公开(公告)号：US5953121A

公开(公告)日：1999-09-14

申请号：US986191

申请日：1997-12-05

申请人： Klaus Bohnert ,  Hubert Brandle ,  Tone Schanke

发明人： Klaus Bohnert ,  Hubert Brandle ,  Tone Schanke

IPC分类号： G01R15/24 ,  G01B9/02

CPC分类号： G01R15/246

摘要： Without special measures, a fiber-optic current sensor coil (11) and fiber-optic .lambda./4 time delay elements (9, 9'), which are connected in series with the current sensor coil (11), are temperature-dependent with respect to a relative phase lag of light passing through. In order to avoid a temperature correction or temperature compensation, the current sensor coils (11) and, if appropriate, also the .lambda./4 time delay elements (9, 9') are annealed, so that virtually no mechanical stresses remain in the optical fibers. The current sensor coil (11) is preferably mounted unrestrained in a capillary (20) filled with a protective gas. The capillary (20) is embedded in a gastight fashion in a potting compound (22) made from polyurethane, and is thus also mechanically protected.

摘要翻译： 没有特殊措施，与电流传感器线圈（11）串联连接的光纤电流传感器线圈（11）和光纤λ/ 4时间延迟元件（9,9'）与温度有关 尊重光通过的相对相位滞后。 为了避免温度校正或温度补偿，电流传感器线圈（11）和（如果适用的话）λ/ 4时间延迟元件（9,9'）也被退火，使得实际上没有机械应力残留在光学 纤维。 电流传感器线圈（11）优选地安装在填充有保护气体的毛细管（20）中。 毛细管（20）以气密的方式嵌入由聚氨酯制成的灌封化合物（22）中，因此也被机械地保护。

公开(公告)号：US08973979B2

公开(公告)日：2015-03-10

申请号：US12276680

申请日：2008-11-24

申请人： Ali Oezkan ,  Klaus Bohnert ,  Gernot Jenisch

发明人： Ali Oezkan ,  Klaus Bohnert ,  Gernot Jenisch

IPC分类号： B62D25/20 ,  B62D25/02

CPC分类号： B62D25/20 ,  B62D25/025 ,  B62D25/2036

摘要： A motor vehicle bodywork has a floor assembly with an upwardly convex and downwardly open longitudinal center tunnel and two side sills parallel thereto. Floor elements are disposed between the longitudinal center tunnel and the side sills. A driver side and a passenger side are each provided with at least one front and one rear seat crossmember, seen in the direction of travel. The seat cross-members extend in the transverse direction of the vehicle and rest on the associated floor elements. It is important that the driver side and/or passenger side seat cross-members are each connected to each other in their upper regions via a plate-like thrust element.

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：US06930475B2

公开(公告)日：2005-08-16

申请号：US10467305

申请日：2002-02-05

申请人： Michael Stanimirov ,  Klaus Bohnert

发明人： Michael Stanimirov ,  Klaus Bohnert

IPC分类号： G01R15/24 ,  G01R19/32 ,  G02F1/03 ,  G01R31/00

CPC分类号： G01R15/247 ,  G01R15/241

摘要： For measuring an electric voltage in an electro-optic voltage converter, polarized light of two wavelengths is sent through a medium. At the output side, the light is led through a polarizer and the remaining signal is measured. For compensating a temperature dependence of the electro-optic coefficients, the measured results at both wavelengths are compared, and the voltage value consistant with both measurements is used.

