教学课程资源库 更多>>

关键词： RFID技术   电力物资   仓储管理   配送模式  

摘要： 物流业快速发展造成仓储配送压力增大,传统的仓储和配送模式难以满足日益增长的需求,而RFID技术有助于建立科学有效的仓储配送体系。本研究详细分析了RFID系统的工作原理、架构设计,探讨了其在仓储、配送中的应用流程,提出了优化RFID信号传输、增强数据安全性的具体措施,以期为电力行业物资管理提供创新的解决方案。

关键词： 光伏巡检   巡检点   RFID   QR-code   位姿校正  

摘要： 由于光伏发电站视野开阔、场地空旷,光伏阵列环境特征稀疏,相似性高,光伏巡检机器人巡检定位和导航过程中容易因为特征近似出现定位劣化问题。根据光伏电站特性和巡检需求特性,提出一种使用RFID信标和QR-Code标牌为光伏巡检机器人提供巡检点定位与姿态校正信号,实现发生定位劣化后位姿准确校正的方法。并通过巡检点预设巡检采集朝向参数校正巡检台上的设备朝向,调整巡检拍摄视场和角度,为光伏巡检自动识别提供更加有效且易用的巡检数据,在持续的位姿校正过程中保障巡检覆盖率。通过Gazebo仿真测试,对运行的光伏巡检机器人模拟产生定位劣化情况,测试结果表明当发生定位劣化后,光伏巡检机器人可以通过该位姿校正方法,实现位姿校正。通过重复性实验,测得校正成功率超过95%,验证了该方法的有效性,为光伏巡检机器人应用提供了参考。

关键词： 核电物资   RFID   自动盘点  

摘要： 核电物资具有库存种类多、库存量大的特点,传统的物资盘点方式占用大量人力,存在盘点效率低、盘点误差大的缺点。本文基于核电物资自动、精准盘点功能建设实际情况,介绍了自动盘点的技术选择、技术方案设计及实施、建设成果等。

关键词： 工业物联网   生产线   故障预测   RFID   传感器   机器学习  

摘要： 随着物联网技术的迅速发展,工业物联网(IIoT)将成为未来工业发展的新趋势。在此背景下,研究了基于传感器和射频识别(RFID)技术的半导体生产线设备故障预测方法。首先,使用RFID射频识别系统收集生产线上各个设备的温度、压力等参数;然后,通过机器学习算法构建故障预测模型,对设备运行状态进行分析和预测,从而为生产线管理者提供准确的设备运行状况,以便其及时有效地采取维护措施,确保生产安全、高效地进行。实验结果表明,该方法能够实现对生产线故障的精准预测,并且具有较高的准确性和稳定性。此外,该方法还可扩展到其他需要实时监测设备运行状态的场景中。

关键词： 防汛抗旱   集中储备   装备管理   智能化管理   RFID   物资管理  

摘要： 防汛抗旱集中储备装备物资管理工作是防汛抗旱的重要基础和保障,目前这一领域的智能化管理系统比较缺乏。针对目前区县防汛抗旱集中储备装备物资智能化管理的现状和存在的问题,基于物联网、RFID等技术设计了区县级防汛抗旱集中储备装备物资智能化管理系统。该系统包含装备物资统计查询、物资监控、物资盘点、供应链管理、物资管理、标签初始化、数据可视化等功能。其中数据可视化功能尤为突出,不仅能够利用RFID技术自动查找并定位标签,还实现了声光报警标签的集成应用,同时支持仓储数据的获取、仓库安防监控、门禁管理和重要物资跟踪。这一功能模块是防洪保安抗旱减灾体系的重要组成部分。该系统能够为实现指挥决策科学化、应急处置规范化、防汛抢险专业化提供有力的防汛物资储备支撑与保障。

关键词： BIM   部品部件   智慧工厂   精细化管理   RFID  

摘要： 基于BIM技术搭建智慧工厂管理平台,将BIM软件设计完成的图纸传送到智慧工厂系统,完成信息导入;生产过程中,通过二维码(或RFID)对构件生产过程进行管理;生产准备、隐检、成品检、入库、装车、卸车、安装等通过RFID进行构件信息跟踪追溯。

关键词： Dual frequency resonant RFID   Gas sensor   Formaldehyde   Ammonia   Indoor air  

