液体深度测量装置及实验设计

Liquid depth measuring device and experimental design

应用物理学中的液体压强与液体深度的关系,以及物体变形与电阻改变的关系,通过测量一定液体深度处的变形电阻的电流值及该深度下的压强值,从而测出液体深度,再利用单片机计算和显示其液体深度等参数。经检验,达到了较高的测量精度,可以满足一般的工农业生产应用。将该实验应用于物理教学实验,还可以让学生学习和巩固流体力学、电学和固体力学等学科的知识。

By applying the relation of liquid pressure to liquid depth in physics and the relationship between deformation and resistance change,and through measuring the current value of deformation resistance at a certain depth and the pressure at this depth,the depth of the liquid is measured.Then by using SCM,the liquid depth and other parameters are calculated and displayed.It has been proved that the measurement accuracy is higher and can meet the general applications of the industrial and agricultural production. When this experiment is applied to physics teaching,it can help students to learn and consolidate the knowledge of fluid mechanics,electricity and solid mechanics.