Cloud control system for a circulating nutrient solution using AI-based strawberry growth stage recognition.

Abstract

The present invention aims to provide a technology that minimizes environmental pollution by sterilizing and reusing the nutrient solution, taking into account that there are differences in the components required for each growth stage of a crop. To this end, the invention comprises: a strawberry cultivation bed; a supply nutrient solution tank for supplying the nutrient solution to the strawberry cultivation bed; a discharge nutrient solution storage tank through which the nutrient solution supplied to the strawberry cultivation bed passes and is discharged, and which stores the discharged nutrient solution; and a filtration sterilizer for filtering and sterilizing the nutrient solution stored in the discharge nutrient solution storage tank to supply it to the nutrient solution supply device. The present invention provides a nutrient solution supply system connected to the supply nutrient solution tank to supply fertilizer components of the nutrient solution, wherein the nutrient solution supply system is equipped with a macronutrient supply system and a micronutrient supply system, wherein the system calculates the types and amounts of necessary components by considering the growth stage of the strawberry being cultivated in the strawberry cultivation bed and the deficient components of the nutrient solution being used in circulation, and controls the macronutrient supply system and the micronutrient supply system by the nutrient solution supply control unit, wherein the system controls the nutrient solution supply system based on strawberry growth stage recognition, wherein the system measures the turbidity of the nutrient solution that has passed through the filter sterilizer and discharges it to a waste drainage tank if the turbidity is higher than a set value, otherwise transfers it to a treatment drainage tank, measures Na+ and Cl- ions before adding deficient components of the nutrient solution transferred to the treatment drainage tank to reuse the nutrient solution, discharges it to a waste drainage tank if the turbidity exceeds a standard value, otherwise transfers it to a supply nutrient solution tank for circulation use; and wherein the nutrient solution supply system is equipped with a macronutrient supply system and a micronutrient supply system, and the system controls the macronutrient supply system and the micronutrient supply system by the nutrient solution supply control unit. By supplying a precise nutrient solution control supply device that enables hydroponic farms to reuse nutrient solutions based on the configuration of the invention described above, this invention provides a technology that reduces the cost of nutrient solutions used in crop cultivation, prevents environmental pollution caused by nutrient solutions by reusing them, and offers energy saving effects through resource recycling.

Description

Technology Field

[0001] The present invention relates to a hydroponic strawberry cultivation system. More specifically, it relates to a hydroponic cultivation system controllable in a standalone and cloud control system. Background Technology

[0002] Prior art prior to the filing of the present invention discloses a smart nutrient solution supply management control system for uniform plant growth and improved production yield. This technology relates to a more advanced smart farm cultivation system capable of maximizing uniform plant growth, quality, and production yield. Specifically, it relates to a more advanced smart nutrient solution supply management control system composed of a system for manufacturing and regenerating an optimized nutrient solution used in plant cultivation, a near-infrared spectroscopic analysis system (FT-NIR) capable of selectively and quantitatively analyzing changes in nutrient solution components in real-time during manufacturing and regeneration, and a cloud-based smart nutrient solution supply management control system.

[0003] Another prior art discloses a technology relating to an integrated control system for hydroponic cultivation. This technology includes: an external environment measuring unit that generates external environment information by measuring external environments affecting the cultivation environment, including temperature, light intensity, and nutrient supply in a cultivation space where crops are cultivated; a cultivation environment measuring unit that generates cultivation environment information by measuring the cultivation environment; a cultivation environment control unit that controls the cultivation environment based on a received cultivation manual; a grower terminal that allows a grower to view integrated information on the cultivation space and inputs the cultivation manual to the cultivation environment control unit to control the cultivation environment in an integrated manner; and a configuration that receives the external environment information, the cultivation environment information, and the cultivation manual, stores them as integrated information on the cultivation space, and allows the grower to view the integrated information on the cultivation space through the connected grower terminal. Prior art literature

[0004] Published Patent Application 10-2023-0016106 Published Patent Application 10-2022-0096942 The problem to be solved

[0005] Existing nutrient solution management systems rely on determining the supply volume and concentration based on the user's (farmer's) experience. Consequently, for inexperienced beginners or those returning to farming, it was common practice to maintain a constant supply, cycle through crops for a set period, discard the solution, and replace it with fresh water. For this reason, there have been concerns that the disposal of waste nutrient solution could cause environmental problems.

