摘要随着社会进步，工业化的飞速发展，我们赖以生存的环境受到了极大的威胁，越来越多的环境问题暴露在人类面前。工业经济在给人们带来便利的同时，由此而引发的环境问题也急需得到解决。在这一背景下，环境质量检测获得人们越来越多的重视，基于网络的环境质量检测系统正是实现环境保护的最有效办法之一。84095

本文系统介绍了基于网络的环境质量检测系统，该系统主要完成设备的数据采集、显示、发送与存储工作，实现无线传感网络的底层设计。整体设计是将DHT11温湿度传感器采集的温湿度数据、BMP085气压传感器采集的气压数据以及粉尘传感器GP2Y1050AU0F采集的烟雾浓度数据通过无线模块Si4432发送和接收，传到上位机（PC）,并可以根据需要将数据显示在OLED显示屏上。本次选用的微处理器是单片机STM32F103RCT6，STM32F103RCT6作为一款耗能低、性能优越的32位单片机,有着强大的功能,可以使该方案完成采集数据时耗能低、功能多样、通道多选、控制智能化等多项目标。

毕业论文关键词：环境监测； STM32；无线射频；传感器

Abstract As the society is improving and the progress of industrialization develops rapidly, the environment we live in is under great threat, and more and more environmental problems are exposed to us。 Industrial economy has brought convenience to people, at the same time, the environmental problems caused by this has aroused people's attention。 In this context, the human has paid more attention to environmental quality detection。 One of the most effective ways to protect the environment is the environmental quality inspection system based on wireless network。

This paper introduces the system environment quality detection system based on the network; this design mainly completes data acquisition, data display, data transmission and the equipment storage; it can realize the wireless sensor network。 The whole design includes: the temperature and humidity sensor DHT11 obtaining data of temperature and humidity; the pressure sensor bmp085 collecting pressure data and dust sensor GP2Y1050AU0F collecting smoke concentration data through wireless module Si4432 to send out data and collect data , and it can show the results by OLED display according to need。 This design choose STM32F103RCT6 as the microprocessor ;it is a low consumption, high performance 32 bit microcontroller, because of its powerful function, this new program can achieve data acquisition of low power, multi function, multi-channel, intelligent control。 

Keywords:  Environmental monitoring; STM32; Sensor; Radio frequency

目 录

第一章  绪论 1

1。1 课题研究背景及意义 1

1。2 国内外研究现状 2

1。2。1 国外自动气象站发展现状 2

1。2。2 国内自动气象站发展现状 3

1。3 本文的结构及主要内容 4

第二章  系统的硬件设计 5

2。1 硬件总体结构 5

2。2 单片机STM32F103RCT6 6

2。2。1 单片机的选择 6

2。2。2 STM32F103RCT6 6

2。3 温湿度传感器DHT11 8

2。3。1温湿度传感器的选择 8

2。3。2温湿度传感器DHT11 8

2。4 粉尘传感器GP2Y1050AU0F 11