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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Integration of LabVIEW to Monitor and Control of the Switched Reluctance Motor

Wang, Bao-Ren 03 August 2004 (has links)
With the rapid development of power electronic devices and microprocessor chips, the engineers and researchers have come to pay more attentions to the feasibility of the control and drive for the switched reluctance motor. This motor has lots of advantages of low-cost, high efficiency, high stability and high hot emissive. And, it can be well operated under high temperature environment. In this paper, A newly control and monitor system is proposed with DSP-based driver system and the user-friendly LabVIEW software. The TMS320C240 chip-set is applied to construct the motor-driving system and to produce the PWM signal for the switched motor. The graphic user interface (GUI) is designed by using LabVIEW. The functions of the proposed human/machine interface (MMI) system includes the multi-channel digital I/O acquisition, the voltage/current signal acquisition,and the protocol setting.
2

Distributed Power Control and Monitoring System with Internet Integration

Wang, Long-Cheng 28 June 2002 (has links)
With the rapid development of Internet and computer technology, users can already have many applications with remote Control and Monitoring ¡]CM¡^capability, including the CM on hardware power devices. Form the state-of-the-art Internet Technology the server-side computer can be used to integrate all client-side CM devices with distributive process and unified management to realize the development of distributed power CM system with Internet integration, which is also the goal of this thesis. The Internet based distributed power control and monitoring system was proposed in this thesis by the use of 8051 Micro-controller to develop a low cost, high stability, and user-friendly CM devices for home and factory uses. LabVIEW language was used to develop the Man-Machine Interface (MMI), and DataSocket tool was used to share the information on net. The MMI¡¦s designed for the CM devices are Multi-channel digital Input/Output acquisition system, Voltage/Current acquisition system and Temperature acquisition System. In this thesis, we used newly developed Internet technology and standards, also developed ActiveX control by using programming-language tools. So the ActiveX control will be embedded in the web browsers. Using ASP (Active Server Page) and Dynamic HTML for development, this research also built a web database system on Internet.
3

Programming and Implementation of Remote Power Analysis and Monitoring controller Using LabVIEW

Chou, Shiow-Chyn 24 July 2003 (has links)
The design and implementation of LabVIEW-aided power system SCADA (Supervisory Control And Data Acquisition) for industrial applications is presented in this thesis. The system includes some sensors¡Bcontrol hardware, and two fore-microprocessors; and it runs in the environment of popular windows by personal computer, using LabVIEW between human and machine. The mainframe computer can get the electrical power parameters (such as voltage¡Bcurrent and power factor )from the fore-microprocessor via RS-485 communication interface. All of the power parameters and control signals are transmitted upon the network, so it can also command the remote controllers to detect the status and control the switching gear of the remote equipments. These data can be recorded and stored simultaneously in the LabVIEW environment and displayed on the screen. The design accomplishes function of signal acquisition and data transmission features low cost¡Bhigh stability, with remote controller, and easy expansion. It can mange and control the conventional household or industrial electric equipment, to achieve the goal of energy conservation.
4

A Real-Time Telemetry Data Processing System with Open System Architecture

Jun, Zhang, MeiPing, Feng, Yanbo, Zhu, Bin, He, Qishan, Zhang 10 1900 (has links)
International Telemetering Conference Proceedings / October 17-20, 1994 / Town & Country Hotel and Conference Center, San Diego, California / In face of the characteristics of multiple data streams, high bit rate, variable data formats, complicated frame structure and changeable application environment, the programmable PCM telemetry system needs a new data processing system with advanced telemetry system architecture. This paper fully considers the characteristics of real-time telemetry data processing, analyzes the design of open system architecture for real-time telemetry data processing system(TDPS), presents an open system architecture scheme and design of real-time TDPS, gives the structure model of distributed network system, and develops the interface between network database and telemetry database, as well as telemetry processing software with man-machine interface. Finally, a practical and multi-functional real-time TDPS with open system architecture has been built, which based on UNIX operating system, supporting TCP/IP protocol and using Oracle relational database management system. This scheme and design have already proved to be efficient for real-time processing, high speed, mass storage and multi-user operation.
5

Pilot reported human factor cockpit discrepancies in naval aircraft

Daniels, Gene Leroy 03 1900 (has links)
Approved for public release; distribution is unlimited / This thesis investigates the problems in current naval aircraft cockpits as perceived by fleet naval aviators who are students at the U.S. Naval Aviation Safety School. A critical incident questionnaire provides data that examines the deficiencies of an individual aircraft. These individual aircraft deficiencies are then categorized into twelve major deficiency categories which are common to ore than one aircraft. Various recommendations are made concerning standards, specifications, cockpit research and cockpit design. / http://archive.org/details/pilotreportedhum00dani / Commander, United States Navy
6

Rastreamento labial: aplicação em leitura labial. / Lip tracking: an application in lip reading.

