基于51单片机红外迎宾及人数检测报警系统.docx

摘要

红外感应式门铃如今常用于店铺门口用于迎接顾客。它可依据顾客

的进出状况作出有所差别的反应。主要研究了红外感应技术在我们日常

生活中的应用，即感应式门铃。通过对它的研究，学会红外接近开关的

原理、电路设计制作流程以及常用元器件的应用情况。设计研究结果表

明:本文叙述的电路设计能达到预期所想，当人进入时，扬声器立即发出

问候语，而离开则提示有所区别的问候语，增加了时钟及 DS18B20 温度

检测，可以实时查看当前时间及温度，并且当店内人数过多的时候，通

过 SIM800C 模块把店内的信息反馈给店长。

Infrared doorbells are now commonly used at shop doors to greet

customers. It can make a difference according to the situation of customers in

and out. This paper mainly studies the application of infrared induction

technology in our daily life, namely the induction doorbell. Through the

study of it, learn the principle of infrared proximity switch, circuit design and

production process and the application of common components. Design

research results show that the circuit design of this paper can achieve

Key words:infrared proximity switch WT588 voice module infrared

induction doorbell

目录

第一章绪论 .....................................................................................................1

1.1 设计研究的背景和意义.....................................................................1

1.2 国内外现状.........................................................................................1

1.3 课题研究的主要内容.........................................................................2

第二章硬件设计 .............................................................................................3

2.4 LCD1602 液晶简介.............................................................................6

2.4.1 字符型液晶显示模块特性....................................................6

2.4.2 1602 液晶模块内部的控制指令............................................7

2.4.3 读操作时序、写操作时序....................................................7

2.4.4 液晶显示器电路图................................................................8

2.5 按键电路简介.....................................................................................8

2.5.1 按键部分电路图....................................................................8

2.6 DS18B20 数字温度传感器模块.........................................................9

2.6.1 性能� ....................................................................................9

2.6.2 DS18B20 外形.......................................................................9

2.7.4 三线串口控制的时序..........................................................11

2.7.5 语音芯片模块电路原理图..................................................12

2.8 时钟芯片模块....................................................................................12

2.8.1 时钟芯片引脚介绍..............................................................12

2.8.2 DS1302 读写时序 ................................................................13

2.8.3 控制命令字..........................................................................13

2.8.4 时钟芯片模块电路原理图..................................................13

2.9 E1-D80NK 漫反射式红外光电开关 ................................................14

2.9.1 漫反射式红外光电开关实物图..........................................14

2.9.2 工作原理..............................................................................14

3.2 液晶显示流程图...............................................................................16

3.3 按键处理流程图...............................................................................17

第四章系统测试 ...........................................................................................19

4.1 电路调试...........................................................................................19

4.2 LCD1602 液晶显示器测试...............................................................19

4.3 收短信功能模块测试.......................................................................20

附录一 原理图........................................................................................24