RFID智能识别产品的设计与制造技术

RFID射频识别是一种非接触式的自动识别技术,它通过射频信号自动识别目标对象并获取相关数据,识别工作无须人工干预,可工作于各种恶劣环境,是物联网的核心技术。物联网智能包装是在互联网的基础上,将包装延伸和扩展到任何物品与任何物品之间,进行信息交换和通信,也就是物物相连,因为该技术涵盖物联网、智能、包装等多个行业和领域,所以就简称为物联网智能包装[1]。RFID智能识别产品的设计与制造技术项目围绕着物联网智能包装领域研发的一项高新科技项目。项目围绕RFID技术、印刷技术、包装技术的融合,解决标签天线制造中的关键技术,解决RFID标签天线设计和封装工艺中的关键技术;解决RFID智能标签产品的溯源与防伪技术;解决RFID智能卡及票据产品制造过程中的生产工艺控制问题。最终实现RFID产品低成本、适应性强、多功能、低碳环保、大规模产业化生产的要求。     

RFID技术可以应用在哪?

RFID名为射频识别,俗称电子标签。RFID射频识别是一种非接触式的自动识别技术,它通过射频信号自动识别目标对象并获取相关数据,识别工作无须人工干预,可工作于各种恶劣环境。RFID技术可识别高速运动物体并可同时识别多个标签,操作快捷方便。RFID技术是20世纪90年代开始兴起的一种非接触式自动识别技术,该技术的商用促进了物联网的发展。它通过射频信号等一些先进手段自动识     

近距离电子防丢报警器系统的设计

射频识别（Radio Frequellcy Identification,RFID）是一种非接触式的自动识别技术,它通过射频信号自动识别目标对象并获取相关数据。RFID的硬件组件包括RFID标签、识读器和天线,用于识别和捕捉RFID标签中的数据;系统中还有主机。用于运行处理数据的应用程序,并连接网络。RFID标签分为被动标签、主动标签和半主动标签,近距离电子防丢报警器是一种类似于主动标签的应用。主动电子标签内装有电池,一般具有较远的阅读距离。     

物联网的发展及对化工新材料产业的影响

论述了物联网的技术发展和应用趋势,以射频识别(RFID)对化工新材料的需求和性能要求为例,分析物联网对化工新材料产业的影响,提出化工新材料产业未来发展的建议。     

RFID无线射频识别技术的应用解析

RFID是radio frequency identification的缩写,即射频识别。是一种利用无线电射频信号实现物体识别的非接触式自动识别技术。射频识别设备是通过射频信号自动识别rfid标签并获取相关数据,识别工作无须人工参与,可工作于各种恶劣环境。rfid标签具有防水、防磁、耐高温、寿命长,体积小、读取距离远、数据可加密存储和批量读取等优点。现在的RFID技术应用非常广泛,目前主要的应用领域包括物流、零售、安全管理、制造业、服装业、电力行业等。     

RFID标签天线的制造方案

RFID技术是一种非接触式的自动识别技术,它是通过阅读器发射射频信号,RFID系统的射频信号将通过空间耦合来实现自动识别目标对象并获取相关数据,同时也可以将新的数据信息写入RFID标签的标志设备的技术,[1]是以电子识别手段赋予商品一种智能化内涵的新技术。随着RFID标签的广泛使用,对RFID标签天线的制造方案提出了更高的要求。目前,RFID标签天线的制造工艺主要有四种工艺。本文主要介绍四种RFID标签天线的四种制造工艺方案,并对每种制造工艺方案进行了分析,为RFID标签天线的制造方案提供了理论依据。     

关于我国RFID编码标准化的思考

射频识别技术（radio frequency identification,RFID）是20世纪90年代开始兴起的一种自动识别技术。与其他自动识别技术相比,射频识别技术具有可非接触识别（识读距离可以从十厘米到几十米）、可识读高速运动物体,抗恶劣环境、保密性强、可同时识别多个识别对象等突出特点,随着RFID技术的不断成熟及标签成本的大幅度下降,这使得射频识别技术目前备受全球关注,因此成为目前发展比较迅速的自动识别技术之一。     

"电子标签"标准正向我们走来

电子标签技术是上世纪九十年代发展起来的物品自动识别技术,由于条形码本身具有的一些缺陷,射频识别技术(RadioFrequency ID简称RFID)"电子标签"由此应运而生。RFID射频识别是一种非接触式的自动识别技术,它通过射频信号自动识别目标对象并获取相关数据,识别工作无须人工干预,做为条形码的无线版本,RFID技术具有条形码所不具备的防水、防磁、耐高温、使用寿命长、读取距离大、标签上数据可以加密、存储数据容量更大、存储信息更改自如等优点。它只需要一块邮票     

台湾RFID技术发展迅速

RFID射频识别是一种非接触式的自动识别技术,他可以通过射频信号自动识别目标对象并获取相关数据,识别工作无须人工干预,可工作于各种恶劣环境.RFID技术可识别高速运动物体并可同时识别多个标签,操作快捷方便.RFID技术应用领域非常广泛,可用在物流和供应管理、生产制造和装配、航空行李处理、邮件/快运包裹处理、文档追踪/图书馆管理、动物身份标识、运动计时、门禁控制/电子门票、道路自动收费等方面,因而受到全世界的推崇.由于RFID技术近来已成为一股热潮,其发展与应用席卷全球.     

