SHOOLINI UNIVERSITYSOLAN

PRESENTATIONBY

VENKATESHME(AUTO) 4th SEM

Guide: Bhaskar Goel sir

YEAR-2014

“Light Fidelity”.

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o LI-FI is transmission of data through illumination

o Sending data through a LED light bulb that varies in intensity faster than human eye can follow..

WHAT IS LI-FI ?

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HISTORYo The technology truly began during the 1990's in countries like Germany, Korea, and Japan where they discovered LED's could be retrofitted to send information. 

o Dr. Harald Haas continues to wow the world with the potential to use light for communication.

Dr. Harald Haas

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Radio Waves

Infrared Rays

Visible

Rays

Ultraviolet

Rays

X- Rays

Gama Rays

WHY ONLY LIGHT SOURCE ?

o Gama rays cant be used as they could be dangerous.o X-rays have similar health issues.o Ultraviolet light is good for place without people, but other wise dangerous for the human body.o Infrared, due to eye safety regulation, can only be used with low power.

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1.4 Million 5 Billion

PRESENT SCENARIO

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REMOTE CONTROLInfrared Rays

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LI FIVisible Rays

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LED

Radio Waves

Infrared Rays

Visible

Rays

Ultraviolet Ray

s

X- Rays

Gama Rays

ELECTROMAGNETIC SPECTRUM

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WORKING PROCESSS

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Transmitting Element

Receiving Element

(Detector)LEDAvalanche Photo Diode

Image Sensor

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Giga Shower

Giga Memo

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DIFFERENCE BETWEEN THE

TECHNOLOGIES

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APPLICATIONSo In Office, Home,

Schools..

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oIn Aircraft Cabins…

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o In RF Restricted Environments

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o In Traffic Lighting..

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o In Hospitals (In Few Medical Instruments)

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o In Street Lamps (As free access points)

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o Li-Fi can even work underwater were Wi-Fi fails completely, there by throwing open endless opportunities for military/navigation operations.

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o Capacity

o Availability

o Efficiency

o Easy To Use

o Fast Data Transfer

o Harmlessness

o Low-cost

o It will reduce your electricity bill and maintenance bill.

ADVANTAGES

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o If this technology can be put into practical use, every bulb can be used something like a Wi-Fi hotspot to transmit wireless data and we will proceed toward the cleaner, greener, safer and brighter future.

CONCLUSION

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ANY QUERIES……..

?

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