An Improved Multi-State Anti-Collision Algorithm for RFID System

Anti-collision technique is a key technique and hot research in the RFID system.The binary search algorithm and some improved algorithms are compared and analyzed in detail,and the binary search algorithm for multi-state has been improved and innovative.According to the characteristics of the tags collision,the algorithm applies the obtained collision information,and abolishes the activation command to save a lot of time.Choosing the number of forks dynamically improves identification efficiency and reduces the search range.Moreover,the performance analysis shows that the algorithm has more obvious advantages than the binary search algorithm and the dynamic binary search algorithm.