Aralia root development optimization aeroponic culture control system and method thereof

Abstract

The invention discloses an Aralia chinensis root system development optimization aeroponic cultivation control system and method, and particularly relates to the technical field of Aralia chinensis root system cultivation, the Aralia chinensis root system development optimization aeroponic cultivation control system comprises an aeroponic cultivation box, a high pressure output module, an atomization device, an oxygen supply module, a nutrient solution supply module, a multi-dimensional monitoring module and a control module; aralia root systems are placed in the grooves. And the high-voltage output module is used for providing stable high-voltage power. The nutrient solution is pushed by the high-pressure output module to form a dynamic flowing fog environment, and is matched with easily-adsorbed fog drops refined by the ultrasonic atomizer, so that the nutrient solution is more fully contacted with the root system under the cooperation of the oxygen supply module and the nutrient solution supply module, and the nutrient solution is aeroponically cultured in the whole process, is good in dissolved oxygen content, flows without corrosion, and can effectively promote the growth of the root system; in the growth accelerating link, seedling raising in spring only needs more than 20 days to complete root promoting and germination, compared with a traditional mode, the seedling raising period is remarkably shortened, and meanwhile the rooting rate and the germination rate are greatly increased.

Description

Technical Field

[0001] This invention relates to the field of Aralia elata root cultivation technology, specifically to an optimized aeroponic control system and method for Aralia elata root development. Background Technology

[0002] Aralia elata is a deciduous shrub or tree belonging to the Aralia genus of the Araliaceae family. It is also known as spiny crow, spiny dragon tooth, dragon tooth aralia, etc. In order to improve the survival quality of Aralia elata, it is often necessary to cultivate it. The cultivation of Aralia elata root system is a targeted root care technology for Aralia elata. The core is to create a strong and developed fibrous root system to ensure the survival and high yield of the plant.

[0003] Currently, aeroponics is commonly used for cultivating Aralia elata roots. However, traditional aeroponic systems are often designed with static or low-flow-rate fog environments, resulting in poor nutrient solution droplet flow and insufficient precision in dissolved oxygen control, which makes the roots prone to rotting. Furthermore, since the operating parameters of aeroponic systems are mostly fixed, and the needs of Aralia elata roots vary at different growth stages, it is difficult to meet the actual requirements, leading to poor adaptability and slow cultivation of Aralia elata roots with unsatisfactory results. Therefore, this application proposes an optimized aeroponic control system and method for Aralia elata root development. Summary of the Invention

[0004] The purpose of this invention is to provide a control system and method for optimizing the root development of Aralia elata in aeroponics, in order to overcome the above-mentioned shortcomings in the technology.

[0005] In a first aspect, the present invention provides an optimized aeroponic control system for Aralia elata root development, comprising an aeroponic chamber, a high-pressure output module, an atomizing device, an oxygen supply module, a nutrient solution supply module, a multi-dimensional monitoring module, and a control module: The aeroponic box is equipped with a fixing component inside for placing Aralia elata roots; The high-voltage output module is used to provide stable high-voltage power and provide high-voltage fluid to the atomizing device. The atomizing device includes an ultrasonic atomizer and a waterproof transformer. The nozzle of the ultrasonic atomizer is provided with an adjustable nozzle, and the size of the atomized particles can be controlled by adjusting the diameter of the nozzle. The oxygen supply module is used to increase the dissolved oxygen content in the atomization environment inside the aeroponic box and maintain the dissolved oxygen content within a set range. The nutrient solution supply module is used to store and provide nutrient solution. The multidimensional monitoring module is used to collect the development and growth status of Aralia elata roots and growth environment parameters, and to feed back the collected development and growth status and growth environment parameter data to the control module. The control module is used to receive data signals and adjust the operating parameters of the high-pressure output module, atomizing device, oxygen supply module, nutrient solution supply module and monitoring module.

[0006] Preferably, the fixing component includes a lifting bracket, which is embedded in the aeroponic box and has multiple conical planting holes arranged in an array on the lifting bracket.

[0007] Preferably, the ultrasonic atomizer includes four-head, six-head, and ten-head atomizers, wherein the four-head atomizer is adapted to a nebulizer with a capacity of 50-80L, the six-head atomizer is adapted to a nebulizer with a capacity of 80-120L, and the ten-head atomizer is adapted to a nebulizer with a capacity of 120-150L. The nozzle diameter of the ultrasonic atomizer is adjustable from 0.1 to 0.5mm.

[0008] Preferably, the oxygen supply module includes a miniature aeration pump and a gas flow meter. The miniature aeration pump is used to aerate the aeroponic box, and the gas flow meter is used to precisely adjust the aeration flow rate.

[0009] Preferably, the nutrient solution supply module includes a storage tank and two pumps. The two pumps are respectively connected to a clean water tank and a nutrient solution concentrate tank. The control module controls the pumps to add clean water or nutrient solution concentrate to the storage tank and adjust the concentration range of the nutrient solution.

