Unmanned aerial vehicle-mounted 2.5 billion-pixel oblique photography camera

Abstract

The utility model discloses an unmanned aerial vehicle-mounted oblique photography camera with 2.5 billion pixels, which belongs to the technical field of unmanned aerial vehicle-mounted aerial cameras, and comprises an unmanned aerial vehicle, an aerial camera assembly is arranged at the lower end of the unmanned aerial vehicle, and a pair of arc-shaped support frames are fixedly connected to the lower end of the aerial camera assembly. According to the scheme, the upper end of the heat dissipation protection shell is arranged to be the inclined surface, and the air inlet is formed in the matched inclined surface, so that air cooling heat dissipation can be performed on a plurality of cameras in the heat dissipation protection shell by using strong wind airflow blown downwards by a plurality of propellers when the unmanned aerial vehicle takes off; and heat dissipation holes in the upper end of a heat dissipation protection shell can be matched for internal air outlet when the unmanned aerial vehicle descends, and meanwhile, through mutual cooperation between a camera mounting plate and a rectangular heat dissipation ventilation pipeline, the heat dissipation holes in the upper end of the heat dissipation protection shell can be replaced for air outlet and heat dissipation due to the influence of airflow when the unmanned aerial vehicle ascends.

Description

Technical Field

[0001] The utility model relates to the technical field of drone-mounted aerial cameras, and more specifically to a drone-mounted 250-million-pixel tilt photography camera. Background Art

[0002] Large-scene real-life 3D models based on oblique images can provide users with richer geographic information and a more user-friendly experience, and are widely welcomed at home and abroad. However, the technology has developed slowly and has been difficult to promote, mainly due to the oblique photography aerial cameras used to obtain oblique images. At present, the oblique photography aerial cameras produced at home and abroad are mature in technology and stable in performance, but the price is generally in the millions and the weight is generally tens of kilograms. They must be carried by manned aircraft, which makes the acquisition of oblique images inefficient and costly, becoming a bottleneck restricting the promotion and application of large-scene 3D modeling technology. With the development of drone technology, its application field continues to expand, from traditional drone aerial photogrammetry to oblique photography to achieve 3D stereo modeling. At present, the lightest five-piece camera on the drone market is also more than 2KG. For drones, its weight, volume, and cost are relatively large, and the application difficulty increases; there are also three-piece cameras for cross-flight. Although the weight of the camera is reduced, the flight workload has doubled, increasing the time cost and operation risk of the operation. 250 million pixels are usually composed of 5 lenses. The direction of oblique photogrammetry photo acquisition includes photos directly below the flight direction, front and back, left and right at a 45° angle.

[0003] The Chinese patent authorization announcement number: CN105539870B provides a swing camera tilt photography device mounted on a drone. The solution is that two tilt cameras (or two tilt cameras plus one ortho camera) are symmetrically installed on the fixing holes of the outer frame through a connecting axis; there is a mounting frame on the crossbeam for installing a servo motor; the servo motor and the inner frame are connected by a transmission device, and the servo motor is controlled by a system controller to drive the transmission device to control the connection frame to swing multiple times, thereby driving the optical camera to rotate; when the camera rotates to the corresponding angle, the system controller controls the optical camera to expose simultaneously; at the same time, the GPS position information at the moment of exposure is obtained and automatically stored in the system controller, but when performing some real-life shooting that requires a specific angle, there is no need to perform swing shooting, and only the angle needs to be adjusted according to the aperture of multiple cameras.

[0004] Therefore, in order to solve the above problems, a 250-million-pixel oblique photography camera for drones is proposed. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a 250-million-pixel oblique photography camera for drones, which can realize air cooling and heat dissipation of multiple cameras stacked together through the strong airflow blown down by the drone propellers.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A 250-million-pixel oblique photography camera carried by an unmanned aerial vehicle comprises a unmanned aerial vehicle, wherein a flight-mounted camera assembly is provided at the lower end of the unmanned aerial vehicle, a pair of arc-shaped support frames are fixedly connected to the lower end of the flight-mounted camera assembly, the flight-mounted camera assembly comprises a camera mounting plate, a plurality of cameras are fixedly connected to the middle portion of the camera mounting plate, and heat dissipation ventilation holes are provided in the middle portion of the camera mounting plate and between every two adjacent cameras.

[0010] Furthermore, a plurality of rectangular heat dissipation ventilation ducts are fixedly connected to the lower end of the camera mounting plate, and the rectangular heat dissipation ventilation ducts are arranged in a one-to-one correspondence with the heat dissipation ventilation holes in the middle of the mounting plate, and a connecting hole connected to the heat dissipation ventilation holes is opened at the upper end of the rectangular heat dissipation ventilation duct.

[0011] Furthermore, a transparent camera lens protection cover is fixedly connected to the lower end of the camera mounting plate, and a plurality of rectangular grooves for matching rectangular heat dissipation and ventilation ducts passing through are formed at the upper end of the transparent camera lens protection cover.

