Full-spectrum LED plant illumination system with adjustable light quality and light intensity and uniform illumination

Abstract

The invention relates to the technical field of intelligent breeding acceleration equipment, in particular to a full-spectrum LED plant lighting system with adjustable light quality and light intensity and uniform illumination, which comprises an LED light source module, a control unit, a driving unit and a power supply module, the LED light source module comprises LED lamp beads and a PCB aluminum substrate, bonding pads of the LED lamp beads are arranged on the PCB aluminum substrate in a matrix mode, and the LED lamp beads comprise single-color lamp beads and white-light lamp beads which are arranged on the bonding pads arranged on the PCB aluminum substrate. The control unit comprises an addressing device and a control chip, the addressing device inputs dimming parameters to the corresponding control chip, the control chip decodes the dimming parameters to generate a control signal, and the control signal is input to the corresponding driving unit; the driving unit controls the brightness of LED lamp beads in the LED light source module; and the power supply module supplies power to the LED light source module, the control unit and the driving unit. According to the full-spectrum LED plant lighting system, by optimizing the arrangement mode of the single-color lamp beads, the illumination is more uniform, and adaptive adjustment of light quality and light intensity can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent breeding acceleration equipment, and in particular to a full-spectrum LED plant lighting system with adjustable light quality and light intensity and uniform illumination. Background Art

[0002] Light is the energy source for plants to carry out photosynthesis, and it also affects all aspects of plant growth, development, morphological construction, and material metabolism. Among them, the "three elements" of light quality, light intensity, and photoperiod are the main factors affecting plant growth and development. LED light sources have the advantages of energy saving and high efficiency, adjustable spectrum, long life, and compactness and flexibility. They have been widely used in the field of plant lighting as the main artificial light source. Plant light cultivation can form the optimal light environment required for plant growth by adjusting the "three elements" of LED light sources, so as to shorten the plant growth cycle or increase plant yield.

[0003] Different plants have different requirements for light quality, light intensity and light cycle at different growth stages, so it is very important to establish a light environment that can be adjusted dynamically. At present, most of the existing LED plant lighting fixtures have a fixed spectrum, that is, the brightness of the LED lamp beads does not change, the lamp spectrum is constant, or the overall brightness of the lamp is infinitely adjusted by a knob, which cannot meet the precise requirements of different light qualities and light intensities throughout the growth cycle. Such lamps are very likely to cause energy waste or disrupt the lighting pattern of plants. In addition, in existing LED plant lighting fixtures, the monochromatic lamp beads are often evenly arranged, and the uniformity of monochromatic light is limited. Figure 3 shown.

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

[0005] The purpose of the present invention is to provide a full-spectrum LED plant lighting system with adjustable light quality, light intensity and uniform illumination in response to the existing technical status. The full-spectrum LED plant lighting system optimizes the arrangement of monochromatic lamp beads to make its illumination more uniform and can achieve adaptive adjustment of light quality and light intensity.

[0006] In order to achieve the above object, the present invention adopts the following technical scheme: A full-spectrum LED plant lighting system with adjustable light quality and light intensity and uniform illumination, comprising an LED light source module, a control unit, a drive unit and a power module; The LED light source module includes LED lamp beads and a PCB aluminum substrate. The PCB aluminum substrate is provided with solder pads of LED lamp beads in a matrix, the number of solder pads is 840, the number of rows is 6, the LED lamp beads include monochromatic lamp beads with central wavelengths of 395nm, 450nm, 660nm, and 730nm, and white light lamp beads with a color temperature of 3000K. The monochromatic lamp beads and the white light lamp beads are arranged one by one on the solder pads provided on the PCB aluminum substrate, wherein: In the 1st, 3rd and 5th rows of the pads on the PCB aluminum substrate, the monochromatic lamp beads with a central wavelength of 395nm are divided into 6 groups according to the quantity arrangement rule of "3, 2, 2, 2, 2, 3" and are evenly arranged. In each row, the starting position of the monochromatic lamp beads with a central wavelength of 395nm is the second pad. In any group, there are 4 pads between two adjacent monochromatic lamp beads. In the 2nd and 5th rows of the pads on the PCB aluminum substrate, the monochromatic lamp beads with a central wavelength of 450nm are divided into 6 groups according to the quantity arrangement rule of "3, 2, 2, 2, 2, 3" and are evenly arranged. In each row, the starting position of the monochromatic lamp beads with a central wavelength of 450nm is the first pad. In any group, there are 4 pads between two adjacent monochromatic lamp beads. In the 1st, 3rd, 4th and 6th rows of the pads on the PCB aluminum substrate, the monochromatic lamp beads with a central wavelength of 660nm are divided into 6 groups according to the quantity arrangement rule of "3, 2, 2, 2, 2, 3" and are evenly arranged. In each row, the starting position of the monochromatic lamp beads with a central wavelength of 660nm is the 4th pad. In any group, there are 4 pads between two adjacent monochromatic lamp beads. In the 2nd, 4th and 6th rows of the pads on the PCB aluminum substrate, the monochromatic lamp beads with a central wavelength of 730nm are divided into 6 groups according to the quantity arrangement rule of "3, 2, 2, 2, 2, 3" and are evenly arranged. In each row, the starting position of the monochromatic lamp beads with a central wavelength of 730nm is the 3rd pad. In any group, there are 4 pads between two adjacent monochromatic lamp beads. In each row of pads on the PCB aluminum substrate, white light beads are filled and arranged on the pads where the monochrome light beads are not arranged; The control unit includes an addresser and a control chip. The addresser generates an RS485 differential signal after encoding, inputs the dimming parameters to the corresponding control chip, and the control chip decodes the dimming parameters and outputs a PWM pulse width modulation signal, which is input to the corresponding drive unit; The driving unit is a driving chip, and the driving chip controls the brightness of the LED lamp beads in the LED light source module; The power supply module supplies power to the LED light source module, the control unit and the driving unit.

