Aerial surveying and mapping unmanned aerial vehicle with tilt camera

Abstract

This utility model discloses an aerial surveying drone equipped with an oblique photography camera, including a drone body and an oblique photography camera mounted below the drone body. A cage frame adapted to the shape of the lower part of the oblique photography camera is set outside the camera. A protective lens is set at the bottom of the cage frame, closely attached to the shooting window at the bottom of the oblique photography camera. Rotary drive components are respectively set on two opposite side walls in the upper part of the cage frame. Each rotary drive component has a rotating arm extending downward to below the shooting window. A cleaning support is set between the lower ends of the two rotating arms. A cleaning drive component is set at the center of the cleaning support, and a cleaning brush that contacts the protective lens is set on the top of the cleaning drive component. This utility model effectively protects the lens of the oblique photography camera through the protective lens, preventing dust and debris from adhering to the lens surface. The cleaning drive component drives the brush to clean the surface of the protective lens, effectively ensuring the shooting effect. It eliminates the need for frequent return to the drone to clean the lens, saving time and improving aerial photography efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of unmanned photography technology, and in particular relates to an aerial surveying drone equipped with an oblique photography camera. Background Technology

[0002] Oblique photogrammetry, as a mature and emerging surveying technology, is widely used in the surveying industry. Currently, when using a mounting device to combine a drone with an oblique photogrammetry camera, the camera lens easily accumulates dust and debris during flight, affecting normal aerial photography. To ensure the shooting effect, the drone must return to the base for cleaning before it can be used again, which is time-consuming and laborious, greatly affecting the efficiency of aerial photography. Therefore, this paper proposes an oblique photogrammetry camera mounting device for drones. Utility Model Content

[0003] The present invention provides an aerial surveying drone equipped with an oblique photography camera.

[0004] This utility model is achieved through the following technical solution: it includes a drone body and an oblique camera installed below the drone body. A cage frame with a shape matching the lower part of the oblique camera is set outside the oblique camera, and the two are fixedly connected by bolts or clamps. A protective lens is set at the bottom of the cage frame and is close to the shooting window at the bottom of the oblique camera. Rotary drive components are respectively set on two opposite side walls in the upper part of the cage frame. Each rotary drive component is equipped with a rotating arm extending downward to the bottom of the shooting window. A cleaning support is set between the lower ends of the two rotating arms. A cleaning drive component is set in the center of the cleaning support. A cleaning brush that contacts the protective lens is set on the top of the cleaning drive component.

[0005] Furthermore, the rotary drive component includes a rotary motor and a reversible ratchet mechanism. The rotary motor is fixedly mounted on the cage frame via a mounting base, and the reversible ratchet mechanism is provided on the rotating shaft of the rotary motor. A rotating arm is coaxially provided on the outside of the reversible ratchet mechanism.

[0006] The beneficial effects of this utility model are: it effectively protects the lens of the tilt camera by using a protective lens to prevent dust and debris from adhering to the lens surface; the cleaning drive unit drives a brush to clean the surface of the protective lens, preventing dust and debris from affecting normal aerial photography; it effectively protects the lens of the tilt camera body from contamination; and with the cooperation of a timer and control board, it realizes intermittent timed automatic cleaning of the lens, effectively ensuring the shooting effect, eliminating the need for frequent return to the air station to clean the lens, saving time, and improving aerial photography efficiency. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of this utility model;

[0008] Figure 2 A schematic diagram of the oblique photography camera and its cage.

[0009] Figure 3 This is a top-view structural diagram of the tilting camera and the cage.

[0010] Figure 4 A schematic diagram of the tilted camera and cage structure viewed from below;

[0011] Figure 5 This is a schematic diagram of the exploded structure of the cage frame and the rotating arm;

[0012] Figure 6 for Figure 5 A magnified structural diagram of A in the middle;

[0013] Numbers in the figure: 1~UAV body (1), 2~Oblique camera (2), 3~Bracket (3), 4~Cage frame (4), 5~Guard lens (5), 6~Rotary drive component (6), 7~Rotary motor (7), 8~Reversible ratchet mechanism (8), 9~Rotary arm (9), 10~Mounting part (10), 11~Groove (11), 12~Sealing ring (12), 13~Cleaning support (13), 14~Cleaning drive component (14), 15~Cleaning brush (15). Detailed Implementation

[0014] To enable those skilled in the art to better understand the technical solution of this utility model, the specific embodiments are described in detail below with reference to the accompanying drawings.

[0015] like Figures 1-6 The aerial surveying drone equipped with an oblique camera shown includes the drone body (1) and an oblique camera (2) installed below the drone body (1). A bracket (3) is set on the top of the oblique camera (2) to connect the drone, in order to solve the problem of motion interference caused by the side bracket (3). The lower surface of the oblique camera (2) is flat and has several recessed shooting holes. Each shooting hole is equipped with a shooting lens. A cage (4) that matches the shape of the lower part of the oblique camera (2) is set on the outside of the oblique camera (2). The two are fixedly connected by bolts or clamps. A protective lens (5) is set at the bottom of the cage (4) and is close to the bottom of the oblique camera (2). On the shooting window, a rotating drive (6) is set on two opposite side walls at the upper part of the cage (4). Each rotating drive (6) is set with a rotating arm (9) extending downward to the bottom of the shooting window. In order to avoid rotational interference, the length of the rotating arm (9) is set to be greater than 0.5 times the horizontal width or length of the tilt camera (2) according to the square structure, so as to ensure that the rotating arm (9) can rotate up and down. A cleaning support (13) is set between the lower ends of the two rotating arms (9). A cleaning drive (14) is set in the center of the cleaning support (13). A cleaning brush (15) that contacts the protective lens (5) is set on the top of the cleaning drive (14).

