Barometer and drone

Abstract

The utility model relates to an unmanned plane technical field discloses a barograph and unmanned plane, this barograph includes: casing, circuit board and barometric measurement piece, casing is used to set up in the outer side of the casing of unmanned plane, casing is equipped with gas guide channel and curved air inlet channel, circuit board is located in the casing, circuit board will the inside of casing divide into air inlet chamber and measurement chamber, air inlet chamber and measurement chamber are located respectively in the both sides of circuit board, and the both ends of air inlet channel are connected with the outside of casing and air inlet chamber respectively, and the both ends of gas guide channel are connected with air inlet chamber and measurement chamber respectively, and barometric measurement piece is located on circuit board, and barometric measurement piece is located in measurement chamber. The barograph is arranged at the outside of the casing, reduces the influence of the temperature inside the casing on the barometric measurement. The barograph increases the flow resistance of the airflow through the curved flow channel and the cavity partition scheme of the casing, avoids the direct impact of the external airflow on the internal barometric measurement piece, weakens the dynamic pressure interference generated by the high-speed airflow, and improves the barometric detection precision.

Description

Technical Field

[0001] This application relates to the field of unmanned aerial vehicle (UAV) technology, and more particularly to a barometer and a UAV. Background Technology

[0002] As a core sensor for UAV altitude calculation, attitude control, and integrated navigation, the barometer monitors the relative altitude and flight status of the UAV by collecting ambient atmospheric static pressure. However, barometers are susceptible to heat generated by internal electronic components, which can affect the accuracy of barometric altitude measurement and even jeopardize the safety and stability of UAV flight control. Therefore, improving the measurement accuracy of UAV barometers is a pressing technical problem that needs to be solved. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art or related technologies.

[0004] The first aspect of this application provides a barometer, which includes: a housing, a circuit board, and a pressure measuring component. The housing is used to be installed on the outside of the casing of a UAV. The housing has an air guiding channel and a curved air intake channel. The circuit board is installed inside the housing and divides the interior of the housing into an air intake chamber and a measuring chamber. The air intake chamber and the measuring chamber are located on opposite sides of the circuit board. The two ends of the air intake channel are connected to the outside of the housing and the air intake chamber, respectively. The two ends of the air guiding channel are connected to the air intake chamber and the measuring chamber, respectively. The pressure measuring component is installed on the circuit board and is located inside the measuring chamber.

[0005] In some of the technical solutions provided in this application, the housing includes: a detachably connected upper cover and a lower cover, the upper cover and the top surface of the circuit board enclosing an air inlet cavity, and the lower cover and the bottom surface of the circuit board enclosing a measuring cavity.

[0006] In some of the technical solutions provided in this application, the inside of the housing is provided with a step, the step is provided with an air intake channel, the step is located in the air intake cavity, and the top surface of the circuit board is connected to the step.

[0007] In some of the technical solutions provided in this application, the side wall of the air intake chamber is provided with a groove extending along the height direction, and the groove forms an air guiding channel.

[0008] In some of the technical solutions provided in this application, multiple air channels are distributed at intervals around the outer periphery of the circuit board.

[0009] In some of the technical solutions provided in this application, there are multiple air intake channels, and the air intake ports of the multiple air intake channels are spaced apart circumferentially on the outer wall of the shell. The orientation of the air intake ports forms an angle with the forward and backward flight direction and the left and right flight direction of the UAV, respectively.

[0010] In some of the technical solutions provided in this application, the air outlets of multiple air intake channels are located on both sides of the air intake chamber.

[0011] In some of the technical solutions provided in this application, the extension path of the air intake channel forms at least two bends, and the bend angle of the air intake channel is greater than or equal to 90°.

[0012] In some of the technical solutions provided in this application, the outer wall of the housing is provided with a mounting component, and the bottom of the housing is provided with a mounting groove. The mounting groove is used for the mounting component to extend into and connect. The wall of the mounting groove is provided with an adhesive guide groove for accommodating adhesive.

[0013] The second aspect of the technical solution of this application proposes an unmanned aerial vehicle (UAV), which includes: a casing and any one of the aforementioned barometers, the barometers being located on the outside of the casing.

[0014] Compared with related technologies, this utility model has at least the following beneficial effects: The barometer is positioned externally on the casing to minimize the impact of internal casing temperature on pressure measurement. The barometer's curved flow channels and cavity partitioning design increase airflow resistance, preventing direct impact of external airflow on the internal pressure measuring element and reducing dynamic pressure interference from high-speed airflow. This external placement of the barometer reduces the influence of external airflow on pressure detection, allowing the pressure measuring element to collect static pressure close to that of the real environment, thus improving pressure measurement accuracy. Attached Figure Description

[0015] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of some embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 An exploded view of a barometer according to one embodiment of this application; Figure 2 A schematic diagram of the structure of the housing provided in one embodiment of this application; Figure 3 A cross-sectional view of a barometer according to one embodiment of this application; Figure 4 This application provides a partial structural schematic diagram of a barometer according to one embodiment. Figure 5 for Figure 4 A schematic diagram showing the structure after removing part of the circuit board; Figure 6 A front view of the top cover of one embodiment provided in this application; Figure 7 A cross-sectional view of the top cover of one embodiment provided in this application; Figure 8 A schematic diagram of the structure of the top cover according to one embodiment of this application; Figure 9 This is a schematic diagram of the bottom shell structure of one embodiment provided in this application.

