基于标签分组的RFID系统防碰撞算法

Anti-collision Algorithm of RFID System Based on Grouped Tag

防碰撞算法是射频识别(RFID)系统中提高标签识别效率的关键技术。针对确定性的RFID标签防碰撞算法存在的识别效率不高、系统数据交换量大等问题,该文提出一种标签分组机制防碰撞算法,将其与融合后的二进制树搜索算法相结合,读写器系统分批次识别标签组中的标签,能有效地减少数据通信量。实验仿真结果表明,该算法相比其他几种算法,具有识别效率高、数据交换量小等优势。

Anti-collision algorithm is a key technique to improve identification efficiency in Radio Frequency IDentification （RFID） system. For this problem of the efficient identification and the large amount of data transmission, a group-based anti-collision algorithm is proposed. With the improved binary tree search algorithm combining, the tags in each group are identified by reader in turn, which can reduce the amount of data communication effectively. The simulation results show that, compared with several other algorithms, the proposed algorithm has the advantage of efficient identification and a small amount of data exchange.