Unmanned aerial vehicle high-altitude gas sampler

Abstract

The invention discloses an unmanned aerial vehicle high-altitude gas sampler. The sampler comprises an unmanned aerial vehicle body and a sampling module, the sampling module is mounted at the bottom of the unmanned aerial vehicle body and comprises a sampling block, a plurality of cavities formed in the sampling block, a telescopic piece and a piston plate; the telescopic piece comprises a fixed end and a telescopic end, the fixed end is connected with the sampling block, and the telescopic end is connected with the piston plate; the upper part of the cavity is communicated with the external space of the sampling block, and the lower part of the cavity is provided with a valve module; the piston plate is in interference fit with the cavity and can move in the axial direction of the cavity; and the valve module is opened when the telescopic end of the telescopic piece moves, and is closed when the telescopic end of the telescopic piece stops moving. The valve module is opened when the telescopic end of the telescopic piece moves and is closed when the telescopic end of the telescopic piece stops moving, and air leakage in the sampling block can be effectively prevented.

Description

Technical Field

[0001] The invention belongs to the field of sampling equipment, and in particular relates to an unmanned aerial vehicle high-altitude gas sampler. Background Art

[0002] Air quality is judged based on the concentration of pollutants in the air, and its quality reflects the degree of air pollution. Atmospheric analysis is the main method for monitoring air quality. It mainly uses drones equipped with samplers to bring sampled air to the testing room, and the sampled air is precisely tested through testing equipment.

[0003] At present, the existing samplers still have certain shortcomings. During use, the drone can only sample the air at the same altitude during one flight, and cannot sample multiple layers at a time. At the same time, the residual air in the sampler during the sampling process will affect the detection results. Therefore, it is urgent to design a drone high-altitude gas sampler to solve the above problems. Summary of the invention

[0004] In order to overcome the defects of the above-mentioned prior art, the purpose of the present invention is to provide a high-altitude gas sampler for drones to solve the problem that drones cannot take multi-layer samples. To achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0005] A high-altitude gas sampler for an unmanned aerial vehicle, the sampler comprising: an unmanned aerial vehicle body and a sampling module;

[0006] The sampling module is installed at the bottom of the drone body, and includes a sampling block, a plurality of cavities provided in the sampling block, a telescopic member and a piston plate;

[0007] The telescopic member comprises a fixed end and a telescopic end, wherein the fixed end is connected to the sampling block, and the telescopic end is connected to the piston plate;

[0008] The cavity is connected to the external space of the sampling block at its upper part and is provided with a valve module at its lower part;

[0009] The piston plate is interference-fitted with the cavity and can move along the axial direction of the cavity;

[0010] The valve module is opened when the telescopic end of the telescopic member moves, and is closed when the telescopic end of the telescopic member stops moving.

[0011] Further, the valve module includes a sampling tube, an air inlet valve and an exhaust valve;

[0012] The sampling tube is provided with two air holes, and the air inlet valve and the air exhaust valve are respectively installed at the two air holes;

[0013] The air inlet valve remains closed when the telescopic end of the telescopic member is stationary and moves toward the valve module, and remains open when the telescopic end of the telescopic member moves away from the valve module;

[0014] The exhaust valve remains open when the telescopic end of the telescopic member moves toward the valve module, and remains closed when the telescopic end of the telescopic member is stationary and moves away from the valve module.

[0015] Furthermore, the air intake valve includes a rubber stopper located in the sampling cylinder and an air intake pipe arranged at the bottom of the sampling cylinder, the rubber stopper is used to block the air intake pipe, a movable rod is arranged at the bottom of the rubber stopper, and the movable rod passes through the sampling cylinder, a mounting frame is arranged on the outside of the sampling cylinder, and the movable rod passes through the mounting frame, a stopper is arranged at the end of the movable rod, and an elastic member 2 is sleeved on the outside of the movable rod, and the elastic member 2 is located between the stopper and the mounting frame.

[0016] Furthermore, a plunger is provided at the bottom of the piston plate and is gap-matched with the sampling cylinder.

