Orientador: Nobuo Oki / Resumo: A utilização de redes de comunicação sem fio deixou de ser uma ferramenta opcional para tornar-se uma necessidade no monitoramento de residências, automóveis, controles de processos automatizados e comunicação entre as pessoas. Tratando-se de redes de transdutores cabeadas, as redes CAN (Controller Area Network) são utilizadas em automóveis modernos, instrumentação médica, em veículos táticos, na automação de processos, no transporte metropolitano e em sistemas de controle de fábricas. A maioria das estruturas críticas de sistemas de controle fazem uso do CAN em algum ponto na rede, para conectar sensores que se encontram distantes e controlar atuadores de um sistema, ou para conectar vários controladores que utilizam uma interface em comum. O padrão sem fio, IEEE 802.15.4, comercialmente conhecido como “ZigBee”, foi projetado para operar em baixas taxas de dados, com segurança e facilidade de configurações de rede. Esta tese tem como objetivo desenvolver um sistema heterogêneo utilizando microcontroladores ATMEGA em que, o modelo do protocolo CAN e o padrão IEEE 802.15.4 estejam acoplados. Este módulo será capaz de gerenciar e monitorar sensores e atuadores utilizando CAN e, através do padrão sem fio 802.15.4, comunicar-se com os outros módulos da rede. O interfaceamento entre os pacotes da rede de controle de área (CAN) com a rede ZigBee é realizado através da implementação de tabelas de dispersão (Hash Tables) para o gerenciamento e otimização da memória utilizada. As anál... (Resumo completo, clicar acesso eletrônico abaixo) / Doutor

Ultra wideband (UWB) communications has been a subject of much discussion over the last decade. The method of UWB has had a hard time to establish itself among other methods such as Bluetooth and WiFi but as internet of things (IoT) gains a foothold in our daily lives, UWB has presented some new application areas. These application areas are, among other things, self driving cars, energy efficient data transfer, health care applications, sensor networks and real time location systems. This project aims to use UWB communications to real-world applications, specifically, electrocardiography (ECG) - an application in health care in this project, and develop a prototype for the application. The prototype consists of two Android smart phones and two UWB modules (EVK1000 evaluation kits from DecaWave, Inc). Each smartphone connects a UWB module so that the two smart phones, one as sender and the other as receiver, can communicate directly through UWB radios. This is intended to serve as a proof-of-concept that UWB devices are well suited for short range data transfer applications. The result achieved by the project is an android application along with sending and receiving programs for the development boards by Decawave and additional information regarding UWB and its uses. The results also include a comparison of UWB, Bluetooth and WiFi as of todays standard. The goal of the project is to learn how android applications are programmed, how UWB is used in todays technology and how to program and use development boards presented by companies. The prototype has been built and shown that 12-lead simulated ECGsignals from the sender can be transfered to the receiver through the UWB communications. The work includes programming (in C) the two UWB modules for UWB communications, and Java for the android applications (programs) on the smart phones. The Android application is handling transmission of ECG signals to the sending UWB module and then receiving them from the receiving UWB module as well as displaying them on the receiver. The future work to continue the present project is to replace the sending smart phone by an ECG device that sends real ECG signals.

Made available in DSpace on 2016-12-12T17:38:35Z (GMT). No. of bitstreams: 1 Rafael Campos do Prado.pdf: 1877613 bytes, checksum: b2137af1aaaf0b5f792c83d7fba259b9 (MD5) Previous issue date: 2008-06-12 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The proposal of this work is to implement a wireless sensor network in order to demonstrate the feasibility to remotely monitor the temperature for the control system of domestic air conditioners. The main objective is to develop an IEEE 802.15.4 wireless sensor network in order to send the temperature from different regions of a refrigerated room for the control system of the air conditioner aiming to improve the temperature control. So, first, a study of the gradient of temperature existing in a room refrigerated by a traditional air conditioner system is presented and, after that, some experimental results of the temperature control using the wireless sensor network are showed. These results appoint that the temperature control system is improved by using the network regarding to the average temperature of the places where the sensors are located. A LabVIEW based application for a hand computer has been developed to monitor and configure the network. For the wireless communication, a development kit from Freescale has been used. / A proposta deste trabalho é a implementação de uma rede de sensores sem fio visando ostrar a viabilidade de se fazer um sensoriamento remoto de temperatura para o sistema de controle de condicionadores de ar. O principal objetivo é desenvolver uma rede de sensores sem fio, utilizando o padrão IEEE 802.15.4, de forma a enviar a temperatura de pontos distintos do ambiente para o sistema de controle dos condicionadores de ar, no intuito de se obter um melhor controle da temperatura ambiente. Dessa forma, são apresentados os estudos realizados sobre o gradiente de temperatura existente em um sistema refrigerado por um condicionador de ar de uso doméstico tradicional e, em seguida, os resultados obtidos com a implementação do sistema com a rede de sensores. Os resultados mostram que o desempenho do controle de temperatura é efetivamente melhorado no que diz respeito à média da temperatura dos pontos onde estão localizados os sensores. Para o monitoramento e parametrização da rede é utilizada uma aplicação, desenvolvida através da linguagem de programação LabVIEW, instalada em um computador de mão. Já o desenvolvimento da rede de comunicação é baseado na tecnologia da Freescale, MC13213. .

