CN110901921A - Air curtain type spraying anti-drifting device and method for plant protection unmanned aerial vehicle - Google Patents
Air curtain type spraying anti-drifting device and method for plant protection unmanned aerial vehicle Download PDFInfo
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- CN110901921A CN110901921A CN201911225565.9A CN201911225565A CN110901921A CN 110901921 A CN110901921 A CN 110901921A CN 201911225565 A CN201911225565 A CN 201911225565A CN 110901921 A CN110901921 A CN 110901921A
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- 238000005507 spraying Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000007921 spray Substances 0.000 claims abstract description 44
- 239000003814 drug Substances 0.000 claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 238000007664 blowing Methods 0.000 claims abstract description 12
- 241000196324 Embryophyta Species 0.000 claims description 46
- 230000007246 mechanism Effects 0.000 claims description 41
- 238000001514 detection method Methods 0.000 claims description 16
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 11
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 11
- 241001330002 Bambuseae Species 0.000 claims description 11
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 11
- 239000011425 bamboo Substances 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 8
- 230000008021 deposition Effects 0.000 claims description 7
- 239000000575 pesticide Substances 0.000 claims description 4
- 238000005422 blasting Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- 230000036544 posture Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
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- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 239000004917 carbon fiber Substances 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- -1 polyethylene Polymers 0.000 description 1
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- 230000001681 protective effect Effects 0.000 description 1
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- 238000009718 spray deposition Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D1/00—Dropping, ejecting, releasing, or receiving articles, liquids, or the like, in flight
- B64D1/16—Dropping or releasing powdered, liquid, or gaseous matter, e.g. for fire-fighting
- B64D1/18—Dropping or releasing powdered, liquid, or gaseous matter, e.g. for fire-fighting by spraying, e.g. insecticides
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/0089—Regulating or controlling systems
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- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Insects & Arthropods (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Catching Or Destruction (AREA)
Abstract
The invention discloses an air curtain type spraying anti-drifting device and method for a plant protection unmanned aerial vehicle. The anti-drift method comprises the following steps: the air curtain control system sends a blowing signal to the blower, the blower is connected with the blower to perform blowing work, and high-speed airflow is conveyed to the air curtain arrangement barrel; after the air flow is filled in the inner cavity of the air curtain arrangement cylinder, the air flow is blown downwards at a high speed through the air outlet, and an air curtain is formed below the air curtain arrangement cylinder; plant protection unmanned aerial vehicle sprays, and the fog drops down sprays, and the wind-break wall of the one side of side stand at the shower nozzle protects the deposit of fog drops. The invention can block the external wind field by generating the wind wall, effectively reduce the drift of the fog drops and improve the utilization rate and the operation efficiency of the liquid medicine.
Description
Technical Field
The invention relates to a plant protection unmanned aerial vehicle, in particular to an air curtain type spray anti-drifting device and method of the plant protection unmanned aerial vehicle.
Background
In recent years, as the spraying of the agricultural unmanned aerial vehicle has the advantages of low operation cost, strong impact capability, safe operation, no limitation of the growth of crops and the like, the aviation spraying operation mode which is one of important marks of agricultural aviation is rapidly applied and developed.
With the gradual expansion of the spraying application range of the agricultural unmanned aerial vehicle, some defects and shortcomings of the aerial spraying mode of the agricultural unmanned aerial vehicle are gradually exposed. Wherein, external wind field and rotor wind field can cause the influence to the normal deposit of droplet, can cause the droplet liquid medicine to take place to drift, and the deposition route and the position of skew expectation to reduce the operation effect of aviation plant protection.
The existing unmanned aerial vehicle plant protection operation often lacks the monitoring to the droplet deposit, and the droplet that sprays out when leading to the operation receives the influence (especially natural wind) of each side, can not obtain effectual alleviating way, and this often leads to the droplet drift serious, and the production of heavy spray hourglass spraying phenomenon makes the operation effect descend, and the pesticide chemical fertilizer droplet that drifts causes environmental pollution again easily. Currently, many scholars are beginning to find ways to reduce the spray drift in aerial spray operations, such as by adding charges to the spray, adding deposition aids to the liquid, and trying to understand the spray deposition distribution pattern, but with little effect.