[0016] in, Figures 1 to 9 The correspondence between the reference numerals and component names in the attached drawings is as follows: 10. Barometer; 100. Housing; 110. Top cover; 111. Marking; 120. Bottom shell; 121. Mounting groove; 122. Adhesive guide groove; 130. Air inlet channel; 131. Air inlet; 132. Air outlet; 140. Air guide channel; 150. Air inlet chamber; 160. Measuring chamber; 170. Step; 200. Circuit board; 300. Barometer measuring component. Detailed Implementation

[0017] To better understand the above technical solutions, the technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0018] The first aspect of this application provides a barometer 10, such as... Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 9 As shown, the barometer 10 includes: a housing 100, a circuit board 200, and a barometer 300. The housing 100 is used to be installed on the outside of the drone's casing. The housing 100 has an air guide channel 140 and a curved air intake channel 130. The circuit board 200 is located inside the housing 100. The circuit board 200 divides the interior of the housing 100 into an air intake chamber 150 and a measuring chamber 160. The air intake chamber 150 and the measuring chamber 160 are located on opposite sides of the circuit board 200. The two ends of the air intake channel 130 are connected to the outside of the housing 100 and the air intake chamber 150, respectively. The two ends of the air guide channel 140 are connected to the air intake chamber 150 and the measuring chamber 160, respectively. The barometer 300 is installed on the circuit board 200 and is located inside the measuring chamber 160.

[0019] In this embodiment, the barometer 10 can be a static barometer. The housing 100 is arranged on the outside of the UAV's casing, and the barometer 10 is in direct contact with the outside atmosphere, avoiding the influence of heat from the electronic components inside the casing on the barometer 10. A horizontally placed circuit board 200 divides the interior of the housing 100 into upper and lower cavities. The upper cavity of the circuit board 200 is the air intake cavity 150, and the lower cavity is the measuring cavity 160. The air intake cavity 150 and the measuring cavity 160 are connected through the air guide channel 140 of the housing 100, and the outside of the housing 100 and the air intake cavity 150 are connected through the air intake channel 130 of the housing 100, which extends in a curved manner. A pressure measuring element 300 is provided on the bottom surface of the circuit board 200, and the pressure measuring element 300 is located inside the measuring cavity 160. The pressure measuring element 300 can be a pressure sensor.

[0020] When airflow from outside the housing 100 enters the housing 100 through the curved air intake channel 130, the curved air intake channel 130 can prevent direct external airflow from rushing into the housing 100, thereby reducing the airflow velocity when the UAV is flying or hovering. After entering the air intake chamber 150, the airflow first impacts the top surface of the circuit board 200, further reducing the airflow velocity. Then, the airflow enters the measurement chamber 160 through the air guide channel 140, contacting the air pressure measuring element 300 inside the measurement chamber 160, where the air pressure measuring element 300 measures the airflow pressure.

[0021] The barometer 10 is positioned externally on the casing to reduce the impact of internal casing temperature on pressure measurement. The barometer 10 increases airflow resistance through the curved flow channel and cavity partitioning scheme of the casing 100, preventing external airflow from directly impacting the internal pressure measuring element 300 and weakening the dynamic pressure interference generated by high-speed airflow. This external placement of the barometer 10 reduces the influence of external airflow on pressure detection, enabling the pressure measuring element 300 to collect static pressure close to the real environment, thus improving pressure detection accuracy.

[0022] In some embodiments provided in this application, such as Figure 2 , Figure 3 and Figure 8 As shown, the housing 100 includes a detachably connected upper cover 110 and a bottom cover 120. The upper cover 110 and the top surface of the circuit board 200 enclose an air inlet cavity 150, and the bottom cover 120 and the bottom surface of the circuit board 200 enclose a measuring cavity 160.

[0023] In this embodiment, the housing 100 forms a detachable split structure through the upper cover 110 and the bottom cover 120, making the disassembly and assembly of the housing 100 more convenient and facilitating the assembly, maintenance, and replacement of the circuit board 200. The air intake channel 130 and the air guide channel 140 are located on the upper cover 110. The recessed structure of the upper cover 110 mates with the top surface of the circuit board 200 to form an air intake cavity 150. The recessed structure of the bottom cover 120 mates with the bottom surface of the circuit board 200 to form a measuring cavity 160. After the circuit board 200 is installed, the two side cavities naturally form inside the housing 100, reducing the processing difficulty of the housing 100 mold.

