数字海洋与水下攻防2023，Vol.6Issue(6)：743-748,6.DOI:10.19838/j.issn.2096-5753.2023.06.013
自激振荡磁感应传感器研究
Research on Self-oscillating Magnetic Induction Sensors
摘要
Abstract
Aiming at the application requirements of digital and small-volume magnetic field sensors,it is necessary to explore a new magnetic field sensor,because existing inductive magnetic field sensors generally have the problems of complex hardware circuits,the need to use analog-to-digital conversion devices for digitalization,and it is difficult to achieve miniaturization.In this paper,a magnetic field sensor based on self-oscillating magnetic induction technology is proposed.Its measurement principle is based on the linear relationship between the duty cycle of the excitation voltage and the measured magnetic field.Compared with other magnetic field sensors,the output of the magnetic field sensor proposed in this paper is in the form of duty cycle,which does not require additional filtering circuits and analog-to-digital conversion circuits,and the hardware circuit is relatively simple,so it is beneficial to digitalization and miniaturization.Besides,the generation process of self-excited oscillation is analyzed,and the theoretical equation of excitation voltage duty cycle and measured magnetic field is established.A prototype is made to verify the feasibility of the magnetic field sensor based on self-excited oscillation magnetic induction technology.The results show that under open-loop conditions,the linearity of the sensor is 0.98%with the range of±100 000 nT.关键词
磁场传感器/数字式传感器/自激振荡Key words
magnetic sensors/digital sensors/self-oscillating分类
信息技术与安全科学引用本文复制引用
张志勇,陈正想,高俊奇..自激振荡磁感应传感器研究[J].数字海洋与水下攻防,2023,6(6):743-748,6.基金项目
国家重点研发计划"海洋电磁场传感器研发与电磁探测应用示范"(2022YFC3104002). （2022YFC3104002）
