Design of Highly Accurate and Sensitive Weak Magnetic Field Measuring Instruments Based on the Weak Magnetic Field Principle Research

Qiulin Li; Wei Jiang; Qiao Li; Yixin Li

doi:10.47297/taposatWSP2633-456901.20250601

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Design of Highly Accurate and Sensitive Weak Magnetic Field Measuring Instruments Based on the Weak Magnetic Field Principle Research

6卷第1期

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Design of Highly Accurate and Sensitive Weak Magnetic Field Measuring Instruments Based on the Weak Magnetic Field Principle Research
Design of Highly Accurate and Sensitive Weak Magnetic Field Measuring Instruments Based on the Weak Magnetic Field Principle Research
1.Chengdu Technological University, School of Electronic Engineering, Chengdu, Sichuan, China
2.Guang'an Excellence School, Guangan, Sichuan, China
2025年6卷第1期页码：5-9
纸质出版日期：2025-01-21
DOI：10.47297/taposatWSP2633-456901.20250601
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(2025). Design of Highly Accurate and Sensitive Weak Magnetic Field Measuring Instruments Based on the Weak Magnetic Field Principle Research. 科技理论与实践（英文版）, 6(1), 5-9.

Li Qiulin,Jiang Wei,Li Qiao,et al.Design of Highly Accurate and Sensitive Weak Magnetic Field Measuring Instruments Based on the Weak Magnetic Field Principle Research[J].Theory and Practice of Science and Technology,2025,06(01):5-9.
(2025). Design of Highly Accurate and Sensitive Weak Magnetic Field Measuring Instruments Based on the Weak Magnetic Field Principle Research. 科技理论与实践（英文版）, 6(1), 5-9. DOI： 10.47297/taposatWSP2633-456901.20250601.

Li Qiulin,Jiang Wei,Li Qiao,et al.Design of Highly Accurate and Sensitive Weak Magnetic Field Measuring Instruments Based on the Weak Magnetic Field Principle Research[J].Theory and Practice of Science and Technology,2025,06(01):5-9. DOI： 10.47297/taposatWSP2633-456901.20250601.

摘要

Abstract

Weak magnetic field measurement is one of the important means to study the properties of matter and explore the unknown world. In order to realize high-precision weak magnetic field signal measurement

it is crucial to design an efficient signal acquisition system. Traditional magnetometers with analog output often require digital acquisition systems for analog/digital conversion

which increases the complexity of the system. To solve this problem

an innovative method based on Faraday's law of electromagnetic induction is proposed in this paper. This method cleverly converts the magnetic field strength signal into a current strength signal. Thus

it simplifies the measurement process and improves the sensitivity of the measurement. After experimental verification

the system is able to achieve a magnetic field measurement accuracy as high as 1×10⁻⁵ T. This fact proves the effectiveness and wide application potential of this method in weak magnetic field measurement

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references

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Ge Lili, Ren Qiongying, Zhao Hua, et al. Design and realization of high-precision weak magnetic field signal acquisition system[J]. Spacecraft Environmental Engineering, 2020, 37(1): 60-64.

Li Chaohua. Faraday's law of electromagnetic induction-experimental verification of the magnitude of induced electromotive force[J]. Experimental Teaching and Instrumentation, 2007(12): 24.

Zhao Xiaowei. Research on the measurement of geomagnetic field[J]. Journal of Yan'an University (Natural Science Edition), 2009, 28(4): 48-49, 53.

Hao Zhenjun. Cultivating students' scientific thinking method by combining experiment and logical reasoning--Taking "free-fall motion" as an example[J]. Research on Mathematical and Physical Problem Solving, 2024(22): 104-107.

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