[0024] For example, the top cover 110 is provided with a mark 111 for pointing to the installation direction of the barometer 10. The mark 111 can be in the shape of an arrow and can be provided on the top surface of the top cover 110 by etching or printing.

[0025] In some embodiments provided in this application, such as Figure 5 As shown, the interior of the housing 100 is provided with a step 170, the step 170 is provided with an air intake channel 130, the step 170 is located in the air intake chamber 150, and the top surface of the circuit board 200 is connected to the step 170.

[0026] In this embodiment, the step 170 separates the top surface of the circuit board 200 from the inner surface of the cover 110, so that the gap formed at the top of the circuit board 200 naturally constitutes the air intake cavity 150. The air intake channel 130 is integrated on the step 170, which increases the layout range of the air intake channel 130, extends the path of the air intake channel 130, and enables the air intake channel 130 to have a better bending interception effect.

[0027] In some embodiments provided in this application, such as Figure 4 and Figure 5 As shown, the side wall of the air intake chamber 150 is provided with a groove extending along the height direction, and the groove forms an air guide channel 140.

[0028] In this embodiment, Figure 5 Part of the circuit board 200 is concealed to reveal the air intake cavity 150 above the circuit board 200. A groove is formed on the side wall of the air intake cavity 150 as an air guide channel 140, which connects the cavities on both sides of the circuit board 200. This simplifies the manufacturing process, reduces the manufacturing difficulty of the air guide channel 140, and avoids the need for additional conduits, thus simplifying the internal structure of the housing 100. The air guide channel 140 extends along the height direction, allowing the airflow to be vertically guided downwards along the side wall of the cavity into the measuring cavity 160, reducing the lateral space occupied by the air guide channel 140 and preventing interference between the air guide channel 140 and the internal structure of the housing 100.

[0029] In some embodiments provided in this application, such as Figure 4 and Figure 5As shown, multiple air channels 140 are spaced apart around the outer periphery of the circuit board 200.

[0030] In this embodiment, multiple air guide channels 140 allow airflow to simultaneously enter the measuring cavity 160 from multiple locations along the outer edge of the circuit board 200, increasing the airflow entry path and enabling the air pressure within the measuring cavity 160 to quickly equalize, reducing air pressure response lag. Furthermore, the circumferential air intake of the air guide channels 140 makes the air pressure distribution within the measuring cavity 160 more uniform, avoiding localized air pressure deviations and further improving the accuracy of air pressure measurement.

[0031] For example, the number of air channels 140 can be five, with two air channels 140 on the left and right sides of the circuit board 200 and one air channel 140 on the front side of the circuit board 200.

[0032] In some embodiments provided in this application, such as Figure 7 As shown, there are multiple air intake channels 130, and the air inlets 131 of the multiple air intake channels 130 are spaced apart circumferentially on the outer wall of the housing 100. The orientation of the air inlets 131 forms an angle with the forward and backward flight direction and the left and right flight direction of the UAV, respectively.

[0033] In this embodiment, multiple air inlets 131 are arranged circumferentially along the outer wall of the housing 100. The UAV has mutually perpendicular forward and backward flight directions and left and right flight directions based on its own structural features. For example, the front of the camera is the forward flight direction of the UAV, and the directions on both sides of the camera are the left and right flight directions of the UAV. Figure 7 The arrow at position X points to the forward / backward flight direction of the drone, and the arrow at position Y points to the left / right flight direction. Since the drone frequently flies forward / backward and left / right, the air inlet 131 of the air intake channel 130 is angled relative to these flight directions to avoid the high-frequency airflow direction of the drone. When the drone flies forward / backward or left / right, the angled air inlet 131 directs the airflow at an angle, preventing high-speed airflow from blowing directly into the air intake channel 130, reducing the impact of airflow directly entering the air intake channel 130, minimizing the influence of airflow on the barometer 10 during drone flight, and improving the stability and accuracy of pressure measurement.

[0034] For example, the number of air intake channels 130 can be four, and the orientation of the air intake 131 forms an angle of 45° or 60° with the forward and backward flight direction of the UAV, respectively.

[0035] In some embodiments provided in this application, such as Figure 7 As shown, the air outlets 132 of the multiple air intake channels 130 are located on both sides of the air intake chamber 150.

[0036] In this embodiment, the air outlets 132 are distributed on both sides of the air inlet chamber 150, so that the airflow can quickly enter the air inlet chamber 150, the internal air pressure of the air inlet chamber 150 is more uniform, the impact of unidirectional airflow is weakened, and the reliability of static pressure acquisition is improved.

