Variable-frequency ultrasonic generating device for American ginseng seedling culture

Abstract

The invention discloses a variable-frequency ultrasonic generating device for American ginseng seedling culture, and relates to the technical field of agricultural production, the variable-frequency ultrasonic generating device comprises a box body, the upper surface of the box body is open, a seedling culture tray is arranged on the inner wall of the bottom of the box body, and a display screen is arranged on the outer wall of one side of the box body; the box body is composed of an ultrasonic transduction module, a power module, a growth monitoring module and a control module. The ultrasonic transduction module is composed of a piezoelectric crystal unit and an electroacoustic transducer; when high-frequency alternating-current voltage is applied to the piezoelectric crystal, the piezoelectric crystal can generate mechanical vibration, and then the mechanical vibration is converted into ultrasonic waves through the electroacoustic transducer; when the ultrasonic waves act on the soil on the seedling raising tray, the ultrasonic waves can generate tiny influence on the soil structure, and binding power among soil particles can be broken. The method can stimulate cell division and growth of American ginseng seeds, so that the growth speed and development cycle of American ginseng seeds are accelerated, and the germination rate of American ginseng is remarkably increased.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural production, and in particular to a variable frequency ultrasonic generating device used for growing American ginseng seedlings. Background Art

[0002] As people's understanding of the medicinal value and health functions of American ginseng deepens, the market demand for American ginseng continues to grow. Improving the efficiency of seedling cultivation can quickly expand the scale of American ginseng cultivation, thereby meeting market demand, increasing production, and stabilizing market supply. However, American ginseng may encounter various challenges and threats during the seedling cultivation process, such as low germination rate in natural conditions, pests and diseases, etc.

[0003] Traditional seedling cultivation methods require a lot of manual operation and meticulous management, which often requires a lot of labor and time costs. The germination rate of seeds is deeply affected by multiple environmental factors such as soil conditions, temperature and humidity. Especially under natural conditions, these factors are often difficult to control accurately, which makes it difficult to achieve a high level of germination rate. Therefore, there is room for improvement. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and propose a variable frequency ultrasonic generator for American ginseng seedling cultivation. The advantage is that it can stimulate the cell division and growth of American ginseng seeds, thereby accelerating its growth rate and development cycle, and significantly improving the germination rate of American ginseng.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A variable frequency ultrasonic generator for growing American ginseng seedlings, comprising a box, the upper surface of which is designed to be open, a seedling tray is arranged on the bottom inner wall of the box, and a display screen is arranged on one side outer wall of the box;

[0007] The box body is composed of four parts: ultrasonic transducer module, power module, growth monitoring module and control module;

[0008] The ultrasonic transducer module is composed of a piezoelectric crystal unit and an electroacoustic transducer; when a high-frequency AC voltage is applied to the piezoelectric crystal, the piezoelectric crystal will generate mechanical vibrations, which are then converted into ultrasonic waves through the electroacoustic transducer; when ultrasonic waves act on the soil on the seedling tray, they will have a slight effect on the soil structure, helping to break the adhesion between soil particles and increase the air permeability and water permeability of the soil. For seeds, the frequency conversion stimulation of ultrasound can help carbon dioxide to be discharged more effectively through the seed coat, while promoting the absorption of external moisture by seeds. This can not only speed up the seed swelling process, but also improve the germination rate of seeds and the growth quality of seedlings.

[0009] The growth monitoring module is equipped with a variety of high-precision sensors, including soil moisture sensors and soil temperature sensors, which are used to collect moisture and temperature data in real time and monitor the state of the soil; the soil moisture sensor and the soil temperature sensor are connected to the controller, and after the growth monitoring module obtains the soil moisture and temperature data, the analog signal is converted into a digital signal through the ADC and transmitted to the control module;

[0010] The control module receives various sensor data from the growth monitoring module, including soil moisture and soil temperature, and compares them in real time with the normal value range preset by the system; if the monitoring value is higher or lower than the normal threshold, the control module will adjust the ultrasonic frequency and intensity generated by the ultrasonic transducer module in real time through high-frequency AC voltage to ensure that the seeds are always in the most ideal growth environment.

[0011] The present invention is further configured such that the power module supplies power to the entire device, which reduces the 220V AC power to a lower voltage suitable for processing through a built-in transformer, and then converts the reduced low-voltage AC power into high-frequency AC power through an inverter, providing a stable high-frequency AC voltage for the ultrasonic generator to ensure the power supply required for the normal operation of each component.

