Engineering surveying and mapping method based on unmanned aerial vehicle

Abstract

The invention discloses an engineering surveying and mapping method based on an unmanned aerial vehicle, and belongs to the technical field of unmanned aerial vehicle surveying and mapping. According to the engineering surveying and mapping method based on the unmanned aerial vehicle, a machine body is included, machine frames are arranged on the machine body at intervals in the circumferential direction, propellers are rotationally connected to the machine frames, the engineering surveying and mapping device further comprises a supporting frame, the supporting frame is arranged at the bottom of the machine body, a working box is arranged at the top of the supporting frame, a rotating shaft is rotationally connected to the working box, and a cleaning mechanism is arranged on the rotating shaft and fixedly connected into the working box; a connecting plate is rotationally connected to the rack, and an air suction mechanism is arranged on the connecting plate; impurities adhered to the surface of the camera can be washed at high pressure, so that the surface of the surveying and mapping camera can be automatically cleaned without returning of the unmanned aerial vehicle, the surveying and mapping working efficiency of the unmanned aerial vehicle is improved, the influence of the impurities on the surface of the camera is reduced, and the surveying and mapping precision of the camera is improved; and the mirror surface of the camera can be purged in the scraping process, so that the cleaning liquid is prevented from remaining on the mirror surface.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicle (UAV) surveying and mapping, and in particular to an engineering surveying and mapping method based on an unmanned aerial vehicle (UAV). Background Art

[0002] Engineering surveying by drones refers to using drones as carriers to obtain aerial data by carrying surveying and mapping sensors. It usually uses the radio conversion and transmission equipment on the drone to transmit data signals to the program control equipment of the surveying and mapping sensor, and then analyzes and images the data signals, thereby achieving rapid, high-precision surveying, three-dimensional modeling and data mapping of ground objects.

[0003] When drones are surveying and mapping outdoors, due to the poor outdoor environment, mosquitoes and dust, the surface of the surveying and mapping camera on the drone will be covered with dust and impurities after long-term use. Traditional surveying and mapping drones do not have a mechanism for self-cleaning the camera surface, resulting in the drone returning to the ground for manual cleaning when the camera needs to be cleaned, which greatly reduces the work efficiency of the drone and also causes the impurities on the camera to affect the surveying and mapping accuracy. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that when the camera needs to be cleaned in the prior art, the surveying and mapping drone needs to return for manual cleaning, which greatly reduces the working efficiency of the surveying and mapping drone and also causes impurities on the camera to affect the surveying and mapping accuracy. A method for engineering surveying and mapping based on drone is proposed to solve the problem that when the camera needs to be cleaned, the surveying and mapping drone needs to return for manual cleaning, which greatly reduces the working efficiency of the surveying and mapping drone and also causes impurities on the camera to affect the surveying and mapping accuracy.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A method for engineering surveying and mapping based on an unmanned aerial vehicle comprises a body, a frame is arranged on the body at circumferential intervals, a propeller is rotatably connected to the frame, and further comprises: a support frame arranged at the bottom of the body, wherein a camera is arranged in the support frame, a working box is arranged on the top of the support frame, a rotating shaft is rotatably connected to the working box, a cleaning mechanism is arranged on the rotating shaft, and a cleaning end of the cleaning mechanism is in contact with the surface of the camera; a support plate is fixedly connected in the working box, wherein a connecting plate is rotatably connected to the frame, a suction mechanism is arranged on the connecting plate, and an air inlet end of the suction mechanism faces an air outlet end of the propeller, an intermittent spiral driving mechanism for driving the connecting plate to rotate is arranged on the support plate, and the air outlet end of the suction mechanism is arranged on the cleaning end of the cleaning mechanism; a liquid storage tank is fixedly connected to the side wall of the working box, wherein a pressurized infusion mechanism is arranged in the working box, the pressurized end of the pressurized infusion mechanism is connected to the liquid storage tank, and the liquid outlet end of the liquid storage tank cooperates with the cleaning end of the cleaning mechanism.