Disclosure of Invention
The invention aims to overcome the existing problems and provides the air curtain type spraying anti-drifting device of the plant protection unmanned aerial vehicle, which can effectively reduce the drifting of fog drops and improve the utilization rate of liquid medicine and the operation efficiency of the plant protection unmanned aerial vehicle by generating an air wall to block an external interference air field during operation.
The invention also aims to provide an air curtain type spray anti-drift method for the plant protection unmanned aerial vehicle.
The purpose of the invention is realized by the following technical scheme:
an air curtain type spraying anti-drift device of a plant protection unmanned aerial vehicle comprises an air curtain generating mechanism and an air curtain control system, wherein the air curtain generating mechanism is used for generating a blocking air wall on one side of a spray head of the unmanned aerial vehicle, which is used for spraying liquid medicine fog drops, the air curtain control system is used for controlling an air curtain, the air curtain generating mechanism comprises an air curtain arrangement barrel and an air blower used for sending high-speed air flow, an air inlet and an air outlet are formed in the air curtain arrangement barrel, and the size of the air outlet is smaller than that of the air inlet; the air inlet is communicated with a blast port of the blower and is used for guiding air flow into an inner cavity of the air curtain arrangement barrel; the air outlet is located the bottom that the section of thick bamboo was arranged to the air curtain, and is equipped with a plurality ofly for it down derives at a high speed to arrange the air current in the section of thick bamboo inner chamber with the air curtain.
The working principle of the air curtain type spray drift prevention device is as follows:
the during operation, plant protection unmanned aerial vehicle is close to after waiting to spout the plant of medicine, air curtain control system sends the signal of blast air to the air-blower, the air-blower begins to carry out blast air work after receiving the signal, arrange a section of thick bamboo towards the air curtain and carry high-speed air current, after the air current is full of the inner chamber that the air curtain arranged a section of thick bamboo, blow out from a plurality of air outlets (the size of air outlet is far less than the size of air intake) of arranging according to certain orbit rapidly, blow down through the air outlet at a high speed, thereby arrange the below of a section of thick bamboo at the air curtain and become fast-speed wind wall (air curtain), spray for next liquid medicine.
Then, plant protection unmanned aerial vehicle begins to carry out the liquid medicine spraying, and the droplet sprays from the shower nozzle down, erects the brattice of one side at the shower nozzle and can protect the downward deposit of droplet. When the side wind, the air curtain can weaken mutually with it as the protective screen to reduce the drift volume of droplet effectively, improve the utilization ratio and the plant protection unmanned aerial vehicle operating efficiency of liquid medicine. After the liquid medicine spraying is finished, the air curtain control system controls the air blower to stop blasting air, and the unmanned aerial vehicle navigates back and lands to finish the spraying operation.
In a preferred embodiment of the present invention, the air curtain control system includes an external wind field detection terminal for detecting a wind field condition of an external environment and a central control terminal for controlling a state of an air curtain, and the central control terminal includes a signal exchange module and a data processing module; the wind field conditions comprise the magnitude and direction of wind power; the state of the air curtain comprises the strength of the air curtain and the posture and the orientation of the air curtain;
the external wind field detection terminal sends the wind field conditions detected in real time to the central control terminal, the signal exchange module of the central control terminal processes the signals and transmits the signals to the data processing module, the data processing module contrasts and analyzes the wind power of the wind field conditions, the flow rate of wind flow is set and sent to the air blower through the signal exchange module, and the air blower blows the air curtain arrangement barrel according to the set flow rate of the wind flow. In the actual use process, the data processing module of the central control terminal can send a blowing signal to the blower through the signal exchange module before the spraying work is started to generate an air curtain; meanwhile, the data processing module controls the air blower in real time according to the external wind field environment detected by the external wind field detection terminal, and when the external wind field is large, the data processing module can send a high-power working signal to the air blower, so that the air blower accelerates the flow velocity of wind flow, strengthens a wind wall and resists external wind power; when the external wind field is small, the data processing module can send low-power working signals to the air blower, so that the air blower slows down the flow velocity of the wind flow and retains enough strength of the air wall, the state of the air curtain can be controlled according to the actual external environment, and the normal deposition of the liquid medicine fog drops can be effectively guaranteed.