[0017] Furthermore, an air guide channel is provided on the inner wall of the sampling tube, and two ends of the air guide channel are respectively located on the upper and lower sides of the rubber stopper.

[0018] Furthermore, the exhaust valve includes an exhaust pipe, a rubber block and an exhaust pipe, the two ends of the exhaust pipe are respectively connected to the sampling tube and the cylinder body, the rubber block is arranged in the cylinder body, the rubber block is used to block the exhaust pipe, the cylinder body is provided with an exhaust pipe at one end away from the exhaust pipe, a groove is opened in the rubber block, and an elastic member three is arranged in the groove, a limiting rod is also arranged in the cylinder body, the limiting rod is inserted in the groove, and the end face of the limiting rod is in contact with the elastic member three.

[0019] Furthermore, a plurality of side panels are fixedly mounted on the outer wall of the sampling block, and a plurality of movable columns that can move up and down are inserted into the side panels, a baffle is provided on the top of the movable column, and a support plate is provided on the bottom of the movable column, an elastic member 1 is sleeved on the outer side of the movable column, and the elastic member 1 is located between the side panel and the support plate.

[0020] Furthermore, a plurality of connecting rods are fixedly installed on the bottom of the drone body, and the connecting rods are fixedly connected to the sampling block.

[0021] Furthermore, the outer wall of the sampling block is connected with a circular ring through a supporting rod, and the outer wall of the circular ring is provided with a mesh cover which is connected to the outer side of the drone body.

[0022] Furthermore, the telescopic member is an electric telescopic rod, which is connected to a switch via a wire, and the switch is electrically connected to a controller.

[0023] Furthermore, a GPS locator is also provided in the sampling block, and the GPS locator is electrically connected to the controller.

[0024] Technical effects and advantages of the present invention:

[0025] The present invention provides an unmanned aerial vehicle high-altitude gas sampler, in which a plurality of groups of cavities are arranged in a sampling block, which is convenient for sampling air at different altitudes at one time, and before sampling, a piston plate can be driven to move by a telescopic member to absorb air, and a valve module is opened when the telescopic end of the telescopic member moves, and is closed when the telescopic end of the telescopic member stops moving, which can effectively prevent air leakage in the sampling block.

[0026] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic cross-sectional view of a high-altitude gas sampler for an unmanned aerial vehicle provided in an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of the enlarged structure of a sampling tube of a high-altitude gas sampler for a UAV provided by an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of the enlarged structure of a collection component of a high-altitude gas sampler for a drone provided by an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of the main structure of a sampling tube of a high-altitude gas sampler for an unmanned aerial vehicle provided in an embodiment of the present invention.

[0031] In the figure: 1-unmanned aerial vehicle body, 2-connecting rod, 3-sampling block, 4-telescopic member, 5-air vent, 6-cavity, 7-piston plate, 8-plug, 9-sampling cylinder, 10-elastic member 1, 11-support plate, 12-movable column, 13-side plate, 14-blocking sheet, 15-support rod, 16-ring, 17-net cover, 18-collecting assembly, 19-sampling assembly, 20-air guide channel, 21-rubber plug, 22-inlet pipe, 23-mounting frame, 24-movable rod, 25-elastic member 2, 26-block, 27-exhaust pipe, 28-cylinder, 29-exhaust pipe, 30-limiting rod, 31-rubber block, 32-elastic member 3. DETAILED DESCRIPTION

[0032] 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.

[0033] In addition, in the invention, the terms "first", "second" and other similar words are not intended to imply any order, quantity and importance, but are merely used to distinguish different elements, and the terms "upper", "lower", "left", "right" and other similar words are merely positional relationships in the drawings.

