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21. 发明授权

US06876188B2 Electro-optical voltage sensor for high voltages 有权
标题翻译：用于高电压的电光电压传感器
公开(公告)号：US06876188B2
公开(公告)日：2005-04-05
申请号：US10805517
申请日：2004-03-22
申请人： Klaus Bohnert , Andreas Frank , Hubert Brändle
发明人： Klaus Bohnert , Andreas Frank , Hubert Brändle
IPC分类号： G01R15/24 , G01R19/00 , G01R31/00
CPC分类号： G01R15/242 , G01R15/247 , G01R19/0084
摘要： The voltage sensor for measurement of a voltage V, which is present between two electrodes (3, 4) and generates an electric field E, comprises at least two layers (1a, 2a) made of electro-optically active material and being arranged along a light path (5). Through the layers there passes a light beam, the phase and/or state of polarization of which is influenced on account of the electro-optical effect. The orientation of the electro-optically active layers (1a, 2a) relative to the light path and the electric field E is chosen in such a way, that the influencing of the light (5) in the second layer (2a) counteracts the influencing of the light (5) in the first layer (1a). In this way, it is possible to realize a sensor with a high half wave voltage, so that high voltages V can be measured unambiguously. A plurality of first and second electro-optically active layers are advantageously arranged between the electrodes (3, 4).
摘要翻译：用于测量存在于两个电极（3,4）之间并产生电场E的电压V的电压传感器包括至少两层由电光活性材料制成的层（1a，2a），沿着光路（5）。通过这些层，通过光束，由于电光效应影响其相位和/或其极化状态。以这样的方式选择电光活性层（1a，2a）相对于光路和电场E的取向，使得第二层（2a）中的光（5）的影响抵消影响的第一层（1a）中的光（5）。以这种方式，可以实现具有高半波电压的传感器，从而可以明确地测量高电压V. 多个第一和第二电光活性层有利地布置在电极（3,4）之间。

22. 发明授权

US06636321B2 Fiber-optic current sensor 有权
标题翻译：光纤电流传感器
公开(公告)号：US06636321B2
公开(公告)日：2003-10-21
申请号：US09848210
申请日：2001-05-04
申请人： Klaus Bohnert
发明人： Klaus Bohnert
IPC分类号： G01B902
CPC分类号： G01R15/246
摘要： A fiber-optic current sensor has a reflection interferometer having a fiber-optic supply lead and a coil-shaped optical sensor fiber, the sensor fiber being connected with a first end to the fiber-optic supply lead, and being provided at a second, free end with a reflector. The fiber-optic supply lead has two fiber arms, which interconnect a detector-side and a sensor-side polarization-maintaining coupler. A phase modulator for modulating differential phases of two polarized waves propagating in the supply lead fiber is arranged in one of these two fiber arms, in which it modulates the differential phase of two waves polarized parallel to one another. Moreover, the sensor can change the direction of polarization in one of the two fiber arms, such that optical waves with orthogonally linear polarizations propagate in a segment of the supply lead fiber adjoining the sensor-side coupler. As a result, the advantages of the reflection interferometer can be combined with those of a Sagnac interferometer.
摘要翻译：光纤电流传感器具有反射干涉仪，其具有光纤供应引线和线圈形光学传感器光纤，该传感器光纤与第一端连接至光纤供应引线，自由端与反射器。光纤供应引线具有两个光纤臂，其将检测器侧和传感器侧偏振保持耦合器互连。用于调制在供应引线光纤中传播的两个偏振波的微分相位的相位调制器被布置在这两个光纤臂之一中，其中它调制彼此平行偏振的两个波的差分相位。此外，传感器可以改变两个光纤臂之一中的偏振方向，使得具有正交线性偏振的光波在邻近传感器侧耦合器的供电引线光纤的一段中传播。因此，反射干涉仪的优点可以与Sagnac干涉仪的优点相结合。

