两臂式静电场测试笔

TWO ARMS ELECTROSTATIC FIELD TEST PEN

利用导电微晶静电场描绘仪模拟静电场分布时,先利用单臂测试探针找到等势点,然后通过数条纹格数的方法确定该等势点的位置,该方法导致实验效率低和测量精度低.为解决这个问题,根据圆规的工作原理,研制了两臂式静电场测试笔.该测试笔一臂为测量臂,另一臂为定位臂.试验时,利用测量臂测出等势点的位置,再利用两臂之间的距离确定等势点的位置,最后利用圆规式定位法确定该等势点在坐标纸上的位置.该测试笔不仅能极大地提高测量精度和实验效率,而且还具有适用范围广、试验成本低和制造成本低的优点.

Low efficiency and low accuracy are caused by using the one arm test pen to depict the electrostatic field distribution.To solve the problem,the two arms test pen is developed according to the working principle of compasses.One arm of this test pen has the function of testing the equal potential,and the other of it has the function of location.In the experiment,firstly use the measurement arm to get the position of the equipotential point.And then verify the location of the equipotential point by the distance of two arms.Finally,determine the equipotential points on the graph paper and depict the electrostatic field distribution by the compass positioning method.This two arms test pen have many advantages consisting of the higher efficiency and the higher precision,the wider application,the lower experimental cost and lower instrument manufacturing cost.