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关键词： 装配式建筑   区块链   二维码   RFID   溯源  

摘要： 针对装配式建筑建设过程中涉及的主体众多,环节复杂,信息交互复杂且未能有效共享、可信度较低、缺乏质量安全以及溯源管理等问题,提出结合区块链技术以及RFID、二维码等电子标签技术,在装配式建筑工程中应用区块链技术,实现建筑工程项目一体化管理,从而有利于提高施工质量、加快施工进度,有利于安全管理,有利于推动装配式建筑工业化。

关键词： 物流仓储管理   RFID技术   应用策略  

摘要： 文章将针对RFID技术在物流仓储业务中的发展和应用现状,介绍RFID技术与物流仓储管理的基本概念,运用多项文献研究和论述方法对物流仓储系统的应用进行总结,提出相关策略,以期推动RFID技术的物流仓储管理系统在国内得到广泛应用,推动物流行业的发展。

关键词： Radiofrequency identification   Data integration   Intelligent sensors   Production   Industrial Internet of Things   Logistics   Capacitive sensors   Industrial Internet of Things (IIoT)   industrial integration   radio frequency identification (RFID) sensor   radio frequency energy harvesting   product identification  

摘要： The itemized product identification, sensing and data integration are critical building blocks for the efficiency, flexibility, and potential intelligence of the Industrial Internet of Things (IIoT). The product sensing and data integration solutions usually suffer from the sophisticated sensor devices and their inflexible integration with the industrial processes, which may restrict the performance of industrial systems. To maintain an information link for convenient product data integration, this investigation presents a surface mountable dual-mode Radio Frequency Identification (RFID) sensor as a wirelessly powered information interface for simultaneous product identification, sensing, and data integration. The focus of this investigation includes: (1) the theory and hardware/software scheme for sensor-augmented RFID integrating Ultra-High Frequency (UHF) and High Frequency (HF) with Commercial-off-the-Shelf (COTS) devices;(2) integration of the UHF and HF energy and data interfaces to support both UHF and HF powering and sensing;(3) a data integration method supporting sensor data transmission using common UHF and HF readers without extra hardware or software cost;(4) proposal of a model for industrial integration with the proposed dual-mode RFID sensor. The experimental studies and exemplar application demonstrate the feasibility of the presented techniques for industrial integration.

关键词： 自动识别   大数据   血液管理   信息孤岛   云计算   物联网   RFID   信息化管理  

摘要： 血液是生命之源,建立以血液信息化管理为核心的血联网,是国家主导智慧医疗的变革所趋。其中,智慧医疗、健康中国已提升到国家战略层面。运用物联网、大数据、云计算、AI等技术,基于RFID对血液进行自动识别管理,建设智慧血站管理系统,呈现“从血管到血管”的大数据,打通血站与血站之间,血站与医院之间的信息孤岛,从根本上解决长期困扰血站、医院的信息化管理难题。通过数字技术与医疗行业的深度融合,不断提高医疗服务的数字化、网络化、智能化水平,加速重构医疗产业发展与治理的新业态、新模式。

关键词： 无源物联网   蜂窝组网   射频识别   网络架构   链路预算  

摘要： 针对现有物联场景中RFID技术面临的通信距离受限、不支持连续组网和不支持定位三大技术挑战,提出了联合干扰抑制、极简空口协议栈设计、基于蜂窝网络的粗定位等无源物联关键技术。面向未来无源物联网的规模商用,提出两大端到端网络架构,以及7项无线网络架构。通过对CAT1-1/CAT1-2无源标签和CAT2半无源标签的链路预算评估得出,相比于其他的无线网络架构,半无源标签在蜂窝直连架构下的上下行均可以取得98 dB的链路预算,上下行覆盖能力平衡,验证了蜂窝直连架构可以作为网络部署的优选方案。

关键词： 无芯片标签   谐振缝隙   射频识别   物联网  

摘要： 基于频率选择表面基本原理,利用标签结构在频谱特征中形成的特定衰减或反射,形成特定的编码信息,建模仿真了一款5bit的基于频域自谐振器的无芯片电子标签。标签为单层铜箔结构,具有更小的体积,具体尺寸为30mm×30mm,工作频段为4GHz-9GHz。分析了不同参数对谐振频率的影响,制作了两款不同编码的标签进行测试,测试结果符合预期。该标签可以有效降低应用成本,适合用于仓储管理与流通等物联网工程中,具有一定的应用前景。

