摘要： 针对读写器密集分布且位置固定，标签在其读写范围内移动的RFID系统需要对标签进行识别和跟踪的问题，提出一种改进的虚拟路由跟踪算法，对移动的标签进行跟踪，分析当标签同时被多个读写器读取或被读写器漏读时数据出现异常的处理方法。结果证明该算法可减少误差引入的来源，并且在处理异常情况时不受读写器个数的限制，保证当标签被多个读写器同时读取或被读写器漏读时，仍能够对标签进行跟踪，使得RFID读写器网络有较好的鲁棒性。

关键词: 无线射频识别, 读写器网络, 跟踪, 定位, 虚拟路由跟踪算法, 移动标签

Abstract: According to the situation that readers are distributed densely and tags move randomly, it is necessary for Radio Frequency Identification(RFID) system to identify and track tags. This paper proposes an improved Virtual Route Tracking(VRT) algorithm to tracking tags, and comes up with the method to process the abnormal situation that a tag is inducted by more than a reader at the same time or leaked by readers. The results show that the algorithm reduces error sources of introduction and beyond the restrictions of reader number, so that the tag is always tracked even in abnormlities, and ensures that the RFID network has preferable robustness.

Key words: Radio Frequency Identification(RFID), reader network, tracking, location, Virtual Route Tracking(VRT) algorithm, moving tag

中图分类号: 

• TN911.23