Arbetet utvärderar Ikea TRÅDFRI rörelsesensors kommunikationsprotokoll utifrån ett säkerhetsperspektiv. Internet of Things expanderar och i takt med utvecklingen är det viktigt att granska produkter på marknaden för att se hur säkerhet är implementerat. I rapporten utforskas flera olika sätt att utvärdera produkten för att få en god helhetsbild. Detta innefattar metoder kring hur en obehörig kan få tillgång till information genom avlyssning, ifall en obehörig skulle kunna ta över kommunikationen genom att parkoppla till en ljuskälla på ett långt avstånd samt en bedömning av sårbarhetsgrad utifrån Totalförsvarets forskningsinstituts kartläggning. Resultatet påvisar möjligheten att utnyttja enheten genom en sidokanalsattack samt hur parkoppling kan ske på ett längre avstånd än vad som enligt specifikationen ska vara möjligt. / This report evaluates the Ikea TRÅDFRI motion sensor communication protocol from a security point of view. Internet of Things is constantly expanding and with its growth it is important to examine products on the market to see how security is implemented. Different options on ways to evaluate the product is explored in the report. That includes methods of how an unauthorized person could gain access to information through eavesdropping, if they could take over the communication by pairing to a light source from a long distance, and an assessment of the degree of vulnerability by Totalförsvarets forskningsinstitut. The results show that it is possible to exploit the device through a side-channel attack and also how pairing is enabled on a longer distance than what is specified.

Jönköping University Solar Team deltog år 2015 i tävlingen World Solar Challenge som körs vartannat år i Australien. Team från hela världen deltar i denna tävling där de konstruerar solbilar som de sedan tävlar med i ett race på ca 3000 km från Darwin till Adelaide. En solbil är en elbil som även är utrustad med solpaneler för att ge en teoretiskt oändlig körsträcka så länge bilen har tillgång till solenergi. Jönköping University kom på 15 plats i detta race och ville till nästa race förbättra sin konkurrenskraft. Eftersom det var ett race och varje teams mål var att använda sin bil så effektivt som möjligt behövdes ett system för att övervaka och logga batteridata och presentera det för teamet. Det var även fördelaktigt om teamet kunde få någon form av energiprognos för att kunna bestämma vilken hastighet som solbilen bör hålla. Ett system som loggar och överför denna information från solbilen till en följebil utvecklades och utvärderades. Syftet med denna studie var således: Öka Jönköping University Solar Teams konkurrenskraft genom att förse följebilen med ett beslutsstöd som i realtid övervakar och loggar solbilens batterinivå och energiförbrukning. Design Science Research användes som metod för att genomföra detta syfte, vilket gav möjligheten att utveckla systemet som en artefakt och använda denna för att presentera resultatet. Tre olika experiment utfördes för att konstatera funktionaliten på den trådlösa kommunikationen, hur rättvisande systemet var samt hur väl energiförbrukningen kunde förutsägas. I resultatet beskrivs hela artefakten och tillsammans med experimenten konstaterades att systemet kommer att ge Jönköping University Solar Team en högre konkurrenskraft i nästa race. / Jönköping University Solar Team participated in the 2015 edition of World Solar Challenge, which is held every other year in Australia. Teams from all around the world participates in the competition in which they construct a solar car and competes in a 3000 km long race from Darwin to Adelaide. A solar car is an electric car equipped with solar panels to give it a theoretical infinite mileage as long as the car have access to solar energy. Jönköping University came in 15th place in this race and would like to improve their competitiveness in the next race. Because it is a competition and the goal for every team is to use their car as efficiently as possible a system to log and monitor the battery and present the information to the team was needed. It would also be good to have some kind of energy consumption forecast that would be used to decide the speed the solar car should keep. A system that collect, stores and transmits the information from the solar car to an escort vehicle was developed and evaluated. Thus, the pursues of this studies were: Improve Jönköping University Solar Teams competitiveness by provide a decision support which in real time monitor and log the solar car battery level and energy consumption. Design Science Research was used as a method to realize this purpose, which gave the opportunity to develop the system as an artifact and use this to present the result. Three different experiments were constructed to determine the functionality of the wireless communication, how accurate the system was and how well the energy consumption could be predicted. In the results the artifact is described as a whole and together with the experiments it is found that the system will give Jönköping University Solar Team a higher competitiveness in the next race.

