An automatic space spraying device and spraying method

Abstract

This invention relates to the field of insect control devices, and provides an automatic spatial spraying device and spraying method. The automatic spatial spraying device includes a body, a pulley assembly, and a spraying assembly. The pulley assembly can drive the body to move along a track. The spraying assembly includes a spray pipe, a liquid delivery pipe, and a gas delivery pipe. One end of the spray pipe is provided with a first end plate, and the first end plate is provided with a spray nozzle. The liquid delivery pipe is located inside the spray pipe, and the outer peripheral wall of the liquid delivery pipe is spaced apart from the inner peripheral wall of the spray pipe to define a gas channel. One end of the liquid delivery pipe is open to form a liquid outlet. The liquid outlet and the spray nozzle are spaced apart along the axial direction of the spray pipe so that the gas channel communicates with the spray nozzle. The gas delivery pipe is connected to the gas channel. The automatic spatial spraying device of this invention can automatically perform spraying operations, reducing the risk of field managers being exposed to pesticides, thereby improving the safety of pesticide application.

Description

Technical Field

[0001] This invention relates to the field of insect control devices, and more particularly to an automatic spatial spraying device and spraying method. Background Technology

[0002] In modern vegetable cultivation, disease control is a crucial step in ensuring healthy growth and stable yields. However, in existing technologies, manual application of pesticides is not only inefficient but also significantly increases the chances of field workers coming into direct contact with pesticides, greatly raising the risk of pesticide exposure. Because it requires manually operating sprayers or handheld spray guns, workers must frequently move between crops, which is not only time-consuming and labor-intensive but also makes it difficult to completely avoid direct skin or respiratory contact during application, thus endangering their health. Summary of the Invention

[0003] This invention provides an automatic spatial spraying device to solve the problem that managers are exposed to pesticides during pesticide application in the prior art, thereby achieving automatic pesticide application and protecting the health of managers.

[0004] This invention provides a spraying method.

[0005] An embodiment of the present invention discloses an automatic space spraying device, comprising:

[0006] Organism;

[0007] A pulley assembly, which can drive the machine body to move along a track;

[0008] A spray assembly includes a nozzle, a liquid delivery pipe, and a gas delivery pipe. One end of the nozzle is provided with a first end plate, and the first end plate is provided with a spray port. The liquid delivery pipe is disposed inside the nozzle, and the outer peripheral wall of the liquid delivery pipe is spaced apart from the inner peripheral wall of the nozzle to define a gas passage. One end of the liquid delivery pipe is open to form a liquid outlet. The liquid outlet and the spray port are spaced apart along the axial direction of the nozzle so that the gas passage communicates with the spray port. The gas delivery pipe communicates with the gas passage.

[0009] When the liquid pesticide in the infusion tube is sprayed out from the liquid outlet, it is impacted by the high-pressure gas in the gas channel, and the liquid pesticide diffuses at the spray nozzle to form atomized pesticide.

[0010] In some embodiments, the formula for calculating the spray flow rate Q of the spray assembly during spraying operations is as follows:

[0011] Q=DMv / 666.67

[0012] Where Q is in L / min;

[0013] D represents the spray distance;

[0014] M represents the water consumption per mu (unit of land area);

[0015] v represents the travel speed of the automatic space spray device.

[0016] In some embodiments, the automatic space spraying device includes a cable chain assembly that can move with the machine body. The cable chain assembly is provided with an air supply pipe and a liquid supply pipe. The air supply pipe is connected to the air delivery pipe, and the liquid supply pipe is connected to the liquid delivery pipe.

[0017] In some embodiments, the automatic space spray device includes a sensor assembly mounted on the body to collect ambient temperature and humidity.

[0018] In some embodiments, the pulley assembly includes a pulley, a transmission component, and a motor, the motor being disposed within the housing, and the motor driving the transmission component to rotate the pulley.

[0019] In some embodiments, the automatic space spray device includes a controller electrically connected to the motor, and a sensor assembly electrically connected to the controller.

[0020] An embodiment of the present invention discloses a spraying method, comprising:

[0021] S1. Construct a plant disease index table based on temperature and humidity;

[0022] S2. The automatic space spraying device performs patrol operations to obtain temperature and humidity distribution information in the greenhouse;

[0023] S3. Based on the temperature and humidity distribution information, find the corresponding disease index in the plant disease index table;

[0024] S4. Control the automatic space spray device to perform spraying operation or dormant operation according to the magnitude of the disease index.

