摘 要:随着人们生活水平的提高和生活节奏的加快，家庭安全隐患随之增多，传统的安防系统已无法满足人们需求，设计无线智能安防系统具有重要意义。

    本文设计了一款基于短信息平台的家庭安防系统，主要由主控模块、传感器模块（热释电红外传感器与MQ-2烟雾传感器）、GSM通信模块及其接口电路组成，设计中所使用的热释电红外传感器能以非接触形式检测出人体辐射的红外线，烟雾传感器可以检测烟雾的浓度，最终通过接口电路作为警告信息送给主控制器，主控制器通过分析和比较判断是否报警。94272

本文设计实现的家庭安防系统具有硬件结构简单、性价比高等优点。基本实现了系统的远程报警功能，达到了远程家庭安防监控目标，具有较好的应用前景。

毕业论文关 键 词:家庭安防，远程监控，单片机，GSM无线通信

Abstract:With the improvement of people's living standard and the improvement of the pace of life, the family security risks increase, the traditional security system has been unable to meet people's needs, the design of wireless intelligent security system is of great significance。

Based on short message platform, the home security system is designed in this paper。  It makes up with the main control module, sensor module (pyroelectric infrared sensor and MQ-2 smoke sensor）, GSM communication module, and interface circuit。 

Used in the design of the pyroelectric infrared sensor can detect the human body radiation in non-contact form of infrared, smoke sensors can detect the concentration of the smoke, and ultimately through the interface circuit as a warning to the main controller, main controller by stages and comparative judgment whether the police。

The design and realization of the family security system has the advantages of simple hardware structure and high cost performance。 The basic realization of the system's remote alarm function, to achieve a remote home security monitoring objectives, with good application prospects。

Key words: The family security，Remote monitoring，Wireless communication

目   录

1 绪论 1

1。1 课题背景及意义 1

1。2无线智能报警器的发展与现状 1

1。3 设计任务及要求 2

2 系统设计方案及原理 2

2。1 系统总体设计方案 2

2。2人体信号检测相关概述 3

2。3 烟雾信号检测相关概述 4

2。4 GSM通信技术相关概述 4

2。5 STC89C52单片机介绍 5

3 硬件电路设计 5

3。1 STC89C52单片机最小系统 5

3。2热释电红外传感器电路图 6

3。3 MQ-2半导体烟雾传感器电路图 7

3。4 GSM通信模块电路图 7

3。5 声光报警与指示灯模块 8

4。软件设计 9

4。1 程序语言及开发软件 9

4。2 总体及各模块流程图 9

4。3主要源程序代码 11

4。4 proteus软件仿真