[0012] The present invention is further configured such that the soil moisture adjustment formula is: V 交流电压 =V0+k1(H set -H); where V0 is the base voltage, k1 is the adjustment coefficient, H set is the target humidity value.

[0013] The present invention is further configured such that the soil moisture for the growth of the American ginseng is 60%-70% of the maximum water holding capacity of the soil; for the artificial germination of American ginseng seeds, the soil moisture is recommended to be maintained at about 7%, so the preset normal value interval of the soil moisture is [H6, H8]. If the actually measured soil moisture H is lower than H6, the intensity of the ultrasonic wave is increased to promote water absorption; if H is higher than H8, the intensity of the ultrasonic wave is reduced to reduce water absorption.

[0014] The present invention is further configured that the soil moisture adjustment formula is: 交流电压 =f0+k2(T set -T); where f0 is the base frequency, k2 is the adjustment coefficient, T set is the target temperature value.

[0015] The present invention is further configured such that the germination rate of American ginseng is highest when the soil temperature is kept in the range of 6°C-12°C; the normal value range of the soil temperature is preset as [T6, 12], if the actual measured soil temperature T is lower than T6, the frequency of the ultrasonic wave is increased to promote heat transfer; if T is higher than T 12 , then reduce the frequency of ultrasound to reduce heat transfer.

[0016] The present invention is further configured such that the control module adjusts the amplitude and intensity of the ultrasonic wave by adjusting the amplitude and intensity of the high-frequency alternating voltage applied to the piezoelectric crystal.

[0017] The present invention is further configured such that the frequency adjustment formula is: 超声波 =f 交流 压 ;

[0018] Among them, f 超声波 is the frequency of the ultrasound, f 交流压 is the frequency of the AC voltage applied to the piezoelectric crystal.

[0019] The present invention is further configured such that the strength adjustment formula is: 超声波 = k·V 交流电压 ;

[0020] Among them, I 超声波 is the intensity of the ultrasonic wave, V 交流电压 is the amplitude of the AC voltage applied to the piezoelectric crystal, and k is the proportionality coefficient; the proportionality coefficient k may vary depending on different piezoelectric materials and temperature.

[0021] The present invention is further configured such that the control module is connected to other agricultural data monitoring platforms via an APP to achieve remote monitoring and automated management.

[0022] The beneficial effects of the present invention are:

[0023] 1. As a physical vibration mechanical wave, variable frequency ultrasound has controllable energy. By adjusting the frequency and intensity of ultrasound, the cell division and growth of American ginseng seeds can be stimulated, thereby accelerating their growth rate and development cycle, and significantly improving the germination rate of American ginseng; this physical stimulation can enhance the activity of plant cells and enzymes, accelerate cell division, and increase the germination rate from 80% to more than 90%.

[0024] 2. The ultrasonic treatment of the equipment may improve the tolerance of American ginseng seeds to various environmental stresses such as drought and high temperature by subtly adjusting the physiological and biochemical processes of the seeds, such as enhancing the stability of the cell membrane, optimizing the activity of the antioxidant enzyme system, and regulating the osmotic pressure, so that the seeds can still maintain a good germination state under adverse conditions.

[0025] 3. Use a variable frequency ultrasonic generator device, the ultrasonic energy it generates may positively affect the metabolic process in the plant, thereby promoting the accumulation of effective ingredients in American ginseng such as ginsenosides, and improving the medicinal quality and nutritional value of American ginseng.

[0026] 4. The variable frequency ultrasonic device can be integrated with an automated control system to achieve real-time monitoring and adjustment of the seedling environment, reducing manual intervention. In addition, combined with the Internet of Things technology, the seedling situation can be understood in real time through the remote monitoring system, and management measures can be adjusted in a timely manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of a variable frequency ultrasonic generator for growing American ginseng seedlings proposed by the present invention;

[0028] Figure 2 This is a schematic diagram of the system structure of a variable frequency ultrasonic generator for growing American ginseng seedlings proposed by the present invention.

[0029] In the figure: 1. display screen; 2. box body; 3. seedling tray. DETAILED DESCRIPTION

[0030] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] Reference Figure 1 A variable frequency ultrasonic generating device for growing American ginseng seedlings comprises a box body 2, the upper surface of the box body 2 is designed to be open, a seedling tray 3 is arranged on the bottom inner wall of the box body 2, and a display screen 1 is arranged on one side outer wall of the box body 2; American ginseng seeds will be planted in the seedling tray 3, and the ultrasonic waves emitted by the box body 2 will be transmitted to the seedling tray 3 through media such as air and water, and interact with the American ginseng seeds; at the same time, the relevant parameters in the seedling growing process will be displayed through the display screen 1 and synchronized to the big data platform for easy management.

