Plant light and photosynthetic photon flux density adjustment method thereof

Abstract

This invention relates to the field of lighting technology and provides a plant lamp. The plant lamp includes a lamp body assembly, a second lamp body, and a first support. The lamp body assembly is evenly spaced between two first supports. The second lamp body is arranged along the length of the first supports and is located on the same side of the first supports as the lamp body assembly. The second lamp body includes a second lens, and the thickness of the second lens facing the lamp body assembly is greater than the thickness of the lens facing away from the lamp body assembly. This technical solution evenly spaces the lamp body assembly between the two first supports without affecting its expandability. Through the polarizing structure of the second lens, the emitted light is deflected towards the area between the lamp body assemblies, supplementing the photosynthetic photon flux density at the longitudinal edge of the plant lamp. This reduces the difference in photosynthetic photon flux density between the edge of the central area of ​​the plant lamp and the center of the lamp, effectively solving the technical problem of poor uniformity of photosynthetic photon flux density within the coverage area of ​​multiple plant lamps connected in series.

Description

Technical Field

[0001] This invention relates to the field of lighting technology, and in particular to a plant lamp and a method for adjusting the photosynthetic photon flux density thereon. Background Technology

[0002] Plant lights, also known as plant grow lights or LED plant lights, are lighting fixtures that use artificial light sources to simulate the solar spectrum, providing energy for plant photosynthesis and promoting plant growth and development.

[0003] Current plant lights, when improving photosynthetic photon flux density (PPFD), simply increase the flux without considering the plant's efficient use of light. Most photons emitted by these lights are concentrated at the bottom center, with relatively few photons around the perimeter, resulting in low photon utilization by the plants below the light fixture. To address this, Chinese utility model patent CN218237203U discloses an LED plant grow light with uniformly distributed photosynthetic photon flux density. By arranging the LED chips at a denser spacing at both ends and a sparser spacing in the middle, and combining this with a support light-emitting component, a structure is formed where light shines from all sides and into the center, achieving a highly uniform distribution of photosynthetic photon flux density within the light fixture's coverage area.

[0004] However, while the aforementioned technical solutions can address the problem of poor uniformity of photosynthetic photon flux density within the coverage area of ​​multiple connected lamps, these solutions primarily achieve this by altering the uneven layout of the lamp strips. This limits the plant lamps to being used as dedicated lighting fixtures in fixed scenarios, resulting in poor scalability. Therefore, this invention application provides a plant lamp and a method for adjusting its photosynthetic photon flux density, aiming to solve the problem of poor uniformity of photosynthetic photon flux density within the coverage area of ​​multiple connected lamps without affecting the lamp's scalability. Summary of the Invention

[0005] In view of this, embodiments of the present invention provide a plant lamp and a method for adjusting the photosynthetic photon flux density thereon, in order to solve the technical problem of poor uniformity of photosynthetic photon flux density within the coverage area of ​​existing plant lamps with multiple lamps connected in series, without affecting the scalability of the lamp.

[0006] In a first aspect, embodiments of the present invention provide a plant lamp, including a lamp body assembly, a second lamp body, and a first support, wherein the lamp body assembly is evenly spaced between two first supports; the second lamp body is arranged along the length direction of the first supports and is located on the same side of the first supports as the lamp body assembly; the second lamp body includes a second lens, wherein the thickness of the second lens on the side facing the lamp body assembly is greater than the thickness on the side facing away from the lamp body assembly.

[0007] Preferably, the lamp body assembly includes a first lamp body and a mounting component, wherein the first lamp body is fixedly connected to a first bracket via the mounting component.

[0008] Preferably, the mounting component has a mounting groove on the side near the first lamp body, and the mounting component is connected to the first lamp body through the mounting groove.

[0009] Preferably, the first lamp body further includes a support member and a first lamp plate. The support member includes a first lamp groove parallel to the horizontal ground. The bottom of the mounting groove extends in a direction away from the lamp body assembly and is provided with a second lamp groove. The main body of the first lamp plate is disposed in the first lamp groove, and both ends are respectively disposed in the second lamp groove and fixed by the second lamp groove.

[0010] Preferably, the first lamp body further includes a first lens, the first lens having an arc-shaped cross-section, and sliders protruding into the concave surface at both ends of the arc-shaped structure; corresponding grooves are provided on both sides of the support member, and the first lens and the support member are connected by sliders and grooves.

[0011] Preferably, the first bracket includes a bracket body, the bracket body being a U-shaped structure, and a first fixing hole being provided at the bottom of the U-shaped structure; a reinforcing member is provided along the length direction at the bottom of the first lamp slot on the side away from the first lamp board, and a second fixing hole is provided along the length direction of the reinforcing member; the bracket body is connected to the support member by fasteners passing through the first fixing hole and the second fixing hole.

[0012] Preferably, the plant light further includes a folding assembly; the folding assembly includes a first connector and a second connector, the folding assembly is disposed on a first support through the first connector and the second connector, the first connector and the second connector are hinged so that the first support connected to the first connector can be stacked with the first support connected to the second connector.

[0013] Preferably, the plant light further includes a second support and a third connector, wherein the two ends of the second support are respectively mounted on the first supports at both ends via the third connector.

[0014] Preferably, the power of the second lamp body is greater than or equal to one-half of that of the first lamp body.

[0015] Secondly, embodiments of the present invention provide a method for adjusting the photosynthetic photon flux density of a plant lamp, applied to a plant lamp comprising a first lamp plate located on the bottom surface of the lamp body and a second lamp plate located on the bottom surface of a support, wherein the light emission directions of both the first lamp plate and the second lamp plate can be adjusted by replacing the polarizing lens, characterized in that the method comprises: Based on the installation height, row spacing, and polarization angle of the plant lights, the first light panel and the second light panel were sequentially lit and measured according to the channel. The photosynthetic photon flux density response data of the corresponding planting area grid under different polarization angles of each channel were collected, and the light influence relationship was constructed based on the response data. The light influence relationship is used to characterize the response relationship of the channel power and polarization angle changes to the light distribution of the target area. The canopy morphology and shading conditions of the target planting area are obtained, and a spatial grid is generated in the planting area. Weights are assigned to each grid cell according to the degree of shading to form a weighted monitoring grid for setting the target illumination. The target photosynthetic photon flux density distribution and light uniformity index of each grid unit in the planting area are determined according to the crop growth stage, and an edge compensation coefficient is added in the grid units near the edge of the planting area; the target photosynthetic photon flux density distribution is arranged in a preset order to form a target light vector, which is used to represent the target light demand of each grid unit in the weighted monitoring grid. Based on the aforementioned illumination influence relationship, the channel power vector and polarization angle vector of the first lamp panel and the second lamp panel are jointly optimized and solved to make the predicted illumination distribution approximate the target illumination vector, thereby obtaining the initial illumination parameters for performing preliminary illumination adjustment.

