基于单片机的空调温度控制系统设计-本科生论文.doc

毕业设计 题 目 基于单片机的空调温度控制系统设计 学生姓名 学 号 学 院 计算机与工程 指导教师 职 称 2013 年 5 月 原创性声明 作者签名： 日期： 年 月 日 论文版权使用授权书 本人了解有关保留、使用学位论文的规定，即：学校有权保留学位论文并根据国家或湖南省有关部门规定送交学位论文，允许学位论文被查阅和借阅；学校可以公布学位论文的全部或部分内容，可以采用复印、缩印或其它手段保存学位论文。 作者签名： 导师签名 日期： 年 月 日 温度、湿度、洁净度和空气流速等参数满足人舒适工艺过程的要求。 Pulse Width Modulation（简写为PWM）的方法控制光耦开关和继电器的闭合时间，完成对室温的调控。由于客观条件限制，本次设计以发光二极管LED（英语：Light-Emitting Diode，简称LED）的亮灭来模拟空调的置冷、置热、送风功能。其中红灯表示置热，蓝灯表示置冷，绿灯表示送风。该控制系统具有结构简单，操作灵活，使用方便等优点。 关键词 单片机；温度传感器；液晶显示器；矩阵键盘；继电器；Keil；Proteus ABSTRACT Air conditioning is the electrical device which can improve the indoor temperature, humidity, cleanliness and air velocity and other parameters. Its use in production and life is very extensive. Air conditioning can not only be used for cooling in the summer, but also can be used for heating in winter. Wind supplying it has also can improve indoor air velocity, provide people with fresh air. The emergence and development of air conditioning to meet the pursuit of a comfortable environment and production process requirements. This paper discusses the present situation and trend of development of air conditioning, Introduced a self-made air temperature control system based on MCU. The system is based on AT89C52 microcontroller as the core, the use of DS18B20 temperature sensor sampling temperature, And to the LCM1602 LCD monitor as the man-machine dialog window. Can detect and display the current temperature and setting temperature function. According to the comparison algorithm processor reservation. Closing time is simulated by the simulation of pulse width modulation Pulse Width Modulation(referred to as PWM) method to control the optical switch and relay. Complete control of the room temperature.. Because of the limitations of objective conditions. The design uses a light emitting diode LED (English: Light-Emitting Diode, referred to as LED) light out to simulate air conditioning cold、heat、wind.Th