关键词: 防碰撞, 射频识别, 预处理机制, 多状态二进制, 动态二进制

Abstract: As there is redundant communication data in multi-state binary algorithm of anti-collision, information preprocessing and partly receive mechanisms are introduced for algorithm improvements. Only the collision information is dealing with in the identification process, and reader only receives part data from tags, avoiding data sent and received repeatedly. Different instructions make state flags self-change, thus the interaction times and the communication data are reduced greatly. Simulation for the algorithm is done in Java. The results show that the new algorithm has obvious advantages in reducing the communication data when the collision bits are not continuous, and collision rate is lower 25%. Excluding the information pretreatment, the new algorithm has more significant advantage at any collision rate.

Key words: anti-collision, radio frequency identification, pretreatment mechanism, multi-state binary, dynamic binary