[0016] Beneficial effects: Compared with the prior art, an embodiment of this application provides a plant lamp, which includes a lamp body assembly, a second lamp body, and a first support. The lamp body assembly is evenly spaced between two first supports. The second lamp body is arranged along the length direction of the first supports and is located on the same side of the first supports as the lamp body assembly. The second lamp body includes a second lens, and the thickness of the second lens on the side facing the lamp body assembly is greater than the thickness on the side facing away from the lamp body assembly. The lamp body components of this technical solution are evenly spaced between two first supports, ensuring that multiple plant lamps can be connected in series and / or in parallel to adapt to various scenarios requiring plant illumination. The second lamp body is arranged along the length of the first support and is located on the same side of the first support as the lamp body components, ensuring that the second lamp body can work with the lamp body components to adjust the photosynthetic photon flux density of multiple connected and / or parallel plant lamps. By making the thickness of the second lens on the side facing the lamp body components greater than the thickness on the side facing away from the lamp body components, the second lens can form a polarizing structure, thereby allowing the light emitted from the second lamp panel to be deflected towards the area between the lamp body components, supplementing the photosynthetic photon flux density at the longitudinal edge of the plant lamp, and reducing the difference between the photosynthetic photon flux density at the edge of the middle area of ​​the plant lamp and the photosynthetic photon flux density at the center of the lamp. Thus, without affecting the scalability of the lamp, it effectively solves the technical problem of poor uniformity of photosynthetic photon flux density within the coverage area of ​​existing multi-lamp series plant lamps. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of the present invention.

[0018] Figure 1 This is a three-dimensional structural diagram of a plant lamp according to one embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of a plant lamp according to another embodiment of the present invention; Figure 3 This is a schematic diagram of an explosion of a plant lamp according to one embodiment of the present invention; Figure 4 This is a three-dimensional structural diagram of the lamp body assembly in one embodiment of the present invention; Figure 5 This is a three-dimensional structural diagram of the first lens in one embodiment of the present invention; Figure 6 This is an exploded view of the second lamp body and the first bracket in one embodiment of the present invention; Figure 7 This is a three-dimensional structural diagram of the support member in one embodiment of the present invention; Figure 8 This is a three-dimensional structural diagram of the mounting component in one embodiment of the present invention; Figure 9 This is an exploded view of a folding component according to an embodiment of the present invention; Figure 10 An isoline diagram showing the test data of the photon flux density of plant light without the second lamp body in one embodiment of the present invention; Figure 11 This is a contour plot of plant light photon flux density test data in one embodiment of the present invention; Figure 12 This is a schematic flowchart of a method for adjusting the photosynthetic photon flux density of a plant lamp in one embodiment of the present invention.

[0019] Parts and their numbers in the diagram: 1. Plant light; 10. Light body assembly; 100. First light body; 1000. Support component; 10000. First light groove; 10001. Sliding groove; 10002. Reinforcing component; 10003. Second fixing hole; 10004. Third fixing hole; 1001. First light plate; 1002. First lens; 10020. Sliding block; 10021. Limiting strip; 101. Mounting component; 1010. Mounting groove; 1011, Second lamp trough; 11, First bracket; 110, Bracket body; 111, End cap; 112, Side cap; 12, Folding assembly; 120, First connector; 121, Second connector; 1200, Mounting part; 1201, Sliding part; 13, Second bracket; 14, Third connector; 15, Hook; 16, Power cord; 17, Second lamp body; 170, Second lens; 171, Second lamp panel. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, the element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Where there is no conflict, embodiments of the present invention and the various features thereof can be combined with each other, all of which are within the scope of protection of the present invention.

[0021] Please see Figures 1 to 9 and combined Figure 10 and 11One embodiment of the present invention provides a plant lamp 1, comprising a lamp body assembly 10, a second lamp body 17, and a first support 11. The lamp body assembly 10 is evenly spaced between two first supports 11. The second lamp body 17 is arranged along the length direction of the first support 11 and is located on the same side of the first support 11 as the lamp body assembly 10. The second lamp body 17 includes a second lens 170, and the thickness of the second lens 170 on the side facing the lamp body assembly 10 is greater than the thickness on the side facing away from the lamp body assembly 10.

[0022] It should be noted that the plant light 1 promotes plant photosynthesis by emitting light of specific wavelengths, thereby accelerating plant growth. To achieve good heat dissipation and a large illumination space, the plant light 1 is usually designed as a long strip. There are generally two ways to set up the plant light 1: one is to place it on top of the plant to provide supplemental lighting at the top; the other is to place it between adjacent plants to provide supplemental lighting between plants. Of course, it is understood that in actual use, both methods can usually be used simultaneously to provide supplemental lighting both on top of the plant and between plants. In the top-lighting method, the plant light 1 is usually suspended using tools such as ropes to simulate the effect of sunlight and provide suitable lighting conditions for the plants. The actual effect of the plant light 1 in promoting photosynthesis is usually evaluated using PPFD (Photosynthetic Photon Flux Density). In existing plant lights, multiple lamp body components 10 are arranged at uniform intervals, which causes the light emitted by the lamp strips to overlap in the middle of the lamp. Therefore, the PPFD value in the middle of the plant light 1 is larger than that in the surrounding areas, resulting in an actual effect as shown in the image. Figure 10 As shown, the PPFD value in the middle part is not only larger than that in the surrounding parts, but the middle part is also concave inward, which makes the PPFD uneven and thus easily leads to uneven growth and development of the plant.

