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ThinkMind // SENSORDEVICES 2020, The Eleventh International Conference on Sensor Device Technologies and Applications // View article sensordevices_2020_1_60_20031
Geolocation and Wayfinding in Complex Buildings Using Visible Light Communication
 Authors:
Manuela Vieira
Manuel Augusto Vieira
Paula Louro
Pedro Vieira
Alessandro Fantoni Keywords: Visible Light Communication; Indoor navigation; Bidirectional Communication; Wayfinding; Optical sensors;Multiplexing/demultiplexing techniques Abstract:
This paper investigates the applicability of an intuitive wayfinding system in complex buildings using Visible Light Communication (VLC). Data from the sender is encoded, modulated and converted into light signals emitted by the transmitters. Tetra-chromatic white sources, located in ceiling landmarks, are used providing a different data channel for each chip. At the mobile receivers, the modulated light signals, containing the ID and the 3D geographical position of the transmitter and wayfinding information, is received by SiC photodetector with light filtering and demultiplexing properties. The effect of the location of the Access Points (APs) is evaluated and a model for the cellular networks is analyzed using orthogonal topologies. A 3D localization design, demonstrated by a prototype implementation, is presented. Uplink transmission is also implemented and the 3D best route to navigate calculated. The results showed that the system allows determining the position of a mobile target inside the network, to infer the travel direction along the time and to interact with information received optimizing the route towards the destination. Pages: 28 to 33 Copyright: Copyright (c) IARIA, 2020 Publication date: November 21, 2020 Published in: conference ISSN: 2308-3514 ISBN: 978-1-61208-820-4 Location: Valencia, Spain Dates: from November 21, 2020 to November 25, 2020
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