霍尔元件在电磁感应实验中的应用  

Application of Hall sensors in electromagnetic induction experiment

作　　者：孙晓燕 吴天昊 黄庆 田永宁 李成金 SUN Xiao-yan;WU Tian-hao;HUANG Qing;TIAN Yong-ning;LI Cheng-jin(City College of Suzhou,Suzhou,Jiangsu 215104,China)

机构地区：[1]苏州城市学院光电与能源工程系,江苏苏州215104

出　　处：《大学物理》2022年第2期44-48,共5页College Physics

基　　金：苏州城市学院精品课程建设项目资助。

摘　　要：将非磁体和磁体分别从竖直放置的铝管或铜管的上端自由释放后,两者的下落运动完全不同,前者迅速自由下落,而后者却缓慢地穿过管子落地.本文通过建模和化简,建立并求解其动力学方程,应用霍尔元件、LED管和STM32嵌入式系统,搭建测量系统,介绍了将定性实验转换为定量实验的过程,并分析比较了实验结果与理论计算值之间的差异.It is a typical experiment of electromagnetic induction that a magnet falls in a non-ferromagnetic metal tube.In this paper,the dynamics for the magnet is set up and solved according to simplification model.A set of drop velocity of the magnet are measured by a system consisted of Hall sensors,LED and STM32.The result is analyzed and compared with the theoretic simulation values.

关 键 词：落磁体 非铁磁金属管 感应电流 收尾速度 时间常量 

分 类 号：O441.3[理学—电磁学]