Multifunctional measuring device for land surveying and mapping

Abstract

The invention relates to the technical field of land surveying and mapping, and particularly discloses a multifunctional measuring device for land surveying and mapping, which comprises an unmanned aerial vehicle, the unmanned aerial vehicle comprises a fuselage and a rotor wing mounted on the fuselage, and also comprises a measuring main body and a measuring camera, and the measuring camera comprises a second shell, a lifting seat and a moving seat. A mounting cavity is formed in the second shell, and at least one camera is mounted in the mounting cavity; a containing groove is formed in the second shell, the lifting base is slidably installed on the upper side of the containing groove, and the moving base is fixedly connected with the lifting base; and a gap is formed between the movable seat and the second shell. According to the invention, the gas film is formed on the surface of the camera shell, the gas film is used for protecting the camera, raindrops on the surface of the second shell are blown away through gas in rainy days, the raindrops are prevented from being attached to the second shell, the shooting precision of the camera is improved, and the acquisition effect of land surveying and mapping data is further improved.

Description

Technical Field

[0001] The present invention specifically relates to the technical field of land surveying and mapping, and in particular to a multifunctional measuring device for land surveying and mapping. Background Art

[0002] With the widespread application of drone technology in the field of land surveying and mapping, surveying drones equipped with high-precision cameras have become an important tool for terrain data collection. However, when operating in rainy weather, the relevant technology still has significant defects: when the drone is flying at low altitude, the camera mirror is easily impacted by rain to form a water film. This optical interference will cause image distortion, blurred details and loss of feature points. Especially in heavy rain environments, traditional waterproof coatings will quickly fail under the scouring of high-speed airflow, and when the rainfall exceeds 20mm / h, conventional hydrophobic nano-coatings will still produce 2-3% light refraction deviation, seriously affecting the generation accuracy of three-dimensional point cloud data.

[0003] Existing solutions have multiple limitations: ① The mechanical wiper system will produce a resonance effect in the rotor turbulence field of the drone above 1500rpm. Actual measurements show that the wiper efficiency drops by 67% under a wind speed of level 6; ② Although the electric defogger can keep the mirror dry, the 35W heating module will shorten the flight time of the M300 drone by 23%; Therefore, it is urgent to develop drone mapping devices that can maintain optical acquisition quality under heavy rainfall conditions, which is of great significance to improving the environmental adaptability and data reliability of mapping equipment. Summary of the invention

[0004] The object of the present invention is to provide a multifunctional measuring device for land surveying and mapping to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A multifunctional measuring device for land surveying and mapping comprises an unmanned aerial vehicle, wherein the unmanned aerial vehicle comprises a fuselage and a rotor mounted on the fuselage, and further comprises a measuring body and a measuring camera, wherein the measuring camera is mounted at the bottom of the measuring body, and comprises a second shell, a lifting seat and a moving seat, wherein an installation cavity is provided inside the second shell, and at least one camera is installed inside the installation cavity; wherein the second shell is provided with a receiving groove, wherein the lifting seat is slidably mounted on the upper side of the receiving groove, wherein the moving seat is arranged on the lower side of the receiving groove, and wherein the moving seat is fixedly connected to the lifting seat; wherein a gap is formed between the moving seat and the second shell, wherein an exhaust hole is provided at the bottom of the lifting seat, wherein the exhaust hole is used to exhaust gas so that the gas flows along the gap, wherein the gas flows to the lowermost end of the gap and then moves upward along the arc surface of the second shell, thereby forming an air film on the surface of the second shell.

[0007] As a further solution of the present invention: the measuring body includes a top plate and a first shell, the top plate is fixedly installed on the top of the first shell, and the first shell is detachably connected to the fuselage of the drone; a water flow channel is opened inside the first shell, and a lifting plate is slidably installed inside the water flow channel, and a first rack and a second rack are also arranged inside the water flow channel, the first rack is fixedly connected to the lifting plate, the second rack is slidably connected to the water flow channel, and a connecting gear is arranged between the first rack and the second rack, and the two sides of the connecting gear are respectively meshed with the first rack and the second rack, and an extrusion rod is fixedly installed at the lower end of the second rack, and the extrusion rod is fixedly connected to the lifting seat.

