God said: "There is light," and humans can connect to the Internet. Its name is "LiFi". Visible light communication has been highly anticipated since its birth. Life is "not a day without light". In addition to meeting the basic functions of lighting, if sunlight is used as solar energy, lighting can also be used to access the Internet. It is the best use of it. Last year, there were reports that China's "Key Technology Research of Visible Light Communication System" has achieved a major breakthrough in testing and certification by the Ministry of Industry and Information Technology. This time, the real-time communication rate is increased to 50 Gbps (bits per second), which is equivalent to 0.2 seconds to download one. HD movie. As a typical military-civilian dual-use technology, the application prospect of visible light communication is broad. According to the optimistic forecast of the "2014 European Visible Light Communication Organization Market Research Report", its industrial growth rate can reach 84.9%, and the output value in 2018 is about 17.8 billion US dollars, 2022. The annual output value can reach about 200 billion US dollars. It is understood that the Guangdong Province Semiconductor Light Source Industry Association's "Guangdong Province visible light communication and standard optical components industry technology road map (2015-2019) preparation" has been highly valued by the Guangdong Provincial Department of Science and Technology. In order to guide the future development of the technical map of the visible light communication industry in Guangdong Province, and actively promote the development of visible light communication technology and industry in Guangdong Province. On January 16, an expert seminar on the development of the technical roadmap for visible light communication industry in Guangdong Province was held in Guangzhou. At the seminar on the same day, Zhang Jian, executive deputy director and professor of the visible light communication laboratory of the Information Engineering University of the People's Liberation Army, detailed the application status of visible light communication and its industrialization prospects. Visible light communication high speed transmission prototype Foreign application conversion overview According to Professor Zhang Jian, in the 10 years since 1990, Japan has been relatively active in the field of indoor positioning, outdoor space communication, and car networking. Since 2010, East Asia, Europe, and the United States have successively applied application demonstrations and partial application transformations. In 2008, the European Union set up the Family Gigabit Access Program (OMEGA) to build a home area broadband communication network, integrate VLC technology, and achieve a communication rate of Gbps. In the same year, the National Science Foundation (NSF) established a visible light communication research center and plans to develop an intelligent wireless lighting architecture for LED wireless communication within 10 years. France National Love uses Philips LED indoor positioning lighting system It is reported that the light-visible communication system of the lighthouse developed in Japan has a communication speed of 1022 bps and a communication distance of 2 km. Low-altitude visible-light balloon satellites for emergency rapid deployment are currently being developed. In 2013, the Japanese LAMPSERVE LED street light was put into practical test, the communication speed reached 100Mbps, and the distance was about 200 meters. In 2014, Japan TAKAYA developed a vehicle-to-vehicle visible light communication system with a speed of 10 Mbps, an LED array at the transmitting end, and an image sensor at the receiving end. In May of the same year, Japan's Toyo Electric developed an underwater visible high-speed communication device with a peak of 50 Mbps. US retail giant Target installs VLC positioning navigation system In addition, the UK's pure LiFi for medical institutions' Li-Fi devices is currently in volume production and delivery. The French Oledcomm visible light communication system has also been put into commercial operation, providing visible light communication technology for homes and businesses. As of April 2015, US retail giant Target installed VLC positioning navigation system in its store. In May, France's largest retailer, Carrefour, used the Philips VLC-LED luminaire to activate the indoor visible light navigation system at a large Lille store. In October, Japan hosted the "Japan Visible Light Communication International Conference and Exhibition", and Matsushita launched the "Optical ID Service Solution", the "LED Lighting Technology for Connecting Physical and Information" developed by Fujitsu, and the reality enhancement. In November, Estonia's Velmenni demonstrated a Li-Fi prototype bulb in Tallin with a data transfer speed of 1 Gbps; under laboratory conditions, the recorded Li-Fi bulb has a data transfer rate of 224 Gbps.
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