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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

Desenvolvimento de sistema automatizado de monitoramento de ambientes de produção animal, utilizando uma rede de sensores sem fio / Development of an automated system for monitoring animal production environments, using wireless sensor networks

Oliveira, Marcelo Eduardo de 26 January 2016 (has links)
As redes de sensores sem fio, aplicadas à automação do controle de ambientes representam um paradigma emergente da computação, onde múltiplos nós providos de sensores, sistemas computacionais autônomos e capacidade de comunicação sem fio, conformam uma rede cuja topologia altamente dinâmica permite adquirir informações sobre sistemas complexos sendo monitorados. Um dos fatores essenciais para obter um ganho na produtividade avícola é o controle da ambiência animal. Atualmente os métodos utilizados para o monitoramento e controle ambiental não podem considerar a grande quantidade de microambientes internos nos ambientes de produção animal e também requerem infraestruturas cabeadas complexas. Dentro desse contexto o objetivo deste trabalho foi desenvolver e testar um sistema automatizado de controle ambiental, através da utilização de sensores sem fio, que auxilie e proporcione maior segurança no controle de ambientes automatizados. O sistema monitora variáveis que influenciam na produtividade de aves, tais como temperatura e umidade e outras variáveis físico-químicas do aviário. A infraestrutura desenvolvida foi testada em um aviário experimental e resultou em um sistema seguro e com grande escalabilidade, que é capaz de controlar e monitorar o ambiente e ainda coletar e gravar dados. Foi utilizado o protocolo ZigBee® para gerenciar o fluxo de dados do sistema. Foram feitas análises da eficiência de comunicação do sistema no aviário, monitorando os pacotes de dados perdidos. Os testes demonstraram uma perda de dados de aproximadamente 2% dos pacotes enviados, demonstrando a eficiência das redes ZigBee® para gerenciar o fluxo de dados no interior do aviário. Desta forma, pode-se concluir que é possível e viável a implantação de uma rede ZigBee®, para automatizar ambientes de produção animal com coleta de dados em tempo real, utilizando um sistema integrado via internet, que compreende: instrumentação eletrônica, comunicação sem fio e engenharia de software\". / Wireless sensor networks, applied to automation environments control represent an emerging computing paradigm where multiple nodes equipped with sensors, autonomous computing systems and wireless communication capability, make up a network with a highly dynamic topology allows acquiring information systems complex being monitored. One of the key factors for a gain in the poultry productivity is the control of animal ambience. Currently the methods used for environmental monitoring and control may pass large amount of internal microenvironments in animal production environments and also require complex wired infrastructure. In this context the aim of this study was to develop and test an automated environmental control through the use of wireless sensors that assist and provide greater security in the control of automated environments. The system monitors variables that influence the productivity of birds, such as temperature, humidity and other physical and chemical variables of the aviary. The developed infrastructure was tested in an experimental avian and resulted in a secure and highly scalable system, which is able to control and monitor the environment and still collect and record data. The ZigBee® protocol was used to manage the system data flow. Communication efficiency analyzes were made in the aviary, monitoring the lost data packets. Tests have shown a data loss of around 2% of the packets sent demonstrating the efficiency of ZigBee® networks to manage the data flow within an avian. Thus, one can conclude that it is possible and feasible the implementation of a ZigBee® network to automate animal production environment with real-time data collection using an integrated internet system, comprising: electronic instrumentation, wireless communication and Software Engineering\".
2

Desenvolvimento de sistema automatizado de monitoramento de ambientes de produção animal, utilizando uma rede de sensores sem fio / Development of an automated system for monitoring animal production environments, using wireless sensor networks

