文章基本信息

标题：DESIGN OF A HIGH-SENSITIVITY DEVICE FOR DETECTING WEAK MAGNETIC FIELDS
本地全文：下载
作者：Trong Vinh Dao ; Dang Khanh Le ; Minh Huy Le 等
期刊名称：Tạp chí Khoa học Đại học Đà Lạt
印刷版ISSN：0866-787X
出版年度：2022
卷号：13
期号：1
DOI：10.37569/DalatUniversity.13.1.1042(2023)
语种：English
出版社：Dalat University
摘要：An anti-serial fluxgate sensor configuration is proposed in this report. The design comprises two identical bilayer-rod fluxgate sensors connected anti-serially in a straight line. Each bilayer-rod sensor is constructed of an excitation coil and a pick-up coil wrapped around a core. The core material consists of Metglas ribbon, an amorphous alloy with high permeability, negligible hysteresis, and a high saturated magnetic field. The core is cut into a bar shape and uses double layers to enhance modulated flux density. A high sensitivity of 10 mV/Oe (with excitation of 45 kHz and 250 mA) is obtained experimentally with low noise of 1´10-5 Oe/Ö Hz at 1 Hz. In measurements of weak magnetic fields, the azimuth response indicates its vector feature. The proposed design is suitable for electronic compass and displacement applications.