Negreiros, Tupã 07 November 2012 (has links)
Novas interfaces homem-computador têm sido pesquisadas a fim de se tornarem mais naturais e flexíveis. O rastreamento labial, foco deste trabalho, é parte deste contexto, podendo ser utilizado na detecção de emoções, bem como no auxílio ao reconhecimento de voz. Pode assim tornar-se um módulo inicial para a leitura labial, na criação de interfaces voltadas a deficientes auditivos. Os algoritmos disponíveis na literatura foram analisados e comparados, mostrando os prós e contras de cada método. Finalmente foi escolhido desenvolver uma técnica baseada em Active Appearance Model (AAM). O AAM gera um modelo a partir de um conjunto de imagens de treinamento, que pode ser utilizado no rastreamento labial de novas imagens. A técnica proposta baseia-se no uso de algoritmos genéticos para o ajuste do modelo, diferente, portanto, da técnica proposta originalmente pelo AAM. A convergência da técnica proposta foi extensivamente analisada, com a variação de parâmetros, buscando a análise de erro residual da função custo e sua relação com o tempo de convergência e erro de posição. / New human-computer interfaces have been researched to make them more natural and flexible. The lip tracking, emphasis of this work, is part of this setting it can be used for detecting emotions and to aid the speech recognition. It may well become an initial module for lip-reading, in the creation of interfaces directed to hearing impaired people. Algorithms available on literature are analyzed and compared, explaining the upsides and downsides of each method. Finally was chose to develop a technique based on Active Appearance Model (AAM). The AAM generates a model from a set of training images, which can be used in tracking of new lip images. The proposed technique is based on the use of genetic algorithms for fitting the model, different therefore of the technique originally proposed by AAM. The convergence of the proposed technique has been extensively analyzed with the variation of parameters, searching the error analysis of the cost function residual error and its relation to the execution time and position error.
7

Rastreamento labial: aplicação em leitura labial. / Lip tracking: an application in lip reading.

Tupã Negreiros 07 November 2012 (has links)
Novas interfaces homem-computador têm sido pesquisadas a fim de se tornarem mais naturais e flexíveis. O rastreamento labial, foco deste trabalho, é parte deste contexto, podendo ser utilizado na detecção de emoções, bem como no auxílio ao reconhecimento de voz. Pode assim tornar-se um módulo inicial para a leitura labial, na criação de interfaces voltadas a deficientes auditivos. Os algoritmos disponíveis na literatura foram analisados e comparados, mostrando os prós e contras de cada método. Finalmente foi escolhido desenvolver uma técnica baseada em Active Appearance Model (AAM). O AAM gera um modelo a partir de um conjunto de imagens de treinamento, que pode ser utilizado no rastreamento labial de novas imagens. A técnica proposta baseia-se no uso de algoritmos genéticos para o ajuste do modelo, diferente, portanto, da técnica proposta originalmente pelo AAM. A convergência da técnica proposta foi extensivamente analisada, com a variação de parâmetros, buscando a análise de erro residual da função custo e sua relação com o tempo de convergência e erro de posição. / New human-computer interfaces have been researched to make them more natural and flexible. The lip tracking, emphasis of this work, is part of this setting it can be used for detecting emotions and to aid the speech recognition. It may well become an initial module for lip-reading, in the creation of interfaces directed to hearing impaired people. Algorithms available on literature are analyzed and compared, explaining the upsides and downsides of each method. Finally was chose to develop a technique based on Active Appearance Model (AAM). The AAM generates a model from a set of training images, which can be used in tracking of new lip images. The proposed technique is based on the use of genetic algorithms for fitting the model, different therefore of the technique originally proposed by AAM. The convergence of the proposed technique has been extensively analyzed with the variation of parameters, searching the error analysis of the cost function residual error and its relation to the execution time and position error.
8

Sistema de controle por imagem para indivíduos tetraplégicos ou com lesões cerebrais / Control system image for individuals or quadriplegic with brain damage

Gomez, Benigno Alonso 25 April 2007 (has links)
Um dos grandes desafios para a reabilitação de indivíduos que sofreram traumas resultando na sua incapacidade de interação com o ambiente é o desenvolvimento de um sistema que possibilite a esse indivíduo a mínima capacidade de comunicação. Em casos extremos, indivíduos perdem os movimentos dos membros superiores, pescoço e a capacidade de comunicação por voz, ficando praticamente isolados do ambiente. O sistema de controle por imagem proposto é baseada na interpretação de seqüências de imagens que compõem movimento do globo ocular, usando como elemento de controle a região da pupila iluminada por diodos emissores de luz (LED\'s) de infravermelho. A tomada de decisão do sistema para a interpretação do movimento do globo ocular utiliza um controlador baseado em lógica fuzzy, que classifica o movimento do globo ocular em padrões pré-determinados e gera um sinal de controle, que pode ser utilizado para o acionamento de um hardware ou software adicionais, conforme a utilização do sistema proposto. O objetivo do presente trabalho é o desenvolvimento de uma interface homem-máquina de baixo custo, permitindo acesso desses indivíduos ao computador pessoal. / One of the biggest challenges for rehabilitation of people that suffered traumas resulting in environment iterating inabilities is a system development that allows this individuals the minimal communication ability. In extreme circumstances, persons loose superior limbs and neck movements, and also voice communication capacity, staying almost isolated from environment. The proposed image controlled system is based on the interpretation of image sequences that compose the eye movement, using as control element the opening of the pupil illuminated by infra-red light emissor diode (LEDs). The decision-making for the eye movement analysis uses a fuzzy logic controller, that classifies this movement accord to pre-determinated patterns standard and returns a control signal, used for a hardware or software activation. The project goal is the development of a low cost man machine interface, allowing the access for these individuals to a personal computer.
9

