Distributed laser plant light supplementing device

Abstract

The invention relates to the technical field of seed germination planting equipment, in particular to a distributed laser plant light supplementing device. Comprising a laser module group which is provided with a plurality of laser modules with the same structure; the laser module comprises a laser module shell, a light emitting panel, a dodging lens array, a semiconductor laser and a laser module cable joint; the light emitting panel, the dodging lens array and the semiconductor laser are sequentially stacked in the laser module shell from bottom to top; the semiconductor laser is electrically connected with the laser module cable joint; the plurality of laser modules with the same structure are electrically connected with the intelligent controller through connecting cables respectively; the multiple laser modules of the same structure are arranged at equal intervals along the same axis, each laser module projects a rectangular laser beam, and the multiple rectangular laser beams form a stacked rectangular light field. The advantages are that the design difficulty of the laser module heat radiation structure is reduced and the heat radiation efficiency is improved; the number of sensors and circuits is reduced, and the cost is reduced; and a large-area laser regulation field is formed.

Description

Technical Field

[0001] The invention relates to the technical field of seed germination and planting equipment, and in particular to a distributed laser plant lighting device. Background Art

[0002] Laser lighting has broad application prospects in greenhouse and other facility agriculture due to its advantages of high brightness, low energy consumption, and long life. Laser can provide the specific spectrum required for plant growth, promote photosynthesis, and improve crop yield and quality. At the same time, the laser lighting system is easy to control, and the light intensity and time can be adjusted according to the crop growth cycle to achieve precision agricultural management. The present invention proposes a distributed laser light supplement equipment based on a semiconductor laser homogenization module and a regional master control electrical module, which provides low-cost light supplement and regulation technology for facility agriculture.

[0003] Distributed laser lighting equipment is a light control method that uses a semiconductor laser homogenization module as a light source, and uses a regional master control module to control multiple laser modules to build a large-area laser control field of 120-240 square meters, so that plants within the laser field can receive coherent laser irradiation, accelerate their photosynthesis rate, increase nutrient accumulation, and achieve the goal of improving quality and increasing production.

[0004] Existing agricultural laser lighting equipment is mainly aimed at facility agriculture scenarios, including the publicly available laser lights based on lens systems, laser irradiation devices based on optical fiber transmission, scanning laser lights, integrated laser lights, etc. Although the above devices have made great progress in improving light intensity and automation, they still have various problems, as follows: The external laser lamp based on the beam splitter prism (CN 104737842 A) uses a lens group to collimate the laser and then emit it to several groups of beam splitting prisms. Each prism refracts a path of laser light to the light homogenizing device to achieve large-area laser irradiation. However, the optical path structure of this solution is complex, and the laser will be absorbed and scattered by water vapor or dust during transmission, introducing additional light loss and reducing energy utilization efficiency.

[0005] The reflector-based laser lamp (JP W02016 / 117314 A1) uses a collimator to collimate the laser and then emit it to the reflector, which is then reflected to the light homogenization device to achieve laser irradiation of plants. However, this solution also has the problems of complex optical path and high cost.

[0006] Laser irradiation device based on optical fiber transmission (US 10,966,376 B2), which transmits laser radiation of a specific wavelength through optical fiber to stimulate plant photopigments to produce predetermined physiological reactions, maximize plant photosynthesis efficiency, and control photomorphological reactions. However, this solution requires high-precision fiber coupling technology. At the same time, it is limited by the limited cutoff wavelength range of one optical fiber and cannot cover the visible light band of 400-800nm. Multiple fiber coupling modules are required to meet the plant's lighting needs. Therefore, the technical complexity and cost are high, and it is not suitable for large-scale promotion.

[0007] Scanning laser light (JP 5645504 B2) uses a variety of optical elements and high-precision electronic control modules to control the switching and scanning range of the laser light source, ensuring that the laser is only emitted to the area where the plants are located, and no laser irradiation is applied to other areas, thereby improving the efficiency of light energy utilization and reducing energy consumption. However, in this solution, the laser device needs to be arranged above each plant, and the equipment cost is high, which is not suitable for large-scale greenhouse production applications.

[0008] The integrated laser lamp (CN 109945079 B and CN 103629596 B) uses special-shaped heat sinks and other solutions to complete the development of integrated laser lamps. However, due to the high degree of integration, the heat dissipation characteristics of the light source will be limited, and high output power cannot be achieved, resulting in limited irradiation area.

[0009] Conventional fill-light devices generally adopt complex optical path structures, which have the problems of complex structure and high cost. The above problems seriously affect the application prospects of fill-light devices in large-scale facility agricultural production. Summary of the invention

[0010] In order to solve the above problems, the present invention provides a distributed laser plant lighting device.

