基于线性霍尔传感器的太阳能磁悬浮演示仪

A demonstration device of solar magnetic suspension based on linear Hall-sensor

应用电磁学理论、机械力学以及电子技术自制了一套太阳能磁悬浮演示仪,该演示实验仪由太阳能电池供电,利用线性霍尔传感器来探测悬浮物体的位移,以达到控制悬浮的目的,添加数码管电压显示电路,可以定量显示电磁铁的磁性在悬浮过程中随悬浮物位置变化的自动调整,能精确而直观地演示磁悬浮的物理现象.该仪器结构简单、性能稳定、操作方便,能广泛用于课堂演示、课程设计等场合,在实际应用中取得了良好的教学效果.

A demonstration device of solar magnetic suspension is introduced by using the electro-magnetic theory,mechanical and electronic technologies.This instrument is powered by solar energy,designed with integrated linear Hall sensor to probe the suspended object＇s displacement,and quantitatively displays automatic adjustment of the electromagnet＇s magnetism through digital tube voltage display circuit,which can accurately and visually demonstrate the physical phenomenon of magnetic suspension.The structure of this instrument is simple,stable performance,ease to operate,can be widely used in classroom demonstration,curriculum design and other situations,and thus we can obtain a good teaching result in practical applications.