DOCSLIB.ORG

System Design and Testbed Implementation

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
System Design and Testbed Implementation Multi-purpose Embedded Communication Gateway: System Design and Testbed Implementation Chi Winth Ea Morten Sørbø Lei Jiao This master’s thesis is carried out as a part of the education at the University of Agder and is therefore approved as a part of this education. However, this does not imply that the University answers for the methods that are used or the conclusions that are drawn. University of Agder, 2014 Faculty of Information and Communication Technology Department of Engineering and Science Chi Winth Ea Multi-purpose Embedded Communication Gateway: Morten Sørbø System Design and Testbed Implementation Version Control Version Status Date Change Author 0.1 Draft 2014-05-11 Chapters 1, 2 and 3 CWE 0.2 Draft 2014-05-18 All chapters changed CWE and MS 0.3 Draft 2014-05-24 All chapters changed CWE and MS 0.4 Draft 2014-05-29 All chapters changed CWE and MS 0.5 Review 2014-05-30 All chapters changed CWE and MS 0.6 Review 2014-06-01 All chapters changed CWE and MS 0.7 Review 2014-06-01 All chapters changed CWE and MS 1.0 Final 2013-06-02 All chapters changed CWE and MS I Version 0.7 Chi Winth Ea Multi-purpose Embedded Communication Gateway: Morten Sørbø System Design and Testbed Implementation Preface This dissertation was written by ICT masterstudents at the University of Agder in Grimstad, Norway, from January 2014 to June 2014. The thesis has been supervised by Postdoctoral researcher Lei Jiao, University of Agder. With weekly meetings, the process has been continuously smooth as there has always been enough work to do. The equipment used during the thesis is financed by the University of Agder. Some was already available at the University, but most of the devices had to be aquired by the writers. As time was of the essence, it has been important to choose equipment that was easily available to borrow or purchase. II Version 0.7 Chi Winth Ea Multi-purpose Embedded Communication Gateway: Morten Sørbø System Design and Testbed Implementation Acknowledgements We would like to express our gratitude towards Dr. Lei Jiao for his invaluable guidance during this dissertation. It has been a pleasure having him as our supervisor as his input during our time together steered us towards the completion of our work. He has been very gracious with his time, and made us feel prioritized along the whole process. Grimstad June, 2014 Chi Winth Ea and Morten Sørbø III Version 0.7 Chi Winth Ea Multi-purpose Embedded Communication Gateway: Morten Sørbø System Design and Testbed Implementation Abstract This dissertation revolves around developing a multi-purpose embedded communication gateway. The gateway is equipped with multiple communication interfaces including Ethernet, Bluetooth, WiFi, Zigbee, LTE, and it can be configured and utilized for many purposes, such as a failover of an Ethernet cable via 4G in order to maintain the network connectivity. Raspberry Pi circuit board and the operating system Raspbian are selected as the hardware and the software platforms respectively. Different communication interfaces are coordinated by the Raspberry Pi and are configured via Linux scripts according to various use cases. Furthermore, a hardware watchdog is adopted to enhance the availability of system. In addition, the system is encapsulated into a box to increase its portability. The system is validated and evaluated through rigorous test-bed experiments. Experiment results indicate that the developed router works smoothly and reliably in environments with little electrical disturbances. IV Version 0.7 Chi Winth Ea Multi-purpose Embedded Communication Gateway: Morten Sørbø System Design and Testbed Implementation Contents 1 Introduction ................................................................................................................................... 12 1.1 Background ............................................................................................................................ 13 1.2 Problem Statement ............................................................................................................... 13 1.3 Problem Solution ................................................................................................................... 13 1.4 Organization of the Dissertation ........................................................................................... 15 2 Existing Work ................................................................................................................................. 16 2.1 Commercial Products ............................................................................................................ 16 2.2 Research Studies ................................................................................................................... 