[0008] As a further solution of the present invention: a drainage channel is provided on the side of the water flow channel of the first shell.

[0009] As a further solution of the present invention: the first rack and the second rack are both connected to an elastic reset rod, and the elastic reset rod is connected to the inner wall of the water flow channel.

[0010] As a further solution of the present invention: a mounting groove and an air flow channel are provided inside the first shell, an air pump is installed inside the mounting groove, an exhaust end of the air pump is connected to the air flow channel, and the air flow channel is connected to the exhaust hole at the bottom of the lifting seat through a hose.

[0011] As a further solution of the present invention: an air inlet and a plurality of first water inlets are provided on the top plate, the air inlet is communicated with the air inlet end of the air pump, and the first water inlet is communicated with the water flow channel.

[0012] As a further solution of the present invention: it also includes a detection mechanism, which includes a third shell, the third shell is fixedly connected to the top plate, a detection cavity is arranged inside the third shell, a water quality detection sensor is arranged inside the detection cavity, the detection cavity is sequentially provided with a fixed plate, a movable plate and a filter plate from top to bottom, the fixed plate is fixedly connected to the inner wall of the third shell, the movable plate is slidably connected to the inner wall of the third shell, a plurality of protrusions are arranged on the movable plate, a water discharge hole is provided on the movable plate between two adjacent protrusions, and a socket matching the protrusions is provided on the fixed plate.

[0013] As a further solution of the present invention: a first slide groove is provided on the inner wall of the third shell, a first slider is slidably installed inside the first slide groove, the first slider is made of iron material, and the first slider is fixedly connected to the movable plate, an electromagnet is also fixedly installed inside the first slide groove, and a first spring is provided between the first slider and the electromagnet; a buoyancy seat is provided on the upper part of the detection cavity, the buoyancy seat is slidably connected to the inner wall of the third shell, a second slide groove is provided on the inner wall of the third shell, a second slider is slidably installed inside the second slide groove, the second slider is fixedly connected to the buoyancy seat, an electromagnet controller is also provided inside the second slide groove, and the electromagnet controller is electrically connected to the electromagnet.

[0014] As a further solution of the present invention: a water pump is also installed at the bottom of the third shell, the water inlet end of the water pump is connected to the bottom of the detection chamber, the discharge end of the water pump is connected to a circulating water pipe, and a nozzle is installed on the upper part of the detection chamber, and the nozzle is connected to the circulating water pipe.

[0015] As a further solution of the present invention: a plurality of second water inlets are provided on the top plate, and the second water inlets are communicated with the third shell.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention forms an air film on the surface of the camera shell and utilizes the air film to protect the camera. In rainy weather, the raindrops on the surface of the second shell are blown away by the gas to prevent the raindrops from adhering to the second shell, thereby improving the shooting accuracy of the camera and further improving the acquisition effect of land surveying and mapping data; the present invention also improves the functionality of the soil surveying and mapping device by arranging a detection mechanism to collect and detect rainwater. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of a multifunctional measuring device for land surveying and mapping.

[0018] Figure 2 A side view of a multifunctional measuring device for land surveying.

[0019] Figure 3 It is a schematic diagram of the structure of the measuring body in the multifunctional measuring device for land surveying and mapping.

[0020] Figure 4 for Figure 3 A local enlarged schematic diagram of point A in the middle.

[0021] Figure 5 This is a schematic diagram of the structure of a measuring camera in a multifunctional measuring device for land surveying and mapping.

[0022] Figure 6 It is a schematic diagram of the structure of the detection mechanism in the multifunctional measuring device for land surveying and mapping.

