• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 3
  • 3
  • 2
  • 1
  • Tagged with
  • 9
  • 9
  • 4
  • 3
  • 3
  • 3
  • 3
  • 3
  • 3
  • 3
  • 2
  • 2
  • 2
  • 2
  • 2
  • 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

Open Hardware - AVR Mikrocontroller

Heik, Andreas 13 March 2008 (has links)
Mikrocontroller erfreuen sich großer Beliebtheit in Elektronik-Bastelprojekte. Unzählige Anschlüsse und Features wie Timer, Counter, AD-Wandler, ... erlauben die Umsetzung komplexer Projekte. Doch wie erfolgt die Programmierung? Der Vortrag gibt einen einführenden Überblick zu AVR Mikrokontrollern, Programmierwerkzeugen und deren Anwendung anhand von Beispielen.
2

Poppy : plate-forme robotique open source, imprimée en 3D et totalement modulaire pour l’experimentation scientifique, artistique et pédagogique / Poppy : open-source, 3D printed and fully-modular robotic platform for science, art and education

Lapeyre, Matthieu 14 November 2015 (has links)
Dans cette thèse, nous proposons de nouvelles approches et processus de conception pour créer et produire des plates-formes robotiques dont le contrôle et la morphologie peuvent être explorés et expérimentés librement dans le monde réel, tout en assurant une dissémination directe dans le milieu académique. Ainsi cette thèse adresse deux questions fondamentales dans le processus de recherche scientifique en robotique:1. Comment peut on étudier systématiquement et efficacement l’impact des propriétés morphologiques du corps d’un robot humanoïde pour l’acquisition et le contrôle de savoir-faire sensorimoteurs, ainsi que de capacités d’interactions physiques et sociales avec l’humain ?2. Comment peut on produire des contributions scientifiques en robotique qui soient réellement reproductibles et directement réutilisables, tout en exposant les moindres détails des expérimentations ? Ainsi notre approche propose de nouvelles méthodes de conception et de production, et ce, pour tous les aspects technologiques d’un robot (mécanique, actionneur,électronique, logiciels, distribution). En particulier, ces méthodes reposent sur l’impression 3D pour toutes les pièces mécaniques, un environnement Arduino pour l’acquisition des capteurs, une bibliothèque Python appelée pypot pour le contrôle proposant un API intuitive et enfin la distribution de tout notre travail sous des licences open source.En utilisant cette méthodologie, nous avons créé le robot Humanoïde Poppy, un robotlow-cost, entièrement modulaire et imprimé en 3D. Ce robot est diffusé sous licence open source et tous les fichiers sont facilement accessibles sur le dépôt GitHub du projet: https://www.github.com/poppy_project/.Nous expérimentons l’utilisation de ce robot pour plusieurs applications. Tout d’abord, comme un outil scientifique où nous montrons que Poppy peut être facilement et rapidement modifié, que ce soit pour explorer le rôle de la morphologie ou pour être adaptés à différentes configurations expérimentales. Basé sur ce travail, mais d’un autre point de vue, nous étudions aussi l’impact potentiel d’une telle plate-forme pour des applications éducatives et artistiques. / This thesis suggests novel approaches and design processes to create and produce robotic platforms, the control and morphology of which can be freely explored through experimentation in the real world, that are easy to diffuse and reproduce in the research community. Especially, this alternative design methodology is driven by the desire to:• freely explore morphological properties,• reduce the amount of time required between an idea and its experimentation on an actual robotic platform in the real world,• makes experiments that should be easy to do, actually easy to do,• make the work easily reproducible in any other lab,• keep the work modular and free to use in accordance with open source principles,so it can be reused and extended for other projects.Our approach follows novel design methods for both design and production, for all technological aspects of the robot (i.e. mechanics, actuation, electronics, software,distribution). In particular these methods relies on 3D printing for all mechanical parts, the Arduino electronic architecture for the sensors acquisition, an easy to use Python API called pypot for the control and finally the distribution of all our work under open source licenses. Using this methodology, we create the Poppy Humanoid robot, a fully modular robot allowing exploring freely the role of morphology and adapting its body to specific experimental setup. This robot has been released under open source license and all files are easily accessible on the GitHub repository: https://www.github.com/poppy_project/. We experiment the use of this robot for several applications. First, as a scientific tool and we show that Poppy can be easily and quickly modified to either explore the role of morphology or to be adapted to different experimental setups. Based on this work, but from another perspective we investigate the potential impact of such platform for educational and artistic applications.
3

