Unmanned aerial vehicle for agricultural monitoring

Abstract

The invention relates to the technical field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle for agricultural monitoring. Comprising an unmanned aerial vehicle body, a base, a lifting ring, a sampling mechanism, winch equipment and multiple fixing assemblies. A camera is mounted on the unmanned aerial vehicle main body; a through hole is formed in the base; the multiple sets of fixing assemblies are all installed on the base. The sampling mechanism comprises a storage shell and a sampling tube; a power assembly used for driving the lifting ring to ascend and descend is installed on the base. The sampling pipe penetrates through the inner side of the lifting ring; a plurality of rotating rods are rotationally connected to the lifting ring, and the other ends of the rotating rods are rotationally connected with the inserting columns correspondingly; the winch equipment is installed on the unmanned aerial vehicle body and used for driving the power assembly to ascend and descend. Before the sampling pipe is inserted into the soil, the multiple insertion columns are obliquely inserted into the soil, so that the placement stability of the base can be improved, the base is prevented from being jacked up in the soil sampling process, and smooth soil sampling work is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles (UAVs), and in particular to an unmanned aerial vehicle (UAV) for agricultural monitoring. Background Art

[0002] Agricultural drones are mainly used to assist workers in their work during agricultural production. A variety of agricultural drones have been developed based on different actual usage needs. Among them, agricultural monitoring drones are mainly equipped with real-time monitoring cameras on the drone body, and the images captured and fed back are used for monitoring.

[0003] In order to monitor and analyze soil nutrients, it is necessary to install a sampling mechanism on the drone. However, since the sampling tube is thick and most drones are light, there may be a problem that the sampling tube cannot be smoothly inserted into the soil when sampling harder soil. Summary of the invention

[0004] The purpose of the present invention is to propose an agricultural monitoring drone in view of the problems existing in the background technology.

[0005] The technical solution of the present invention is a drone for agricultural monitoring, comprising:

[0006] A drone body, wherein a camera is installed on the drone body;

[0007] A base, wherein a through hole is formed on the base;

[0008] Multiple sets of fixing components, all of which are installed on the base, and the fixing components include guide tubes and plug posts, the guide tubes obliquely penetrate the upper and lower ends of the base, and the plug posts are slidably arranged on the inner side of the guide tubes;

[0009] The sampling mechanism is composed of two parts that are symmetrically arranged on the left and right. The sampling mechanism includes a storage shell and a sampling tube. The inner side of the storage shell has a storage channel.

[0010] A lifting ring, a power assembly for driving the lifting ring to rise and fall is installed on the base; a sampling tube passes through the inner side of the lifting ring, and a detachable connection structure is provided between the sampling tube and the lifting ring; a plurality of rotating rods are rotatably connected to the lifting ring, and the other ends of the plurality of rotating rods are rotatably connected to a plurality of plug posts respectively;

[0011] A winch device installed on the main body of the drone to drive the power component up and down.

[0012] Preferably, a rotating bracket is installed on the base, and a plastic film roll is rotatably installed on the rotating bracket; a mounting bracket is installed on the base, and an upper transmission roller and a lower transmission roller are rotatably installed on the mounting bracket; a mounting side plate is installed on the base, and a transmission shaft is rotatably installed on the mounting side plate, and a driving assembly for driving the transmission shaft to rotate in one direction is connected to the lifting ring, and a transmission assembly is connected between the transmission shaft and the rotating shaft of the upper transmission roller.

[0013] Preferably, the driving assembly includes a rack, a swivel, a ratchet, a gear ring, a pawl and a first spring, wherein the ratchet is mounted on a transmission shaft, the swivel is disposed on the outer periphery of the ratchet, a slide groove is opened on the swivel along its radial direction, one end of the pawl is slidably mounted in the slide groove, the first spring is mounted in the slide groove, the gear ring is disposed on the outer periphery of the swivel, and the rack is connected to the lifting ring.

[0014] Preferably, the transmission assembly includes a chain and two sprockets, the two sprockets are respectively mounted on the transmission shaft and the rotating shaft of the upper transmission roller, and the two sprockets are connected to each other through the chain.

[0015] Preferably, a sealing rubber roller is rotatably mounted on the mounting bracket, the sealing rubber roller contacts the upper transmission roller, a water storage box is arranged on the mounting bracket, a groove matching the upper part of the sealing rubber roller is arranged at the bottom end of the water storage box, and a water leakage hole is arranged between the groove and the inner cavity of the water storage box.

