基于P89LPC932单片机的夫兰克-赫兹实验仪的设计  

Design of Franck-Hertz instrument based on MCU P89LPC932

作　　者：邓玲娜[1] 饶利民[1] 黎定国[1] 

机构地区：[1]东华理工大学核工程技术学院,江西抚州344000

出　　处：《电子设计工程》2009年第12期41-42,共2页Electronic Design Engineering

基　　金：东华理工大学校长基金(DHXK0724)

摘　　要：提出一种以单片机P89LPC932为核心的夫兰克-赫兹实验仪设计方案,采用12位A/D转换器件TLC2543进行数模转换,由运放OPA128组成的放大电路放大电流Ip,采用数字电位器MAX5481和DS1844产生变化的UG1K、UG2K、UG2P、UF电压,还配有64 K字节E2PROM和伪USB接口。该仪器具有手工操作、自动操作以及和计算机联机操作等功能。A Franck-Hertz instrument is designed with a core IC of MCU P89LPC932.The analog-to-digital converter is 12- bit TLC2543 ,the current Ip is amplified by amplifying circuit which is composed by OPA128,and the variable voltages of UG1K, UG2K, UG2P, UF is produced by digital potentiometer MAX5481 and DS1844.The 64K bytes E2PROM and pseudo-USB interface are designed in the instrument, so the instrument has the functions of manual operating, automatic operating and operating by connecting with computer.

关 键 词：夫兰克-赫兹实验仪 P89LPC932 MAX5481 DS1844 OPA128 

分 类 号：TH73[机械工程—仪器科学与技术]