LED plant light supplementing system and device and LED plant light supplementing method

Abstract

The invention is suitable for the technical field of agricultural lighting, and provides an LED plant light supplementing system, device and method, the system comprises an LED light source module, the LED light source module comprises a multi-wavelength composite LED array, and the power supply on-off and the current magnitude of an LED light emitting unit of each wavelength can be regulated and controlled respectively; the intelligent light source control module is used for regulating and controlling power supply on-off and current magnitude of LED lamp beads in the multi-wavelength composite LED array according to an illumination regulation and control program of a target plant; the illumination regulation and control program is selected or generated according to the type of the target plant and the plant growth stage, and the illumination regulation and control program at least comprises a spectrum proportion and illumination intensity; the intelligent light source control module configures an independent circuit channel for the LED light-emitting unit of each wavelength, and each circuit channel is provided with an independent drive circuit. Therefore, the light-emitting state and the light-emitting intensity of the LED lamp beads of all the wavelengths can be accurately controlled, and more accurate and efficient illumination can be achieved according to the varieties and the growth stages of plants.

Description

Technical Field

[0001] The present application belongs to the field of agricultural lighting technology, and includes an LED plant lighting system, equipment, and an LED plant lighting method. Background Art

[0002] Against the backdrop of continued global population growth, my country, as a populous nation, is increasingly integrating modern technology with crop production methods to create efficient, energy-saving, and environmentally friendly agricultural cultivation models. This has become an inevitable trend in the transformation and upgrading of my country's agriculture. Light is a core environmental factor for plant photosynthesis and growth. However, natural light is significantly affected by weather, seasons, and geographical conditions, and is subject to significant fluctuations, making it difficult to meet the stable production needs of modern facility agriculture. Therefore, artificial lighting technology has become an important means of promoting plant growth and increasing yields.

[0003] The current mainstream artificial lighting technology mainly uses traditional light sources such as metal halide lamps, incandescent lamps, and high-pressure sodium lamps. Although these can achieve basic lighting functions, they generally suffer from low light efficiency and high energy consumption, resulting in serious waste of resources. In addition, due to the high heat generation, these light sources need to be kept at a large distance from the plants, which limits space utilization. They also lack a flexible light intensity adjustment mechanism, making it difficult to adapt to the lighting needs of different growth stages. In contrast, LED light sources, with their advantages such as customizable light spectrum, excellent heat dissipation performance, and close-range illumination, have gradually replaced traditional light sources and solved problems such as single light quality and redundant wavelengths. However, most LED products on the market use manual switch control mode and lack intelligence, which restricts further improvement of lighting efficiency and crop yield potential. Summary of the Invention

[0004] The embodiments of the present application provide an LED plant light-filling system, equipment, and an LED plant light-filling method, which can solve the problem of insufficient intelligence of the LED plant light-filling system.

[0005] In a first aspect, an embodiment of the present application provides an LED plant lighting system, comprising:

[0006] The LED light source module includes a multi-wavelength composite LED array, wherein the power on / off and current of each wavelength LED light-emitting unit can be separately controlled; LED lamp beads of the same wavelength constitute the LED light-emitting unit of that wavelength;

[0007] An intelligent light source control module is used to control the power on / off and current of the LED lamp beads in the above-mentioned multi-wavelength composite LED array according to the light control program of the target plant; the above-mentioned light control program is selected or generated according to the type and growth stage of the above-mentioned target plant, and the above-mentioned light control program at least includes spectral ratio and light intensity; the above-mentioned intelligent light source control module configures an independent circuit channel for each wavelength of LED light-emitting unit, and each circuit channel is equipped with an independent drive circuit.

[0008] In a possible implementation of the first aspect, LED lamp beads of different wavelengths are combined into the multi-wavelength composite LED array according to a preset ratio;

[0009] The above-mentioned LED lamp beads with different wavelengths include at least one of the following: ultraviolet lamp beads, purple light lamp beads, blue light lamp beads, white light lamp beads, red light lamp beads and far-infrared light lamp beads.

[0010] In a possible implementation of the first aspect, the lighting control program further includes lighting time;

[0011] The above-mentioned illumination time includes at least one of daily illumination duration and illumination cycle.

[0012] In a possible implementation of the first aspect, the intelligent light source control module is associated with or has a built-in light demand database; the light demand database stores a correspondence between plant species, plant growth stages, required spectrum ratios, and required light intensities;

[0013] The light control program is generated according to the corresponding relationship between the target plants in the light demand database.