23. 发明授权

US06597821B1 Fiber laser sensor for measuring differential pressures and flow velocities 有权
标题翻译：用于测量压差和流速的光纤激光传感器
公开(公告)号：US06597821B1
公开(公告)日：2003-07-22
申请号：US09869120
申请日：2001-06-25
申请人： Klaus Bohnert , Hubert Brändle
发明人： Klaus Bohnert , Hubert Brändle
IPC分类号： G02B6100
CPC分类号： G01F1/44 , G01L1/246 , G01L11/025
摘要： The present invention relates to a fiber laser pressure sensor 1 which is suitable in particular for measuring differential pressures and flow velocities v1 in oil boreholes. The fiber laser 2 according to the invention comprises two sensor fiber segments 5a, 5b subjected to different pressure loading, in which segments a birefringence proportional to the differential pressure &Dgr;p=p1−p2, and consequently a beat frequency, is induced between the polarization modes or spatial modes in the fiber laser 2. Exemplary embodiments with polarimetric monomode fibers 5a, 5b and/or with elliptical two-mode fibers 5a, 5b are specified. Furthermore, pressure-resistant multichamber sensor housings 25 and wavelength division multiplex arrangements are disclosed for the fiber laser pressure sensor 1. One advantage is that the pressure signal is wavelength-coded and thus highly insensitive to interference. It can be read out directly fiber-optically over large distances between the passively optical sensor head 1 and the optoelectronic measuring device 12, 17. One application concerns the measurement of a flow velocity v1 with the aid of a Venturi tube 23.
摘要翻译：本发明涉及一种光纤激光压力传感器1，其特别适用于测量油井中的压差和流速。根据本发明的光纤激光器2包括经受不同压力负载的两个传感器光纤段5a，5b，其中在偏振模式之间感应出与压差DELTAp = p1-p2成比例的双折射以及因此的拍频或空间模式。具体说明了具有偏振单模光纤5a，5b和/或椭圆形双模光纤5a，5b的示例性实施例。此外，公开了用于光纤激光压力传感器1的耐压多室传感器壳体25和波分复用布置。一个优点是压力信号是波长编码的，因此对干扰非常不敏感。它可以在被动光学传感器头1和光电测量装置12,17之间的大距离上直接光纤读出。一个应用涉及借助于文氏管23测量流速v1。

24. 发明授权

US5343036A Optical measurement of electrical quantities using inverse piezoelectric effect with dual double-mode fiber 失效
标题翻译：使用双重双模光纤的反压电效应对电量的光学测量
公开(公告)号：US5343036A
公开(公告)日：1994-08-30
申请号：US44478
申请日：1993-04-09
申请人： Klaus Bohnert
发明人： Klaus Bohnert
IPC分类号： G01R15/24 , H01J5/16
CPC分类号： G01R15/24
摘要： In a fiber-optic sensor for measuring electric fields and voltages, in place of a double-mode fiber extending between sensor head (15) and evaluating unit (14) two separate, similar double-mode fibers (5a, 5b) are connected in series in the manner of a tandem interferometer. The first double-mode fiber (5a), serving as sensor fiber, is operated in reflection geometry. Together with the sensor element (6), it is disposed in the sensor head (15). The second double-mode fiber (5b), serving as reference fiber, is situated within the separate evaluating unit (14). Within the latter there is also provided at least one fiber coupler or beam splitter, which is required on account of the operation of the sensor fiber in reflection geometry. Sensor head (15) and evaluating unit (14) are connected by a single insensitive monomode fiber.
摘要翻译：在用于测量电场和电压的光纤传感器中，代替在传感器头（15）和评估单元（14）之间延伸的双模光纤，两个分开的相似的双模光纤（5a，5b）连接在串联干涉仪的方式。用作传感器光纤的第一双模光纤（5a）以反射几何形状操作。与传感器元件（6）一起设置在传感器头（15）中。用作参考光纤的第二双模光纤（5b）位于分离的评估单元（14）内。在后者中，还提供至少一个光纤耦合器或分束器，由于传感器光纤在反射几何形状中的操作而需要。传感器头（15）和评估单元（14）通过单个不敏感单模光纤连接。

