Self-adaptive chlorophyll lighting effect plant lighting system

Abstract

The utility model provides a self-adaptive chlorophyll lighting effect plant lighting system which comprises an LED light source, a circuit board, a power module, a control module and a current driver. The control module sends a control instruction based on a specific spectrum, the specific spectrum is a red-green-blue three-primary-color combined spectrum based on chlorophyll absorption spectrum factors of natural light in different time periods, and the chlorophyll absorption spectrum factors (CAE) are defined as the ratio of chlorophyll absorption radiation light efficiency (CLER) to radiation light efficiency (LER). The chlorophyll absorption radiation luminous efficiency (CLER) is the ratio of chlorophyll absorption luminous flux to radiation flux; the current driver receives the control instruction and adjusts the current of the LED light source; the LED light source comprises a plurality of LED lamp beads which are distributed in an array mode. The LED lamp beads are composed of an even number of blue lamps, an even number of red lamps and an odd number of green lamps. The illumination system can intelligently adjust illumination according to photosynthesis requirements and time changes of plants so as to optimize the efficiency and effect of plant illumination.

Description

Technical Field

[0001] The utility model relates to the technical field of LED lighting, in particular to an adaptive chlorophyll light effect plant lighting system. Background Art

[0002] The spectrum of natural light matches the light quality to which plants have evolved over time. This effectively promotes photosynthesis and regulates their growth cycles, helping them synthesize key nutrients, including vitamins and antioxidants. These substances may not be fully synthesized when relying solely on artificial light sources. However, the practical use of natural light is limited by weather variations, geographic location, and seasonal changes, resulting in unstable availability. Therefore, to ensure healthy plant growth even when natural light conditions are less than ideal, artificial lighting, particularly LED horticultural lighting, has become a necessary supplement. With its high energy efficiency, long lifespan, and adjustable spectrum, LED horticultural lighting is gradually becoming a leading edge of research and application.

[0003] With the continued growth of the global population and accelerating urbanization, traditional agriculture is facing challenges such as limited land resources, uncertain climate change, and insufficient production efficiency. To address these challenges, ensure food safety, and increase crop yields, innovative agricultural models such as plant factories and indoor farming have emerged. These models rely on artificial light sources to simulate natural light conditions to support plant growth. Among the various artificial light sources, LED plant growth lights have become a research focus and technological breakthrough in this field due to their excellent energy efficiency, long lifespan, and customizable spectral output.

[0004] Current LED plant lighting technology primarily focuses on spectral matching when simulating natural light. For example, the patent "A Light-Emitting Device and Method for Regulating Plant Growth Therewith (CN201610218900.2)" aims to address the inability of existing light sources to fully simulate natural light. However, the importance of plant photosynthesis efficiency and time factors is often overlooked. Utility Model Content

[0005] The utility model aims to provide an adaptive chlorophyll light efficiency plant lighting system, which, combined with the chlorophyll absorption spectrum curve, can intelligently adjust the light according to the photosynthesis needs and time changes of the plant to optimize the efficiency and effect of plant lighting.

[0006] In order to solve the above technical problems, the utility model provides an adaptive chlorophyll light effect plant lighting system, including an LED light source, a circuit board, a power module, a control module and a current driver;

[0007] The control module sends a control instruction based on a specific spectrum, which is a spectrum of the three primary colors of red, green and blue; the current driver receives the control instruction and adjusts the current of the LED light source;

[0008] The LED light source includes a plurality of LED lamp beads distributed in an array, and the plurality of LED lamp beads are composed of an even number of blue lights, an even number of red lights and an odd number of green lights.

[0009] In a preferred embodiment, the array of the LED light sources is arranged in groups of two blue lights, two red lights, and one green light.

[0010] In a preferred embodiment, the two blue lights in a group are configured to be blue lights of two different wavelengths.

[0011] In a preferred embodiment, the two red lights in a group are configured to have two different wavelengths.

[0012] In a preferred embodiment, the wavelength range of the blue light is set to 430nm-470nm.

[0013] In a preferred embodiment, the wavelength range of the red light is set to 640nm-660nm.

[0014] In a preferred embodiment, the wavelength of the green light is set to 540 nm.

