题目：基于单片机数据采集系统设计
系（部）：电子科学与技术系
专业班：电子科技xxxxxx班
姓名：xxxxx
学号：xxxx
指导教师：xxxxx
2007 年 4 月 21 日
毕业设计（论文）开题报告
基于单片机数据采集系统设计
The design of data collection system base on singlechip
摘要
在计算机广泛应用的今天，数据采集的重要性是十分显著的。它是计算机与外部物理世界连接的桥梁。它在现代信息领域发挥着重要作用，是信息产品不可或缺的重要组成部分。因此选择基于单片机数据采集系统设计是很有意义也是很有必要的。
随着计算机技术的飞速发展和普及，数据采集系统也迅速地得到应用。在生产过程中，应用这一系统可对生产现场的工艺参数进行采集，监视和记录，为提高产品质量，降低成本提供信息和手段。在科学研究中，应用数据采集系统可获得大量的动态信息，是研究瞬间物理过程的有力工具，也是获取科学奥秘的重要手段之一。总之，不论在哪个应用领域中，数据采集与处理越及时，工作效率就越高，取得的经济效益也越高。
本设计采用ATMEGA16单片机作为数据采集系统的控制核心，系统分为数据采集模块、A/D转换模块、系统控制模块、键盘模块、显示模块等几部分。系统通过ATMEGA16对多通道的数据流进行控制，经过处理后在LCD12864上进行显示。本设计在此基础上设计了系统的总体方案，最后通过硬件和软件实现了各个功能模块。相关部分附有硬件电路图，程序流程图。
经实验证明，这套系统软硬件设计合理，各项性能良好，经过系统扩展与升级，可以有效的满足各种数据采集的需要。
关键词：ATMEGA16；数据采集；A/D转换；LCD12864
Abstract
Widely used in computers today, the importance of data collection is very significant. It is a bridge connecting the computer and the outside physical world. It plays an important role in the modern field of information is an important and indispensable component of information products. MCU selected based data acquisition system is very much necessary in the design is of great significance.
With the rapid development of computer technology and penetration, rapid data acquisition system has been applied. In the production process, the system can be applied to the production process parameters for site acquisition, monitoring and recording, To improve product quality, reduce costs and provide information means. In scientific research, application of dynamic data acquisition system can obtain a lot of information is a powerful tool to study physical processes instant. one of the important means of gaining scientific mystery. In short, regardless of which application in the field, more timely data acquisition and processing, the higher the efficiency. achieve higher economic efficiency.
The design of the data acquisition system used as a control ATMEGA16 MCU core D conversion system is divided into modules, the system control module, keyboard module, module and other parts. ATMEGA16 of multi-channel systems to control data flow, After being handled in LCD12864 on show. The design of the system based on the overall design, hardware and software by the end of each module. Some of related hardware circuit, flowchart.
The experiment proved that the system software and hardware design, good properties, through expansion and upgrading. can effectively meet the needs of data collection
Keywords：ATMEGA16；The data collect；A/DTransform；LCD12864
目录
摘要 (Ⅰ)
Abstract (Ⅱ)
第一章绪论 (1)
1.1 课题的背景及其意义 (1)
1.2 系统整体方案设想 (1)
1.2.1 系统硬件方案设想 (2)
1.2.2 系统软件方案设想 (2)
1.3 本设计要完成的任务 (2)
第二章方案的分析与论证 (4)
2.1主控系统分析与论证 (4)
2.2显示器件的选择 (12)
第三章系统的硬件结构设计 (14)
3.1外围输入电路 (14)
3.1.1音频输入电路 (14)
3.1.2光电池输入电路 (15)
3.1.3磁场输入电路 (16)
3.1.4电压输入电路 (17)
3.2串口电平转换电路 (18)
3.3键盘电路 (19)
