Supplementary lighting system and method for tomato close planting cultivation

Abstract

The invention relates to a tomato close planting cultivation light supplementing system and method. The system comprises a cultivation framework; the detection unit is used for acquiring light receiving information of the tomatoes; the first reflecting plates are installed outside the cultivation framework and used for reflecting an external light source from the cultivation framework to tomatoes planted in the cultivation framework, the second reflecting plates are installed in the cultivation framework and adjacent to the position where the tomatoes are planted, and used for reflecting the external light source and the reflected light sources of the first reflecting plates, and the processor is arranged in the cultivation framework. The light receiving information is light intensity information received by the tomatoes, and the processor is configured to control the rotation angle of the first reflecting plate and / or the second reflecting plate so as to reflect the light source to the to-be-supplemented light area when it is detected that the light intensity is lower than a preset light intensity range. The problems that tomatoes in the cultivation layer below the top layer are uneven in light receiving, and the utilization rate of light resources is low can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of plant supplementary lighting, in particular to a supplementary lighting system and a method for densely planted tomatoes. Background Art

[0002] With the growth of population and economic development, the demand for tomatoes, one of the main vegetables, continues to grow. In order to meet the market demand for reliable and fresh tomatoes, it is necessary to optimize the cultivation method of tomatoes and reduce the impact of adverse factors in the growth process of tomatoes, thereby increasing the yield of tomatoes and meeting the demand for continuous listing of tomatoes. In recent years, the rise of facility agriculture and plant factories has increased the total agricultural output value by solving the problems caused by natural constraints (temperature, light, humidity, soil, etc.) in the agricultural production process.

[0003] During tomato cultivation, a large amount of space is occupied. In order to improve the utilization rate of the planting space, the existing technology uses multi-layer three-dimensional cultivation to make reasonable use of the planting space. Although the cultivation space is fully utilized in the vertical direction, in order to reduce the squeezing or overlapping of tomato leaves in the horizontal direction, adjacent tomatoes need to be separated by a specific distance to avoid the tomatoes interfering with each other in the physical space and reducing their photosynthetic efficiency. The three-dimensional dense planting cultivation rack avoids the mutual interference of tomatoes in the physical space and improves the space utilization rate of the cultivation room. However, the fill light in the cultivation space supplies light from the top of the tomatoes, and the tomatoes in each cultivation layer are located in different spatial positions. The irradiation range of natural light or artificial light to the cultivation layer is limited. Therefore, the light intensity and illumination time received by the tomatoes in each cultivation layer vary greatly.

[0004] For example, the patent application with publication number CN114286480A provides a supplementary lighting system for a plant factory, including: a supplementary lighting control system for regulating the light quality, light intensity and photoperiod changes of the light source illumination parameter system; a monitoring unit for identifying different growth stages of plants; an information analysis module for identifying the current lighting environment of plants; a control module for collecting information transmitted by the monitoring unit and the information analysis module; a database for comparing the information collected by the control module to determine the growth stage of the plant; a planting platform for placing plants; an artificial light source for supplementary lighting for plants; and a lifting mechanism for adjusting the position of the artificial light source. The technical solution of this patent application uses a lifting mechanism to drive the artificial light source to achieve regular movement of the artificial light source in a rectangular coordinate system. For the growth of tomatoes in a three-dimensional cultivation layer, the lighting conditions provided by the artificial light source are suitable for the tomatoes at the top of the cultivation layer, and the tomatoes below the top in the vertical direction are shielded, that is, the tomatoes below the top cannot receive effective light. In addition, the prior art usually installs supplementary lights in each densely planted cultivation layer to provide the light conditions required for normal photosynthesis for tomatoes that are poorly exposed to light. However, there are requirements for the distance between the supplementary lights and the plants. Too close distance may cause tomato burns, and increasing the distance will reduce the number of plants in the cultivation space. On the other hand, in the case of large-scale densely planted tomato cultivation, the energy consumption required to install supplementary lights separately in each cultivation layer is huge.

[0005] Therefore, the light supplement system of the tomato dense planting cultivation rack in the prior art cannot solve the problem of accurate light supplement and control of light supplement cost, and the light supplement system of tomato dense planting cultivation has become a research direction with economic value.

[0006] In addition, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making the present invention, but due to space limitations, not all details and contents are listed in detail. However, this does not mean that the present invention does not have the characteristics of these prior arts. On the contrary, the present invention already has all the characteristics of the prior art, and the applicant reserves the right to add relevant prior art to the background technology. Summary of the invention

[0007] Light is an important factor affecting the growth and development of plants and is crucial in the photosynthesis of plants. The current greenhouses or plant factories can overcome the impact of climate change on plant growth to a certain extent, such as using supplementary lights to meet the needs of plants for lighting conditions. Tomato is a light-loving crop with weak light intensity, and its photosynthesis is significantly reduced. Therefore, good lighting conditions need to be maintained during the cultivation process to maintain its normal growth and development, thereby achieving the purpose of increasing yield and improving quality. However, in order to make full use of the cultivation space, three-dimensional cultivation layers are currently used to cultivate tomatoes to increase the number of plants. The light source supply method in the three-dimensional cultivation layer space generally includes installing supplementary lights on the top and installing supplementary lights on each cultivation layer. Installing supplementary lights on the top of the cultivation space is more effective for tomatoes on the top layer, while tomatoes in the cultivation layer below the top layer will be blocked and cannot obtain the corresponding light source. The tomatoes are unevenly illuminated and the utilization rate of light resources is low. Therefore, tomatoes in the lower layer or inside cannot fully photosynthesize. Uneven illumination can also cause uneven water use. Areas close to the light source or with high illumination dry faster than areas far from the light source or with low illumination. Installing supplementary lights in each cultivation layer will greatly increase the energy consumption of the cultivation system. In particular, tomatoes require 11 to 16 hours of illumination per day. Turning on a large number of supplementary lights at the same time and providing light for a long time will increase the operating load of the cultivation system. Therefore, providing a supplementary lighting system for densely planted tomatoes has become a research direction with economic value.