[0006] In order to facilitate the cleaning of impurities on the surface of the camera, preferably, the cleaning mechanism includes a cleaning scraper fixedly connected to the rotating shaft, the tip of the cleaning scraper is in contact with the surface of the camera, a screw rod is rotatably connected in the working box, a movable block is threadedly connected to the screw rod, a first rack is fixedly connected to the movable block, the rotating shaft extends to the working box and a transmission gear is provided, and the transmission gear is meshed with the first rack.

[0007] In order to improve the cleaning effect of the cleaning scraper, further, a liquid spray plate is fixedly connected to the cleaning scraper, a diversion cavity is opened in the liquid spray plate, and a spray hole is opened on the side of the liquid spray plate facing the camera, and the spray hole is connected to the liquid storage tank.

[0008] In order to facilitate the pressurized delivery of the cleaning liquid in the liquid storage tank to the spray plate, further, the booster infusion mechanism includes a booster cylinder fixedly connected to the working box, a booster rod is slidably connected to the booster cylinder, a piston is provided at one end of the booster rod, and the piston is in contact with the inner wall of the booster cylinder, and the other end of the booster rod is fixedly connected to the movable block through a connecting rod, and an air inlet pipe and an air outlet pipe are respectively provided on the booster cylinder, and a one-way valve is provided on the air inlet pipe and the air outlet pipe, and the air outlet pipe is connected to the liquid storage tank pipe through a pipe, and the liquid storage tank is connected to the diversion chamber through a connecting pipe.

[0009] In order to collect and utilize the airflow generated under the propeller, preferably, the suction mechanism includes a suction hood, which is fixedly connected to the connecting plate and provided with a filter. A jet plate is fixedly connected to the cleaning scraper, the jet end of the jet plate faces the surface of the camera, and the suction hood is connected to the jet plate through a telescopic tube.

[0010] In order to facilitate the rotation of the connecting plate, preferably, a mounting block is fixedly connected to the frame, a guide cylinder is fixedly connected to the mounting block, a guide rod is slidably connected to the guide cylinder, a slide groove is provided at the bottom of the frame, a second rack is slidably connected to the slide groove, a half gear is fixedly connected to the connecting plate, and the half gear is meshed with the second rack.

[0011] In order to facilitate intermittent movement of the guide rod, preferably, the intermittent spiral drive mechanism includes an eccentric disk, and the eccentric disk is cam-shaped, the eccentric disk is rotatably connected to the side wall of the support plate, the support plate is fixedly connected with a connecting block, the connecting block is fixedly connected with a transmission cylinder, the transmission cylinder is slidably connected with a transmission rod, one end of the transmission rod is provided with a piston, and the piston is in contact with the inner wall of the transmission cylinder, the other end of the transmission rod is fixedly connected with a connecting seat, the connecting seat is rotatably connected with a roller, the roller is abutted against the outer wall of the eccentric disk, and the transmission cylinder is connected to the guide cylinder through a telescopic tube, a return spring is sleeved on the transmission rod, and the two ends of the return spring are respectively abutted against the connecting seat and the connecting block.

[0012] In order to pressurize the liquid storage tank, preferably, a pressing rod is fixedly connected to the connecting seat, a switch button is fixedly connected to the connecting block, the pressing end of the pressing rod faces the switch button, and a control valve is provided on the connecting pipe, the switch button is electrically connected to the control valve, and when the pressing end of the switch button abuts against the pressing rod, the passage of the connecting pipe is closed.

[0013] In order to reduce the rotation speed of the eccentric disk, preferably, a main pulley is fixedly connected to the screw rod, a connecting shaft is rotatably connected to the support plate, an auxiliary pulley is provided at one end of the connecting shaft, the other end of the connecting shaft is fixedly connected to the eccentric disk, and the main pulley is connected to the auxiliary pulley through a belt.

[0014] In order to facilitate the protection of the support frame, preferably, a support frame is fixedly connected to the bottom of the body, and two groups of support frames are symmetrically arranged, and the support frame is arranged between the two groups of support frames.