[0025] In some embodiments, S4 includes:

[0026] S41. If the disease index is greater than the preset value, the automatic spatial spraying device is controlled to perform spraying operations; after the application is completed, the automatic application will not be performed again within the safe interval period for pesticide use, and the application effect will be checked manually.

[0027] S42. If the disease index is less than the preset value, the automatic space spray device is put into hibernation. After the automatic space spray device completes hibernation, S2 and S3 are executed again.

[0028] In some embodiments, S41 includes: if the disease index is greater than a preset value, then after waiting for a set time, controlling the automatic space spray device to perform spraying operations.

[0029] In some embodiments, S1 includes:

[0030] S11. Collect and isolate field pathogens and culture them at different temperatures and humidity levels for a first preset time to prepare spore suspensions;

[0031] S12. After inoculating the experimental plants that have been cultivated to the preset stage with spore suspension, culture them for a second preset time.

[0032] S13. Move the experimental plants to natural sunlight and cultivate them for a third preset time.

[0033] S14. Conduct a disease index survey on the experimental plants to construct the plant disease index table.

[0034] The automatic spatial spraying device of this invention can automatically perform spraying operations, reducing the risk of field managers being exposed to pesticides and thus improving the safety of pesticide application.

[0035] The spraying method of this invention utilizes a constructed plant disease index table combined with real-time collected temperature and humidity data to predict the risk of disease occurrence in advance and take timely control measures such as spraying or dormancy operations, effectively reducing the probability and severity of disease occurrence. At the same time, it achieves automated pesticide application, reducing the risk of pesticide poisoning for field managers. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the structure of the automatic space spray device provided by the present invention.

[0038] Figure 2 This is a schematic diagram of the spray assembly of the automatic space spray device provided by the present invention.

[0039] Figure 3 This is a schematic diagram of the spraying method provided by the present invention.

[0040] Figure 4 This is a schematic diagram of S1 of the spraying method provided by the present invention.

[0041] Figure label:

[0042] 1. Body; 2. Pulley assembly; 21. Pulley; 22. Transmission components;

[0043] 3. Spray assembly; 31. Nozzle; 311. First end plate; 3111. Nozzle; 32. Infusion pipe; 321. Liquid outlet; 33. Gas pipe;

[0044] 4. Cable chain assembly; 5. Sensor assembly; 6. Track. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0046] like Figure 1 and Figure 2 As shown, an embodiment of the present invention discloses an automatic space spraying device, including a body 1, a pulley assembly 2 and a spraying assembly 3.

[0047] The pulley assembly 2 can drive the machine body 1 to move along the track 6.

[0048] The spray assembly 3 includes a nozzle 31, a liquid delivery pipe 32, and a gas delivery pipe 33. One end of the nozzle 31 is provided with a first end plate 311, and the first end plate 311 is provided with a spray port 3111. The liquid delivery pipe 32 is disposed inside the nozzle 31, and the outer peripheral wall of the liquid delivery pipe 32 is spaced apart from the inner peripheral wall of the nozzle 31 to define a gas passage. One end of the liquid delivery pipe 32 is open to form a liquid outlet 321. The liquid outlet 321 and the spray port 3111 are spaced apart in the axial direction of the nozzle 31 so that the gas passage communicates with the spray port 3111. The gas delivery pipe 33 communicates with the gas passage.

[0049] For example, the track 6 is arranged inside the greenhouse, and the pulley assembly 2 includes multiple pulleys 21. The pulley assembly 2 is set on the body 1 so as to drive the body 1 to move along the track 6.

[0050] The nozzle 31 has a first end plate 311 at its front end, and a spray port 3111 is located in the middle of the first end plate 311. The front end of the liquid delivery pipe 32 is open to form a liquid outlet 321, which is located inside the nozzle 31. The liquid outlet 321 and the spray port 3111 are spaced apart along the axial direction of the nozzle 31. An annular gas passage is defined by a spaced-apart arrangement between the outer peripheral wall of the liquid delivery pipe 32 and the inner peripheral wall of the nozzle 31. The gas delivery pipe 33 communicates with the annular passage to deliver high-pressure gas into the annular passage.