Le concept de pair à pair (P2P) a connu récemment de grands développements dans les domaines du partage de fichiers, du streaming vidéo et des bases de données distribuées. Le développement du concept de parallélisme dans les architectures de microprocesseurs et les avancées en matière de réseaux à haut débit permettent d'envisager de nouvelles applications telles que le calcul intensif distribué. Cependant, la mise en oeuvre de ce nouveau type d'application sur des réseaux P2P pose de nombreux défis comme l'hétérogénéité des machines, le passage à l'échelle et la robustesse. Par ailleurs, les protocoles de transport existants comme TCP et UDP ne sont pas bien adaptés à ce nouveau type d'application. Ce mémoire de thèse a pour objectif de présenter un environnement décentralisé pour la mise en oeuvre de calculs intensifs sur des réseaux pair à pair. Nous nous intéressons à des applications dans les domaines de la simulation numérique et de l'optimisation qui font appel à des modèles de type parallélisme de tâches et qui sont résolues au moyen d'algorithmes itératifs distribués or parallèles. Contrairement aux solutions existantes, notre environnement permet des communications directes et fréquentes entre les pairs. L'environnement est conçu à partir d'un protocole de communication auto-adaptatif qui peut se reconfigurer en adoptant le mode de communication le plus approprié entre les pairs en fonction de choix algorithmiques relevant de la couche application ou d'éléments de contexte comme la topologie au niveau de la couche réseau. Nous présentons et analysons des résultats expérimentaux obtenus sur diverses plateformes comme GRID'5000 et PlanetLab pour le problème de l'obstacle et des problèmes non linéaires de flots dans les réseaux. / The concept of peer-to-peer (P2P) has known great developments these years in the domains of file sharing, video streaming or distributed databases. Recent advances in microprocessors architecture and networks permit one to consider new applications like distributed high performance computing. However, the implementation of this new type of application on P2P networks gives raise to numerous challenges like heterogeneity, scalability and robustness. In addition, existing transport protocols like TCP and UDP are not well suited to this new type of application. This thesis aims at designing a decentralized and robust environment for the implementation of high performance computing applications on peer-to-peer networks. We are interested in applications in the domains of numerical simulation and optimization that rely on tasks parallel models and that are solved via parallel or distributed iterative algorithms. Unlike existing solutions, our environment allows frequent direct communications between peers. The environment is based on a self adaptive communication protocol that can reconfigure itself dynamically by choosing the most appropriate communication mode between any peers according to decisions concerning algorithmic choice made at the application level or elements of context at transport level, like topology. We present and analyze computational results obtained on several testeds like GRID’5000 and PlanetLab for the obstacle problem and nonlinear network flow problems.

Orientador: Jozué Vieira Filho / Banca: Carlos Antonio Alves / Banca: Tony Inácio da Silva / Resumo: A automação de esteiras rolantes é algo comum e importante em sistemas industriais, mas problemas práticos ainda representam desafios. Um dos desses desafios é manter a precisão em sistemas que exigem paradas sistemáticas, pois folgas mecânicas tendem a provocar variações nas posições de paradas ao longo do tempo. A aplicação de motores de indução têm se tornado comum e soluções eficientes e de baixo custo têm sido pesquisadas. Neste trabalho foi desenvolvido e implementado um sistema de controle de posição e velocidade aplicado em esteiras transportadoras utilizando inversor de frequência, microcontrolador, encoder óptico incremental e sensor indutivo. O movimento da esteira transportadora é efetuado por um motor de indução trifásico, que é acionado pelo conjunto microcontrolador - inversor de frequência. Este conjunto impõe uma frequência no estator do motor através de uma troca de mensagens entre microcontrolador e inversor de frequência (Sistema Mestre-Escravo). Para o envio e recebimento das mensagens, utilizou-se o protocolo de comunicação serial USS® (Universal Serial Interface Protocol) através do padrão RS-485. Os controles de posição e velocidade de rotação do eixo do motor fundamentam-se no sinal gerado pelo encoder óptico incremental, responsável por informar a posição do eixo do motor ao longo da trajetória, e no sensor indutivo que determina uma referência externa importante para a esteira transportadora. Para o funcionamento automático da esteira, elaborou-se um software em linguagem de programação C. Como resultado obteve-se um sistema de controle de posição e velocidade do eixo do motor de indução trifásico que apresenta bons resultados / Abstract: Automated conveyors system have been largely used in industrial applications. However, there are still practical issues to be overcome. One of them is due to the system mechanical limitation which can lead to low accuracy for applications based on "stop-and-go" movements. Induction motors have been largely used in such applications and low costs solutions have been searched. In this work it was developed and implemented a system of positioning and velocity control applied to conveyors which is based on frequency inverter, microcontroller, optical incremental encoder and inductive sensor. The conveyor's movement is made by means of a three-phase induction motor, which is driven by the couple microcontroller-frequency inverter. There are messages exchange between the microcontroller and the frequency inverter (Master - Slave configuration) which is based on the communication serial protocol USS through the RS-485 standard. The position and velocity of the motor spindle are controlled using an optical incremental encoder, which is responsible to provide the position of the trajectory, and an inductive sensor which determines the initial reference to the conveyor. The software used to control the system was developed in C language. The results show a low cost system with good results / Mestre