[0006] The present invention aims to provide a technology that minimizes environmental pollution by sterilizing and reusing the nutrient solution, taking into account that there are differences in the components required by crops at different growth stages. means of solving the problem

[0007] To solve the above-mentioned problem, the following means for solving the problem is provided.

[0008] Strawberry cultivation bed; and

[0009] A supply nutrient solution tank for supplying nutrient solution to the above strawberry cultivation bed; and

[0010] The nutrient solution supplied to the strawberry cultivation bed passes through the strawberry cultivation bed and is discharged,

[0011] A discharged nutrient solution storage tank for storing the discharged nutrient solution; and

[0012] In order to supply the nutrient solution stored in the above discharge nutrient solution storage tank to the above nutrient solution supply device

[0013] A filter sterilizer that filters and sterilizes; and

[0014] The turbidity of the nutrient solution passing through the above filtration sterilizer is measured, and if the turbidity is higher than the set value, it is discharged into the waste drainage tank, otherwise it is transferred to the treatment drainage tank.

[0015] In order to reuse the nutrient solution transferred to the treatment drainage tank, before adding the deficient components of the nutrient solution, measure the Na+ and Cl- ions; if they exceed the standard values, discharge them into the waste drainage tank, otherwise transfer them to the supply nutrient solution tank for recirculation.

[0016] A nutrient solution supply device connected to the above-mentioned nutrient solution tank to supply fertilizer components of the nutrient solution; and

[0017] The above-mentioned nutrient solution supply device is equipped with a macronutrient supply device and a micronutrient supply device, and

[0018] The present invention provides a cloud control system for a circulating single-fertilizer nutrient solution system based on AI recognition of strawberry growth stages, characterized by calculating the types and amounts of necessary nutrients by considering the growth stage of strawberries being cultivated in the above-mentioned strawberry cultivation bed and the deficient components of the circulating nutrient solution, and controlling macronutrient and micronutrient suppliers from the nutrient solution supply control unit.

[0019] In addition, the growth stage of the strawberry is characterized by acquiring an image of the strawberry being cultivated from one or more image acquisition devices installed on the strawberry cultivation bed and transmitting the acquired image to a remote strawberry growth stage determination and nutrient solution composition controller, wherein the strawberry growth stage determination and nutrient solution composition controller determines the growth stage of the strawberry and transmits a nutrient solution composition suitable for the determined strawberry growth stage to the nutrient solution supply control unit, and the nutrient solution supply control unit controls the composition of the nutrient solution in the supply nutrient solution tank.

[0020] The above strawberry growth stage determination and nutrient solution composition controller provides a cloud control system for a circulating single-fertilizer nutrient solution through AI-based strawberry growth stage recognition, characterized by using an Artificial Intelligence model trained using 200,000 strawberry growth images consisting of the planting stage, budding stage, flowering stage, fruit enlargement stage, and harvesting stage for determining the strawberry growth stage.

[0021] The present invention provides a cloud control system for a circulating single-fertilizer nutrient solution system based on AI-based strawberry growth stage recognition, characterized in that the nutrient solution composition controller in the above-described strawberry growth stage determination and nutrient solution composition controller supplies new nutrient solution and starts circulating hydroponic cultivation, collects nutrient solution samples at regular time intervals, measures changes in the nutrient solution composition of the collected samples through precise analysis, and controls the composition of the nutrient solution circulating from the time of supply using the results calculated from the database data, utilizing the data stored in a database regarding the amount and absorption rate of components absorbed by the crop during cultivation.

