设计说明书
总字数：19000+
摘要
随着环境问题日益受到关注，室内外空气质量的实时监测与预警成为保障人们健康生活的重要需求。传统空气质量检测方式存在操作复杂、数据反馈不及时等问题，难以满足人们对空气质量动态监测的需求。因此，研发一种便捷、高效且具备智能预警功能的空气质量检测系统具有重要意义。
本设计提出了一种基于 STM32F103C8T6 单片机的智能空气质量检测系统。系统主要功能包括：通过 DHT11 温湿度检测模块实时采集当前环境的温度与湿度数据；借助 MQ-2 检测模块监测环境中的可燃气体浓度；利用 5516 光照检测模块获取环境光照强度；当检测到可燃气体浓度超标或温湿度超出用户设定范围时，系统立即启动声光报警功能，及时提醒用户；通过 OLED 液晶显示模块直观展示各项检测数据，方便用户实时查看；用户可通过按键自主设置温湿度及可燃气体的报警阈值；同时，系统通过 ESP8266-12F WiFi 模块将检测数据传输至手机端，用户也可在手机端远程设置各参数阈值，实现灵活便捷的远程监测与控制。
该智能空气质量检测系统的作用在于，为用户提供了全方位、多维度的空气质量监测解决方案。通过实时检测、智能报警、数据可视化及远程控制功能，能够帮助用户及时掌握环境质量状况，提前规避潜在安全风险，为人们营造安全、健康的生活与工作环境提供有力保障。
关键词：STM32F103C8T6；智能空气质量检测系统；温湿度检测；可燃气体检测；WiFi
Intelligent Air Quality Detection System Based on Single Chip Microcomputer
Abstract
With the increasing attention to environmental issues, real-time monitoring and early warning of indoor and outdoor air quality have become important needs to ensure people’s healthy lives. The traditional air quality detection method has problems such as complex operation and untimely data feedback, which makes it difficult to meet people’s needs for dynamic monitoring of air quality. Therefore, developing a convenient, efficient, and intelligent air quality monitoring system with warning functions is of great significance.
This design proposes an intelligent air quality detection system based on STM32F103C8T6 microcontroller. The main functions of the system include: real-time collection of temperature and humidity data of the current environment through the DHT11 temperature and humidity detection module; Monitor the concentration of combustible gases in the environment using the MQ-2 detection module; Utilize the 5516 light detection module to obtain ambient light intensity; When the combustible gas concentration exceeds the standard or the temperature and humidity exceed the user’s set range, the system immediately activates the sound and light alarm function to remind the user in a timely manner; Visually display various detection data through OLED LCD display module, making it convenient for users to view in real time; Users can independently set the alarm thresholds for temperature, humidity, and combustible gases through buttons; At the same time, the system transmits detection data to the mobile phone through the ESP8266-12F WiFi module, and users can also remotely set various parameter thresholds on the mobile phone to achieve flexible and convenient remote monitoring and control.
The function of this intelligent air quality monitoring system is to provide users with a comprehensive and multi-dimensional air quality monitoring solution. Through real-time detection, intelligent alarm, data visualization, and remote control functions, it can help users timely grasp the environmental quality status, avoid potential safety risks in advance, and provide strong guarantees for creating a safe and healthy living and working environment for people.
Keywords：STM32F103C8T6; Intelligent air quality detection system; Temperature and humidity detection; Combustible gas detection; WiFi.
目 录
1 绪论
1.1 研究背景及意义
1.2 国内外研究现状
1.3 主要内容
2 系统总体方案设计
2.1系统总体设计
2.2 主要模块方案选择
3 系统硬件设计
3.1 总体硬件框架
3.2 主控模块电路设计
3.3 温湿度检测模块电路设计
3.4 可燃气体检测模块电路设计
3.5 光照检测模块电路设计
3.6 显示模块电路设计
3.7 按键模块电路设计
3.8 声光报警模块电路设计
3.9 WiFi 通信模块电路设计
4 系统程序设计
4.1 编程软件介绍
4.2 系统主流程设计
4.3 独立按键
4.4 温湿度检测模块子流程
4.5 可燃气检测模块子流程设计
4.6 光照检测模块子流程设计
4.7 OLED显示流程设计
4.8 WiFi模块子流程设计
5 实物制作与功能测试
5.1 实物制作
5.2 DHT11 温湿度检测与声光报警功能测试
5.3 MQ-2 可燃气体检测与声光报警功能测试
5.4 5516 光照检测功能测试
5.5 阈值设置功能测试
5.6 WiFi 数据传输与手机端控制功能测试
6 总结
参考文献
致谢
附录A 原理图
附录B PCB
附录C 主程序
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