Vanité interactive : recherche et expérimentation artistique / Interactive Vanitas : artistic experiment and research

Chanhthaboutdy, Somphout 18 November 2015 (has links)
Ce travail se positionne dans le domaine de l'interactivité sensorielle, de la 3D temps réel et des arts visuels. Cette étude artistique et technique s’inscrit directement dans une recherche entamée depuis des années, sur la question de la représentation sublimée de la mort, qui se retrouve pleinement transfiguré dans l’emblème de la Vanité et sur la recherche de nouvelles façons d’entretenir un dialogue en rétroaction avec l’œuvre. Sur le point artistique, la recherche analyse le processus de création, qui a mené de la représentation sublimée de la mort en vidéo, à la réalisation et l’expérimentation de Vanité au sein de tableaux virtuels interactifs et immersifs. Cette analyse apporte des réponses aux questionnements envers la signification des intentions liées à la création et l’utilisation de Vanité en 3D dans des installations conversationnelles. Elle met en lumière les enjeux de ce procédé innovant par rapport à l’histoire de la Vanité depuis son apparition. Elle en approfondit le contenu en développant une démarche significative, sur la relation entre l’œuvre et le spectateur, par l’utilisation d’interface sensorielle comme support de dialogue. Sur le plan technique, l’étude porte sur l’utilisation d’une interface BCI (Brain computer interface) afin d’apporter une nouvelle façon d’appréhender et de dialoguer avec l’œuvre, dans le cadre d’un processus de rétroaction. Il en émane une interactivité où se mêlent la concentration et la méditation. Par le contrôle des ondes cérébrales et des contractions musculaires, le corps et l’esprit doivent se rejoindre, pour accéder à la maîtrise de l’interface BCI. / This work is about sensory interactivity, real-time 3D and visual arts. This artistic and technical study falls within a long-term research, introducing the notion of an enhanced representation of Death, embodied by the Vanitas and exploring new ways of inducing feedback about a work of art.From an artistic point of view, this research analyses the creation process which led us from the enhanced representation of Death on video, to the experience of the Vanitas through a total immersion into virtual pictures. This analysis brings out the motives for the creation and the use of 3D Vanitases in interactive installations. It highlights the issues raised by this innovative process regarding the History of the Vanitas since its outbreak. It goes further, by developing an original approach, to the communication between the audience and the work of art, introducing the use of a sensorial interface as a medium.At the technical level, the study revolves around the use of a Brain Computer Interface (BCI), inducing a new way of discovering and interacting with a work of art, as part of a feedback process. It creates a sense of interactivity, between concentration and meditation. The control of the brainwaves and muscular contractions brings the Body and the Mind together to achieve the mastery of the BCI
10

Sistema de controle por imagem para indivíduos tetraplégicos ou com lesões cerebrais / Control system image for individuals or quadriplegic with brain damage

Benigno Alonso Gomez 25 April 2007 (has links)
Um dos grandes desafios para a reabilitação de indivíduos que sofreram traumas resultando na sua incapacidade de interação com o ambiente é o desenvolvimento de um sistema que possibilite a esse indivíduo a mínima capacidade de comunicação. Em casos extremos, indivíduos perdem os movimentos dos membros superiores, pescoço e a capacidade de comunicação por voz, ficando praticamente isolados do ambiente. O sistema de controle por imagem proposto é baseada na interpretação de seqüências de imagens que compõem movimento do globo ocular, usando como elemento de controle a região da pupila iluminada por diodos emissores de luz (LED\'s) de infravermelho. A tomada de decisão do sistema para a interpretação do movimento do globo ocular utiliza um controlador baseado em lógica fuzzy, que classifica o movimento do globo ocular em padrões pré-determinados e gera um sinal de controle, que pode ser utilizado para o acionamento de um hardware ou software adicionais, conforme a utilização do sistema proposto. O objetivo do presente trabalho é o desenvolvimento de uma interface homem-máquina de baixo custo, permitindo acesso desses indivíduos ao computador pessoal. / One of the biggest challenges for rehabilitation of people that suffered traumas resulting in environment iterating inabilities is a system development that allows this individuals the minimal communication ability. In extreme circumstances, persons loose superior limbs and neck movements, and also voice communication capacity, staying almost isolated from environment. The proposed image controlled system is based on the interpretation of image sequences that compose the eye movement, using as control element the opening of the pupil illuminated by infra-red light emissor diode (LEDs). The decision-making for the eye movement analysis uses a fuzzy logic controller, that classifies this movement accord to pre-determinated patterns standard and returns a control signal, used for a hardware or software activation. The project goal is the development of a low cost man machine interface, allowing the access for these individuals to a personal computer.

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