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关键词： 探究实践   全球定位系统   激光扫描器   学生核心素养   射频识别技术   实践与研究   红外感应器   物联网  

摘要： 物联网依托互联网技术,通过各种信息传感器、射频识别技术、全球定位系统、红外感应器、激光扫描器等装置与技术,实时采集需要的声、光、热、电、力学、化学、生物、位置等各种信息,通过各类网络接入,实现物与物、物与人的泛在连接,实现对物品和过程的智能化感知、识别和管理。探究实践是学生学习科学的重要方式,但是由于时间和空间的限制,很多探究实践活动效率低下,实验数据的获得和汇总较麻烦,有些时候还可能流于形式。“物联网”技术的融入,可以突破时空限制,在学生面前展示一个真实的科学探究世界,提高探究实践的效率,促进学生核心素养的提升。

关键词： “十四五”时期   高质量发展   RFID技术   创新服务   智能服务  

摘要： 文章介绍了智能环境下图书馆管理的特点,指出了智能环境下图书馆服务创新发展的方式,旨在为图书馆提升服务水平提供有价值的参考。

关键词： 风力发电   泛在电力物联网   RFID   GIS   场级无线   移动运检  

摘要： 随着科技水平的不断提高,物联网技术在我国取得了长足的进步。在新一代信息技术的基础上,建立了分层、动态均衡的运检信息分析、协同和控制网络,建立了运检全业务的知识图谱,极大地提高了运检的实时分析和优化能力,并从整体上改善了控制的效率和质量。通过对移动运检平台的设计原理的分析,从系统的架构、安全和开发等方面,结合企业的实际情况,详细介绍了该平台的功能。根据工程实践,对其经济效益、社会效益进行了分析,并对其今后的发展趋势进行了预测。

关键词： 射频识别   帧Aloha接入方案   FM0标签   记忆特性   碰撞检测   误码率   延迟  

摘要： 为实现两个射频识别(RFID)碰撞标签信息的检测和分离,提出一种利用Gen2标准中FM0标签编码固有记忆特性的检测方法。通过对FM0比特编码特点和碰撞标签信息的无记忆检测分析,得到基于单个比特持续时间的无记忆检测方法的条件错误概率和单个标签信息检测的误码率;然后利用单个FM0比特编码需要前一比特的“记忆”特性,得到对应于前一比特的一对测量值和对应于下一比特的一对测量值,进而得到碰撞标签信息的1比特记忆辅助检测时的条件错误概率和误码率性能;并对在帧Aloha媒质接入方案中采用提出的检测方法时的N个标签群的总延迟减少性能进行了分析。仿真实验结果表明,提出的1比特记忆辅助检测方法,相比于无记忆检测具有更好的误码率性能,且能减少标签群接入时的总延迟。

关键词： Internet of things   Personal protective equipment   Operator 4   0   PPE compliance   Framework   RFID  

摘要： Existing H&S monitoring methods are manual, cumbersome, time consuming and issues with safety compliance and use of PPE remain a concern. With the existing manual H&S processes, there are significant delays and, in some cases, even failure to report incidences, resulting in no or slow improvements to safety. This paper proposes a prototype PPE access monitoring system which combines smart PPE and an indoor/outdoor personnel location monitoring system. The paper also proposes a generic framework to be used for smart gateway services within a manufacturing site to augment and enable smart PPE, separating areas of high and low risk. The prototype automated PPE detection gate presents a practical use of the framework and demon-strates a suitable method for assessing workforce/visitor PPE compliance. Its secondary function is to act as a location waypoint system to support other location tracking methods, identified in the literature and throughout the testing protocol. The system could be further adapted to support augmented personnel within the Operator 4.0 paradigm to improve site safety, monitoring and control.

关键词： traceability   barcode   RFID   AIDC technologies   Kaizen   Industry 4   0   business technology development  

摘要： Technological advances have shown an accentuated growth trend, which is directly proportional to the quality of life in today's society. As a result, the business market is becoming increasingly competitive and customers are becoming more demanding, forcing companies to look for new tools and adopt new work methodologies to improve their flexibility, effectiveness and efficiency, ensuring a better response to market needs. In this context, the tools for tracking objects, totally or partially automatic, are considered essential technologies to all kinds of analysis and the treatment of business data, providing several benefits to companies, including waste reduction, identification of bottlenecks, cost reduction, improvement of product quality and the entire flow of business information. A case study of an industrial company specializing in machining, polishing and galvanoplasty of metallic alloys, small size pieces to be incorporated in luxury fashion accessories, is presented. Derived from the difficulties underlying the implementation of a traceability system supported by identification technologies and obtaining data in an automatic way, the focus of the study is based on the identification of a base model, with sequential steps, which allows any industrial company to adapt these types of technological tools and systems. Based on the pillars of knowledge acquired through a bibliographic review on the subject, as well as on the recognition of the whole production flow, this work makes use of an implementation model already developed, studied and tested, supported by a project viability analysis measuring the benefits obtained with the results found after the respective implementation. Production performance increased with the implementation of a traceability system, as the time worked throughout the flow decreased. Production performance prior to implementation was around 98.6%. Applying a Kaizen (continuous improvement) strategy and based on the times collected i

