【摘要】 RFID技术是物联网网络运行的基础,RFID识别效率的高低直接决定着物联网系统整体运行速度的快慢。因此,在物联网背景下RFID技术的发展好坏至关重要,虽然RFID发展至今已有几十个年头,但是,RFID技术仍然存在着严重的缺陷,主要问题在于识别过程中的标签碰撞现象。常见的处理办法是通过改良算法降低碰撞概率,但整体效果不明显。文中以传统二进制防碰撞算法为基础,对现有的二进制算法进行优劣比较。并结合现有算法优缺点提出了新的改进式二进制算法,新算法既结合了动态二进制算法的前后缀应答模式又加入了新的碰撞位判定规则。最后,通过模拟仿真实验与过去算法进行了对比,证明了新改进算法的优越性,具有实际推广意义。更多还原

【Abstract】 RFID is the basis operation of the Internet of Things. The speed of the Internet of Things is directly determined by the efficiency of RFID identification. Therefore,the development of RFID is very important in the context of Internet of Things. Although RFID has been developed for decades,there are still serious defects in RFID technology.The main problem is the label collision phenomenon in the identification process. A common approach to reduce the probability of collision is updating the improved algorithm,but the result is not obvious. Based on the traditional binary anti-collision algorithm,in this paper,the existing binary algorithms is compared. A new improved binary algorithm is proposed through combining with the advantages and disadvantages of existing algorithms. The response mode of dynamic binary algorithm is combined in the new algorithm and a new collision bit judgment rule is added. Finally,the simulation experiment is compared with the past algorithm;the new improved algorithm is proved which has the unique superiority and practical significance.更多还原