Agricultural light supplement lamp system and method based on optical fiber transmission and fluorescence conversion

Abstract

The invention belongs to the technical field of agricultural light supplement, and particularly relates to an agricultural light supplement lamp system and method based on optical fiber transmission and fluorescence conversion. Efficient light distribution from a single light source to multiple application terminals is achieved, and the proportion of blue light to red light can be flexibly adjusted according to the photosynthesis requirements of crops. In addition, the optical shaping system arranged behind the application tail end ensures that the light can be accurately irradiated on the target crop, so that the light utilization rate and the energy conversion efficiency are greatly improved. Through the technical innovation, the wiring design is simplified, the complexity and the cost of the system are reduced, and the effectiveness of photosynthesis and the growth quality of crops are remarkably improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of agricultural lighting supplementation, and in particular relates to an agricultural lighting supplementation lamp system and method based on optical fiber transmission and fluorescence conversion. Background Art

[0002] In modern agricultural production, light is one of the important factors affecting crop growth and yield. In order to compensate for the problem of insufficient or uneven natural light, agricultural supplementary lighting technology has been widely used. Traditional agricultural supplementary lighting systems mainly rely on LED lamps to provide additional light. Although such systems can supplement light to a certain extent, they have some obvious limitations: for example, they have large energy losses, complex and inflexible wiring, resulting in high installation and maintenance costs; at the same time, the spectrum provided by traditional supplementary lights is fixed, and it is difficult to accurately adjust according to the needs of different crop types and their growth periods, which limits the improvement of photosynthesis efficiency.

[0003] A key technical problem is that the existing LED lighting system lacks effective spectral adjustment capabilities and cannot provide optimized lighting conditions for the specific photosynthesis needs of different crops. This limited spectral flexibility directly leads to low efficiency in light energy utilization, which in turn affects the growth rate and ultimate yield of crops. Summary of the invention

[0004] The purpose of the present invention is to provide an agricultural fill lighting system and method based on optical fiber transmission and fluorescence conversion, which can realize efficient, flexible and precise control of agricultural fill lighting and improve the utilization rate of light through optical fiber transmission and fluorescence conversion technology, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides an agricultural lighting system based on optical fiber transmission and fluorescence conversion, comprising:

[0006] A blue semiconductor laser light source module is used to generate blue laser light; a fiber coupling device is used to introduce the blue laser light into the optical fiber for transmission; a fiber beam splitter is used to achieve light distribution from a single light source to multiple application terminals; the fluorescent material configured at the application terminal is used to absorb part of the blue light and convert it into red light to match the spectral requirements required for crop photosynthesis; an optical shaping system is arranged after the application terminal to adjust the beam shape to ensure that the light is accurately irradiated on the target crop.

[0007] Preferably, a multi-wavelength optical coupling module is also included, which is used to synchronously couple lasers in the blue light, green light and orange-yellow light bands into the same optical fiber to meet the spectral requirements of different crops in different growth periods.

[0008] Preferably, the fluorescent material is selected based on its excitation wavelength and fluorescence wavelength characteristics to achieve efficient blue light to red light conversion and adapt to the maximum absorption peaks of chlorophyll at 450nm and 660nm.

[0009] Preferably, it also includes an electrical control system for performing energy control at the light source and improving light utilization while simplifying wiring; the electrical control system includes an ambient light intensity detector for acquiring ambient light source information and driving the laser source to adjust the output light intensity accordingly, thereby achieving precise energy control and feedback regulation.

[0010] Preferably, the optical shaping system includes a shaping lens and an aspherical cylindrical lens, which are used to improve the light utilization rate on a single ridge of crops.

[0011] On the other hand, the present invention proposes an agricultural supplementary lighting method based on optical fiber transmission and fluorescence conversion, comprising the following steps: generating blue light laser through a blue light semiconductor laser light source module; introducing the blue light laser into the optical fiber using an optical fiber coupling device; distributing the light to different application ends using an optical fiber beam splitter; at the application end, converting part of the blue light into red light through fluorescent materials, optimizing the spectrum to meet the needs of crop photosynthesis; performing energy control at the light source through an electronic control system to simplify wiring and improve light utilization; and adjusting the light beam shape through an optical shaping system to ensure that the light is irradiated onto the target crop.

