CN114128514B - Light supplementing device and method based on long afterglow luminescent material - Google Patents

Abstract

The present invention relates to a supplementary light device and method based on long afterglow luminescent materials. The supplementary light device includes a first supplementary light unit and a second supplementary light unit. The first supplementary light unit can at least illuminate the growth area when it is powered on. The second supplementary light unit can be configured as a reflective plate coated with a long-lasting fluorescent material, and the reflective plate is arranged obliquely with the side coated with the long-lasting fluorescent material facing the first supplementary light unit, in order to increase the light-receiving area The long-lasting fluorescent material is excited by receiving the escape light irradiated by the first supplementary light unit on the growth region and passing through the gap structure of the target object, so that at least when the first supplementary light unit is powered off, it can be compared with the first The illumination direction of the supplementary light unit provides light with a long afterglow spectrum for the growth area.

Description

A kind of supplementary light device and method based on long afterglow luminescent material

technical field

The invention relates to the technical field of agricultural lighting, in particular to a supplementary light device and method based on long afterglow luminescent materials.

Background technique

At present, agricultural farming can usually be divided into traditional farming methods and modern farming methods. Compared with the open farming methods of traditional agriculture, modern indoor farming technology can reduce the impact of external climate and improve the utilization rate of land and space resources. Improve production automation and output and can effectively avoid pollution such as heavy metals.

Light plays a vital role in farming, and different combinations of light quality have different effects on the growth and development of agricultural products. At present, the light source for agricultural breeding mainly comes from electric light source. Traditional electric light source has low efficiency and high heat generation. Electricity accounts for about 65% of the entire electricity cost, and accounts for a large proportion of the non-human cost of agricultural breeding.

LED is the abbreviation of light-emitting diode. It is a kind of semiconductor diode. It releases energy and emits light through the recombination of electrons and holes. It can adjust the light source according to different needs with good controllability to achieve efficient and energy-saving lighting. However, the LED light source must be powered on to emit light. Therefore, in agricultural breeding, it is often necessary to power on the LED light source for a long time to ensure sufficient lighting during the breeding process. This undoubtedly leads to an increase in operating costs and a large amount of energy consumption. Therefore, the prior art proposes a long afterglow LED light source to achieve a more efficient and energy-saving lighting mode by means of long afterglow luminescence. The long afterglow luminescence means that after the external excitation light source stops exciting, the material itself can still The phenomenon of self-illumination, the excitation light source is usually long-wave ultraviolet or short-wave visible light. For example:

CN 110055061 B discloses a red long-lasting nitride luminescent material and a preparation method thereof, the general chemical formula of which is (Mg _1-xy Ca _x ) _1-z Al _1-y Si _1+y N _3-y O _y : zMn ²⁺ , where 0≤x≤0.3, 0≤y≤0.4, 0.01mol%≤z≤10mol%. The preparation process includes: (1) using metal Mn powder or a compound containing Mn as a source of Mn element, using metal Mg powder or a compound containing Mg as a source of Mg element, and using Si ₃ N ₄ or SiO ₂ as a source of Si element , with Ca ₃ N ₂ as the source of Ca element. (2) All the raw materials were ground under _N2 protection conditions, and high temperature sintering synthesis was carried out under high pressure _N2 protection conditions. The emission band of the phosphor powder prepared by the invention is located at 550nm-870nm. After the phosphor powder obtained is irradiated by long-wave ultraviolet rays, an obvious red afterglow can be observed. High thermal and chemical stability. Because it can be excited by long-wave ultraviolet light, the phosphor can be effectively used in AC LED, plant lighting, full-spectrum display and other fields.

CN 109945081 A discloses a new type of long afterglow LED plant lamp for orchids. This invention belongs to the field of rare earth material light emission and is applied to plant factory system lighting so that the roots, stems, leaves and flowers of plants can be effectively grown. Compared with market products, it is more aimed at the growth of orchid-type plants. At the same time, due to the combination of long afterglow powder and LED powder, on the basis of the above basic characteristics, it has the advantages of energy saving, excellent service life and safety.

