A necessidade da medicina por equipamentos eletrônicos portáteis, menores, confiáveis e baratos favorece o desenvolvimento de técnicas biotelemétricas passivas de monitoração nas aplicações biomédicas invasivas. Nesse trabalho são apresentados o desenvolvimento e o teste de um dispositivo sensor biotelemétrico passivo, que utiliza a tecnologia de identificação por radio freqüência - RFID (Radio Frequency Identification). O dispositivo desenvolvido, comumente chamado como tag, é comporto basicamente por três partes: a arquitetura RFID utilizada para baixa freqüência, a unidade de controle responsável pelo processamento dos dados e a unidade sensora responsável pela monitoração da pressão arterial. Como o tag e passivo, ou seja, não contém baterias, para que seja ativado é necessário um aparelho que faça sua energização e também decodifique os dados por ele transmitidos. Este aparelho que faz a leitura e envia um sinal para ativar o transponder é comumente chamado de leitora. A leitora utilizada neste projeto terá seu firmware adaptado de forma a processar o valor da pressão enviada pelo tag. São abordados neste trabalho tanto a modelagem teórica do sistema quanto a especificação prática dos componentes para os testes de validação. Na modelagem teórica são apresentados os modelos matemáticos comportamentais do sistema. Os resultados obtidos validam a metodologia utilizada para o desenvolvimento de um sensor RFID passivo que tem como finalidade mensurar a pressão arterial. / The need of medicine for portable electronic equipments smallers [sic], reliables [sic] and inexpensive supports the development of biotelemetry techniques passive monitoring in invasive biomedical applications. In this work are presents [sic] the development and testing of a passive biotelemetry sensor device, which uses the technology of Radio Frequency Identification - RFID. The developed device, commonly referred to as the tag, is basically composed of three parts: the RFID architecture used for low frequency, the control unit responsible for data processing and sensor unit responsible for monitoring blood pressure. As the tag is passive i.e. does not contain batteries to activate it, It [sic] is necessary a device that makes its energizing and also decode the data transmitted by it. This device that reads and sends a signal to activate the transponder is commonly called a reader. The reader used in this project will have its firmware adapted to handle the pressure value sent by the tag. This work also presents theoretical modeling of the system and the specification of components for practicing the validation tests. In theoretical modeling are presented mathematical models of system behavior. The results validate the methodology used for the development of passive RFID sensor that aims to measure blood pressure.

A necessidade da medicina por equipamentos eletrônicos portáteis, menores, confiáveis e baratos favorece o desenvolvimento de técnicas biotelemétricas passivas de monitoração nas aplicações biomédicas invasivas. Nesse trabalho são apresentados o desenvolvimento e o teste de um dispositivo sensor biotelemétrico passivo, que utiliza a tecnologia de identificação por radio freqüência - RFID (Radio Frequency Identification). O dispositivo desenvolvido, comumente chamado como tag, é comporto basicamente por três partes: a arquitetura RFID utilizada para baixa freqüência, a unidade de controle responsável pelo processamento dos dados e a unidade sensora responsável pela monitoração da pressão arterial. Como o tag e passivo, ou seja, não contém baterias, para que seja ativado é necessário um aparelho que faça sua energização e também decodifique os dados por ele transmitidos. Este aparelho que faz a leitura e envia um sinal para ativar o transponder é comumente chamado de leitora. A leitora utilizada neste projeto terá seu firmware adaptado de forma a processar o valor da pressão enviada pelo tag. São abordados neste trabalho tanto a modelagem teórica do sistema quanto a especificação prática dos componentes para os testes de validação. Na modelagem teórica são apresentados os modelos matemáticos comportamentais do sistema. Os resultados obtidos validam a metodologia utilizada para o desenvolvimento de um sensor RFID passivo que tem como finalidade mensurar a pressão arterial. / The need of medicine for portable electronic equipments smallers [sic], reliables [sic] and inexpensive supports the development of biotelemetry techniques passive monitoring in invasive biomedical applications. In this work are presents [sic] the development and testing of a passive biotelemetry sensor device, which uses the technology of Radio Frequency Identification - RFID. The developed device, commonly referred to as the tag, is basically composed of three parts: the RFID architecture used for low frequency, the control unit responsible for data processing and sensor unit responsible for monitoring blood pressure. As the tag is passive i.e. does not contain batteries to activate it, It [sic] is necessary a device that makes its energizing and also decode the data transmitted by it. This device that reads and sends a signal to activate the transponder is commonly called a reader. The reader used in this project will have its firmware adapted to handle the pressure value sent by the tag. This work also presents theoretical modeling of the system and the specification of components for practicing the validation tests. In theoretical modeling are presented mathematical models of system behavior. The results validate the methodology used for the development of passive RFID sensor that aims to measure blood pressure.

