设计说明书
总字数：14000+
摘 要
积极主动的进行考勤管理工作，不仅可以端正学习态度，还有利于学校安全防范工作的开展。传统点名的考勤方式在一定程度上起到了积极的作用，但也存在占用上课时间、影响学习气氛、存在冒名顶戴等问题。随着相关技术的发展，刷卡考勤被广泛应用，首先电磁卡具有唯一性、可靠性和准确性。其次，考勤速度快，学生进入教室前刷一下卡即可，最后，由于考勤机都是由计算机后台记录，所以这种方式易于储存，方便统计。为了实现学生考勤的智能化管理，基于单片机和传感器技术设计一款学生考勤监测系统，本系统通过3张不同的RFID卡表示3个不同的学生，并通过OLED显示屏显示学生姓名、班级和学号，当按下确认按键后，未签到的属于缺勤，通过AT24C02记录时间及缺勤人学号。此外，可以通过一个按键进入查看考勤记录模式，还可以通过另外两个按键可上下查看记录，共同完成学生考勤监测。通过实物测试，该学生考勤系统基本实现了预定功能，明显提高学校考勤管理效率，可以进行普及和推广。
关键词：考勤；显示屏；单片机；测控；语音播报
Abstract
Active attendance management work, not only can correct the learning attitude, but also conducive to the development of school safety prevention work. The traditional attendance method plays a positive role to a certain extent, but there are also problems such as occupying class time, affecting the learning atmosphere, and wearing false names. With the development of related technologies, card attendance is widely used, first of all, the electromagnetic card has uniqueness, reliability and accuracy. Secondly, the attendance speed is fast, students can swipe the card before entering the classroom, and finally, because the attendance machine is recorded by the computer background, so this way is easy to store and convenient statistics.In order to realize the intelligent management of student attendance, a student attendance monitoring system is designed based on single-chip microcomputer and sensor technology. This system represents 3 different students through 3 different RFID cards, and displays the student’s name, class and student number through OLED display. When the confirmation button is pressed, those who do not sign in are absent. Record time and absentee number via AT24C02. In addition, you can enter the attendance record mode through one key, and you can also view the record through the other two keys to jointly complete the student attendance monitoring.Through the physical test, the student attendance system basically realizes the scheduled function, obviously improves the efficiency of school attendance management, and can be popularized and promoted.
Key words: Display screen; Single-chip computer; Measurement and control; Voice broadcast
目 录
第1章 绪 论
1.1 发展背景和现实意义
1.2国内外发展现状
1.3 设计功能实现
第2章 系统设计分析
2.1 系统总体设计分析
2.2 元器件选择
2.2.1 单片机的选择
2.2.2 按键的选择
2.2.3显示模块方案选择
第3章 控制系统硬件设计
3.1 单片机最小系统
3.1.1 主控模块电路
3.1.2 晶振电路
3.1.3 复位电路
3.1.4 电源电路
3.1.5 下载电路
3.2 RFID刷卡模块
3.3独立按键模块电路
3.4语音播报模块(TTS)
3.5 显示模块电路
3.6 AT24C02存储模块电路设计
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 独立按键
4.4 OLED显示流程设计
4.5 存储模块子流程
第5章 实物测试
5.1 实物焊接
5.2 实物总体设计
5.3实物功能测试
总 结
参考文献
致谢
附 录
附录1：原理图
附录2：PCB
附录3：主程序
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