[0023] Therefore, in this embodiment, a second lamp body 17 is installed on the first bracket 11. Through the polarization effect of the second lens 170 in the second lamp body 17, the light emitted by the second lamp panel 171 can be deflected towards the area between the lamp body assemblies 10, supplementing the photosynthetic photon flux density at the longitudinal edge of the plant lamp 1. Figure 11 As shown, after the second lamp body 17 is turned on, the difference between the photosynthetic photon flux density at the edge of the middle area of ​​the plant lamp 1 and the photosynthetic photon flux density at the center of the plant lamp 1 is reduced. Without affecting the scalability of the plant lamp 1, it can provide overall uniformity, so as to be suitable for plant supplemental lighting in various scenarios.

[0024] In the above embodiment, the lamp assembly 10 is the main lighting unit of the plant lamp 1, capable of directly emitting the light required for plant photosynthesis. The lamp assembly 10, arranged at even intervals between the two first supports 11, can form a uniformly covered lighting surface in the plant growth area, avoiding excessive local variations. The lamp assembly 10 cooperates with the second lamp assembly 17 on the same side. The lamp assembly 10 provides basic illumination as the main light source, while the second lamp assembly 17 supplements the light at the edges and between adjacent lamp assemblies 10, jointly improving the overall lighting coverage and uniformity.

[0025] In the above embodiment, the lamp body assemblies 10 are evenly spaced between the two first brackets 11. Therefore, the first brackets 11 directly support and fix the lamp body assemblies 10, ensuring the stability of the lamp body assemblies 10's position. At the same time, the first brackets 11 also serve as the mounting carrier for the second lamp body 17, providing a linear mounting path and support for the second lamp body 17.

[0026] In the above embodiment, the lamp body assembly 10 is evenly spaced between the two first supports 11, which can ensure that multiple plant lamps 1 are connected in series and / or in parallel to adapt to various scenarios that require plant illumination. The second lamp body 17 is arranged along the length direction of the first support 11 and is located on the same side of the first support 11 as the lamp body assembly 10, ensuring that the second lamp body 17 can cooperate with the lamp body assembly 10 to adjust the photosynthetic photon flux density of multiple connected and / or parallel plant lamps 1. The thickness of the second lens 170 facing the lamp body assembly 10 is greater than the thickness of the side facing away from the lamp body assembly 10, ensuring that the second lens 170 can form a polarizing structure, thereby allowing the light emitted by the second lamp plate 171 to be deflected towards the area between the lamp body assemblies 10, supplementing the photosynthetic photon flux density at the longitudinal edge of the plant lamp 1, reducing the difference between the photosynthetic photon flux density at the edge of the middle area of ​​the plant lamp 1 and the photosynthetic photon flux density at the center of the lamp, thus effectively solving the technical problem of poor uniformity of photosynthetic photon flux density within the coverage area of ​​existing multi-lamp series plant lamps without affecting the scalability of the lamp.

[0027] Please see Figures 1 to 9 In one embodiment, the lamp body assembly 10 includes a first lamp body 100 and a mounting member 101, wherein the first lamp body 100 is fixedly connected to the first bracket 11 via the mounting member 101.

[0028] It should be noted that in actual use, due to significant differences in the structural design between the first bracket 11 and the first lamp body 100, the first lamp body 100 usually cannot be directly fixed to the first bracket 11. Furthermore, if the first lamp body 100 is directly fixed to the first bracket 11, the replacement process is extremely complex when the first lamp body 100 is damaged and needs to be replaced.

[0029] Therefore, in this embodiment, the lamp body assembly 10 includes a mounting member 101. The mounting member 101 serves as a connection structure between the first lamp body 100 and the first bracket 11, enabling one or more first lamp bodies 100 to be simultaneously mounted on the first bracket 11.

[0030] In the above embodiments, the first lamp body 100 is an important functional unit in the lamp body assembly 10. It can directly emit the light source required for plant illumination and is the core carrier for realizing the light supply for plant photosynthesis.

[0031] Please see Figures 1 to 9 In one embodiment, the mounting member 101 is provided with a mounting groove 1010 on the side near the first lamp body 100, and the mounting member 101 is connected to the first lamp body 100 through the mounting groove 1010.

[0032] In this embodiment, the shape of the mounting groove 1010 is formed at both ends of the first lamp body 100 along its length, matching the first lamp body 100 and providing a clear assembly path for the first lamp body 100. This ensures that the first lamp body 100 and the mounting component 101 are quickly aligned, avoiding positional deviations during assembly. The mounting groove 1010 fills the structural gap between the first lamp body 100 and the mounting component 101, making them fit more closely, reducing shaking at the connection point, and improving the overall structural rigidity of the lamp assembly 10. Furthermore, it prevents displacement of the first lamp body 100, ensuring that the uniform illumination layout of the lamp assembly 10 is not disrupted.

[0033] Furthermore, the bottom of the mounting slot 1010 is provided with a through hole that matches the first lamp body 100, allowing the end of the first lamp body 100 to be fixed in the mounting slot 1010 by fasteners and the through hole. Meanwhile, the number of mounting slots 1010 is designed according to actual needs; when there are two or more mounting slots 1010, multiple first lamp bodies 100 can be installed, further improving the illumination coverage.

[0034] Please see Figures 1 to 9 In one embodiment, the first lamp body 100 further includes a support member 1000 and a first lamp plate 1001. The support member 1000 includes a first lamp groove 10000 parallel to the horizontal ground. The bottom of the mounting groove 1010 extends in a direction away from the lamp body assembly 10 and is provided with a second lamp groove 1011. The main body of the first lamp plate 1001 is disposed in the first lamp groove 10000, and both ends are respectively disposed in the second lamp groove 1011 and fixed by the second lamp groove 1011.

[0035] In this embodiment, the first lamp board 1001 integrates LED beads (LED: Light Emitting Diode) for illumination. The LED beads can directly output the light required for plant photosynthesis. It should be noted that the LED beads can be white light-emitting beads, far-red light-emitting beads, long-wave ultraviolet light-emitting beads, or any combination of the above three types of beads.

[0036] It should be noted that, in the prior art, a common method used by those skilled in the art to solve the problem of PPFD uniformity is to offset the lamp body on each side of the plant lamp 1 outwards to increase the PPFD of the lateral edge of the plant lamp 1, thereby improving the uniformity of a single lamp. However, in practical applications, plant lamps 1 are usually used in series with multiple lamps. The aforementioned solution of offsetting a single lamp outwards will actually result in a higher PPFD in the area between two plant lamps 1.