[0022] In addition, the present invention provides a cloud control system for a circulating single-fertilizer nutrient solution system based on AI-based strawberry growth stage recognition, characterized in that when a pollinating bee is detected at one or more of the above-mentioned image acquisition devices during the flowering period, the strawberry growth stage determination and nutrient solution composition controller can additionally determine that pollination has been successful in the vicinity of the strawberry growth stage determination and nutrient solution composition controller. Effects of the invention

[0023] This technology provides a precise nutrient solution control supply device that enables hydroponic farms to reuse nutrient solutions, thereby reducing nutrient solution costs for crop cultivation, preventing environmental pollution caused by nutrient solutions through reuse, and offering energy saving effects through resource recycling.

[0024] Hydroponic cultivation systems that recirculate nutrient solution are considered an eco-friendly technology capable of being exported overseas. Brief explanation of the drawing

[0025] Figure 1 illustrates the overall system configuration of the present invention. Figure 2 shows the basic conditions for growth inhibition of strawberries for nutrient solution control according to the present invention. Figure 3 is a photograph of an embodiment of the nutrient solution control device of the present invention. Figure 4 is a conceptual diagram illustrating the circulation of the nutrient solution in the nutrient solution supply device of the present invention. Figure 5 is a configuration diagram of a cloud-distributed control single-span greenhouse using the nutrient solution supply device of the present invention. Figure 6 is a conceptual diagram of the development of the nutrient solution supply device of the present invention. Figure 7 illustrates five stages for distinguishing growth stages in the present invention. Figure 8 illustrates a step in the present invention of creating a database of changes in nutrient solution components according to growth through experiments in advance to predictively control the state of the nutrient solution without feedback control of the nutrient solution components. Specific details for implementing the invention

[0026] The effects of the present invention are explained using the drawings as follows.

[0027] Figure 1 illustrates the overall system configuration of the present invention. Starting from the bottom left, strawberry growth data and nutrient solution supply data for each of the five strawberry growth stages are acquired from the container farm and transmitted to a cloud system. The growth stage and physiological disorders of the strawberries are then identified. If normal growth is detected, a nutrient solution composition suitable for normal growth is transmitted from the cloud to the nutrient solution controller; if a physiological disorder is detected, a nutrient solution composition capable of overcoming the corresponding disorder is transmitted. Subsequently, the cloud-based nutrient solution controller supplies the nutrient solution to the cultivation bed. Although it is described as cloud-based, it is possible to configure and supply the nutrient solution according to the basic growth stages without a cloud connection. However, if connected to the strawberry growth stage determination and nutrient solution composition controller configured in the cloud, images of the cultivation bed can be transmitted to determine the growth stage and physiological disorders. Based on this, the nutrient solution composition is optimized and transmitted to the strawberry growth stage determination and nutrient solution composition controller, thereby enabling optimal cultivation. This is one of the key features of the present invention.

[0028] Figure 2 illustrates the basic conditions for growth inhibition in strawberries for nutrient solution control according to the present invention. It compares physiological disorders that may occur at each growth stage of strawberries with the causes that induce such disorders. In other words, if a physiological disorder can be detected, the disorder can be overcome by resolving the cause of the disorder. Well-known physiological disorders regarding strawberry growth are illustrated in the figure.

[0029] FIG. 3 is a photograph of an embodiment of the nutrient solution control device of the present invention. In order to supply the components of the nutrient solution to the nutrient solution supply tank, the components are divided into several tanks and supplied to the nutrient solution supply tank by component or by grouping the components, and the nutrient solution for supply is made by mixing with raw water (water).