25. 发明授权

US5339026A Fiber-optic sensor with first and second bimode fibers 失效
标题翻译：具有第一和第二双模光纤的光纤传感器
公开(公告)号：US5339026A
公开(公告)日：1994-08-16
申请号：US936799
申请日：1992-08-28
申请人： Klaus Bohnert
发明人： Klaus Bohnert
IPC分类号： G01R15/24 , G01R19/00 , G01R29/08
CPC分类号： G01R29/0885 , G01R15/248
摘要： In a fiber optic sensor for measuring electric fields and voltages, in place of a bimode fiber extending between sensor head (14) and evaluation unit (13) two separate bimode fibers (4a, 4b) of the same type are connected in series in the manner of a tandem interferometer. The first bimode fiber (4a) is disposed, together with the sensor element (6), in the sensor head (14). The second bimode fiber (4b) is situated within the separate evaluation unit (13). In this way, the sensor head (14) and the evaluation unit (13) are connected only by insensitive monomode fibers (2a, 2b).
摘要翻译：在用于测量电场和电压的光纤传感器中，代替在传感器头（14）和评估单元（13）之间延伸的双模光纤，两个相同类型的单独的双模光纤（4a，4b）串联连接串联干涉仪的方式。第一双模光纤（4a）与传感器元件（6）一起设置在传感头（14）中。第二双模光纤（4b）位于分离的评估单元（13）内。以这种方式，传感器头（14）和评估单元（13）仅由不敏感单模光纤（2a，2b）连接。

26. 发明授权

US5136236A Arrangement for voltage measurement in a GIS installation 失效
标题翻译： GIS安装中电压测量的安排
公开(公告)号：US5136236A
公开(公告)日：1992-08-04
申请号：US584715
申请日：1990-09-19
申请人： Klaus Bohnert , Hubert Brandle , Lutz Niemeyer , Roland Stierlin
发明人： Klaus Bohnert , Hubert Brandle , Lutz Niemeyer , Roland Stierlin
IPC分类号： G01R15/24 , G01R19/00
CPC分类号： G01R15/24 , H01H33/027
摘要： In a gas-insulated switchgear having an isolated-phase bus, a current-carrying bus (2) with a given external radius R.sub.1 is arranged coaxially in a cylindrical enclosure with a given external radius R.sub.2, the voltage of the current carrying bus is measured using optical fiber voltage transducers. For this purpose, at least three identical piezoelectric sensor elements are provided. They are arranged essentially at a distance corresponding to the internal radius R.sub.2 from an axis of the current carrying bus in the enclosure at identical angular distances. The sensor elements are preferably accommodated together with an optical fiber curent transducer in a metal ring that can be inserted into the enclosure.
摘要翻译：在具有隔离相母线的气体绝缘开关设备中，具有给定外径半径R1的载流母线（2）同轴地布置在具有给定外径半径R2的圆柱形外壳中，测量载流母线的电压使用光纤电压传感器。为此，提供至少三个相同的压电传感器元件。它们以相同的角距离基本上布置在与外壳中的载流母线的轴线对应的内部半径R2的距离处。传感器元件优选地与可插入外壳的金属环中的光纤固化传感器一起容纳在一起。

27. 发明授权

US08718418B2 High voltage AC/DC or DC/AC converter station with fiber-optic current sensor 有权
标题翻译：具有光纤电流传感器的高压AC / DC或DC / AC转换站
公开(公告)号：US08718418B2
公开(公告)日：2014-05-06
申请号：US13014969
申请日：2011-01-27
申请人： Juergen Haefner , Andreas Frank , Klaus Bohnert
发明人： Juergen Haefner , Andreas Frank , Klaus Bohnert
IPC分类号： G02B6/00
CPC分类号： H02B7/06 , G01R15/246 , H01B17/26 , H02B13/0356 , H02B13/0358
摘要： DC current in a high voltage AC/DC or DC/AC converter station can be measured via the Faraday effect in one or more loops of an optical sensing fiber located at the base of a bushing extending through a wall of the hall. This arrangement can exploit the base of the bushing being at ground potential, which can simplify mounting work and maintenance.
摘要翻译：高压AC / DC或DC / AC转换站中的直流电流可以通过法拉第效应在位于穿过大厅壁的衬套底部的光学感测纤维的一个或多个环路中测量。这种布置可以利用衬套的基部处于地电位，这可以简化安装工作和维护。