[0012] Preferably, before the blue light semiconductor laser light source module generates the blue light, it also includes an ambient light intensity detection for obtaining ambient light source information and adjusting the output light intensity of the laser source accordingly.

[0013] Preferably, the use of an optical fiber coupling device to introduce the blue laser into the optical fiber includes: using a multi-wavelength optical coupling technology to allow lasers in the blue, green and orange-yellow bands to be synchronously coupled into the same optical fiber.

[0014] Technical effects and advantages of the present invention: Compared with the prior art, the agricultural lighting system and method based on optical fiber transmission and fluorescence conversion proposed by the present invention have the following advantages:

[0015] The present invention realizes efficient light distribution from a single light source to multiple application terminals by using a blue light semiconductor laser light source module, a fiber coupling device, a fiber beam splitter, and fluorescent materials configured at the application terminal, and can flexibly adjust the ratio of blue light to red light according to the photosynthesis requirements of the crop. In addition, the optical shaping system arranged after the application terminal ensures that the light can be accurately irradiated onto the target crop, thereby greatly improving the utilization rate of light and the energy conversion efficiency. Through these technical innovations, the present invention not only simplifies the wiring design, reduces the complexity and cost of the system, but also significantly improves the effectiveness of photosynthesis and the growth quality of crops. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The block diagram of the agricultural lighting system based on optical fiber transmission and fluorescence conversion of the present invention;

[0017] Figure 2 It is a flow chart of the agricultural lighting method based on optical fiber transmission and fluorescence conversion of the present invention;

[0018] Figure 3 This is a schematic diagram of the principle of synchronously coupling lasers into the same optical fiber according to the present invention;

[0019] Figure 4 is an excitation wavelength curve diagram of the fluorescent material of the present invention;

[0020] Figure 5 is a fluorescence wavelength curve diagram of the fluorescent material of the present invention;

[0021] Figure 6 This is the chlorophyll absorption spectrum of the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] The present invention provides an agricultural lighting system based on optical fiber transmission and fluorescence conversion. Figure 1 As shown, it includes: blue light semiconductor laser light source module, fiber coupling device, fiber beam splitter, fluorescent material, optical shaping system and electric control system, etc. The details are as follows:

[0024] For example, a blue light semiconductor laser light source module is used to generate blue light laser; the blue light semiconductor laser light source module is one of the core components of the agricultural lighting system, and its main function is to generate blue light laser of a specific wavelength (usually around 450nm). The module consists of the following key components:

[0025] Blue semiconductor laser: High-efficiency, long-life blue semiconductor laser diodes (LDs) are used to provide stable blue light output. The selection of lasers is based on the crop's demand for blue light and the optimal excitation wavelength of the fluorescent material to ensure efficient light conversion efficiency.

[0026] Laser coupling technology: It includes a precise optical lens group and coupling mechanism to efficiently introduce blue laser into the optical fiber and reduce coupling loss. The fine-tuning device is used to achieve the best alignment between the laser and the optical fiber to ensure that as much light energy as possible enters the optical fiber transmission path.

[0027] Drive circuit and control module: The high-performance drive circuit is integrated to accurately adjust the laser's operating current, thereby controlling the laser output power. The control module is responsible for receiving data feedback from the ambient light sensor and adjusting the output intensity of the laser source according to the preset algorithm to meet the needs of different crops and growth stages. The system also includes temperature monitoring and protection functions to ensure that the laser operates stably within the appropriate operating temperature range.

[0028] The blue semiconductor laser light source module achieves the following significant technical effects:

[0029] High efficiency and stability: The high brightness and monochromatic blue laser provided by the blue semiconductor laser not only ensures sufficient light intensity, but also improves the efficiency of fluorescence conversion. At the same time, its long life reduces the maintenance cost and replacement frequency of the system.

[0030] Flexible energy control: The integrated electronic control system allows users to dynamically adjust laser output according to actual conditions. Combined with real-time data from ambient light sensors, it can achieve precise energy supply, optimize the photosynthesis process, and improve crop yield and quality.

