摘要:随着信息化时代的飞速发展，保障居民建筑的安全性也愈发重要，为了满足用户的各种需求，门禁系统应运而生。门禁系统是一种以智能射频卡来控制门锁开启的新技术，给用户提供了更安全、更实用、更自动化的管理方法。为此，本文研究了一种基于射频识别的门禁管理系统。76324

本文完成了射频识别的门禁管理系统的总体设计，本设计以MF RC500模块为核心，并包含了MCU、天线电路、液晶显示电路、看门狗电路、存储电路以及时钟电路，完成了门禁系统的总体框架。设计系统可以识别PHILIPS公司的MIFARE射频卡，读卡距离可以达到100mm。当没有卡进入读卡范围区域时，系统将显示时钟；当有卡进入范围时，则门锁开启且读卡内数据将卡号信息显示在液晶显示器上。是一种结构简单、性能稳定、智能化的门禁系统，具有一定的实用价值。

毕业论文关键词:门禁系统；射频识别；MF RC500；读卡器。

Abstract：With the rapid development of information era, and ensure the safety of the residential buildings are more important, in order to meet the perse needs of users, entrance guard system came into being。 Entrance guard system is a kind of intelligent RF card to control the new technology of the door open, provide users with a safer, more practical, more automated management methods。 To this end, this paper studies a kind of entrance guard management system based on RFID。

This paper completed the overall design of RFID access control management system, the design of MF RC500 module as the core, and consists of MCU, antenna circuit, liquid crystal display circuit, watchdog circuit, storage circuit and clock circuit, completed the overall framework of entrance guard system。 Design system can identify the PHILIPS company of RF card, MIFARE card read distance up to 100 mm。 When there is no card into card read range area, the system will display the clock; When a card into the scope, the door opened and read the card data card number information display on the LCD。 Is a kind of simple structure, stable performance, the intelligent entrance guard system, has a certain practical value。

Keywords：Access Control System; Radio Frequency Identification; MF RC500; Proximity Coupling Device。

目   录

1  绪论 3

1。1  课题的背景和意义 3

1。2  国内外研究发展现状 3

2  门禁系统的技术基础 4

2。1  射频识别技术简介 4

2。2  射频识别技术原理 5

2。3  射频识别系统的典型结构 5

3  基于射频识别的门禁系统总体设计 6

3。1  系统总体方案设计 6

3。1。1  系统设计的目标 6

3。1。2  系统方案 7

3。2  射频读写模块设计 7

3。3  MF RC500 8

3。4  天线配置 10

3。5  RS-485通讯模块 11

3。6  外围接口电路 13

3。6。1  看门狗电路 13

3。6。2  液晶模块 14

3。7  AT24C64存储设计