| Radio Frequency Identification technology is the rapid development of a new automatic identification technology in recent years. Wireless and bidirectional communication between reader and contactless card is their communication mode and to identificate the goal and to swap data by radio frequency identifation. The power of IC card circuit is supplied by the power of electromagnetic wave from reader. Compared with contact IC card, contactless IC card has some characteristics such as reliability, security and convenience.The contactless IC card reader developed by this issue with its stable performance and cheap price meets the demand of the actual project, especially for the design of open-access control system. In addition, developers can also develop the reader again. Only modified the software, it can be applied to consumer electronics, such as eatery service, transit, Metro e-ticketing, and so on.The article briefly introduced the topic background,dynamic studies at home and abroadand,and the structure of papers; Introduces the basic theoretical knowledge of the radio frequency identification system,includes the ISO/IEC14443 protocol farmwork and the Philips' Mifare card characteristics, work principle, internal structure, operation of internal EEPROM memory, etc; The hardware design of the radio frequency card reader, includes includes MCU control module design, radio frequency module design, serial communication module design etc; The software design covers the basic instruction system of the radio frequency station chip FM1715, the operation program design of the radio frequency card etc; Researching on existing algorithms for tag anti-collision, analyzing their characters and problem. And this paper mainly introduces the binary tree-like anti-collision algorithm and analyzes the relative performance through simulation; At last, I summarize the whole paper, the lack of item is analyzed, and the future problem is proposed. |
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