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关键词： RFID tags   Standards   Broadband antennas   UHF antennas   Systematics   Engines   Regulation   Allocated frequencies   broadband   dual-band   Internet of Things (IoT)   metal-mountable ultrahigh frequency (UHF) tag antenna   radio-frequency identification (RFID)   RFID tag standards  

摘要： The employment of broadband/dual-band ultrahigh frequency (UHF) radio-frequency identification (RFID) tag antennas contributes to the growth of RFID technology, with many potential implications, such as the increase of international trade, and reducing costs thereof. This study presents all reported articles on RFID tags for metal objects that can work seamlessly across different countries. Moreover, it addresses all available approaches to design of wideband/dual-band metal-mountable tag antennas and showcases the techniques used to expand the tag bandwidth. The relevant works were gathered by applying a designated query '("tag antenna*" OR "RFID tag*") AND (metal*) AND ("broadband" OR "wideband" OR "dual band" OR "tri band")' in three scientific research engines (Web of Science, IEEE Xplore, and Scopus). The final set is determined on the basis of the exclusion and inclusion criteria, revealing 38 articles. The selected papers were categorized into five groups based on the tag structure, and all techniques utilized to widen the bandwidth of each specific structure. This taxonomy attempts to provide a deeper insight into the considered topic through a comprehensive presentation. The bandwidth measurement criterion, which is 3-dB return loss (RL) bandwidth is selected due to showing an adequate reading distance on the edge of the bandwidth. In addition, the criterion clarifies the operation frequencies that facilitate the worldwide operation of the RFID technology. This article fosters adaptation of suitable regulations to support the use of RFID systems, and researchers to design proper metal-mountable tags, which must be assessed based on operating frequencies, performance, size, cost, and compatibility with the targeted applications.

关键词： Internet of things  

摘要： This work presents an ultra-high frequency (UHF) radio frequency identification (RFID) tag embroidered on a face mask for Internet of Things (IoT) devices to operate within the RFID band. The systematic design approach of characteristic mode analysis (CMA) has been employed to create the tag. The proposed tag is embroidered on a cotton fabric facemask with a dielectric constant of 1.143 using conductive thread with a resistance of 28ohms/ft. A simulation is performed using Computer Simulation Technology (CST) Microwave Studio to simulate a unique Mickey Mouse (MM) shape tag to capture resonating modes. Additionally, the optimal conjugate match with a passive RFID chip (Alien Higgs H3) has been achieved, which exhibits an impedance of 27-200j at the desired frequency. A simulation of the voxel head model has also been carried out to verify the specific absorption rate (SAR) i.e. © 2023, The Authors. All rights reserved.

关键词： Internet of things  

摘要： The use of Radio Frequency Identification (RFID) technology is ubiquitous in a number of businesses and sectors, including retail sales, smart cities, agriculture, and transportation. Additionally, educational institutions have started using RFID to track student attendance, combining this technology with Google Sheets and the Internet of Things (IoT) to build a real-time attendance tracking system. For a thorough examination of the creation of a student attendance system, this paper includes a systematic literature evaluation of 21 major research published on IoT based attendance systems employing RFID. This RFID-based attendance system enables automation, eliminating several problems connected with the manual process, such as time wasting, proxies, and the possibility of losing the attendance sheet, in contrast to the traditional attendance system, which depends on manual signatures. By creating a system that automatically registers students' attendance by merely flashing their student cards at the RFID reader, all the aforementioned difficulties may be successfully addressed. This automated method guarantees attendance monitoring accuracy and dependability while also saving time. This paper's conclusion highlights the significant advantages of implementing an IoT-based attendance system based on RFID technology. The suggested solution provides a trustworthy, efficient, and secure alternative to manual attendance techniques, successfully addressing their shortcomings. This paper offers helpful insights for institutions looking to create a cutting-edge attendance system that increases student involvement and academic achievement by looking at guiding principles, best practices, and the successful resolution of difficulties. © 2023, CC BY.

