LIANG Sheng1, HUANG Zhao-hong1, LI Xin-hui2. Design of contactless capacitance angle sensor based on AD7745[J]. 2007, (12): 94-96. DOI: 10.13873/j.1000-97872007.12.031.
基于AD7745的无接触电容式角度传感器的设计
摘要
设计了一种完全无接触的电容式角度传感器
结构简单
电极引出线连接可靠
输出线性度高;采用AD7745结合单片机采集处理电容信号
外围电路简洁
应用方便。软件设计通过对AD7745的实时调节
在0°
9
0°转动时
线性输出为5mV
4
.95 V
角度可准确测量到5′。
Abstract
A contactless capacitance angle sensor is designed.It has a simple structure and a better linearity.AD7745 and micro control unit are used to process the capacitance signal.It makes the circuit simple and easy to application.The output voltage varies from 5 mV to 4.95 V as the angle changes from 0° to 90°.The sensor precision is up to 5′.