一种空间磁场可视化测量系统的设计

doi:10.14139/j.cnki.cn22-1228.2022.01.008

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摘要

为了精确测量并形象展示空间磁场分布，我们设计了一种基于单片机的空间磁场可视化测量系统。该系统由磁场数据采集存储模块、数据传输模块、测量结果显示模块三部分构成。首先由霍尔磁敏传感器测量空间各点的三维磁感应强度分量，然后通过单片机采集、存储空间特定区域内的磁感应强度数据，并通过 USB 串口导入计算机，最后用计算机显示测量结果并进行数据仿真，模拟空间磁场

强度矢量分布图，实现空间磁场的可视化测量及展示功能。实验结果表明，该磁场测量系统的精度为1 μT，量程范围为±8 500 μT，测量误差为 0．62%。这种空间磁场可视化测量系统精度高，量程范围广，能形象展示空间磁场分布，可以辅助大学物理实验教学，也可以应用于复杂多变磁场的测量。

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	李雪琴
	唐艳妮
	刘芯
	何楚洹
	任静

关键词: 三维磁场磁感应强度磁敏传感器单片机数据仿真

Abstract:

In order to accurately measure and visualize the spatial magnetic field distribution，we designed a visual measurement system of spatial magnetic field based on single chip microcomputer．The system consists of magnetic field data acquisition and storage module，data transmission module and measurement result display module．Firstly，the three-dimensional magnetic induction component of each point in space is measured by Hall magnetic sensor．Then，the data of magnetic induction intensity in a certain area is collected and stored by a single chip microcomputer，and is imported into computer through USB serial port． Finally，the measurement results are displayed by computer，and through data simulation to show the vector distribution of spatial magnetic field intensity，so as to realize the visual measurement and display function of spatial magnetic field．Experimental results show that the accuracy of the magnetic field measurement system is 1 μT，the measuring tange is ± 8 500 μT，and the measurement error is 0． 62%． This visualization measurement system of spatial magnetic field has high precision，wide range，which can visually display the spatial magnetic field distribution，can assist university physics experiments teaching，also can be applied to the measurement of complex and variable magnetic fields．

Key words: three-dimensional magnetic field magnetic induction intensity magnetic sensor single chip microcomputer data simulation

出版日期: 2022-02-25 发布日期: 2022-02-25 整期出版日期: 2022-02-25

ZTFLH:

O 441．5

引用本文:

李雪琴, 唐艳妮, 刘芯, 何楚洹, 任静. 一种空间磁场可视化测量系统的设计 [J]. 大学物理实验, 2022, 35(1): 34-39.
LI Xueqin, TANG Yanni, LIU Xin, HE Chuhuan, ＲEN Jing. Design of a Visual Measurement System for Spatial Magnetic Field . Physical Experiment of College, 2022, 35(1): 34-39.

链接本文:

http://dawushiyan.jlict.edu.cn/CN/10.14139/j.cnki.cn22-1228.2022.01.008 或 http://dawushiyan.jlict.edu.cn/CN/Y2022/V35/I1/34

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