CN 109973842 B discloses a preparation method of a long afterglow LED plant lamp light-emitting chip. In this invention, phosphor powder BaMgAl ₁₀ O ₁₇ :Eu ²⁺ , Sr ₂ SiO ₄ :Eu ²⁺ , CaAlSiN:Eu ²⁺ , SrAl ₂ O ₄ :Eu ²⁺ , Dy ³⁺ , CaAl ₂ O ₄ :Eu ²⁺ , Dy ³⁺ , ZnGa ₂ O ₄ :Cr ³⁺ _, Bi ³⁺ _were dry-milled _and mixed for _30-45 ^minutes to obtain mixed powder A; ³⁺ , Bi ³⁺ , Sr ₂ SiO ₄ :Eu ²⁺ , SrAl ₂ O ₄ :Eu ²⁺ , Dy ³⁺ were dry-milled and mixed for 30-45 minutes to obtain mixed powder B; The body A is packaged on the ultraviolet LED chip or the mixed powder B is packaged on the blue LED chip, and solidified to obtain a long afterglow LED plant lamp light-emitting chip. This invention uses the combination of long afterglow system and LED phosphor system to form a continuous spectrum that is closer to sunlight. As a plant lighting system, the plant lamp lighting luminous body is more beneficial to the growth and development of plants, so that plants grow faster and better. At the same time, it is non-toxic and safe, has excellent LED life, and good energy saving.

In the prior art, research and improvement of long-lasting fluorescent materials are mainly carried out to explore the corresponding long-lasting spectra excited by different long-lasting fluorescent materials. When long-lasting fluorescent materials are applied to the field of plant cultivation, the long-lasting The afterglow LED plant light irradiates the plants by emitting continuous multi-segment spectrum light, so as to realize energy-saving lighting that can ensure that the plants receive light both when the power is turned on and when the power is turned off. However, compared with LED fluorescent materials, the luminous intensity of long-lasting fluorescent materials is relatively weak. For lush and/or densely planted plants, it is likely to overlap or block parts such as stems and leaves, while long-lasting fluorescent materials are weak. The luminous intensity makes the penetrating ability of the light emitted by it weak, and the leaves with a lower overlapping order in the multi-layered overlapping leaves can receive very limited light, or even cannot receive light, which makes their photosynthesis efficiency low and affects the overall growth rate of the plant.

In addition, on the one hand, due to differences in the understanding of those skilled in the art; The present invention does not possess the characteristics of these prior art, on the contrary, the present invention already possesses all the characteristics of the prior art, and the applicant reserves the right to add relevant prior art to the background technology.

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention provides a supplementary light device and method based on long afterglow luminescent materials. In the prior art, the long afterglow LED light source composed of long afterglow system and LED phosphor system is used to realize continuous multi-segment spectrum lighting, so that light of mixed spectrum is emitted when power is turned on and long afterglow is emitted after power off The spectrum of light can extend the lighting time in a way to reduce costs and ensure long-term photosynthesis of plants. However, for lush and/or densely planted plants, it is very likely that stems and leaves will overlap or be blocked based on the phototropism of growth, resulting in a lower overlapping order of parts that are farther away from the light source in the case of multi-layer overlapping. The weaker the light that can be received, the light needs to pass through parts with a higher overlapping order and/or reflect on other parts to reach parts with a lower overlapping order. At the same time, the luminous intensity of long-lasting fluorescent materials is higher than that of LED fluorescent materials. It is much weaker, which makes the light penetrating ability of the long afterglow fluorescent material weak, and it is difficult to pass through the overlapping parts of multiple layers to reach the parts with lower overlapping order. It also caused a lot of losses due to multiple reflections, which cannot meet the needs of photosynthesis.

The invention discloses a supplementary light device based on a long afterglow luminescent material. The supplementary light device includes a first supplementary light unit and a second supplementary light unit. The supplementary light unit can be configured as a reflective plate coated with a long-lasting fluorescent material, and the reflective plate is arranged obliquely with the side coated with the long-lasting fluorescent material facing the first supplementary light unit, so as to increase the light-receiving area. The first supplementary light unit irradiates the growth area and passes through the gap structure of the target object to complete the excitation of the long-lasting fluorescent material, so that at least when the first supplementary light unit is powered off, it can be compared with the first supplementary light unit. The illumination direction of the light unit provides light with a long afterglow spectrum to the growing area. The target objects can be all kinds of organisms in agricultural breeding, including animals and plants. The growing area divides the farming site based on factors such as the type of target object. The supplementary light device can set up several first supplementary light units and several second supplementary light units respectively based on the size of the breeding place, the division of the growth area and/or the planting situation of the target object, and the first supplementary light unit can correspond to the growth area. setting, the second supplementary light unit may be set corresponding to the target object. When the first supplementary light unit illuminates multiple growth regions, each second supplementary light unit can be correspondingly arranged on the growth region platform on the other side of each target object relative to the first supplementary light unit, so that each target object It can be located between the optical path connecting lines of the corresponding first supplementary light unit and the second supplementary light unit.

The first supplementary light unit can be arranged in the air of one or more growth areas along the first direction to cover the target object that needs to be illuminated in the corresponding growth area, and the second supplementary light unit can be based on the position of the target object relative to the first supplementary light The units are laid out in the growth area.