[0015] Compared with the prior art, the present invention provides an engineering surveying and mapping method based on a drone, which has the following beneficial effects: 1. The engineering surveying and mapping method based on the UAV can clean the impurities on the surface of the camera by rotating the cleaning mechanism on the surface of the camera and making the cleaning end of the cleaning mechanism fit with the surface of the camera, thereby improving the shooting clarity of the subsequent camera; 2. The engineering surveying and mapping method based on UAV delivers pressurized cleaning fluid to the diverter cavity of the spray plate, so that the spray plate sprays high-pressure cleaning fluid to perform high-pressure washing on the impurities adhering to the surface of the camera. The surface of the surveying and mapping camera can be automatically cleaned without the need for the UAV to return, thereby improving the work efficiency of UAV surveying and mapping, reducing the impact of impurities on the camera surface, and improving the camera's surveying and mapping accuracy.

[0016] 3. The engineering surveying method based on the UAV delivers gas into the jet plate, and the jet end of the jet plate faces the surface of the camera to purge the cleaning liquid on the surface of the camera. During the purge process, the friction between the cleaning liquid and the impurities on the lens surface will be increased, and continuous spraying and purge will improve the cleaning effect of the mirror surface; 4. This engineering surveying and mapping method based on drones uses a jet plate and a cleaning scraper to scrape the cleaning liquid on the surface of the camera. During the scraping process, the mirror surface of the camera can be purged. On the one hand, it can prevent the cleaning liquid from remaining on the mirror surface, reduce the formation of water marks or stains, and help to quickly remove water droplets on the mirror surface to avoid the image quality being affected by the accumulation of water droplets. On the other hand, while scraping the cleaning liquid, blowing can help remove tiny particles and impurities on the mirror surface, improve the cleaning effect, and ensure the clarity of the lens; 5. The engineering surveying and mapping method based on the UAV controls the passage of the connecting pipe through the control valve, so that the liquid spray plate and the air jet plate can separately cooperate with the cleaning scraper to clean or dry the surface of the camera, thereby improving the practicality of the device.

[0017] The parts not involved in the device are the same as the prior art or can be implemented by using the prior art. The present invention can perform high-pressure washing on the impurities adhering to the surface of the camera, and then automatically clean the surface of the surveying and mapping camera without the need for the UAV to return, thereby improving the work efficiency of UAV surveying and mapping, reducing the impact of impurities on the camera surface, and improving the surveying and mapping accuracy of the camera. The mirror surface of the camera can also be swept during the scraping process to avoid liquid residue of the cleaning liquid on the mirror surface, reduce the formation of water marks or stains, and help to quickly remove water droplets on the mirror surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the axonometric structure of an engineering surveying method based on a drone proposed in the present invention Figure 1 ; Figure 2 A schematic diagram of the axonometric structure of an engineering surveying method based on a drone proposed in the present invention Figure 2 ; Figure 3 The structure of the rack proposed by the present invention is shown in FIG. Figure 1 ; Figure 4 The structure of the rack proposed by the present invention is shown in FIG. Figure 2 ; Figure 5 A schematic diagram of the local structure proposed by the present invention Figure 1 ; Figure 6 A schematic diagram of the local structure proposed by the present invention Figure 2 ; Figure 7 A schematic diagram of the local structure proposed by the present invention Figure 3 ; Figure 8 The structure diagram of the cutaway of the present invention Figure 1 ; Fig. 9 The structure diagram of the cutaway of the present invention Figure 2 ; Fig.10 This is a schematic structural diagram of the liquid storage tank proposed by the present invention.

[0019] In the figure: 1, body; 2, frame; 3, propeller; 4, support frame; 5, camera; 6, working box; 7, rotating shaft; 8, cleaning scraper; 9, spray plate; 10, jet plate; 11, liquid storage tank; 12, motor; 13, screw rod; 14, movable block; 15, first rack; 16, transmission gear; 17, connecting rod; 18, boost rod; 19, boost cylinder; 20, main pulley; 21, auxiliary pulley; 22, support plate; 23. Connecting block; 24. Transmission cylinder; 25. Transmission rod; 26. Connecting seat; 27. Roller; 28. Eccentric disk; 29. ​​Return spring; 30. Pressing rod; 31. Switch button; 32. Connecting plate; 33. Air hood; 34. Filter; 35. Half gear; 36. Slide; 37. Second rack; 38. Mounting block; 39. Guide cylinder; 40. Guide rod; 41. Connecting pipe; 42. Control valve; 43. Support frame. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example

