Radio frequency identification (RFID) has emerged as a pivotal technology in supply chain management (SCM), significantly enhancing its efficiency and effectiveness. When integrated with the internet of things (IoT) t...Radio frequency identification (RFID) has emerged as a pivotal technology in supply chain management (SCM), significantly enhancing its efficiency and effectiveness. When integrated with the internet of things (IoT) to form RFID-IoT, this technology brings transformative advancements to SCM, enabling automated sensing, pervasive computing, and ubiquitous data access across the entire supply chain, from manufacturers and distributors to retailers and consumers. This integration facilitates real-time identification and monitoring of products, enhances various processes, improves logistic tracking, and ensures better product quality management. Despite its promising benefits, the adoption of RFID-IoT in SCM faces several challenges, including technical complexities, data security concerns, and high implementation costs. However, the future potential of RFID-IoT technology remains substantial. It is anticipated that further integration with other emerging technologies, such as block chain and artificial intelligence, will lead to more comprehensive and robust SCM solutions, offering unprecedented levels of transparency, efficiency, and automation in supply chain operations.展开更多
This paper presents a design for a self-powered radio frequency identification (RFID) tag with a thin film bulk acoustic reso- nating piezoelectric power supply (PPS), which can be used for portable remote temperature...This paper presents a design for a self-powered radio frequency identification (RFID) tag with a thin film bulk acoustic reso- nating piezoelectric power supply (PPS), which can be used for portable remote temperature monitoring. We call this system a PPS-RFID for short. The RFID systems have been found to have many applications in the internet of things (IOT) in the past decade. But semi-active RFID tags require an onboard battery which limits their applications in many fields. For these reasons, our research focuses on power sources for the RFID tags. This paper emphasizes the circuit design and simulation of PPS. In our tests, 0.283 mW was generated by PPS at 1 Hz vibration by a 650 N impact force. The results showed that the integrated PPS could supply sufficient power for the designed PPS-RFID tag. The PPS-RFID tag can be widely used for temperature monitoring during mobile transport of perishable items such as medicines or food.展开更多
Machine Learning has evolved with a variety of algorithms to enable state-of-the-art computer vision applications.In particular the need for automating the process of real-time food item identification,there is a huge...Machine Learning has evolved with a variety of algorithms to enable state-of-the-art computer vision applications.In particular the need for automating the process of real-time food item identification,there is a huge surge of research so as to make smarter refrigerators.According to a survey by the Food and Agriculture Organization of the United Nations(FAO),it has been found that 1.3 billion tons of food is wasted by consumers around the world due to either food spoilage or expiry and a large amount of food is wasted from homes and restaurants itself.Smart refrigerators have been very successful in playing a pivotal role in mitigating this problem of food wastage.But a major issue is the high cost of available smart refrigerators and the lack of accurate design algorithms which can help achieve computer vision in any ordinary refrigerator.To address these issues,this work proposes an automated identification algorithm for computer vision in smart refrigerators using InceptionV3 and MobileNet Convolutional Neural Network(CNN)architectures.The designed module and algorithm have been elaborated in detail and are considerably evaluated for its accuracy using test images on standard fruits and vegetable datasets.A total of eight test cases are considered with accuracy and training time as the performance metric.In the end,real-time testing results are also presented which validates the system’s performance.展开更多