Preferably, air curtain control system still includes the adjustment mechanism who is used for adjusting the angle of air curtain, air curtain generation mechanism connects on unmanned aerial vehicle through articulated installed part, adjustment mechanism drive air curtain generation mechanism rotates for unmanned aerial vehicle around the articulated shaft on the articulated installed part, adjusts the orientation of air outlet to the direction of adjustment wind current, with the air curtain that obtains different gestures, the different occasions of adaptation.
Further, the outer wind field detection terminal sends the wind field condition detected in real time to the central control terminal, the signal exchange module of the central control terminal processes the signal and transmits the signal to the data processing module, the data processing module contrasts and analyzes the direction of the wind force of the wind field condition, the direction of the wind flow is set, the wind flow is sent to the adjusting mechanism through the signal exchange module, the adjusting mechanism adjusts the posture of the wind curtain generating mechanism according to the set direction of the wind flow, and the flow direction of the wind flow flowing out of the air outlet is enabled to accord with the set flow direction.
Specifically, the adjusting mechanism comprises an adjusting drive motor and a gear transmission structure.
Preferably, the signal exchange module comprises a signal sending module and a signal receiving module.
In a preferred embodiment of the present invention, a plurality of baffles are disposed in the inner cavity of the air curtain arrangement cylinder, and the baffles face the air inlet; the air curtain arrangement barrel is characterized in that a plurality of guide grooves are formed in the guide plate and used for rapidly guiding the air flow to fill the inner cavity of the air curtain arrangement barrel, so that the air flow can be blown out from a plurality of air outlets at high speed.
According to a preferable scheme of the invention, the air outlets are transversely arranged behind the spray heads of the unmanned aerial vehicle along the flying direction of the unmanned aerial vehicle, generally, the unmanned aerial vehicle is provided with a plurality of spray heads which are transversely arranged along the flying direction of the unmanned aerial vehicle, so that a larger spraying range can be obtained on the same flying path; and set up the brattice at unmanned aerial vehicle's shower nozzle rear, protect the droplet.
Specifically, the air curtain arrangement barrel is composed of a vertical cylindrical air bag and a truncated cone-shaped air bag which is symmetrically arranged at two ends and horizontally arranged, is vertically intersected, and is arranged below the air blower; the inlet end of the air curtain arrangement barrel is fixed and communicated with a blast port of the blower, and the center of the bottom of the air curtain arrangement barrel is provided with air outlets arranged along a straight line; wherein, the diameter of the upright cylindrical air bag is equal to that of the big end of the truncated cone-shaped air bag.
Preferably, the air outlets are transversely arranged behind the spray heads of the unmanned aerial vehicle, and are arranged forwards along the flying direction of the unmanned aerial vehicle after turning, so that the spray heads of the unmanned aerial vehicle are surrounded. Therefore, the high-speed air wall is formed behind the spray head, the air curtain is formed on two sides of the spray head, and the influence of an external air field is reduced to the maximum extent.
An air curtain type spraying anti-drift method for a plant protection unmanned aerial vehicle comprises the following steps:
(1) the plant protection unmanned aerial vehicle takes off and is close to the plant to be sprayed with the pesticide;
(2) the air curtain control system sends a blowing signal to the blower, the blower starts blowing after receiving the signal, and high-speed airflow is conveyed to the air curtain arrangement barrel;
(3) after the air flow is filled in the inner cavity of the air curtain arrangement barrel, the air flow is blown downwards through the air outlet at a high speed, so that an air curtain is formed below the air curtain arrangement barrel;
(4) the plant protection unmanned aerial vehicle sprays the liquid medicine, the fog drops are sprayed downwards from the spray head, and the air wall which is laterally erected on one side of the spray head protects downward deposition of the fog drops;
(5) after the liquid medicine spraying is finished, the air curtain control system controls the air blower to stop blasting air, and the unmanned aerial vehicle navigates back and lands to finish the spraying operation.