[0031] Reduce energy consumption and improve light utilization: Compared with the traditional LED fill light system, the blue laser light source module makes the light energy more concentrated due to its high directivity and low divergence angle, reducing unnecessary energy loss, thereby improving the light utilization and energy efficiency of the entire system.

[0032] Simplified wiring and installation: Using optical fiber for long-distance, lossless optical transmission greatly simplifies wiring complexity, reduces installation difficulty and space occupancy, while also avoiding electromagnetic interference problems and enhancing system reliability and safety.

[0033] In summary, the blue light semiconductor laser light source module not only provides a high-quality light source for agricultural supplementary lighting, but also brings significant improvements in flexibility, efficiency and ease of use, providing a new solution for light supplementation in modern agricultural production.

[0034] Exemplarily, the fiber coupling device is used to introduce the blue laser into the optical fiber for transmission; the fiber coupling device is a key component for efficiently introducing the blue light generated by the blue semiconductor laser into the optical fiber for transmission. To achieve this goal, the device includes the following important design and technical features:

[0035] High-precision optical lens group: Use a group of carefully designed optical lenses (such as converging lenses, collimating lenses, etc.) to ensure that the blue laser can be effectively focused and collimated. The lens material is selected from special glass or crystal with low absorption and high transmittance to reduce the loss of light energy during the coupling process.

[0036] Multi-wavelength coupling technology: For applications that require simultaneous transmission of multiple color lasers (such as blue light, green light, and orange light), a special multi-wavelength coupler is used to simultaneously transmit light beams of different wavelengths in the same optical fiber. The design of the multi-wavelength coupler takes into account the difference in refractive index of each wavelength of light and optimizes the simultaneous coupling efficiency of multi-color light.

[0037] Design to minimize coupling loss: Anti-reflection coating is used at the coupling interface to reduce energy loss caused by reflection. Ensure that the fiber end face and the coupling device maintain extremely high cleanliness and flatness to avoid scattering loss caused by dust particles or other impurities.

[0038] Integrated monitoring and feedback system: Built-in optical power monitoring sensor detects coupling efficiency in real time and automatically adjusts parameters through the control system to maintain the optimal coupling state. The feedback mechanism ensures stable coupling performance even after long-term operation and adapts to temperature changes and other environmental factors.

[0039] Through the above specific implementation, the optical fiber coupling device achieves the following significant technical effects:

[0040] Efficient light energy transmission: Thanks to the high-precision optical design and fine-tuning alignment mechanism, blue laser can be coupled into the optical fiber with very high efficiency, greatly reducing energy loss and ensuring energy density during long-distance transmission.

[0041] Flexible multi-wavelength support: For applications that require multiple wavelength spectra, such as meeting the needs of different crops at different growth stages, multi-wavelength coupling technology allows a single optical fiber to carry multiple colors of light, simplifying wiring and increasing system flexibility.

[0042] Enhanced stability and reliability: The integrated monitoring and feedback system not only ensures the continuous stability of the coupling process, but also enhances the reliability and durability of the entire system, especially in complex and changing working environments.

[0043] In summary, as an important link between the light source and the optical fiber transmission path, the fiber coupling device, with its advanced design and technical application, provides an efficient, stable and flexible light energy transmission solution for the agricultural fill light system, greatly improving the overall performance and application value of the system.

[0044] For example, the fiber optic beam splitter is used to realize the light distribution from a single light source to multiple application terminals; the fiber optic beam splitter is a key component in the agricultural lighting system for realizing the light distribution from a single light source to multiple application terminals. In order to efficiently and flexibly distribute light, the device adopts the following specific design and technical features:

[0045] Multimode fiber beam splitter: Multimode fiber (MMF) is used as the transmission medium. Because of its large core diameter, it can support the simultaneous propagation of multiple modes and is suitable for the transmission of high-power lasers. The beam splitter itself is composed of a series of precisely processed optical elements, such as microlens arrays or diffraction gratings, which can evenly divide the light from a single input port into several output channels.

[0046] Adjustable splitting ratio design: An adjustable splitting ratio mechanism is designed, and users can adjust the light intensity ratio received by each output port according to actual needs to adapt to the lighting requirements of crops in different areas.

