阅读说明：本技术 一种空速计用气压采集结构及固定翼无人机 (Airspeed meter is with pneumatic collection structure and fixed wing unmanned aerial vehicle ) 是由 吴成能 于 2020-12-03 设计创作，主要内容包括：本发明提出了一种空速计用气压采集结构及固定翼无人机。该气压采集结构包括气压采集部,所述气压采集部包括动压管、动压出气管和水气分离件；所述动压管的端部开设有与外部空气连通的动压进气孔；所述水气分离件套设在所述动压管外周,且所述水气分离件分别连通所述动压出气管和所述动压管,所述水气分离件用于分离所述动压管中的空气和水。本发明的空速计用气压采集结构解决了现有的空速计不具备防水功能的问题。(The invention provides an air pressure collection structure for an airspeed meter and a fixed-wing unmanned aerial vehicle. The air pressure collecting structure comprises an air pressure collecting part, wherein the air pressure collecting part comprises a dynamic pressure pipe, a dynamic pressure air outlet pipe and a water-gas separating piece; the end part of the dynamic pressure pipe is provided with a dynamic pressure air inlet communicated with the outside air; the water-gas separating piece is sleeved on the periphery of the dynamic pressure pipe, is respectively communicated with the dynamic pressure air outlet pipe and the dynamic pressure pipe, and is used for separating air and water in the dynamic pressure pipe. The air pressure acquisition structure for the airspeed meter solves the problem that the existing airspeed meter does not have a waterproof function.)

1. The air pressure collecting structure for the airspeed meter is characterized by comprising an air pressure collecting part, wherein the air pressure collecting part comprises a dynamic pressure pipe, a dynamic pressure air outlet pipe and a water-gas separating piece; the end part of the dynamic pressure pipe is provided with a dynamic pressure air inlet communicated with the outside air; the water-gas separating piece is sleeved on the periphery of the dynamic pressure pipe, is respectively communicated with the dynamic pressure air outlet pipe and the dynamic pressure pipe, and is used for separating air and water in the dynamic pressure pipe.

2. The air pressure collecting structure for the airspeed meter according to claim 1, wherein the air pressure collecting part further comprises a static pressure pipe and a static pressure air outlet pipe, the periphery of the static pressure pipe is provided with a plurality of static pressure air inlet holes communicated with the outside air, the static pressure pipe is sleeved on the periphery of the dynamic pressure pipe, and the water-air separating piece is sleeved on the outside of the static pressure pipe; the static pressure air outlet pipe is communicated with the static pressure pipe.

3. The air pressure collecting structure for the airspeed meter according to claim 2, wherein the water-gas separating member comprises a housing, a separating cavity and a separating hole, and the housing is sleeved on the periphery of the static pressure pipe; the separation chamber is formed between the shell and the static pressure pipe; the separation hole penetrates through the static pressure pipe and the dynamic pressure pipe and is communicated with the dynamic pressure pipe and the separation cavity respectively; the dynamic pressure air outlet pipe is communicated with the separation cavity and is arranged at one side close to the separation hole.

4. The structure of claim 3, characterized in that, the structure of gathering air pressure for airspeed meter still includes the supporting part, the portion of gathering air pressure install in on the supporting part, the supporting part is seted up and is used for holding static pressure outlet duct and the through-hole of dynamic pressure outlet duct.

5. The structure of claim 4, characterized in that, the structure of gathering air pressure for airspeed meter still includes connecting portion, the portion of gathering air pressure passes through connecting portion install on the supporting part.

6. The air pressure collection structure for the airspeed meter of claim 5, wherein the connecting portion comprises a connecting plate and a connecting hole provided on the connecting plate; the connecting plate is arranged at one end of the air pressure collecting part; the supporting part is nearly atmospheric pressure collection portion one end be provided with connecting plate assorted holding hole, the supporting part periphery seted up with the preformed hole that the holding hole is linked together, the supporting part passes through the bolt the preformed hole with connecting hole on the connecting plate is connected.

7. A fixed wing drone, comprising a dynamic pressure sensor and an airspeed meter pneumatic collection structure as claimed in any one of claims 1 to 6, the dynamic pressure outlet duct being connected to the dynamic pressure sensor.

