LED Plant Lighting: A Collection Of 6 Essential Essentials
LED Plant Light Definition
LED can emit narrow-spectrum monochromatic light in the range of 300~800nm of physiologically effective radiation of plants, with rich light quality, combined modulation of light source spectrum and intelligent control of light environment. LED light source has the advantages of environmental protection, energy saving, small volume, cold light source, low voltage and DC power, etc. It is regarded as the ideal light source for facility agriculture by the industry.
LED plant light belongs to the category of agricultural semiconductor lighting, it can be understood that it is the use of semiconductor electric light source and its intelligent control equipment, in accordance with the law of plant growth light environment needs and production target requirements, the use of artificial light to create a suitable light environment or to make up for the lack of natural light, regulate the growth of plants to achieve "high quality, high yield, stable yield, college, ecological, safe It is an agricultural engineering measure to achieve the production goal of "high quality, high yield, stable yield, college, ecology and safety".
LED plant lights belong to the innovative application of LED in the field of agriculture, and the national terminology and definition of "LED lighting for plant growth" is being closely compiled.
LED lighting can be widely used in plant group culture, leafy vegetable production, greenhouse supplementation, plant factories, nursery plants, medicinal plant cultivation, edible mushroom plants, algae culture, plant protection, space fruits and vegetables, flower planting, mosquito repellent and many other fields, planted out fruits and vegetables, flowers, herbs and other plants can meet the military border guard posts, alpine areas, areas with scarce water and electricity resources, home office gardening, marine Space personnel, special patients and other areas or the needs of the population.
At present, the market has developed and produced a number of LED plant light devices, such as LED plant growth lights, plant growth boxes, residential LED plant growth table lamps, mosquito repellent lights, etc.. Among the common forms of LED plant grow lights are light bulbs, light bars, panel lights, light strips, downlights, light grids, etc.
At present, there are more than 150 enterprises engaged in LED plant lights in China, mainly located in the Yangtze River Delta and the Pearl River Delta region.
According to the prognosis of the Chinese Academy of Agricultural Sciences, including LED plant lights, agricultural semiconductor lighting market prospects are very broad, according to the scale of China's existing agricultural industry estimates, the next five years, the demand for agricultural LED lighting fixtures and their control equipment will reach billions of dollars, within 10 years will reach the scale of ten billion, with an annual growth rate of 20% to 50%; the total size of the agricultural semiconductor lighting industry hundreds of billions of dollars. Also specifically pointed out that plant seedling cultivation, plant seedling production, edible mushroom production, livestock and poultry breeding industry will become the pioneering field, replacing traditional light sources with LED light sources, plant factories and greenhouse supplemental light is the fastest growing semiconductor lighting field, high technology content, equipment intelligent system, is the focus of the development of the agricultural semiconductor lighting industry.
LED plant light technology in China started late, LED light source in plant factories will be widely used year by year, the laws of photobiology and LED light source devices and lighting intelligent control system of industrialization still have many obstacles, further research is needed. According to the Chinese Academy of Agricultural Sciences speculation, the next 10-20 years later, China will become the world's agricultural semiconductor lighting technology and equipment industry and its application of large and powerful countries.
The following are the 6 basic points that should be known when entering the LED plant light industry
First, LED plant light market demand is so large, if you want to enter the biggest difficulty in which?
LED plant light is a product of interdisciplinary and organic combination development of biology, facility horticulture, vegetable science, plant physiology, plant nutrition, bioenvironmental engineering, LED lighting, intelligent control technology, etc.. So only good at semiconductors, plants, intelligent systems one or both is not enough, full collaboration and cross-research applications are essential. The biggest difficulty in entering the LED plant light market is that in order to develop and produce high yielding and high quality ecological LED plant light source or lamps, it is necessary to solve the problem of how to integrate and integrate the development of light environment intelligent control, plant photobiology and LED semiconductor technology at the same time.
Second, what does plant photobiology mean?
