摘要近年来，随着触摸屏技术的不断发展，一系列简单实用、可靠性高、稳定性好，抗干扰能力强的触摸屏应运而生。本设计课题使用的是北京迪文科技公司推出的DGUS触摸屏。DGUS触摸屏与传统HMI的区别在于：它内置操作系统以及CPU处理器，这样大幅度提升了其在工业现场运行的稳定性和可靠性；另外它质量可靠，开发比较容易，文护简单，而且能在此触摸屏基础上开发出各类产品。39777
本设计主要将DGUS触摸屏应用到在现代化农业中，利用智能监测取代人工管理，从而设计出基于DGUS触摸屏的蔬菜大棚监测系统。它可以测量大气温度、环境湿度和实现报警功能，并具有结构简单、性能可靠、实时监测等优点。
经过实际监测，DGUS 触摸屏实现了温度画面、环境湿度画面等数据的显示，并且具有良好的稳定性和可靠性。该系统将大大弥补人工监管蔬菜大棚的缺陷，可以科学合理地监测蔬菜大棚内蔬菜生长所需的参数，以便提供一个最适宜蔬菜生长的环境。
毕业论文关键词： 蔬菜大棚  STC89C52  DGUS触摸屏  传感器监测
Abstract
In recent years, with the constant development of touch screen technology, A series of simple, practical, high reliability, good stability and strong anti-interference capacity of touch screen arises at the historic moment. The article uses DGUS touch screen, provided by Beijing DWIN Technological Co Ltd. DGUS touch screen differs from traditional HMI in that it owns operating system and CPU processor, which greatly   enhances its stability and reliability in the industrial environment. Moreover, it provides the benefits of high quality, easy implementation, simple maintenance and develops a series of products on the hardware platform easily.
In this paper, we apply DGUS touch screen to modern agriculture and make use of intelligent monitoring instead of manual management to design Greenhouse monitoring and control system. It can measure air temperature, soil moisture and has simple structure, reliable performance, real-time monitoring , etc.
The System proves that DGUS touch screen displays the data of temperature and soil moisture and has the good stability and reliability. The system will greatly compensate for short comings in manual management and properly adjust required parameters of vegetables growth in greenhouses .It provides one of the most suitable for vegetables growth environment.
Key words: Greenhouses    STC89C52    DGUS touch screen                    sensors monitoring
目   录
摘  要    I
Abstract    II
1 绪论    1
1.1 课题研究背景及意义    1
1.2 国内外蔬菜大棚发展现状    1
1.3本论文的主要工作    2
2 系统总体设计方案    3
3系统硬件电路设计    4
3.1控制器    4
3.2温度采集及处理    8
3.3湿度采集及处理    10
3.4光照强度采集及处理    12
3.5 二氧化碳采集与处理    13
3.6 A/D转换模块    15
3.7 报警电路    16
3.8 电源电路    17
3.9 DGUS触摸屏    17
4 系统软件设计    23
4.1 系统软件设计思路    23
4.2 各流程图设计    24
4.3 各子程序设计    29
5结论    35
致  谢    36
参考文献    37
附录A    39
附录B    40 迪文DGUS屏的蔬菜大棚环境监测系统设计+电路图+程序:http://www.751com.cn/zidonghua/lunwen_40449.html