文档介绍：基于RFID技术的智能门禁系统设计(控制部分)
摘要
随着社会经济和科技的飞速发展,射频识别技术越来越广泛的应用于各种行业,如:商流、物流、信息和资金等方面,并以前所未有的速度迅猛发展,引起了许多国家的重视。特别是身份识别和安防等行业。门禁系统作为智能建筑的重要单元越来越得到重视。
门禁安全管理系统是新型现代化安全管理系统,它集自动识别技术和现代安全管理措施为一体。门禁系统可有效管理门的开启关闭,对出入人员进行监控管理。基于RFID的门禁系统通过对射频IC卡的识别,保证那些持有相应证件的人员能自由进出,阻止外来人员或无法提供证件的人员进入。还有些门禁是利用生物识别的技术,通过对人体某些部位(如眼睛、指纹)的识别来确认来人是否经过授权。这种门禁系统相对射频识别的系统安全系数有很大提高,但其成本较高,在日常生活中还未广泛应用。
文章从门禁技术的发展出发,首先介绍了射频识别技术的概念、分类及工作原理,然后介绍了本次使用的射频芯片MFRC522。本RFID系统设计可分为硬件部分和软件部分。硬件部分以MFRC522射频识别模块为核心,结合主控模块STC89C52设计系统的外围硬件电路,实现对射频卡的控制与MCU之间的互通。软件部分采用C语言进行系统的下位机程序的开发,完成与IC卡之间的通信,实现数据交换功能。
关键字: 射频识别,门禁系统,MFRC522,STC89C52
RFID-based Intelligent Access Control System
(Control Part)
Abstract
Along with the social economy and the rapid development of science and technology,radio frequency identification technology are ing more widely used in various sectors, such as trade,logistics,information and capital, with unprecedented speed rapid development,many countries have pay much more attention to it.
Access control security management system is a new type of modern safety management system, bines automatic identification technology and modern safety control system can control the time to open and close the door effectively and monitoring and management of personnel access. The RFID-based Intelligent Access control System ensure those people who hold the appropriate documents to the free access and prevent foreigners or those who can not provide documents to enter. And some Access Control is the use of biometric technology, by identify some parts of human body (such as eyes, fingerprints) to confirm the people whether be kind of Access control system is safer than the system based on RFID,but it has not used in our daily life because of its high cost.
On the basis of the development of Entrance Guard Sytem,at first this paer generally
introduces the RFID technology,including its concepts、categories and works,Then it introduces
the RF chip MFRC522 used in th