[0014] In a possible implementation of the first aspect, the intelligent light source control module is associated with or has a built-in plant detection module;

[0015] The plant detection module is used to detect the variety and / or growth stage of the target plant and transmit the detection result to the intelligent light source control module.

[0016] Exemplarily, the plant detection module is further used to detect abnormal growth status of plants;

[0017] The intelligent light source control module adjusts the current light control program according to the detected abnormal growth state.

[0018] In a possible implementation of the first aspect, the intelligent light source control module is associated with or has a built-in ambient light monitoring module;

[0019] The ambient light monitoring module is used to monitor the intensity, spectral distribution and / or illumination time of the ambient light, and transmit the monitoring results to the intelligent light source control module;

[0020] The intelligent light source control module maintains or adjusts the current lighting control program according to the monitoring results.

[0021] In a possible implementation of the first aspect, the system further includes:

[0022] The spectrum fitting and control module is used to calculate the current intensity, voltage intensity and / or pulse width modulation duty cycle of each wavelength of light based on the required relative spectrum, total photosynthetically active radiation flux and the effective radiation flux of each wavelength of light, and transmit them to the intelligent light source control module.

[0023] In a second aspect, an embodiment of the present application provides an LED plant fill light device, including: an LED plant fill light system as described in any one of the first aspects.

[0024] In a third aspect, an embodiment of the present application provides an LED plant lighting method, comprising:

[0025] Selecting or generating a light control program for the target plant according to the type and growth stage of the target plant; the light control program includes at least a spectrum ratio and light intensity;

[0026] According to the illumination control program, the power on / off and current of the LED lamp beads in the multi-wavelength composite LED array are controlled; each wavelength of the LED light-emitting unit in the multi-wavelength composite LED array is respectively configured with an independent circuit channel, and each circuit channel is equipped with an independent driving circuit to respectively control the power on / off and current of the LED light-emitting unit of each wavelength; LED lamp beads of the same wavelength constitute the LED light-emitting unit of that wavelength.

[0027] It can be understood that the beneficial effects of the second to third aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here.

[0028] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0029] The LED plant light-filling system provided in the embodiments of the present application is equipped with a multi-wavelength composite LED array. Through an intelligent light source control module, the luminous state and luminous intensity of each wavelength of the LED light-emitting unit on the lamp can be precisely controlled, thereby accurately matching the spectrum required by plants at different growth stages, achieving more efficient and higher-quality plant growth. Furthermore, the LED plant light-filling system provided in the embodiments of the present application can select or generate corresponding light control programs based on the plant variety and growth stage to meet the needs of different plants at different growth stages, promote healthy plant growth, and improve agricultural production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] Figure 1 This is a structural diagram of an LED plant lighting system provided in one embodiment of the present application;

[0032] Figure 2 This is a structural diagram of another LED plant light supplement system provided in one embodiment of the present application;

[0033] Figure 3 This is a structural diagram of another LED plant light supplement system provided in one embodiment of the present application;

[0034] Figure 4 This is a schematic diagram of a lamp bead that selects a desired wavelength according to a spectrum, provided in one embodiment of the present application. DETAILED DESCRIPTION

[0035] In the following description, specific details such as specific system structures and technologies are provided for illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obstructing the description of the present application with unnecessary details.

[0036] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0037] It will also be understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0038] As used in this specification and the appended claims, the term "if" can be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0039] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0040] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present invention. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0041] The technical solutions in the embodiments of the present application are described in detail below.

[0042] Figure 1 This is a schematic diagram of the structure of the LED plant lighting system provided by an embodiment of the present application. Figure 1 As shown, the system comprises at least an LED light source module 101 and an intelligent light source control module 102, wherein:

[0043] The LED light source module 101 includes a multi-wavelength composite LED array. The array includes multi-wavelength LED lamp beads, and the power on / off and current of each wavelength LED light-emitting unit can be adjusted separately.

[0044] In one embodiment, the multiple wavelengths correspond to the supplementary light wavelengths required by the plants, and LED lamp beads of different wavelengths are composed of a multi-wavelength composite LED array according to a preset ratio. In one example, the LED lamp beads of different wavelengths may include at least one of ultraviolet (280-400nm) lamp beads, violet (380-420nm) lamp beads, blue (440-470nm) lamp beads, white light lamp beads, red (630-680nm) lamp beads, and far-infrared (700-750nm) lamp beads. Among them, the white light lamp beads may specifically include two white light lamp beads with different color temperatures (such as 3000K and 5000K, 4000K and 6000K). By mixing and installing the two white light lamp beads with different color temperatures, the on-off status and current / voltage intensity of the lamp beads with different color temperatures can be controlled to mix the required spectrum of the white light part, which is conducive to spectrum control. In addition, uneven light will lead to inconsistent number of light quanta received by plant growth, which may cause uneven plant growth. To ensure uniform light emission, lamps of the same wavelength should be arranged in a manner that is appropriate to the shape of the lamp. For example, in a circular lamp, far-red lamps are placed on the periphery, red and blue lamps are centered, and white lamps fill the gaps. This design, through wavelength complementarity, covers the full wavelength range of plant photosynthesis (300-800nm). Alternatively, in a strip lamp, lamps of different wavelengths are arranged alternately.

