An unmanned aerial vehicle low-altitude fog dissipation device

Abstract

The present invention discloses a low-altitude fog elimination device for unmanned aerial vehicles, belonging to the technical field of unmanned aerial vehicles; it includes an airframe, a wind power assembly arranged below the airframe, and an silver iodide smoke stick installed at the outlet end of the wind power assembly; the wind power assembly includes: a high-speed fan, and a flow guide cover with a rear-end contraction arranged at the air outlet end of the high-speed fan; the silver iodide smoke stick is inserted into the straight tube at the tail end of the flow guide cover; the high-speed fan is provided with an electric heating mechanism, and the silver iodide smoke stick is provided with an ignition mechanism. In the present invention, data fusion calculation is carried out to achieve accurate perception of fog concentration; the accuracy and stability of fog detection are improved, providing more comprehensive and reliable information support for fog elimination operations; through auxiliary components, the flexibility, reliability and efficiency of fog elimination operations are improved; according to fog concentration and other environmental parameters, parameters such as the power of the wind power assembly and the silver iodide release amount are adjusted in real time to achieve more intelligent and environment-adaptive fog elimination operations.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles, and particularly to a low-altitude fog elimination device for unmanned aerial vehicles. Background Art

[0002] Foggy weather has brought adverse effects to many fields; for example, in the fields of transportation and aerospace, thick fog reduces visibility, leading to problems such as traffic accidents and flight delays. Therefore, people have been using scientific means to artificially intervene in the weather.

[0003] Existing fog elimination means mostly rely on ground equipment or large aircraft, which are costly and lack flexibility; especially for low-altitude fog, it is difficult to play a role. In recent years, with the development of unmanned aerial vehicle technology, the use of rotorcraft to cooperate with the spreading of materials such as silver iodide has been developed in the direction of low-altitude fog elimination operations.

[0004] Through the use and research of our unit in recent years, it has been found that there are still some deficiencies in the current low-altitude fog elimination devices for unmanned aerial vehicles. For example, relying on the natural combustion of silver iodide smoke sticks or simply spreading silver iodide particles, etc., to release silver iodide into the fog range; however, the concentration of fog is inconsistent everywhere, resulting in a large consumption of the agent to ensure the effect, causing a certain waste; the spreading of silver iodide and the smoke are not very controllable, resulting in low operation efficiency; during operation, the silver iodide agent is prone to getting damp in the storage bin, affecting the effect; the operation process is basically in a fixed mode, with low refinement, further leading to high consumption. Summary of the Invention

[0005] The purpose of the present invention is to solve the above problems in the prior art, and to propose a low-altitude fog elimination device for unmanned aerial vehicles.

[0006] In order to achieve the above purpose, the present invention adopts the following technical scheme:

[0007] A low-altitude fog elimination device for unmanned aerial vehicles, comprising a fuselage, a wind power assembly arranged below the fuselage, and a silver iodide smoke stick installed at the outlet end of the wind power assembly;

[0008] The wind power assembly includes: a high-speed fan, and a guide cover with a rear-end contraction arranged at the air outlet end of the high-speed fan; the silver iodide smoke stick is inserted into the straight tube at the tail end of the guide cover; the high-speed fan is provided with an electric heating mechanism, and the silver iodide smoke stick is provided with an ignition mechanism.

[0009] In some embodiments, a through air duct is arranged vertically at the central position of the fuselage; the air inlet end of the wind power assembly is connected to the lower end of the air duct through a hose; during operation, air is drawn from the top of the fuselage downward.

[0010] In some embodiments, a plurality of the wind power assemblies are provided, and their air outlet ends are all arranged facing outward.

[0011] In some embodiments, a plurality of air guiding holes are circumferentially formed in the fairing; the axes of the air guiding holes form an acute angle with the axis of the fairing, diffusing the air flow outward to form a negative pressure area at the tail end position.

[0012] In some embodiments, the wind power assembly further includes: an attitude adjustment bracket;

[0013] The attitude adjustment bracket includes: a clamping seat with an opening downward, a pitch adjustment motor arranged on one side of the clamping seat, and a azimuth adjustment motor installed below the body;

[0014] The output end of the azimuth adjustment motor is assembled and connected to the center position at the top end of the clamping seat; fixed shafts are arranged on both sides of the outer cylinder shell of the high-speed fan, and one of the fixed shafts is in transmission connection with the output end of the pitch adjustment motor;

[0015] A gyroscope is arranged on the attitude adjustment bracket.

[0016] In some embodiments, an expansion chamber is arranged at the top end of the body; the lower end of the expansion chamber is communicated with an air guiding pipe;

[0017] An silver iodide supply assembly is arranged in the expansion chamber.

