A full-spectrum LED plant lighting system with adjustable light quality, light intensity and uniform illumination

Abstract

The present application relates to the technical field of intelligent breeding acceleration equipment, and particularly relates to a full-spectrum LED plant lighting system with adjustable light quality and intensity and uniform illumination, which comprises an LED light source module, a control unit, a driving unit and a power module; the LED light source module comprises LED lamp beads and a PCB aluminum substrate, the PCB aluminum substrate is provided with pads in a matrix for the LED lamp beads, the LED lamp beads comprise monochrome lamp beads and white light lamp beads arranged on the pads of the PCB aluminum substrate; the control unit comprises an addresser and control chips, the addresser inputs dimming parameters to the corresponding control chips, the control chips generate control signals after decoding the dimming parameters and input the control signals to the corresponding driving units; the driving unit controls the brightness of the LED lamp beads in the LED light source module; and the power module supplies power to the LED light source module, the control unit and the driving unit. The full-spectrum LED plant lighting system optimizes the arrangement mode of the monochrome lamp beads, so that the illumination is more uniform, and the adaptability of light quality and intensity can be realized.

Description

Technical Field

[0001] This invention relates to the field of intelligent breeding acceleration equipment technology, and in particular to a full-spectrum LED plant lighting system with adjustable light quality and intensity and uniform illuminance. Background Technology

[0002] Light is the energy source for photosynthesis in plants and influences various aspects of plant growth, development, morphogenesis, and metabolism. Among these, light quality, light intensity, and photoperiod are the three main factors affecting plant growth and development. LED light sources, with their advantages of energy efficiency, adjustable spectrum, long lifespan, and compact design, have become widely used as a primary artificial light source in plant lighting. Plant photoculture can create the optimal light environment for plant growth by adjusting the three key elements of LED light sources, thereby shortening the plant growth cycle or increasing plant yield.

[0003] Different plants have varying requirements for light quality, intensity, and photoperiod at different growth stages, making it crucial to establish a dynamically adjustable light environment. Currently, most existing LED plant lighting fixtures use a fixed spectrum, meaning the brightness of the LED chips remains constant and the overall spectrum is uniform, or they employ stepless adjustment via knobs to adjust the overall brightness. This fails to meet the precise needs for varying light quality and intensity throughout the entire growth cycle, easily leading to energy waste or disrupting the plant's light-gathering patterns. Furthermore, in existing LED plant lighting fixtures, monochromatic LED chips are often uniformly arranged, resulting in limited uniformity of monochromatic light. Figure 3 As shown.

[0004] In summary, given the different light quality and intensity requirements of different plants at different growth stages, and the limited monochromatic light uniformity of existing LED plant lighting fixtures, there is an urgent need to develop a full-spectrum LED plant lighting system with adjustable light quality and intensity and uniform illuminance. Summary of the Invention

[0005] The purpose of this invention is to provide a full-spectrum LED plant lighting system with adjustable light quality and intensity and uniform illuminance, addressing the limitations of existing technologies. This full-spectrum LED plant lighting system optimizes the arrangement of monochrome LED beads to achieve more uniform illuminance and enables adaptive adjustment of light quality and intensity.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A full-spectrum LED plant lighting system with adjustable light quality and intensity and uniform illuminance includes an LED light source module, a control unit, a drive unit, and a power supply module.

[0008] The LED light source module includes LED chips and a PCB aluminum substrate. The PCB aluminum substrate has 840 pads arranged in a matrix of 6 rows for the LED chips. The LED chips include monochromatic chips with center wavelengths of 395nm, 450nm, 660nm, and 730nm, and white chips with a color temperature of 3000K. The monochromatic and white chips are arranged one by one on the pads on the PCB aluminum substrate.

