Laser light supplementing device for field crop growth regulation and control

Abstract

The invention relates to the technical field of field plant cultivation devices, in particular to a laser light supplementing device for field crop growth regulation and control. Comprising a power supply module, a control circuit module, a laser lighting module and a supporting column. The solar power generation panel, the energy storage unit and the laser transmitter are electrically connected with the control circuit module; the laser lighting module is fixed to the top of the supporting column. The solar power generation panel charges the energy storage unit through photoelectric conversion; the laser lighting module comprises a laser transmitter, a free-form surface lens array, a light-transmitting panel and a cover body, the free-form surface lens array covers the outer side of the transmitting end of the laser transmitter, and the light-transmitting panel is connected to the outer side of the free-form surface lens array in a sleeving mode. The upper part of the light-transmitting panel is hermetically connected with the cover body; a laser beam emitted by the laser emitter is transmitted and shaped through the free-form surface lens array, and a rectangular laser beam is emitted from the light-transmitting panel. The device has the advantages that the energy uniformity of light beams is improved, the energy consumption is reduced, and the irradiation distance is long.

Description

Technical Field

[0001] The invention relates to the technical field of field plant cultivation devices, and in particular to a laser light supplement device for regulating the growth of field crops. Background Art

[0002] Artificial light sources, as light sources for light environment regulation in facility agriculture, can effectively increase the yield of facility fruits and vegetables. Therefore, it is feasible and effective to use artificial light to increase the yield of staple crops in large fields. However, due to the short irradiation distance and high energy consumption of traditional artificial light sources, it cannot be promoted and applied in large fields.

[0003] Semiconductor lasers have the advantages of direct electrical pumping, high electro-optical conversion efficiency, high output power, wide spectral spectrum, low power consumption, and small size. Lasers have broad application prospects in the fields of breeding and seedling raising, crop lighting, pest control and weed control. Among them, field crop lighting is a physical light environment control method that uses high-power semiconductor lasers as light sources. It is necessary to irradiate lasers of appropriate power density to the growth points and leaves of staple crops, and use the coherent characteristics of lasers to improve the light energy utilization efficiency of crops, thereby increasing the dry matter accumulation of crops and enhancing the stress resistance of crops. This method has the advantages of low power consumption, good yield increase effect, and green environmental protection.

[0004] At present, the existing agricultural light control equipment is mainly provided for use in facility agriculture, including mechanical rotating fill light, intelligent fill light device based on the Internet of Things, and laser fill light device based on light combining elements. The above devices require supporting conditions such as agricultural Internet of Things and basic electricity, and are more suitable for application scenarios such as greenhouses and plant factories. Considering that staple food crops are mainly grown in open fields, in order to improve the yield and quality of staple food, a low-cost, easy-to-install and maintain laser fill light device is needed, which takes advantage of the long distance of laser irradiation to achieve low-cost light energy supplementation and regulation of staple food crops in the field.

[0005] Although existing agricultural supplementary lighting has made great progress in improving light intensity and automation, various problems still exist.

[0006] In the patent application with publication number CN110388596A and invention name “Mechanical Rotating Fill Light”, a rotating mechanical device is used to drive LED lights or laser light sources to supplement the environment with light energy. However, the rotating parts have problems of wear and poor stability. At the same time, the high energy consumption of LED lights also affects the large-scale application of fill lights.

[0007] In the patent application with publication number CN112586241A and invention name “Intelligent fill light device based on Internet of Things”, a communication module is used to link the fill light with the agricultural Internet of Things to achieve real-time control of the fill light. However, this solution has high energy consumption and requires the support of power cables, resulting in high laying costs and unable to meet the demand for low-cost light sources in farmland.

[0008] Conventional fill-light devices generally use complex mechanical structures or LED light sources, which have problems such as high energy consumption, poor stability, and high cost. The above problems seriously affect the application prospects of fill-light devices in large-scale farmland production. Summary of the invention

[0009] In order to solve the above problems, the present invention provides a laser light supplement device for regulating the growth of field crops.

[0010] The first object of the present invention is to provide a laser light supplement device for field crop growth regulation, comprising: a power supply module, a control circuit module, a laser lighting module and a support column; The power supply module includes a solar panel and an energy storage unit; the solar panel is used to power the laser lighting module and charge the energy storage unit; the solar panel converts light energy into electrical energy, and stores the electrical energy in the energy storage unit through the control circuit module; The laser lighting module comprises a laser emitter, a free-form surface lens array, a light-transmitting panel and a cover body, wherein the free-form surface lens array covers the outside of the emission end of the laser emitter, the light-transmitting panel is sleeved on the outside of the free-form surface lens array, and the top of the light-transmitting panel is sealed and connected to the cover body, so that a closed space is formed inside the laser lighting module; the free-form surface lens array transmits and shapes the laser beam emitted by the laser emitter, and emits a rectangular laser beam from the light-transmitting panel; the bottom of the laser lighting module is fixed on the top of the support column; The solar power generation panel, the energy storage unit and the laser transmitter are electrically connected to the control circuit module respectively; the control circuit module is used to control the output power of the laser transmitter, as well as the input and output of the solar power generation panel and the energy storage unit.