关键词： Ceramic resonators   dielectric resonant antennas (DRAs)   on-metal RFID tags  

摘要： Radio frequency identification (RFID) is a widely used wireless technology for contactless data exchange between a passive information carrier (tag) and an active interrogation device (reader). Being sensitive to a surrounding environment, RFID tags are usually designed per application. Here, we demonstrate an RFID tag with three essential functions available simultaneously, namely, small footprint, long reading range, and capability of on-metal labeling. Our design is based on a compact high-index ceramic resonator and an inductively coupled small metal ring functionalized with an RFID chip. The tag operates at magnetic dipolar resonance, which interacts with the metal object subject to labeling. Specifically, a 16.5 mm x 16.5 mm x 12 mm footprint device, placed on a 40 cm x 40 cm metal sheet, was successfully interrogated from 22 m with no violation of international effective isotropic radiated power (EIRP) standards. Currently, it is the smallest on-metal RFID tag with a reading range of over 20 m. Multifunctional miniature long-range ceramic tags are attractive for use in numerous practical applications, including the Internet of Small Things (IoST) and many others.

关键词： Decision Support System   Industry 4.0   Information Management   RFID technology   Supply Chain Performance  

摘要： Supply Chain processes are continuously marred by myriad factors including varying demands, changing routes, major disruptions, and compliance issues. Therefore, supply chains require monitoring and ongoing optimization. Data science uses real-time data to provide analytical insights, leading to automation and improved decision making. RFID is an ideal technology to source big data, particularly in supply chains, because RFID tags are consumed across supply chain process, which includes scanning raw materials, completing products, transporting goods, and storing products, with accuracy and speed. This study carries out a systematic literature review of research articles published during the timeline (2000-2021) that discuss the role of RFID technology in developing decision support systems that optimize supply chains in light of Industry 4.0. Furthermore, the study offers recommendations on operational efficiency of supply chains while reducing the costs of implementing the RFID technology. The core contribution of this paper is its analysis and evaluation of various RFID implementation methods in supply chains with the aim of saving time effectively and achieving cost efficiencies. © 2022

关键词： Antenna   radio frequency identification (RFID) tag   textile technology  

摘要： In this work, a UHF broadband surface-independent textile fully woven radio frequency identification (RFID) tag is presented. The antenna is composed of two stacked multilayer fabric pieces in which the shaped conductive and dielectric surfaces are part of the woven structure. In addition, a novel technique for the integration of the RFID chip in the woven structure was developed, providing a maximum integration level and making possible the manufacturing of the tag in a single step using conventional machinery from the textile industry. A tag prototype was experimentally characterized, showing a 12.5 m read range under a +/- 60 x +/- 60 degrees angular range, when using a circularly polarized interrogator device with 35.2 dBm effective isotropic radiated power (EIRP).

关键词： RFID identification   MAC protocols   noise resiliency   sparse recovery  

摘要： Fast and reliable identification of Radio Frequency Indentification (RFID) tags by means of anticollision (MAC) protocols has been a problem of substantial interest for more than a decade. However, improvements in identification rate have been slow, as most solutions rely on sequential approaches that try to avoid collisions, which have limited margin for performance improvement. Recently, there has been growing interest in concurrent techniques that exploit the structure of collisions to recover tag IDs. While these techniques promise substantial improvements in speed, a key question that remains unaddressed is how to deal with noise or interference that might introduce errors in the recovery process at the reader. Our goal in this paper is to consider a noisy wireless channel and add robustness to concurrent RFID identification techniques. We propose a new protocol, called CIRF (Concurrent Identification of RFids), which uses multiple antennas to add robustness to noise and leverages block sparsity-based optimization to recover EPC IDs of transmitting tags. We include fail-safe methods to handle errors that persist after the optimization stage. Extensive simulations show that CIRF achieves substantial resilience improvement in a range of very low to medium Signal-to-Noise (SNR) situations, being able to always correctly recover 99% of tags.