摘要翻译： 为了测量电光电压转换器中的电压，两个波长的偏振光通过介质发送。 在输出侧，将光通过偏振器引导，并测量剩余信号。 为了补偿电光系数的温度依赖性，比较了在两个波长处的测量结果，并且使用与两个测量值一致的电压值。

公开(公告)号：US06740866B1

公开(公告)日：2004-05-25

申请号：US09868188

申请日：2001-06-15

申请人： Klaus Bohnert ,  Hubert Brändle

发明人： Klaus Bohnert ,  Hubert Brändle

IPC分类号： G01J508

CPC分类号： G01L11/025

摘要： The subject matter of the present invention is a fiber Bragg grating sensor 1, 25 which is suitable, in particular, for measuring differential pressures and flow rates v1 in oil drill holes. The sensor principle according to the invention is based on using a transducer 1 with two pressure chambers 7a, 7b to convert a hydrostatic pressure difference between two liquid or gaseous media 11a, 11b into a longitudinal fiber elongation or fiber compression and measuring it via the displacement of the Bragg wavelength &Dgr;&lgr;B of at least one fiber Bragg grating 3, 4. Exemplary embodiments are specified which have two fiber Bragg gratings 3, 4 which are sensitive to elongation in opposite senses and which have temperature-compensating transducers 1, and which have a plurality of transducers 1 in a wavelength-division-multiplexing configuration. One embodiment relates to measuring a flow rate v1 with the aid of a venturi tube 23.

摘要翻译： 本发明的主题是一种光纤布拉格光栅传感器，其特别适用于测量油钻孔中的压差和流量v1。 根据本发明的传感器原理基于使用具有两个压力室7a，7b的换能器1将两个液体或气体介质11a，11b之间的静水压力差转换成纵向纤维伸长或纤维压缩，并通过位移 具有至少一个光纤布拉格光栅3,4的布拉格波长偏差λB的示例性实施例。具有两个光纤布拉格光栅3,4的示例性实施例，这两个光纤布拉格光栅3,4对相反感觉的伸长敏感并且具有温度补偿换能器1，并且具有 多个换能器1以波分复用配置。 一个实施例涉及借助文丘里管23测量流量v1。

公开(公告)号：US06630658B1

公开(公告)日：2003-10-07

申请号：US09623048

申请日：2000-11-20

申请人： Klaus Bohnert ,  Hubert Brandle

发明人： Klaus Bohnert ,  Hubert Brandle

IPC分类号： G01J104

CPC分类号： G02B6/022 ,  G01D5/35316 ,  G01D5/3538 ,  G01L11/025 ,  G02B6/02085 ,  G02B6/105

摘要： The invention relates to a frequency-coded fiber laser pressure sensor (1) which is especially suitable for measuring isotropic pressures in oil wells. The sensor principle provided for in the invention is based on the fact that in a fiber laser (2) doped with Er3+ a monomode or bimodal sensor fiber (5, 5a, 5b) is positioned whose pressure-related birefraction results in a frequency shift and beat frequencies between the orthogonal linear polarisation modes x, y or the spatial modes LP01 and LP11straight line. The beat frequencies are easily measured using a frequency counter (19). Temperature-related variations in birefraction are compensated in a differential arrangement of two sensor fiber segments (5a, 5b). Fiber-integrated Bragg gratings (4a, 4b) with low bandwidths (0.2 nm) are especially suitable as laser end reflectors. The pressure sensor (1) is characterized by a large measurement range (100 Mpa) and a high triggering capacity , (kPa), is readily multiplexed and can be housed in a very compact, light-weight and robust pressure-resistant housing (25).

摘要翻译： 本发明涉及一种频率编码的光纤激光压力传感器（1），其特别适合于测量油井中的各向同性压力。 在本发明中提供的传感器原理基于以下事实：在掺杂有Er 3+的单模或双峰传感器光纤（5,5a，5b）的光纤激光器（2）中定位其压力相关双折射结果 正交线性偏振模x，y或空间模式LP01和LP11 <直线之间的频移和拍频。 使用频率计数器（19）容易地测量拍频。 温度相关的双折射变化在两个传感器光纤段（5a，5b）的差分布置中被补偿。 具有低带宽（0.2nm）的光纤集成布拉格光栅（4a，4b）特别适用于激光端反射器。 压力传感器（1）的特征在于测量范围大（100Mpa）和高触发能力（kPa）容易复用，并且可以容纳在非常紧凑，重量轻且耐用的耐压外壳（25 ）。