[0018] In some embodiments, the silver iodide supply assembly is: a multi-layer silver iodide smoke strip mounting seat arranged around the outlet position of the air guiding pipe;

[0019] The top of the expansion chamber is provided with an openable top opening, and the circumferential side of the expansion chamber is provided with a side air inlet.

[0020] In some embodiments, the silver iodide supply assembly is: a silver iodide storage bin with a channel corresponding to the air guiding pipe at the center;

[0021] Microcapsule-encapsulated silver iodide is stored in the silver iodide storage bin;

[0022] A heating mechanism is arranged in the air guiding pipe.

[0023] In some embodiments, the silver iodide storage bin is provided with a discharging assembly;

[0024] The silver iodide storage bin is of a hopper structure and is provided with a flat bottom; the discharging assembly includes: a plurality of vertical pipes vertically arranged at the lower end of the flat bottom and communicating with the silver iodide storage bin, a radial pipe communicated with the lower end of the vertical pipe, and a discharging power member arranged at the tail end of the radial pipe;

[0025] The inner end of the radial pipe penetrates into the air guiding pipe and is provided with a pressure flap;

[0026] A one-way valve that only allows materials to pass downward is provided inside the vertical pipe.

[0027] In some embodiments, the discharging power component is a conveying auger provided at the tail end of the radial pipe.

[0028] In some embodiments, the discharging power component is an air supply annular pipe connected to the tail end of the radial pipe, and an air pump is provided on the air supply annular pipe.

[0029] In some embodiments, a wind cylinder is provided on the side of the machine body; a humidity sensor is provided inside the wind cylinder.

[0030] An anemometer, a lidar, and a camera are provided on the side of the machine body.

[0031] In some embodiments, it further includes a control system.

[0032] During flight, detect the fog concentration in the area where it is located; after triggering the threshold, start the fog elimination operation.

[0033] In the fog elimination operation, silver iodide smoke sticks are burned in the early stage to release silver iodide; afterwards, as the burning stage of the silver iodide smoke sticks changes, the discharging of the silver iodide supply component is gradually started; until the silver iodide smoke sticks are completely burned, all the silver iodide material is provided by the silver iodide supply component.

[0034] The control system controls the flight speed and the power of the wind component in real time according to the fog concentration, the external wind force, and the burning stage of the silver iodide smoke sticks, and cooperatively controls the discharging operation of the silver iodide supply component.

[0035] The control system controls the discharging operation of the silver iodide supply component in real time according to the fog concentration, the external wind force, and the flight speed.

[0036] Compared with the prior art, the present invention provides a low-altitude fog elimination device for unmanned aerial vehicles, which has the following beneficial effects.

[0037] 1. In the present invention, multiple sensors are integrated for data fusion calculation to achieve precise perception of the fog concentration; not only improve the accuracy and stability of fog detection, but also provide more comprehensive and reliable information support for the fog elimination operation; through auxiliary components (attitude adjustment brackets, expansion chambers, silver iodide supply components, etc.), improve the flexibility, reliability, and efficiency of the fog elimination operation; according to the fog concentration and other environmental parameters, adjust parameters such as the power of the wind component and the silver iodide release amount in real time to achieve a more intelligent and environment-adaptive fog elimination operation.

[0038] 2. The present invention forms a controllable air flow to make the flue gas controllable and expand the range; sets up an electric heating mechanism to improve the condensation efficiency; sets up an air guiding pipe penetrating up and down to form an upward suction force; diffuses the air flow to the outside, having a larger coverage area of high-speed hot air; sets up an expansion chamber to increase the carrying capacity; encapsulates silver iodide with microcapsules to reduce the situation of being affected by the environment and having physical property changes during storage.

[0039] Other advantages, objectives and features of the present invention will be described to some extent in the subsequent specification; and to some extent, based on the study of the following text, will be obvious to those skilled in the art; or can be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic structural diagram of the present invention.

[0041] Figure 2 It is a schematic side structural diagram of the present invention.

[0042] Figure 3 It is a schematic bottom structural diagram of the present invention.

[0043] Figure 4 It is a schematic structural diagram of the wind power component.

[0044] Figure 5 It is a schematic structural diagram of the air outlet end of the wind power component.

[0045] Figure 6 It is a schematic sectional structural diagram of the wind power component.

[0046] Figure 7 It is a schematic diagram of the flow guiding form of the air guiding hole.

[0047] Figure 8 It is a schematic diagram of the second state of the present invention.