[0009] In the first, third, and fifth rows of pads on the PCB aluminum substrate, the monochrome LEDs with a center wavelength of 395nm are arranged in six groups according to the quantity arrangement rule "3, 2, 2, 2, 2, 3" and are evenly distributed. In each row, the starting position of the monochrome LED with a center wavelength of 395nm is the second pad. In any group, there are four pads between adjacent monochrome LEDs.

[0010] In the 2nd and 5th rows of pads on the PCB aluminum substrate, the monochrome LEDs with a center wavelength of 450nm are arranged in 6 groups according to the quantity arrangement rule "3, 2, 2, 2, 2, 3" and are evenly arranged. In each row, the starting position of the monochrome LED with a center wavelength of 450nm is the first pad. In any group, there are 4 pads between adjacent monochrome LEDs.

[0011] In rows 1, 3, 4, and 6 of the pads on the PCB aluminum substrate, the monochrome LEDs with a center wavelength of 660nm are arranged in 6 groups according to the quantity arrangement rule "3, 2, 2, 2, 2, 3" and are evenly distributed. In each row, the starting position of the monochrome LED with a center wavelength of 660nm is the 4th pad. In any group, there are 4 pads between adjacent monochrome LEDs.

[0012] In the 2nd, 4th and 6th rows of pads on the PCB aluminum substrate, the monochrome LEDs with a center wavelength of 730nm are arranged in 6 groups according to the quantity arrangement rule "3, 2, 2, 2, 2, 3" and are evenly arranged. In each row, the starting position of the monochrome LED with a center wavelength of 730nm is the 3rd pad. In any group, there are 4 pads between adjacent monochrome LEDs.

[0013] In each row of pads on the PCB aluminum substrate, white LEDs are arranged to fill the pads where single-color LEDs are not arranged.

[0014] The control unit includes an addresser and a control chip. The addresser encodes and generates an RS485 differential signal, which is then input to the corresponding control chip as dimming parameters. The control chip decodes the dimming parameters and outputs a PWM pulse width modulation signal, which is then input to the corresponding drive unit.

[0015] The driving unit is a driving chip, which controls the brightness of the LED beads in the LED light source module;

[0016] The power supply module provides power to the LED light source module, control unit, and drive unit.

[0017] Furthermore, the housing profile is also included, with the power module, control unit, drive unit, and LED light source module all housed within the housing profile.

[0018] Furthermore, the outer casing profile is a finned aluminum heat dissipation profile.

[0019] Furthermore, the drive unit and control unit are fully encapsulated in a wire groove box within the housing profile using epoxy resin potting material.

[0020] Furthermore, all of the LED beads are SMD beads.

[0021] Furthermore, both the PCB aluminum substrate and the LED beads are coated with conformal coating.

[0022] Furthermore, the addresser is a DMX handheld addresser.

[0023] Furthermore, the power module is equipped with dustproof and waterproof components, with a protection rating of IP67.

[0024] The beneficial effects of this invention are as follows:

[0025] 1. After optimizing the arrangement of the monochromatic LED beads, the monochromatic light uniformity is 88% at a distance of 20cm from the light receiving surface and a receiving surface size of 900cm×250cm, which is about 6% higher than the common uniform arrangement method on the market;

[0026] 2. Based on the different light environment requirements of plants at different growth stages, the target light quality and light intensity can be precisely controlled by inputting dimming parameters through the addresser, thereby ensuring that plants grow in the best light environment;

[0027] 3. Full-spectrum LED plant lighting fixtures with adjustable light quality and intensity can meet the different light environment needs of different plants throughout their growth period, saving the manpower and material costs of purchasing multiple spectrum lamps or frequently replacing lamps.

[0028] 4. The wavelength range of LED beads covers all the wavelengths required for plant growth and development, which can be applied to the needs of different plants at different growth stages or to study the effects of different spectra on plant growth and development. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the control logic of a full-spectrum LED plant lighting system with adjustable light quality, light intensity, and uniform illuminance according to the present invention.

