Intelligent LED plant lighting and light supplementing system

Abstract

The invention relates to the technical field of plant lighting and light supplementing, in particular to an intelligent LED plant lighting and light supplementing system. The device is applied to a rubber forest planting environment and is composed of a multi-layer adjustable light supplementing module, an environment sensing module, an intelligent control module and a three-dimensional supporting structure. Wherein the multi-layer adjustable light supplementing module is composed of a top canopy light supplementing unit and a bottom under-forest light supplementing unit, the environment sensing module comprises an illumination intensity sensor, a canopy temperature sensor, a rubber tree latex flow velocity monitor and a multispectral imager, and the intelligent control module is provided with a rubber tree phenological period database and a self-adaptive algorithm model. The three-dimensional supporting structure comprises a height-adjustable support and a rotary holder. According to the invention, through fusion of multi-dimensional environment perception, dynamic light quality regulation and control and bionic support structure design, the problems of poor adaptability, low light energy utilization rate, high maintenance cost and the like existing in a traditional light supplement technology in a rubber forest scene are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of plant lighting supplementary lighting, and in particular to an intelligent LED plant lighting supplementary lighting system. Background Art

[0002] As a typical tropical cash crop, the growth, development, and rubber production efficiency of rubber trees are highly dependent on light conditions. Under natural light conditions, the canopy structure of rubber trees is complex, with significant differences in light intensity between leaves and understory areas at different heights. Light quality requirements are particularly dynamic during key phenological stages, such as the seedling, mature, and tapping stages. For example, a combination of red and far-red light can regulate photomorphogenesis and photoperiodic responses, while a combination of blue and ultraviolet light influences secondary metabolite synthesis and stress resistance.

[0003] Existing plant lighting systems still have many limitations in rubber forest scenarios. On the one hand, traditional lighting equipment mostly uses a single spectrum or a fixed ratio of light sources, and cannot adjust the light quality and photoperiod in real time according to the different growth stages of rubber trees (such as the seedling lignification period and the harvesting preparation period) and environmental parameters (such as canopy temperature and latex flow rate). This leads to low efficiency in light energy utilization and may even cause photoinhibition. On the other hand, lighting solutions for understory areas often ignore the needs of weed suppression and pest and disease control, and lack spectrum combination design, resulting in additional weed control and pesticide application costs. Summary of the Invention

[0004] The present invention provides an intelligent LED plant lighting fill light system, which solves the problems of poor adaptability, low light energy utilization and high maintenance cost of traditional fill light technology in rubber forest scenes by integrating multi-dimensional environmental perception, dynamic light quality control and bionic support structure design.

[0005] The technical solution adopted by the present invention is: an intelligent LED plant lighting supplementary light system, which is applied to the rubber forest planting environment and consists of a multi-layer adjustable supplementary light module, an environmental perception module, an intelligent control module, and a three-dimensional support structure.

[0006] The multi-layer adjustable fill light module consists of a top canopy fill light unit and a bottom understory fill light unit. The top canopy fill light unit uses a combination of high-power red LED (wavelength 630-660nm) and far-red LED (wavelength 700-740nm) as a light source, and the bottom understory fill light unit uses a combination of blue LED (wavelength 450-470nm) and UV A band LED (wavelength 315-400nm) as a light source.

[0007] The environmental perception module includes a light intensity sensor, a canopy temperature sensor, a rubber tree latex flow rate monitor and a multispectral imager;

[0008] The intelligent control module is equipped with a rubber tree phenological period database and an adaptive algorithm model, and the algorithm model dynamically adjusts the light quality ratio and the illumination duration according to the light requirements of the different growth stages of the rubber tree;

[0009] The three-dimensional support structure includes a height-adjustable bracket and a rotating pan-tilt platform. The height-adjustable bracket is equipped with a laser ranging unit for real-time matching of the crown height of the rubber tree.

[0010] As a further improvement of the present invention, the ratio of red light to far-red light of the top canopy lighting unit is dynamically adjusted to 1:0.3-0.5, and the specific light cycle stimulation is started 8-12 hours before the rubber tapping operation. The ratio of blue light to ultraviolet light of the bottom understory lighting unit is set to 3:1, which is used to inhibit the growth of weeds under the forest and enhance the disease resistance of rubber trees.

[0011] As a further improvement of the present invention, the environmental perception module is integrated with rubber tree latex bioelectric signal collection electrodes, which are arranged 5-8 cm above the tapping edge to monitor the latex secretion dynamics in real time and establish a negative feedback regulation mechanism with the fill light intensity.

[0012] As a further improvement of the present invention, the adaptive algorithm model includes a canopy light energy utilization optimization submodule, a latex yield increase compensation submodule, and a pest and disease early warning submodule.