[0048] Figure 9 It is a schematic diagram of the open state of the expansion chamber.

[0049] Figure 10 It is a top view of the second state of the present invention.

[0050] Figure 11 It is a schematic diagram of the third state of the present invention.

[0051] Figure 12 It is a schematic bottom structural diagram of the silver iodide storage bin.

[0052] Figure 13 It is a schematic top view of the silver iodide storage bin.

[0053] Figure 14 It is a schematic bottom view of the silver iodide storage bin.

[0054] Figure 15 It is a schematic cross-sectional structure diagram of an silver iodide storage bin.

[0055] In the figure:

[0056] 1. Body; 11. Air duct; 2. Wind power component; 21. High-speed fan; 22. Air deflector; 23. Tail-end straight tube; 24. Air guiding hole; 25. Clamping seat; 26. Pitch adjustment motor; 27. Azimuth adjustment motor; 211. Outer cylinder shell; 3. Silver iodide smoke stick; 4. Expansion chamber; 41. Top opening; 42. Side air inlet; 5. Silver iodide smoke stick mounting seat; 6. Silver iodide storage bin; 7. Discharge component; 71. Vertical pipe; 72. Radial pipe; 73. Air supply ring pipe; 8. Air duct. Specific embodiments

[0057] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0058] Refer to Figures 1 - 15 , a low-altitude fog dissipation device for an unmanned aerial vehicle, including a body 1, a wind power component 2 arranged below the body 1, and a silver iodide smoke stick 3 installed at the outlet end of the wind power component 2.

[0059] Thus, a controllable air flow is formed by the wind power component 2 to divert the smoke generated by the silver iodide smoke stick 3, so that the diffusion of the smoke is controllable and the diffusion range is expanded; at the same time, different smoke diffusion speeds, concentrations and coverage ranges can be formed by controlling the wind power.

[0060] Such as Figures 2 - 6 shown; the wind power component 2 includes: a high-speed fan 21, and an air deflector 22 with a rear-end contraction arranged at the air outlet end of the high-speed fan 21; an air flow is formed by the high-speed fan 21 and discharged outward after being contracted and gathered by the air deflector 22.

[0061] It can be understood that an outer cylinder shell 211 is arranged outside the high-speed fan 21 to form an air duct; the air deflector 22 is fixedly assembled at the air outlet end of the outer cylinder shell 211; air enters the outer cylinder shell 211 from the air inlet end and then is discharged through the air deflector 22.

[0062] In addition, the air deflector 22 has a tail-end straight tube 23, which is an integral structure with the contraction part; the silver iodide smoke stick 3 is inserted into the tail-end straight tube 23 of the air deflector 22, and the smoke is released from the outer end.

[0063] It should be noted that for the fixing form of the silver iodide smoke stick 3 and the straight tube 23 at the tail end, forms such as clamping or screw fixing can be adopted; in actual production, select the appropriate form according to the corresponding equipment specifications; for example, fix it by passing through screws.

[0064] It can be understood that the front end of the silver iodide smoke stick 3 cooperates with the straight tube 23 at the tail end to form a seal; the straight tube 23 at the tail end should have an appropriate length and be matched with a silver iodide smoke stick 3 of an appropriate specification.

[0065] Furthermore, the high-speed fan 21 is equipped with an electric heating mechanism; the air passing through is heated. While avoiding a large amount of water vapor adhering to the wind component 2, the formed hot air flow reduces the humidity and increases the temperature in the nearby range. The heated silver iodide is more conducive to condensing with water vapor to form ice crystals, improving the condensation efficiency (in a suitable higher temperature range, the movement of silver iodide molecules is more active, and it is easier to interact with water vapor molecules in the fog, prompting the water vapor to condense with silver iodide particles as the core, increasing the rate of catalytic nucleation and enhancing the fog dissipation effect); when the temperature around the silver iodide smoke stick is increased by heating the air, under the same fog concentration and dosage, the number of ice crystals formed per unit time increases.

[0066] In addition, the density of hot air becomes relatively smaller, generating an upward buoyancy force to form a strong vertical air flow, which helps to carry the silver iodide smoke to spread more quickly and widely in the fog, expanding its coverage range. In addition, the formed convective movement of hot air can disrupt the relatively stable air flow structure of the fog, creating more turbulence, further promoting the full mixing of the silver iodide smoke and the fog, enabling the catalytic reaction to occur in a larger space range, and improving the uniformity and comprehensiveness of fog dissipation.

[0067] It can be understood that the silver iodide smoke stick 3 is equipped with an ignition mechanism, which is uniformly controlled by the control system of the unmanned aerial vehicle; under appropriate conditions, the ignition operation is triggered.