In a preferable scheme of the present invention, in the step (2), an external wind field detection terminal of the wind curtain control system sends the wind field conditions detected in real time to the central control terminal, a signal exchange module of the central control terminal performs signal processing, and transmits the processed signals to the data processing module, the data processing module contrasts and analyzes the magnitude of the wind power of the wind field conditions, sets the flow rate of the wind flow, and sends the flow rate of the wind flow to the blower through the signal exchange module, and the blower blows the wind curtain arrangement cylinder according to the set flow rate of the wind flow.
In a preferable scheme of the invention, in the step (2), an external wind field detection terminal of the wind curtain control system sends the wind field condition detected in real time to the central control terminal, a signal exchange module of the central control terminal performs signal processing and transmits the signal processing to a data processing module, the data processing module contrasts and analyzes the direction of the wind force of the wind field condition, the direction of the wind flow is set, and the wind flow is sent to the adjusting mechanism through the signal exchange module, and the adjusting mechanism adjusts the posture of the wind curtain generating mechanism according to the set direction of the wind flow, so that the wind flow flowing out of the air outlet is in accordance with the set flow direction.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the air wall (air curtain) is generated on one side of the spray head, and when the fog drops are sprayed downwards from the spray head, the air wall (air curtain) can block an external interference air field, so that the drifting of the fog drops is effectively reduced, and the utilization rate of the liquid medicine and the operation efficiency of the plant protection unmanned aerial vehicle are improved.
2. In the liquid medicine spraying process, the high-speed airflow output from the air outlet of the air curtain arrangement cylinder can turn over the leaves of the plants, so that the deposition of fog drops on the leaf backs and the leaf surfaces of the leaves of the plants and the middle and lower layers of the plants is facilitated, and the pesticide application effect is improved.
3. When the air curtain plays the role of a barrier, part of liquid medicine fog drops can be impacted by high-speed air flow of an air outlet of the air curtain arrangement cylinder to be atomized for the second time, and the liquid medicine fog drops are driven by the air flow to be blown to plants at an accelerated speed.
Drawings
Fig. 1 is a schematic view of a three-dimensional structure of an air curtain type spray anti-drift device applied to an unmanned aerial vehicle.
Fig. 2 is a schematic partial three-dimensional structure diagram of the air curtain type spray anti-drift device in the present invention.
Fig. 3 is a plan view of the air curtain arranging barrel in the present invention.
Fig. 4 is a bottom view of the air curtain arranging barrel in the present invention.
Fig. 5 is a perspective view of the hinge mount of fig. 2.
Fig. 6 is a schematic perspective view of a baffle according to the present invention.
Fig. 7 is a flow chart of the operation of the air curtain type spray drift preventing device of the present invention.
Detailed Description
In order to make those skilled in the art understand the technical solutions of the present invention well, the following description of the present invention is provided with reference to the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
Example 1
Referring to fig. 1 to 4, the air curtain type spraying anti-drift device of the plant protection unmanned aerial vehicle in the embodiment includes an air curtain generating mechanism for generating a blocking air wall on one side of a spray nozzle b of an unmanned aerial vehicle a spraying liquid medicine droplets and an air curtain control system for controlling an air curtain, the air curtain generating mechanism includes an air curtain arrangement cylinder 1 and an air blower 2 for sending high-speed air flow, the air curtain arrangement cylinder 1 is provided with an air inlet 1-1 and an air outlet 1-2, and the size of the air outlet 1-2 is smaller than that of the air inlet 1-1; the air inlet 1-1 is communicated with a blast port of the blower 2 and is used for guiding air flow into an inner cavity of the air curtain arrangement barrel 1; the air outlets 1-2 are located at the bottom of the air curtain arrangement barrel 1, and a plurality of air outlets are arranged and used for guiding air flow in the inner cavity of the air curtain arrangement barrel 1 downwards at a high speed. The blower 2 is an axial flow blower.
