Greenhouse LED dynamic light supplementing method, system, medium and equipment

Abstract

The invention discloses a greenhouse LED dynamic light supplementing method, system, medium and equipment, and relates to the field of greenhouse plant light supplementing. The actual light supplementing intensity of the canopy of the greenhouse crop is obtained according to the distance between the LED light supplementing module and the canopy of the greenhouse crop by using the fitted relationship between the canopy height of the greenhouse crop and the light supplementing intensity, and the difference between the illumination intensity required by the greenhouse crop and the actual light supplementing intensity is obtained according to the carved accumulated illumination quantity required by the crop. Determining the light supplementing duration of the next moment; and after sunrise, monitoring the solar radiation intensity of the canopy of the greenhouse crop, determining the actually accepted accumulated illumination quantity of the canopy of the greenhouse crop in the current time period, comparing the accumulated illumination quantity required by the growth of the greenhouse crop in the previous time period in all the rest previous time periods, and judging whether dynamic light supplement is needed or not. According to the method, greenhouse LED dynamic light supplement regulation and control are carried out according to the cumulative illumination quantity, so that the greenhouse light supplement regulation and control accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of greenhouse plant lighting supplementation, and in particular to a greenhouse LED dynamic lighting supplementation method, system, medium and equipment. Background Art

[0002] Low temperature, weak light, and continuous rain and snow weather often cause insufficient light in the greenhouse, which directly affects facility production. Therefore, greenhouse crop production requires supplemental artificial light to improve the lighting environment of the greenhouse, thereby promoting the accumulation of plant photosynthetic products and improving facility crop yield formation and quality regulation.

[0003] However, traditional manual and timed control of lighting supplementation is affected by subjective and objective factors, resulting in problems such as low lighting control accuracy, energy waste, and insignificant yield increase effect. This makes it difficult to achieve targeted goals such as improving the photosynthetic capacity of greenhouse crops and promoting yield increase and quality control through greenhouse lighting supplementation. Summary of the invention

[0004] The present invention provides a greenhouse LED dynamic lighting method, system, medium and device to solve the above-mentioned problem existing in the prior art, that is, how to improve the accuracy of greenhouse lighting control in the prior art. The present invention provides a greenhouse LED dynamic lighting method, which includes:

[0005] Set the cumulative amount of light required for greenhouse crops; wherein the cumulative amount of light is the cumulative amount of light within 15 minutes;

[0006] After sunrise, the solar radiation intensity of the greenhouse crop canopy is monitored to determine the actual cumulative light amount received by the greenhouse crop canopy in the current time period, and the cumulative light amount required for the greenhouse crop growth in the previous quarter of an hour in all other previous time periods is compared. When the cumulative light amount required for the greenhouse crop growth in the previous quarter of an hour in all previous time periods is less than the actual cumulative light amount received in the current time period, supplementary light is required in the next quarter of an hour, and the supplementary light duration of the LED supplementary light module is dynamically adjusted.

[0007] Also includes:

[0008] The temperature and humidity of the plant canopy are monitored in real time through temperature and humidity sensors.

[0009] Optionally, when the LED fill light module is used for fill light, the value range of the LED fill light intensity is 180 to 250 μmol / m 2 / s.

[0010] The present invention provides a greenhouse LED dynamic supplementary lighting system, comprising:

[0011] A setting module, used to set the cumulative amount of light required by greenhouse crops; wherein the cumulative amount of light is the cumulative amount of light within 15 minutes;

[0012] The determination module is used to monitor the solar radiation intensity of the greenhouse crop canopy after sunrise, determine the cumulative amount of light actually received by the greenhouse crop canopy in the current time period, and compare the cumulative amount of light required for the growth of greenhouse crops in the previous quarter of an hour in all other previous time periods. When the cumulative amount of light required for the growth of greenhouse crops in the previous quarter of an hour in all previous time periods is less than the cumulative amount of light actually received in the current time period, fill light is required in the next quarter of an hour, and based on the relationship between the height of the greenhouse crop canopy and the fill light intensity, combined with the distance between the LED fill light module and the greenhouse crop canopy, the fill light duration for the next quarter of an hour is determined, and the LED fill light module is dynamically adjusted to fill light.

