Supplemental lighting devices and methods for vine-type crops

Abstract

This invention relates to the field of cultivation technology, providing a trellis lighting device and method for vine-type crops. The aforementioned trellis lighting device for vine-type crops includes: a fixing component, multiple clamping components, and a light source; the multiple clamping components are arranged sequentially along the height direction of the fixing component, each clamping component including a first clamping part and a second clamping part, the first clamping part engaging with the fixing component, and the second clamping part used to fix the vine; the light source is disposed on the fixing component, the light source facing the vine, and the light source is divided into multiple illumination zones along the height direction to provide supplemental lighting to different positions of the vine. This trellis lighting device for vine-type crops avoids the problem of difficulty in separating the trellis rope from the vine during vine pulling and the resulting difficulty in vine retrieval; simultaneously, it can provide supplemental lighting to corresponding positions according to the actual light intensity or effective luminous flux density at different positions of the vine, ensuring sufficient light at all positions of the vine and promoting good vine growth.

Description

Technical Field

[0001] This invention relates to the field of cultivation technology, and in particular to a trellis lighting device and method for supplementing light to vine-type crops. Background Technology

[0002] In the cultivation and management of crops such as greenhouse tomatoes, trellising is a widely used technique. This technique significantly improves the utilization efficiency of greenhouse space by guiding plants to grow upwards and helps improve ventilation and light penetration between plants, thereby reducing the occurrence of pests and diseases. However, the application of trellising also brings significant challenges to the later disposal of plant debris.

[0003] Specifically, during the crop removal stage, the vine support ropes often become tightly intertwined with the tomato stems. Due to prolonged exposure to the greenhouse environment, the support ropes (especially those made of plastic or nylon, which are currently commonly used) are prone to aging, becoming brittle, and hardening. This change in physical properties causes the support ropes to easily "cut into" the stem tissue, making the bond exceptionally tight and greatly increasing the difficulty of manual separation. This not only significantly increases the labor intensity of subsequent processing but also often makes it difficult to achieve complete and thorough separation of the stems from the support ropes.

[0004] More importantly, the plant residues after harvesting typically require pretreatment such as cutting, drying, and crushing before being used for resource utilization pathways like biomass power generation, combustion heating, and the production of bio-fertilizers or biochar. Because the stems are not completely separated from the vine ropes, the non-biodegradable vine ropes (such as plastic or nylon ropes) mixed in are difficult for microorganisms to effectively decompose during subsequent processing. This not only reduces the quality of the resource-based products (e.g., impurities mixed into fertilizers), but more seriously, these materials may produce harmful substances such as microplastic particles during degradation, posing a potential threat to the soil ecological environment and affecting the sustainable development of agriculture.

[0005] Therefore, from the perspective of improving operational efficiency, reducing labor intensity, and ensuring ecological and environmental safety, there is an urgent need to develop a new type of vine hanging method that is easy to operate, easy to separate later, and environmentally friendly, in order to overcome the inherent defects of existing technologies. Summary of the Invention

[0006] This invention provides a trellis lighting device and method for vine crops, which solves the defects of existing technologies where the trellis rope is not easy to separate from the stem and the trellis rope is difficult to degrade.

[0007] This invention provides a trellis lighting device for vine-type crops, comprising: a fixing member; multiple clamping members arranged sequentially along the height direction of the fixing member, each clamping member including a first clamping part and a second clamping part, the first clamping part engaging with the fixing member, and the second clamping part used to fix the vine; and a light source disposed on the fixing member, the light source facing the vine, the light source being divided into multiple illumination zones along the height direction to provide supplemental lighting to different positions of the vine.

[0008] According to the present invention, a trellis lighting device for vine crops is provided, wherein the first clamping part includes a pair of clamps, the pair of clamps being symmetrically arranged; the first ends of the pair of clamps are connected, and the second end of each clamp is provided with a U-shaped groove, the U-shaped groove being engaged with the fixing member.