Marcelo Eduardo de Oliveira 26 January 2016 (has links)
As redes de sensores sem fio, aplicadas à automação do controle de ambientes representam um paradigma emergente da computação, onde múltiplos nós providos de sensores, sistemas computacionais autônomos e capacidade de comunicação sem fio, conformam uma rede cuja topologia altamente dinâmica permite adquirir informações sobre sistemas complexos sendo monitorados. Um dos fatores essenciais para obter um ganho na produtividade avícola é o controle da ambiência animal. Atualmente os métodos utilizados para o monitoramento e controle ambiental não podem considerar a grande quantidade de microambientes internos nos ambientes de produção animal e também requerem infraestruturas cabeadas complexas. Dentro desse contexto o objetivo deste trabalho foi desenvolver e testar um sistema automatizado de controle ambiental, através da utilização de sensores sem fio, que auxilie e proporcione maior segurança no controle de ambientes automatizados. O sistema monitora variáveis que influenciam na produtividade de aves, tais como temperatura e umidade e outras variáveis físico-químicas do aviário. A infraestrutura desenvolvida foi testada em um aviário experimental e resultou em um sistema seguro e com grande escalabilidade, que é capaz de controlar e monitorar o ambiente e ainda coletar e gravar dados. Foi utilizado o protocolo ZigBee® para gerenciar o fluxo de dados do sistema. Foram feitas análises da eficiência de comunicação do sistema no aviário, monitorando os pacotes de dados perdidos. Os testes demonstraram uma perda de dados de aproximadamente 2% dos pacotes enviados, demonstrando a eficiência das redes ZigBee® para gerenciar o fluxo de dados no interior do aviário. Desta forma, pode-se concluir que é possível e viável a implantação de uma rede ZigBee®, para automatizar ambientes de produção animal com coleta de dados em tempo real, utilizando um sistema integrado via internet, que compreende: instrumentação eletrônica, comunicação sem fio e engenharia de software\". / Wireless sensor networks, applied to automation environments control represent an emerging computing paradigm where multiple nodes equipped with sensors, autonomous computing systems and wireless communication capability, make up a network with a highly dynamic topology allows acquiring information systems complex being monitored. One of the key factors for a gain in the poultry productivity is the control of animal ambience. Currently the methods used for environmental monitoring and control may pass large amount of internal microenvironments in animal production environments and also require complex wired infrastructure. In this context the aim of this study was to develop and test an automated environmental control through the use of wireless sensors that assist and provide greater security in the control of automated environments. The system monitors variables that influence the productivity of birds, such as temperature, humidity and other physical and chemical variables of the aviary. The developed infrastructure was tested in an experimental avian and resulted in a secure and highly scalable system, which is able to control and monitor the environment and still collect and record data. The ZigBee® protocol was used to manage the system data flow. Communication efficiency analyzes were made in the aviary, monitoring the lost data packets. Tests have shown a data loss of around 2% of the packets sent demonstrating the efficiency of ZigBee® networks to manage the data flow within an avian. Thus, one can conclude that it is possible and feasible the implementation of a ZigBee® network to automate animal production environment with real-time data collection using an integrated internet system, comprising: electronic instrumentation, wireless communication and Software Engineering\".
3

Software Development Environment : the DevOps perspective

Christensen, Olga January 2020 (has links)
DevOps is a collaborative effort based on a set of practices and cultural values developed in order to improve software quality and release cycle while operating at the lowest cost possible. To enable DevOps principles such as automation, collaboration, and knowledge sharing, Continuous Delivery and Deployment, as well as Infrastructure as Code are heavily employed throughout the whole process of software development. One of the main building blocks of this process is a development environment where the application code is being developed and tested before it is released into production. This research investigates with the help of a systematic literature review the DevOps perspective regarding provisioning and deployment of a development environment in a controlled, automated way, specifically the benefits and challenges of this process.
4

The Effect of Ergonomics in an Assembly Line System’s Work Environment - A Literature Study

Aroian, Naanar, Awaijan, Kristina January 2022 (has links)
The purpose of this literature study is to explore the most important ergonomic factors that play a role in shaping the work environment of assembly line systems. Since the subject of ergonomics in production systems has continuously gained great interest in the past years, it was decided to conduct research around this topic. The literature study type was chosen to answer the research questions. This was done because even though various articles discuss the mentioned areas, they usually still have a specific focus. For example, human errors, automation, simulation, virtual reality, etc. Therefore, it was decided to carry on with a more comprehensive review that takes into account the most important ergonomic factors in general and how they influence assembly workstations both positively and negatively. Thus, two research questions were explored: Research question:  What are the most important ergonomic factors that influence an assembly line system’s work environment? Sub-research question: What are the positive and negative effects and what causes them? In order to proceed with the study, a systematic literature review and thematic analysis were conducted through the use of secondary data only. This was done by searching for different articles through two academic databases; ScienceDirect and Scopus. Lastly, the words that were used to search for articles were highly relevant in terms of the research questions. In regards to the analysis and conclusion, different factors were found including automation and cobots, job rotation, the implementation of human factors, and repetitive manual tasks. The results showed that all these factors can affect an assembly line system’s work environment to a great extent, both positively and negatively. First of all, cobots contribute by helping human operators with difficult tasks, yet, the collaboration of humans and robots is viewed as risky to some extent. Furthermore, the level of the implementation of ergonomics at workplaces is crucial to provide a healthy work environment. Ultimately, repetitive tasks can have a great impact on workers, and thereby the whole work environment becomes affected. Therefore, convenient training sessions are highly important to ensure safety in such cases.
5

Simulační studie robotické linky pro obsluhu obráběcího stroje a realizaci dokončovacích operací / A simulation study of a robotic cell for production machine operation and realization of finishing operation

Kljajič, Marko January 2020 (has links)
The aim of the thesis is conceptual design of robotic workplace with its subsequent simulation. The current workplace for manufacturing and deburring parts for automotive industry is operated manually. The plan is overall automation and replacement of operators by robots. The thesis deals with the concept of layout of elements in the cell, and the procedure of their selection or design. Process simulation is performed in the Process Simulate software from Siemens. For the purposes of the work is used RCS module, which on the basis of dynamic conditions can calculate the cycle of production very close to the reality. The production cycle is compared to the current workplace. The work also deals with the economic evaluation of the proposed workplace.

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