设计说明书
总字数：16000+
这个基于STM32单片机的便携式室内空气质量检测仪的设计非常有益于解决室内空气质量监测领域存在的问题。通过集成多种气体传感器和其他功能，该设备可以提供实时的室内空气质量信息，帮助人们更好地管理室内环境，保障健康。以下是该设计的一些优点和特点：高精度传感器： 使用低功耗且高精度的金属氧化物气体传感器（如MQ-2、MQ-5、MQ-7和MQ-135），能够准确检测多种室内污染气体，包括烟雾、天然气、一氧化碳和有害混合气体。多功能设计： 设备不仅仅是空气质量检测仪，还集成了声光报警、风扇、净化器等功能，可以在检测到异常时采取相应的措施，提升室内空气的质量。温湿度检测： 集成DHT11温湿度传感器，监测室内温度和湿度，帮助用户了解室内环境的整体状况。用户交互： 通过显示屏和按键，用户可以实时查看检测数据、设置报警上限以及手动控制风扇和净化器，提供了便捷的用户交互方式。蓝牙连接：集成蓝牙模块，可以将测量数据传送到手机端，用户可以远程监测室内空气质量，以及远程控制设备的功能。便携性：设计为便携式，可以方便地携带到不同的室内环境，满足不同场所的空气质量检测需求。智能干预： 设备不仅仅是监测工具，还具备智能干预功能，能够在检测到异常时自动采取措施，提醒用户并改善室内环境。总体来说，该设计有效地集成了多种传感器和功能，实现了全面的室内空气质量监测和干预，有望在提升室内空气质量、保障健康方面发挥积极作用。
关键词：室内空气质量检测仪；STM32单片机；气体传感器；声光报警；蓝牙连接；智能干预
The design of this portable indoor air quality monitor based on the STM32 microcontroller is highly beneficial in addressing issues within the field of indoor air quality monitoring. By integrating multiple gas sensors and other functionalities, this device provides real-time indoor air quality information, helping individuals better manage their indoor environments and safeguard their health. Here are some advantages and features of this design:High-precision sensors: Utilizing low-power and high-precision metal oxide gas sensors such as MQ-2, MQ-5, MQ-7, and MQ-135, the device accurately detects various indoor pollutants, including smoke, natural gas, carbon monoxide, and harmful mixed gases.Multi-functional design: The device goes beyond being a simple air quality monitor; it also integrates features like sound-light alarms, fans, and purifiers. These functions can take appropriate actions when anomalies are detected, enhancing indoor air quality.Temperature and humidity monitoring: With the integrated DHT11 temperature and humidity sensor, the device monitors indoor temperature and humidity, providing users with an overview of the indoor environment.User interaction: Through the display screen and buttons, users can view real-time monitoring data, set alarm thresholds, and manually control fans and purifiers, offering convenient user interaction.Bluetooth connectivity: Integration of a Bluetooth module allows measurement data to be sent to a smartphone, enabling remote monitoring of indoor air quality and remote control of the device’s functions.Portability: Designed as a portable device, it can be easily carried to different indoor environments, catering to air quality monitoring needs in various settings.Intelligent intervention: The device is not merely a monitoring tool but also possesses intelligent intervention capabilities. It can automatically take actions upon detecting anomalies, alerting users and improving the indoor environment.Overall, this design effectively integrates various sensors and functionalities, achieving comprehensive indoor air quality monitoring and intervention. It holds the potential to play a proactive role in enhancing indoor air quality and safeguarding health.
Keywords: indoor air quality monitor; STM32 microcontroller; gas sensor; sound-light alarm; Bluetooth connectivity; intelligent intervention
目录
基于STM32单片机的便携式室内空气质量检测仪
摘要
Abstract
第一章 绪论
1.1课题设计背景与意义
1.2国内外发展历程
1.3研究目标及预期功能
第二章 设计思路与方案选择
2.1 主要元器件选择
2.1.1 主控芯片选择
2.1.2 烟雾检测模块方案选择
2.1.3 天然气检测模块方案选择
2.1.4 CO检测模块方案选择
2.1.5 温湿度检测模块方案选择
2.1.6 有害气体检测模块方案选择
2.2整体设计方案
第三章 硬件设计
3.1主控电路模块
3.2 烟雾检测模块电路
3.3 天然气检测模块电路
3.4 有害气体检测模块
3.5 CO检测模块
3.6 温湿度检测模块
3.7 显示模块电路
3.8 继电器模块电路
3.9 按键模块电路
3.10 声光报警模块电路
3.11 蓝牙模块电路
第四章 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温湿度检测模块子流程
4.5蓝牙模块子流程
4.6OLED显示流程设计
第五章 实物测试
5.1整体实物测试
5.4天然气检测实物测试
5.6 CO检测实物测试
5.7手机远程测控实物测试
第六章 总结与展望
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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