The Design Of Anti-Collision Algorithm Based On RFID

Radio Frequency Identification(RFID) is a kind of contactless automatic identification technology, which recognize the target object and collect data automatically by radio frequency signal. RFID system possesses many typical merits such like fast identifying speed,well aptitude for environment, well reliability, long reading distance, encryption for tags’ data,high density volumetric storage and so on. Along with development of RFID technology,RFID system is more and more widely applied in transportation, logistics, supervision of food and drug and more areas.The key technique affecting RFID system developing is anti-collision of tags which is the important factor to depend system’s identifying speed and the precondition to achieve the goal of multiple tags’ identification. The main contents include:Firstly, this paper introduce the fundamental conception of RFID system and analysis two kinds of current anti-collision algorithm detailedly. On this basis, simulating the Pure ALOHA algorithm and the Slot ALOHA algorithm in this thesis.Secondly, a novel conception of couple of single-bit collision that based on the elementary query tree algorithm and two improved algorithm apply in deterministic algorithm.Simulation results show that the single-bit anti-collision could reduce times and time of total inquiries.Finally, host computer management system is designed in the Visual C# and SQL Server2008 environment. This system is consisted of six modules, including system management,in-storage management, out-storage management, in/out-storage check, goods management and RFID system. This information management system is a simple application with RFID.