【摘要】 采用AT90S 85 35单片机研制了一种智能弗兰克 -赫兹实验测量仪 ,能测量 1 0 -9～ 1 0 -12 A微电流 ,提供 0～ 5 0V线性程控稳压电源 ,模糊控温 ,图形液晶显示中英文和曲线 ,曲线数据打印 ,具有测量快、精度高、体积小、成本低、使用方便等优点 .本文介绍了该测量仪的硬件组成、典型电路工作原理、软件设计 ,分析了实验结果 .更多还原

【Abstract】 An intelligent measuring instrument for Franck Hertz experiment is developed by using AT90S 8535 microcontroller,which is able to measure weak current of 10 -9 A to 10 -12 A,provide a programmable linear regulated power supply from 0 to 50 V,fuzzily control temperature,display Chinese English characters and curves by graphic LCD,also print curves and data. This instrument has advantages of fast measurement,high precision,small size,low cost as well as easy operation.\;更多还原