[0051] When the liquid pesticide in the infusion tube 32 is sprayed out from the liquid outlet 321, it is impacted by the high-pressure gas in the gas channel. The liquid pesticide then diffuses at and near the spray nozzle 3111, forming an atomized pesticide. Thus, using a pressure-assisted two-phase flow nozzle, the pesticide is atomized at ultra-low volume, producing droplets with a diameter in the micrometer range. These droplets easily disperse within the canopy, resulting in a longer diffusion distance and improved insecticidal effect.

[0052] In related technologies, manual application of pesticides is not only inefficient, but also significantly increases the chances of field managers coming into direct contact with pesticides, greatly increasing the risk of pesticide exposure. Long-term exposure to pesticides poses a safety hazard of poisoning to field managers, threatening their health.

[0053] In the automatic spatial spraying device of this embodiment, the pulley assembly 2 can drive the automatic spatial spraying device to move smoothly along the preset track 6, ensuring the accurate navigation and positioning of the automatic spatial spraying device in the working area, and the spraying assembly 3 atomizes the liquid pesticide and disperses it.

[0054] The automatic spatial spraying device of this invention can automatically carry out spraying operations by controlling the operation of the spraying component 3 and the pulley component 2, thereby reducing the labor intensity and pesticide exposure risk of field managers, improving the effectiveness and efficiency of disease control, and ensuring the personal safety of field managers.

[0055] Therefore, the automatic spatial spraying device of this invention can automatically perform spraying operations, reducing the risk of field managers being exposed to pesticides and thus improving the safety of pesticide application.

[0056] In some embodiments, the formula for calculating the spray flow rate Q of the spray assembly 3 during spraying operations is as follows:

[0057] Q=DMv / 666.67

[0058] Where 666.67 is the area of ​​one mu (a Chinese unit of area, approximately 666.67 square meters);

[0059] The unit of Q is L / min;

[0060] D represents the spraying distance, which can be the width of the greenhouse, for example, 10m.

[0061] M represents the water consumption per mu (unit of land area);

[0062] v represents the speed of the automatic space spray device.

[0063] When the spraying component 3 performs spraying operations, the spray flow rate Q is related to the spraying distance D and the traveling speed v of the automatic spraying device. By controlling the spraying distance, water consumption per mu, and traveling speed, the spray flow rate Q of the spraying component 3 can be controlled, thereby facilitating the control of the amount of pesticide sprayed.

[0064] In some embodiments, the automatic space spraying device includes a cable chain assembly 4, which can move with the body 1. An air supply pipe (not shown in the figure) and a liquid supply pipe (not shown in the figure) are laid inside the cable chain assembly 4. The air supply pipe is connected to the air delivery pipe 33, and the liquid supply pipe is connected to the liquid delivery pipe 32.

[0065] For example, such as Figure 1 As shown, the cable chain assembly 4 can flexibly extend and retract as the body 1 moves, ensuring that the internally laid air supply pipes and liquid supply pipes are not affected by the external environment and maintain good working condition.

[0066] The air supply pipe in the drag chain assembly 4 is connected to the air delivery pipe 33 to ensure a stable airflow supply; while the liquid supply pipe is connected to the liquid delivery pipe 32 to ensure accurate delivery of the required liquid agent, thereby achieving efficient and precise operation and improving the reliability of the automatic space spraying device.

[0067] Understandably, the air supply pipe can be connected to the air pump, and the liquid supply pipe can be connected to the medicine box.

[0068] In some embodiments, the automatic space spray device includes a sensor assembly 5, which is disposed on the body 1 to collect ambient temperature and humidity.

[0069] For example, such as Figure 1 As shown, sensor assembly 5 is located on the top of the unit 1. Sensor assembly 5 is used to collect temperature and humidity data of the surrounding environment in real time, ensuring accurate monitoring and response to microclimate changes within the greenhouse, thereby optimizing disease control measures. Sensor assembly 5 includes a temperature sensor and a humidity sensor.

[0070] In some embodiments, the pulley assembly 2 includes a pulley 21, a transmission component 22, and a motor (not shown in the figure). The motor is located inside the body 1, and the motor drives the transmission component 22 to rotate the pulley 21.

[0071] For example, an electric motor is installed inside the machine body 1 as a power source, and its output shaft is connected to a transmission component 22, which can be a synchronous belt, chain, or gear. After the motor starts, it transmits power to the pulley 21 through the transmission component 22, enabling the pulley 21 to rotate along the track 6, thereby driving the entire machine body 1 to move along a predetermined path.

[0072] In some embodiments, the automatic space spray device includes a controller (not shown), which is electrically connected to a motor, and a sensor assembly 5 is electrically connected to the controller.

