摘要
随着现代家庭对火源和电力使用的日益增加，家庭火灾的风险也随之上升，对人们的生命财产安全构成了严重威胁。为了有效应对这一挑战，本课题设计了一种基于STC89C51单片机的无线多功能智能火灾报警系统。该系统集成了气体传感器MQ-2、ADC0832模数转换器、DS18B20温度传感器以及液晶显示、声光报警等模块，实现了对环境中可燃气体浓度、温度等参数的实时监测与智能报警。
当检测到环境中的可燃气体浓度超标或温度异常升高时，系统能够迅速响应，通过灯光和声音两种方式发出报警信号，同时液晶显示屏会显示具体的报警信息，以便用户及时采取应对措施。此外，该系统还具备无线传输功能，能够将报警信息实时发送至用户的移动设备，实现远程监控和报警。
通过实际测试，该系统表现出良好的稳定性和准确性，能够有效降低家庭火灾的风险，提高人们的生命财产安全水平。
关键词：STC89C51单片机；无线传输；智能火灾报警；气体传感器MQ-2；ADC0832模数转换器；DS18B20温度传感器
Abstract
With the increasing use of fire sources and electricity in modern households, the risk of household fire also increases, which poses a serious threat to the safety of people's lives and property. In order to effectively respond to this challenge, this paper designed a wireless multi-function intelligent fire alarm system based on STC89C51. The system integrates the gas sensor MQ-2, ADC0832 analog-to-digital converter, DS18B20 temperature sensor, liquid crystal display, sound and optical alarm and other modules, to realize the real-time monitoring and intelligent alarm of combustible gas concentration, temperature and other parameters in the environment.
When the concentration of combustible gas in the environment is detected or the temperature rises abnormally, the system can respond quickly and send alarm signals through two ways: light and sound. At the same time, the LCD screen will display specific alarm information, so that users can take countermeasures in time. In addition, the system also has the wireless transmission function, which can send the alarm information to the user's mobile device in real time to realize remote monitoring and alarm.
Through the actual test, the system shows good stability and accuracy, which can effectively reduce the risk of household fire and improve the safety level of people's life and property.
Key words: STC89C51 single-chip microcomputer; wireless transmission; intelligent fire alarm; gas sensor MQ-2; ADC0832 analog-to-digital converter; DS18B20 temperature sensor
目录
摘要
Abstract
目录
1 绪论
1.1 课题的研究背景
1.2 课题的研究目的与意义
1.3 火灾报警器的发展与现状
1.4课题的研究内容
2 火灾报警器的总体方案设计
2.1系统的功能要求
2.2 系统的技术要求
2.3 系统的组成及方案设计
3 系统的硬件设计
3.1 主控电路
3.2 烟雾探测电路的设计
3.2.1 MQ-2介绍
3.2.2 ADC0832介绍
3.3 液晶显示电路设计
3.4 声光报警提示电路
3.4.1 灯光提示电路
3.4.2 声音报警电路
3.5 温度采集电路
3.5.1 DS18B20概述
3.5.2 DS18B20引脚介绍
3.5.3 DS18B20的内部结构
3.5.4 DS18B20的程序流程图
3.6 按键电路
4 系统的软件设计
4.1 软件介绍
4.2 系统程序流程图
5火灾报警器的测试结果及结论
5.1 调试
5.2 结论
致谢
参考文献
源程序