[0068] Furthermore, two or more wind components 2 are symmetrically arranged, and the air outlet ends are all arranged facing outward; to balance the high-speed air flow to the outside.

[0069] Such as Figure 2 As shown, for a long-strip-shaped unmanned aerial vehicle, it is preferably provided with two wind components 2; for a square or circular unmanned aerial vehicle, it is preferably provided with two sets of symmetrically arranged wind components 2, that is, 4 wind components 2 are arranged in a surrounding manner.

[0070] After the wind component 2 is set, the diffusion of the flue gas is efficiently controlled; through multiple symmetrically arranged wind components 2, the output air flow is also balanced; however, due to the generation of a large intake air flow, it has a certain adverse impact on the running stability of the unmanned aerial vehicle itself. Therefore, considering the aerodynamic factors, the airframe 1 is modified.

[0071] Specifically, Figure 1 As shown; an air duct 11 is provided at the center of the machine body 1 and runs through it from top to bottom.

[0072] Correspondingly, the air inlet end of the wind assembly 2 is connected to the lower end of the air duct 11 through a hose; during operation, air is drawn downward from the top of the body 1; not only does it not cause adverse interference to the operation of the UAV, but it also forms an upward suction force, which can reduce the UAV's own power requirements and make the flight process more stable.

[0073] Correspondingly, a plurality of wind power components 2 are provided; the air inlet ends of the plurality of wind power components 2 are all connected to the air duct 11, and the air outlet ends thereof are all arranged toward the outside.

[0074] Furthermore, an electric heating mechanism is provided in the air duct 11 to dehumidify and heat the incoming air, thereby ensuring that the output airflow is within a suitable temperature range and better improving the condensation efficiency of silver iodide.

[0075] After considering the design factors of inlet and outlet airflow, we further considered optimizing the diffusion of silver iodide.

[0076] like Figures 5 - 7 As shown; a plurality of groups of air guide holes 24 are arranged around the air guide cover 22; and the axis of the air guide hole 24 forms an acute angle with the axis of the air guide cover 22; thereby, the air flow is diffused outward, with a larger high-speed hot air coverage area, and a negative pressure zone is formed at the tail end.

[0077] It is understandable that after being ignited, the silver iodide cigarette stick 3 generates smoke; in conventional drones, the smoke will only diffuse backwards under the influence of the flight path. In the solution of the present application, the negative pressure area at the tail end position draws the smoke forward, and then the smoke is dispersed outward by the hot air diffusing outwards, forming a large coverage area; not only the guidance of the smoke is controllable, but also the coverage of the smoke is improved.

[0078] In some embodiments, the wind power component 2 further includes: an attitude adjustment bracket.

[0079] Among them, the attitude adjustment bracket includes: a clamping seat 25 with an opening facing downward, a pitch adjustment motor 26 arranged on one side of the clamping seat 25, and an azimuth adjustment motor 27 installed under the body 1; the output end of the azimuth adjustment motor 27 is assembled and connected to the top center position of the clamping seat 25; fixed shafts are arranged on both sides of the outer cylinder shell 211 of the high-speed fan 21, and one of the fixed shafts is transmission-connected to the output end of the pitch adjustment motor 26.

[0080] Furthermore, a gyroscope is provided on the attitude adjustment bracket.

[0081] During the operation, the attitude of the wind power component 2 is adjusted corresponding to the attitude of the UAV to ensure the flight stability and the orientation of the flue gas. The whole operation process is reliable and efficient.

[0082] In the above solution, silver iodide smoke sticks 3 are used for the operation. Due to the structural limitations of the UAV itself and in order to cooperate with the wind power component 2, only one silver iodide smoke stick 3 can be paired with one wind power component 2, which limits the operation amount.

[0083] Therefore, we further designed the material supply of silver iodide.

[0084] As Figures 8 - 15 shown; an expansion chamber 4 is provided at the top of the fuselage 1. The lower end of the expansion chamber 4 is communicated with the air duct 11. A silver iodide supply component is arranged in the expansion chamber 4. By cooperating with the design of the expansion chamber 4, the carrying capacity is increased on the basis of not having a great impact on the fuselage.

[0085] In some embodiments, the silver iodide supply component is: a multi-layer silver iodide smoke stick mounting seat 5 arranged around the outlet position of the air duct 11 for placing the silver iodide smoke stick 3.

[0086] It should be noted that here, due to the volume limitation of the expansion chamber 4, the silver iodide smoke stick 3 adopts a short form; the ignition mechanism is arranged in the silver iodide smoke stick mounting seat 5 to increase the amount of medicine of a single silver iodide smoke stick 3.