[0037] In some embodiments provided in this application, such as Figure 7 As shown, the extension path of the intake passage 130 forms at least two bends, and the bend angle of the intake passage 130 is greater than or equal to 90°.

[0038] In this embodiment, the multiple bends significantly reduce the airflow velocity and dissipate the dynamic pressure, making the gas entering the intake chamber 150 closer to the ambient static pressure. It is understood that the larger the bend angle, the better the airflow obstruction effect. By specifying a bend angle exceeding 90°, the airflow undergoes a large-angle turn, forming an effective deflection and flow-blocking structure, resulting in better dynamic pressure energy dissipation and further improving the accuracy of air pressure measurement. Furthermore, the multiple bends in the intake channel 130 can prevent water droplets, sand, and other contaminants from directly entering the housing 100, improving the interception effect of external environmental impurities and balancing ventilation with wind resistance and waterproofing / dustproofing capabilities.

[0039] For example, the intake passage 130 includes a first passage and a second passage, wherein the first passage has two bends at 180°, and the second passage has bends at 180° and 90° respectively.

[0040] In some embodiments provided in this application, such as Figure 1 As shown, the outer wall of the housing is provided with mounting parts, and the bottom of the housing 100 is provided with a mounting groove 121. The mounting groove 121 is used for the mounting parts to extend into and connect. The wall surface of the mounting groove 121 is provided with an adhesive guide groove 122, which is used to accommodate adhesive.

[0041] In this embodiment, the bottom shell 120 is provided with a square mounting groove 121. The housing is provided with a mounting component that fits the mounting groove 121. The mounting component extends into the mounting groove 121 and connects with the housing 100, realizing quick positioning and assembly of the housing 100 and improving the convenience of installing the barometer 10. The wall of the mounting groove 121 is provided with an adhesive guide groove 122 extending along the height direction. The housing 100 and the mounting component are firmly assembled through the adhesive in the adhesive guide groove 122. The adhesive guide groove 122 increases the contact area between the housing 100 and the adhesive and prevents the adhesive from overflowing.

[0042] A second aspect of this application provides a drone, which includes a housing and any one of the above-mentioned barometers 10, the barometers 10 being located on the outside of the housing.

[0043] In this embodiment, the drone can be a multi-rotor drone. It should be noted that since the drone includes the barometer 10 provided in any of the above embodiments, it has all the beneficial technical effects of the barometer 10. To avoid repetition, it will not be described in detail here.

[0044] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] The above are merely some embodiments of this utility model and are not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A barometer, characterized in that, include: A housing for mounting on the outside of a drone's fuselage, the housing having an air duct and a curved air intake. A circuit board is disposed inside the housing. The circuit board divides the interior of the housing into an air intake chamber and a measuring chamber. The air intake chamber and the measuring chamber are located on opposite sides of the circuit board. The two ends of the air intake channel are connected to the outer side of the housing and the air intake chamber, respectively. The two ends of the air guide channel are connected to the air intake chamber and the measuring chamber, respectively. A pressure measuring device is mounted on the circuit board and is located inside the measuring cavity.

2. The barometer according to claim 1, characterized in that, The housing includes: The upper cover and the lower shell are detachably connected. The upper cover and the top surface of the circuit board enclose the air intake cavity, and the lower shell and the bottom surface of the circuit board enclose the measuring cavity.

3. The barometer according to claim 1, characterized in that, The housing has a step inside, the step has the air intake channel, the step is located in the air intake cavity, and the top surface of the circuit board is connected to the step.

4. The barometer according to claim 3, characterized in that, The air intake chamber has a groove extending along the height direction on its side wall, and the groove forms the air guide channel.

5. The barometer according to any one of claims 1 to 4, characterized in that, Multiple air channels are spaced apart around the outer periphery of the circuit board.

6. The barometer according to any one of claims 1 to 4, characterized in that, The number of air intake channels is multiple, and the air inlets of the multiple air intake channels are circumferentially spaced on the outer wall of the housing. The orientation of the air inlets forms an angle with the forward and backward flight direction and the left and right flight direction of the UAV, respectively.

7. The barometer according to claim 6, characterized in that, The air outlets of the multiple air intake channels are located on both sides of the air intake chamber.

8. The barometer according to any one of claims 1 to 4, characterized in that, The extension path of the air intake channel forms at least two bends, and the bend angle of the air intake channel is greater than or equal to 90°.

9. The barometer according to any one of claims 1 to 4, characterized in that, The outer wall of the housing is provided with a mounting component, and the bottom of the housing is provided with a mounting groove for the mounting component to extend into and connect. The wall of the mounting groove is provided with an adhesive guide groove for accommodating adhesive.

10. A drone, characterized in that, include: chassis; The barometer as described in any one of claims 1 to 9, wherein the barometer is located on the outside of the housing.

Images