设计说明书
总字数：18000+
摘要
随着道路交通流量的增加和驾驶安全意识的提升，对汽车行驶过程中的安全监测成为保障道路安全的重要环节。酒驾、超速、疲劳驾驶等违规行为若不能及时监测和干预，可能会引发严重的交通事故，危及驾乘人员及他人生命财产安全。因此，研发一种能全面、实时监测驾驶状态并主动预警的系统十分必要。
本设计提出了一种基于 STM32F103C8T6 单片机的汽车安全驾驶监测系统。系统主要功能包括：通过 GPS 模块获取当前车辆经纬度；借助 KY-003 霍尔传感器检测行驶速度，速度超限时进行声光报警；通过 MQ-3 模块检测酒精浓度，超标时语音播报警示信息并禁用车辆，同时触发声光报警；车辆启动后自动计时，超时则通过 CN-TTS 模块语音提醒疲劳驾驶并报警；用户通过按键设置各阈值及调节行驶速度；通过 OLED 显示屏展示各类数据；通过 ECBO2 蓝牙模块将数据传输至手机端，支持手机远程设置参数和调节速度。
该系统的作用在于，为汽车驾驶提供了一种全方位的安全监测与预警工具。通过实时监测关键驾驶参数并主动干预危险状态，能够有效预防酒驾、超速、疲劳驾驶等违规行为，降低交通事故发生率，保障驾驶安全。
关键词：单片机；汽车安全监测；酒驾检测；速度预警；疲劳驾驶提醒
Design of Electronic Blood Pressure Monitor Based on Single Chip Microcomputer
Abstract
With the improvement of living standards and the enhancement of health awareness, monitoring blood pressure and heart rate has become an important part of people’s attention to their own health. For middle-aged and elderly people, abnormal fluctuations in blood pressure and heart rate, if not monitored and treated in a timely manner, may lead to serious health problems and even endanger their lives. Therefore, it is necessary to develop a device that can conveniently and accurately monitor blood pressure and heart rate.
This design proposes an electronic blood pressure monitor based on STM32F103C8T6 microcontroller. The main functions of the system include: detecting the current user’s diastolic and systolic blood pressure through the blood pressure detection module; Using a heart rate detection module to measure the current user’s heart rate; The user initiates the measurement by pressing a button; When abnormal heart rate or blood pressure is detected, the system will sound and light an alarm; Display measurement values through OLED; At the same time, the system stores the detected blood pressure through a storage module, which can hold up to 20 sets, and users can view them by pressing a button.
The function of this electronic blood pressure monitor is to provide people with a convenient and effective tool for monitoring blood pressure and heart rate. By timely monitoring and alerting, it can help people detect health hazards as early as possible, facilitate timely measures, ensure physical health, and improve quality of life.
Keywords： microcontroller; Electronic sphygmomanometer; Blood pressure monitoring; Heart rate monitoring
目 录
1 绪论
1.1 研究背景及意义
1.2 国内外研究现状
1.3 主要内容
2 系统总体方案设计
2.1系统总体设计
2.2 主要模块方案选择
3 系统硬件设计
3.1 总体硬件框架
3.2 主控模块电路设计
3.3 速度检测模块电路设计
3.4 酒精检测模块电路设计
3.5 GPS 定位模块电路设计
3.6 语音模块电路设计
3.7 显示模块电路设计
3.8 按键模块电路设计
3.9 声光报警模块电路设计
3.10 电机驱动模块电路设计
3.11 通信模块电路设计
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 GPS模块子流程设计
4.6 语音播报模块子流程设计
4.7 直流电机速度调节子流程设计
4.8 蓝牙模块子流程
4.9 ADC模数转换子流程设计
5 实物制作与功能测试
5.1 实物制作
5.2 环境参数检测及显示功能测试
5.3 速度超限报警功能测试
5.4 酒精检测与控制功能测试
5.5 疲劳驾驶提醒功能测试
5.6 按键控制与蓝牙通信功能测试
6 总结
参考文献
致谢
附录A 原理图
附录B PCB
附录C 主程序
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