[0010] Preferably, the high-pressure output module is a high-pressure delivery pump, which is connected to both the storage tank and the ultrasonic atomizer, and is used to deliver the nutrient solution in the storage tank to the ultrasonic atomizer under high pressure.

[0011] Preferably, the multidimensional monitoring module includes a distance sensor, an image recognition sensor, a dissolved oxygen sensor, and a conductivity sensor, wherein the distance sensor is used to detect the growth length of the Aralia elata root tip, the image recognition sensor is used to capture images of the Aralia elata root morphology and bud development, the dissolved oxygen sensor is used to detect the dissolved oxygen content in the atomization environment within the aeroponic box, and the conductivity sensor is used to detect the concentration of the nutrient solution in the storage tank.

[0012] Preferably, the aeroponic control system further includes a temperature control module; The temperature control module includes a temperature sensor, a heater, a thermoelectric cooler, and a cooling fan. The temperature sensor is used to detect the temperature inside the aeroponics chamber, the heater is used to heat the chamber, and the thermoelectric cooler and cooling fan are used to cool the chamber.

[0013] Secondly, the present invention also provides a method for optimizing the aeroponic control of Aralia elata root development, applied to an aeroponic control system for optimizing the root development of Aralia elata as described in the first aspect, the aeroponic control method comprising the following steps: S1. Select healthy, disease-free Aralia elata roots, disinfect them, and then insert the roots into the conical planting holes on the lifting support inside the aeroponic box. S2. Select and install a suitable type of atomizing device according to the capacity of the aeroponic box. The control module loads the preset parameters for the rooting period of Aralia elata, including high pressure output pressure, ultrasonic atomization frequency, dissolved oxygen, nutrient solution concentration and temperature, and starts operation. S3. Data is collected through the multi-dimensional monitoring module and fed back to the control module. Specifically: the distance sensor uses non-contact laser to irradiate the ends of the Aralia elata root system and detects the root length three times a day (morning, noon, and evening) to calculate the average daily growth rate; the image recognition sensor uses a high-definition camera to capture images of the Aralia elata root system morphology and buds and detects them three times a day (morning, noon, and evening) to identify the number and length of buds; the dissolved oxygen sensor detects the dissolved oxygen content in the atomization environment of the aeroponic box every 1-2 hours; and the conductivity sensor detects the concentration of nutrient solution in the storage tank every 8 hours. S4. When the ranging sensor detects that the terminal growth length of the Aralia elata root system is ≥1cm and the average daily growth rate is ≥0.2cm / day, or when the image recognition sensor detects that the number of buds in the Aralia elata root system is ≥2, the control module switches to the preset parameters for the germination period of the Aralia elata root system. S5. When the image recognition sensor detects that the overall morphology of the Aralia elata root system is shallow and horizontally extended, with the main root not very developed, while the lateral roots and fibrous roots are relatively developed, and the distance measuring sensor detects that the end growth length of the Aralia elata root system is ≥5cm, the control module switches to the preset parameters for the seedling stage of the Aralia elata root system until the Aralia elata root system forms a complete root ball.

[0014] Preferably, the preset parameters of the Aralia elata root system also include the atomized particle size, and the method for optimizing the atomized particle size includes: When the average daily growth rate of Aralia elata roots during the rooting period is 0.2-0.5 cm / day, the nozzle diameter of the ultrasonic atomizer is adjusted to 0.1-0.2 mm, so that the particle size of the atomized particles is controlled at 5-15 μm. When the average daily growth rate of Aralia elata roots during the germination period is 0.5-1 cm / day, the nozzle diameter of the ultrasonic atomizer is adjusted to 0.3-0.4 mm, so that the particle size of the atomized particles is controlled at 15-35 μm. When the average daily growth rate of Aralia elata roots during the seedling stage is 1-1.5 cm / day, the nozzle diameter of the ultrasonic atomizer is adjusted to 0.4-0.5 mm, so that the particle size of the atomized particles is controlled at 35-50 μm.