Made available in DSpace on 2016-12-12T17:38:35Z (GMT). No. of bitstreams: 1 Rodrigo Curvello.pdf: 1999778 bytes, checksum: bc5227383e1e6e17778153bc93fbd675 (MD5) Previous issue date: 2008-12-12 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The objective of this work is the development of a remote supervision of Household appliances within a wireless network using the standard communication IEEE 802.15.4. As main objectives of this system it is important to point the controlling, monitoring, configuration and supervision of the household appliances within the network, creating so the possibility of issue commands to the household appliances and the recivement of the information about their state operation. Every data are stored in the data base of the system to later mining, creating the reports of utilization of each household appliance. With that, it is possible to generate alerts about the performance of the household appliances, going off messages to users of the system. The obtained results show that the access to the system data, by remote way, via the publication of its application on the Web allow the house users, factors and the household appliances maintenance staff, manage the system. It helps so in the development of new products, in the scheduling of preventive maintenance, besides of the increasing of the possibilities of news services to users. To the development of the system it was used the programming language Java, mainly its technologies applied to the Web as JSP and Servlet, data base MySQL and the container Web Apache Tomcat. / A proposta deste trabalho é o desenvolvimento de um sistema de supervisão de eletrodomésticos em rede sem fio utilizando o padrão de comunicação IEEE 4. Como objetivos principais da aplicação estão o controle, monitoramento, parametrização e supervisão dos eletrodomésticos da rede, possibilitando assim o envio iandos para os eletrodomésticos e o recebimento das informações sobre o estado operação dos mesmos. Os dados recebidos são armazenados no banco de dados da aplicação para posterior filtragem, gerando os relatórios de utilização para cada um dos eletrodomésticos. Com isto é possível gerar alertas sobre o comportamento dos bmesticos, disparando avisos para os usuarios cadastrados na aplicação Os resultados obtidos mostram que o acesso aos dados do sistema remotamente, através da publicação da aplicação na Web, permite aos usuanos domesticos, fabricantes e pessoal responsável pela manutenção dos eletrodomesticos, gerenciarem o sistema, auxiliando no desenvolvimento de novos produtos e agendamento de manutenções preventivas, além aumentar as possibilidades de novos serviços aos usuarios Para o divimento da aplicação foram utilizadas a linguagem de programação Java, principalmente suas tecnologias voltadas para Web como JSP e Serviet, banco de dados MySQL e container Web Apache TomCat.