8. The fixed-wing unmanned aerial vehicle of claim 7, further comprising a static pressure sensor, wherein the air pressure collecting part further comprises a static pressure pipe and a static pressure air outlet pipe, the periphery of the static pressure pipe is provided with a plurality of static pressure air inlet holes communicated with outside air, the static pressure pipe is sleeved on the periphery of the dynamic pressure pipe, and the static pressure outer sleeve is sleeved with the water-air separating piece; the static pressure air outlet pipe is communicated with the static pressure pipe, and the static pressure air outlet pipe is communicated with the static pressure sensor.

Technical Field

The invention relates to the technical field of unmanned aerial vehicles, in particular to an air pressure acquisition structure for an airspeed meter and a fixed-wing unmanned aerial vehicle.

Background

Along with the development of unmanned aerial vehicles, the demand of an airspeed meter which is an important part on the unmanned aerial vehicle is also larger and larger. The control parameters of the unmanned aerial vehicle flight are set based on the measurement of the airspeed, so that the accurate airspeed measurement is directly related to the stability and safety of the unmanned aerial vehicle flight.

The airspeed meter accuracy ratio on the market is relatively poor, does not possess waterproof function simultaneously, if the airspeed tube intakes, then probably plug the airspeed meter sensor, perhaps the water droplet enters into and damages this airspeed meter sensor in the airspeed meter sensor, and then influences the function and the life-span of airspeed meter sensor, influences unmanned aerial vehicle flight safety.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: to the problem that current airspeed meter does not possess waterproof function, provide an airspeed meter and adopt structure with pneumatic pressure.

The invention provides an air pressure collecting structure for an airspeed meter, which comprises an air pressure collecting part, wherein the air pressure collecting part comprises a dynamic pressure pipe, a dynamic pressure air outlet pipe and a water-gas separating piece; the end part of the dynamic pressure pipe is provided with a dynamic pressure air inlet communicated with the outside air; the water-gas separating piece is sleeved on the periphery of the dynamic pressure pipe, is respectively communicated with the dynamic pressure air outlet pipe and the dynamic pressure pipe, and is used for separating air and water in the dynamic pressure pipe.

Optionally, the air pressure collecting part further comprises a static pressure pipe and a static pressure air outlet pipe, the periphery of the static pressure pipe is provided with a plurality of static pressure air inlet holes communicated with outside air, the static pressure pipe is sleeved on the periphery of the dynamic pressure pipe, and the outside of the static pressure pipe is sleeved with the water-air separating piece; the static pressure air outlet pipe is communicated with the static pressure pipe.

Optionally, the water-gas separating piece comprises a shell, a separating cavity and a separating hole, and the shell is sleeved on the periphery of the static pressure pipe; the separation chamber is formed between the shell and the static pressure pipe; the separation hole penetrates through the static pressure pipe and the dynamic pressure pipe and is communicated with the dynamic pressure pipe and the separation cavity respectively; the dynamic pressure air outlet pipe is communicated with the separation cavity and is arranged at one side close to the separation hole.

Optionally, the air pressure collecting structure for the airspeed meter further comprises a supporting part, the air pressure collecting part is installed on the supporting part, and the supporting part is provided with a through hole for accommodating the static pressure air outlet pipe and the dynamic pressure air outlet pipe.

Optionally, airspeed meter is with atmospheric pressure collection structure still includes connecting portion, atmospheric pressure collection portion pass through connecting portion install in on the supporting part.

Optionally, the connecting portion includes a connecting plate and a connecting hole disposed on the connecting plate; the connecting plate is arranged at one end of the air pressure collecting part; the supporting part is nearly atmospheric pressure collection portion one end be provided with connecting plate assorted holding hole, the supporting part periphery seted up with the preformed hole that the holding hole is linked together, the supporting part passes through the bolt the preformed hole with connecting hole on the connecting plate is connected.

On the other hand, the embodiment of the invention provides a fixed wing unmanned aerial vehicle which comprises a dynamic pressure sensor and an air pressure collecting structure for an airspeed meter, wherein a dynamic pressure air outlet pipe is communicated to the dynamic pressure sensor.

Optionally, the fixed-wing unmanned aerial vehicle further comprises a static pressure sensor, the air pressure collecting part further comprises a static pressure pipe and a static pressure air outlet pipe, the periphery of the static pressure pipe is provided with a plurality of static pressure air inlet holes communicated with outside air, the static pressure pipe is sleeved on the periphery of the dynamic pressure pipe, and the static pressure outside is sleeved with the water-air separating piece; the static pressure air outlet pipe is communicated with the static pressure pipe, and the static pressure air outlet pipe is communicated with the static pressure sensor.