[0015] The technical effects and advantages provided by the present invention in the above technical solution are as follows: The high-voltage output module drives the nutrient solution to form a dynamic flowing mist environment. Combined with the finely refined, easily adsorbed droplets from the ultrasonic atomizer, and with the coordinated efforts of the oxygen supply module and the nutrient solution supply module, the nutrient solution has more sufficient contact with the roots. The entire process of aeroponics is characterized by good dissolved oxygen levels, fluidity, and no stagnation, which can effectively promote root growth and accelerate the growth process. In spring, seedlings can complete root promotion and germination in just over twenty days, which significantly shortens the seedling cycle compared to traditional methods. At the same time, the rooting rate and germination rate are greatly improved. The multi-dimensional monitoring module captures the root development and growth status and growth environment parameters of Aralia elata, and links various execution modules to carry out phased dynamic control, so as to realize the flexible adjustment of preset parameters during the rooting period, sprouting period and seedling stage of Aralia elata, thereby achieving precise adaptation throughout the entire growth stage and meeting the dynamic growth needs of the root system. By adjusting the nozzle diameter, the size of the atomized particles can be controlled, allowing fine droplets to act on the roots during the rooting stage and larger droplets to act on the roots during the germination and seedling stages. By optimizing the particle size, it is ensured that the particle size is always adapted to the root growth state, thereby enabling on-demand supply and further improving the adaptability and cultivation effect of the aeroponic control system. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a system structure block diagram of the Aralia elata root development optimization aeroponic control system and method of the present invention; Figure 2 This is a flowchart illustrating the steps of the aralia elata root development optimization aeroponic control system and method of the present invention. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figure 1As shown, the present invention provides an optimized aeroponic control system for Aralia elata root development, including an aeroponic box, a high-pressure output module, an atomizing device, an oxygen supply module, a nutrient solution supply module, a multi-dimensional monitoring module, and a control module. The control module is used to receive data signals and adjust the operating parameters of the high-pressure output module, the atomizing device, the oxygen supply module, the nutrient solution supply module, and the monitoring module. The control module uses a PLC or embedded chip as the core control unit, and has the functions of data reception, processing, instruction output and module linkage control. Its core working logic is as follows: it receives various data transmitted by the multi-dimensional monitoring module, analyzes the data through the built-in growth stage determination algorithm and parameter optimization algorithm, determines the current growth stage of the Aralia elata root system (rooting stage, sprouting stage, seedling stage), and then adjusts the preset parameters of each module at the corresponding growth stage. It can also monitor whether the growth environment parameters change, and if there is a deviation, it can output precise adjustment instructions to each execution module.

[0020] The aeroponic box has a fixing component inside for placing Aralia elata roots. Specifically, the fixing component includes a lifting bracket, which is embedded in the aeroponic box and has multiple conical planting holes arranged in an array on the lifting bracket. By setting conical planting holes with the larger end facing upwards and the smaller end facing downwards, the roots of the Aralia elata can be inserted vertically, and the upper part of the Aralia elata is blocked to prevent it from falling, which facilitates cultivation. In this embodiment, the lifting bracket can preferably be made of high-strength aluminum alloy or 304 stainless steel, which has good load-bearing capacity and corrosion resistance, and can withstand the weight of multiple Aralia elata plants without deformation. The lifting function can be implemented by means of threaded adjustment, electric push rod (waterproof) adjustment, etc., which can adjust the initial layout height of the Aralia elata root system according to the height of the aeroponic box and the position of the atomizing nozzle to better meet the usage requirements and greatly improve the flexibility and applicability of the device.

[0021] The atomizing device includes an ultrasonic atomizer and a waterproof transformer. The waterproof transformer provides a matching operating voltage to the ultrasonic atomizer, ensuring its safe and stable operation in a humid aeroponic environment. The ultrasonic atomizer's nozzle is equipped with an adjustable nozzle, allowing control of the atomized particle size by adjusting the nozzle diameter. This can be achieved by changing the nozzle diameter through mechanical or electronic adjustment, thereby altering the jet velocity and flow rate of the high-pressure fluid. Combined with the ultrasonic vibration frequency, this enables graded control of the atomized particle size, transforming the nutrient solution into fine, uniform droplets. This increases the contact area between the nutrient solution and the roots, improving nutrient absorption efficiency. Simultaneously, the high-pressure jet creates a flowing mist environment, optimizing dissolved oxygen conditions for root growth. In one specific embodiment of the present invention, the nozzle diameter of the ultrasonic atomizer is adjustable within a range of 0.1-0.5 mm. This range is determined based on the absorption characteristics of the root system and the droplet diffusion law at different growth stages of Aralia elata. The nozzle diameter is one of the core parameters for controlling the particle size of the atomized particles. Under the same high pressure and ultrasonic frequency, the smaller the nozzle diameter, the faster the jet velocity of the high-pressure fluid, and the finer the atomized particles. Conversely, the larger the nozzle diameter, the slower the jet velocity, and the relatively coarser the atomized particles. The adjustable range of 0.1-0.5 mm can achieve full coverage of 5-50 μm atomized particles, which can meet the absorption needs of tender roots during the rooting period for fine droplets, avoiding damage to young roots by coarse particles, and also meet the needs of roots during the germination and seedling stages for larger droplets. To meet the demand for nutrient supply and improve nutrient delivery efficiency, a structural foundation was laid for subsequent phased optimization of atomized particles. Specifically, when the average daily growth rate of Aralia elata roots during the rooting period was 0.2-0.5 cm / day, the nozzle diameter of the ultrasonic atomizer was adjusted to 0.1-0.2 mm to control the atomized particle size at 5-15 μm; when the average daily growth rate of Aralia elata roots during the germination period was 0.5-1 cm / day, the nozzle diameter of the ultrasonic atomizer was adjusted to 0.3-0.4 mm to control the atomized particle size at 15-35 μm; and when the average daily growth rate of Aralia elata roots during the seedling stage was 1-1.5 cm / day, the nozzle diameter of the ultrasonic atomizer was adjusted to 0.4-0.5 mm to control the atomized particle size at 35-50 μm.