[0016] Preferably, the power assembly includes an electric telescopic rod, a connecting frame and a support, the support is connected to the upper end of the base, the electric telescopic rod is installed on the support, the connecting frame is connected to the output shaft of the electric telescopic rod, and the lifting ring is connected to the lower end of the connecting frame.

[0017] Preferably, the winch equipment includes a servo motor, two winding drums and two limit rings, wherein the servo motor is installed on the drone body, the two winding drums are installed on the motor shaft of the servo motor, one end of the two steel wire ropes are respectively fixedly wound on the winding drums on both sides, and the other ends of the two steel wire ropes are connected to the connecting frame.

[0018] Preferably, the storage channel is a spiral structure.

[0019] Compared with the prior art, the present invention has the following beneficial technical effects:

[0020] 1. Before the sampling tube is inserted into the soil, multiple plugs are inserted obliquely into the soil, thereby improving the stability of the base placement and preventing the base from being lifted up during the soil collection process, which is conducive to the smooth progress of the soil collection work.

[0021] 2. By setting up a spiral storage channel, multiple soils can be collected to facilitate continuous sampling by the drone, and the spiral channel design makes it difficult for the soil inside to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 and Figure 2 All of them are structural schematic diagrams of the present invention.

[0023] Figure 3 It is a schematic diagram of the structure of the sampling mechanism, power assembly and multiple fixing assemblies in the present invention.

[0024] Figure 4 It is a schematic structural diagram of the upper transmission roller, the lower transmission roller, the sealing rubber roller and the water storage box in the present invention.

[0025] Figure 5 It is a schematic diagram of the structure of the sampling mechanism in the present invention.

[0026] Figure 6 It is a cross-sectional structural diagram of the sampling mechanism in the present invention.

[0027] Figure 7 for Figure 2 Schematic diagram of the local enlarged structure at A.

[0028] Figure 8 for Figure 3 Schematic diagram of the local enlarged structure at point B.

[0029] Figure numerals: 1, drone body; 2, camera; 3, base; 301, through hole; 41, storage shell; 42, sampling tube; 4001, storage channel; 5, electric telescopic rod; 6, lifting ring; 7, guide tube; 8, plug column; 9, rotating rod; 10, plastic film roll; 11, rotating bracket; 12, limiting roller; 13, mounting bracket; 131, movable hole; 14, rack; 15, butterfly bolt; 16, connecting frame; 17, swivel; 18, ratchet Wheel; 19, toothed ring; 20, pawl; 21, first spring; 22, mounting side plate; 23, sprocket; 24, chain; 25, support; 261, upper transmission roller; 262, lower transmission roller; 263, sealing rubber roller; 27, water storage box; 271, groove; 272, water leakage hole; 28, connecting slider; 291, guide rod; 292, second spring; 30, servo motor; 31, take-up reel; 32, limit ring; 33, wire rope; 34, transmission shaft. DETAILED DESCRIPTION

[0030] Embodiment 1

[0031] like Figure 1-Figure 8 As shown, the present embodiment provides an agricultural monitoring drone, which includes a drone body 1, a base 3, a lifting ring 6, a sampling mechanism, a winch device, and a plurality of fixed components.

[0032] Specifically, the drone body 1 in the technical solution can be selected from but not limited to models such as DJI Agras T30, DJI AgrasMG-1P, XAG P100, senseFly eBee Ag, etc.; a camera 2 is installed on the drone body 1, and the camera 2 can be set to multiple to achieve all-round detection without blind spots.

[0033] A through hole 301 is provided on the base 3; a plurality of fixing components are installed on the base 3, and the fixing components include a guide tube 7 and a plug column 8. The guide tube 7 obliquely penetrates the upper and lower ends of the base 3, and the plug column 8 is slidably arranged on the inner side of the guide tube 7. It should be supplemented that a pointed head is provided at the bottom end of the plug column 8. This structural setting enables the plug column 8 to be easily inserted into the soil. When the plug column 8 is obliquely inserted into the soil, it is less likely to be pulled out than when it is inserted vertically, which is beneficial to improving the fixing effect of the base 3.

