【设计】基于单片机的数据采集系统设计.doc

E毕业论文设计3基于单片机的数据采集系统设计 基于单片机的数据采集系统设计 随着信息领域各种技术的发展，在数据采集方面的技术也取得了长足的进步 采集数据的信息化在石油勘探、地震数据采集领域已经得到随着测控技术的迅猛 发展，以嵌入式计算机为核心的数据采集系统己经在测控领域中占到了统治地 位。数据采集系统是将现场采集到的数据进行处理、传输、显示、存储等操作。 数据采集系统的主要功能是把模拟信号变成数字信号，并进行分析、处理、存储 和显示。Abstract Along with the development of information field various technologies, the technology in the aspect of data collection has also gotten rapid advance, gather the informative process of data is now society develop the direction of main stream. Various fields have used data collection , in petroleum exploration and seismic data collection field have gotten application. As measuring to control technical swift development, with embedded computer for key data collection system Ji go through in measure to control field in have taken dominance position. Data collection system is to carry out the data that the collection on-the-spot goes to to handle，transmits and shows ， stock etc. operation. The major function of data collection system is simulated signal become digital signal, and analyse handling , stock and show. Domestic size many companies have developed data col lection ware and the product that blocks and so on , this makes the digitlization of information have offered imum convenience. This graduated design program, data collection ware produce is the only flat machine of 89 C51 that uses the company of ATMEL with AD0809 chip do a collection simulated voltage signal, conversion number word signal passes string mouth again by only flat machine to dispatch to the handling of personal computer, additionally, 3 number pipe LEDs show the digital information of collection. Keyword: Only flat machine、 Data is gathered、 Handle 目录 1 第一章数据采集器简介 5 1.1数据采集器概述 5 1.2目前的数据采集5 铅笔和纸5 表记录仪6 PC机插件卡片 6 集器 6 1.3数据采集的选择及应用7 第二章开发环境8 1画图工具Protel99软件 8 2编程工具KEIL C51 9 3烧写器 11 第三章设计过程12 1系统功能及结构简介12 3.2硬件芯片选择及功能简介13 AT89C51 芯片 13 ADC0908 芯片 14 74LS74 芯片 16 232芯片17 74LS244 芯片 18 3.3原理介绍18 3.4软件设计21 3.5 PC机上数据接收软件制作22 3.6调试过程26 6系统精度28 第四章总结29 第五章致谢 30 附录一 31 附录二外文