公开(公告)号：EP2306211A1

公开(公告)日：2011-04-06

申请号：EP09171887.4

申请日：2009-09-30

Applicant: ABB Research Ltd.

Inventor： Wüest, Robert ,  Frank, Andreas ,  Bohnert, Klaus ,  Gabus, Philippe

IPC: G01R3/00 ,  G01R15/24 ,  G01R33/032

CPC classification number: G01R15/246 ,  G01R3/00 ,  G01R33/0322

Abstract: For tuning the fiber optic retarder (4) of a fiber optic current sensor towards a desired temperature dependence, the sensing fiber (5) is exposed to a magnetic field or corresponding electric current and the sensor signal as well as the signal's dependence on the retarder temperature are measured From this initial sensor signal and its temperature dependence, a target sensor signal can be determined, at which the dependence on the retarder temperature equals a desired value. Then, the retarder (4) is thermally treated until the sensor signal reaches the target value. The method obviates the need for repetitively measuring the temperature dependence during the tuning process.

Abstract translation: 用于调谐光纤电流传感器的光纤延迟器（4）向期望的温度依赖性，传感纤维（5）暴露于磁场或相应的电流和传感器信号以及该信号的上延迟依赖 温度测量从该初始传感器信号和它的温度依赖性，目标传感器信号可以是确定性的开采，在该对延迟器温度的依赖性等于期望的值。 然后，延迟器（4）进行热处理，直到传感器信号达到目标值。 该方法避免了对反复测量在调谐过程中的温度依赖性的需要。

公开(公告)号：EP2306211B1

公开(公告)日：2012-04-18

申请号：EP09171887.4

申请日：2009-09-30

Applicant: ABB Research Ltd.

Inventor： Wüest, Robert ,  Frank, Andreas ,  Bohnert, Klaus ,  Gabus, Philippe

IPC: G01R3/00 ,  G01R15/24 ,  G01R33/032

CPC classification number: G01R15/246 ,  G01R3/00 ,  G01R33/0322

公开(公告)号：EP2306212B1

公开(公告)日：2011-11-02

申请号：EP09171889.0

申请日：2009-09-30

Applicant: ABB Research Ltd.

Inventor： Wüest, Robert ,  Frank, Andreas ,  Bohnert, Klaus

IPC: G01R15/24 ,  G01R33/032

CPC classification number: G01R15/246 ,  G01R33/0322

公开(公告)号：EP2306212A1

公开(公告)日：2011-04-06

申请号：EP09171889.0

申请日：2009-09-30

Applicant: ABB Research Ltd.

Inventor： Wüest, Robert ,  Frank, Andreas ,  Bohnert, Klaus

IPC: G01R15/24 ,  G01R33/032

CPC classification number: G01R15/246 ,  G01R33/0322

Abstract: A fiber optic current or magnetic field sensor uses a sensing fiber (5) in a coil for measuring a current or a magnetic field and has a retarder (4) 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 (5) in order to minimize the influence of temperature variations and manufacturing tolerances on the overall scale factor of the sensor.

Abstract translation: 一种光纤电流或磁场传感器使用在线圈的传感纤维（5），用于测量的电流或磁场，并且具有延迟器（4）为直线偏振光和椭圆偏振光之间转换的延迟的相位差，其 温度依赖性，以及在相对于所述光纤线圈的平面的方位角是在传感纤维（5）的双折射的依赖性，以尽量减少温度变化和制造公差的上的总体标度因子的影响的优化 传感器。