项目编号：mcuclub-dz-309
设计简介：
项目名：酒精检测（实物）
项目编号：mcuclub-dz-309
单片机类型：STM32F103C8T6
具体功能：
1、通过MQ-3检测酒精值，当酒精值大于酒驾值或醉驾值，则声光报警，并通过语音播报酒精检测值及状态
2、通过按键可设置酒驾值、醉驾值，通过启动键开始启动检测，5s后自动确认，通过另一个按键复位检测
3、通过OLED显示测量数据
4、通过WIFI模块，可将数据发送到手机端，手机端可设置酒驾值、醉驾值，也可以开始启动检测、复位检测
总字数：14028
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
酒后驾驶是引发交通事故的关键因素之一。“呼气式酒精检测仪”是当前交警执法的主要仪器，该仪器存在被动性大、过程繁琐等缺陷，为了改善检测仪的性能，设计一款智能酒精检测系统是当务之急。
本文在分析和调研国内外相关技术基础上，研制了一款车载酒精检测仪，该检测仪以STM32单片机作为主控芯片，通过MQ-3检测酒精浓度值，通过独立按键不仅可以进行酒驾值和醉驾值的设置，还可以进行开启启动检测。当酒精浓度值大于酒驾值或醉驾值，进行声光报警和数据显示，并通过语音播报酒精检测值及状态。此外，通过WIFI模块进行无线通信，可将监测到的数据发送到手机端进行显示，也可以通过手机端控制阈值设置、开始启动检测和复位检测。
对系统主要功能进行测试，对比分析了在不同浓度下的酒精检测结果，通过实物验证该检测仪能够对司机酒驾进行有效判断并及时报警。本次研制的酒精检测仪具有主动、实时、简便特点，能够较好地制止酒后驾驶行为。
关键词：STM32单片机；酒精监测；传感器；WiFi；报警
Abstract
Drunk driving is one of the key factors that cause traffic accidents. “Breath alcohol detector” is the main instrument for traffic police law enforcement at present, the instrument has some defects such as large passivity and cumbersome process. In order to improve the performance of the detector, it is urgent to design an intelligent alcohol detection system.
Based on the analysis and research of relevant technologies at home and abroad, this paper developed a vehicle alcohol detector. The detector uses STM32 single chip microcomputer as the main control chip to detect alcohol concentration through MQ-3, and can not only set drunk driving value and drunk driving value, but also open and start detection through independent buttons. When the alcohol concentration value is greater than the drunk driving value or drunk driving value, sound and light alarm and data display are carried out, and the alcohol test value and status are broadcast by voice. In addition, the wireless communication through the WIFI module can send the monitored data to the mobile phone for display, and can also control the threshold setting, start the detection and reset detection through the mobile phone.
The main functions of the system are tested, and the results of alcohol detection under different concentrations are compared and analyzed. Through the physical verification, the detector can effectively judge the drunk driver and alarm the driver in time. The alcohol detector developed in this paper has the characteristics of active, real-time and simple, and can better stop drunk driving behavior.
Key words: STM32 MCU; Alcohol monitoring; Sensor; WiFi; Give an alarm
目 录
1.绪论
1.1 研究背景及其研究意义
1.2 国内外研究现状
1.2.1国外研究现状
1.3 研究目标和组织结构
2.系统方案设计
2.1 整体方案设计
2.2 主要器件选型选择
2.2.1 主控芯片方案选择
2.2.2 显示模块方案选择
2.2.3 无线传输方案选择
3.硬件电路设计
3.1 单片机最小系统
3.1.1 主控模块电路
3.1.2 晶振电路
3.1.3 复位电路
3.1.4 电源电路
3.1.5 下载电路
3.2 MQ-3酒精检测模块
3.3 OLED显示模块电路
3.4 按键电路
3.5 语音播报模块(TTS)
3.6 声光报警报警提醒电路模块
3.7 无线通信模块
4.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 OLED显示流程设计
4.5 WiFi模块子流程设计
5.实物调试
5.1 实物总体设计
5.2 酒精浓度模块实物测试
5.3WiFi模块实物测试
总结与展望
参考文献
致谢
附录
附录A：原理图
附录B：PCB
附录C：程序