The study of plant photobiology laws is an important basis for LED plant lights, including the study of the quantitative properties of the light environment (light intensity and photoperiod), qualitative properties (light quality and spectrum), and the luminous properties of electric light sources (duty cycle, frequency). Plant photobiology has a high complexity and systematic nature. Light quality refers to the type of light quality that has an effect on organisms, including visible light, UV and far-red light. In photobiology, we need to figure out the following issues: first, the biological functions of photoplasm, the physiological metabolism, molecular biology and proteomic mechanism of the effect of single and compound photoplasm on plant growth and yield quality; second, the mechanism of photoplasm adaptation and utilization variability among plant species and varieties; third, the biological mechanism of interaction between photoplasm and other factors in the environment; fourth, the photoplasm of lighting facilities The effective threshold and benchmark values of quantitative attributes of lighting facilities. In addition, the biology of adversity photoplasm of clear low light, strong light and the response mechanism of photosynthetic mechanism operation efficiency under continuous light also need to be studied.
Third, why the light formulations of the same plant in different companies are different?
The establishment of a variety of plant growth and development, high quality and high yield required for the development of light formulas LED plant light industry's foundation. The light formula is a collection of parameters of the types of light quality and its quantitative properties required for each stage of growth and development of the characteristic plant species and varieties with the goal of high quality and high yield. The appropriate light formulas are different for each plant species and different growth stages. Why do different companies have different light formulations for the same kind of plants, or even vary greatly? This is mainly related to the company's goal of plant growth. To put it simply, according to the market demand and the development needs of enterprises, they can lower the requirements, only need to exceed the minimum light formula requirements for plant growth, and relax the requirements for other environments for biological growth, then not only the light formula will be different, but also the environmental control system will be very different. On the contrary, companies can also be strict and try to create the best growing environment and conditions for plants, so that the light formula developed will be good. In the future, with the introduction of relevant standards and requirements in the field of LED plant lights in China, light formulations speak gradually unified or maintain the consistency of the basic conditions.
Fourth, LED plant growth light sources and lamps and lanterns R & D production need to pay attention to what principles?
LED plant growth light source and lamps and lanterns is the core of the LED plant light industry, companies need to develop the light source and lamps and lanterns needed for plant growth according to the light formula. The following four principles should be noted: First, the principle of high light energy utilization, the development of reasonable spectral components to maximize the luminous efficiency of LED light sources, reduce the distance between the light source and the irradiated plants, reduce light loss and improve the efficiency of light energy utilization; second, the principle of low cost, cost is one of the most important factors in determining the industrial development of LED plant lights; third, the principle of ecological safety, in the red and blue spectrum, increase the trace or a small amount of green light components to increase visual health; fourth, priority is given to the development of high value-added plant-specific LED light sources and lamps.
Fifth, what is the plant light environment control, including what aspects?
Light environment control is the spatial and temporal management of light environment parameters directly controlled and switched by computer with the goal of high quality and high yield, based on the light formula of plant species and varieties cultivated in each production system of plant factories at each stage of growth. For example, greenhouse light supplementation requires consideration of natural light daily variation parameters, environmental parameters, plant photosynthetic physiological parameters, plant growth stages and light fixture properties to implement economical and effective light supplementation methods to meet light intensity, light quality and light cycle requirements, energy saving and high efficiency. Plant light environment control mainly refers to the control of light quality, light intensity, light cycle, spatial position and movement rate of LED lamps. Light environment control has obvious spatio-temporal characteristics, so it is very important to establish dynamic real-time control, to achieve automation and intelligence of LED plant light environment control is the general trend.
Six, LED plant light fixture design is mainly concerned about which indicators and performance?
Grow light fixtures designers need to pay attention to the following indicators and performance: 1, the uniformity of light; 2, the rationality of light quality grouping; 3, the reliability of heat dissipation; 4, the suitability of the LED chip power; 5, the efficiency of the luminous surface; 6, the visual comfort.
