摘要
针对目前传统使用的阻抗测量仪通道少、精度低、操作复杂等诸多缺点,研制了一款测量阻抗范围0～10MΩ、支持USB总线的全自动多通道阻抗测量仪;系统采用STM32F103C8T6处理器为控制核心,高精度阻抗转换芯片AD5933为测量核心,通过上位机设置AD5933配置参数即可完成多通道的单频、多频自动化测量,阻抗数据经USB总线传输至上位机存储及图形方式显示;结果表明该测量仪电路集成度高,操作简单,而且测量相对误差小于1%,性能稳定可靠。
Aiming at the traditional impedance measurement instrument channel less, low precision, operation complex, and many other disadvantages. Developed a automatic multi--channel impedance meter measuring impedance range 0-- 10 MΩ, supported USB bus. System adopted STM32F103C8T6 processor as the control core , high precision impedance conversion chip AD5933 as measuring core. AD5933 through the PC configuration parameters can be set up multi--channel single--frequency, multi--frequency automated measurement. Imped- ance data through the USB bus transmitted to PC storage and graphics display. Results shows that the measuring instrument highly integrat- ed circuits, easy operation, and measuring the relative error is less than 1%, stable and reliable performance.
出处
《计算机测量与控制》
北大核心
2014年第5期1661-1663,共3页
Computer Measurement &Control
基金
华东交通大学研究生创新基金(YC 2012-X010)
