一种有效的超高频RFID读写器防冲突技术  

An Efficient Anti-collision Techinque for UHF RFID Reader

作　　者：邓敦建[1,2] 阎跃鹏[1,2] 牟荣增[1,2] 

机构地区：[1]中科院微电子研究所昆山分所,江苏苏州215300 [2]中国科学院微电子研究所,北京100029

出　　处：《微电子学与计算机》2014年第1期92-98,共7页Microelectronics & Computer

基　　金：国家科技重大专项(2012ZX03004006)

摘　　要：针对超高频RFID多读写器组网中存在的各种干扰问题,提出了一种多读写器网络规划和协调方法,并对该算法进行了理论分析.通过分析读写器冲突类型和目前的研究算法,采用现有LBT技术和ISO/IEC 18000-6C标准中针对多读写器环境下的防冲突方法,结合读写器发射功率可调方法,达到既保证读写器覆盖范围又解决读写器间干扰问题的目的.最后,在专用集成芯片AS3992和STM32微控制器组成的读写器硬件上进行实验测试.实验结果表明,该算法可在现有读写器硬件平台上应用,并兼容现有的标准,可以被广泛应用在工程上.Aiming at avoiding various interference problems of ultra high frequency （UHF） RFID multi-reader networking,a multiple reader network planning and coordination algorithm is proposed, and the algorithm is analyzed in theory. In this paper, in order to ensure the reader range and solve interference problem between the readers, we analyze the conflict types of readers and existing anticollision algorithms, use existing LBT technology and Multiple reader anti-collision method in the ISO/IEC 18000-6C protocol, and control reader transmit power. Finally, experimental tests were also performed on the reader hardware composed of ASIC AS3992 and micro-control STM32. The experimental results show that the algorithm can be applied in existing reader hardware platform without additional requirements, such as extra hardware and new protocol, therefore, it can be applied in engineering.

关 键 词：超高频RFID~防冲突 多读写器 功率控制 

分 类 号：TN92[电子电信—通信与信息系统]