摘要：环境监控是环境保护及管理工作的重要基础，随着时代的变迁，经济的发展，越来越多的人开始关心所处环境质，对于环境的监控以及管理的效率提高、质量提高、加大透明度。通过信息化技术的应用，改变传统环境监测手段，运用通讯网络技术对环境的温度，湿度，光强度进行长期、连续、有效的监测，科学的监测、对于管理区域的环境，进行环境的监控，使环境管理工作变得更加科学，合理，适用。
本文设计了一种基于80C51单片机控制技术的农业环境监测与控制系统。系统分别由DS18B20数字温度传感器、DHT11湿度传感器和BH1750FVI来获取和控制温度、湿度、光照的信号，当所收集的数据，对比喻设定值，有所超越时能及时进行报警。用户可以通过LCD1602显示读出温度、湿度值。22217
系统作为单片机的测试系统，含采样电路设计、单片机接口电路设计、单片机电路设计、显示电路设计、报警电路设计等硬件电子电路。系统软件编程设计包括系统主程序设计、数据采集子程序设计、低温预警子程序设计、显示子程序设计等。该系统可实时测试、控制，且稳定性好、操作简单。
毕业论文关键词： 单片机；温度；湿度；报警；光照强度
Environmental monitoring system for agricultural research
Abstract: Environmental monitoring is an important basis for environmental protection and management, along with rapid economic development, more and more people began to care about the quality of their environment is good or bad, the requirements of environmental protection and management efficiency improvement, quality improvement, increase transparency. Through the application of information technology to change the traditional means of monitoring the environment, the use of new communications network technology to implement a long-term source of pollution and environmental quality, continuous and effective monitoring, scientifically accurate, comprehensive and efficient monitoring and management of environmental conditions in their areas of jurisdiction, so that environmental environmental management departments to achieve scientific monitoring, management, efficient and equitable new realm of law enforcement.
This paper presents a 80C51 MCU control technology in agricultural environmental monitoring and control system. Systems are the digital temperature sensor DS18B20, DHT11 humidity sensor and BH1750FVI to acquire and control the temperature, humidity, light signal when the temperature is below normal temperature greenhouse timely start alarm device. Users can read through the LCD1602 display temperature, humidity and light intensity.
System based on single chip test system, including sampling circuit design, microcontroller interface circuit design, microcontroller circuit design, circuit design, display, alarm and other hardware circuit design of electronic circuits. System design, including software programming system main design, data collection subroutine design, low warning subroutine design, display routine design. The system can be real-time test, control, and good stability, simple operation, and can be widely used in the relevant control part of agriculture, forestry and other sectors.
Key Words：SCM; temperature; humidity; temperature alarm; illumination intensity
目  录
1 绪论    1
1.1    课题的提出与意义    1
1.2    国内外研究现状    2
1.3    本课题设计思路及方法    3
1.4 论文的主要研究内容    3
2 系统总体设计    4
2.1 系统硬件总体设计    4
2.2系统软件总体设计    4
2.3 系统功能设计    6
2.4 单片机系统的特色    6 51单片机农用环境监控系统设计+源程序:http://www.youerw.com/zidonghua/lunwen_14745.html