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Universitatea Tehnica "Gh.Asachi" Iasi - Fac. Automation and Computer
Embedded Computer 		Miercuri, 10 Feb., Ora 10:45
Experiment Nr.7
  • L7.1 Name

    • Infineon XMC4500 - LiFi demo



  • L7.2 Goal

    • The experiment aims at an introductory approach to the LiFi universe aiming at an example of communication between systems using light as a carrier. The VLC universe is introduced as well as the trends in some universities to create a new universe capable of integrating light as a major communications factor. The DAVE components for the XMC4500 (ARM Cortex M4) are explored, which allow the realization of asynchronous or Manchester-type serial communications that can be integrated in the future of computer networks . At the end of the laboratory, detailed information will be available on how to use LED - photoreceptor optical components for data transmission.

    Harald Haas speech - LiFi
    .

  • L7.3 Resources


    • Hardware: XMC4500 platform relax kit, Photoresistor + amplifier, LED, USB-RS232 converter, 12V DC source.
    Software: DAVE4.3.2 development environment;




  • L7.4 Prototype program


    • U-character continuous transmission program ---------- Video sequence



  • L7.5 Laboratory mode

    • Visible light data communications are a recent trend to develop an alternative standard to WiFi using visible or infrared spectrum as information carriers. Current technologies allow the development of appropriate communication interfaces that have the following advantages:
    - ensures a data transfer rate well over 5G;
    - does not use electromagnetic radiation that can affect the cells of living organisms;
    - requires low energy consumption;
    - allow the development of local networks ideal for groups indoors;
    - they allow the realization of some communication networks over the lighting systems
    - they allow the extension of the classic WiFi networks with LiFi components;
    - high-performance LED resources are available for lighting;

    The laboratory experiment uses an XMC4500 platform with optical extension that communicates through light with a PC equipped with a USB-RS232 converter according to the figure below.

    It explores the communication interfaces of the XMC4500 relax kit development platform provided with Cortex M4 processor;

  • Explore DAVE resources for Manchester communications that can increase the speed of data transmission over optical channels.



  • The transmission scheme is replicated, aiming to increase the speed.

  • Exploring VLC - applications and architecture ... research opportunities;
  • The proposed problems are solved.

  • L7.6 Proposed problems

    • 1. Make an optical extension using LED + phototransistor .;
    2. Create the prototype program using a blue LED for the transmission;
    3. Highlight the way data is transmitted using Manchester code; 4. Create a data transmission system using LEDs for lighting;
    5. Develop a light-activating IoT device;


  • L7.7 The laboratory may be extended to:

  • L7.8 Collateral information
    • © 2020 Fl. Pantilimonescu & A. Stan - Technical University Iasi, Romania