基于标签序列号扩展分组的防碰撞算法

射频识别(RFID)标签识别技术普遍应用在物流和零售行业等工业领域.为了解决多标签识别过程中信息传输时延过长的问题,在系统分析了当前多标签识别技术中的关键技术(特别是标签防碰撞技术)的优劣后,提出了一种基于标签序列号扩展分组的防碰撞算法.该算法在曼彻斯特编码的基础上,增加了递归分组的标签识别方法.该方法改变了现有算法中...

Anti-Collision Algorithm Based on Extended Packet Label Serial Number

Radio frequency identification(RFID)tag identification technology is widely used in logistics and retail industry.In order to solve the problem of long delay of information transmission in the process of multi-tag identification.After systematically analyzing the advantages and disadvantages of the key technologies in the current multi-tag identification technology(especially the anti-collision technology of labels),an anti-collision algorithm based on the extended grouping of label serial Numbers is proposed.Based on Manchester coding,this algorithm adds a recursively grouped tag recognition method.This method changes the information interaction logic between reader and tag in the existing algorithms,and uses the error-code feature in Manchester coding to reverse the collision bit of tag,thus effectively simplifying the communication delay of reader recognition of multiple tags.Compared with the existing algorithms,this algorithm has a higher tag recognition efficiency in the field of multi-tag recognition technology,can quickly identify multiple tags in a very short time,effectively improve the capacity of the system,and ensure the stability and reliability of the tag recognition system.