Control method for light temperature coordination of full artificial light plant factory based on daily cumulative light quantity control

Abstract

The present application relates to a kind of control method of whole artificial light plant factory illumination temperature coordination based on daily cumulative light quantity control, and the DLI of different varieties and growth period is set to light supplement, and the temperature between cultivation layer is monitored in real time. Once temperature exceeds the upper limit threshold of set illumination adjustment temperature, system will automatically adjust the illumination intensity to 2 / 3 of original setting, and recalculate the light supplement duration;After a period of time after adjusting light supplement, if temperature still exceeds the upper limit threshold, illumination intensity is further reduced to 1 / 2, until temperature returns to the ideal range;This process will be repeated continuously in the whole photoperiod, to ensure the best coordination of illumination and temperature, so as to prevent the phenomenon of burning tip of plant.

Description

Technical Field

[0001] This invention belongs to the field of plant factory production technology, and relates to a control method for light and temperature coordination in a fully artificial light plant factory based on daily cumulative light control. Background Technology

[0002] With the continuous growth of the global population and the acceleration of urbanization, traditional agriculture faces numerous challenges, including limited land resources, climate change, and pests and diseases. Plant factories, as an emerging agricultural production method, offer advantages such as efficient resource utilization, reduced environmental pollution, and increased yield and quality. A fully enclosed plant factory refers to plant cultivation in a completely sealed environment, completely isolating the plant from external environmental influences. Artificial lighting is one of the core technologies of plant factories, primarily providing the necessary light for the plants through LED lights or other artificial light sources. In this fully enclosed environment, the artificial light source can precisely control the photoperiod, light intensity, and spectrum of the light, ensuring that the plants grow under optimal light conditions.

[0003] To maximize space utilization, plant factories typically employ tiered, multi-layered vertical cultivation structures, a design that significantly improves space efficiency. However, this method also has drawbacks. To effectively utilize space, the vertical distance between tiers is generally small, only 30-50 centimeters. As plants grow, airflow becomes restricted, easily leading to high humidity or high temperature environments in certain areas. Simultaneously, the increasingly smaller gap between grow lights and plants easily causes leaf burn, also known as leaf tip burn. Once leaf tip burn occurs in plant factory production, it not only affects plant growth but also severely damages the plants' appearance and quality, resulting in production losses for the plant factory.

[0004] To solve the problem of tip burn in plant factories, addressing the most crucial technology in plant factory production—supplementary lighting—is the most effective method. The main elements of supplementary lighting in plant factories include photoperiod, light intensity, and light quality. In recent years, techniques using daily cumulative light (DLI, the total light energy received by a plant in a day) to coordinate photoperiod and light intensity have begun to be applied in plant factory production. However, the high temperatures generated by supplementary lighting and the coordination between temperature and light intensity during supplementary lighting have not yet been implemented. Summary of the Invention

[0005] The purpose of this invention is to provide a method for controlling the light and temperature coordination of a fully artificial light plant factory based on daily cumulative light control, so as to solve the common tip burn phenomenon in plant factories, and further improve the production efficiency and crop quality of plant factories by optimizing light energy utilization and temperature management.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] In one aspect, the present invention provides a method for controlling the light and temperature coordination of a fully artificial light plant factory based on daily cumulative light intensity control, comprising the following steps:

[0008] S1. Set the corresponding daily cumulative light intensity for supplemental lighting, as well as the upper and lower threshold values ​​for light adjustment temperature, according to the growth period of different crops and varieties.

[0009] S2. Set the initial light intensity and start supplemental lighting. Determine the initial supplemental lighting duration based on the rated daily cumulative light intensity.

[0010] S3. Collect the interlayer temperature of the plant factory cultivation layer during the supplemental lighting process. Compare the collected interlayer temperature with the set upper and lower thresholds of the light adjustment temperature. When the interlayer temperature exceeds the upper threshold of the light adjustment temperature, reduce the light intensity of the supplemental lighting until the interlayer temperature is lower than the upper threshold of the light adjustment temperature. Then, redetermine the supplemental lighting duration based on the adjusted light intensity.