务实中演进的射频识别技术

射频识别（RFID）技术是一种非接触的自动识别技术,它通过射频信号自动识别目标对象并获取相关数据,并通过后台网络使得物品跟踪和信息共享可以在更大范围乃至全球范围进行。经过多年的发展,RFID技术在芯片、读写器、天线、标签封装、服务软件等环节的关键技术上都取得了扎实的进展,RFID产品进一步向小型化、实用化、     

Improved Method for Object Recognition in Complex Scenes by Fusioning 3-D Information and RFID Technology

This work analyzes a new method for object recognition in complex scenes combining vision-based techniques applied to the 3-D data obtained using range sensors and object identification coming from radio frequency tags (radio frequency identification (RFID) technology). Three-dimensional vision-based algorithms for object recognition have many restrictions in practical applications, i.e., uncertainty, incapability for real-time tasks, etc., but they work well for pose determination once the object is recognized. On the other hand, RFID technology allows us to detect the presence of specific objects in a scene, but it cannot provide their localization, at least not with the accuracy required in applications such as ours. In this paper, we present a new and powerful recognition method obtained by fusing both techniques. The phases of the method are described, and abundant experimentation results are included. An in-depth performance analysis has been carried out to demonstrate the recognition improvements achieved by the algorithm when RFID assistance is considered. It helps to confirm the robustness of this fusion approach and prove its effectiveness. A final discussion is included, concerning what should be the most adequate size of the object database for optimal algorithm exploitation.     

An RFID-based power meter and outage recording system

Radio frequency identification (RFID) is looked upon as one of the top ten important technologies of the twentieth century. In coming years, public area applications are the key issue in developing RFID. Power systems are innately bulky, large, and definitely, an extremely important application area for RFID. In power areas, RFID has great potential to be applied extensively to customers. Therefore, an RFID-based power meter and outage recording system is proposed in this article. The proposed system can be used to fully collect and record power consumption data and power reliability information on customers. A small-scale power meter and outage recorder is designed first and then an RFID system is designed and embedded into the power meter and employed to record the power data in tags. A handheld meter management system is also designed in this article to collect the data stored in the tags and synchronize the collected data with rear-end processing if necessary. Due to the uniqueness of RFID tags, the power consumption data and outage information on customers can be recorded and then identified in a rear-end processing system. Experimental results show the validity of the proposed system.     

Evaluation of an innovative system for improving readability of passive UHF RFID tags attached to reusable plastic containers

Radio frequency identification (RFID) is a contactless identification technology that has proven to work well in conjunction with reusable plastic containers (RPCs). The impact of this technology on returnable containers has been explored by several past studies. This study evaluates an innovative system for improving readability of passive UHF RFID tags in conjunction with RPCs. The system involves an energy transfer device (ETD), which when attached to the RPCs, passively transfers radio frequency signals to interior regions of a unitized load thereby improving the readability of all RFID tags attached to the RPCs. This study included an evaluation of the improvement in readability of tagged RPCs in a unitized load with forklift truck speed, product type and pallet pattern as the variables and with readability as the main control variable. It was observed that ETDs vastly improve the readability rates by nearly 97%. Results are also included in this paper describing the effects of the product type, pallet patterns and forklift truck speeds on the readability of tagged RPCs in a unitized load. Copyright © 2011 John Wiley & Sons, Ltd.     

射频识别在可视化后勤系统中的应用

射频识别技术是一种新型自动识别技术，具有可靠性高、保密性强，方便快捷、非接触等特点。将射频识别技术应用于后勤可视化系统，可以实时获取保障对象的需求及物资供应的类型、数量和流向等信息，从而实现全时段、全方位、全过程的供应保障。介绍了射频识别系统结构及工作原理，同时研究了射频识别技术在后勤可视化系统中的应用，所提出的在运物资可视化系统是根据贴在集装箱和装备上的射频识别标签实现的。     

判断二进制树中标签识别完毕的方法

分析了射频识别(RFID)系统阅读器与标签通信的二进制树算法,指出在标签识别过程中,阅读器并不知道是否识别完标签,阅读器会以连续多次没有接收标签响应为依据结束对标签的查询,这样往往会造成标签漏读或浪费时间在已识别完的标签上。基于此分析,提出了判断二进制树中标签识别完毕的方法。该方法通过在阅读器中设置计数器,就可以很好地跟踪标签的识别情况,准确地判断出标签是否识别完毕。分析结果表明,该方法可以准确地判断标签是否识别完毕,增加系统识别效率和可靠性。     