[0037] Therefore, in the above embodiment, the support member 1000 is the support structure of the first lamp panel 1001. The lamp panel body is fixed by the horizontally parallel first lamp groove 10000, which can maintain the horizontal posture of the lamp panel and ensure the stability of the light direction. In addition, the spacing between the lamp body components 10 is set at equal intervals, which can avoid the technical problem of excessive PPFD in the area between the two plant lamps 1.

[0038] In the above embodiments, both the first lamp groove 10000 and the second lamp groove 1011 are used to install the first lamp panel 1001. The first lamp groove 10000 has U-shaped structures at both ends along its width, which can confine the first lamp panel 1001 within the first lamp groove 10000. It should be noted that the first lamp groove 10000 is used to install the main body of the first lamp panel 1001, and the second lamp groove 1011 is used to install one end of the first lamp panel 1001. Specifically, the first lamp panel 1001 can be fixed in the second lamp groove 1011 by bolts, or a protruding positioning post can be provided in the second lamp groove 1011, and through holes can be opened at both ends of the first lamp panel 1001. By passing the through holes through the positioning post, the first lamp panel 1001 can be fixed.

[0039] Please see Figures 1 to 9 In one embodiment, the first lamp body 100 further includes a first lens 1002, the first lens 1002 having an arc-shaped cross-section, and sliders 10020 protruding into the concave surface at both ends of the arc-shaped structure; corresponding grooves 10001 are provided on both sides of the support member 1000, and the first lens 1002 and the support member 1000 are connected by sliders 10020 and grooves 10001.

[0040] In this embodiment, the first lens 1002 diffuses the point light source light from the first lamp panel 1001 through refraction and scattering, and adjusts the emission angle to make the light coverage wider and the light more uniform; it can avoid local scorching of plants by strong light or yellowing caused by local chlorosis by weak light, and ensure that the photosynthetic efficiency of all parts of the plant is more consistent.

[0041] In the above embodiment, the protruding sliders 10020 at both ends of the arc-shaped structure cooperate with the sliding grooves 10001 on both sides of the support member 1000 to achieve a stable connection between the first lens 1002 and the support member 1000, and also support quick disassembly and assembly. The first lens 1002 can be easily removed without the use of additional tools, making it convenient to replace the damaged first lens 1002 and reducing maintenance time and cost.

[0042] Please see Figures 1 to 9 In one embodiment, the first bracket 11 includes a bracket body 110, which is generally U-shaped, and a first fixing hole is provided at the bottom of the U-shaped structure; a reinforcing member 10002 is provided along the length direction at the bottom of the first lamp slot 10000 on the side away from the first lamp plate 1001, and a second fixing hole 10003 is provided along the length direction of the reinforcing member 1000; the bracket body 110 is connected to the support member 1000 by fasteners passing through the first fixing hole and the second fixing hole 10003.

[0043] In this embodiment, the open end of the U-shaped structure is used to cooperate with the opposite bottom end for fixed installation with the lamp body assembly 10. It is understood that if all the outer surfaces of the bracket body 110 were closed surfaces joined end-to-end, proper installation would be impossible when installing the bracket body 110 and the support member 1000. Therefore, the bracket body 110 is designed as a U-shaped structure. The open end of the U-shaped structure provides operating space, facilitating the connection between the bracket body 110 and the support member 1000. Simultaneously, the U-shaped structure provides a stable load-bearing foundation to support the lamp body assembly 10, the second lamp body 17, and other components of the plant lamp 1.

[0044] In the above embodiment, the reinforcing member 10002 enhances the bending resistance of the support member 1000. The reinforcing member 10002, extending along its length, disperses longitudinal forces, preventing deformation of the support member 1000 due to its own weight or external forces. The second fixing hole 10003 can be a C-shaped hole, corresponding to the first fixing hole, ensuring structural stability after the support member 1000 and the bracket body 110 are connected. Specifically, the first fixing hole can be a through hole or a threaded hole. In actual connection, bolts are used to fix the bracket body 110 and the support member 1000 through the first and second fixing holes 10003.

[0045] Please see Figures 1 to 9In one embodiment, the plant light 1 further includes a folding assembly 12; the folding assembly 12 includes a first connector 120 and a second connector 121, the folding assembly 12 is disposed on a first support 11 through the first connector 120 and the second connector 121, the first connector 120 and the second connector 121 are hinged so that the first support 11 connected to the first connector 120 can be stacked with the first support 11 connected to the second connector 121.

[0046] It should be noted that in the prior art, in order to improve the installation efficiency of the plant light 1 and to achieve a larger coverage area, the power is usually increased and the size of the plant light 1 is made larger. However, a larger plant light 1 is inconvenient to store and transport.

[0047] Therefore, in this embodiment, a folding component 12 is provided on the first bracket 11, which can fold the first bracket 11 at both ends of the folding component 12 together, thereby reducing the space occupied and facilitating storage and transportation, thus solving the problem that the above-mentioned high-power plant lamp 1 is large in size and inconvenient to store and transport.

[0048] In the above embodiment, both the first connector 120 and the second connector 121 are used to connect the first bracket 11. It can be understood that after the first bracket 11 connected to the first connector 120 and the second connector 121 is folded by the folding assembly 12, the opposite ends of the two first brackets 11 away from the second lamp body 17 abut against each other.

[0049] Furthermore, such as Figure 9 As shown, both the first connector 120 and the second connector 121 include a circular hinge portion, with a connecting hole at the center of the circle. The hinge portion of the first connector and the hinge portion of the second connector are hinged together by bolts passing through the connecting hole. Both the first connector 120 and the second connector 121 also include an arc-shaped sliding portion 1201. The hinge portion of the first connector 120 and the sliding portion 1201 of the second connector 121 cooperate, as do the sliding portion 1201 of the first connector 120 and the hinge portion of the second connector 121, to achieve relative rotation between the first connector 120 and the second connector 121. Both the first connector 120 and the second connector 121 include a mounting portion 1200 for mounting the second lamp body 17. Specifically, the second lens 170 and the second lamp plate 171 of the second lamp body 17 are provided with through holes at both ends. The mounting part 1200 of the first connector 120 and the second connector 121 is provided with threaded holes. The second lamp body 17 is fixed on the mounting part 1200 by bolts passing through the through holes and engaging with the threaded holes.