[0047] Optimized environmental adaptability: The beam splitter shell is made of weather-resistant materials, which are waterproof, dustproof and have good temperature stability. It is suitable for various complex environments such as greenhouses and plant factories. The internal components are made of materials with a wide temperature range to ensure stable operation under different climatic conditions.

[0048] Intelligent monitoring and feedback control system: It integrates optical power monitoring sensors to detect the light intensity distribution of each output port in real time, and automatically adjusts the light splitting ratio through the control system to maintain the best lighting effect. The feedback mechanism allows the light splitting strategy to be dynamically adjusted according to the changes in the crop growth stage to ensure that the lighting conditions always meet the needs of the crop.

[0049] Through the above specific implementation, the optical fiber beam splitter achieves the following significant technical effects:

[0050] Efficient light energy distribution: Multimode fiber beam splitters can evenly and efficiently distribute the energy of a single light source to multiple application terminals without significantly reducing the light intensity, greatly improving light utilization.

[0051] Stable performance: Low-loss connection technology and optimized environmental adaptability ensure that the beam splitter can still work stably in various harsh environments, reducing maintenance costs and failure rates.

[0052] Intelligent operation and maintenance: Intelligent monitoring and feedback control systems not only improve the system's automation level, but also enhance user experience, reduce the need for manual intervention, and improve overall work efficiency.

[0053] For example, the fluorescent material configured at the end is used to absorb part of the blue light and convert it into red light to match the spectral requirements of crop photosynthesis; the fluorescent material is further selected based on its excitation wavelength and fluorescence wavelength characteristics to achieve efficient blue light to red light conversion and adapt to the maximum absorption peaks of chlorophyll at 450nm and 660nm, such as Figure 6 As shown;

[0054] like Figure 4 and Figure 5 As shown, the selection and design of fluorescent materials follow the following specific implementation methods and technical features:

[0055] Selection of fluorescent materials: Excitation wavelength and emission wavelength characteristics: Select fluorescent materials with suitable excitation wavelength (close to the wavelength of blue laser) and emission wavelength (corresponding to the red light region) to ensure efficient energy conversion efficiency. Spectral matching: Prioritize fluorescent materials that can accurately match the maximum absorption peak of chlorophyll (450nm and 660nm) to maximize photosynthesis efficiency.

[0056] Specific types of fluorescent materials: Rare earth element doped phosphors: such as yttrium aluminum garnet (YAG) or silicate-based phosphors, these materials are widely used in high-power LED and laser fields due to their excellent luminescence performance and stability. Quantum dot materials: using nano-scale semiconductor particles, the emission wavelength can be precisely controlled by adjusting the particle size, suitable for application scenarios that require customized spectral output.

[0057] Packaging forms of fluorescent materials: Thin film coating: The fluorescent material is evenly coated on the surface of the optical fiber output port to form a thin and uniform fluorescent layer to ensure the effective conversion of light energy. Ceramic or glass carrier: The ceramic or glass carrier made by high-temperature sintering process not only enhances the mechanical strength of the fluorescent material, but also improves the heat resistance and chemical stability.

[0058] Optimization of light conversion efficiency: Multilayer structure design: By constructing a multilayer stacking structure of different types of fluorescent materials, the light conversion efficiency can be further improved and unnecessary energy loss can be reduced. Addition of scattering medium: The introduction of a proper amount of scattering medium, such as titanium dioxide (TiO2) particles, helps to improve light distribution, increase the optical path length, and improve the fluorescence conversion rate.

[0059] Through the above specific implementation, the fluorescent material configured at the end achieves the following significant technical effects:

[0060] High-efficiency light conversion: The selected fluorescent material can quickly and efficiently convert blue light into red light after receiving it, and is especially optimized for the maximum absorption peak of chlorophyll, which greatly improves the efficiency of photosynthesis.

[0061] Precise spectrum adjustment: Through careful selection and design of fluorescent materials, the output spectrum can be flexibly adjusted to meet the light requirements of different crop types and their growth stages, promoting healthy crop growth and increasing yields.