17 2.2.1 Network Failover ........................................................................................................... 17 2.2.2 Data Syncronization Technologies ................................................................................ 17 2.2.3 Watchdog as a Reliability Improvement ....................................................................... 18 3 System Design ............................................................................................................................... 20 3.1 System Overview ................................................................................................................... 20 3.2 Overview of Hardware .......................................................................................................... 21 3.2.1 Main Computer Board – Raspberry Pi ........................................................................... 22 3.2.2 Watchdog – Arduino...................................................................................................... 23 3.3 Overview of Software ............................................................................................................ 23 3.3.1 Operating System for Raspberry Pi ............................................................................... 24 3.4 Overview of Interfaces .......................................................................................................... 25 3.4.1 Technologies .................................................................................................................. 25 3.4.2 Communication Dongles ............................................................................................... 27 4 Implementation ............................................................................................................................. 28 4.1 Software Installation and Interface Initialization .................................................................. 28 4.1.1 Operation System Installation ....................................................................................... 28 4.1.2 Mobile Broadband Software ......................................................................................... 31 V Version 0.7 Chi Winth Ea Multi-purpose Embedded Communication Gateway: Morten Sørbø System Design and Testbed Implementation 4.1.3 Wi-Fi Access Point ......................................................................................................... 33 4.1.4 Ethernet ......................................................................................................................... 35 4.1.5 Routing .......................................................................................................................... 35 4.1.6 E-mail ............................................................................................................................. 39 4.1.7 Bluetooth ....................................................................................................................... 39 4.1.8 ZigBee ............................................................................................................................ 41 4.1.9 Kernel Compilation ........................................................................................................ 43 4.1.10 SD-Card Protection ........................................................................................................ 45 4.1.11 MySQL Installation Proposal.......................................................................................... 47 4.2 Mobile Broadband Failover ................................................................................................... 49 4.2.1 The Initialization of the Script ....................................................................................... 51 4.2.2 While Loop When There is Internet Connectivity ......................................................... 52 4.2.3 While Loop When There is Only Local Network Access ................................................ 54 4.2.4 While Loop When There is No Network Access ............................................................ 55 4.3 The Watchdog ....................................................................................................................... 57 4.3.1 Internal Watchdog ......................................................................................................... 57 4.3.2 External Watchdog ........................................................................................................ 59 4.4 Other Reliability Measures .................................................................................................... 63 4.5 Physical Implementation ......................................................................................................
Load more

Recommended publications
  • A 1024-Core 70GFLOPS/W Floating Point Manycore Microprocessor
