Improvement of Pulse Voltage Generated by Wiegand Sensor Through Magnetic-Flux Guidance
Improvement of Pulse Voltage Generated by Wiegand Sensor Through Magnetic-Flux Guidance
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DOI：
10.3390/s20051408
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发表时间：
2020-03-01
期刊：
影响因子：
3.9
通讯作者：
Takemura, Yasushi
中科院分区：
文献类型：
--
作者：
Yang, Chao;Sakai, Takafumi;Takemura, Yasushi
韦根线中的磁化反转在导线周围的拾波线圈中感应出脉冲电压，称为韦根脉冲。韦根传感器具有韦根线和拾波线圈。韦根脉冲的幅度和宽度与磁场变化的频率无关。脉冲由Wiegand传感器产生，这有助于将Wiegand传感器用作无电池设备的电源。为了满足功耗要求，需要在不改变外场条件的情况下，最大化来自韦根传感器的脉冲信号的能量。在实验之前，模拟了从所施加的磁体在空气中和在韦根线中产生的磁场的分布。模拟预测通过韦根线中心的磁通密度增加。研究表明，通过韦根线中心的磁通密度、拾波线圈的位置以及韦根传感器与磁感线之间的夹角是影响韦根脉冲能量的主要因素。得到了这些因素与Wiegand脉冲能量的关系。
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.