[0007] Furthermore, it also includes a shell profile, in which the power module, the control unit, the drive unit and the LED light source module are all arranged.

[0008] Furthermore, the shell profile is a fin-shaped aluminum heat dissipation profile.

[0009] Furthermore, the driving unit and the control unit are fully encapsulated in a wire trough box in the shell profile using epoxy resin glue potting material.

[0010] Furthermore, the LED lamp beads are all SMD lamp beads.

[0011] Furthermore, the PCB aluminum substrate and the LED lamp beads are sprayed with three-proof paint.

[0012] Furthermore, the addressing device is a DMX handheld addressing device.

[0013] Furthermore, the power module is provided with a dustproof and waterproof component with a protection grade of IP67.

[0014] The beneficial effects of the present invention are: 1. After optimizing the arrangement of monochromatic lamp beads, the uniformity of monochromatic light is 88% when the distance to the light receiving surface is 20cm and the receiving surface is 900cm×250cm, which is about 6% higher than the common uniform arrangement on the market; 2. According to the different requirements of plants for light environment at different growth stages, the target light quality and light intensity can be precisely controlled by inputting dimming parameters through the addresser, thus ensuring that plants grow in the best light environment; 3. Full-spectrum LED plant lighting fixtures with adjustable light quality and light intensity can meet the different needs of different plants for light environment throughout the growth period, saving the manpower and material costs of purchasing multiple spectrum lamps or frequently replacing lamps; 4. The wavelength range of LED lamp beads covers all 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a control logic schematic diagram of a full-spectrum LED plant lighting system with adjustable light quality and light intensity and uniform illumination according to the present invention; Figure 2 This is a lamp bead arrangement diagram of a full-spectrum LED plant lighting system with adjustable light quality and light intensity and uniform illumination according to the present invention; Figure 3 This is one of the common LED plant lighting lamp arrangement diagrams on the market; Figure 4 A relative radiation spectrum diagram of an LED lamp bead used in a full-spectrum LED plant lighting system with adjustable light quality and light intensity and uniform illumination according to the present invention; Figure 5This is a relative radiation spectrum diagram of two spectra generated by a full-spectrum LED plant lighting system with adjustable light quality, light intensity and uniform illumination according to the present invention. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and implementation examples. It should be understood that the specific examples described herein are only used to explain the present invention and are not used to limit the present invention.

[0017] See also Figure 1~2 As shown, a full-spectrum LED plant lighting system with adjustable light quality, light intensity and uniform illumination includes an LED light source module, a control unit, a drive unit and a power module.

[0018] The LED light source module includes LED lamp beads and a PCB aluminum substrate. The PCB aluminum substrate is provided with solder pads for LED lamp beads in a matrix. The number of solder pads is 840 and the number of rows is 6. The LED lamp beads include monochrome lamp beads with central wavelengths of 395nm, 450nm, 660nm, and 730nm, respectively, and white light lamp beads with a color temperature of 3000K. The monochrome lamp beads and the white light lamp beads are arranged one by one on the solder pads provided on the PCB aluminum substrate.

[0019] Preferably, the LED lamp beads are all SMD lamp beads (LED lamp beads manufactured using surface mount technology SMT), and the PCB aluminum substrate and the LED lamp beads are sprayed with three-proof paint (dust-proof, waterproof, and anti-corrosion) with a thickness of 30-50μm.

