In the early winter of the provincial capital Changchun, the snow has not completely melted. In the vegetable greenhouse of the Northeast Institute of Geography and Agricultural Ecology of the Chinese Academy of Sciences, it is warm and inviting. In the glorious tomato test field, the Science and Technology Daily reporter saw a strange picture: the colorful lights hit the tomato plants, as if to put it on a beautiful dress, the fruitful tomato is more tender and attractive.
"The light that shines on the plants is LED light. We are studying the effects of LED light sources on plant growth." Zhang Xiaoping, a researcher at the Northeast Institute of Geography, Chinese Academy of Sciences.
LED drives multi-field development
Facility agriculture (glass greenhouses, PC greenhouses, plastic greenhouses, etc.) uses modern technology to create artificially controlled environments for production. So, is the light source in facility agriculture now meeting the needs of plant growth?
"The light source in the existing facility agriculture is difficult to meet the needs of plant growth." In Zhang Xiaoping's view, light is one of the elements of plant growth. If it encounters insufficient light conditions in autumn and winter, or bad weather conditions such as rain and fog, it will cause The serious consequences of reduced production or even no harvest.
"Complementary light can play a role in early marketing, flowering, sugar improvement and prevention of deformed fruit. It is an effective way to stabilize production and increase production. Compared with the current common sodium and bio lamps, LED lamps have long service life, power saving, and lamps. The surface temperature is low (cold light source), which can be placed close to the plant, and the light intensity of the blade is high." Zhang Xiaoping said that according to the needs of different plants and different time, the LED lamp can combine the spectra of different wavelengths. "To complete the research and application of the impact of LED light source on plant growth, provide technical parameters for the development of facility agriculture for LED light source, and achieve industrialization."
Hu Xintian and his research team explored the research and application of LED light source on human vision and brain advanced function, and explored the mechanism and effect of LED light source on human vision and brain advanced function.
Strong joint deployment of "璀璨 action"
In 2013, on the basis of full investigation, the Chinese Academy of Sciences organized the implementation of the “Deaf Action†with the goal of “making new contributions to the development and improvement of the national semiconductor lighting industryâ€. The plan is a key project initiated by the Chinese Academy of Sciences. It plays the operational advantage of the Chinese Academy of Sciences in terms of LEDs, targeting market needs and solving practical problems.
The head of the “璀璨Action†project project said that the focus of the project research is on the practical application of the product, not only the technical research, but also the practical problems in industrialization and practical application of products. It is necessary to have the production unit to undertake the project results and truly realize the industrialization."
It is understood that the "Operation Action" not only pointed out the direction for the LED industry from the product and technology level, but also made detailed plans for industrial and social development. In addition, it is worth mentioning that the initiative establishes two clusters: functional product innovation clusters and detection and standard innovation clusters.
LED industry standard system needs to be improved
As we all know, led products consume more resources and energy in the manufacturing process. So, is the led lighting industry really an energy-saving industry?
Sun Qiang, a researcher at the Changchun Institute of Optics and Mechanics, Chinese Academy of Sciences, said that life is the most representative parameter among the reliability parameters of LED lamps . At present, the 6000 hour test cycle commonly used in the life of LED lighting products in the industry is close to 9 months. Compared with the LED lighting products with a replacement cycle of 3 to 4 months, such a long test method severely restricts the LED lighting industry. development of.
As one of the participating organizations of the Action Plan, the Changchun Institute of Optics and Mechanics of the Chinese Academy of Sciences explored the rapid detection mechanism of product life and realized the equipment and method for shortening the life test time of LED products from 6000 hours to 1000 hours.
"According to industry estimates, every 1000 hours of accelerated life test time for LED products will bring 20% ​​economic profit." Sun Qiang said.
However, in the rapid development of LED, its industry standard system has not been perfected, and relevant standards are missing. Up to now, led lighting equipment reliability has not yet complete reference scale, especially in LED lamp reflected on accelerated life testing methods and reliability testing standards, not yet formally introduced the relevant standards.
"The LED lighting product reliability acceleration test equipment subject through the detection method research and equipment development, and finally develop the corresponding accelerated test method standards and equipment standards, and actively promote the standard to become a national standard and put into practice, mandatory LED lighting products must be shipped before leaving the factory Carrying out life testing and ensuring quality will inevitably play an important role in regulating the LED lighting market ." Sun Qiang expressed with confidence.
LED Business Network led to focus on e-commerce platform to promote led enterprises + Internet, the official website URL: http://
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