[0009] According to the present invention, a vine-supporting supplemental lighting device for vine-type crops is provided, wherein the second clamping part has a cavity and a through groove extending through its thickness, the cavity communicating with the through groove, and the cavity being used to accommodate the vine.

[0010] According to the present invention, a trellis lighting device for vine crops is provided, wherein the clamping member further includes a telescopic part, the two ends of which are respectively connected to the first clamping part and the second clamping part, and the telescopic part can adjust the distance between the light source and the vine when it extends or retracts.

[0011] According to the present invention, a vine-supporting lighting device for vine crops further includes a cutting blade. The second clamping part is provided with a first groove, which communicates with the cavity. The cutting blade is embedded in the first groove and can move into the cavity to cut the vine.

[0012] According to the present invention, a trellis lighting device for vine crops further includes: an elastic element disposed in the first groove, the two ends of the elastic element being connected to the groove wall of the first groove and the cutting blade, respectively; and a pull wire connected to the elastic element, which, when pulled, can drive the cutting blade to move into the cavity.

[0013] According to the present invention, a trellis lighting device for vine crops is provided, which further includes a handle. The handle is disposed on the fixing member and is connected to multiple pull wires. When the handle is rotated, it can drive multiple cutting blades to move into the cavity.

[0014] The present invention also provides a supplemental lighting method based on the vine-supported supplemental lighting device for vine crops as described above, comprising: calculating the target luminous flux density of the vine; obtaining the effective luminous flux density of the vine corresponding to each illumination interval; and controlling the corresponding illumination interval to supplemental lighting the vine based on the difference between the effective luminous flux density and the target luminous flux density.

[0015] According to a supplemental lighting method provided by the present invention, the step of controlling the corresponding illumination interval to supplement the vines based on the difference between the effective luminous flux density and the target luminous flux density includes: if the current time is in a preset nighttime supplemental lighting period, then calculate the daily cumulative light intensity of the vines up to the current time; if the daily cumulative light intensity is less than the minimum daily cumulative light intensity, then supplement the vines with light.

[0016] According to a supplemental lighting method provided by the present invention, the step of controlling the corresponding illumination interval to supplement the vines based on the difference between the effective luminous flux density and the target luminous flux density further includes: if the current time is not a preset nighttime supplemental lighting period, and if the effective luminous flux density up to the current time is less than the minimum effective luminous flux density, then supplemental lighting is applied to the vines.

[0017] The vine-supporting supplemental lighting device provided by this invention replaces the vine-supporting rope with multiple clamping components, avoiding the problem of the vine-supporting rope being difficult to separate from the vine during the pulling process and affecting the vine recovery; at the same time, it can supplement the lighting at the corresponding positions according to the actual light intensity or effective light flux density at different positions of the vine, so that all positions of the vine have sufficient light and the vine has good growth. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the trellis lighting device for vine-type crops provided by the present invention.

[0020] Figure 2 yes Figure 1 The diagram shows the structure of the clamping component.

[0021] Figure 3 yes Figure 2 The enlarged view of point A shown in the image.

[0022] Figure 4 yes Figure 2 The image shows a cross-sectional view of the clamping component.

[0023] Figure 5 yes Figure 4 The enlarged view of point B shown in the image.

[0024] Figure 6This is a flowchart of the PWM dimming algorithm for the upper part of the vine.

[0025] Figure 7 This is a flowchart of the PWM dimming algorithm in the middle of the vine.

[0026] Figure 8 This is a flowchart of the PWM dimming algorithm for the lower part of the vine.

[0027] Figure label:

[0028] 10. Clamping component; 11. First clamping part; 12. Second clamping part; 13. Telescopic part; 121. Cavity; 122. Through groove; 123. First groove; 124. Second groove; 20. Fixing component; 30. Heat sink; 40. Handle; 50. Cutting blade; 60. Elastic component; 70. Pull wire; 80. Guide rod. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0030] The following is combined Figures 1-5 This invention describes a trellis lighting device and method for suspending vines and providing supplemental lighting for vine-type crops.

