Дисертації з теми "EMBEDDED SENSOR NETWORKS"
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Singh, Vaneet. "Design of energy efficient embedded controlled sensor networks." Thesis, IIT Delhi, 2015. http://localhost:8080/xmlui/handle/12345678/6917.
Повний текст джерелаTewatia, Rohit. "Security in Distributed Embedded Systems." Thesis, Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-1379.
Повний текст джерелаCommunication in a sensor network needs guaranteed reception of data without fail and providing security to it. The authenticity and confidentiality of the data has to be ensured as sensors have limited hardware resources as well as the bandwidth. This thesis addresses the security aspects in wireless sensor networks. The main task of the project is to identify the critical security parameters for these distributed embedded systems. The sensors have extremely limited resources: small amount of memory, low computation capability and poor bandwidth. For example, a sensor platform can have 8KB of flash memory, a 4MHz 8-bit Atmel processor, and a 900MHz radio interface. Various security threats posed to these small wireless sensor networks has been made and solutions proposed. Secure communication between these communicating partners is to be achieved using cryptography.
Persson, Erik. "Energy Harvesting in Wireless Sensor Networks." Thesis, Uppsala universitet, Signaler och System, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-388006.
Повний текст джерелаDang, Thanh Xuan. "Scalable and Efficient Tasking for Dynamic Sensor Networks." PDXScholar, 2011. https://pdxscholar.library.pdx.edu/open_access_etds/269.
Повний текст джерелаDarr, Matthew J. "Advanced embedded systems and sensor networks for animal environment monitoring." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1196199349.
Повний текст джерелаSorenson, Carl E., Stanton K. Yarbrough, Lawrence C. Freudinger, and Philip T. Gonia. "RESEARCH ENVIRONMENT FOR VEHICLE EMBEDDED ANALYSIS ON LINUX." International Foundation for Telemetering, 2003. http://hdl.handle.net/10150/605588.
Повний текст джерелаThis paper overviews the Research Environment for Vehicle-Embedded Analysis on Linux (REVEAL), which is an open standards framework for the creation and deployment of realtime embedded and network distributed data systems. REVEAL is an ongoing project at NASA Dryden to evaluate the feasibility and benefits of using Linux in a modern generic web-enabled data system for measurement and telemetry network research, by actually building such a system. Novel features are described, such as XML based self-configuring, self-verifying and self-documenting software, and automatic XML metadata generation. The REVEAL architecture is described, including the core server and scheduler, and the management of system and user job processing. Performance, timing, determinism, and security issues are discussed, as well as the advantages and limitations of Linux.
Sim, Zhi Wei. "Radio frequency energy harvesting for embedded sensor networks in the natural environment." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/radio-frequency-energy-harvesting-for-embedded-sensor-networks-in-the-natural-environment(b0f3db83-8a82-4376-841b-d79bcd0d16ae).html.
Повний текст джерелаKoch, John R. "A hybrid sensor network for watershed monitoring." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2008. http://scholarsmine.mst.edu/thesis/pdf/jrk4y8_09007dcc804f8fe6.pdf.
Повний текст джерелаVita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed May 27, 2008) Includes bibliographical references (p. 84-86).
Huang, Ya-Lin. "Ad hoc distributed simulation: a method for embedded online simulations." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/49060.
Повний текст джерелаWaterman, Jason. "Coordinated Resource Management in Networked Embedded Systems." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10651.
Повний текст джерелаEngineering and Applied Sciences
Dunkels, Adam. "Towards TCP/IP for Wireless Sensor Networks." Licentiate thesis, SICS, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-20989.
Повний текст джерелаContiki
uIP
Naik, Vinayak Shashikant. "Reliable and secure data transport in large scale wireless networks of embedded devices." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1154092710.
Повний текст джерелаDoan, Xuan Tien. "Multivariate data analysis for embedded sensor networks within the perishable goods supply chain." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/multivariate-data-analysis-for-embedded-sensor-networks-within-the-perishable-goods-supply-chain(0b555420-442b-4787-b730-8acf95878996).html.
Повний текст джерелаDunkels, Adam. "Programming Memory-Constrained Networked Embedded Systems. PhD thesis." Doctoral thesis, Västerås : Department of Computer Science and Electronics, Mälardalen University, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-173.
Повний текст джерелаLizarraga, Adrian, and Adrian Lizarraga. "Modeling and Optimization Frameworks for Runtime Adaptable Embedded Systems." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/620835.
