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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.
121

Diseño, especificación, implementación y validación de habilitadores digitales para la interoperabilidad de plataformas de Internet de las cosas (IoT)

González Usach, Régel 28 March 2022 (has links)
[ES] Internet de las Cosas (IoT) es un paradigma tecnológico que está transformando y revolucionando el mundo en el cual vivimos, liderando la transformación digital y generando enormes posibilidades desde el punto de vista tecnológico que pueden solucionar grandes problemas y retos en nuestra sociedad y efectuar cambios profundos en nuestra economía e industria, y transformar nuestra vida cotidiana . Sin embargo, para poder obtener estos grandes beneficios y explotar todo su potencial todavía hace falta abordar y resolver grandes retos tecnológicos asociados. La interoperabilidad es el mayor reto tecnológico del paradigma IoT, conjuntamente con la seguridad, a causa de la vasta heterogeneidad inherente del universo IoT a todos los niveles y la falta de una estandarización global aceptada de facto capaz de alinear sus diferentes elementos y aspectos, que actualmente no se considera viable conseguir. La capacidad de elementos y sistemas de comunicarse y compartir información de manera efectiva entre ellos habilita intercambios de información relevante, coordinación o cooperación entre sí y sinergias. La fragmentación de la información de sistemas IoT y falta inherente de interoperabilidad en este paradigma causa graves problemas económicos y tecnológicos, e impide las sinergias entre sistemas. Se considera que la carencia de interoperabilidad es el mayor obstáculo para la formación de un ecosistema global de IoT, un hito en la transformación digital, puesto que impide la integración horizontal de mercados verticales y deja una gran fragmentación entre los sistemas basados en información obtenida con la tecnología IoT. IoT, uno de los paradigmas o habilitadores clave de la transformación digital, está enormemente limitada por carencias de interoperabilidad, que impiden su crecimiento, evolución y despliegue de todo su potencial. Es absolutamente crítico resolver el problema de falta intrínseca de interoperabilidad entre plataformas IoT para poder avanzar tecnológicamente hacia el Internet del Futuro, la Nueva Generación de IoT y la digitalización del mundo. La habilitación de la interoperabilidad entre sistemas y a lo largo de los sistemas, para conseguir un ecosistema interconexionado global, es un reto complejo y de múltiples facetas. Entre ellas, la interoperabilidad semántica, que implica el entendimiento completo, automático y sin ambigüedades de la información compartida entre sistemas, es singularmente compleja de obtener entre plataformas IoT a causa de la alta heterogeneidad entre sus modelos de información. En esta tesis se abarca el estudio, diseño, especificación, implementación y validación de habilitadores digitales (herramientas tecnológicas que promueven la digitalización del mundo) para establecer interoperabilidad en IoT en diferentes niveles (técnico, sintáctico, semántico) con especial enfoque en la interoperabilidad semántica entre plataformas heterogéneas, uno de los retos técnicos más complejos actualmente en IoT. También se abordan en el estudio y construcción de estos habilitadores temas a resolver de Internet del Futuro y la Nueva Generación de Internet de las Cosas. / [CA] Internet de les Coses (IoT) és un paradigma tecnològic que està transformant i revolucionant el món en el qual vivim, liderant la transformació digital i generant enormes possibilitats des del punt de vista tecnològic que poden solucionar grans problemes i reptes en la nostra societat i efectuar canvis profunds en la nostra economia i indústria, i transformar la nostra vida quotidiana. No obstant això, per a poder obtindre aquests grans beneficis i explotar tot el seu potencial encara fa falta abordar i resoldre grans reptes tecnològics associats. La interoperabilitat és el major repte tecnològic del paradigma IoT, conjuntament amb la seguretat, a causa de la vasta heterogeneïtat inherent de l'univers IoT a tots els nivells i la falta d'una estandardització global acceptada de facto capaç d'alinear els seus diferents elements i aspectes, que actualment no es considera viable aconseguir. La capacitat d'elements i sistemes de comunicar-se i compartir informació de manera efectiva entre ells habilita intercanvis d'informació rellevant, coordinació o cooperació entre si i sinergies. La fragmentació de la informació de sistemes IoT i falta inherent d'interoperabilitat en aquest paradigma causa greus problemes econòmics i tecnològics, i impedeix les sinergies entre sistemes. Es considera que la manca d'interoperabilitat és el major obstacle per a la formació d'un ecosistema global de IoT, una fita en la transformació digital, ja que impedeix la integració horitzontal de mercats verticals i deixa una gran fragmentació entre els sistemes basats en informació obtinguda amb la tecnologia IoT. La IoT, un dels paradigmes o habilitadors clau de la transformació digital, està enormement limitada per manques d'interoperabilitat, que impedeixen el seu creixement, evolució i desplegament de tot el seu potencial. És absolutament crític resoldre el problema de falta intrínseca d'interoperabilitat entre plataformes IoT per a poder avançar tecnològicament cap a la Internet del Futur, la Nova Generació de IoT i la digitalització del món. L'habilitació de la interoperabilitat entre sistemes i al llarg dels sistemes, per a aconseguir un ecosistema interconnectat global, és un repte complex i de múltiples facetes. Entre elles, la interoperabilitat semàntica, que implica l'enteniment complet, automàtic i sense ambigüitats de la informació compartida entre sistemes, és singularment complexa d'obtindre entre plataformes IoT a causa de l'alta heterogeneïtat entre els seus models d'informació. En aquesta tesi s'abasta l'estudi, disseny, especificació, implementació i validació d'habilitadors digitals (eines tecnològiques que promouen la digitalització del món) per a establir interoperabilitat en IoT en diferents nivells (tècnic, sintàctic, semàntic) amb especial enfocament en la interoperabilitat semàntica entre plataformes heterogènies, un dels reptes tècnics més complexos actualment en IoT. També s'aborden en l'estudi i construcció d'aquests habilitadors temes a resoldre d'Internet del Futur i la Nova Generació d'Internet de les Coses. / [EN] The Internet of Things (IoT) is a technological paradigm that is transforming and revolutionising the world we live in, leading the digital transformation and generating enormous technological possibilities that could solve major challenges in our society, effect profound changes in our economy and industry and transform our daily lives. However, in order to realise these great benefits and exploit IoT's full potential, there are major associated technological challenges to be addressed and solved. Interoperability is the biggest technological challenge of the IoT paradigm, together with security, because of the vast inherent heterogeneity in IoT at all levels and the lack of a de facto global standard capable of aligning its different elements and aspects, which is currently not considered feasible to achieve. The ability of elements and systems to communicate and share information effectively with each other enables exchanges of relevant information, coordination or cooperation with each other and synergies. The fragmentation of information in IoT systems and inherent lack of interoperability in this paradigm causes serious economic and technological problems, and prevents synergies between systems. The lack of interoperability is considered to be the biggest obstacle to the formation of a global IoT ecosystem, a milestone in the digital transformation, as it prevents horizontal integration of vertical markets and leaves a large fragmentation between systems based on IoT-derived information. IoT, one of the key paradigms or enablers of digital transformation, is severely constrained by interoperability gaps, which impede its growth, evolution and deployment of its full potential. It is absolutely critical to solve the problem of intrinsic lack of interoperability between IoT platforms in order to move technologically towards the Future Internet, the Next Generation IoT and the digitisation of the world. The enablement of interoperability between and across systems to achieve a globally interconnected ecosystem is a complex and multi-faceted challenge. Among them, semantic interoperability, which implies an automatic unambiguous understanding of the information shared between systems, is hardly feasible between IoT platforms due to the high heterogeneity of information models. This thesis covers the study, design, specification, implementation and validation of digital enablers to establish IoT interoperability at different levels (technical, syntactic, semantic) with special focus on semantic interoperability between heterogeneous platforms, one of the most complex technical challenges currently in IoT. The study and construction of these enablers also address issues to solve in the Future Internet and the Next Generation of the Internet of Things. / González Usach, R. (2022). Diseño, especificación, implementación y validación de habilitadores digitales para la interoperabilidad de plataformas de Internet de las cosas (IoT) [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/181643
122

