TWI843267B - Nutrient solution preparation control method for crops, device, apparatus, and storage medium - Google Patents

Abstract

The present application provides a nutrient solution preparation control method for crops, a device, an apparatus and a storage medium. The method includes determining a growth state of crops according to obtained growth data of the crops based on a pre-established crop database, the crop database storing different growth states of a plurality of crops in multiple growth stages and a proportion of nutrient solution corresponding to each growth state; determining a proportion of nutrient solution required by the crops based on the determined growth state of the crops, and adjusting culture medium according to the proportion of nutrient solution;, determining an updated growth state of the crops after a preset time period, and in response that the culture medium does not meet a proportion of nutrient solution corresponding to updated growth state, adjusting the culture medium again until the culture medium meets the proportion of nutrient solution corresponding to the growth state of the crops. By utilizing this application, the proportion of nutrient solution in a cultivation box can be dynamically adjusted according to changed growth stage of the crops to facilitate the growth of the crops.

Description

Crop nutrient solution preparation control method, device, equipment and storage medium

This application involves the field of smart agricultural technology, and in particular, involves a crop nutrient solution preparation control method, device, equipment and storage medium.

Smart plant factories use hydroponic cultivation to grow crops without being affected by climate. However, in plant factories, how to adjust the composition of the culture solution is related to the success or failure of the entire hydroponic cultivation, which is a technical problem that needs to be solved urgently for the intelligent cultivation of plants.

In view of this, it is necessary to provide a crop nutrient solution preparation control method, device, equipment and storage medium, which can automatically adjust the nutrient solution ratio according to the plant growth status.

A crop nutrient solution preparation control method, the method comprising: obtaining crop growth data; determining the growth state of the crop based on the crop growth data based on a pre-established crop database, the crop database including the growth states of multiple crops in multiple growth stages and the nutrient solution ratio corresponding to each growth state; determining the nutrient solution ratio required by the crop based on the crop growth state; adjusting the culture solution according to the nutrient solution ratio; determining the updated growth state of the crop after a preset time; if the culture solution does not meet the nutrient solution ratio corresponding to the updated growth state, adjusting the culture solution again until the culture solution meets the nutrient solution ratio corresponding to the growth state of the crop.

In one embodiment, determining the growth status of the crop includes monitoring the water level change in the water tank where the crop is planted; when the water level drops to a set threshold, obtaining the growth image of the crop through an image sensing device, identifying the growth image and obtaining the growth data of the crop; comparing the growth data of the crop with the crop data in the crop database to determine the growth status of the crop.

In one embodiment, the crop growth state is determined based on the crop growth data based on a pre-established crop database, and the crop database includes the growth state of multiple crops in multiple growth stages and the nutrient solution ratio corresponding to each growth state, including: determining the growth cycle and health state of the crop based on the growth state of the crop; determining the optimized nutrient solution ratio based on the growth cycle and health state of the crop. According to an optional embodiment of the present application, adjusting the culture solution based on the nutrient solution ratio includes: adding water to the water tank; adding one or more culture solutions and preset chemicals to the water tank at a preset ratio; stirring the culture solution in the water tank; starting the water circulation and continuing the preset time.

In one embodiment, if the culture solution does not meet the nutrient solution ratio corresponding to the updated growth state, the culture solution is adjusted again until the culture solution meets the nutrient solution ratio corresponding to the growth state of the crop, including: confirming whether the conductivity EC value and the acid-base pH value in the culture solution meet the requirements; if the pH value is too high, adding sulfuric acid to lower the pH value; if the pH value is too low, adding water to increase the pH value; if the EC value is too high, adding water to lower the EC value; if the EC value is too low, adding one or more preset culture solutions according to the preset ratio.

In one embodiment, the method further includes monitoring the water level in the crop water tank using a water level monitor.

In one embodiment, the method further includes establishing the crop database based on the growing characteristics, growth cycle, and health status of each crop.

The present application also provides a crop nutrient solution dispensing control device, the device comprising: an acquisition module, used to acquire crop growth data, based on a pre-established crop database, determine the growth status of the crop according to the crop growth data, the crop database includes the growth status of multiple crops in multiple growth stages and the nutrient solution ratio corresponding to each growth status; a determination module, used to determine the growth status of the crop based on the growth status of the crop The module is used to determine the nutrient solution ratio required by the crop according to the state; the regulating module is used to regulate the culture solution according to the nutrient solution ratio; the updating module is used to determine the updated growth state of the crop after a preset time; the judging module is used to adjust the culture solution again until the culture solution meets the nutrient solution ratio corresponding to the growth state of the crop if the culture solution does not meet the nutrient solution ratio corresponding to the updated growth state.