The first supplementary light unit can at least be equipped with a long afterglow LED light source combined with a long afterglow fluorescent material and an LED fluorescent material, so that the long afterglow fluorescent material of the first supplementary light unit can be illuminated by the light emitted by the LED fluorescent material when the power is turned on. Excited so that the first supplementary light unit can emit light with different spectra when the power supply is connected and disconnected.

The first supplementary light unit can be made of long afterglow fluorescent material through dry grinding and mixing treatment, and encapsulated on the LED chip of the corresponding LED fluorescent material by epoxy resin, wherein the type of long afterglow fluorescent material can be selected based on the target Determined by the wavelength of light required for the growth of the object.

The first supplementary light unit can be configured with several independent LED light sources to at least emit red light, blue light and/or pink light composed of red and blue, so as to adjust the spectral distribution of light emitted by the long-lasting LED light source.

When the escaped light passing through the gap structure of the target object in the first supplementary light unit excites the long-lasting fluorescent material of the second supplementary light unit, the monitoring unit can monitor the parameters of the excitation light of the long-lasting fluorescent material, so as to transmit the monitoring data to computing unit.

The calculation unit can calculate the growth state of the target object and the impact of environmental factors on the target object by calculating the size of the gap structure based on the excitation light parameters of the second supplementary light unit and combined with the environmental parameters collected by the monitoring unit for the environmental indicators in the growth area. effects on the growth process.

The calculation unit can communicate with the cloud database to download the sample data of the corresponding target object in the cloud database, and can upload the real-time acquired calculation data with environmental parameters to the cloud database as new time-ordered sample data.

The calculation unit can form and update the light recipe database of the irradiation duration and light intensity of the corresponding target object at different growth stages based on the excitation light parameters acquired by the monitoring unit, wherein the calculation unit can exchange data between the light recipe database and the cloud database.

Preferably, the first supplementary light unit and the second supplementary light unit can each have a plurality of different fixed positions and can adjust corresponding angles of incoming light. The fixed positions of the first light supplement unit and the second light supplement unit may be determined based on the planting positions of the target objects in each growth area. The incident angles of the first supplementary light unit and the second supplementary light unit are correspondingly set so that the reflector of the second supplementary light unit can receive the light emitted by the first supplementary light unit with a larger light receiving area.

The present invention also discloses a supplementary light method based on a long afterglow luminescent material. The supplementary light method adopts any of the aforementioned supplementary light devices, wherein the supplementary light method can be based on the combination of active supplementary light and driven supplementary light from the relative The target object in the growth area is illuminated in two directions to ensure the light receiving and growth conditions of the target object. The active supplementary light can be an LED light source that starts to emit light when the power is turned on and stops when the power is turned off, and the passive supplementary light can be a long-lasting light source that emits light based on the light emitted by other light sources. Therefore, the first supplementary light unit may be in the form of active supplementary light and/or a combination of active supplementary light and driven supplementary light, the second supplementary light unit is only in the form of driven supplementary light, and the second supplementary light unit can at least be based on the first The light emitted by the active supplementary light form of a supplementary light unit is used for passive supplementary light.

Description of drawings

Fig. 1 is a partial structural schematic diagram of the light supplement device of the present invention in a preferred embodiment;

Fig. 2 is a schematic diagram of a logical module of the light supplement device of the present invention in a preferred embodiment.

List of reference signs

100: first supplementary light unit; 200: second supplementary light unit; 210: reflector; 220: long-lasting fluorescent material; 300: monitoring unit; 400: computing unit; 500: terminal; 600: cloud database; 700: growth area; 800: target object.

Detailed ways

A detailed description will be given below in conjunction with the accompanying drawings.

FIG. 1 is a schematic diagram of a partial structure of the light supplement device of the present invention in a preferred embodiment, and FIG. 2 is a schematic diagram of a logical module of the light supplement device of the present invention in a preferred embodiment.

The invention discloses a supplementary light device based on a long afterglow luminescent material. The supplementary light device can provide light with preset illumination parameters for the breeding ground to meet the lighting requirements for the growth of the target object 800 in the breeding ground, wherein the target object 800 can be It is all kinds of organisms in agricultural breeding, including animals and plants. For example, the supplementary light device can illuminate the plants in agricultural breeding to ensure the photosynthesis of plants, so as to achieve high-quality and high-yield cultivation of plants, and further, high-quality cultivated plants can also be used for the growth process of other organisms , in order to achieve efficient use of resources.