Digitaliseringens utveckling genomsyrar stora delar av samhället där informationsteknologi bidragit till tidigare otänkbara möjligheter och fördelar. I dagsläget har organisationer rationaliserat flertalet affärsprocesser där teknologin anses utgöra en fundamental utgångspunkt. Informationsteknologins framfart medför förändringar kring kommunikation där begreppet interoperabilitet introduceras som: samverkan mellan två eller fler system med motivet att utbyta information. Vidare har cirkulär ekonomi erhållit mer uppmärksamhet under senare år där motivet är att förbättra problematiken kring resurshantering och återvinning. Den här studien syftar till att skapa grunden för utformningen av ett informationssystem med stöd av ett interoperabilitetsramverk där motivet är att understödja verksamheter vid sambokningstransporter. Det här har genomförts med hjälp av en kvalitativ forskningsansats där intervjuer har nyttjats som datainsamlingsmetod där studien har avgränsats till mikro-, små- och medelstora organisationer. Dessa är belägna inom en glest befolkad kommun i Sverige där företagsrepresentanter från Orust kommun bidragit med empirisk data. / The evolution of digitization permeates large parts of society where information technology has contributed to previously unthinkable possibilities and benefits. At present, organizations have rationalized most business processes where technology is considered to be a fundamental starting point. The advancement of information technology brings about changes in communication where the concept of interoperability is introduced as: collaboration between two or more systems with the purpose of exchanging information. In addition, circular economics have gained more attention in recent years, the purpose of which is to improve the problem of resource management and recycling. This study aims to provide the basis for the design of an information system, supported by an interoperability framework, with the purpose of supporting co-transport activities. This has been done using a qualitative research effort where interviews have been used as a data collection method in which the study has been delimited to micro, small and medium-sized organizations. These are located within a sparsely populated municipality in Sweden, where business representatives from Orust Municipality contributed empirical data.

L’Internet des objets amène des contraintes uniques et une immense variété d’applications. Ceci oblige à être capable d’établir des communications efficaces en énergie (et néanmoins à faible délai) au sein de réseaux fortement dynamiques. Nous nous sommes concentrés sur l'amélioration du contrôle d'accès au medium (MAC), afin d’optimiser la gestion des communications sans fils,principale source de consommation d'énergie dans ces réseaux. Cette thèse discute de l’auto adaptation de solutions MAC asynchrones et montre qu’une coopération localisée entre objets communicants permet de maintenir un partage efficace de la ressource de communication face à une forte dynamique (trafic, mobilité, pannes). Outre une réflexion menée sur les outils de simulation et d'expérimentation, nous avons conduit des campagnes d'évaluations complètes de nos contributions qui traitent tant des changements de trafic que de la mobilité dans les réseaux très denses. / The Internet of Things brings unique constraints and a huge variety of applications. This forces to be able to establish energy efficient communications (and never the less low-delay) within highly dynamic networks. We focused on improving the medium access control (MAC) to optimize the management of wireless communications, the main source of energy consumption in these networks. This thesis discusses the self-adaptation of asynchronous MAC solutions and shows that a localized cooperation between communicating objects can maintain an efficient sharing of the communication resource in highly dynamic networks (traffic, mobility, failures). In addition to a reasoning on the tools of simulation and experimentation, we conducted comprehensive evaluation campaigns of our contributions that address traffic changes and mobility in dense networks.

