Research on Magnetic Field Distribution of Helmholtz Coils Based on a Three-Dimensional Magnetic Field Automatic#br#
Measurement Experimental Device#br#
Abstract: A three-dimensional automated magnetic field measurement experimental device was developed
based on the Hall effect.Its 3D Hall probe can simultaneously measure the three-dimensional components of
magnetic flux density at any spatial position.Different 3D spatial magnetic field distributions can be generated
by adjusting the center-to-center distance of the Helmholtz coils and the excitation current,and one-key
automated 3D magnetic field distribution measurement can be realized.Experimentally,the magnitude of the
magnetic flux density at the center of the Helmholtz coils under different excitation currents was measured,
verifying its linear relationship with the excitation current,and the relative error between the experimentally
measured average value and the theoretically calculated value was calculated.The distribution laws of the three-
dimensional magnetic flux density along different axes in various regions between the Helmholtz coils were
further investigated,providing experimental support for an in-depth understanding of the magnetic field
distribution of Helmholtz coils.
张敬芳 , 王明超, 李泽朋, 齐雪莲. 基于三维磁场自动化测量实验装置的亥姆霍兹线圈磁场分布研究#br#[J]. 大学物理实验, 2026, 39(2): 29-36.
ZHANG Jingfang , WANG Mingchao, LI Zepeng, QI Xuelian. Research on Magnetic Field Distribution of Helmholtz Coils Based on a Three-Dimensional Magnetic Field Automatic#br#
Measurement Experimental Device#br#. Physical Experiment of College, 2026, 39(2): 29-36.