[0045] In one embodiment, LED lamp beads of the same wavelength constitute an LED light-emitting unit of that wavelength, and the power on / off and current size of each wavelength LED light-emitting unit can be adjusted separately, thereby flexibly adjusting the spectrum and light intensity, thereby meeting the different spectrum requirements of plants in specific growth stages and specific growth conditions. Specifically, the LED light-emitting units of each wavelength are connected into small units using circuits, and a small unit controls multiple LED lamp beads of that wavelength. For example, the white light emitting unit is composed of 20 white light LED lamp beads, the red light emitting unit is composed of 5 red light LED lamp beads, the far-red light emitting unit is composed of 2 far-red light LED lamp beads, and the violet light emitting unit is composed of 2 violet light LED lamp beads. Furthermore, LED lamp beads of the same wavelength can be composed of at least two LED light-emitting units of that wavelength, and the power on / off and current size of each LED light-emitting unit can be adjusted separately, that is, the LED lamp beads of the same wavelength are further grouped to achieve more precise control. For example, if the multi-wavelength composite LED array includes 10 blue light (450nm) lamp beads and 12 red light (660nm) lamp beads, then according to the embodiment of the present application, the 10 blue lights can form at least one blue light LED light-emitting unit, and the 12 red light lamp beads can form at least one red light LED light-emitting unit, thereby realizing independent control of the red light lamp beads and the blue light lamp beads.

[0046] The intelligent light source control module 102 is used to control the power on / off and current of the LED lamp beads in the multi-wavelength composite LED array according to the light control program of the target plant; the light control program is selected or generated according to the plant type and plant growth stage, and the light control program includes at least the spectrum ratio and light intensity; the intelligent light source control module 102 configures an independent circuit channel for each wavelength of the LED light-emitting unit, and each circuit channel is equipped with an independent driving circuit.

[0047] Among them, the plant growth cycle usually includes growth stages such as germination (seed germination), growth period (growth and development) and maturity period (flowering and maturity). It should be understood that technicians can also divide the growth stages into different stages according to actual needs or specific plant varieties; the spectral ratio refers to the relative proportion of light energy of different wavelengths. For example, the photosynthetic photon flux ratio of red light and blue light is 7:3. For the convenience of description, it is simplified to a red light to blue light ratio of 7:3.

[0048] In one embodiment, the intelligent light source control module 102 is based on multi-channel output control technology. It controls the current of different channels through multi-channel output power drive to achieve the on-off state and light intensity adjustment of the corresponding lamp beads of different colors, thereby achieving the control effect of mixed spectrum changes. Multi-channel output control technology achieves precise spectrum control through three levels of hardware branching, independent driving, and dynamic feedback, ensuring the accuracy and speed of control, and making the power drive have higher efficiency and a wider dimming range. In one example, the module allocates LED lamp beads of different wavelengths to independent circuit channels (such as channel 1 drives red light 660nm, channel 2 drives blue light 450nm), and each circuit channel is configured with a constant current source or PWM (Pulse Width Modulation, pulse width modulation) modulator to ensure that the current of each color LED does not interfere with each other. Specifically, when performing light control, the dimming method can adopt 0-10V dimming, PWM dimming, DALI dimming, digital dimming, etc.

[0049] In one embodiment, the intelligent light source control module 102 can dynamically adjust each branch driving circuit through an MCU (Microcontroller Unit) or a PLC (Programmable Logic Controller) to achieve closed-loop control of light intensity regulation and spectrum fitting.

[0050] In one embodiment, the intelligent light source control module 102 can directly control the light of the target plant according to a preset light control program. In another embodiment, the intelligent light source control module 102 can generate or select a light control program according to relevant data of the target plant to control the light. In one example, the intelligent light source control module 102 is associated with or has a built-in light demand database, which stores "plant species-growth stage-required spectrum ratio-required light intensity" (such as tomato-growth stage-red and blue light 7:3-light intensity 200μmol / m 2 The intelligent light source control module 102 stores parameter data such as light spectrum ratios and light intensities required by different plants at different growth stages (e.g., germination, growth, flowering, and fruiting). Based on the target plant species and growth stage, the intelligent light source control module 102 searches the light requirement database for corresponding data and generates a light control program based on this data.