[0087] Correspondingly, the top of the expansion chamber 4 is provided with an openable top opening 41, and the side of the expansion chamber 4 is provided with a side air inlet 42.

[0088] It should be noted that when the top opening 41 is opened, the air flow passes through, forming an upward suction force, which cooperates with the wind power component 2; if it is necessary to increase the gravitational force on the flue gas in the expansion chamber 4, the top opening 41 is closed or reduced; at this time, the flow rate of the side air inlet 42 will be increased; after the air enters from the side air inlet 42, it takes the flue gas into the air duct 11 and then discharges it outward through the flow guide cover 22.

[0089] Furthermore, it is paired with: a heating mechanism is arranged in the air duct 11.

[0090] It can be understood that at this time, the path of the flue gas increases. The heating mechanism in the air duct 11 reheats the just-discharged flue gas to further activate the movement of silver iodide molecules; at the same time, the air is heated and dehumidified to ensure that the hot air is within a suitable temperature range.

[0091] In some other embodiments, the silver iodide supply component is: a silver iodide storage bin 6 with a channel corresponding to the air guiding pipe 11 at the center; the silver iodide storage bin 6 stores microcapsule-encapsulated silver iodide; the microcapsule encapsulation method is adopted to reduce the situation of being affected by the environment and having physical property changes during storage; at the same time, a heating mechanism arranged in the air guiding pipe 11 is matched, and the outer layer is removed after the material is discharged, and the silver iodide plays a role.

[0092] Correspondingly, the silver iodide storage bin 6 is provided with a discharging component 7 to controllably discharge the internal materials.

[0093] Among them, the silver iodide storage bin 6 is of a hopper structure and is provided with a flat bottom; the discharging component 7 includes: a plurality of vertical pipes 71 vertically arranged at the lower end of the flat bottom and communicating with the silver iodide storage bin 6, a radial pipe 72 connected to the lower end of the vertical pipe 71, and a discharging power component arranged at the tail end of the radial pipe 72.

[0094] Among them, the inner end of the radial pipe 72 penetrates into the air guiding pipe 11 and is provided with a pressure flap to prevent the natural scattering of materials.

[0095] It can be understood that the pressure flap is set with an appropriate closing force; in the daily state, under the action of a force application mechanism such as gravity or a torsion component, the pressure flap is pressed at the end to block the radial pipe 72; when discharging is required, the pressure flap is pushed outwards and opened to discharge the materials into the air guiding pipe 11.

[0096] In addition, a one-way valve that only allows materials to pass downward is arranged in the vertical pipe 71 to prevent the backflow of materials.

[0097] Thus, through a plurality of radial pipes 72, not only the discharging of the silver iodide storage bin 6 is more uniform, but also the materials entering the air guiding pipe 11 are less aggregated and more dispersed, which is beneficial to its subsequent action.

[0098] In some embodiments, the discharging power component is: a conveying auger arranged at the tail end of the radial pipe 72; through the auger conveying, the materials push open the pressure flap; by controlling the rotation speed of the conveying auger, the discharging can be carried out controllably.

[0099] In some other embodiments, the discharging power component is: a gas supply ring pipe 73 connected to the tail end of the radial pipe 72; correspondingly, an air pump is arranged on the gas supply ring pipe 73; in this embodiment, the discharging power component is in a pneumatic form.

[0100] As Figures 11 - 15 shown; the gas supply ring pipe 73 is connected to multiple or all of the radial pipes 72; it conveys high-pressure gas, and the air flow is conveyed along the radial pipe 72, a negative pressure is formed in the vertical pipe 71, and the silver iodide materials are sucked in under the cooperation of the gravity; the silver iodide materials are flushed open the pressure flap along with the high-pressure gas and enter the air guiding pipe 11.

[0101] The pneumatic discharging method enables controllable discharging speed, without causing adhesion or blockage inside the pipe, resulting in better performance.

[0102] It should be noted that in the above two discharging forms, the discharging speed is variable; the required discharging amount is calculated according to the real-time external environment, and real-time dynamic adjustment is carried out.

[0103] In some embodiments, an air duct 8 is provided on the side of the body 1; a humidity sensor is provided inside the air duct 8; preferably, an air extraction component is also provided inside the air duct 8; at the same time, an anemometer, a lidar and a camera are provided on the side of the body 1. The above-mentioned multiple components are used to obtain external environment information, cooperate with flight control, and conduct operation regulation.

