PeLED light source module, plant growth lamp and spectrum control method thereof

Abstract

The invention discloses a PeLED light source module, a plant growth lamp and a spectrum control method thereof, the PeLED light source module comprises a plurality of PeLED light source modules, and each PeLED light source module comprises a light emitting layer, a photosensitive layer and a driving circuit; the driving circuit comprises a transimpedance amplifier, a comparator and an MOSFET which are connected in sequence, the driving circuit receives light current generated by the photosensitive layer and converts the light current into a voltage signal through the transimpedance amplifier to be output, the output end of the transimpedance amplifier is connected with the inverted input end of the comparator, the in-phase input end of the comparator is connected with a reference voltage, and the reference voltage is connected with the MOSFET. When the voltage of the inverted input end of the comparator is higher than the reference voltage of the in-phase input end, the comparator outputs a low level, otherwise, the comparator outputs a high level, the output end of the comparator is connected with a grid electrode of the MOSFET, the MOSFET is used for a switching circuit of the light-emitting layer, when the comparator outputs the high level, the MOSFET is conducted, the light-emitting layer supplements light, and when the comparator outputs the low level, the MOSFET is turned off, and the light-emitting layer does not supplement light.

Description

Technical Field

[0001] The present invention relates to the technical field of light source control, and in particular to a PeLED light source module, a plant growth lamp and a spectrum control method thereof. Background Art

[0002] Traditional LED grow lights typically require external light sensors. However, these sensors have low spectral capture accuracy, which impacts the grow light's workflow. This leads to large spectral matching errors when controlling light emission based on external light. Furthermore, traditional silicon-based photodiodes cannot distinguish between photosynthetically active wavelengths, such as 660nm red light and 730nm far-infrared. Therefore, in the field of grow lights, achieving accurate, real-time matching of ambient light and supplemental light spectra is a key issue for those skilled in the art. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a PeLED light source module, a plant growth lamp and a spectrum control method thereof. By setting a light-emitting layer and a photosensitive layer based on perovskite material in the light source module, the ambient light spectrum can be accurately captured and the changes in ambient light can be responded to in real time.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a PeLED light source module on the one hand. In the technical solution of the present invention, the PeLED light source module includes a plurality of PeLED light source modules distributed in an array, and the PeLED light source module includes a light-emitting layer, a photosensitive layer and a driving circuit; the photosensitive layer is used to receive external natural light to generate photocurrent; the driving circuit drives the light-emitting layer to perform fill light according to the size of the photocurrent generated by the photosensitive layer.

[0005] Furthermore, in the technical solution of the present invention, the driving circuit includes a transimpedance amplifier, a comparator and a MOSFET connected in sequence. The driving circuit receives the photocurrent generated by the photosensitive layer and converts it into a voltage signal output through the transimpedance amplifier. The output end of the transimpedance amplifier is connected to the inverting input end of the comparator, that is, the transimpedance amplifier outputs the voltage converted from the photocurrent to the inverting input end of the comparator. The non-inverting input end of the comparator is connected to a reference voltage. When the voltage of the inverting input end of the comparator is higher than the reference voltage of the non-inverting input end, the comparator outputs a low level. When the voltage of the inverting input end of the comparator is lower than the reference voltage of the non-inverting input end, the comparator outputs a high level. The output end of the comparator is connected to the gate of the MOSFET. The MOSFET is used for the switching circuit of the light-emitting layer. When the comparator outputs a high level, the MOSFET is turned on and the light-emitting layer is supplemented with light. When the comparator outputs a low level, the MOSFET is turned off and the light-emitting layer is not supplemented with light.

[0006] Furthermore, in the technical solution of the present invention, the light-emitting layer includes multiple perovskite light-emitting units, and the multiple perovskite light-emitting units are respectively used to emit light of different wavelengths required for plant growth, that is, each perovskite light-emitting unit emits light of different wavelengths.