[0051] In one embodiment, the light control program may also include light exposure time, such as daily light duration, light cycle, etc. For example, the light control program may indicate 16 hours of light exposure per day, of which the first 8 hours are in high blue light mode (the proportion of blue light is higher than red light), and the last 8 hours are in high red light mode (the proportion of red light is higher than blue light). Therefore, the LED plant light supplement system provided by this application supports any spectral ratio combination, can adapt to the entire growth cycle of plants, and can reduce ineffective energy consumption through on-demand adjustment.

[0052] In order to further improve the lighting effect and flexibility of the LED plant lighting system provided by this application, this application provides another structural diagram of the LED plant lighting system. Figure 2 As shown, the LED plant light supplement system includes, in addition to the LED light source module 101 and the intelligent light source control module 102, a plant detection module 201 and an ambient light monitoring module 202. Detailed description is as follows:

[0053] In one embodiment, the intelligent light source control module 102 is associated with (eg Figure 2 As shown) or a built-in plant detection module 201, the plant detection module 201 is used to detect the variety and / or growth stage of the plant, and transmit the detection results to the intelligent light source control module 102. Based on the plant detection module 201, the growth stage of the plant can be detected in real time or periodically, so that the light control program can be adjusted in time in response to the switching of the plant growth stage. Exemplarily, when the plant detection module 201 detects that the target plant switches from the budding stage to the growth stage, the intelligent light source control module 102 can be adjusted to the light control program corresponding to the growth stage according to the detection result. The switching of the light control program may be reflected in reducing the blue light ratio from 70% to 30% and increasing the red light ratio from 30% to 70%. Specifically, the plant detection module 201 can be configured with an image recognition module for identifying the growth stage of the plant based on the collected plant image. More specifically, the image recognition module is associated with a plant growth stage feature database, which stores feature images of different varieties of plants at different growth stages. By comparing the collected plant images with the feature images in the database, the plant growth stage can be determined. For example, after identifying that a seedling has five true leaves, it can be determined that it has reached the growth stage. Furthermore, the plant detection module 201 can also be used to detect abnormal growth conditions of plants (such as yellowing leaves and leggy seedlings). The intelligent light source control module 102 can adjust the current light control program according to the abnormal growth condition, such as dynamically adjusting the red light ratio from 80% to 50%, and reducing the light intensity to 280μmol / m 2Specifically, the plant detection module 201 can detect whether a plant is in an abnormal growth state through the configured image recognition module. It should also be noted that when the intelligent light source control module 102 has a built-in plant detection module 201, the plant detection module 201 can transmit the detection results to the central processing unit of the intelligent light source control module 102 for processing.

[0054] In one embodiment, the intelligent light source control module 102 is associated with (eg Figure 2 As shown) or has a built-in ambient light monitoring module 202, which is used to monitor the intensity, spectral distribution and / or illumination time of the ambient light, and transmit the monitoring results to the intelligent light source control module 102, so that the intelligent light source control module 102 can flexibly adjust the lighting control program according to the ambient light data. Specifically, after the ambient light monitoring module 202 transmits the monitoring results to the intelligent light source control module 102, if there is no abnormality in the ambient light data, the intelligent light source control module 102 will give priority to executing the current lighting control program; when the ambient light data deviates greatly from the current lighting control program, the intelligent light source control module 102 may give priority to adjusting the lighting control program according to the ambient light data (such as adjusting the spectral ratio and light intensity), or may fuse the target value of the preset program with the real-time monitoring data to generate a comprehensive adjustment plan. More specifically, in the absence of ambient light, the preset lighting control program can be directly started; in the presence of ambient light, comprehensive adjustment is performed based on the ambient light intensity and spectrum. For example, if the ambient light is weak in the morning and afternoon, the preset light control program can be used; if the ambient light is strong at noon, the light emitted by the preset light control program may be too strong after combining with the ambient light and needs to be adjusted. 2 / s, the proportion of red light in the spectrum is low, and the monitoring results collected in the form of analog signals (such as light intensity, spectral data) are converted into digital signals through the analog-to-digital conversion module (ADC) and uploaded to the intelligent light source control module 102. In the absence of real-time data abnormalities, the intelligent light source control module 102 gives priority to executing the current light control program; for example, if the detected natural light intensity is low, the intelligent light source control module 102 can automatically compensate it to the target light intensity in the current light control program. Exemplarily, the ambient light monitoring module 202 can be a photosensor (such as a photodiode or a spectrometer). Through the fusion control strategy of preset programs and real-time feedback, the LED plant light supplement system provided in this application can achieve autonomous optimization of light environment parameters, significantly reduce ineffective energy consumption and improve space utilization. It should also be noted that when the intelligent light source control module 102 has a built-in ambient light monitoring module 202, the ambient light monitoring module 202 can transmit the detection results to the central processor of the intelligent light source control module 102 for processing.