[0030] Figure 2This is a diagram showing the arrangement of LED beads in a full-spectrum LED plant lighting system with adjustable light quality, light intensity, and uniform illuminance according to the present invention.

[0031] Figure 3 This is one of the common LED plant lighting fixtures on the market, showing the arrangement of LED beads.

[0032] Figure 4 This is a relative radiation spectrum of the LED beads used in the full-spectrum LED plant lighting system of the present invention, which has adjustable light quality, light intensity, and uniform illuminance.

[0033] Figure 5 The image shows the relative radiative spectra of two spectra generated by the full-spectrum LED plant lighting system of the present invention, which has adjustable light quality, light intensity, and uniform illuminance. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific examples described herein are merely illustrative and not intended to limit the scope of the invention.

[0035] Please see Figures 1-2 As shown, a full-spectrum LED plant lighting system with adjustable light quality and intensity and uniform illuminance includes an LED light source module, a control unit, a drive unit, and a power supply module.

[0036] The LED light source module includes LED chips and a PCB aluminum substrate. The PCB aluminum substrate has 840 pads arranged in a matrix for the LED chips, with 6 rows. The LED chips include monochrome chips with center wavelengths of 395nm, 450nm, 660nm, and 730nm, as well as white chips with a color temperature of 3000K. The monochrome chips and white chips are arranged one by one on the pads on the PCB aluminum substrate.

[0037] Preferably, all LED beads are SMD beads (LED beads manufactured using surface mount technology SMT), and both the PCB aluminum substrate and the LED beads are coated with conformal coating (dustproof, waterproof, and corrosion-resistant), with a thickness of 30-50μm.

[0038] Please see Figure 2 As shown, the arrangement of monochrome LEDs and white LEDs on the PCB aluminum substrate is as follows:

[0039] In the first, third, and fifth rows of pads on the PCB aluminum substrate, the monochrome LEDs with a center wavelength of 395nm are arranged in six groups according to the quantity arrangement rule "3, 2, 2, 2, 2, 3" and are evenly distributed. In each row, the starting position of the monochrome LED with a center wavelength of 395nm is the second pad. In any group, there are four pads between adjacent monochrome LEDs.

[0040] In the 2nd and 5th rows of pads on the PCB aluminum substrate, the monochrome LEDs with a center wavelength of 450nm are arranged in 6 groups according to the quantity arrangement rule "3, 2, 2, 2, 2, 3" and are evenly arranged. In each row, the starting position of the monochrome LED with a center wavelength of 450nm is the first pad. In any group, there are 4 pads between adjacent monochrome LEDs.

[0041] In rows 1, 3, 4, and 6 of the pads on the PCB aluminum substrate, the monochrome LEDs with a center wavelength of 660nm are arranged in 6 groups according to the quantity arrangement rule "3, 2, 2, 2, 2, 3" and are evenly distributed. In each row, the starting position of the monochrome LED with a center wavelength of 660nm is the 4th pad. In any group, there are 4 pads between adjacent monochrome LEDs.

[0042] In the 2nd, 4th and 6th rows of pads on the PCB aluminum substrate, the monochrome LEDs with a center wavelength of 730nm are arranged in 6 groups according to the quantity arrangement rule "3, 2, 2, 2, 2, 3" and are evenly arranged. In each row, the starting position of the monochrome LED with a center wavelength of 730nm is the 3rd pad. In any group, there are 4 pads between adjacent monochrome LEDs.

[0043] In each row of pads on the PCB aluminum substrate, white LEDs are arranged to fill the pads where single-color LEDs are not arranged.

[0044] According to the above design, the number of monochrome LEDs with center wavelengths of 395nm, 450nm, 660nm, and 730nm, and the number of white LEDs with a color temperature of 3000K, are 42, 28, 56, 42, and 672, respectively, for a total of 840.

