IJARCCE ISSN (Online) 2278-1021

ISSN (Print) 2319 5940

International Journal of Advanced Research in Computer and Communication Engineering

ISO 3297:2007 Certified
Vol. 6, Issue 3, March 2017

Inter-Vehicle Communication Using Li-Fi

Technology
Muntazir Mohd Tali1, Aarti Patil2, Sushmita Chavan3, Prof. Shailesh Jadhav4
UG Student, Electronics and Telecommunication, Dhole Patil College of Engineering, Pune, India1, 2, 3
Assistant Professor, Electronics and Telecommunication, Dhole Patil College of Engineering, Pune, India 4

Abstract: Communication between vehicles, we present the blueprint and outcome of a small-scale mock-up using
light fidelity (Li-Fi) technology, a new technology that was founded in the last January 2010 to January 2012, which
still needs more organized inquiry on its sustainability for communication between vehicles.Inter-vehicle
communication is an effective method with productive results that we have used in order to communicate between two
vehicles and maintain safe distance between vehicles to prevent accedents. In Li-Fi technology, for communication
between two vehicle data is transmitted using bulb and at receiving end we use photo detector to receive the data. In
this technology there is no protocol used so it reduce the complexity. The aim of the paper is to design a module for
communication between vehicles and to maintain safe distance between vehicles to prevent accedents.

Keywords: Inter-vehicle communication, Visible Light Communication, Light Emitting Diode, Photodiode.

I. INTRODUCTION

In this paper we are presenting the communication

between vehicles using light as medium and maintain safe
distance between vehicles to avoid accedents.

Insimple terms, Li-Fi can be thought of as a light-based Fig1: Inter-Vehicle Communication Using Sonar Pulse
Wi-Fi. That is, it uses light alternative for radio waves to
transmit data. And instead of Wi-Fi system, Li-Fi would Various research works have been done in literature for
use LED lamps that can be used to light a room as well as vehicles to vehicles communication using an advantage of
transmit data.And at receiving end we use photodiode. light. As the frequency spectrum of light is large, it is
Since simple light bulbs are used to transmit the data favourable to be adopted in a limited-range wireless
hence provides more security. communication. In this project a system is developed in
order to build a cost effective yet inexpensive mechanism
This system is proposed for communication between for Inter-vehiclescommunication through the use of a
vehicles and maintains safe distance between vehicles. visual wireless communication medium, which is light. In
The line of sight between vehicles should be clear. fact, complex wireless networks and protocols can be
eliminated using LED.
II. OBJECTIVES
IV. METHODOLOGY
It is used to give different or add-on to existing wireless
technology .To reestablish high speed connection.Li-FI is Communication between Vehicles and calculation of
used because it is fast and secured version of Wi-Fi and is distance between vehicles is achieved by using Spread
very cheap as compare to Wi-Fi. Spectrum Technique and ultrasonic sensor. In this, a
vehicle (Vehicle-A) which is having ultrasonic sensor
III. WITHOUT WI-FI OR GPS gives the information about distance between target
vehicle (Vehicle-B). However, in this system,
Husain Fidvi [4] has proposed Vehicle to Vehicle communication between only two vehicles is done, we can
communication that does not need GPS or Wi-fi also design number of target Communication and ranging
connectivity.It was proposed to use programmable technologies for communication between vehicles by
interface controller (PIC) sonar which sends 40kHZ sound Using Spread Spectrum Technique.In this project we can
pulse that is not detected by human ears.The echo from the send messages to the receiving vehicle one by one
front vehicle is deteced by the microcontroller.The depending on condition.We are also using speakers for
distance between the vehicle is calculated by total time voice output and LCD to display message on both
taken by the sound signal to come back.This technology is transmitter and receiver side.We are also using ultrasonic
shown in fig 1 senser to keep safe distance between vehicles to avoid

Copyright to IJARCCE DOI10.17148/IJARCCE.2017.63186 791

 IJARCCE ISSN (Online) 2278-1021
ISSN (Print) 2319 5940

International Journal of Advanced Research in Computer and Communication Engineering

