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The Research and Design on Structure of UHF RFID System

Author: ZhaoJing
Tutor: HeZuoGang
School: Hunan University
Course: Theory and New
Keywords: UHF radio frequency identification technology ISO / IEC 18000-6 Convolutional code LabVIEW
CLC: TP391.44
Type: Master's thesis
Year: 2009
Downloads: 352
Quote: 2
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Abstract


RFID technology is an automatic identification technology for non-contact bidirectional communication of a radio using RF. UHF radio frequency identification technology is a radio frequency identification technology, has fast read and write speeds, the recognition distance advantages, is currently a hot research direction of the RFID. Firstly, the system introduces the development process of the RFID system and application status; comparative study of the existing three standard RFID system; introduces the development direction of the RFID technology. While in the introduction of a typical RFID system, analyzing the UHF RFID system structure and the similarities and differences of the ordinary RFID, leads to the the UHF system's overall design. ISO / IEC 18000-6 protocol-depth analysis, according to the agreement calls for the UHF system design; signal modulation and demodulation, encoding and decoding, and anti-collision control important function module to carry out a detailed analysis and design; and use NI LabVIEW software digital modem module and baseband coding module functional simulation. These program modules can be used alone, also can be used as a sub-module is embedded in the larger project to build a large-scale RF test platform provides a number of useful functional components, to avoid duplication of development and design. In this paper, a one-time read rate problems arise in the application of the UHF RFID system, the new and improved structure. In this paper, after the analysis of the communication system commonly used error control design the codec module having an error correction capability of the convolutional code in the parity check code portion cascades. This scenario the cost of increased hardware complexity to reduce duplication communication time, thereby improving the the UHF system reliability and practicality. The key structure - Viterbi decoder module design and simulation using the LabVIEW platform. In this thesis, all designed by LabVIEW software simulation. LabVIEW NI virtual instrument development platform, with simple intuitive graphical programming, a number of source-level device driver, a wide variety of hardware card support for users to quickly build the required test control platform. Software radio ideological structures UHF radio frequency identification system, provides a simple and intuitive platform for research and testing of UHF radio frequency identification technology.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Optical pattern recognition devices
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