设计说明书
总字数：19000+
摘要
随着人们对阅读环境舒适度要求的提高，图书馆空气质量的精准调控愈发重要。传统的图书馆环境管理多依赖人工巡查和手动通风，不仅调节滞后，而且无法实时监测温湿度、甲醛、PM2.5 等参数，难以满足读者对健康舒适阅读环境的需求。
基于 STM32F103C8T6 单片机的图书馆空气质量监测与净化系统，整合了 DHT11 温湿度检测模块、甲醛模块 MS1100、PM2.5 检测模块 GP2Y10、OLED 显示模块、按键、WiFi 模块 ESP8266 及加热、制冷、通风继电器等，实现了图书馆环境的自动化监测与智能净化。系统核心功能包括：通过 DHT11 实时监测温湿度，温度过高时打开制冷继电器，温度过低时启动加热继电器，湿度过高时开启通风继电器；借助 MS1100 检测甲醛浓度，当浓度大于设置最大值时，启动通风继电器；利用 GP2Y10 检测 PM2.5，浓度超限时打开通风继电器；支持通过按键设置各参数阈值；通过 OLED 显示模块实时显示温湿度、甲醛浓度、PM2.5 值等数据；通过 WiFi 模块 ESP8266 将数据传输至手机端，手机可远程设置参数及控制加热、制冷、通风继电器。
该系统的实现，有效提升了图书馆空气质量调控的自动化与智能化水平，减少了人工干预，确保了环境参数的稳定，为读者提供了健康舒适的阅读环境，同时为同类室内环境监测与净化设备的研发提供了参考，具有较高的实际应用价值。
关键词：STM32F103C8T6；图书馆；空气质量；监测与净化；WiFi 通信；智能调控
ABSTRACT
With the increasing demand for comfortable reading environments, precise control of air quality in libraries has become increasingly important. Traditional library environment management relies heavily on manual inspections and manual ventilation, which not only results in delayed adjustments but also fails to real-time monitor parameters such as temperature, humidity, formaldehyde, and PM2.5, making it difficult to meet readers’ needs for a healthy and comfortable reading environment.
The library air quality monitoring and purification system based on the STM32F103C8T6 microcontroller integrates the DHT11 temperature and humidity detection module, formaldehyde module MS1100, PM2.5 detection module GP2Y10, OLED display module, buttons, WiFi module ESP8266, as well as heating, cooling, and ventilation relays, achieving automatic monitoring and intelligent purification of the library environment. The core functions of the system include: real-time monitoring of temperature and humidity through DHT11, turning on the cooling relay when the temperature is too high, activating the heating relay when the temperature is too low, and starting the ventilation relay when the humidity is too high; detecting formaldehyde concentration with MS1100, and starting the ventilation relay when the concentration exceeds the set maximum value; using GP2Y10 to detect PM2.5, and turning on the ventilation relay when the concentration exceeds the limit; supporting threshold setting through buttons; real-time display of temperature, humidity, formaldehyde concentration, PM2.5 value and other data via the OLED display module; transmitting detected data to the mobile phone through the WiFi module ESP8266, allowing the mobile phone to set parameters and control heating, cooling, and ventilation relays remotely.
The implementation of this system effectively improves the automation and intelligence level of library air quality control, reduces manual intervention, ensures the stability of environmental parameters, provides readers with a healthy and comfortable reading environment, and also provides a reference for the research and development of similar indoor environment monitoring and purification equipment, with high practical application value.
Keywords:STM32F103C8T6; library; air quality; monitoring and purification; WiFi communication; intelligent control
目录
第1章 绪论
1.1 研究的目的及意义
1.2 国内外发展情况
1.3 本文主要研究内容
第2章 设计思路与方案论证
2.1 主要元器件选择
2.1.1 主控芯片选择
2.1.2 温湿度检测模块选择
2.1.3 甲醛检测模块选择
2.1.4 PM2.5 检测模块选择
2.1.5 显示模块选择
2.1.6 按键模块选择
2.1.7 WiFi 模块选择
2.1.8 执行设备选择
2.2整体设计方案
第 3 章 硬件设计
3.1 主控电路模块
3.2 温湿度检测模块电路
3.3 甲醛检测模块电路
3.4 PM2.5 检测模块电路
3.5 显示模块电路
3.6 WiFi 模块电路
3.7 按键模块电路
3.8 执行设备驱动电路
第4章 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 OLED显示流程设计
4.5 温湿度检测模块子流程
4.6 PM2.5检测模块子流程设计
4.7 WiFi模块子流程设计
第 5 章 实物测试
5.1 整体实物测试
5.2 温湿度检测模块功能测试
5.3 甲醛检测模块功能测试
5.4 PM2.5 检测模块功能测试
5.5 显示模块功能测试
5.6 WiFi 模块功能测试
5.7 按键设置功能测试
5.8 执行设备功能测试
第6章 总结与展望
6.1 总结
6.2 展望
致谢
参考文献
附录
附录一：原理图
附录二：PCB
附录三：主程序
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