[0033] Reference Figure 2 ,The box 2 is composed of four parts: ultrasonic transducer module, power module, growth monitoring module and control module;

[0034] The ultrasonic transducer module is composed of a piezoelectric crystal unit and an electroacoustic transducer; when a high-frequency AC voltage is applied to the piezoelectric crystal, the piezoelectric crystal will generate mechanical vibrations, which are then converted into ultrasonic waves through the electroacoustic transducer; when ultrasonic waves act on the soil on the seedling tray 3, they will have a slight effect on the soil structure, helping to break the bonding force between soil particles and increase the air permeability and water permeability of the soil. For seeds, the frequency conversion stimulation of ultrasonic waves can help carbon dioxide to be discharged more effectively through the seed coat, while promoting the absorption of external moisture by seeds. This can not only speed up the seed swelling process, but also improve the germination rate of seeds and the growth quality of seedlings.

[0035] The growth monitoring module is equipped with a variety of high-precision sensors, including soil moisture sensors and soil temperature sensors, which are used to collect humidity and temperature data in real time and monitor the state of the soil; the soil moisture sensor and soil temperature sensor are connected to the controller, and after the growth monitoring module obtains the soil humidity and temperature data, the analog signal is converted into a digital signal through the ADC and transmitted to the control module; the control module receives various sensor data from the growth monitoring module, including soil humidity and soil temperature, and compares them with the normal value range preset by the system in real time; if the monitoring value is higher or lower than the normal threshold, the control module will adjust the ultrasonic frequency and intensity generated by the ultrasonic transducer module in real time through high-frequency AC voltage to ensure that the seeds are always in the most ideal growth environment;

[0036] The power module supplies power to the entire device. It reduces the 220V AC power to a lower voltage suitable for processing through the built-in transformer, and then converts the reduced low-voltage AC power into high-frequency AC power through the inverter, providing a stable high-frequency AC voltage for the ultrasonic generator to ensure the power supply required for the normal operation of each component.

[0037] In this embodiment, the soil moisture adjustment formula is: V 交流电压 =V0+k1(H set -H); where V0 is the base voltage, k1 is the adjustment coefficient, H set is the target humidity value; the soil humidity for American ginseng growth is 60%-70% of the maximum water holding capacity of the soil; for the artificial germination of American ginseng seeds, the soil humidity is recommended to be maintained at around 7%, so the preset normal soil humidity range is [H6, H8]. If the actual measured soil humidity H is lower than H6, the intensity of the ultrasonic wave is increased to promote water absorption; if H is higher than H8, the intensity of the ultrasonic wave is reduced to reduce water absorption.

[0038] The soil moisture regulation formula is: 交流电压 =f0+k2(T set -T); where f0 is the base frequency, k2 is the adjustment coefficient, T setis the target temperature value; the germination rate of American ginseng is highest when the soil temperature is kept in the range of 6℃-12℃; the normal value range of soil temperature is preset as [T6,T 12 ], if the actual measured soil temperature T is lower than T6, the frequency of the ultrasonic wave is increased to promote heat transfer; if T is higher than T 12 , then reduce the frequency of ultrasound to reduce heat transfer.

[0039] Furthermore, the control module adjusts the amplitude and intensity of the ultrasonic wave by adjusting the amplitude and intensity of the high-frequency alternating voltage applied to the piezoelectric crystal;

[0040] The frequency adjustment formula is: fultrasonic wave = fac voltage;

[0041] Among them, f 超声波 is the frequency of the ultrasound, f 交流压 is the frequency of the AC voltage applied to the piezoelectric crystal.

[0042] The intensity adjustment formula is: 超声波 = k·V 交流电压 ;

[0043] Among them, I 超声波 is the intensity of the ultrasonic wave, V 交流电压 is the amplitude of the AC voltage applied to the piezoelectric crystal, and k is the proportionality coefficient; the proportionality coefficient k may vary depending on different piezoelectric materials and temperature.

[0044] It is worth mentioning that the control module is connected to other agricultural data monitoring platforms through the APP to achieve remote monitoring and automated management.