[0008] In view of the shortcomings of the prior art, the present invention provides a tomato dense planting cultivation lighting system, comprising two cultivation frames for planting tomatoes;

[0009] A detection unit for obtaining light receiving information of tomatoes;

[0010] A plurality of first reflective plates installed outside the cultivation frame to reflect the external light source from the cultivation frame to the tomatoes planted inside the cultivation frame,

[0011] A plurality of second reflective plates installed in the cultivation frame adjacent to the position where tomatoes are planted to reflect the external light source and the reflected light source of the first reflective plate, and

[0012] A processor connected to the detection unit, the first reflector, and the second reflector signal, wherein:

[0013] The light receiving information includes the light intensity information and light source band information received by the tomato.

[0014] The processor is configured as:

[0015] When it is detected that the light intensity is lower than the preset light intensity range, the rotation angle of the first reflector and / or the second reflector is controlled to reflect the light source to the area to be supplemented with light.

[0016] Beneficial effects of this technical solution:

[0017] The present application utilizes the principle of light reflection to reflect external natural light or light from an artificial light supplement unit to tomatoes to promote photosynthesis of tomatoes. First, a first reflector installed on the outside of a cultivation frame is used to reflect the external light source from the cultivation frame to the area where the tomatoes to be supplemented are located, and the light receiving information of the tomatoes at this time is detected. When it is detected that the light intensity of the area where the tomatoes to be supplemented is located is still less than the preset light intensity range, the rotation angle of the second reflector installed inside the cultivation frame is controlled so that the second reflector reflects the natural light from the outside, the light from the artificial light supplement unit, and the reflected light of the first reflector to the tomatoes.

[0018] In traditional three-dimensional cultivation technology, the light conditions of tomatoes in the middle and lower cultivation layers are ignored. Tomatoes are large canopy crops, and their yield is related to the total light interception of the canopy. When tomatoes growing in the upper or top layers grow to a certain stage, their crown width increases, while the gaps between adjacent tomatoes decrease, and the light that can reach the middle or lower parts from external light sources decreases, affecting the photosynthesis of the tomato leaves in the middle and lower parts, which in turn leads to a decrease in the final yield. When tomatoes enter the adult stage, the shaded surface of the leaves in the middle and lower parts increases, and the light received in the middle and lower parts decreases, especially for the active leaves in the middle and lower parts. When the leaves that can photosynthesize are blocked and cannot photosynthesize, the overall photosynthetic efficiency of tomatoes decreases. Therefore, the traditional supplementary lighting system cannot fully utilize the photosynthesis of tomatoes in the middle and lower parts of the cultivation framework. Especially when the leaves are severely shaded, the photosynthetic efficiency of the canopy is greatly affected.

[0019] When cultivating tomatoes, this solution uses the first reflector to penetrate the external light source into the tomato leaves in the middle and lower part of the cultivation frame. At the same time, a second reflector is set inside the cultivation frame (between tomatoes) to increase the external light source penetration rate, so that the tomatoes in the cultivation frame as a whole receive light evenly, thereby improving the overall photosynthetic efficiency. In addition, this solution uses the method of using the reflector to reflect the external natural light or artificial light multiple times to reduce the number of light sources, reduce the complexity of the cultivation system, significantly reduce the use cost of the dense planting cultivation system, and save energy resources.

[0020] Preferably, the supplementary light system includes a plurality of detection units to obtain light information around tomatoes planted at different positions. Preferably, the detection units include at least a plurality of first detection units for detecting light intensity information outside the cultivation frame and a plurality of second detection units for detecting light intensity information inside the cultivation frame, so as to obtain light conditions of tomatoes at different spatial positions.

[0021] The beneficial effects of the present technical solution are as follows: the tomatoes planted in the cultivation skeleton have significant differences in spatial positions, and thus the distances between the illumination source and each tomato in the supplementary light system also have significant differences. Different detection units are respectively arranged at different spatial positions of the supplementary light system to obtain more accurate light receiving information of tomatoes in different cultivation positions. For example, for the tomatoes on the upper layer of the cultivation skeleton, they are closer to the light source, and the entire tomato is exposed to the illumination conditions, so they receive more light; while for the tomatoes on the lower part of the cultivation skeleton, they are farther from the light source, and are blocked by the tomatoes on the upper layer, so they receive less light. Therefore, the light receiving conditions of tomatoes in different spatial positions are significantly different. The present solution can obtain more accurate light receiving information of tomatoes by arranging the detection units at different spatial positions, especially by arranging the first detection unit outside the cultivation skeleton and the second detection unit inside the cultivation skeleton.

[0022] On the other hand, the light information of tomatoes obtained by different detection units can be used as a basis for adjusting the rotation direction of the first reflector and / or the second reflector. For example, when the light intensity outside the cultivation frame is within the preset light intensity range, and the light intensity of a certain area inside the cultivation frame is lower than the lower limit of the preset light intensity range, at this time, the processor controls the first reflector to rotate toward the area to be lighted inside the cultivation frame, and forms a first light path; when the light intensity of the area to be lighted incident on the cultivation frame inside the first light path is still lower than the lower limit of the preset light intensity range, the processor can control the second reflector to rotate, so as to reflect the light reflected by the external light source, the light-filling unit and the first reflector to the tomato part of the area to be lighted, and perform precise light-filling processing.