Irradiation based on light sources allows plants to produce nutrients and organic matter during growth and development for delivery to leaves, flowers and fruits. However, when plants cannot obtain enough light or are in a light-free environment, they cannot perform photosynthesis normally, resulting in reduced yield or even death of plants. Therefore, in winter, rainy days and other environments with insufficient light or indoors that cannot receive sunlight, the light supplement device can be used to supplement light for plants to ensure normal, efficient and scientific photosynthesis.

Preferably, the supplementary light device may include a first supplementary light unit 100 and a second supplementary light unit 200 , so as to realize illumination of the breeding place through cooperation of the first supplementary light unit 100 and the second supplementary light unit 200 .

According to a preferred embodiment, one or more target objects 800 individuals can be divided into several growth areas 700 in a group mode, wherein, several target objects 800 with substantially the same illumination parameters for the required light can be The light provided by the same first supplementary light unit 100 is arranged in adjacent or aggregated growing areas 700 to reduce the number of configurations of the first supplementary light unit 100 in the breeding ground, thereby saving installation and operation costs.

Preferably, the direction that the ground points to the sky is defined as the first direction, and the first supplementary light unit 100 can be installed in the air corresponding to the growth area 700 along the first direction by various installation methods such as suspension, support or riveting. When a plurality of growth regions 700 share the same first supplementary light unit 100, the first supplementary light unit 100 can be arranged in the air at the relative centers of the plurality of growth regions 700, so that the light emitted by the first supplementary light device The light can cover each growth region 700 relatively uniformly. The breeding place can set up several installation frames for installing the first supplementary light unit 100 in the air along the first direction in each growth area 700, and the laying method of the installation frames can be determined based on the division method of the growth area 700, so that the first The supplementary light unit 100 can adaptively adjust the installation position based on lighting requirements.

For example, when a first supplementary light unit 100 illuminates four growth regions 700 formed in the shape of a "field", the intersections of the partitions that separate the growth regions 700 in a criss-cross manner can be spaced along the first direction. The corresponding first supplementary light unit 100 is configured to provide illumination to the corresponding four growth regions 700 through the first supplementary light unit 100 .

Optionally, the first supplementary light unit 100 can adopt an LED light source, wherein the LED light source may include a single-color LED light source, a dual-color LED light source, or a white LED light source. Monochromatic LED light sources can be at least classified into blue light sources, green light sources, red light sources, etc. based on the wavelength of light emitted. The two-color LED light source can emit light with a composite spectrum based on the superposition of two wavelengths of light, for example, a red and blue LED light source. The white light LED light source can be mixed by a variety of monochromatic lights with different wavelengths through the conversion device when emitting light, and its power consumption is high, while the light conversion efficiency of the monochromatic LED light source is higher, and it can emit more light under the same energy consumption. Many photons. Based on the fact that plants are roughly located in the effective energy region of photosynthesis in the range of 400-700nm, about 45% of the energy in white light is located in this spectrum, and more energy may be lost at a lower conversion rate. Among them, plants Most sensitive to red light spectrum and less sensitive to green light. The irradiation of red light can greatly improve the photosynthetic ability of plants, but when the proportion of far-red light is too much and there is a lack of blue light that is beneficial to plant differentiation and stomatal regulation, the stems will grow excessively, which will easily cause yellowing of leaves. Generally, a monochromatic LED light source can be configured with a red light source for emitting a fixed wavelength of 610nm to 720nm and a blue light source with a wavelength of 400nm to 520nm, wherein the chlorophyll in plants can absorb about 75% to 85% of the wavelength at 610nm to 610nm. 720nm red light is used for plant (seed) germination, flowering, fruiting and synthesis of plant chlorophyll; chlorophyll in plants can absorb more than 90% of blue light with a wavelength of 400nm to 520nm to promote the development of plant roots and reduce growth points , The leaves and stems become thicker, and the plants are stronger, and the disease resistance is significantly enhanced. The white light LED light source usually uses a blue core, which is compounded by exciting yellow phosphor to produce visual white light. This white light has two peaks in the blue area of 445nm and the yellow-green area of 550nm, and the 610~ 720nm red light is very lacking. Therefore, the first supplementary light unit 100 is preferably a single-color LED light source and/or a two-color LED light source to ensure normal photosynthesis of plants and reduce energy consumption.

Preferably, the first supplementary light unit 100 can be configured with several single-color LED light sources and/or two-color LED light sources, so as to provide red and blue colors at least based on different forms of independent LED light sources such as red and blue combinations, all-blue and all-red. Light that can cover the wavelengths required for photosynthesis, among which, the light emitted by a combination of red and blue light is pink.