[0104] Among them, the air duct 8 has a straight tube structure. When the flight direction is consistent with the axis of the air duct 8, air can be directly inhaled; when the flight direction is misaligned with it, the air extraction component can be used to accelerate the inhalation of external air; data is obtained through the humidity sensor and the fog concentration is calculated through conversion; the anemometer obtains the external wind speed and cooperates to calculate the appropriate flight speed and flight route; the camera captures images and assists in calculating the fog concentration after processing; the lidar can not only measure the fog concentration, but also detect the change of fog ahead, providing better support for operation changes.

[0105] Specifically: Images are captured by the camera, and the fog characteristics in the images (such as the gray value and contrast of the fog) are analyzed through image processing algorithms to preliminarily judge the fog concentration; combined with machine learning algorithms, the images captured by the camera are trained and learned to establish a mapping relationship between the fog concentration and the image characteristics, improving the accuracy of fog concentration detection; the lidar emits laser beams and receives the reflected signals, and calculates the distance and shape of the obstacles ahead by measuring the propagation time and reflection intensity of the laser beams; in a fog environment, the scattering and attenuation degree of the laser beams are closely related to the fog concentration; the fog concentration is judged by analyzing the reflection signal intensity of the lidar; in addition, combined with the spatial distribution information, the lidar can also provide a three-dimensional distribution map of the fog concentration, providing more comprehensive information support for fog elimination operations and assisting in flight route planning; the humidity sensor directly measures the humidity value in the environment, reflecting the water content in the fog; the data of the humidity sensor is used as a supplement and verification of the perception results of the camera and the lidar, improving the reliability and stability of fog concentration detection.

[0106] The data of the camera, lidar and humidity sensor are fused and processed, and algorithms such as weighted average, Kalman filter and particle filter are used to comprehensively consider the advantages and limitations of each sensor to obtain more accurate and comprehensive fog concentration information; according to the fused fog concentration information, combined with environmental parameters such as wind speed, parameters such as flight speed, path and spreading amount are calculated in real time to achieve precise fog elimination.

[0107] It also includes: a control system.

[0108] During flight, it detects the fog concentration in the area where it is located; after triggering the threshold, it starts the fog elimination operation.

[0109] During the fog elimination operation, silver iodide is released by burning silver iodide smoke sticks in the early stage; afterwards, as the burning stage of the silver iodide smoke sticks changes, the feeding of the silver iodide supply component is gradually started; until the silver iodide smoke sticks are completely burned, all the silver iodide material is provided by the silver iodide supply component.

[0110] The control system controls the flight speed and the power of the wind component in real time according to the fog concentration, the external wind force, and the burning stage of the silver iodide smoke sticks, and coordinates the control of the feeding operation of the silver iodide supply component; the control system controls the feeding operation of the silver iodide supply component in real time according to the fog concentration, the external wind force, and the flight speed.

[0111] The specific process is as follows.

[0112] After the UAV low-altitude fog elimination device is started, the UAV climbs and approaches the fog area; according to the data such as the fog concentration and the external wind force real-time monitored by sensors such as lidar, cameras, and humidity sensors, it determines whether fog elimination operation is required (in areas with low fog concentration and strong wind, fog elimination operation may not be carried out); if required, the burning process of the silver iodide smoke sticks is started.

[0113] During the burning process of the smoke sticks, the fog concentration, the external wind force, and the burning stage of the silver iodide smoke sticks are real-time monitored; according to these data, the flight speed of the UAV and the power of the wind component are dynamically adjusted to ensure that the generated silver iodide particles are effectively diffused into the fog. For example, when the fog concentration is high and the external wind force is small, the flight speed is appropriately reduced and the power of the wind component is increased, so that the particles generated by the burning of the silver iodide smoke sticks can be better diffused into the fog and the fog elimination effect is improved.

[0114] At the end of the burning of the smoke sticks, the amount of flue gas decreases, and the feeding operation of the silver iodide supply component is coordinated to ensure the amount of silver iodide particles and guarantee the fog elimination effect; at this time, according to the pre-set flue gas amount change model, as well as the actual fog concentration, external wind force, UAV flight state, etc., the feeding amount and feeding speed of the silver iodide supply component are precisely controlled to achieve the best fog elimination effect.

[0115] After the smoke stick burns out, only the silver iodide supply component provides silver iodide; in subsequent fog dissipation operations, data such as fog concentration, external wind speed, and flight speed are continuously monitored in real time, and the discharge amount and discharge speed of the silver iodide supply component are dynamically adjusted according to these data to ensure that silver iodide particles can be continuously and evenly dispersed into the fog, achieving a continuous and effective fog dissipation effect. For example, when the fog concentration decreases and the external wind speed increases, the control system will appropriately reduce the discharge amount of the silver iodide supply component and lower the discharge speed to avoid excessive dispersion of silver iodide particles and also save the usage amount of silver iodide.

