设计说明书
总字数：18000+
摘要
随着文化事业的发展，图书馆作为重要的公共文化场所，其环境质量对读者体验和文献保存具有重要影响。传统的图书馆环境管理多依赖人工巡检，不仅存在响应滞后的问题，而且难以精准调控温湿度、光照等参数，难以满足现代化图书馆对环境管理的智能化需求。
基于 STM32F103C8T6 单片机的图书馆环境监测系统，整合了 DHT11 温湿度传感器、5516 光照检测模块、DS1302 时钟模块、分离式红外对射管、3 个独立按键、OLED 显示屏及声光报警装置，实现了图书馆环境的全方位监测与智能调控。系统核心功能包括：通过 DHT11 检测环境温湿度，温度大于最大值时启动通风，湿度大于最大值时进行加热，温湿度异常时触发声光报警；借助 5516 光照检测模块监测光照强度，光照小于最小值时进行补光并声光报警；通过 DS1302 获取当前时间；利用分离式红外对射管检测人数，有人时显示为阅览室，无人时显示为书库；通过 OLED 显示屏展示测量数据和设置的阈值；支持通过 3 个独立按键切换界面并设置参数。
该系统的实现，有效提升了图书馆环境管理的自动化与智能化水平，确保了环境参数的适宜性，为读者提供了舒适的阅读环境，也利于文献的保存，同时为同类公共场所环境监测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；图书馆环境；监测系统；温湿度检测；光照调控
ABSTRACT
With the development of cultural undertakings, libraries, as important public cultural venues, their environmental quality has a significant impact on reader experience and document preservation. Traditional library environment management mostly relies on manual inspections, which not only has the problem of delayed response but also is difficult to accurately regulate parameters such as temperature, humidity, and light, making it difficult to meet the intelligent needs of modern libraries for environmental management.
The library environment monitoring system based on STM32F103C8T6 microcontroller integrates DHT11 temperature and humidity sensor, 5516 light detection module, DS1302 clock module, separate infrared correlation tube, 3 independent buttons, OLED display and sound – light alarm device, realizing comprehensive monitoring and intelligent regulation of the library environment. The core functions of the system include: detecting the environmental temperature and humidity through DHT11, starting ventilation when the temperature is higher than the maximum value, heating when the humidity is higher than the maximum value, and triggering sound – light alarm when the temperature and humidity are abnormal; monitoring the light intensity through 5516 light detection module, supplementing light when the light is lower than the minimum value and triggering sound – light alarm; obtaining the current time through DS1302; detecting the number of people with a separate infrared correlation tube, displaying “reading room” when there are people and “book storage” when there are no people; showing the measured data and set thresholds through the OLED display; supporting interface switching and parameter setting through 3 independent buttons.
The implementation of this system effectively improves the automation and intelligence level of library environment management, ensures the suitability of environmental parameters, provides a comfortable reading environment for readers, and is conducive to the preservation of documents. At the same time, it provides a reference for the research and development of environmental monitoring equipment in similar public places, with high practical application value.
Keywords:STM32F103C8T6; Library environment; Monitoring system; Temperature and humidity detection; Light regulation
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 温湿度传感器选择
2.1.3 光照检测模块选择
2.1.4 时钟模块选择
2.1.5 红外对射管选择
2.1.6 显示模块选择
2.1.7 按键模块选择
2.1.8 声光报警模块选择
2.1.9 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 温湿度传感器电路
3.3 光照检测模块电路
3.4 时钟模块电路
3.5 红外对射管电路
3.6 显示模块电路
3.7 按键模块电路
3.8 声光报警模块电路
3.9 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 OLED显示子流程设计
4.4 独立按键子流程设计
4.5 ADC模数转换子流程设计
4.6 温湿度检测模块子流程设计
4.7 时钟模块子流程设计
第 5 章 实物测试
5.1 整体实物测试
5.2 温湿度传感器功能测试
5.3 光照检测模块功能测试
5.4 时钟模块功能测试
5.5 红外对射管功能测试
5.6 按键设置与显示功能测试
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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