The air curtain control system comprises an external wind field detection terminal for detecting the wind field conditions of the external environment and a central control terminal for controlling the state of the air curtain, wherein the central control terminal comprises a signal exchange module and a data processing module; the wind field conditions comprise the magnitude and direction of wind power; the state of the air curtain includes the strength of the air curtain and the attitude and orientation of the air curtain.
Referring to fig. 1-5, the air curtain control system further comprises an adjusting mechanism for adjusting the angle of the air curtain, the air curtain generating mechanism is connected to the unmanned aerial vehicle a through the hinged mounting part 3, the adjusting mechanism drives the air curtain generating mechanism to rotate around the hinged shaft on the hinged mounting part 3 relative to the unmanned aerial vehicle a, and the orientation of the air outlet 1-2 is adjusted, so that the direction of air flow is adjusted to obtain the air curtains with different postures, and the air curtain control system is suitable for different occasions. Specifically, the hinge mounting member 3 is a carbon fiber plate having advantages of high strength and light weight.
Specifically, the adjusting mechanism comprises an adjusting driving motor, a driving piece and a gear transmission structure, the gear transmission structure comprises a driving gear and a driven gear, and the driving gear is connected with the adjusting driving motor and drives the driven gear to rotate; one end of the driving piece is connected with the base, the other end of the driving piece is connected with the driven gear, the driving gear and the driven gear are respectively fixed at one end of the hinge, and the adjusting driving motor and the driving gear are fixed at the same end of the hinge. Of course, the adjusting mechanism may be other turning driving mechanisms capable of driving the air curtain generating mechanism to rotate around the hinge shaft.
Specifically, the signal switching module includes a signal sending module and a signal receiving module, and reference may be made to a signal transmission module capable of implementing signal switching in the prior art.
Referring to fig. 2 and 6, a guide plate 4 is arranged in the inner cavity of the air curtain arrangement barrel 1, and the guide plate 4 is suspended by a fixing plate 5 fixed above the water inlet of the air curtain arrangement barrel 1 and faces the air inlet 1-1; the guide plate 4 is provided with a plurality of guide grooves which are symmetrically arranged by taking the central line as a symmetry axis, and the distance between the guide grooves is 3-20 mm (preferably 8 mm); the guide grooves are used for quickly guiding the air flow to fill the inner cavity of the air curtain arrangement cylinder 1, so that the air flow can be simultaneously blown out from the air outlets 1-2 at a high speed. Further, the number of the guide plates 4 is 1 to 10 (preferably 1).
Further, the air curtain is arranged a section of thick bamboo 1 and the 4 materials of guide plate and is all adopted the polyethylene material, and the dryer can be folded and accomodate when not carrying out the plant protection operation, reduces transportation storage space.
Referring to fig. 1, according to a preferred embodiment of the present invention, the air outlets 1-2 are transversely arranged behind a nozzle b of an unmanned aerial vehicle a along a flight direction of the unmanned aerial vehicle a, generally, a plurality of nozzles b are arranged on the unmanned aerial vehicle a, and the plurality of nozzles b are transversely arranged along the flight direction of the unmanned aerial vehicle a, so that a larger spraying range can be obtained on the same flight path; and set up the brattice in unmanned aerial vehicle a's shower nozzle b rear, protect the droplet. Specifically, the air curtain arrangement barrel 1 is composed of a vertical cylindrical air bag and a truncated cone-shaped air bag which is symmetrically arranged at two ends and horizontally arranged, is vertically intersected, and is arranged below the air blower 2; the inlet end of the air curtain arrangement barrel 1 is fixed and communicated with a blast port of the blower 2, and the center of the bottom of the air curtain arrangement barrel is provided with air outlets 1-2 which are arranged along a straight line; wherein, the diameter L of the upright cylindrical air bag is equal to the diameter H of the big end of the truncated cone-shaped air bag.
Further, the air outlets 1-2 are transversely arranged behind the spray nozzle b of the unmanned aerial vehicle a, and are arranged forwards along the flying direction of the unmanned aerial vehicle a after turning, so that the spray nozzle b of the unmanned aerial vehicle a is surrounded. Therefore, the high-speed air wall is formed behind the spray head b, the air curtain is formed on two sides of the spray head b, and the influence of an external air field is reduced to the maximum extent.