Further, at least some of the independent LED light sources of the first supplementary light unit 100 can be replaced by long-lasting LED light sources combined with long-lasting fluorescent materials 220 and LED fluorescent materials to achieve convenient spectrum modulation, avoiding the need for a single LED light source. The automatic modulation of the red and blue ratio of the spectrum can be realized only through the current regulation system. The long afterglow LED light source is made of several fluorescent powders that are dry-milled and mixed, and encapsulated on the corresponding LED chips by epoxy resin. The long-lasting LED light source can realize multi-stage spectral emission based on a single luminous body. Among them, the near-infrared band has an impact on plant pheromones, which is conducive to regulating flowering, promoting flowering and photosynthesis; Accumulate and affect the production of gibberellin; the blue spectral band promotes the formation of plant protein, and then promotes the elongation of plants, which is beneficial to the improvement of plant height and plant shape; the green spectral band is beneficial to the photosynthesis of plants And supplement the spectrum of new-type plants, so that the light parameters such as color temperature and spectrum of long-lasting LED light sources are closer to sunlight. The LED fluorescent material in the long afterglow LED light source can emit light of corresponding wavelength based on the connection between the LED chip and the power supply, and the long afterglow fluorescent material 220 emits light with a long afterglow spectrum correspondingly under the excitation of the light emitted by the LED. In order to make the mixed spectrum formed by the two types of light better promote the photosynthesis of plants, and when the LED chip is disconnected from the power supply, the LED fluorescent material stops emitting light and the long-lasting fluorescent material 220 can slowly release the light energy stored during the power-on period, so as to The growth area 700 is illuminated by only providing long afterglow spectrum light to continue the photosynthesis of plants, thus breaking the limitation that the existing commercial LED light source must achieve continuous lighting under continuous power supply, making the intermittent power supply mode also possible. The ability to continuously illuminate the plants not only improves the service life of the first supplementary light unit 100, but also reduces energy consumption and cost.

Preferably, the long-afterglow LED light source can encapsulate various required phosphor powders that can excite different wavelengths of light on different LED chips to emit light with different spectra, wherein the LED chips can be blue LED chips, ultraviolet LED chips, etc.

For example, the long-lasting fluorescent material 220 of the long-lasting LED light source can be configured as follows based on the wavelength band of the required light:

Use ZnGa ₂ O ₄ :Cr ³⁺ , Bi ³⁺ as the phosphor powder in the near-infrared band to emit light with a wavelength of 704nm. At the same time, this phosphor has good afterglow performance. up to 4 hours or more;

Use CaAlSiN:Eu ²⁺ as the phosphor in the red band to emit light with a wavelength of 625nm;

Use Sr ₂ SiO ₄ :Eu ²⁺ as the phosphor powder in the green band to emit light with a wavelength of 530nm, and can be doped with a small amount of long-lasting green powder SrAl ₂ O ₄ :Eu ²⁺ ,Dy ³⁺ , whose long-lasting wavelength is 518nm;

Use BaMgAl ₁₀ O ₁₇ :Eu ²⁺ as the phosphor in the blue band to emit light with a wavelength of 450nm, and can be doped with a small amount of long-lasting blue powder CaAl ₂ O ₄ :Eu ²⁺ ,Dy ³⁺ . 440nm.

The above-mentioned long-lasting fluorescent material 220 is dry-milled and mixed, and encapsulated on the blue LED chip through epoxy resin, so that the LED chip can generate blue light with a wavelength of 365nm by connecting the LED chip to the power supply, and the LED chip can be packaged on the LED chip. Different types of long-lasting fluorescent materials 220 are excited by the blue light and emit light of corresponding wavelengths to form a multi-segment spectrum.

Preferably, the red light with a wavelength of 610nm to 720nm and the blue light with a wavelength of 400nm to 520nm that have the greatest impact on plant growth in the first supplementary light unit 100 can adjust the spectral distribution by independently setting several monochromatic LED light sources to target growth. Spectrum adaptability required for growth of different plants in the area 700 adjusts the proportion of red light and/or blue light in the multi-segment spectrum, thereby realizing the adjustment of the illumination parameters of the light emitted by the first supplementary light unit 100 .

According to a preferred embodiment, the second supplementary light unit 200 can be equipped with several reflective plates 210 coated with phosphor powder in some positions of the growth area 700, wherein the phosphor powder on the reflective plate 210 is a long-lasting fluorescent material 220 to receive At least including the light emitted by the first supplementary light unit 100 to be excited, so as to realize the release of light of corresponding wavelength. For example, the second supplementary light unit 200 can be provided with a reflector 210 that can create a dark environment for the plants above the roots of the plants in the growth area 700 where the plants are cultivated. It is arranged obliquely towards the first supplementary light unit 100, so as to receive the escaped light passing through gaps such as plant leaves after the first supplementary light unit 100 shines on the corresponding plant with the largest possible light receiving area, so as to reflect the light through the escaped light The long-lasting fluorescent material 220 on the plate 210 is excited to realize the light emission of the second supplementary light unit 200, so that the part of the plant area that the first supplementary light unit 100 cannot irradiate can be supplemented by the second supplementary light unit 200, so that Realize the maximum light-receiving area of the plant.

