The Research And Design Of Reader Based On Mifare Radio Frequency Card

The radio frequency card was brought forth by both semiconductor technology and ever-increasing social requirements for information security. It is a integrate product of the radio frequency identification technology and the IC card technology, which solves the problems of non-energy and non-contact in the card. Compared with the contact IC card which used usually recently, the radio frequency card has many merits: high reliability, operation speed and confidentiality, then it begins to be used in many areas, and it will be used widely later. So, to research and design the RF card system has great practical value.The RF card reader is the important components of the RF card application system, based on the researching on the correlate theory and technology of the radio frequency card system, a high-performance, low-Power radio frequency card reader was designed based on STC89C53 and MF RC530 which is a radio frequency station chip. Firstly, the paper gives the basic concept of RF card technology and introduces the Philip's MIFARE radio frequency card in detail. Then, it introduces the MF RC530 which is a radio frequency station chip in detail, based on which the radio frequency interface circuit and antenna was designed. The communication of the radio frequency card system is also a keystone of the paper, which brings forward the correlative content of communication between PCD and PICC in international standardization ISO/IEC 14443, and designs the communication protocol and communication mode of the serial communication between reader and PC in detail. At last it gives the hardware and software design of radio frequency card reader, which mainly includes MCU control module, radio frequency module, communication module, clock module, display module, etc.The experiment result indicates that the maximal communication distance between the reader and the radio frequency card is beyond 7cm, and it has some characteristics such as security, reliability, low-power etc, which is satisfied by the demand of practical application.