Submitted by MARCOS ANTONIO ESTREMOTE null (estremot@gmail.com) on 2017-11-03T20:18:22Z No. of bitstreams: 1 Tese Estremote.pdf: 11274082 bytes, checksum: d68bb503cd676b58bcfab15d1c39ba5c (MD5) / Approved for entry into archive by LUIZA DE MENEZES ROMANETTO (luizamenezes@reitoria.unesp.br) on 2017-11-13T17:35:07Z (GMT) No. of bitstreams: 1 estremote_ma_dr_ilha.pdf: 11274082 bytes, checksum: d68bb503cd676b58bcfab15d1c39ba5c (MD5) / Made available in DSpace on 2017-11-13T17:35:07Z (GMT). No. of bitstreams: 1 estremote_ma_dr_ilha.pdf: 11274082 bytes, checksum: d68bb503cd676b58bcfab15d1c39ba5c (MD5) Previous issue date: 2017-02-24 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / A utilização de redes de comunicação sem fio deixou de ser uma ferramenta opcional para tornar-se uma necessidade no monitoramento de residências, automóveis, controles de processos automatizados e comunicação entre as pessoas. Tratando-se de redes de transdutores cabeadas, as redes CAN (Controller Area Network) são utilizadas em automóveis modernos, instrumentação médica, em veículos táticos, na automação de processos, no transporte metropolitano e em sistemas de controle de fábricas. A maioria das estruturas críticas de sistemas de controle fazem uso do CAN em algum ponto na rede, para conectar sensores que se encontram distantes e controlar atuadores de um sistema, ou para conectar vários controladores que utilizam uma interface em comum. O padrão sem fio, IEEE 802.15.4, comercialmente conhecido como “ZigBee”, foi projetado para operar em baixas taxas de dados, com segurança e facilidade de configurações de rede. Esta tese tem como objetivo desenvolver um sistema heterogêneo utilizando microcontroladores ATMEGA em que, o modelo do protocolo CAN e o padrão IEEE 802.15.4 estejam acoplados. Este módulo será capaz de gerenciar e monitorar sensores e atuadores utilizando CAN e, através do padrão sem fio 802.15.4, comunicar-se com os outros módulos da rede. O interfaceamento entre os pacotes da rede de controle de área (CAN) com a rede ZigBee é realizado através da implementação de tabelas de dispersão (Hash Tables) para o gerenciamento e otimização da memória utilizada. As análises realizadas de tempo de inserção, remoção e comunicação de dados, com o auxílio da técnica computacional de tabelas de dispersão para o armazenamento das informações, mostram que este procedimento favorece a comunicação entre os protocolos de redes industriais com os protocolos de redes sem fios. A economia de memória do microcontrolador com a utilização das tabelas de dispersão proposta nesta tese chegou a ser em média 750% superior do que as que não se utilizam das tabelas de dispersão. / The use of wireless communication networks is not an optional tool and become a requirement in automated systems, such as monitoring home, automobiles, automated process control and communication between people. In another aspect, wired networks, such as CAN networks, are used in modern automobiles, medical instrumentation, tactical vehicles, process automation, metropolitan transport and manufactory control systems. Many critical structures in control system use CAN network at some point, to connect sensors that are far away and to control system actuators, or to connect several controllers that use a common interface. The wireless IEEE standard 802.15.4, commercially known as “ZigBee”, is designed to operate at low data transfer rates, with security and facility of network configurations. This thesis aims to develop a heterogeneous system using ATMEGA microcontrollers in which the CAN protocol model and the IEEE standard 802.15.4 are coupled. This module is capable of managing and monitoring sensors and actuators using CAN and, through the IEEE standard 802.15.4, communicating with the other modules in network. The interface between the CAN network packets with the ZigBee network is performed through the implementation of Hash Tables to manage and optimize the memory used. The analysis of time of insertion, delete and data communication, with the aid of the computational technique of hash tables for the storage of information, show that this procedure favors the communication between the protocols of industrial networks with protocols of wireless networks . The memory economy of the microcontroller with the the hash tables proposed in this thesis was on average 750% higher than those without the hash tables.

Made available in DSpace on 2014-12-17T14:55:50Z (GMT). No. of bitstreams: 1 DISSERTACAO RODRIGO SOARES SEMENTE.pdf: 1203856 bytes, checksum: 4eaca6c76cb5befb0c8681343579bc26 (MD5) Previous issue date: 2011-07-22 / Wireless sensors and actuators Networks specified by IEEE 802.15.4, are becoming increasingly being applied to instrumentation, as in instrumentation of oil wells with completion Plunger Lift type. Due to specific characteristics of the environment being installed, it s find the risk of compromising network security, and presenting several attack scenarios and the potential damage from them. It`s found the need for a more detailed security study of these networks, which calls for use of encryption algorithms, like AES-128 bits and RC6. So then it was implement the algorithms RC6 and AES-128, in an 8 bits microcontroller, and study its performance characteristics, critical for embedded applications. From these results it was developed a Hybrid Algorithm Cryptographic, ACH, which showed intermediate characteristics between the AES and RC6, more appropriate for use in applications with limitations of power consumption and memory. Also was present a comparative study of quality of security among the three algorithms, proving ACH cryptographic capability. / As redes de sensores e atuadores sem-fio especificadas pelo padr?o IEEE 802.15.4, est?o cada vez mais sendo aplicadas ? instrumenta??o, como na instrumenta??o de po?os de petr?leo com completa??o do tipo Plunger Lift. Devido ?s caracter?sticas espec?ficas do ambiente que est?o sendo instaladas, foram observados riscos de comprometimento de seguran?a da rede, e estudados v?rios cen?rios de ataques e os danos potenciais dos mesmos. Verificou-se assim a necessidade de um estudo mais detalhado de seguran?a dessas redes, que preconiza o uso de algoritmos de criptografia, como o AES-128 bits e RC6. Assim foram implementados os algoritmos AES-128 e RC6, em um microcontrolador de apenas 8 bits, e realizados estudos detalhados de suas caracter?sticas de desempenho, crucial para aplica??es embarcadas. A partir desses resultados foi criado um Algoritmo Criptogr?fico H?brido, ACH, que apresentou caracter?sticas intermedi?rias entre o AES e o RC6, mais apropriadas para uso em aplica??es com limita??es de consumo de energia e mem?ria. Tamb?m foi realizado um estudo comparativo da qualidade de seguran?a entre os tr?s algoritmos, provando a capacidade criptogr?fica do ACH.

