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关键词： disabilities   applications in healthcare   medical sensors   security in wearable devices, RFID assistive technology   RFID sensor tags   cryptography   field montgomery multiplier   cryptosystems   IoT security   ubiquitous computing  

摘要： Radio Frequency Identification (RFID) assistive systems, which integrate RFID devices with IoT technologies, are vital for enhancing the independence, mobility, and safety of individuals with disabilities. These systems enable applications such as RFID navigation for blind users and RFID-enabled canes that provide real-time location data. Central to these systems are resource-constrained RFID devices that rely on RFID tags to collect and transmit data, but their limited computational capabilities make them vulnerable to cyberattacks, jeopardizing user safety and privacy. Implementing the Elliptic Curve Cryptography (ECC) algorithm is essential to mitigate these risks;however, its high computational complexity exceeds the capabilities of these devices. The fundamental operation of ECC is finite field multiplication, which is crucial for securing data. Optimizing this operation allows ECC computations to be executed without overloading the devices' limited resources. Traditional multiplication designs are often unsuitable for such devices due to their excessive area and energy requirements. Therefore, this work tackles these challenges by proposing an efficient and compact field multiplier design optimized for the Montgomery multiplication algorithm, a widely used method in cryptographic applications. The proposed design significantly reduces both space and energy consumption while maintaining computational performance, making it well-suited for resource-constrained environments. ASIC synthesis results demonstrate substantial improvements in key metrics, including area, power consumption, Power-Delay Product (PDP), and Area-Delay Product (ADP), highlighting the multiplier's efficiency and practicality. This innovation enables the implementation of ECC on RFID assistive devices, enhancing their security and reliability, thereby allowing individuals with disabilities to engage with assistive technologies more safely and confidently.

关键词： Frequency division multiple access  

摘要： Parallelizing passive Radio Frequency Identification (RFID) reading is an arguably crucial, yet unsolved challenge in modern IoT applications. Existing approaches remain limited to time-division operations and fail to read multiple tags simultaneously. In this paper, we introduce QuinID, the first frequency-division multiple access (FDMA) RFID system to achieve fully parallel reading. We innovatively exploit the frequency selectivity of the tag antenna rather than a conventional digital FDMA, bypassing the power and circuitry constraint of RFID tags. Specifically, we delicately design the frequency-selective antenna based on surface acoustic wave (SAW) components to achieve extreme narrow-band response, so that QuinID tags (i.e., QuinTags) operate exclusively within their designated frequency bands. By carefully designing the matching network and canceling various interference, a customized QuinReader communicates simultaneously with multiple QuinTags across distinct bands. QuinID maintains high compatibility with commercial RFID systems and presents a tag cost of less than 10 cents. We implement a 5-band QuinID system and evaluate its performance under various settings. The results demonstrate a fivefold increase in read rate, reaching up to 5000 reads per second. © 2025, CC BY.

关键词： Circular polarization   dipole antenna   metasurface   RFID readers   wideband  

摘要： A compact-size wideband circularly polarized dipole array loaded metasurface (MS) is proposed for RFID readers at 2.45 GHz. The proposed array consists of 2 x 2 dipole antennas, two dielectric substrates, a metal ground plane, and a feeding network. The dipoles were printed on the upper substrate (#1), which was suspended over the lower substrate (#2). An MS lattice of 5 x 5 metal plates placed at the bottom of substrate #1 is utilized to improve the impedance bandwidth. For gain enhancement in the high-frequency band, one MS unit cell in the center of the MS lattice is removed. The proposed dipole array is then properly incorporated with a sequential-phase feeding network for circular polarization operations. The final design, with an overall size of 90 mm x 90 mm x 12.032 mm (similar to 0.86 lambda(0) x 0.86 lambda(0) x 0.11 lambda(0) at 2.9 GHz), was fabricated and measured. The prototype array has a measured |S11| < -10 dB bandwidth of 2.07-3.79 GHz (58.7%), a 3-dB axial ratio (AR) bandwidth of 1.80-3.13 GHz (53.95%), a 3-dB gain bandwidth of 2.11-3.47 GHz (48.7%), and a peak gain of 9.52 dBic at 2.7 GHz.

