LED promotes fine lighting and intelligent lighting presents three characteristics1

Since the 1990s S, LED, as the fourth generation light source, has entered the public view and has had a great impact on traditional lighting. Liang Rongqing, director of the Institute of Electric light sources at Fudan University, said that due to the inherent characteristics of technology, the emergence of LED has made the lighting industry experience a very important period. In the past, light source was a relatively closed concept, basically consisting of a set of power supply system plus bulbs and light distribution devices, while the connotation of modern light source is more open. it can integrate with different industries across borders to realize intelligent and personalized lighting. The innovation of new light source technology has brought lighting into a new era, which will have a significant impact on cultural and economic and social development. LED promotes fine lighting. Traditional lighting belongs to basic lighting. Once the light source is fixed, the light emitted is constant. However, intelligent lighting is an extension of basic lighting, which can change the parameters of light through regulation and control. If the previous lighting was extensive, it has now entered the era of refined lighting. Liang Rongqing believes that digitalization is the foundation of intelligent lighting, which includes two aspects: one is the excavation of digital communication technology, and the other is the technical characteristics of LED itself. Among them, LED's easy-to-control characteristics fully meet the requirements of intelligent lighting. The LED has a wide adjustment range, can be continuously adjusted, and can respond quickly. The upstream enterprises of the industrial chain can make different spectral chips, and then deploy more colorful light in the later stage. In fact, in the 1980s S, some experts proposed to carry out intelligent control of gas discharge lamps, but the characteristics of gas discharge devices determine that it is difficult to realize control technically. It can be said that thanks to the characteristics of LED light source itself, intelligent lighting has achieved today's glory. However, although the development of digital technology makes LED intelligent control richer and easier, how to make lighting more digital and intelligent is also facing some problems. Intelligent lighting is not like extensive lighting in the past. It can be used when a light bulb is connected. Intelligent lighting is a system solution. This system should be compatible and interchangeable. different lighting schemes are adopted in different light environments, and there must be certain internal logic standards between different lighting schemes. Liang Rongqing said. In English, intelligent lighting is called smartlighting (Smart lighting) However, the current situation is just the opposite, because intelligent lighting is very complicated and requires human manipulation. In Liang Rongqing's view, the real intelligent lighting is that people should not intervene too much, it can provide good lighting according to the needs of users, that is to say, intelligent lighting must realize self-adaptation and self-adjustment. Intelligent lighting has three characteristics. When it comes to intelligent lighting, the first thing that comes to our mind is energy saving. The luminous efficiency of LED is as high as 200 lumens per watt, and the power saving effect is indeed very obvious. More importantly, the energy-saving effect of intelligent lighting due to regulation should not be underestimated. For example, Liang Rongqing said that in the office building, the light near the window is brighter, and it is slightly darker from the window. The light distribution in the building is different depending on the weather conditions and seasons. But for the employees in the building, the light needed is constant. Intelligent lighting can sense the light intensity at different positions in the room through sensors, so that the brightness of the light near the window is weaker, and the brightness of the light on the inside side is stronger, in this way, the lighting brightness of the whole room can be kept consistent. Making full use of external natural light, intelligent lighting virtually saves electricity. Lighting electricity accounts for about 12 of the total electricity consumption of the whole society13. Some experts predict that if intelligent lighting is used instead of traditional lighting, electricity saving 50 can be realized, which is of great significance for reducing energy consumption and building a conservation-oriented society. Secondly, intelligent lighting can provide healthy and comfortable lighting effects. Different light sources will affect people's physiology and psychology, and LED can precisely adjust the color temperature, color rendering, intensity, distribution and other parameters of light. Liang Rongqing said that when the pilot performs a long-term flight mission, his psychological state is very different under different lighting. Now the LED light source can be used to bring up a light formula, which is equipped with a good lighting environment for pilots, so that they can keep awake at all times and improve flight safety. In addition, LED lighting can imitate the Sun's trajectory, so that indoor lighting is almost close to natural light, so that people who work indoors in ships, mines, etc. for a long time can obtain natural light and avoid diseases such as depression. Third, intelligent lighting is convenient for management and helps to improve the efficiency of transportation management. Liang Rongqing used street lamps as an example. There are tens of millions of street lamps in the country, and the personnel responsible for maintenance and management are very limited. If intelligent lighting is adopted, fixed-point management can be realized, and any street lamp that is broken can be fed back to the control center in real time for targeted maintenance, thus greatly improving the efficiency of operation and maintenance management. As a new generation of light source, LED is applied to lighting, which makes lighting show infinite possibilities, and also makes personalized lighting and customized lighting become a reality. Of course, all this is due to the characteristics of LED itself.