[0007] Furthermore, in the technical solution of the present invention, a corresponding perovskite photosensitive unit is provided in the photosensitive layer for each perovskite light-emitting unit in the light-emitting layer, and the perovskite photosensitive unit is used to receive natural light and generate photocurrent. The wavelength of light received by the perovskite photosensitive unit is the same as the wavelength of light emitted by its corresponding perovskite light-emitting unit, and the perovskite band gap width of the perovskite photosensitive unit satisfies the relationship:

[0008] ,in is represented by the perovskite band gap width in the perovskite photosensitive unit, It represents the wavelength of light received by the perovskite photosensitive unit.

[0009] Furthermore, in the technical solution of the present invention, there are multiple groups of driving circuits in the PeLED light source module, which are respectively used to receive photocurrents generated by different perovskite photosensitive units and drive the perovskite light-emitting units corresponding to the perovskite photosensitive units to provide fill light.

[0010] Furthermore, in the technical solution of the present invention, the driving circuit in the PeLED light source module has different fill light driving conditions for light of different wavelengths, that is, the reference voltage of the comparator's non-inverting input terminal is different. At the same time, different PeLED light source modules have different fill light driving conditions for light of the same wavelength, that is, different PeLED light source modules have different reference voltages in the fill light driving circuit for light of the same wavelength. The specific setting of the fill light driving conditions of multiple PeLED light source modules for light of different wavelengths includes the following steps:

[0011] Under single natural light irradiation, the different wavelengths of light required for plant growth are all provided by natural light. The critical natural light intensity of each wavelength of light that meets the growth requirements of plants is determined in turn, that is, the critical natural light intensity corresponding to different wavelengths of light is different;

[0012] Obtain the photocurrent generated by the perovskite photosensitive unit corresponding to the wavelength of light at its corresponding critical natural light intensity, and the voltage value converted by the transimpedance amplifier. ,in Expressed as wavelength The light is converted into the output voltage value by the transimpedance amplifier at its critical natural light intensity;

[0013] Get the number of PeLED light source modules in the PeLED light source module , based on the voltage value and quantity Set the fill light driving conditions: Set A PeLED light source module has a wavelength of The reference voltages in the light fill driving circuit are .

[0014] On the other hand, the present invention also provides a plant growth lamp, which adopts a PeLED light source module according to the above description, and also includes a lampshade and a mounting bracket. In the PeLED light source module, when the PeLED light source module is installed, the photosensitive layer is located on the upper end surface of the plant growth lamp, and the light-emitting layer is located on the lower end surface of the plant growth lamp.

[0015] Furthermore, the present invention also provides a spectrum control method, which is used in the plant growth lamp described above. The spectrum control method includes:

[0016] When the intensity of natural light increases, the intensity of light of different wavelengths provided by natural light increases, the photocurrent generated by the perovskite photosensitive unit in the photosensitive layer increases, the photocurrent input to the driving circuit increases, and the voltage converted by the transimpedance amplifier increases. When the intensity of natural light gradually increases, the photocurrent and the converted voltage also gradually increase. For light of different wavelengths, when the natural light intensity increases to exceed the critical natural light intensity, the photocurrent generated and the converted voltage of the perovskite photosensitive unit corresponding to the received wavelength exceed the reference voltage of all PeLED light source modules in the PeLED light source module, that is, the comparators in the driving circuits of all PeLED light source modules corresponding to the light of this wavelength output a low level, that is, the MOSFET is turned off, and the light-emitting layer does not supplement light. Similarly, when the natural light intensity increases to the critical natural light intensity, the PeLED light source modules in the PeLED light source module gradually reduce the supplement light.