[0031] like Figure 1 As shown in the embodiment of the present invention, the vine-supporting supplemental lighting device for vine-like crops includes: multiple clamping members 10, a fixing member 20, and a light source. The multiple clamping members 10 are arranged sequentially along the height direction of the fixing member 20. Each clamping member 10 includes a first clamping part 11 and a second clamping part 12. The first clamping part 11 engages with the fixing member 20, and the second clamping part 12 is used to fix the vine. The light source is located on the fixing member 20 and faces the vine. The light source is divided into multiple illumination zones along the height direction to provide supplemental lighting to different positions of the vine.

[0032] Specifically, the fixing member 20 is vertically arranged, and the light source can be set on one side of the fixing member 20 or on both opposite sides. When light sources are set on both opposite sides of the fixing member 20, multiple clamping members 10 can be set on both opposite sides of the fixing member 20. One end of the clamping member 10 is engaged with the fixing member 20, and the other end is used to fix the vine, so that the light source faces the vine to provide supplemental lighting. In this embodiment, the vine is clamped by the clamping member 10, and the clamping member 10 can be removed when pulling the vine to retrieve it, without the problems of the hanging rope being difficult to separate from the vine, or the hanging rope being difficult to degrade, which would affect the vine retrieval.

[0033] Furthermore, the clamping member 10 can slide along the fixing member 20 to flexibly adjust the position of the clamping member 10 according to the growth of the vine.

[0034] In this embodiment, the light source located on one side of the fixing member 20 can be multiple light strips, which are arranged sequentially along the height direction of the fixing member 20. The multiple light strips divide the vine's illumination area into multiple illumination zones. According to the actual amount of light at different locations on the vine, the corresponding light strips can be turned on to supplement the light in vine locations with less light, so that the vine has sufficient light duration at each location to meet its growth needs.

[0035] The vine-supporting supplemental lighting device for vine crops provided in this embodiment of the invention replaces the vine-supporting rope with multiple clamping components, avoiding the problem of the vine-supporting rope being difficult to separate from the vine during the pulling of the vine and affecting the vine recovery; at the same time, it can supplement the lighting at the corresponding positions according to the actual light intensity or effective light flux density at different positions of the vine, so that all positions of the vine have sufficient light and the vine has good growth.

[0036] like Figure 2 As shown, in an embodiment of the present invention, the first clamping part 11 includes a pair of clamps, the pair of clamps are symmetrically arranged, the first ends of the pair of clamps are connected, and the second end of each clamp is provided with a U-shaped groove, which is engaged with the fixing member 20.

[0037] Specifically, in one embodiment of the present invention, the fixing member 20 can be a strip with a rectangular or square cross-sectional shape. The surface of the fixing member 20 is provided with a pair of oppositely arranged protrusions. The pair of U-shaped grooves of the first clamping part 11 respectively engage with the pair of protrusions to fix the clamping member 10 on the fixing member 20.

[0038] In another embodiment of the present invention, the fixing member 20 may include a pair of first plates and a pair of second plates, the pair of first plates being arranged in parallel, the pair of second plates being arranged in parallel between the pair of first plates, and the two ends of the first plates extending beyond the pair of second plates. The pair of U-shaped grooves of the first clamping part 11 respectively engage with the pair of first plates to fix the clamping member 10 on the fixing member 20.

[0039] like Figure 2 As shown, in an embodiment of the present invention, the second clamping part 12 has a cavity 121 and a through groove 122 extending through its thickness. The cavity 121 communicates with the through groove 122, and the vine enters the cavity 121 through the through groove 122 to fix the vine.

[0040] like Figure 2 As shown, in an embodiment of the present invention, the clamping member 10 further includes a telescopic part 13. The two ends of the telescopic part 13 are respectively connected to the first clamping part 11 and the second clamping part 12. When the telescopic part 13 extends or retracts, it can adjust the distance between the light source and the vine.

[0041] Specifically, in the embodiments of the present invention, the telescopic part 13 can be a telescopic rod structure, which can adjust the distance between the light source and the vine when the telescopic rod is pulled; further, the telescopic part 13 may also include an electric push rod, which is disposed in the telescopic rod structure. When the button is pressed, the electric push rod is activated to push the telescopic rod to extend or retract.