ISO 3297:2007 Certified
Vol. 6, Issue 3, March 2017

accidents.If the distance between vehicles is less then that A. Li-Fi Transmitter
of minimum distance then buzer will get turned on. It receives the information from the microcontroller
according to the condition and it converts the data to light
V. PROPOSED SYSTEM signal and transmits to the receiver section. The
transmitter part modulates the input signal with the
The propose plan of action for our project is inter-vehicles required time period and transmits the data in the form of
communication using optical wireless model having high 1‟s and 0‟s using a LED bulb. Modulation of light can not
data rates (in the range of MHz to GHz) and transmission be detected by human eyes making data secured .The
distances is near about 1m. For transmission of sending of data has been made possible by the use of LED
information from one device to another device required bulbs.These bulbs can be continously switched ON a OFF
LED. In this system at the transmitter section input data Very fast.Thus makes it possible to send data via light.
given using switching control system. According to the
data, the microcontroller generates a stream of 1s and 0s
thereby translate the data in binary. The output of this
controller is given to the LEDs which is connected to
transmitter side.Which turn ON and OFF at very high
speeds. This ON-OFF regulate the transmits of data
through light. LED is the selected for light source since it
consumes very less power when compared to fluorescent
lamp or a light bulb. It consumes very less power then that
of conventional method for lightning that is one-tenth of
the power required.Also, the lifespan of a typical LED
bulb is several tens of thousands of hours. LEDs also have
quick switching with good visibility. Thus, LEDs are the Fig 3: Li-Fi Transmitter.
best choice for transmitting the information. On receiver
section, photo diode is used such as silicon photo detector. B. Ultrasonic Sensor
The photo detector decodes the incoming received Ultrasonic sensors are characterized by their reliability and
information based on the sequence of 1s and 0s. Then the outstanding versatility.Ultrasonic sensors can be used to
decoded signal is given to output device such as LCD solve even the most complex task involving object
display or speaker. Thus Li-Fi network is confirmed detection or level measurement with millimeter precision
because their measuring method works reliably under
VI. SYSTEM ARCHITECTIRE almost all condition.It is based on measuring the properties
of sound wave with frequency above the human audiable
According to the condition, user will give the input to the range.Calculation of distance is given as
microcontroller using keypad switches.Microcontroller Distance = Speed of sound*Time taken/2
will convert the input into ASCII & then the ASCII value Speed of sound in air 344m/s
is given to output pins of microcontoller on which Li-Fi
transmitter is connected.Li-Fi converts ASCII value into
visible light spectrum. Now at the receiver side, Li-Fi
receiver will receive the message sent by LED (continious
0’s and 1’s) and decode the information and gives it to the
output unit LED and speaker
Fig 4: Ultrasonic Sensor.

C. Li-Fi Receiver
It receives the modulated signal send by Li-Fi transmitter
and demodulates the signal to recover the original
signal.The receiver part detects these flashes using
photodiode and then sends demodulated signal to
microcontroller.

Fig. 2: Block Diagram of Inter-Vehicle Communication

Using Li-Fi

The functionality and use of each block of the system is

explained below Fig 5: Photodiode.

Copyright to IJARCCE DOI10.17148/IJARCCE.2017.63186 792

 IJARCCE ISSN (Online) 2278-1021
ISSN (Print) 2319 5940

International Journal of Advanced Research in Computer and Communication Engineering

ISO 3297:2007 Certified
Vol. 6, Issue 3, March 2017

D. APR Module B. Information of Rash Driving

ARP is a single chip voice recording and playback device
for 20 to 30 seconds voice recording and playback.It is an
ideal IC for automatic answering macchine.This IC has
data storage capacity and requires no software and
microcontroller.It provides high quality voice recording
and palyback upto 30 seconds .This IC requires minimum
components to create a voice recorder.The IC has non-
volatile flash memory technology with 100k recording
cycles and 100 years message retention capacity.The LED
glows when the IC records the voice obtained through the
mic.The IC remain in the recording mode as long as RecL
pin is grounded.By pressing the playback switch the play
mode starts from the beginning of the message.The input
section will be muted during playback. Fig 8: LCD Displaying Rash Driving

IX. CONCLUSION

We have presented an Inter-Vehicle Communication

system consisting of a Li-Fi transmitter and receiver that is
targeted at communication between vehicles, Li-Fi can be
used to communicate with the LED lights of the cars and
number of accidents can be prevented. Li-fi is ideal for
high density coverage in a restricted region.It is believed
that the technology can yield a speed more than 10Gbps.It
is the fastest and cheapest wireless communication
systems which is suitable for communication.Li-Fi will
Fig 6: ARP Experimental Board make all our lives more technology driven in the near
future.
VII. RESULT
REFERENCES
Li-Fi Transmitter and Receiver module
[1] S.Vicky,”Li-Fi The Best Alternative To Overcome The Existing
Technologies” Vol. 2, Issue 2, pp: (208-212), Month: April-June
2014
[2] Shubham Chatterjee,”Scope and Challenges in Light Fidelity(LiFi)
Technology in Wireless Data Communication “Issue 6, Volume 2
(June 2015)
[3] Shaista Tarannum,”Data Transmission Through Smart Illumination
Via “Visible Light Communication Technology” Volume 4, Issue
2 (March-April, 2016), PP. 136-141
[4] N. M. Husain Fidvi, “Car to Car Communication System,” source:
car communication system
[5] M.Chinnadurai,“Smart LI-FI Based Car Parking System.
”Volume:03,Issue 02 2016
[6] http://caledonianmercury.com/the-futures-bright-the-futures-li-fi
[7] http://www.lifi-centre.com/about-li-fi/applications

A. Information of Fuel Leakage

Fig 7: LCD Displaying Fuel Leakage.

Copyright to IJARCCE DOI10.17148/IJARCCE.2017.63186 793