[0017] When the intensity of natural light decreases, the intensity of light of different wavelengths provided by natural light decreases, the photocurrent generated by the perovskite photosensitive unit in the photosensitive layer decreases, the photocurrent input to the driving circuit decreases, and the voltage converted by the transimpedance amplifier decreases. When the intensity of natural light gradually decreases, the photocurrent and the converted voltage also gradually decrease. For light of different wavelengths, when the natural light intensity decreases to within the critical natural light intensity, the photocurrent and the converted voltage generated by the perovskite photosensitive unit corresponding to the received wavelength are lower than the reference voltage of some PeLED light source modules in the PeLED light source module, that is, the comparator in the driving circuit of some PeLED light source modules corresponding to the light of this wavelength outputs a high level, the MOSFET is turned on, and part of the light-emitting layer is supplemented with light. Similarly, when the natural light intensity is within the critical natural light intensity and gradually decreases, the PeLED light source modules in the PeLED light source module gradually increase the supplementary light.

[0018] Beneficial effect: In summary, the present invention provides a PeLED light source module, a plant growth lamp and a spectrum control method thereof, specifically relating to a PeLED light source module that utilizes perovskite materials to realize real-time perception of natural light spectrum and integrated luminescence, and a PeLED light source module and a plant growth lamp based on the module, which are suitable for greenhouse lighting and vertical agriculture scenarios; in the technical solution of the present invention, by arranging a light-emitting layer and a photosensitive layer based on perovskite materials in the light source module, relying on the wide-spectrum tunability of the perovskite material, the bandgap width of the photosensitive layer perovskite material is adjusted according to the wavelength of light required for plant growth, and the spectrum regulation ability of the perovskite material is utilized to achieve accurate capture of the ambient light spectrum, and at the same time, based on the photoelectric effect of the perovskite, that is, the photoelectric characteristics of the photosensitive current, it responds to changes in ambient light in real time, and further uses the electroluminescent characteristics of the perovskite to supplement the light-emitting layer with natural light. Compared with traditional LED plant growth lamps, the present invention is more sensitive to spectral changes of natural light, and the supplementary light wavelength provided is more accurate.

[0019] Other features and advantages of the present invention will be set forth in the description that follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 A schematic diagram of a plant growth lamp according to an embodiment of the present invention Figure 1 ;

[0022] Figure 2 A schematic diagram of a plant growth lamp according to an embodiment of the present invention Figure 2 ;

[0023] Figure 3 For Figure 1 A schematic diagram of the structure of the middle region X;

[0024] Figure 4 For Figure 2 A schematic diagram of the structure of the middle region Y is enlarged;

[0025] Figure 5 2 is a schematic structural diagram of a PeLED light source module according to an embodiment of the present invention;

[0026] Figure 6 is a circuit schematic diagram of a driving circuit according to an embodiment of the present invention;

[0027] In the figure: A, plant growth lamp; A01, light source module; A01-1, light source module; A01-1a, photosensitive layer; A01-1b, light-emitting layer; A02, lampshade; A03, mounting bracket. DETAILED DESCRIPTION

[0028] In order to make the objects, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments; based on the embodiments of 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.

[0029] The core of the embodiments of the present invention is to provide a PeLED light source module, a plant growth lamp and a spectrum control method thereof. By setting a light-emitting layer and a photosensitive layer based on perovskite materials in the light source module, accurate capture of the ambient light spectrum is achieved and real-time response to changes in ambient light is achieved.

[0030] In this embodiment, Figure 1 and Figure 2 FIG. 1 is a structural diagram of a plant growth lamp including a PeLED light source module according to an embodiment of the present invention. Figure 1 and Figure 2 As shown, the plant growth lamp A includes a PeLED light source module A01, a lampshade A02 and a mounting bracket A03. Figure 5 A PeLED light source module structure diagram according to an embodiment of the present invention, please continue to refer to Figure 1 、 Figure 2 and Figure 5 The PeLED light source module A01 includes a plurality of PeLED light source modules A01-1 distributed in an array.

[0031] Specifically, in this embodiment, Figure 3 For Figure 1 A schematic diagram of the structure of the middle region X. Figure 4 For Figure 2 The enlarged schematic diagram of the structure of the middle area Y is as follows: Figure 3 and Figure 4 As shown, the PeLED light source module A01-1 includes a light-emitting layer A01-1a, a photosensitive layer A01-1b that receives external natural light to generate photocurrent, and a driving circuit that drives the light-emitting layer A01-1a to provide fill light according to the size of the photocurrent generated by the photosensitive layer A01-1b.