Open Hardware - AVR Mikrocontroller

Heik, Andreas 13 March 2008 (has links)
Mikrocontroller erfreuen sich großer Beliebtheit in Elektronik-Bastelprojekte. Unzählige Anschlüsse und Features wie Timer, Counter, AD-Wandler, ... erlauben die Umsetzung komplexer Projekte. Doch wie erfolgt die Programmierung? Der Vortrag gibt einen einführenden Überblick zu AVR Mikrokontrollern, Programmierwerkzeugen und deren Anwendung anhand von Beispielen.
4

UMA ARQUITETURA DE SENSORIAMENTO REMOTO SENSÍVEL AO CONTEXTO PARA IRRIGAÇÃO / A CONTEXT-AWARE REMOTE SENSING ARCHITECTURE FOR IRRIGATION

Boufleuer, Rafael 07 August 2015 (has links)
Considering that irrigation occupies the major percentage of consumed water in agriculture and that Brazil intends to expand considerably its irrigated area in the coming decades, there is a growing need in improving the irrigation water management, mostly in regions with limited availability of water or occurrences of hydric deficiency periods. Therefore, the increase of technologies for performing irrigation using environmental information is becoming important because they enable the maximization of water and energy consumption, maintaining or even improving the yield and quality of agricultural production. This work proposes a context-aware remote sensing architecture for irrigation and its contributions are: (a) the development of two prototypes of a moisture and precipitation meter based on the proposed architecture using open hardware technologies; (b) the development of a context taxonomy that defines the types of information that can be used in the prototype s architecture; and (c) a comparison between two different types of soil moisture sensors. For the validation of the architecture, two case studies were realized to verify the correct functioning of the architecture components, as well as a data collection was performed to make the comparison between a resistive low-cost sensor produced at the Federal University of Santa Maria, and a high-accuracy and high-cost frequency domain reflectometry (FDR) sensor (CS616 - Campbell Scientific, United States). The results obtained from the analyzed data were satisfactory, where it was verified that the architecture is viable, meeting the requirements to which it has proposed. In addition, the comparison performed showed a determination coefficient of up to 95 % between the low-cost resistive soil moisture sensors and the soil moisture sensors CS616 of Campbell R . / Considerando que a irrigação ocupa a maior porcentagem da água consumida na agricultura, e que o Brasil pretende expandir consideravelmente a sua área irrigada nas próximas décadas, há uma crescente necessidade de melhorar o manejo da água de irrigação, principalmente em regiões com reduzida disponibilidade de água ou ocorrência de períodos de deficiência hídrica. Por isso, o incremento de tecnologias na realização da irrigação utilizando-se de informações referentes ao ambiente, estão tornando-se importantes por permitirem a maximização do uso da água e energia, mantendo, ou mesmo melhorando, o rendimento e a qualidade da produção agrícola. Este trabalho propõe uma arquitetura de sensoriamento remoto sensível ao contexto para irrigação, e suas contribuições são: (a) o desenvolvimento de dois protótipos de um medidor de umidade e pluviometria baseados na arquitetura proposta utilizando tecnologias open hardware; (b) o desenvolvimento de uma taxonomia de contextos que define os tipos de informações que podem ser utilizadas na arquitetura dos protótipos; e (c) uma comparação entre dois tipos distintos de sensores de umidade do solo. Para a validação da arquitetura, foram realizados dois estudos de caso para verificar o correto funcionamento dos componentes da arquitetura, bem como a coleta de dados para efetuar a comparação entre um sensor resistivo de baixo custo produzido na Universidade Federal de Santa Maria, e um sensor de alta precisão e custo que utiliza a técnica de reflectometria no domínio da frequência (FDR) (CS616 - Campbell Scientific, Estados Unidos). Os resultados obtidos com os dados analisados foram satisfatórios, onde verificou-se que a arquitetura atende aos requisitos aos quais se propôs. Além disso, a comparação realizada apresentou coeficientes de determinação de até 95% entre os sensores resistivos de umidade do solo de baixo custo e os sensores de umidade do solo CS616 da Campbell R .
5

Utilização de hardware livre para implementação de controlador de bombeio centrífugo submerso aplicado em poços produtores de petróleo / Usage of open hardware for implementation of electrical submersible pump controller applied to oil wells

