现如今自动化、信息化程度越来越高，单片机的应用领域也就越来越广，成为人们生活不可或缺的一部分。随着社会的发展、科技的进步以及人们生活水平的逐步提高，各种方便于生活的自动控制系统开始进入了人们的生活，以单片机为核心的自动门系统就是其中之一。同时也标志了自动控制领域成为了数字化时代的一员。它实用性强，功能齐全，技术先进，使人们相信这是科技进步的成果。它更让人类懂得，数字时代的发展将改变人类的生活，将加快科学技术的发展。

通过对“自动门单片机控制系统”的研究和设计，我精心撰写了微机控制自动门系统论文。本论文着重阐述了以单片机为主体，直流电机、转速测量为核心的系统。

本设计主要应用8051作为控制核心，直流电机、红外传感器、磁开关结合的系统。充分发挥了单片机的性能。其优点硬件电路简单，软件功能完善，控制系统可靠，xxx较高等特点，具有一定的使用和参考价值。

关键词　 单片机  自动门  直流电机  红外传感器  转速测量

As it becomes more and more automatic and informational nowadays, the application of microcontroller also becomes more and more extensively.  Progress of with the development of the society, science and technology and gradual improvement of people's living standard, various kinds of help automatic control system in life begin to enter people's life, the system of automatically-controlled door taking one-chip computer as the core is one of them. Indicate too that the automatic controlled field became a member in digitized era at the same time. Its practicability is strong, multiple functional, modern techniques, make people believe this is an achievement of scientific and technological progress. It lets the mankind understand even more, the development in digital era will change human’s life, will quicken the development of science and technology.

Through the research and design to the thing that "the system of single chip controlled auto-door", I have written the computer and controlled the systematic thesis of automatically controlled door meticulously. Thesis this is it rely mainly on one-chip computer to explain emphatically, DC motor and the measure of rotate speed central systems.

It is uses 8051 as core of controlling, the DC motor, infrared sensor and electromagnetic switch combine together mainly to design originally. Give full play to the performance of the one-chip computer. Its advantage hardware circuit is simple, the software is with perfect function, the control system is reliable, higher characteristic of the sex price, and it has certain use and reference value.

Keywords　Microcontroller  Auto-door   DC motor   Infrared sensor 

Rotate speed- measure