[电子设计精品] 数字存储示波器_毕业论文.doc

本科毕业设计论文
题目数字存储示波器
系别电气与信息工程
专业电子信息工程
班级电信xxx 学号
学生姓名电信103班
指导老师 xx xx xx
2011年1月
摘要
数字存储示波器是随着数字集成电路技术的发展而出现的新型智能化示波器,已经成为电子测量领域的基础测试仪器。其技术基础是数据采集,该技术可以应用于更广泛的数据采集产品中,具有深远的意义。
本文介绍了数字存储示波器的基本概念及原理,描述设计了一个简易的基于单片机的数字存储示波器的硬件和软件的实现过程,并通过调试实现了其功能和主要技术指标。
其硬件部分主要由单片机系统、输入调理电路、ADC转换器、存储器、按键和液晶显示组成。实现过程是以AT89S52 单片机为控制中心、62256为存储器,通过模数转换器,实时采样实现对输入信号的提取,并进行数字化的存储,显示及相应的按键功能。
软件部分由主程序和子程序模块组成,主要实现了A/D转换器的启动及对采样数据的存储,频率及幅值的计算,按键及液晶屏的控制。程序是在keil uVision的集成开发环境中用C语言写成,模块化的编程使得程序具有可读性和易于维护的特点。
最后,用protel 99SE设计并制作了数字示波器的印制电路板PCB。并完成了样机的制作和调试。在实验室里,进行了测试,结果表明系统达到设计要求。
关键词:数字存储示波器,单片机,ADC转换器,存储器,显示
ABSTRACT
Digital storage oscilloscope is a digital integrated circuit technology with the emergence of a new intelligent oscilloscope, has e the basis for the field of electronic measurement test equipment. The technology is based on data collection, the technology can be applied to a wider range of data acquisition products, has far-reaching significance.
This paper introduces the digital storage oscilloscope basic concept and principle, describe the design of a simple microcontroller-based digital storage oscilloscope hardware and software implementation process, and achieved through missioning function and the main technical indicators.
The hardware posed of MCU system, input conditioning circuitry, ADC converter, memory, keypad and LCD ponent. AT89S52 MCU implementation process is the control center, 62256 for the memory, through the ADC, real-time sampling to achieve the extraction of the input signal and for digital storage, display and the corresponding key function.
Software in part by the main program and subroutine modules, the main achievement of the A / D converter start and the sampling data storage, frequency and amplitude of the calculation, the control buttons and LCD screen. Program is in keil uVision integrated development environment written using C language, modular programming makes the program readable and easy to maintain.
Finally, protel