[0011] S4. Next, monitor and collect the interlayer temperature of the plant factory cultivation layer. When the collected interlayer temperature is between the upper and lower thresholds of the light adjustment temperature, maintain the current light intensity. When the interlayer temperature is lower than the lower threshold of the adjustment temperature, adjust the current light intensity to the initial light intensity. After the adjustment is completed, redetermine the new supplemental lighting duration.

[0012] S5. Repeat S3 and S4 throughout the entire photoperiod to ensure coordination between supplemental lighting and interlayer temperature during the photoperiod and prevent plant tip burn.

[0013] Furthermore, the upper limit threshold of the light-adjusting temperature is 5-10℃ lower than the critical tip-burning temperature of the crop; the lower limit threshold of the light-adjusting temperature is set to the lowest value of the suitable growth temperature range of the crop based on experience, preferably, the lower limit threshold of the light-adjusting temperature is set to the most suitable growth temperature of the crop based on experience.

[0014] When leafy greens such as lettuce are grown in plant chambers, the high temperature and humidity in certain areas can easily cause leaf tip burn. The highest temperature a plant can withstand when receiving light can lead to damage to its photosynthetic mechanism or leaf tip burn (i.e., the leaf tips dry out or turn yellow). This temperature is called the "critical leaf tip burn temperature." To avoid leaf tip burn, an upper limit threshold for light adjustment temperature is set. This upper limit threshold should be lower than the critical leaf tip burn temperature to prevent leaf tip burn. Plants have a suitable temperature range for growth, especially in plant factories. If the temperature is too low, it will not only affect plant growth, but also, according to the LDI (Light Diffusion Injection) principle, lowering the temperature will inevitably lead to a longer supplemental lighting time. Excessive supplemental lighting time will also have adverse effects on plants. Therefore, a lower limit threshold for light adjustment temperature is set. This lower limit threshold represents the suitable temperature range for plant growth and can be set as the optimal temperature.

[0015] Furthermore, in S3, the interlayer temperature is the temperature located 5–10 cm away from the crop in the plant factory cultivation layer.

[0016] Furthermore, in S3, the process of reducing the intensity of the supplementary light is as follows:

[0017] First, reduce the light intensity to 2 / 3 of the initial light intensity, and then recalculate the new supplemental lighting duration after adjustment;

[0018] Continue monitoring the interlayer temperature. If it still exceeds the upper limit threshold for temperature adjustment, continue adjusting the light intensity to half of the initial light intensity. Otherwise, proceed to step S4. After adjustment, recalculate the new supplemental lighting duration.

[0019] Furthermore, in S3 and S4, within 30 minutes after each adjustment of the light intensity, only the interlayer temperature is monitored, but the light intensity is not adjusted again. For example, after adjusting the light intensity to 2 / 3, the light intensity will only be adjusted to 1 / 2 again if the interlayer temperature still exceeds the upper limit threshold of the adjustment temperature 30 minutes later.

[0020] Furthermore, the initial light intensity is the appropriate light intensity during the crop growth process, as known from experience.

[0021] In a second aspect, the present invention also provides a control system for light and temperature coordination in a fully artificial light plant factory based on daily cumulative light intensity control, for implementing the control method described in any of the preceding claims, the control system comprising:

[0022] A temperature detection module is installed next to the cultivation layer in the plant factory and is used to collect the interlayer temperature of the cultivation layer in the plant factory.

[0023] The processing module is configured to compare the interlayer temperature fed back by the temperature detection module with the set upper and lower threshold values ​​for the illumination adjustment temperature.

[0024] A supplemental lighting module, which is connected to the processing module, is configured to perform supplemental lighting operations on crops in the plant factory cultivation layer, and the intensity of the supplemental lighting is adjustable.

[0025] In a third aspect, the present invention also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the control method as described in any of the preceding claims.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] (1) Dynamic light intensity adjustment to avoid tip burning caused by excessive temperature.

[0028] Traditional supplemental lighting methods in plant factories typically rely on fixed light intensities, neglecting the potential risks associated with changes in ambient temperature, such as leaf tip burn. This invention innovatively introduces a dynamic light intensity adjustment mechanism based on temperature feedback. When the temperature between cultivation layers in the plant factory exceeds the set upper limit threshold for light adjustment, this invention adjusts the light intensity to two-thirds of the original setting and recalculates the supplemental lighting duration, ensuring plants receive adequate light while avoiding leaf tip burn due to excessive temperature. If the temperature continues to rise, the light intensity will be further adjusted to half the set value to further reduce the temperature. This dynamic light adjustment method based on real-time temperature monitoring effectively prevents the negative impact of excessively high temperatures on plant growth, providing a more intelligent and precise solution, particularly for the localized overheating issues that easily occur in high-density, multi-layered vertical cultivation structures.