[0022] In this embodiment, the ultrasonic nebulizer models include four-head nebulizers, six-head nebulizers, and ten-head nebulizers. The compatibility between different models of nebulizers and the volume of the atomization chamber has been verified through a large number of tests. By matching the atomization volume with the volume, the uniform and stable droplet concentration is ensured. Specifically, the four-head atomizer is suitable for 50-80L aeroponic boxes. This volume is suitable for small aeroponic scenarios, such as laboratory seedling cultivation and small-scale seedling cultivation. The water flow rate and coverage of the four-head atomizer can be precisely matched to the space inside the box to ensure that the droplet concentration is stable within a suitable range, avoiding water accumulation inside the box due to excessive atomization or local dryness due to insufficient atomization. The six-head atomizer is suitable for aeroponics boxes of 80-120L. This volume is suitable for medium-sized aeroponics scenarios, such as small-scale production in greenhouses and experimental cultivation in seedling bases. The atomization volume of the six-head atomizer can meet the nutritional needs of the roots of multiple Aralia elata plants. At the same time, its coverage can evenly cover the space inside the box and is compatible with the layout of multiple sets of conical planting holes on the lifting bracket. The 10-head atomizer is compatible with 120-150L aeroponic boxes. This volume is suitable for large-scale aeroponic scenarios, such as large-scale seedling production. The large water flow and wide coverage of the 10-head atomizer can ensure that multiple areas and root systems of multiple seedlings in the box receive uniform droplet supply simultaneously, avoiding uneven droplet distribution due to excessive volume, and ensuring the consistency and stability of large-scale seedling production.

[0023] The oxygen supply module is used to increase the dissolved oxygen content in the atomized environment of the aeroponic box and maintain the dissolved oxygen content within a set range, preferably 8-12 mg / L, to ensure the normal respiration and metabolism of the roots and avoid root rot and growth stagnation due to lack of oxygen. Specifically, the oxygen supply module includes a micro aeration pump and a gas flow meter. The micro aeration pump is used to aerate the aeroponic box, and the gas flow meter is used to precisely adjust the aeration flow rate. When the dissolved oxygen content is lower than the set threshold, the dissolved oxygen content can be increased. When the dissolved oxygen content is higher than the set threshold, the oxygen supply intensity can be reduced or the oxygen supply can be stopped, thereby achieving a dynamic balance of dissolved oxygen content. In this embodiment, the micro aeration pump is preferably an oil-free, silent micro aeration pump, which has the advantages of small size, low power consumption, stable operation, and no oil pollution. It can be installed in the closed and confined space of the aeroponic box. Its core function is to pressurize the outside air or oxygen and deliver it to the atomization environment inside the aeroponic box through the aeration pipeline to increase the dissolved oxygen content. The power of the micro aeration pump is usually matched with the volume of the aeroponic box. For example, a 50-80L aeroponic box is suitable for a 5-10W aeration pump, and a 120-150L aeroponic box is suitable for a 15-20W aeration pump to ensure that sufficient aeration flow can be provided to meet the dissolved oxygen demand. In addition, a gas flow meter is installed in series between the micro aeration pump and the aeration pipeline. A glass rotor flow meter or electronic flow meter is preferred, with an adjustment accuracy of up to 0.1L / min. Its core function is to monitor the aeration flow in real time and feed the flow data back to the control module, and at the same time, adjust the aeration flow precisely according to the instructions of the control module.

[0024] The nutrient solution supply module is used to store and supply nutrient solution. Specifically, the nutrient solution supply module includes a storage tank and two pumps. The two pumps are respectively connected to a clean water tank and a nutrient solution concentrate tank. The control module controls the pumps to add clean water or nutrient solution concentrate to the storage tank and adjust the concentration range of the nutrient solution.

[0025] In this embodiment, the storage tank is made of food-grade PP or PE material, which has good corrosion resistance and sealing properties, and can prevent nutrient solution contamination or composition changes. In addition, a liquid level sensor can be used to monitor the liquid level in the storage tank, and a stirring device can be used to mix the solution evenly after replenishment. By setting up two independent pumps, the water and nutrient solution concentrate can be delivered separately and accurately proportioned. The pumps are micro metering pumps, which are characterized by accurate flow, stable operation and corrosion resistance, thus meeting the needs of different concentration adjustment ranges.