[0034] like Figure 1 and Figure 2 As shown, an unmanned aerial vehicle high-altitude gas sampler provided by an embodiment of the present invention comprises: an unmanned aerial vehicle body 1 and a sampling module;

[0035] The sampling module is installed at the bottom of the drone body 1, and includes a sampling block 3, a plurality of cavities 6 provided in the sampling block 3, a telescopic member 4 and a piston plate 7;

[0036] The telescopic member 4 comprises a fixed end and a telescopic end, wherein the fixed end is connected to the sampling block 3, and the telescopic end is connected to the piston plate 7;

[0037] The cavity 6 is connected to the external space of the sampling block 3 at its upper part, and a valve module is provided at its lower part;

[0038] The piston plate 7 is interference fit with the cavity 6 and can move along the axial direction of the cavity 6;

[0039] The valve module is opened when the telescopic end of the telescopic member 4 moves, and is closed when the telescopic end of the telescopic member 4 stops moving.

[0040] When the UAV rises to a height where air sampling is required, the piston plate 7 and the plug 8 can be driven to move by the telescopic member 4, so that the plug 8 is moved out of the sampling tube 9 and enters the cavity 6. At this time, the outside air can enter the cavity 6 through the valve module, and multiple groups of cavities 6 are provided in the sampling block 3, which is convenient for sampling air at different altitudes at one time. When the air collected in the cavity 6 needs to be collected, the piston plate 7 can be directly driven downward by the telescopic member 4, so that the air in the cavity 6 can be discharged through the valve module. It is very convenient to use. The sampler effectively realizes that the UAV can perform multiple sampling operations in a single flight, which is convenient for sampling air layers at different altitudes.

[0041] Specific:

[0042] like Figure 2 As shown, the valve module includes a sampling tube 9, an air intake valve 19 and an exhaust valve 18;

[0043] The sampling tube 9 is provided with two air holes, and the air inlet valve and the exhaust valve are respectively installed at the two air holes;

[0044] The air inlet valve 19 is kept closed when the telescopic end of the telescopic member 4 is stationary and moves toward the valve module, and is kept open when the telescopic end of the telescopic member 4 moves away from the valve module;

[0045] The exhaust valve 18 remains open when the telescopic end of the telescopic member 4 moves toward the valve module, and remains closed when the telescopic end of the telescopic member 4 is stationary and moves away from the valve module.

[0046] like Figure 2 As shown, in one embodiment of the present invention, the intake valve 18 includes a rubber plug 21 located in the sampling cylinder 9 and an intake pipe 22 arranged at the bottom of the sampling cylinder 9, the rubber plug 21 is used to block the intake pipe 22, a movable rod 24 is arranged at the bottom of the rubber plug 21, and the movable rod 24 passes through the sampling cylinder 9, a mounting frame 23 is arranged on the outside of the sampling cylinder 9, and the movable rod 24 passes through the mounting frame 23, a stopper 26 is arranged at the end of the movable rod 24, and an elastic member 25 is sleeved on the outside of the movable rod 24, and the elastic member 25 is located between the stopper 26 and the mounting frame 23.

[0047] When it is necessary to collect gas, the telescopic member 4 drives the piston plate 7 to move upward in the cavity 6. The generated suction force can drive the rubber plug 21 to move in the sampling tube 9, so that the elastic member 25 on the outside of the movable rod 24 is compressed, and the outside air enters the sampling tube 9 through the air inlet pipe 22, and then is introduced into the top of the rubber plug 21 along the air guide channel 20 and enters the cavity 6. When the piston plate 7 stops moving, the elastic member 25 can reset and drive the rubber plug 21 to move and re-block the air guide channel 20 and the air inlet pipe 22, so that the collected air will not leak out through the air inlet pipe 22 when sampling is stopped, and the outside air will no longer enter the sampling tube 9 through the air inlet pipe 22, which is very convenient to use.

[0048] Furthermore, a plunger 8 is provided at the bottom of the piston plate 7, which is gap-matched with the sampling cylinder 9. When exhausting, the plunger 8 can enter the sampling cylinder 9, thereby emptying the air in the sampling cylinder 9. The air can be exhausted before sampling to avoid the residual air from affecting the subsequent detection results, thereby achieving a better use effect.

[0049] like Figure 2As shown, an air guide channel 20 is provided on the inner wall of the sampling tube 9 , and two ends of the air guide channel 20 are respectively located at the upper and lower sides of the rubber stopper 21 , thereby preventing the rubber stopper 21 from completely blocking the sampling tube 9 .