[0015] In a preferred embodiment, the specific spectrum is a combined spectrum of the three primary colors of red, green and blue based on the chlorophyll absorption spectrum factor of the natural spectrum at different time periods. The chlorophyll absorption spectrum factor (CAE) is defined as the ratio of the chlorophyll absorption radiation light effect (CLER) to the radiation light effect (LER). The chlorophyll absorption radiation light effect (CLER) is the ratio of the chlorophyll absorption light flux to the radiation flux.

[0016] Compared with the existing technology, the technical solution of the utility model has the following beneficial effects:

[0017] 1. By simulating the spectrum of natural light and combining it with the chlorophyll absorption spectrum curve, the system can intelligently adjust the light according to time changes, providing plants with a light environment that suits their growth cycle, thereby optimizing the efficiency and effectiveness of plant lighting.

[0018] 2. Using natural light spectrum data and chlorophyll absorption spectrum data, the system can be optimized based on actual data. Through the control module and current driver, the system can achieve precise spectrum control and improve the efficiency of plant photosynthesis.

[0019] 3. The system design takes into account the changes in light intensity in different seasons and daily periods, and can flexibly adapt to different environmental conditions.

[0020] 4. The system architecture allows for adding more light sources or adjusting the existing configuration in the future to accommodate a wider range of application needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 : is a diagram of the internal structure of the lighting system in this embodiment;

[0022] Figure 2 are the normalized chlorophyll absorption spectrum curve P(λ) and the photopic sensitivity curve V(λ) in this embodiment;

[0023] Figure 3 is the spectrum of the LED array in this embodiment;

[0024] Figure 4 is the chlorophyll absorption efficiency CAE of the plant lighting system and natural light at different times of the day in this embodiment.

[0025] Explanation of the accompanying drawings: 1. Power module; 2. Control module; 3. Current driving module; 4. LED array; 5. Circuit board. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] refer to Figure 1-Figure 4 This embodiment provides an adaptive chlorophyll light effect plant lighting system, which includes an LED light source, a circuit board, a power module, a control module and a current driver.

[0030] Among them, the LED light source is composed of LED lamp beads of multiple colors distributed along the array to form an LED array. The LED array includes blue light (wavelength range is set at 430nm-4700nm), green light (wavelength is set at 540nm) and red light (wavelength range is set at 640nm-660nm), which is used to generate a wide-band spectrum.

[0031] Circuit boards connect various modules and provide a physical path for electronic signal transmission.

[0032] The power module provides stable power supply for the entire system.

[0033] The control module is responsible for receiving sensor signals and user input, processing data, and controlling other modules. A specific spectral combination, based on the chlorophyll absorption spectrum factors of the natural spectrum at different times, is input into this control module. The control module then issues control commands based on this specific spectrum.

[0034] The current driver adjusts the current of the LED array according to the control instructions issued by the control module to adjust the light intensity and spectral output.

[0035] The LED lamp beads in the LED array are composed of an even number of blue lights, an even number of red lights and an odd number of green lights. Based on the matching with the absorption of light by chlorophyll, considering that the mixed use of red and blue LEDs can improve photosynthesis activity, support plant production and regulate morphological construction, and taking into account the utilization of green light by plants, this embodiment selects a group of two blue light LEDs (blue lights), one green light LED (green light) and two red light LEDs (red lights) for array distribution. Among them, the two blue lights in a group are set to two blue lights with different wavelengths, and the wavelengths of the two blue lights are set to 430nm and 470nm respectively; the two red lights in a group are set to two red lights with different wavelengths, and the wavelengths of the two red lights are set to 640nm and 660nm respectively; the wavelength of the green light is set to 540nm.

[0036] In this embodiment, the specific spectrum is a composite spectrum of the three primary colors red, green, and blue based on the chlorophyll absorption spectrum factor at different time periods of the natural spectrum. The chlorophyll absorption spectrum factor (CAE) is defined as the ratio of the chlorophyll absorption radiation efficiency (CLER) to the radiation efficiency (LER). The chlorophyll absorption radiation efficiency (CLER) is the ratio of the chlorophyll absorption flux to the radiation flux. The specific spectrum measurement is as follows:

[0037] Measurement of natural light spectrum

[0038] To obtain natural light spectrum data, this example selects clear, light-free days throughout the year and measures the natural light spectrum every hour from 8:00 AM to 5:00 PM. The spectral data for these selected days is then averaged to determine representative natural light spectra for spring, summer, autumn, and winter.