[0026] The high-pressure output module provides stable high-pressure power and high-pressure fluid for the atomizing device. Specifically, the high-pressure output module is a high-pressure delivery pump. The high-pressure delivery pump is equipped with a pressure regulating valve and can be paired with a 300W waterproof transformer. The high-pressure delivery pump is connected to both the liquid storage tank and the ultrasonic atomizer. It is used to deliver the nutrient solution in the liquid storage tank to the ultrasonic atomizer under high pressure. The high-pressure delivery pump can pressurize the nutrient solution in the liquid storage tank to a set pressure, preferably 0.3-0.8MPa, and continuously deliver it to the ultrasonic atomizer, providing a stable high-pressure fluid for the synergistic atomization process of high-pressure jetting and ultrasonic atomization.

[0027] The multi-dimensional monitoring module is used to collect data on the development and growth status of Aralia elata roots and environmental parameters, and feeds the collected data back to the control module. Specifically, the multi-dimensional monitoring module includes a distance sensor, an image recognition sensor, a dissolved oxygen sensor, and a conductivity sensor. The distance sensor is used to detect the length of the Aralia elata root tip, the image recognition sensor is used to capture images of the root morphology and bud development, the dissolved oxygen sensor is used to detect the dissolved oxygen content in the atomization environment of the aeroponic chamber, and the conductivity sensor is used to detect the concentration of nutrient solution in the storage tank. Based on this, the multi-dimensional monitoring module can comprehensively and in real time collect two types of key data: first, data on the development and growth status of Aralia elata roots, such as root length, number and length of buds, and root morphology; and second, key parameters of the aeroponic environment, such as dissolved oxygen, nutrient solution concentration, and ambient temperature. The collected data is converted into signals and fed back to the control module in real time, providing data basis for the control module to determine the growth stage and adjust operating parameters. In one specific embodiment of the present invention, the ranging sensor adopts a non-contact laser ranging sensor, which has the advantages of high detection accuracy, fast response speed and no interference from fog droplet environment. It mainly detects the growth length of the root end of Aralia elata, and by comparing the detection data at different time points, the growth increment of the root system can be obtained, and then the average daily growth rate can be calculated, thereby providing key data for the determination of growth stage. The image recognition sensor consists of a high-definition camera and an image acquisition card. It can clearly capture root images in the high humidity environment of the aeroponic box. The installation position is similar to that of the ranging sensor. The lens is aimed at the root growth area and bud development area to ensure complete capture of root morphology and bud details. It mainly captures images of Aralia elata root morphology and bud development, and analyzes the root growth status and bud development through image recognition algorithms. The dissolved oxygen sensor uses a fluorescence method, which has the advantages of high detection accuracy, fast response speed, no need for frequent calibration, and no interference from impurities in the water. It is installed inside the atomization box, usually in the middle area of ​​the atomization coverage, to ensure accurate detection of the average dissolved oxygen in the mist environment. Avoid installing it near the aeration outlet, which would result in a higher detection value, or in a corner, which would result in a lower detection value. The conductivity sensor is installed inside the storage tank and is usually immersed in the nutrient solution to ensure that the sensor probe is in full contact with the nutrient solution. By detecting the conductivity value of the nutrient solution, the concentration of the nutrient solution is indirectly reflected. The higher the conductivity value, the higher the concentration of the nutrient solution. When it is necessary to switch the operating parameters or when the parameter value deviates from the set range, the control module drives the liquid pump to add clean water or concentrate to ensure the stability of the nutrient solution concentration.

[0028] In one specific embodiment of the present invention, the aeroponic control system further includes a temperature control module. Specifically, the temperature control module includes a temperature sensor, a heater, a semiconductor cooling chip, and a cooling fan. The temperature sensor is used to detect the temperature inside the aeroponic box, the heater is used to heat up the temperature, and the semiconductor cooling chip and cooling fan are used to cool down the temperature. Since temperature is one of the environmental factors affecting the germination and growth of Aralia elata roots, the suitable temperature range is 18-25℃. If the temperature exceeds 25℃, it will lead to excessive root respiration, excessive nutrient consumption, and even root rot. If the temperature is below 18℃, it will inhibit the division and growth of root cells, resulting in a longer seedling cycle. The temperature difference between different seasons or day and night is large. Therefore, by heating or cooling, the temperature is precisely controlled within a suitable range to provide a stable temperature environment for root growth, thereby ensuring seedling efficiency and survival rate. In this embodiment, a PT100 temperature sensor is used, which is installed in the middle area inside the aeroponic chamber, away from temperature regulation components such as the heater and thermoelectric cooler, to ensure that the average temperature inside the chamber can be detected. A PTC heater is used, which can be installed at the bottom or side of the aeroponic chamber. The thermoelectric cooler and the cooling fan work together and are installed on the side wall of the aeroponic chamber to stably control the temperature and ensure the coordinated stability of the temperature and the atomization environment.

[0029] like Figure 2 As shown, this invention also proposes a method for optimizing the aeroponic control of Aralia elata root development, which is applied to an aeroponic control system for optimizing Aralia elata root development. The aeroponic control method includes the following steps: S1. Select healthy, disease-free Aralia elata roots, disinfect them, and then insert the roots into the conical planting holes on the lifting support inside the aeroponic box. In one specific embodiment of the present invention, healthy, disease-free, and undamaged Aralia elata roots can be selected, and disinfection can prevent the Aralia elata roots from rotting. Specifically, the Aralia elata roots can be soaked in a diluted carbendazim solution and then air-dried until there is no moisture on the surface to achieve pretreatment.

