摘要
工业生产中,测量电阻、电感和电容器产品是十分重要的生产环节。针对传统测量仪通道单一、效率较低、测量范围有限、设备粗大等缺点,设计了一款能分辨并测量电阻、电容、电感的多用多通道测量仪。系统利用STM32F103C8T6处理器通过I2C接口控制以阻抗转换芯片AD5933为核心的阻抗测量模块进行测量,通过OLED显示屏显示结果。为减小测量误差,采用自校准单元进行系统自校正。性能测试结果表明,测量仪的测量结果满足平时基本测量需求,较为稳定和可靠,且操作简单。此外,还能测量贴片电阻和电容以及阻抗较小的万用表无法测量的电阻电容,且实现电容实时频率校准,在屏幕上同步显示频率响应曲线。
A multi-purpose and multi-channel impedance meter,which can be used for measuring resistance,capacitance,inductance and determine its type,is designed in this paper.This meter uses STM32F103C8T6 to control impedance measurement chip AD5933 by I^2C interface for measurement and displays results on OLED screen.To minimize measurement errors,this paper uses self-calibration unit before measurement.The results of our tests show that the meter has stable and reliable performance and satisfies with primary demands with easy operation.Besides,chip fixed resistors and chip fixed capacitors which can not be measured by multimeters,can be measured by this meter.
出处
《工业控制计算机》
2019年第3期75-77,80,共4页
Industrial Control Computer