[0034] The sampling mechanism is composed of two parts that are symmetrically arranged on the left and right. The sampling mechanism includes a storage shell 41 and a sampling tube 42. The inner side of the storage shell 41 is provided with a storage channel 4001. The storage channel 4001 is a spiral structure. Such an arrangement enables multiple portions of soil collected to be stored in a centralized manner inside the storage shell, which has the function of preventing soil from falling. It should be added that the inner wall thickness of the bottom end of the sampling tube 42 is less than the thickness of its main body. Such a structural arrangement enables the bottom end of the sampling tube 42 to form an annular cutting structure, which is convenient for inserting into the soil and for cutting the membrane. The diameter of the cut membrane is larger than the diameter of the inner wall of the main body of the sampling tube 42, so that the excess part of the membrane can be adsorbed on the inner wall of the sampling tube 42 after being wetted, which is beneficial to improving the adsorption capacity of the membrane.

[0035] A power assembly for driving the lifting ring 6 to rise and fall is installed on the base 3, and the power assembly includes an electric telescopic rod 5, a connecting frame 16 and a support 25. The support 25 is connected to the upper end of the base 3, the electric telescopic rod 5 is installed on the support 25, the connecting frame 16 is connected to the output shaft of the electric telescopic rod 5, and the lifting ring 6 is connected to the lower end of the connecting frame 16; the sampling tube 42 passes through the inner side of the lifting ring 6, and a detachable connection structure is provided between the sampling tube 42 and the lifting ring 6; a plurality of rotating rods 9 are rotatably connected to the lifting ring 6, and the other ends of the plurality of rotating rods 9 are rotatably connected to a plurality of plug posts 8 respectively.

[0036] The winch equipment is installed on the drone body 1 to drive the power component to rise and fall. The winch equipment includes a servo motor 30, two winding drums 31 and two limit rings 32, wherein the servo motor 30 is installed on the drone body 1, and the two winding drums 31 are installed on the motor shaft of the servo motor 30. One ends of the two steel wire ropes 33 are respectively fixed and wound on the winding drums 31 on both sides, and the other ends of the two steel wire ropes 33 are connected to the connecting frame 16; it should be supplemented that in order to limit the steel wire ropes 33, a plurality of limit rings 32 are connected to the bottom end of the drone body 1, so that the plurality of steel wire ropes 33 pass through the corresponding limit rings 32 respectively; in the technical solution, the winch equipment can be set as two groups, and the synchronous driving of the connecting frame 16 is realized by four steel wire ropes 33, so as to further improve the stability of the drone hoisting.

[0037] A rotating bracket 11 is installed on the base 3, and a plastic film roll 10 is rotatably installed on the rotating bracket 11; a mounting bracket 13 is installed on the base 3, and an upper transmission roller 261 and a lower transmission roller 262 are rotatably installed on the mounting bracket 13, the upper transmission roller 261 is located above the lower transmission roller 262, and a limiting roller 12 is rotatably installed at the bottom end of the rotating bracket 11, and the gap between the limiting roller 12 and the base 3 is only enough to allow the film body to pass through, while the lower transmission roller 262 is flush with the upper end surface of the base 3. In summary, by setting the upper transmission roller 261, the lower transmission roller 262 and the limiting roller 12, the cut part of the film body is always parallel to the base 3.

[0038] A mounting side plate 22 is mounted on the base 3, a transmission shaft 34 is rotatably mounted on the mounting side plate 22, a driving assembly for driving the transmission shaft 34 to rotate unidirectionally is connected to the lifting ring 6, the driving assembly comprises a rack 14, a swivel 17, a ratchet 18, a toothed ring 19, a pawl 20 and a first spring 21, wherein the ratchet 18 is mounted on the transmission shaft 34, the swivel 17 is arranged on the outer periphery of the ratchet 18, it should be supplemented that a connecting shaft coaxially arranged therewith is fixedly connected to one side of the swivel 17, and the connecting shaft is rotatably mounted on the mounting side plate 22, so as to prevent the toothed ring 19 from being misaligned with the rack 14, a sliding groove is provided on the swivel 17 along its radial direction, one end of the pawl 20 is slidably mounted in the sliding groove, the first spring 21 is mounted in the sliding groove, and the toothed ring 19 is arranged on the outer periphery of the swivel 17, The rack 14 is connected to the lifting ring 6; when the lifting ring 6 moves downward, the rack 14 is driven to move, and the rack 14 drives the gear ring 19 to rotate, and the rotation of the gear ring 19 drives the rotating ring 17 to rotate. At this time, with the cooperation of the pawl 20, the driving work of the ratchet 18 and the transmission shaft 34 can be realized, and when the rack 14 moves upward, it drives the rotating ring 17 to rotate in the opposite direction, and the ratchet 18 does not rotate at this time; through the arrangement of the above structure, the transmission shaft 34 can only rotate in one direction, and a transmission assembly is connected between the transmission shaft 34 and the rotating shaft of the upper transmission roller 261, and the transmission assembly includes a chain 24 and two sprocket wheels 23, and the two sprocket wheels 23 are respectively installed on the transmission shaft 34 and the rotating shaft of the upper transmission roller 261, and the two sprocket wheels 23 are connected by the chain 24.