[0023] Preferably, when the light intensity outside the cultivation frame detected by the first detection unit is within a preset light intensity range or exceeds an upper limit of the preset light intensity range, the processor controls the second detection unit to start working to detect the light intensity inside the cultivation frame.

[0024] The beneficial effects of the present technical solution are as follows: Since the first detection unit is arranged outside the cultivation skeleton, it is closer to the light source and is not blocked by tomatoes. Compared with the second detection unit which is farther from the light source and blocked by tomatoes, the light intensity detected by the first detection unit is greater than the light intensity detected by the second detection unit. If the light intensity measured by the first detection unit is less than the lower limit of the preset light intensity range, the light intensity detected by the second detection unit must be less than the lower limit of the preset light intensity range. Therefore, the second detection unit is triggered when the light intensity outside the cultivation skeleton detected by the first detection unit is within the preset light intensity range or exceeds the upper limit of the preset light intensity range. Therefore, the working time of the second detection unit is reduced, which can not only reduce the energy consumption of the fill light system, but also reduce the data processing content of the processor, thereby reducing the operating load of the fill light system as a whole.

[0025] According to a preferred embodiment, when the light intensity outside the cultivation frame detected by the first detection unit is lower than a preset light intensity range, the processor controls the first reflector to rotate to form a first incident light path, thereby performing a fill light operation on the area to be fill lighted of at least one light-requiring tomato.

[0026] According to a preferred embodiment, when the light intensity outside the cultivation skeleton detected by the first detection unit is within a preset light intensity range and the light intensity inside the cultivation skeleton detected by the second detection unit is lower than the lower limit of the preset light intensity range, the processor controls the first reflector to rotate to form a first incident light path, and the processor controls the second reflector to rotate in a manner to receive the first incident light path of the first reflector to form a first reflected light path, thereby performing a fill light operation on the area to be fill light inside the cultivation skeleton.

[0027] The beneficial effect of the technical solution is that when the light intensity outside the cultivation frame detected by the first detection unit is within the preset light intensity range and the light intensity inside the cultivation frame detected by the second detection unit is lower than the lower limit of the preset light intensity range, it means that the tomatoes planted on the upper layer or the periphery of the cultivation frame are under normal light conditions, and it is not necessary to supplement light for the tomatoes on the upper layer or the periphery of the cultivation frame, but it is necessary to supplement light for the tomatoes planted inside the cultivation frame. The supplement light method for the tomatoes inside the cultivation frame is as follows: first, the first reflector is controlled to rotate to reflect the external light source into the area to be supplemented light inside the cultivation frame. When the light intensity inside the cultivation frame is still less than the lower limit of the preset light intensity range, the processor controls the second reflector to rotate to reflect the external light source, the light source of the supplement light unit, the first incident light reflected by the first reflector, and the reflected light of the second reflector to the area to be supplemented light, so that each spatial position of the cultivation frame is evenly illuminated, and the light-deficient tomato growth part is accurately supplemented, especially the tomatoes in the middle and lower part of the cultivation frame, which can receive sufficient light under the action of the first reflector and the second reflector. This solution makes full use of the photosynthesis of tomato leaves in the middle and lower parts of the cultivation frame to achieve the purpose of improving the photosynthetic efficiency of tomatoes as a whole.

[0028] According to a preferred embodiment, when the light intensity outside the cultivation skeleton detected by the first detection unit is greater than the upper limit of the preset light intensity range, and the light intensity inside the cultivation skeleton detected by the second detection unit is lower than the lower limit of the preset light intensity range, the processor reduces the light intensity of the fill light unit until the light intensity outside the cultivation skeleton is within the preset light intensity range, wherein,

[0029] When the light intensity inside the cultivation skeleton is lower than the lower limit of the preset light intensity range, the processor controls the first reflector to rotate to form a first incident light path, and the processor controls the second reflector to rotate in a manner to receive the first incident light path of the first reflector to form a first reflected light path, thereby performing a fill light operation on the area to be fill light inside the cultivation skeleton.

[0030] Beneficial effects of the technical solution: For the leaves of tomatoes at the top or periphery of the cultivation skeleton, their light saturation point needs to be considered. When the light intensity outside the cultivation skeleton is greater than the upper limit of the preset light intensity range, it means that the light intensity of the external light or the light supplement unit exceeds the optimal range for tomato photosynthesis. Under this light condition, the growth of tomatoes may be inhibited, and even tomato leaves may be burned or tomatoes may die. Therefore, in this case, it is first necessary to reduce the light intensity to within the preset light intensity range to avoid damaging the tomatoes. When the light intensity outside the cultivation skeleton is adjusted to within the preset light intensity range and the light intensity inside the cultivation skeleton is lower than the lower limit of the preset light intensity range, the first reflector and / or the second reflector are rotated to supplement the light in the area to be supplemented (middle and lower part) of the cultivation skeleton. When this solution is supplemented, it is considered that the light received by the tomatoes outside or at the top of the cultivation skeleton does not exceed the upper limit of the preset light intensity range, and the light received by the tomatoes in the middle and lower part is not lower than the lower limit of the light range. Therefore, the photosynthetic efficiency of the overall tomatoes is maximized.