[0029] (2) Dynamic coordinated control of illumination period and illumination intensity based on DLI

[0030] Another significant innovation of this invention lies in utilizing Daily Light Integral (DLI) as the core parameter for light control. Through precise calculation and adjustment of DLI, dynamic coordination of light cycle and light intensity is achieved. During plant growth, different growth stages and plant varieties have different light requirements. This invention sets DLI values ​​based on the crop's growth stage and variety, and combines this with real-time temperature monitoring data to dynamically adjust light intensity and supplemental lighting duration, ensuring that plants receive optimal light conditions at each growth stage. This method not only improves light energy utilization efficiency but also avoids poor plant growth caused by excessive or insufficient light intensity. Furthermore, the DLI-based light adjustment method can significantly reduce energy consumption in plant factories and minimize ineffective light waste, thereby achieving energy conservation and environmental protection goals while improving yield and quality.

[0031] This invention achieves a high degree of coordination between light and temperature by introducing dynamic adjustment of light cycle and intensity based on DLI (Digital Lighting Intensity) and combining it with a light intensity adjustment mechanism based on temperature feedback. This innovative control method not only effectively solves the common tip burn phenomenon in plant factories, but also further improves the production efficiency and crop quality of plant factories by optimizing light energy utilization and temperature management, providing technical support for promoting and popularizing the development of fully artificial light plant factories. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the control system of the present invention;

[0033] Explanation of markings in the diagram:

[0034] 100 - Light and temperature coordinated control system, 101 - Temperature detection module, 102 - Processing module, 103 - Supplemental lighting module. Detailed Implementation

[0035] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0036] In some embodiments, the present invention provides a method for controlling the light and temperature coordination of a fully artificial light plant factory based on daily cumulative light intensity control, comprising the following steps:

[0037] S1. Set the corresponding daily cumulative light intensity for supplemental lighting, as well as the upper and lower threshold values ​​for light adjustment temperature, according to the growth period of different crops and varieties.

[0038] S2. Set the initial light intensity and start supplemental lighting. Determine the initial supplemental lighting duration based on the rated daily cumulative light intensity.

[0039] S3. Collect the interlayer temperature of the plant factory cultivation layer during the supplemental lighting process. Compare the collected interlayer temperature with the set upper and lower thresholds of the light adjustment temperature. When the interlayer temperature exceeds the upper threshold of the light adjustment temperature, reduce the light intensity of the supplemental lighting until the interlayer temperature is lower than the upper threshold of the light adjustment temperature. Then, redetermine the supplemental lighting duration based on the adjusted light intensity.

[0040] S4. Next, monitor and collect the interlayer temperature of the plant factory cultivation layer. When the collected interlayer temperature is between the upper and lower thresholds of the light adjustment temperature, maintain the current light intensity. When the interlayer temperature is lower than the lower threshold of the adjustment temperature, adjust the current light intensity to the initial light intensity. After the adjustment is completed, redetermine the new supplemental lighting duration.

[0041] S5. Repeat S3 and S4 throughout the entire photoperiod to ensure coordination between supplemental lighting and interlayer temperature during the photoperiod and prevent plant tip burn.

[0042] In other embodiments, the present invention also provides a control system for coordinated light and temperature in a fully artificial light plant factory based on daily cumulative light intensity control, for implementing the control method described in any of the preceding embodiments, such as... Figure 1 As shown, the control system is a light and temperature coordinated control system 100, comprising:

[0043] Temperature detection module 101 is installed next to the plant factory cultivation layer and is used to collect the interlayer temperature of the plant factory cultivation layer.

[0044] Processing module 102 is configured to compare the interlayer temperature fed back by the temperature detection module with the set upper and lower threshold values ​​of the illumination adjustment temperature.

