LED technology energy-saving intelligent trend and challenges

LED lighting has the advantages of energy saving, environmental protection, longevity, earthquake resistance, small size and fast response. At present, the LED application field mainly includes three major markets: backlight, general lighting and automotive lighting. As the price of LED lights declines, comfort and safety become the technical direction of semiconductor lighting. In addition, semiconductor lighting will open the era of intelligent lighting. Intelligent lighting has the functions of brightness adjustment, color temperature adjustment, soft start of light, timing control, scene setting, etc., and achieves the requirements of individuality, comfort, secondary energy saving, safety and efficiency. I. Opportunities and Challenges LED lighting has many outstanding advantages: energy saving - DC drive, electro-optical power conversion is close to 100%, the same lighting effect is more than 80% energy saving than traditional light source; long life - service life can reach 60,000 ~ 100,000 Hour, more than 10 times longer than the traditional light source; more color changes - using the three primary colors of red, green, and blue, under the control of computer technology, the three colors have 256 gray levels and can be mixed arbitrarily, which can produce 256 × 256 × 256-16777216 colors; environmental protection - no heat, no radiation, small glare, recyclable, no mercury, cold light source, safe touch; high-tech - low-voltage microelectronics, computer technology, network communication Technology, image processing technology, embedded control technology, etc., are digital information products of semiconductor optoelectronic devices, with online programming, unlimited upgrades, flexible and changeable features. The price of LED lighting is relatively higher than that of traditional light sources, which has become one of the obstacles for LEDs to enter the market. In addition, overcapacity has also led to fierce competition in the LED market. The key driver for the development of the LED lighting market is the emergence of high-brightness LEDs and smart LED controllers. Product designers using high-brightness LEDs face many design challenges, including thermal management, drive solutions, topology, and infrastructure. Second, the market trend As far as the current level of industry development, LED lighting has not enough capacity to break the traditional lighting concept, still stay on the replacement route; and in the alternative route, LED lighting must also rely on government policy guidelines. That is to say, although some of the LED lighting has developed to a sufficient degree of maturity, it is still at a preliminary stage of the initial stage relative to the entire market. 1. With the continuous improvement of LED lighting technology, LED is gradually being used in the field of automotive lighting. LED R&D vendors for automotive applications are highly motivated, and LEDs do attract the automotive market with its uniqueness. I.ED light source has many advantages in automotive applications: low energy consumption, long life, various forms, high recognition, good impact resistance, easy layout and design, fast response, high brightness, and low brightness degradation. Halogen lamp, low-voltage DC can drive LED, small load, weak interference, low requirements on the use environment. These factors are obviously beneficial to energy conservation and driving safety. LED lights are spreading towards civilian models. For the more demanding headlights, it will also become popular with the increase of LED brightness and the gradual decline of price. Intelligent applications are also a potential advantage of LEDs. Future LED lighting is not about bringing higher light efficiency, but better light. In the car, intelligent lighting is a popular trend in the future, such as adjusting the brightness of the light as needed, and automatically adjusting the interior lighting with external light. Cars that use LED lighting are not just growing in markets such as Europe. In China, new energy vehicles have entered the 12th Five-Year Plan of China, which is part of the national low-carbon, energy-saving and environmental protection industries. It is in line with the national industrial support policy and belongs to one of the areas of LED industry extension. 2, Internet of Things and intelligent lighting In addition to high light efficiency, light quality, thin size and intelligent control system will be the focus of future LED lighting development. If there is a very significant growth in the LED field, it must be the smart lighting market. Intelligent lighting refers to the distributed wireless telemetry, remote control and remote control system composed of computer, wireless data transmission, spread spectrum power carrier communication technology, computer intelligent information processing and energy-saving electrical control technology to realize the lighting equipment. Intelligent control, with the brightness intensity adjustment, light soft start, timing control, scene setting and other functions, to achieve safety, energy saving, comfort and efficiency. It requires advanced control, including programmable performance, spectrum control, and environmental integration. At present, this is probably 13% of the total LED market of 2 billion US dollars, but it is expected to double in 2014.