Electric current measurement using fiber-optic curvature sensor

被引：10
|
作者：
Di, Haiting [1 ]
Xin, Ying [1 ]
Sun, Suping [2 ]
机构：
[1] Northeast Forestry Univ, Coll Engn Technol, Harbin 150040, Peoples R China
[2] Harbin Univ Sci & Technol, Harbin 150040, Peoples R China
来源：
OPTICS AND LASERS IN ENGINEERING | 2016年 / 77卷
关键词：
Electric current measurement; Fiber-optic curvature sensor; Electromagnetic principle; Cantilever structure; STRAIN;
D O I：
10.1016/j.optlaseng.2015.07.009
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A novel fiber-optic curvature sensor, which can measure curvature directly, has been developed in recent years. The electric current measurements system based on fiber-optic curvature sensor and electromagnetic principle is developed. A fiber-optic curvature sensor is bonded to a thin-walled cantilever and two circular magnet targets with the same parameters are configured at the tip of the cantilever symmetrically. In this case, the throughput of the sensor will be changed due to the bending deformation of cantilever, which is proportional to the electromagnetic force caused by measured electric current. Direct and alternate characteristics of the proposed measurement system are studied experimentally. The results show that the measurement errors are within the range of +/- 5.5 mA and the corresponding accuracy is within 1% at the current measurement range from -300 mA to 300 mA, which indicate the feasibility of the proposed measurement system. (c) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：26 / 30
页数：5
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