摘  要：随着信息技术的发展，家庭安全隐患也越来越大。人们在家中遇到紧急情况时，如疾病突发需要寻求支援、盗贼入室偷窃、燃气不慎泄露、易燃易爆物品意外爆炸、火灾等，独自一人常常会由于行动不便、自救知识薄弱或者过度惊慌导致未及时发出报警的信息。因此，为了使家庭的安全防御能力更加稳固，设计一款稳定可靠的家庭智能紧急呼救系统是极具意义的。

本系统的主要控制中心选用了STC89C52。运用人体红外传感器监测某个特定范围的人体，利用一氧化碳传感器检测一氧化碳，烟雾传感器用于检测可燃气体，利用数字温度传感器监测房间温度，同时监测的数据会及时在液晶显示屏上显示。当任意一个传感器超过设置的报警上限值或者按下紧急呼救按键时，蜂鸣器会以声光形式报警，同时GSM模块以短信形式向用户手机发送求救信息。

经验证，本系统具备结构清晰、操作简单、可靠程度高等优点，应用前景及其可观。

该论文有图19幅，参考文献24篇。

关键词：STC89C52  传感器  液晶显示屏  GSM模块 紧急呼救按键 

Family Intelligent SOS System

Abstract：The hidden danger of family security is becoming bigger and bigger because the information technology is developing fastly and continually. People often causes untimely alarm information due to limitations, weak knowledge of self-rescue, or excessive panic when he or she is in an emergency at home alone such us disease help, burglaries, gas leaks, explosions of materials which are explosive or inflammable, fires, etc. So, it is important to design a stable and reliable family intelligent SOS system to make the security of the family more secure.

The main control center of this system is STC89C52. Infrared sensor of human body monitors the body within a certain range. Making use of smoke sensor to detect the combustible gas and carbon monoxide sensor detect the carbon monoxide. Digital temperature sensor can collect indoor temperature information and LCD1602 display screen will display various monitoring real-time data. The buzzer will make a audible and visual alarm and the GSM module will send the information for rescue to the user’s mobile phone when any sensor’s value exceeds the alarm’s upper limit which has been already set or when people press the SOS button.

It has been proved that this system has a clear structure, easy operation, high reliability, and many other advantages. It has comprehensive application foreground.

There are 19 diagrams and 24 references in this paper.

Key Words: STC89C52  sensor  LCD  GSM module  SOS button 

目  录

摘要 I

Abstract II

目录 III

1 绪论 1

1.1设计背景 1

1.2 目的及意义 1

1.3 主要工作内容 1

2 设计方案 3

2.1 功能介绍 3

2.2 设计思路 3

2.3 总体框图 4

2.4 设计实现方案 4

3 硬件设计 7

3.1 单片机最小系统电路设计 7

3.2 矩阵式键盘模板设计 7

3.3 防盗报警电路设计 8

3.4 防火灾报警电路设计 STC89C52单片机家庭智能紧急呼救系统设计:http://www.chuibin.com/tongxin/lunwen_205909.html