Propuesta de uso del paradigma de coreografía de procesos para crear sistemas de eSalud en entornos heterogéneos

Bayo Montón, José Luis 18 April 2023 (has links)
[ES] Los sistemas de salud actuales están viendo cómo la cantidad de pacientes a atender y de servicios diferentes que han de prestar, es cada vez mayor, por lo que se cuestiona si serán sostenibles a largo plazo. Uno de los factores importantes de este aumento es el envejecimiento de la población, lo que implica un mayor número de pacientes crónicos y de personas dependientes. Al mismo tiempo, se genera la necesidad de abordar soluciones de prevención sobre la población general. Para hacer frente a estos problemas, se está recurriendo a la aplicación de las TIC en el ámbito de la salud, son los llamados sistemas de eSalud. En el desarrollo de sistemas de eSalud es necesario tener en cuenta que deben trabajar en entornos altamente heterogéneos y cambiantes. Además, han de ser capaces de adaptarse a las nuevas necesidades demandadas por la población, todo ello sin reducir la calidad de los servicios ya prestados y sin disparar los costes del sistema. Al desarrollar un sistema software, el modelo de arquitectura elegido marca qué características se van a potenciar. El paradigma de Arquitectura Orientada a Servicios (SOA) presenta entre sus principales beneficios una alta flexibilidad, reducción de costes y desarrollo rápido, así como permite la escalabilidad de sistemas. Por lo que puede ser un buen candidato a la hora de crear sistemas de eSalud. Existen diferentes formas de construir una arquitectura SOA, atendiendo a cómo se componen sus servicios y a cómo se aplican las directrices SOA. En esta tesis se propone el uso del paradigma de coreografía de procesos, siendo éste un modelo en el que se busca construir la arquitectura del sistema desde el punto de vista de los procesos de negocio de la organización. Este paradigma trabaja desde el concepto de un proceso único definido de forma distribuida, empleando coreografía de servicios para la composición. Es decir, no existe un elemento que centralice la toma de decisiones, donde cada servicio es consciente de qué debe realizar y cómo interactuar con el resto. En la coreografía de procesos se prioriza la eficiencia del sistema, aumentando el acoplamiento entre servicios, lo que puede reducir la flexibilidad del sistema SOA. Pero genera un sistema con mayor rendimiento y con una mejor alineación con los procesos de negocio. Además, la coreografía es más robusta que otros mecanismos de composición y ayuda con la integración de sistemas entre empresas. El objetivo de esta tesis es validar si el paradigma de coreografía de procesos es aplicable al desarrollo de sistemas de eSalud. Para ello se ha realizado la aplicación de este paradigma en tres escenarios de eSalud diferentes. En el primero de los escenarios, se creó un sistema para integrar y evaluar un dispositivo tecnológico puntero, las Google Glass. Esto demostró que se puede crear un sistema de eSalud basado en coreografía de procesos que integre dispositivos tecnológicos complejos. En el segundo de los escenarios, se validó el paradigma en un entorno real, creando un sistema distribuido de ejecución de modelos híbridos para la predicción y detección de diabetes tipo 2. El sistema permitió construir servicios para la ejecución de los modelos híbridos, integrando motores estadísticos externos y sistemas de terceros de acceso a datos clínicos. De esta forma se validó que la coreografía de procesos ayuda a la integración con sistemas externos, permitiendo un desarrollo rápido y la creación de sistemas distribuidos. En el tercero de los escenarios, se aplica el paradigma orientado al modelo de IoT integrando sensores portables para crear un sistema de eSalud. El sistema desarrollado integra un kit de sensores de eSalud para el seguimiento y monitorización remota de pacientes, comparando su rendimiento en un ordenador y en una Raspberry Pi. El resultado refrenda la hipótesis de que la coreografía de procesos permite aplicarse para crear fácilmente sistemas de eSalud orientados a IoT e integrar sensores portables de este ámbito. / [CA] Els sistemes de salut actuals estan veient com la quantitat de pacients a atendre i de servicis diferents que han de prestar, és cada vegada major, per la qual cosa es qüestiona si seran sostenibles a llarg termini. Un dels factors importants d'aquest augment és l'envelliment de la població, la qual cosa implica un major nombre de pacients crònics i de persones dependents. Al mateix temps, es genera la necessitat d'abordar solucions de prevenció sobre la població general. Per a fer front a aquests problemes, s'està recorrent a l'aplicació de les TIC en l'àmbit de la salut, són els cridats sistemes d'eSalut. En el desenvolupament de sistemes d'eSalut és necessari tindre en compte que han de treballar en entorns altament heterogenis i canviants. A més, han de ser capaços d'adaptar-se a les noves necessitats demandades per la població, tot això sense reduir la qualitat dels servicis ja prestats i sense disparar els costos del sistema. En desenvolupar un sistema programari, el model d'arquitectura triat marca quines característiques es potenciaran. El paradigma d'Arquitectura Orientada a Servicis (SOA) presenta entre els seus principals beneficis una alta flexibilitat, reducció de costos i desenrotllament ràpid, així com permet l'escalabilitat de sistemes. Pel que pot ser un bon candidat a l'hora de crear sistemes d'eSalut. Hi ha diferents formes de construir una arquitectura SOA, atenent a com es componen els seus servicis i a com s'apliquen les directrius SOA. En esta tesi es proposa l'ús del paradigma de coreografia de processos, sent aquest un model en el qual es busca construir l'arquitectura del sistema des del punt de vista dels processos de negoci de l'organització. Este paradigma treballa des del concepte d'un procés únic definit de forma distribuïda, emprant coreografia de servicis per