摘要： A dual-frequency passive radio frequency identification (RFID) gas sensor based on zinc oxide (ZnO)/molybdenum disulfide (MoS2)/tungsten trioxide (WO3)/reduced graphene (rGO) is proposed for indoor detection of formaldehyde and ammonia concentrations. The antenna model is designed on the antenna simulation software, and then, the antenna is made by the engraving mechanism. Nano-sensitive materials are prepared by the hydrothermal method to characterize the materials, and then, different combinations of materials are coated on both sides of the antenna to produce gas-sensitive sensors. The experimental results show that one frequency point of the sensor works in the range of formaldehyde concentration of 0.08-1.14 ppm, amplitude variation is 17.11 dB, linearity R2 = 0.97. The sensor operates at another frequency in the ammonia concentration range of 5-100 ppm, the amplitude changes to 12.7 dB, and the linearity R2 = 0.99. Compared with the previous gas sensors, the sensor has wide measuring range, high sensitivity, good selectivity, is lightweight and portable, and provides high anti-interference ability.

关键词： Antenna arrays   Dipole antennas   Gain   Antenna measurements   Antenna feeds   Radiofrequency identification   Dual band   Antenna radiation patterns   Microstrip antennas   Frequency measurement   Antenna array   circularly polarized (CP)   dual-band   radio frequency identification (RFID)  

摘要： In this letter, a dual-band rotational feed circularly polarized (CP) antenna array is proposed. The dual-band antenna element consists of two pairs of symmetric dipoles. The low-frequency CP radiation is achieved by the longer dipole pair, and the high-frequency radiation is mainly superimposed by the shorter dipole pair of the fundamental mode and the longer dipole pair of the higher-order mode. A compact and low-profile antenna array with a 1-to-4 rotational feeding network is introduced. The measured |S-11| < -10.0 dB of the array is in the frequency range of 0.8 GHz to 1.26 GHz and 2.15 GHz to 2.82 GHz. The measured axial-ratio (AR) bandwidth is approximately 36.3% (3 dB) in the low-frequency band and 24.5% (1.5 dB) in the high-frequency band. The realized gain reaches approximately 7.7 dBic and 12.3 dBic with symmetric radiation patterns.

关键词： electric coupling near-field antenna   printer   radio-frequency identification (RFID)   reader antenna  

摘要： In this paper, a novel ultra high frequency (UHF) radio-frequency identification (RFID) near-field reader antenna is proposed. Based on an edge-coupled spiral composite right/left-handed transmission line (ES-CRLH-TL), the antenna aims to address the misreading of tightly-placed adjacent tags in roll-to-roll fabrication, which is a common challenge for RFID printers during the customization process of RFID tags. The proposed ES-CRLH cell can concentrate and enhance the tangential electric field EY (the direction of primary polarization) by incorporating interdigital capacitors and edge-spiral line structures, while the series cell achieves a uniform longitudinal distribution. The traveling wave transmission line facilitated by the CRLH structure ensures that the reflection coefficient S11 remains below -15 dB across the entire UHF frequency band (860-960 MHz). The feasibility of the proposed design is verified through simulation and measurement of a 5-cell series antenna. The antenna can effectively discriminate tags that are in close proximity, requiring a minimum activation power for the tag of less than 0 dBm and a separation of only 5 mm between adjacent tags. The proposed antenna exhibits high coupling efficiency and spatial selectivity, rendering it suitable for printer applications with tags in worldwide bands.

关键词： Sensors   Interference   Signal to noise ratio   Backscatter   Integrated sensing and communication   Quality of service   NOMA   Vectors   Internet of Things   Energy efficiency   Backscatter communication   integrated sensing and communication   lagrangian dual transform   non-orthogonal multiple access (NOMA)   sum-rate maximization  

摘要： This letter investigates a non-orthogonal multiple access (NOMA)-enabled multi-user transmission system in a backscatter communication environment with integrated sensing and communication (ISAC). In this configuration, a base station (BS) simultaneously serves multiple users through a communication beam while utilizing a sensing beam to detect the presence of an radio frequency identification (RFID) tag. A joint beamforming design problem is formulated to maximize the sum-rate for the users while considering the constraints for successive interference cancellation (SIC) and the minimum quality of service (QoS) for all the communication users and the detection of the tag. Lagrangian dual transformation is used to address the non-convex nature of the objective function. Due to the coupling of variables, an alternating optimization (AO) based algorithm is proposed with guaranteed convergence. Through numerical simulations, we validate the efficacy of our proposed algorithm. Furthermore, we assess the impact of several key parameters on system performance, including the number of transmitting antennas at the BS, the available transmit power at the BS, the minimum QoS for the communication users, and the number of communication users.