[0023] Figure 7 for Figure 6 A local enlarged schematic diagram of point B in the middle.

[0024] In the figure: 10-UAV, 11-rotor, 12-fuselage, 20-measuring body, 21-top plate, 211-air inlet, 212-first water inlet, 213-second water inlet, 22-first shell, 221-water flow channel, 222-installation slot, 223-air pump, 224-air flow channel, 225-drainage channel, 226-first rack, 227-connecting gear, 228-second rack, 229-elastic reset rod, 30-measuring camera, 31-second shell, 32-extrusion Pressure rod, 33-lifting seat, 34-hose, 35-camera, 36-moving seat, 37-gap, 38-data processor, 40-detection mechanism, 41-third shell, 42-fixed plate, 43-moving plate, 431-protrusion, 432-water hole, 433-first slider, 434-electromagnet, 44-buoyancy seat, 441-button, 442-second slider, 443-wire, 45-nozzle, 46-filter plate, 47-water pump, 48-circulating water pipe, 49-water pipe. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-Figure 7 In an embodiment of the present invention, a multifunctional measuring device for land surveying and mapping includes a drone 10, a measuring body 20 and a measuring camera 30, wherein the drone 10 includes a fuselage 12 and a plurality of rotors 11 mounted on the fuselage 12; the measuring body 20 is mounted on the fuselage 12, and the measuring camera 30 is mounted at the bottom of the measuring body 20, and the measuring camera 30 includes a second shell 31, a lifting seat 33 and a moving seat 36, wherein the lower side of the second shell 31 is a hemispherical structure, and an installation cavity is provided inside the second shell 31, and at least one camera 35 is installed inside the installation cavity, and the camera 35 is connected to a data processor 38, wherein: the camera 35 is used to obtain land information of a target area, and the data processor 38 is used to process the soil information to obtain a land surveying and mapping result.

[0027] In order to improve the shooting accuracy of the camera 35 in rainy weather, a receiving groove is provided at the center of the second shell 31, the lifting seat 33 is slidably installed on the upper side of the receiving groove, the moving seat 36 is arranged on the lower side of the receiving groove, and the moving seat 36 is fixedly connected to the lifting seat 33; a gap 37 is formed between the moving seat 36 and the second shell 31, and an exhaust hole is provided at the bottom of the lifting seat 33, the exhaust hole is used to discharge gas, so that the gas flows along the gap 37, when the gas flows to the lower end of the gap 37, it moves upward along the arc surface of the second shell 31, so that the gas forms a layer of air film on the surface of the second shell 31, the air film is used to protect the camera 35, in rainy weather, the gas blows away the raindrops on the surface of the second shell 31 to prevent raindrops from adhering to the second shell 31, thereby improving the shooting accuracy of the camera 35.

[0028] In the embodiment of the present application, the measuring body 20 includes a top plate 21 and a first shell 22, the top plate 21 is fixedly mounted on the top of the first shell 22, and the first shell 22 is detachably connected to the fuselage 12 of the drone 10; a water flow channel 221 is provided inside the first shell 22, and a lifting plate is slidably mounted inside the water flow channel 221, and a first rack 226 and a second rack 228 are also provided inside the water flow channel 221, the first rack 226 is fixedly connected to the lifting plate, the second rack 228 is slidably connected to the water flow channel 221, and a connecting gear 227 is provided between the first rack 226 and the second rack 228, and the two sides of the connecting gear 227 are respectively connected to the first rack 226 and the second rack 228. The rack 226 and the second rack 228 are meshed, and a squeezing rod 32 is fixedly installed at the lower end of the second rack 228, and the squeezing rod 32 is fixedly connected to the lifting seat 33. In rainy weather, rainwater enters the water flow channel 221. After the amount of rainwater in the water flow channel 221 increases to a preset value, the first rack 226 moves downward under the action of the gravity of the rainwater, thereby driving the second rack 228 to move upward through the connecting gear 227, so that the second rack 228 controls the lifting seat 33 and the moving seat 36 connected to the lifting seat 33 to move upward through the squeezing rod 32, causing the gap 37 between the moving seat 36 and the second shell 31 to increase, thereby increasing the gas flow in the gap 37, thereby improving the ability of the gas to blow away raindrops.

