基于霍尔元件的螺线环磁场测量装置及实验设计

Toroidal solenoid magnetic field measurement device and experimental design based on Hall element

根据“新工科”背景下大学物理实验教学的改革需求和霍尔元件发展的新趋势,研制了螺线环磁场测量装置,装置由自制的磁场测试仪、霍尔元件尺、移动导轨和螺线环组成。通过给螺线环通入直流励磁电流(强度可调),使螺线环内部产生稳定的磁场,使用自行设计的霍尔元件移动尺可测量螺线环磁感应强度与励磁电流、环路半径之间的关系,还可以测量螺线环的磁场分布和空气磁导率。相应的实验设计可以帮助学生直观地认识螺线环磁场的分布规律,理解霍尔效应测量磁场的基本原理,深化学生对磁场相关理论的理解,同时促进理论学习与工程应用的融合,培养并锻炼学生分析解决实际工程问题的能力。

Under the background of new engineering,according to the reform needs of university physics experimental teaching and the new trend of the development of Hall elements,a toroidal solenoid magnetic field measurement device based on a Hall element is developed.The device consists of a self-made magnetic field tester,a Hall element ruler,a moving guide rail,and a toroidal solenoid.When connecting to an adjustable DC power supply,the solenoid will generate a stationary magnetic field.By using the self-designed Hall element moving ruler,the relationship between the magnetic induction intensity of the toroidal solenoid and the current and the loop radius can be measured.In addition,the magnetic field distribution of the solenoid and the magnetic permeability of air can also be measured.The corresponding experimental design is helpful for students to understand the toroidal solenoid magnetic field distribution more intuitively,and understand the basic principle of magnetic field measurement by the Hall effect,so as to deepen students'understanding of magnetic field,promote the integration of theoretical learning and engineering application,and cultivate and exercise students’ability to analyze complex engineering problems.