[0039] In order to increase the clamping force on the membrane body to facilitate transmission, movable holes 131 are installed at both ends of the mounting bracket 13, and a connecting slider 28 is slidably installed on the inner side of the movable hole 131. The two ends of the rotating shaft of the lower transmission roller 262 are respectively rotatably installed on the connecting sliders 28 on both sides, and a guide rod 291 is vertically arranged on the inner side of the movable hole 131, and the connecting slider 28 is slidably arranged on the guide rod 291. A second spring 292 is sleeved on the guide rod 291. The above-mentioned structure can improve the clamping force on the membrane body.

[0040] When sampling the soil, the drone body 1 flies to the designated area and then hovers, and the base 3 is driven downward to the ground by the winch device. Of course, the drone body 1 can also reduce its flight altitude to make the base 3 contact the ground; after the base 3 contacts the ground, the electric telescopic rod 5 is started to work. It should be added that a controller is installed on the drone body 1, and the controller can be a PLC control or a microprocessor controller. The controller controls the start of the electric telescopic rod 5 to drive the connecting frame 16 to move downward, that is, the lifting ring 6 is driven to move, and the lifting ring 6 moves. It also drives the sampling mechanism to move. At the same time, during the upward movement of the lifting ring 6, the bottom end of the plug post 8 can be obliquely inserted into the soil through the cooperation of the rotating rod 9, which can play the role of fixing the base 3, and continuously drive the lifting ring 6 to move until the sampling tube 42 is deeply inserted into the soil. In this technical solution, before driving the sampling tube 42 to move downward, multiple plug posts 8 are first inserted into the soil, so that the subsequent sampling tube 42 can smoothly carry out the soil sampling work; a zigzag storage channel 4001 is provided on the inner side of the storage shell 41, so that multiple samples of soil can be stored.

[0041] When the lifting ring 6 moves downward, the rack 14 is driven to move, and the rack 14 drives the gear ring 19 to rotate. The rotation of the gear ring 19 drives the swivel 17 to rotate. At this time, the ratchet 18 and the transmission shaft 34 can be driven with the cooperation of the pawl 20. When the rack 14 moves upward, the swivel 17 is driven to rotate in the opposite direction. At this time, the ratchet 18 does not rotate. During the rotation process, the transmission shaft 34 can drive the rotation of the upper transmission roller 261 through the cooperation of the transmission assembly. The upper transmission roller 261 and the lower transmission roller 262 clamp one end of the plastic film roll 10. When the upper transmission roller 261 rotates, it can pull the film body. When the bottom end of the sampling tube 42 is about to contact the film body, the rack 14 separates from the gear ring 19, and the traction work on the film body is interrupted. After the sampling tube 42 contacts the film body, the sampling tube 42 cuts off the film body, and the cut part of the film body is placed on the inner side of the sampling tube 42, thereby playing a role in separating different sampling batches of soil for the convenience of staff to distinguish.

[0042] Embodiment 2

[0043] like Figure 4As shown, the agricultural monitoring drone proposed in this embodiment is compared with the first embodiment. In this embodiment, a sealing rubber roller 263 is rotatably installed on the mounting bracket 13, and the sealing rubber roller 263 contacts the upper transmission roller 261. A water storage box 27 is arranged on the mounting bracket 13. The bottom end of the water storage box 27 is provided with a groove 271 that matches the upper part of the sealing rubber roller 263. A leaking hole 272 is arranged between the groove 271 and the inner cavity of the water storage box 27. When the upper transmission roller 261 is driven to rotate, the upper transmission roller 261 contacts the sealing rubber roller 263, which drives the rotation of the sealing rubber roller 263. During the rotation of the sealing rubber roller 263, the water inside the water storage box 27 is coated on its surface. During the rotation, the water on the sealing rubber roller 263 is coated on the surface of the upper transmission roller 261, and finally on the surface of the membrane. Through the arrangement of the above structure, after the surface of the membrane is coated with water, the membrane can be adhered to the inner wall of the sampling tube 42, thereby reducing soil falling.