[0073] The controller is electrically connected to the motor to control its operating status. Simultaneously, sensor assembly 5 is also electrically connected to the controller, transmitting temperature and humidity data in real time. The controller analyzes and processes the environmental information collected by the sensors, automatically adjusting the motor's operating parameters to optimize the performance of the automatic spatial spray device, ensuring efficient and accurate task execution under various environmental conditions.

[0074] Optionally, the controller includes a computer.

[0075] like Figure 3 As shown, an embodiment of the present invention discloses an automatic space spraying device, comprising:

[0076] S1. Construct a plant disease index table based on temperature and humidity.

[0077] S2. The automatic space spraying device performs patrol operations to obtain information on the temperature and humidity distribution within the greenhouse. For example, when field managers discover diseased plants during their patrols, they send a command to the controller to begin monitoring for disease risk. The automatic space spraying device patrols the greenhouse every hour, continuously collecting temperature and humidity data and calculating average values ​​during the patrol.

[0078] S3. Based on the temperature and humidity distribution information, find the corresponding disease index in the plant disease index table. For example, use bilinear interpolation to find the corresponding disease index from the disease index table constructed in step S1.

[0079] S4. Control the automatic space spray device to perform spraying operations or hibernation operations according to the severity of the illness index.

[0080] The spraying method of this invention utilizes a constructed plant disease index table combined with real-time collected temperature and humidity data to predict the risk of disease occurrence in advance and take timely control measures such as spraying or dormancy operations, effectively reducing the probability and severity of disease occurrence. At the same time, it achieves automated pesticide application, reducing the risk of pesticide poisoning for field managers.

[0081] In some embodiments, S4 includes:

[0082] S41. If the disease index exceeds the preset value, the automatic spatial spraying device will be controlled to perform spraying operations. After the application is completed, automatic spraying will cease within the safe interval for pesticide use, awaiting manual inspection of the application effect.

[0083] S42. If the disease index is less than the preset value, the automatic space spray device will be put into hibernation. After the automatic space spray device has completed hibernation, S2 and S3 will be executed again.

[0084] For example, the preset value is 5.00. When the disease index calculated based on the result of step S3 is greater than 5.00, the disease index is high, and it can be considered that the current temperature and humidity are conducive to the production of pathogenic spores. The automatic space spray device is then controlled to perform spraying operations.

[0085] If the severity index calculated based on the result of step S3 is less than 5.00, the severity index is low, and the automatic space spray device is put into hibernation. The hibernation time can be set as needed, such as 12 hours, 24 hours, or 48 hours.

[0086] Each pesticide has a safe interval, which is how long after application can the pesticide be applied again. Once the pesticide application is completed, it will not be automatically applied again within the safe interval, thereby optimizing the application process.

[0087] Optionally, the preset value can be set according to the actual condition, for example, the preset value is 4.50-5.50, etc.

[0088] In some embodiments, S41 includes: if the disease index is greater than a preset value, then after waiting for a set time, controlling the automatic space spray device to perform spraying operations.

[0089] For example, if the set time is 4 to 6 hours, and the set time has been accumulated, it is assumed that enough pathogenic spores will be produced in the greenhouse. The controller then sends a command to the automatic space spraying device to perform the spraying operation, and the automatic space spraying device will then spray.

[0090] In some embodiments, S1 includes:

[0091] S11. Collect and isolate field pathogens and culture them at different temperatures and humidity levels for a first preset time to prepare spore suspensions. For example, to investigate the pathogenicity of fungal spores produced under different environmental factors, pathogens collected and isolated from the field are inoculated onto a culture medium and cultured at different temperature and humidity combinations for a first preset time to allow the pathogens to fully multiply and produce spores. After culture, the cultured pathogens are prepared into spore suspensions. The first preset time can be set as needed, such as 24 hours, 48 ​​hours, or 72 hours.

[0092] S12. After inoculating the experimental plants that have been cultivated to a preset stage with spore suspension, culture them for a second preset time; for example, when the experimental plants have grown two true leaves, inoculate the aforementioned spore suspension onto the leaves using a pipette, and then culture the inoculated experimental plants for a second preset time.

[0093] Optionally, the preset stage can be when the plant has 2 or 3 true leaves. The experimental plants are cucumbers, potatoes, or eggplants, etc. The first preset time can be set as needed, such as 24 hours, 48 ​​hours, or 72 hours.

