摘要：伴随着社会的发展、科技的进步和人们生活水准的逐渐提升，自动门慢慢地在人们 的眼中多见起来，无论是宾馆、超市或者银行这类现代化建筑都配备有自动门。当然自动 门的实用性不容小觑，防风、美观、防尘、大方，同时也方便了人们的出入，即方便了管 理，同时又提升了安全性。实用性和功能性的齐全，加上技术的先进，人们开始相信这就 是科技进步的成果。它更让人类明白，数字时代终将到来，彻底改变人们的生活。控制系 统可以说是自动门的“心脏”，系统的优劣也是评判它制造水平的重要标准，同时自动门 控制系统也逐渐向大型化、复杂化和智能化的方向在不断发展。73213

本次设计是基于 51 单片机的自动门控制系统，将会使用到热释电传感器和光电传感器 这两种检测器。当检测到人体辐射的红外光线能量变化，将其转化为电信号，传给单片机。 直流电机则作为门的驱动装置。通过单片机控制直流电机，使门自动打开，当人进门后又 可以使门自动关闭。本课题将主要实现光电检测和基于 51 的单片机的控制系统。

毕业论文关键词：STC89C51 单片机,自动门,热释电传感器,光电距离传感器，直流电机

Abstract:With the development of the society, the progress of science and technology and the rising of people's living standard, automatic door slowly in the eyes of people see more, whether in the hotel, supermarket or bank such modern buildings are equipped with automatic door。

Automatic door is practical to be reckoned with, of course, windproof, beautiful, dustproof, easy, convenient access, people at the same time that is convenient for management, and enhance the security at the same time。 Practical and functional all ready, coupled with advanced technology, people began to believe that this is the result of scientific and technological progress。 It is more to understand people, digital era is coming, change people's lives。 "Heart" of the automatic door

control system, the merits of the system is also judged it manufacture level of important standard, at the same time automatic door control system also gradually to the large-scale, complicated and intelligent direction in development。

This design is based on 51 single chip microcomputer automatic door control system, will use the pyroelectric sensor and photoelectric sensor the two detectors。 When the detected human radiation of infrared light energy change, turning it into electrical signals, to the single chip microcomputer。 Dc motor as drive door。 Through single chip microcomputer control dc motor, automatic door open, when people after taking the door, can make the door shut automatically。 This topic will mainly realize the photoelectric detection and control system based on 51 single chip microcomputer。

Keywords: STC89C51 microcontroller, Automatic door, Pyroelectric sensor, Photoelectric sensor, DC motor

目录

1 绪论 3

1。1 课题研究的可行性 3

1。2 自动门的发展 3

1。3 电机自动控制系统的应用 4

1。4 课题研究要求 4

1。5 设计结构 4

2 系统硬件设计 5

2。1 设计电路的框图与电路原理