RFID Multi-tag Identification Anti-collision Algorithm For Automobile Assembly Line

To the traditional bar code technology, RFID (Radio Frequency Identification)technology has some advantages，such as further recognition distance, more flexibleread and write operations. It has been widely used in industrial automation, businessautomation, transportation management and anti-counterfeiting and many other fields.At present, many automobile manufacturers put RFID technology in automotiveproduction line for quality control and process management, vehicle and partsproduction, to improve the production efficiency of production line, to improveproduction methods and reduce production costs. It has achieved good effect. However,in the automobile assembly line, a lot of the parts to be assembled, and each componenthas its own electronic tag. In this way, a large number of tags to be identified relativelyconcentrated in the automobile assembly line, the reader and tag communicationcollision problem is particularly acute that affecting the performance of the entirerecognition system, and ultimately difficult to ensure high-speed operation of theassembly line. Therefore, the electronic tags collision problem has become a technicalbottleneck in promote the use of RFID technology in the automotive assembly line.Anti-collision algorithms are using to solve electronic tags collision problems.With in-depth study of the existing electronic tag anti-collision algorithm based on thespecific application environment of electronic tags in the automobile assembly line, thisarticle use a hybrid anti-collision algorithm (G-JDBS)based on Grouping Dynamicframed slotted ALOHA algorithm and Jump Dynamic Binary Search algorithm, toimprove the efficiency of tag identification and reduce the recognition time.The work of this paper is mainly reflected in the following aspects:First，the study of application characterized that RFID system used in automotiveproduction line. Depth study of the basic composition and the working principle ofRFID system, test and analysis the special application environment of the automotiveproduction line, study the basic characteristic of multi-label application of RFID systemin automotive production line, reveal the mechanism of collision of a car assembly linewith multi-tags.Second，proposed the RFID hybrid anti-collision algorithm. Research on thecharacteristics of applications of RFID systems in the automobile production line,research and summarize the existing RFID anti-collision algorithm, and combined with the environment of the automotive assembly production line, proposed a tagidentification applications hybrid anti-collision algorithm for automotive assemblyproduction line.Third，hybrid anti-collision algorithm simulation and experimental test. Analysisthe two types of anti-collision algorithm and its improved algorithm, and compared withthe proposed hybrid anti-collision algorithm, verified its performance by simulationanalysis and experimental test.Theoretical analysis and experimental test results show that: the proposed hybridanti-collision algorithm has better multi-tag identification efficiency to solve thebottleneck of electronic tags promoting and using in the automobile assembly line, butalso provide a new idea for RFID anti-collision algorithm.