论文总字数：17319字

摘 要

随着经济社会发展，人民在生活水平不断改善的同时却也因为环境污染等诸多问题造成的人身危害而困扰着。随着近些年环境问题的越来越严重化，确实也引起人们的广泛关注和讨论，如何实时了解自己所处环境的健康问题也成为现下注重健康群体们热烈讨论的话题。目前，我国在与PM2.5的检测研究技术已趋于成熟化，可以实现对户外环境中PM2.5在空气中的含量进行实时和准确的监测。但是，现如今空气污染的严重危害早已不仅仅存在于户外空气中，我们长时间所处的室内环境的空气质量仍然对人们的身体存在着极大的危害。所以实现室内空气质量的实时监测和检测现下也是非常重要的技术。但是，很多传统的空气质量检测仪安装繁琐，造价昂贵，而且操作性复杂，要真正安装在室内是非常不现实的，所以，本次实验课题设计主要是基于传感器技术和STM32设计一款智能家用空气质量检测仪，编写Android客户端，实现空气质量数据的显示，历史数据的查询，曲线绘制等功能。当PM2.5浓度超过设定值之后，进行报警, 这样就可以实现空气质量数据的采集以及远程接收的功能。

关键字： STM32单片机； 模数转换；粉尘传感器； 报警；Andriod操作系统；WIFI通信模块；手机APP客户端。

Design of indoor air quality acquisition system based on WiFi (Android part)

Abstract

Along with the development of our social and our economic , the living of people standards continue to improve at the same time, but also because of environmental pollution and many other problems caused by personal harm. With the more and more serious environmental problems in recent years, it has indeed caused widespread concern and discussion. How to understand the health problems of their own environment in real time has become a hot topic among health groups. At present, the detection technology of PM2.5 in China has become mature, which can realize the real-time and accurate monitoring of PM2.5 content in the air in outdoor environment. However, nowadays, the serious harm of air pollution does not only exist in the outdoor air, but also in the indoor environment for a long time. So the realization of real-time monitoring and detection of indoor air quality is also a very important technology. However, the installation of many traditional air quality detectors is cumbersome, expensive and complicated, so it is very unrealistic to install them indoors. Therefore, the design of this experiment is mainly based on sensor technology and STM32 to design an intelligent home air quality detector, write Android client, realize the display of air quality data and query of historical data, Curve drawing and other functions. When the concentration of PM2.5 exceeds the set value, an alarm is given to realize the function of air quality data collection and remote reception.

Key words: dust concentration; SCM STM32; Analog to digital conversion; WiFi communication module; PM2.5 sensor; call the police; Android operating system; Mobile app client.

目 录

摘 要 I

Abstract II

第一章 绪论 1

1.1 课题研究背景 1

1.2 课题研究的目的和意义 1

1.3国内外研究及发展现状 1

1.4 课题的主要内容 2

第二章 系统的总方案设计 3

第三章 系统硬件电路设计 4

3.1 系统的总体电路设计 4

3.2传感器的选择 4

3.3 A/D模数转化模块的方案设计 5

3.4 控制部分的方案设计 5

3.5 Wifi 通信模块电路的方案设计 6

3.6 液晶显示模块设计 7

3.7 报警模块设计 8

第四章 软件系统设计 9

4.1系统工作流程设计 9

4.2单片机与ADC0832模数转换模块的端口设计 9

4.3手机APP客户端的设计 9

4.3.1手机客户端APP主体框架 9

4.3.2 APP使用步骤及界面介绍 10

4.3.3源码说明 15

4.3.3.1 Android控制界面入口 15

4.3.3.2 Android 登录配置 16

4.3.4 APP配置文件说明 17

第五章 系统测试 20

第六章 结 论 21

致 谢 22

参考文献 23

第一章 绪论

1.1 课题研究背景

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