[0020] See also Figure 2 As shown in the figure, the arrangement of monochrome lamp beads and white light lamp beads on the PCB aluminum substrate is as follows: In the 1st, 3rd and 5th rows of the pads on the PCB aluminum substrate, the monochromatic lamp beads with a central wavelength of 395nm are divided into 6 groups according to the quantity arrangement rule of "3, 2, 2, 2, 2, 3" and are evenly arranged. In each row, the starting position of the monochromatic lamp beads with a central wavelength of 395nm is the second pad. In any group, there are 4 pads between two adjacent monochromatic lamp beads. In the 2nd and 5th rows of the pads on the PCB aluminum substrate, the monochromatic lamp beads with a central wavelength of 450nm are divided into 6 groups according to the quantity arrangement rule of "3, 2, 2, 2, 2, 3" and are evenly arranged. In each row, the starting position of the monochromatic lamp beads with a central wavelength of 450nm is the first pad. In any group, there are 4 pads between two adjacent monochromatic lamp beads. In the 1st, 3rd, 4th and 6th rows of the pads on the PCB aluminum substrate, the monochromatic lamp beads with a central wavelength of 660nm are divided into 6 groups according to the quantity arrangement rule of "3, 2, 2, 2, 2, 3" and are evenly arranged. In each row, the starting position of the monochromatic lamp beads with a central wavelength of 660nm is the 4th pad. In any group, there are 4 pads between two adjacent monochromatic lamp beads. In the 2nd, 4th and 6th rows of the pads on the PCB aluminum substrate, the monochromatic lamp beads with a central wavelength of 730nm are divided into 6 groups according to the quantity arrangement rule of "3, 2, 2, 2, 2, 3" and are evenly arranged. In each row, the starting position of the monochromatic lamp beads with a central wavelength of 730nm is the 3rd pad. In any group, there are 4 pads between two adjacent monochromatic lamp beads. In each row of pads on the PCB aluminum substrate, white light lamp beads are filled and arranged on the pads where the monochrome lamp beads are not arranged.

[0021] According to the above design, the numbers of monochrome lamp beads with central wavelengths of 395nm, 450nm, 660nm, and 730nm and white light lamp beads with a color temperature of 3000K are 42, 28, 56, 42, and 672 respectively, with a total of 840.

[0022] The control unit includes an addresser and a control chip. The addresser inputs dimming parameters to the corresponding control chip. The control chip decodes the dimming parameters to generate a control signal and inputs it to the corresponding drive unit. Specifically, the addresser generates an RS485 differential signal after encoding and transmits it to the corresponding control chip. The control chip decodes and outputs a PWM pulse width modulation signal to the corresponding drive unit.

[0023] Among them, the RS485 differential signal protocol is used to transmit control signal data, which supports parallel connection of lamps. It is safe and reliable, has strong anti-interference ability and a long transmission distance.

[0024] Exemplarily, in this embodiment, the addresser is a DMX handheld addresser.

[0025] The driving unit is a driving chip, which controls the brightness of the LED lamp beads in the LED light source module. Specifically, the driving chip controls the brightness of the LED lamp beads by adjusting the current on and off cycle and duration of the corresponding LED lamp beads. The power module supplies power to the LED light source module, the control unit and the drive unit. Preferably, the power module is provided with a dustproof and waterproof component, and the protection level is IP67.

[0026] Illustratively, in this embodiment, the power module converts 220V AC power into 48V low-voltage DC power to power the LED light source module, the control unit, and the drive unit.

[0027] The above technical solution also includes a shell profile, and the power module, the control unit, the drive unit and the LED light source module are all arranged in the shell profile.

[0028] Exemplarily, in this embodiment, the shell profile is a fin-type aluminum heat dissipation profile, which 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 a normal temperature; the drive unit and the control unit are fully encapsulated in a wire trough box inside the shell profile using epoxy resin glue potting material, and the size of the wire trough box is 20cm*5cm*4cm.

[0029] More specifically, the relative radiation spectrum of the LED lamp beads used in the full-spectrum LED plant lighting system is as follows: Figure 4 The relative radiation spectrum of the two spectra generated by the full-spectrum LED plant lighting system is shown in Figure 5 .