[0031] According to a preferred embodiment, when the light intensity outside the cultivation skeleton detected by the first detection unit is greater than the upper limit of the preset light intensity range, and the light intensity inside the cultivation skeleton detected by the second detection unit is within the preset light intensity range, the processor controls the first reflector to rotate in a manner of reflecting the external light source to the surrounding of the cultivation skeleton until the light intensity outside the cultivation skeleton is within the preset light intensity range, wherein,

[0032] When the light intensity inside the cultivation frame is lower than the lower limit of the preset light intensity range, the processor controls the first reflector to rotate to form a first incident light path, and the processor controls the second reflector to rotate in a manner of receiving the first incident light path of the first reflector to form a first reflected light path, thereby performing a fill light operation on the area to be filled light inside the cultivation frame. The first reflector reflects the external light source to the surrounding of the cultivation frame to reduce the light reaching the tomatoes and avoid damage to the tomatoes.

[0033] Preferably, the supplementary light system further comprises an image acquisition unit for acquiring the growth stage of tomatoes.

[0034] Preferably, the processor obtains a preset light intensity range required for tomatoes at the growth stage based on the growth stage of the tomatoes, so as to adjust the light intensity of the fill light unit, the rotation mode of the first reflector plate and / or the rotation mode of the second reflector plate, so that tomatoes at different growth stages are within the preset light intensity range.

[0035] Preferably, the detection unit can be a light intensity measuring instrument. Preferably, the detection unit can be a light sensor.

[0036] Preferably, the light receiving information also includes light source band information.

[0037] Preferably, the fill light system further includes a fill light unit.

[0038] Preferably, the fill light unit includes at least a first fill light unit capable of providing a first-band light of an effective spectrum for photosynthesis of tomatoes and a second fill light unit for adjusting a second-band light of effective ingredients in tomatoes, wherein the first-band light provided by the first fill light unit has a different peak value from the second-band light provided by the second fill light unit.

[0039] Preferably, the first fill light unit and the second fill light unit are independently controlled by a processor.

[0040] Preferably, the light in the first wavelength band provided by the first fill light unit is photosynthetically active radiation.

[0041] Preferably, the first band light provided by the first fill light unit is a light source having a spectrum similar to that of sunlight in the visible light band. Specifically, the first band light provided by the first fill light unit has at least two peaks in the band of 380 to 760 nm. Specifically, the first band light has a peak (460 nm blue light) in the band of about 420 nm to about 500 nm, and another peak (630 nm red light) in the band of about 600 nm to about 700 nm.

[0042] Preferably, the second wavelength band light provided by the second fill light unit can be purple light, blue light or ultraviolet light. Specifically, the second wavelength band light provided by the second fill light unit has at least two peaks in the wavelength band of 400-420 nm.

[0043] According to a preferred embodiment, based on the growth stage of tomatoes, the processor 300 adjusts the coordination mode of the first fill light unit and the second fill light unit to promote the photosynthesis of tomatoes at a specific growth stage.

[0044] Preferably, the cultivation frame includes a liftable support so that adjacent tomatoes are staggered in the vertical space to reduce interference between adjacent tomatoes.

[0045] Preferably, the first reflector and the second reflector are installed in the fill light system via a universal shaft. Preferably, the universal shaft has a driving member. Preferably, the processor controls the driving member to adjust the movement of the universal shaft, thereby changing the rotation angle of the first reflector and the second reflector.

[0046] The present invention also provides a method for supplementing light for densely planted tomatoes, comprising the following steps:

[0047] Detect the light information of tomatoes in the cultivation frame,

[0048] Determine the area to be filled with light through the light receiving information.

[0049] The rotation angles of the first reflector and the second reflector are adjusted so that the light intensity of the area to be supplemented with light in the cultivation framework space is within a preset light intensity range. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is a simplified schematic diagram of module connection relationships of a fill light system according to a preferred embodiment of the present invention;

[0051] Figure 2 It is a schematic diagram of the overall structure of a fill light system according to a preferred embodiment of the present invention;

[0052] Figure 3 It is a schematic diagram of the fill light path of the first reflector and the second reflector in a preferred embodiment provided by the present invention.

[0053] Reference numerals list

[0054] 100: tomato; 200: first reflector; 210: second reflector; 300: processor; 400: detection unit; 410: image acquisition unit; 500: fill light unit. DETAILED DESCRIPTION

[0055] The following is a detailed description with reference to the accompanying drawings.

[0056] The outside of the cultivation frame refers to the location outside the range where the cultivation frame is placed within the system.

[0057] The external light source refers to the light source in the system from the fill light unit 500 or natural light.

[0058] The interior of the cultivation frame refers to the positions between the cultivation frames in the system, the tomatoes 100 planted in the cultivation frames, or the positions around the tomatoes 100 planted in the cultivation frames.

[0059] The adjacent position refers to a position close to the tomato 100 in the cultivation frame, or a position between tomatoes.

[0060] The preset light intensity range refers to the range of light intensity variation that allows Tomato 100 to achieve optimal photosynthetic efficiency and promote increased production and income of Tomato 100.

[0061] The preset light source wavelength band range refers to a light source wavelength band variation range that promotes the photosynthesis of the tomatoes 100 to achieve increased production and increased income of the tomatoes 100.

[0062] Example 1

[0063] This embodiment provides a tomato dense planting cultivation lighting system. Figure 2 The light-supplementing system comprises: a cultivation frame for planting tomatoes 100; a detection unit 400 for obtaining light-receiving information of tomatoes 100; a plurality of first reflectors 200 installed on the outside of the cultivation frame to reflect external light sources from the cultivation frame to tomatoes 100 planted inside the cultivation frame, a plurality of second reflectors 210 installed in the cultivation frame adjacent to the tomatoes 100 planted to reflect external light sources and reflected light sources of the first reflectors 200, and a processor 300 connected to the detection unit 400, the first reflectors 200 and the second reflectors 210 by signals, wherein the light-receiving information is light intensity information received by the tomatoes 100, wherein the processor 300 is configured to: when it is detected that the light intensity is lower than a preset light intensity range, control the rotation angle of the first reflector 200 and / or the second reflector 210 to reflect the light source to the area to be light-supplemented.

