基于AT89S52的无线自动车库门

摘要：车库门全自动门控装置，其特征在于设有置于车库内和车库外的主控制器以及安装在车辆内的密码标识器，主控制器由单片机、315M无线接收器、解码器、键盘、数码管和红外对管组成，密码标识器由无线发射器和编码器。PT2262与PT2272地址和数据状态一模一样，PT2262电源端平时断开，若快到了车库门则按下按钮通电，编码器PT2262将地址和数据通过无线发射模块发射，同时无线接收器的输出端接解码器的输入端，解码器的输出端VT接单片机的P3.3，若数据完全正确则车库内的单片机启动电机开启车库门，同时红外对管感应次数计数，出车库门后门自动下降，也可以通过按钮屏蔽红外对管，实现手动放下车库门。之后取车时通过输入密码控制电机启动开门。
 关键词：电子密码锁；单片机；无线收发模块；PT2262/PT2272编解码芯片；红外对管；

[资料来源：http://THINK58.com]

The design of wireless auto garage door based on AT89S52
Abstract: The garage door full-automatic door control equip, its characteristic lie in establish to place at the garage inside with flank of of lord controller and install in the vehicle of password marking machine, lord controller from list slice machine, 315 M wireless receive a machine and shoot machine, coder and decoding machine, keyboard, figures tube with red outside to tube constitute, password marking machine from wireless receive a machine and shoot machine, coder and decoding machine.PT2262 and PT2272 address and data appearance look exactly alike, the PT2262 power supply carry peacetime break to open, if shall arrive soon a garage door to then press button to switch on electricity, the coder PT2262 pass address and data a wireless blast-off mold piece shoot, in the meantime wireless receive a machine of output carry to connect decoding machine of importation carry, decoding machine of output carry VT to connect list slice the P3.3 of the machine, if data complete exactitude inside garage of list slice machine start the electrical engineering open a garage door, red in the meantime outside to tube respond number of times to count, garage door back door auto descend, can also pass button to shield red outside to tube, realization move to let go of a garage door. Pass an importation a password control electrical engineering start while taking a car after [资料来源：www.THINK58.com]
Keyword: Electronics combination lock; List slice machine; The 315 M wireless receive and dispatch a mold piece;PT2262/PT2272 plait decoding chip; Red outside to the tube; [资料来源：http://THINK58.com]

目  录
1 引言 1
2 设计任务 2
2.1 设计并制作一个无线自动门电路 2
2.2 基本模块 2
3 系统的总体设计 3
3.1 单片机 3
3.1.1 单片机的说明及应用 3
3.1.2 单片机的结构特点 3
3.1.3 单片机的引脚配置 4
3.2 4×4行列式扫描键盘 7
3.2.1 键盘工作原理 7
3.2.2 键盘工作方式 8
3.3 PT2262/PT2272编码解码芯片 9
3.3.1 PT2262/PT2272编码解码芯片原理 9
3.3.2 PT2262特点及应用 11
4 系统软硬件设计 12
4.1 主要电路图 12
4.1.1 单片机最小系统电路 12
4.1.2 键盘电路 12
4.1.3 数码管显示电路 12
4.1.4 无线发射及编解码电路 13
4.1.5 蜂鸣器及继电器电路（见图4-5） 14
4.1.6 系统硬件总图（见图4-6） 15
4.2 软件设计流程图（见图4-7） 15 [资料来源：www.THINK58.com]
5 总结 17
参考文献 18
谢  辞 28 [资料来源：http://THINK58.com]