电容式传感器的测量转换电路的研究  

Research on measuring and converting Circuit of capacitive Sensor

作　　者：孙晓莉 Sun Xiaoli(Gansu Mechatronics Career Technical College,Tianshui Gansu,741001)

机构地区：[1]甘肃机电职业技术学院,甘肃天水741001

出　　处：《电子测试》2018年第13期35-35,37,共2页Electronic Test

摘　　要：电容式传感器的核心组成部分是电容器,电容器的电容值测量中电容量的变化都极小。目前的技术还很难直接记录和显示电容的变化。因此,电容式传感器转换电路都是将电容量的变化转换成和它之间成特定函数关系的电量(电压、电流、频率)的变化。The core component of a capacitive sensor is a capacitor. The change in the capacitance of a capacitor is very small. It is also difficult for current technology to directly record and display changes in capacitance. Therefore, the capacitive sensor conversion circuit converts the change in capacitance into a change in the amount of electricity（voltage, current, frequency） that is a specific functional relationship therewith.

关 键 词：电容式传感器 电桥 调频电路 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]