[0094] S13. Move the experimental plants to natural sunlight for a third preset time. For example, after transferring the experimental plants to a greenhouse and cultivating them under natural sunlight, conduct a disease index survey five days later. The first preset time can be set as needed, such as 3 days, 5 days, or 7 days. By transferring the experimental plants to natural sunlight for cultivation, the actual field environment can be accurately simulated, ensuring that the experimental results have high reliability and representativeness.

[0095] S14. Conduct a disease index survey on the experimental plants to construct a plant disease index table.

[0096] The following is an embodiment of the spraying method of the present invention, using cucumber cultivation as an example.

[0097] To investigate the pathogenicity of fungal spores produced under different environmental conditions, *Cyclocarya cucumeroides* collected and isolated from the field was inoculated onto 85 mm diameter potato dextrose agar (PDA) medium and cultured in a temperature and humidity controlled incubator for 72 hours to allow *Cyclocarya cucumeroides* to fully multiply and produce spores. Experiments were conducted at 15℃, 20℃, 25℃, 30℃, 35℃, and relative humidity combinations of 60%, 80%, and 100% (a total of 15 temperature and humidity combinations, with each combination repeated 3 times).

[0098] After cultivation, 10 mL of sterile water containing 0.05% Tween 20 was added to the culture dish in a laminar flow hood. The surface of the culture medium was gently brushed with a sterile soft brush, and then filtered through four layers of sterile gauze to remove mycelial fragments. The spores were vortexed for 5 seconds to suspend them. A batch of cucumber plants was pre-cultivated. When the plants had grown to two true leaves, the aforementioned spore suspension was inoculated onto the leaves using a pipette, with 9 drops of 10 μL of spore suspension applied to each leaf. The inoculated cucumber plants were cultured at 25°C and 98% relative humidity for 48 hours, and then transferred to a greenhouse for cultivation under natural sunlight. Five days later, the disease index was investigated according to the "DB37 / T4105-2020 Field Efficacy Trial Guidelines for Fungicides for the Control of Cucumber Target Spot Disease".

[0099]

[0100] The results showed that temperature and humidity significantly affected the pathogenicity of *Cyclocarya paliurus* spores. Under certain temperature and humidity conditions, although *Cyclocarya paliurus* produced spores, they could not infect healthy plants.

[0101] When field managers discover diseased plants during their inspections, they send a command to the controller to begin monitoring disease risk. The automatic spatial spraying device moves through the greenhouse every hour, continuously collecting temperature and humidity data and calculating the average value. Then, using bilinear interpolation, it retrieves the corresponding disease index from a constructed disease index table. When the calculated disease index is greater than 5.00, the current temperature and humidity are favorable for *Cyclocarya paliurus* to produce pathogenic spores, indicating a high risk. When four hours of high risk have accumulated, it is assumed that a sufficient number of pathogenic spores will be produced, and the system sends a command to the automatic spatial spraying device to perform a pesticide application.

[0102] After receiving the work order, the automatic spatial spraying device begins to move and spray. The spray flow rate has been calibrated, with a water consumption of 2L / acre. The target flow rate of the nozzles is calculated using the following formula:

[0103]

[0104] In the formula, 666.67 represents the area of ​​one mu (approximately 0.16 acres), Q represents the target flow rate in L / min, D represents the spraying distance (taken as the width of the greenhouse, which is 8.30m in this embodiment), M represents the water consumption per mu (approximately 0.16 acres), which is 2L / mu in this embodiment, and v represents the travel speed of the automatic spatial spraying device, which is 60m / min.

[0105] After the pesticide application is completed, the system will stop automatically applying pesticides within the safe interval for pesticide use, and will wait for manual inspection of the application effect.

[0106] To test the beneficial effects of the present invention, field tests were conducted:

[0107] Three adjacent greenhouses were selected, and Zhongnong No. 6 cucumbers were sown on the same date, with the same ventilation, irrigation, and management measures. Five cucumber plants were sprayed with a 105 CFU / mL suspension of *Corynebacterium cucumeris* spores at the center of each greenhouse. Three greenhouses were then left untreated as a control group. Manual application every 7 days and the automated application equipment developed in this embodiment were used. Both manual and automated applications used 400 g / L of chlorfluazuron·pyraclostrobin (mass fraction 35.2%, including 17.6% chlorfluazuron and 17.6% pyraclostrobin), diluted 200 times, with a spray volume of 2 L / mu (approximately 0.067 hectares), classified as ultra-low volume spraying. Disease index was investigated at 5, 15, and 30 days, with samples taken at 5 points. Disease index and control efficacy were investigated according to DB37 / T4105-2020.

