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The Research and Application on Core Technology of RF Cards and Readers

Author: LiangFei
Tutor: ChenYongTai
School: Wuhan University of Technology
Course: Communication and Information System
Keywords: Radio frequency identification Reader RF card Antenna
CLC: TP391.4
Type: Master's thesis
Year: 2006
Downloads: 435
Quote: 6
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Abstract

The radio frequency identification technology is a RF signal through space coupling to achieve non-contact transmission of information, technology and the message reaches identification purposes. After the rapid development in the 1990s, radio frequency identification technology is now involved in all aspects of people's lives, and has a broad application prospects. At present, the RF card system card technology and its corresponding equipment to read and write core technology is still in a backward state, which greatly restricted the development of radio frequency identification technology. Therefore, the core technology of RF card reader equipment is a very meaningful thing. RF card in the world today in the mainstream Philips MIFARE technology has been to develop as an international standard: ISO / IEC 14443 TYPE A standard. Thus, select the type of RF card reader equipment core technology conducted in-depth research. The study includes: MIFARE RF card features, functions, storage structure and Mifare 1 card reader device characteristics of the core module, pin arrangement, the working principle. On the basis of study to master the technology, this paper presents a detailed design of RF card reader device. The design includes hardware and software into two parts, hardware-specific design elements include: power supply circuit design of low-power radio frequency reader, RFID reader core module design, micro-control unit circuit design, serial communication circuit design, real-time clock circuit design, LCD display circuit design and antenna matching network design; the software specific design elements include: the operation of the host computer on the various functions of RF card program design and slave the microcontroller MSP430 microcontroller program design. The design is not for the specific application background, are made in terms of system hardware and software module design. It is relative to other RF equipment to read and write the following characteristics: 1, to achieve a low-power radio frequency reader solutions, which can be applied such as the public telephone line power, portable card readers and other applications requiring low power consumption occasion. 2, provides a variety of form of serial communication interface: RS232, RS485 and USB interfaces. Compatible with the actual use of different applications that need to use the stand-alone communications or multi-machine communication. By reading this article, I hope readers can grasp this design ideas based on the background for different applications, to develop products for various different applications, for example, access control systems, highway toll collection system, banking services, \system and so on.

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