While you are still immersed in the joy of WiFi wireless Internet, I don't know that the new technological revolution has achieved a qualitative leap. Is it amazing that the new concept of light Internet has been put forward? Just a light, you can enjoy the Internet world, such a day is not far Rui!
Recently, researchers from the school of computer science and technology of Fudan University applied this achievement in the laboratory. They charge one LED with only one watt, and put four computers under the light so that the computers can access the Internet. At the same time, the speed of Internet access is very stable, reaching 150m.
How can a small LED light get online? This idea of using light to get online originally came from German scientists. He changed the signal from invisible to visible, and used light to realize digital transmission. This process is called lifi.
In fact, LED light is not like natural light, it is realized in the situation of high-frequency flicker. If this flicker is slowest, it can form 2 million flickers per second, which cannot be captured by the naked eye. The pulse formed by this flicker can realize the signal transmission. According to such a principle, in the future, people will no longer have to search for wireless signals on the Internet. As long as there is such a light source, they can access the Internet.
Lighting on the Internet has the advantages of low radiation and low energy consumption, which breaks the radiation interference brought by the traditional electromagnetic wave, and also avoids the high energy consumption of wireless routing in the deployment of hot spots. Of course, if lifi enters the common people's home, it may have to go through industrialization development, but at least it has a good start.
It is understood that the United States, Japan and Europe have similar research and development, and Fudan University's research results are also known as the world's fastest online lighting. Next month, 10 prototypes will appear at the Shanghai Industrial and commercial fair in 2013.
We can foresee that in the future, when we need to access the Internet, we will directly turn on the LED lights, and the cars will rely on the LED lights to 'talk' with each other. The passengers in the cabin of the aircraft will use the LED reading lights on their heads to access the Internet & hellip; & hellip;