基于单片机的温室温湿度控制系统的设计 毕业论文最终版含全部源程序

天津**大学

毕业设计（论文）

基于单片机的温室温湿度控制系统的设计

姓名

学院电子与信息工程学院

专业电子信息工程

指导教师

职称

2014 年6 月 4 日

天津**大学毕业设计（论文）任务书

院长教研室主任指导教师

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（设计类）

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摘要

在快速发展的现代农业生产中，许许多多的、健康的农产品都来自于大棚温室栽培作物。温室大棚的应用已经越来越广泛,它可以为人类创造很大的经济价值和良好的社会效益。传统的温室温湿度控制是完全靠人工来进行控制和测量的。不仅费时费力，而且效率低、效果差。现如今，在温室大棚中，智能的控制系统将直接影响到农作物的产量以及生长情况等等。近些年来，各种各样的单片机和传感器迅速发展，因此我们可以用这些来使温室智能控制系统更加完善。本次设计是以STC89C52单片机为主控芯片，结合DHT11数字温湿度传感器，12864智能液晶显示屏等设计了一个结构简单并且容易操作的温室温湿度控制系统。我们可以通过编程来实现对温室温湿度的智能控制。当温室内的温度过高时，蜂鸣器报警，继电器工作，控制空调来进行降温；反之，则开启空调进行升温。对于湿度的控制亦是如此。通过加湿和干燥进行控制。相对于其他普通的温室智能系统，此设计具有价格低，性能优，安全性高，稳定性强等诸多优点。通过此系统，对蔬菜大棚内的温湿度进行可靠地、有效地控制与检测，从而保证大棚内的农作物在最佳的温湿度条件下生长，提高质量和产量，以达到我们想要的结果。

关键词：单片机STC89C52；矩阵键盘；温湿度传感器；12864液晶屏显示；继电器

ABSTRACT

In the rapid development of modern agricultural production, many healthy agricultural products come from the cultivation of crops in hothouses. Hothouses applications have become increasingly widespread. It can create great economic value and social benefits for humans. Traditional greenhouse Temperature and Humidity Control System is entirely by manual control and measurement. Not only time-consuming, but also inefficient and ineffective. Now, in the hothouse, the intelligent control system will directly affect crop yields, growth and so on. In recent years ,a variety of microcontroller and sensor developed rapidly, so we can use them to make more perfect greenhouse intelligent control system. The design, which is based on STC89C52 microcontroller as the master chip, combined with DHT11 digital temperature and humidity sensors, 12864 Intelligent LCD screen and so on, has a simple structure, and the greenhouse temperature and humidity control system is easy to operate . We can program to achieve the intelligent control of greenhouse temperature and humidity. When the temperature in the greenhouse is too high , the buzzer alarm, and the relay begin to work to control air conditioning for heating ; contrary, the air conditioning is for cooling. The same applies to the humidity, controlled by humidifying and drying. Compared to other common greenhouse intelligent systems, this design has a low price, excellent performance, high security, stability , and many other advantages. In this control system of the greenhouse temperature and humidity vegetables reliably and efficiently are controlled and tested to ensure the growing of crop s under proper temperature and humidity conditions, where improving quality and productivity is easy, in order to achieve the results we want.

Key words：SCM STC89C52；keyboard；temperature and humidity sensors；12864 LCD display；relay