[0030] Figure 4 is a conceptual diagram illustrating the circulation of nutrient solution in the nutrient solution supply device of the present invention. As previously explained, it can be seen that the flow of all nutrient solutions is generated centered around the supply nutrient solution tank. For example, five large-quantity nutrient solution tanks, three small-quantity nutrient solution tanks, and raw water are connected to the supply nutrient solution tank. The supply nutrient solution is produced by controlling the five large-quantity nutrient solution tanks, three small-quantity nutrient solution tanks, and raw water according to the component ratio of the set components. The produced supply nutrient solution is supplied to the strawberry cultivation bed, and the supplied nutrient solution is discharged from the strawberry cultivation bed through the outlet. The discharged nutrient solution is stored in a storage drainage tank, and after filtering out foreign substances and sterilizing it, the turbidity is measured; if it remains turbid above the set value even after filtration, it is treated as waste nutrient solution and discharged. The filtered and disinfected nutrient solution is stored in a treatment drainage tank, and the concentrations of Na+ and Cl- ions are measured; if they exceed the set concentration, it is determined that the nutrient solution cannot be circulated and discharged as waste nutrient solution. When the turbidity and the concentrations of Na+ and Cl- ions are determined to be suitable for circulation, the solution is transferred to the supply nutrient tank. Nutrient components are supplied from the five large-quantity nutrient tanks and three small-quantity nutrient tanks to the supply nutrient tanks according to the composition and composition ratio of the nutrient solution set based on the amount of circulation nutrient solution and the strawberry cultivation stage. The supply is carried out by the nutrient supply control unit, which may operate independently or be connected via communication to the strawberry growth stage determination and nutrient solution composition controller of the cloud system to receive nutrient solution composition data from the strawberry growth stage determination and nutrient solution composition controller.

[0031] FIG. 5 is a configuration diagram of a cloud-distributed control single-span greenhouse using the nutrient solution supply device of the present invention. The entire system is composed of a controller connected to the entire system, actuators configured for each single-span greenhouse, and sensor nodes connected to each actuator. The controller and the cloud server are configured, and mobile devices such as PCs and smartphones that can be used as terminals are connected to the cloud server via communication to monitor and control the status of each single-span greenhouse. Of course, monitoring and controlling can also be done simultaneously.

[0032] Figure 6 is a conceptual diagram of the development of the nutrient solution supply device of the present invention. Strawberry growth data was collected to build an AI discrimination model for each strawberry growth stage, and a database was built by offline testing of the nutrient solution components that are heavily consumed at each growth stage. Using the built data, a nutrient solution control algorithm for each strawberry growth stage was developed, and a circulating nutrient solution controller was developed by linking the developed control platform with the circulating nutrient solution controller so that the circulating nutrient solution controller can be operated remotely from the cloud.

[0033] Figure 7 illustrates five stages for distinguishing growth stages in the present invention. These are the planting stage, the budding stage, the flowering stage, the fruit enlargement stage, and the harvesting stage. An artificial intelligence model capable of identifying the five growth stages was developed through AI learning using approximately 20,000 images of each stage and embedded in a cloud server system. By doing so, one or more image acquisition systems are provided for each single-span greenhouse, and when these are uploaded to the cloud server in real time via a controller, the cloud server determines the growth stage of the strawberry. It then links this with the nutrient solution composition controller embedded in the cloud server and the nutrient solution composition DB for each strawberry growth stage to transmit the optimal nutrient solution composition ratio for the corresponding single-span greenhouse from the cloud server to the controller. Additionally, the circulating nutrient solution controller linked to the controller receives the nutrient solution composition data, changes the composition of the supplied nutrient solution, and supplies it to the strawberry cultivation bed.

[0034] Figure 8 illustrates the step of generating a nutrient solution composition database for each growth stage through experiments on changes in nutrient solution components according to growth in order to predict and control the state of the nutrient solution without feedback control of the nutrient solution components in the present invention.

[0035] The nutrient solution composition database for each growth stage of the strawberry used in the above-mentioned nutrient solution composition controller was constructed by sampling the nutrient solution during the actual cultivation process and verifying the components of the nutrient solution consumed at each stage of strawberry cultivation through precise component analysis.

[0036] To this end, fresh nutrient solution was supplied and circulating hydroponic cultivation was initiated. Nutrient solution samples were collected at regular intervals, and changes in the composition of the collected samples were subjected to precise component analysis. From this, the amount of components absorbed by strawberries during the cultivation process and the absorption rate were stored in a database. Since the purpose of the present invention is to use a circulating nutrient solution, the components of the nutrient solution required for each stage of strawberry cultivation were determined through the process of replenishing the consumed amount of nutrient solution via precise component analysis and supplying the solution again for cultivation.