[0064] Preferably, the detection unit 400 and the processor 300 can be connected by wireless connection. Preferably, the detection unit 400 and the processor 300 can also be connected by Bluetooth.

[0065] Preferably, the first reflector 200 and the second reflector 210 are installed in the fill light system via a universal shaft. Preferably, the universal shaft has a driving member. Preferably, the processor 300 adjusts the movement of the universal shaft by controlling the driving member, thereby changing the rotation angle of the first reflector 200 and the second reflector 210.

[0066] Preferably, the cultivation frame includes a liftable support. The liftable support can stagger adjacent tomatoes 100 in the vertical space to reduce interference between adjacent tomatoes 100. Figures 2-3 As shown. The liftable support moves up or down in the vertical direction, so that adjacent tomatoes 100 are staggered in the vertical space, reducing the interference between the canopies of tomatoes 100. In addition, the vertical space staggering provides a larger gap between adjacent tomatoes 100, so that the external light source can effectively reach the inside of the cultivation frame, thereby ensuring that the tomatoes 100 in the middle and lower parts of the cultivation frame can receive sufficient light.

[0067] The tomatoes 100 on the top of the cultivation frame are directly exposed to the supplementary light unit 500 or external natural light, while the tomatoes 100 in the middle and lower parts are blocked or farther away from the light source, so they receive less light than the tomatoes 100 on the top. The technical solution provided in this embodiment can ensure that the tomatoes 100 in the cultivation frame are under suitable lighting conditions, further improve the fixed yield of tomatoes 100, significantly improve the economic value of tomatoes 100, and the dense planting method greatly improves the effective utilization rate of the tomato 100 cultivation rack.

[0068] Preferably, the supplementary light system includes a plurality of detection units 400 to obtain light information around tomatoes 100 planted at different positions. Preferably, the detection unit 400 includes at least a plurality of first detection units for detecting light intensity information outside the cultivation frame and a plurality of second detection units for detecting light intensity information inside the cultivation frame, so as to obtain light conditions of tomatoes 100 at different spatial positions.

[0069] Preferably, when the light intensity outside the cultivation skeleton detected by the first detection unit is within the preset light intensity range or exceeds the upper limit of the preset light intensity range, the processor 300 controls the second detection unit to start working to detect the light intensity inside the cultivation skeleton. The tomatoes 100 planted outside or on the upper part (top) of the cultivation skeleton are not blocked and can directly receive external light, while the tomatoes 100 planted in the middle and lower part of the cultivation skeleton are inevitably blocked from receiving light. Therefore, when the light intensity outside the cultivation skeleton is lower than the lower limit of the preset light intensity range, the light intensity inside the cultivation skeleton must also be lower than the lower limit of the preset light intensity range. When the light intensity outside the cultivation skeleton is within the preset light intensity range or exceeds the upper limit of the preset light intensity range, the light intensity inside the cultivation skeleton may be within the light intensity range.

[0070] Figure 1 A simplified schematic diagram of module connection relationships for the fill light system provided in this embodiment.

[0071] According to a preferred embodiment, when the light intensity outside the cultivation skeleton detected by the first detection unit is lower than the lower limit of the preset light intensity range, the processor 300 controls the first reflector 200 to rotate to form a first incident light path, thereby performing a light supplement operation on the area to be supplemented with light of at least one light-requiring tomato 100. For example, in the initial state, the plane where the first reflector 200 is located is parallel to the ground. When the first detection unit detects that the light intensity outside the cultivation skeleton is lower than the lower limit of the preset light intensity range, the processor 300 controls the first reflector 200 to rotate so that the placement angle between the first reflector 200 and the external light source is 45°. When the external light source irradiates the first reflector 200 at an incident angle of 45°, the reflected light will leave the first reflector 200 at an angle of 135° and irradiate the area to be supplemented with light. The placement angle in this embodiment refers to the angle between the incident light and the plane on the incident side of the first reflector 200 and / or the second reflector 210, and the reflected light angle refers to the angle between the reflected light and the plane on the incident side of the first reflector 200 and / or the second reflector 210. It should be understood that the rotation angle of the first reflector 200 in this embodiment is only one example, and the rotation angle can also be any other angle that can guide the reflected light to the area to be supplemented with light.

