大规模RFID系统标签的自适应高效准确识别策略研究

项目名称： 大规模RFID系统标签的自适应高效准确识别策略研究

项目编号： No.61472268

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 自动化技术、计算机技术

项目作者： 顾才东

作者单位： 苏州市职业大学

项目金额： 81万元

中文摘要： 射频标签识别技术（RFID）被广泛应用于物流和仓库管理, 在射频识别通信中，阅读器（reader）发出识别命令，当某个时隙内有多个标签（tag）同时回复，它们的信号会发生冲突，导致识别失败；阅读器位置的移动或随机放置，相邻两次扫描可能覆盖一些相同的标签（overlap），造成冗余识别（redundancy），降低了扫描的效率。在大规模的物流和仓库管理中，标签数量通常巨大且分散，如何快速而有效地对所有标签进行识别是一个非常重要的问题。设计一个标签选择（selection）协议，策略一是使得已经扫描的标签ID不再重复扫描，以缩短扫描时间；策略二是将所有扫描的标签ID上传到服务器后，由服务器进行冗余标签ID的消除。本项目研究RFID标签自适应高效扫描的最优策略及其与标签分布的量化关系，设计最优的标签扫描协议。本研究将产生系列自主创新成果，对大规模的射频识别系统协议设计和应用带来指导意义。

中文关键词： 物联网；RFID技术；传感器网络

英文摘要： Radio Frequency Identification (RFID) technology plays an important role in supply chain logistics and inventory control.In RFID systems ,tag scanning is which aims to collect tag IDs to identify the associated objects.The RFID reader continuous scanning scenario at different locations are often needed to cover the entire inventory (tags), the overlapping tags are read multiple times. Most existing methods suffer from low scanning efficiency , since they do not distinguish the size of overlap which is an important factor of scanning performance. To obtain a protocol of selection tags.First strategy is which do not scans overlap tags,in order save time. Second strategy upload all tag IDs to the server,then the server deleted redundancy tag IDs. We propose an Adaptive COntinuous Scanning scheme (ACOS). We analytically unveil the fundamental relationship between the performance of continuous scanning and the size of overlap, deriving a critical threshold for the selection of scanning strategy.Further, we design an accurate estimator to approximate the overlap. Combining the estimate and a compact data structure, an adaptive scanning scheme is introduced to achieve low communication cost. Through detailed analysis and extensive simulations, we demonstrate that the proposed scheme significantly outperforms previous approach in total scanning time. In this study,most innovations achievement can be obtained.It is important to design and apply that Towards Adaptive Continuous Scanning in Large-Scale RFID Systems.

英文关键词： Internet of things;RFID;Sensor