One RFID Reader Design Based On ARM And Linux

With the continuous development of information technology, the internet ofthings has broad application prospects. RFID technology has also been a very widerange of applications and development as the core technology of the internet of things.RFID reader plays an important role in the RFID system as an important componentof the system, and has a lot of research value. Based on the analysis and comparisonof current RFID readers , one embedded reader design was put forward. The researchand implementation of RFID reader design based on ARM and Linux was to improvethe function of RFID reader, to improve the level of development of RFID technology,and to promote the promotion of the internet of things. In this study, two technologieswere included, one was ARM embedded technology, the other one was RFIDtechnology. The main problems to be solved were to transplant the bootloader andembedded operating system, to research RFID communication protocol andimplement communication, the main research contents include:1. Firstly, a great deal of basic research for the design was done. Status of theRFID technology, RFID system components and standards were researched. Theconcept of features, hardware and software analysis, comparison, and selection ofembedded system and so on were researched. By comparing the characteristics of thecurrent RFID readers, the advantages of selecting ARM chip as the controller wereanalyzed. By analyzing several commonly used embedded operating systems, uClinuxembedded operating system was chosed.2. By comparison, ARM7 chip S3C44B0X which has low cost, rich features,extensibility was chosed. CY14443A-C was chosed as the RFID module, which hasgood performance, simple interface, and is easy to use. Through researching theinterfaces between controller module and RFID module, design and implementationof the hardware were done. 3. The communication protocols of RFID module including sending andreceiving instruction, how to read tag were researched. Using the JTAG function ofS3C44B0X, application online simulation and debugging were achieved.4. U-Boot and uClinux source code were researched, and then were modifiedaccording to the actual hardware, compile d and transplanted. Finally , applicationswere added to uClinux, then uClinux was transplanted.The contents and results of the study provide a good mentoring to the RFIDreader front-end data collection, and are important for the development and progressof RFID technology. In this study, the RFID reader has advantages of using simple,low cost, extensibility, versatility, provides a great convenience for the user toresearch and development it.