In this paper, we demonstrate a magnetic/mechanical approach for optimizing a miniature self-powered current sensor. The sensor consists of a piezoelectric PZT sheet, CuBe cantilever beam, NdFeB magnet, and mechanical clamp. When the sensor is placed nearby an AC-current carrying wire from a breaker, the magnet fixed on the beam of the sensor experiences an alternative magnetic attractive and repulsive force produced by an AC magnetic field generated by the wire. Due to the alternative magnetic attractive and repulsive force, the magnet fixed on the beam is oscillated. The oscillating beam deforms the PZT sheet and subsequently produces strain in the PZT sheet. Due to the piezoelectric effect, the strain is converted to a voltage response. Through the optimized approach, the voltage output of the sensor is increased from 1.27 volts to 4.01 volts when the sensor is used to detect an AC current-carrying wire of 8 ampere at 60 Hz.
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ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
September 16–18, 2013
Snowbird, Utah, USA
Conference Sponsors:
- Aerospace Division
ISBN:
978-0-7918-5603-1
PROCEEDINGS PAPER
A Magnetic/Mechanical Approach for Optimizing a Miniature Self-Powered Current Sensor
Tien-Kan Chung
,
Tien-Kan Chung
National Chiao Tung University, Hsinchu, Taiwan
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Po-Chen Yeh
,
Po-Chen Yeh
National Chiao Tung University, Hsinchu, Taiwan
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Chieh-Min Wang
Chieh-Min Wang
National Chiao Tung University, Hsinchu, Taiwan
Search for other works by this author on:
Tien-Kan Chung
National Chiao Tung University, Hsinchu, Taiwan
Po-Chen Yeh
National Chiao Tung University, Hsinchu, Taiwan
Chieh-Min Wang
National Chiao Tung University, Hsinchu, Taiwan
Paper No:
SMASIS2013-3124, V001T04A010; 6 pages
Published Online:
February 20, 2014
Citation
Chung, T, Yeh, P, & Wang, C. "A Magnetic/Mechanical Approach for Optimizing a Miniature Self-Powered Current Sensor." Proceedings of the ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. Volume 1: Development and Characterization of Multifunctional Materials; Modeling, Simulation and Control of Adaptive Systems; Integrated System Design and Implementation. Snowbird, Utah, USA. September 16–18, 2013. V001T04A010. ASME. https://doi.org/10.1115/SMASIS2013-3124
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