基于单片机的自动门控系统设计

摘要：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“微机控制自动门系统”的研究和设计，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，LED点阵显示芯片及步进电机为核心的系统。
 本设计主要应用AT89S52作为控制核心，LCD液晶显示、步进电机、压力传感器、电位器相结合的系统。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，性价比较高等特点，具有一定的使用和参考价值。
关键词：单片机；自动门控制；A/D模数转换；传感器 [资料来源：www.THINK58.com]

The design of automatic door system based on signal-chip
Abstract ：Progress of with the development of 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 life, will quicken the development of science and technology. Through the research and design to the thing that "the computer controls the system of automatically-controlled door”, 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, LED lattice show chip and walk into electrical machinery central systems.

 Is it use AT89C51 as core of controlling , LED lattice show chip , walk into electrical machinery , pressure sensor , electric potential system that device 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 has certain use and reference value.
Key words: One-chip computer；The automatically-controlled door controlling； A/D modulus changing；Sensor
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目   录
1 课题研究的可行性 1
2 课题研究的意义和目的 2
3 课题的功能概述 3
4 硬件芯片介绍 4
4.1 AT89C52 4
4.2 1602LCD 8
4.3 晶振 11
4.4 键盘扫描介绍 12
4.5 热释电型红外探测器 13
4.6 74LS04 19
4.7 系统硬件设施 20
5 总体设计框图 21
6 系统工作原理 22
6.1 工作模式 22
6.2 液晶工作模式 23
6.3 流程图 25
6.4 仿真部分 26
7 总结 27
参考文献 28
附录 29
谢  辞 33 [资料来源：www.THINK58.com]

[来源：http://think58.com]

[来源：http://www.think58.com]