Повний текст джерелаMOHD, NOR RIZAL. "OXYBUOY: CONSTRUCTING A REAL-TIME INEXPENSIVE HYPOXIA MONITORING PLATFORM." Kent State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=kent1256325512.
Повний текст джерелаFryman, Joshua Bruce. "SoftCache Architecture." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7205.
Повний текст джерелаStucki, Eric Thomas. "Medium Access Control and Networking Protocols for the Intra-Body Network." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1182.pdf.
Повний текст джерелаDiao, Xunxing. "A resource-aware embedded commucation system for highly dynamic networks." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2011. http://tel.archives-ouvertes.fr/tel-00715649.
Повний текст джерелаLiu, Junbin. "Distributed low-power image processing in wireless sensor networks for intelligent video surveillance applications." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/63311/1/Junbin_Liu_Thesis.pdf.
Повний текст джерелаAllgayer, Rodrigo Schmidt. "Femtonode : arquitetura de nó-sensor reconfigurável e customizável para rede de sensores sem fio." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2009. http://hdl.handle.net/10183/17293.
Повний текст джерелаWith the growth and the development of new applications for Wireless Sensor Networks (WSN), sensors nodes are able to handle more complex events that require higher processing performance and hardware flexibility. These new features are intended to meet the requirements of various applications, as well to provide customized platforms that have only the resources needed to meet these requirements. WSNs often need a flexible architecture able to adapt to design and environment changes. The use of reconfigurable architectures is an alternative to bring more flexibility and more processing capability for the sensor-node. Compared with ASICs (Application Specific Integrated Circuit) architectures, which have a high cost in production setup, reconfigurable architectures enable a reduction in these costs because its architecture is not fixed to a single application. Reconfigurability allows a gain in the project costs and time development, and it enables the development of generic platforms to deal with a greater number of applications. Therefore, the proposal target architecture that aims to provide a flexible and efficient platform that require greater processing capacity which support the development of applications. In this work a reconfigurable and customizable sensor-node called FemtoNode is proposed. The FemtoNode has a reconfigurable platform and a wireless module to support applications for WSNs, using an object-oriented language Java as specification language of its architecture. The proposed concepts were validated with a case study of an heterogeneous wireless sensor composed of sensors nodes with different platforms, whose results are described in this work.
Ouyang, Wenbin. "On-Loom Fabric Defect Inspection Using Contact Image Sensors and Activation Layer Embedded Convolutional Neural Network." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1404537/.
Повний текст джерелаZeitz, Kimberly Ann. "Cybersecurity for the Internet of Things: A Micro Moving Target IPv6 Defense." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/102446.
Повний текст джерелаDoctor of Philosophy
Meghji, Mahir Lumumba. "On a Joint Physical Layer and Medium Access Control Sublayer Design for Efficient Wireless Sensor Networks and Applications." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2013. https://ro.ecu.edu.au/theses/590.
Повний текст джерелаChis, Andreea. "Méthodes et outils pour la compilation et l'optimisation logicielle des systèmes embarqués sans fil dédiés à des applications." Thesis, Lyon, École normale supérieure, 2012. http://www.theses.fr/2012ENSL0708.
Повний текст джерелаWireless Sensor Networks are are highly constrained in resources: computation, memory and energy. In this context, particular attention must be paid when designing applications, communication protocols and operating systems that will run on the sensor nodes. The purpose of this thesis was to adapt the software models conventionally used for programming applications to the field of sensor networks and to propose methods and tools to build a customized version of the software to run on the sensor nodes from a model of the application.One of the components of a micro-sensor that consumes the most energy is its radio interface. The behavior of a MAC layer protocol can be expressed as a timed automaton with fixed states (which correspond to specific states of the physical device) or free states ( the choice for their mapping is left to the programmer). The behavior of a radio device itself can be expressed as an automaton consisting of transitional (with fixed duration) and non-transitional states (with unlimited duration but with a minimum time duration constraint). The problem of mapping a free state of the software of fixed duration on a path of the physical device by minimizing the energy consumed is proven to be NP-complete. A heuristic to map the free states of an automaton corresponding to a software protocol to states or paths between the states of a physical device is proposed. The approach leads to theoretical gains of 60% for the mapping of B-MAC, a MAC layer protocol. For two categories of operating systems dedicated to Wireless Sensor Networks (event model and multi-threaded), code skeletons are generated. The simulations under the Worldsens platform of the multi-threaded code skeleton generated for B-MAC and adapted to Mantis OS confirmed the theoretical gains. Experiments on the real platform SensLab have shown that the optimization in terms of energy does not change the functional performance of the protocol
Cemin, David. "Arquitetura de agentes móveis reconfiguráveis para redes de sensores sem fio." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/75710.