[0044] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An agricultural monitoring drone, characterized in that: include: A drone body (1), wherein a camera (2) is mounted on the drone body (1); A base (3), wherein a through hole (301) is formed on the base (3); A plurality of fixing components, each of which is mounted on the base (3), the fixing components comprising a guide tube (7) and a plug column (8), the guide tube (7) obliquely passing through the upper and lower ends of the base (3), and the plug column (8) being slidably arranged on the inner side of the guide tube (7); The sampling mechanism is composed of two parts that are symmetrically arranged on the left and right. The sampling mechanism includes a storage shell (41) and a sampling tube (42). The inner side of the storage shell (41) is provided with a storage channel (4001); A lifting ring (6), wherein a power assembly for driving the lifting ring (6) to move up and down is installed on the base (3); a sampling tube (42) passes through the inner side of the lifting ring (6), and a detachable connection structure is provided between the sampling tube (42) and the lifting ring (6); A plurality of rotating rods (9) are rotatably connected to the lifting ring (6), and the other ends of the plurality of rotating rods (9) are rotatably connected to the plurality of plug posts (8) respectively; A winch device installed on the drone body (1) for driving the power assembly to rise and fall.

2. The agricultural monitoring drone according to claim 1, characterized in that: A rotating bracket (11) is mounted on the base (3), and a plastic film roll (10) is rotatably mounted on the rotating bracket (11); a mounting bracket (13) is mounted on the base (3), and an upper transmission roller (261) and a lower transmission roller (262) are rotatably mounted on the mounting bracket (13); a mounting side plate (22) is mounted on the base (3), and a transmission shaft (34) is rotatably mounted on the mounting side plate (22); a driving assembly for driving the transmission shaft (34) to rotate in one direction is connected to the lifting ring (6), and a transmission assembly is connected between the transmission shaft (34) and the rotating shaft of the upper transmission roller (261).

3. The agricultural monitoring drone according to claim 2, characterized in that: The driving assembly comprises a rack (14), a rotating ring (17), a ratchet (18), a toothed ring (19), a pawl (20) and a first spring (21), wherein the ratchet (18) is mounted on a transmission shaft (34), the rotating ring (17) is arranged on the outer periphery of the ratchet (18), a sliding groove is provided on the rotating ring (17) along its radial direction, one end of the pawl (20) is slidably mounted in the sliding groove, the first spring (21) is mounted in the sliding groove, the toothed ring (19) is arranged on the outer periphery of the rotating ring (17), and the rack (14) is connected to the lifting ring (6).

4. The agricultural monitoring drone according to claim 3, characterized in that: The transmission assembly comprises a chain (24) and two sprocket wheels (23). The two sprocket wheels (23) are respectively mounted on a transmission shaft (34) and a rotating shaft of an upper transmission roller (261). The two sprocket wheels (23) are connected in transmission via the chain (24).

5. The agricultural monitoring drone according to claim 4, characterized in that: A sealing rubber roller (263) is rotatably mounted on the mounting bracket (13), and the sealing rubber roller (263) contacts the upper transmission roller (261). A water storage box (27) is arranged on the mounting bracket (13), and a groove (271) matching with the upper part of the sealing rubber roller (263) is arranged at the bottom end of the water storage box (27), and a water leakage hole (272) is arranged between the groove (271) and the inner cavity of the water storage box (27).

6. The agricultural monitoring drone according to claim 1, characterized in that: The power assembly comprises an electric telescopic rod (5), a connecting frame (16) and a support (25), wherein the support (25) is connected to the upper end of the base (3), the electric telescopic rod (5) is mounted on the support (25), the connecting frame (16) is connected to the output shaft of the electric telescopic rod (5), and the lifting ring (6) is connected to the lower end of the connecting frame (16).

7. The agricultural monitoring drone according to claim 6, characterized in that: The hoisting device comprises a servo motor (30), two winding drums (31) and two limit rings (32), wherein the servo motor (30) is mounted on the drone body (1), the two winding drums (31) are both mounted on the motor shaft of the servo motor (30), one end of two steel wire ropes (33) are respectively fixedly wound on the winding drums (31) on both sides, and the other ends of the two steel wire ropes (33) are both connected to the connecting frame (16).

8. The agricultural monitoring drone according to claim 1, characterized in that: The storage channel (4001) is a spiral structure.

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