University of Oulu

Auto-discovery system using visible light communication and Bluetooth low energy

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Author: Leikanger, Tore1
Organizations: 1University of Oulu, Faculty of Information Technology and Electrical Engineering, Electrical Engineering
Format: ebook
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 3.7 MB)
Pages: 77
Persistent link:
Language: English
Published: Oulu : T. Leikanger, 2021
Publish Date: 2021-06-22
Thesis type: Master's thesis (tech)
Tutor: Häkkinen, Juha
Reviewer: Häkkinen, Juha
Nissinen, Ilkka


This thesis describes the design of visible light communication system developed for localization purposes, in particular for auto-detection and service promotion. The design includes a LED-based transmitter and wearable receiver, capable of data broadcast transmissions over long enough distances to cover a small room. The receiver circuit is designed as a wearable device such, that the position of the receiver matches the person wearing it.

The implementation of the transmitter is done using a hybrid system including both HDL code for FPGA configuration, as well as firmware code for a processor. The device used for the transmitter design is a SoC including both the FPGA and the processor, connected through an AXI bus. The receiver is based on a micro-controller circuit featuring both a visible light communication circuit and Bluetooth functionality, capable of receiving the broadcasted data over visible light communication, as well as reporting the result of the processing of this data in the micro-controller. The wearable device is accompanied by an Android application, functioning as the user interface of the developed system.

Measurements verifying the functionality of the designed system, as well as revealing the benefits and drawbacks of different approaches described in the thesis are also shown. Also, loose thoughts about how the progression of the development of the design could evolve are also discussed based on the measurements and verification of the system functionality. Here it is revealed that the final goal of the described design is not a design build around commercial components, but rather the move toward ASIC design of both transmitter and receiver.

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Copyright information: © Tore Leikanger, 2021. This publication is copyrighted. You may download, display and print it for your own personal use. Commercial use is prohibited.