Повний текст джерелаHeterogeneous wireless sensor networks (WSN) can combine static nodes and mobile nodes. Theses mobile nodes may contain a sophisticated hardware when compared to static nodes. Unmanned aircraft vehicles (UAVs) can confer mobility to the sensor node increasing the flexibility of the WSN to where it is inserted. UAVs as well as other common sensor nodes can have a reconfigurable hardware architecture, as, for example, an FPGA and with this achieve a differentiated computational power. WSNs enable a vast and interesting spectrum of possible applications, like aerial surveillance, public security support, among others. The WSNs can be configured by the use of mobile agents, which are capable of migrating among the nodes, carrying the tasks to be executed and that will be instantiated on a given node. In this scenario, this work describes an architecture of reconfigurable agents to wireless sensor networks. The agents can be implemented purely in software or as a hardware agent, depending on the available execution environment and on the chosen design. The proposed architecture presents the necessary transparency to the agent so that the rest of the system is not aware of the nature of the agents that are implemented on the platform. Furthermore, the architecture enables dynamic migration of agents that reconfigure the system in a transparent way as well. In this work, use cases examples that demonstrate the feasibility of using the proposed architecture are shown, as well as the analysis performed on these platforms.
Francillon, Aurélien. "Attacking and Protecting Constrained Embedded Systems from Control Flow Attacks." Phd thesis, Grenoble INPG, 2009. http://tel.archives-ouvertes.fr/tel-00540371.
Повний текст джерелаIqbal, Javed, and Farhan Moughal. "Wireless Sensor Network Setup : Wireless sensor motes embedded programing." Thesis, Halmstad University, Halmstad Embedded and Intelligent Systems Research (EIS), 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-5005.
Повний текст джерелаExploitation of wireless sensor networks (WSNs) in ubiquitous computing environments is continuously increasing for gathering data. Contemporary distributed software systems on WSNs for pragmatic business applications have become extremely adaptive, dynamic, heterogeneous and large scaled. Management of such system is not trivial to fulfil these features, leading to more and more complex management and configuration. Along with encompassing state of art and novel techniques for such diversely dynamic system, in this thesis two alternative techniques namely “task initiation by command” and “run-time task deployment and processing” are compared, for such system’s setup and configuration. Both techniques have their own pros and cons which makes them suitable according to the requirements and contextual situations. A lot of effort has been put to make WSNs more and more efficient in terms of computations and power consumption. Hence comparative analysis of both techniques used in this report to setup and configure WSN can be a benchmark to lead towards most appropriate solution to compensate the need of efficient energy and resource consumption.Both alternative schemes are implemented to setup WSN on Sun Microsystems sunSPOT (Small Programmable Object Technology) sensor nodes which are embedded microcontrollers and programmed them in java (j2me). It performs radio communication between wireless sensors and host via sink node also called base station, along with over the air run-time management of sensors. SunSPOTs built in libraries and KSN libraries are used to implement these alternatives and compare the memory footprint, communication pattern and energy consumption.Exploitation of wireless sensor networks (WSNs) in ubiquitous computing environments is continuously increasing for gathering data. Contemporary distributed software systems on WSNs for pragmatic business applications have become extremely adaptive, dynamic, heterogeneous and large scaled. Management of such system is not trivial to fulfil these features, leading to more and more complex management and configuration. Along with encompassing state of art and novel techniques for such diversely dynamic system, in this thesis two alternative techniques namely “task initiation by command” and “run-time task deployment and processing” are compared, for such system’s setup and configuration. Both techniques have their own pros and cons which makes them suitable according to the requirements and contextual situations. A lot of effort has been put to make WSNs more and more efficient in terms of computations and power consumption. Hence comparative analysis of both techniques used in this report to setup and configure WSN can be a benchmark to lead towards most appropriate solution to compensate the need of efficient energy and resource consumption.Both alternative schemes are implemented to setup WSN on Sun Microsystems sunSPOT (Small Programmable Object Technology) sensor nodes which are embedded microcontrollers and programmed them in java (j2me). It performs radio communication between wireless sensors and host via sink node also called base station, along with over the air run-time management of sensors. SunSPOTs built in libraries and KSN libraries are used to implement these alternatives and compare the memory footprint, communication pattern and energy consumption.
Burbano, Andres. "Système de caméras intelligentes pour l’étude en temps-réel de personnes en mouvement." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS139/document.
