系统 由于磁场或电流波动引起的外部调制。 传感器元件使用法拉第效应，即某些稀土类铁石榴石材料的固有特性，以便在存在磁场的情况下旋转光的偏振状态。 传感器元件可以涂覆有薄膜反射镜，以有效地加倍光路长度，为给定的场强或温度变化提供两倍的灵敏度。 描述了使用稀土铁石榴石传感器元件的半导体传感器系统。

公开(公告)号：US06437885B1

公开(公告)日：2002-08-20

申请号：US09583901

申请日：2000-06-01

申请人： Paul G. Duncan

发明人： Paul G. Duncan

IPC分类号： G02F109

CPC分类号： G01R33/0322 ,  G01R15/245 ,  G01R15/246 ,  G02B6/42 ,  G02B6/4207 ,  G02B6/4214 ,  G02B6/4216

摘要： Described are the design of a rare earth iron garnet sensor element, optical methods of interrogating the sensor element, methods of coupling the optical sensor element to a waveguide, and an optical and electrical processing system for monitoring the polarization rotation of a linearly polarized wavefront undergoing external modulation due to magnetic field or electrical current fluctuation. The sensor element uses the Faraday effect, an intrinsic property of certain rare-earth iron garnet materials, to rotate the polarization state of light in the presence of a magnetic field. The sensor element may be coated with a thin-film mirror to effectively double the optical path length, providing twice the sensitivity for a given field strength or temperature change. A semiconductor sensor system using a rare earth iron garnet sensor element is described.

摘要翻译： 描述了稀土铁石榴石传感器元件的设计，询问传感器元件的光学方法，将光学传感器元件耦合到波导的方法以及用于监测正在经历的线性偏振波前的偏振旋转的光学和电子处理系统 由于磁场或电流波动引起的外部调制。 传感器元件使用法拉第效应，即某些稀土类铁石榴石材料的固有特性，以便在存在磁场的情况下旋转光的偏振状态。 传感器元件可以涂覆有薄膜反射镜，以有效地加倍光路长度，为给定的场强或温度变化提供两倍的灵敏度。 描述了使用稀土铁石榴石传感器元件的半导体传感器系统。

公开(公告)号：US5210800A

公开(公告)日：1993-05-11

申请号：US852646

申请日：1992-03-17

申请人： Yuji Asai ,  Masanobu Yamamoto

发明人： Yuji Asai ,  Masanobu Yamamoto

IPC分类号： G01J1/04 ,  G01R1/07 ,  G01R15/24 ,  G01R19/00 ,  G01R33/032 ,  G02B6/26 ,  G02B6/28 ,  G02B6/36 ,  G02F1/00

CPC分类号： G02B6/2817 ,  G01R1/071 ,  G01R15/245 ,  G01R33/0322 ,  G02B6/264 ,  G02B6/3624 ,  G02B6/3636 ,  Y10S359/90

摘要： An optical sensor including a plurality of optical elements such as lenses, a polarizer, and analyzer, optical fibers, and a Pockels element or Faraday element. Light from a light source is transmitted through the optical elements of the optical sensor to optically measure applied voltage or an electric field acting upon the Pockels Faraday element on the basis modulation of the light received by a light receiver. The optical sensor includes a first synthetic resin interposed between adjacent optical elements in close contact with the optical elements without gaps, and a second synthetic resin of the same material as the first synthetic resin filled around the optical elements. The optical elements may be bonded to a base plate for adjusting optical axes of the optical elements, and the second synthetic resin may be filled around the optical elements and the base plate.

公开(公告)号：US20170160315A1

公开(公告)日：2017-06-08

申请号：US15434747

申请日：2017-02-16

申请人： ABB Schweiz AG

发明人： Georg Müller ,  Klaus Bohnert ,  Andreas Frank ,  Lin Yang

IPC分类号： G01R15/24

CPC分类号： G01R15/245 ,  G01R15/246

摘要： There is described an optical fiber cuing sensor having an opto-electronic module pan (10-2) for detecting an optical phase shift induced by the measurand field in a sensing fiber (12), a sensor head (10-1) including the sensing fiber (12), wherein the sensing fiber (12) is a spun highly-birefringent fiber having a length L=∫ds defined by the line integral along the space curve given by the sensing fiber coil such that the length L of the sensing fiber (12) is sufficiently long to suppress thermal signal instabilities due to the spun character of the sensing fiber (12) while the effective number of fiber windings is low enough to maintain a maximum sensitivity over the full measurement range of the fiber-optical sensor (10).

公开(公告)号：US08242402B2

公开(公告)日：2012-08-14

申请号：US12819809

申请日：2010-06-21

申请人： Klaus Bohnert ,  Hubert Braendle

发明人： Klaus Bohnert ,  Hubert Braendle

IPC分类号： H01H33/00

CPC分类号： G01R15/247 ,  G01R15/242 ,  G01R15/245 ,  H02G5/066

摘要： An exemplary gas-insulated switchgear device is disclosed which includes a current sensor and a voltage sensor located at a partition insulator. The current sensor can include a magneto-optical fiber on a flexible carrier strip and can be manufactured separately for being easily mounted to an assembled switchgear device. The current sensor can include an electro-optical fiber extending radially into the partition insulator and whose ends are embedded in recesses in the bus bar as well as in the metal embracing of the partition insulator for accurately integrating the voltage.

摘要翻译： 公开了一种示例性的气体绝缘开关装置，其包括位于分隔绝缘体处的电流传感器和电压传感器。 电流传感器可以在柔性载体带上包括磁光纤，并且可以单独制造以容易地安装到组装的开关装置上。 电流传感器可以包括径向延伸到分隔绝缘体中的电光纤，并且其端部嵌入在母线槽中的凹槽中以及用于精确地积分电压的分隔绝缘体的金属包围中。

公开(公告)号：US20120098560A1

公开(公告)日：2012-04-26

申请号：US13382503

申请日：2010-05-18

申请人： Mizuki Iwanami ,  Hiroshi Fukuda ,  Risato Ohhira

发明人： Mizuki Iwanami ,  Hiroshi Fukuda ,  Risato Ohhira

IPC分类号： G01R31/302 ,  G01R29/08

CPC分类号： G01R31/311 ,  G01R15/245

摘要： An electromagnetic field measuring apparatus capable of measuring an electromagnetic field for a minuscule area in which electronic devices are densely packed with a high sensitivity is provided. In an electromagnetic field measuring apparatus according to the present invention, the amplitude level of signal light (pf) is adjusted by the analyzer (34) by adjusting its angle with respect to the plane of polarization of the signal light (pf) based on an amplitude level control signal (eb) supplied from the calculation control unit (40). An amplitude level control signal (eb) is supplied from the calculation control unit (40) to the analyzer (34) based on the spectrum (ea) of an electric signal (ed) measured by an RF spectrum analyzer (39). The amplitude level ration between the carrier and the sideband contained in the signal light (ph) incident on the optical receiver (38) is controlled to a fixed value.

摘要翻译： 提供一种电磁场测量装置，其能够测量电子装置以高灵敏度密集包装的微小区域的电磁场。 在根据本发明的电磁场测量装置中，信号光的振幅电平（pf）由分析器（34）通过相对于信号光的偏振面（pf）的角度调节，基于 从计算控制单元（40）提供的振幅电平控制信号（eb）。 基于由RF频谱分析器（39）测量的电信号（ed）的频谱（ea），将幅度电平控制信号（eb）从计算控制单元（40）提供给分析器（34）。 入射在光接收器（38）上的信号光（ph）中包含的载波和边带之间的幅度电平比率被控制为固定值。