Referring to fig. 1 to 6, the working principle of the air curtain type spray drift prevention device in the embodiment is as follows:
during operation, plant protection unmanned aerial vehicle a is close to after waiting to spout the plant of medicine, air curtain control system sends the signal of blast air to air-blower 2, air-blower 2 receives and begins to carry out the blast air work after the signal, arrange a section of thick bamboo 1 towards the air curtain and carry high-speed air current, after the air current is full of the inner chamber that a section of thick bamboo 1 was arranged to the air curtain, blow out from a plurality of air outlets 1-2 (the size of air outlet 1-2 is far less than the size of air intake 1-1) of arranging according to certain orbit rapidly, blow down through air outlet 1-2 at a high speed to arrange a high-speed wind wall (air curtain) in the below of a section of thick bamboo 1 formation at the air curtain, spout for following liquid.
Then, plant protection unmanned aerial vehicle a begins to carry out the liquid medicine spraying, and the droplet sprays from shower nozzle b down, erects the brattice of one side at shower nozzle b and can protect the downward deposit of droplet. When the side wind, the air curtain can weaken mutually with it as the barrier to reduce the volume of drifting of droplet effectively, improve the utilization ratio of liquid medicine and plant protection unmanned aerial vehicle a operating efficiency. After the liquid medicine spraying is finished, the air curtain control system controls the air blower 2 to stop blowing air, and the unmanned aerial vehicle a navigates back and lands to finish the spraying operation.
Referring to fig. 1 to 7, the air curtain type spray anti-drift method of the plant protection unmanned aerial vehicle in the embodiment includes the following steps:
(1) plant protection unmanned aerial vehicle a takes off, is close to the plant of waiting to spout the medicine.
(2) The air curtain control system sends a blowing signal to the blower 2, and the blower 2 starts blowing after receiving the signal and sends high-speed air flow to the air curtain arrangement barrel 1.
(3) After the air flow is filled in the inner cavity of the air curtain arrangement barrel 1, the air flow is blown downwards through the air outlet 1-2 at a high speed, so that an air curtain is formed below the air curtain arrangement barrel 1.
(4) Plant protection unmanned aerial vehicle a carries out the liquid medicine spraying, and the droplet sprays from shower nozzle b down, and the side is stood the blast wall in one side of shower nozzle b and is protected the decurrent deposit of droplet.
(5) After the liquid medicine spraying is finished, the air curtain control system controls the air blower 2 to stop blowing air, and the unmanned aerial vehicle a navigates back and lands to finish the spraying operation.
In the step (2), the external wind field detection terminal of the wind curtain control system sends the wind field conditions detected in real time to the central control terminal, the signal exchange module of the central control terminal processes the signals and transmits the signals to the data processing module, the data processing module contrasts and analyzes the wind power of the wind field conditions, the flow rate of the wind flow is set and sent to the air blower 2 through the signal exchange module, and the air blower 2 blows the wind curtain arrangement barrel 1 according to the set flow rate of the wind flow. In the actual use process, the data processing module of the central control terminal can send a blowing signal to the blower 2 through the signal exchange module before the spraying work is started to generate an air curtain; meanwhile, the data processing module controls the air blower 2 in real time according to the external wind field environment detected by the external wind field detection terminal, and when the external wind field is large, the data processing module can send a high-power working signal to the air blower 2, so that the air blower 2 accelerates the flow velocity of wind flow, strengthens a wind wall and resists external wind power; when the external wind field is small, the data processing module can send low-power working signals to the air blower 2, so that the air blower 2 slows down the flow velocity of the wind flow and retains enough strength of the air wall, the state of the air curtain can be controlled according to the actual external environment, and the normal deposition of the liquid medicine fog drops can be effectively ensured.
In the step (2), the external wind field detection terminal of the wind curtain control system sends the wind field conditions detected in real time to the central control terminal, the signal exchange module of the central control terminal processes the signals and transmits the signals to the data processing module, the data processing module contrasts and analyzes the direction of the wind force of the wind field conditions, the direction of the wind flow is set, the wind flow is sent to the adjusting mechanism through the signal exchange module, and the adjusting mechanism adjusts the posture of the wind curtain generating mechanism according to the set direction of the wind flow, so that the flow direction of the wind flow flowing out of the air outlets 1-2 accords with the set flow direction.