a la composició. És a dir, no hi ha un element que centralitze la presa de decisions, on cada servici és conscient de què ha de realitzar i com interactuar amb la resta. En la coreografia de processos es prioritza l'eficiència del sistema, augmentant l'adaptament entre servicis, la qual cosa pot reduir la flexibilitat del sistema SOA. Però genera un sistema amb major rendiment i amb una millor alineació amb els processos de negoci. A més, la coreografia és més robusta que altres mecanismes de composició i ajuda amb la integració de sistemes entre empreses. L'objectiu d'aquesta tesi és validar si el paradigma de coreografia de processos és aplicable al desenrotllament de sistemes d'eSalut. Per a això s'ha realitzat l'aplicació d'aquest paradigma en tres escenaris d'eSalut diferents. En el primer dels escenaris, es va crear un sistema per a integrar i avaluar un dispositiu tecnològic punter, les Google Glass. Açò va demostrar que es pot crear un sistema d'eSalut basat en coreografia de processos que integre dispositius tecnològics complexos. En el segon dels escenaris, es va validar el paradigma en un entorn real, creant un sistema distribuït d'execució de models híbrids per a la predicció i detecció de diabetis tipus 2. El sistema va permetre construir servicis per a l'execució dels models híbrids, integrant motors estadístics externs i sistemes de tercers d'accés a dades clíniques. D'aquesta manera es va validar que la coreografia de processos ajuda amb la integració amb sistemes externs, permetent un desenrotllament ràpid i la creació de sistemes distribuïts. En el tercer dels escenaris, s'aplica el paradigma orientat al model d'IoT integrant sensors portables per a crear un sistema d'eSalut. El sistema desenrotllat integra un kit de sensors d'eSalut per al seguiment i monitorització remota de pacients, comparant el seu rendiment en un ordinador i en una Raspberry Pi. El resultat referenda la hipòtesi que la coreografia de processos permet aplicar-se per a crear fàcilment sistemes d'eSalut orientats a IoT i integrar sensors portables d'este àmbit. / [EN] Today's health systems are seeing an increasing number of patients to be cared for, as well as different services to be provided, raising questions as to whether they will be sustainable in the long term. One of the critical factors in this increase is the ageing of the population, which implies a more significant number of chronic patients and dependents. At the same time, there is a need to address prevention solutions in the general population. To address these problems, the application of ICTs in the health field, the so-called eHealth systems, is being used. In the development of eHealth systems, it is necessary to consider that they have to work in highly heterogeneous and changing environments. Moreover, they must be able to adapt to the new needs demanded by the population, without reducing the quality of the services already provided and without increasing the costs of the system. When developing a software system, the architecture model chosen determines which characteristics are to be enhanced. The Service Oriented Architecture (SOA) paradigm has among its main benefits high flexibility, cost reduction and rapid development, as well as allowing the scalability of systems. Therefore, it can be a good candidate when creating eHealth systems. There are different ways to build an SOA architecture, depending on how its services are composed and how SOA guidelines are applied. This thesis proposes the use of the process choreography paradigm, which is a model that seeks to build the architecture of the system from the point of view of the organisation's business processes. This paradigm works from the concept of a single process defined in a distributed way, using service choreography for the composition. In other words, there is no centralised decision-making element, where each service is aware of what it must do and how to interact with the rest. Process choreography prioritises system efficiency by increasing coupling between services, which can reduce the flexibility of the SOA system. But it generates a system with higher performance and better alignment with business processes. In addition, choreography is more robust than other composition mechanisms and helps with cross-company system integration. The aim of this thesis is to validate whether the process choreography paradigm is applicable to the development of eHealth systems. To this end, the application of this paradigm has been carried out in three different eHealth scenarios. In the first scenario, a system was created to integrate and evaluate a cutting-edge technological device, Google Glass. This demonstrated that it is possible to create an eHealth system based on process choreography that integrates complex technological devices. In the second scenario, the paradigm was validated in a real environment, creating a distributed hybrid model execution system for the prediction and detection of type 2 diabetes. The system allowed building services for hybrid model execution, integrating external statistical engines and third-party services to access clinical data. This scenario validated that the process choreography aids integration with external systems, enabling rapid development and the creation of distributed systems. In the third scenario, the paradigm is applied to the IoT model by integrating wearable sensors to create an eHealth system. The developed system integrates an eHealth sensor kit for remote patient tracking and monitoring, comparing its performance on a computer and a Raspberry Pi. The result supports the hypothesis that process choreography can be applied to easily create IoT-oriented eHealth systems and integrate IoT wearable sensors. / Bayo Montón, JL. (2023). Propuesta de uso del paradigma de coreografía de procesos para crear sistemas de eSalud en entornos heterogéneos [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/192822
123