    A 1024-core 70GFLOPS/W Floating Point Manycore Microprocessor Andreas Olofsson, Roman Trogan, Oleg Raikhman Adapteva, Lexington, MA The Past, Present, & Future of Computing SIMD MIMD PE PE PE PE MINI MINI MINI CPU CPU CPU PE PE PE PE MINI MINI MINI CPU CPU CPU PE PE PE PE MINI MINI MINI CPU CPU CPU MINI MINI MINI BIG BIG CPU CPU CPU CPU CPU BIG BIG BIG BIG CPU CPU CPU CPU PAST PRESENT FUTURE 2 Adapteva’s Manycore Architecture C/C++ Programmable Incredibly Scalable 70 GFLOPS/W 3 Routing Architecture 4 E64G400 Specifications (Jan-2012) • 64-Core Microprocessor • 100 GFLOPS performance • 800 MHz Operation • 8GB/sec IO bandwidth • 1.6 TB/sec on chip memory BW • 0.8 TB/sec network on chip BW • 64 Billion Messages/sec IO Pads Core • 2 Watt total chip power • 2MB on chip memory Link Logic • 10 mm2 total silicon area • 324 ball 15x15mm plastic BGA 5 Lab Measurements 80 Energy Efficiency 70 60 50 GFLOPS/W 40 30 20 10 0 0 200 400 600 800 1000 1200 MHz ENERGY EFFICIENCY ENERGY EFFICIENCY (28nm) 6 Epiphany Performance Scaling 16,384 G 4,096 F 1,024 L 256 O 64 4096 P 1024 S 16 256 64 4 16 1 # Cores On‐demand scaling from 0.25W to 64 Watt 7 Hold on...the title said 1024 cores! • We can build it any time! • Waiting for customer • LEGO approach to design • No global timinga paths • Guaranteed by design • Generate any array in 1 day • ~130 mm2 silicon area 1024 Cores 1Core 8 What about 64-bit Floating Point? Single Precision Double Precision 2 FLOPS/CYCLE 2 FLOPS/CYCLE 64KB SRAM 64KB SRAM 0.215mm^2 0.237mm^2 700MHz 600MHz 9 Epiphany Latency Specifications
    [Show full text]
  • Comparison of 116 Open Spec, Hacker Friendly Single Board Computers -- June 2018
    Comparison of 116 Open Spec, Hacker Friendly Single Board Computers -- June 2018 Click on the product names to get more product information. In most cases these links go to LinuxGizmos.com articles with detailed product descriptions plus market analysis. HDMI or DP- USB Product Price ($) Vendor Processor Cores 3D GPU MCU RAM Storage LAN Wireless out ports Expansion OSes 86Duino Zero / Zero Plus 39, 54 DMP Vortex86EX 1x x86 @ 300MHz no no2 128MB no3 Fast no4 no5 1 headers Linux Opt. 4GB eMMC; A20-OLinuXino-Lime2 53 or 65 Olimex Allwinner A20 2x A7 @ 1GHz Mali-400 no 1GB Fast no yes 3 other Linux, Android SATA A20-OLinuXino-Micro 65 or 77 Olimex Allwinner A20 2x A7 @ 1GHz Mali-400 no 1GB opt. 4GB NAND Fast no yes 3 other Linux, Android Debian Linux A33-OLinuXino 42 or 52 Olimex Allwinner A33 4x A7 @ 1.2GHz Mali-400 no 1GB opt. 4GB NAND no no no 1 dual 40-pin 3.4.39, Android 4.4 4GB (opt. 16GB A64-OLinuXino 47 to 88 Olimex Allwinner A64 4x A53 @ 1.2GHz Mali-400 MP2 no 1GB GbE WiFi, BT yes 1 40-pin custom Linux eMMC) Banana Pi BPI-M2 Berry 36 SinoVoip Allwinner V40 4x A7 Mali-400 MP2 no 1GB SATA GbE WiFi, BT yes 4 Pi 40 Linux, Android 8GB eMMC (opt. up Banana Pi BPI-M2 Magic 21 SinoVoip Allwinner A33 4x A7 Mali-400 MP2 no 512MB no Wifi, BT no 2 Pi 40 Linux, Android to 64GB) 8GB to 64GB eMMC; Banana Pi BPI-M2 Ultra 56 SinoVoip Allwinner R40 4x A7 Mali-400 MP2 no 2GB GbE WiFi, BT yes 4 Pi 40 Linux, Android SATA Banana Pi BPI-M2 Zero 21 SinoVoip Allwinner H2+ 4x A7 @ 1.2GHz Mali-400 MP2 no 512MB no no WiFi, BT yes 1 Pi 40 Linux, Android Banana
    [Show full text]
  • I Know What You Streamed Last Night: on the Security and Privacy of Streaming
    Digital Investigation xxx (2018) 1e12 Contents lists available at ScienceDirect Digital Investigation journal homepage: www.elsevier.com/locate/diin DFRWS 2018 Europe d Proceedings of the Fifth Annual DFRWS Europe I know what you streamed last night: On the security and privacy of streaming * Alexios Nikas a, Efthimios Alepis b, Constantinos Patsakis b, a University College London, Gower Street, WC1E 6BT, London, UK b Department of Informatics, University of Piraeus, 80 Karaoli & Dimitriou Str, 18534 Piraeus, Greece article info abstract Article history: Streaming media are currently conquering traditional multimedia by means of services like Netflix, Received 3 January 2018 Amazon Prime and Hulu which provide to millions of users worldwide with paid subscriptions in order Received in revised form to watch the desired content on-demand. Simultaneously, numerous applications and services infringing 15 February 2018 this content by sharing it for free have emerged. The latter has given ground to a new market based on Accepted 12 March 2018 illegal downloads which monetizes from ads and custom hardware, often aggregating peers to maximize Available online xxx multimedia content sharing. Regardless of the ethical and legal issues involved, the users of such streaming services are millions and they are severely exposed to various threats, mainly due to poor Keywords: fi Security hardware and software con gurations. Recent attacks have also shown that they may, in turn, endanger Privacy others as well. This work details these threats and presents new attacks on these systems as well as Streaming forensic evidence that can be collected in specific cases. Malware © 2018 Elsevier Ltd. All rights reserved.