[0013] As a further improvement of the present invention, the canopy light energy utilization optimization submodule dynamically adjusts the supplementary lighting spectrum through the chlorophyll fluorescence parameters obtained by the multispectral imager; when the latex yield compensation submodule detects that the latex flow rate has dropped by more than 15% for three consecutive days, it automatically increases the proportion of 630nm red light and extends the supplementary lighting time by 2-3 hours; the pest and disease warning submodule identifies the early symptoms of powdery mildew through changes in ultraviolet band reflectance and starts the prevention and control spectrum mode.

[0014] As a further improvement of the present invention, the three-dimensional support structure adopts a bionic design, an anti-stick coating made of rubber tree secretions is provided at the joints of the height-adjustable bracket, and the rotating pan-tilt head has a ±15° automatic deflection function to avoid the trajectory of fallen leaves from rubber trees.

[0015] As a further improvement of the present invention, the intelligent control module has a built-in spectral fingerprint library of rubber tree varieties, which contains the optimal light environment parameter combinations corresponding to the seedling lignification period, harvesting preparation period, and high-yield maintenance period of major cultivated varieties such as GT1, RRIM600, and PR107.

[0016] The beneficial effects of the present invention are as follows: the present invention optimizes the photosynthesis and photoperiod response of the rubber tree canopy through the synergistic effect of the dynamic ratio of red light / far-red light at the top and blue light / ultraviolet light at the bottom, and inhibits the growth of weeds under the forest and activates disease resistance; combined with multi-parameter feedback such as latex flow rate and chlorophyll fluorescence, it achieves adaptive matching of light quality, light intensity and photoperiod, thereby increasing latex yield and reducing the cost of weed control and pesticide application.

[0017] The present invention is based on an adaptive algorithm model of the rubber tree phenological period database and spectral fingerprint library, which can identify the light requirements of different varieties and growth stages and dynamically avoid the risk of light inhibition; the bionic support structure uses an anti-stick coating, laser ranging and pan-tilt deflection design to effectively deal with the adhesion of rubber tree secretions, changes in canopy height and leaf fall interference, extend the equipment maintenance cycle, and significantly improve the stability and durability of the system in tropical high-humidity environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a system block diagram of an intelligent LED plant lighting supplement system of the present invention.

[0019] As shown in the figure: 1. Multi-layer adjustable fill light module; 101. Top canopy fill light unit; 102. Bottom understory fill light unit; 2. Environmental perception module; 201. Light intensity sensor; 202. Canopy temperature sensor; 203. Rubber tree latex flow rate monitor; 204. Multispectral imager; 3. Intelligent control module; 301. Rubber tree phenological period database; 302. Adaptive algorithm model; 303. Rubber tree variety spectral fingerprint library; 4. Three-dimensional support structure; 401. Height-adjustable bracket; 402. Rotating pan-tilt head; 403. Laser ranging unit. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the embodiments described herein are only used to explain this application and are not intended to limit this application.

[0021] The present invention provides an intelligent LED plant lighting supplementary light system, which is applied to a rubber forest planting environment and consists of a multi-layer adjustable supplementary light module 1, an environment sensing module 2, an intelligent control module 3, and a three-dimensional support structure 4.

[0022] The multi-layer adjustable fill-light module 1 in the present invention consists of a top canopy fill-light unit 101 and a bottom understory fill-light unit 102. The top canopy fill-light unit 101 uses a combined light source of high-power red LEDs (wavelength 630-660nm) and far-red LEDs (wavelength 700-740nm), while the bottom understory fill-light unit 102 uses a combined light source of blue LEDs (wavelength 450-470nm) and UV-A-band LEDs (wavelength 315-400nm). The ratio of red light to far-red light in the top canopy fill-light unit 101 is dynamically adjusted to 1:0.3-0.5. A specific photoperiod stimulation is initiated 8-12 hours before rubber tapping. The ratio of blue light to ultraviolet light in the bottom understory fill-light unit 102 is set to 3:1, thereby inhibiting the growth of weeds under the forest and enhancing the disease resistance of rubber trees.

[0023] The environmental perception module 2 in the present invention includes a light intensity sensor 201, a canopy temperature sensor 202, a rubber tree latex flow rate monitor 203 and a multispectral imager 204. The environmental perception module 2 is integrated with a rubber tree latex bioelectric signal collection electrode, which is arranged 5-8 cm above the tapping edge to monitor the latex secretion dynamics in real time and establish a negative feedback regulation mechanism with the supplementary light intensity. The canopy light energy utilization optimization submodule dynamically adjusts the supplementary light spectrum through the chlorophyll fluorescence parameters obtained by the multispectral imager 204; when the latex yield compensation submodule detects that the latex flow rate has dropped by more than 15% for three consecutive days, it automatically increases the proportion of 630nm red light and extends the supplementary light time by 2-3 hours; the pest and disease warning submodule identifies the early symptoms of powdery mildew through changes in ultraviolet band reflectance and starts the prevention and control spectrum mode.