[0045] The supplemental lighting module 103 is connected to the processing module and is configured to perform supplemental lighting operations on crops in the plant factory cultivation layer, and the intensity of the supplemental lighting is adjustable.

[0046] In addition, the processing module 102 is also configured to set the rated daily cumulative light intensity, as well as the upper and lower thresholds of the light adjustment temperature, and to calculate the supplementary lighting duration based on the daily cumulative light intensity.

[0047] In other embodiments, the present invention also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the control method as described in any of the preceding embodiments. The storage medium may be an electronic medium, magnetic medium, optical medium, electromagnetic medium, infrared medium, or a semiconductor system or propagation medium. The storage medium may also include semiconductor or solid-state memory, magnetic tape, removable computer disk, random access memory (RAM), read-only memory (ROM), hard disk, and optical disk. Optical disks may include optical disc-read-only memory (CD-ROM), optical disc-read / write (CD-RW), and DVD.

[0048] Those skilled in the art will understand that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the meaning consistent with their meaning in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as herein.

[0049] The above implementation methods will be described in more detail below with reference to specific embodiments.

[0050] Example 1:

[0051] Take the production of bok choy (Shanghai bok choy) in a plant factory as an example.

[0052] The height between cultivation layers is 40cm, and the cultivation density is 28 plants / m². 2 .

[0053] Fill light settings: Initial fill light intensity PPFD is 300umol / m 2 If supplemental lighting lasts for 13 hours, then the daily cumulative light intensity (DLI) is calculated as follows: DLI = 300 * 13 * 3600 * 10 -6 =14.04mol / m 2 / day, adjust the upper temperature threshold to 40℃ and the lower temperature threshold to 30℃.

[0054] Start supplemental lighting according to the settings, initial light intensity (PPFD: 300umol / m²) 2 ·s),

[0055] Then, the interlayer temperature was monitored. After 8 hours of supplemental lighting, the interlayer temperature reached 41℃, which exceeded the upper limit threshold for temperature adjustment, and the light intensity adjustment was initiated.

[0056] Calculate the completed illumination DLI: DLI (first segment) = 300 * 8 * 3600 * 10 -6 =8.64mol / m 2 / sky,

[0057] The remaining DLI to be completed is 14.04 - 8.64 = 5.4 mol / m 2 / sky.

[0058] Recalculate the required supplemental lighting time, and apply supplemental lighting at 2 / 3 of the set value. Required supplemental lighting time = 5.4 * 10 6 / 3600*300*2 / 3=7.5h.

[0059] Continue monitoring the interlayer temperature, but only monitor without adjusting for 30 minutes after adjusting the light intensity. After supplementing with light at 2 / 3 of the set value for 5 hours, the interlayer temperature was monitored at 40.5℃, which exceeded the upper limit threshold for temperature adjustment, so the light intensity adjustment was restarted.

[0060] Calculate the completed illumination DLI (Drawdown Limiting) for supplemental lighting at 2 / 3 of the illumination intensity. DLI (second segment) = 200 * 5 * 3600 * 10 -6 =3.6mol / m 2 / sky,

[0061] The remaining DLI to be completed is 5.4 - 3.6 = 1.8 mol / m 2 / sky,

[0062] Apply supplemental lighting at half the set value, then recalculate the required supplemental lighting time. Therefore, the required supplemental lighting time = 1.8 * 10. 6 / 3600*300*1 / 2=3.33h.

[0063] Continue monitoring the interlayer temperature, but only monitor without adjusting it for 30 minutes after the light intensity is adjusted. After supplementing with half the set value for 1 hour, the interlayer temperature is monitored to drop to 29.5℃, which is lower than the lower limit threshold of the adjusted temperature. Then, the light intensity adjustment is restarted and adjusted back to the initial set light intensity.

[0064] Calculate the completed illumination DLI (Digital Lid Intensity) by applying 1 / 2 light intensity supplemental lighting. DLI (Third Segment) = 150 * 1 * 3600 * 10 -6 =0.54mol / m 2 / sky,

[0065] The remaining DLI to be completed is 1.8 - 0.54 = 1.26 mol / m 2 / sky,

[0066] Recalculate the required supplemental lighting time and apply supplemental lighting according to the initial settings. Required supplemental lighting time = 1.26 * 10 6 / (3600*300)=1.17h.