The present application also provides a regulating device, which includes a storage body and at least one processor, wherein at least one instruction is stored in the storage body, and when the at least one instruction is executed by the at least one processor, the crop nutrient solution preparation control method is implemented.

This application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores at least one instruction, and when the at least one instruction is executed by a processor, the crop nutrient solution preparation control method is implemented.

This application is based on the above technical solution. The image processing technology and algorithm are used to automatically judge the growth status of crops. The culture solution is adjusted in real time according to the success stage and growth status of the crops, so that the EC value and pH value of the crop culture solution are kept in the optimal ratio, so as to efficiently carry out crop cultivation and adjust the crop culture solution to the optimal state in a short time. The program is simple and no manual on-site inspection is required, reducing human resources.

1: Adjustment equipment

12: Storage

13: Processor

20: Crop nutrient solution mixing control device

201: Confirm module

202: Adjustment module

203: Update module

204: Judgment module

S10~S60: Steps

Figure 1 shows a flow chart of a crop nutrient solution preparation control method provided by the preferred embodiment of this application.

Figure 2 shows a schematic diagram of a crop nutrient solution preparation control device provided in a preferred embodiment of this application.

Figure 3 shows a schematic diagram of the regulating device provided by the preferred embodiment of this application.

In order to more clearly understand the above-mentioned purpose, features and advantages of this application, the following is a detailed description of this application in conjunction with the attached drawings and specific embodiments. It should be noted that the embodiments of this application and the features in the embodiments can be combined with each other without conflict.

In the following description, many specific details are explained to facilitate a full understanding of this application. The embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative labor are within the scope of protection of this application.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application. The terms used in this specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

The terms "first", "second", "third", etc. in the specification, patent scope and drawings of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the term "including" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

The current smart plant factory uses hydroponic cultivation, which is not affected by climate and allows crops to grow well in all seasons. However, the current nutrient solution preparation is determined by manual on-site inspection to determine whether the nutrient solution ingredients are appropriate. However, the adjustment of nutrient solution by manual on-site inspection is inefficient, requires more manpower, and cannot instantly and accurately adjust the nutrient solution ratio to the most suitable situation for the current growth status of the crop.

In order to solve the above technical problems, this application provides a crop nutrient solution preparation control method, which uses image processing technology and algorithms to automatically judge the growth status of crops, and adjust the culture solution in real time according to the growth stage and growth status of crops, thereby efficiently and conveniently adjusting the culture solution of crops. The crop nutrient solution preparation control method is applied to one or more adjustment devices.

Please refer to Figure 1, which is a flow chart of a crop nutrient solution preparation control method provided in the embodiment of this application. According to different needs, the order of the steps in the flow chart can be changed, and some steps can be omitted.

S10, obtain crop growth data.

In the embodiment of the present application, the regulating device determines the growth data of the crop by monitoring the water level change in the water tank where the crop is planted. For example, the water level can be detected by setting up one or more water level monitors in the water tank of the crop culture solution to monitor the depth of the culture solution in the water tank in real time. When the water level in the water tank is lower than the preset water level threshold, the growth image of the crop is obtained through the image acquisition device, the growth image is identified and the growth data of the crop is obtained.

The water level monitor can be a water level sensor, which refers to an instrument that can instantly convert the water level parameter of the measured point into a corresponding electrical signal. The working principle of the water level sensor includes: transmitting the sensed water level signal to the controller of the regulating device, and the calculation element in the controller compares the measured water level signal with the set signal to obtain the deviation, and then according to the nature of the deviation, sends "open" and "close" instructions to the water supply electric valve to ensure that the container reaches the set water level.

Specifically, in the embodiment provided by the present application, an image acquisition device is set up in the crop monitoring area, and the water level sensor sends the sensed water level signal to the regulating device. The regulating device compares the received water level signal with the set signal to obtain a deviation. If the deviation is a negative value, it indicates that the water level has dropped and is lower than the preset water level threshold. The regulating device issues an opening instruction to the water supply electric valve according to the deviation, and at the same time sends an image acquisition signal to the image acquisition device. The image acquisition device collects images of the crop and transmits the images to the regulating device. In addition, in other embodiments, the image acquisition device can also monitor the growth of crops in real time and transmit the images collected in real time to the regulating device. The regulating device stores the acquired images and identifies the received images after issuing an opening command to the water supply electric valve.