[0045] The control unit includes an addresser and a control chip. The addresser inputs dimming parameters to the corresponding control chip, which decodes the dimming parameters and generates a control signal, which is then input to the corresponding drive unit. Specifically, the addresser encodes the signal to generate an RS485 differential signal and transmits it to the corresponding control chip. The control chip decodes the signal and outputs a PWM pulse width modulation signal to the corresponding drive unit.

[0046] It uses the RS485 differential signal protocol to transmit control signal data, supports parallel connection of lamps, and is safe, reliable, has strong anti-interference ability, and a long transmission distance.

[0047] For example, in this embodiment, the addresser is a DMX handheld addresser.

[0048] The driving unit is a driver chip, which controls the brightness of the LED beads in the LED light source module. Specifically, the driver chip controls the brightness of the corresponding LED bead by adjusting the on / off cycle and duration of the current.

[0049] The power module supplies power to the LED light source module, control unit, and drive unit. Preferably, the power module is equipped with dustproof and waterproof components, with a protection rating of IP67.

[0050] For example, in this embodiment, the power supply module converts 220V AC power into 48V low-voltage DC power to power the LED light source module, control unit and drive unit.

[0051] The above technical solution also includes a housing profile, in which the power module, control unit, drive unit and LED light source module are all housed.

[0052] For example, in this embodiment, the housing profile is a finned aluminum heat dissipation profile. The housing profile dissipates the heat generated by the power module, control unit, drive unit and LED light source module during operation, ensuring that each module and unit operates at normal temperature. The drive unit and control unit are fully encapsulated in a wire trough box inside the housing profile using epoxy resin potting material. The wire trough box has dimensions of 20cm*5cm*4cm.

[0053] More specifically, the relative radiation spectrum of the LED chips used in this full-spectrum LED plant lighting system is as follows: Figure 4 The relative radiative spectra of the two spectra generated by this full-spectrum LED plant lighting system are shown in the figure below. Figure 5 .

[0054] In summary, the advantages of this invention are as follows:

[0055] 1. After optimizing the arrangement of the monochromatic LED beads, the monochromatic light uniformity is 88% at a distance of 20cm from the light receiving surface and a receiving surface size of 900cm×250cm, which is about 6% higher than the common uniform arrangement method on the market;

[0056] 2. Based on the different light environment requirements of plants at different growth stages, the target light quality and light intensity can be precisely controlled by inputting dimming parameters through the addresser, thereby ensuring that plants grow in the best light environment;

[0057] 3. Full-spectrum LED plant lighting fixtures with adjustable light quality and intensity can meet the different light environment needs of different plants throughout their growth period, saving the manpower and material costs of purchasing multiple spectrum lamps or frequently replacing lamps.

[0058] 4. The wavelength range of LED beads covers all the wavelengths required for plant growth and development, which can be applied to the needs of different plants at different growth stages or to study the effects of different spectra on plant growth and development.

[0059] In addition, it should be noted that this full-spectrum LED plant lighting system is a key research and development project of Hubei Province. Project information is as follows:

[0060] Project Name: Research and Development of Intelligent Accelerated Plant Breeding Equipment;

[0061] Category: Agriculture and Rural Affairs;

[0062] Project number: 2022BBA0074.

[0063] This invention is not limited to the specific embodiments described above. Those skilled in the art can implement this invention using various other specific embodiments based on the content disclosed herein. Therefore, any design that adopts the design structure and concept of this invention and makes some simple changes or modifications falls within the scope of protection of this invention.