[0055] Figure 3 This is a structural diagram of another LED plant light supplement system provided in one embodiment of the present application. Figure 3 As shown, the system includes an LED light source module 101 and an intelligent light source control module 102, wherein the intelligent light source control module 102 further includes a master control module, which is connected to a PC, a panel, a sensor, and multiple slave control modules. Specifically, the PC has the same functions as the central processing unit mentioned above, and a terminal device such as a mobile phone can also be used to replace the PC to achieve the same functions; the panel is used to interact with the user (such as receiving the user's input of lighting requirements and outputting the current light intensity); the sensor corresponds to the plant detection module 201 and the ambient light monitoring module 202 in the above embodiment; each slave control module is connected to a drive circuit for independently controlling one or more LED lamp beads. Figure 3 The embodiment mainly shows the configuration of the plant detection module 201 and the ambient light monitoring module 202 in the intelligent light source control module 102. For the specific function implementation, please refer to the above embodiments.

[0056] Furthermore, the LED plant lighting system of the present application can also provide a remote monitoring module, which is configured on the user side. Based on this module, the user can remotely monitor the growth status, lighting conditions and other information of the plant to achieve refined management.

[0057] This completes the application Figure 1 、 Figure 2 and Figure 3 Description of the system shown.

[0058] Whether it's visible light, photosynthetically active radiation, or ultraviolet (UV-A, UV-B, and near-infrared) light, all have a significant impact on plant growth and development. When designing LED spectrums for plant lighting, it's important to fully consider the different growth stages and diverse needs of plants to ensure optimal growth outcomes. Generally, during the budding stage, plants tend to require a higher proportion of blue and violet light. These spectral components effectively promote seed germination and the robust growth of seedlings. Once they enter the growing season, plants require a higher proportion of red and far-infrared light to accelerate stem elongation, leaf expansion, and overall plant development. During the mature stage, red and far-infrared light also play a crucial role, promoting flowering and fruit ripening. However, existing plant lighting fixtures have a fixed combination of lamp types and spatial layouts, making it difficult to flexibly adjust the light spectrum. These fixtures can generally only meet the needs of plants at specific growth stages, limiting the production of high-quality fruits and vegetables. In response to this situation, the LED plant supplementary lighting system provided in the embodiment of the present application is provided with a multi-wavelength composite LED array. Through the intelligent light source control module, the luminous state and luminous intensity of the LED light-emitting unit of each wavelength on the lamp can be accurately controlled, thereby accurately matching the spectrum required by plants at different growth stages, and achieving more efficient and higher-quality plant growth.

[0059] In addition, the LED plant lighting system provided in the embodiment of the present application can preset the required spectral composition and light intensity parameters according to the plant variety and growth stage, and dynamically adjust the lighting based on the lighting control program and real-time monitoring data to adapt to the needs of different plants in different growth stages and different environments, promote healthy plant growth, improve agricultural production efficiency, and reduce energy consumption and carbon emissions.

[0060] The LED plant light supplement system provided by this application is further described below with reference to two embodiments.

[0061] Example 1: Light regulation during tomato growth period

[0062] Target plant species: Tomato.

[0063] Growth stage of target plants: Vegetative stage.

[0064] Light control program: The red to blue light ratio during the tomato growth period is 7:3, and the light intensity is 200 μmol / m 2 According to the light regulation program, the intelligent light source control module controls the LED light source module to provide the spectrum ratio and light intensity required by the tomato growth period.

[0065] Real-time monitoring data: The ambient light monitoring module (photosensitive sensor) detects that the natural light intensity is 120μmol / m 2 / s, the proportion of red light is lower.

[0066] Control process: The intelligent light source control module automatically turns on the LED lamp beads of the LED light source module, increases the PWM duty cycle of the red light channel to 70%, increases the PWM duty cycle of the blue light channel to 30%, and compensates the total light intensity to 200μmol / m 2 / s.