[0024] In the present invention, the intelligent control module 3 is configured with a rubber tree phenological period database 301 and an adaptive algorithm model 302. The algorithm model dynamically adjusts the light quality ratio and illumination duration according to the light requirements of the rubber tree in different growth stages, namely the seedling stage, the tree stage, and the tapping stage. The adaptive algorithm model 302 includes a canopy light energy utilization optimization submodule, a latex yield increase compensation submodule, and a disease and pest early warning submodule. The intelligent control module 3 has a built-in rubber tree variety spectral fingerprint library 303. The fingerprint library contains the optimal light environment parameter combinations corresponding to the main cultivated varieties such as GT1, RRIM600, and PR107 in the seedling lignification period, the harvesting preparation period, and the high-yield maintenance period.

[0025] The three-dimensional support structure 4 of the present invention includes a height-adjustable bracket 401 and a rotating platform 402. The height-adjustable bracket 401 is equipped with a laser ranging unit 403 for real-time matching of the height of the rubber tree canopy. The three-dimensional support structure 4 adopts a bionic design. The joints of the height-adjustable bracket 401 are provided with an anti-stick coating made of rubber tree secretions. The rotating platform 402 has a ±15° automatic deflection function to avoid the trajectory of falling leaves of the rubber tree.

[0026] Example:

[0027] Taking the GT1 variety rubber forest in a rubber planting base in Hainan as an example, the intelligent LED plant lighting supplement system of the present invention is specifically implemented.

[0028] Step 1. System deployment and initialization

[0029] A three-dimensional support structure 4 is arranged in a 10m x 10m grid within the rubber forest. The height-adjustable brackets 401 are initially set at 5m from the ground (matching the average canopy height of rubber trees). A rotating pan / tilt 402 is mounted on the top of the brackets, and a laser ranging unit 403 monitors canopy height changes in real time with an accuracy of ±2cm. A polytetrafluoroethylene (PTFE) anti-stick coating is sprayed on the bracket joints to prevent adhesion of rubber tree secretions.

[0030] Step 2. Environmental Perception Module Calibration

[0031] A latex bioelectrical signal collection electrode (sampling frequency 10 Hz) was installed 6 cm above the tapping edge and calibrated in conjunction with the latex flow rate monitor 203. A multispectral imager 204 scanned the canopy daily from 9:00 AM to 11:00 AM, acquiring chlorophyll fluorescence index (Fv / Fm) and ultraviolet (380 nm) reflectance data to establish a baseline for canopy health.

[0032] Step 3. Fill light strategy execution

[0033] Phase 1 (harvesting preparation period):

[0034] Top canopy light supplement unit 101: start red light (650nm) and far red light (720nm) in a ratio of 1:0.4, open a 6-hour photoperiod stimulation from 18:00 to 24:00 every day, and set the light intensity to 800μmol·m -2 ·s -1 .

[0035] Bottom forest supplementary lighting unit 102: blue light (460nm) and ultraviolet light (365nm) in a ratio of 3:1, intermittent irradiation from 04:00 to 08:00 every day (on for 10 minutes every 30 minutes), light intensity 200μmol·m -2 ·s -1 .

[0036] Phase 2 (high yield maintenance period):

[0037] When the latex flow rate monitor 203 detects an 18% decrease in flow rate for three consecutive days, the latex yield compensation submodule is triggered: (1) the red light ratio is increased to 70% (originally 60%), and the light supplementation time is extended to 21:00-03:00 every day (increased by 2 hours); (2) the chlorophyll fluorescence monitoring of the multispectral imager 204 is synchronously activated, and if the Fv / Fm value is lower than 0.75, the light intensity is automatically reduced to 600 μmol·m-2 ·s -1 To avoid photoinhibition.

[0038] Step 4. Pest and disease early warning and intervention

[0039] The multispectral imager 204 detected an abnormal increase in the ultraviolet reflectance in a certain area (an increase of 12% compared to the baseline value). The pest and disease warning submodule determined that it was an early infection of powdery mildew and immediately executed the following: (1) adjusting the ultraviolet light ratio of the bottom fill light unit 102 to 40% (originally 25%), switching the wavelength to 310nm, and continuously irradiating for 4 hours per day; (2) adjusting the red light ratio of the top fill light unit 101 in the associated area to 1:0.3 to enhance the disease resistance metabolism of the rubber tree.