关键词： 无芯片射频识别湿度传感器   纸基底   湿敏特性   聚乙烯醇薄膜  

摘要： 传统湿度传感器制造工艺复杂、需有线连接信号,对此,文中提出一种纸基无芯片射频识别(Radio Frequency Identification,RFID)湿度传感器。为提升传感器谐振特性,选择非对称开口环内部分布式加载金属碎片作为传感器结构,聚乙烯醇(PVA)作为湿敏材料,使用遗传算法和HFSS射频仿真软件来设计并优化传感器结构。以喷墨打印技术制作传感器样品,采用滴涂法在传感器表面分别制备了5%、10%、15%三种质量浓度比的PVA薄膜。湿敏特性仿真及测试结果一致表明:PVA与纸基底协同作用可显著提高传感器灵敏度。随PVA浓度增加灵敏度增加,15%PVA传感器灵敏度最高,高湿灵敏度达到12.22 MHz/%RH,但随PVA浓度增加恢复特性变差,5%PVA湿度传感器具有良好的恢复特性,恢复度达83.87%。通过长期多次实验验证了PVA纸基湿度传感器具有良好的温度稳定性与中长期稳定性。与同类研究成果对比,文中设计在感湿范围及灵敏度方面有优势且制造工艺更简单,为低成本湿度传感器的大规模使用提供了可能。

关键词： respiratory monitoring   RFID   frequency extraction   waveform reconstruction  

摘要： Respiratory monitoring is widely used in the field of health care. Traditional respiratory monitoring methods bring much inconvenience to users. In recent years, a great number of respiratory monitoring methods based on wireless technology have emerged, but multi-person respiratory monitoring is still very challenging;therefore, this paper explores multi-person respiratory monitoring. Firstly, the characteristics of human respiratory movement have been analyzed, and a suitable tag deployment method for respiratory monitoring is proposed. Secondly, aiming at the ambiguity and entanglement of radio frequency identification (RFID) phase data, a method of removal of phase ambiguity and phase wrapping is given. Then, in order to monitor multi-person respiration in a noisy environment, the frequency extraction method and waveform reconstruction method of multi-person respiration are proposed. Finally, the feasibility of the method is verified by experiments.

关键词： robotics   stigmergy   ROS   UAV   digital pheromones   navigation   exploration   autonomous   inventory   warehouses   aerial navigation  

摘要： Unmanned aerial vehicles (UAVs) and radio frequency identification (RFID) technology are becoming very popular in the era of Industry 4.0, especially for retail, logistics, and warehouse management. However, the autonomous navigation for UAVs in indoor map-less environments while performing an inventory mission is, to this day, an open issue for researchers. This article examines the method of leveraging RFID technology with UAVs for the problem of the design of a fully autonomous UAV used for inventory in indoor spaces. This work also proposes a solution for increasing the performance of the autonomous exploration of inventory zones using a UAV in unexplored warehouse spaces. The main idea is to design an indoor UAV equipped with an onboard autonomous navigation system called RFID-based stigmergic and obstacle avoidance navigation system (RFID-SOAN). RFID-SOAN is composed of a computationally low cost obstacle avoidance (OA) algorithm and a stigmergy-based path planning and navigation algorithm. It uses the same RFID tags that retailers add to their products in a warehouse for navigation purposes by using them as digital pheromones or environmental clues. Using RFID-SOAN, the UAV computes its new path and direction of movement based on an RFID density-oriented attraction function, which estimates the optimal path through sensing the density of previously unread RFID tags in various directions relative to the pose of the UAV. We present the results of the tests of the proposed RFID-SOAN system in various scenarios. In these scenarios, we replicate different typical warehouse layouts with different tag densities, and we illustrate the performance of the RFID-SOAN by comparing it with a dead reckoning navigation technique while taking inventory. We prove by the experiments results that the proposed UAV manages to adequately estimate the amount of time it needs to read up-to 99.33% of the RFID tags on its path while exploring and navigating toward new zones of high pop

关键词： Radio frequency identification   Physically unclonable function (PUF)   Clone attack   Hardware overhead  

摘要： Physically Unclonable Function (PUF) is one of the important research techniques for anti-cloning attacks in Radio Frequency Identification (RFID) tags security. But in RFID tags, there are not quite a few resources left for PUF. Therefore, this paper designs a new lightweight reconfigurable XOR RO PUF, which can simultaneously switch the internal delay of each inverter and the number of ring oscillator stages, increase the delay complexity with less hardware overhead, and generate more multiple authentication keys. In this paper, the proposed PUF circuit design is verified and good performance indicators are obtained. By comparison with the existing PUF low-overhead design, this design has more challenge/response pairs (CRPs) and less hardware overhead without reducing the uniformity, randomness, uniqueness and reliability of the PUF.