Plants have phototropism based on the lateral transport of auxin during the growth process, so that the auxin at the top of the plant illuminated by the first supplementary light unit 100 is transported laterally from the light-facing side to the back-light side, and the auxin concentration is higher than that of the light-facing side. The backlit side of the side grows at a faster speed, causing the stems and leaves to bend toward the light source. Among them, the light that mainly affects the phototropism of plants is the blue light of 420-480nm, and its peak is about 445nm, followed by the ultraviolet light of 360-380nm. Light, with a peak at about 370nm. Therefore, the plants in the growth area 700 are affected by the corresponding first light supplement unit 100, and gradually bend toward the position of the first light supplement unit 100, which may further cause the same plant or multiple plants to have different heights or different positions. Overlapping or occlusion of photosynthetic parts such as leaves will affect the photosynthetic efficiency of plants. In the opposite direction of the first direction, the closer to the root of the plant, the higher the possibility of overlap or occlusion, and based on the dominance of the top of the plant makes the growth of the dominant stem compared to the dominant growth of the main stem, and the growth of lateral buds is inhibited by excessively transported auxin The growth is slow or even in a dormant state, so that the leaves closer to the root are more likely to be shaded by the leaves closer to the top according to the growth state and the difference in the light-receiving area of the leaves. The plants in the growth area 700 are illuminated by the second supplementary light unit 200 in a direction opposite to that of the first supplementary light unit 100 , so that the plants in the growth area 700 are illuminated relative to the backlight of the first supplementary light unit 100 . The side can be supplemented by the second supplementary light unit 200, wherein, for each growth area 700 or each plant monomer in each growth area 700, a second supplementary light unit 200 can be provided correspondingly, and the second supplementary light The fluorescent powder coated on the luminous plate of the unit 200 is determined based on the corresponding growth area 700 or the wavelength of the light required by the corresponding plants. Further, the selection of the fluorescent powder on the reflective plate 210 of the second supplementary light unit 200 is based on the plant relative to the first The wavelength of light required by the backlight side of a supplementary light unit 100 is determined. The second supplementary light unit 200 is arranged in the opposite illumination direction relative to the first supplementary light unit 100, so that any plant can form an obliquely symmetrical light receiving situation, thereby avoiding the auxin direction based on the influence of illumination on the distribution of auxin. Excessive accumulation due to excessive delivery of a single site, resulting in growth inhibition at that site.

Generally, the leaves of a plant mainly include three parts: mesophyll, epidermis and leaf veins, wherein the epidermis close to the first light supplement unit 100 is the upper epidermis, whereas the epidermis close to the second light supplement unit 200 is the lower epidermis, the upper and lower The epidermis wraps the mesophyll and veins. In the mesophyll, the palisade tissue close to the upper epidermis is in the shape of a long column, arranged tightly and neatly, and its long axis is often perpendicular to the leaf surface in a palisade shape, while the spongy tissue close to the lower epidermis is irregular in shape, loosely arranged, and the intercellular space is large and wide Many, spongy. Both palisade tissue and spongy tissue contain chloroplasts for photosynthesis, and the photosynthetic intensity of spongy tissue with chloroplasts is lower than that of palisade tissue with more and larger chloroplasts. Therefore, based on the shape and arrangement of palisade tissue cells, palisade tissue becomes the main site of photosynthesis in leaves, while spongy tissue becomes the secondary site of photosynthesis. But when the light emitted by the first supplementary light unit 100 is blocked and cannot be irradiated to the chloroplasts of the palisade tissue through the upper epidermis, the second supplementary light unit 200 can be used to illuminate the chloroplasts of the spongy tissue through the lower surface to ensure the photosynthesis of the leaves. Wherein, when the light emitted by the second supplementary light unit 200 is irradiated on the spongy tissue through the lower surface, part of the light can pass through the spongy tissue and enter the palisade tissue, so that the chloroplasts in the palisade tissue face the direction of incoming light with a flat and wide surface. Dispersed in the cytoplasm, and the dispersed area in the cytoplasm is as close as possible to the sponge tissue, so as to make up for the lack of photosynthetic ability of the sponge tissue chloroplast.