[0011] Preferably, the optical power of the laser lighting module in a single direction is less than 10 watts; the laser emitter is a semiconductor laser, and the emission wavelength range of the semiconductor laser is 400-1000 nm.

[0012] Preferably, the power supply module is also provided with a mains access terminal, and the power supply grid is connected to the device through the mains access terminal; the power supply module can automatically switch the power supply between the solar power generation panel, the energy storage unit and the power supply grid.

[0013] Preferably, the energy storage unit is composed of a plurality of battery modules, and the total storage capacity is not less than 1 kWh; and the solar power generation panel is provided with at least one, and the power generation capacity is greater than 50 watts.

[0014] Preferably, the support column is a height-adjustable support component with a height of 3 to 4 meters.

[0015] Preferably, the light-transmitting panel is made of glass, crystal, acrylic, transparent resin or silicate; the divergence angle of the rectangular laser beam emitted by the light-transmitting panel is 90-110°.

[0016] Preferably, the solar power generation panel is a monocrystalline silicon solar cell, a polycrystalline silicon solar cell, an amorphous silicon solar cell or a multi-compound solar cell.

[0017] Preferably, the curvature of the free-form surface lens array is 0.65-2.36.

[0018] The second purpose of the present invention is to provide a laser fill light device array, including a plurality of laser fill light devices for regulating the growth of field crops; the laser fill light devices are distributed in an array, and the spacing between the laser fill light devices is 20~60m.

[0019] Preferably, the energy of the superimposed light field formed by the laser light supplement device array is greater than 0.1 μmol / m 2 / s.

[0020] Compared with the prior art, the present invention can achieve the following beneficial effects: The present invention solves the problems of complex structure, high energy consumption and high cost of agricultural fill-in lights; by adopting a semiconductor laser based on a free-form lens array, the laser beam is shaped into a rectangular spot using the free-form lens array, thereby improving the energy uniformity of the light beam and achieving rectangular laser output with uniform energy distribution. At the same time, by utilizing the advantages of low energy consumption and long irradiation distance of semiconductor lasers, a set of solar panels and energy storage batteries can be used to ensure the normal operation of the laser light, and the irradiation area is close to 3,000 square meters. If LED lights are used to illuminate the same area, the power consumption will exceed 20,000 watts, and grid power will need to be introduced. Therefore, the present invention provides a low-energy, low-cost, self-circulating laser lighting device for farmland production environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure is a schematic diagram of the overall structure of a laser light supplement device for regulating the growth of field crops provided according to an embodiment of the present invention.

[0022] Figure 2 The figure is a schematic structural diagram of a laser illumination module of a laser supplementary light device for regulating the growth of field crops provided according to an embodiment of the present invention.

[0023] Figure 3 The diagram is a schematic diagram of a free-form surface lens array structure of a laser light supplement device for regulating the growth of field crops provided according to an embodiment of the present invention.

[0024] Figure 4 The diagram is a schematic diagram of the optical path of a free-form lens array of a laser light supplement device for regulating the growth of field crops provided according to an embodiment of the present invention.

[0025] Figure 5 The figure is a top view of the light field distribution of a laser light supplement device for regulating the growth of field crops provided according to an embodiment of the present invention.

[0026] Figure 6 It is a top view of the superimposed light field distribution of four laser fill light devices provided according to an embodiment of the present invention.

[0027] Figure 7 It is a 2D diagram of energy distribution of a superimposed light field provided according to an embodiment of the present invention.

[0028] Figure 8 It is a 3D diagram of energy distribution of a superimposed light field provided according to an embodiment of the present invention.

[0029] Reference numerals: 1. Solar panels; 2. Energy storage unit; 3. Control circuit module; 4. Laser transmitter; 5. Free-form surface lens array; 6. Translucent panel; 7. Support column; 101. Laser light supplement device; 102. Irradiation light field distribution; 103. Superimpose light field distribution. DETAILED DESCRIPTION

[0030] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, the same modules are represented by the same reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, the detailed description thereof will not be repeated.

[0031] 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 specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation of the present invention.