[0032] in, Figure 6 FIG. 1 is a circuit schematic diagram of a driving circuit according to an embodiment of the present invention, Figure 6As shown, in this embodiment, the driving circuit includes a transimpedance amplifier U1, a comparator U2 and a MOSFET (i.e., Q1 in the figure) connected in sequence, and the driving circuit receives the photocurrent generated by the photosensitive layer A01-1a. The photocurrent is converted into a voltage signal output through the transimpedance amplifier U1. The output end of the transimpedance amplifier U1 is connected to the inverting input end (i.e., the negative input end) of the comparator U2. That is, the transimpedance amplifier U1 converts the photocurrent into a voltage signal. The converted voltage is output to the inverting input of the comparator U2, and the non-inverting input (i.e., positive input) of the comparator U2 is connected to a reference voltage. When the voltage at the inverting input of comparator U2 is higher than the reference voltage at the non-inverting input, When the comparator U2 outputs a low level, the voltage at the inverting input of the comparator U2 is lower than the reference voltage at the non-inverting input. When the comparator U2 outputs a high level, the output end of the comparator U2 is connected to the gate of the MOSFET. The MOSFET is also used in the switching circuit of the light-emitting layer A01-1b. When the comparator U2 outputs a high level, the MOSFET is turned on and the light-emitting layer A01-1b is filled with light. When the comparator U2 outputs a low level, the MOSFET is turned off and the light-emitting layer A01-1b is not filled with light.

[0033] Specifically, in this embodiment, the light-emitting layer A01-1b includes a plurality of perovskite light-emitting units (not shown in the figure), and the plurality of perovskite light-emitting units are respectively used to emit light of different wavelengths required for plant growth, utilizing the electroluminescent effect of the perovskite material. Compared with traditional LED plant growth lamps, the range of the light-emitting wavelength of the perovskite material is narrower, and the light emitted is purer, that is, the light-emitting wavelength of the perovskite material can more accurately match the wavelength of the light required for plant growth, wherein each perovskite light-emitting unit emits light of a different wavelength; at the same time, for each perovskite light-emitting unit in the light-emitting layer A01-1b, a corresponding perovskite photosensitive unit (not shown in the figure) is provided in the photosensitive layer A01-1a, and the perovskite photosensitive unit is used to receive natural light and generate photocurrent , which utilizes the photoelectric effect of perovskite materials. Based on the photoelectric effect of perovskite materials, that is, the photoelectric characteristics of the photosensitive current respond to changes in ambient light in real time. The wavelength of light received by the perovskite photosensitive unit is the same as the wavelength of light emitted by its corresponding perovskite light-emitting unit. The perovskite band gap width of the perovskite photosensitive unit satisfies the relationship:

[0034] ,in Expressed as the perovskite bandgap width in the perovskite photosensitive unit, It represents the wavelength of light received by the perovskite photosensitive unit. That is, this embodiment relies on the wide-spectrum tunability of the perovskite material to adjust the bandgap width of the perovskite material in the perovskite photosensitive unit in the photosensitive layer A01-1a according to the wavelength of light required for plant growth, and uses the spectral control ability of the perovskite material to achieve accurate capture of the ambient light spectrum.

[0035] Please note that Figure 6 The input terminal ① of the driving circuit is connected to the photocurrent output by the photosensitive layer A01-1a. , that is, the current generated by the photoelectric effect of the perovskite photosensitive unit in the photosensitive layer A01-1a, the output end ② of the driving circuit is connected to the MOSFET switching circuit based on Q1, and the load is the light-emitting layer A01-1b. The fill light is controlled by the electroluminescent effect of the perovskite light-emitting unit in the light-emitting layer A01-1b. The photoelectric conversion circuit of the perovskite photosensitive unit and the electroluminescent circuit of the perovskite light-emitting unit directly adopt the circuit design of the existing technology.