    [Show full text]
  • Compulab Document
    Hayetsira St. 17, Yokneam, Israel Tel: +972-48-290-100 Fax: +972-48-325-251 www.compulab.co.il 14-July-2013 CompuLab introduces Utilite – a single-core to quad-core ARM Linux desktop starting at $99 Yokneam, Israel - 14-July-2013 - CompuLab is introducing Utilite – a miniature ARM-based desktop computer. Powered by Freescale i.MX6 system-on-chip, Utilite is the next generation of CompuLab’s highly acclaimed Trim-Slice computer. Featuring a quad-core ARM Cortex-A9 CPU, up-to 4GB RAM and dual-head 1080p display output, Utilite expands the 2011 Trim-Slice offering with up-to twice the performance and less than half the starting price of $99. Designed into an elegant “zero-screws” housing and measuring only 5.3” x 3.9” x 0.8”, Utilite provides unprecedentedly rich I/O with dual GbE, 5 USB ports, 802.11 WiFi and Bluetooth. High performance, low-power, rich I/O and miniature form-factor position the Utilite as an attractive solution for a variety of applications such as media player, IPTV, infotainment systems, digital signage, thin client and small-footprint desktop replacement. Utilite will be offered with fully featured, desktop-grade Ubuntu Linux or Android operating systems delivering rich multimedia and PC-like user experience. “In 2011 CompuLab’s Trim-Slice has pioneered the market of ARM-based computers,” said Igor Vaisbein, VP Business Development at CompuLab. “Utilite pushes the boundaries of ARM desktops even further by doubling the performance and providing more connectivity while maintaining the same tiny form-factor and drastically reducing cost.” Utilite is particularly attractive to software developers since it is a high-performance, open platform designed into a commercial grade product.
    [Show full text]
  • Openbricks Embedded Linux Framework - User Manual I
    OpenBricks Embedded Linux Framework - User Manual i OpenBricks Embedded Linux Framework - User Manual OpenBricks Embedded Linux Framework - User Manual ii Contents 1 OpenBricks Introduction 1 1.1 What is it ?......................................................1 1.2 Who is it for ?.....................................................1 1.3 Which hardware is supported ?............................................1 1.4 What does the software offer ?............................................1 1.5 Who’s using it ?....................................................1 2 List of supported features 2 2.1 Key Features.....................................................2 2.2 Applicative Toolkits..................................................2 2.3 Graphic Extensions..................................................2 2.4 Video Extensions...................................................3 2.5 Audio Extensions...................................................3 2.6 Media Players.....................................................3 2.7 Key Audio/Video Profiles...............................................3 2.8 Networking Features.................................................3 2.9 Supported Filesystems................................................4 2.10 Toolchain Features..................................................4 3 OpenBricks Supported Platforms 5 3.1 Supported Hardware Architectures..........................................5 3.2 Available Platforms..................................................5 3.3 Certified Platforms..................................................7
    [Show full text]
  • Survey and Benchmarking of Machine Learning Accelerators
    1 Survey and Benchmarking of Machine Learning Accelerators Albert Reuther, Peter Michaleas, Michael Jones, Vijay Gadepally, Siddharth Samsi, and Jeremy Kepner MIT Lincoln Laboratory Supercomputing Center Lexington, MA, USA freuther,pmichaleas,michael.jones,vijayg,sid,[email protected] Abstract—Advances in multicore processors and accelerators components play a major role in the success or failure of an have opened the flood gates to greater exploration and application AI system. of machine learning techniques to a variety of applications. These advances, along with breakdowns of several trends including Moore’s Law, have prompted an explosion of processors and accelerators that promise even greater computational and ma- chine learning capabilities. These processors and accelerators are coming in many forms, from CPUs and GPUs to ASICs, FPGAs, and dataflow accelerators. This paper surveys the current state of these processors and accelerators that have been publicly announced with performance and power consumption numbers. The performance and power values are plotted on a scatter graph and a number of dimensions and observations from the trends on this plot are discussed and analyzed. For instance, there are interesting trends in the plot regarding power consumption, numerical precision, and inference versus training. We then select and benchmark two commercially- available low size, weight, and power (SWaP) accelerators as these processors are the most interesting for embedded and Fig. 1. Canonical AI architecture consists of sensors, data conditioning, mobile machine learning inference applications that are most algorithms, modern computing, robust AI, human-machine teaming, and users (missions). Each step is critical in developing end-to-end AI applications and applicable to the DoD and other SWaP constrained users.