[0030] S2. Select and install the appropriate type of atomizing device according to the capacity of the aeroponic box. The control module loads the preset parameters for the rooting period of Aralia elata, including high pressure output pressure, ultrasonic atomization frequency, dissolved oxygen, nutrient solution concentration and temperature, and starts operation. In one specific embodiment of the present invention, the control module loads preset parameters for the rooting period of Aralia elata. These preset parameters are set based on the growth characteristics of Aralia elata during the rooting period. The specific parameters are: high pressure output pressure 0.3-0.5MPa, ultrasonic atomization frequency 1.7-1.9MHz, dissolved oxygen ≥10mg / L (high dissolved oxygen promotes root cell division), nutrient solution concentration 1.2-1.5g / L (low concentration of nutrients avoids root burn), and temperature 18-22℃ (suitable temperature promotes rooting). Each module operates collaboratively according to the preset parameters, thus formally entering the atomized seedling cultivation stage. During this process, the control module receives data signals from each module to monitor and adjust the operating parameters in a timely manner.

[0031] S3. Data is collected and fed back to the control module through the multi-dimensional monitoring module. Specifically: the distance sensor uses non-contact laser to irradiate the end of the Aralia elata root system and detects the root length three times a day, morning, noon and evening, to calculate the average daily growth rate; the image recognition sensor uses a high-definition camera to capture images of the Aralia elata root system morphology and bud points, and detects them three times a day, morning, noon and evening, to identify the number and length of bud points; the dissolved oxygen sensor detects the dissolved oxygen content in the atomization environment in the aeroponic box every 1-2 hours; and the conductivity sensor detects the concentration of nutrient solution in the storage tank every 8 hours. In one specific embodiment of the present invention, the average daily growth rate = (second detection length - first detection length) / interval time. By averaging multiple sets of data, the growth rate of the Aralia elata root system on that day can be roughly obtained. The root morphology and bud images are captured by a high-definition camera, and the number and length of buds are extracted using an image recognition algorithm. The extension state of the root system is also recorded. The data collected by each sensor is converted into signals and transmitted to the control module in real time. The control module processes the data and stores it in the built-in database to form a growth log for subsequent traceability and analysis. At the same time, the control module can compare the collected data with the preset parameters to determine whether it is necessary to adjust the operating parameters or switch the growth stage.

[0032] S4. When the ranging sensor detects that the terminal growth length of the Aralia elata root system is ≥1cm and the average daily growth rate is ≥0.2cm / day, or when the image recognition sensor detects that the number of buds in the Aralia elata root system is ≥2, the control module switches to the preset parameters for the germination period of the Aralia elata root system. In one specific embodiment of the present invention, when the terminal growth length of the Aralia elata root system is ≥1cm and the average daily growth rate is ≥0.2cm / day, it indicates that the Aralia elata root system has been initially formed, has the ability to absorb nutrients, and has entered a rapid growth stage. In addition, if the number of buds in the Aralia elata root system is ≥2, it also indicates that the root system has entered the germination preparation stage. Usually, this condition can be met in about 20 days when raising seedlings in spring. Based on the historical growth characteristics of Aralia elata roots, the preset parameters for its germination period are as follows: high pressure output pressure 0.5-0.7MPa to increase atomization volume and improve nutrient supply efficiency; ultrasonic atomization frequency 2.0-2.2MHz to refine droplets and adapt to bud absorption; dissolved oxygen 8-10mg / L to adapt to root respiration needs during germination; nutrient solution concentration 1.5-1.8g / L to increase nutrient supply and meet rapid growth needs; and temperature 22-25℃, suitable temperature for bud germination.

[0033] S5. When the image recognition sensor detects that the overall shape of the Aralia elata root system is shallow and horizontally extended, with the main root not very developed, while the lateral roots and fibrous roots are relatively developed, and the distance sensor detects that the end growth length of the Aralia elata root system is ≥5cm, the control module switches to the preset parameters for the seedling stage of the Aralia elata root system until the Aralia elata root system forms a complete root ball.

[0034] In one specific embodiment of the present invention, the overall morphology of the Aralia elata root system is a shallow root system with a horizontal extension pattern. The main root is not very developed, while the lateral roots and fibrous roots are relatively developed. This morphology is a typical characteristic of the root system of Aralia elata during the seedling stage, indicating that the root system has a stable absorption and support capacity. The terminal growth length of the Aralia elata root system is ≥5cm, which also indicates that the root system has completed the initial expansion and has the foundation for seedling formation. Meanwhile, the preset parameters for the seedling stage of Aralia elata root system are as follows: high pressure output pressure 0.6-0.8MPa, with maximum pressure to ensure sufficient atomization volume and droplet flow; ultrasonic atomization to be started as needed, and can only be operated when the ambient humidity is below 60% to avoid excessive atomization leading to root rot; dissolved oxygen 8-12mg / L; nutrient solution concentration 1.8-2.0g / L, with the highest concentration to meet the nutritional needs of seedling growth; and temperature 22-25℃. Aralia elata has a complete root ball with a diameter of ≥8cm. The root ball is the core indicator of seedling establishment, indicating that it has good water absorption and support, and has a high survival rate after transplanting.