[0032] like Figure 1-Figure 4As shown, the present invention provides a laser supplementary lighting device for field crop growth regulation, comprising: a power supply module, a control circuit module 3, a laser lighting module and a support column 7; The power supply module includes a solar panel 1 and an energy storage unit 2; The solar power generation panel 1 is used as a power supply unit of the device to supply power to the laser lighting module and charge the energy storage unit 2; the solar power generation panel 1 can be a single crystal silicon solar cell, a polycrystalline silicon solar cell, an amorphous silicon solar cell or a multi-compound solar cell; at least one solar power generation panel 1 is provided, and a single power generation capacity is greater than 50 watts; The energy storage unit 2 is composed of a plurality of storage battery modules; the solar panel 1 converts light energy into electrical energy, and stores the electrical energy in the storage battery module through the control circuit module 3; the total storage capacity of the energy storage unit 2 is not less than 1 kWh; The power supply module is also provided with a mains access terminal, through which the power supply grid is connected to the device; the power supply module can automatically switch the power supply between the solar power generation panel 1, the energy storage unit 2 and the power supply grid; The laser lighting module includes a laser emitter 4, a free-form surface lens array 5, a light-transmitting panel 6 and a cover body. The free-form surface lens array 5 covers the outer side of the emission end of the laser emitter 4, and the light-transmitting panel 6 is sleeved on the outer side of the free-form surface lens array 5. The upper part of the light-transmitting panel 6 is sealed and connected to the cover body, so that a closed space is formed inside the laser lighting module to play a role in dustproof and waterproof. The free-form surface lens array 5 transmits and shapes the laser beam emitted by the laser emitter 4 and emits a rectangular laser beam from the light-transmitting panel 6 ( Figure 3-Figure 4 ); The light-transmitting panel 6 is made of glass, crystal, acrylic, transparent resin or silicate; There is at least one laser emitter 4, free-form surface lens array 5 and light-transmitting panel 6; the optical power in a single direction is less than 10 watts; The emission wavelength range of the laser transmitter 4 is 400-1000nm; The divergence angle of the rectangular laser beam is increased to 90-110° by the free-form surface lens array 5; The solar panel 1, the energy storage unit 2 and the laser transmitter 4 are electrically connected to the control circuit module 3 through cables respectively; the control circuit module 3 serves as a control module of the device, and the control circuit module 3 is used to control the output power of the laser transmitter 4, as well as the input and output control of the solar panel 1 and the energy storage unit 2; The bottom of the laser lighting module is fixedly connected to a support column 7, which is a height-adjustable support component; the height of the support column 7 is 3 to 4 meters.

[0033] Example 1 like Figure 1-Figure 4As shown, this embodiment provides a laser light supplement device for field crop growth regulation, including: a power supply module, a control circuit module 3, a laser lighting module and a support column 7; The power supply module includes a solar power generation panel 1 and an energy storage unit 2; the solar power generation panel 1 is arranged above the laser lighting module and serves as a power supply unit of the device, and is used to supply power to the laser lighting module and charge the energy storage unit 2; the solar power generation panel 1 adopts a monocrystalline silicon solar cell; there are a plurality of solar power generation panels 1, and the power generation capacity of each panel is greater than 50 watts; The energy storage unit 2 is composed of a plurality of storage battery modules; the solar panel 1 converts light energy into electrical energy, and stores the electrical energy in the storage battery module through the control circuit module 3; the total storage capacity of the energy storage unit 2 is not less than 1 kWh; The laser lighting module includes a laser emitter 4, a free-form surface lens array 5, a light-transmitting panel 6 and a cover body. The free-form surface lens array 5 covers the outer side of the emission end of the laser emitter 4, and the light-transmitting panel 6 is sleeved on the outer side of the free-form surface lens array 5. The upper side of the light-transmitting panel 6 is sealed and connected to the cover body, so that a closed space is formed inside the laser lighting module to play a role in dustproof and waterproof. The free-form surface lens array 5 transmits and shapes the laser beam emitted by the laser emitter 4 and emits a rectangular laser beam from the light-transmitting panel 6. The optical power of the laser lighting module in a single direction is less than 10 watts, and the optical power in four directions is less than 40 watts; The laser emitter 4 is a semiconductor laser with an emission wavelength range of 400-1000nm; The curvature of the free-form lens array is 0.65~2.36; The divergence angle of the rectangular laser beam is increased to 90-110° by the free-form surface lens array 5; The solar panel 1, the energy storage unit 2 and the laser transmitter 4 are electrically connected to the control circuit module 3 through cables respectively; the control circuit module 3 serves as a control module of the device, and the control circuit module 3 is used to control the output power of the laser transmitter 4, as well as the input and output control of the solar panel 1 and the energy storage unit 2; The bottom of the laser lighting module is fixedly connected to a support column 7, which is a height-adjustable support component; the height of the support column 7 is 4 meters.

[0034] Figure 5 The irradiated light field distribution 102 of the laser light supplement device 101 is shown. The device can form a light field with an irradiation area of ​​nearly 3,000 square meters, and the irradiation effect is good.