[0067] Continue to monitor the interlayer temperature and repeat the above process to achieve coordinated light and temperature control.

[0068] The corresponding supplemental lighting time and completed DLI in the entire supplemental lighting cycle are shown in Table 1 below.

[0069] Table 1

[0070]

[0071] Example 2:

[0072] Take the production of lettuce (butter lettuce) in a plant factory as an example.

[0073] The height between cultivation racks is 40cm, and the cultivation density is 28 plants / m². 2 .

[0074] Fill light settings: PPFD, 300umol / m 2 •s; supplemental lighting 14h; DLI = 300*14*3600*10 -6 =15.12mol / m 2 / day, adjust the upper temperature threshold to 40℃, and adjust the lower temperature threshold to 30℃.

[0075] Start supplemental lighting according to the settings, light intensity (PPFD: 300umol / m²) 2 ·s).

[0076] After monitoring the interlayer temperature and supplementing the light for 10 hours, the interlayer temperature reached 40.5℃, exceeding the upper limit threshold for temperature adjustment, and the light intensity adjustment was initiated.

[0077] Calculate the completed lighting DLI, DLI (first segment) = 300 * 10 * 3600 * 10 -6 =10.82mol / m 2 / sky,

[0078] The remaining DLI to be completed is 15.12 - 10.8 = 4.322 mol / m³. 2 / sky,

[0079] Recalculate the required supplemental lighting time, and apply supplemental lighting at 2 / 3 of the set value. The required supplemental lighting time = 4.32 * 106 / 3600 * 300 * 2 / 3 = 6 hours.

[0080] Continue monitoring the interlayer temperature, but only monitor without adjusting for 30 minutes after adjusting the light intensity. After supplementing with light at 2 / 3 of the set value for 4 hours, the interlayer temperature was monitored to reach 40.5℃, which still exceeded the upper limit threshold for temperature adjustment, so the light intensity adjustment was restarted.

[0081] Calculate 2 / 3 of the illumination intensity for supplemental lighting to complete the illumination DLI.

[0082] DLI (Second Segment) = 200 * 4 * 3600 * 10 -6 =2.88mol / m 2 / sky,

[0083] The remaining DLI to be completed is 4.32 - 2.88 = 1.44 mol / m 2 / sky,

[0084] Recalculate the required supplemental lighting time, and apply supplemental lighting at half the set value. Required supplemental lighting time = 1.44 * 10 6 / 3600*300*1 / 2=2.67h.

[0085] Continue monitoring the interlayer temperature, but only monitor without adjusting it for 30 minutes after the light intensity is adjusted. After supplementing with half the set value for 0.5 hours, the interlayer temperature is monitored and found to have dropped to 29℃, which is lower than the lower limit threshold of the adjusted temperature. Then, the light intensity adjustment is restarted and adjusted back to the initial light intensity setting.

[0086] Calculate the completed illumination DLI by supplementing with 1 / 2 light intensity.

[0087] DLI (third segment) = 150 * 0.5 * 3600 * 10 -6 =0.27mol / m 2 / sky,

[0088] The remaining DLI to be completed is 1.44 - 0.27 = 1.17 hours.

[0089] Recalculate the required supplemental lighting time and apply supplemental lighting according to the initial settings. Required supplemental lighting time = 1.17 * 10 6 / 3600*300=1.08h.

[0090] Continue to monitor the interlayer temperature and repeat the above process to achieve coordinated light and temperature control.

[0091] Table 2

[0092]

[0093] In traditional plant factory cultivation, when each lettuce head reaches a fresh weight of 100 grams, the rate of tip burn is around 10%. However, when the fresh weight of each lettuce head is increased to 150 grams, about 30% of the lettuce heads develop tip burn. Once tip burn occurs, the selling price of the lettuce drops to only 10% of its original price. Previously, the price of high-quality, safe lettuce from a plant factory could reach 20-30 yuan / kg, but if tip burn occurs, the price drops to only 2-3 yuan / kg or even lower. However, in Example 2 above, after adopting a light and temperature coordination control method for a fully artificial light plant factory based on daily cumulative light intensity control, tip burn does not occur when the lettuce grows to 150 grams per head. This not only increases the yield per unit area by 33.3%, but also ensures product quality, resulting in better profits and benefits.