Submitted by Maria Eneide de Souza Araujo (mearaujo@ipen.br) on 2017-03-10T15:06:09Z No. of bitstreams: 1 23000.pdf: 2483857 bytes, checksum: ba54fa302ba8e46dabc056e73e8bd8ee (MD5) / Made available in DSpace on 2017-03-10T15:06:09Z (GMT). No. of bitstreams: 1 23000.pdf: 2483857 bytes, checksum: ba54fa302ba8e46dabc056e73e8bd8ee (MD5) / Rejeitos radioativos são gerados em todas as etapas do ciclo do combustível nuclear e em instituições que fazem uso de elementos radioativos. No Brasil, para que possam atender a legislação vigente, eles devem ser devidamente gerenciados e tratados. A caracterização é a etapa do gerenciamento de rejeitos radioativos que certifica e complementa as informações presentes no documento de identificação fornecido pelo gerador dos rejeitos radioativos. O objetivo desse trabalho foi desenvolver uma metodologia para caracterização de tambores de rejeitos radioativos. Neste trabalho foi utilizada a técnica de espectrometria gama associada ao método de Monte Carlo para obter e estabelecer uma relação entre as eficiências de contagens teóricas e experimentais para quatro tambores de calibração com densidades diferentes, preparados com nove tubos de PVC em seu interior. O detector de HPGe utilizado foi posicionado em três diferentes distâncias em relação a extremidade do tambor de calibração. A utilização do método de Monte Carlo mostrou-se adequado a metodologia proposta neste trabalho. / Dissertação (Mestrado em Tecnologia Nuclear) / IPEN/D / Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP

Orientador: Michel Daoud Yacoub / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação / Made available in DSpace on 2018-08-27T01:29:54Z (GMT). No. of bitstreams: 1 Barbin_ManoelVitorio_M.pdf: 5394528 bytes, checksum: f2e1dbef898be5580589baf0e2996f16 (MD5) Previous issue date: 2015 / Resumo: A identificação de objetos através de ondas de radiofrequência ou RFID (Radio Frequency Identification) é uma tecnologia onde uma etiqueta, colocada em um objeto, tem suas informações lidas por um sistema de processamento remoto. Embora esta não seja uma tecnologia recente, sua utilização tem apresentado constante crescimento nos últimos anos. Atualmente, RFID é apontada com uma das principais tecnologias habilitadoras da internet do futuro, a Internet das Coisas, IoT (Internet of Things). Operando principalmente em faixas destinadas para o uso de aplicações médicas, científicas e industriais, ISM (Industrial, Scientific and Medical), sistemas de RFID apresentam diferentes características em função da banda de frequências utilizada. Em UHF (Ultra High Frequency), os sistemas de RFID que fazem uso de etiquetas passivas, são considerados como uma solução com bom desempenho para a identificação de objetos em distâncias que variam de alguns poucos centímetros a vários metros. Contudo, a distância de identificação depende do material que constitui um dado objeto. Por exemplo, metais estão entre os materiais que degradam significativamente o desempenho de sistemas de RFID em UHF, reduzindo a distância de identificação. Diversas soluções de etiquetas têm sido desenvolvidas com o objetivo de torná-las, o máximo possível, insensíveis à presença do metal. Alguns diferentes tipos de antenas foram propostas, entre as quais se destacam as que possuem um plano-terra inerente a sua estrutura, como a de microfita e a planar de F-Invertido, PIFA (Planar Inverted-F Antenna). Uma revisão destas soluções é realizada nesta dissertação. Este trabalho descreve o projeto de uma etiqueta passiva de RFID em UHF, baseado em uma PIFA, para identificação de objetos metálicos colocados em distâncias maiores que oito metros, aproximadamente. O principal objetivo de uso da etiqueta é na identificação de objetos com razoáveis dimensões tais como containers, chapas, canos, etc., frequentemente encontrados em ambientes industriais e armazéns de estocagem. Uma forma diferente de alimentação do sinal de radiofrequência para a antena é desenvolvida. Simulações eletromagnéticas e medições indicam um bom desempenho da etiqueta em uma ampla faixa de frequências, que abrange as principais bandas de operação de RFID em UHF no mundo / Abstract: The identification of objects by radio waves or RFID (Radio Frequency Identification) is a technology where a tag is attached to an object and its information read by a remote processing system. Although it is not a new technology, its use has shown steady growth in recent years. Currently, RFID is identified as one of the main enabling technologies of the future Internet, the Internet of Things, IoT. Operating in the bands intended primarily for use in industrial, scientific and medical (ISM) applications, RFID systems have different characteristics depending on the frequency band used. In the UHF (Ultra High Frequency) band, RFID systems using passive tag are considered as a solution with good performance to identify objects at distances ranging from a few centimeters to several meters. However, the distance of identification depends on the material that the object is made of. For example, metals are materials which can significantly degrade the performance of UHF RFID systems by reducing the distance of identification. Several solutions for tags have been developed in order to make them, as far as possible, insensitive to the presence of metal. Some different types of antennas were proposed, among which are those with a ground plane inherent in its structure, such as the microstrip antenna and the PIFA (Planar Inverted-F Antenna). A review of these solutions is carried out in this dissertation. This document describes the design of a passive RFID tag in UHF, based on a PIFA for identification of metallic objects placed at distances greater than eight meters or so. The main use of the tag is to identify objects with medium or large dimensions such as containers, plates, pipes, etc., often found in industrial environments and storage warehouses. A different kind of RF feeder to the antenna is developed. Electromagnetic simulations and measurements indicate a good tag performance in a wide frequency band, which covers the main RFID UHF operation bands in the world / Mestrado / Telecomunicações e Telemática / Mestre em Engenharia Elétrica

