Abstract
An out-of-plane sensing fluxgate sensor based on the printing process and assembled with core and flux conductors is proposed. The assisted inverted V-shaped flux conductor is utilized to collect the out-of-plane magnetic flux and direct it in the in-plane direction. Through the transmitted magnetic flux, the planar construction of the coil and core achieves out-of-plane sensing. Under a sinusoidal excitation signal of frequency 50 kHz and a current of 400 mA, the presented sensor shows a sensitivity of 127.3 V/T within a linear range of 0 µT–80 µT and with nonlinearity below 5%.
Highlights
Hall-effect sensors, magnetoresistive sensors, search coil sensors, and fluxgate sensors are some of the commonly used magnetic sensors
Combining the planar pattern formed by the directwrite process and assembling the flux conductor, this study shows a rapid forming method for the planar fluxgate sensor
The fluxgate sensor that consisted of the planar coil patterns and the flux conductor has been proposed with their performance investigated
Summary
Hall-effect sensors, magnetoresistive sensors, search coil sensors, and fluxgate sensors are some of the commonly used magnetic sensors. Fluxgate sensors are used for the measurement in static and low-frequency magnetic fields and have the ability to sense both the magnetic field amplitude and direction. Their stability and robustness allow them to be used in harsh environments.. The interaction between the excitation magnetic field generated by the excitation coil and the external magnetic field changes the magnetization state of the magnetic core, thereby affecting the output current of the sensing coil This phenomenon is used to measure the external magnetic field. The planar fluxgate sensor can only measure magnetic fields in the direction of the element plane due to the limitations of the flat magnetic core.. Due to the characteristic of the flat magnetic core, a planar two-axis magnetometer has been realized in the previous work. in this article, the main concern is on the outof-plane sensing magnetometer and the interference prevention of the in-plane magnetic field through this design
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