[0029] In the embodiment of the present application, it should be noted that the first housing 22 is provided with a drainage channel 225 on the side of the water flow channel 221. The drainage channel 225 is used to drain rainwater. When the rainfall is small, the rainwater is directly discharged from the drainage channel 225, and the gap 37 maintains the initial state. In heavy rain weather, the amount of rainwater entering the water flow channel 221 increases sharply, and part of the rainwater is discharged from the drainage channel 225, and the remaining rainwater drives the lifting plate to move downward.

[0030] It should also be noted that the first rack 226 and the second rack 228 are both connected to an elastic reset rod 229, and the elastic reset rod 229 is connected to the inner wall of the water flow channel 221, and the elastic reset rod 229 is used to control the reset of the first rack 226 and the second rack 228.

[0031] In the embodiment of the present application, a mounting groove 222 and an air flow channel 224 are provided inside the first shell 22, an air pump 223 is installed inside the mounting groove 222, an exhaust end of the air pump 223 is connected to the air flow channel 224, the air flow channel 224 is connected to the exhaust hole at the bottom of the lifting seat 33 through a hose 34, the air pump 223 is used to generate gas, and the gas enters the gap 37 along the air flow channel 224 and the exhaust hole.

[0032] It should also be noted that in the embodiment of the present application, an air inlet 211 and a plurality of first water inlets 212 are provided on the top plate 21, the air inlet 211 is connected to the air inlet end of the air pump 223, the first water inlet 212 is used to collect rainwater, and the first water inlet 212 is connected to the water flow channel 221.

[0033] In the embodiment of the present application, a detection mechanism 40 is also included, and the detection mechanism 40 includes a third shell 41, and the third shell 41 is fixedly connected to the top plate 21. A detection cavity is arranged inside the third shell 41, and a water quality monitoring sensor is arranged inside the detection cavity. The detection cavity is provided with a fixed plate 42, a movable plate 43 and a filter plate 46 from top to bottom. The fixed plate 42 is fixedly connected to the inner wall of the third shell 41, and the movable plate 43 is slidably connected to the inner wall of the third shell 41. A plurality of protrusions 431 are arranged on the movable plate 43, and the movable plate 43 is located at A drainage hole 432 is provided between two adjacent protrusions 431, and a socket matching the protrusion 431 is provided on the fixed plate 42. In the initial state, the movable plate 43 is close to the fixed plate 42, and the protrusion 431 is inserted into the socket. The fixed plate 42 and the movable plate 43 prevent rainwater from flowing downward, thereby providing time for the water quality detection sensor to perform water quality detection on rainwater; after the detection is completed, when the rainwater needs to be discharged through the fixed plate 42 and the movable plate 43, at this time, the movable plate 43 moves away from the fixed plate 42, the protrusion 431 is separated from the socket, and the rainwater is discharged through the socket and the drainage hole 432;

[0034] Furthermore, in the embodiment of the present application, a first slide groove is provided on the inner wall of the third shell 41, and a first slider 433 is slidably installed inside the first slide groove, the first slider 433 is made of iron material, and the first slider 433 is fixedly connected to the movable plate 43, and an electromagnet 434 is also fixedly installed inside the first slide groove, and a first spring is provided between the first slider 433 and the electromagnet 434; a buoyancy seat 44 is provided on the upper part of the detection cavity, and the buoyancy seat 44 is slidably connected to the inner wall of the third shell 41, and a second slide groove is provided on the inner wall of the third shell 41 The second slide groove is provided with a second slider 442 which is slidably mounted inside the second slide groove. The second slider 442 is fixedly connected to the buoyancy seat 44. The second slide groove is also provided with an electromagnet controller 441 which is electrically connected to the electromagnet 434. When the amount of rainwater on the upper part of the detection chamber reaches a preset value, the buoyancy seat 44 rises, and the second slider 442 touches the electromagnet controller 441, so that the electromagnet controller 441 energizes the electromagnet 434, thereby attracting the first slider 433 and the movable plate 43 to slide, so that the movable plate 43 is separated from the fixed plate 42.