[0035] Furthermore, the preset parameters for the Aralia elata root system also include the atomized particle size. The optimization method for the atomized particle size includes: when the average daily growth rate of the Aralia elata root system during the rooting period is 0.2-0.5 cm / day, adjusting the nozzle diameter of the ultrasonic atomizer to 0.1-0.2 mm, so that the atomized particle size is controlled at 5-15 μm. Its small particle size and large specific surface area can be evenly attached to the surface of the tender root system, avoiding root burn caused by local nutrient accumulation. Moreover, the droplets have strong fluidity and can penetrate into the small gaps of the root system, improving the comprehensiveness of nutrient absorption. At the same time, the evaporation rate of fine droplets is relatively slow, which can maintain a moist environment on the root surface and promote rooting. When the average daily growth rate of Aralia elata roots during the germination period is 0.5-1 cm / day, the nozzle diameter of the ultrasonic atomizer is adjusted to 0.3-0.4 mm, so that the particle size of the atomized particles is controlled at 15-35 μm. The particle size is moderate, which can carry enough nutrients to meet the needs of rapid growth, while avoiding the problem of poor adhesion caused by excessively large particle size. In addition, the flow speed and diffusion range of the droplets are moderate, which can simultaneously cover the roots and buds, providing nutrients to both at the same time, promoting bud germination and root expansion. When the average daily growth rate of Aralia elata roots during the seedling stage is 1-1.5 cm / day, adjust the nozzle diameter of the ultrasonic atomizer to 0.4-0.5 mm, so that the particle size of the atomized particles is controlled at 35-50 μm. The larger particle size carries more nutrients, which can meet the nutritional needs of the vigorous root growth during the seedling stage. In addition, the coarse droplets driven by high pressure flow quickly, which can form a stronger flowing mist environment, further increasing the dissolved oxygen in the chamber and ensuring root respiration and metabolism. At the same time, the relatively fast settling speed of the coarse droplets can reduce the condensation of droplets at the top of the chamber and avoid the growth of pathogens caused by water accumulation.

[0036] This indicates that during the rooting stage, the roots are tender new roots with fragile epidermis. Fine droplets can avoid damaging the epidermis and adhere more evenly to the root surface, improving absorption efficiency. During the germination and seedling stages, the roots grow vigorously and the epidermis gradually becomes tougher. Larger droplets can carry more nutrients, improving nutrient transport efficiency. Therefore, by optimizing the particle size of the atomized particles to ensure that the particle size always matches the root growth state, on-demand supply can be achieved, further improving the adaptability and cultivation effect of the aeroponic control system.

[0037] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A system for optimizing the root development of Aralia elata using aeroponics, characterized in that, Includes aerosol chamber, high-pressure output module, atomizing device, oxygen supply module, nutrient solution supply module, multi-dimensional monitoring module, and control module: The aeroponic box is equipped with a fixing component inside for placing Aralia elata roots; The high-voltage output module is used to provide stable high-voltage power and provide high-voltage fluid to the atomizing device. The atomizing device includes an ultrasonic atomizer and a waterproof transformer. The nozzle of the ultrasonic atomizer is provided with an adjustable nozzle, and the size of the atomized particles can be controlled by adjusting the diameter of the nozzle. The oxygen supply module is used to increase the dissolved oxygen content in the atomization environment inside the aeroponic box and maintain the dissolved oxygen content within a set range. The nutrient solution supply module is used to store and provide nutrient solution. The multidimensional monitoring module is used to collect the development and growth status of Aralia elata roots and growth environment parameters, and to feed back the collected development and growth status and growth environment parameter data to the control module. The control module is used to receive data signals and adjust the operating parameters of the high-pressure output module, atomizing device, oxygen supply module, nutrient solution supply module and monitoring module.

2. The aeroponic control system for optimizing Aralia elata root development according to claim 1, characterized in that: The fixing component includes a lifting bracket, which is embedded in the aeroponic box and has multiple conical planting holes arranged in an array on the lifting bracket.

3. The aeroponic control system for optimizing Aralia elata root development according to claim 1, characterized in that: The ultrasonic atomizers include four-head, six-head, and ten-head models. The four-head atomizers are suitable for aerosol chambers with a capacity of 50-80L, the six-head atomizers are suitable for aerosol chambers with a capacity of 80-120L, and the ten-head atomizers are suitable for aerosol chambers with a capacity of 120-150L. The nozzle diameter of the ultrasonic atomizer is adjustable from 0.1 to 0.5mm.