[0072] According to a preferred embodiment, when the light intensity outside the cultivation skeleton detected by the first detection unit is within a preset light intensity range, and the light intensity inside the cultivation skeleton detected by the second detection unit is lower than the lower limit of the preset light intensity range, the processor 300 controls the first reflection plate 200 to rotate to form a first incident light path, and the processor 300 controls the second reflection plate 210 to rotate in a manner of receiving the first incident light path of the first reflection plate 200 to form a first reflected light path, thereby performing a fill light operation on the area to be fill light inside the cultivation skeleton, such as Figure 3As shown. For example, after the first reflector 200 is rotated from the initial state to a placement angle of 60° with the external light source, a first reflective light path is formed. After the outgoing light leaves the first reflector 200 at an angle of 120°, it is incident on the second reflector 210 at an angle of 45°, and finally leaves the second reflector 210 at an angle of 135° to irradiate the tomatoes 100 in the middle and lower part of the cultivation skeleton. It should be understood that the angle in this embodiment is only an embodiment provided, and is not a limitation on the rotation angle or installation position of the first reflector 200 and / or the second reflector 210. The rotation angles of the several first reflectors 200 and the second reflectors 210 included in the fill light system are determined according to the position of the area to be fill lighted. Compared with the prior art, the advantage of this arrangement is that in the window opening system of the glass greenhouse, the external light source can be a natural environment light source from the outside, or it can be a fill light unit 500 outside the range of the cultivation skeleton. When the external light source is sufficient, the fill light unit 500 may not be activated, and the first reflector 200 and / or the second reflector 210 may be used in combination with the natural environment light source to directly provide light for the tomatoes 100. In addition, since the cultivation frame includes a liftable bracket, tomatoes 100 at the same height can be at different heights through the lift bracket, so that sufficient gaps are left between adjacent tomatoes 100. The sufficient gaps allow the incident light from the external natural environment light source and the first reflector 200 to enter the middle and lower areas, reducing the shielding of the middle and lower tomatoes 100 by the upper tomatoes 100. At the same time, since the gap is large enough, the incident light from the first reflector 200 can also smoothly reach the area to be filled with light and / or the second reflector 210.

[0073] According to a preferred embodiment, when the light intensity outside the cultivation skeleton detected by the first detection unit is greater than the upper limit of the preset light intensity range, and the light intensity inside the cultivation skeleton detected by the second detection unit is lower than the lower limit of the preset light intensity range, the processor 300 reduces the light intensity of the fill light unit 500 until the light intensity outside the cultivation skeleton is within the preset light intensity range, wherein,

[0074] When the light intensity inside the cultivation skeleton is lower than the lower limit of the preset light intensity range, the processor 300 controls the first reflector 200 to rotate to form a first incident light path, and the processor 300 controls the second reflector 210 to rotate in a manner to receive the first incident light path of the first reflector 200 to form a first reflected light path, thereby performing a fill light operation on the area to be fill light inside the cultivation skeleton.

[0075] According to a preferred embodiment, when the light intensity outside the cultivation skeleton detected by the first detection unit is greater than the upper limit of the preset light intensity range, and the light intensity inside the cultivation skeleton detected by the second detection unit is within the preset light intensity range, the processor 300 controls the first reflector 200 to rotate in a manner of reflecting the external light source around the cultivation skeleton until the light intensity outside the cultivation skeleton is within the preset light intensity range, wherein,

[0076] When the light intensity inside the cultivation frame is lower than the lower limit of the preset light intensity range, the processor 300 controls the first reflector 200 to rotate to form a first incident light path, and the processor 300 controls the second reflector 210 to rotate in a manner of receiving the first incident light path of the first reflector 200 to form a first reflected light path, thereby performing a fill light operation on the area to be filled light inside the cultivation frame. The first reflector 200 reflects the external light source to the surrounding of the cultivation frame to reduce the light reaching the tomato 100 and avoid damage to the tomato 100. When the first reflector 200 reflects the external light source to the surrounding of the cultivation frame, the light intensity inside the cultivation frame may be lower than the lower limit of the preset light intensity range. At this time, the first reflector 200 at the top can be adjusted to the initial state to reflect the light source to the outside, and the placement angle of the first reflector 200 around the cultivation frame can be adjusted to allow the external ambient light to be incident on the middle and lower area to be filled light or incident on the second reflector 210. This setting can ensure that the tomatoes 100 at the top are not affected by excessive light, and can also ensure that the tomatoes 100 in the middle and lower parts receive sufficient light.

[0077] Preferably, the fill light system further includes an image acquisition unit 410 for acquiring the growth stage of the tomato 100. Preferably, the processor 300 acquires a preset light intensity range required for the tomato 100 corresponding to the growth stage based on the growth stage of the tomato 100, so as to adjust the light intensity of the fill light unit 500, the rotation mode of the first reflector 200, and the rotation mode of the second reflector 210, so as to make the tomatoes 100 at different growth stages within the preset light intensity range.

[0078] Preferably, the detection unit 400 can be a light intensity measuring instrument. Preferably, the detection unit 400 can be a light sensor.

[0079] Preferably, the method for determining the growth stage of a plant comprises: collecting tomato images in a cultivation system; comparing the collected images with standard images in a plant image database; and when the image of the plant matches an image of a particular stage, determining the current growth stage of the plant. Preferably, the plant image database includes standard images of each stage of the plant. The stage feature information in the collected image is compared with the stage feature information in the standard image to determine the growth stage of the plant. Preferably, the comparison method is: performing a traversal comparison of pixel values ​​between the pixel coordinates of the tomato image collected in real time and the pixel coordinates of the standard image. Specifically, the tomato image collected in real time is divided into regions, wherein the region division refers to dividing the image into a number of x*y difference blocks according to the pixel coordinates in the original image of the tomato image collected in real time. Correspondingly, the image is also divided into a number of x*y difference blocks according to the pixel coordinates of the standard image. According to a specified order (from left to right, from right to left, from top to bottom, etc.), a pixel value difference comparison is performed on any difference block in the real-time acquired tomato image and the corresponding difference area in the standard image to determine whether the two pixel values ​​are the same. If the comparison result is higher than a specified threshold, it means that the real-time acquired tomato image matches the standard image, and the growth stage of the tomato 100 is determined.

[0080] For example, the growth stage of tomato 100 is divided into four stages: germination, seedling, flowering and fruiting, and fruiting. The characteristic information of the germination stage is: seed germination to the emergence of the first true leaf. The characteristic information of the seedling stage is: true emergence to the appearance of large buds (8 to 9 true leaves). The characteristic information of the flowering and fruiting stage is: the appearance of large buds in the first inflorescence to the first ear of fruit (the first ear of fruit grows to the size of a walnut). The characteristic information of the fruiting stage is: the first inflorescence fruiting to the harvesting of all fruits.

