Invention Grant
US09310399B2 Fiber-optic current sensing using a sensor with exchangeable sub-modules
有权
使用具有可更换子模块的传感器进行光纤电流检测
- Patent Title: Fiber-optic current sensing using a sensor with exchangeable sub-modules
- Patent Title (中): 使用具有可更换子模块的传感器进行光纤电流检测
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Application No.: US13492364Application Date: 2012-06-08
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Publication No.: US09310399B2Publication Date: 2016-04-12
- Inventor: Klaus Bohnert , Andreas Frank , Robert Wüest
- Applicant: Klaus Bohnert , Andreas Frank , Robert Wüest
- Applicant Address: CH Zurich
- Assignee: ABB RESEARCH LTD
- Current Assignee: ABB RESEARCH LTD
- Current Assignee Address: CH Zurich
- Agency: Buchanan Ingersoll & Rooney PC
- Main IPC: G01R19/00
- IPC: G01R19/00 ; G01C25/00 ; G01R15/24 ; G01R35/00

Abstract:
A fiber-optic current sensor includes a measuring unit having a light source and a light detector, and a sensing head having a sensing fiber wound around a conductor and a retarder connected to the sensing fiber. The scale factor as a function of current of the fiber-optic current sensor is described by the product of two scaling functions fe′ and fs′ for the measuring unit and the sensing head, respectively. The data describing the scaling functions fe′, fs′ is stored in a memory of the measuring unit, while the data describing the scaling function fs′ is also stored in a memory of the sensing head. Providing two such memory devices allows to store the scaling functions fe′ and fs′ separately, thereby turning the control unit as well as the sensor head into easily replaceable modules.
Public/Granted literature
- US20120283969A1 FIBER-OPTIC CURRENT SENSING USING A SENSOR WITH EXCHANGEABLE SUB-MODULES Public/Granted day:2012-11-08
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