[0050] like Figure 3 As shown, in one embodiment of the present invention, the exhaust valve 18 includes an exhaust pipe 27, a rubber block 31 and an air outlet pipe 29. The two ends of the exhaust pipe 27 are respectively connected to the sampling tube 9 and the cylinder body 28. The rubber block 31 is arranged in the cylinder body 28. The rubber block 31 is used to block the exhaust pipe 27. The cylinder body 28 is provided with an air outlet pipe 29 at one end away from the exhaust pipe 27. A groove is opened in the rubber block 31, and an elastic member 32 is arranged in the groove. A limiting rod 30 is also arranged in the cylinder body 28. The limiting rod 30 is inserted in the groove, and the end face of the limiting rod 30 is in contact with the elastic member 32.

[0051] When the gas needs to be exhausted, the piston plate 7 can be moved upward by the telescopic member 4, so that the air in the cavity 6 enters the exhaust pipe 27, which can push the rubber block 31 to move and compress the elastic member 32, so that the air enters the cylinder 28 and is then discharged along the outlet pipe 29. The collected air samples can be collected through the outlet pipe 29, which is very convenient to use.

[0052] like Figure 3 and Figure 4 As shown, in one embodiment of the present invention, a plurality of side panels 13 are fixedly mounted on the outer wall of the sampling block 3, and a plurality of movable columns 12 that can move up and down are inserted into the side panels 13, a baffle 14 is provided on the top of the movable column 12, and a support plate 11 is provided on the bottom of the movable column 12, an elastic member 10 is sleeved on the outer side of the movable column 12, and the elastic member 10 is located between the side panels 13 and the support plate 11.

[0053] When the drone body 1 lands, the support plate 11 contacts the ground first, and the elastic member 10 outside the movable column 12 is compressed, which can play a certain buffering role, making the drone body 1 more stable when landing and having a better use effect.

[0054] like Figure 1 As shown, in one embodiment of the present invention, a plurality of connecting rods 2 are fixedly installed at the bottom of the unmanned aerial vehicle body 1, and the connecting rods 2 are fixedly connected to the sampling block 3. The outer wall of the sampling block 3 is connected to a ring 16 through a support rod 15, and the outer wall of the ring 16 is provided with a net cover 17 that is connected to the outside of the unmanned aerial vehicle body 1. The net cover 17 can prevent debris from being drawn into the unmanned aerial vehicle body 1 and affecting the flight, and the use effect is better.

[0055] In one embodiment of the present invention, the telescopic member 4 is connected to a switch via a wire, and the switch is electrically connected to a controller. The specific structure of the controller is not limited. In this embodiment, preferably, the controller is a microprogram controller.

[0056] In one embodiment of the present invention, a GPS locator is also provided in the sampling block 3, and the GPS locator is electrically connected to the controller. The flying height of the unmanned aerial vehicle 1 can be determined by the GPS locator, so as to facilitate the determination of the air sampling height.

[0057] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-altitude gas sampler for unmanned aerial vehicles, characterized in that: The sampler comprises: an unmanned aerial vehicle (1) and a sampling module; The sampling module is installed at the bottom of the unmanned aerial vehicle (1), and comprises a sampling block (3), a plurality of cavities (6) arranged in the sampling block (3), a telescopic member (4) and a piston plate (7); The telescopic member (4) comprises a fixed end and a telescopic end, the fixed end is connected to the sampling block (3), and the telescopic end is connected to the piston plate (7); The cavity (6) is connected to the external space of the sampling block (3) at its upper side, and is provided with a valve module at its lower side; The piston plate (7) is interference-fitted with the cavity (6) and can move along the axial direction of the cavity (6); The valve module opens when the telescopic end of the telescopic member (4) moves, and closes when the telescopic end of the telescopic member (4) stops moving.