[0035] It should be noted that the electromagnet controller 441 includes an elastic button, a power supply and a delayed disconnect switch. The elastic button, power supply, delayed disconnect switch and electromagnet 434 are arranged in series. When the second slider 442 touches the electromagnet controller 441, the elastic button is stressed and closed, and the power supply energizes the electromagnet 434. After a period of time, the delayed disconnect switch is disconnected, the electromagnet 434 is powered off, and the movable plate 43 is reset.

[0036] Furthermore, in the embodiment of the present application, a water pump 47 is also installed at the bottom of the third housing 41, the water inlet end of the water pump 47 is connected to the bottom of the detection chamber, the water discharge end of the water pump 47 is connected to a circulating water pipe 48, a nozzle 45 is installed at the upper part of the detection chamber, the nozzle 45 is connected to the circulating water pipe 48, when the water flows downward through the movable plate 43 and the fixed plate 42, the water flows in contact with the filter plate 46, the filter plate 46 filters the water, and then the water pump 47 draws the filtered water into the nozzle 45 through the circulating water pipe 48, and the nozzle 45 is used to clean the upper part of the detection chamber, thereby improving the cleanliness of the detection chamber, preventing cross contamination of rainwater, and improving the detection accuracy of rainwater. In addition, the water discharge end of the water pump 47 is also connected to a downpipe 49, and a drain valve is provided on the downpipe 49. After cleaning, the drain valve can be opened to discharge the water.

[0037] It should also be noted that, in the embodiment of the present application, a plurality of second water inlets 213 are provided on the top plate 21 , and the second water inlets 213 are communicated with the third shell 41 .

[0038] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A multifunctional measuring device for land surveying and mapping, comprising an unmanned aerial vehicle (10), wherein the unmanned aerial vehicle (10) comprises a fuselage (12) and a rotor (11) mounted on the fuselage (12), characterized in that: The measuring device also comprises a measuring body (20) and a measuring camera (30), wherein the measuring camera (30) is mounted at the bottom of the measuring body (20), and the measuring camera (30) comprises a second shell (31), a lifting seat (33) and a moving seat (36), wherein a mounting cavity is provided inside the second shell (31), and at least one camera (35) is installed inside the mounting cavity; the second shell (31) is provided with a receiving groove, the lifting seat (33) is slidably mounted on the upper side of the receiving groove, the moving seat (36) is arranged on the lower side of the receiving groove, and the moving seat (36) is fixedly connected to the lifting seat (33); a gap (37) is formed between the moving seat (36) and the second shell (31), and an exhaust hole is provided at the bottom of the lifting seat (33), wherein the exhaust hole is used to exhaust gas, so that the gas flows along the gap (37), and after the gas flows to the lowermost end of the gap (37), it moves upward along the arc surface of the second shell (31), and forms an air film on the surface of the second shell (31).

2. The multifunctional measuring device for land surveying and mapping according to claim 1, characterized in that: The measuring body (20) comprises a top plate (21) and a first outer shell (22), wherein the top plate (21) is fixedly mounted on the top of the first outer shell (22), and the first outer shell (22) is detachably connected to the fuselage (12) of the unmanned aerial vehicle (10); a water flow channel (221) is provided inside the first outer shell (22), a lifting plate is slidably mounted inside the water flow channel (221), a first rack (226) and a second rack (228) are also provided inside the water flow channel (221), and the first The rack (226) is fixedly connected to the lifting plate, the second rack (228) is slidably connected to the water flow channel (221), and a connecting gear (227) is provided between the first rack (226) and the second rack (228), and the two sides of the connecting gear (227) are respectively meshed with the first rack (226) and the second rack (228), and an extrusion rod (32) is fixedly installed at the lower end of the second rack (228), and the extrusion rod (32) is fixedly connected to the lifting seat (33).