[0081] Specifically, when the collected image of tomato 100 matches the standard image of tomato 100 in the germination period in the plant image database, it is determined that the current tomato 100 is in the germination period; when the collected image of tomato 100 matches the standard image of tomato 100 in the seedling period in the plant image database, it is determined that the current tomato 100 is in the seedling period; when the collected image of tomato 100 matches the standard image of tomato 100 in the flowering and fruiting period in the plant image database, it is determined that the current tomato 100 is in the flowering and fruiting period; when the collected image of tomato 100 matches the standard image of tomato 100 in the fruiting period in the plant image database, it is determined that the current tomato 100 is in the fruiting period.

[0082] Preferably, in the present embodiment, the preset light intensity range of the tomato 100 in the seedling stage (growth stage) can be 1200-1300 μE. Specifically, 1200 μE is the lower limit of the preset light intensity range of the tomato 100 in the seedling stage, and 1300 μE is the upper limit of the preset light intensity range of the tomato 100 in the seedling stage. Preferably, in the present embodiment, the preset light intensity range of the tomato 100 in the flowering and fruiting stage can be 1300-1500 μE. Specifically, 1300 μE is the lower limit of the preset light intensity range of the tomato 100 in the flowering and fruiting stage, and 1500 μE is the upper limit of the preset light intensity range of the tomato 100 in the flowering and fruiting stage. Preferably, in the present embodiment, the preset light intensity range of the tomato 100 in the fruiting stage can be 1500-1600 μE. Specifically, 1500 μE is the lower limit of the preset light intensity range of the tomato 100 in the fruiting stage, and 1600 μE is the upper limit of the preset light intensity range of the tomato 100 in the fruiting stage.

[0083] Example 2

[0084] This embodiment is a further improvement on Embodiment 1, and the repeated contents will not be repeated here.

[0085] Preferably, the light receiving information also includes light source band information.

[0086] Preferably, the fill light system further includes a fill light unit 500. Preferably, the fill light unit 500 includes at least a first fill light unit capable of providing a first band light of an effective spectrum for photosynthesis of the tomato 100 and a second fill light unit for adjusting a second band light of an effective component of the tomato 100, wherein the first band light provided by the first fill light unit has a different peak value from the second band light provided by the second fill light unit. The effective spectrum refers to the spectrum of solar radiation that is effective for plant photosynthesis.

[0087] Preferably, the first fill light unit and the second fill light unit are independently controlled by the processor 300 .

[0088] Preferably, the first band light provided by the first fill light unit is photosynthetically active radiation. Preferably, the first band light provided by the first fill light unit is a light source in the visible light band having a spectrum similar to that of sunlight. Specifically, the first band light provided by the first fill light unit has at least two peaks in the band of 380 to 760 nm. Specifically, the first band light has a peak (460 nm blue light) in the band of about 420 nm to about 500 nm, and another peak (630 nm red light) in the band of about 600 nm to about 700 nm.

[0089] Preferably, the second wavelength band light provided by the second fill light unit can be purple light, blue light or ultraviolet light. Specifically, the second wavelength band light provided by the second fill light unit has at least two peaks in the wavelength band of 400-420 nm.

[0090] Photosynthetically active radiation refers to the solar radiation energy that can be absorbed and converted by photosynthetic pigments during the photosynthesis of green plants (the part of solar radiation with a wavelength range of 380-710nm that can be used for photosynthesis of plants). Photosynthetically active radiation is measured using a photosynthetically active radiometer, such as the LI-250A light meter.

[0091] Light of different wavelengths has different effects on the physiology of plants. Therefore, the weights of light of different wavelengths participating in photosynthesis are different, which will change with the growth stage of the plant.

[0092] The spectrum used to regulate the effective components of tomatoes refers to the spectrum that regulates the synthesis of effective components such as protein and carbohydrates in tomatoes during a specific growth period.

[0093] Preferably, different light source bands have different effects on plant growth, such as blue-violet light promotes protein synthesis; red light promotes carbohydrate synthesis.

[0094] According to a preferred embodiment, based on the growth stage of the tomato 100 , the processor 300 adjusts the coordination mode of the first fill light unit and the second fill light unit to promote the photosynthesis of the tomato 100 in a specific growth stage.

[0095] Effects of different light quality supplementary lighting on the growth indicators and photosynthesis of greenhouse tomatoes 100. Different light qualities have a certain effect on chlorophyll synthesis during the growth and fruiting periods of tomatoes 100. For example, from the seedling stage to the peak fruiting period of tomatoes 100: blue light supplementary lighting effectively promotes the growth of tomatoes 100. When tomatoes 100 are in the growth period (seedling stage), blue light and red light supplementary lighting can effectively enhance the photosynthesis of tomatoes 100. When tomatoes 100 are in the flowering period, red light or red and blue light supplementary lighting treatment in a certain ratio (for example, red and blue = 7:1) can effectively promote the photosynthesis of tomatoes 100. When tomatoes 100 are in the fruiting period, red light or red and blue light supplementary lighting treatment in a certain ratio (for example, red and blue = 5:1) can effectively enhance the photosynthesis of tomatoes 100.

[0096] According to a preferred embodiment, the processor 300 controls the first fill light unit and the second fill light unit to fill light for the tomato 100 according to the growth stage of the tomato 100 and the active period of photosynthesis. For example, the fill light treatment of the growth period, flowering period, and fruiting period of the tomato 100 is active at 14:00-16:00; the net photosynthetic efficiency of red light is the highest during the flowering period.

