基于STM32的电容式角度检测系统

Capacitance Angle Detection System Based On STM32

该文介绍了一种电容式角度测量装置,利用平行板电容器原理,当角度发生变化时,平行板电容的相对面积变化,导致电容发生变化。基于Pcap01芯片测量电容信号,在STM32F405芯片上实现电容角度转换,实现角度0~90度测量,给出了硬件电路和软件结构设计,使用Labview作为上位机界面实时检测和记录角度。实验表明,达到了较高的精确度和较小的测量误差。

This paper presents a capacitance angle measuring device,using the parallel board capacitor principle,when the angle changes,the relative area of the parallel plate capacitance changes,resulting in the capacitance changes.The measurement of capacitance signal based on Pcap01 chip,realize the conversion from capacitance to angle in the STM32F405 chip to realize the angle measurement from 0 to 90.The design of hardware circuit and software structure is given.Labview is used to detect and record angle of PC inter- face,Experiments show that high accuracy and small measurement error are achieved.