一种霍尔效应法测量螺线管轴线磁感应强度的实验装置

Experimental device based on Hall effect for measuring the magnetic inductive intensity of the solenoid axis

提出了一种霍尔效应法测量螺线管轴线磁感应强度的实验装置。该实验装置采用直线电机带动霍尔元件在螺线管中移动,定位准确方便。螺线管励磁电流及霍尔元件驱动电流采用数控恒流源来提供,可以方便地改变方向及大小,精确控制测量时间,避免螺线管发热,从而提高实验精度,保护实验装置。

An experimental device based on Hall effect for measuring the magnetic inductive intensity of the solenoid axis has been put forward,which adopts linear motor for driving the Hall element move in the solenoid conveniently and accurately. The solenoid field current and the drive current of the hall element is provided by the numerically controlled constants- current source. So the direction and value can be changed easily,and the measuring time can be controlled accurately,avoiding the temperature of the solenoid is too high. Therefore,the accuracy can be improved,and the experimental apparatus can be protected.