2. The high-altitude gas sampler for unmanned aerial vehicles according to claim 1, characterized in that: The valve module comprises a sampling cylinder (9), an air inlet valve (19) and an air outlet valve (18); The sampling tube (9) is provided with two air holes, and the air inlet valve (19) and the air outlet valve (18) are respectively installed at the two air holes; The air inlet valve (19) remains closed when the telescopic end of the telescopic member (4) is stationary and moves toward the valve module, and remains open when the telescopic end of the telescopic member (4) moves away from the valve module; The exhaust valve (18) remains open when the telescopic end of the telescopic member (4) moves toward the valve module, and remains closed when the telescopic end of the telescopic member (4) is stationary and moves away from the valve module.

3. The high-altitude gas sampler for unmanned aerial vehicles according to claim 2, characterized in that: The air intake valve (19) comprises a rubber stopper (21) located in the sampling tube (9) and an air intake pipe (22) arranged at the bottom of the sampling tube (9); the rubber stopper (21) is used to block the air intake pipe (22); a movable rod (24) is arranged at the bottom of the rubber stopper (21), and the movable rod (24) passes through the sampling tube (9); a mounting frame (23) is arranged on the outside of the sampling tube (9), and the movable rod (24) passes through the mounting frame (23); a stopper (26) is arranged at the end of the movable rod (24), and an elastic member 2 (25) is sleeved on the outside of the movable rod (24); the elastic member 2 (25) is located between the stopper (26) and the mounting frame (23).

4. The high-altitude gas sampler for unmanned aerial vehicles according to claim 3, characterized in that: A plunger (8) is provided at the bottom of the piston plate (7) and is clearance-matched with the sampling cylinder (9).

5. The high-altitude gas sampler for unmanned aerial vehicles according to claim 3, characterized in that: An air guide channel (20) is provided on the inner wall of the sampling tube (9), and two ends of the air guide channel (20) are respectively located on the upper and lower sides of the rubber stopper (21).

6. The UAV high-altitude gas sampler according to claim 2, characterized in that: The exhaust valve (18) comprises an exhaust pipe (27), a rubber block (31) and an exhaust pipe (29). The two ends of the exhaust pipe (27) are respectively connected to the sampling tube (9) and the cylinder body (28). The rubber block (31) is arranged in the cylinder body (28). The rubber block (31) is used to block the exhaust pipe (27). The cylinder body (28) is provided with an exhaust pipe (29) at one end away from the exhaust pipe (27). A groove is provided in the rubber block (31), and an elastic member three (32) is provided in the groove. A limiting rod (30) is also provided in the cylinder body (28). The limiting rod (30) is inserted in the groove, and the end face of the limiting rod (30) is in contact with the elastic member three (32).

7. The high-altitude gas sampler for unmanned aerial vehicles according to claim 1, characterized in that: A plurality of side plates (13) are fixedly mounted on the outer wall of the sampling block (3), and a plurality of movable columns (12) that can move up and down are inserted into the side plates (13), a baffle (14) is arranged on the top of the movable column (12), and a support plate (11) is arranged on the bottom of the movable column (12), and an elastic member (10) is sleeved on the outer side of the movable column (12), and the elastic member (10) is located between the side plates (13) and the support plate (11).

8. The high-altitude gas sampler for unmanned aerial vehicles according to claim 1, characterized in that: A plurality of connecting rods (2) are fixedly mounted on the bottom of the unmanned aerial vehicle body (1), and the connecting rods (2) are fixedly connected to the sampling block (3).

9. The high-altitude gas sampler for unmanned aerial vehicles according to claim 1, characterized in that: The outer wall of the sampling block (3) is connected to a circular ring (16) via a support rod (15), and the outer wall of the circular ring (16) is provided with a mesh cover (17) which is connected to the outside of the drone body (1).

10. The high-altitude gas sampler for unmanned aerial vehicles according to any one of claims 1 to 9, characterized in that: The telescopic member (4) is an electric telescopic rod, which is connected to a switch via a wire, and the switch is electrically connected to a controller.

11. The high-altitude gas sampler for unmanned aerial vehicles according to claim 10, characterized in that: The sampling block (3) is also provided with a GPS locator, and the GPS locator is electrically connected to the controller.

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