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1. 发明申请

US20090290165A1 OPTICAL HIGH VOLTAGE SENSOR 有权
标题翻译：光电高压传感器
公开(公告)号：US20090290165A1
公开(公告)日：2009-11-26
申请号：US12488779
申请日：2009-06-22
申请人： Klaus Bohnert , Andreas Frank , Hubert Brandle
发明人： Klaus Bohnert , Andreas Frank , Hubert Brandle
IPC分类号： G01B9/02 , C03B37/023 , G01N23/00
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。

2. 发明申请

US20090039866A1 Fiber-Optic Current Sensor With Polarimetric Detection Scheme 有权
标题翻译：具有偏振检测方案的光纤电流传感器
公开(公告)号：US20090039866A1
公开(公告)日：2009-02-12
申请号：US12256289
申请日：2008-10-22
申请人： Klaus Bohnert , Andreas Frank , Hubert Brandle
发明人： Klaus Bohnert , Andreas Frank , Hubert Brandle
IPC分类号： G01R13/40
CPC分类号： G01R15/246
摘要： The current in a conductor is measured by exploiting the Faraday effect in a sensing fiber. The light returning from the sensing fiber is split into at least two parts, at least one of which is analyzed by a first circular analyzer for generating a first signal. A second part may e.g. be analyzed by a second circular analyzer, and a third part may be analyzed by a linear analyzer. By combining the signals obtained in this way, the current induced phase delay in the returning light can be measured efficiently and accurately.
摘要翻译：导体中的电流通过利用传感光纤中的法拉第效应来测量。从感测光纤返回的光被分成至少两个部分，其中至少一个由第一圆形分析器分析，用于产生第一信号。第二部分可以例如。由第二个圆形分析仪分析，第三个部分可以用线性分析仪进行分析。通过组合以这种方式获得的信号，可以有效和准确地测量返回光中的电流感应相位延迟。

3. 发明授权

US07692420B2 Fiber-optic current sensor with polarimetric detection scheme 有权
标题翻译：具有偏振检测方案的光纤电流传感器
公开(公告)号：US07692420B2
公开(公告)日：2010-04-06
申请号：US12256289
申请日：2008-10-22
申请人： Klaus Bohnert , Andreas Frank , Hubert Brandle
发明人： Klaus Bohnert , Andreas Frank , Hubert Brandle
IPC分类号： G01R31/00
CPC分类号： G01R15/246
摘要： The current in a conductor is measured by exploiting the Faraday effect in a sensing fiber. The light returning from the sensing fiber is split into at least two parts, at least one of which is analyzed by a first circular analyzer for generating a first signal. A second part may e.g. be analyzed by a second circular analyzer, and a third part may be analyzed by a linear analyzer. By combining the signals obtained in this way, the current induced phase delay in the returning light can be measured efficiently and accurately.
摘要翻译：导体中的电流通过利用传感光纤中的法拉第效应来测量。从感测光纤返回的光被分成至少两个部分，其中至少一个由第一圆形分析器分析，用于产生第一信号。第二部分可以例如。由第二个圆形分析仪分析，第三个部分可以用线性分析仪进行分析。通过组合以这种方式获得的信号，可以有效和精确地测量返回光中的电流感应相位延迟。

4. 发明申请

US20060013534A1 High-resolution fiber laser sensor 有权
公开(公告)号：US20060013534A1
公开(公告)日：2006-01-19
申请号：US10512574
申请日：2003-04-29
申请人： Klaus Bohnert , Karim Haroud , Andreas Frank , Hubert Brandle
发明人： Klaus Bohnert , Karim Haroud , Andreas Frank , Hubert Brandle
IPC分类号： G02B6/34
CPC分类号： H01S3/0675 , G01D5/344 , G01L1/246 , G01L9/0079 , G01L11/025 , H01S3/06712 , H01S3/08031 , H01S3/1053
摘要： A high-resolution fiber laser sensor for measuring a quantity to be measured M has a pumping light source (2), a fiber laser (1) and a detection/evaluating unit (3). The fiber laser (1) has: a birefringent first end reflector (11), a second end reflector (12), a laser-amplifying fiber (13), a sensor fiber (14) and a means for mode coupling (15). The laser-amplifying fiber (13), the sensor fiber (14) and the means for mode coupling (15) are arranged between the end reflectors (11, 12). In the fiber laser (1), light is capable of propagating in two optical states (x, y; LP′01, LP′11) which are orthogonal to one another due to their polarization and/or their transversal space structure. The orthogonal optical states (x, y; LP′01, LP′11) can be coupled to one another by the means for mode coupling (15). In the fiber laser (1), a number of longitudinal modes (LMxp, LMxp+1 . . . , LMyq, LMyq+1 . . . ; LM01p, LM01p+1 . . . , LM11q, LM11q+1 . . . ) are capable of oscillating in each of the two optical states (x, y; LP′01, LP′11). In the sensor fiber (14) a change in the birefringence for the two orthogonal optical states (x, y; LP′01, LP′11) can be achieved by interaction of the quantity to be measured (M) with the sensor fiber (14). The change in the birefringence results in a change in the beat frequencies in the laser emission. Due to the fact that the first end reflector (11) is detuned with respect to the second end reflector (12), it is possible to detect individual polarization mode beat signals instead of one beat signal which consists of a number of degenerated PMB signals and is, therefore, broadened. A high sensor resolution is achieved.

5. 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。

6. 发明申请

US20110128655A1 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：US20110128655A1
公开(公告)日：2011-06-02
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： H02H7/06
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。

7. 发明授权

US06885182B2 Temperature-compensated electro-optical voltage sensor 有权
标题翻译：温度补偿电光电压传感器
公开(公告)号：US06885182B2
公开(公告)日：2005-04-26
申请号：US10804160
申请日：2004-03-19
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
CPC分类号： G01R15/242
摘要： The electra-optical voltage sensor has an electra-optically active medium and a distance medium between two electrodes, between which the voltage V to be measured is present. The media and the thicknesses d1, d2 of the media are chosen in such a way that the measured voltage signal has no temperature dependence. By way of example, the thicknesses d1, d2 are chosen in such a way that the influence of the temperature dependences of critical electra-optical coefficients and dielectric constants of the media on the voltage signal cancel one another out. The two media are advantageously arranged in the form of a rod, comprising an alternating arrangement of cylindrical elements of the two media, between the electrodes. BGO and fused silica may advantageously be used as media. The sensor is preferably cast in silicone. It is possible to realize a mechanically stable, temperature-stabilized voltage sensor with low reflection losses, a large half wave voltage and a small sensitivity toward disturbances of the electric field.
摘要翻译：电光学电压传感器具有电光活性介质和两个电极之间的距离介质，在两个电极之间存在要测量的电压V. 介质和介质的厚度d 1，D 2，N 2被选择为使得所测量的电压信号没有温度依赖性。作为示例，选择厚度d 1，d 2 2，使得对临界电光学系数和介电常数的温度依赖性的影响介质上的电压信号相互抵消。两个介质有利地以杆的形式布置，包括两个介质的圆柱形元件在电极之间的交替布置。 BGO和熔融石英可有利地用作介质。该传感器优选用硅树脂铸造。可以实现具有低反射损耗，大的半波电压和对电场干扰的小灵敏度的机械稳定的温度稳定的电压传感器。

8. 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。

9. 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。

10. 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。

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