设计说明书
总字数：15000+
摘 要
随着城市规模的扩大及其经济的快速发展，交通的需求量越来越大，随着车辆的数量较多，使得道路较为堵塞，交通事故频发。因此设计一款系统较为完善的检测系统来对车辆进行监测具有重要研究意义。本文基于单片机设计一款汽车行驶自动检测系统，通过薄膜式压力传感器检测座位是否有人，如果有人，接着通过红外对射管检测是否系安全带，如果未系，语音提醒司机“请系好安全带”；通过MQ-3传感器检测司机酒精值，当酒精值大于设置最大值，语音提醒司机“酒精浓度过高，禁止驾车”；通过MLX90614检测人体体温，当体温大于设置最大值，则提醒司机“体温过高，请停车休息”；通过心率传感器检测心率值，当心率大于设置最大值，语音提醒司机“心率过高，请停车休息”；此外，通过4G模块，将传感器检测到的实时数据及GPS定位发送到手机端，从而实现系统的监测和提示功能。实物测试，该系统基本能实现预定功能，为汽车的安全行驶提供可靠性保障，所以，该系统有很大的应用前进。
关键词：汽车行驶；单片机；传感器；语音；4G
Abstract
With the expansion of urban scale and rapid economic development, the demand for transportation is increasing. With the increasing number of vehicles, roads are becoming congested and traffic accidents occur frequently. Therefore, designing a relatively complete detection system to monitor vehicles is of great research significance.This article designs an automatic detection system for car driving based on a microcontroller, which uses a thin film pressure sensor to detect whether there is someone in the seat. If there is someone, it then uses an infrared beam to detect whether the seat belt is fastened. If it is not fastened, the driver is reminded by voice to “Please fasten the seat belt”; Detect the driver’s alcohol level through the MQ-3 sensor. When the alcohol level is greater than the set maximum value, the voice prompts the driver to “prohibit driving if the alcohol concentration is too high”; Detect human body temperature through MLX90614, and when the temperature exceeds the set maximum value, remind the driver to “stop and rest if the temperature is too high”; Detect the heart rate value through the heart rate sensor. If the heart rate exceeds the set maximum value, the driver will be reminded by voice that “the heart rate is too high, please stop and rest”; In addition, through the 4G module, real-time data detected by sensors and GPS positioning are sent to the mobile phone to achieve system monitoring and prompt functions. Through physical testing, the system can basically achieve the predetermined functions and provide reliability assurance for the safe driving of cars. Therefore, the system has great application prospects.
Keywords：car driving; Single chip microcomputer; Sensors; Voice; 4G
目 录
摘 要
Abstract
第一章 绪论
1.1 研究背景及意义
1.2 国内外研究现状
1.2.1国内外研究现状
1.2.1国外研究现状
1.3 论文的主要内容
第二章 系统总体设计方案
2.1系统总体设计
2.2主要模块方案选择
2.2.1 主控模块方案选择
2.2.2 体温体检测模块方案选择
2.2.3 心率检测模块方案选择
第三章 硬件设计
3.1 主控模块电路设计
3.2 酒精检测模块电路
3.3 心率检测模块电路
3.4 体温检测模块
3.5 薄膜压力监测模块电路
3.6红外对射管监测模块电路设计
3.7 GPS检测模块
3.8 显示模块电路
3.9 按键模块电路设计
3.10 语音输出模块电路
3.11 4G模块电路
第四章 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 温度检测模块子流程
4.5 OLED显示流程设计
第五章 实物制作与调试过程
5.1 电路焊接总图
5.2 体温监测模块实物测试
5.3 心率测模块实物测试
5.4 酒精浓度监测模块实物测试
5.5 安全带监测模块实物测试
第六章 结论
参考文献
附录A：原理图
附录B：PCB
附录C：主程序
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