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LED technical standards and Detection Method

发表者:伟源科技有限公司      发布时间:2009-08-31      共浏览503次

LED technical standards and Detection Method:

    LED lighting from the LED light source, the composition of electrical accessories and appliances. It uses the semiconductor light-emitting device as a light source, with a small size, long life, low energy consumption, instantaneous start, color-rich characteristics, is an environmentally friendly energy-saving cold source.
     In recent years, the United States, Japan, and Europe and other developed countries and governmental organizations to invest in the LED emitting a lot of manpower and material resources organizational development and research, so that LED light sources have shown a substantial increase in technical level, the power has reached a 3 ~ 5W , luminous efficiency of 301m / w, so that LED light source for general illumination is possible.
     LED products will become the latest energy-efficient lighting products. But LED lighting is a high-tech, high value-added products, our previous study on the LED lighting is still very weak, and foreign levels vary considerably, especially in the applied basic research still can not meet the needs of China's industrial development.
     In the LED lighting product testing technology and product standards, far from China's LED lighting industry can not meet the requirements of the development. The development of LED lighting in China, first of all should establish and improve China's LED lighting technical standards and testing methods evaluation system, standardize the existing detection system, the products of different companies based on a unified testing methods testing, the only way to truly understand China's LED The technical level of lighting products, thus promoting China's LED lighting industry, technological progress and development of the industry.
     LED lighting technology, the establishment of standards and testing methods, but also will promote the progress of semiconductor technology, LED lighting products for the production and improvement of the quality and shorten the gap between China and the international level, has extremely important practical significance and far-reaching historical significance will have a huge economic and social benefits.
     LED lighting standards and the status of detection technology International Commission on Illumination (CIE) and the International Electrotechnical Commission (IEC) had no information on LED lighting standards.
     Only in the last century, 90 years, CIE has issued a general LED test methods technical report. However, due to the technology in recent years, the rapid development of LED products, and now found in many of the technical characteristics of LED are not taken into account in the past. Thus, in 1999, held in Kyoto, Japan, IED's annual meeting, attended by representatives of developed countries, as suggested by ICETC34 (lighting technical committee) to develop white LED lighting standards, the Japanese delegation also submitted a white LED for general lighting of the two draft standards . In order to develop lighting LED, developed countries have attached great importance to LED testing methods and standards research. For example, detection of the American National Standards Institute (NIST) is a world-renowned research institutions, testing, is currently testing an internationally renowned experts in their organization to carry out LED testing studies, focuses on LED light-emitting characteristics, temperature characteristics and optical properties such as bad test methods, trying to establish complete The LED test methods and technical standards in LED testing has been walking in the forefront of the world. Japan set up a "white LED Testing Research Committee", specializing in white LED lighting with the test methods and technical standards. Study of countries in the world in order to seize the high ground of LED in the LED standards and testing have invested a great deal of manpower and resources to focus on options in the standards and test methods characteristic parameters of LED research. China's current non-LED lighting standards, there is no corresponding LED lighting detection system. Some enterprises have purchased a part of the test equipment. However, due to lack of professional research, testing the low level of supporting equipment, poor detection accuracy is low, can not be compared with each other, test projects can not meet the demand. Although the professional testing organization in China have carried out a number of LED testing research work, but because of the limited conditions, yet can not form a complete evaluation of the detection system, its level and that there is still a wide gap between the developed countries.
     At present, China on the test sector has embarked on LED lighting test methods, including studies on the development of testing equipment. The National Standardization Technical Committee Lighting LED lighting has the technical standards and test methods standards in the standard work plan for 2004 and hopes to develop a standard LED lighting to promote LED technology and lighting applications.
     Problems to be resolved
     LED lighting products, technical standards and focus on solving the problem characteristics and test methods, LED performance is the most important optical properties and electrical characteristics. Optical properties including the luminous flux, light distribution, luminance, spectral distribution, chromaticity coordinates, color rendering index.
LED lighting applications, in optical light source similar to the existing general commonality, another particularity of their products: LED as a directional light-emitting devices; luminous body is very small, can approximate point light source; light-emitting by environmental and processing process a greater impact.
     LED Light bad characteristics of a very long measurement period (tens of thousands or even tens of thousands of hours). LED lighting, except those involving the use of optical performance, there are also the characteristics of electrical accessories (including energy-saving appliances, annex), mechanical properties, temperature characteristics and appliances such as security features.
     Therefore, in the standard setting process to focus on test methods to consider the issue
     The first is to choose from and the development of LED characteristics consistent with the test equipment, test systems. Include: LED optical test systems, temperature monitoring test systems, electrical testing systems, environmental test systems, durability, reliability test systems. Mainly testing system should adopt international advanced means, in the test methods should be close to the international advanced level.
     Through the cooperation and exchanges with foreign laboratories, so that China's LED detection technology and international development simultaneously, so that an objective standard to reflect both the technological level of China's LED lighting, LED lighting and the rapid development of China's compatible, but also be consistent with international standards further for LED technology.
     Lighting LED standard series of standards
     Series of standards the basis of standard (or master standard) is a single-tube LED lighting standards and test methods standards, formed the basis of a standard LED lighting systems. LED Standard LED light source must first solve the characteristic requirements in lighting, LED light source to determine the technical requirements, and through the LED for LED testing the main technical characteristics and technical parameters to determine the technical level of China's LED lighting and related technical indicators and technical requirements.
     LED technology has developed rapidly due to lighting, LED lighting standards should be developed with the technology and adapt to market needs. Standardization bodies, testing organizations, lighting, LED research department, production enterprises and application units should complement each other, work together to establish a set of line with China's national conditions, technologically advanced LED lighting of the national standards.