[0116] Through the synergistic effect of burning the smoke stick in the early stage and the silver iodide supply component in the later stage, as well as the real-time adjustment of the control system, the UAV low-altitude fog dissipation device can efficiently and reliably eliminate fog; it can adapt to different fog concentrations, external wind speeds, and flight states, with strong adaptability and flexibility; it monitors and adjusts various parameters in real time to ensure the quantity and coverage range of silver iodide particles, improving the fog dissipation effect while saving the usage amount of silver iodide.

[0117] In addition, we designed an example of an adjustment algorithm accordingly.

[0118] Flight speed adjustment: The fog concentration and external wind speed are continuously monitored in real time through sensors (anemometer, lidar, camera, humidity sensor, etc.) carried by the UAV; according to the monitored data and in combination with the pre-set flight speed adjustment strategy, the control system dynamically adjusts the flight speed of the UAV to ensure that silver iodide particles can be effectively dispersed into the fog.

[0119] V = V max ×(( C max - C ) / C max )×(( W max - W ) / W max )

[0120] Wherein, V is the adjusted flight speed, V max is the maximum flight speed, C is the current fog concentration, C max is the maximum fog concentration threshold, W is the current wind speed, W max is the maximum wind speed threshold.

[0121] Fan power adjustment: According to the fog concentration and the external wind speed, the control system adjusts the power of the wind component in real time; when the fog concentration is high and the external wind speed is low, the fan power is increased to enhance the air flow and help the silver iodide particles to spread better; when the fog concentration is low and the external wind speed is high, the fan power is reduced.

[0122] P = P min +( P max - P min )×( C / C max )×(( W max - W ) / W max )

[0123] Among them, P is the adjusted fan power, P min is the minimum fan power, P max is the maximum fan power, C is the current fog concentration, C max is the maximum fog concentration threshold, W is the current wind speed, W max is the maximum wind speed threshold.

[0124] Dispensing amount adjustment: According to parameters such as fog concentration, external wind speed, and flight speed, the control system calculates the required silver iodide dispensing amount in real time; when the fog concentration is high and the external wind speed is low, the dispensing amount is increased to ensure the fog dissipation effect; when the fog concentration is low and the external wind speed is high, the dispensing amount is reduced to save silver iodide.

[0125] Q = Q min +( Q max - Q min )×( C / C max )×(( W max - W ) / W max )

[0126] Among them, Q is the adjusted dispensing amount, Q min is the minimum dispensing amount, Qmax is the maximum seeding amount, C is the current fog concentration, C max is the maximum fog concentration threshold, W is the current wind speed, W max is the maximum wind speed threshold.

[0127] In the present invention, multiple sensors are integrated for data fusion calculation to achieve accurate perception of fog concentration; not only improving the accuracy and stability of fog detection, but also providing more comprehensive and reliable information support for fog dissipation operations; through auxiliary components (such as attitude adjustment brackets, expansion chambers, silver iodide supply components, etc.), improving the flexibility, reliability and efficiency of fog dissipation operations; according to fog concentration and other environmental parameters, adjusting parameters such as the power of the wind component and the silver iodide release amount in real time to achieve more intelligent and environment-adapted fog dissipation operations.

[0128] In the present invention, a controllable air flow is formed through the wind component 2 to make the flue gas controllable and expand the range, and different flue gas diffusion speeds, concentrations and coverage ranges can be formed; the flow guide cover 22 cooperates with the silver iodide smoke stick 3 to further disperse the flue gas; an electric heating mechanism is set to improve the condensation efficiency, and the hot air forms a vertical air flow, so that the flue gas diffuses more quickly and widely in the fog; at the same time, turbulence is formed to promote the full mixing of silver iodide smoke and fog; a vertically penetrating air duct 11 is set, which does not cause adverse interference to the operation of the unmanned aerial vehicle, and also forms an upward suction force, which can reduce the power demand of the unmanned aerial vehicle itself; the air flow is diffused outward, with a larger coverage area of high-speed hot air, and a negative pressure area is formed at the tail end position; the attitude adjustment bracket ensures the flight stability and adjusts the flue gas orientation, and the whole operation process is reliable and efficient; an expansion chamber 4 is set to increase the carrying capacity; the flow rate of the side air inlet 42 is increased to bring the flue gas into the air duct 11; silver iodide is encapsulated in microcapsules to reduce the situation of being affected by the environment and having physical property changes during storage, and the outer layer is removed after discharging, and silver iodide plays a role; multiple components obtain external environmental information, cooperate with flight control, and perform operation regulation.