[0036] Specifically, in this embodiment, the driving circuit in the PeLED light source module A01-1 has multiple groups, each of which is used to receive the photocurrent generated by different perovskite photosensitive units. , and drives the perovskite light-emitting unit corresponding to the perovskite photosensitive unit to provide fill light.

[0037] Among them, the driving circuit in the PeLED light source module A01-1 has different driving conditions for the fill light of light with different wavelengths, that is, the reference voltage at the non-inverting input terminal of the comparator U2 Different, at the same time, different PeLED light source modules A01-1 have different driving conditions for the fill light of light of the same wavelength, that is, the reference voltage in the driving circuit of the fill light of different PeLED light source modules A01-1 for the same wavelength is different. different.

[0038] Specifically, in this embodiment, the specific setting of the fill light driving conditions of the multiple PeLED light source modules A01-1 for lights of different wavelengths includes the following steps:

[0039] Under single natural light irradiation, the different wavelengths of light required for plant growth are all provided by natural light. The critical natural light intensity of each wavelength of light that meets the growth requirements of plants is determined in turn, that is, the critical natural light intensity corresponding to different wavelengths of light is different;

[0040] Obtain the photocurrent generated by the perovskite photosensitive unit corresponding to the wavelength of light at its corresponding critical natural light intensity. , and the voltage value converted by the transimpedance amplifier U1 ,in Expressed as wavelength The light is converted into the output voltage value by the transimpedance amplifier U1 at its critical natural light intensity;

[0041] Get the number of PeLED light source modules A01-1 in PeLED light source module A01 , based on the voltage value and quantity Set the fill light driving conditions: Set A PeLED light source module A01-1 has a wavelength of The reference voltage of the light fill light driving circuit They are , that is, PeLED light source module A01-1 They are .

[0042] Specifically, in this embodiment, a plant growth lamp A of this embodiment adopts a PeLED light source module A01 according to the above description, wherein it should be noted that the PeLED light source module A01-1 in the PeLED light source module A01 adopts a packaging design to improve the service life of the perovskite photosensitive unit and the perovskite light-emitting unit. At the same time, in the PeLED light source module A01, when the PeLED light source module A01-1 is installed, the photosensitive layer A01-1a is located on the upper end surface of the plant growth lamp A, so as to receive natural light from the external upper end to generate photocurrent, and the light-emitting layer A01-1b is located on the lower end surface of the plant growth lamp A, so as to provide light supplement for the plants at the lower end. At the same time, the double-end design of the photosensitive layer A01-1a and the light-emitting layer A01-1b can avoid the light interference of the light-emitting layer A01-1b on the photosensitive layer A01-1a.

[0043] This embodiment further provides a spectrum control method for the plant growth lamp A described above, the spectrum control method comprising the following steps:

[0044] When the intensity of natural light increases, the intensity of light of different wavelengths provided by natural light increases, and the photocurrent generated by the perovskite photosensitive unit in the photosensitive layer A01-1a Increase, the photocurrent of the input drive circuit Increases, the voltage converted by the transimpedance amplifier U1 increases, and when the natural light intensity gradually increases, the photocurrent The converted voltage also gradually increases. For light of different wavelengths, when the natural light intensity increases to exceed the critical natural light intensity, the photocurrent generated by the perovskite photosensitive unit corresponding to the receiving wavelength The converted voltage exceeds the reference voltage of all PeLED light source modules A01-1 in PeLED light source module A01 , that is, the comparator U2 in the driving circuit of all PeLED light source modules A01-1 corresponding to the light of this wavelength outputs a low level, that is, the MOSFET is turned off, and the light-emitting layer A01-1b does not supplement light. Similarly, when the natural light intensity increases to the critical natural light intensity, the photocurrent generated by the perovskite photosensitive unit The converted voltage gradually increases and gradually exceeds Reference voltage , each time the amount exceeds a certain amount, the PeLED light source modules A01-1 that exceed the certain amount turn off the fill light, that is, the PeLED light source modules A01-1 in the PeLED light source module A01 gradually reduce the fill light, thus realizing the self-weakening process of the fill light corresponding to the natural light enhancement;