[0022] Reference Figure 1-Figure 10, an engineering surveying and mapping method based on a drone, comprising a body 1, a frame 2 is arranged on the body 1 at a circumferential interval, a propeller 3 is rotatably connected to the frame 2, and also comprises: a support frame 4, arranged at the bottom of the body 1, wherein a camera 5 is arranged in the support frame 4, a working box 6 is arranged on the top of the support frame 4, a rotating shaft 7 is rotatably connected to the working box 6, a cleaning mechanism is arranged on the rotating shaft 7, and a cleaning end of the cleaning mechanism is in contact with the surface of the camera 5; a support plate 22, fixedly connected in the working box 6, wherein the frame 2 is rotatably connected to the camera 5, and ... cleaning mechanism. A connecting plate 32 is connected, a suction mechanism is provided on the connecting plate 32, and the air inlet end of the suction mechanism faces the air outlet end of the propeller 3, the support plate 22 is provided with an intermittent spiral driving mechanism for driving the connecting plate 32 to rotate, and the air outlet end of the suction mechanism is arranged on the cleaning end of the cleaning mechanism; the liquid storage tank 11 is fixedly connected to the side wall of the working box 6, wherein a booster infusion mechanism is provided in the working box 6, the booster end of the booster infusion mechanism is connected to the liquid storage tank 11, and the liquid outlet end of the liquid storage tank 11 cooperates with the cleaning end of the cleaning mechanism.

[0023] The liquid storage tank 11 is provided with a sealing cover, which can seal the liquid storage tank 11 and can be rotated to be disassembled or installed, so as to fill the cleaning liquid into the liquid storage tank 11 for use.

[0024] The body 1 is usually made of lightweight materials (such as carbon fiber or plastic). An electric motor is arranged on the frame 2, which is responsible for driving the propeller 3 to rotate and provide lift and thrust. A battery is also arranged in the body 1 to provide power for the motor and other electronic equipment. Lithium polymer batteries are usually used. A flight controller is also arranged in the body 1, which is responsible for processing sensor data, stabilizing the flight attitude, and executing flight instructions. Sensors are also arranged, mainly including accelerometers, gyroscopes, barometers and Beidou positioning, etc., to help the body 1 sense the attitude and position. A remote control receiver is arranged on the ground to receive instructions from the remote control to control the flight of the body 1. A support frame 43 is fixedly connected to the bottom of the body 1, and the support frame 43 is symmetrically arranged in two groups to support the body 1 and keep it away from the ground. The support frame 4 is arranged between the two groups of support frames 43 to improve the protection of the camera 5 in the support frame 4.

[0025] It needs to be explained that the camera 5 is mainly a surveying head on the surveying instrument body, and its surveying head is mainly a high-resolution camera 5: it takes ultra-clear images for making orthophotos and three-dimensional models, and can also be an RGB camera or a multispectral camera, which can be integrated with the flight controller system in the body 1.

[0026] By rotating the cleaning mechanism on the surface of the camera 5 and making the cleaning end of the cleaning mechanism fit the surface of the camera 5 , impurities on the surface of the camera 5 can be cleaned, thereby improving the subsequent shooting clarity of the camera 5 .

[0027] Furthermore, the above-mentioned cleaning mechanism includes a cleaning scraper 8 fixedly connected to the rotating shaft 7, the tip of the cleaning scraper 8 is in contact with the surface of the camera 5, a screw rod 13 is rotatably connected in the working box 6, a movable block 14 is threadedly connected to the screw rod 13, a first rack 15 is fixedly connected to the movable block 14, and a transmission gear 16 is provided in the rotating shaft 7 extending to the working box 6, and the transmission gear 16 is meshed with the first rack 15.

[0028] When the screw rod 13 rotates, it drives the movable block 14 to move back and forth, and Figure 6 As shown in the figure, a fixed block is arranged in the working box 6, and the movable block 14 moves back and forth while moving in contact with the side wall of the fixed block, thereby driving the first rack 15 to move synchronously, so that the first rack 15 drives the transmission gear 16 to rotate synchronously, and the transmission gear 16 drives the rotating shaft 7 to rotate reciprocatingly, first rotating clockwise from the right side of the camera 5 to the left side, and rotating counterclockwise from the left side of the camera 5 to the right side, thereby achieving the effect of the cleaning scraper 8 cleaning the surface of the camera 5, and a motor 12 is arranged in the working box 6, and the screw rod 13 is fixedly connected to the output end of the motor 12, and the screw rod 13 can be driven to rotate by the motor 12.

