亥姆霍兹磁场分布演示仪的设计与实现

Design and Implement of Demonstrator for Magnetic Field in Helmholtz's Loop

亥姆霍兹线圈是一对匝数和半径相同的共轴平行放置的圆线圈,两线圈间的距离等于线圈半径。亥姆霍兹磁场分布演示仪是利用单片机技术将霍尔探头检测到的磁场信号显示到点阵屏上,移动探头就可以将磁场分布情况以曲线的形式显示出来。该仪器主要服务于实验教学,生动立体的演示给教学带来了很好的效果。

Helmhohz＇s loop is a pair of round loop with same circle and radius, which is put in-line and the distance between two loops is the same as the radius of the loops. The demonstrator of magnetic field in Helmhoitz＇s loop that designed by single-chip technology detects the magnetic intensity signals by Hall probe and shows it on a lattice screen. Meanwhile, with the movement of Hall probe, the distribution of magnetic field is showed by the form of curve. Its stability and reliability are demonstrated in physical experiment teaching.