基于单片机的电脑机箱风扇温控系统的设计讲述.doc

2015届毕业设计说明书 基于单片机的电脑机箱风扇温控系统 院 、 部： 电气与信息工程学院 学生姓名： 朱杭亮 指导教师： 龙卓珉 职称 讲师 专 业： 自动化 班 级： 自本 1103 完成时间： 2015年6月 摘 要 当今市面上所使用的电脑机箱散热方式基本是使用散热风扇，但是存在的不足也是可见的，刚开始一般不会看出什么问题，但是用久了明显会感觉到风扇发出的噪音特别影响用户的体验，还有高耗电量也有违绿色环保概念，这成为了一个令人费解的问题。很多有创新头脑的人们经过研究比较，发明了液冷散热和液氮散热，它们都是利用元素的特性来降低机箱内部空气的温度，这个方法虽然看似可行，但毕竟不适用于全部人，因为资源的不足以及高成本是个大问题。如何解决散热问题已经成为当务之急。 该设计拟使用AT89S52芯片作为主控芯片设计一个智能控制的电脑机箱风扇温控系统，能够根据机箱内温度的改变控制风扇以不同速度运转，并通过LCD液晶显示屏显示温度、转速和时间，系统优化方面用到了复位电路，看门狗电路以及报警电路，系统还预留了很多可扩展口。通过Proteus仿真该系统能够实现各项功能。 关键词：单片机；风扇；看门狗 ABSTRACT On the market today,the computer case cooling way we used is basically using cooling fan, but the deficiencies are also visible, generally do not see any problems at first, but as time goes we can feel the noise from fan particularly affect the user experience,and there are high power consumption also works against the green environmental protection concept, it has become a puzzling problem. A lot of people who have innovative mind compered after study, invented the liquid-cooled heat and liquid nitrogen cooling, they are all useing the characteristics of the element to reduce the case of internal air temperature, this method looks plausible, but after all is not applicable to all people, because of the lack of resources and high cost. How to solve the cooling problem has become a top priority. The design intends to use AT89S52 chip as the main control chip to design a computer case fan temperature control system of intelligent control, according to the change of temperature inside the case to control fan running at different speed, and shows the temperature, speed, and time through the LCD display, in the aspect of system optimization,it used reset circuit, watchdog circuit and alarm circuit, system also set aside a lot of extensible mouthes. The system can realize the function through the Proteus simulation. Key words