[0045] Through the above-mentioned hardware configuration, data acquisition and transmission, functions and principles of the control module, and specific adjustment algorithms, it can be ensured that the growth monitoring module and the control module work together to provide the most ideal growth environment for American ginseng seeds.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A variable frequency ultrasonic generator for growing American ginseng seedlings, characterized in that: It comprises a box body (2), the upper surface of the box body (2) is designed to be open, the bottom inner wall of the box body (2) is provided with a seedling tray (3), and one side outer wall of the box body (2) is provided with a display screen (1); The box (2) is composed of four parts: an ultrasonic transducer module, a power module, a growth monitoring module and a control module; The ultrasonic transducer module is composed of a piezoelectric crystal unit and an electroacoustic transducer; when a high-frequency alternating voltage is applied to the piezoelectric crystal, the piezoelectric crystal will generate mechanical vibrations, which are then converted into ultrasonic waves through the electroacoustic transducer; when the ultrasonic waves act on the soil on the seedling tray (3), they will have a slight effect on the soil structure, helping to break the bonding force between soil particles; The growth monitoring module is equipped with a variety of high-precision sensors, including soil moisture sensors and soil temperature sensors, which are used to collect moisture and temperature data in real time and monitor the state of the soil; the soil moisture sensor and the soil temperature sensor are connected to the controller, and after the growth monitoring module obtains the soil moisture and temperature data, the analog signal is converted into a digital signal through the ADC and transmitted to the control module; The control module receives various sensor data from the growth monitoring module, including soil moisture and soil temperature, and compares them in real time with the normal value range preset by the system; if the monitoring value is higher or lower than the normal threshold, the control module will adjust the ultrasonic frequency and intensity generated by the ultrasonic transducer module in real time through high-frequency AC voltage to ensure that the seeds are always in the most ideal growth environment.

2. A variable frequency ultrasonic generator for growing American ginseng seedlings according to claim 1, characterized in that: The power module supplies power to the entire device. It reduces the 220V AC power to a lower voltage suitable for processing through a built-in transformer, and then converts the reduced low-voltage AC power into high-frequency AC power through an inverter, providing a stable high-frequency AC voltage for the ultrasonic generator.

3. A variable frequency ultrasonic generator for growing American ginseng seedlings according to claim 1, characterized in that: The soil moisture adjustment formula is: V 交流电压 =V0+k1(H set -H); Among them, V0 is the basic voltage, k1 is the adjustment coefficient, H set is the target humidity value.

4. A variable frequency ultrasonic generator for growing American ginseng seedlings according to claim 3, characterized in that: The soil moisture for the growth of American ginseng is 60%-70% of the maximum water holding capacity of the soil; for the artificial germination of American ginseng seeds, the soil moisture is recommended to be maintained at around 7%, so the preset normal soil moisture range is [H6, H8]. If the actual measured soil moisture H is lower than H6, the intensity of the ultrasound is increased to promote water absorption; if H is higher than H8, the intensity of the ultrasound is reduced to reduce water absorption.

5. The variable frequency ultrasonic generator for growing American ginseng seedlings according to claim 1, characterized in that: The soil moisture adjustment formula is: 交流电压 =f0+k2(T set -T); where f0 is the base frequency, k2 is the adjustment coefficient, T set is the target temperature value.

6. A variable frequency ultrasonic generator for growing American ginseng seedlings according to claim 5, characterized in that: The germination rate of American ginseng is highest when the soil temperature is kept in the range of 6°C-12°C; the normal value range of soil temperature is preset as [T6, T 12 ], if the actual measured soil temperature T is lower than T6, the frequency of the ultrasonic wave is increased to promote heat transfer; if T is higher than T 12 , then reduce the frequency of ultrasound to reduce heat transfer.

7. The variable frequency ultrasonic generator for growing American ginseng seedlings according to claim 1, characterized in that: The control module adjusts the amplitude and intensity of the ultrasonic wave by adjusting the amplitude and intensity of the high-frequency alternating voltage applied to the piezoelectric crystal.

8. The variable frequency ultrasonic generator for growing American ginseng seedlings according to claim 7, characterized in that: The frequency adjustment formula is: 超声波 =fAC voltage; Among them, f 超声波 is the frequency of the ultrasound, f 交流压 is the frequency of the AC voltage applied to the piezoelectric crystal.

9. A variable frequency ultrasonic generator for growing American ginseng seedlings according to claim 8, characterized in that: The intensity adjustment formula is: 超声波 = k·V 交流电压 ; Among them, I 超声波 is the intensity of the ultrasonic wave, V 交流电压 is the amplitude of the AC voltage applied to the piezoelectric crystal, and k is the proportionality coefficient; the proportionality coefficient k may vary depending on different piezoelectric materials and temperature.

10. A variable frequency ultrasonic generator for growing American ginseng seedlings according to any one of claims 1 to 9, characterized in that: The control module is connected to other agricultural data monitoring platforms through the APP to achieve remote monitoring and automated management.

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