[0067] Example 2: Light regulation of abnormal plant growth during flowering

[0068] Light regulation program: The red light ratio during the flowering period of the plant is 80%, and the light intensity is 250μmol / m 2 / s.

[0069] Real-time detection data: The image recognition module of the plant detection module identifies that the plant has yellowing leaves based on the plant leaf image and determines that the cause is insufficient red light.

[0070] Control process: The intelligent light source control module automatically increases the PWM duty cycle of the red light channel to 90% and increases the light intensity to 280μmol / m 2 / s until the plant growth status returns to normal.

[0071] Example 3: Light regulation of abnormal plant growth during the growth period

[0072] Real-time detection data: The image recognition module of the plant detection module identifies plants with excessive seedling growth based on plant images. It should be noted that excessive seedling growth refers to the abnormally vigorous development of stems and leaves during plant growth due to uncoordinated environmental conditions. This is manifested by abnormally increased plant height, thin stems, elongated internodes, sparse, large, and thin leaves, and a loss of overall coordination. To address this issue, appropriately increasing the amount of ultraviolet light, red light, or far-red light, and increasing the duration of exposure, can promote the accumulation of effective substances in the plant body and inhibit excessive growth.

[0073] Regulation process: The intelligent light source control module automatically increases the proportion of ultraviolet light from 5% to 10%, the proportion of far-red light from 5% to 10%, and the proportion of red light from 50% to 70%, and extends the irradiation time from 10 hours a day to 12 hours until the plant growth state returns to normal.

[0074] Generally speaking, the spectral formulas in the database (i.e., the lamp beads and serial and parallel modes required for the spectrum) can be directly adjusted and used. In case there is no spectral formula or the spectrum needs to be modified, the LED plant light-filling system provided by the embodiment of the present application may also include a spectral fitting and control module, which is used to calculate the spectral distribution required by the target plant based on the needs of the current growth stage of the plant, according to the relative spectrum diagram (a curve diagram with wavelength (nm) as the horizontal axis and relative light intensity (%) as the vertical axis, indicating the spectral distribution required by the plant), total photosynthetic active radiation flux (PPF, the total energy of photosynthetic active radiation per unit time (μmol / m 2 / s)) and the PPF of each wavelength of light (the photosynthetically active radiation energy in each wavelength range (such as red light, blue light, far-red light)), calculate the current intensity, voltage intensity and / or PWM duty cycle of each wavelength of light and transmit it to the intelligent light source control module. The spectral fitting and control module first inputs the absolute spectral data and voltage of each wavelength lamp bead at different currents. Generally speaking, the absolute spectral data and voltage of the existing lamp beads on the lamp at different currents have been imported into the spectral fitting and control module. If you want to replace the lamp beads on the lamp with a different type from the lamp beads in the spectral fitting and control module, you need to re-measure the absolute spectral data and voltage of the replaced lamp beads at different currents. After the above data of the lamp beads are imported, the fitting operation begins. Determine the power used by the entire lamp, the power supply voltage, the total photosynthetically active radiation flux of the entire lamp and the effective radiation flux of each band (these values are used as reference results and are not input calculation parameters). Figure 4 This is a schematic diagram of a lamp bead that selects the required wavelength according to the spectrum provided by an embodiment of the present application. Figure 4 As shown, the input: lamp current, number of series and parallel connections, power efficiency, thermal efficiency and lens transmittance; the output: fitting spectrum, whole lamp power, voltage, total photosynthetically active radiation flux (PPF) and photosynthetically active radiation flux (PPF) ratio of each band, and form a pie distribution diagram.

[0075] Specifically, the module can convert the relative spectrum into the ratio of each wavelength of light, calculate the PPF value of each wavelength of light according to the total PPF and the ratio of each wavelength of light, generate the target spectrum curve according to the input spectrum requirement, calculate the total light intensity requirement of the LED lamp beads according to the total PPF value, and calculate the current intensity, voltage intensity and / or PWM duty cycle of each wavelength of light according to the PPF value of each wavelength of light. For example, the PPF of red light is 140μmol / m 2 / s, the spectrum fitting and control module can calculate the PWM duty cycle of the red light channel to be 70%. The intelligent light source control module can generate multiple PWM signals based on the PWM duty cycle of each wavelength of light calculated by the spectrum fitting and control module, or adjust the current intensity of each channel through the constant current drive module based on the current intensity of each wavelength of light calculated by the spectrum fitting and control module, thereby adjusting the proportion of each wavelength of light through multi-channel output control technology.