[0062] Enhanced light utilization: The multi-layer structure design and the use of scattering media not only improve the light conversion efficiency, but also improve the light distribution, reduce the loss of light energy during transmission, and further improve the light utilization of the entire system.

[0063] In summary, the fluorescent material configured at the end of the application is an important part of the agricultural fill light system. Its advanced design and technical application effectively solve the problems of fixed spectrum and poor flexibility in traditional fill light systems, providing a more intelligent, efficient and reliable light supplement solution for modern agricultural production, significantly improving the photosynthesis efficiency and growth quality of crops.

[0064] Exemplarily, the optical shaping system is arranged after the application end, and is used to adjust the shape of the light beam to ensure that the light is accurately irradiated on the target crop; further, the optical shaping system includes a shaping lens and an aspherical cylindrical lens, which are used to improve the light utilization rate on a single ridge of crops;

[0065] The optical shaping system is set after the application end and is a key component to ensure that the light is accurately irradiated on the target crop. In order to improve the light utilization rate on single-row crops, the system specifically includes optical components such as shaping lenses and aspherical cylindrical lenses, and adopts the following specific design and technical features:

[0066] Shaping lens: High-precision customized lens: Select optical glass materials with high transmittance and low dispersion, and customize lenses of specific shapes and sizes to achieve effective shaping of the light beam. Converging and collimating functions: Through the combination of carefully designed converging lens and plano-convex lens, the divergent light beam from the output end of the optical fiber is refocused or collimated to form a uniform and directional light spot.

[0067] Aspherical cylindrical lens:

[0068] Aspherical design: Cylindrical mirrors with aspherical design can more accurately control the propagation path of the light beam, reduce aberrations, and improve imaging quality.

[0069] Independent vertical and horizontal adjustment: allows independent adjustment of the beam shape in both vertical and horizontal directions, ensuring that the light spot can perfectly match the geometry of the crop ridge to achieve efficient coverage.

[0070] As an indispensable part of the agricultural fill light system, the optical shaping system, with its advanced design and technology application, effectively solves the problems of uneven lighting and low utilization rate existing in the traditional fill light system, providing a more intelligent, efficient and reliable lighting solution for modern agricultural production, and significantly improving the photosynthesis efficiency and growth quality of crops.

[0071] For example, a multi-wavelength optical coupling module is used to synchronously couple lasers in the blue, green, and orange-yellow bands into the same optical fiber to meet the spectrum requirements of different crops at different growth stages, such as Figure 3 To achieve efficient and flexible multi-wavelength optical transmission, the module adopts the following specific design and technical features:

[0072] Multi-wavelength light source integration:

[0073] Independent laser source: equipped with blue light (around 450nm), green light (around 530nm) and orange light (around 590nm) semiconductor lasers respectively. Each laser source has the characteristics of high efficiency and long life.

[0074] Precision control circuit: Each laser source is equipped with an independent driving circuit and control system, which can dynamically adjust the output power according to crop needs and ensure the precise supply of light of different wavelengths.

[0075] Wavelength Division Multiplexing (WDM):

[0076] Narrowband filters: Narrowband filters are used to selectively pass specific wavelengths of light, ensuring that the individual wavelengths of light can merge together without interference.

[0077] Beam combiners: Use high-quality optical beam combiners, such as dichroic mirrors or multilayer dielectric mirrors, which can effectively combine light of different wavelengths with minimal energy loss.

[0078] Efficient coupling mechanism:

[0079] Microlens array: Microlens array is used to collimate and focus the divergent beams from different laser sources to the fiber input port to reduce coupling loss.

[0080] Wavelength division multiplexing technology and efficient coupling mechanism ensure that lasers in the blue, green and orange-yellow bands can be transmitted losslessly in the same optical fiber, greatly improving the utilization rate of light energy and transmission efficiency. The combination of independent laser sources and intelligent control systems allows users to flexibly adjust the spectrum combination according to the specific needs of crop types and their growth stages, providing more accurate and personalized lighting solutions, promoting healthy crop growth and increasing yields.

[0081] Exemplarily, the electric control system is used to perform energy control at the light source and improve light utilization while simplifying wiring; the electric control system includes an ambient light intensity detector for obtaining ambient light source information and driving the laser source to adjust the output light intensity accordingly, thereby achieving precise energy control and feedback regulation.