[0040] Implementation effect verification

[0041] After 3 months of operation, compared with the control group that did not use this system: (1) Latex production: the average daily latex flow rate of the experimental group increased by 19.3%, and the average monthly production of a single plant reached 158 mL (132 mL for the control group); (2) Weed suppression rate: the biomass of understory weeds decreased by 67%, and the amount of herbicide used decreased by 42%; (3) Equipment maintenance: the anti-stick coating extended the bracket cleaning cycle from 7 days to 21 days, and the pan-tilt deflection function successfully avoided the impact of fallen leaves by 98.5%.

[0042] As can be seen from the above embodiments, the intelligent LED plant lighting supplementary light system of the present invention shows significant advantages in practical applications, can effectively improve the rubber production efficiency of rubber trees, reduce the competition of weeds growing under the forest for nutrients, and reduce equipment maintenance costs and frequency. This supplementary light system based on multi-dimensional precise perception and intelligent regulation not only provides an efficient and sustainable light environment solution for rubber forest planting, but also provides a valuable reference for the development of supplementary light technology for other economic crops. It is expected to be further promoted and applied in the agricultural field, helping to achieve a more intelligent and green modern agricultural production model.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intelligent LED plant lighting supplementary light system, characterized in that: The invention is applied to a rubber forest planting environment and is composed of a multi-layer adjustable light supplement module (1), an environment sensing module (2), an intelligent control module (3), and a three-dimensional support structure (4). The multi-layer adjustable fill-light module (1) is composed of a top canopy fill-light unit (101) and a bottom understory fill-light unit (102), wherein the top canopy fill-light unit adopts a combined light source of a high-power red LED (wavelength 630-660 nm) and a far-red LED (wavelength 700-740 nm), and the bottom understory fill-light unit adopts a combined light source of a blue LED (wavelength 450-470 nm) and an ultraviolet A band LED (wavelength 315-400 nm). The environmental perception module (2) comprises a light intensity sensor (201), a canopy temperature sensor (202), a rubber tree latex flow rate monitor (203) and a multispectral imager (204); The intelligent control module (3) is equipped with a rubber tree phenological period database (301) and an adaptive algorithm model (302), wherein the algorithm model dynamically adjusts the light quality ratio and the illumination duration according to the light requirements of the rubber tree at different growth stages (seedling stage, tree stage, and rubber tapping stage); The three-dimensional support structure (4) comprises a height-adjustable bracket (401) and a rotating platform (402); the height-adjustable bracket (401) is equipped with a laser ranging unit (403) for real-time matching of the crown height of the rubber tree.

2. The intelligent LED plant lighting supplementary light system according to claim 1, characterized in that: The red light and far-red light ratio of the top canopy light supplement unit (101) is dynamically adjusted to 1:0.3-0.5, and a specific photoperiod stimulation is started 8-12 hours before the rubber tapping operation. The blue light and ultraviolet light ratio of the bottom understory light supplement unit (102) is set to 3:1, which is used to inhibit the growth of weeds under the forest and enhance the disease resistance of rubber trees.

3. The intelligent LED plant lighting supplementary light system according to claim 1, characterized in that: The environmental sensing module (2) is integrated with rubber tree latex bioelectrical signal collection electrodes, which are arranged 5-8 cm above the rubber tapping edge to monitor the latex secretion dynamics in real time and establish a negative feedback regulation mechanism with the supplementary light intensity.

4. The intelligent LED plant lighting supplementary light system according to claim 1, characterized in that: The self-adaptive algorithm model (302) comprises a canopy light energy utilization optimization submodule, a latex yield increase compensation submodule, and a pest and disease early warning submodule.

5. The intelligent LED plant lighting supplementary light system according to claim 4, characterized in that: The canopy light energy utilization optimization submodule dynamically adjusts the supplementary light spectrum based on the chlorophyll fluorescence parameters obtained by the multispectral imager (204); the latex yield compensation submodule automatically increases the proportion of 630nm red light and extends the supplementary light duration by 2-3 hours when it detects that the latex flow rate has dropped by more than 15% for three consecutive days; the pest and disease early warning submodule identifies the early symptoms of powdery mildew through changes in ultraviolet band reflectance and activates a prevention and control spectrum mode.

6. The intelligent LED plant lighting supplementary light system according to claim 1, characterized in that: The three-dimensional support structure (4) adopts a bionic design, the joints of the height-adjustable bracket (401) are provided with an anti-stick coating made of rubber tree secretions, and the rotating platform (402) has a ±15° automatic deflection function to avoid the trajectory of fallen leaves from the rubber tree.

7. The intelligent LED plant lighting supplementary light system according to claim 1, characterized in that: The intelligent control module (3) has a built-in rubber tree variety spectrum fingerprint library (303), which contains the optimal light environment parameter combinations corresponding to the main cultivated varieties such as GT1, RRIM600, PR107 during the seedling lignification period, the harvesting preparation period, and the high-yield maintenance period.

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