An RFID Bulk Cargo Supervising System

In this work, a system using active RFID tags to supervise truck bulk cargo is described. The tags are attached to the bodies of the trucks and readers are distributed in the cargo buildings and attached to weighs and the discharge platforms. PDAs with camera and support to a WiFi network are provided to the inspectors and access points are installed throughout the discharge area to allow effective confirmations of unload actions and the acquisition of pictures for future audit. Broadband radio equipments are used to establish efficient communication links between the weighs and cargo buildings which are usually located very far from each other in the field. A web application software was especially developed to enable robust communication between the equipments for efficient device management, data processing and reports generation to the operating personal. The system was deployed in a cargo station of a Brazilian seashore port. The obtained results prove the effectiveness of the proposed system.

RFID adoption: framework and survey in large Brazilian companies

Purpose - The purpose of this paper is to provide a framework for radio frequency identification (RFID) technology adoption considering company size and five dimensions of analysis: RFID applications, expected benefits business drivers or motivations barriers and inhibitors, and organizational factors. Design/methodology/approach - A framework for RFID adoption derived from literature and the practical experience on the subject is developed. This framework provides a conceptual basis for analyzing a survey conducted with 114 companies in Brazil. Findings - Many companies have been developing RFID initiatives in order to identify potential applications and map benefits associated with their implementation. The survey highlights the importance business drivers in the RFID implementation stage, and that companies implement RFID focusing on a few specific applications. However, there is a weak association between expected benefits and business challenges with the current level of RFID technology adoption in Brazil. Research limitations/implications - The paper is not exhaustive, since RFID adoption in Brazil is at early stages during the survey timeline. Originality/value - The main contribution of the paper is that it yields a framework for analyzing RFID technology adoption. The authors use this framework to analyze RFID adoption in Brazil, which proved to be a useful one for identifying key issues for technology adoption. The paper is useful to any researchers or practitioners who are focused on technology adoption, in particular, RFID technology.

RFID together with multi-agent systems to control global value chains

Nowadays, the cooperative intelligent transport systems are part of a largest system. Transportations are modal operations integrated in logistics and, logistics is the main process of the supply chain management. The supply chain strategic management as a simultaneous local and global value chain is a collaborative/cooperative organization of stakeholders, many times in co-opetition, to perform a service to the customers respecting the time, place, price and quality levels. The transportation, like other logistics operations must add value, which is achieved in this case through compression lead times and order fulfillments. The complex supplier's network and the distribution channels must be efficient and the integral visibility (monitoring and tracing) of supply chain is a significant source of competitive advantage. Nowadays, the competition is not discussed between companies but among supply chains. This paper aims to evidence the current and emerging manufacturing and logistics system challenges as a new field of opportunities for the automation and control systems research community. Furthermore, the paper forecasts the use of radio frequency identification (RFID) technologies integrated into an information and communication technologies (ICT) framework based on distributed artificial intelligence (DAI) supported by a multi-agent system (MAS), as the most value advantage of supply chain management (SCM) in a cooperative intelligent logistics systems. Logistical platforms (production or distribution) as nodes of added value of supplying and distribution networks are proposed as critical points of the visibility of the inventory, where these technological needs are more evident.

A study on the encryption algorithm for RFID tag (SEED : 8 Rounds �� 64 bits block)

Although it is always weak between RFID Tag and Terminal in focus of the security, there are no security skills in RFID Tag. Recently there are a lot of studying in order to protect it, but because it has some physical limitation of RFID, that is it should be low electric power and high speed, it is impossible to protect with the skills. At present, the methods of RFID security are using a security server, a security policy and security. One of them the most famous skill is the security module, then they has an authentication skill and an encryption skill. In this paper, we designed and implemented after modification original SEED into 8 Round and 64 bits for Tag.

