设计说明书
总字数：12000+
摘要
随着人们对室内空气质量关注度的提升，氧气浓度作为影响人体健康的重要指标，其稳定与否直接关系到居住舒适度与身体健康。在密闭空间或特殊环境中，氧气浓度过高可能引发安全隐患，若不能及时监测和调节，会影响生活质量甚至危及安全。因此，研发一种能实时监测氧气浓度并自动调节的设备具有重要现实意义。
本设计提出一种基于 STM32F103C8T6 单片机的氧气浓度检测系统。系统主要功能包括：通过 AO-O3 氧气检测模块实时监测当前环境的氧气浓度；当检测到氧气浓度大于预设最大值时，启动两个 MX1508 驱动模块控制2个直流电机带动4个风扇转动，加速空气流通，同时触发声光报警装置发出警示；用户通过按键可设置氧气浓度最大值，并调节风扇的运行挡位（0-10 挡）；通过 OLED 显示屏实时显示氧气浓度值、风扇挡位及系统状态。
该系统的作用在于，为室内环境提供了一种智能化的氧气浓度管理方案。通过实时监测与自动调节，能够及时降低过高的氧气浓度，减少安全隐患；风扇挡位可调功能满足不同场景的通风需求；直观的显示与报警功能让用户随时掌握环境状态。整体设计操作简便、响应迅速，为家庭、实验室等场所的空气质量保障提供了便捷有效的解决方案。
关键词：单片机；氧气浓度检测；自动通风；声光报警；挡位调节
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 氧气浓度检测模块电路设计
3.4 电机驱动模块电路设计
3.5 显示模块电路设计
3.6 按键模块电路设计
3.7 声光报警模块电路设计
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 直流电机速度调节子流程设计
5 实物制作与功能测试
5.1 实物制作
5.2 氧气浓度检测及显示功能测试
5.3 风扇控制与挡位调节功能测试
5.4 超标报警功能测试
5.5 参数设置功能测试
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
购买后可查看具体内容！