[0012] Furthermore, the upper end of the camera mounting plate is fixedly connected to a heat dissipation protective shell, the upper end of the heat dissipation protective shell is arranged as an inclined surface, and a plurality of air inlet holes are opened on the inclined surface of the upper end of the heat dissipation protective shell, and a plurality of heat dissipation holes are also opened on the upper end of the heat dissipation protective shell.

[0013] Furthermore, an annular bolt mounting ring is provided at the upper end of the heat dissipation protective shell, and the annular bolt mounting ring is fixedly connected to the upper end of the heat dissipation protective shell through a plurality of fixed mounting rods, and a plurality of threaded holes are opened in the middle of the annular bolt mounting ring for easy installation on a drone.

[0014] Furthermore, a plurality of circular mounting holes for mounting cameras are provided in the middle of the camera mounting plate.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] In this solution, by setting the upper end of the heat dissipation protection shell as an inclined surface and opening an air inlet on the inclined surface, the strong airflow blown down by multiple propellers when the drone takes off can be used to cool the multiple cameras inside the heat dissipation protection shell. The heat dissipation holes on the upper end of the heat dissipation protection shell can be used for internal air outlet when the drone descends. At the same time, through the mutual cooperation between the camera mounting plate and the rectangular heat dissipation ventilation duct, when the drone rises, it can be affected by the airflow to replace the heat dissipation holes on the upper end of the heat dissipation protection shell for air outlet and heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the aerial camera assembly of the utility model;

[0020] Figure 3 This is a bottom view structural diagram of the aerial camera assembly of the utility model;

[0021] Figure 4 It is a schematic diagram of the overall split structure of the utility model;

[0022] Figure 5 It is a schematic diagram of the connection structure between the camera mounting plate and the heat dissipation protection shell of the utility model;

[0023] Figure 6 It is a schematic diagram of the cross-sectional structure of the heat dissipation protection shell of the present utility model.

[0024] Description of the numbers in the figure:

[0025] 1. UAV; 2. Aerial camera assembly; 3. Arc-shaped support frame; 201. Camera mounting plate; 202. Heat dissipation protective shell; 203. Transparent camera lens protective cover; 204. Camera; 205. Rectangular heat dissipation ventilation duct; 206. Ring bolt mounting ring; 207. Fixed mounting rod. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Example:

[0030] See also Figure 1-6 A 250 million pixel oblique photography camera carried by a drone, comprising a drone 1, a drone 1 having a camera assembly 2 at the lower end thereof, a pair of arc-shaped support frames 3 being fixedly connected to the lower end of the camera assembly 2, the camera assembly 2 comprising a camera mounting plate 201, a plurality of cameras 204 being fixedly connected to the middle of the camera mounting plate 201, a heat dissipation ventilating hole being provided in the middle of the camera mounting plate 201 and between every two adjacent cameras 204;

[0031] In this solution, the arc-shaped support frame 3 is arranged at the lower end of the drone 1, so as to protect the lower end aerial camera assembly 2 when the drone is landed or stored.

[0032] See also Figure 1-6 The lower end of the camera mounting plate 201 is fixedly connected with a plurality of rectangular heat dissipation ventilation ducts 205, and the rectangular heat dissipation ventilation ducts 205 are arranged in a one-to-one correspondence with the heat dissipation ventilation holes in the middle of the mounting plate 201. The upper end of the rectangular heat dissipation ventilation ducts 205 is provided with a connecting hole connected to the heat dissipation ventilation holes. The lower end of the camera mounting plate 201 is fixedly connected with a transparent camera lens protective cover 203, and the upper end of the transparent camera lens protective cover 203 is provided with a plurality of rectangular grooves that cooperate with the rectangular heat dissipation ventilation ducts 205 to penetrate;

[0033] The upper end of the camera mounting plate 201 is fixedly connected with a heat dissipation protective shell 202, the upper end of the heat dissipation protective shell 202 is set as an inclined surface, and a plurality of air inlet holes are opened on the upper inclined surface of the heat dissipation protective shell 202, and a plurality of heat dissipation holes are also opened on the upper end of the heat dissipation protective shell 202, and an annular bolt mounting ring 206 is provided on the upper end of the heat dissipation protective shell 202, and the annular bolt mounting ring 206 is fixedly connected to the upper end of the heat dissipation protective shell 202 through a plurality of fixed mounting rods 207, and a plurality of threaded holes are opened in the middle of the annular bolt mounting ring 206 for easy installation with a drone;

[0034] This solution uses the rotation of the propeller to generate a strong airflow when the drone 1 takes off. Through the setting of the upper inclined surface of the heat dissipation protective shell 202, and the setting of multiple air inlet holes on the inclined surface, the airflow generated by the downward rotation of the propeller is poured into the interior of the heat dissipation protective shell 202 through the holes on the inclined surface, so as to dissipate the heat of the camera inside, and prevent various problems caused by overheating of the camera. At the same time, the internal airflow is discharged through the heat dissipation holes on the upper end of the heat dissipation protective shell 202. If the drone is rising, because the heat dissipation holes are at the upper end of the entire aerial camera assembly 2, the rising of the drone will collide with the airflow, which will cause the airflow inside the heat dissipation protective shell 202 to be unable to be discharged. At this time, under the effect of the rising gravity, the airflow inside the heat dissipation protective shell 202 will flow downward, and a heat dissipation vent is opened in the middle of the camera mounting plate 201 to discharge the airflow into the interior of the rectangular heat dissipation ventilation duct 205, and then discharged to the outside through the rectangular heat dissipation ventilation duct 205, so as to achieve heat dissipation of the camera 204 in various scenarios;

[0035] The annular bolt mounting ring 206 can be mounted on the lower end of the drone through a plurality of bolt holes provided in the middle thereof.