[0076] Furthermore, the spectrum fitting and control module can combine the spectrum fitting software with the type and number of lamp beads configured in the current LED light source module to calculate the optimal LED lamp bead type, driving current and configuration method, so that the fitted relative spectrum graph is consistent with the input relative spectrum. Figure 1 The spectrum fitting software's database pre-stores at least the PPF values and absolute spectrum data for each wavelength of the LED light source module at each current. When spectrum adjustment is required, the desired spectrum is selected from the database. The software then calculates the required lamp type, series and parallel configuration, and drive current through fitting, and then outputs these parameters to the intelligent light source control module.

[0077] For example, the relevant calculation process of the spectrum fitting and control module is as follows:

[0078] Input data includes the target relative spectrum (a curve plotting wavelength (nm) against relative light intensity (%)), the total PPF requirement, and the PPF distribution for each wavelength. Parameters such as color temperature and color rendering index (CRI) can also be included. The spectrum fitting software's raw database contains pre-stored absolute spectrum data (a curve plotting wavelength (nm) against relative light intensity (%)), current-PPF relationships, and current-voltage relationships for various LED models.

[0079] Calculation steps:

[0080] First, select the lamp model and current. For example, select the lamp model (such as Red660, Blue450) and enter the driving current (such as 150mA).

[0081] Then enter the number of series and parallel connections. For example, enter the number of series and parallel connections for each wavelength spectrum light bead.

[0082] The spectrum fitting software can extract absolute spectrum data from the raw data module according to the input lamp bead model and current. The absolute spectrum data of each lamp bead are superimposed in proportion to generate a fitted relative spectrum graph. The absolute spectrum data of each model lamp bead under the current is calculated by the spectrum fitting and control module (the PPF under the absolute spectrum data is calculated by formula (1)) to obtain the total PPF and the PPF of each wavelength of light. The spectral study of plant photosynthesis is essentially an analysis of the distribution form and quantity (light quality) of light radiation power or photons with wavelength as the definition domain, which is achieved through spectral data and spectrum graphs. Photosynthetic Photon Flux (PPF, unit: μmol / s) indicates how many photosynthetic photons a plant growth lamp can emit in one second (within the range of 400-700nm). When designing and formulating the spectral form of the plant lamp, the PPF is already determined. The calculation formula of PPF is as follows:

[0083]

[0084] Where, hcNA = 119.8 W·s·nm·μmol-1;

[0085] c is the speed of light (c = 3 × 108 m·s-1);

[0086] h is Planck's constant (h = 6.63 × 10-34 W·s);

[0087] NA is Avogadro's constant (1 μmol·s-1·m-1=6.0221017 photons·s-1·m-1).

[0088] If the total PPF does not reach the target, the current can be adjusted or the number of series and parallel lamp beads can be increased, provided that the fitted relative spectrum is similar to the input target relative spectrum (such as error <5%).

[0089] The LED plant light supplement system of the present application can realize customized plant light solutions. First, the lamp bead model, input lamp bead current, and number of series and parallel connections (all variables) are selected to obtain a specially customized relative spectrum and meet the PPF requirements of the entire lamp. During the initial lamp confirmation stage or when replacing the lamp and lamp bead, the lamp bead model, input lamp bead current, and number of series and parallel connections are manually input (such as through a computer terminal). When the lamp has been determined, that is, the lamp bead model and number of series and parallel connections are fixed, and there is only one parameter (current), the computer can automatically calculate and adjust the current to meet the spectrum and light intensity requirements. When a customized plant light solution is not required, a commonly used spectrum configuration can be set, such as the solar spectrum. The solar spectrum and light intensity (similar to the PPF value) are different in each time period. The spectrum fitting and control module can simulate solar lighting conditions based on the solar spectrum and light intensity at each time in each region (obtained through external sensors and optical detectors). After calculation, the spectrum and light intensity of the entire lamp are adjusted by the intelligent light source control module. Once the configuration is set, the intelligent light source control module can automatically adjust the light control program based on the signals obtained by the external sensors and optical detectors.

[0090] Based on the same concept as the LED plant light-filling system provided in the embodiments of this application, this application also provides an LED plant light-filling device, which may include the LED plant light-filling system provided in any embodiment of this application. Furthermore, the device may also include a device housing and other basic structures, which will not be further described in this application.