[0029] In order to improve the cleaning effect of the cleaning scraper 8, a liquid spray plate 9 is fixedly connected to the cleaning scraper 8. A diversion cavity is opened in the liquid spray plate 9, and a spray hole is opened on the side of the liquid spray plate 9 facing the camera 5. The spray hole is connected to the liquid storage tank 11.

[0030] The liquid storage tank 11 is filled with cleaning liquid, such as glass water. The liquid in the liquid storage tank 11 can be transported to the diverter cavity in the liquid spray plate 9, and then transported to the liquid spray hole by the diverter cavity, so that the liquid spray hole sprays the cleaning liquid toward the surface of the camera 5 to improve the cleaning effect of the cleaning scraper 8.

[0031] Furthermore, in order to pressurize and spray the liquid in the liquid storage tank 11, the above-mentioned booster infusion mechanism includes a booster cylinder 19 fixedly connected to the working box 6, and a booster rod 18 is slidably connected to the booster cylinder 19. A piston is provided at one end of the booster rod 18, and the piston is in contact with the inner wall of the booster cylinder 19. The other end of the booster rod 18 is fixedly connected to the movable block 14 through a connecting rod 17. An air inlet pipe and an air outlet pipe are respectively provided on the booster cylinder 19, and a one-way valve is provided on the air inlet pipe and the air outlet pipe. The air outlet pipe is connected to the pipeline of the liquid storage tank 11 through a pipeline, and the liquid storage tank 11 is connected to the diversion chamber through a connecting pipe 41.

[0032] When the screw rod 13 rotates, the movable block 14 will move synchronously, thereby driving the connecting rod 17 to move synchronously, so that the connecting rod 17 drives the boost rod 18 to move. When the boost rod 18 drives the piston to move toward the inside of the boost cylinder 19, the air intake pipe stops taking in air, and the gas in the boost cylinder 19 is transported to the liquid storage tank 11 through the air outlet pipe, so as to pressurize the cavity of the liquid storage tank 11. The connecting pipe 41 is arranged at the top of the liquid storage tank 11, and the inlet end of the connecting pipe 41 is extended to the inner bottom of the liquid storage tank 11, so as to prevent the liquid storage tank from The liquid in 11 leaks. At the same time, when the air pressure in the liquid storage tank 11 increases, the cleaning liquid will enter the inlet end of the connecting pipe 41 and then be transported to the diverter cavity of the liquid spray plate 9, thereby pressurizing the cleaning liquid, so that the liquid spray plate 9 can spray out high-pressure cleaning liquid, and perform high-pressure washing on the impurities adhering to the surface of the camera 5. The surface of the surveying and mapping camera 5 can be automatically cleaned without the need for the drone to return, thereby improving the work efficiency of the drone surveying and mapping, reducing the impact of impurities on the surface of the camera 5, and improving the surveying and mapping accuracy of the camera 5.

[0033] In order to reduce the interference of water stains of the cleaning fluid on the surface of the camera 5, the above-mentioned suction mechanism includes a suction hood 33, which is fixedly connected to the connecting plate 32. A filter screen 34 is arranged on the suction hood 33. A jet plate 10 is fixedly connected to the cleaning scraper 8. The jet end of the jet plate 10 faces the surface of the camera 5. The suction hood 33 is connected to the jet plate 10 through a telescopic tube.

[0034] When the connecting plate 32 rotates, it can move from the bottom of the frame 2 to the air outlet range of the propeller 3. When the propeller 3 starts, lift will be generated. During this process, a downward airflow will be generated at the bottom. When the air suction hood 33 rotates to the range of the air flow, the air flow will enter the air suction hood 33, and the filter 34 will filter the impurities in the gas entering the air suction hood 33. At the same time, the gas will be transported to the jet plate 10 through the telescopic tube, and the jet end of the jet plate 10 will face the surface of the camera 5 to blow the cleaning liquid on the surface of the camera 5. During the blowing process, the friction between the cleaning liquid and the impurities on the lens surface will be increased, and the continuous spraying and blowing will improve the cleaning effect of the mirror surface.

