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Advisor(s)
Abstract(s)
Visible Light Communication (VLC) is a promising technology that can jointly be used to accomplish the typical lighting functionalities of the Light-Emitting Diodes (LEDs) and data transmission, where light intensity can be modulated on a high rate that cannot be noticed by the human eye. A VLC cooperative system that supports guidance services and uses an edge/fog based architecture for wayfinding services is presented. The dynamic navigation system is composed of several transmitters (luminaries) which send the map information and path messages required to wayfinding. Each luminaire for downlink transmission is equipped with one two type of controllers: mesh controller and cellular controllers to forward messages to other devices in the vicinity or to the central manager services. Data from the luminaires 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. Mobile optical receivers, collect the data, extracts theirs location to perform positioning and, concomitantly, the transmitted data from each transmitter. Uplink transmission is implemented and the best route to navigate through venue calculated. The results show 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.
Description
Este trabalho foi financiado pelo Concurso Anual para Projetos de Investigação, Desenvolvimento, Inovação e Criação Artística (IDI&CA) 2020 do Instituto Politécnico de Lisboa. Código de referência IPL/2020/GEO-LOC/ISEL
Keywords
Visible light communication Indoor navigation Bidirectional communication Wayfinding services Optical sensors Multiplexing/demultiplexing techniques
Citation
VIEIRA, Manuela; [et al] – Indoor self-localizationand wayfinding services using visible light communication: A model. In SENSORDEVICES 2021: The Twelfth International Conference on Sensor Device Technologies and Applications. Athens, Greece, IARIA, 2021. ISBN 978-1-61208-918-8. Pp. 67-72