4. The aeroponic control system for optimizing Aralia elata root development according to claim 1, characterized in that: The oxygen supply module includes a miniature aeration pump and a gas flow meter. The miniature aeration pump is used to aerate the aeroponic box, and the gas flow meter is used to precisely adjust the aeration flow rate.

5. The aeroponic control system for optimizing Aralia elata root development according to claim 1, characterized in that: The nutrient solution supply module includes a storage tank and two pumps. The two pumps are respectively connected to a clean water tank and a nutrient solution concentrate tank. The control module controls the pumps to add clean water or nutrient solution concentrate to the storage tank to adjust the concentration of the nutrient solution.

6. The aeroponic control system for optimizing Aralia elata root development according to claim 5, characterized in that: The high-pressure output module is a high-pressure delivery pump, which is connected to the liquid storage tank and the ultrasonic atomizer respectively, and is used to deliver the nutrient solution in the liquid storage tank to the ultrasonic atomizer under high pressure.

7. The aeroponic control system for optimizing Aralia elata root development according to claim 5, characterized in that: The multidimensional monitoring module includes a distance sensor, an image recognition sensor, a dissolved oxygen sensor, and a conductivity sensor. The distance sensor is used to detect the growth length of the Aralia elata root tip, the image recognition sensor is used to capture images of the Aralia elata root morphology and bud development, the dissolved oxygen sensor is used to detect the dissolved oxygen content in the atomization environment within the aeroponic box, and the conductivity sensor is used to detect the concentration of the nutrient solution in the storage tank.

8. The aeroponic control system for optimizing Aralia elata root development according to claim 1, characterized in that, The aeroponic control system also includes a temperature control module; The temperature control module includes a temperature sensor, a heater, a thermoelectric cooler, and a cooling fan. The temperature sensor is used to detect the temperature inside the aeroponics chamber, the heater is used to heat the chamber, and the thermoelectric cooler and cooling fan are used to cool the chamber.

9. A method for optimizing and controlling Aralia elata root development via aeroponics, characterized in that, An aeroponic control system for optimizing Aralia elata root development, as described in any one of claims 1-8, comprises the following steps: S1. Select healthy, disease-free Aralia elata roots, disinfect them, and then insert the roots into the conical planting holes on the lifting support inside the aeroponic box. S2. Select and install a suitable type of atomizing device according to the capacity of the aeroponic box. The control module loads the preset parameters for the rooting period of Aralia elata, including high pressure output pressure, ultrasonic atomization frequency, dissolved oxygen, nutrient solution concentration and temperature, and starts operation. S3. Data is collected through the multi-dimensional monitoring module and fed back to the control module. Specifically: the distance sensor uses non-contact laser to irradiate the ends of the Aralia elata root system and detects the root length three times a day (morning, noon, and evening) to calculate the average daily growth rate; the image recognition sensor uses a high-definition camera to capture images of the Aralia elata root system morphology and buds and detects them three times a day (morning, noon, and evening) to identify the number and length of buds; the dissolved oxygen sensor detects the dissolved oxygen content in the atomization environment of the aeroponic box every 1-2 hours; and the conductivity sensor detects the concentration of nutrient solution in the storage tank every 8 hours. S4. When the ranging sensor detects that the terminal growth length of the Aralia elata root system is ≥1cm and the average daily growth rate is ≥0.2cm / day, or when the image recognition sensor detects that the number of buds in the Aralia elata root system is ≥2, the control module switches to the preset parameters for the germination period of the Aralia elata root system. S5. When the image recognition sensor detects that the overall morphology of the Aralia elata root system is shallow and horizontally extended, with the main root not very developed, while the lateral roots and fibrous roots are relatively developed, and the distance measuring sensor detects that the end growth length of the Aralia elata root system is ≥5cm, the control module switches to the preset parameters for the seedling stage of the Aralia elata root system until the Aralia elata root system forms a complete root ball.

10. A method for optimizing and controlling Aralia elata root development via aeroponics according to claim 9, characterized in that, The preset parameters for the Aralia elata root system also include the atomized particle size, and the optimization method for the atomized particle size includes: When the average daily growth rate of Aralia elata roots during the rooting period is 0.2-0.5 cm / day, the nozzle diameter of the ultrasonic atomizer is adjusted to 0.1-0.2 mm, so that the particle size of the atomized particles is controlled at 5-15 μm. When the average daily growth rate of Aralia elata roots during the germination period is 0.5-1 cm / day, the nozzle diameter of the ultrasonic atomizer is adjusted to 0.3-0.4 mm, so that the particle size of the atomized particles is controlled at 15-35 μm. When the average daily growth rate of Aralia elata roots during the seedling stage is 1-1.5 cm / day, the nozzle diameter of the ultrasonic atomizer is adjusted to 0.4-0.5 mm, so that the particle size of the atomized particles is controlled at 35-50 μm.

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