[0042] like Figure 3 As shown, in an embodiment of the present invention, the vine-supporting lighting device for vine crops further includes a cutting blade 50. The second clamping part 12 is provided with a first groove 123, which communicates with the cavity 121. The cutting blade 50 is embedded in the first groove 123 and can move into the cavity 121 to cut the vine.

[0043] Specifically, when pulling the vines, the cutting blade 50 can be pushed to move from the first groove 123 into the cavity 121 to cut the vines. In this embodiment, the first groove 123 is a fan-shaped groove, and the cutting blade 50 is also a fan-shaped structure.

[0044] Furthermore, in an embodiment of the present invention, the trellis lighting device for vine-like crops further includes: an elastic element 60 and a pull wire 70. The elastic element 60 is disposed within the first groove 123, and its two ends are respectively connected to the groove wall of the first groove 123 and the cutting blade 50. The pull wire 70 is connected to the elastic element 60, and when the pull wire 70 is pulled, it can drive the cutting blade 50 to move into the cavity 121.

[0045] Specifically, in this embodiment, when pulling the vines, the pull line 70 is pulled, causing the elastic element 60 to extend. The cutting blade 50 extends from the first groove 123 into the cavity 121 to cut the vines. After cutting, the pull line 70 is released, and the elastic element 60 uses its elastic force to retract the cutting blade 50 back into the first groove 123.

[0046] like Figure 4 and Figure 5 As shown, the bottom of the first groove 123 is provided with a second groove 124, and the length direction of the second groove 124 is consistent with the length direction of the telescopic part 13. One end of the guide rod 80 is embedded in the second groove 124, and the other end of the guide rod 80 is connected to the elastic member 60. The pull wire 70 is connected to the guide rod 80. When the pull wire 70 is pulled, the guide rod 80 slides along the second groove 124 to drive the elastic member 60 to extend. Correspondingly, when the pull wire 70 is released, the elastic member 60 resets using elastic force, driving the guide rod 80 back to its initial position along the second groove 124.

[0047] Furthermore, both the second clamping part 12 and the telescopic part 13 are provided with wire grooves for accommodating the pull wire 70. Specifically, the wire groove located in the second clamping part 12 is semi-circular. The first end of the pull wire 70 is connected to the guide rod 80, and the second end of the pull wire 70 extends along the length direction of the second groove 124 and then is laid along the semi-circular wire groove. The wire groove located in the telescopic part 13 is a straight wire groove. The second end of the pull wire 70 is laid along the straight wire groove, passes through the fixing member 20, extends into the fixing member 20, and then extends out of the fixing member 20. When the pull wire 70 is pulled from outside the fixing member 20, the pull wire 70 can drive the guide rod 80 to move, thereby driving the cutting blade 50 to extend into the cavity 121.

[0048] Furthermore, such as Figure 1 As shown in the embodiment of the present invention, the vine-supporting lighting device for vine crops also includes a handle 40, which is disposed on the fixing member 20. The handle 40 is connected to multiple pull wires 70. When the handle 40 is rotated, multiple cutting blades 50 can be moved into the cavity 121 through the pull wires 70 to cut the vines. When the handle 40 is rotated in the opposite direction, the multiple pull wires 70 are released, allowing the multiple cutting blades 50 to reset simultaneously. In this embodiment, by connecting multiple pull wires 70 to the handle 40, the vines in multiple second clamping parts 12 can be cut simultaneously when the handle 40 is rotated, improving the vine recovery efficiency. At the same time, when the handle 40 is rotated in the opposite direction, the multiple cutting blades 50 can be reset simultaneously, facilitating secondary use.

