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YIN Dong,ZHANG Xiufeng,Kian Hoong KWAN,WANG Gucheng.Research of Current Measurement System Based on Two-axis Anisotropic Magnetoresistive Sensor[J].JOURNAL OF POWER SUPPLY,2018,16(2):178-184
Research of Current Measurement System Based on Two-axis Anisotropic Magnetoresistive Sensor
Received:February 29, 2016  Revised:July 19, 2017
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DOI:10.13234/j.issn.2095-2805.2018.2.178
Keywords:anisotropic magnetoresistive(AMR) sensor  positioning algorithm  contactless measurement  sensor unit  Kaiser window function  Kalman filter
Fund Project:A Revolutionary AMR-based Energy Management System for a Smarter Home
           
AuthorInstitutionEmail
YIN Dong Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle of Ministry of EducationSouthwest Jiaotong University, Chengdu , China;The Clean Energy Center of Temasek Polytechnic, Singapore , Singapore 610923549@qq.com
ZHANG Xiufeng Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle of Ministry of EducationSouthwest Jiaotong University, Chengdu , China
Kian Hoong KWAN The Clean Energy Center of Temasek Polytechnic, Singapore , Singapore
WANG Gucheng The Clean Energy Center of Temasek Polytechnic, Singapore , Singapore
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Abstract:
      According to the measurement principle of magnetic field generated by wires using anisotropic magnetoresistive(AMR) sensor, two two-axis AMR sensors were utilized to establish a theoretical model of virtual isosceles rig-ht triangular structure, and a positioning algorithm is proposed to calculate any position in the virtual isosceles right triangle. In this way, a contactless method for current measurement can be achieved. A sensor unit and a test platform were built, and Kaiser window function and Kalman filter were specially designed to eliminate the influence of external magnetic field. Finally, the correctness of the proposed structure, positioning algorithm, and signal processing were verified through experiments.
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