设计说明书
总字数：17000+
摘要
随着生活品质的提升，家庭对豆浆机的智能化、便捷化需求日益增长。传统豆浆机多依赖人工控制加水、研磨和加热过程，存在操作繁琐、参数控制不准确等问题，难以满足现代家庭高效、安全的使用需求。
基于 STM32F103C8T6 单片机的智能豆浆机，整合了两个液位触发传感器、防水式 DS18B20 水温传感器、SG90 舵机、MX1508 电机驱动模块、按键、OLED 显示屏、声光报警装置及 ESP8266 WiFi 模块，实现了豆浆制作的全流程自动化。系统核心功能包括：按照预设流程完成豆浆制作（加水至顶部液位触发停止→粗磨 10s→细磨 10s→加热至设置温度→声光报警 3 次）；通过液位传感器监测液位，粉碎或加热时液位异常则报警并停止工作；防水式 DS18B20 检测水温，达到设置最大值时停止加热；SG90 舵机控制盖子开关，盖子打开时豆浆机不工作；支持通过按键设置加热温度、粗磨和细磨时间，以及启停豆浆机、控制盖子开关和执行下一步操作；OLED 显示屏实时显示温度、液位、盖子状态、倒计时及当前步骤；借助 WiFi 模块将数据传输至手机端，手机端可远程设置参数和控制设备。
该系统的实现，有效提升了豆浆机的自动化与智能化水平，减少了人工干预，确保了豆浆制作过程的安全与精准，为家庭提供了便捷、高效的豆浆制作解决方案，同时为同类厨房小家电的研发提供了参考，具有较高的实际应用价值。
关键词：STM32F103C8T6；智能豆浆机；自动控制；传感器；WiFi 通信；OLED 显示
ABSTRACT
With the improvement of living standards, families have an increasing demand for intelligent and convenient soybean milk machines. Traditional soybean milk machines mostly rely on manual control of water addition, grinding, and heating processes, which are cumbersome to operate and inaccurate in parameter control, making it difficult to meet the efficient and safe usage needs of modern families.
The intelligent soybean milk machine based on STM32F103C8T6 single-chip microcomputer integrates two liquid level trigger sensors, a waterproof DS18B20 water temperature sensor, an SG90 servo, an MX1508 motor driver module, buttons, an OLED display, an acousto-optic alarm device, and an ESP8266 WiFi module, realizing the full-process automation of soybean milk production. The core functions of the system include: completing the soybean milk production according to the preset process (adding water until the top liquid level trigger stops → rough grinding for 10s → fine grinding for 10s → heating to the set temperature → acousto-optic alarm for 3 times); monitoring the liquid level through the liquid level sensor, and if the liquid level is abnormal during grinding or heating, an alarm will be given and the work will stop; the waterproof DS18B20 detects the water temperature and stops heating only when it reaches the set maximum value; the SG90 servo controls the opening and closing of the lid, and the soybean milk machine does not work when the lid is open; it supports setting the heating temperature, rough grinding and fine grinding time through buttons, as well as starting/stopping the soybean milk machine, controlling the lid switch, and executing the next operation; the OLED display real-time shows the temperature, liquid level, lid status, countdown and current step; with the help of the WiFi module, data is transmitted to the mobile phone, and the mobile phone can remotely set parameters and control the device.
The implementation of this system effectively improves the automation and intelligence level of the soybean milk machine, reduces manual intervention, ensures the safety and accuracy of the soybean milk production process, provides a convenient and efficient soybean milk production solution for families, and also provides a reference for the research and development of similar kitchen appliances, with high practical application value.
Keywords:STM32F103C8T6; Intelligent Soybean Milk Machine; Automatic Control; Sensor; WiFi Communication; OLED Display
目录
第1章 绪论
1.1 研究的目的及意义
1.2 国内外发展情况
1.3 本文主要研究内容
第2章 设计思路与方案论证
2.1 主要元器件选择
2.1.1 主控芯片选择
2.1.2 电机驱动模块选择
2.1.3 液位检测模块选择
2.1.4 舵机选择
2.1.5 通信模块选择
2.1.6 显示模块选择
2.1.7 按键模块选择
2.2整体设计方案
第 3 章 硬件设计
3.1 主控电路模块
3.2 电机驱动与研磨电路
3.3 液位检测电路
3.4 水温检测与加热电路
3.5 舵机与盖子控制电路
3.6 显示与按键电路
3.7 声光报警与 WiFi 通信电路
第4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设计
4.5 OLED显示流程设计
4.6 直流电机速度调节子流程设计
4.7 舵机子流程设计
4.8 WiFi模块子流程设计
第 5 章 实物测试
5.1 整体实物测试
5.2 液位检测与加水功能测试
5.3 研磨与电机驱动功能测试
5.4 水温检测与加热功能测试
5.5 舵机与盖子联动功能测试
5.6 显示与按键设置功能测试
5.7 WiFi 通信与远程控制功能测试
5.8 全流程自动化测试
第6章 总结与展望
6.1 总结
6.2 展望
致谢
参考文献
附录
附录一：原理图
附录二：PCB
附录三：主程序
购买后可查看具体内容！