[0129] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An anti-fog device for low-altitude unmanned aerial vehicles, characterized in that, It comprises a machine body (1), a wind power assembly (2) arranged below the machine body (1), and a silver iodide smoke strip (3) installed at the outlet end of the wind power assembly (2); The wind power assembly (2) comprises: a high-speed fan (21), and a retracted air guide cover (22) arranged at the rear end of the air outlet of the high-speed fan (21); the silver iodide cigarette rod (3) is inserted into the rear end straight cylinder (23) of the air guide cover (22); the high-speed fan (21) is provided with an electric heating mechanism, and the silver iodide cigarette rod (3) is provided with an ignition mechanism; An air duct (11) is provided at the center of the machine body (1) and runs through it from top to bottom; the air inlet end of the wind power component (2) is connected to the lower end of the air duct (11) via a hose; during operation, air is drawn downward from the top of the machine body (1); An expansion chamber (4) is provided at the top of the machine body (1); the lower end of the expansion chamber (4) is in communication with an air duct (11); a silver iodide supply assembly is provided in the expansion chamber (4); The silver iodide supply component comprises: a silver iodide storage bin (6); a channel is arranged at the center of the silver iodide storage bin (6) corresponding to the air duct (11); microcapsule-encapsulated silver iodide is stored in the silver iodide storage bin (6); and a heating mechanism is arranged in the air duct (11); The silver iodide storage bin (6) is provided with a discharge assembly (7); the silver iodide storage bin (6) is a bucket structure and is provided with a flat bottom; the discharge assembly (7) comprises: a plurality of vertical pipes (71) vertically arranged at the lower end of the flat bottom and connected to the silver iodide storage bin (6), radial pipes (72) arranged at the lower ends of the vertical pipes (71) and connected to the discharge assembly (71), and a discharge power member arranged at the rear ends of the radial pipes (72); the inner ends of the radial pipes (72) penetrate into the air duct (11) and are provided with a pressure flap; and a one-way valve is provided in the vertical pipe (71) for allowing materials to pass only downward.

2. The drone low-altitude fog dissipation device according to claim 1, wherein, The wind force components (2) are provided in plurality, and their air outlet ends are all arranged toward the outside.

3. The drone low-altitude fog elimination device according to claim 1, characterized in that, The air guide cover (22) is provided with a plurality of groups of air guide holes (24) around it; the axes of the air guide holes (24) and the axis of the air guide cover (22) form an acute angle, so that the airflow is diffused outwards to form a negative pressure zone at the rear end.

4. The drone low-altitude fog elimination device according to claim 1, wherein, The wind power component (2) further comprises: a posture adjustment bracket; The posture adjustment bracket comprises: a clamping seat (25) with an opening facing downward, a pitch adjustment motor (26) arranged on one side of the clamping seat (25), and an azimuth adjustment motor (27) installed below the machine body (1); The output end of the azimuth adjustment motor (27) is assembled and connected to the top center position of the clamping seat (25); fixed shafts are arranged on both sides of the outer cylinder shell (211) of the high-speed fan (21), and one of the fixed shafts is drivingly connected to the output end of the pitch adjustment motor (26); The posture adjustment bracket is provided with a gyroscope.

5. The drone low-altitude fog elimination device according to claim 1, characterized in that, The silver iodide supply assembly comprises: a multi-layer silver iodide cigarette rod mounting seat (5) arranged around the outlet position of the air duct (11); The top of the expansion chamber (4) is provided with an openable and closable top opening (41), and the annular side of the expansion chamber (4) is provided with a side air inlet (42).

6. The drone low-altitude fog elimination device according to claim 1, characterized in that, Also includes: Control system; Detect the fog concentration in the area during flight; After the trigger threshold is reached, start the fog elimination operation; During the fog elimination operation, silver iodide is released by burning silver iodide smoke sticks in the early stage; After that, as the burning stage of the silver iodide smoke stick changes, the silver iodide supply component is gradually opened to discharge materials; Until the silver iodide smoke stick burns out, all the silver iodide materials are provided by the silver iodide supply component; The control system controls the flight speed and the power of the wind component in real time according to the fog concentration, the external wind force, and the burning stage of the silver iodide smoke stick, and coordinates the discharge operation of the silver iodide supply component; The control system controls the discharge operation of the silver iodide supply component in real time according to the fog concentration, the external wind force, and the flight speed.

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