LI-FI

Major Project

Transcript

1. LIGHT FIDELITY (LI-FI) Kunal Mehta Hirak Limbachiya VAD2015BTECHI-CSE1F006 VAD2015BTECHI-CSE1F001 Computer Science And Engineering ITM Vocational University, Vadodara, Gujarat, India.
2. CONTENTS • INTRODUCTION • HISTORY • CONSTRUCTION • LI-FI VS WI-FI • WORKING • GIGA SPEED TECHNOLOGIES • APPLICATIONS • FUTURE DEVELOPMENTS • CONCLUSION
3. ➢ Li-fi MEANS “LIGHT FIDELITY”. ➢ Li-fi IS FAST AND CHEAP OPTICAL VERSION OF WI-FI. ➢ Li-fi IS A TECHNOLOGY THAT USES THE LIGHT EMITTING DIODES (LED) TO TRANSMIT THE DATA WIRELESSLY. ➢ Li-fi BASED ON VISIBLE LIGHT COMMUNICATION (VLC). ➢ VLC IS A DATA COMMUNICATION MEDIUM, WHICH USES THE VISIBLE LIGHT BETWEEN 400 THz (780 nm) and 800 THz (375 nm) AS OPTICAL CARRIER FOR DATA TRANSMISSION. INTRODUCTION
4. ❖ This technology was invented by German Physicist “HARALD HASS”, from the university of Edinburgh, U.K. ❖ He demonstrated it in the year 2012. UNIVERSITY OF EDINBURGH: HISTORY
5. The Li-Fi product consists of three primary sub-assemblies: • Emitter (including bulb). • RF Driver. • Power supply. LIFI CONSTRUCTION
6. ➢ At the heart of LIFIis the bulb sub-assembly where a sealed bulb is embedded in a dielectric material. ➢ The dielectric material serves two purposes: 1) waveguide 2) Electric field FUNCTION OF THE BULB ASSEMBLY
7. RF DRIVER ➢ Power amplifier (PA) assembly that uses an LDMOS device. ➢ Converts electrical energy into RF power. ➢ The PA is designed for ruggedness and efficiency. ➢ The RF driver also contains controls circuit for digital and analog lighting controls.
8. Capacity Availabilit y Efficiency Security ISSUES REGARDING RADIO SPECTRUM
9. LI-FI VS WI-FI • Wi-Fi has a data transfer rate of maximum 54Mbps • Li-Fi has a High speed data transfer rate over 1Gbps.{1024 Mbps} • WIFI USES THE RADIOWAVE PORTION OF THE EM. • LI-FI USES THE VISBLE LIGHT PORTION OF THE EM.
10. WHY ONLY VLC? ➢ IR WAVES ARE HARMFUL FOR OUR EYES HENCE CAN’T BE USED. ➢ GAMMA RAYS ARE RADIOACTIVE AND ARE DANGEROUS. ➢ UV RAYS ARE HARMFUL FOR OUR SKIN AND CANNOT BE USED FOR LONG DURATION. ➢ X-RAYS ALSO HAS SIMILAR HEALTH ISSUES.
11. PARALLEL TO SERIAL DATA CONVERSION
12. WORKING
13. STEPS INVOLVED IN THE WORKING STEP-1 STEP-3 STEP-2
14. (a) GigaDock (b) GigaBeam (c) GigaShower (d) GigaMIMO GIGA-SPEED TECHNOLOGIES
15. CONTENT EXCHANGE THROUGH LI-FI
16. Capacity: ❖ 10000 times more spectrum than RADIO WAVES. ❖ Light boxes are already present, so infrastructure is available already and installed. Availability: ❖ Light is present everywhere. ❖ Data is present where light is present Efficiency: ❖ Highly efficient because LED consumes less energy ADVANTAGES OF LI-FI
17. ✓ RF Spectrum Relief ✓ Smart Lighting ✓ Mobile Connectivity ✓ Hazardous Environments ✓ Hospital & Healthcare ✓ Aviation ✓ Underwater Communications ✓ Vehicles & Transportation ✓ Location Based Services (LBS) APPLICATIONS Li-Fi has found its applications in many fields. Some of them are given below:
18. FUTURE DEVELOPMENTS ➢ The concept of Li-Fi is currently attracting a great deal of interest. ➢ Efficient alternative to radio-based wireless. ➢ Li-Fi is an emerging technology which is quick and reliable. ➢ Air waves are clogged so let’s use light waves. ➢ So lets proceed to LI FI for a brighter and greener future.
19. CONCLUSION ❖ The possibilities are numerous and can be explored further. ❖ If this technology can be put into practical use, every bulb can be used something like a Wi-Fi hotspot. ❖ we will proceed toward the cleaner, greener, safer and brighter future. ❖ This may solve issues such as the shortage of radio-frequency bandwidth. ❖ Allows internet where traditional radio based wireless isn’t allowed such as aircraft or hospitals.
20. REFERENCES ✓ http://en.wikipedia.org/wiki/Li-Fi ✓ seminarprojects.com/s/seminar-report-on-Li-Fi ✓ http://teleinfobd.blogspot.in/2012/01/what-is-lifi.html ✓ technopits.blogspot.comtechnology.cgap.org/2012/01/a-lifi-world ✓ www.lificonsortium.org ✓ the-gadgeteer.com/2011/08/LI-FI
21. ANY QUESTIONS?