M. Tech. (Department of Process Control and Computer Systems, Faculty of Engineering and Technology), Vaal University of Technology. / Radio Frequency Identification Technology (RFID) technology is increasingly being used in multiple applications due to its low cost and ability to provide a high quality of identification. The cost benefit of RFID system is seen in the reduction in labor required to perform routine tasks such as inventory. With RFID, inventory-related tasks can be done in substantially less time compared to other commonly used auto-identification systems. Recent research has illustrated the application of RFID in multiple application scenarios. RFID can be used for real-time patient identification and monitoring in hospitals, but also for product expiration-date management in retail industries. Some enterprises in South Africa uses a combination of RFID technology and Internet of Things (IoT) to detect misplaced products and to detect low stock levels. Furthermore, RFID is also used for inventory management in libraries as discussed in this dissertation. In this dissertation, a combination of RFID and ZigBee technologies was used to reduce the time spent to perform inventory in libraries. An inventory management system was designed, simulated and built in order to count and locate books inside a library hence improving inventory process time in libraries. The overall results were satisfactory which lead to the achieving of the objectives set in this study.

Yes / A feasibility study of a novel configuration for a super-wide impedance planar antenna is presented based on a 2 × 2 microstrip patch antenna (MPA) using CST Microwave Studio. The antenna comprises a symmetrical arrangement of four-square patches that are interconnected to each other with cross-shaped high impedance microstrip lines. The antenna array is excited through a single feedline connected to one of the patches. The proposed antenna array configuration overcomes the main drawback of conventional MPA with a narrow bandwidth that is typically <5%. The antenna exhibits a super-wide frequency bandwidth from 20 GHz to 120 GHz for S11 < −15 dB, which corresponds to a fractional bandwidth of 142.85%. The antenna’s performance of bandwidth, impedance match, and radiation gain were enhanced by etching slots on the patches. With the inclusion of the slot, the maximum radiation gain and efficiency of the MPA increased to 15.11 dBi and 85.79% at 80 GHz, which showed an improvement of 2.58 dBi and 12.54%, respectively. The dimension of each patch antenna was 4.3 × 5.3 mm2 . The results showed that the proposed MPA is useful for various existing and emerging communication systems such as ultra-wideband (UWB) communications, RFID systems, massive multiple-output multiple-input (MIMO) for 5G, and radar systems. / This work was partially supported by the Innovation Program under grant agreement H2020-MSCA-ITN-2016 SECRET-722424 and financial support from the UK Engineering and Physical Sciences Research Council (EPSRC) under grant EP/E022936/1.

