基于RC522的RFID门禁系统的设计.docVIP

基于RC522的RFID门禁系统的设计 The intelligent entrance guard system is very common in automation applications, it provides convenience and guarantee peoples life safety of peoples daily life, along with the development of society and economy, the intelligent recognition technology has been used in many industries, especially the safety coefficient of particularly high industry (bank), gated industry, convenience and security intelligent access control system to make it more and more attention.The intelligent entrance guard system gathered with computer technology,electronic technology ,mechanical technology,magnetic electric technology and radio frequency identification technology.Access Control System makes card and lock get “integrity dialogue” function.That smart card to control the open or close of the doors,introduces a new management concept,which not only manager can provide a safe,faster,more automated management style,but also offer the users,a great convenience.In this paper,we research on the design of radio frequency identification Access Control System. Analysis of the design of the RFID access control system at home and abroad,the future development trend and main problems, put forward a design scheme of access control system based on RFID. First elaborated the basic principle, system composition of RFID access control system, analyzes the system hardware circuit design, software design, hardware design, selection of the sub circuit subroutine design, serial communication program design in detail. Access control system using AT89C52 micro controller as control core, theMFRC500 card control module, RF circuit, watchdog reset circuit, alarm circuit,electric control lock control circuit. Through the keyboard input analog card reader reads data in the simulation system, using a password and the password comparison, control the import permission on the channel (control password door); in exceptional circumstances (illegal intrusion, not closing the door overtim