Optimering av underhållssystem för luftkvalitet i Hamreskolan / Optimization of the maintenance system for air quality in Hamreskolan

Askar, Maryam, Svärdelid Fichera, Davide January 2022 (has links)
Teknik och fastighetsförvaltningen är en förvaltning inom Västerås stad som ansvarar för byggandet av Västerås stad. Förvaltningen är intresserad av att få en bredare kunskap om optimering av underhållssystem för luftkvalitet och hur det skulle leda till energibesparing. Uppkomsten till deras intresse för om optimering av underhållssystem för luftkvalitet och energibesparing, är av anledning att de söker nya innovativa möjligheter att optimera luftkvalitet inom deras befintliga och nya fastigheter inom Västerås stads kommun. Projektgruppen samt teknik och fastighetsförvaltningen valde att lägga fokus på Hamreskolan där de i dagsläget har ett gediget underhållssystem för luftkvaliteten men har en önskan till förbättring. Skälet är deras upplevelse av luftkvalitet som inte är optimal, upplevelsen är att man känner sig trött, att det är kallt och kvavt ibland även för varmt inne i lokalerna. Bra luftkvalite är väsentligt för det påverkar både personalen och eleverna prestationsförmåga prioriterades detta. Målet med detta examensarbete är att presentera förbättringsförslag för att optimera underhållssystemet i Hamreskolan. Underhållssystemet innefattar ventilationssystemet och styrsystemet där dess syfte är att underhålla luftkvaliteten. De metoder som användes för framtagandet av förbättrings förslagen är djup litteraturstudie, platsbesök i Hamreskolan, brainstorming med förvaltare från Teknik och fastighetsförvaltningen samt pugh matris för validering av förbättrings förslagen. I detta examensarbete presenteras och diskuteras de förbättringsförslag som kommer medföra positiva effekter för Hamreskolan vid implementation. Dessa förbättringsförslag behövs inte nödvändigtvist begränsas till endast implementation vid Hamreskolan, det går även att implementera vid flera fastigheter inom Västerås stad, Teknik och fastighetsförvaltning. Vid utvecklande av förbättringsförslagen har realitet för funktionalitet och dess effekt vid implementation i Hamreskolan varit i åtanken. / Technology and property management is an administration within the city of Västerås that is responsible for the construction of the city of Västerås. The administration is interested in gaining a broader knowledge of optimizing maintenance systems for air quality and how it would lead to energy savings. The emergence of their interest in optimizing maintenance systems for air quality and energy savings, is due to seeking new innovative opportunities to optimize air quality within their existing and new properties within the City of Västerås. The project group as well as technology and property management chose to focus on Hamreskolan, where they currently have a solid maintenance system for air quality but have a desire for improvement. The reason is their experience of air quality which is not optimal, the experience is that you feel tired, that it is cold and sometimes even too hot inside the premises. Good air quality is essential because it affects both the staff and the student's performance priorities. The aim of this thesis is to present improvement proposals to optimize the maintenance system in Hamreskolan. The maintenance system includes the ventilation system and the control system where its purpose is to maintain the air quality. The methods used for the preparation of improvement proposals are in-depth literature study, site visits to Hamreskolan, brainstorming with managers from Technology and Property Management and a pugh matrix for validation of improvement proposals. In this thesis, the improvement proposals that will have positive effects for Hamreskolan upon implementation are presented and discussed. These improvement proposals do not necessarily have to be limited to only implementation at Hamreskolan, it is also possible to implement at several properties within the City of Västerås, Technology and property management. In developing the improvement proposals, the reality for functionality and its effect when implemented in Hamreskolan has been in mind.
124