[0045] When the intensity of natural light decreases, the intensity of light of different wavelengths provided by natural light decreases, and the photocurrent generated by the perovskite photosensitive unit in the photosensitive layer A01-1a Reduce the photocurrent of the input driver circuit Decreases, the voltage converted by the transimpedance amplifier U1 decreases, and when the natural light intensity gradually decreases, the photocurrent The converted voltage also gradually decreases. For light of different wavelengths, when the natural light intensity decreases to within the critical natural light intensity, the photocurrent generated by the perovskite photosensitive unit corresponding to the receiving wavelength is The converted voltage is lower than the reference voltage of the PeLED light source module A01-1 in the PeLED light source module A01 , that is, the comparator U2 in the driving circuit of the part of the PeLED light source module A01-1 corresponding to the light of this wavelength outputs a high level, that is, the MOSFET is turned on, and part of the light-emitting layer A01-1b is supplemented with light. Similarly, when the natural light intensity is within the critical natural light intensity and gradually decreases, the photocurrent generated by the perovskite photosensitive unit The converted voltage gradually decreases and gradually becomes lower than Reference voltage , every time the part is lower than that, the part of the PeLED light source module A01-1 that is lower than that turns on the fill light, that is, the PeLED light source module A01-1 in the PeLED light source module A01 gradually increases the fill light, that is, the fill light self-enhancement process corresponding to the weakening of natural light is realized.

[0046] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A PeLED light source module, comprising a plurality of PeLED light source modules distributed in an array, characterized in that: The PeLED light source module includes: luminescent layer; A photosensitive layer that receives external natural light to generate photocurrent; A driving circuit for driving the light-emitting layer to provide supplementary light according to the photocurrent generated by the photosensitive layer; The driving circuit includes a transimpedance amplifier, a comparator and a MOSFET connected in sequence. The driving circuit receives the photocurrent generated by the photosensitive layer and converts it into a voltage signal output through the transimpedance amplifier. The output end of the transimpedance amplifier is connected to the inverting input end of the comparator, that is, the transimpedance amplifier outputs the voltage converted from the photocurrent to the inverting input end of the comparator. The non-inverting input end of the comparator is connected to a reference voltage. When the voltage of the inverting input end of the comparator is higher than the reference voltage of the non-inverting input end, the comparator outputs a low level. When the voltage of the inverting input end of the comparator is lower than the reference voltage of the non-inverting input end, the comparator outputs a high level. The output end of the comparator is connected to the gate of the MOSFET. The MOSFET is used for the switching circuit of the light-emitting layer. When the comparator outputs a high level, the MOSFET is turned on and the light-emitting layer is supplemented with light. When the comparator outputs a low level, the MOSFET is turned off and the light-emitting layer is not supplemented with light.

2. A PeLED light source module according to claim 1, characterized in that: The light-emitting layer includes a plurality of perovskite light-emitting units, each of which is used to emit light of different wavelengths required for plant growth, that is, each perovskite light-emitting unit emits light of a different wavelength.

3. A PeLED light source module according to claim 2, characterized in that: For each perovskite light-emitting unit in the light-emitting layer, a corresponding perovskite photosensitive unit is provided in the photosensitive layer. The perovskite photosensitive unit is used to receive natural light and generate photocurrent. The wavelength of light received by the perovskite photosensitive unit is the same as the wavelength of light emitted by its corresponding perovskite light-emitting unit. The perovskite band gap width of the perovskite photosensitive unit satisfies the relationship: ,in is represented by the perovskite band gap width in the perovskite photosensitive unit, It represents the wavelength of light received by the perovskite photosensitive unit.