The processing and identification of the image by the regulating device may include but is not limited to: binarizing the image to obtain a binarized image; determining the density information of the crops in each planting area based on the binarized image; extracting the color parameters of the image corresponding to each planting area, and determining the growth cycle and health status of the crops in each planting area based on the color parameters; determining the height information of the crops in each planting area based on the height of the image collection device and the internal and external parameters of the image collection device; determining the growth data of the current crops corresponding to each planting area based on the density information, growth cycle and health status and the height information.

Optionally, the color parameter can be the color value of the three primary colors red, green and blue (RGB) in the color system. The maturity of crops in various planting areas can be determined based on the RGB color value. The maturity parameters corresponding to different crop varieties are stored in advance, such as the color of leaves, buds, flowers and fruits, etc. The RGB color value in the image is compared with the maturity parameters corresponding to the crop variety, so as to determine the maturity information of crops in various planting areas.

S20, based on a pre-established crop database, determining the growth status of the crop according to the growth data of the crop, the crop database includes the growth status of multiple crops in multiple growth stages and the nutrient solution ratio corresponding to each growth status.

In one embodiment, a crop database is pre-established for crops that need to be planted, and the database includes the growth cycle of the crops and the growth corresponding to the multiple growth cycles.

In this embodiment, the growth cycle of the crop can be determined to be T growth periods (T is a positive integer). For example, taking the growth cycle of the crop including germination, growth, flowering, and fruiting as an example, the growth cycle of the crop can be divided into four growth periods (that is, T is equal to 4). The first growth period is the germination period, the second growth period is the growth period, the third growth period is the flowering period, and the fourth growth period is the fruiting period. Each growth period can optionally correspond to a different nutrient solution index, and the nutrient solution index can include an electrical conductivity (EC) value and a pH value. For each growth period of the crop, a preferred EC value and pH value range can be set. The above is only an example, and it can be divided into more or fewer growth periods in actual application.

In one embodiment, the crop database also includes the health status of the crops, including parameters such as the color and size of the leaves corresponding to each growth period, the density of the branches and leaves, and the thickness of the stems to characterize the health status of the crops, and determine the optimized nutrient solution ratio for different health status.

In one embodiment, the growth data of the crop is compared with the crop data in the crop database to determine the growth status of the crop.

S30, determining the nutrient solution ratio required by the crop based on the growth status of the crop.

In one embodiment, the culture solution ratio includes the ratio of one or more culture solutions and sulfuric acid solution. According to the growth status of the crop, the nutrient solution ratio/concentration corresponding to the growth status of the crop is obtained in the crop database, and the ratio of one or more culture solutions and sulfuric acid solution is determined according to the obtained nutrient solution ratio/concentration.

For example, the multiple culture solutions may include one or more culture solutions and sulfuric acid solutions, etc., which are pre-configured culture solutions, and each culture solution contains nutrients of preset concentrations for crop growth. For example, the nutrients may include nutrients and trace elements required by crops, and the nutrients may include nitrogen, phosphorus, potassium, calcium, magnesium, sulfur and other elements, and the trace elements may include iron, manganese, zinc, copper, molybdenum, boron, chlorine and other elements. By mixing one or more culture solutions and sulfuric acid solutions in a set ratio, a culture solution with the required EC value and pH value can be prepared.

Take pH adjustment as an example. The monitored culture medium of the crop is 10 liters and the current pH value of the culture medium is 6. The target pH value corresponding to the current growth stage of the crop is 5. Sulfuric acid can be added. The pH value of sulfuric acid H2SO4 is 2. First, add 100 liters of culture medium A to the stirring tank of the regulating equipment. The current pH value of culture medium A is 7. The amount of sulfuric acid to be added to culture medium A needs to be calculated. The total amount of hydrogen ions (H+) contained in 100L of culture medium A and 10L of the crop culture medium is: 100L*10-7mol/L+10L*10-6mol/L=2*10-5mol; the target amount of hydrogen ions (H+) is 110L*10-5mol/L=110*10-5mol, so the amount of hydrogen ions (H+) that needs to be supplemented is shown in the following formula: 11 0*10-5mol-2*10-5mol=108*10-5mol; the amount of hydrogen ions (H+) contained in each L of sulfuric acid is 2*10-5mol, so the amount of sulfuric acid H2SO4 that needs to be added to the culture medium A is 108*10-5mol%2*10-5mol/L=0.108L, that is, 108 ml of sulfuric acid H2SO4 needs to be added.

