Design And Implementation Of2.4GHZ High-Capacity Active RFID Tag System Based On Cortex-M3

As a kind of automatic identification technology, RFID (Radio FrequencyIdentification) has been widely used in vehicle management of logistics, car parkentrance guard system, personnel identification, bus management system, public safety,and many other fileds.After years of technology accumulation and marketapplication,the technology and product of RFID has been very mature,Especially thepassive RFID system.But active RFID system is still in the stage of enaction of standardand industrialization. Active RFID system is confronted with standards lag behind thetimes, high power consumption, and a series of problems such as information security.Without the corresponding international standard, our country launched a2.45GHzactive RFID air interface protocol standard, came to the forefront of the industrystandards. But the implementation and industrialization of the standard has a long wayto go.According to the Broad Application Prospects of active RFID system and theproblem of industrialization, the national standardization management committee issuesa standard which is the national standard GB/T28925-2012named “the informationtechnology, radio frequency identification2.45GHz air interface protocol.” Thisstandard makes our country into the world advanced level. This paper implements a setof2.45GHz active RFID system based on the latest standards, studies those problemsthat may encounter when we implement the standard, the main contents this thesisresearched are:1. According to the problem of file storage requirements in active RFID tag, thispaper designes and implementes a file system for active RFID tag which is compatiblewith GB/T28925-2012standard. This paper makes an in-depth research on the filesystem and security interface design.2. Access to the active RFID binary tree anti-collision algorithm were studied, andthe last frame on CC2520rf module is implemented into a binary tree access collisionalgorithm, and the algorithm performance of algorithm implementation hardwarerequirements and the effects of the specific environment are further analyzed. 3. Combining with the new2.45GHz air interface protocols standard implements aset of active RFID tag system based on CC2520which includes: RFID reader device,electronic tags, demo software for Function demonstration.4. Make a brief introduction to the active RFID system’s security problem, and thenimplements the secure authentication and identification algorithm based on Ellipticcurve cryptography in the active RFID system.5. This thesis makes an in-depth study of the low power thechnology of RFIDsystem, and implements a low-power mechanism named dynamic frequency adjustmentbased on the characteristic of the hardware NXP lpc1758.