Since the 1990s, LEDs have entered the public eye as the fourth generation of light sources, and have had a huge impact on traditional lighting. Liang Rongqing, director of the Institute of Electric Light Sources at Fudan University, said that due to the innate nature of technology, the emergence of LEDs has made the lighting industry experience a very important period. In the past, the light source was a relatively closed concept. It was basically composed of a power supply system plus a light bulb and a light distribution device. The modern light source has a more open connotation. It can be integrated with different industries to achieve intelligence. Personalized lighting. The innovation of new light source technology has brought lighting into a new era, which has a major impact on culture and economic and social development. LED pushes fine lighting Traditional lighting belongs to basic lighting. Once the light source is fixed, the emitted light is constant. Intelligent lighting is an extension of basic lighting, which can change the parameters of light by regulation. If the previous lighting was extensive, it has now entered the era of fine lighting. Liang Rongqing believes that digitalization is the basis of intelligent lighting. It includes two aspects: one is the exploration of digital communication technology, and the other is the technical characteristics of LED itself. Among them, the easy-to-control characteristics of LEDs fully meet the requirements of intelligent lighting. The LED has a wide adjustment range, which can be continuously adjusted and responded quickly. The upstream companies in the industrial chain can make different spectrum chips, and later add more abundant colors. In fact, in the 1980s, experts proposed intelligent control of gas discharge lamps, but the characteristics of gas discharge devices determined that it was technically difficult to achieve control. It can be said that thanks to the characteristics of the LED light source itself, the brilliant future of intelligent lighting has been achieved. However, although the development of digital technology has made LED intelligent control more abundant and easy, how to make lighting more digital and intelligent has also faced some problems. Smart lighting is not like the extensive lighting in the past. You can use a light bulb to connect it. Smart lighting is a system solution. This system needs to be compatible and interchangeable. Different lighting schemes are used in different light environments. Different. There must be some inherent logic between lighting schemes. Liang Rongqing said. In English, smart lighting is called smartlighting, but the opposite is true because smart lighting is very complex and requires human manipulation. In Liang Rongqing's view, the real intelligent lighting is that people do not interfere too much, it can provide the best lighting according to user needs, that is to say, intelligent lighting must be adaptive and self-adjusting. Intelligent lighting presents three characteristics that refer to intelligent lighting. The first thing that people think of is energy saving. The LED luminous efficiency is as high as 200 lumens per watt, and the power saving effect is very obvious. More importantly, the energy-saving effect of smart lighting due to regulation is also not to be underestimated. For example, Liang Rongqing said that in an office building, the light near the window is brighter, and the distance from the window is slightly darker. The light distribution in the building is different depending on the weather conditions and the seasons. But for the staff in the building, the light needed is constant. Intelligent lighting can sense the light intensity at different positions in the room through the sensor, so that the brightness of the light near the window is weaker, and the brightness of the light on the inner side is stronger, so that the brightness of the whole room can be kept consistent. Taking full advantage of external natural light, intelligent lighting invisibly saves electricity. Lighting electricity accounts for about 12-13 of the total electricity consumption of the whole society. Some experts predict that if smart lighting is used instead of traditional lighting, energy saving 50 can be realized, which is of great significance for reducing energy consumption and building a conservation-oriented society. Second, smart lighting can provide healthy and comfortable lighting effects. Different light sources have an impact on human physiology and psychology, and LEDs can precisely adjust the color temperature, color rendering, intensity, distribution and other parameters of light. Liang Rongqing said that when pilots perform long-time missions, their mental state is very different under different lighting conditions. Now using LED light source, you can call up a pair of light formulas to match the best lighting environment for pilots, so that they can maintain the most sober state of mind and improve flight safety. In addition, LED lighting can mimic the sun's trajectory, allowing indoor lighting to be close to natural light, enabling people who work indoors in ships, mines, etc. to obtain natural light and avoid diseases such as depression. Third, intelligent lighting is easy to manage and helps to improve the efficiency of transportation management. Liang Rongqing used street lights as an example. There are tens of millions of street lights in the country, and the number of people responsible for maintenance management is very limited. If smart lighting is adopted, fixed-point management can be realized. When the street lamp is broken, the real-time feedback is sent to the control center, and the targeted maintenance is carried out, which greatly improves the operation and maintenance management efficiency. As a new generation of light source, LED is applied to lighting, which makes the illumination appear infinite possibilities, and also makes personalized lighting and customized demand lighting become a reality. Of course, all this is due to the characteristics of the LED itself.