Virtual Sensors
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. Sensor virtual inteligente para estimação de composições em colunas de destilação / Intelligent virtual sensor for composition estimation in distillation columns
Um problema-chave envolvendo processos químicos industriais é controlar, de forma confiável, eficiente e barata, a evolução dinâmica do sistema. Numa coluna de destilação, por exemplo, o objetivo do controle é manter a composição do destilado e do produto de fundo em torno de um valor desejado. As dificuldades operacionais e o alto custo dos anali
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/05/2012
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2. Desenvolvimento de procedimento e Soft-Sensors para controle de plantas de PET / Development of procedures and Soft-Sensors for control in PET plants
Neste trabalho são apresentados três estudos distintos de aplicação de Plantwide Control. A primeira aplicação trata-se de um controle antecipativo (feedforward) para controlar os níveis dos reatores na etapa de polimerização, a fim de reduzir suas variabilidades e, consequentemente, a produção de refugo, sendo que, em uma planta de Politereftalat
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/10/2011
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3. Estudo com sensores para a mensuração de falhas nas fileiras de cana-de-açucar (Sacchararum SSP.) / Study with sensors for measuring gaps in the rows of sugar cane (Saccharum ssp.)
Brazil is the world\ s largest producer of sugarcane and has a booming market. Because of the productive potentiality and profitability of sugarcane the interest in site specific management techniques and demand for new technologies are increasing. Therefore this project aims to study options of sensors for measurement and georeferencing of failures, explori
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/09/2011
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4. A conceptual image-based data glove for computer-human interaction
Data gloves are devices equipped with sensors that capture the movements of the hand of the user in order to select or manipulate objects in a virtual world. Data gloves were introduced three decades ago and since then have been used in many 3D interaction techniques. However, good data gloves are too expensive and only a few of them can perceive the full se
Publicado em: 2010
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5. Rede neural artificial para monitoramento em tempo real da concentração de potássio na vinhaça in natura / Artificial neural network for real-time monitoring of the concentration of potassium in the stillage in natura
The cultivation of sugar cane (Saccharum officinarum) has significant presence in Brazils history, from colonization. In its industrial process, are obtained the following products: sugar, ethanol (anhydrous and hydrated), and its main products are: marc - used for power generation - and stillage - re-applied as fertilizer in farming. The use of vinasse on t
Publicado em: 2010
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6. Desenvolvimento e aplicações de sensores de campo magnético por indução : [dissertação]
This work addresses the development of magnetic elds meters at low frequencies. The sensing elements used are induction coils and the Chattock-Rogowski coils, both with non-ferromagnetic cores. Theoretical and experimental studies on the working principle of these sensors are presented, considering the practical aspects related to their non-ideal behavior. T
Publicado em: 2009
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7. An approach to inter-domain resource reservation for QoS management in next generation networks / Uma abordagem para reserva de recursos no gerenciamento de QoS entre dominios em redes de proxima geração
The technological evolution that happened on the last decades fostered the steep growth of the Internet, the creation of new Internet capable devices, like sensors and PDAs, and the creation of a multitude of online applications. This new scenario brought challenges very different from those initially considered on the creation of the Internet, so emerged th
Publicado em: 2009
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8. Protocolo ISO 11783: procedimentos para comunicação serial de dados do controlador de tarefa / ISO 11783 protocol: procedures for serial data communication with the task controller
The recent growth of automation technology and embedded electronic in agricultural machinery has established a new practice in agriculture. These new practices related to precision agriculture (PA) have demanded the use of sensors and communications embedded networks for data acquisition and control devices in the farm field. The incompatibility between hard
Publicado em: 2009
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9. A methodology for development augmented reality applications using mobile phones and sensors devices. / Uma metodologia para o desenvolvimento de aplicações de realidade aumentada em telefones celulares utilizando dispositivos sensores.
Handheld Augmented Reality or Handheld AR is the implementation of Augmented Reality (AR) systems into handheld devices. Handheld AR applications use the handheld devices camera to recognize markers (inserted into the environment). This process enables data entry into AR system. The response generated for these applications are presented as virtual images (3
Publicado em: 2008
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10. Visualização e simulação de sinais cardiológicos utilizando técnicas de realidade aumentada
Nowadays, the presence of computers is noted, even subtle, in almost every area of human knowledge and activity. The advantages emerged by computers are many, but there are still drawbacks that need efficient solutions. The tech devices and audiovisual ways of communication between the user and computers are still a great challenge, because to use successful
Publicado em: 2008
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11. Modelagem endoscÃpica virtual do monitoramento de equipamentos elÃtricos de alta tensÃo
With the promulgation of the 10.847/2004 and 10.848/2004 Laws, the Brazilian Power Sector started adopting competitiveness as the main element for obtaining concessions in the electric power system transmission and generation sectors. In this sense, the power sector companies will have to strongly intensify the monitoring processes of the power system equipm
Publicado em: 2007
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12. Virtual instrumentation applied to electrical engineering education. / Instrumentação virtual aplicada ao ensino experimental de engenharia elétrica.
The proposal of this work is to present some potential applications of the software LabVIEW, from National Instruments, associated with data acquisition hardware, applied to experiments in the Electric Energy Systems area as a tool to support the presential education. This dissertation shows the developing of an experience in a electric energy system laborat
Publicado em: 2007