[0011] The present invention aims to provide a distributed laser plant lighting device, comprising: a laser module group, an intelligent controller, and a connecting cable; The laser module group is provided with a plurality of laser modules with the same structure; The laser module comprises a laser module housing, a light emitting panel, a light homogenizing lens array, a semiconductor laser and a laser module cable connector; the light emitting panel, the light homogenizing lens array and the semiconductor laser are sequentially stacked from bottom to top in the laser module housing, and the light emitting panel is arranged on the lower end surface of the laser module housing; the semiconductor laser is electrically connected to the laser module cable connector; Multiple laser modules with the same structure are electrically connected to the intelligent controller through connecting cables respectively; multiple laser modules with the same structure are arranged equidistantly along the same axis, each of the laser modules projects a rectangular laser beam, and multiple rectangular laser beams form a superimposed rectangular light field.

[0012] Preferably, the laser module is also provided with a heat sink-based circuit board, a laser radiator and a heat dissipation back plate; the semiconductor laser is tightly fitted with the laser radiator through the heat sink-based circuit board; and the heat dissipation back plate is fixed on the top of the laser module housing.

[0013] Preferably, the intelligent controller includes a communication module, an information display screen, a light intensity detector, a temperature detector, a gas composition detector, a cable interface, a power access port, a main control board and a controller housing; The communication module, the information display screen, the light intensity detector, the temperature detector and the gas composition detector are arranged below the controller housing; The main control board is arranged in the controller housing; The number of the cable interfaces is the same as the number of the laser modules; A plurality of the cable interfaces and the power supply inlet are arranged on one side of the controller housing; The communication module, the information display screen, the light intensity detector, the temperature detector, the gas composition detector, the cable interface, the power inlet and the main control board are electrically connected.

[0014] Preferably, the information collected by the light intensity detector, the temperature detector and the gas composition detector is displayed in real time through the information display screen.

[0015] Preferably, the laser beam emitted by the semiconductor laser is transmitted and shaped through the light homogenizing lens array to obtain a rectangular laser beam.

[0016] Preferably, the light homogenizing lens array is a free-form surface lens array, and the curvature range of the free-form surface lenses is 0.65-2.36.

[0017] Preferably, the light output panel is made of resin or glass, so as to ensure high transmittance of the laser and make the laser module sealed and waterproof.

[0018] Preferably, the emission wavelength range of the semiconductor laser is 400-1000 nm.

[0019] Preferably, the energy of the rectangular light field formed by the superposition of multiple rectangular laser beams is ≥ 0.1 μmol / m 2 / s.

[0020] Preferably, the irradiation area of ​​the rectangular light field formed by the superposition of multiple rectangular laser beams is 120 to 240 square meters.

[0021] Compared with the prior art, the present invention can achieve the following beneficial effects: The distributed structure design based on photoelectric separation is adopted to reduce the design difficulty of the heat dissipation structure of the laser module and improve the heat dissipation efficiency, effectively solving the problem of complex heat dissipation structure and unsatisfactory heat dissipation effect of the photoelectric integrated laser lamp; it solves the problem of complex structure and high cost of agricultural laser fill light. Using the same intelligent control module to control multiple laser modules reduces the number of sensors and circuits, effectively reduces the cost of circuits and sensors, and increases the irradiation area of ​​a single set of equipment, thereby reducing the per-acre cost of laser lamps, effectively solving the problem of high cost and inability to promote laser lamps on a large scale. The laser module adopts a free-form lens array (curvature 0.65-2.36) to increase the divergence angle of the laser to 60-120°. Taking advantage of the narrow line width of the laser spectrum and the long irradiation distance, it ensures that each laser module can irradiate 40-60 square meters, and a single set of 3-4 laser modules irradiates 120-240 square meters, forming a large-area laser control field, so that the plants within the irradiation range of the laser field receive more than 0.1μmol / m 2 / s coherent laser irradiation accelerates its photosynthesis rate, increases nutrient accumulation, and achieves the goal of improving quality and increasing yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 1 is a top view of a distributed laser plant lighting device provided according to an embodiment of the present invention.

[0023] Figure 2 It is a bottom view of a distributed laser plant lighting device provided according to an embodiment of the present invention.

[0024] Figure 3 The present invention is a schematic diagram of the light-emitting surface structure of a distributed laser plant lighting device provided according to an embodiment of the present invention.

[0025] Figure 4 The figure is a schematic diagram of the structure of a laser module in a distributed laser plant lighting device provided according to an embodiment of the present invention.

[0026] Figure 5 It is a structural schematic diagram of an intelligent control module in a distributed laser plant lighting device provided according to an embodiment of the present invention.