[0108]

[0109]

[0110] The automatic space spraying device of this invention can apply pesticides in a targeted manner when there is a risk of disease spread, and the control effect is similar. In the later stage of the experiment, one application was reduced. At the same time, the ultra-low volume spraying does not significantly increase the humidity in the greenhouse, thus delaying the spread of diseases. In addition, the amount of pesticide used during the 21-day growing period was reduced by 39.74% compared with manual regular application.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A spraying method using an automatic spatial spraying device, the automatic spatial spraying device comprising a body, a pulley assembly, and a spraying assembly, the pulley assembly capable of driving the body to move along a track; the spraying assembly comprising a spray pipe, a liquid delivery pipe, and a gas delivery pipe, one end of the spray pipe having a first end plate with a spray nozzle on the first end plate, the liquid delivery pipe being disposed within the spray pipe, and the outer peripheral wall of the liquid delivery pipe being spaced apart from the inner peripheral wall of the spray pipe to define a gas channel, one end of the liquid delivery pipe being open to form a liquid outlet, the liquid outlet being spaced apart from the spray nozzle along the axial direction of the spray pipe to allow the gas channel to communicate with the spray nozzle, the gas delivery pipe being connected to the gas channel; when liquid pesticide in the liquid delivery pipe is sprayed from the liquid outlet, it is impacted by high-pressure gas in the gas channel, and the liquid pesticide diffuses at the spray nozzle to form an atomized pesticide, characterized in that... include: S1. Construct a plant disease index table based on temperature and humidity; S2. The automatic space spraying device performs patrol operations to obtain temperature and humidity distribution information in the greenhouse; S3. Based on the temperature and humidity distribution information, find the corresponding disease index in the plant disease index table; S4. Control the automatic space spray device to perform spraying operations or hibernation operations according to the magnitude of the disease index; S1 includes: S11. Collect and isolate field pathogens and culture them at different temperatures and humidity levels for a first preset time to prepare spore suspensions; S12. After inoculating the experimental plants that have been cultivated to the preset stage with spore suspension, culture them for a second preset time. S13. Move the experimental plants to natural sunlight and cultivate them for a third preset time. S14. Conduct a disease index survey on the experimental plants to construct the plant disease index table.

2. The spraying method using an automatic spatial spraying device according to claim 1, characterized in that, The formula for calculating the spray flow rate Q of the spray assembly during spraying operations is as follows: Q=DMv / 666.67 Where Q is in L / min; D represents the spray distance; M represents the water consumption per mu (unit of land area); v represents the travel speed of the automatic space spray device.

3. The spraying method using an automatic spatial spraying device according to claim 1 or 2, characterized in that, The automatic space spray device includes a cable chain assembly that can move with the machine body. The cable chain assembly is equipped with an air supply pipe and a liquid supply pipe. The air supply pipe is connected to the air delivery pipe, and the liquid supply pipe is connected to the liquid delivery pipe.

4. The spraying method using an automatic spatial spraying device according to claim 1 or 2, characterized in that, The automatic space spray device includes a sensor assembly mounted on the body to collect ambient temperature and humidity.

5. The spraying method using an automatic spatial spraying device according to claim 4, characterized in that, The pulley assembly includes a pulley, a transmission component, and a motor. The motor is located inside the machine body and drives the transmission component to rotate the pulley.

6. The spraying method using an automatic spatial spraying device according to claim 5, characterized in that, The automatic space spray device includes a controller, which is electrically connected to the motor, and the sensor assembly is electrically connected to the controller.

7. The spraying method using an automatic spatial spraying device according to claim 1, characterized in that, S4 includes: S41. If the disease index is greater than the preset value, the automatic spatial spraying device is controlled to perform spraying operations; after the application is completed, the automatic application will not be performed again within the safe interval period for pesticide use, and the application effect will be checked manually. S42. If the disease index is less than the preset value, the automatic space spray device is put into hibernation. After the automatic space spray device completes hibernation, S2 and S3 are executed again.

8. The spraying method using an automatic spatial spraying device according to claim 7, characterized in that, S41 includes: if the disease index is greater than a preset value, then after waiting for a set time, controlling the automatic space spray device to perform spraying operations.

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