Inter-device authentication protocol for the Internet of Things

Wilson, Preethy 18 May 2017 (has links)
The Internet of things (IoT) recently blossomed remarkably and has been transforming the everyday physical entities around us into an ecosystem of information that will enrich our lives in unimaginable ways. Authentication is one of the primary goals of security in the IoT and acts as the main gateway to a secure system which transmits confidential and/or private data.This thesis focuses on a Device-to-Device Mutual Authentication Protocol, designed for the smart home network, which is an essential component of communication in the Internet of Things(IoT). The protocol has been developed based on asymmetric cryptography to authenticate the devices in the network and for the devices to agree on a shared secret session key. In order to ensure the security of a communications session between the devices, the session keys are changed frequently - ideally after every communication session. The proposed scheme has been programmed in HLPSL, simulated and its efficiency verified using the SPAN/ AVISPA tool. When SPAN substantiates the protocol simulation and the attacker simulation, the back-ends of the AVISPA tool verifies the safety and security of the proposed authentication protocol. The thesis also evaluates the protocol's security against the attacks successful against protocols proposed by other researchers. / Graduate / 0544 / 0984 / 0537 / pwilson1@uvic.ca
125

[en] THE INTERNET OF THINGS: PRIVACY AND ETHICS IN THE AGE OF HYPERCONNECTIVITY / [pt] A INTERNET DAS COISAS: PRIVACIDADE E ÉTICA NA ERA DA HIPERCONECTIVIDADE

EDUARDO JOSE GUEDES MAGRANI 18 February 2019 (has links)
[pt] A interação contínua entre dispositivos inteligentes, sensores e pessoas aponta para o número crescente de dados que estão sendo produzidos, armazenados e processados, alterando, sob diversos aspectos e de forma crescente, nosso cotidiano. Por um lado, o contexto de hiperconectividade pode trazer benefícios econômicos ao Estado, a empresas, bem como comodidade aos consumidores. Por outro, a crescente conectividade traz desafios significativos nas esferas de proteção da privacidade e à ética contemporânea, impactando, em última instância, a própria democracia. Este trabalho aborda, principalmente sob o ponto de vista regulatório, alguns destes desafios enfrentados pelo atual Estado de direito decorrentes do avanço do cenário denominado de Internet das Coisas. / [en] The continuous interaction between intelligent devices, sensors and people points to the increasing number of data being produced, stored and processed, changing, in various aspects and increasingly, our daily life. On one hand, the context of hyperconnectivity can bring economic benefits to the State, companies, as well as convenience to consumers. On the other hand, increasing connectivity brings significant challenges in the spheres of privacy protection and contemporary ethics, impacting, ultimately, democracy itself. This thesis addresses, from the regulatory point of view, some of these challenges faced by the current rule of law arising from the advance of the scenario called Internet of Things.
126

Smartcom: uma arquitetura inteligente de gerenciamento de consumo de energia para smart home

OLIVEIRA, Edvar da Luz 25 August 2017 (has links)
Submitted by Carmen Torres (carmensct@globo.com) on 2018-02-05T16:59:06Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_SmartcomArquiteturaInteligente.pdf: 6115605 bytes, checksum: e7635deb3e7a4d4e713eb377b019ecb4 (MD5) / Approved for entry into archive by Edisangela Bastos (edisangela@ufpa.br) on 2018-02-16T12:43:40Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_SmartcomArquiteturaInteligente.pdf: 6115605 bytes, checksum: e7635deb3e7a4d4e713eb377b019ecb4 (MD5) / Made available in DSpace on 2018-02-16T12:43:40Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_SmartcomArquiteturaInteligente.pdf: 6115605 bytes, checksum: e7635deb3e7a4d4e713eb377b019ecb4 (MD5) Previous issue date: 2017-08-25 / CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / CNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico / Com os avanços na tecnologia da informação para diversas áreas, como saúe bem-estar, as soluções baseadas em Smart Home que usam as tecnologidaes Internet of Things (IoT) vem ganhando maior repercussão, inclusive como alternativas de economia de energia com base em Sistemas de Gerenciamento de Energia Domiciliar (SGED). Esta tese define uma arquitetura inovadora, denominada de SmartCoM, que é implementada para monitorar e gerenciar habitações residenciais usando tecnologias IoT. Tal estratégia envolve a definição dos parâmetros que podem efetivar a interoperabilidade entre medição, gerenciamento e as camadas de comunicação de dados, que são os recursos necessários para que os dispositivos de hardware possam realizar o monitoramento e medição pretendidos. Além disso, uma interface é definida por uma camada de middleware para integrar o gerenciamento de instalações externas e a visualização de dados por meio de um serviço em nuvem. A arquitetura SmartCoM é definida de maneira fim-a-fim, em detalhes do ponto de vista do consumidor e as estratégias de otimização s.o empregadas tanto para o cliente final quanto para a concessionária de energia. A fim de avaliar a arquitetura proposta, foi elaborado um estudo de caso, a partir do qual, observa-se a viabilidade do desenvolvimento de soluções para Smart Home de acordo com os requisitos descritos na SmartCoM. / With advances in information technology for a variety of areas, such as health and wellness, Smart Home based solutions using Internet of Things (IoT) technologies are gaining in popularity, including energy-saving alternatives based on Home Energy Management Systems (HEMS). This thesis defines an innovative architecture, called SmartCoM, which is implemented to monitor and manage residences using IoT technologies. Such a strategy involves defining the parameters that can affect the interoperability between measurement, management and the layers of data communication, which are the resources necessary for the hardware devices to perform the intended monitoring and measurement. In addition, an interface is defined by a middleware layer to integrate the management of external installations and the visualization of data through cloud services. The SmartCoM architecture is defined end-to-end in detail from the consumer's point of view and optimization strategies are employed for both the end customer and the utility. In order to evaluate the proposed architecture, a case study was elaborated, from which the viability of developing solutions for Smart Home according to the requirements described in SmartCoM is observed.
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Estratégias de planejamento para otimização do consumo residencial de energia elétrica: uma abordagem baseada em smart home e sistemas fuzzy

