Wednesday, February 1, 2012

Light Fidelity(Li-Fi) - achieve data transmission with LED lights!

University of Edinburgh, Professor Haas prediction: It may be in the near future, the lamp is used for wireless networks. In fact, the imaginative professor, has been achieved by ordinary light bulb data transmission, the potential speed of more than 10 megabits per second.

Haas put a small microchip to ordinary LED bulbs installed on the
light with signal transmission function. A little "light bulb wireless network" formed. As long as open the LED torches, you can connect he Internet. In a speech, Haas shows a use of LED lamps table lamps, to the receiver to the table and transfer data. As long as the hand into the beam, the video signal will be transmitted to the screen behind him, once the blocking signal will stop playing.

Haas will call this device "Light Fidelity" (referred to as Li-Fi), it can be used to transfer from the TV band "white space" wireless data or unused satellite signals, it can used in hospitals, airports , the army and even underwater. In theory, air passengers can take advantage of the light signals emitted inside the cabin surf.

Haas said that there are many limitations of radio waves, they are relatively rare, expensive and only a determined band. These limitations make it unable to keep up with the pace of wireless high-speed data transmission, affecting transmission efficiency. And just a part of the electromagnetic spectrum, visible spectrum of radio wave space is 10,000 times the world's light bulbs use 40 billion, with higher efficiency. "Any place where light is a potential data source in my view, the application prospects of this technology beyond our imagination, we need to do is to install
light fixtures for all potential micro-chips, lighting and data transmission will be linked together. "

With the earth 40 billion light bulbs, replace the existing base of millions of wireless signals, LED light bulbs can be turned into each network signal transmitter, energy efficient, environmentally friendly and convenient. As long as the light where there is network signal, controlling the era of light, so that wireless communication is more magical and wonderful.

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