[0091] Based on the same concept as the LED plant light supplement system provided in the embodiment of the present application, the present application also provides an LED plant light supplement method, specifically comprising:

[0092] Select or generate a light control program for the target plant according to the type and growth stage of the target plant; the light control program at least includes a spectrum ratio and light intensity;

[0093] According to the light control program, the power on and off and current size of the LED lamp beads in the multi-wavelength composite LED array are controlled; each wavelength LED light-emitting unit in the multi-wavelength composite LED array is respectively configured with an independent circuit channel, and each circuit channel is equipped with an independent driving circuit to separately control the power on and off and current size of the LED light-emitting unit of each wavelength.

[0094] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0095] It should be noted that since the above method is based on the same concept as the system embodiment of the present application, its specific functions and technical effects can be found in the system embodiment section and will not be repeated here.

[0096] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0097] An embodiment of the present application also provides a computer device, which includes: at least one processor, a memory, and a computer program stored in the memory and executable on the at least one processor, wherein the processor implements the steps of the above method embodiment when executing the computer program.

[0098] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the above method embodiment can be implemented.

[0099] An embodiment of the present application provides a computer program product. When the computer program product is run on a computer device, the computer device can implement the steps in the above method embodiment when executing the computer program product.

[0100] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0101] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0102] In the embodiments provided in this application, it should be understood that the disclosed apparatus / computer equipment and methods can be implemented in other ways. For example, the apparatus / computer equipment embodiments described above are merely schematic. For example, the division of the modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of the apparatus or unit, which can be electrical, mechanical or other forms.

[0103] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0104] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. An LED plant lighting system, characterized in that: include: The LED light source module includes a multi-wavelength composite LED array, wherein the power on / off and current of each wavelength LED light-emitting unit can be separately controlled; LED lamp beads of the same wavelength constitute the LED light-emitting unit of that wavelength; An intelligent light source control module is configured to control the power on / off and current of the LED light-emitting unit according to a light control program for the target plant; the light control program is selected or generated based on the type and growth stage of the target plant, and the light control program includes at least spectral ratio and light intensity; the intelligent light source control module configures an independent circuit channel for each wavelength of the LED light-emitting unit, and each circuit channel is equipped with an independent drive circuit.

2. The system according to claim 1, wherein LED lamp beads of different wavelengths are combined into the multi-wavelength composite LED array according to a preset ratio; The LED lamp beads of different wavelengths include at least one of the following: ultraviolet lamp beads, purple light lamp beads, blue light lamp beads, white light lamp beads, red light lamp beads and far red light lamp beads.

3. The system according to claim 1, wherein: The lighting control program also includes lighting time; The illumination time includes at least one of daily illumination duration and illumination cycle.

4. The system according to claim 1, wherein: The intelligent light source control module is associated with or built-in with a light demand database; the light demand database stores the correspondence between plant species, plant growth stages, required spectrum ratios and required light intensities; The light control program is generated according to the corresponding relationship between the target plants in the light demand database.

5. The system according to claim 1, wherein: The intelligent light source control module is associated with or has a built-in plant detection module; The plant detection module is used to detect the variety and / or growth stage of the target plant and transmit the detection result to the intelligent light source control module.

6. The system according to claim 5, wherein: The plant detection module is also used to detect abnormal growth status of plants; The intelligent light source control module adjusts the current light regulation program according to the detected abnormal growth state.

7. The system according to any one of claims 1 to 6, wherein: The intelligent light source control module is associated with or has a built-in ambient light monitoring module; The ambient light monitoring module is used to monitor the intensity, spectral distribution and / or illumination time of the ambient light, and transmit the monitoring results to the intelligent light source control module; The intelligent light source control module maintains or adjusts the current lighting control program according to the monitoring result.

8. The system according to any one of claims 1 to 6, wherein: The system further comprises: The spectrum fitting and control module is used to calculate the current intensity, voltage intensity and / or pulse width modulation duty cycle of each wavelength LED light-emitting unit based on the required relative spectrum diagram, total photosynthetically active radiation flux and the effective radiation flux of each wavelength of light, and transmit them to the intelligent light source control module.

9. An LED plant lighting device, characterized in that: It comprises the LED plant light supplement system as described in any one of claims 1 to 8.

10. A LED plant lighting method, characterized in that: include: Selecting or generating a light control program for the target plant according to the type and growth stage of the target plant; The lighting control program at least includes spectrum ratio and lighting intensity; According to the illumination control program, the power on / off and current of the LED lamp beads in the multi-wavelength composite LED array are controlled; each wavelength of the LED light-emitting unit in the multi-wavelength composite LED array is respectively configured with an independent circuit channel, and each circuit channel is equipped with an independent driving circuit to respectively control the power on / off and current of the LED light-emitting unit of each wavelength; LED lamp beads of the same wavelength constitute the LED light-emitting unit of that wavelength.

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