28. 发明授权

US08629672B2 Generator circuit breaker with fiber-optic current sensor 有权
标题翻译：具有光纤电流传感器的发电机断路器
公开(公告)号：US08629672B2
公开(公告)日：2014-01-14
申请号：US13016693
申请日：2011-01-28
申请人： Moritz Hochlehnert , Thomas Lorek , Ahmed Zekhnini , Andreas Frank , Klaus Bohnert
发明人： Moritz Hochlehnert , Thomas Lorek , Ahmed Zekhnini , Andreas Frank , Klaus Bohnert
IPC分类号： G01R31/00
CPC分类号： H01H33/027 , G01R15/246 , H01H33/002
摘要： The current in a generator circuit breaker is measured using the Faraday effect of an optical sensing fiber looped around the breaker's conductor. The sensing fiber is arranged in a sensing strip, which can be mounted to the enclosure of the generator circuit breaker or to the conductor. Exemplary embodiments can have a wide measuring range and can easily be fitted to new or existing generator circuit breakers.
摘要翻译：发电机断路器中的电流使用环绕断路器导体的光学感测光纤的法拉第效应来测量。感测光纤布置在感测条中，其可以安装到发电机断路器的外壳或导体上。示例性实施例可以具有宽的测量范围并且可以容易地安装到新的或现有的发电机断路器。

29. 发明授权

US08461822B2 Temperature compensated fiber optic current or magnetic field sensor with insensitivity to variations in sensor parameters 有权
标题翻译：温度补偿光纤电流或磁场传感器，对传感器参数的变化不敏感
公开(公告)号：US08461822B2
公开(公告)日：2013-06-11
申请号：US12889775
申请日：2010-09-24
申请人： Robert Wueest , Andreas Frank , Klaus Bohnert
发明人： Robert Wueest , Andreas Frank , Klaus Bohnert
IPC分类号： G01R31/00
CPC分类号： G01R15/246 , G01R33/0322
摘要： A fiber optic current or magnetic field sensor uses a sensing fiber in a coil for measuring a current or a magnetic field and has a retarder for converting between linearly polarized light and elliptically polarized light. The retardation of the retarder, its temperature dependence as well as its azimuth angle in respect to the plane of the fiber coil are optimized in dependence of the birefringence in the sensing fiber in order to minimize the influence of temperature variations and manufacturing tolerances on the overall scale factor of the sensor.
摘要翻译：光纤电流或磁场传感器使用线圈中的感测光纤来测量电流或磁场，并且具有用于在线偏振光和椭圆偏振光之间转换的延迟器。延迟器的延迟，其温度依赖性以及相对于纤维线圈的平面的方位角根据感测光纤中的双折射进行优化，以便最小化温度变化和制造公差对整体的影响传感器的比例因子。

30. 发明授权

US08233754B2 Optical high voltage sensor 有权
标题翻译：光电高压传感器
公开(公告)号：US08233754B2
公开(公告)日：2012-07-31
申请号：US12488779
申请日：2009-06-22
申请人： Klaus Bohnert , Andreas Frank , Hubert Brändle
发明人： Klaus Bohnert , Andreas Frank , Hubert Brändle
IPC分类号： G02B6/00 , G02B6/02
CPC分类号： G01R15/242 , G01R15/247
摘要： An electro-optical high-voltage sensor includes a waveguiding sensing fiber of an electro-optical material. The electrical field of the voltage to be measured is substantially parallel to the longitudinal axis of the sensing fiber. The sensing fiber carries two orthogonally polarized light waves, with the applied field affecting the birefringence between the waves. Using an electro-optical waveguiding fiber in this configuration allows the voltage between two widely spaced points to be accurately measured.
摘要翻译：电光高压传感器包括电光材料的波导感测光纤。要测量的电压的电场基本上平行于感测光纤的纵向轴线。感测光纤承载两个正交偏振光波，其中施加的场影响波之间的双折射。在这种结构中使用电光波导纤维可以精确地测量两个广泛间隔的点之间的电压。

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