ANDRADE, Sérgio Henrique Monte Santo 04 August 2017 (has links)
Submitted by Carmen Torres (carmensct@globo.com) on 2018-02-06T17:40:24Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_EstrategiasPlanejamentoOtimizacao.pdf: 6363892 bytes, checksum: 54af44d2043efdd661b641b9c67e1d29 (MD5) / Approved for entry into archive by Edisangela Bastos (edisangela@ufpa.br) on 2018-02-16T13:09:13Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_EstrategiasPlanejamentoOtimizacao.pdf: 6363892 bytes, checksum: 54af44d2043efdd661b641b9c67e1d29 (MD5) / Made available in DSpace on 2018-02-16T13:09:13Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_EstrategiasPlanejamentoOtimizacao.pdf: 6363892 bytes, checksum: 54af44d2043efdd661b641b9c67e1d29 (MD5) Previous issue date: 2017-08-04 / O consumo energético residencial vem crescendo de forma contínua ao longo das últimas décadas, em contrapartida, o fornecimento de energia elétrica não acompanha a mesma taxa de crescimento, tornando-se uma dificuldade a ser tratada pelas empresas do setor elétrico, aos consumidores e ao próprio meio ambiente. Os sistemas de distribuição existentes não são suficientes e possuem limitações no fornecimento de informação adequada, em tempo real, sobre o consumo e outras variáveis elétricas. Também não estão preparados para lidar com custos da energia variáveis, num contexto de um mercado que tende a estabelecer preços dinâmicos, que dependem de um conjunto de fatores endógenos e exógenos ao setor elétrico. Nesse contexto, este trabalho tem como objetivo a proposição, implementação e teste de um sistema de monitoramento inteligente, via smartphone, para controle de energia, utilizando-se formas inteligentes de tomada de decisão, com o intuito de fornecer ao usuário formas de manter seu consumo energético, a partir de perfis de consumo, dentro dos padrões de consumo pré-definidos e desejados pelo usuário. Como consequências positivas, ter-se-á a redução da demanda energética, por meio dos perfis de consumo que levam em consideração o grau de dependência do indivíduo em relação aos equipamentos elétricos presente na residência, apresentando um menor impacto no bem-estar e no dia a dia do usuário final do sistema. / Residential energy consumption has grown steadily over the last decades, becoming a problem for companies in the electricity sector, for consumers and for the environment. The traditional measurement systems are not sufficient and have limitations in providing adequate real-time information about consumption. As also, they are not prepared to deal with variable energy costs in the context of a market with dynamic prices that depend on the energy mix. The future of electric grid, called Smart Grid, will not only be designed with measurements based on the residences, but also on the individualized equipment consumption level. From the residential side, consumers generally suffer from a lack of information on the specific equipment energy consumption impact and, consequently, on the required behavior to reduce its consumption. In this context, this work aims on a smartphone monitoring system concept, to control energy using fuzzy logic, in order to provide to the user ways to maintain his energy consumption, through consumption profiles, within the user-defined consumption patterns. The energy reduction demand through the consumption profiles working with habitant dependence degree on the electrical equipment present in the residence, promote a smaller impact on inhabitant well-being and the daily life.
128

Towards interoperability, self-management, and scalability for scalability for machine-to-machine systems / Vers l'interopérabilité, l'autogestion, et la scalabilité des systèmes Machine-to-Machine