公开(公告)号：US5715058A

公开(公告)日：1998-02-03

申请号：US781749

申请日：1997-01-10

申请人： Klaus Bohnert ,  Jurgen Nehring

发明人： Klaus Bohnert ,  Jurgen Nehring

IPC分类号： G01D5/26 ,  G01J4/00 ,  G01M11/00 ,  G01N21/23 ,  G01R15/24

CPC分类号： G01R15/242

摘要： In order to detect, in particular, a high electric voltage (8), use is made of an electrooptic sensor with an electrooptic crystal (4) such as is applied in Pockels cells. Light is irradiated into the electrooptic crystal (4) in a linearly polarized fashion from a light source (L) via a fiber coupler (FK), a fiber-optic cable (F1), a collimator (K1), a 1st polarizer (P1), a beam splitter (1), and 1st and 2nd glass plates (2, 3). Located at the end face of said crystal is a 3rd glass plate (5) having a layer electrode (6) which simultaneously acts as a mirror (7) and retroreflects the incident light through the electrooptic crystal (4). One component beam (T1) of the reflected light passes back to a 1st light detector (D1) via the beam splitter (1) and the 1st polarizer (P1), now acting as an analyzer. A 2nd component beam (T2) passes to a 2nd light detector (D2) via a .lambda./4-delay plate (9), a 2nd polarizer (P2), a 90.degree. prism (10), a collimator (K2) and a 2nd fiber-optic cable (F2). Light intensities (I.sub.1) and (I.sub.2) are evaluated by means of a microprocessor (14). Owing to the fact that the two phase-shifted light signals are derived from a common optical channel, an intrinsic birefringence of the electrooptic crystal (4) does not affect their phase difference. A 9.degree. prism can be used instead of a mirror (7) for reversing the light. Input and output channels of the light can be separate. Ways are specified for the temperature compensation of a measurement result signal (S).

摘要翻译： 为了特别地检测高电压（8），使用具有电光晶体（4）的电光传感器，例如在普克尔斯细胞中应用。 光从光源（L）经由​​光纤耦合器（FK），光纤电缆（F1），准直器（K1），第一偏振器（P1）以线偏振的方式照射到电光晶体 ），分束器（1）和第一和第二玻璃板（2,3）。 位于所述晶体的端面处的是具有同时用作反射镜（7）并且通过电光晶体（4）反射入射光的层电极（6）的第三玻璃板（5）。 反射光的一个分量束（T1）经由分束器（1）和第一偏振器（P1）返回到第一光检测器（D1），现在用作分析器。 第二分量光束（T2）通过λ/ 4延迟板（9），第二偏振器（P2），90°棱镜（10），准直仪（K2）和 第二根光纤电缆（F2）。 光强度（I1）和（I2）通过微处理器（14）进行评估。 由于两个相移光信号是从公共光通道导出的，电光晶体（4）的固有双折射不影响它们的相位差。 可以使用9°棱镜来代替反光镜（7）来反转光。 灯的输入和输出通道可以分开。 指定测量结果信号（S）的温度补偿方法。

公开(公告)号：US5196695A

公开(公告)日：1993-03-23

申请号：US877071

申请日：1992-05-01

申请人： Klaus Bohnert ,  Mathias Fauth

发明人： Klaus Bohnert ,  Mathias Fauth

IPC分类号： G01R15/24

CPC分类号： G01R15/241

摘要： In a fiber-optic sensor for alternating electric fields or voltages, the interference in a bimodal fiber (3) is measured passively. To this end, the mutually phase-shifted near-field and remote-field signals are separated by optical means (15) at the exit end of the bimodal fiber (3), and passed to appropriate detectors (17a, b, c), and the electrical signals created are evaluated by electronic means (18).