3. The multifunctional measuring device for land surveying and mapping according to claim 2, characterized in that: The first housing (22) is provided with a drainage channel (225) on the side of the water flow channel (221).

4. The multifunctional measuring device for land surveying and mapping according to claim 2, characterized in that: The first rack (226) and the second rack (228) are both connected to an elastic reset rod (229), and the elastic reset rod (229) is connected to the inner wall of the water flow channel (221).

5. The multifunctional measuring device for land surveying and mapping according to claim 2, characterized in that: The first shell (22) is provided with a mounting groove (222) and an air flow channel (224) inside. An air pump (223) is installed inside the mounting groove (222). The exhaust end of the air pump (223) is connected to the air flow channel (224). The air flow channel (224) is connected to the exhaust hole at the bottom of the lifting seat (33) through a hose (34).

6. The multifunctional measuring device for land surveying and mapping according to claim 5, characterized in that: An air inlet (211) and a plurality of first water inlets (212) are provided on the top plate (21); the air inlet (211) is connected to the air inlet end of the air pump (223); and the first water inlet (212) is connected to the water flow channel (221).

7. The multifunctional measuring device for land surveying and mapping according to claim 1, characterized in that: The invention also comprises a detection mechanism (40), wherein the detection mechanism (40) comprises a third shell (41), wherein the third shell (41) is fixedly connected to the top plate (21), wherein a detection cavity is arranged inside the third shell (41), wherein a water quality monitoring sensor is arranged inside the detection cavity, wherein a fixed plate (42), a movable plate (43) and a filter plate (46) are arranged in sequence from top to bottom in the detection cavity, wherein the fixed plate (42) is fixedly connected to the inner wall of the third shell (41), wherein the movable plate (43) is slidably connected to the inner wall of the third shell (41), wherein a plurality of protrusions (431) are arranged on the movable plate (43), wherein a water discharge hole (432) is provided on the movable plate (43) between two adjacent protrusions (431), and wherein a plug hole matching the protrusion (431) is provided on the fixed plate (42).

8. The multifunctional measuring device for land surveying and mapping according to claim 7, characterized in that: A first slide groove is provided on the inner wall of the third shell (41), and a first slider (433) is slidably installed inside the first slide groove. The first slider (433) is made of iron material and is fixedly connected to the movable plate (43). An electromagnet (434) is also fixedly installed inside the first slide groove, and a first spring is provided between the first slider (433) and the electromagnet (434); a buoyancy seat (44) is provided at the upper part of the detection cavity, and the buoyancy seat (44) is slidably connected to the inner wall of the third shell (41); a second slide groove is provided on the inner wall of the third shell (41), and a second slider (442) is slidably installed inside the second slide groove, and the second slider (442) is fixedly connected to the buoyancy seat (44); an electromagnet controller (441) is also provided inside the second slide groove, and the electromagnet controller (441) is electrically connected to the electromagnet (434).

9. The multifunctional measuring device for land surveying and mapping according to claim 8, characterized in that: A water pump (47) is also installed at the bottom of the third housing (41), the water inlet end of the water pump (47) is connected to the bottom of the detection chamber, and the discharge end of the water pump (47) is connected to a circulating water pipe (48). A nozzle (45) is installed at the top of the detection chamber, and the nozzle (45) is connected to the circulating water pipe (48).

10. The multifunctional measuring device for land surveying and mapping according to claim 9, characterized in that: A plurality of second water inlets (213) are provided on the top plate (21), and the second water inlets (213) are in communication with the third outer shell (41).

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