[0050] Furthermore, the second connector 121 is provided with a hook 15, which allows the plant light 1 to be suspended above the plant via the hook 15.

[0051] Please see Figures 1 to 9 In one embodiment, the plant light 1 further includes a second support 13 and a third connector 14, with the two ends of the second support 13 respectively disposed on the first supports 11 at both ends via the third connector 14.

[0052] like Figure 3 As shown, in this embodiment, the third connector 14 is a three-ended connector capable of connecting the first brackets 11 at both ends and the second bracket 13 in the middle. The third connector 14 has a receiving cavity near the connecting end of the second bracket 13, and a through hole at the bottom of the receiving cavity, through which a power cord 16 can be installed to connect the power supply. The receiving cavity is used to install electrical components. The second bracket 13 is used for wiring; it can be understood that the bracket body 110 of the first bracket 11 is also used for wiring.

[0053] Please see Figures 1 to 9 In one embodiment, a second lamp groove 1011 is provided on the outer side of one side wall of the U-shaped structure, and the second lamp body 17 further includes a second lamp plate 171, which is fixed in the second lamp groove 1011.

[0054] In this embodiment, the second lamp slot 1011 is used to install the second lamp plate 171. It is understood that during actual installation, the second lamp plate 171 is installed within the second lamp slot 1011. Threaded holes are provided at both ends of the lamp slot along its length. The mounting portions 1200 of the first connector 120 and the second connector 121 match the U-shaped structure. When the second lamp plate 171 is installed, one end of the second lamp plate 171 is fixedly connected by bolts through the second lens 170 and the through holes on the second lamp plate 171 to the threaded holes on the second lamp slot 1011 and the first connector 120 or the second connector 121, thereby achieving the installation of the second lamp plate 171.

[0055] Furthermore, the first bracket 11 also includes a side cover 112, and the protective member is connected to the open end of the U-shaped structure.

[0056] It is understandable that the second light board 171 also integrates LED beads, and the LED beads on the second light board 171 are matched with the LED beads on the first light board 1001. For example, if all the LED beads on the first light board 1001 are white light-emitting beads, then the LED beads on the second light board 171 are also white light-emitting beads.

[0057] Please see Figures 1 to 9 In one embodiment, the first lens 1002 further includes a limiting strip 10021, two limiting strips 10021 are provided, the limiting strips 10021 are provided along the length direction of the first lens 1002, and the limiting strips 10021 are provided in the concave surface.

[0058] In this embodiment, the limiting strip 10021 is used to limit the position of the first lamp panel 1001 and prevent the first lamp panel 1001 from deforming.

[0059] Please see Figures 1 to 9 In one embodiment, the power of the second lamp body 17 is greater than or equal to half that of the first lamp body 100.

[0060] It should be noted that in actual manufacturing and use, the width and length of the first bracket 11 cannot be made infinitely large. The width of the second lamp groove 1011 on the first bracket 11 is usually half the width of the first lamp groove 10000. Consequently, when the power of the second lamp body 17 is less than half the power of the first lamp body 100, the uniformity of PPFD is not significantly improved when the polarization angle of the second lens 170 is changed.

[0061] Therefore, in this embodiment, the power of the second lamp body 17 is adjusted to be greater than or equal to more than half of that of the first lamp body 100, and then the power parameters and the polarization angle of the second lens 170 are experimentally adjusted.

[0062] For further information, please refer to the following: Figures 1 to 9 and combined Figure 10 and Figure 11 It should be noted that adding a second lamp body 17 to the plant lamp 1 will increase the energy consumption of the plant lamp during actual use. This will occur when the PPFD value exceeds 1000 μmol / m³. 2 When the light intensity reaches 1 / s, the plants being irradiated will become light saturated and require more carbon dioxide to maintain the efficiency of photosynthesis. Although this can increase the yield of plants, it increases the overall cost.

[0063] To address the aforementioned issues, in practical use, to ensure that the total power of the plant light 1 remains unchanged after adding the second lamp body 17, the power of the first lamp body 17 is reduced. For example... Figure 10 and Figure 11 As shown, the peak value of PPFD decreases significantly after the power of the first lamp body 17 is reduced. However, because the power of the first lamp body 17 is reduced, the corresponding second lamp body 100 does not need to have a very high power to affect the overall lighting uniformity of the plant light 1. This satisfies the needs of the plants without increasing costs, and also improves the uniformity of PPFD. In actual use, this plant light 1, combined with pinching to eliminate apical dominance, is more conducive to plant growth.

[0064] Specifically, in actual use, the power ratio of the first lamp body 100 to the power of the second lamp body 17 is 2:1.

[0065] Please see Figure 12 and combined Figures 1 to 9 Another embodiment of the present invention provides a method for adjusting the photosynthetic photon flux density of a plant lamp 1, applied to a plant lamp 1 including a first lamp plate 1001 located on the bottom surface of the lamp body and a second lamp plate 171 located on the bottom surface of a first support 11. The light emission directions of both the first lamp plate 1001 and the second lamp plate 171 can be adjusted by replacing the polarizing lens. The method includes: Based on the installation height, row spacing and polarization angle of the plant light 1, the first light panel 1001 and the second light panel 171 are sequentially lit and measured according to the channel. The photosynthetic photon flux density response data of the corresponding planting area grid under different polarization angles of each channel are collected, and the light influence relationship is established based on the response data. The light influence relationship is used to characterize the response relationship of the channel power and polarization angle changes to the light distribution of the target area. The canopy morphology and shading conditions of the target planting area are obtained, and a spatial grid is generated in the planting area. Weights are assigned to each grid cell according to the degree of shading to form a weighted monitoring grid for setting the target illumination. The target photosynthetic photon flux density distribution and light uniformity index of each grid unit in the planting area are determined according to the crop growth stage, and an edge compensation coefficient is added in the grid units near the edge of the planting area; the target photosynthetic photon flux density distribution is arranged in a preset order to form a target light vector, which is used to represent the target light demand of each grid unit in the weighted monitoring grid. Based on the aforementioned illumination influence relationship, the channel power vector and polarization angle vector of the first lamp board 1001 and the second lamp board 171 are jointly optimized and solved to make the predicted illumination distribution approximate the target illumination vector, thereby obtaining the initial illumination parameters for performing preliminary illumination adjustment.

