Device and method for reducing burning heart rate of leaf vegetables in plant factory

Abstract

The invention provides a device and method for reducing the burning heart rate of leaf vegetables in a plant factory, and belongs to the technical field of plant factories. According to the device and the method, the environment humidity and the photoperiod of the whole growth period of the leaf vegetables are dynamically and accurately regulated and controlled, the burning heart rate of the leaf vegetables is reduced, and technical support is provided for improving the quality of the leaf vegetables.

Description

Technical Field

[0001] The present invention belongs to the technical field of plant factories, and particularly relates to a device and method for reducing the heartburn rate of leafy vegetables in a plant factory. Background Art

[0002] The greatest advantage of plant factories for production is that they can control the environmental factors required for plant growth within a relatively suitable range throughout the year. Therefore, the growth rate of fruits and vegetables in plant factories is relatively fast, and the cycle is relatively short, which can ensure that fruits and vegetables are stably produced throughout the year without being affected by seasons and geographical environments. This is also an important reason why plant factories have received high attention and rapid development worldwide.

[0003] However, in plant factories, especially large-scale commercial plant factories, the too-fast growth rate of leafy vegetables is likely to cause physiological diseases (such as dry heartburn) caused by calcium deficiency, which will greatly reduce the appearance quality and commercial value of leafy vegetables and seriously affect the economic benefits of plant factories. Therefore, there is an urgent need for a system and method for reducing the heartburn rate of leafy vegetables in a plant factory to solve the above problems faced in the cultivation process of plant factories. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to some extent. For this purpose, an embodiment of the present invention provides a device and method for reducing the heartburn rate of leafy vegetables in a plant factory, which can reduce the heartburn rate of leafy vegetables by dynamically and precisely regulating the environmental humidity and photoperiod during the entire growth period of leafy vegetables, and provide technical support for improving the quality of leafy vegetables.

[0005] In a first aspect, an embodiment of the present invention provides a device for reducing the heartburn rate of leafy vegetables in a plant factory, including: an image recognition system, a humidity sensing system, a control system, and a humidification system; the output ends of the image recognition system and the humidity sensing system are connected to the input end of the control system, and the output end of the control system is connected to the input end of the humidification system; wherein, the image recognition system is used to collect the current image information of leafy vegetables and identify the heartburn situation of leafy vegetables, and then send the abnormal information of the heartburn situation of leafy vegetables to the control system; the humidity sensing system is used to collect the current environmental humidity information of leafy vegetables and send the current environmental humidity information of leafy vegetables to the control system; the control system is used to receive the abnormal information of the heartburn situation of leafy vegetables and the current environmental humidity information of leafy vegetables, compare the current environmental humidity information of leafy vegetables with a preset environmental humidity value, and control the humidification system to adjust the environmental humidity to the preset environmental humidity value.

[0006] The advantages and technical effects brought by the method of the embodiment of the present invention are as follows:

[0007] The device according to the embodiments of the present invention can dynamically and precisely regulate the humidity and photoperiod during the entire growth period of leafy vegetables, reduce the heartburn rate of leafy vegetables, and provide technical support for improving the quality of leafy vegetables.

[0008] In some embodiments, the device further includes a light source system. The output end of the control system is connected to the input end of the light source system. The control system is further configured to receive the abnormal information of the heartburn condition of the leafy vegetables and control the light source system to adjust the photoperiod.

[0009] In some embodiments, the image recognition system includes a camera module, an identification module, and a communication module. The camera module is used to collect the current image information of the leafy vegetables. The leafy vegetable database is stored in the identification module, and the leafy vegetable database includes the image information of normal leafy vegetables at each growth stage. The identification module calls the leafy vegetable database to obtain the picture information of the current growth stage of normal leafy vegetables and compares it with the current image information of the leafy vegetables collected by the camera module to identify the heartburn condition of the leafy vegetables. The communication module is used to send the abnormal information of the heartburn condition of the leafy vegetables to the control system.

[0010] In some embodiments, when the image recognition system identifies that the diameter of the heartburn at the center of the leafy vegetables starts to exceed 3 mm, the image recognition system sends the abnormal information of the heartburn condition of the leafy vegetables to the control system.

[0011] In some embodiments, the preset value of the environmental humidity is 40%RH - 50%RH.

[0012] In some embodiments, after receiving the abnormal information of the heartburn condition of the leafy vegetables, the control system controls the light source system to adjust the photoperiod to 6 h / d - 8 h / d.