[0027] Figure 6 The present invention is a schematic diagram of the superimposed light field distribution of a distributed laser plant lighting device provided according to an embodiment of the present invention.

[0028] Reference numerals: 11. The first laser module; 111. Laser module housing; 112. Light output panel; 113. Light homogenizing lens array; 114. Semiconductor laser; 115. Heat sink-based circuit board; 116. Laser radiator; 117. Heat dissipation backplane; 118. Laser module cable connector; 12. The second laser module; 13. The third laser module; 2. Intelligent controller; 21. Communication module; 22. Information display screen; 23. Light intensity detector; 24. Temperature detector; 25. Gas composition detector; 26. Cable interface; 27. Power supply inlet; 28. Controller housing; 3. Connect the cables; 6A. First rectangular laser beam field; 6B. Second rectangular laser beam field; 6C. Third rectangular laser beam field. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] Example 1 See also Figures 1 to 5 As shown, this embodiment provides a distributed laser plant lighting device, including: a laser module group, an intelligent controller 2, and a connecting cable 3; The laser module group is provided with at least 2 laser modules; the technical solution of this embodiment is provided with 3 laser modules; The laser module group includes: a first laser module 11, a second laser module 12, and a third laser module 13; the first laser module 11, the second laser module 12, and the third laser module 13 have the same structure; The connecting cable 3 is a multi-core cable; the number of connecting cables 3 is the same as the number of laser modules; The first laser module 11, the second laser module 12 and the third laser module 13 are electrically connected to the intelligent controller 2 via a connecting cable 3 respectively; The first laser module 11 includes: a laser module housing 111, a light output panel 112, a light homogenizing lens array 113, a semiconductor laser 114, a heat sink-based circuit board 115, a laser radiator 116, a heat dissipation back plate 117, and a laser module cable connector 118; The light emitting panel 112 is arranged on the lower end surface of the laser module housing 111; the light homogenizing lens array 113 is arranged above the light emitting panel 112; the semiconductor laser 114 is arranged above the light homogenizing lens array 113; the lower surface of the heat sink-based circuit board 115 is attached to the semiconductor laser 114; the laser radiator 116 is fixed on the heat sink-based circuit board 115; the heat dissipation back plate 117 is fixed on the top of the laser module housing 111; the laser module cable connector 118 is arranged on one side of the outer end surface of the laser module housing 111; the laser module cable connector 118 is electrically connected to the semiconductor laser 114; that is, the light emitting panel 112, the light homogenizing lens array 113, the semiconductor laser 114, the heat sink-based circuit board 115, the laser radiator 116 and the heat dissipation back plate 117 are stacked in sequence from bottom to top in the laser module housing 111; the semiconductor laser 114 is closely attached to the laser radiator 116 through the heat sink-based circuit board 115; The light output panel 112 is made of resin or glass to ensure high transmittance of the laser and acts as a sealing element to ensure the waterproof function of the first laser module; The light homogenizing lens array 113 transmits and shapes the laser beam emitted by the semiconductor laser 114 to obtain a rectangular laser beam; the light homogenizing lens array 113 is a free-form surface lens array (curvature 0.65-2.36), which increases the divergence angle of the laser to 60-120°; The emission wavelength of the semiconductor laser 114 ranges from 400 to 1000 nm; The laser module cable connector 118 is a multi-core cable waterproof connector.

[0032] The intelligent controller 2 includes: a communication module 21, an information display screen 22, a light intensity detector 23, a temperature detector 24, a gas composition detector 25, a cable interface 26, a power supply inlet 27, a main control board, and a controller housing 28; The communication module 21, the information display screen 22, the light intensity detector 23, the temperature detector 24, and the gas composition detector 25 are arranged below the controller housing 28; the main control board is arranged in the controller housing 28; there are multiple cable interfaces 26, and the number of cable interfaces 26 is the same as the number of laser modules; multiple cable interfaces 26 and a power access port 27 are arranged on one side of the controller housing 28; the communication module 21, the information display screen 22, the light intensity detector 23, the temperature detector 24, the gas composition detector 25, the cable interface 26, the power access port 27 and the main control board are electrically connected; The communication module 21 is responsible for information transmission and intelligent control with the overall communication equipment of the entire agricultural production base; The light intensity, temperature, gas type and concentration in the air and other information collected by the light intensity detector 23, temperature detector 24 and gas composition detector 25 are transmitted to the general communication equipment of the agricultural production base through the communication module 21; the signal transmission frequency can be selected to be sent in real time or at a fixed time; and then uploaded to the cloud database by the general communication equipment of the agricultural production base, and at the same time receive the control signal from the cloud to adjust the spectrum and light intensity and other parameters of the laser; The information such as light intensity, temperature, gas type and concentration in the air collected by the light intensity detector 23 , the temperature detector 24 and the gas composition detector 25 is displayed in real time on the information display screen 22 .