关键词： 物联网   仓储管理   RFID   系统设计  

摘要： 基于物联网的智能仓储管理系统是一种新型管理方式,通过射频识别(radio frequency identification,RFID)技术实现对物资的自动识别和追溯,提高了物资管理的准确性和效率。为此,提出了一种新的基于物联网的智能仓储管理系统设计方案,并讨论了其优缺点和潜在应用。分析表明,该系统简洁高效,可以提高仓库管理效率和准确性,降低管理成本,增强物资管理的灵活性和安全性。由于RFID技术成本较高,数据安全和隐私保护仍然是需要解决的问题。未来研究可以从降低成本、数据安全和实施方案等方面深入探讨该系统的应用和发展。

关键词： 射频识别(RFID)   行李托运   全流程跟踪   迟运率  

摘要： 随着射频识别(Radio Frequency Identification,RFID)技术的发展,将RFID技术与行李运输相结合,可以实现旅客行李从托运到提取的全流程跟踪,对行李托运的服务质量起到巨大的推动作用。基于RFID全流程跟踪技术在机场行李系统中的应用,通过数据分析优化管理措施,实现行李系统运行品质的改进与提升。

关键词： RFID技术   电子标签   设备管理  

摘要： RFID是一项无线通信方法,能够对指定的信息实施非接触式的主动辨识。本文根据电视台设备管理问题的切实需求,结合设备的工作环境,阐述了RFID技术的理论基础和基本原理,描述了基于RFID技术构建设备管理系统的基本构成。并探讨了应用于设备管理中的优势和可行性。

关键词： 跨座式单轨   手动驾驶辅助系统   防冲岔   RFID技术  

摘要： 具备全自动驾驶功能的跨座式单轨被越来越多的城市所采用,针对跨座式单轨列车在切除ATP的全手动驾驶模式下经过特定区段时存在超速、冲出道岔、冲撞线路端部的安全隐患,文章根据跨座式单轨的特点,提出了一种基于RFID技术的手动驾驶辅助系统解决上述隐患,阐述了该系统的组成、工作原理、工程应用方案,在芜湖市轨道交通1号线、2号线一期工程通过了各项测试验证并正式投入运营,积累了经验,为该系统在其他项目推广应用打下基础。

关键词： 射频识别   中小型区域   单阅读器移动RFID系统   防碰撞算法   长短期记忆网络   分组预测   仿真实验   标签丢失率  

摘要： 单阅读器移动射频识别(RFID)系统是一种中小型区域RFID的标签识别系统,传统的标签防碰撞算法在单阅读器移动RFID系统中面临标签丢失、标签碰撞等问题。为改善上述问题,提出一种结合LSTM网络和GBSA(分组比特时隙ALOHA)算法的GBSA改进算法。GBSA算法使用分组策略使答应的标签数在最佳性能区间内,在单阅读器移动RFID系统中GBSA算法存在无法准确计算下一帧分组数的问题,导致阅读器花费大量时间与标签通信反复确认分组数,使识别效率下降,结合LSTM的GBSA改进算法使用LSTM网络解决该问题。LSTM网络使用阅读器识别标签的历史数据预测下一帧中GBSA算法的最佳分组数,通过对分组数的准确预测,提高标签识别率。仿真实验结果表明,结合LSTM的GBSA改进算法可以有效地减少标签丢失,提高识别效率。

关键词： RFID技术   5G通信   电商物流   标签   数据库  

摘要： 传统方法在电商物流实时追踪中应用效果不佳,不仅物流失踪率较高,而且追踪响应时间比较长。针对这一问题,提出基于RFID技术和5G通信的电商物流实时追踪方法。首先,根据电商物流实际情况生成电商物流RFID标签,利用RFID读写器对电商物流RFID标签射频扫描,获取电商物流实时信息。然后,通过设定的5G通信数据协议帧以及数据包格式,实现电商物流信息的实时传输。最后,采用数据库技术对电商物流信息分类、检索,从而实现电商物流实时追踪。实验表明:该方法的物流失踪率在1%以内,跟踪响应时间比较短,说明该方法在电商物流实时追踪方面具有良好的应用前景。

关键词： RFID技术   箱式操作台   批量数据采集   准确性  

摘要： 随着现在智能仓储的快速发展,货物出入库数量庞大,要求出入库的实效越来越高。本文先介绍RFID的技术发展和原理;接着介绍当前用于仓库货物盘点的技术和存在的痛点;最后根据现有技术的痛点,提出基于RFID快速批量读取的特点、结合电磁屏蔽技术设计了一款RFID箱式操作台。该箱式操作台对RFID标签最大读取速度可达到400个/5S、盘点准确性可以达到99%以上、可以达到50 cm的屏蔽距离;解决了货物在出入库过程货物盘点速度慢,容易漏盘窜读的问题;有效的提高货物快速及准确出入库的效率。