基于STM32的智能体重秤的设计与实现
摘要
本设计提出了一种基于 STM32F103C8T6 单片机的智能体重秤。系统主要功能包括：通过 MQ-135 传感器实时监测当前环境的空气质量，为用户提供环境健康参考；借助 DHT11 温湿度传感器采集环境温度与湿度数据，辅助评估环境舒适度；利用 HX711 称重模块精准检测人体体重，测量结果精确至 0.1kg；OLED 显示屏分区实时展示体重、温湿度及空气质量数据，界面清晰直观；通过 ESP8266-WiFi 模块将所有测量数据无线传输至手机端，支持用户在移动端查看实时数据与历史记录，实现健康数据的长期追踪与管理。
该智能体重秤的作用在于，突破了传统体重秤的功能局限，构建了 “体重监测 + 环境感知 + 远程管理” 的一体化健康监测方案。通过多参数同步监测，为用户提供更全面的健康评估依据；数据的无线传输与手机端展示，方便用户随时查看与分析体重变化趋势及环境影响因素。为家庭健康管理提供了便捷、精准的智能化工具，有助于用户养成科学的健康管理习惯，提升生活质量。
关键词：单片机；智能体重秤；多参数监测；远程传输
Design and Implementation of Intelligent Weight Scale Based on STM32
Abstract
In the current era where health management is increasingly valued, weight, as an important indicator reflecting human health status, has become a focus of attention for its precise monitoring and long-term tracking. Traditional weight scales have a single function and can only display real-time weight data, lacking consideration for environmental factors and remote data management capabilities, making it difficult to meet the diversified needs of modern users for health monitoring. In addition, factors such as environmental temperature, humidity, and air quality can indirectly affect human comfort and health status. If not monitored synchronously, it will affect the comprehensiveness of health assessment. Therefore, developing an intelligent weight scale that integrates multi parameter monitoring, data visualization, and remote transmission functions has important practical significance.
This design proposes an intelligent weight scale based on STM32F103C8T6 microcontroller. The main functions of the system include: real-time monitoring of the air quality in the current environment through MQ-135 sensors, providing users with environmental health references; Collect environmental temperature and humidity data using DHT11 temperature and humidity sensors to assist in evaluating environmental comfort; Using the HX711 weighing module to accurately detect human body weight, the measurement result is accurate to 0.1kg; the OLED display screen partitions real-time display of weight, temperature and humidity, and air quality data, with a clear and intuitive interface; Through the ESP8266 WiFi module, all measurement data is wirelessly transmitted to the mobile end, supporting users to view real-time data and historical records on the mobile end, achieving long-term tracking and management of health data.
The function of this intelligent weight scale is to break through the functional limitations of traditional weight scales and build an integrated health monitoring solution of "weight monitoring+environmental perception+remote management". By synchronously monitoring multiple parameters, we provide users with a more comprehensive basis for health assessment; The wireless transmission of data and display on mobile devices make it convenient for users to view and analyze weight trends and environmental factors at any time. Providing convenient and accurate intelligent tools for family health management helps users develop scientific health management habits and improve their quality of life.
Keywords：microcontroller; Intelligent weight scale; Multi parameter monitoring; Remote transmission
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 空气质量检测模块电路设计
3.4 温湿度检测模块电路设计
3.5 体重检测模块电路设计
3.6 显示模块电路设计
3.7 无线通信模块电路设计
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 OLED显示流程设计
4.4 温湿度检测模块子流程
4.5 称重模块子流程设计
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 体重检测及显示功能测试
5.3 环境参数监测功能测试
5.4 无线数据传输功能测试
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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