    [Show full text]
  • Cucumber Linux Distribution Scott Court February 16, 2018 Who Am I?
    An Overview of How I Created the Cucumber Linux Distribution Scott Court February 16, 2018 Who am I? What is Cucumber Linux? ● A Linux distribution built entirely from source, from scratch ● An independent distribution: it’s not based on any other Linux distribution. ● Inspired by: a mixture of Slackware and Linux from Scratch. ● Architectures: i686 and x86_64 ● Package manager: pkgtools (borrowed from Slackware; uses tar archives as packages like Pacman). ● License: MIT ● Mission: provide a Linux distribution that follows the Unix Philosophy with a focus on simplicity, stability and security, and is usable as an every day, general purpose operating system. What can it Do? ● It’s functional as both a server and desktop operating system. ● Server Operating System: – Contains a fully functional LAMP stack as well as SSH, mail, DNS, FTP and Rsync servers. – Runs the web server and mail server for cucumberlinux.com. – Runs the primary mirror for Cucumber Linux (http and rsync). ● Desktop Operating System: – Comes with the XFCE desktop environment, a web browser, a mail client and an office suite. – It’s running this presentation right now. May 2016 – How it Began ● I had just completed my freshman year of college. ● I was looking for a project to work on that Summer. ● I had grown unhappy with the direction most every other Linux distribution was going in (namely the exodus from Sysvinit to Systemd). ● I had always had an interest in operating system development. ● So I set out to make my own Linux distribution, without Systemd. May 2016 – July 2016 ● May, June and July of 2016 were spent doing research and trying out different techniques for building a Linux system from scratch.
    [Show full text]
  • Building Embedded Linux Systems ,Roadmap.18084 Page Ii Wednesday, August 6, 2008 9:05 AM
    Building Embedded Linux Systems ,roadmap.18084 Page ii Wednesday, August 6, 2008 9:05 AM Other Linux resources from O’Reilly Related titles Designing Embedded Programming Embedded Hardware Systems Linux Device Drivers Running Linux Linux in a Nutshell Understanding the Linux Linux Network Adminis- Kernel trator’s Guide Linux Books linux.oreilly.com is a complete catalog of O’Reilly’s books on Resource Center Linux and Unix and related technologies, including sample chapters and code examples. ONLamp.com is the premier site for the open source web plat- form: Linux, Apache, MySQL, and either Perl, Python, or PHP. Conferences O’Reilly brings diverse innovators together to nurture the ideas that spark revolutionary industries. We specialize in document- ing the latest tools and systems, translating the innovator’s knowledge into useful skills for those in the trenches. Visit con- ferences.oreilly.com for our upcoming events. Safari Bookshelf (safari.oreilly.com) is the premier online refer- ence library for programmers and IT professionals. Conduct searches across more than 1,000 books. Subscribers can zero in on answers to time-critical questions in a matter of seconds. Read the books on your Bookshelf from cover to cover or sim- ply flip to the page you need. Try it today for free. main.title Page iii Monday, May 19, 2008 11:21 AM SECOND EDITION Building Embedded Linux SystemsTomcat ™ The Definitive Guide Karim Yaghmour, JonJason Masters, Brittain Gilad and Ben-Yossef, Ian F. Darwin and Philippe Gerum Beijing • Cambridge • Farnham • Köln • Sebastopol • Taipei • Tokyo Building Embedded Linux Systems, Second Edition by Karim Yaghmour, Jon Masters, Gilad Ben-Yossef, and Philippe Gerum Copyright © 2008 Karim Yaghmour and Jon Masters.