Повний текст джерелаWe propose a detection and trackingsystem of people moving in large spacessystem. Our solution is based on a network ofsmart cameras capable of retrievingspatiotemporal information from the observedpeople. These smart cameras are composed bya 3d sensor, an onboard system and acommunication and power supply system. Weexposed the efficacy of the overhead positionto decreasing the occlusion and the scale'svariation.Finally, we carried out a study on the use ofspace, and a global trajectories analysis ofrecovered information by our and otherssystems, able to track people in large andcomplex spaces
Silva, Marcel Salvioni da 1980. "Rede de sensores sem fio de baixo custo para monitoramento ambiental." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259030.
Повний текст джерелаDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação
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Resumo: Existem diversos sistemas e equipamentos, com finalidades específicas, envolvendo o monitoramento das mudanças de clima e de tempo. Entretanto, a maioria desses sistemas e equipamentos disponíveis no mercado possuem alto custo, o que normalmente inviabiliza sua utilização em larga escala. Além disso, a maioria dos sistemas e equipamentos para este fim são importados, o que dificulta ainda mais a sua inserção em aplicações corriqueiras. Este trabalho descreve o desenvolvimento, projeto, testes e aplicação de uma rede de sensores sem fio de baixo custo, para monitoramento em tempo real da temperatura ambiente, umidade relativa do ar e pressão atmosférica, como uma alternativa nacional para pesquisas que necessitem de equipamentos para monitoramento ambiental. A rede é composta de quatro nós sensores e um nó coordenador. Os nós sensores possuem um sensor de temperatura e umidade e um sensor de pressão barométrica ¿ ambos com interface digital ¿ além de um microcontrolador de baixo consumo de energia e baixo custo, e um módulo de comunicação para uma rede operando na frequência de 2,4GHz, para conexão numa rede padrão IEEE 802.15.4. O nó coordenador possui outro módulo de comunicação para a conexão na rede sem fio, um microcontrolador, um cartão de memória para armazenamento das informações de cada nó sensor e interface Ethernet para disponibilizar as medidas do sensor em uma página web, acessada através de um IP estático em um browser de internet comum. Testes em laboratório e em campo atestaram autonomia do nó sensor (em torno de 90 dias para uma bateria de 500mAh) e alcance (de aproximadamente 150m em visada direta) e comprovaram a conformidade dos valores medidos por cada nó, através da comparação com um sistema de referência
Abstract: There are several systems and equipments with specific applications related to climate and weather change monitoring. However, most of these systems and equipments available in the market are too expensive ¿ which usually prevents their use in large scale. Furthermore, most of them used for such purpose are imported, which further complicates their insertion in everyday applications. This work describes the development, implementation and application of a low-cost wireless sensor network for temperature, relative humidity and atmospheric pressure monitoring, in real-time as a national alternative for researches which demand equipments for environmental monitoring. The network consists of four sensor nodes and a coordinator node. Sensor nodes have a temperature and humidity sensor and a barometric sensor ¿ both with digital interface ¿ plus a low cost and low power microcontroller and a communication module for the wireless network operating at 2.4GHz for establishing connection to an IEEE 802.15.4 network. Coordinator node has another communication module to the wireless network connection, a microcontroller for receiving measurements, a memory card for storage of each sensor node¿s information, and Ethernet interface to provide sensor node¿s information in an embedded webpage, accessed through a static IP in a common internet browser. Tests performed in laboratories and in the field attested the node¿s autonomy (around 90 days for a 500mAh battery) and reach (approximately 150m line-of-sight), and proved the compliance of measurements performed by each sensor node, through comparison with a reference system
Mestrado
Eletrônica, Microeletrônica e Optoeletrônica
Mestre em Engenharia Elétrica
Lopes, Alison Zille 1982. "Contribuições para o desenvolvimento sustentável de um sistema de monitoramento e controle de galpões para frangos de corte." [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/260791.