Claims

1. A full spectrum LED plant lighting system with adjustable light quality, light intensity and uniformity of illumination, characterized in that: The LED light source module and a control unit, a driving unit and a power module are included. The LED light source module includes LED lamp beads and a PCB aluminum substrate, the PCB aluminum substrate is provided with pads in a matrix, the number of the pads is 840, the number of rows is 6, the LED lamp beads include single-color lamp beads with central wavelengths of 395 nm, 450 nm, 660 nm and 730 nm and white light lamp beads with a color temperature of 3000 K, the single-color lamp beads and the white light lamp beads are arranged one by one on the pads provided on the PCB aluminum substrate, and wherein: In the 1st, 3rd and 5th rows of the pads provided on the PCB aluminum substrate, the single-color lamp beads with the central wavelength of 395 nm are divided into six groups according to the number arrangement rule "3, 2, 2, 2, 2, 3" and are uniformly arranged, and in each row, the starting position of the single-color lamp beads with the central wavelength of 395 nm is the 2nd pad, and in any group, the adjacent two single-color lamp beads are spaced apart by four pads; In the 2nd and 5th rows of the pads provided on the PCB aluminum substrate, the single-color lamp beads with the central wavelength of 450 nm are divided into six groups according to the number arrangement rule "3, 2, 2, 2, 2, 3" and are uniformly arranged, and in each row, the starting position of the single-color lamp beads with the central wavelength of 450 nm is the 1st pad, and in any group, the adjacent two single-color lamp beads are spaced apart by four pads; In the 1st, 3rd, 4th and 6th rows of the pads provided on the PCB aluminum substrate, the single-color lamp beads with the central wavelength of 660 nm are divided into six groups according to the number arrangement rule "3, 2, 2, 2, 2, 3" and are uniformly arranged, and in each row, the starting position of the single-color lamp beads with the central wavelength of 660 nm is the 4th pad, and in any group, the adjacent two single-color lamp beads are spaced apart by four pads; In the 2nd, 4th and 6th rows of the pads provided on the PCB aluminum substrate, the single-color lamp beads with the central wavelength of 730 nm are divided into six groups according to the number arrangement rule "3, 2, 2, 2, 2, 3" and are uniformly arranged, and in each row, the starting position of the single-color lamp beads with the central wavelength of 730 nm is the 3rd pad, and in any group, the adjacent two single-color lamp beads are spaced apart by four pads; In each row of the pads provided on the PCB aluminum substrate, the white light lamp beads are arranged in the pads not arranged with the single-color lamp beads; The control unit includes an addresser and a control chip, the addresser generates an RS485 differential signal after coding, inputs a dimming parameter to a corresponding control chip, the control chip outputs a PWM pulse width modulation signal after decoding the dimming parameter and inputs the PWM pulse width modulation signal to a corresponding driving unit; The driving unit is a driving chip, which controls the brightness of the LED lamp beads in the LED light source module. The power module supplies power to the LED light source module, the control unit and the driving unit.

2. The full spectrum LED plant lighting system with adjustable light quality, light intensity and uniform illuminance according to claim 1, characterized in that: Further included is a housing profile, the power module, the control unit, the driving unit and the LED light source module are arranged in the housing profile.

3. The full spectrum LED plant lighting system with adjustable light quality, light intensity and uniform illuminance according to claim 2, characterized in that: The housing profile is a fin-shaped aluminum heat dissipation profile.

4. The full spectrum LED plant lighting system with adjustable light quality, light intensity and uniform illuminance of claim 2, wherein: The driving unit and the control unit are fully encapsulated in a wire slot box in the housing profile by using an epoxy resin glue filling material.

5. The full spectrum LED plant lighting system with adjustable light quality, light intensity and uniform illuminance of claim 1, wherein: The LED lamp beads are all SMD lamp beads.

6. The full spectrum LED plant lighting system with adjustable light quality, light intensity and uniform illuminance according to claim 1 or 5, characterized in that: The PCB aluminum substrate and the LED lamp beads are both sprayed with three-proof paint.

7. The full spectrum LED plant lighting system with adjustable light quality, light intensity and uniform illuminance of claim 1, wherein: The addresser is a DMX handheld addresser.

8. The full spectrum LED plant lighting system with adjustable light quality, light intensity and uniform illuminance of claim 1, wherein: The power module is provided with a dustproof and waterproof assembly, and the protection level is IP67.

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