This work describes the process of the design of a flight software for a space-qualified device, outlines the development and testing of the SW, and provides a description of the final product. The flight software described in this work has been developed for the project Demise Observation Capsule (DOC). DOC is a device planned to be attached to an upper stage of a launch vehicle and observe its demise during atmospheric re-entry at the end of its mission. Due to constraint on communication time during the mission and the need to maximize the amount of transferred data, a custom communication protocol has been developed. / Demise Observation Capsule

Orientador: Aílton Akira Shinoda / Resumo: Bastidores eletrônicos de alta performance e disponibilidade utilizam o protocolo Intelligent Platform Management Interface (IPMI) para gerenciar seus dispositivos, controlando e monitorando os recursos disponíveis. Neste contexto para inserir dispositivos com tecnologia mais avançada, novos projetos foram elaborados para atualização dos sistemas de hardware e software baseados em System-on-Chip (SoC), principalmente na área de Física de Alta Energia. Uma aplicação existente, desenvolvida na parceira São Paulo Research and Analysis Center – Fermi National Accelerator Laboratory (SPRACE–FERMILAB) na colaboração internacional do Compact Muon Solenoid detector/Large Hadron Collider/European Organization for Nuclear Research (CMS/LHC/CERN), utiliza o protocolo IPMI implementado em um microcontrolador, contudo, para o processo de atualização vigente, há um interesse desta implementação em SoC. Assim, esta pesquisa foi desenvolvida como o estudo da viabilidade da implementação IPMI em um SoC. Para estabelecer e verificar o protocolo IPMI via barramento I²C, a plataforma Xilinx ZC702 Evaluation Board foi utilizada com os respectivos dispositivos SoC Zynq e Erasable Programmable Memory (EEPROM). Além disso foi desenvolvido uma estrutura simples do IPMI no sistema operacional em tempo real (FreeRTOS) baseados em modelos de hardware e software criados na plataforma Xilinx IDE e SDK. Por meio dos resultados apresentados é possível constatar a viabilidade da implementação IPMI em sistema... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: High performance and availability electronic racks use the Intelligent Platform Management Interface (IPMI) protocol to manage your devices by controlling and monitoring available resources. In this context to insert devices with more advanced technology, new projects were elaborated to update the System-on-Chip (SoC) based hardware and software systems, mainly in the area of High Energy Physics. An existing application developed at the São Paulo Research and Analysis Center partner - Fermi National Accelerator Laboratory (SPRACE – FERMILAB) in the international collaboration of the Compact Muon Solenoid detector/Large Hadron Collider/European Organization for Nuclear Research (CMS/LHC/CERN) uses The IPMI protocol implemented in a microcontroller, however, for the current update process, there is an interest of this implementation in SoC. Thus, this research was developed as the study of the viability of implementing IPMI in a SoC. To establish and verify the IPMI protocol via I²C bus, the Xilinx ZC702 Evaluation Board platform was used with the respective SoC Zynq and Erasable Programmable Memory (EEPROM) devices. In addition, a simple IPMI framework in the real time operating system (FreeRTOS) based on hardware and software models created on the Xilinx IDE and SDK platform was developed. From the results presented, it is possible to verify the viability of IPMI implementation in systems such as SoC Zynq as platform management controller, which allows migration and further t... (Complete abstract click electronic access below) / Mestre

This master thesis deals with data processing from an online diagnostic system. The theoretical part of the work is divided into three chapters, the first deals with technical diagnostics as such, there are basic terminology and concepts associated with technical diagnostics, such as diagnostic methods, tools, models and signals. The second part is focused on diagnostic systems and their division. This chapter also provides some examples of online diagnostic monitoring systems from three different companies. The last chapter of the theoretical part is devoted to the description of the possibilities of data collection from diagnostic systems, ie. description of communication buses and protocols. The practical part of this work focuses on creating an application for data collection and visualization.

This thesis describes the design of a modem for a communication over residential power lines. First part is focused on the history, suitable frequency bands, modulation techniques and mainly on the selection of the optimal modem device. Second section contains the description of the hardware design of the modem itself and clarifies the implementation of the PLC module to be used as a communication interface for a full residential automation solution. Last chapters of this thesis introduce the communication protocol, design of the software for the ATmega32 MCU and present of the final field testing under real conditions.