结合数字信息系统的滑线变阻器实验演示

Experimental Demonstration of Slide Wire Rheostat Combined with Digital Information System

利用位移、电压和电流传感器,结合数据采集装置与计算机相关软件构建了数字信息实验系统。利用数字信息实验系统对滑线变阻器实验中的制流电路和分压电路实验进行了拓展,可以实时演示实验的制流特性曲线和分压特性曲线。实验中改变相关参数后的曲线特征可以方便地通过数字信息系统演示出来。这种演示在传统电学实验教学中引入基于传感器的数字信息系统,丰富了实验教学手段和教学内容,一方面有助于教师实验指导,另一方面有利于提高学生兴趣,加深学生对实验规律的认识掌握。

By using displacement,voltage and current sensors,data acquisition device and computer related software,a digital information experiment system is constructed.By using the digital information experiment system,the experiment of current making circuit and voltage dividing circuit in the experiment of sliding wire rheostat is expanded,and the current making characteristic curve and voltage dividing characteristic curve of the experiment can be demonstrated in real time.In the experiment,the curve characteristics after changing the relevant parameters can be easily demonstrated by the digital information system.This kind of demonstration introduces the digital information system based on the sensor in the traditional electrical experiment teaching,which enriches the experimental teaching means and contents.On the one hand,it is helpful for the teacher to guide the experiment,on the other hand,it is helpful to improve the students’interest and deepen the students’understanding of the experimental law.