[0082] The system includes an ambient light intensity detector, a laser source drive circuit, an integrated control system, and other parts, and adopts the following specific design and technical features:

[0083] Ambient light intensity detector:

[0084] High-sensitivity sensor: Using high-precision photosensitive elements (such as photodiodes or photoresistors) to monitor the natural light intensity in a greenhouse or plant factory in real time.

[0085] Wide dynamic range: Supports a wide measurement range from weak light to strong light, ensuring accurate acquisition of ambient light source information under different lighting conditions.

[0086] Multi-point distributed deployment: Detectors can be deployed at multiple locations to obtain more comprehensive and accurate light distribution data, providing a reliable basis for subsequent energy regulation.

[0087] Laser source driving circuit:

[0088] High-performance driver: Each laser source (blue, green, orange) is equipped with a high-performance driver that can independently control the current size to adjust the output light intensity.

[0089] Fast response characteristics: The driving circuit has fast response capability and can adjust the output power of the laser source within milliseconds to ensure timely response to environmental changes.

[0090] Overcurrent protection mechanism: Built-in overcurrent protection function prevents damage to the laser source due to unexpected situations and extends the service life of the equipment.

[0091] Integrated control system:

[0092] Central Processing Unit (CPU) / Microcontroller Unit (MCU): As the "brain" of the system, it is responsible for processing data from the ambient light intensity detector and calculating the optimal spectrum combination and light intensity setting according to the preset algorithm.

[0093] Communication interface: Supports multiple communication protocols (such as RS485, Modbus, Wi-Fi, etc.), which facilitates data exchange with external devices or management systems to achieve remote monitoring and management.

[0094] User Interface: Provides an intuitive and easy-to-use operating interface, allowing users to easily set parameters, view status and receive alarm information through the touch screen, mobile application or web platform.

[0095] In summary, in this embodiment, by using a blue light semiconductor laser light source module, a fiber coupling device, a fiber beam splitter, and a fluorescent material configured at the application end, efficient light distribution from a single light source to multiple application ends is achieved, and the ratio of blue light to red light can be flexibly adjusted according to the photosynthesis requirements of the crop. In addition, the optical shaping system arranged after the application end ensures that the light can be accurately irradiated onto the target crop, thereby greatly improving the utilization rate of light and the energy conversion efficiency. Through these technical innovations, the present invention not only simplifies the wiring design, reduces the complexity and cost of the system, but also significantly improves the effectiveness of photosynthesis and the growth quality of crops.

[0096] On the other hand, this embodiment proposes an agricultural lighting method based on optical fiber transmission and fluorescence conversion, such as Figure 2 As shown, the following steps are included:

[0097] Step 1: Ambient light intensity detection is used to obtain ambient light source information and adjust the output light intensity of the laser source accordingly to generate blue laser through a blue light semiconductor laser light source module;

[0098] Step 2: Use a fiber coupling device to introduce blue laser light into the optical fiber; use multi-wavelength optical coupling technology to allow lasers in the blue, green, and orange-yellow bands to be synchronously coupled into the same optical fiber;

[0099] Step 3: Use a fiber optic splitter to distribute light to different application ends;

[0100] Step 4: At the end of the application, part of the blue light is converted into red light through fluorescent materials, optimizing the spectrum to meet the needs of crop photosynthesis;

[0101] Step 5: Perform energy control at the light source through an electronic control system to simplify wiring and improve light utilization;

[0102] Step 6: Adjust the beam shape through the optical shaping system to ensure that the light hits the target crop.

[0103] In summary, this embodiment mainly adopts the following technical means:

[0104] (1) Using a blue semiconductor laser as the light source, the blue laser is introduced into the optical fiber through laser coupling technology; although the quantum efficiency of yellow-green light (500nm-600nm) is significantly lower than that of red and blue light, its transmittance is high. For crops, appropriately increasing the proportion of green light can help promote the photosynthesis of the leaves in the middle and lower parts of the canopy. Green light and orange-yellow band lasers can be coupled into the optical fiber synchronously to meet the wavelength requirements of different crops and different growth periods.