Cunha, Allison Cristian da 28 August 2017 (has links)
Submitted by Vanessa Christiane (referencia@ufersa.edu.br) on 2018-03-28T22:17:06Z No. of bitstreams: 1 AllisonCC_DISSERT.pdf: 23495470 bytes, checksum: 71481acfb5946c94f60433199d92a734 (MD5) / Approved for entry into archive by Vanessa Christiane (referencia@ufersa.edu.br) on 2018-06-18T16:53:38Z (GMT) No. of bitstreams: 1 AllisonCC_DISSERT.pdf: 23495470 bytes, checksum: 71481acfb5946c94f60433199d92a734 (MD5) / Approved for entry into archive by Vanessa Christiane (referencia@ufersa.edu.br) on 2018-06-18T17:02:20Z (GMT) No. of bitstreams: 1 AllisonCC_DISSERT.pdf: 23495470 bytes, checksum: 71481acfb5946c94f60433199d92a734 (MD5) / Made available in DSpace on 2018-06-18T17:02:29Z (GMT). No. of bitstreams: 1 AllisonCC_DISSERT.pdf: 23495470 bytes, checksum: 71481acfb5946c94f60433199d92a734 (MD5) Previous issue date: 2017-08-28 / The reduction of power consumption and operational costs in petroleum industry has become an increasingly concernment in the last years. Due to that the search for new petroleum production methods and the use of process controlling techniques integrated to its artificial lift systems for optimizing that process plays a main role, and the development of well pump controllers is the main study object. The work proposes the implementation of a control system for oil wells equipped with ESP (Electrical Submersible Pumping), having as main methodology the use of the Arduino® Platform. The desired result is the development of a low cost oil pump controller system, with software technology which brings easy configuration and remote operation, and validation of its use in a real oil well. The main goals are the cost reduction through the use of inexpensive hardware, and the the increase of developing speed by migrating to a higher level programming language, both compared to current well pumping controller solutions, based on use of PLC (Programmable Logic Controller). Other than that, the proposal represents a big step for the dissemination of open hardware philosophy for the petroleum production process control, opening doors for incoming implementation of new controllers for other artificial lift methods / A redução de consumo energético e do custo operacional na indústria de petróleo vem se tornando uma preocupação cada vez maior ao longo dos últimos anos. Nesse contexto a busca por novos métodos de produção de petróleo e a utilização de técnicas de controle integradas aos sistemas de elevação artificial para a otimização desse processo exercem um importante papel, e o desenvolvimento de controladores de bombeio é o principal objeto de estudo. O trabalho propõe a implementação de um sistema de controle para poços equipados com BCS (Bombeio Centrífugo Submerso), tendo como metodologia base o uso da plataforma Arduino®. O resultado desejado é o desenvolvimento de um sistema de controle de bombeio de baixo custo, com tecnologia de software que contemple fácil configuração e operação remota, e a validação do seu uso em um poço produtor de petróleo real. Os objetivos principais são a redução de custos através da utilização de hardware mais econômico, e a aceleração do desenvolvimento devida à migração para uma linguagem de programação de mais alto nível, ambos em relação às soluções de controle de bombeio atuais, baseadas no uso de CLP (Controlador Lógico Programável). Além disso, a proposta representa um grande passo para a disseminação do uso da filosofia de hardware livre para controle do processo de produção de petróleo, abrindo portas para a implementação de novos controladores para outros métodos de elevação / 2018-03-28
6

Detecção de falhas em sistema para Ambiente de Vida Assistida

Jesus Junior, Airton Antônio de 09 June 2017 (has links)
Não informado. / Ambiente de Vida Assistida (AVA) é, essencialmente, uma proposta científica e tecnológica que visa auxiliar a manutenção da vida e o bem-estar de pessoas idosas ou com necessidades especiais. Para tanto, utiliza-se um sistema de controle que integra e coordena dispositivos inteligentes: braceletes, roupas, camas, quartos etc., com vistas a ampliar a autonomia dos indivíduos na execução das mais simples atividades diárias bem como prover remotamente serviços de saúde e de assistência social. Como então garantir, neste contexto, que o sistema não esteja interpretando uma situação equivocada da realidade do meio ou do próprio paciente? Ou ainda, como prevenir respostas inadequadas ou omissões irremediáveis? Apenas com o cumprimento eficaz de requisitos qualitativos, tais como técnicas de detecção de erros e tolerância a falhas poder-se-á minimizar tais circunstâncias inaceitáveis para preservação da saúde do indivíduo assistido. Neste diapasão, o presente estudo visa levantar o contexto de identificação de falhas em sistemas distribuídos assíncronos de modo a projetar, desenvolver e, em seguida, avaliar a eficácia do módulo de detecção de erros em sistema para controle de AVA por meio do emprego de tecnologias abertas (open hardware/software). A metodologia empregada para avaliação deste trabalho será a abordagem Goal Question Metric (GQM). Diante dos resultados encontrados identificou-se a necessidade de modificar um algoritmo de detector de erros originalmente proposto para redes móveis auto organizáveis (MANETs) de modo a torná-lo mais apropriado para o contexto de sistema para Ambiente de Vida Assistida.
7