Повний текст джерелаTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação
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Resumo: Em um âmbito global, a conquista de maior produtividade na agricultura e pecuária é extremamente importante para combater a pobreza e a fome, uma vez que cerca de 78 % da população pobre do mundo vive na zona rural e depende destas atividades para sobreviver. Neste cenário, na busca por soluções a problemas práticos relacionados à agricultura e pecuária, o acesso à tecnologia é fator determinante, levando países em desenvolvimento a explorarem os benefícios do paradigma open source (livre acesso, modificação e distribuição). No Brasil, a cadeia produtiva de aves é um dos principais setores do agronegócio, que se baseia em um modelo de integração composto principalmente por pequenos produtores, extremamente dependentes das integradoras, financeira e tecnologicamente, e com baixo nível de automação em seus aviários. Entretanto, a automação das instalações avícolas é a principal oportunidade para a melhoria do desempenho produtivo e bem estar das aves, além de permitir o uso racional da propriedade e demais recursos naturais, impactando positivamente na qualidade de vida dos produtores. Assim, este trabalho descreve o projeto e desenvolvimento de um sistema de automação destinado ao monitoramento e controle em instalações destinadas a criação de frangos de corte. Apresentando-se como uma proposta de automação open source software e hardware, este sistema foi concebido com o intuito de atrair contribuições das mais variadas fontes, principalmente do meio acadêmico e de usuários, incitando a discussão e o desenvolvimento de meios técnicos e estruturais necessários a sua implantação e aceitação entre pequenos e médios produtores de frangos de corte. O processo de desenvolvimento deste sistema, conduzido inteiramente através do uso de ferramentas gratuitas ou open source, também se beneficiou pelo emprego da tecnologia de transmissão sem fio Zigbee® e de uma distribuição Linux Embarcado. O padrão Zigbee® favoreceu a abordagem open source ao permitir a elaboração de uma proposta modular de automação; diferentes dispositivos de hardware (módulos) que operam colaborativamente, monitorando o ambiente térmico, controlando os sistemas de climatização e iluminação e registrando informações relacionadas aos planteis. A adoção do Linux embarcado reduziu a preocupação com detalhes do hardware, o que direcionou o foco para o software e sua usabilidade, produzindo um sistema mais atraente a usuários e a desenvolvedores (pesquisadores, estudantes ou entusiastas) interessados em colaborar com o projeto. Durante avaliações conduzidas no protótipo do sistema, este se mostrou estável na execução do monitoramento e controle, além de apresentar custo relativamente baixo frente suas características. Este sistema é o primeiro passo na direção de uma solução de automação sustentável, que ao beneficiar a sociedade, através de um sistema configurável e de fácil utilização, esta contribui pra sua manutenção e evolução. A sustentabilidade desta proposta está vinculada à sua associação a projetos de ensino, pesquisa e, principalmente, extensão universitária, aproximando produtor rural e meio acadêmico, gerando melhoria da produção e qualidade das instalações avícolas ao passo que proporciona aprendizado técnico e científico em uma área de grande importância para a nossa economia
Abstract: In a global context, achieving greater productivity in agriculture is extremely important to combat poverty and hunger, since about 78% of the world¿s poor people live in rural areas and depend on agriculture to survive. In this way, looking for practical solutions to agriculture problems, aiming at improving the quality of life of rural community, the access to technology is a key factor, which has led developing countries to explore the benefits of open source paradigm (free access, modification and distribution). In Brazil, the broiler production chain is one of the main sectors of its agribusiness, based on an integrated production model composed mainly by small producers heavily dependent on the integrated industry, financial and technologically, and with low level of automation in their broiler houses. However, the broiler houses¿ automation is the main opportunity to improve birds¿ productive performance and welfare, and it facilitates the rational use of the property and other natural resources, impacting positively on the broiler farmers¿ quality of life. This work describes the design and development of an automation system for monitoring and control in facilities for raising broiler chickens. Presenting itself as an open source software and hardware automation proposal, this system is designed in order to attract contributions from various sources, mainly from academia and users, by encouraging discussion and the development of technical and structural means to its implementation and acceptance among small and medium producers of broiler chickens. The system¿s development process, conducted entirely through the use of free or open source tools, was also benefited by the adoption of the ZigBee® wireless transmission technology and an embedded Linux distribution. The ZigBee® standard favored the open source approach by enabling the preparation of a modular automation proposal; different hardware devices (modules) that operate collaboratively, monitoring the thermal environment, controlling the climatization and illumination systems and recording information related to breeding stocks. The adoption of embedded Linux reduced the concern with hardware details, which directed the focus to software and its usability, producing a system more attractive to users and developers (researchers, students and enthusiasts) interested to collaborate with the project. During evaluations conducted in the system prototype, it presented a stable behavior in the implementation of monitoring and control activities, as well a relatively low cost before its features. This system is the first step toward a sustainable automation solution, while it benefits society, through a configurable and easy-to-use system, this contributes to its maintenance and evolution. The sustainability of this proposal is linked to its association with educational, research and, mainly, university extension projects, bringing farmers and academia together, improving the production and the quality of broiler facilities while providing technical and scientific learning in an area of great importance to our economy
Doutorado
Automação
Doutor em Engenharia Elétrica
Carvalho, Júnior Antônio Ramos de. "Navegação robótica em redes de sensores sem fio baseada no RSSI." Universidade Federal do Amazonas, 2013. http://tede.ufam.edu.br/handle/tede/2918.
