%0 Journal Article %T 血液管理RFID多标签识别碰撞避免方法<br>Multi-tag identification and collision avoidance with RFIDs in blood management %A 田川 %A 叶晓俊 %A 王祖良 %A 李鑫 %J 清华大学学报(自然科学版) %D 2017 %R 10.16511/j.cnki.qhdxxb.2017.21.023 %X EPCglobal_Class1 Gen2协议标准中的动态帧时隙ALOHA标签防碰撞Q算法没有完全消除空时隙,浪费了时序资源,在血液管理这种实时性要求高、标签数量大的情况下是不能接受的。该文提出一种多标签识别碰撞避免方法,将标签识别过程分为两次时隙预分配和标签识别2个阶段,消除了Class1 Gen2协议的空时隙以提高时间利用率。对血液管理应用场景进行了数值仿真分析,结果表明该方法能够显著提高标签识别效率。<br>Abstract:The dynamic frame slotted ALOHA tag anti-collision Q algorithm in the EPCglobal_Class1 Gen2 protocol fails to remove empty slots, which leads to a waste of the slots. This is unacceptable in blood management which requires real-time handling and a large number of tags. A multi-tag identification and collision avoidance method was developed that divides the tag identification into two slot pre-assignments and tag identification. This helps eliminate empty slots in the Class1 Gen2 protocol which improves availability. Simulations of a blood management system indicate that this method significantly improves tag identification efficiency. %K 射频识别 %K 碰撞避免 %K 动态帧时隙ALOHA %K < %K br> %K radio frequency identification (RFID) %K collisions avoidance %K dynamic frame slotted ALOHA %U http://jst.tsinghuajournals.com/CN/Y2017/V57/I11/1121