摘要
阐述利用电阻分压原理实现自动电阻测量的设计思想和系统实现。通过场效应管电阻测量电路采样的电压,经高速A/D转换器MAX187和微控制器STC12C5A08AD处理后在12864液晶上实时显示被测阻值。系统具有4档量程,可实现"自动与手动测量转换、电阻的筛选、自动测量和显示电位器阻值随旋转角度变化曲线"等功能,用户界面友好,操作简单。
This paper describes the basic idea and implementation about achieving resistor-divider principle of autonmtic resistance measurement.Voltage is sampled by the FET resistance measurement circuit and processed by high-speed A/D converter MAX187 and microcontroUer STC12C5A08AD and measured resistance is displayed on the LCD 12864.System has 4 ranges, can achieve ＂automatic and manual measurement conversion, resistance selection, automatic measurement and display the curve of changed potentiometer＂ and etc. user-friendly interface, simple operation.
出处
《自动化与仪器仪表》
2012年第2期89-90,共2页
Automation & Instrumentation
基金
甘肃省高等学校研究生导师科研项目计划资助(0914-03)
兰州工业高等专科学校校级科研计划项目(10K-008)