[0013] In some embodiments, the leafy vegetables are cruciferous and / or lettuce leafy vegetables.

[0014] In some embodiments, the plant factory is any one of a fully artificial light illumination plant factory, a solar light plus artificial supplementary light plant factory, a glass greenhouse plus artificial supplementary light plant factory, and a film greenhouse plus artificial supplementary light plant factory.

[0015] In a second aspect, the embodiments of the present invention further provide a method for reducing the heartburn rate of leafy vegetables in a plant factory. After the leafy vegetable seedlings are planted in the plant factory, the device of the first aspect is turned on to monitor and real-time regulate the environmental humidity and photoperiod.

[0016] The advantages and technical effects brought by the method according to the embodiments of the present invention are:

[0017] The method of the embodiment of the present invention can dynamically and precisely regulate the humidity and photoperiod during the whole growth period of leafy vegetables through the device of the first aspect, reduce the heartburn rate of leafy vegetables, and provide technical support for improving the quality of leafy vegetables. Detailed implementation manners

[0018] The embodiments of the present invention will be described in detail below. The following described embodiments are exemplary and are intended to explain the present invention and should not be construed as a limitation to the present invention.

[0019] The embodiment of the present invention provides a first aspect. The embodiment of the present invention provides a device for reducing the heartburn rate of leafy vegetables in a plant factory, including: an image recognition system, a humidity sensing system, a control system, and a humidification system; the output ends of the image recognition system and the humidity sensing system are connected to the input end of the control system, and the output end of the control system is connected to the input end of the humidification system; wherein, the image recognition system is used to collect the current image information of leafy vegetables and identify the heartburn situation of leafy vegetables, and then send the abnormal information of the heartburn situation of leafy vegetables to the control system; the humidity sensing system is used to collect the current environmental humidity information of leafy vegetables and send the current environmental humidity information of leafy vegetables to the control system; the control system is used to receive the abnormal information of the heartburn situation of leafy vegetables and the current environmental humidity information of leafy vegetables, compare the current environmental humidity information of leafy vegetables with a preset environmental humidity value, and control the humidification system to adjust the environmental humidity to the preset environmental humidity value.

[0020] It should be understood that when leafy vegetable seedlings are newly planted in a plant factory, in order to accelerate the growth of leafy vegetables, generally a relatively high environmental humidity (such as 70% RH - 80% RH) and a relatively long photoperiod (such as 14h - 18h) are adopted. When the image recognition system in the device of the embodiment of the present invention recognizes an abnormal heartburn situation of leafy vegetables, it is still in time to adjust the environmental humidity and photoperiod.

[0021] When the image recognition system recognizes that the center of the leafy vegetable begins to show heartburn (such as more than 3 mm), it will automatically identify the leafy vegetable and send information to the control system. The control system will match the preset environmental humidity value with the current environmental humidity displayed by the humidity sensing system. If it is not the preset value (such as 40% RH - 50% RH), the control system will output the optimal humidity of the current growth stage of the leafy vegetable to the humidification system, and automatically control the humidification system to make the environmental humidity reach the preset value. Therefore, the device of the embodiment of the present invention can dynamically and precisely regulate the humidity and photoperiod during the whole growth period of leafy vegetables, reduce the heartburn rate of leafy vegetables, and provide technical support for improving the quality of leafy vegetables.

[0022] It can be understood that when the image recognition system does not recognize that the center of the leafy vegetable begins to show heartburn (such as more than 3 mm), the humidity sensing system will not be triggered to collect environmental humidity information and humidity adjustment instructions.

[0023] In some embodiments, the device further includes a light source system. The output end of the control system is connected to the input end of the light source system. The control system is further configured to receive the abnormal information about the leafy vegetable's core burning situation and control the light source system to adjust the light cycle. When the image recognition system recognizes that the core of the leafy vegetable begins to show core burning (for example, with a diameter of more than 3 mm), it will automatically identify the leafy vegetable and send information to the control system. While the control system regulates the humidification system, it will also be linked with the lighting system, output the optimal light cycle for the current growth stage of the leafy vegetable, and automatically regulate the lighting system so that the light cycle is the optimal light cycle.

