LiFi Integrated to Power-lines for Smart Illumination cum Communication

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Description

LiFi Integrated to Power-lines for Smart Illumination cum Communication

ABSTRACT:

LiFi is a new paradigm for short-range wireless technology to provide unprecedented connectivity within a localized data-centric environment. Li-Fi is a transmission of data through illumination, sending data through a led light bulb that varies in intensity faster than the human eye can follow. This sort of communication can be called Visible light communication(VLC). Using this technique, the user can transmit the data through light from one device to another.  Li-Fi Integrated to Power-lines for Smart Illumination cum Communication.


LiFi Integrated to Power-lines for Smart Illumination cum Communication

EXISTING SYSTEM:

  • Radiofrequency communication
  • Microwave communication 
  • Infrared communication
  • Wired communication

Drawback: 

  • Li DAR works only in clear weather.
  • Li DAR is Costly.
  • Li DAR needs high processing machine  

PROPOSED SYSTEM:

  • Communication through visible light illumination
  • LED and photodetector used as transmitter and receiver
  •  uses unused EM spectrum
  • Can be used for underwater communication since attenuation is low

ADVANTAGE:

  • No interference on RF signal
  • Illumination  and  communication
  • Optical output is varied at extremely high speed
  • Unused electromagnetic spectrum 
  • Can be used in more environment
  • No health problems

BLOCK DIAGRAM:

LiFi Integrated to Power-lines for Smart Illumination cum Communication

 

LiFi Integrated to Power lines for Smart Illumination cum Communication
                                                          


LiFi Integrated to Power-lines for Smart Illumination cum Communication

EXPLANATION:

LiFi Integrated to Power-lines for Smart Illumination cum Communication. The vital part of the Visible light communication (VLC) system is LEDs, which send data by flashing light at speeds undetectable to the human eyes. LEDs are more advantageous than the existing incandescent bulbs and fluorescent tubes in terms of long life expectancy, high tolerance to humidity, low power consumption, and minimal heat generation lighting. There are several advantages of LiFi based on white LEDs for communications over WiFi and IR for indoor access:  LEDs are less expensive than laser sources used in IR.  LiFi system is cheap, durable, robust, secure, aesthetic & fashionable with untrammeled bandwidth opportunities.  The visible light occupies unregulated and unlicensed THz spectrum since it does not cause or suffer from any electromagnetic interference, whereas interference is common in using Wi-Fi or any other RF system.  Visible light communication does not have any possibility of leaking out when the light is isolated, which offers better security than wireless LAN, and does not suffer performance losses even when a variety of computers are connected at once. The shadowing effect is much less compared to the IR case because LED light fixtures are distributed throughout the room.


HARDWARE REQUIREMENTS:

  • Arduino
  • Li-Fi

SOFTWARE REQUIREMENTS:

  • Program: Arduino IDE
  • Program Language: Embedded c

APPLICATIONS:

  • Automobile  Applications
  • Hospital Application
  • Industrial application
  • Security Application

REFERENCE:

  1. Ji-Hun Yun, Geun-Bin Hong and Yong-kab Kim, “A Study on Realization of Visible Light Communication System for Power Line Communication Using 8-bit Microcontroller”, KSII Trans. Vol. 11, No. 5, pp. 238-241, October 25, 2010 
  2. T. Komine and M. Nakagawa, “Integrated System of White LED Visible Light Communication and Power-Line Comm.”, PIMRC2002, 
  3. T. Komine and M. Nakagawa, “Performance Evaluation of Narrowband OFDM on Integrated System of Power- Line Communication and Visible Light Wireless Communication”, IEEE2006. 
  4.  M. Kavehrad, Z. Hajjarian, and A. Enteshari, “Energy-Efficient Broadband Data Communications using White LEDs on Aircraft Power-lines”, 2008 IEEE. 
  5. S.E.Alavi, A.S.M.Supa’at, S.M.Idrus, S.K.Yusof, “New Integrated System of Visible Free Space Optic with PLC”, 3rd workshop on PLC, Oct 1-2, 2009, Udine, Italy

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