[0066] In this embodiment, by pre-collecting photosynthetic photon flux density response data of the first lamp panel 1001 and the second lamp panel 171 under different installation parameters and different polarization angles, and establishing the illumination influence relationship between channel power, polarization angle, and grid illumination distribution, the system can directly solve for a set of approximately optimal channel power and polarization angle combinations based on the target illumination vector during actual operation, avoiding reliance on extensive manual lamp testing and experience-based adjustments. The weighted monitoring grid constructed using canopy morphology and shading conditions ensures that illumination optimization considers not only geometric location but also the degree of canopy shading and edge compensation requirements, thus better reflecting the actual illumination conditions of the plant.

[0067] In the above embodiments, by uniformly representing the target photosynthetic photon flux density distribution as the target illumination vector and comparing and optimizing it with the predicted illumination distribution in the same grid coordinate system, the initial illumination parameters can be automatically generated under the premise of ensuring illumination uniformity and illumination gradient requirements at different growth stages. This provides a good initial solution for subsequent safety constraints and closed-loop correction, thereby improving the efficiency and convergence speed of the overall dimming process.

[0068] In the above embodiments, by establishing the light influence relationship, constructing a weighted monitoring grid, generating the target light vector, and jointly optimizing the channel power vector and polarization angle vector, the plant lamp 1 can accurately distribute the photosynthetic photon flux density to each grid unit in the planting area, taking into account canopy shading and edge compensation. This improves the target light satisfaction, light uniformity, and effective light utilization efficiency, while reducing debugging complexity.

[0069] In one embodiment, the method further includes: Based on the temperature rise characteristics and system energy consumption of the plant lamp 1, a safety judgment is made on the initial lighting parameters. When the predicted junction temperature or total power exceeds the preset threshold, the power setting value of the corresponding channel is trimmed and the power setting value of the remaining channels is redistributed to obtain safe lighting parameters. When the first lamp panel 1001 and the second lamp panel 171 are working under the control of the safety lighting parameters, data from the photosynthetic photon flux density probe and the canopy brightness image are collected in the planting area. The two data are fused to estimate the actual light distribution. Based on the difference between the actual light distribution and the target light vector, the channel power vector and the polarization angle vector are adjusted with the smallest amplitude to obtain the closed-loop lighting parameters. In the low-illuminance detection sequence, the first lamp board 1001 and the second lamp board 171 are driven sequentially with reduced power to output test illumination. The coefficients in the illumination influence relationship are updated based on the test data collected by the photosynthetic photon flux density probe to compensate for the influence of device aging or environmental changes on the illumination response.

[0070] In this embodiment, by introducing safety assessments of temperature rise characteristics and system energy consumption based on the initial illumination parameters, it is possible to ensure that while meeting illumination requirements, certain channels are prevented from operating at excessively high power for extended periods, leading to junction temperature exceeding limits or the overall lamp power exceeding the design range. This improves the reliability and lifespan of the system from an engineering perspective. Furthermore, by combining measured data from the photosynthetic photon flux density probe with canopy brightness images for data fusion, a finer actual illumination distribution can be obtained at the grid level. Channel power and polarization angles can be fine-tuned under minimal constraints, achieving closed-loop correction of the initial solution and reducing residual errors with the target illumination vector. Periodically updating the coefficients in the illumination influence relationship using a low-illuminance detection sequence can also compensate for response drift caused by factors such as device aging and changes in reflection conditions, ensuring high accuracy of the illumination influence relationship throughout its entire lifespan.

[0071] In one embodiment, determining the illumination influence relationship includes: Under preset installation heights, row spacings, and polarization angles, sequential lighting measurements are performed on each channel of the first lamp panel 1001 and the second lamp panel 171 on a standard reference plane to obtain the photosynthetic photon flux density distribution of each channel in the corresponding planting area grid at each setting. The photosynthetic photon flux density distribution is then normalized to obtain the illumination influence coefficient of each channel at each setting. The light influence coefficients are arranged according to the channel and grid positions to form a channel influence matrix. When the actual installation height, row spacing and polarization angle of the plant light 1 are between any two adjacent positions, the channel influence matrix under the target installation parameters is obtained by interpolation calculation based on the channel influence matrix of the corresponding position, which is used as the light influence relationship under the target installation parameters.

[0072] In this embodiment, by systematically and sequentially illuminating each channel at multiple installation heights, row spacings, and polarization angles, and normalizing the measured photosynthetic photon flux density distribution, an illumination influence coefficient that is linearly or approximately linearly related to the driving power can be extracted from the experimental data, and this coefficient can be used to construct a channel influence matrix. Using interpolation operations between the channel influence matrices, the illumination influence relationship under corresponding installation parameters can be obtained even when actual installation conditions do not perfectly fall within the calibration settings. This avoids performing complete field calibration under every installation condition, reducing deployment costs and improving the method's versatility.

[0073] In one embodiment, obtaining the canopy morphology and shading status of the target planting area includes: A camera is set above the plant light 1 to capture a top view image of the planting area, thereby obtaining a top view image of the canopy of the target planting area; The top view image of the canopy is divided into multiple image grid units in a manner corresponding to the spatial grid of the planting area, and image processing is performed on each image grid unit to obtain the proportion of plant pixels in each image grid unit. The proportion of plant pixels in each image grid cell is mapped to the occlusion weight value of the corresponding spatial grid cell. The spatial grid cell with a higher proportion of plant pixels has a larger occlusion weight value, so as to form a weighted monitoring grid for target illumination setting based on the occlusion weight value.

[0074] In this embodiment, by placing a camera above the plant light 1 to acquire a top-view image of the canopy and dividing the image into image grid units corresponding to a spatial grid, the canopy coverage of the entire planting area can be obtained without adding additional physical sensors. By calculating the proportion of plant pixels in each image grid unit and mapping it to an occlusion weight value, it is possible to distinguish between sparse and dense canopy areas during light optimization. Grid units with dense canopies and severe occlusion are given higher weights, thereby prioritizing the photosynthetic photon flux density level of key coverage areas when adjusting channel power and polarization angle, avoiding the problem of only satisfying geometric uniformity while ignoring differences in canopy structure.