Under industry 4.0, internet of things(IoT), especially radio frequency identification(RFID) technology, has been widely applied in manufacturing environment. This technology can bring convenience to production contro...Under industry 4.0, internet of things(IoT), especially radio frequency identification(RFID) technology, has been widely applied in manufacturing environment. This technology can bring convenience to production control and production transparency. Meanwhile, it generates increasing production data that are sometimes discrete, uncorrelated, and hard-to-use. Thus,an efficient analysis method is needed to utilize the invaluable data. This work provides an RFID-based production data analysis method for production control in Io T-enabled smart job-shops.The physical configuration and operation logic of Io T-enabled smart job-shop production are firstly described. Based on that,an RFID-based production data model is built to formalize and correlate the heterogeneous production data. Then, an eventdriven RFID-based production data analysis method is proposed to construct the RFID events and judge the process command execution. Furthermore, a near big data approach is used to excavate hidden information and knowledge from the historical production data. A demonstrative case is studied to verify the feasibility of the proposed model and methods. It is expected that our work will provide a different insight into the RFIDbased production data analysis.展开更多
随着无线射频识别(Radio Frequency Identification,RFID)系统发展,众多安全和隐私的相关应用对隐私保护认证(Privacy-Preserving Authentication,PPA)技术提出了强烈需求.而PPA应用的先决条件是合法读写器和标签之间存在共享密钥.但由...随着无线射频识别(Radio Frequency Identification,RFID)系统发展,众多安全和隐私的相关应用对隐私保护认证(Privacy-Preserving Authentication,PPA)技术提出了强烈需求.而PPA应用的先决条件是合法读写器和标签之间存在共享密钥.但由于无线信道的开放性,读写器直接向标签写入的密钥会被敌手轻易窃听;此外,RFID标签的计算、存储和通信能力极其有限,导致现有的密钥协商协议不能应用于RFID系统;再者,标签生产商在标签出厂时写入的密钥会带来密钥托管问题并且用户不能自定义密钥.上述原因导致RFID系统中密钥安全生成问题极具挑战性.该文创新性地利用RFID系统中信道不对称性,提出了一种RFID系统密钥无线生成方法WiKey.WiKey是一种轻量级协议可在现有的RFID系统中实现.通过全面的安全性分析,我们展示了WiKey能为PPA协议提供强有力的保护;在WISP标签上的原型实现以及实际测试表明WiKey在现有RFID系统中实现的可行性和高效性.展开更多
基于射频识别技术(Radio frequency identification technology,RFID)和近距离无线组网通讯技术(ZigBee:紫蜂)这两大物联网关键技术,设计以ZigBee协议作为传输协议的物联网主从节点以及RFID读写模块,得到了物联网实验系统的总体方案,并...基于射频识别技术(Radio frequency identification technology,RFID)和近距离无线组网通讯技术(ZigBee:紫蜂)这两大物联网关键技术,设计以ZigBee协议作为传输协议的物联网主从节点以及RFID读写模块,得到了物联网实验系统的总体方案,并实现了一套完整的物联网实验系统硬件平台。测试结果验证了该实验系统完全满足设计要求,可以应用于教学实验,也可作为其他物联网应用系统的开发。展开更多
作为智慧物联的重要技术支撑,无线射频识别(radio frequency identification,RFID)技术,已广泛用于供应链等物品追溯及实时监控领域.为提高基于RFID供应链环境中标签对象路径追溯查询效率,须对RFID时空数据进行有效编码.考虑到RFID供应...作为智慧物联的重要技术支撑,无线射频识别(radio frequency identification,RFID)技术,已广泛用于供应链等物品追溯及实时监控领域.为提高基于RFID供应链环境中标签对象路径追溯查询效率,须对RFID时空数据进行有效编码.考虑到RFID供应链数据具有海量性、存在环路、更新频繁等特点,在2个向量之间可以插入无限个向量的思想基础上,提出了一种偏增向量路径编码策略.该策略以时空数据结点为编码对象,利用向量加法给结点分配唯一1对向量,实现对每个结点时空信息的统一编码.同时,针对码值过大导致的溢出问题提出了优化方案,并进行了正确性证明.实验结果表明:所提出的偏增向量路径编码策略及其优化策略能满足不同类型追溯查询需求,且具有编码速度快、码值溢出速度慢、更新效率高和支持环路等优点.展开更多
文摘Radio frequency identification (RFID) has emerged as a pivotal technology in supply chain management (SCM), significantly enhancing its efficiency and effectiveness. When integrated with the internet of things (IoT) to form RFID-IoT, this technology brings transformative advancements to SCM, enabling automated sensing, pervasive computing, and ubiquitous data access across the entire supply chain, from manufacturers and distributors to retailers and consumers. This integration facilitates real-time identification and monitoring of products, enhances various processes, improves logistic tracking, and ensures better product quality management. Despite its promising benefits, the adoption of RFID-IoT in SCM faces several challenges, including technical complexities, data security concerns, and high implementation costs. However, the future potential of RFID-IoT technology remains substantial. It is anticipated that further integration with other emerging technologies, such as block chain and artificial intelligence, will lead to more comprehensive and robust SCM solutions, offering unprecedented levels of transparency, efficiency, and automation in supply chain operations.
基金supported by the MEMS subject construction fund of the Kunming University of Science and Technology (Grant No. 14078024)
文摘This paper presents a design for a self-powered radio frequency identification (RFID) tag with a thin film bulk acoustic reso- nating piezoelectric power supply (PPS), which can be used for portable remote temperature monitoring. We call this system a PPS-RFID for short. The RFID systems have been found to have many applications in the internet of things (IOT) in the past decade. But semi-active RFID tags require an onboard battery which limits their applications in many fields. For these reasons, our research focuses on power sources for the RFID tags. This paper emphasizes the circuit design and simulation of PPS. In our tests, 0.283 mW was generated by PPS at 1 Hz vibration by a 650 N impact force. The results showed that the integrated PPS could supply sufficient power for the designed PPS-RFID tag. The PPS-RFID tag can be widely used for temperature monitoring during mobile transport of perishable items such as medicines or food.
