公开(公告)号：US20180080958A1

公开(公告)日：2018-03-22

申请号：US15708968

申请日：2017-09-19

Applicant: ABB Schweiz AG

Inventor： Sergio Vincenzo Marchese ,  Xun Gu ,  Burak Büyükkavir ,  Klaus Bohnert ,  Tobias Erford

IPC: G01R15/24

Abstract: The invention relates to an assembly of a gas-tight compartment and an optical voltage sensor that further comprises a module. The module comprises an electro-optic crystal and electrodes, wherein the electro-optic crystal is the only element of the module to mechanically connect the two electrodes and to bridge the potentials of the two electrodes. The assembly is particuarly suited to measure direct current voltages.

公开(公告)号：US10302411B2

公开(公告)日：2019-05-28

申请号：US15696095

申请日：2017-09-05

Applicant: ABB Schweiz AG

Inventor： Xun Gu ,  Sergio Vincenzo Marchese ,  Klaus Bohnert

IPC: G01B9/02 ,  G01D5/26 ,  G01J9/02

Abstract: In order to measure the contrast of interference in an interference-based, closed-loop, phase-modulating optical sensor device, the gain of the feedback loop in a feedback controller is evaluated. This gain is found to be a measure for the contrast. The contrast evaluated in this way can e.g. be used for period-disambiguation when determining the measurand of the sensor device. The sensor device can e.g. be a high-voltage sensor or a current sensor.

公开(公告)号：US20160356823A1

公开(公告)日：2016-12-08

申请号：US15243713

申请日：2016-08-22

Applicant: ABB Schweiz AG

Inventor： Xun Gu ,  Sergio Vincenzo Marchese ,  Klaus Bohnert ,  Andreas Frank

IPC: G01R15/24 ,  G01D5/353

Abstract: An interferometric sensor and related methods are provided, with a sensing element whereby a measurand induces a relative phase shift between two waves, at least one detector measuring an interference signal between the two waves, and further including a phase shift detection unit having as input the interference signal and determining a first measure representative of the principal value of the relative phase shift, and a contrast detection unit having as input the interference signal for determining a second measure representative of the cross-correlation between the two waves, and a further a processing unit for converting the first and second measures to a measurand value.

Abstract translation: 提供了一种干涉测量传感器和相关方法，其中传感元件由此被测量引起两个波之间的相对相移，至少一个检测器测量两个波之间的干扰信号，并且还包括相移检测单元，该相移检测单元具有 干扰信号和确定表示相对相移的主值的第一测量值;以及对比度检测单元，其具有作为输入的干扰信号，用于确定代表两个波之间的互相关的第二测量，以及另外的处理 将第一和第二测量值转换为被测量值的单元。

公开(公告)号：US10416198B2

公开(公告)日：2019-09-17

申请号：US15708968

申请日：2017-09-19

Applicant: ABB Schweiz AG

Inventor： Sergio Vincenzo Marchese ,  Xun Gu ,  Burak Büyükkavir ,  Klaus Bohnert ,  Tobias Erford

IPC: G01R15/24

Abstract: The invention relates to an assembly of a gas-tight compartment and an optical voltage sensor that further comprises a module. The module comprises an electro-optic crystal and electrodes, wherein the electro-optic crystal is the only element of the module to mechanically connect the two electrodes and to bridge the potentials of the two electrodes. The assembly is particuarly suited to measure direct current voltages.

公开(公告)号：US20180066932A1

公开(公告)日：2018-03-08

申请号：US15696095

申请日：2017-09-05

Applicant: ABB Schweiz AG

Inventor： Xun Gu ,  Sergio Vincenzo Marchese ,  Klaus Bohnert

IPC: G01B9/02

CPC classification number: G01B9/02067 ,  G01D5/266 ,  G01J2009/0253

Abstract: In order to measure the contrast of interference in an interference-based, closed-loop, phase-modulating optical sensor device, the gain of the feedback loop in a feedback controller (12) is evaluated. This gain is found to be a measure for the contrast. The contrast evaluated in this way can e.g. be used for period-disambiguation when determining the measurand of the sensor device. The sensor device can e.g. be a high-voltage sensor or a current sensor.

公开(公告)号：US20180067147A1

公开(公告)日：2018-03-08

申请号：US15695858

申请日：2017-09-05

Applicant: ABB Schweiz AG

Inventor： XUN GU ,  Klaus Bohnert ,  Sergio Vincenzo Marchese

IPC: G01R15/24 ,  G01R19/00 ,  G01R35/00

CPC classification number: G01R15/241 ,  G01R15/246 ,  G01R19/0084 ,  G01R35/005

Abstract: In order to measure a voltage, an electro-optic element is placed in an electrical field generated by the voltage, and light is passed from a light source through a Faraday rotator and the electro-optic element onto a reflector and from there back through the electro-optic element and the Faraday rotator, thereby generating a voltage-dependent phase shift between two polarizations of the light. The interference contrast as well as a principal value of the total phase shift between said polarizations are measured and converted to a complex value having an absolute value equal to the contrast and a phase equal to the principal value. This complex value is offset and scaled using calibration values in order to calculate a compensated complex value. The voltage is derived from the compensated complex value.