Imagine that in a place with lights, your mobile terminal can download (transfer) a high-definition movie (1GB) in less than 0.2 seconds, and you can enjoy various common networks such as making calls and surfing the Internet. Service, then you still miss WiFi or 4G network? The answer is obviously not! However, some friends will ask, is this "exaggerated" communication technology really there? The answer is certainly yes!
Recently, China's "Key Technology Research of Visible Light Communication System" has achieved a major breakthrough - the real-time communication rate of visible light communication has been increased to 50Gbps!
What about Visible Light Communication (VLC)? In fact, it is a communication method in which light in the visible light band is used as an information carrier, and a transmission medium of a wired channel such as an optical fiber is not required, and an optical signal is directly transmitted in the air. To put it simply, as long as there is a light on the top of the head, in theory, whether it is transmitting data information, surfing the Internet, making voice or video calls, or adjusting the switch of IoT devices, it can be easily realized, and with ultra-high transmission rate. The application experience far exceeds WiFi and 4G networks.
Visible light communication - will change your life
Tracing the history of visible light communication: the phone has just come out!
In fact, visible light communication is not an emerging concept that has emerged in recent years. Its history can be traced back to the era when the telephone was just born. On March 10, 1876, Alexander Graham Bell and his colleagues were known to the world for testing the world's first telephone, but in fact he had another great invention. The achievement is the photophone.
Ray-ray telephone for visible light communication
In 1880, Bell discovered an interesting way of playing: by adjusting the beam to transmit the voice signal, so that both sides of the wireless conversation can be carried out - this is the first time humans have realized wireless phones, using visible light communication. Unfortunately, the telephone was not popular at the time, and the light telephone was also considered to be difficult to achieve, and the practical value was not high.
In the 21st century, with the gradual popularization of LEDs , visible light communication has re-emerged and new breakthroughs have been made. So what is the relationship between visible light communication and LED? Next we will talk about the story behind them!
Realizing visible light communication is so simple! Amazing rate
Analyze visible light communication: it looks complicated
Why do you say that the popularity of led lights has made visible light communication rise again? Very simple, because LED (Light Emitting Diode, LED) lamps can support faster switching speeds than previous fluorescent and incandescent lamps. In this way, by adding a microchip to an ordinary LED lamp, the LED lamp can be flashed at an extremely fast speed, thereby transmitting data using the LED lamp.
LED and other communication schematics
Guide Rail Molded Case Integrator
Guide Rail Molded Case Integrator,Integrator With Rogowski Coil,Plastic Housing Integrator,Clip Rail Plastic Housing Integrator
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