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关键词： RFID   电子标签   工业互联网   空调器抽真空过程监测系统  

摘要： 本文介绍物联网技术在空调器抽真空过程检测系统中的研究及应用,通过物联网技术中的标签传感器及工业互联网技术实现空调器压缩机、抽真空测试装置、机械工作台车的互联互通,并实现对空调器压缩机真空过程数据的实时采集及监控,从而提高空调器抽真空过程监测系统数据的准确性、可靠性和及时性。

关键词： 小波消噪   决策理论   RFID   调制识别  

摘要： 低信噪比下调制方式识别在多标准RFID通信互联中起着重要的作用。本文采用小波消噪和决策理论相结合的方法,实现低信噪比下RFID调制方式识别。仿真结果表明,该方法在信噪比低于5dB时,识别正确率达到99%以上。

关键词： RFID技术   图书馆   图书流通   改进措施  

摘要： RFID技术在图书馆领域已得到广泛的应用。以河南工学院图书馆为例,讨论了RFID技术在图书馆中的发展,从高识别率、自动借还、自动化图书定位与盘点、图书自动分拣及安全预警等方面对RFID技术的特点进行介绍,并与传统技术进行对比探讨了RFID技术的优越性,提高了图书管理的工作效率及读者满意度。从难识别图书污损及易出现错架、乱架现象探讨了采用RFID技术存在的不足,并分别从图书管理员及读者方面提出了改善措施。

关键词： 嵌入式RFID标签   农用机械   信息化管理  

摘要： 随着农场机械化程度的不断提高,农业机械的有效管理成为提高农场工作效率的重要条件,而小型农用机械因为类型多、数量多、体积大小不一等特点而难以进行统一管理。为此本文设计了一种嵌入无源RFID标签的小型农用机械身份牌,身份牌采用金属材质,可以焊接或者连接在小型农用机械上,提供身份标识,以此为基础,引入了信息化的手段,设计了一种小型农机信息化管理流程,采用全自动的方式实现农机的借用与归还,以提高农机管理效率,达到效益最大化。

关键词： RFID技术   EPC项目   材料管理   方案设计  

摘要： 在EPC工程总承包项目中,材料成本占据了较大比重,创新材料管理方法是提高工程公司的利润率与核心竞争力的重要手段之一。RFID无线射频技术,在货物追踪、自动识别、数据交换上应用前景广阔。本文尝试将RFID技术应用到EPC工程项目的材料管理工作中,利用技术手段解决管理问题,提升EPC项目材料管理的信息流转效率与材料管理水平。

关键词： 软硬件   协同设计   高层次   协议通信   自顶向下  

摘要： 为了满足对于集成电路的复杂设计需求,继承了C++扩展库的SystemC的开发与设计应运而生。SytemC可以满足对于软硬件协同设计的要求,在设计的过程中,可以进行快速仿真和验证。针对于通信协议(ISO/IEC 18000-6C)进行较高层次的建模设计,采用函数调用的方式实现询问机和标签之间的协议通信。针对于UHF RFID(Ultra High Frequency Radio Frequency Identification)通信协议,从系统级设计到行为级设计,实现该协议的自顶向下的设计,完成了标签识别层和基带通信链路层的设计。最后采用Vivado HLS综合软件将SystemC源代码转化成Verilog等硬件描述语言,软件描述的系统级综合成RTL级代码。针对标签基带链路ENCODE_T模块,在Microsoft Visual C++6.0中对数据“1001001001011001”进行fm0\miller编码仿真之后,在Modelsim中完成了波形验证,并通过Vivado HLS综合软件将其转化为RTL级电路。

关键词： RFID   工业4.0   数据交换  

摘要： 射频识别技术(RFID)是自动识别技术的一种,通过无线射频方式进行非接触双向数据通信,利用无线射频方式对记录媒体(电子标签或射频卡)进行读写,从而达到识别目标和数据交换的目的。该技术是工业4.0的核心要素之一,本文主要研究西门子RF200读写器的应用。

