Application of led lights in communication
By implanting a chip in the LED light, the LED light becomes a wireless hotspot, which uses fast light pulses, wireless transmission, and binary coding to achieve the purpose of communication. This new technology that uses LED visible light to replace electromagnetic waves to transmit data is called LiFi. Bell, the founder of communication technology and the inventor of telegraph, once imagined using visible light as a medium to realize communication. At that time, the technology could neither produce a useful optical carrier nor transmit light from one place to another. The LED lamp has a high modulation rate, the human eye cannot feel the light flicker, and with the help of new technology, the LED lamp can already transmit data 5 meters away, LiFi has become feasible.
Compared with WiFi, LiFi lights can reach a data transmission rate of 10Gbps (100 times the rate of 4G), and visible light cannot pass through walls. Home Internet access will become safer. In the field of precise positioning, LiFi also shows its advantages. Proponents believe that LiFi technology has the basis for replacing WiFi. However, some people believe that although the substitution effect of LiFi exists, the use of visible light as a communication carrier still has certain limitations. In the future, LiFi may complement and coexist with WiFi and be applied to smart cities. Visible light communication will become a fusion agent for indoor information networks in the future. It can not only provide valuable spectrum resources for the integration of three networks and even the integration of N networks, but also maximize the convenience, broadband, green, energy-saving, and security advantages of this technology. .
