设计说明书
总字数：19000+
摘要
随着水资源管理精细化需求的提升以及智能家居领域的快速发展，对水流量、水温的精准监测与智能控制成为水资源高效利用和生活便捷化的重要需求。无论是家庭用水管理、小型工业用水计量，还是智能家居场景下的用水控制，若缺乏对水流量、水温的有效监测与调控，不仅可能造成水资源浪费，还可能因水温异常影响使用体验。因此，研发一种具备水流量测量、水温监测、智能控制及数据传输功能的系统具有重要现实意义。
本设计提出了一种基于 STM32F103C8T6 单片机的水流量测量系统。系统主要功能包括：通过 YF-S401 水流量传感器实时获取当前的用水量；借助 DS18B20 温度传感器检测当前水温，当水温超出预设的上下限值时，系统自动触发声光报警进行提醒；用户可通过 K2 按键启动抽水继电器实现抽水操作，通过 K3 按键停止抽水，同时可通过按键自主设置水温上下限以及水的单价（其中 0-10 升区间按每升 2.0 元计费，10 升以上区间按每升 2.4 元计费）；通过 OLED 显示屏实时显示水温、水流量、水单价及水总价等关键数据；此外，系统搭载 ESP8266-12F WiFi 模块，可将所有监测与计算数据传输至手机端，用户还能通过手机端远程控制水泵的开关状态。
该水流量测量系统的作用在于，为用户提供了一套集水流量计量、水温监测、智能控制与远程管理于一体的解决方案。通过精准的流量计量与动态计费，有助于提升水资源利用效率，减少浪费；水温监测与报警功能保障了用水安全性与舒适性；远程控制功能则进一步提升了系统使用的便捷性，满足了现代生活与生产中对水资源智能化管理的需求。
关键词：STM32F103C8T6；水流量测量；水温监测；WiFi 数据传输；远程控制
Abstract
With the increasing demand for refined water resource management and the rapid development of smart home technology, precise monitoring and intelligent control of water flow and temperature have become important requirements for efficient utilization of water resources and convenient living. Whether it is household water management, small-scale industrial water metering, or water control in smart home scenarios, the lack of effective monitoring and regulation of water flow and temperature may not only result in water resource waste, but also affect the user experience due to abnormal water temperature. Therefore, developing a system with functions such as water flow measurement, water temperature monitoring, intelligent control, and data transmission is of great practical significance.
This design proposes a water flow measurement system based on STM32F103C8T6 microcontroller. The main functions of the system include: real-time acquisition of current water consumption through YF-S401 water flow sensor; Using DS18B20 temperature sensor to detect the current water temperature, when the water temperature exceeds the preset upper and lower limits, the system automatically triggers an audible and visual alarm for reminder; Users can activate the pumping relay through the K2 button to achieve pumping operation, and stop pumping through the K3 button. At the same time, users can independently set the upper and lower limits of water temperature and the unit price of water through the buttons (where the 0-10 liter range is charged at 2.0 yuan per liter, and the range above 10 liters is charged at 2.4 yuan per liter); Real time display of key data such as water temperature, water flow rate, water unit price, and water total price through OLED display screen; In addition, the system is equipped with ESP8266-12F WiFi module, which can transmit all monitoring and calculation data to the mobile phone. Users can also remotely control the on/off status of the water pump through the mobile phone.
The function of this water flow measurement system is to provide users with a solution that integrates water collection flow measurement, water temperature monitoring, intelligent control, and remote management. Accurate flow measurement and dynamic billing can help improve water resource utilization efficiency and reduce waste; The water temperature monitoring and alarm function ensures the safety and comfort of water use; The remote control function further enhances the convenience of system use and meets the demand for intelligent management of water resources in modern life and production.
Keywords：STM32F103C8T6; Water flow measurement; Water temperature monitoring; WiFi data transmission; remote control
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 水流量检测模块电路设计
3.4 水温检测模块电路设计
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
3.8 WiFi 通信模块电路设计
3.9 继电器控制模块电路设计
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 温度检测模块子流程
4.5 OLED显示流程设计
4.6 WiFi模块子流程设计
5 实物制作与功能测试
5.1 实物制作
5.2 水流量与水温检测及显示功能测试
5.3 水温异常声光报警功能测试
5.4 参数设置与水泵控制功能测试
5.5 WiFi 远程数据传输与控制功能测试
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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