[0075] In one embodiment, the joint optimization solution of the channel power vector and polarization angle vector of the first lamp board 1001 and the second lamp board 171 based on the illumination influence relationship includes: Several polarization angle settings are preset to form a polarization angle candidate set, and multiple polarization angle vector candidates are constructed based on the polarization angle candidate set; Within the weighted monitoring grid, distinguish between grid units located within the crop row area of ​​the planted area and grid units located in non-planted areas or passageways. After the target illumination vector is determined, for each of the polarization angle vector candidates, the corresponding channel power vector is solved by the linear least squares algorithm based on the illumination influence relationship to obtain multiple candidate initial illumination parameters, and the predicted illumination distribution corresponding to each candidate initial illumination parameter is calculated using the illumination influence relationship. For each set of predicted light distributions, all photosynthetic photon flux density falling within the grid cells of non-planting areas is considered as light waste, and the portion falling within the grid cells of planting areas that exceeds the upper limit of the corresponding target photosynthetic photon flux density is considered as light waste. The light waste factor corresponding to the set of predicted light distributions is calculated on the weighted monitoring grid accordingly. Among the multiple candidate initial lighting parameters, under the constraints that the predicted illumination distribution meets the target photosynthetic photon flux density distribution and illumination uniformity index, the candidate initial lighting parameter with a smaller illumination waste factor and a deviation index that meets the preset requirements is selected as the initial lighting parameter based on the deviation index between the predicted illumination distribution and the target illumination vector and the illumination waste factor.

[0076] In this embodiment, by discretizing the polarization angle into several levels and constructing candidate polarization angle vectors, different polarization combinations can be evaluated within a limited search space. Combined with a linear least squares algorithm, the corresponding channel power vector is quickly solved, yielding multiple sets of candidate initial illumination parameters. By explicitly distinguishing planting area grid cells from non-planting area or aisle grid cells in the weighted monitoring grid, and defining the photosynthetic photon flux density falling into non-planting areas and the portion exceeding the target upper limit in planting areas as light waste, a light waste factor reflecting effective light utilization efficiency can be constructed. Under the premise of satisfying the target photosynthetic photon flux density distribution and light uniformity indicators, the initial illumination parameters are selected using the deviation index and the light waste factor as a joint evaluation criterion. This allows this embodiment to not only achieve the expected uniform light and growth requirements but also actively suppress excessive irradiation of non-planting areas and oversaturated areas, improving the effective light utilization efficiency per unit input power.

[0077] In one embodiment, data fusion and closed-loop correction of data from a photosynthetic photon flux density probe and canopy brightness images include: During the calibration phase, the measured values ​​of each photosynthetic photon flux density probe deployed in the planting area and the canopy brightness value at the corresponding pixel position were collected simultaneously under multiple reference lighting conditions. Based on the probe measured values ​​and canopy brightness values ​​under each reference lighting condition, the conversion coefficient between the brightness and photosynthetic photon flux density at each probe position was calculated. When the first lamp panel 1001 and the second lamp panel 171 are controlled to work using safety lighting parameters, for a spatial grid cell containing a photosynthetic photon flux density probe, the real-time measurement value of the probe is used as the estimated value of the photosynthetic photon flux density of the spatial grid cell, and the local scaling factor of the brightness and photosynthetic photon flux density of the spatial grid cell is obtained based on the conversion coefficient. For a spatial grid cell that does not contain a photosynthetic photon flux density probe, the estimated value of the photosynthetic photon flux density of the spatial grid cell is obtained by interpolation based on the canopy brightness value corresponding to the spatial grid cell and the local scaling factor of the adjacent spatial grid cells that contain photosynthetic photon flux density probes, thereby forming the actual light distribution in the planting area. The actual illumination distribution is compared with the target illumination vector to obtain an error vector. Under the constraints of the preset channel power adjustment step size and maximum adjustment amplitude, the channel power vector is iteratively corrected according to the error vector to update the closed-loop illumination parameters.

[0078] In this embodiment, by establishing the conversion relationship between canopy brightness and photosynthetic photon flux density during the calibration phase, the measurement results of photosynthetic photon flux density probes deployed only at a few points can be spatially expanded using brightness image information with wider coverage and higher spatial resolution during normal operation. For the grid cell where the probe is located, a local scaling factor is obtained through real-time measurements and conversion coefficients to ensure the estimation accuracy of these key points; for grid cells without probes, interpolation estimation is performed using the local scaling factor of adjacent probe locations and local brightness values, thereby reconstructing the actual light distribution throughout the planting area. By combining error vector and power adjustment constraints to iteratively correct the channel power vector, the target light vector can be steadily approximated without overshooting and frequent fluctuations, improving the stability and response speed of closed-loop control.

[0079] In summary, a plant lamp 1 according to an embodiment of this application includes a lamp body assembly 10, a second lamp body 17, and a first support 11. The lamp body assembly 10 is evenly spaced between two first supports 11. The second lamp body 17 is arranged along the length direction of the first support 11 and is located on the same side of the first support 11 as the lamp body assembly 10. The second lamp body 17 includes a second lens 170, and the thickness of the second lens 170 on the side facing the lamp body assembly 10 is greater than the thickness on the side facing away from the lamp body assembly 10. The lamp body assembly 10 of this technical solution is evenly spaced between the two first supports 11, which can ensure that multiple plant lamps 1 can be connected in series and / or in parallel to adapt to various scenarios that require plant illumination. The second lamp body 17 is arranged along the length of the first support 11 and is located on the same side of the first support 11 as the lamp body assembly 10, ensuring that the second lamp body 17 can cooperate with the lamp body assembly 10 to adjust the photosynthetic photon flux density of multiple connected and / or parallel plant lamps 1. The thickness of the second lens 170 facing the lamp body assembly 10 is greater than the thickness of the side facing away from the lamp body assembly 10, which ensures that the second lens 170 can form a polarizing structure. This allows the light emitted by the second lamp plate 171 to be deflected towards the area between the lamp body assemblies 10, supplementing the photosynthetic photon flux density at the longitudinal edge of the plant lamp 1. This reduces the difference between the photosynthetic photon flux density at the edge of the middle area of ​​the plant lamp 1 and the photosynthetic photon flux density at the center of the lamp. Thus, without affecting the expandability of the lamp, it effectively solves the technical problem of poor uniformity of photosynthetic photon flux density within the coverage area of ​​existing plant lamps 1 connected in series.