Ben Alaya, Mahdi 06 July 2015 (has links)
La communication Machine-to-Machine (M2M) est l'un des principaux fondements de l'Internet des Objets (IoT). C'est un phénomène qui a évolué discrètement au cours du temps et vient d’émerger à la surface pour do! nner naissance à une explosion de nouveaux usages et services. Capteurs, actionneurs, tags, véhicules et objets intelligents ont tous la possibilité de communiquer. Le nombre de connexions M2M est en constante augmentation et il est prévu de voir des milliards d’objets connectés dans un futur proche. Les applications M2M offrent des avantages dans divers domaines à savoir les villes intelligentes, les voitures connectées, les usines du futures, l’agriculture de précision, l’environnement, la santé, etc. La croissance rapide de cet écosystème est entrain de conduire le M2M vers un avenir prometteur. Cependant, les opportunités d'expansion des marchés M2M ne sont pas évidentes. En effet, un ensemble de challenges doivent être surmontés afin de permettre un déploiement à grande échelle dans des domaines diverses et variés à savoir les défis d’interopérabilité, de complexité et de scalabilité. Actuellement, le marché du M2M souffre d'une fragmentation verticale importante touchant la majorité des domaines industriels. En effet, diverses solutions propriétaires ont été conçues pour répondre à des applications spécifiques engendrant ainsi un sérieux problème d''interopérabilité. Pour adresser ce challenge, nous avons conçu, développer et expérimenté la plateforme OM2M offrant une architecture opérationnelle, flexible et extensible pour l'interopérabilité M2M conforme à la norme SmartM2M. Pour supporter les environnements contraints, nous avons proposé une nouvelle convention de nommage basée sur une structure de ressources non-hiérarchique permettant d’optimiser la taille des messages échangés. Pour assurer l’interopérabilité sémantique entre les applications et les machines, nous avons proposé l'ontologie IoT-O. Cette dernière est composée de cinq modèles de base représentant les capteurs, les actionneurs, les observations, les actuations et les web ! services pour permettre de converger rapidement vers un vocabulaire commun pour l'IoT. Une plateforme M2M horizontale permet d'interconnecter des machines hétérogènes largement distribués et qui évoluent fréquemment en fonction des changements de l’environnement. Maintenir ces systèmes complexes en vie est coûteux en termes de temps et d'argent. Pour adresser ce challenge, nous avons conçu, développé et intégré le framework FRAMESELF afin d'ajouter des capacités d'autogestion aux systèmes M2M basées sur le paradigme de l'informatique autonome. En étendant le modèle d'architecture de référence MAPE-K, notre solution permet d'adapter dynamiquement le comportement de la plateforme OM2M par en fonctions des changements du contexte et des politiques haut niveaux. Nous avons défini un ensemble de règles sémantiques pour faire du raisonnement sur l'ontologie IoT-O en tant que modèle de connaissance. Notre objectif est de permettre la découverte automatique entre les machines et les applications à travers un appariement sémantique et une reconfiguration dynam! ique de l'architecture des ressources. L’interopérabilité et l’autogestion ouvrent la voie à un déploiement de masse des systèmes M2M. Par contre, ces derniers se basent sur l'infrastructure actuelle d'internet qui n'a jamais été conçu pour ce genre de d'utilisation ce qui pose de nouvelles exigences en termes de scalabilité. Pour adresser ce challenge, nous avons conçu, simulé et validé l'approche OSCL proposant une nouvelle topologie de réseau maillé M2M comme alternative à l'approche centralisée actuelle. OSCL s'appuie sur les techniques de routage centrées sur l'information favorisant les communications à sauts multiples et un cache distribué pour une meilleure dissémination des données. Nous avons développé le simulateur OSCLsim pour valider l'approche proposée.[...] / Machine-to-Machine (M2M) is one of the main features of Internet of Things (IoT). It is a phenomenon that has been proceeding quietly in the background, and it is coming into the surface, where explosion of usage scenarios in businesses will happen. Sensors, actuators, tags, vehicles, and intelligent things all have the ability to communicate. The number of M2M connections is continuously increasing, and it has been predicted to see billions of machines interconnected in a near future. M2M applications provide advantages in various domains from smart cities, factories of the future, connected cars, home automation, e-health to precision agriculture. This fast-growing ecosystem is leading M2M towards a promising future. However, M2M market expansion opportunities are not straightforward. A set of challenges should be overcome to enable M2M mass-scale deployment across various industries including interoperability, complexity, and scalability issues. Currently, the M2M market is suffering from a high vertical fragmentation affecting the majority of business sectors. In fact, various vendor-specific M2M solutions have been designed independently for specific applications, which led to serious interoperability issues. To address this challenge, we designed, implemented, and experimented with the OM2M platform offering a flexible and extensible operational architecture for M2M interoperability compliant with the SmartM2M standard. To support constrained environments, we proposed an efficient naming convention relying on a non-hierarchical resource structure to reduce the payload size. To reduce the semantic gap between applications and machines, we proposed the IoT-O ontology for an effective semantic interoperability. IoT-O consists of five main parts, which are sensor, actuator, observation, actuation and service models and aims to quickly converge to a common IoT vocabulary. An interoperable M2M service platform enables one to interconnect heterogeneous devices that are widely distributed and frequently evolving according to their environment changes. Keeping M2M systems alive is costly in terms of time and money. To address this challenge, we designed, implemented, and integrated the FRAMESELF framework to retrofit self-management capabilities in M2M systems based on the autonomic computing paradigm. Extending the MAPE-K reference architecture model, FRAMESELF enables one to dynamically adapt the OM2M system behavior according to high level policies how the environment changes. We defined a set of semantic rules for reasoning about the IoT-O ontology as a knowledge model. Our goal is to enable automatic discovery of machines and applications through dynamic reconfiguration of resource architectures. Interoperability and self-management pave the way to mass-scale deployment of M2M devices. However, current M2M systems rely on current internet infrastructure, which was never designed to address such requirements, thus raising new requirements in term of scalability. To address this challenge, we designed, simulated and validated the OSCL overlay approach, a new M2M meshed network topology as an alternative to the current centralized approach. OSCL relies on the Named Data Networking (NDN) technique and supports multi-hop communication and distributed caching 5 to optimize networking and enhance data dissemination. We developed the OSCLsim simulator to validate the proposed approach. Finally, a theoretical model based on random graphs is formulated to describe the evolution and robustness of the proposed system.
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消費者使用物聯網產品之動機與選擇—以智慧家庭產品為例 / User’s motivation and choice of using IoT products: A case of smart home