Development of a Microfluidic Platform for Cell-Cell Communication

Watson, Craig 23 May 2022 (has links)
No description available.
8

Promoting and Advancing Hydrogen Fuel Cell Technologies: The Open Fuel Cell Design Platform as an Open Hardware Initiative for Research, Development, and Education

Lutter, Burghard, Kucklick, Leander, Wiedau, Livia, Bartholomaeus, Roland, Muskatewitz, Alexandra, Benz, Cid, Peinecke, Volker, Schredelseker, Theresa 18 November 2024 (has links)
The 'Open Fuel Cell' (OFC) is an open hardware initiative of the Chairs of Energy Technology and Manufacturing Technology at the University of Duisburg-Essen and the Hydrogen and Fuel Cell Center ZBT. We documented the manufacturing of a passive proton-exchange membrane fuel cell (PEMFC) using easily accessible materials and instruments, such as 3D-printers and com-puter numerical control (CNC) milling machines. Materials and construction pro-tocols can be downloaded at https://openfuelcell.org/. The OFC can be operated with a commercially available small hydrogen storage container. While the OFC can be used to operate low power electrical consumers (LED light strips, small fan) the main purpose is to offer a low-cost experimental environment to explore the electrochemical correlations of a PEMFC as well as the engineering involved in the construction and design of such a cell and thereby to spark the fascination for hydrogen technologies. However, we are confronted not just with inquiries from schools but also from universities of applied sciences. Their funding often does not allow to purchase standard fuel cell test rigs and they intend to use the OFC both in research and teaching. We present the OFC as an open science plat-form on which schools, universities, maker spaces and businesses can build upon. We hope to have launched an open hardware system that grows through commu-nity contributions, propelling a fast transition to a carbon-free energy system.
9

1. Open Source Hardware Konferenz 2024: Innovation durch Offenheit

15 November 2024 (has links)
Im Rahmen der T!Raum-Initiative OSHOP lädt die TU Dresden gemeinsam mit der HTW Dresden und dem Fraunhofer-IWU zur ersten Open Source Hardware Konferenz vom 30. September bis 1. Oktober 2024 in Dresden ein. In Kooperation mit sächsischen Unternehmen soll im Projekt Open Source Hardware (OSH) als Innovations- und Transferkonzept erprobt werden, um die Innovationszyklen sächsischer KMU zu beschleunigen und damit deren Innovationskraft auf nationaler und globaler Ebene zu stärken. Während Open Source Software wie Google oder Android bewährt und bekannt ist, wissen die Wenigsten über Open Source Hardware – also offene Hardware z.B. für Maschinen und Anlagen – Bescheid. Dass Open Hardware allerdings ebenfalls großes Potential hat, zeigen Erfolgsgeschichten im 3D-Druck und im Bau von CNC-Fräsen. Insbesondere für KMU ist es lohnenswert, Open Hardware genauer unter die Lupe zu nehmen, da nicht nur Ressourcen eingespart und der Fachkräftemangel minimiert werden, sondern auch Innovationen schneller und effizienter umgesetzt werden können. Die Konferenz bietet die Möglichkeit, einen Einblick in fachliche Aspekte der OSH sowie Open Innovation zu erlangen, Transferprozesse als Wege zur Innovation zu besprechen und die Potentiale des OSH-basierten Transfers als Innovationskatalysator für sächsische Unternehmen zu entdecken. Durch die Einbeziehung diverser Akteure aus Wirtschaft, Gesellschaft und Wissenschaft in den Innovationsprozess und der gemeinsamen Entwicklung von qualitativ hochwertigen Lösungen für verschiedene Anwendungen können neue Produkte und Leistungen schneller und preiswerter entstehen.

Page generated in 0.0818 seconds