A Novel Time-aware Frame Adjustment Strategy for RFID Anti-collision

Recently, object identification with radio frequency identification (RFID) technology is becoming increasingly popular. Identification time is a key performance metric to evaluate the RFID system. The present paper analyzes the deficiencies of the state-of-the-arts algorithms and proposes a novel sub-frame-based algorithm with adaptive frame breaking policy to lower the tag identification time for EPC global C1 Gen2 UHF RFID standard. Through the observation of slot statistics in a sub-frame, the reader estimates the tag quantity and efficiently calculates an optimal frame size to fit the unread tags. Only when the expected average identification time in the calculated frame size is less than that in the previous frame size, the reader starts the new frame. Moreover, the estimation of the proposed algorithm is implemented by the look-up tables, which allows dramatically reduction in the computational complexity. Simulation results show noticeable throughput and time efficiency improvements of the proposed solution over the existing approaches.     

基于二进制树的RFID系统自适应多分支防碰撞算法

为提高射频识别(RFID)系统的识别效率,研究了系统的标签防碰撞问题。考虑到对标签进行多分支处理能够有效地提高RFID系统标签识别效率,而传统的多分支防碰撞算法都是在标签估计的基础上对标签进行最优分组,标签估计产生的时延和误差都会影响整体的识别效率,提出了一种基于二进制树的自适应多分支(AMB)防碰撞算法。该算法根据二进制树结构特点,利用识别的标签数目对树结构中右节点标签进行估计并进行分组识别,经过多次调整的自适应多分支防碰撞算法,可以规避一次标签估计所引入的估计误差,从而提高系统的识别效率。仿真结果表明自适应多分支算法可以大大提高标签识别效率,在标签数量较大时系统效率可达43%左右。同时该算法实现简单,只需在阅读器中增加若干计数器,不需要改变任何空中接口,很容易与现有协议兼容。     

Tag identification enhancement by using a distributed antenna structure for radio frequency identification systems

This study presents a distributed antenna structure operating at a frequency of 915 MHz to increase the tag identification sensitivity for passive radio frequency identification (RFID) systems. The distributed antennas are connected to a reader with a four-port power splitter/combiner which consists of Wilkinson power splitters (WPSs), band pass filters (BPFs) and power amplifiers (PAs). Due to the polarisation of the electromagnetic field, the antennas are positioned on opposite sides in both vertical and horizontal directions of the object. This positioning improves the performance of the system, and increases the sensitivity when identifying unclearly positioned tags. An experimental RFID system is also set up to demonstrate the proposed structure. Simulation and experimental results indicate that using four distributed patch antennae can improve tag identification in passive RFID systems.     

柔性电子器件集成与其在包装上的应用

目的 分析柔性电子和柔性基底的发展现状、趋势和前景,为促进智能包装的进一步发展提供参考.方法 先从柔性基底材料入手,梳理常见基底材料性能;再综述柔性电子器件集成的研究现状及主要的集成技术,并讨论其在包装上的应用.结论 具有较好柔韧性和降解性的纸基可作为柔性电子集成的基底材料,结合柔性印刷电子技术和传统硅基电子技术的优势,将柔性电子器件通过蛇形互联结构集成并封装在柔性基底上,从而制备集成可拉伸的微系统,且随着新型印刷电子材料、印刷工艺、新技术和新设备的不断涌现,柔性电子器件集成于柔性基底上并应用于包装将成为一大研究热点.     

RFID research and testing for packages of apparel,consumer goods and fresh produce in the retail distribution environment

Radio frequency identification (RFID) is a term used for any device that can be sensed at a distance by radio frequencies with few problems of obstruction. The origins of the term lie in the invention of tags that reflect or retransmit a radio‐frequency signal. According to a recent article by Forrester Research, the minimal ‘Slap and Ship’ approach to RFID compliance will cost an individual company between $2 million and $20 million. Because retailers like Wal‐Mart plan to share with their suppliers all the RFID‐generated data points (from when a case/pallet enters their distribution centre until it leaves their stockroom), suppliers will eventually be able to use this data as a powerful forecasting tool. RFID is an enabling technology that can potentially facilitate a real‐time, end‐to‐end supply chain visibility system. Suppliers who integrate full‐scale RFID systems will realize efficiencies in time, material movement, inventory planning, shipping and warehousing both internally and externally. This paper provides a brief overview of the RFID technology, mandates by retailers and federal agencies, advances towards global standardization and typical consumer level RFID applications, and discusses RFID initiatives taken by some of the global leaders in apparel, consumer goods and fresh produce industries. Copyright © 2007 John Wiley & Sons, Ltd.