设计说明书
总字数：11000+
本文介绍了一种基于STC89C52单片机的水直热系统的设计方案。该系统通过多种传感器实时监测水温和水位，根据预设的阈值进行智能控制和保护。系统的主要功能包括：首先，利用防水式DS18B20传感器实时测量水温。当水温低于预设的最小值时，系统启动加热设备，自动加热水直到达到最大值，然后停止加热。其次，通过液位检测模块实时监测水位，当水位低于设置的最小值时，系统立即停止加热，并同时触发声光报警，以确保安全。此外，系统还设计了按键功能，用户可以设置水温和水位的阈值，增加了系统的灵活性。最后，系统通过LCD1602显示屏展示实时的测量数据，包括水温和水位信息，为用户提供直观的数据展示。通过上述功能，本系统能够高效、准确地监测水温和水位，实现智能化的水直热控制。该设计不仅具备在家庭、工业等领域的实际应用价值，也为类似系统的研究提供了一种有效的设计思路。
关键词：单片机；水直热系统；温度控制；液位检测；智能控制；LCD显示
Abstract
This paper presents a design scheme for a water direct heating system based on the STC89C52 microcontroller. The system employs various sensors to monitor real-time water temperature and water level, enabling intelligent control and protection based on preset thresholds. The main functionalities of the system include: firstly, utilizing a waterproof DS18B20 sensor to continuously measure water temperature. When the water temperature falls below the predefined minimum value, the system activates the heating device, automatically heating the water until it reaches the maximum value, at which point the heating is halted. Secondly, a liquid level detection module is employed to monitor the water level in real time. If the water level drops below the set minimum value, the system immediately halts the heating and triggers both sound and light alarms, ensuring safety. Additionally, the system incorporates a keypad function, allowing users to set temperature and water level thresholds, enhancing system flexibility. Lastly, real-time measurement data including water temperature and water level information is displayed on an LCD1602 screen, providing users with intuitive data visualization. Through these functionalities, the system efficiently and accurately monitors water temperature and water level, achieving intelligent water direct heating control. This design not only possesses practical value in various fields such as homes and industries, but also offers an effective design approach for similar systems.
Keywords: Microcontroller; Water Direct Heating System; Temperature Control; Liquid Level Detection; Intelligent Control; LCD Display.
目 录
1 绪 论
1.1 选题背景及实际意义
1.2 国内外研究现状
1.3 本文实现的功能
2 系统设计方案
2.1 主要模块方案选择
2.1.1 主控芯片方案选择
2.1.2 水温传感器选择
2.1.3 水位传感器选择
2.1.3 显示方案选择
2.2 整体设计方案
3 硬件设计
3.1 单片机最小系统
3.2 水温监测模块
3.3 水位监测模块
3.4 显示模块电路
3.5 按键电路设计
3.6 继电器模块电路设计
3.7 声光报警模块原理图
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 A/D模数转换子流程
4.5温度检测模块子流程
4.6 LCD1602液晶显示子流程
5仿真测试
5.1 总体仿真测试
6.2 水温监测仿真测试
6.3 水位监测仿真测试
6实物测试
6.1 总体实物测试
6.2 水温监测实物测试
6.3 水位监测实物测试
总结与展望
参考文献
致 谢
附录A 原理图
附录B PCB
附录C 程序
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