In the invention, the water-air separating part is arranged between the dynamic pressure pipe and the dynamic pressure air outlet pipe, air and raindrops enter the dynamic pressure pipe from the dynamic pressure air inlet hole, when passing through the water-air separating part, water drops are stored in the water-air separating part, and air rises to enter the dynamic pressure air outlet pipe, so that water-air separation in the dynamic pressure pipe is realized, and the water drops are prevented from entering the dynamic pressure air outlet pipe.

Drawings

FIG. 1 is a schematic diagram of a pressure collection configuration for an airspeed meter provided by an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a pressure collection structure for an airspeed meter provided by an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a pressure collection structure for an airspeed meter according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a pressure acquisition portion of an airspeed meter pressure acquisition structure according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a support portion of a pneumatic pressure collection structure for an airspeed meter according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In order to explain the technical means of the present invention, the following description will be given by way of specific examples.

As shown in fig. 1 to 5, an airspeed meter air pressure collection structure according to an embodiment of the present invention includes an air pressure collection portion 10, where the air pressure collection portion 10 includes a dynamic pressure pipe 11, a dynamic pressure outlet pipe 12, and a water-gas separator 13. The end of the dynamic pressure tube 11 is provided with a dynamic pressure air inlet hole 111 communicated with the outside air. The water-gas separating piece 13 is sleeved on the periphery of the dynamic pressure pipe 11, the water-gas separating piece 13 is respectively communicated with the dynamic pressure air outlet pipe 12 and the dynamic pressure pipe 11, and the water-gas separating piece 13 is used for separating air and water in the dynamic pressure pipe 11.

In the air pressure collecting structure for the airspeed meter of this embodiment, the water-air separator 13 is arranged between the dynamic pressure tube 11 and the dynamic pressure air outlet tube 12, air and raindrops enter the dynamic pressure tube 11 from the dynamic pressure air inlet hole 111, when passing through the water-air separator 13, water drops are stored in the water-air separator 13, air rises to enter the dynamic pressure air outlet tube 12, water-air separation in the dynamic pressure tube 11 is realized, and water drops are prevented from entering the dynamic pressure air outlet tube 12.

As shown in fig. 2 to 4, in some embodiments of the present invention, the air pressure collecting portion 10 further includes a static pressure pipe 14 and a static pressure air outlet pipe 15, the static pressure pipe 14 is provided with a plurality of static pressure air inlets 141 communicated with the outside air at the periphery, the static pressure pipe 14 is sleeved on the periphery of the dynamic pressure pipe 11, and the water-air separating element 13 is sleeved on the outside of the static pressure pipe 14. The static pressure air outlet pipe 15 is communicated with the static pressure pipe 14.

As shown in fig. 2 and 3, in some embodiments of the present invention, the moisture separator 13 includes a housing 131, a separation chamber 132 and a separation hole 133, and the housing 131 is disposed around the static pressure pipe 14. The separation chamber 132 is formed between the housing 131 and the static tube 14. The separation hole 133 passes through the static pressure tube 14 and the dynamic pressure tube 11, and communicates with the dynamic pressure tube 11 and the separation cavity 132, respectively. The dynamic pressure outlet pipe 12 is communicated with the separation cavity 132 and is arranged at a side close to the separation hole 133, specifically, the dynamic pressure outlet pipe 12 is arranged at the upper part of the separation cavity 132 and above the separation hole 133, air and raindrops enter the dynamic pressure pipe 11 from the dynamic pressure inlet hole 111, when passing through the separation hole 133, water drops descend and are stored at the lower part of the separation cavity 132, and air rises to the upper part of the separation cavity 132 and enters the dynamic pressure outlet pipe 12.

Specifically, the separation holes 133 may be circular, square or triangular channels extending from the outer surface of the static pressure tube 14 to the dynamic pressure tube 11, and the separation holes 133 are not communicated with the static pressure tube 14.

Further, in some embodiments of the present invention, the outer surface of the housing 131 is provided with a mark for identifying the positions of the dynamic pressure outlet pipe 12 and the separation hole 133.