[0049] In an embodiment of the present invention, the vine-supporting supplemental lighting device for vine-like crops further includes a sensing module and a controller. The sensing module is disposed in the first clamping part 11 and includes an environmental sensor and an image acquisition device. The environmental sensor is used to acquire the natural light radiation intensity, temperature, and carbon dioxide concentration in the greenhouse at the current time. The image acquisition device is used to acquire image information of the vines. The sensing module sends the detected data to the controller, which has a built-in algorithm model. The algorithm model calculates the target luminous flux density of the vines and controls the light source to supplement the vines at the corresponding positions based on the difference between the target luminous flux density and the actual luminous flux density of each illumination interval.

[0050] This invention also provides a supplemental lighting method based on a trellis lighting device for vine-type crops, specifically including the following steps:

[0051] Calculate the target luminous flux density of the vines; obtain the effective luminous flux density of the vines for each illumination interval; based on the difference between the effective luminous flux density and the target luminous flux density, control the corresponding illumination interval to provide supplemental lighting for the vines.

[0052] Specifically, in this embodiment, the light source is divided into multiple illumination zones along its height direction. Assuming the illumination zones are upper, middle, and lower, the vine is correspondingly divided into upper, middle, and lower sections. Figure 6 , Figure 7 and Figure 8 As shown, based on the data collected by the sensing module, the target luminous flux density of the vine is calculated. The effective luminous flux density of the upper, middle and lower parts of the vine is obtained by the environmental sensor and compared with the target luminous flux density. If the effective luminous flux density is less than the target luminous flux density, supplemental lighting is applied to the corresponding vine position.

[0053] Among them, Figure 6 , Figure 7 and Figure 8 In the middle, P tg U, P tg M, P tg D represents the target luminous flux density of the upper, middle, and lower parts of the vine; PU, PM, and PD represent the effective luminous flux density of the upper, middle, and lower parts of the vine; ΔPU, ΔPM, and ΔPD represent the luminous flux density changes of the upper, middle, and lower parts of the vine; ΔPWM-U, ΔPWM-M, and ΔPWM-D represent the PWM duty cycle adjustments of the upper, middle, and lower parts of the vine; α is the coefficient corresponding to the light source luminous flux density and the input PWM, determined by the relationship and ratio between the light source luminous flux density, the drive current, and the PWM duty cycle; Z B U, Z B M, Z B D represents the previous PWM duty cycle for the upper, middle, and lower parts of the vine, respectively; ZU, ZM, and ZD represent the PWM duty cycles for the upper, middle, and lower parts of the vine, respectively.

[0054] The supplemental lighting method provided in this invention divides the light source into multiple illumination zones. Based on the difference between the actual effective luminous flux density and the target luminous flux density at different parts of the vine, the corresponding illumination zones are controlled to supplement the vine with light, thereby ensuring that each part of the vine has sufficient light and that the vine has good growth.

[0055] Furthermore, in an embodiment of the present invention, an SVR algorithm is used to construct a luminous flux density prediction model. In this model, the input is the data collected by the sensing module, and the output is the real-time luminous flux density. The luminous flux density prediction model is as follows:

[0056]

[0057] in, and Lagrange multipliers are introduced in the dual constraint problem of SVR; And these are the support vectors for SVR; It is the kernel function of SVR. Let n be a solution to a convex optimization problem, where n is the number of training samples.

[0058] Because of the nonlinear variations among the sample data, it is necessary to select a suitable kernel function to map the data to the feature space and then find the optimal regression plane in the feature space. In this application, a Gaussian kernel function is used for data mapping. The expression for the Gaussian kernel function is:

[0059]

[0060] in, This is the width parameter of the function; The independent variable of the training set function; It is the center of the kernel function.

[0061] The daily light environment in greenhouses varies considerably. Therefore, Daily Light Integral (DLI) is used to represent the cumulative sum of luminous flux density throughout the day, thereby reducing errors caused by the daily variations in greenhouse light intensity. The mathematical expression for DLI is as follows:

[0062]

[0063] in, The instantaneous light flux density, For time periods.

[0064] Furthermore, the step of controlling the corresponding illumination interval to supplement the vines based on the difference between the effective luminous flux density and the target luminous flux density further includes: if the current time is within a preset nighttime supplementary lighting period, then calculate the daily cumulative light intensity of the vines up to the current time; if the daily cumulative light intensity is less than the minimum daily cumulative light intensity, it indicates that the vines are not adequately illuminated at that location, and then the light source in the corresponding illumination interval needs to be turned on during the nighttime supplementary lighting period to supplement the vines.

