设计简介：
项目名：环境监测（实物）
项目编号：mcuclub-dz-248
单片机类型：STM32F103C8T6
具体功能：
1、通过DHT11获取温湿度
2、通过光敏电阻获取光照值
3、通过OLED显示屏显示测量值
4、通过WIFI模块（ESP8266）将测量数据发送到手机端
总字数：12886
实物链接：点击跳转
设计说明书链接：点击跳转
开题报告链接：点击跳转
答辩PPT链接：点击跳转
摘 要
随着工业化进程的加快，导致空气能见度低、酸雨、臭氧层破坏、温室效应等大气环境污染问题凸显，这些污染严重影响着人类的呼吸健康和血液循环系统。如何有效监测大气环境参数、治理大气环境污染成为重中之重，急需设计一款能够实时监测环境信息的微型监测系统。
为了解决上述环境问题，本文基于单片机和传感器技术，设计一款智能环境监测系统，采用STM32单片机作为主控芯片，采用DHT11传感器获取环境中的温湿度，采用光敏电阻获取光照强度值，采用OLED显示屏对环境温湿度、光照强度等值进行显示，除此之外，采用WiFi连接手机端和系统端，可以将监测到的实时数据发送到手机端进行显示，也可以通过手机端远程控制阈值设置和模式切换，各模块器件相互配合，共同完成环境监测系统的相关功能。
经过多次实物测试，本监测系统能够长期稳定运行，并提供稳定可靠的数据，其操作界面简单明了，传感器种类丰富，网络兼容性强，开发成本低，可单独作为环境监测系统使用，也可与其他智能家居配套使用，具有较强的实用价值。
关键词：STM32单片机；环境监测；传感器；WiFi；显示屏
Abstract
With the acceleration of industrialization, air pollution problems such as low air visibility, acid rain, ozone layer destruction, and greenhouse effect have become prominent, which seriously affect human respiratory health and blood circulation system. How to effectively monitor atmospheric environmental parameters and control atmospheric environmental pollution has become the top priority, and it is urgent to design a micro-monitoring system that can monitor environmental information in real time.
In order to solve the above environmental problems, this paper designs an intelligent environmental monitoring system based on single-chip microcomputer and sensor technology. STM32 single-chip microcomputer is used as the main control chip, DHT11 sensor is used to obtain ambient temperature and humidity, photoresistor is used to obtain light intensity value, and OLED display screen is used to display the equivalent value of ambient temperature and humidity and light intensity. In addition, the WiFi connection between the mobile phone and the system can send the real-time data monitored to the mobile phone for display, and it can also remotely control the threshold setting and mode switching through the mobile phone. Each module and device cooperate with each other to jointly complete the relevant functions of the environmental monitoring system.
After many physical tests, the monitoring system can run stably for a long time, and provide stable and reliable data, its operation interface is simple and clear, rich sensor types, network compatibility, low development cost, can be used as an environmental monitoring system alone, can also be used with other smart homes, with strong practical value.
Key words: STM32 MCU; Environmental monitoring; Sensor; WiFi; Display screen
目 录
1.绪论 3
1.1 研究背景及其研究意义 3
1.2 国内外研究现状 3
1.2.1 国内研究现状 3
1.2.2 国外研究现状 4
1.3 研究目标和组织结构 4
2.系统方案设计 6
2.1 整体方案设计 6
2.2 主要器件选型选择 6
2.2.1 主控芯片方案选择 6
2.2.2 显示模块方案选择 7
2.2.3 光照检测模块方案选择 7
2.2.4温湿度检测模块方案选择 8
3.硬件电路设计 9
3.1 单片机最小系统 9
3.1.1 主控模块电路 9
3.1.2 晶振电路 11
3.1.3 复位电路 12
3.1.4 电源电路 13
3.1.5 下载电路 15
3.2 DHT11温湿度检测模块电路 15
3.3 光照强度检测模块电路 18
3.4 OLED显示模块电路 19
3.5 WIFI无线传输模块电路 20
4.系统程序设计 22
4.1 编程软件介绍 22
4.2 系统主流程设计 22
4.3 温湿度检测模块子流程 23
4.4 OLED显示流程设计 24
4.5 WiFi模块子流程设计 25
5.实物调试 27
5.1 实物焊接 27
5.2 实物总体设计 27
5.3温湿度监测模块实物测试 28
5.4光照强度模块实物测试 29
总结 30
参考文献 31
致谢 32
附录 33
附录A：原理图 33
附录B：PCB 34
附录C：程序 35