| 毕业设计 八路模拟信号输入显示系统 共42页，15830字 [摘要] 随着社会日益快速的发展，目前人们的生活节奏也越来越快。在现代检测技术中，高精度数字电压表常用于现场数据检测，八路模拟信号输入显示系统相当于一个数字电压表，而且这个系统功能强大，操作简便，价格便宜，使用起来简捷方便，倍受人们的欢迎。该系统将检测到的数据送到微计算机系统，完成计算、存储、控制和显示等功能。本文设计的八路模拟信号输入显示系统采用AT89C52单片机，ADC0809 A/D转换器，LED数码显示器作为核心器件，实现系统的硬件电路设计与软件编程。还可以方便地进行8路A/D转换量的测量。设计系统可以测量0-5V的8路输入电压，并在四位LED数码管上轮流显示。 [关键词] AT89C52单片机； A/D转换； 模拟信号 Digital Displaying Circuit System with 8 Roads Analog Signal [Abstract] With the fast development of the society, the live rhythm of people is more and quicker at present. In modern detection technology, high-precision digital voltage meter commonly used in the test data at the scene. Digital displaying circuit system with 8 roads analog signal being equal digital voltmeter, and such analog signal system is powerful, operation is simple and convenient , price is cheap , is put into use simple and direct People used to facilitate direct. It received cordially welcome of people. The system will detect the data measured will then be input into the micro-computer system to execute such functions like calculating, storing, controlling and displaying. The design of the digital voltmeter control system converter, LED digital display as a core device and the hardware design and software programming，while it can also easily carry out the duties of measuring A/D converted values from 8 routes and remote transfer of measuring data. Design System voltage inputs can be measured from 0 to 5 volt from 8 routes ranging. And demonstrated in turn on four LED nixietubes. [Key words] AT89C52SC computer；A/D conversion；Analogue signal 目录 0 引言-------------------------------------------------------------- 1 0.1 本设计的主要思想----------------------------------------------1 0.2 需要解决的的主要问题------------------------------------------ 1 1 设计的主要任务---------------------------------------------------- 2 1.1 系统硬件设计--------------------------------------------------2 1.2 单片机程序设计------------------------------------------------ 2 1.3 主要技术指标-------------------------------------------------- 2 2 方案论证---------------------------------------------------------- 3 3 系统硬件电路的设计------------------------------------------------ 4 3.1 八路模拟信号输入显示系统硬件电路设计------------------------- 4 3.2 AT89C52单片机的结构特点和结构框图---------------------------- 5 3.3 模数转换器芯片ADC0809的结构特点和结构框图------------------- 11 3.4 分频器的工作原理--------------------------------------------- 13 3.5 LED数码显示器----------------------------------------------- 13 4 系统软件设计----------------------------------------------------- 16 4.1 初始化程序--------------------------------------------------- 16 4.2 A/D转换子程序----------------------------------------------- 16 4.3 显示子程序-------------------------------------------------- 17 4.4 系统软件主程序---------------------------------------------- 17 结论---------------------------------------------------------------- 22 致谢语-------------------------------------------------------------- 23 参考文献------------------------------------------------------------ 24 附录一 英文译文----------------------------------------------------- 22 附录二 中文译文----------------------------------------------------- 36 |
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