[0024] In some embodiments, the image recognition system includes a camera module, an identification module, and a communication module. The camera module is used to collect the current image information of the leafy vegetable. The leafy vegetable database is stored in the identification module. The leafy vegetable database includes the image information of normal leafy vegetables at each growth stage. The identification module calls the leafy vegetable database to obtain the picture information of the normal leafy vegetable at the current growth stage and compares it with the current image information of the leafy vegetable collected by the camera module to identify the core burning situation of the leafy vegetable; the communication module is used to send the abnormal information about the core burning situation of the leafy vegetable to the control system. The leafy vegetable database needs to be established in advance. The image information of normal leafy vegetables at each growth stage can be collected by taking pictures of normal leafy vegetables at each growth stage through the camera module to generate the corresponding leafy vegetable database.

[0025] In some embodiments, when the image recognition system recognizes that the core of the leafy vegetable begins to show core burning with a diameter of more than 3 mm, the image recognition system sends the abnormal information about the core burning situation of the leafy vegetable to the control system. When the core burning is too small, intervening in the regulation of environmental humidity and lighting time in advance will cause the growth rate of the leafy vegetable to be too slow, which is not conducive to improving production efficiency.

[0026] In some embodiments, the preset value of the environmental humidity is 40%RH - 50%RH, such as 40%RH, 42%RH, 44%RH, 46%RH, 48%RH, 50%RH, etc. When the preset value of the environmental humidity is too small, it is not conducive to improving the growth rate of the leafy vegetable. When the preset value of the environmental humidity is too large, it is not conducive to reducing the dry heart rate of the leafy vegetable.

[0027] In some embodiments, after receiving the abnormal information about the core burning situation of the leafy vegetable, the control system controls the light source system to adjust the light cycle to 6h / d - 8h / d, such as 6h / d, 6.5h / d, 7h / d, 7.5h / d, 8h / d, etc. When the light cycle is too short, it is not conducive to improving the growth rate of the leafy vegetable. When the light cycle is too long, it is not conducive to reducing the dry heart rate of the leafy vegetable.

[0028] In some embodiments, the leafy vegetable is cruciferous and / or lettuce leafy vegetable.

[0029] In some embodiments, the plant factory is any one of a fully artificial light illumination plant factory, a solar light plus artificial supplementary light plant factory, a glass greenhouse plus artificial supplementary light plant factory, and a film greenhouse plus artificial supplementary light plant factory.

[0030] In a second aspect, an embodiment of the present invention further provides a method for reducing the heartburn rate of leafy vegetables in a plant factory. After the leafy vegetable seedlings are planted in the plant factory, the device of the first aspect is used to monitor and adjust the environmental humidity and photoperiod in real time.

[0031] The method of the embodiment of the present invention can dynamically and precisely adjust the humidity and photoperiod during the whole growth period of leafy vegetables through the device of the first aspect, reduce the heartburn rate of leafy vegetables, and provide technical support for improving the quality of leafy vegetables.

[0032] The present invention will be described in detail below with reference to embodiments.

[0033] Example 1

[0034] (1) Take out the leafy vegetable seeds from the refrigerator and soak them in clean water for 6h - 12h. This step is not required for coated seeds.

[0035] (2) Sow the soaked seeds into the soaked sponge blocks, with 1 seed per hole, and place them in a germination box at a temperature of 20 - 25°C and a humidity of 70%RH - 100%RH until germination.

[0036] (3) Cultivate the germinated seeds in the following environment:

[0037] Red light: blue light: white light ratio of 0.81:0.81:1 mixed light source, light intensity of 120 μmol / m 2 / s - 200 μmol / m 2 / s, photoperiod of 12h - 16h, environmental temperature of 20°C - 26°C, environmental humidity of 60%RH - 80%RH, nutrient solution temperature of 16°C - 20°C, EC value of 1.0 mS / cm - 1.5 mS / cm, pH value of 5.5 - 7.0, CO2 concentration of 500 ppm - 800 ppm.

[0038] (4) After 15 days of seedling raising, plant the leafy vegetable seedlings in the following environment:

[0039] Red light: blue light: white light ratio of 0.81:0.81:1 mixed light source, light intensity of 200 μmol / m 2 / s - 300 μmol / m 2 / s, the photoperiod is 14 h - 18 h, the environmental temperature is 20°C - 26°C, the nutrient solution temperature is 16°C - 20°C, the EC value is 1.8 mS / cm - 2.0 mS / cm, the pH value is 5.5 - 7.0, and the CO2 concentration is 500 ppm - 800 ppm.