[0035] Here, when the liquid spraying plate 9 is required to stop spraying the cleaning liquid, this effect can be achieved through the intermittent spiral driving mechanism.

[0036] In addition, a mounting block 38 is fixedly connected to the frame 2, a guide cylinder 39 is fixedly connected to the mounting block 38, a guide rod 40 is slidably connected to the guide cylinder 39, a slide groove 36 is provided at the bottom of the frame 2, a second rack 37 is slidably connected to the slide groove 36, a half gear 35 is fixedly connected to the connecting plate 32, and the half gear 35 is meshed with the second rack 37.

[0037] When the guide rod 40 on the guide cylinder 39 moves outward, it will drive the second rack 37 to move synchronously, so that the second rack 37 moves synchronously along the slide groove 36. At this time, the second rack 37 will drive the half gear 35 to rotate, and then the half gear 35 will drive the connecting plate 32 to rotate, thereby realizing the rotation of the suction hood 33.

[0038] Furthermore, the intermittent spiral drive mechanism includes an eccentric disk 28, and the eccentric disk 28 is cam-shaped. The eccentric disk 28 is rotatably connected to the side wall of the support plate 22. A connecting block 23 is fixedly connected to the support plate 22, and a transmission cylinder 24 is fixedly connected to the connecting block 23. A transmission rod 25 is slidably connected to the transmission cylinder 24. A piston is provided at one end of the transmission rod 25, and the piston is in contact with the inner wall of the transmission cylinder 24. The other end of the transmission rod 25 is fixedly connected to a connecting seat 26, and a roller 27 is rotatably connected to the connecting seat 26. The roller 27 abuts against the outer wall of the eccentric disk 28, and the transmission cylinder 24 is connected to the guide cylinder 39 through a telescopic tube. A reset spring 29 is sleeved on the transmission rod 25, and the two ends of the reset spring 29 respectively abut against the connecting seat 26 and the connecting block 23.

[0039] When the eccentric disk 28 rotates, the roller 27 drives the transmission rod 25 to slide in the transmission cylinder 24. Figure 8 and Fig. 9 When the highest end of the eccentric disk 28 abuts against the roller 27, the transmission rod 25 will drive the piston to squeeze the gas in the transmission cylinder 24, and the squeezed gas will be transported to the guide cylinder 39 through the telescopic pipe, and under the action of the return spring 29, the roller 27 will abut against the outside of the eccentric disk 28 in real time. At this time, the gas in the guide cylinder 39 will push the piston to move, and then push the guide rod 40 toward the outside of the transmission cylinder 24. A lowest end is also provided on the eccentric disk 28, and a slope is formed between the highest end and the lowest end. When the roller 27 abuts against the outside of the slope on the eccentric disk 28 in real time, the suction hood 33 on the guide rod 40 can always be within the range of the downward flowing gas under the propeller 3, so that the gas is transported to the suction hood 33.

[0040] In order to prevent the cleaning liquid in the liquid storage tank 11 from entering the diversion chamber in the liquid spray plate 9, a pressing rod 30 is fixedly connected to the connecting seat 26, and a switch button 31 is fixedly connected to the connecting block 23. The pressing end of the pressing rod 30 faces the switch button 31, and a control valve 42 is provided on the connecting pipe 41. The switch button 31 is electrically connected to the control valve 42. When the pressing end of the switch button 31 abuts against the pressing rod 30, the passage of the connecting pipe 41 is closed.

[0041] The switch button 31 is a push switch, which has two basic states: on (conduction) and off (disconnection). When not pressed, the switch is usually in the "off" state, and the circuit is not connected. When the button is pressed, the downward pressure of the button causes the internal contact points to contact each other, thereby forming a conductive state of the circuit, allowing current to pass through the switch, at which time the control valve 42 is activated and the passage of the connecting pipe 41 is closed.

