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