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Dissertation
Comparative study of positioning algorithms in wireless sensor networks
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Year: 2013 Publisher: Gent : s.n.,

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Abstract

Global Positioning System (GPS) is het meest gekend, en een volwaardige oplossing voor plaatsbepaling buitenshuis. Dit systeem biedt echter geen oplossing voor plaatsbepaling binnenshuis. In deze thesis wordt een oplossing voor dit probleem aangeboden en getest in de praktijk.Er wordt gebruik gemaakt van een draadloos sensornetwerk om de positie te bepalen. De opstelling bestaat uit vaste referentienodes die hun positie kennen en een mobiele node waarvan de positie bepaald wordt. Bij het zenden van referentienode naar de mobiele node ontstaat er een verzwakking, welke gemeten wordt in de mobiele node aan de hand van de Received Signal Strength Indicator (RSSI).De RSSI kan opgemeten worden in functie van de afstand, welke een logaritmisch verband oplevert. Aan elke gemeten RSSI kan er dus een afstand gekoppeld worden.Met de berekende afstanden tussen de mobiele node en de referentienodes kan, in combinatie met een algoritme, de positie van de mobiele node bepaald worden.In deze thesis worden de algoritmes Multilateratie, Maximum Likelihood en MinMax getest en bestudeerd. Deze worden nadien op een originele manier, aan de hand van cumulatieve distributiefuncties, met elkaar vergeleken.Geen metingen zonder hardware, waarbij er in het eerste deel dan ook besproken wordt welke stappen ondergaan zijn om de hardware op punt te stellen. Global Positioning System is the most known, and complete solution for outdoor localisation. However, this system isn't a solution for indoor localisation. In this thesis, a solution to this problem is presented and tested in practice.We make use of a wireless sensor network in order to determine the position. The setup consists of fixed reference nodes that know their position, and a mobile node whose position is determined. During the transmission of reference node to the mobile node a transmission loss is created, which is measured in the mobile node by means of the Received Signal Strength Indicator (RSSI).The RSSI can be measured as a function of the distance, which produces a logarithmic relationship. Now each measured RSSI can be coupled to a distance.Using the calculated distances between the mobile node and the reference nodes, the mobile node's position can be determined in combination with an algorithm.In this thesis, the algorithms Multilateration, Maximum Likelihood and MinMax are tested and studied. These are then in an original way, on the basis of cumulative distribution functions, compared with each other.No measurements without hardware, which is also discussed in the first part. Hereby the steps to make the hardware up and running are also described.


Book
Getting started with the MSP430 launchpad
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ISBN: 1299474349 0124116000 0124115888 9780124116009 9780124115880 9781299474345 Year: 2013 Publisher: Amsterdam ; Boston : Elsevier/Newnes,

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Abstract

This book explores the world of microcontroller development through friendly lessons and progressively challenging projects, which will have you blink LEDs, make music with buzzers & interact with different sensors like accelerometers and temperature sensors. This book is focused on the MSP-EXP430G2 LaunchPad Evaluation Kit, which is a complete microcontroller development platform that includes everything you need to start creating microcontroller-based projects. Many of the 25+ projects will also leverage external components, such as the highly-integrated Educational BoosterPack, which is


Book
MSP430-based robot applications : a guide to developing embedded systems
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ISBN: 1299224350 0123972965 0123970121 9780123972965 9780123970121 Year: 2013 Publisher: Waltham, Mass. : Elsevier,

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This book provides a careful explanation of the basic areas of electronics and computer architecture, along with lots of examples, to demonstrate the interface, sensor design, programming and microcontroller peripheral setup necessary for embedded systems development. With no need for mechanical knowledge of robots, the book starts by demonstrating how to modify a simple radio-controlled car to create a basic robot. The fundamental electronics of the MSP430 are described, along with programming details in both C and assembly language, and full explanations of ports, timing, and data acquisi

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