[0033] Example 2 See also Figures 1 to 6 As shown, this embodiment provides a distributed laser plant lighting device, including: a laser module group, an intelligent controller 2, and a connecting cable 3; The laser module group includes: a first laser module 11, a second laser module 12, and a third laser module 13; the first laser module 11, the second laser module 12, and the third laser module 13 have the same structure; The first laser module 11, the second laser module 12, and the third laser module 13 are arranged equidistantly along the same axis; The connecting cable 3 is a multi-core cable; there are three connecting cables 3, and the intelligent controller 2 is electrically connected to the first laser module 11, the second laser module 12 and the third laser module 13 respectively through the three connecting cables 3; The first laser module 11 projects a first rectangular laser beam field 6A downward, the second laser module 12 projects a second rectangular laser beam field 6B downward, and the third laser module 13 projects a third rectangular laser beam field 6C downward. The first rectangular laser beam field 6A, the second rectangular laser beam field 6B and the third rectangular laser beam field 6C form a rectangular light field with superimposed beams. The irradiation area of ​​the light field is 120~240 square meters; when the rectangular laser beams projected by more than two laser modules are superimposed, the light field energy is ≥0.1μmol / m 2 / s; According to field tests, when the laser energy received by plants exceeds 0.1 μmol / 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.

[0034] 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.

[0035] 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 distributed laser plant lighting device, characterized in that: include: Laser module set, intelligent controller, connecting cables; The laser module group is provided with a plurality of laser modules with the same structure; The laser module comprises a laser module housing, a light emitting panel, a light homogenizing lens array, a semiconductor laser and a laser module cable connector; the light emitting panel, the light homogenizing lens array and the semiconductor laser are sequentially stacked from bottom to top in the laser module housing, and the light emitting panel is arranged on the lower end surface of the laser module housing; the semiconductor laser is electrically connected to the laser module cable connector; Multiple laser modules with the same structure are electrically connected to the intelligent controller through connecting cables respectively; multiple laser modules with the same structure are arranged equidistantly along the same axis, each of the laser modules projects a rectangular laser beam, and multiple rectangular laser beams form a superimposed rectangular light field.

2. A distributed laser plant lighting device according to claim 1, characterized in that: The laser module is also provided with a heat sink-based circuit board, a laser radiator and a heat dissipation back plate; the semiconductor laser is closely attached to the laser radiator through the heat sink-based circuit board; and the heat dissipation back plate is fixed on the top of the laser module housing.

3. A distributed laser plant lighting device according to claim 1, characterized in that: The intelligent controller includes a communication module, an information display screen, a light intensity detector, a temperature detector, a gas composition detector, a cable interface, a power access port, a main control board and a controller housing; The communication module, the information display screen, the light intensity detector, the temperature detector and the gas composition detector are arranged below the controller housing; The main control board is arranged in the controller housing; The number of the cable interfaces is the same as the number of the laser modules; A plurality of the cable interfaces and the power supply inlet are arranged on one side of the controller housing; The communication module, the information display screen, the light intensity detector, the temperature detector, the gas composition detector, the cable interface, the power inlet and the main control board are electrically connected.

4. A distributed laser plant lighting device according to claim 3, characterized in that: The information collected by the light intensity detector, the temperature detector and the gas composition detector is displayed in real time through the information display screen.

5. The distributed laser plant lighting device according to claim 1, characterized in that: The laser beam emitted by the semiconductor laser is transmitted and shaped through the light homogenizing lens array to obtain a rectangular laser beam.

6. A distributed laser plant lighting device according to claim 5, characterized in that: The light homogenizing lens array is a free-form surface lens array, and the curvature range of the free-form surface lens is 0.65-2.

36.

7. The distributed laser plant lighting device according to claim 1, characterized in that: The light output panel is made of resin or glass, which is used to ensure high transmittance of the laser and make the laser module sealed and waterproof.

8. A distributed laser plant lighting device according to any one of claims 1 to 7, characterized in that: The emission wavelength range of the semiconductor laser is 400-1000nm.

9. A distributed laser plant lighting device according to claim 8, characterized in that: The energy of the rectangular light field formed by the superposition of multiple rectangular laser beams is ≥ 0.1 μmol / m 2 / s.

10. A distributed laser plant lighting device according to claim 9, characterized in that: The irradiation area of ​​the rectangular light field formed by the superposition of multiple rectangular laser beams is 120~240 square meters.

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