The Internet is one of the greatest innovations ever created by mankind, and it is a technical trend that has moved into industries to facilitate automation, supervision and management in the form of IoT devices. These devices are designed to be extremely lightweight and operate in low-power and lossy networks, and therefore run a low duty cycle and CPU-clock frequency to reserve battery life. Fog nodes are located on site to minimize network delay and provide centralized processing to handle data from hundreds of connected devices in wireless sensor networks. This is the future of industrial automation. Our goal is to show the functionality of an industrial IoT network within the scope of Fog computing by implementing a closed-loop control system in Cooja. Performance evaluations considered network reliability in terms of packet delivery ratio and timeliness. We assume that wireless IoT devices are running RPL routing (one of the most common standard routing protocols for IoT applications). We implement a mobility controller at the Fog-server in order to collect measurements made by the Fog nodes and send commands to IoT devices. In this thesis work, we assume that the commands are related to the mobility pattern of mobile node (e.g. AGVs in industrial automation) in order to avoid collision. From the simulation results we can conclude that sampling rates and node density have a greater impact on performance compared to payload size. We cannot be sure that our results reflect what a real-world evaluation would imply as we are running an emulation software, even though it has a very realistic physical layer. We do however believe that with substantial testing and improvements to both Cooja and our implementation, an accurate representation can be accomplished and algorithms in Cooja can be moved to real-world implementations.

Monitoring and controlling smart grid assets in a timely and reliable manner is highly desired for emerging smart grid applications. Wireless Sensor Networks (WSNs) are anticipated to be widely utilized in a broad range of smart grid applications due to their numerous advantages along with their successful adoption in various critical areas including military and health care. Despite these advantages, the use of WSNs in such critical applications has brought forward a new challenge of ful lling the Quality of Service (QoS) requirements of these applications. Providing QoS support is a challenging issue due to highly resource constrained nature of sensor nodes, unreliable wireless links and harsh operation environments. In this thesis we critically investigate the problem of QoS provisioning in WSNs. We identify challenges, limitations and requirements for applying QoS provisioning for WSNs in smart grid applications. We nd that the topic of data prioritization techniques at the MAC layer to provide delay bounds in condition monitoring applications is not well developed. We develop six novel QoS schemes that provide data di erentiation and reduce the latency of high priority tra c in a smart grid context. These schemes are namely; Delay-Responsive Cross layer (DRX), Fair and Delay-aware Cross layer (FDRX), Delay-Responsive Cross layer with Linear backo (LDRX), Adaptive Realistic and Stable Model (ARSM), Adaptive Inter-cluster head Delay Control (AIDC) and QoS-aware GTS Allocation (QGA). Furthermore, we propose a new Markov-based model for IEEE 802.15.4 MAC namely, Realistic and Stable Markovbased (RSM). RSM considers actual network conditions and enhances the stability of the WSNs. We show through analytical and simulation results that all of the presented schemes reduce the end-to-end delay while maintaining good energy consumption and data delivery values.

Thesis deals with the issue of lighting technology control using wireless technology. Thesis includes a description of current possibilities of control light technology, methods of digital signal transmission using radio waves and protocols dealing with this issue are described. This thesis also contains a park aimed at the selection of suitable electronic components including the design of individual electronic blocks and printed circuit board. The conclusion of the thesis is the realization of electronic modules, including the creation of module software and measurement of achieved parameters under real conditions.

The objective of this thesis is to get familiar with wireless sensor networks technologies and with standard IEEE 802.15.4. and communication principle in wireless sensor networks built on this standard. Main goal of this project is to design a packet analyzer, which is capable to catch data on chosen channel and this data is able to analyze. Part of this project is production of necessary microcontroller software equipment. Another output of this project is do a research of available packet analyzers on market and compare them with analyzer build by this thesis.