Access Control System Design For Intelligent Building

This paper presents an intelligent access control system based on RFIC card for intelligent building. Intelligent access system is an important part of intelligent security management system. The intelligent access control system , the result of research have great practical significance.RFID technology is a new automatic identification technology. By bi-directional wireless communicating between the RF card and card reader via the RF mode, it can exchange data and identify object. The RF card have some advantage, such as operate fast, strong for impact, long work distance, and high security. It have wide market prospect in many aspect, such as personal identification, automatic charging and e-wallet.This paper briefly introduces the construction, function and the present research situation of intelligent access control system. Through the research in IC card technology, this paper analyzed the basis theory of RFIC and analyzed the main index, structure of storage, basis theory and communication with read-writer of Mifare1 RFIC that be used in this system. And this paper also discussed the design principle and design scheme.This paper described in detail the constitution of system, the hardware design of card reader and the software development process of system. The hardware design of card reader includes the AT89C52 microprocessor module, the interface circuit MF RC500, the antenna circuit between the MF RC500 and Mifarel and the interface circuit between the AT89C52 and the RS485.The software part of card reader mainly describe the program design of procedure of card reading that include the inquiring card , anti-conflict, choosing card and verification. The software of host computer mainly described the database design and access, the program design of serial communication and the multithread program design. At last, this paper presents the main operation interface of system.With the improvement of people' s living standard, the application range of intelligent access control system will become wide more and more.And it will take important role in wide field, such as personal safety, property safety, attendance management system of enterprise and institution and control system of park lot.