关键词： 员工档案管理   条码技术   RFID   数字化转型  

摘要： 随着信息技术的快速发展,自动识别技术逐渐融入各行各业,展现出巨大的应用潜力。本文深入探讨自动识别技术在事业单位员工档案管理中的应用实践,分析其技术优势、适用场景、潜在问题与解决策略,旨在提升事业单位人力资源管理的效率与质量,助力档案管理的数字化、标准化、智能化转型。

关键词： 煤矿   机电设备   RFID技术   智能运维  

摘要： 煤矿生产安全管理智能化发展背景下,推动机电设备智能运维改进成为技术应用的重要形式。基于RFID技术构建的智能运维管理体系,通过与振动诊断技术结合,构建新型故障诊断体系,推动机电设备运维智能化。本文在分析煤矿机电设备管理内容及问题基础上,说明新型运维管理及故障诊断体系构建方式,推动智慧煤矿建设。

关键词： RFID技术   二维码   酒类包装   防伪溯源   供应链管理  

摘要： 针对酒类市场假酒泛滥、防伪手段单一等问题,可以采用将RFID与二维码技术融合应用于酒类包装防伪溯源系统,本文主要分析两种技术的可行性与优势:RFID技术可实现非接触式快速批量化识别,二维码技术具备低成本和易普及优势,两者的结合可以在酒类包装方面形成双重防伪屏障,该项技术围绕产品唯一身份标识、全流程信息追溯及消费者交互需求,设计“一瓶一码”双标识系统,覆盖生产、流通到消费环节的数据采集与验证,显著提升防伪可靠性与溯源透明度增强消费者信任,为酒类行业构建数字化防伪生态提供有效路径。

关键词： 智能门锁   STM32F407   指纹识别   射频识别   蓝牙  

摘要： 智能门锁作为智能家居的关键部分,提升了家居安全性与使用便捷性。基于STM32F407单片机,采用嵌入式技术和C语言,通过Keil5开发环境设计并实现了一款智能门锁系统,支持数字密码、指纹识别、蓝牙、射频识别等多种解锁方式。该系统操作简单,解锁方式多样,能够满足现代家居和商业环境的多样化及安全需求。

关键词： 信号接收强度   RFID   实时定位   连续定位   桥架型起重机定位  

摘要： 设计了一种基于射频识别(RFID)技术的桥架型起重机大车与小车的高精度定位系统。该系统通过在大车和小车运行轨道上每隔50 cm布设RFID标签(IC卡),并在起重机上安装高灵敏度RFID读卡器,利用读卡器读取标签的信号强度及存在性,结合相应的定位算法,实现了误差不超过20 cm的定位。阐述了系统架构、硬件选型、软件设计、定位算法、实验验证及结果分析,并探讨了该系统的应用前景及未来优化方向。

关键词： RFID技术   配网设备状态检修   开关柜测温   平台设计  

摘要： 为解决配电网设备状态监测的问题,提出了基于RFID技术的状态监测系统。分析了RFID技术的基本概念,说明了配电网主要设备运行状态检修的需求,设计了智能温控系统,说明了系统硬件结构和软件结构。对于RFID无线传感标签,针对标签结构、天线、温度传感器进行了设计,其中温度传感器利用锁相环结构。最后在仿真过程中以开关柜测温为例,说明了所提出系统在测温、通信等方面的有效性。

关键词： 射频识别技术   三方认证   R-LWE密码   新鲜性   穷举攻击  

摘要： 针对现有大多数协议无法实现服务器、电子标签及读写器三方之间相互认证的缺陷,提出一种基于R-LWE(Learning with Errors over Ring)密码体制下可实现三方认证的协议。协议采用理想格对重要隐私信息进行加密,且加密同时混入不同随机数,既可保障隐私信息安全,亦可使得消息具备新鲜性和不确定性。对所设计协议进行安全性分析、基于GNY逻辑形式化证明、性能分析,结果表明该协议具备良好的安全要求、严谨的推理、性能优于其他对比协议。