关键词： RFID   Internet of things   Cryptography   Healthcare   Authentication  

摘要： Radio Frequency Identification (RFID) is an emerging technology that is used for the unique identification of objects. RFID can be used in different application domains, including Health-care systems, where the safety of patient-sensitive data is a primary concern. Since the RFID technology is used in various medicine sectors, particularly real-time patient monitoring, patient medicine Information, medical emergency, and drug administration system, the use of RFID raises severe security and privacy concerns. In order to cope with these security issues, we propose an Elliptic curve based authentication protocol for RFID. The proposed model uses an implicit certificate concept to secure health-care data. We prove this claim for secure communication using the formal security analysis, i.e., BAN logic, security analysis based on the mathematical model, i.e., ROR model, formal verification using AVISPA tool, and informal security analysis. We review some of the RFID authentication schemes based on ECC in terms of performance and security. Our analysis indicates that the proposed protocol provides mobility, scalability, security, and privacy in the health care environment.

关键词： RFID   sensors   RFID sensors   RFID antennas   RFID readers   chipless RFID   wireless sensors   wireless sensors networks   internet of things   metamaterials   metasurfaces   printed electronics  

摘要： A review of technological solutions for RFID sensing and their current or envisioned applications is presented. The fundamentals of the wireless sensing technology are summarized in the first part of the work, and the benefits of adopting RFID sensors for replacing standard sensor-equipped Wi-Fi nodes are discussed. Emphasis is put on the absence of batteries and the lower cost of RFID sensors with respect to other sensor solutions available on the market. RFID sensors are critically compared by separating them into chipped and chipless configurations. Both categories are further analyzed with reference to their working mechanism (electronic, electromagnetic, and acoustic). RFID sensing through chip-equipped tags is now a mature technological solution, which is continuously increasing its presence on the market and in several applicative scenarios. On the other hand, chipless RFID sensing represents a relatively new concept, which could become a disruptive solution in the market, but further research in this field is necessary for customizing its employment in specific scenarios. The benefits and limitations of several tag configurations are shown and discussed. A summary of the most suitable applicative scenarios for RFID sensors are finally illustrated. Finally, a look at some sensing solutions available on the market are described and compared.

关键词： operating frequency   bandwidth 900.0 MHz   inter-digital capacitive unit-cell   wavelength 7.6 m   single layer   multilayer antennas   Waveguide and microwave transmission line components   meander-line antennas   UHF resonators   parasitic inductance   radiofrequency identification   unit-cell ZOR resonant frequency   capacitors   zeroth order resonance   UHF antennas   design process   lossy coplanar conductors   design compact UHF radio-frequency identification tags   antenna miniaturization   prototype antenna   metamaterial antennas   compact antenna topology   Single antennas   antenna efficiency   design antennas   RFID systems   ZOR frequency   zeroth order resonant design techniques   passive UHF RFID tags   meander-line segment  

摘要： Meander-line and multi-layer antennas have been used extensively to design compact UHF radio-frequency identification (RFID) tags;however the overall size reduction of meander-line antennas is limited by the amount of parasitic inductance that can be introduced by each meander-line segment and multi-layer antennas can be too costly. In this paper, a new compact antenna topology for passive UHF RFID tags based on zeroth order resonant (ZOR) design techniques is presented. The antenna consists of lossy coplanar conductors and inter-connected inter-digital capacitor (IDC) unit-cells with a ZOR frequency near the operating frequency, which is a key component in the design process because the unit-cells chosen for the design are inductive at the operating frequency. This makes the unit-cells very useful for antenna miniaturization. The new design in this work has several benefits;namely the coplanar layout can be printed on a single layer, matching inductive loops that reduce antenna efficiency are not required and ZOR analysis can be used for the design. Finally, for validation, a prototype antenna was designed with a unit-cell ZOR resonant frequency of 900 MHz, fabricated and characterized. A maximum read-range of 7.6 m was determined.