设计说明书
总字数：17000+
摘要
在日常生活中，传统水壶的使用存在诸多不便，如依赖人工监控水温、频繁手动加水、保温效果不佳等问题，难以满足现代生活对便捷性与智能化的需求。
基于 STM32F103C8T6 单片机的智能水壶设计，整合了防水式 DS18B20 温度传感器、YW-J 液位监测模块、SG90 舵机、加热棒、三个 LED 指示灯、3 个独立按键、OLED 显示屏及 ECB02 蓝牙模块，实现了水壶的自动化运行与智能控制。系统核心功能包括：通过 DS18B20 实时检测水温，启动烧水后加热棒开始工作，直至水温达到 100℃，此时触发声光报警 3 声提醒，随后进入保温模式；当水温低于设置最小值时，加热棒再次启动，加热至设置最大值。借助 YW-J 液位监测模块检测液位，当液位低于设置最小值（最小值不低于 5%）时，自动启动加水，直至达到设置最大值后停止，加水期间加热棒停止工作，待加水完成后重新启动加热至 100℃。加水时，SG90 舵机控制壶盖自动打开，加水完成后自动关闭。通过三个 LED 灯显示状态：黄灯亮表示加热电源打开，红灯亮表示正在加热，绿灯亮表示处于保温状态。支持通过 3 个独立按键设置各参数值，以及按键开启 / 关闭加热电源、一键保温。通过 OLED 显示屏实时显示各项数据。利用 ECB02 蓝牙模块将数据发送至手机端，手机端可设置各参数值，还能远程控制加热电源的开启 / 关闭及一键保温。
该智能水壶的实现，有效提升了水壶使用的自动化与智能化水平，减少了人工操作，为用户提供了便捷、高效的用水体验，同时为同类智能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；智能水壶；温度控制；液位监测；蓝牙通信
ABSTRACT
In daily life, traditional kettles have many inconveniences, such as relying on manual monitoring of water temperature, frequent manual water addition, and poor heat preservation effect, which are difficult to meet the needs of modern life for convenience and intelligence.
The intelligent kettle design based on the STM32F103C8T6 microcontroller integrates waterproof DS18B20 temperature sensor, YW-J liquid level monitoring module, SG90 servo, heating rod, three LED indicators, 3 independent buttons, OLED display and ECB02 Bluetooth module, realizing automatic operation and intelligent control of the kettle. The core functions of the system include: real-time detection of water temperature through DS18B20; after starting to boil water, the heating rod starts to work until the water temperature reaches 100℃, at which time an audible and visual alarm is triggered 3 times to remind, and then it enters the heat preservation mode; when the water temperature is lower than the set minimum value, the heating rod starts again and heats to the set maximum value. With the help of the YW-J liquid level monitoring module to detect the liquid level, when the liquid level is lower than the set minimum value (the minimum value is not less than 5%), automatic water addition is started until it reaches the set maximum value and stops. During water addition, the heating rod stops working, and restarts heating to 100℃ after water addition is completed. When adding water, the SG90 servo controls the lid to open automatically, and closes automatically after water addition is completed. Three LED lights are used to display the status: the yellow light is on to indicate that the heating power is on, the red light is on to indicate that it is heating, and the green light is on to indicate that it is in the heat preservation state. It supports setting various parameter values through 3 independent buttons, as well as turning on/off the heating power and one-key heat preservation through buttons. Real-time display of various data through the OLED display. The ECB02 Bluetooth module is used to send data to the mobile phone, which can set various parameter values, and also can remotely control the opening/closing of the heating power and one-key heat preservation.
The implementation of this intelligent kettle effectively improves the automation and intelligence level of kettle use, reduces manual operations, provides users with a convenient and efficient water use experience, and also provides a reference for the research and development of similar smart home appliances, with high practical application value.
Keywords: STM32F103C8T6; Intelligent kettle; Temperature control; Liquid level monitoring; Bluetooth communication
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 温度传感器选择
2.1.3 液位监测模块选择
2.1.4 舵机选择
2.1.5 显示模块选择
2.1.6 蓝牙模块选择
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 温度传感器电路
3.3 液位监测模块电路
3.4 舵机控制电路
3.5 显示模块电路
3.6 蓝牙模块电路
3.7 按键模块电路
3.8 LED 指示灯电路
3.9 声光报警电路
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 OLED显示子流程设计
4.4 独立按键子流程设计
4.5 温度检测模块子流程设计
4.6 ADC模数转换子流程设计
4.7 舵机子流程设计
4.8 蓝牙模块子流程设计
第 5 章 实物测试
5.1 整体实物测试
5.2 温度传感器功能测试
5.3 液位监测模块功能测试
5.4 舵机功能测试
5.5 蓝牙模块功能测试
5.6 按键设置与显示功能测试
5.7 LED 指示灯与声光报警功能测试
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
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