    [Show full text]
  • SPORK: a Summarization Pipeline for Online Repositories of Knowledge
    SPORK: A SUMMARIZATION PIPELINE FOR ONLINE REPOSITORIES OF KNOWLEDGE A Thesis presented to the Faculty of California Polytechnic State University San Luis Obispo In Partial Fulfillment of the Requirements for the Degree Master of Science in Computer Science by Steffen Lyngbaek June 2013 c 2013 Steffen Lyngbaek ALL RIGHTS RESERVED ii COMMITTEE MEMBERSHIP TITLE: SPORK: A Summarization Pipeline for Online Repositories of Knowledge AUTHOR: Steffen Lyngbaek DATE SUBMITTED: June 2013 COMMITTEE CHAIR: Professor Alexander Dekhtyar, Ph.D., De- parment of Computer Science COMMITTEE MEMBER: Professor Franz Kurfess, Ph.D., Depar- ment of Computer Science COMMITTEE MEMBER: Professor Foaad Khosmood, Ph.D., Depar- ment of Computer Science iii Abstract SPORK: A Summarization Pipeline for Online Repositories of Knowledge Steffen Lyngbaek The web 2.0 era has ushered an unprecedented amount of interactivity on the Internet resulting in a flood of user-generated content. This content is of- ten unstructured and comes in the form of blog posts and comment discussions. Users can no longer keep up with the amount of content available, which causes developers to start relying on natural language techniques to help mitigate the problem. Although many natural language processing techniques have been em- ployed for years, automatic text summarization, in particular, has recently gained traction. This research proposes a graph-based, extractive text summarization system called SPORK (Summarization Pipeline for Online Repositories of Knowl- edge). The goal of SPORK is to be able to identify important key topics presented in multi-document texts, such as online comment threads. While most other automatic summarization systems simply focus on finding the top sentences rep- resented in the text, SPORK separates the text into clusters, and identifies dif- ferent topics and opinions presented in the text.
    [Show full text]
  • Debian \ Amber \ Arco-Debian \ Arc-Live \ Aslinux \ Beatrix
    Debian \ Amber \ Arco-Debian \ Arc-Live \ ASLinux \ BeatriX \ BlackRhino \ BlankON \ Bluewall \ BOSS \ Canaima \ Clonezilla Live \ Conducit \ Corel \ Xandros \ DeadCD \ Olive \ DeMuDi \ \ 64Studio (64 Studio) \ DoudouLinux \ DRBL \ Elive \ Epidemic \ Estrella Roja \ Euronode \ GALPon MiniNo \ Gibraltar \ GNUGuitarINUX \ gnuLiNex \ \ Lihuen \ grml \ Guadalinex \ Impi \ Inquisitor \ Linux Mint Debian \ LliureX \ K-DEMar \ kademar \ Knoppix \ \ B2D \ \ Bioknoppix \ \ Damn Small Linux \ \ \ Hikarunix \ \ \ DSL-N \ \ \ Damn Vulnerable Linux \ \ Danix \ \ Feather \ \ INSERT \ \ Joatha \ \ Kaella \ \ Kanotix \ \ \ Auditor Security Linux \ \ \ Backtrack \ \ \ Parsix \ \ Kurumin \ \ \ Dizinha \ \ \ \ NeoDizinha \ \ \ \ Patinho Faminto \ \ \ Kalango \ \ \ Poseidon \ \ MAX \ \ Medialinux \ \ Mediainlinux \ \ ArtistX \ \ Morphix \ \ \ Aquamorph \ \ \ Dreamlinux \ \ \ Hiwix \ \ \ Hiweed \ \ \ \ Deepin \ \ \ ZoneCD \ \ Musix \ \ ParallelKnoppix \ \ Quantian \ \ Shabdix \ \ Symphony OS \ \ Whoppix \ \ WHAX \ LEAF \ Libranet \ Librassoc \ Lindows \ Linspire \ \ Freespire \ Liquid Lemur \ Matriux \ MEPIS \ SimplyMEPIS \ \ antiX \ \ \ Swift \ Metamorphose \ miniwoody \ Bonzai \ MoLinux \ \ Tirwal \ NepaLinux \ Nova \ Omoikane (Arma) \ OpenMediaVault \ OS2005 \ Maemo \ Meego Harmattan \ PelicanHPC \ Progeny \ Progress \ Proxmox \ PureOS \ Red Ribbon \ Resulinux \ Rxart \ SalineOS \ Semplice \ sidux \ aptosid \ \ siduction \ Skolelinux \ Snowlinux \ srvRX live \ Storm \ Tails \ ThinClientOS \ Trisquel \ Tuquito \ Ubuntu \ \ A/V \ \ AV \ \ Airinux \ \ Arabian