[0013] The present invention provides a computer-readable storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a processor, the above-mentioned greenhouse LED dynamic lighting method is implemented.

[0014] The present invention provides a computer device, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned greenhouse LED dynamic lighting method when executing the program.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides a greenhouse LED dynamic fill-light method, which monitors the solar radiation intensity of the greenhouse crop canopy after sunrise by setting the cumulative light amount required for the greenhouse crops, and determines the actual received cumulative light amount. When it is less than the cumulative light amount required for crop growth, fill-light is required, and then combined with the relationship between the LED fill-light module and the distance between the greenhouse crops, the fill-light duration for the next quarter of an hour can be determined, ensuring that the greenhouse crops obtain the light amount required for normal growth, and dynamically adjusting the fill-light duration of the LED fill-light module to ensure that the crop leaves are always at a relatively stable and appropriate net photosynthetic rate level, and then can dynamically adjust the lighting duration of the LED fill-light lamp according to the real-time changes in the lighting conditions inside the greenhouse, can realize lighting regulation based on crop photosynthesis, and effectively improve the accuracy of greenhouse fill-light regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0017] Figure 1 A flow chart of a greenhouse LED dynamic lighting method provided by an embodiment of the present invention;

[0018] Figure 2 A comparison chart of greenhouse light intensity changes with and without LED dynamic light supplementation based on the cumulative light intensity at each moment corresponding to different weather conditions provided by an embodiment of the present invention;

[0019] Figure 3 A schematic diagram of a computer device for a greenhouse LED dynamic lighting method provided by an embodiment of the present invention.

[0020] The above drawings have shown clear embodiments of the present invention, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present invention in any way, but to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0022] The technical solution of the present invention and how the technical solution of the present invention solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0023] Example 1

[0024] Figure 1 is a flow chart of a greenhouse LED dynamic lighting method provided by an embodiment of the present invention, such as Figure 1 As shown, this embodiment shows a greenhouse LED dynamic lighting method, including:

[0025] S101: Setting the cumulative amount of light required for greenhouse crops.

[0026] The cumulative light exposure is the cumulative light exposure within 15 minutes.

[0027] For example, the accumulated light intensity for 15 minutes can be calculated based on the light intensity required for a relatively suitable and stable net photosynthetic rate during the growth stage of greenhouse crops.

[0028] S102: After sunrise, monitor the solar radiation intensity of the greenhouse crop canopy, determine the cumulative amount of light actually received by the greenhouse crop canopy in the current time period, and compare the cumulative amount of light required for the greenhouse crop growth in the previous quarter of an hour in all other previous time periods. When the cumulative amount of light required for the greenhouse crop growth in the previous quarter of an hour in all previous time periods is less than the cumulative amount of light actually received in the current time period, supplementary light is required in the next quarter of an hour. Based on the relationship between the height of the greenhouse crop canopy and the supplementary light intensity, combined with the distance between the LED supplementary light module and the greenhouse crop canopy, the supplementary light duration for the next quarter of an hour is determined, and the LED supplementary light module is dynamically adjusted to supplement the light.

[0029] The actual fill light intensity is the light intensity monitored at the sensor position.

[0030] For example, by detecting the light intensity of the crop canopy, the cumulative amount of solar radiation actually monitored or calculated for the greenhouse crop canopy every 15 minutes can be determined and compared with the cumulative amount of light required for greenhouse crop growth in the previous quarter of an hour in all previous time periods. When the cumulative amount of light required for greenhouse crop growth in the previous quarter of an hour in all previous time periods is less than the cumulative amount of light actually received in the current time period, supplementary lighting is required in the next quarter of an hour and the duration of the supplementary lighting is determined; otherwise, no supplementary lighting is required.