黃曉菁, Huang, Xiao Jing Unknown Date (has links)
近年來以物聯網為概念的相關應用已經成為最熱門的議題之一,各國家與企業皆致力於發展其技術以及相關應用。而物聯網的應用範圍十分廣泛,舉凡交通、醫療、電力、物流、家居等都是其應用的範圍。亞洲國家於近十年來也紛紛提出相關發展計畫,由此可看出各國對發展物聯網產品之野心與競爭。而台灣政府於2008年開始積極推展智慧家庭政策,端看目前成果,以技術層面而言並非無法達成,但在實際應用與推廣上明顯仍有許多不足之處。因此本研究欲探討使用者對於物聯網相關應用產品的使用動機為何,以智慧家庭為例,先進行相關文獻探討,並以修正式德菲法做為發展ANP專家問卷的基礎,再利用ANP法施行專家問卷,排序出影響消費者使用動機的各項權重,選擇出最符合消費者需求的產品組合,讓開發者能了解在開發與推展智慧家庭相關應用時,應滿足消費者哪些心理層面之動機因素,提升未來發展相關產品時的成功機率。 / In recent years, applications related to the concept of IoT become one of the most popular issues all over the world. Countries and enterprises devote themselves to developing the technique and application related to IoT. The range of its applications is very wide, including transportation, medical treatment, electricity, logistics, and home, etc. Asian countries set forth some development projects in the past decade, demonstrating the ambition and competition between countries in developing IoT products. Taiwan has started to push the development of smart home related applications since 2008. After development for some years, insufficiency in actual implementation and diffusion remains given our technological advantage. Therefore, this research intends to study the motivation for users to use IoT products taking smart home as an example. First, we study the related literature review and use modified Delphi method to develop the ANP expert questionnaires. Then, we prioritize the weights of consumer’s motives. The result can enable developers of smart home products to understand what kind of consumer motives they should satisfy when developing and promoting smart home applications. This enhances the probability of success for developing related products in the future.
130

Energy-efficient interfaces for vibration energy harvesting

Du, Sijun January 2018 (has links)
Ultra low power wireless sensors and sensor systems are of increasing interest in a variety of applications ranging from structural health monitoring to industrial process control. Electrochemical batteries have thus far remained the primary energy sources for such systems despite the finite associated lifetimes imposed due to limitations associated with energy density. However, certain applications (such as implantable biomedical electronic devices and tire pressure sensors) require the operation of sensors and sensor systems over significant periods of time, where battery usage may be impractical and add cost due to the requirement for periodic re-charging and/or replacement. In order to address this challenge and extend the operational lifetime of wireless sensors, there has been an emerging research interest on harvesting ambient vibration energy. Vibration energy harvesting is a technology that generates electrical energy from ambient kinetic energy. Despite numerous research publications in this field over the past decade, low power density and variable ambient conditions remain as the key limitations of vibration energy harvesting. In terms of the piezoelectric transducers, the open-circuit voltage is usually low, which limits its power while extracted by a full-bridge rectifier. In terms of the interface circuits, most reported circuits are limited by the power efficiency, suitability to real-world vibration conditions and system volume due to large off-chip components required. The research reported in this thesis is focused on increasing power output of piezoelectric transducers and power extraction efficiency of interface circuits. There are five main chapters describing two new design topologies of piezoelectric transducers and three novel active interface circuits implemented with CMOS technology. In order to improve the power output of a piezoelectric transducer, a series connection configuration scheme is proposed, which splits the electrode of a harvester into multiple equal regions connected in series to inherently increase the open-circuit voltage generated by the harvester. This topology passively increases the rectified power while using a full-bridge rectifier. While most of piezoelectric transducers are designed with piezoelectric layers fully covered by electrodes, this thesis proposes a new electrode design topology, which maximizes the raw AC output power of a piezoelectric harvester by finding an optimal electrode coverage. In order to extract power from a piezoelectric harvester, three active interface circuits are proposed in this thesis. The first one improves the conventional SSHI (synchronized switch harvesting on inductor) by employing a startup circuitry to enable the system to start operating under much lower vibration excitation levels. The second one dynamically configures the connection of the two regions of a piezoelectric transducer to increase the operational range and output power under a variety of excitation levels. The third one is a novel SSH architecture which employs capacitors instead of inductors to perform synchronous voltage flip. This new architecture is named as SSHC (synchronized switch harvesting on capacitors) to distinguish from SSHI rectifiers and indicate its inductorless architecture.

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