[0039] Evaluation of chlorophyll absorption spectrum efficiency

[0040] In this example, lettuce was selected as the experimental sample to obtain its chlorophyll absorption spectrum. The experimental steps included:

[0041] Chlorophyll extraction: Mix chopped lettuce leaves with the extract (ethanol), grind them in a mortar to dissolve the chlorophyll in the extract.

[0042] Spectral measurement: A spectrometer is used to perform spectral absorption testing on the chlorophyll extract. Chlorophyll's main absorption peaks are located in the blue-violet region (approximately 430nm) and the red region (approximately 662nm). The absorption values ​​at these two wavelengths are used to estimate the content of chlorophyll a and chlorophyll b.

[0043] Data processing: Draw the spectral absorption curve of chlorophyll based on the absorption spectrum data, such as Figure 2 The chlorophyll absorption spectrum curve P(λ) of lettuce is shown.

[0044] Similar to the light efficiency of radiation (LER), this embodiment defines the chlorophyll absorption light efficiency (CLER) as the ratio of the chlorophyll-absorbed light flux to the radiant flux. The chlorophyll absorption spectral factor (CAE) is defined as the ratio of the CLER to the LER, reflecting the concentration of light energy in the chlorophyll-sensitive spectral region. The calculation formula is as follows, where S(λ) is the light source spectrum:

[0045]

[0046]

[0047] For the specific spectrum, see Figure 3 The correlated color temperature (CCT), color rendering index (CRI), and chlorophyll absorption spectral factor (CAE) were selected as optimization targets to achieve excellent visual and photosynthesis performance. The CAE is calculated from the natural spectrum measured above at different times of the day.

[0048] The above is only a preferred specific implementation method of the present invention, but the design concept of the present invention is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the present invention within the technical scope disclosed by the present invention shall be deemed to infringe the protection scope of the present invention.

Claims

1. An adaptive chlorophyll light effect plant lighting system, characterized by: Including LED light source, circuit board, power module, control module and current driver; The control module sends a control instruction based on a specific spectrum, which is a spectrum of the three primary colors of red, green and blue; the current driver receives the control instruction and adjusts the current of the LED light source; The LED light source includes a plurality of LED lamp beads distributed in an array, and the plurality of LED lamp beads are composed of an even number of blue lights, an even number of red lights and an odd number of green lights.

2. The adaptive chlorophyll light effect plant lighting system according to claim 1, characterized in that: The LED light source array is arranged in a group of two blue lights, two red lights and one green light.

3. The adaptive chlorophyll light effect plant lighting system according to claim 2, characterized in that: The two blue lights in one group are configured as blue lights of two different wavelengths.

4. The adaptive chlorophyll light effect plant lighting system according to claim 3, characterized in that: The two red lights in one group are configured to have two red lights with different wavelengths.

5. The adaptive chlorophyll light effect plant lighting system according to claim 4, characterized in that: The wavelength range of the blue light is set at 430nm-470nm.

6. The adaptive chlorophyll light effect plant lighting system according to claim 5, characterized in that: The wavelength range of the red light is set at 640nm-660nm.

7. The adaptive chlorophyll light effect plant lighting system according to claim 2, characterized in that: The wavelength of the green light is set to 540 nm.

8. The adaptive chlorophyll light effect plant lighting system according to claim 1, characterized in that: The specific spectrum is a combined spectrum of the three primary colors of red, green and blue based on the chlorophyll absorption spectrum factor at different time periods of the natural spectrum. The chlorophyll absorption spectrum factor (CAE) is defined as the ratio of the chlorophyll absorption radiation light effect (CLER) to the radiation light effect (LER). The chlorophyll absorption radiation light effect (CLER) is the ratio of the chlorophyll absorption light flux to the radiation flux.

Images