[0097] Preferably, the processor 300 controls the rotation angles of the first reflective plate 200 and the second reflective plate 210 to rotate in a manner matching the ratio of light sources required at the growth stage of the tomato 100 .

[0098] It should be noted that the above-mentioned 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 disclosure scope of the present invention and fall within the protection scope of the present invention. Those skilled in the art should understand that the present invention specification and its drawings are illustrative and do not constitute a limitation of the claims. The scope of protection of the present invention is defined by the claims and their equivalents. The present invention specification contains multiple inventive concepts, such as "preferably", "according to a preferred embodiment" or "optionally", all of which indicate that the corresponding paragraph discloses an independent concept, and the applicant reserves the right to file a divisional application based on each inventive concept. Throughout the text, the features guided by "preferably" are only an optional method and should not be understood as being required. Therefore, the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims

1. A tomato dense planting cultivation lighting system, comprising: A cultivation frame for growing tomatoes (100); A detection unit (400) for acquiring light-receiving information of the tomato (100); A plurality of first reflection plates (200) installed on the outside of the cultivation frame to reflect the external light source from the cultivation frame to the tomatoes (100) planted inside the cultivation frame, characterized in that: a plurality of second reflection plates (210) installed in the cultivation frame at positions adjacent to the tomatoes (100) planted therein to reflect the external light source and the reflected light source of the first reflection plate (200); and a processor (300) connected to the detection unit (400), the first reflection plate (200) and the second reflection plate (210) by signals, The light receiving information is information about the light intensity received by the tomato (100), wherein: The processor (300) is configured to: When it is detected that the light intensity is lower than a preset light intensity range, the rotation angle of the first reflector (200) and / or the second reflector (210) is controlled to reflect the light source to the area to be supplemented with light.

2. The system according to claim 1, characterized in that The detection unit (400) comprises at least a plurality of first detection units for detecting light intensity information outside the cultivation frame and a plurality of second detection units for detecting light intensity information inside the cultivation frame, so as to obtain light exposure conditions of the tomatoes (100) at different spatial positions.

3. The system according to claim 1 or 2, characterized in that: When the light intensity outside the cultivation frame detected by the first detection unit is within a preset light intensity range or exceeds the upper limit of the preset light intensity range, the processor (300) controls the second detection unit to start working to detect the light intensity inside the cultivation frame.

4. The system according to any one of claims 1 to 3, characterized in that: When the light intensity outside the cultivation frame detected by the first detection unit is lower than a preset light intensity range, the processor (300) controls the first reflection plate (200) to rotate to form a first incident light path, thereby performing a fill light operation on the area to be filled light of at least one light-requiring tomato.

5. The system according to any one of claims 1 to 4, characterized in that: When the light intensity outside the cultivation skeleton detected by the first detection unit is within a preset light intensity range, and the light intensity inside the cultivation skeleton detected by the second detection unit is lower than the lower limit of the preset light intensity range, the processor (300) controls the first reflection plate (200) to rotate to form a first incident light path, and the processor (300) controls the second reflection plate (210) to rotate in a manner of receiving the first incident light path of the first reflection plate (200) to form a first reflected light path, thereby performing a fill light operation on the area to be fill light inside the cultivation skeleton.

6. The system according to any one of claims 1 to 5, characterized in that: When the light intensity outside the cultivation frame detected by the first detection unit is greater than the upper limit of the preset light intensity range, and the light intensity inside the cultivation frame detected by the second detection unit is lower than the lower limit of the preset light intensity range, the processor (300) reduces the light intensity of the fill light unit (500) or controls the first reflection plate (200) to rotate in a manner of reflecting the external light source to the periphery of the cultivation frame until the light intensity outside the cultivation frame is within the preset light intensity range, wherein: When the light intensity inside the cultivation skeleton is lower than the lower limit of a preset light intensity range, the processor (300) controls the first reflector (200) to rotate to form a first incident light path, and the processor (300) controls the second reflector (210) to rotate in a manner of receiving the first incident light path of the first reflector (200) to form a first reflected light path, thereby performing a fill light operation on the area to be fill light inside the cultivation skeleton.

7. The system according to any one of claims 1 to 6, characterized in that: The processor (300) obtains a preset light intensity range required for the tomato (100) at the growth stage based on the growth stage of the tomato (100), so as to adjust the light intensity of the fill light unit (500), the rotation mode of the first reflective plate (200) and / or the rotation mode of the second reflective plate (210), so as to make the tomatoes (100) at different growth stages fall within the preset light intensity range.

8. The system according to any one of claims 1 to 7, characterized in that: The light-filling system further comprises a first light-filling unit capable of providing a first-band light of an effective spectrum for the tomato (100) to perform photosynthesis, and a second light-filling unit capable of providing a second-band light of an effective spectrum for adjusting the effective components of the tomato (100), wherein: The peak values ​​of the first wavelength band light provided by the first fill light unit and the second wavelength band light provided by the second fill light unit are different.

9. The system according to any one of claims 1 to 8, characterized in that: Based on the growth stage of the tomato (100), the processor (300) adjusts the coordination mode of the first fill light unit and the second fill light unit to promote the photosynthesis of the tomato (100) at a specific growth stage.

10. A method for supplementing light for densely planted tomatoes, characterized in that: The steps include: Detecting the light receiving information of the tomato (100), Determine the area to be filled with light through the light receiving information, The rotation angles of the first reflecting plate (200) and the second reflecting plate (210) are adjusted so that the light intensity of the area to be supplemented with light in the cultivation frame space is within a preset light intensity range.

Images