    [Show full text]
  • Media Center Oriented Linux Operating System
    Media Center oriented Linux Operating System Tudor MIU, Olivia STANESCU, Ana CONSTANTIN, Sorin LACRIŢEANU, Roxana GRIGORE, Domnina BURCA, Tudor CONSTANTINESCU, Alexandru RADOVICI University “Politehnica” of Bucharest Faculty of Engineering in Foreign Languages [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], , [email protected] Abstract: Nowadays there is a high demand of computer controller multimedia home systems. A great variety of computer software media center systems is available on the market, software which transforms an ordinary computer into a home media system. This means it adds some functionality to the normal computer. Our goal is to develop such a user-friendly intuitive system, dedicated for home media centers. In contrast with other proprietary approaches (Windows Media Center, Apple TV), we are building an entire operating system specialized on this. It is based on the Linux kernel, thus providing high portability and flexibility at a very low cost. The system is designed to work out of the box (plug it in and use it), needing zero configurations (no human configuration as much as possible) and no installation (Linux-live system, works from a CD, DVD or USB device). The user interface is not more complicated than a generic TV user interface. In this aim, the file system is hidden from the user, being replaced with an intuitive media library, the driver configurations is done automatically, network configuration is also handled without user actions (as much as possible). Key-words: OS, media center, Linux, multimedia, portable, intuitive, free, open-source 1.
    [Show full text]
  • Development of a Wireless Communication System for Swarm Intelligent Robots
    DEVELOPMENT OF A WIRELESS COMMUNICATION SYSTEM FOR SWARM INTELLIGENT ROBOTS Martina Russitano Lanza Internship Report submitted to the International Space University in partial fulfillment of the requirements of the M.Sc. Degree in Space Studies August, 2016 Internship Mentor: Prof. Kazuya Yoshida Host Institution: Tohoku University, Sendai, Japan ISU Academic Advisor: Prof. Hugh Hill ABSTRACT This report discusses the activities performed during the three-month internship at the Space Robotics Laboratory of Tohoku University, in Sendai (Japan), the internship being the final module of the International Space University’s Master of Space Studies program. The project, which envisaged the development of a wireless communication system for swarm intelligent robots based on the LTE technology, has been widely described in all its phases, from the Literature Review to the practical experience. A detailed description of all the hardware, procedures tested, trouble shooting methods and results obtained is also included. Due to the large number of problems encountered when trying to connect the LTE modem device, it was not possible to accomplish the task of building a real communication system. Nonetheless, possible reasons for all the issues occurred have been explained and motivated, and some recommendations for further studies have been stated. At the same time, a research concerning the next steps of the project has been carried out and a feasible method to establish a communication between different platforms has been analyzed and proposed. In addition to the main project, this report introduces also the activities of the Tohoku University Engineering Summer Program (TESP), to which I participated, as well as its positive outcomes.
    [Show full text]