The RFID Reader Research Based On MF RC500

Radio Frequency Identification(RFID) is known as a contactless automatic identification technique, which involves not only Radio Frequency technology, but also computer, cryptography, communication fundamentals and semiconductor integrated circuit and auto control technologies. Featured with the unique contactless and simultaneous multi-object identification, this technique has been widely used in many areas such as industry production and life expenditure.The first part of the thesis aims at introducing the Radio Frequency Identification technique's development and application home and abroad. Then the constituting of RFID, its working theory and classification are summarized. Later, it expound the basic theory of coding and modulation, and the ways of its realization in the RFID system. It has brought forward the issues of data integrality and data security. The former can be solved by parity checking and CRC checking, while the latter can be solved by three pass authentication and DES.Then, the anti-collision problem in RFID system is introduced, and the binary searching angorithm is realized in chips. The structure function,working theory and inosculate technique of MIFARE1 card are introduced.Moreover, it has stressed the main particularity structure theory and representative use. According to the standard of ISO/IEC 14443A, it gives a solution of design, and implementation for RFID Read-write device hardware and software, which is based on the key character and internal structure of MF RC500 chip. Integrated with the peripheral interface circuits, the Reading-writing operating to MIFARE1 card is processed by the control and communication between STC89C52RC and MF RC500 .At last, the implementation results show that the system is reliable in application, the solution is simple in hardware and easy for second-developing.