[0080] Compared with the prior art, the photosynthetic photon flux density adjustment method of a plant lamp 1 according to an embodiment of this application firstly illuminates each channel sequentially under various combinations of installation height, row spacing, and polarization angle for the first lamp plate 1001 located on the bottom surface of the lamp body and the second lamp plate 171 located on the bottom surface of the first support 11. It collects photosynthetic photon flux density response data on the gridded planting area and establishes the illumination influence relationship between channel power and polarization angle on spatial illumination distribution. Then, it acquires a top-view image of the canopy using a camera, and combines the canopy shading degree and edge compensation to construct a weighted monitoring grid in the planting area and generate a target photosynthetic photon flux density vector that changes with the crop growth stage. Based on the illumination influence relationship, it jointly optimizes the channel power vector and polarization angle vector of the first lamp plate 1001 and the second lamp plate 171, solves and compares different polarization angle candidates, and, while distinguishing between the planting area grid and the non-planted or aisle grid, considers the photosynthetic photon flux density falling in the non-planted area and exceeding the target upper limit as light waste, introducing a light waste factor to meet the target PPFD. Under the constraints of light distribution and uniformity, initial lighting parameters with minimal waste are selected, and further safety adjustments are made based on temperature rise characteristics and system energy consumption. During operation, the actual light distribution is obtained by fusing data from the photosynthetic photon flux density probe and the canopy brightness image. The channel power vector and polarization angle vector are finely adjusted in a closed loop, and the coefficients of the light influence relationship are periodically updated under low-illuminance detection sequences to compensate for device aging and environmental changes, thereby achieving high-precision, low-waste, and long-term stable control of the light environment in the target planting area.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A plant lamp, characterized in that, include: The lamp body assembly, the second lamp body, and the first bracket are provided, wherein the lamp body assembly is evenly spaced between the two first brackets; The second lamp body is arranged along the length direction of the first bracket and is located on the same side of the first bracket as the lamp body assembly; the second lamp body includes a second lens, and the thickness of the second lens on the side facing the lamp body assembly is greater than the thickness on the side facing away from the lamp body assembly.

2. The plant lamp according to claim 1, characterized in that, The lamp assembly includes a first lamp body and a mounting component, wherein the first lamp body is fixedly connected to a first bracket via the mounting component.

3. The plant lamp according to claim 2, characterized in that, The mounting component has a mounting groove on the side near the first lamp body, and the mounting component is connected to the first lamp body through the mounting groove.

4. The plant lamp according to claim 3, characterized in that, The first lamp body also includes a support member and a first lamp plate. The support member includes a first lamp groove parallel to the horizontal ground. The bottom of the mounting groove extends in a direction away from the lamp body assembly and is provided with a second lamp groove. The main body of the first lamp plate is disposed in the first lamp groove, and both ends are respectively disposed in the second lamp groove and fixed by the second lamp groove.

5. The plant lamp according to claim 4, characterized in that, The first lamp body also includes a first lens, the first lens having an arc-shaped cross-section, and sliders protruding into the concave side at both ends of the arc-shaped structure; corresponding grooves are provided on both sides of the support member, and the first lens and the support member are connected by sliders and grooves.

6. The plant lamp according to claim 4, characterized in that, The first bracket includes a bracket body, which is U-shaped in shape, and a first fixing hole is provided at the bottom of the U-shaped structure; a reinforcing member is provided along the length direction at the bottom of the first lamp slot on the side away from the first lamp board, and a second fixing hole is provided along the length direction of the reinforcing member; the bracket body is connected to the support member by fasteners passing through the first fixing hole and the second fixing hole.

7. The plant lamp according to claim 1, characterized in that, The plant light also includes a folding assembly; the folding assembly includes a first connector and a second connector, the folding assembly is disposed on a first support through the first connector and the second connector, the first connector and the second connector are hinged so that the first support connected to the first connector can be stacked with the first support connected to the second connector.

8. The plant lamp according to claim 1, characterized in that, The plant light also includes a second bracket and a third connector, with the two ends of the second bracket respectively mounted on the first bracket at both ends via the third connector.

9. The plant lamp according to claim 2, characterized in that, The power of the second lamp body is greater than or equal to one-half of that of the first lamp body.

10. A method for adjusting the photosynthetic photon flux density of a plant lamp, applied to a plant lamp comprising a first lamp plate located on the bottom surface of the lamp body and a second lamp plate located on the bottom surface of a first support, wherein the light emission directions of both the first lamp plate and the second lamp plate can be adjusted by replacing the polarizing lens, characterized in that... The method includes: Based on the installation height, row spacing, and polarization angle of the plant lights, the first light panel and the second light panel were sequentially lit and measured according to the channels. The photosynthetic photon flux density response data of the corresponding planting area grid under different polarization angles of each channel were collected, and the light influence relationship was established based on the response data. The light influence relationship is used to characterize the response relationship of the channel power and polarization angle changes to the light distribution of the target area. The canopy morphology and shading conditions of the target planting area are obtained, and a spatial grid is generated in the planting area. Weights are assigned to each grid cell according to the degree of shading to form a weighted monitoring grid for setting the target illumination. The target photosynthetic photon flux density distribution and light uniformity index of each grid unit in the planting area are determined according to the crop growth stage, and an edge compensation coefficient is added in the grid units near the edge of the planting area; the target photosynthetic photon flux density distribution is arranged in a preset order to form a target light vector, which is used to represent the target light demand of each grid unit in the weighted monitoring grid. Based on the aforementioned illumination influence relationship, the channel power vector and polarization angle vector of the first lamp panel and the second lamp panel are jointly optimized and solved to make the predicted illumination distribution approximate the target illumination vector, thereby obtaining the initial illumination parameters for performing preliminary illumination adjustment.

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