[0042] And when the roller 27 is on the slope formed between the highest end and the lowest end of the eccentric disk 28, the control valve 42 will be activated, and the liquid storage tank 11 will be continuously pressurized at this time, thereby increasing the air pressure in the liquid storage tank 11. During this process, the jet plate 10 will cooperate with the cleaning scraper 8 to scrape the cleaning liquid on the surface of the camera 5. During the scraping process, the mirror surface of the camera 5 can be purged. On the one hand, it can prevent the cleaning liquid from remaining on the mirror surface, reduce the formation of water marks or stains, and help to quickly remove water droplets on the mirror surface to avoid the image quality being affected by the aggregation of water droplets. On the other hand, while scraping the cleaning liquid, blowing can help remove tiny particles and impurities on the mirror surface, improve the cleaning effect, and ensure the clarity of the lens.

[0043] When the roller 27 leaves the slope formed between the highest end and the lowest end of the eccentric disk 28, the roller 27 will be in the outer contour area of ​​the eccentric disk 28. During this process, the roller 27 will reset the transmission rod 25 on the transmission cylinder 24, and move the guide rod 40 toward the inside of the transmission cylinder 24, thereby resetting the suction hood 33 so that it is below the frame 2 to prevent airflow from entering the suction hood 33. During this process, the pressing rod 30 stops pressing the switch button 31, the switch of the control valve 42 is closed, and the passage of the connecting pipe 41 is opened. At this time, the pressure in the liquid storage tank 11 will be higher, which can improve the spray cleaning effect of the spray plate 9, so that the cleaning scraper 8 can cooperate with the spray plate 9 to wet the mirror surface of the camera 5.

[0044] In order to reduce the rotation speed of the eccentric disk 28 and increase the coordination time of the cleaning scraper 8 and the spray plate 9, a main pulley 20 is fixedly connected to the screw rod 13, a connecting shaft is rotatably connected to the support plate 22, an auxiliary pulley 21 is provided at one end of the connecting shaft, and the other end of the connecting shaft is fixedly connected to the eccentric disk 28, and the main pulley 20 is connected to the auxiliary pulley 21 through a belt.

[0045] When the auxiliary pulley 21 rotates one circle, the main pulley 20 rotates five circles. The transmission ratio is one to five. The ratio in the device is only for reference. The diameter of the pulley can be adjusted or changed according to actual needs.

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

Claims

1. An engineering surveying and mapping method based on an unmanned aerial vehicle, comprising a body (1), on which frames (2) are arranged at circumferential intervals, and on which propellers (3) are rotatably connected, It is characterized in that Also includes: A support frame (4) is arranged at the bottom of the machine body (1). Wherein, a camera (5) is arranged in the support frame (4), a working box (6) is arranged on the top of the support frame (4), a rotating shaft (7) is rotatably connected to the working box (6), a cleaning mechanism is arranged on the rotating shaft (7), and a cleaning end of the cleaning mechanism is in contact with the surface of the camera (5); A support plate (22) is fixedly connected inside the working box (6). The frame (2) is rotatably connected to a connecting plate (32), the connecting plate (32) is provided with an air suction mechanism, and the air inlet end of the air suction mechanism faces the air outlet end of the propeller (3), the support plate (22) is provided with an intermittent spiral drive mechanism for driving the connecting plate (32) to rotate, and the air outlet end of the air suction mechanism is arranged on the cleaning end of the cleaning mechanism; The liquid storage tank (11) is fixedly connected to the side wall of the working box (6). A pressurized infusion mechanism is provided in the working box (6), a pressurized end of the pressurized infusion mechanism is connected to a liquid storage tank (11), and a liquid outlet end of the liquid storage tank (11) cooperates with a cleaning end of the cleaning mechanism.

2. According to the engineering surveying and mapping method based on unmanned aerial vehicle (UAV) according to claim 1, It is characterized in that The cleaning mechanism comprises a cleaning scraper (8) fixedly connected to the rotating shaft (7), the tip of the cleaning scraper (8) being in contact with the surface of the camera (5), a screw rod (13) being rotatably connected inside the working box (6), a movable block (14) being threadedly connected to the screw rod (13), a first rack (15) being fixedly connected to the movable block (14), and a transmission gear (16) being provided inside the rotating shaft (7) extending into the working box (6), the transmission gear (16) being meshed with the first rack (15).

3. According to the engineering surveying and mapping method based on unmanned aerial vehicle according to claim 2, It is characterized in that A liquid spray plate (9) is fixedly connected to the cleaning scraper (8), a flow diversion cavity is provided in the liquid spray plate (9), and a spray hole is provided on a side of the liquid spray plate (9) facing the camera (5), and the spray hole is connected to the liquid storage tank (11).