基金This work was supported by Taif University Researchers Supporting Project(TURSP)under number(TURSP-2020/10),Taif University,Taif,Saudi Arabia.
文摘Machine Learning has evolved with a variety of algorithms to enable state-of-the-art computer vision applications.In particular the need for automating the process of real-time food item identification,there is a huge surge of research so as to make smarter refrigerators.According to a survey by the Food and Agriculture Organization of the United Nations(FAO),it has been found that 1.3 billion tons of food is wasted by consumers around the world due to either food spoilage or expiry and a large amount of food is wasted from homes and restaurants itself.Smart refrigerators have been very successful in playing a pivotal role in mitigating this problem of food wastage.But a major issue is the high cost of available smart refrigerators and the lack of accurate design algorithms which can help achieve computer vision in any ordinary refrigerator.To address these issues,this work proposes an automated identification algorithm for computer vision in smart refrigerators using InceptionV3 and MobileNet Convolutional Neural Network(CNN)architectures.The designed module and algorithm have been elaborated in detail and are considerably evaluated for its accuracy using test images on standard fruits and vegetable datasets.A total of eight test cases are considered with accuracy and training time as the performance metric.In the end,real-time testing results are also presented which validates the system’s performance.
基金supported by the National Natural Science Foundation of China(71571142,51275396)
文摘Under industry 4.0, internet of things(IoT), especially radio frequency identification(RFID) technology, has been widely applied in manufacturing environment. This technology can bring convenience to production control and production transparency. Meanwhile, it generates increasing production data that are sometimes discrete, uncorrelated, and hard-to-use. Thus,an efficient analysis method is needed to utilize the invaluable data. This work provides an RFID-based production data analysis method for production control in Io T-enabled smart job-shops.The physical configuration and operation logic of Io T-enabled smart job-shop production are firstly described. Based on that,an RFID-based production data model is built to formalize and correlate the heterogeneous production data. Then, an eventdriven RFID-based production data analysis method is proposed to construct the RFID events and judge the process command execution. Furthermore, a near big data approach is used to excavate hidden information and knowledge from the historical production data. A demonstrative case is studied to verify the feasibility of the proposed model and methods. It is expected that our work will provide a different insight into the RFIDbased production data analysis.
文摘随着无线射频识别(Radio Frequency Identification,RFID)系统发展,众多安全和隐私的相关应用对隐私保护认证(Privacy-Preserving Authentication,PPA)技术提出了强烈需求.而PPA应用的先决条件是合法读写器和标签之间存在共享密钥.但由于无线信道的开放性,读写器直接向标签写入的密钥会被敌手轻易窃听;此外,RFID标签的计算、存储和通信能力极其有限,导致现有的密钥协商协议不能应用于RFID系统;再者,标签生产商在标签出厂时写入的密钥会带来密钥托管问题并且用户不能自定义密钥.上述原因导致RFID系统中密钥安全生成问题极具挑战性.该文创新性地利用RFID系统中信道不对称性,提出了一种RFID系统密钥无线生成方法WiKey.WiKey是一种轻量级协议可在现有的RFID系统中实现.通过全面的安全性分析,我们展示了WiKey能为PPA协议提供强有力的保护;在WISP标签上的原型实现以及实际测试表明WiKey在现有RFID系统中实现的可行性和高效性.
文摘基于射频识别技术(Radio frequency identification technology,RFID)和近距离无线组网通讯技术(ZigBee:紫蜂)这两大物联网关键技术,设计以ZigBee协议作为传输协议的物联网主从节点以及RFID读写模块,得到了物联网实验系统的总体方案,并实现了一套完整的物联网实验系统硬件平台。测试结果验证了该实验系统完全满足设计要求,可以应用于教学实验,也可作为其他物联网应用系统的开发。
文摘作为智慧物联的重要技术支撑,无线射频识别(radio frequency identification,RFID)技术,已广泛用于供应链等物品追溯及实时监控领域.为提高基于RFID供应链环境中标签对象路径追溯查询效率,须对RFID时空数据进行有效编码.考虑到RFID供应链数据具有海量性、存在环路、更新频繁等特点,在2个向量之间可以插入无限个向量的思想基础上,提出了一种偏增向量路径编码策略.该策略以时空数据结点为编码对象,利用向量加法给结点分配唯一1对向量,实现对每个结点时空信息的统一编码.同时,针对码值过大导致的溢出问题提出了优化方案,并进行了正确性证明.实验结果表明:所提出的偏增向量路径编码策略及其优化策略能满足不同类型追溯查询需求,且具有编码速度快、码值溢出速度慢、更新效率高和支持环路等优点.