[0031] Optionally, when the LED fill light module is used for fill light, the value range of the LED fill light intensity is 180 to 250 μmol / m 2 / s.

[0032] Example 2

[0033] In this embodiment, a test of dynamic supplementary lighting control in a solar greenhouse on the fifth floor of the College of Water Conservancy and Civil Engineering of China Agricultural University was conducted.

[0034] like Figure 2 (a) shows the change of greenhouse light intensity based on the cumulative light intensity of LED supplementary lighting and non-supplemented lighting on a typical cloudy day. The supplementary lighting system starts to monitor the light intensity of the greenhouse crop canopy after the sun rises. Since the sun has just risen from 7 to 8 in the morning, the light intensity is lower than the set minimum light intensity. The cumulative light intensity in this period is low, but because the temperature is low before 10 o'clock that day, the LED supplementary lighting is not turned on before 10 o'clock. The temperature rose after 10 o'clock, so the LED supplementary lighting was turned on after 10 o'clock, but because the light intensity was not good throughout the day, the LED supplementary lighting was always on. On that day, the daily cumulative light intensity of the non-supplemented part was only 3.0 mol / m 2 / d, the total LED lighting time is 43188s, i.e. 12 hours, so the daily cumulative light received by the crop canopy is 13.3mol / m 2 / d.

[0035] like Figure 2(b) shows the change of greenhouse light intensity based on the LED dynamic supplementary lighting and the unsupplemented lighting based on the cumulative light amount at that moment on a typical sunny day. The supplementary lighting system starts to monitor the light intensity of the crop canopy after sunrise. The cumulative light amount from 7 to 8 o'clock on the same day is too little, and the light intensity before 8 o'clock is lower than the set minimum light intensity. Therefore, the supplementary lighting system turns on the LED supplementary lighting at 8 o'clock. After 9 o'clock, as the solar radiation continues to increase, the natural light intensity reaches the set maximum value of 300μmol / m 2 / s, so the LED supplementary light was turned off after 9 o'clock. On that day, the daily cumulative light intensity without supplementary light was 23.5mol / m 2 / d, the supplementary lighting time is 10797s (3 hours), and the daily cumulative light intensity received by the crop canopy is 26.0mol / m 2 / d, the daily cumulative light intensity (Daily light integral, DLI) required to achieve the set target.

[0036] like Figure 2 (c) shows the change of greenhouse light intensity with and without LED supplementary lighting based on the cumulative light intensity at that moment in a typical cloudy day. It can be seen that before 9 o'clock on the same day, the greenhouse temperature detected by the sensor was less than 15°C, so the LED supplementary lighting system was not turned on; after 10 o'clock, as the greenhouse temperature rose to above 15°C, the LED supplementary lighting was turned on; at noon, the natural light intensity of solar radiation reached the set maximum value of 300μmol / m 2 / s, so turn off the LED fill light; after 3 pm, the natural light intensity is less than 300μmol / m 2 / s, so the LED light supplement is turned on. According to the calculation results of the Programmable Logic Controller (PLC), the DLI of the part without light supplement is 8.1mol / m 2 / d, the total lighting time was 39589s (11 hours), and the DLI received by the crop canopy was 17.6mol / m 2 / d, 8 mol / m away from the target DLI 2 / d.

[0037] Example 3

[0038] This embodiment provides a greenhouse LED dynamic lighting system, including:

[0039] A setting module, used to set the cumulative amount of light required by greenhouse crops; wherein the cumulative amount of light is the cumulative amount of light within 15 minutes;

[0040] The determination module is used to monitor the solar radiation intensity of the greenhouse crop canopy after sunrise, determine the cumulative amount of light actually received by the greenhouse crop canopy in the current time period, and compare the cumulative amount of light required for the growth of greenhouse crops in the previous quarter of an hour in all other previous time periods. When the cumulative amount of light required for the growth of greenhouse crops in the previous quarter of an hour in all previous time periods is less than the cumulative amount of light actually received in the current time period, fill light is required in the next quarter of an hour, and based on the relationship between the height of the greenhouse crop canopy and the fill light intensity, combined with the distance between the LED fill light module and the greenhouse crop canopy, the fill light duration for the next quarter of an hour is determined, and the LED fill light module is dynamically adjusted to fill light.