S40, adjusting the culture solution according to the ratio of the nutrient solution.

The nutrient solution is a culture solution prepared for a certain crop and contains a specific nutrient content, which is used to be directly added to the crop culture dish. The culture solution is one or more general culture solutions used for preparation.

In one embodiment, a certain amount of water is added to the water tank, and one or more culture solutions and/or preset chemicals are added to the water tank in a preset ratio to adjust the culture solution. For example, in this embodiment, one or more culture solutions and chemicals can be injected into the water tank according to the nutrient solution ratio determined in step S30. In this embodiment, 108 ml of sulfuric acid is added to 100 liters of culture solution A to obtain 110 liters of culture solution. After the injection is completed, the culture solution in the water tank is stirred by a stirrer, and the 110 liters of culture solution stirred evenly is injected into the crop culture device, and the water circulation is turned on and continued for a preset time.

In one embodiment, the crop may be in a poor growth state before the culture solution is added, which may not be the crop's current true growth state. Therefore, after the culture solution is added, the water loop is turned on and continues to run for a preset time, so that the crop can show its true growth state only after fully absorbing the culture solution.

S50, after a preset time, determine the updated growth status of the crop.

After adjusting the culture solution and injecting the culture solution and executing a water cycle of a preset length, the crop image is recollected to obtain the crop growth data, and based on the pre-established crop database, the crop growth state of the crop is determined according to the crop growth data, and according to the updated growth state, it is judged whether the culture solution of the crop meets the nutrient solution ratio corresponding to the growth state of the crop. In one embodiment, if the nutrient solution ratio is within a certain range and corresponds to a preset preferred value, it can be determined whether the culture solution of the crop corresponds to the preferred nutrient solution ratio according to the crop growth state of the crop, and by using the preferred nutrient solution ratio, better nutrition can be provided for crop growth.

S60, detecting the nutrient components of the culture solution, and determining whether the culture solution meets the nutrient solution ratio corresponding to the updated growth state. If the culture solution does not meet the nutrient solution ratio corresponding to the updated growth state, the process returns to step S30, and the culture solution is adjusted again until the culture solution meets the nutrient solution ratio corresponding to the growth state of the crop.

In the embodiment of the present application, each water tank can be equipped with an independent EC value detector, a pH value detector and an automatic switch valve for adding culture solution. The EC value detector is used to detect the EC value in the crop culture solution and determine whether the EC value in the crop culture solution is the preferred EC value. The pH detector is used to detect the pH value in the crop culture solution and determine whether the pH value in the crop culture solution is the preferred pH value.

If the pH value is too high, the amount of sulfuric acid to be added is calculated according to the pH value detected by the pH detector, and sulfuric acid is added to lower the pH value; if the pH value is too low, the amount of water to be added is calculated according to the pH value detected by the pH detector, and the regulating device opens the automatic switch valve for adding culture solution, adds the required water, and increases the pH value; if the pH value is too low, the amount of water to be added is calculated according to the pH value detected by the pH detector, and the regulating device opens the automatic switch valve for adding culture solution, adds the required water, and increases the pH value; If the EC value is too high, the water to be supplemented is calculated according to the EC value detected by the EC value detector, and the regulating device opens the automatic switch valve for adding culture solution, adds the required water, and reduces the EC value; if the EC value is too low, the nutrient solution to be supplemented is calculated according to the EC value detected by the EC value detector, and one or more preset culture solutions are added according to the preset proportion.

In one embodiment, the detector sends the collected data to the controller of the regulating device, and the controller compares the collected data with the preset warning value. When the values are higher or lower than the preset warning value, the controller will issue a warning to remind people to pay attention to the growth status of the crop.

The crop nutrient solution preparation control method provided in this application calculates the proportion of nutrient solution to be added to the crop according to the growth stage and growth status of the collected crops, and adjusts the nutrient solution of the crop efficiently and conveniently.

As shown in FIG2, it is a functional module diagram of a preferred embodiment of the crop nutrient solution preparation control device of the present application. The crop nutrient solution preparation control device 20 includes a determination module 201, a regulation module 202, an update module 203 and a judgment module 204. The module/unit referred to in the present application refers to a series of computer program segments that can be executed by the processor 13 and can complete fixed functions, which are stored in the memory 12. In this embodiment, the functions of each module/unit will be described in detail in the subsequent embodiments.