[0036] See also Figure 1-6 , a plurality of circular mounting holes for mounting the camera 204 are provided in the middle of the camera mounting plate 201;

[0037] The camera mounting plate 201 of the present invention has a corresponding inclined mounting hole in the middle according to the tilt angle of the camera, which can improve the stability of the camera after installation and prevent accidental deviation.

[0038] Working principle: When the drone 1 takes off, a strong airflow is generated by the rotation of the propeller. Through the setting of the upper inclined surface of the heat dissipation protective shell 202, and the setting of multiple air inlet holes on the inclined surface, the airflow generated by the downward rotation of the propeller is poured into the interior of the heat dissipation protective shell 202 through the holes on the inclined surface, so as to dissipate the heat of the camera inside it and prevent various problems caused by overheating of the camera. At the same time, the internal airflow is discharged through the heat dissipation holes on the upper end of the heat dissipation protective shell 202. If the drone is rising, because the heat dissipation holes are at the upper end of the entire aerial camera assembly 2, the rising of the drone will collide with the airflow, which will cause the airflow inside the heat dissipation protective shell 202 to be unable to be discharged. At this time, under the action of the rising gravity, the airflow inside the heat dissipation protective shell 202 will flow downward, and a heat dissipation vent is opened in the middle of the camera mounting plate 201 to discharge the airflow into the interior of the rectangular heat dissipation ventilation duct 205, and then discharged to the outside through the rectangular heat dissipation ventilation duct 205, so as to achieve heat dissipation of the camera 204 in various scenarios. The ring bolt mounting ring 206 can be installed at the lower end of the drone through multiple bolt holes opened in the middle of the ring bolt mounting ring 206.

[0039] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A drone-mounted 250-megapixel oblique photography camera, comprising a drone (1), characterized in that: The lower end of the drone (1) is provided with an aerial camera assembly (2), and the lower end of the aerial camera assembly (2) is also fixedly connected to a pair of arc-shaped support frames (3); The aerial camera assembly (2) comprises a camera mounting plate (201), a plurality of cameras (204) are fixedly connected to the middle of the camera mounting plate (201), and heat dissipation ventilation holes are provided in the middle of the camera mounting plate (201) and between every two adjacent cameras (204).

2. The 250-megapixel oblique photography camera carried by an unmanned aerial vehicle according to claim 1, characterized in that: A plurality of rectangular heat dissipation and ventilation ducts (205) are fixedly connected to the lower end of the camera mounting plate (201); the rectangular heat dissipation and ventilation ducts (205) are arranged in a one-to-one correspondence with the heat dissipation and ventilation holes in the middle of the mounting plate (201); and a connecting hole connected to the heat dissipation and ventilation holes is provided at the upper end of the rectangular heat dissipation and ventilation ducts (205).

3. The 250-megapixel oblique photography camera carried by an unmanned aerial vehicle according to claim 2, characterized in that: A transparent camera lens protection cover (203) is fixedly connected to the lower end of the camera mounting plate (201), and a plurality of rectangular grooves for matching rectangular heat dissipation and ventilation ducts (205) passing through are formed at the upper end of the transparent camera lens protection cover (203).

4. The 250-megapixel oblique photography camera carried by an unmanned aerial vehicle according to claim 3, characterized in that: The upper end of the camera mounting plate (201) is fixedly connected to a heat dissipation protective shell (202); the upper end of the heat dissipation protective shell (202) is arranged as an inclined surface, and a plurality of air inlet holes are provided on the inclined surface at the upper end of the heat dissipation protective shell (202); and the upper end of the heat dissipation protective shell (202) is also provided with a plurality of heat dissipation holes.

5. The 250-megapixel oblique photography camera carried by an unmanned aerial vehicle according to claim 4, characterized in that: An annular bolt mounting ring (206) is provided at the upper end of the heat dissipation protection shell (202), and the annular bolt mounting ring (206) is fixedly connected to the upper end of the heat dissipation protection shell (202) via a plurality of fixed mounting rods (207), and a plurality of threaded holes are provided in the middle of the annular bolt mounting ring (206) for easy installation on a drone.

6. The 250-megapixel oblique photography camera carried by an unmanned aerial vehicle according to claim 4, characterized in that: A plurality of circular installation holes for mounting cameras (204) are provided in the middle of the camera mounting plate (201).

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