Example 2
Different from embodiment 1, the air curtain control system in this embodiment includes a detection device, a transmitter, and a receiver, where the transmitter is a remote controller that controls a plant protection unmanned aerial vehicle a to operate, and the receiver is a receiver that is matched with the remote controller, and the receiver receives instruction information sent by the transmitter.
In addition, after the receiver receives the instruction information sent by the transmitter, the action of adjusting the angle of the air curtain air outlet 1-2 is completed by controlling the adjusting mechanism.
The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.
Claims (10)
1. The air curtain type spraying anti-drifting device of the plant protection unmanned aerial vehicle is characterized by comprising an air curtain generating mechanism and an air curtain control system, wherein the air curtain generating mechanism is used for generating a blocking air wall on one side of a spray head of the unmanned aerial vehicle, which is used for spraying liquid medicine fog drops, the air curtain control system is used for controlling an air curtain, the air curtain generating mechanism comprises an air curtain arrangement barrel and an air blower used for sending high-speed air flow, the air curtain arrangement barrel is provided with an air inlet and an air outlet, and the size of the air outlet is smaller than that of the air inlet; the air inlet is communicated with a blast port of the blower and is used for guiding air flow into an inner cavity of the air curtain arrangement barrel; the air outlet is located the bottom that the section of thick bamboo was arranged to the air curtain, and is equipped with a plurality ofly for it down derives at a high speed to arrange the air current in the section of thick bamboo inner chamber with the air curtain.
2. The air curtain type spray anti-drift device of the plant protection unmanned aerial vehicle as claimed in claim 1, wherein the air curtain control system comprises an external wind field detection terminal for detecting wind field conditions of the external environment and a central control terminal for controlling the state of the air curtain, and the central control terminal comprises a signal exchange module and a data processing module; the wind field conditions comprise the magnitude and direction of wind power; the state of the air curtain comprises the strength of the air curtain and the posture and the orientation of the air curtain;
the external wind field detection terminal sends the wind field conditions detected in real time to the central control terminal, the signal exchange module of the central control terminal processes the signals and transmits the signals to the data processing module, the data processing module contrasts and analyzes the wind power of the wind field conditions, the flow rate of wind flow is set and sent to the air blower through the signal exchange module, and the air blower blows the air curtain arrangement barrel according to the set flow rate of the wind flow.
3. The plant protection unmanned aerial vehicle's air curtain formula spraying anti-drift device of claim 2, characterized in that, air curtain control system still includes the adjustment mechanism for adjusting the angle of air curtain, air curtain generation mechanism passes through the articulated mounting piece and connects on unmanned aerial vehicle, adjustment mechanism drive air curtain generation mechanism rotates for unmanned aerial vehicle around the articulated shaft on the articulated mounting piece, adjusts the orientation of air outlet, adjusts the direction of wind-flow.
4. The plant protection unmanned aerial vehicle's air curtain formula spraying prevents floating device of claim 2, characterized in that, outer wind field detection terminal sends the wind field condition that detects in real time to central control terminal, is carried out signal processing by central control terminal's signal exchange module, and transmits to the data processing module in, the direction of this wind field condition wind force of data processing module contrasts analysis, sets for the orientation of wind current, and sends to adjustment mechanism through the signal exchange module in, adjustment mechanism adjusts the gesture of wind curtain generation mechanism according to the orientation of setting for the wind current flow direction that flows out from the air outlet accords with the flow direction of setting.
5. The air curtain type spray drift prevention device of the plant protection unmanned aerial vehicle as claimed in any one of claims 1 to 4, wherein a plurality of guide plates are arranged in the inner cavity of the air curtain arrangement barrel, and the guide plates are opposite to the air inlet; the air curtain arrangement barrel is characterized in that a plurality of guide grooves are formed in the guide plate and used for rapidly guiding the air flow to fill the inner cavity of the air curtain arrangement barrel.