Determination module 201, used to determine the nutrient solution ratio required by the crop based on the growth status of the crop; Adjustment module 202, used to adjust the culture solution according to the nutrient solution ratio; Update module 203, used to determine the updated growth status of the crop after a preset time; Judgment module 204, used to adjust the culture solution again until the culture solution meets the nutrient solution ratio corresponding to the growth status of the crop if the culture solution does not meet the nutrient solution ratio corresponding to the updated growth status.

Referring to FIG. 3 , the regulating device 1 includes, but is not limited to, a memory 12 and a processor 13. It is understood by those skilled in the art that the structure shown in FIG. 3 does not constitute a limitation on the regulating device 1 , and may include fewer or more components than shown, or combine certain components, or arrange components differently.

The regulating device is a device that can automatically perform numerical calculations and/or information processing according to pre-set or stored instructions, and its hardware includes but is not limited to microprocessors, application specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), digital signal processors (DSP), embedded devices, etc.

The regulating device can be any electronic product that can interact with the user, such as a personal computer, a tablet computer, a smart phone, a personal digital assistant (PDA), a game console, an interactive network television (IPTV), a wearable smart device, etc.

The regulating device may also include network equipment and/or user equipment. The network equipment includes, but is not limited to, a single network server, a server group consisting of multiple network servers, or a cloud consisting of a large number of hosts or network servers based on cloud computing.

The network where the regulating device is located includes but is not limited to the Internet, wide area network, metropolitan area network, local area network, virtual private network (VPN), etc.

The processor 13 may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete component gate circuits or transistor components, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor 13 may be any conventional processor, etc. The processor 13 is the control center of the regulating device 1, and uses various interfaces and lines to connect the various parts of the entire regulating device 1.

The memory 12 can be used to store the computer program and/or module/unit, and the processor 13 realizes various functions of the regulating device 1 by running or executing the computer program and/or module/unit stored in the memory 12 and calling the data stored in the memory 12. The memory 12 can mainly include a program storage area and a data storage area, wherein the program storage area can store operating devices, applications required for at least one function (such as sound playback function, image playback function, etc.), etc.; the data storage area can store data created according to the use of the regulating device 1 (such as audio data, phone book, etc.), etc. In addition, the memory 12 may include a high-speed random access memory, and may also include a non-volatile memory, such as a hard disk, memory, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a memory card (Flash Card), at least one disk storage element, or other non-volatile solid-state storage elements.

In conjunction with FIG. 3 , the memory 12 in the regulating device 1 stores a plurality of instructions to implement a method for controlling the dispensing of crop nutrient solution, and the processor 13 can execute the plurality of instructions to implement: obtaining the growth data of the crop; determining the growth status of the crop according to the growth data of the crop based on a pre-established crop database, wherein the crop database includes the growth status of multiple crops in multiple growth stages and the growth status of each crop; The ratio of nutrient solution corresponding to the growth state of the crop; based on the growth state of the crop, the ratio of nutrient solution required by the crop is determined; the culture solution is adjusted according to the ratio of nutrient solution; after a preset time, the updated growth state of the crop is determined; if the culture solution does not meet the ratio of nutrient solution corresponding to the updated growth state, the culture solution is adjusted again until the culture solution meets the ratio of nutrient solution corresponding to the growth state of the crop.

Specifically, the specific implementation method of the processor 13 for the above instructions can refer to the description of the relevant steps in the corresponding embodiment of Figure 1, which will not be elaborated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the modules is only a logical function division, and there may be other division methods in actual implementation.

The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of this embodiment.

Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present application is defined by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present application. Any attached figure mark in the claims should not be regarded as limiting the claims involved.

In addition, it is obvious that the word "including" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices stated in the system claim can also be implemented by one unit or device through software or hardware. Secondary terms are used to indicate names, but not any specific order.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this application and are not limiting. Although this application is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of this application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of this application.

