摘要
针对在微小电容的检测中,传统模拟电路存在设计复杂,电容测量范围小等诸多局限性这一问题,设计了一种微小电容检测系统。该系统硬件主要由电容测量芯片Pcap01、单片机STM32F103C8T6最小系统、供电电路以及LCD液晶显示屏构成。系统软件包括下位机的C程序,实现了电容数据采集、Pcap01-AD与单片机之间的通信以及数据转换。实验结果表明,该系统结构简单,精度高,误差小,稳定性好,抗干扰能力强。能方便的应用于需要微小电容检测的场合,如电容式液位传感器等。
In the micro capacitance detection, the traditional analog circuits exist many limitations, such as the complex design, small capacitance measurement range. To solve these problems, a micro capacitance detection system was designed. This system consists of capacitance measuring chip Pcap01, the STM32F103CST6 minimum system, the pow- er supply circuit and the LCD display. The software of the system, including the C program of lower computer, realizes the function of collecting the capacitance data, communicating between Pcap01-AD and the MCU and converse the data. Experimental results show that the system has simple structure, high precision, small error, good stability, and strong anti-interference ability . It can be easily applied to the situations that require micro capacitive sensing, such as capacitive level sensors, etc.
出处
《国外电子测量技术》
2015年第12期87-90,共4页
Foreign Electronic Measurement Technology
作者简介
侯亚宾，1990年出生，在读硕士研究生。主要研究方向为现代传感技术及仪器。E-mail：hyb0005426@126．com