Projecto de implementa����o RFID na empresa ATEC

Mestrado em Engenharia Electrot��cnica e de Computadores

RFID passive tag antenna for cork bottle stopper

In this paper we propose a possible design for a RFID tag antenna embedded into cork. The antenna is small and conformal and intended to be used into bottle stoppers for tracking and logging purposes of wine or other beverages. The proposed design is based on an inductive ring and an added resistance in order to modify the current distributions of the antenna. The resulting antenna has a relatively directive radiation pattern and despite the small efficiency it is able to operate with a commercial RFID reader at a reasonable distance. �� 2014 IEEE.

UHF RFID tag antenna for bottle labeling

In this paper we present a possible design for a passive RFID tag antenna on paper substrate to be integrated into bottle labels. Considering the application scenario, we verified and determined the permittivity and dissipation factor of the materials in order to simulate all the possible sources that would influence the antenna performance. The measured results reported a maximum reading range of 1.45 m even though the efficiency obtained with the antenna integrated into the bottle was only of 3%. �� 2014 IEEE.

RFID-based wireless passive sensors utilizing cork materials

This paper presents the design of low-cost, conformal UHF antennas and RFID tags on two types of cork substrates: 1) natural cork and 2) agglomerate cork. Such RFID tags find an application in wine bottle and barrel identification, and in addition, they are suitable for numerous antenna-based sensing applications. This paper includes the high-frequency characterization of the selected cork substrates considering the anisotropic behavior of such materials. In addition, the variation of their permittivity values as a function of the humidity is also verified. As a proof-of-concept demonstration, three conformal RFID tags have been implemented on cork, and their performance has been evaluated using both a commercial Alien ALR8800 reader and an in-house measurement setup. The reading of all tags has been checked, and a satisfactory performance has been verified, with reading ranges spanning from 0.3 to 6 m. In addition, this paper discusses how inkjet printing can be applied to cork surfaces, and an RFID tag printed on cork is used as a humidity sensor. Its performance is tested under different humidity conditions, and a good range in excess of 3 m has been achieved, allied to a good sensitivity obtained with a shift of >5 dB in threshold power of the tag for different humid conditions.

Humidity passive sensors based on UHF RFID using cork dielectric slabs

In this paper we show the design of passive UHF RFID tag antenna on cork substrate. Due to the cork sensitivity to humidity changes, we can use the developed sensor to sense changes in the relative humidity of the environment, without the need for batteries. The antenna is built using inkjet printing technology, which allows a good accuracy of the design manufacturing. The sensor proved usable for humidity changes detection with a variation of threshold power from 11 to 15 dB between 60 and near 100% humidity levels. Presenting, therefore, reading ranges between 3 to 5 meters. �� 2015 EurAAP.

Localiza����o segura de objectos autenticados por RFID

Trabalho apresentado no ��mbito do Mestrado em Engenharia Inform��tica, como requisito parcial para obten����o do grau de Mestre em Engenharia Inform��tica

An��lisis y optimizaci��n del radio enlace en un sistema RFID

El proyecto tiene como principal objetivo lograr mejorar el enlace entre el tag y el Reader, en un sistema RFID (Radio Frecuency IDentification). El mismo ser�� abordado desde dos ��pticas de trabajo; La primera, es lograr el mismo alcance de los sistemas actuales, reduciendo la potencia aportada por el Reader. En esta situaci��n su principal aplicaci��n ser�� en los implantes en seres vivos, disminuyendo la radiaci��n electromagn��tica en los mismos. La segunda, es lograr aumentar la distancia del alcance del enlace, sin aumentar la potencia del Reader.