[0030] In general, the advantages of the present invention are as follows: 1. After optimizing the arrangement of monochromatic lamp beads, the uniformity of monochromatic light is 88% when the distance to the light receiving surface is 20cm and the receiving surface is 900cm×250cm, which is about 6% higher than the common uniform arrangement on the market; 2. According to the different requirements of plants for light environment at different growth stages, the target light quality and light intensity can be precisely controlled by inputting dimming parameters through the addresser, thus ensuring that plants grow in the best light environment; 3. Full-spectrum LED plant lighting fixtures with adjustable light quality and light intensity can meet the different needs of different plants for light environment throughout the growth period, saving the manpower and material costs of purchasing multiple spectrum lamps or frequently replacing lamps; 4. The wavelength range of LED lamp beads covers all 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.

[0031] In addition, it should be noted that the full-spectrum LED plant lighting system is a key R&D project of Hubei Province. The project information is as follows: Project name: Research and development of plant intelligent accelerated breeding equipment; Category: Agriculture and rural areas; Project number: 2022BBA0074.

[0032] The present invention is not limited to the above-mentioned specific implementation modes. A person skilled in the art can implement the present invention in various other specific implementation modes based on the contents disclosed in the present invention. Therefore, any design that adopts the design structure and concept of the present invention and makes some simple changes or modifications shall fall within the scope of protection of the present invention.

Claims

1. A full-spectrum LED plant lighting system with adjustable light quality and light intensity and uniform illumination, characterized by: It includes an LED light source module, a control unit, a drive unit and a power supply module; The LED light source module includes LED lamp beads and a PCB aluminum substrate. The PCB aluminum substrate is provided with solder pads of LED lamp beads in a matrix, the number of solder pads is 840, the number of rows is 6, the LED lamp beads include monochromatic lamp beads with central wavelengths of 395nm, 450nm, 660nm, and 730nm, and white light lamp beads with a color temperature of 3000K. The monochromatic lamp beads and the white light lamp beads are arranged one by one on the solder pads provided on the PCB aluminum substrate, wherein: In the 1st, 3rd and 5th rows of the pads on the PCB aluminum substrate, the monochromatic lamp beads with a central wavelength of 395nm are divided into 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 monochromatic lamp beads with a central wavelength of 395nm is the second pad. In any group, there are 4 pads between two adjacent monochromatic lamp beads. In the 2nd and 5th rows of the pads on the PCB aluminum substrate, the monochromatic lamp beads with a central wavelength of 450nm are divided into 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 monochromatic lamp beads with a central wavelength of 450nm is the first pad. In any group, there are 4 pads between two adjacent monochromatic lamp beads. In the 1st, 3rd, 4th and 6th rows of the pads on the PCB aluminum substrate, the monochromatic lamp beads with a central wavelength of 660nm are divided into 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 monochromatic lamp beads with a central wavelength of 660nm is the 4th pad. In any group, there are 4 pads between two adjacent monochromatic lamp beads. In the 2nd, 4th and 6th rows of the pads on the PCB aluminum substrate, the monochromatic lamp beads with a central wavelength of 730nm are divided into 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 monochromatic lamp beads with a central wavelength of 730nm is the 3rd pad. In any group, there are 4 pads between two adjacent monochromatic lamp beads. In each row of pads on the PCB aluminum substrate, white light beads are filled and arranged on the pads where the monochrome light beads are not arranged; The control unit includes an addresser and a control chip. The addresser generates an RS485 differential signal after encoding, inputs the dimming parameters to the corresponding control chip, and the control chip decodes the dimming parameters and outputs a PWM pulse width modulation signal, which is input to the corresponding drive unit; The driving unit is a driving chip, and the driving chip controls the brightness of the LED lamp beads in the LED light source module; The power supply module supplies power to the LED light source module, the control unit and the driving unit.

2. According to claim 1, a full-spectrum LED plant lighting system with adjustable light quality and light intensity and uniform illumination, characterized in that: It also includes a shell profile, in which the power module, the control unit, the drive unit and the LED light source module are all arranged.

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

4. The full-spectrum LED plant lighting system with adjustable light quality and light intensity and uniform illumination according to claim 2, characterized in that: The drive unit and the control unit are fully encapsulated in a wire slot box in the shell profile by using epoxy resin glue potting material.

5. The full-spectrum LED plant lighting system with adjustable light quality and light intensity and uniform illumination according to claim 1, characterized in that: The LED lamp beads are all SMD lamp beads.

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

7. The full-spectrum LED plant lighting system with adjustable light quality and light intensity and uniform illumination according to claim 1, characterized in that: The addressing device is a DMX handheld addressing device.

8. The full-spectrum LED plant lighting system with adjustable light quality and light intensity and uniform illumination according to claim 1, characterized in that: The power module is provided with dustproof and waterproof components, and the protection grade is IP67.

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