基于单片机RFID的智能考勤系统.docxVIP

PAGE PAGE ii PAGE PAGE ii 摘 要 “考勤管理系统”是以RFID射频卡为信息识别载体的适用于学校的考勤管理系统。本系统可使老师摆脱传统的点名模式。结合网络通信技术和单片机技术，实现了学校的自动考勤，节约了考勤时间，提高了考勤效率和准确率。 该设计由显示屏和USB电源线等设备组成，STC89C52单片机主要是作为控制芯片进行使用，用于对IC卡数据的处理，基于RFID的射频系统主要用于对IC卡信息的采集，12864液晶显示屏用于对系统的相关信息进行显示，本系统的在对电源设计时采用了电容及稳压芯片，保证了电源的稳定性，对USB电源进行了5V转3.3V的电源转换，基于MFRC522射频识别的智能考勤系统是以射频识别模块为核心，单片机芯片对数据进行处理加工，通过上位机软件进行控制。采用的STC89C52开发环境为Keil uVision4。 关键词：考勤管理系统，RFID射频技术，单片机 Abstract Attendance Management System is a school attendance management system based on RFID radio frequency card as the carrier of information identification. This system can make teachers get rid of the traditional roll call mode. Combined with network communication technology and single-chip microcomputer technology, the automatic attendance at school is realized, the attendance time is saved, the attendance efficiency and accuracy are improved. The design consists of display screen and USB power cord. STC89C52 single-chip microcomputer is mainly used as a control chip, for processing IC card data. RFID-based RF system is mainly used to collect IC card information, 12864 that liquid crystal display screen is use for displaying information relate to the system. The system adopts capacitor and voltage stabilizer chip to ensure the stability of the power supply. The USB power supply is converted from 5V to 3.3 V. The intelligent attendance system based on MFRC522 RFID takes RFID module as the core, and the single-chip microcomputer chip processes the data, which is controlled by the upper computer software. The STC89C52 development environment is Keil uVision4. Key words: Attendance management system, RFID radio frequency technology, Single chip microcomputer 目 录 TOC \o 1-3 \h \u 前 言 1 1 单片机RFID签到系统需求分析 3 1.1 市场需求分析 3 1.2 功能需求分析 3 1.3 硬件需求分析 3 1.4 可行性分析 4 1.4.1 技术可行性分析 4 1.4.2 经济可行性分析 4 2 系统硬件设计 5 2.1系统硬件设计框图与元器件选择 5 2.2系统设计构思 6 2.2.1 硬件电路图 6 2.2.2单片机最小系统 6 2.3高频RFID卡的介绍 7 2.3.1存储结构 7 2.3.2工作原理 8 2.3.3