[0041] Among them, the light intensity and indoor temperature inside the greenhouse can be monitored in real time through light sensors and temperature sensors, and the collected information can be transmitted to the control system. The control system is responsible for receiving sensor data, processing and issuing control instructions, thereby realizing the control of the light intensity and lighting time of the LED fill light module.

[0042] For the specific definition of the greenhouse LED dynamic fill light system, please refer to the definition of the greenhouse LED dynamic fill light method above, which will not be repeated here. Each module in the above-mentioned greenhouse LED dynamic fill light system can be implemented in whole or in part by software, hardware and their combination. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0043] The present invention also provides a computer-readable storage medium, which stores a computer program. The computer program can be used to execute the greenhouse LED dynamic lighting method provided above.

[0044] The present invention also provides Figure 3 The structural diagram of the computer device shown in FIG. Figure 3 As shown, at the hardware level, the computer device includes a processor, an internal bus, a network interface, a memory, and a non-volatile memory, and may also include hardware required for other services. The processor reads the corresponding computer program from the non-volatile memory into the memory and then runs it to implement the greenhouse LED dynamic lighting method provided in the above embodiment.

[0045] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided by the present invention can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0046] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the present invention.

Claims

1. A greenhouse LED dynamic lighting method, characterized in that: include: Set the cumulative amount of light required for greenhouse crops; wherein the cumulative amount of light is the cumulative amount of light within 15 minutes; After sunrise, the solar radiation intensity of the greenhouse crop canopy is monitored to determine the cumulative amount of light actually received by the greenhouse crop canopy in the current time period, and the cumulative amount of light required for the greenhouse crop growth in the previous quarter of an hour in all other previous time periods is compared. When the cumulative amount of light required for the greenhouse crop growth in the previous quarter of an hour in all previous time periods is less than the cumulative amount of light actually received in the current time period, fill light is required in the next quarter of an hour, and based on the relationship between the greenhouse crop canopy height and fill light intensity, combined with the distance between the LED fill light module and the greenhouse crop canopy, the fill light duration for the next quarter of an hour is determined, and the LED fill light module is dynamically adjusted to fill light.

2. The greenhouse LED dynamic lighting method according to claim 1, characterized in that: Also includes: The temperature and humidity of the plant canopy are monitored in real time through temperature and humidity sensors.

3. The greenhouse LED dynamic lighting method according to claim 1, characterized in that: When the LED fill light module is used for fill light, the value range of the LED fill light intensity is 180~250μmol / m 2 / s.

4. A greenhouse LED dynamic lighting system, characterized in that: include: A setting module, used to set the cumulative amount of light required by greenhouse crops; wherein the cumulative amount of light is the cumulative amount of light within 15 minutes; The determination module is used to monitor the solar radiation intensity of the greenhouse crop canopy after sunrise, determine the cumulative amount of light actually received by the greenhouse crop canopy in the current time period, and compare the cumulative amount of light required for the growth of greenhouse crops in the previous quarter of an hour in all other previous time periods. When the cumulative amount of light required for the growth of greenhouse crops in the previous quarter of an hour in all previous time periods is less than the cumulative amount of light actually received in the current time period, fill light is required in the next quarter of an hour, and based on the relationship between the height of the greenhouse crop canopy and the fill light intensity, combined with the distance between the LED fill light module and the greenhouse crop canopy, the fill light duration for the next quarter of an hour is determined, and the LED fill light module is dynamically adjusted to fill light.

5. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by the processor, the greenhouse LED dynamic lighting method according to any one of claims 1 to 3 is implemented.

6. A computer device, characterized in that: The method comprises a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the program, the method for dynamic greenhouse LED lighting supplement as claimed in any one of claims 1 to 3 is implemented.

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