摘要翻译： 在用于交变电场或电压的光纤传感器中，双模光纤（3）中的干涉被动被测量。 为此，相互相移的近场和远场信号在双模光纤（3）的出射端由光学装置（15）分离，并被传送到适当的检测器（17a，b，c） 并且通过电子装置（18）评估产生的电信号。

公开(公告)号：US4939447A

公开(公告)日：1990-07-03

申请号：US269649

申请日：1988-11-10

申请人： Klaus Bohnert ,  Rolf Kirchhofer

发明人： Klaus Bohnert ,  Rolf Kirchhofer

IPC分类号： G01R15/24 ,  G01R19/00 ,  G01R29/08 ,  G01R29/12

CPC分类号： G01R29/12 ,  G01R15/248 ,  G01R29/0885

摘要： A fiber-optic voltage sensor comprises at least one fiber-optic, piezoelectric sensor element (2a, 2b, 2c, 2d), which measures a predeterminable directional component of a local electric field. One or more than one piezoelectric sensor elements (2a, 2b, 2c, 2d) are arranged serially between two ends of the fiber-optic voltage sensor, each piezoelectric sensor element (2a, 2b, 2c, 2d) respectively measuring a directional component of a local electric field, which component lies parallel to a path element assigned to it, the path elements as a whole forming an open polygon connecting the two ends of the fiber-optic voltage sensor. Each sensor element (2a, 2b, 2c, 2d) has a gain which is proportional to a length of the path element assigned to it. In a preferred embodiment, the piezoelectric sensor elements (2a, 2b, 2c, 2d) are connected by spacers (3a, 3b, 3c).Preferably, the piezoelectric sensor elements (2a, 2b, 2c, 2d) are disc-shaped and the spacer (3a, 3b, 3c) are cylindrical and form as a whole a cylindrical body.

摘要翻译： 光纤电压传感器包括测量局部电场的可预定方向分量的至少一个光纤压电传感器元件（2a，2b，2c，2d）。 一个或多个压电传感器元件（2a，2b，2c，2d）串联布置在光纤电压传感器的两端之间，每个压电传感器元件（2a，2b，2c，2d）分别测量 局部电场，该分量平行于分配给它的路径元件，路径元件整体形成连接光纤电压传感器的两端的开放多边形。 每个传感器元件（2a，2b，2c，2d）具有与分配给它的路径元件的长度成比例的增益。 在优选实施例中，压电传感器元件（2a，2b，2c，2d）通过间隔件（3a，3b，3c）连接。 优选地，压电传感器元件（2a，2b，2c，2d）是圆盘形的，并且间隔件（3a，3b，3c）是圆柱形的并且整体形成为圆柱体。

公开(公告)号：US4929830A

公开(公告)日：1990-05-29

申请号：US267299

申请日：1988-11-04

申请人： Klaus Bohnert ,  Meinolph Kaufmann ,  Jurgen Nehring

发明人： Klaus Bohnert ,  Meinolph Kaufmann ,  Jurgen Nehring

IPC分类号： G01R15/24 ,  G01R29/08 ,  G01R29/12 ,  G02B6/00

CPC分类号： G01R29/0885 ,  G01R15/248 ,  G01R29/12

摘要： A fibre-optic sensor for measuring a particular directional component of an electric field comprises a piezoelectric body (4) and a glass fiber (5a) which is rigidly connected to the piezoelectric body (4) in a given length section. A crystal class and a crystallographic orientation of the piezoelectric body (4) is selected in such a manner that only the directional component which is parallel to a given body axis (h) of the piezoelectric body (4) causes a change in a length of the glass fiber (a) by means of an inverse piezoelectric effect. The change in length is measured interferometrically. In a preferred embodiment, the piezoelectric body has the shape of a disk, of a plate or of a hollow cylinder.

摘要翻译： 用于测量电场的特定方向分量的光纤传感器包括在给定长度部分中刚性地连接到压电体（4）的压电体（4）和玻璃纤维（5a）。 以这样的方式选择压电体（4）的晶体类和晶体取向，即只有平行于压电体（4）的给定体轴（h）的方向分量导致长度的变化 玻璃纤维（a）通过反压电效应。 长度的变化是通过干涉测量的。 在优选实施例中，压电体具有盘，板或中空圆筒的形状。