[0037] Using the nutrient solution composition database for each strawberry growth stage obtained in this way, the composition of the circulating nutrient solution is calculated, and the composition of the nutrient solution required for each strawberry growth stage is read from the aforementioned database. After calculating the composition and amount of the nutrient solution remaining in the nutrient solution supply tank, the nutrient solution supply control unit supplies additional nutrient solutions of each type to match the nutrient solution composition for each strawberry growth stage.

[0038] The present invention further provides a means to verify whether pollination by pollination bees is successfully occurring inside a container farm during the flowering period by using images of pollination bees for learning. Specifically, it is possible to calculate whether pollination is sufficient by utilizing the number of times images of honeybees are captured in images acquired during the flowering period. If it is insufficient, this information is provided to the user or farmer, allowing them to introduce more pollination bees or perform pollination manually.

[0039] The composition of the invention for exhibiting the above-mentioned effects is as follows.

[0040] Strawberry cultivation bed; and

[0041] A supply nutrient solution tank for supplying nutrient solution to the above strawberry cultivation bed; and

[0042] The nutrient solution supplied to the strawberry cultivation bed passes through the strawberry cultivation bed and is discharged,

[0043] A discharged nutrient solution storage tank for storing the discharged nutrient solution; and

[0044] In order to supply the nutrient solution stored in the above discharge nutrient solution storage tank to the above nutrient solution supply device

[0045] A filter sterilizer that filters and sterilizes; and

[0046] The turbidity of the nutrient solution passing through the above filtration sterilizer is measured, and if the turbidity is higher than the set value, it is discharged into the waste drainage tank, otherwise it is transferred to the treatment drainage tank.

[0047] In order to reuse the nutrient solution transferred to the treatment drainage tank, before adding the deficient components of the nutrient solution, measure the Na+ and Cl- ions; if they exceed the standard values, discharge them into the waste drainage tank, otherwise transfer them to the supply nutrient solution tank for recirculation.

[0048] A nutrient solution supply device connected to the above-mentioned nutrient solution tank to supply fertilizer components of the nutrient solution; and

[0049] The above-mentioned nutrient solution supply device is equipped with a macronutrient supply device and a micronutrient supply device, and

[0050] The present invention provides a cloud control system for a circulating single-fertilizer nutrient solution system based on AI recognition of strawberry growth stages, characterized by calculating the types and amounts of necessary nutrients by considering the growth stage of strawberries being cultivated in the above-mentioned strawberry cultivation bed and the deficient components of the circulating nutrient solution, and controlling macronutrient and micronutrient suppliers from the nutrient solution supply control unit.

[0051] In addition, the growth stage of the strawberry is characterized by acquiring an image of the strawberry being cultivated from one or more image acquisition devices installed on the strawberry cultivation bed and transmitting the acquired image to a remote strawberry growth stage determination and nutrient solution composition controller, wherein the strawberry growth stage determination and nutrient solution composition controller determines the growth stage of the strawberry and transmits a nutrient solution composition suitable for the determined strawberry growth stage to the nutrient solution supply control unit, and the nutrient solution supply control unit controls the composition of the nutrient solution in the supply nutrient solution tank.

[0052] The present invention provides a cloud control system for a circulating single-fertilizer nutrient solution system based on AI-based strawberry growth stage recognition, characterized by using an Artificial Intelligence model trained using 20,000 strawberry growth images consisting of the planting stage, budding stage, flowering stage, fruit blight stage, and harvesting stage for determining the strawberry growth stage of the above-mentioned strawberry growth stage and nutrient solution composition controller.

