论文总字数：47233字

摘 要

随着现代信息科学技术的迅猛发展，健康安全、舒适便捷的生活成为人们的迫切需要。生活质量的提高和生活节奏的加快使得家庭安全隐患也在不断增多，传统的安保防御措施已经无法适应现代社会的需求，因此应运而生了各种智能化的报警器，其中多防区远程防盗报警器在智能家居监控系统中占据越来越重要的地位。

本文设计是基于单片机STC89C52的4个防区的无线GSM防盗报警系统。该系统由1个主机和4个从机构成。系统的主机和从机都是采用单片机STC89C52作为核心控制芯片，从机的门磁开关和人体红外传感器采集相关信号，nRF24L01无线传输模块将采集到的信号发送给主机，主机处理后启动蜂鸣器报警并控制GSM模块将报警信息发到用户手机，同时在LCD显示模块中显示时间和防区号。本设计的远程报警感应距离是室内15米。从机中使用其他传感器，该系统也可以改装成为其他功能的报警器，如火灾，烟雾，温湿度传感器等。

本文设计的多防区远程报警系统通过了软硬件验收，工作正常，并且实现了预期的功能。

关键词：STC89C52单片机 GSM模块 红外感应 门磁 nRF24L01

Design of Multi-zone Remote Alarm System

Abstract

With the rapid development of modern information science and technology, people have an urgent need for a healthy, safe, comfortable and convenient life. Security threats in every household are also increasing with the improvement of people’s living quality and rapid pace of life. As a result, traditional security measures will no longer meet the needs of modern society. In this case, a variety of intelligent alarm has emerged. Particularly, multi-zone remote burglar alarm plays a more important role in smart home monitoring system.

In this paper，we propose a design of a four-zone wireless GSM burglar alarm system based on SCM STC89C52. The system consists of a host and four slaves which all have based on SCM STC89C52 as the master chip. Human infrared sensor module and magnetic switches of slave collect relevant signals, nRF24L01 wireless transmission module then send the collected signals to the host. After the processing of the signals by the host, it will subsequently start the buzzer alarm and control GSM module to send alarm message to the user’s mobile phone.At the same time, time and zone number are also displayed on LCD. The remote sensing distance of this design is 15 meters indoors. When some other kind of sensor is used in the slave, the system can also be adapted for other alarm functions, such as fire, smoke, temperature and humidity sensors.

The multi-zone remote alarm system designed in this paper has been accepted software and hardware. It can work normally, and it has achieved expected goals of the system.

Key Words：STC89C52 SCM; GSM module; Infrared sensor; Magnetic; nRF24L01

目录

摘要 I

ABSTRACT II

第一章 绪论 1

1.1课题研究背景及意义 1

1.2 国内外的发展 2

1.3 研究内容 3

第二章 系统总体方案设计 4

2.1 系统总体设计思路 4

2.1.1 系统主机框图 4

2.1.2 系统从机框图 4

2.2 系统硬件选型 5

2.2.1 单片机的选择及介绍 5

2.2.2 红外传感器的选择及介绍 8

2.2.3 门磁开关MC-18 10

2.2.4 无线射频模块nRF24L01 10

2.2.5 时钟芯片DS1302 12

2.2.6 液晶显示LCD1602 13

2.2.7 GSM模块 14

第三章 硬件电路设计 17

3.1 单片机最小系统 17

3.1.1 晶振电路 17

3.1.2 复位电路 18

3.2电源电路 18

3.2.1主电源电路 19

3.2.2 5V转3.3V电源电路 19

3.3 蜂鸣器报警电路 20

3.4 传感器接口电路 21

3.5 液晶显示接口电路 21

3.6 无线射频模块接口电路 22

3.7 实时时钟电路 23

3.8 GSM模块接口电路 23

3.9 硬件完整原理图 24

第四章 系统软件设计 25

4.1 Keil C51 uVision4开发环境 25

4.1.1 Keil C51 uVision4软件介绍 25

4.1.2 Keil C51工程创建应用 25

4.2 主程序流程图 29

4.2.1 主机程序流程图 29

4.2.2 从机程序流程图 30

4.3 实时时钟程序设计 31

4.4 液晶显示程序设计 33

4.5 短信发送设计 34

4.5.1 PDU模式发送短信方法 34

4.5.2 短信发送流程图 35

第五章 软硬件调试及结果分析 37

5.1 ISP在线下载操作 37

5.2系统调试 39

5.2.1 硬件调试 40

5.2.2 软件调试 40

5.2.3 系统软硬件联调 41

5.3结果分析 43

总结与展望 46

参考文献 48

致谢 50

附录一 原理图 51

附录二 硬件PCB图 53

附录三 元器件清单 54

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