Simple implementation of lifi system

1. LI-FI TECHNOLOGY

2. CONTENTS
• INTRODUCTION
• SCOPE OF THE PROJECT
• ADVANTAGES
• APLLICATIONS
• FUTURE SCOPE
• CONCLUSION

3. INTRODUCTION
1)LI-FI is transmission of data through illumination, Sending data through LED light
bulb that varies in intensity farther than human eye can follow.
-German physicist, Dr.Harald Hass
2) It allows wireless communication without the use of radio waves, which can be
dangerous in places like oil platforms, underwater and on planes ж Li-Fi can be
thought of as a light-based Wi-Fi.

4. CIRCUITS
A)TRANSMITTER
CIRCUIT

5. RECEIVER
CIRCUIT

6. PRINCIPLE OF LI-FI
TECHNOLOGY
• Heart of Li-Fi technology is high brightness LED‟s.
• The LED bulb will hold a micro-chip that will do the job of processing the data.
• The on-off activity of LEDs enables a kind of data transmission using binary codes.
• Switching on an LED is a logical „1‟;switching it off is a logical „0‟.
• A light sensitive device (photo detector) receives the signal and converts it back
into original data.

7. ADVANTAGES
1.Capacity
2.Availability
3.Efficient
4.High security
5.Ease to use
6.Fast data Transfer
7.Harmlessness
8.Low cost

8. APPLICATIONS
• Education systems
• Medical Applications
• Cheaper Internet in Aircrafts
• Mobile Connectivity
• Traffic management
• Applications in sensitive areas
• Disaster management
• Replacement for other technologies

9. FUTURE SCOPE
Future Scope: As light is everywhere and free to use, there is a great scope for the
use and evolution of Li-Fi technology. If this technology becomes mature, each Li-Fi
bulb can be used to transmit wireless data. As the Li-Fi technology becomes
popular, it will lead to a cleaner, greener, safer communications and have a bright
future and environment.
Li-Fi Roadmap: Li-Fi Roadmap (location Based Service) or Broadcast solutions are
commercially available. The next step could be a Li-Fi WLAN for B2B market with
high added value on specific business cases and could grow towards mass market.
In the long term, the Li-Fi could become an alternative solution to radio for wireless
high data rate room connectivity and new adapted service, such as augmented or
virtual reality.

10. CONCLUSION
The possibilities are numerous and can be explored further. If this technology
Can be put it into practical use. Every bulb can be used as source of light which can
be used in li -fi technology.