[0094] Furthermore, in traditional plant factories, conventional supplemental lighting methods typically employ fixed durations and intensities. For example, many systems are set to provide 10-14 hours of supplemental lighting daily, maintaining a certain light intensity to meet the photosynthetic needs of plants. However, this fixed lighting approach often cannot be adjusted according to the plant's growth stage, environmental changes, and light requirements, particularly failing to coordinate light and temperature, thus impacting plant growth and crop quality. In contrast, the "supplemental lighting control method" of this invention demonstrates significant advantages by flexibly controlling the intensity and duration of supplemental lighting based on the total energy of the supplemental light. A comparison with traditional fixed supplemental lighting methods clearly shows that the dynamic control method provided by this invention is more in line with plant growth patterns and can effectively improve the production efficiency and crop quality of plant factories.

[0095] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A method for controlling the light and temperature coordination of a fully artificial light plant factory based on daily cumulative light intensity control, characterized in that, Includes the following steps: S1. Set the corresponding daily cumulative light intensity for supplemental lighting, as well as the upper and lower threshold values ​​for light adjustment temperature, according to the growth period of different crops and varieties. S2. Set the initial light intensity and start supplemental lighting. Determine the initial supplemental lighting duration based on the rated daily cumulative light intensity. S3. Collect the interlayer temperature of the plant factory cultivation layer during the supplemental lighting process. Compare the collected interlayer temperature with the set upper and lower thresholds of the light adjustment temperature. When the interlayer temperature exceeds the upper threshold of the light adjustment temperature, reduce the light intensity of the supplemental lighting until the interlayer temperature is lower than the upper threshold of the light adjustment temperature. Then, redetermine the supplemental lighting duration based on the adjusted light intensity. S4. Next, monitor and collect the interlayer temperature of the plant factory cultivation layer. When the collected interlayer temperature is between the upper and lower thresholds of the light adjustment temperature, maintain the current light intensity. When the interlayer temperature is lower than the lower threshold of the adjustment temperature, adjust the current light intensity to the initial light intensity. After the adjustment is completed, redetermine the new supplemental lighting duration. S5. Repeat S3 and S4 throughout the entire photocycle to ensure coordination between supplemental lighting and interlayer temperature during the photocycle and prevent plant tip burn. The upper limit threshold for light-adjusted temperature is 5-10°C lower than the critical tip-burning temperature of the crop; The lower limit threshold for light adjustment temperature is set as the lower limit of the suitable growth temperature range for crops, as known from experience. In S3, the interlayer temperature is the temperature located 5-10 cm away from the crop in the plant factory cultivation layer; In S3, the process of reducing the intensity of the supplementary light is as follows: First, reduce the light intensity to 2 / 3 of the initial light intensity, and then recalculate the new supplemental lighting duration after adjustment; Continue monitoring the interlayer temperature. If it still exceeds the upper limit threshold for temperature adjustment, continue adjusting the light intensity to half of the initial light intensity. Otherwise, proceed to step S4. After adjustment, recalculate the new supplemental lighting duration.

2. The method for controlling light and temperature coordination in a fully artificial light plant factory based on daily cumulative light intensity control according to claim 1, characterized in that, In S3 and S4, within 30 minutes after each adjustment of the light intensity, only the interlayer temperature is monitored, but the light intensity is not adjusted again.

3. The method for controlling light and temperature coordination in a fully artificial light plant factory based on daily cumulative light intensity control according to claim 1, characterized in that, The initial light intensity is the appropriate light intensity during the crop growth process, as known from experience.

4. A control system for light and temperature coordination in a fully artificial light plant factory based on daily cumulative light intensity control, used to implement the control method as described in any one of claims 1-3, characterized in that, The control system includes: A temperature detection module is installed next to the cultivation layer in the plant factory and is used to collect the interlayer temperature of the cultivation layer in the plant factory. The processing module is configured to compare the interlayer temperature fed back by the temperature detection module with the set upper and lower threshold values ​​for the illumination adjustment temperature. A supplemental lighting module, which is connected to the processing module, is configured to perform supplemental lighting operations on crops in the plant factory cultivation layer, and the intensity of the supplemental lighting is adjustable.

5. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the control method as described in any one of claims 1-3.

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