(完整版)自动干手器电路的设计毕业设计.doc

自动干手器电路的设计摘要：自动干手器是一种高档的卫生洁具，可以取代毛巾、纸巾，对手进行干燥具有节能、环保、人性化的优点，被广泛应用于宾馆酒店、机场车站、体育场馆等公共场所的洗手间现在市场上购买的自动干手器的控制电路大多使用 555 时基电路和数字集成电路由于分立元件较多，电磁干扰较强，工作不稳定，人性化方面不够完善电路采用 52 单片机进行控制，克服了以上缺点用 52 单片机和红外感应设计的干手器具有能够自动感应人手的靠近和离开，通过硬件设计增减每次工作时间，用数码管显示干手器设定的工作时间和倒计时时间，用开关选择输出冷风或热风，以满足不同温度天气的使用电路在方案上有设计的可行性， 也具有一定的市场前景对自己而言，该课题的研究可以把大学所学的专业知识应用到实际的电路设计中去，使自己的专业知识得到进一步的巩固关键词： 单片机；红外感应；干手器the output selector switch can use cold orInfra-red automaticAbstract:Automatic replace the towels, paper towels, opponents of the drying.Energy saving, environmental protection, , it is widely used in the market to buy theautomatic aspects is inadequate. The design uses a microcontroller to control circuit52, to overcome the above disadvantages. 52 microcontroller and infrared sensorswith the design of dry add and subtract each time) digital display can be used to setthe time for dry the dryer The work is displayed when the countdown time, selectin the schemedesign of feasibility,also market prospect. For myself, this topic research can put a collegemajor knowledge applied to practical circuit design, make myself of theprofessional knowledge to further consolidate.Key words: MCU; Infrared sensing; Airing implement目 录第 1 章 绪 论.................................................................................................................51.1课题背景 ................................................................................................................51.2课题研究的目的和意义 ........................................................................................51.3课题研究内容 ........................................................................................................51.4 工作原理 ...............................................................................错误！未定义书签。

第 2 章 方案论证 .............................................................................................................72.1方案一 ....................................................................................................................72.2方案二 ....................................................................................................................72.3系统方案对比论证 ................................................................................................7第 3 章 硬件电路 ....................................................93.1硬件电路的设计原理 ..........................................................错误！未定义书签。

3.2硬件设计的系统框图 ............................................................................................93.3硬件电路的芯片介绍 ............................................................................................93.3.1单片机 AT89S52 介绍....................................................................................93.3.2红外对管 ........................................................................................................123.3.3数码管 ............................................................................................................133.3.4 继电器 .............................................................................................................153.4 自动干手器的基本组成 ......................................................................................153.4.1晶振电路 ........................................................................................................153.4.2复位电路 ........................................................................................................163.4.3数码管显示电路 ............................................................................................163.4.4继电器电路 ....................................................................................................163.4.5红外感应电路 ................................................................................................173.4.6电吹风电路 ....................................................................................................17第 4 章 软件设计 ...........................................................................................................184.1 软件设计介绍 ......................................................................错误！未定义书签。

4.2 主程序的设计 ......................................................................................................184.3 定时中断程序的设计 ..........................................................................................184.3.1 实现功能 ........................................................................................................184.3.2 中断流程图 .....................................................................................................184.3.3 关键技术 ........................................................................................................18第 5 章 系统制作及调试 ..........。