As shown in fig. 2, 3 and 5, in some embodiments of the present invention, the air pressure collecting structure for an airspeed meter further includes a supporting portion 20, the air pressure collecting portion 10 is mounted on the supporting portion 20, the supporting portion 20 is provided with a through hole 21 for accommodating the static pressure air outlet pipe 15 and the dynamic pressure air outlet pipe 12, the supporting portion 20 is mounted on an unmanned aerial vehicle, a sensor on the unmanned aerial vehicle can measure the air speed through the through hole 21, meanwhile, the static pressure air outlet pipe 15 and the dynamic pressure air outlet pipe 12 are accommodated in the through hole 21, and the static pressure air outlet pipe 15 and the dynamic pressure air outlet pipe 12 can be prevented from being bent by providing the supporting portion 20.

Further, the air pressure collecting part 10 is detachably connected with the supporting part 20, when water stored in the water-gas separating part 13 needs to be discharged, the air pressure collecting part 10 is detached from the supporting part 20, and the air pressure collecting part 10 is swung to discharge the water in the water-gas separating part 13 from the dynamic pressure air outlet pipe 12, so that subsequent use is facilitated.

As shown in fig. 4, in some embodiments of the present invention, the air pressure collecting structure for an airspeed meter further includes a connecting portion, and the air pressure collecting portion 10 is mounted on the supporting portion 20 through the connecting portion, so as to facilitate the mounting and dismounting of the air pressure collecting portion 10.

As shown in fig. 5, in some embodiments of the present invention, the connection part includes a connection plate 16 and a connection hole 161 provided on the connection plate 16. The connecting plate 16 is mounted at one end of the air pressure collecting part 10. One end of the supporting part 20 close to the air pressure collecting part 10 is provided with a containing hole 22 matched with the connecting plate 16, a preformed hole 23 communicated with the containing hole 22 is formed in the periphery of the supporting part 20, and the supporting part 20 penetrates through the preformed hole 23 through a bolt to be connected with a connecting hole 161 on the connecting plate 16.

In another alternative embodiment of the present invention, the air pressure collecting part 10 may be further mounted on the supporting part 20 by a snap fit.

On the other hand, an embodiment of the present invention further provides a fixed wing drone, which includes a dynamic pressure sensor and the air pressure collection structure for the airspeed meter, and the dynamic pressure air outlet pipe 12 is communicated to the dynamic pressure sensor.

In some embodiments of the present invention, the fixed-wing drone further includes a static pressure sensor, the air pressure collecting portion 10 further includes a static pressure pipe 14 and a static pressure air outlet pipe 15, the periphery of the static pressure pipe 14 is provided with a plurality of static pressure air inlet holes 141 communicated with the outside air, the static pressure pipe 14 is sleeved on the periphery of the dynamic pressure pipe 11, and the water-air separator 13 is sleeved outside the static pressure pipe 14. The static pressure air outlet pipe 15 is communicated with the static pressure pipe 14, and the static pressure air outlet pipe 15 is communicated with the static pressure sensor.

The advantageous effects of the present invention are further illustrated by the tests below.

Accuracy test

The air pressure collection structure for the airspeed meter is calibrated through a wind tunnel test, and the test result of the wind tunnel test is as follows:

experiments show that: after the wind speed is greater than 18m/s, the accuracy of the air pressure collection structure for the air speed meter is gradually increased, the error between the air pressure collection structure and the standard wind speed is less than 1%, the requirement of 20-35 m/s flight of the unmanned aerial vehicle is met, and the accuracy is high.

Water resistance test

Through unmanned aerial vehicle flying in the rainy day, carry out actual water-proof effects test, will follow the ordinary airspeed meter of purchasing on the market and install the airspeed meter dress of the atmospheric pressure collection structure of this embodiment on same fixed wing unmanned aerial vehicle, test both at the airspeed operating time before the anomaly, the test result as follows:

from the test results, it can be seen that the ordinary airspeed meter loses working capacity within 10min when flying in a rainy environment, and the airspeed meter of the embodiment has a continuous working time of 95-125 min. In a common airspeed meter, one drop of water enters a dynamic pressure tube, so that airspeed measurement is influenced, and the product fails. The airspeed meter provided with the air pressure collecting structure of the embodiment is provided with the water-gas separating piece, and the working time of the airspeed meter is 10-21 times of that of a common airspeed meter in the same rainy environment, so that the air pressure collecting structure for the airspeed meter is high in waterproof capacity, and the flying safety of the unmanned aerial vehicle is improved.

The above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some technical features may still be made. Such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.