[0035] Example 2 This embodiment provides a laser supplementary lighting device for field crop growth regulation, including: a power supply module, a control circuit module, a laser lighting module and a support column; The power supply module includes a solar panel and an energy storage unit. The power supply module is also provided with a mains access terminal, through which the power supply grid is connected to the device; The power supply module is also provided with a power supply monitoring circuit, which monitors the power generation of the solar panel and the energy storage unit. The power supply monitoring circuit receives and receives the power consumption of the laser transmitter. According to the power generation or consumption, the power supply is automatically switched between the solar panel, the energy storage unit or the mains supply to ensure the stability of the light field energy output by the laser fill light device.

[0036] The other structures are the same as those in Example 1.

[0037] Example 3 A laser light-filling device array, comprising four laser light-filling devices for regulating the growth of field crops. The laser light-filling devices for regulating the growth of field crops in this embodiment are the same as those described in Embodiment 1; Multiple laser light-filling devices 101 are distributed in an array, and the spacing between the laser light-filling devices is 20-60m; the laser light-filling device array forms a light field superposition, and the superimposed light field distribution 103 is as follows: Figure 6 As shown; the superimposed light field energy (PPFD) exceeds 0.1μmol / m 2 / s; like Figure 7 and Figure 8 As shown in the field test, when the laser energy received by the plant exceeds 0.1μmol / m 2 / s, the photosynthesis carriers in the plants will form a periodic arrangement, increase the absorption coefficient of sunlight, enhance the photosynthesis of the plants, and thus increase yield and quality.

[0038] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the disclosure of the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution disclosed in the present invention can be achieved, and this document does not limit this.

[0039] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser light supplement device for regulating the growth of field crops, characterized in that: include: Power supply module, control circuit module, laser lighting module and support column; The power supply module includes a solar panel and an energy storage unit; the solar panel is used to power the laser lighting module and charge the energy storage unit; the solar panel converts light energy into electrical energy, and stores the electrical energy in the energy storage unit through the control circuit module; The laser lighting module comprises a laser emitter, a free-form surface lens array, a light-transmitting panel and a cover body, wherein the free-form surface lens array covers the outside of the emission end of the laser emitter, the light-transmitting panel is sleeved on the outside of the free-form surface lens array, and the top of the light-transmitting panel is sealed and connected to the cover body, so that a closed space is formed inside the laser lighting module; the free-form surface lens array transmits and shapes the laser beam emitted by the laser emitter, and emits a rectangular laser beam from the light-transmitting panel; the bottom of the laser lighting module is fixed on the top of the support column; The solar power generation panel, the energy storage unit and the laser transmitter are electrically connected to the control circuit module respectively; the control circuit module is used to control the output power of the laser transmitter, as well as the input and output of the solar power generation panel and the energy storage unit.

2. The laser light supplement device for field crop growth regulation according to claim 1, characterized in that: The optical power of the laser lighting module in a single direction is less than 10 watts; the laser emitter is a semiconductor laser, and the emission wavelength range of the semiconductor laser is 400-1000nm.

3. The laser light supplement device for field crop growth regulation according to claim 1, characterized in that: The power supply module is also provided with a mains access terminal, and the power supply network is connected to the device through the mains access terminal; the power supply module can automatically switch the power supply between the solar power generation panel, the energy storage unit and the power supply network.

4. The laser light supplement device for field crop growth regulation according to claim 3, characterized in that: The energy storage unit is composed of multiple battery modules, and the total storage capacity is not less than 1 kWh; the solar power generation panel is at least provided with one, and the power generation capacity is greater than 50 watts.

5. The laser light supplement device for field crop growth regulation according to claim 1, characterized in that: The support column is a height-adjustable support component with a height of 3 to 4 meters.

6. The laser light supplement device for field crop growth regulation according to claim 1, characterized in that: The light-transmitting panel is made of glass, crystal, acrylic, transparent resin or silicate; the divergence angle of the rectangular laser beam emitted by the light-transmitting panel is 90-110°.

7. The laser light supplement device for field crop growth regulation according to claim 1, characterized in that: The solar power generation panel is a monocrystalline silicon solar cell, a polycrystalline silicon solar cell, an amorphous silicon solar cell or a multi-compound solar cell.

8. The laser light supplement device for field crop growth regulation according to claim 1, characterized in that: The curvature of the free-form surface lens array is 0.65-2.

36.

9. A laser light supplement device array, characterized in that: It comprises several laser light-filling devices for regulating the growth of field crops as described in any one of claims 1 to 8; the laser light-filling devices are distributed in an array, and the spacing between the laser light-filling devices is 20 to 60 m.

10. The laser light supplement device array according to claim 9, characterized in that: The energy of the superimposed light field formed by the laser light supplement device array is greater than 0.1 μmol / m 2 / s.

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