4. A PeLED light source module according to claim 3, characterized in that: The PeLED light source module has multiple groups of driving circuits, each of which is used to receive the photocurrent generated by different perovskite photosensitive units and drive the perovskite light-emitting units corresponding to the perovskite photosensitive units to provide fill light.

5. The PeLED light source module according to claim 4, characterized in that: The driving circuit in the PeLED light source module has different fill light driving conditions for light of different wavelengths, that is, the reference voltage of the comparator's non-inverting input terminal is different. At the same time, different PeLED light source modules have different fill light driving conditions for light of the same wavelength, that is, different PeLED light source modules have different reference voltages in the fill light driving circuit for light of the same wavelength.

6. The PeLED light source module according to claim 5, characterized in that: The setting of the fill light driving conditions of the multiple PeLED light source modules for lights of different wavelengths specifically includes the following steps: Under single natural light irradiation, the different wavelengths of light required for plant growth are all provided by natural light. The critical natural light intensity of each wavelength of light that meets the growth requirements of plants is determined in turn, that is, the critical natural light intensity corresponding to different wavelengths of light is different; Obtain the photocurrent generated by the perovskite photosensitive unit corresponding to the wavelength of light at its corresponding critical natural light intensity, and the voltage value converted by the transimpedance amplifier. ,in Expressed as wavelength The light is converted into the output voltage value by the transimpedance amplifier at its critical natural light intensity; Get the number of PeLED light source modules in the PeLED light source module , based on the voltage value and quantity Set the fill light driving conditions: Set A PeLED light source module has a wavelength of The reference voltages in the light fill driving circuit are .

7. A plant growth lamp, using a PeLED light source module according to any one of claims 1 to 6, characterized in that: It also includes a lampshade and a mounting bracket. In the PeLED light source module, when the PeLED light source module is installed, the photosensitive layer is located on the upper end surface of the plant growth lamp, and the light-emitting layer is located on the lower end surface of the plant growth lamp.

8. A spectrum control method for a plant growth lamp according to claim 7, characterized in that: The steps include: When the intensity of natural light increases, the intensity of light of different wavelengths provided by natural light increases, the photocurrent generated by the perovskite photosensitive unit in the photosensitive layer increases, the photocurrent input to the driving circuit increases, and the voltage converted by the transimpedance amplifier increases. When the intensity of natural light gradually increases, the photocurrent and the converted voltage also gradually increase. For light of different wavelengths, when the natural light intensity increases to exceed the critical natural light intensity, the photocurrent generated and the converted voltage of the perovskite photosensitive unit corresponding to the received wavelength exceed the reference voltage of all PeLED light source modules in the PeLED light source module, that is, the comparators in the driving circuits of all PeLED light source modules corresponding to the light of this wavelength output a low level, that is, the MOSFET is turned off, and the light-emitting layer does not supplement light. Similarly, when the natural light intensity increases to the critical natural light intensity, the PeLED light source modules in the PeLED light source module gradually reduce the supplement light. When the intensity of natural light decreases, the intensity of light of different wavelengths provided by natural light decreases, the photocurrent generated by the perovskite photosensitive unit in the photosensitive layer decreases, the photocurrent input to the driving circuit decreases, and the voltage converted by the transimpedance amplifier decreases. When the intensity of natural light gradually decreases, the photocurrent and the converted voltage also gradually decrease. For light of different wavelengths, when the natural light intensity decreases to within the critical natural light intensity, the photocurrent and the converted voltage generated by the perovskite photosensitive unit corresponding to the received wavelength are lower than the reference voltage of some PeLED light source modules in the PeLED light source module, that is, the comparator in the driving circuit of some PeLED light source modules corresponding to the light of this wavelength outputs a high level, the MOSFET is turned on, and part of the light-emitting layer is supplemented with light. Similarly, when the natural light intensity is within the critical natural light intensity and gradually decreases, the PeLED light source modules in the PeLED light source module gradually increase the supplementary light.

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