[0040] (5) After planting, turn on the device of the first aspect, and use this device to monitor and real-time regulate the environmental humidity and photoperiod to reach the optimal conditions. Among them, the preset value of the environmental humidity is 50% RH, and the photoperiod is 8 h / d.

[0041] 28 days after planting, harvest the leafy vegetables, and count the dry heartburn rate of the leafy vegetables as 5%.

[0042] Comparative Example 1

[0043] The method of this comparative example is the same as that of Example 1, the only difference is that after planting, there is no device of the first aspect to monitor and real-time regulate the environmental humidity and photoperiod, and the leafy vegetable seedlings have been in the environmental conditions of step (4) during the process from planting to harvesting.

[0044] 28 days after planting, harvest the leafy vegetables, and count the dry heartburn rate of the leafy vegetables as 53%.

[0045] Comparative Example 2

[0046] The method of this comparative example is the same as that of Example 1, the only difference is that in step (5), manual observation is used to replace the device of the first aspect to adjust the environmental humidity and photoperiod of the leafy vegetable growth. When it is found that the leafy vegetables begin to show heartburn with a diameter of more than 3 mm, manually adjust the humidification system to reduce the environmental humidity to 50% RH, and manually adjust the photoperiod to 8 h / d.

[0047] 28 days after planting, harvest the leafy vegetables, and count the dry heartburn rate of the leafy vegetables as 27%. Manual observation is time-consuming and laborious, and it is very difficult to timely detect the abnormal situation of leafy vegetable heartburn. Therefore, the dry heartburn rate of the leafy vegetables in this comparative example is higher than that of Example 1.

[0048] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0049] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for reducing heartburn rate of leafy vegetables in a plant factory, characterized in that: include: Image recognition system, humidity sensing system, control system, humidification system; The output ends of the image recognition system and the humidity sensing system are connected to the input end of the control system, and the output end of the control system is connected to the input end of the humidification system; wherein the image recognition system is used to collect current image information of leafy vegetables and identify the burnt condition of leafy vegetables, and then send abnormal information about the burnt condition of leafy vegetables to the control system; the humidity sensing system is used to collect current environmental humidity information of leafy vegetables and send the current environmental humidity information of leafy vegetables to the control system; the control system is used to receive the abnormal information about the burnt condition of leafy vegetables and the current environmental humidity information of leafy vegetables, and compare the current environmental humidity information of leafy vegetables with a preset environmental humidity value, and control the humidification system to adjust the environmental humidity to the preset environmental humidity value.

2. The device according to claim 1, characterized in that It also includes a light source system. The output end of the control system is connected to the input end of the light source system. The control system is also used to receive abnormal information about the burning condition of the leafy vegetables and control the light source system to shorten the light cycle.

3. The device according to claim 1, characterized in that The image recognition system includes a camera module, an identification module and a communication module. The camera module is used to collect current image information of leafy vegetables. The identification module stores a leafy vegetable database, which includes image information of normal leafy vegetables at various growth stages. The identification module calls the leafy vegetable database to obtain image information of normal leafy vegetables at the current growth stage and compares it with the current image information of leafy vegetables collected by the camera module to identify the burnt condition of leafy vegetables. The communication module is used to send abnormal information on the burnt condition of leafy vegetables to the control system.

4. The device according to claim 1, characterized in that When the image recognition system recognizes that a burnt core with a diameter of more than 3 mm begins to appear in the center of the leafy vegetables, the image recognition system sends abnormal information about the burnt core of the leafy vegetables to the control system.

5. The device according to claim 1, characterized in that The preset value of the environmental humidity is 40%RH-50%RH.

6. The device according to claim 2, characterized in that After receiving the abnormal information about the burnt condition of the leafy vegetables, the control system controls the light source system to adjust the light cycle to 6h / d-8h / d.

7. The device according to claim 1, characterized in that The leafy vegetables are cruciferous and / or lettuce leafy vegetables.

8. The device according to claim 1, characterized in that The plant factory is any one of a fully artificial light-illuminated plant factory, a sunlight plus artificial light-supplemented plant factory, a glass greenhouse plus artificial light-supplemented plant factory, and a film greenhouse plus artificial light-supplemented plant factory.

9. A method for reducing heartburn rate of leafy vegetables in a plant factory, characterized in that: The method comprises the following steps: after the leafy vegetable seedlings are planted in the plant factory, the device described in any one of claims 1 to 8 is turned on to monitor and regulate the environmental humidity and light cycle in real time.