Radio Frequency Identification (RFID) is a new technology which allows people to identify objects automatically but there is a suspicion that, if people are tracked, their privacy may be infringed. This raises questions about how far this technology is acceptable and how privacy should be protected. It is also initiated a discussion involving a wide range of technical, philosophical, political, social, cultural, and economical aspects. There is also a need to consider the ethical and theological perspectives. This dissertation takes all its relevant directions from a Judeo-Christian theological perspective. On one side the use of technology is considered, and on the other side the value of privacy, its infringements and protection are investigated. According to Jewish and Christian understanding human dignity has to be respected including the right to privacy. As a consequence of this RFID may only used for applications that do not infringe this right. This conclusion, however, is not limited to RFID; it will be relevant for other, future surveillance technologies as well. / Philosophy & Systematic Theology / M. Th. (Theological ethics)

This study investigated the factors, best practice, advantages and disadvantages that influence the use of radio frequency identification (RFID) self-help circulation services for service delivery by South African academic libraries with specific emphasis on the University of South Africa (Unisa) Library. Unisa Library Services is the only library service in South Africa that has implemented a fully-fledged RFID self-help circulation service. There must therefore be reasons why other libraries in South Africa have not implemented this type of service. Accordingly, a need was identified to investigate the aspects that should be considered before a library decides to implement such a circulation service. There was also a need to identify the factors, best practice, advantages and disadvantages that influence the use of RFID self-help circulation services. The study gives a brief overview of RFID technology and its use in libraries internationally with specific emphasis on its use for self-help circulation purposes. Through a literature study, certain factors, best practice, advantages and disadvantages that influence the use of RFID self-help circulation services were identified. The identified factors, best practice, advantages and disadvantages were subsequently used to compile questionnaires to obtain information from Unisa library users (students and staff). Only Unisa staff and students who were situated close to Unisa campuses with RFID self-help circulation services were included in the study. During the analysis of the data collected additional factors, best practice, advantages and disadvantages were identified. Recommendations were compiled regarding the factors, best practice, advantages and disadvantages that influence the use of RFID self-help circulation services. These recommendations are meant as a guide for South African libraries when making decisions on the possible implementation and use of RFID self-help circulation services. / Information Science / M.A. (Information Science)

Radio Frequency Identification (RFID) is a new technology which allows people to identify objects automatically but there is a suspicion that, if people are tracked, their privacy may be infringed. This raises questions about how far this technology is acceptable and how privacy should be protected. It is also initiated a discussion involving a wide range of technical, philosophical, political, social, cultural, and economical aspects. There is also a need to consider the ethical and theological perspectives. This dissertation takes all its relevant directions from a Judeo-Christian theological perspective. On one side the use of technology is considered, and on the other side the value of privacy, its infringements and protection are investigated. According to Jewish and Christian understanding human dignity has to be respected including the right to privacy. As a consequence of this RFID may only used for applications that do not infringe this right. This conclusion, however, is not limited to RFID; it will be relevant for other, future surveillance technologies as well. / Philosophy and Systematic Theology / M. Th. (Theological ethics)

A utilização de etiquetas RFID UHF passivas para localização indoor vem sendo amplamente estudada devido ao seu baixo custo. Porém ainda existe uma grande dificuldade em obter bons resultados, principalmente devido à variação de rádio frequência em ambientes que possuem materiais reflexivos, como por exemplo, metais e vidros. Esta pesquisa propõe uma arquitetura de localização para ambientes indoor utilizando etiquetas RFID UHF passivas e técnicas de mineração de dados. Com a aplicação da arquitetura em ambiente real foi possível identificar a posição exata de objetos com a precisão de aproximadamente cinco centímetros e em tempo real. A arquitetura se demonstrou uma eficiente alternativa para implantação de sistemas de localização indoor, além de apresentar uma técnica de derivação de atributos diretos que contribui efetivamente para os resultados finais. / The use of passive UHF RFID tags for indoor location has been widely studied due to its low cost. However, there is still a great difficulty to reach good results, mainly due the radio frequency variation in environments that have materials with reflective surfaces, such as metal and glass. This research proposes a localization architecture for indoor environments using passive UHF RFID tags and data mining techniques. With the application of the architecture in real environment, it was possible to identify the exact position of objects with the precision of approximately five centimeters and in real time. The architecture has demonstrated an efficient alternative for the implantation of indoor localization systems, besides presenting a derivation technique of direct attributes that contributes effectively to the final results.