[0065] In an embodiment of the present invention, the step of controlling the corresponding illumination interval to supplement the vines based on the difference between the effective luminous flux density and the target luminous flux density further includes: if the current time is not a preset nighttime supplementary lighting period, and if the effective luminous flux density up to the current time is less than the minimum effective luminous flux density, then supplement the vines with light.

[0066] Specifically, in the embodiments of the present invention, luminous flux density refers to the luminous flux illuminating a unit area of ​​the vine. In this embodiment, if the effective luminous flux density is less than the minimum effective luminous flux density by a certain time period, it indicates that the light intensity is insufficient. By the time of that time period, the weather may be cloudy. In this case, supplemental lighting can be provided to the vine parts where the effective luminous flux density is less than the minimum effective luminous flux density.

[0067] 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 of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A trellis lighting device for vine-type crops, characterized in that, include: Fasteners; Multiple clamping members are arranged sequentially along the height direction of the fixing member. Each clamping member includes a first clamping part and a second clamping part. The first clamping part is engaged with the fixing member. The second clamping part is used to fix the vine. The second clamping part has a cavity and a through groove that penetrate its thickness. The cavity communicates with the through groove. The cavity is used to accommodate the vine. A light source is provided on the fixing member, the light source is directed toward the vine, and the light source is divided into multiple illumination zones along the height direction to provide supplemental lighting to different positions of the vine; The cutting blade has a second clamping part with a first groove, which communicates with the cavity. The cutting blade is embedded in the first groove and can move into the cavity to cut the vines.

2. The trellis lighting device for vine-type crops according to claim 1, characterized in that, The first clamping part includes a pair of jaws, and the pair of jaws are symmetrically arranged; The first ends of the pair of grippers are connected, and the second end of each gripper is provided with a U-shaped groove, which engages with the fixing member.

3. The trellis lighting device for vine-type crops according to claim 1, characterized in that, The clamping component also includes a telescopic part, the two ends of which are respectively connected to the first clamping part and the second clamping part. When the telescopic part extends or retracts, it can adjust the distance between the light source and the vine.

4. The trellis lighting device for vine-type crops according to claim 1, characterized in that, Also includes: An elastic element is disposed in the first groove, and the two ends of the elastic element are respectively connected to the groove wall of the first groove and the cutting blade; A pull wire, connected to the elastic element, can move the cutting blade into the cavity when the pull wire is pulled.

5. The trellis lighting device for vine-type crops according to claim 4, characterized in that, It also includes a handle, which is disposed on the fixing member and connected to multiple pull wires. When the handle is rotated, it can drive multiple cutting blades to move into the cavity.

6. A method for supplemental lighting based on the trellis lighting device for vine-type crops according to any one of claims 1-5, characterized in that, include: Calculate the target luminous flux density of the vine; Obtain the effective luminous flux density of the vines corresponding to each illumination interval; Based on the difference between the effective luminous flux density and the target luminous flux density, the corresponding illumination interval is controlled to provide supplemental lighting for the vines.

7. The supplemental lighting method according to claim 6, characterized in that, The step of controlling the corresponding illumination interval to supplement the vines with light based on the difference between the effective luminous flux density and the target luminous flux density includes: If the current time falls within the preset nighttime supplemental lighting period, the daily cumulative light intensity of the vines up to the current time is calculated. If the daily cumulative light intensity is less than the minimum daily cumulative light intensity, supplemental lighting is applied to the vines.

8. The supplemental lighting method according to claim 6, characterized in that, The step of controlling the corresponding illumination interval to supplement the vines with light based on the difference between the effective luminous flux density and the target luminous flux density further includes: If the current time is not within the preset nighttime supplemental lighting period, and if the effective luminous flux density up to the current time is less than the minimum effective luminous flux density, then supplemental lighting will be applied to the vines.

Images