Further, the second supplementary light unit 200 can be connected with a monitoring unit 300, so that the monitoring unit 300 can monitor the situation of the excitation light of phosphor powder on the reflector 210 of the second supplementary light unit 200, so as to calculate based on the situation of the excitation light The condition of the light irradiated on the reflector 210, that is, the condition that the first supplementary light unit 100 illuminates the plants and the escaped light passing through the gaps such as plant stems and leaves is captured by the second supplementary light unit 200, from which it can be deduced that the plants The gap between stems and leaves, and compare it with the sample situation based on big data, historical data and/or empirical data, and then judge the growth status of leaves and plants.

Preferably, the monitoring unit 300 can also be used to obtain corresponding environmental parameters for the environmental indicators in the growth area 700, so as to judge whether the plants in the growth area 700 are in a normal growth environment, wherein the environmental parameters can include ambient light parameters, ambient temperature parameters, ambient humidity parameters, nutrient solution parameters, etc. For the parameters of the nutrient solution, parameters such as pH, dissolved oxygen content, and concentration of the nutrient solution can be collected to ensure sufficient nutrients for the plant. Among them, an appropriate amount of auxin can be added to the nutrient solution so that the auxin concentration of each part of the plant is based on the double-sided light. The effect is within the scope of promoting growth, so as to ensure the rapid growth of various parts of the plant.

Preferably, the monitoring unit 300 can transmit the collected monitoring data to the computing unit 400 to complete data processing, so as to judge the growth state of the corresponding plant and the influence of environmental factors on the plant growth process. For example, the monitoring unit 300 transmits the obtained light excited on the reflective plate 210 of the second supplementary light unit 200 to the computing unit 400, so as to calculate the stem-leaf gap of the corresponding plant through calculation processing, so as to determine the location of the corresponding plant. Growth status, among which, plant growth status can be divided into seedling raising period, growth promotion period, quality formation period and quality accumulation period, etc. Further, the computing unit 400 can judge the real-time growth state of the plant based on the sample situation of the corresponding plant in big data, historical data and/or empirical data, so as to determine that the growth state of the corresponding plant in the current growth environment is advanced growth , normal growth or delayed growth. Preferably, the computing unit 400 can combine the environmental parameters obtained for each environmental index when judging the plant growth state to determine the situation of the environmental factors on the corresponding plant growth process, and can judge the environmental parameters that need to be adjusted when the plant growth state is abnormal , wherein the abnormal growth state of the plant can be judged based on the difference between the real-time monitoring data at different growth stages and the preset growth threshold. If the computing unit 400 determines that the growth state of the plant is abnormal or the current growth environment index is abnormal, it can issue a warning signal.

Preferably, the computing unit 400 can be signal-connected to the terminal 500, so that the computing data and/or warning signal can be displayed and/or notified to the user in the form of sending to the terminal 500, and the user can also respond to the information fed back by the computing unit 400 to input The entire breeding site is regulated by the way of automatic adjustment of control instructions or manual manipulation of scheduling staff. Further, the computing unit 400 can realize data interoperability with the cloud database 600 based on the Internet, so that the computing unit 400 can download various sample data corresponding to plants from the cloud database 600, and can also use the computing data acquired in real time as a new time sequence The sample data is uploaded to the cloud database 600, so that other computing units 400 connected to the cloud database 600 can download it as candidate sample data at least in the next time sequence.

Preferably, the calculation unit 400 is able to form and update the irradiation time and light intensity of different growth stages such as the seedling raising period, the growth promotion period, the quality formation period and the quality accumulation period based on the excited energy of the fluorescent powder on the reflector 210 acquired by the monitoring unit 300. Intensity light recipe database. The computing unit 400 can store the light formula database in the storage space and/or upload it to the cloud database 600, so that it can be used as the historical data when cultivating the same type of plants with the same or similar environmental parameters in at least the next time sequence. The samples are exported, and/or so that other computing units 400 can be downloaded as samples of big data when cultivating the same type of plants with the same or similar environmental parameters in at least the next time sequence.

The present invention also discloses a supplementary light method based on a long afterglow luminescent material. The supplementary light method adopts any of the aforementioned supplementary light devices. The supplementary light method can be based on the combination of active supplementary light and driven supplementary light from The plants in the growth area 700 are illuminated in two opposite directions, so that the plants can receive proper light to ensure the quality and efficiency of growth. The active supplementary light can be an LED light source that starts to emit light when the power is turned on and stops when the power is turned off, and the passive supplementary light can be a long-lasting light source that emits light based on the light emitted by other light sources. Therefore, the first supplementary light unit 100 may be in the form of active supplementary light and/or a combination of active supplementary light and driven supplementary light, the second supplementary light unit 200 is only in the form of passive supplementary light, and the second supplementary light unit 200 at least The passive supplementary light can be performed based on the light emitted by the active supplementary light form of the first supplementary light unit 100 .

