设计说明书
总字数：17000+
摘要
随着智能化安防需求的日益增长，兼具便捷性与安全性的门禁系统成为现代建筑管理的重要组成部分。传统门禁系统多依赖卡片、密码等方式，存在易丢失、易泄露、管理繁琐等问题，难以满足高效、精准的身份核验需求。
基于 STM32F103C8T6 单片机的二维码门禁控制系统，整合了时钟模块、扫码枪模块、AT24C02 存储模块、显示模块、声光报警模块及按键等硬件，实现了多项核心功能：通过时钟模块获取实时时间，并支持按键修正时间；借助扫码枪模块识别用户二维码，核验通过后控制门锁开启，5 秒后自动关闭，未识别到有效用户时，同步记录当前时间并触发声光报警（持续三声）；利用 AT24C02 存储模块实现记录的掉电保存，且支持通过按键查询历史记录；通过显示模块实时展示当前时间、门锁开关状态及二维码识别结果。
该系统的实现，有效提升了门禁管理的智能化与安全性，为用户提供了便捷的身份核验方式，同时也为中小型场所的安防系统升级提供了参考，具有较强的实用价值。
关键词：STM32F103C8T6；二维码门禁控制系统；身份核验；实时记录；声光报警
ABSTRACT
With the increasing demand for intelligent security, access control systems that are both convenient and secure have become an important part of modern building management. Traditional access control systems mostly rely on cards, passwords, and other methods, which have problems such as easy loss, easy leakage, and cumbersome management, making it difficult to meet the needs of efficient and accurate identity verification.
The QR code access control system based on the STM32F103C8T6 microcontroller integrates hardware such as a clock module, code scanner module, AT24C02 storage module, display module, sound and light alarm module, and buttons, and realizes several core functions: obtaining real-time time through the clock module, which can be corrected by buttons; identifying user QR codes through the code scanner module, controlling the door lock to open after successful verification, and automatically closing after 5 seconds; when no valid user is identified, synchronously recording the current time and triggering a sound and light alarm (lasting three times); using the AT24C02 storage module to realize power-off preservation of records, and supporting query of historical records through buttons; real-time display of current time, door lock switch status, and QR code recognition results through the display module.
The implementation of this system has effectively improved the intelligence and security of access control management, providing users with a convenient way of identity verification. At the same time, it also provides a reference for the upgrading of security systems in small and medium-sized places, and has strong practical value.
Keywords:STM32F103C8T6; QR code access control system; Identity verification; Real-time recording; Sound and light alarm
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 时钟模块选择
2.1.3 扫码枪模块选择
2.1.4 存储模块选择
2.1.5 显示模块选择
2.1.6 声光报警模块选择
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 时钟模块电路
3.3 扫码枪模块电路
3.4 存储模块电路
3.5 显示模块电路
3.6 声光报警模块电路
3.7 按键模块电路
3.8 门锁控制模块电路
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 存储模块子流程
4.5 时钟模块子流程
4.6 OLED显示流程设计
4.7 扫码枪模块子流程设计
第 5 章 仿真测试
5.1 整体仿真测试
5.2 时钟模块与时间修正功能测试
5.3 扫码识别与门锁控制功能测试
5.4 存储模块与记录查询功能测试
5.5 声光报警功能测试
5.6 显示模块功能测试
5.7 按键操作功能测试
第 6 章 实物测试
6.1 整体实物测试
6.2 时钟模块与时间修正功能测试
6.3 扫码识别与门锁控制功能测试
6.4 存储模块与记录查询功能测试
6.5 声光报警功能测试
6.6 显示模块功能测试
6.7 按键操作功能测试
第 7 章 总结与展望
7.1 总结
7.2 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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