摘要
设计了一种基于电容传感器的液体密度测量电路,介绍了设计思想和各部分的工作原理,给出了总的测量电路图.利用本电路测量相对误差在0.5%以内,具有测量准确度高、测量速度快、数字显示直读、使用简单的特点.
A sensor-based liquid density measurement circuit is designed in this paper, the design concept and part of the working principle are introduced, and the circuit diagram is given. The relative error of the measurement circuit is less than 0. 5% , and the present circuit has high accuracy and fast speed of measurement. The figures can be read directly and used simply.
出处
《大学物理》
北大核心
2009年第2期34-37,共4页
College Physics
基金
陕西省教育厅专项科研计划资助项目(04JK311)
延安大学科研计划重点资助项目(YK2005-058)
关键词
电容式传感器
液体密度
测量电路
设计
capacitive sensor
liquid density
measurement circuit
design