Повний текст джерелаWireless Sensor Networks (WSNs) are commonly used in monitoring applications due to its capacity to sensing, processing and communicating, and its low cost. However, one limitation of WSN is on energy, because each device (sensor node) of the network needs to have low energy consumption, not allowing the use of extra hardware such as GPS. On the other hand, robots can assist in monitoring made by WSN. One possible application using robots in WSN is to search for events of interest, in which a robot browsing the network to find a specific event, using the signal strength (RSSI) as a reference for navigation. Solutions to this problem have been found in the literature. However, such works assume a devised propagation model, in which the RSSI regression curve versus distance is ideal for that scenario. We present in this dissertation two algorithms that solve the problem of robot navigation based on RSSI in search of an event. The first algorithm is based on the node signal coverage detection and the second uses probability to estimate distance and direction of the target node. Therefore, we conducted experiments to measure the RSSI value according to the distance in Amazon rainforest and represent the signal model propagation obtained in a simulator. Simulations based on the solutions of the literature showed that the percentage of arrival of these solutions is inversely related to the distance of departure from its target when subjected to propagation model detected in experiments. The two algorithms presented have been developed considering the propagation model of the signal obtained in the experiments and both find their target 100 % of the cases.
Redes de Sensores Sem Fio (RSSF) são comumente utilizadas em aplicações de monitoramento, devido à sua capacidade de sensoriar, processar, comunicar e seu baixo custo. No entanto, uma das limitações de RSSF é quanto à energia, pois cada dispositivo (nó sensor) dessa rede precisa ter baixo consumo de energia, não permitindo a utilização de hardwares extras, como o GPS. Por outro lado, robôs podem auxiliar no monitoramento feito por RSSF. Uma possível aplicação utilizando robôs em RSSF é a busca de eventos de interesse, na qual um robô navega na rede até encontrar um determinado evento, utilizando a potência de sinal (RSSI) como referência para sua navegação. Encontramos na literatura trabalhos que solucionam tal problema. Entretanto, tais trabalhos consideram um modelo de propagação idealizado, na qual a curva de regressão do RSSI em função da distância é ideal para aquele cenário. Apresentaremos nesta dissertação dois algoritmos que solucionam o problema de navegação do robô baseada na RSSI em busca de um evento. O primeiro algoritmo é baseado na detecção da borda de cobertura do sinal do nó e o segundo utiliza probabilidade para estimar distância e direção do nó alvo. Para o tal, realizamos experimentos para medir a valor de RSSI de acordo com a distância, na floresta Amazônica e representamos o modelo de propagação de sinal obtido em um simulador. Simulações baseadas nas soluções da literatura mostraram que o percentual de chegada destas soluções é inversamente relacionada à distancia de partida de seu alvo quando submetidas ao modelo de propagação detectado nos experimentos. Os dois algoritmos apresentados foram desenvolvidos considerando o modelo de propagação do sinal obtido nos experimentos e ambos encontram seu alvo em 100% dos casos.
Adissi, Marcéu Oliveira. "Sistema embarcado para estimação de torque, velocidade e eficiência em motores de indução." Universidade Federal da Paraíba, 2012. http://tede.biblioteca.ufpb.br:8080/handle/tede/5323.
Повний текст джерелаCoordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
The presented work aims at monitoring in real time the important parameters in induction motors in a non-invasive manner. A method for estimation of torque, shaft speed and energy efficiency has been developed. An embedded system is employed for acquiring electrical signals from the motor and local processing. The calculated values are transmitted to a monitoring unit through an IEEE 802.15.4-based wireless sensor network. At the base unit, various motors can be monitored in real time. To choose the method to be used, a survey on the main methods was made. The method by air-gap torque was considered the most appropriate to the requirements for being accurate and non-invasive. An experimental study was conducted to observe the accuracy of the estimated methods used, and the relationship between the wireless sensor network performance and the spectral occupancy at the operating environment. Therefore, the embedded system was deployed on a workbench of dynamic sinusoidal torque in an industrial environment. The performance of the embedded system and the estimation results were extremely positive. The results show that even with the difficulties of wireless transmission in some scenarios, the system was fully capable of providing processed information for the monitoring.
