摘要：车库门自动开闭控制系统装置，它的特征在于车库内和车库外都装有主控制器，同时在车辆内安装有密码标识器。主控制器主要是由MCS-51系列单片机、315M无线收发模块、PT2262/PT2272编解码芯片、键盘、数码管组成。其中密码标识器由无线发射器与PT2262编码芯片组成。芯片PT2262与PT2272两者的地址编码必须满足是一样的。这个电路的作用是当车快到车库门时单片机收到车到了这个信号，按下按钮使PT2262电源端通电，通过无线发射模块，使编码器PT2262中的地址和数据发射到PT2272解码器中，同时解码器的输出端连接到单片机的P3.3，通过单片机判断传输的数据是否一致，如果解码器传输到单片机的数据完全正确，则车库内的电机将转动，打开车库门。电子密码锁的作用是可以通过输入正确的密码来控制电机启动打开车库门。52760
毕业论文关键词：电子密码锁，单片机，无线收发模块，PT2262/PT2272编解码芯片
Abstract：Closed control system for automatic garage door, it is characterized by the garage and garage are equipped with a main controller, and a passwordidentification device installed in the vehicle. The main controller is mainly composed of MCS-51 series single chip, 315M wireless transceiver module,PT2262/PT2272 codec chip, keyboard, digital tube. The password identificationdevice by the wireless transmitter and PT2262 encoding chip. The address codechip PT2262 and PT2272 must meet the same. The circuit when the role of thecar to the garage door the single-chip receives the car to the signal, press the button to make PT2262 power electricity, wireless transmission module, thePT2262 encoder in the address and data are transmitted to the PT2272 decoder,and the decoder output is connected to the microcontroller P3.3, judge whether data transmission consistent through the microcontroller, if the decoder is transmitted to the SCM data exactly, the motor will rotate in the garage, the garage door. Effect of electronic password lock can be through inputting the correct password to control motor starting to open the garage door
Keyword：Electronic password lock，microcontroller，wireless transceiver module，PT2262/PT2272 codec chip
目录
1 引言 4
1.1设计的背景 4
1.2 设计的目的 4
2 设计框架 4
2.1 设计的基本内容 4
2.2 设计并制作一个无线自动门电路 4
2.3 基本模块 5
3 系统的总体设计 5
3.1 单片机 5
3.1.1 单片机的说明及应用 5
3.1.2 单片机的结构特点 6
3.1.3 单片机的引脚配置 6
3.2 4×4 行列式扫描键盘 8
3.2.1 键盘工作原理 8
3.2.2 键盘工作方式 9
3.3 PT2262/PT2272编码解码芯片 10
3.3.1 PT2262/PT2272编码解码芯片原理 10
3.3.2 PT2262特点及应用 13
4 系统软硬件设计 14
4.1 主要电路图 14
4.1.1 单片机最小系统电路 14
4.1.2 键盘电路 14
4.1.3 数码管显示电路 51单片机自动门开闭控制系统设计+电路图:http://www.751com.cn/tongxin/lunwen_56766.html