分类响应限制的RFID防碰撞方法及应用

无线射频识别(RFID)在校园一卡通系统中已获得普遍使用.因为校园学生众多,情况比较繁杂,读写器碰撞与标签碰撞问题会导致较低的系统识别率,也将成为一卡通系统应用中的突出问题.针对此问题,对RFID防碰撞的动态帧时隙算法进行了改进,该算法通过分类响应限制标签个数,进而能够在标签数量很多的情况下提升系统的识别率,尤其适合应用在短时间内需要大量识别标签的校园一卡通应用环境中.仿真实验结果证明,该算法在短时间内进行大量RFID标签识别比传统时隙算法具有更高的效率.

RFID Anti-Collision Method of Blocking Sort Response Limit and Its Application

Wireless radio frequency identification (RFID) methods have been widely used in the campus card system.Because of many students in the campus,environment is more complex.The reader collision and tag collision will result in low system efficiency,which become the outstanding problems for card system application.In order to solve this problem,dynamic frame slotted algorithm for RFID anti-collision is improved.By grouping limit the number of response tag,the recognition rate can be improved in the cases of many number of labels,which is especially suitable for the application environment that requires a lot of recognition label campus card in a short time period.Finally,the experimental results demonstrate that the proposed method is more efficient than the traditional slot algorithm in a short period of time identifying a large number of RFID tag.