O trabalho proposto visa monitorar em tempo real grandezas importantes em motores de indução trifásicos de forma pouco invasiva. Foi desenvolvido um método de estimação de torque, velocidade no eixo e eficiência energética. Um sistema embarcado foi construído para a aquisição de sinais elétricos do motor e processamento local. Os valores calculados são transmitidos para estação base através de uma rede de sensores sem fio baseada no padrão IEEE 802.15.4. Na estação base, vários motores podem ser monitorados em tempo real. A fim de desenvolver o método a ser utilizado para estimação das grandezas, foram pesquisados os principais métodos existentes. O método a partir do torque no entreferro foi considerado o mais adequado às necessidades devido à sua exatidão e baixa invasividade. Um estudo experimental foi realizado para observar a exatidão dos métodos de estimação utilizados, assim como a relação entre o desempenho da rede sem fio e a ocupação espectral no ambiente operacional. Para isso, o sistema embarcado foi instalado em uma bancada de torque dinâmico senoidal em ambiente industrial. O desempenho do sistema embarcado e os resultados das estimações foram extremamente positivos. Os resultados mostram que, mesmo com as dificuldades na transmissão sem fio em alguns cenários, o sistema foi totalmente capaz de fornecer informações processadas para o monitoramento.
Gondal, Farrukh Mehmood. "Embedded Wireless Sensor Network for Aircraft/Automobile Tire Structural Health Monitoring." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/34222.
Повний текст джерелаMaster of Science
Petigara, Noshirwan Kavas 1979. "CRAM : co-operative routing and memory for networks of embedded sensors." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/87284.
Повний текст джерелаIncludes bibliographical references (leaves 66-69).
by Noshirwan Kavas Petigara.
M.Eng.
Chidambar, Munavalli Sainath. "Structural Data Acquisition Using Sensor Network." FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/879.
Повний текст джерелаSambuco, Emily Nicole. "Exploring Great Basin National Park using a high-resolution Embedded Sensor Network." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1555579768450066.
Повний текст джерелаSantos, Ivairton Monteiro. "Protocolo de roteamento de dados para redes de sensores sem fio com nó coletor móvel para controle da deriva em pulverização agrícola." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/3/3141/tde-24112014-153222/.
Повний текст джерелаThe efficient application of low cost pesticides is a challenge for agricultural production. Pesticide drift is the major cause of money loss, inefficiency in crop disease control, and environmental contamination in the crop spraying process. At the time of application, it is essential to know the environmental conditions, such as wind, temperature and humidity to minimize contamination by pesticide drift. This study proposes the use of wireless sensor networks in a support and control system for crop spraying, especially in aircraft application methods. Three system functionalities are proposed: In the first case, the sensor network evaluates environmental data at the time of application to notify the user if the environmental conditions are suitable for continuing with the application. The second case evaluates the wind speed and its direction to suggest corrections in the path of a spray vehicle. Due to this alteration in the vehicle path, the pesticide will be applied only in the appropriate area. The final case involves collecting data samples and analyzing the quality of the spraying operation by evaluating the deposition of pesticide over the crop. This work proposes a new routing data protocol to make possible the use of wireless sensor networks in aerial crop spraying. It ensures that the sensor node data will be delivered to the sink node. Through computer simulations, wireless sensor networks are shown to be useful in crop spraying to minimize and to control pesticide drift, to improve the quality of application, to reduce environmental contamination and to reduce costs and the duration of the application operation.
LI, QI. "ENERGY EFFICIENT EMBEDDED SYSTEM DESIGN FOR MEDICAL CARE SYSTEM USING WIRELESS SENSOR NETWORK." VCU Scholars Compass, 2008. http://scholarscompass.vcu.edu/etd/1624.
Повний текст джерелаGonzalez, Oscar V. "Reconfigurable wireless sensor platform for training and research in networked embedded systems." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0001063.
Повний текст джерелаAnozie, Chidi H. "Event-Triggered Design of Networked Embedded Automation Systems." University of Akron / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=akron1291754351.
Повний текст джерелаMorais, Bruno Maia de. "InteliCare Infraestrutura de Telessaúde para apoio a serviços de atenção domiciliar baseada em redes de sensores sem fio e sistemas embarcados." Universidade Federal da Paraíba, 2012. http://tede.biblioteca.ufpb.br:8080/handle/tede/6099.