[0053] The present invention provides a cloud control system for a circulating single-fertilizer nutrient solution system based on AI-based strawberry growth stage recognition, characterized in that the nutrient solution composition controller in the above-described strawberry growth stage determination and nutrient solution composition controller supplies new nutrient solution and starts circulating hydroponic cultivation, collects nutrient solution samples at regular time intervals, measures changes in the nutrient solution composition of the collected samples through precise analysis, and controls the composition of the nutrient solution circulating from the time of supply using the results calculated from the database data, utilizing the data stored in a database regarding the amount and absorption rate of components absorbed by the crop during cultivation.

[0054] In addition, the present invention provides a cloud control system for a circulating single-fertilizer nutrient solution system based on AI-based strawberry growth stage recognition, characterized in that when a pollinating bee is detected at one or more of the above-mentioned image acquisition devices during the flowering period, the strawberry growth stage determination and nutrient solution composition controller can additionally determine that pollination has been successful in the vicinity of the strawberry growth stage determination and nutrient solution composition controller.

Claims

Claim 1 A strawberry cultivation bed; and a supply nutrient solution tank for supplying nutrient solution to the strawberry cultivation bed; and a discharge nutrient solution storage tank through which the nutrient solution supplied to the strawberry cultivation bed passes and is discharged, and which stores the discharged nutrient solution; and a filtration sterilizer for filtering and sterilizing the nutrient solution stored in the discharge nutrient solution storage tank to supply it to a nutrient solution supplyer; and a nutrient solution supplyer connected to the supply nutrient solution tank to supply fertilizer components of the nutrient solution, which measures the turbidity of the nutrient solution that has passed through the filtration sterilizer and discharges it to a waste drainage tank if the turbidity is higher than a set value, and otherwise transfers it to a treatment drainage tank, and measures Na+ and Cl- ions before adding deficient components to the nutrient solution transferred to the treatment drainage tank to reuse it and discharges it to a waste drainage tank if the standard value is exceeded, and otherwise transfers it to a supply nutrient solution tank for recirculation.The above-mentioned nutrient solution supply unit is equipped with a macronutrient supply unit and a micronutrient supply unit, and the type and amount of necessary components are calculated by considering the growth stage of the strawberries being cultivated in the strawberry cultivation bed and the deficient components of the circulating nutrient solution, and the macronutrient supply unit and micronutrient supply unit are controlled by the nutrient solution supply unit control unit; the growth stage of the strawberries is determined by acquiring images of the strawberries being cultivated from one or more image acquisition devices installed in the strawberry cultivation bed and transmitting the acquired images to a remote strawberry growth stage determination and nutrient solution composition controller, wherein the strawberry growth stage determination and nutrient solution composition controller determines the growth stage of the strawberries and transmits a nutrient solution composition suitable for the determined strawberry growth stage to the nutrient solution supply unit control unit, and the nutrient solution supply unit control unit controls the composition of the nutrient solution in the supply nutrient solution tank; the strawberry growth stage determination of the strawberry growth stage determination and nutrient solution composition controller is learned using 20,000 strawberry growth images consisting of the planting stage, budding stage, flowering stage, fruit ripening stage, and harvesting stage A cloud control system for a circulating single-fertilizer nutrient solution system based on AI recognition of strawberry growth stages, characterized by using an Artificial Intelligence model, wherein the nutrient solution composition controller in the strawberry growth stage determination and nutrient solution composition controller supplies new nutrient solution and starts circulating hydroponic cultivation, collects nutrient solution samples at regular time intervals, measures changes in the nutrient solution composition of the collected samples through precise analysis, and controls the composition of the nutrient solution circulating from the time of supply using the results calculated from the database data, utilizing the data stored in a database regarding the amount and absorption rate of components absorbed by the crop during cultivation. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 A circulating single-fertilizer nutrient solution cloud control system based on AI-based strawberry growth stage recognition, characterized in that, in the first aspect, when a bee is detected during the flowering period in one or more image acquisition devices, the strawberry growth stage determination and nutrient solution composition controller can additionally determine that pollination has been successful in the vicinity of the strawberry growth stage determination and nutrient solution composition controller.

Images