基于51单片机的家居空气检测系统的设计与实现.docx

基于51单片机的家居空气检测系统的设计与实现 PAGE PAGE 1 摘要 当前社会中，人们已经更加的关注自己的身体健康状况，影响人们身体健康的因素有很多，而人们居住的环境就是其中之一。在人们的周围，不但有温度、湿度这种人们能直接感知到的东西，还有一些不容易感知到的，比如空气质量的好坏，空气中是否存在有毒有害气体等。但是这些环境因素实实在在的影响着人们的生活健康，因此，一款可以测量周围温湿度和空气质量的产品对于人们是有着至关重要的意义的。 本项目可以检测家庭中的甲醛含量、烟雾含量、PM2.5含量以及温度和湿度，并在液晶屏上将上述检测结果呈现出来。同时系统具有时间显示功能。通过系统上的按键可以对系统的时间进行调整，系统的时间具有掉电保存功能。当空气中的甲醛含量、烟雾含量、PM2.5含量超过系统的设定范围时，系统将发出报警。 关键词：空气检测；单片机；温湿度测量；甲醛测量 Abstract In the current society, people have paid more attention to their physical health, there are many factors affecting people's physical health, and people's living environment is one of them. Around people, there are not only temperature and humidity, which people can directly perceive, but also some things that are not easy to perceive, such as the quality of the air, whether there are toxic and harmful gases in the air. But these environmental factors really affect people's life and health, so a product that can measure ambient temperature and humidity and air quality is of vital significance to people. This project can detect formaldehyde content, smoke content, PM2.5 content, temperature and humidity in the home, and display the above detection results on the LCD screen. At the same time, the system has time display function. The time of the system can be adjusted through the buttons on the system. The time of the system has the function of power loss and storage. When the formaldehyde content, smoke content and PM2.5 content in the air exceed the set range of the system, the system will give an alarm. Keywords: air detection; Single chip microcomputer; Temperature and humidity measurement; Formaldehyde measurement 目 录 TOC \o "1-3" \h \u 19409 摘要 I 1650 Abstract II 26687 1 绪论 1 3837 1.1 课题研究的背景 1 29381 1.2 课题的研究工作 1 18965 1.3 本项目主要的研究内容 1 23583 2 总体设计方案 3 15939 2.1 整体方案概述 3 28290 2.2 方案选择 3 15215 2.2.1 可编程处理器的选择 3 22170 2.2.2 温湿度传感器的选择 4 28274 2.2.3 粉尘传感器的选择 4 23886 2.2.4 烟雾传感器的选择 4 22083 2.2.5 模数转换模块的选择 5 8378 2.2.6 甲醛传感器的选择 5 2035