摘要目前，随着生活质量的提升，人们越来越多的把注意力转移到自身和家庭财产安全上来，安全逐渐成为了一项市场需求，传统模式下的人防物防变得无法满足社会生活发展的需要。科学技术的飞速进步和普遍应用，使得家庭安全报警系统在人们对美好生活的追求中迅速崛起。79412

本设计系统的核心控制器为51单片机，通过烟雾传感器、火焰传感器、温湿度传感器所测得的数据返回单片机进行处理，使得单片机与传感器相互连接，收集传感器所测得的数据，经过分析处理由LED液晶显示屏显示具体数值。当烟雾浓度超标、环境温度过高，或者有火灾发生时，蜂鸣器及语音模块及时进行报警，同时触发继电器动作，自动启动爆窗装置破窗。

本系统能够精确地检测环境温度、湿度以及烟雾浓度等各类环境参数，及在此基础上的相应的环境情况，通过LED灯、蜂鸣器及语音模块准确报警。通过测试，本系统不仅用起来十分方便，还具有非常好的稳定性。

毕业论文关键词：环境监测；STC89C52RC；爆窗器；智能传感器

Abstract Nowadays, with the quality of life improving,more and more people start to pay their attention to their own safety and the family property。 Security is becoming a market demand。 Anti-air defense was the traditional mode of life become unable to meet the needs of social development。 With the rapid progress and widely uses of the science and technology, home security alarm system has been in the rapid rise in people's seeking for  a better life。

The system is in view of 51 microcontroller chip as the core controller, use smoke sensor, a sensor about flame and a sensor consists of temperature and humidity measured data back microcontroller for processing。 So that the MCU and sensors can connect to each other and collect sensor data measured through the analysis process by the LED LCD display specific values。 When the smoke concentration is too high, or a fire occurs, the buzzer and voice modules alarm in a timely while the relay is triggered, the device automatically starts blasting windows to break the window。

The system can accurately detect the environmental temperature, humidity, smoke concentrations and the other factors of the environment。 On this basis of the corresponding environmental conditions, buzzer and voice modules will alarm while the LED will light。 The system is not only very convenient to use, but also has very good stability through testing。

Key words: Environmental Monitoring; STC89C52RC; Critical window; Smart sensors

目录

第一章  绪论 1

1。1 选题背景与意义 1

1。2 国内外现状及问题 1

1。2。1国外智能家居的发展情况 2

1。2。2国内智能家居的发展现状 3

1。3本设计研究成果 5

1。4本章小结 5

第二章  系统方案论证 6

2。1系统的总体设计 6

2。2模块的选择与论证 6

2。3本章小结 7

第三章  系统硬件组成 8

3。1 系统的硬件组成 8

3。2 核心控制器 8

3。3 火焰传感器模块的硬件原理 9

3。3。1 火焰传感器介绍