4. The engineering surveying and mapping method based on unmanned aerial vehicle according to claim 3, It is characterized in that The boost infusion mechanism comprises a boost cylinder (19) fixedly connected to the working box (6), a boost rod (18) slidably connected to the boost cylinder (19), a piston being provided at one end of the boost rod (18), and the piston being in contact with the inner wall of the boost cylinder (19), the other end of the boost rod (18) being fixedly connected to the movable block (14) via a connecting rod (17), an air inlet pipe and an air outlet pipe being respectively provided on the boost cylinder (19), both the air inlet pipe and the air outlet pipe being provided with a one-way valve, and the air outlet pipe being connected to a pipeline of a liquid storage tank (11) via a pipeline, and the liquid storage tank (11) being connected to a diversion chamber via a connecting pipe (41).

5. The engineering surveying and mapping method based on unmanned aerial vehicle according to claim 2, It is characterized in that The air suction mechanism comprises an air suction hood (33), the air suction hood (33) being fixedly connected to the connecting plate (32), a filter screen (34) being arranged on the air suction hood (33), an air jet plate (10) being fixedly connected to the cleaning scraper (8), an air jet end of the air jet plate (10) facing the surface of the camera (5), and the air suction hood (33) being connected to the air jet plate (10) via a telescopic tube.

6. The engineering surveying and mapping method based on unmanned aerial vehicle according to claim 5, It is characterized in that The frame (2) is fixedly connected to a mounting block (38), the mounting block (38) is fixedly connected to a guide cylinder (39), the guide cylinder (39) is slidably connected to a guide rod (40), a slide groove (36) is provided at the bottom of the frame (2), a second rack (37) is slidably connected to the slide groove (36), a half gear (35) is fixedly connected to the connecting plate (32), and the half gear (35) is meshed with the second rack (37).

7. The engineering surveying and mapping method based on unmanned aerial vehicle according to claim 6, It is characterized in that The intermittent spiral drive mechanism comprises an eccentric disk (28), and the eccentric disk (28) is cam-shaped. The eccentric disk (28) is rotatably connected to the side wall of the support plate (22). A connecting block (23) is fixedly connected to the support plate (22). A transmission cylinder (24) is fixedly connected to the connecting block (23). A transmission rod (25) is slidably connected to the transmission cylinder (24). A piston is provided at one end of the transmission rod (25), and the piston is in contact with the inner wall of the transmission cylinder (24). The other end of the transmission rod (25) is fixedly connected to a connecting seat (26). A roller (27) is rotatably connected to the connecting seat (26), and the roller (27) abuts against the outer wall of the eccentric disk (28). The transmission cylinder (24) is connected to the guide cylinder (39) via a telescopic tube. A return spring (29) is sleeved on the transmission rod (25), and two ends of the return spring (29) respectively abut against the connecting seat (26) and the connecting block (23).

8. The engineering surveying and mapping method based on unmanned aerial vehicle according to claim 7, It is characterized in that A pressing rod (30) is fixedly connected to the connection seat (26), a switch button (31) is fixedly connected to the connection block (23), a pressing end of the pressing rod (30) faces the switch button (31), and a control valve (42) is provided on the connection pipe (41). The switch button (31) and the control valve (42) are electrically connected. When the pressing end of the switch button (31) abuts against the pressing rod (30), the passage of the connection pipe (41) is closed.

9. The engineering surveying and mapping method based on unmanned aerial vehicle according to claim 2, It is characterized in that A main pulley (20) is fixedly connected to the screw rod (13), a connecting shaft is rotatably connected to the support plate (22), an auxiliary pulley (21) is provided at one end of the connecting shaft, the other end of the connecting shaft is fixedly connected to the eccentric disk (28), and the main pulley (20) is connected to the auxiliary pulley (21) through a belt.

10. The engineering surveying and mapping method based on unmanned aerial vehicle according to claim 1, It is characterized in that A support frame (43) is fixedly connected to the bottom of the machine body (1), and two groups of support frames (43) are symmetrically arranged, and the support frame (4) is arranged between the two groups of support frames (43).

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