An��lisis y optimizaci��n del radio enlace de un sistema RFID y redes de sensores inal��mbricos (WSN)

Un sistema inal��mbrico en UHF puede ser utilizado tanto para la identificaci��n de productos como para la adquisici��n de datos. Si se encuadra en la identificaci��n se est�� refiriendo a sistemas ���RFID��� y si se encuadra en la adquisici��n de datos se est�� en presencia de una ���Red de Sensores Inal��mbrica���. El presente proyecto pretende desarrollar una plataforma de discusi��n permanente sobre estas tecnolog��a que permita la optimizaci��n de los diferentes estamentos de la red. El proyecto tiene como objetivo general mejorar las prestaciones del vinculo entre los distintos elementos en un sistema RFID (Radio Frecuency Identification) o WSN (Wireless Sensor Network). En tal sentido, se propone en una primer l��nea de investigaci��n, el desarrollo de un modelo que caracterice una red inal��mbrica de sensores en UHF, permitiendo luego simularla bajo distintas condiciones. El objetivo es tener una herramienta con la cual se pueda estudiar y simular el comportamiento de una red con varios nodos. Una segunda l��nea de trabajo aborda el problema del test para sistemas RFID y WSN, con ��nfasis en nodos activos y pasivos dise��ados con circuitos anal��gicos y digitales configurables y componentes comerciales. As��, se propone el desarrollo de estrategias de test de bajo consumo y alto desempe��o focalizadas en las secciones anal��gicas, de conversi��n y digitales configurables del nodo. Los trabajos espec��ficos planteados para responder a los objetivos que se pretenden son: La caracterizaci��n y modelado del enlace inal��mbrico en UHF; La caracterizaci��n y modelado del transceptor en sus distintas etapas; La caracterizaci��n y modelado de la red con los distintos nodos; El estudio de nuevos dise��os de antenas; El estudio de distintas adaptaciones de la etapa de RF con la antena; El estudio de alternativas de distintas modulaciones de las se��ales a transmitir; Proponer estrategias de simulaci��n y/o emulaci��n de fallas para sistemas anal��gicos y digitales que permita la evaluaci��n de las estrategias de test y de los mecanismos de recuperaci��n ante fallas; Evaluar el funcionamiento en laboratorio y en campo de los nodos y el lector

Aplicaci�� de la tecnologia RFID a les cadenes de subministrament: estudi de viabilitat

El present treball ��s un projecte d'aplicaci�� de la tecnologia RFID a les cadenes de subministrament per tal de millorar-ne la gesti�� interna i d'augmentar l'efici��ncia i la productivitat de les empreses d'aquest sector.

Radio frequency identification (RFID) of dentures in long-term care facilities.

STATEMENT OF PROBLEM: The difficulty of identifying the ownership of lost dentures when found is a common and expensive problem in long term care facilities (LTCFs) and hospitals. PURPOSE: The purpose of this study was to evaluate the reliability of using radiofrequency identification (RFID) in the identification of dentures for LTCF residents after 3 and 6 months. MATERIAL AND METHODS: Thirty-eight residents of 2 LTCFs in Switzerland agreed to participate after providing informed consent. The tag was programmed with the family and first names of the participants and then inserted in the dentures. After placement of the tag, the information was read. A second and third assessment to review the functioning of the tag occurred at 3 and 6 months, and defective tags (if present) were reported and replaced. The data were analyzed with descriptive statistics. RESULTS: At the 3-month assessment of 34 residents (63 tags) 1 tag was unreadable and 62 tags (98.2%) were operational. At 6 months, the tags of 27 of the enrolled residents (50 tags) were available for review. No examined tag was defective at this time period. CONCLUSIONS: Within the limits of this study (number of patients, 6-month time span) RFID appears to be a reliable method of tracking and identifying dentures, with only 1 of 65 devices being unreadable at 3 months and 100% of 50 initially placed tags being readable at the end of the trial.

Dise��o de antenas UHF para aplicaciones RFID

Aquest projecte es basa en l'estudi, disseny i avaluaci�� d'antenes per a aplicacions RFID a la banda UHF. Les etiquetes RFID estan compostes per un xip i una antena que han de presentar una bona adaptaci�� per a aconseguir m��xima transfer��ncia de pot��ncia. Els dos objectius principals en els diferents fases de disseny de cada antena han estat optimitzar les seves dimensions, i incrementar l'ample de banda.