[0105] (2) Using the transmission characteristics of optical fiber, blue laser light is transmitted to the actual application end, and the optical fiber splitting technology is used to realize the flexible distribution of light. The actual application end includes fluorescent materials and optical shaping systems;

[0106] (3) A fluorescent material is configured at the output application end of the optical fiber, which can convert part of the blue laser into red light, thereby optimizing the energy ratio of blue light and red light according to the spectral requirements of crop photosynthesis;

[0107] (4) The electrical control system performs energy control only at the light source, making the energy of the entire supplementary lighting system controllable, simplifying wiring and improving light utilization.

[0108] Through optical fiber transmission, remote and flexible light arrangement is achieved, reducing the difficulty and cost of wiring; using fluorescent material conversion technology, the ratio of blue light to red light can be adjusted as needed to better match the photosynthesis needs of crops; the energy-controllable design makes the electrical control at the light source more centralized and convenient, improving the energy efficiency and light utilization of the entire system. A single beam can be shaped and regulated to accurately irradiate a single crop, without wasting light energy and improving utilization.

[0109] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An agricultural lighting system based on optical fiber transmission and fluorescence conversion, characterized in that: include: A blue semiconductor laser light source module, used to generate blue laser; An optical fiber coupling device, used to introduce the blue laser into the optical fiber for transmission; Fiber optic beam splitters are used to distribute light from a single light source to multiple application terminals; The fluorescent material configured at the end of the application is used to absorb part of the blue light and convert it into red light to match the spectrum requirements for crop photosynthesis; The optical shaping system is installed after the application end to adjust the beam shape to ensure that the light is accurately irradiated on the target crop.

2. The agricultural lighting system based on optical fiber transmission and fluorescence conversion according to claim 1 is characterized in that: It also includes a multi-wavelength optical coupling module, which is used to synchronously couple lasers in the blue, green, and orange-yellow light bands into the same optical fiber to meet the spectral requirements of different crops during different growth periods.

3. The agricultural lighting system based on optical fiber transmission and fluorescence conversion according to claim 1 is characterized in that: The fluorescent material is selected based on its excitation wavelength and fluorescence wavelength characteristics to achieve efficient blue light to red light conversion and adapt to the maximum absorption peaks of chlorophyll at 450nm and 660nm.

4. The agricultural lighting system based on optical fiber transmission and fluorescence conversion according to claim 2 is characterized in that: It also includes an electric control system for performing energy control at the light source and improving light utilization while simplifying wiring; The electric control system includes an ambient light intensity detector for acquiring ambient light source information, and driving the laser source to adjust the output light intensity accordingly, thereby achieving precise energy control and feedback regulation.

5. The agricultural lighting system based on optical fiber transmission and fluorescence conversion according to claim 1 is characterized in that: The optical shaping system comprises a shaping lens and an aspherical cylindrical lens, which are used to improve the light utilization rate on a single ridge of crops.

6. An agricultural lighting method based on optical fiber transmission and fluorescence conversion, comprising the system according to any one of claims 1 to 5, characterized in that: The following steps are involved: Generate blue laser light through a blue semiconductor laser light source module; A fiber coupling device is used to introduce blue laser light into the optical fiber; Use fiber optic beam splitters to distribute light to different application ends; At the end of the application, part of the blue light is converted into red light through fluorescent materials, optimizing the spectrum to meet the needs of crop photosynthesis; Energy control is performed at the light source through an electronic control system, simplifying wiring and improving light utilization; The optical shaping system adjusts the beam shape to ensure that the light is irradiated on the target crop.

7. The agricultural lighting method based on optical fiber transmission and fluorescence conversion according to claim 6 is characterized in that: Before the blue light semiconductor laser light source module generates blue light, it also includes ambient light intensity detection for obtaining ambient light source information and adjusting the output light intensity of the laser source accordingly.

8. The agricultural lighting method based on optical fiber transmission and fluorescence conversion according to claim 6 is characterized in that: The method of using a fiber coupling device to introduce a blue laser into an optical fiber comprises: The multi-wavelength optical coupling technology allows lasers in the blue, green, orange and yellow bands to be synchronously coupled into the same optical fiber.

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