Повний текст джерелаCoordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
This work presents a monitoring infrastructure for people in a situation of home care through the integration of wireless sensor networks and data processing in embedded systems, enabling a real-time monitoring of the clinical picture of each patient. To perform real-time telemetry, a sensor network with ZigBee technology was set and some biological signals were captured in order to validate the proposed infrastructure. This network performs the capture and transmission of data collected to base stations where a treatment system embedded in an FPGA is instructed to receive data, perform the necessary calculations and send the information obtained through an Ethernet network to a central installed in a monitoring central station. The use of a dedicated processing device such as an FPGA, provides a much greater efficiency than is typically found in general purpose processors and allows the customization of the hardware. Besides, reduces the final cost of the system. It also presented the integration of Arthron and InteliCare. Arthron is tool that works with flow distribution. This integration allows more real experiences of telemedical procedures so that you can have in a single transmission, audio, video, and biological signals. The monitoring system installed in the central station is responsible for storage and display the received data. It will display data in tables and graphs in real time and allow a team of experts make decisions and guide patients and / or their caregivers to perform a certain procedure.
Este trabalho apresenta uma infraestrutura de monitoramento para pessoas em situação de internação domiciliar através da integração de redes de sensores sem fio e processamento de dados em sistemas embarcados, possibilitando um acompanhamento em tempo de execução (online) do quadro clínico de cada paciente. Para realizar a telemetria online, uma rede de sensores com tecnologia ZigBee, foi montada e alguns sinais biológicos foram captados de forma a validar a infraestrutura proposta. Esta rede realiza a captação e envio dos dados coletados até estações base onde um sistema de tratamento embarcado em um FPGA fica encarregado de receber os dados, realizar os cálculos necessários e enviar as informações obtidas, através de uma rede Ethernet, a um sistema central de supervisão instalado em uma central de monitoramento. A utilização de um dispositivo de processamento dedicado, como um FPGA, proporciona ao sistema uma eficiência muito maior do que normalmente é encontrada em processadores de uso geral além de permitir a customização do hardware reduzindo o custo final do sistema. É apresentada também a integração da infraestrutura InteliCare com a ferramenta de distribuição de fluxos Arthron. Esta integração permite tornar mais real a experiência de colaboração em procedimentos médicos de forma que é possível ter numa mesma transmissão, áudio, vídeo e sinais biológicos. O sistema de supervisão instalado na central de monitoramento é responsável por gerenciar o armazenamento e a visualização dos dados recebidos. Ele exibe os dados em tabelas e gráficos em tempo de execução e permitirá que uma equipe de especialistas tome decisões e oriente os pacientes e/ou seus cuidadores para realizar determinado procedimento.
Hoang, Van Trinh. "Design under constraints of Dependability and Energy for Wireless Sensor Network." Thesis, Lorient, 2014. http://www.theses.fr/2014LORIS351/document.
Повний текст джерелаThe uncertain contexts in which recent WSN embedded applications evolve have bigimpact on these applications. Traditionally, the objective of availability generally doubleshardware and functional redundancy; it means that the overhead is doubled in term ofenergy and cost. Besides, wireless node system is powered by limited battery; hencepower consumption parameter is only set to a number of components and functionalitiesat minimum resources. However, due to the technology reduction, process variabilityconducts to increase the possibility of failures. In order to guarantee an acceptablequality of service for the users, and on the operating lifetime of the system, it should carrystudies at the upper phases involving both dependability and consumption constraints.This thesis aims to propose novel design for wireless sensor networks, in order to reduceenergy consumption and to increase network dependability
Spadazzi, Gianluca. "Middleware per Internet of Things: Java Embedded come caso di studio." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7865/.
Повний текст джерелаPatrick, Nathan A. "Evaluating Near Surface Lapse Rates Over Complex Terrain Using an Embedded Micro-Logger Sensor Network in Great Basin National Park." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1403203851.
Повний текст джерелаShi, Hong-Ling. "Development of an energy efficient, robust and modular multicore wireless sensor network." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2014. http://tel.archives-ouvertes.fr/tel-00968069.
Повний текст джерелаZewdu, Yesitla Ephrem. "Survey of microcontrollers and short-range radio transceivers for wireless sensors." Thesis, Mittuniversitetet, Institutionen för elektronikkonstruktion, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-39640.
Повний текст джерелаRashid, Md Jayedur. "Extending a networked robot system to include humans, tiny devices, and everyday objects." Doctoral thesis, Örebro universitet, Akademin för naturvetenskap och teknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-15247.
Повний текст джерелаChis, Andréea. "Méthodes et outils pour la compilation et l'optimisation logicielle des systèmes embarqués sans fil dédiés à des applications." Phd thesis, Ecole normale supérieure de lyon - ENS LYON, 2012. http://tel.archives-ouvertes.fr/tel-00768830.
Повний текст джерелаPersson, Anders. "Platform development of body area network for gait symmetry analysis using IMU and UWB technology." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-39498.
Повний текст джерела