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Open AccessArticle

Improvement of Pulse Voltage Generated by Wiegand Sensor Through Magnetic-Flux Guidance

1
Department of Electrical and Computer Engineering, Yokohama National University, Yokohama 240-8501, Japan
2
School of Electrical Engineering, Nanjing Institute of Industry Technology, Nanjing 210023, China
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(5), 1408; https://doi.org/10.3390/s20051408
Received: 16 January 2020 / Revised: 20 February 2020 / Accepted: 2 March 2020 / Published: 4 March 2020
(This article belongs to the Section Sensor Materials)
Magnetization reversal in a Wiegand wire induces a pulse voltage in the pickup coil around the wire, called the Wiegand pulse. The Wiegand sensor features the Wiegand wire and the pickup coil. The amplitude and width of the Wiegand pulse are independent of the frequency of the magnetic-field change. The pulse is generated by the Wiegand sensor, which facilitates the use of the Wiegand sensor as a power supply for equipment without batteries. In order to meet the power consumption requirements, it is necessary to maximize the energy of the pulse signal from the Wiegand sensor, without changing the external field conditions. The distributions of the magnetic field generated from the applied magnet in air and in the Wiegand wire were simulated before the experiments. Simulation predicted an increase in the magnetic flux density through the center of the Wiegand wire. This study determined that the magnetic flux density through the center of the Wiegand wire, the position of the pickup coil, and the angle between the Wiegand sensor and the magnetic induction line were the main factors that affected the energy of a Wiegand pulse. The relationship between these factors and the energy of the Wiegand pulse were obtained. View Full-Text
Keywords: Wiegand sensor; large Barkhausen jump; Wiegand pulse; magnetization reversal; Wiegand wire Wiegand sensor; large Barkhausen jump; Wiegand pulse; magnetization reversal; Wiegand wire
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MDPI and ACS Style

Yang, C.; Sakai, T.; Yamada, T.; Song, Z.; Takemura, Y. Improvement of Pulse Voltage Generated by Wiegand Sensor Through Magnetic-Flux Guidance. Sensors 2020, 20, 1408. https://doi.org/10.3390/s20051408

AMA Style

Yang C, Sakai T, Yamada T, Song Z, Takemura Y. Improvement of Pulse Voltage Generated by Wiegand Sensor Through Magnetic-Flux Guidance. Sensors. 2020; 20(5):1408. https://doi.org/10.3390/s20051408

Chicago/Turabian Style

Yang, Chao; Sakai, Takafumi; Yamada, Tsutomu; Song, Zenglu; Takemura, Yasushi. 2020. "Improvement of Pulse Voltage Generated by Wiegand Sensor Through Magnetic-Flux Guidance" Sensors 20, no. 5: 1408. https://doi.org/10.3390/s20051408

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