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A Flexible Inductive Coil Tag for Household Two-Wire Current Sensing Applications

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4 Author(s)
Yung-Chang Chen ; Department of Electronics Engineering and the Institute of Electronics, National Chiao Tung University, Hsinchu, Taiwan ; Sung-Chu Yu ; Shih-Hsien Cheng ; Yu-Ting Cheng

This paper presents a flexible inductive coil tag for sensing the electric current in the two-wire power cords of household goods. The tag is fabricated using a complementary metal-oxide semiconductor compatible SU-8 flexible technology which provides unique device characteristics of low-cost, reliability and pervasiveness. With a 30-turns coil design in an area of 0.5 × 1 cm2, the coil tag can provide sensitivity of 18 and 21 μV/A for detecting 50-and 60-Hz electric current in the ampere regime, respectively.

Published in:

IEEE Sensors Journal  (Volume:12 ,  Issue: 6 )