It should be noted that the above specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the present invention, and these solutions also belong to the scope of the disclosure of the present invention and fall within the scope of this disclosure. within the scope of protection of the invention. Those skilled in the art should understand that the description and drawings of the present invention are illustrative rather than limiting to the claims. The protection scope of the present invention is defined by the claims and their equivalents. The description of the present invention contains a number of inventive concepts, such as "preferably", "according to a preferred embodiment" or "optionally" all indicate that the corresponding paragraph discloses an independent concept, and the applicant reserves the right to propose a division based on each inventive concept right to apply. Throughout the text, the features introduced by "preferably" are only optional, and should not be interpreted as having to be set. Therefore, the applicant reserves the right to waive or delete relevant preferred features at any time.

Claims (6)

1. A light filling device based on long afterglow luminescent material, it includes:

a first fill-in light unit (100) capable of illuminating the growth region (700) at least when energized,

a second fill-in light unit (200) configurable as a reflector (210) coated with a long persistence phosphor material (220),

it is characterized in that the preparation method is characterized in that,

the reflector (210) is obliquely arranged in a manner that one side coated with the long afterglow fluorescent material (220) faces the first light supplement unit (100), and the escaping light irradiated on the growth region (700) by the first light supplement unit (100) and passing through the gap structure of the target object (800) is received in a manner of increasing the light receiving area to complete the excitation of the long afterglow fluorescent material (220), so that the long afterglow fluorescent material (220) can be provided with the light of a long afterglow spectrum in the irradiation direction relative to the first light supplement unit (100) for the growth region (700) at least when the first light supplement unit (100) is powered off,

the first supplementary lighting unit (100) can be arranged in the air of one or more growth areas (700) along a first direction to cover the target object (800) needing illumination in the corresponding growth area (700), the second supplementary lighting unit (200) can be arranged in the growth area (700) relative to the first supplementary lighting unit (100) based on the position of the target object (800),

the first light supplement unit (100) can be at least provided with a long afterglow type LED light source formed by combining the long afterglow fluorescent material (220) and an LED fluorescent material, so that the long afterglow fluorescent material (220) of the first light supplement unit (100) is excited by light emitted by the LED fluorescent material when the first light supplement unit (100) is powered on, the first light supplement unit (100) can respectively emit light rays with different spectrums when the power supply is connected and disconnected,

the first light supplement unit (100) can be prepared by dry-grinding and uniformly mixing the long-afterglow fluorescent material (220) and encapsulating the mixture on the corresponding LED chip of the LED fluorescent material through epoxy resin,

wherein the selection of the kind of the long-lasting fluorescent material (220) can be determined based on the wavelength of the light required for the growth of the target object (800),

the first light supplement unit (100) can be configured with a plurality of independent LED light sources to at least emit pink light combined by red light, blue light and/or red blue light, so that the spectral distribution of light emitted by the long afterglow type LED light sources can be adjusted.

2. A light supplement device according to claim 1, wherein when the first light supplement unit (100) excites the long-afterglow fluorescent material (220) of the second light supplement unit (200), the monitoring unit (300) can monitor the excitation light parameters of the long-afterglow fluorescent material (220) to transmit the monitoring data to the arithmetic unit (400) when the first light supplement unit (100) passes through the gap structure of the target object (800).

3. The light supplement device according to claim 2, wherein the arithmetic unit (400) is capable of calculating the growth state of the target object (800) and the influence of environmental factors on the growth process of the target object (800) by calculating the size of the gap structure based on the excitation light parameters of the second light supplement unit (200) in combination with the environmental parameters collected by the monitoring unit (300) for the environmental indicators in the growth area (700).

4. The lighting apparatus according to claim 3, wherein the computing unit (400) is communicatively connected to a cloud database (600) to download sample data of a corresponding target object (800) in the cloud database (600), and is capable of uploading the computing data with the environmental parameters acquired in real time as new time-ordered sample data to the cloud database (600).

5. A light supplementing device according to claim 4, wherein the arithmetic unit (400) is capable of creating and updating a light recipe database of illumination duration and illumination intensity of the corresponding target object (800) in different growth phases based on the excitation light parameters obtained by the monitoring unit (300),

the arithmetic unit (400) can perform data interaction between the optical recipe database and the cloud database (600).

6. A light supplement method based on a long afterglow luminescent material, characterized in that the light supplement method adopts the light supplement device of one of the preceding claims 1 to 5,

the light supplement method can illuminate the target object (800) in the growth area (700) from two opposite directions based on a mode of combining active light supplement and driven light supplement so as to guarantee the light receiving condition and the growth condition of the target object (800).

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