S10~S60: Steps

Claims (9)

A method for controlling the dispensing of crop nutrient solution, wherein the method comprises: obtaining crop growth data; using a water level monitor to monitor the water level in a crop water tank; the water level monitor sends a sensed water level signal to a regulating device, the regulating device compares the received water level signal with a set signal to obtain a deviation, and a negative deviation indicates that the water level has dropped and is lower than a preset water level threshold value, the regulating device issues an opening instruction to a water supply electric valve according to the deviation, and simultaneously sends an image collection signal to an image collection device, the image collection device collects images of the crop, and transmits the images to the regulating device; based on a pre-established crop database, the growth of the crop is determined according to the growth data of the crop. The crop database includes the growth status of multiple crops in multiple growth stages, the nutrient solution ratio corresponding to each growth status, and the health status of the crops. The health status of the crops includes the color and size of the leaves, the density of the branches and leaves, and the thickness index of the stems corresponding to each growth period; based on the growth status of the crops, the nutrient solution ratio required by the crops is determined; the culture solution is adjusted according to the nutrient solution ratio; after a preset time, the updated growth status of the crops and the health status of the crops are determined; if the culture solution does not meet the nutrient solution ratio corresponding to the updated growth status and the health status, the culture solution is adjusted again until the culture solution meets the nutrient solution ratio corresponding to the growth status and the health status of the crops. The crop nutrient solution preparation control method as described in claim 1, wherein the determining the growth status of the crop comprises: monitoring the water level change in the water tank where the crop is planted; when the water level drops to a set threshold, obtaining the growth image of the crop through an image sensing device, identifying the growth image and obtaining the growth data of the crop; comparing the growth data of the crop with the crop data in the crop database to determine the growth status of the crop. The crop nutrient solution preparation control method as described in claim 1, wherein the crop growth state is determined based on the crop growth data based on the pre-established crop database, the crop database includes the growth state of multiple crops in multiple growth stages and the nutrient solution ratio corresponding to each growth state includes: determining the growth cycle and health state of the crop based on the growth state of the crop; determining the optimized nutrient solution ratio based on the growth cycle and health state of the crop. The crop nutrient solution preparation control method as described in claim 2, wherein the adjusting the culture solution according to the nutrient solution ratio includes: adding water to the water tank; adding one or more culture solutions and preset chemicals to the water tank in a preset ratio; stirring the culture solution in the water tank; starting the water circulation and continuing the preset time. The crop nutrient solution preparation control method as described in claim 4, wherein if the culture solution does not meet the nutrient solution ratio corresponding to the updated growth state, the culture solution is adjusted again until the culture solution meets the nutrient solution ratio corresponding to the growth state of the crop, including: confirming whether the conductivity EC value and the acid-base pH value in the culture solution meet the requirements; if the pH value is too high, adding sulfuric acid to lower the pH value; if the pH value is too low, adding water to increase the pH value; if the EC value is too high, adding water to lower the EC value; if the EC value is too low, adding one or more preset culture solutions according to the preset ratio. The crop nutrient solution preparation control method as described in claim 2, wherein the method further includes: establishing the crop database according to the characteristics, growth cycle, and health status of each growing crop. A crop nutrient solution preparation control device, wherein the device includes: an acquisition module: used to acquire crop growth data, using a water level monitor to monitor the water level in the crop water tank; the water level monitor sends the sensed water level signal to the regulating device, the regulating device compares the received water level signal with the set signal to obtain a deviation, and a negative deviation indicates that the water level drops and is lower than a preset water level threshold. The regulating device issues an opening instruction to the water supply electric valve according to the deviation, and simultaneously sends an image acquisition signal to the image acquisition device, the image acquisition device acquires images of the crop and transmits the images to the regulating device; based on a pre-established crop database, the growth status of the crop is determined according to the growth data of the crop, and the crop database includes a plurality of The growth status of crops in multiple growth stages, the nutrient solution ratio corresponding to each growth status, and the health status of crops, wherein the health status of crops includes the color and size of leaves corresponding to each growth period, the density of branches and leaves, and the thickness index of stems; a determination module, used to determine the nutrient solution ratio required by the crop based on the growth status of the crop; an adjustment module, used to adjust the culture solution according to the nutrient solution ratio; an update module, used to determine the updated growth status of the crop and the health status of the crop after a preset time; a judgment module, used to adjust the culture solution again until the culture solution meets the growth status of the crop and the nutrient solution ratio corresponding to the health status if the culture solution does not meet the updated growth status and the nutrient solution ratio corresponding to the health status. A regulating device, wherein the regulating device includes a memory and at least one processor, wherein at least one instruction is stored in the memory, and when the at least one instruction is executed by the at least one processor, the crop nutrient solution preparation control method as described in any one of claim items 1 to 6 is implemented. A computer-readable storage medium, wherein the computer-readable storage medium stores at least one instruction, and when the at least one instruction is executed by a processor, the crop nutrient solution preparation control method as described in any one of claims 1 to 6 is implemented.

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