6. The air curtain type spray anti-drift device of the plant protection unmanned aerial vehicle as claimed in claim 5, wherein the air outlet is arranged transversely behind the spray head of the unmanned aerial vehicle along the flight direction of the unmanned aerial vehicle; the air outlet is at the horizontal arrangement in unmanned aerial vehicle's shower nozzle rear earlier, turns round the back and then arranges along the direction of unmanned aerial vehicle flight forward, surrounds unmanned aerial vehicle's shower nozzle.
7. The air curtain type spraying anti-drift device of the plant protection unmanned aerial vehicle as claimed in claim 6, wherein the air curtain arrangement barrel is composed of a vertical cylindrical air bag and a truncated cone-shaped air bag with two symmetrical ends and horizontally arranged, vertically intersected and installed below the air blower; the inlet end of the air curtain arrangement barrel is fixed and communicated with a blast port of the blower, and the center of the bottom of the air curtain arrangement barrel is provided with air outlets arranged along a straight line; wherein, the diameter of the upright cylindrical air bag is equal to that of the big end of the truncated cone-shaped air bag.
8. The air curtain type spraying anti-drift method for the plant protection unmanned aerial vehicle is characterized by comprising the following steps of:
(1) the plant protection unmanned aerial vehicle takes off and is close to the plant to be sprayed with the pesticide;
(2) the air curtain control system sends a blowing signal to the blower, the blower starts blowing after receiving the signal, and high-speed airflow is conveyed to the air curtain arrangement barrel;
(3) after the air flow is filled in the inner cavity of the air curtain arrangement barrel, the air flow is blown downwards through the air outlet at a high speed, so that an air curtain is formed below the air curtain arrangement barrel;
(4) the plant protection unmanned aerial vehicle sprays the liquid medicine, the fog drops are sprayed downwards from the spray head, and the air wall which is laterally erected on one side of the spray head protects downward deposition of the fog drops;
(5) after the liquid medicine spraying is finished, the air curtain control system controls the air blower to stop blasting air, and the unmanned aerial vehicle navigates back and lands to finish the spraying operation.
9. The air curtain type spraying anti-drifting method of the plant protection unmanned aerial vehicle as claimed in claim 8, wherein in step (2), the external wind field detection terminal of the air curtain control system sends the real-time detected wind field conditions to the central control terminal, the signal exchange module of the central control terminal performs signal processing and transmits the processed signals to the data processing module, the data processing module analyzes the magnitude of the wind power of the wind field conditions in a comparison manner, the flow rate of the wind flow is set and is sent to the air blower through the signal exchange module, and the air blower blows the air curtain arrangement barrel according to the set flow rate of the wind flow.
10. The air curtain type spraying anti-drifting method of the plant protection unmanned aerial vehicle as claimed in claim 8, wherein in step (2), the outer wind field detection terminal of the air curtain control system sends the real-time detected wind field conditions to the central control terminal, the signal exchange module of the central control terminal performs signal processing and transmits the processed signals to the data processing module, the data processing module analyzes the direction of the wind force of the wind field conditions in comparison, the direction of the wind flow is set, the wind flow is sent to the adjusting mechanism through the signal exchange module, and the adjusting mechanism adjusts the posture of the air curtain generating mechanism according to the set direction of the wind flow, so that the wind flow flowing out of the air outlet is in accordance with the set flow direction.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911225565.9A CN110901921B (en) | 2019-12-03 | 2019-12-03 | Air curtain type spraying anti-drift device and method for plant protection unmanned aerial vehicle |
| PCT/CN2020/089896 WO2021109455A1 (en) | 2019-12-03 | 2020-05-13 | Air curtain-type spray drift prevention apparatus and method for plant protection unmanned aerial vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911225565.9A CN110901921B (en) | 2019-12-03 | 2019-12-03 | Air curtain type spraying anti-drift device and method for plant protection unmanned aerial vehicle |
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| CN110901921A true CN110901921A (en) | 2020-03-24 |
| CN110901921B CN110901921B (en) | 2024-05-10 |
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| WO2021109455A1 (en) | 2021-06-10 |
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