[0016] The rotary drive component (6) includes a rotary motor (7) and a reversible ratchet mechanism (8). The rotary motor (7) is fixedly mounted on the cage frame (4) by a mounting base. The reversible ratchet mechanism (8) is coaxially arranged on the rotating shaft of the rotary motor (7). (The reversible ratchet mechanism (8) structure is widely used in bicycles or reversible ratchet mechanism (8) wrenches. It is existing technology and will not be described in detail here.) The reversible ratchet mechanism (8) has a rotating arm (9) coaxially arranged on its exterior. By setting the reversible ratchet mechanism (8), the rotation posture of the rotating arm (9) can be controlled so that it can be suspended according to the rotation needs, instead of always being in a drooping state under the action of gravity.

[0017] The aforementioned rotating arm (9) is configured in an arc shape.

[0018] Furthermore, the cage (4) includes a limiting ring and a connecting arm. The limiting rings are respectively set at the bottom and middle of the tilt camera (2). At least three connecting arms are provided between the two limiting rings, and the two limiting rings are connected into one unit by the connecting arms.

[0019] The cleaning support (13) is arranged in a Chinese character shape. The cleaning drive (14) is fixedly installed on the cleaning support (13) through the mounting base. The cleaning drive (14) is a motor, and the working end (i.e. the rotating shaft) of the motor is upward. The cleaning brush (15) is fixedly installed on the working end of the cleaning drive (14). The length of the cleaning brush (15) is not less than the diameter of the shooting window or the protective lens (5), and the bristles of the cleaning brush (15) contact the lower surface of the protective lens (5) to avoid leaving cleaning dead corners on the protective lens (5) during the cleaning process.

[0020] Furthermore, the bristles of the cleaning brush (15) are made of sponge.

[0021] The lower end of the cage (4) is provided with an installation part (10), and the installation part (10) is provided with a groove (11) that matches the protective mirror (5). The protective mirror (5) is installed in the groove (11) and fixed with screws or glue to ensure that the outer surface of the protective mirror (5) is level and consistent, and to avoid any protrusions from blocking the rotating cleaning brush (15) and eliminating cleaning interference. At the same time, in order to prevent dust and water from entering, a sealing ring (12) is provided on the groove (11).

[0022] The protective goggles (5) are made of glass or acrylic sheet.

[0023] The rotating drive component (6) and the cleaning drive component (14) are electrically connected to the drive control board (the drive control board is a microcontroller). The drive control board is equipped with a timer to set the time nodes and working durations of the rotating drive component (6) and the cleaning drive component (14) to achieve intermittent timed cleaning and effectively ensure the shooting effect. The control board is electrically connected to the control device and power supply of the drone.

[0024] The working method of this utility model is as follows: The oblique camera (2) is installed and suspended directly below the drone body (1) via the bracket (3). The drive control board is connected to the drone's control device and power supply via power cord and data cable. The cleaning brush (15) is moistened with clean water or cleaning solution. During the flight of the drone body (1), the rotary motor (7) is started to drive the reversible ratchet mechanism (8) to rotate, which in turn drives the rotating arm (9) to rotate. When the driving rotating arm (9) rotates downward by 90 degrees, the cleaning support (13) and the cleaning drive component (14) on it are directly below the oblique camera (2), that is, the cleaning drive component (14) coincides with the axis of the oblique camera (2). The cleaning drive component (14) is then started. The cleaning brush (15) is rotated, and during the rotation, the brush bristles sweep the lens (5) to clean it, removing dust and debris attached to the lens (5), thereby preventing dust and debris from affecting normal aerial photography. After cleaning, the rotary motor (7) is started to drive the reversible ratchet mechanism (8) to rotate, which in turn drives the rotating arm (9) to rotate. When the rotating arm (9) rotates 90 degrees in the opposite direction or continues to rotate upward, the cleaning support (13) and its cleaning drive component (14) are positioned on the side of the tilt camera (2), thereby preventing the cleaning brush (15) from interfering with the tilt camera (2) shooting. When the lens (5) needs to be cleaned again, the above operation can be repeated.

Claims

1. An aerial mapping drone equipped with an oblique photography camera, comprising a drone body (1) and an oblique photography camera (2) mounted below the drone body (1), characterized in that: A cage (4) matching the shape of the lower middle part is arranged outside the oblique photography camera (2), and the two are fixedly connected by bolts or hoop fasteners. A protective lens (5) is arranged at the bottom of the cage (4) and closely adheres to the shooting window at the bottom of the oblique photography camera (2). Rotary driving members (6) are respectively arranged on two opposite side walls in the upper middle part of the cage (4). A rotary arm (9) extending downward to below the shooting window is arranged on each rotary driving member (6). A cleaning support (13) is arranged between the lower ends of the two rotary arms (9). A cleaning driving member (14) is arranged at the central part of the cleaning support (13), and a cleaning brush (15) contacting the protective lens (5) is arranged at the top of the cleaning driving member (14).

2. The aerial surveying and mapping UAV equipped with an oblique photography camera according to claim 1, characterized in that: The rotary driving member (6) includes a rotary motor (7) and a reversible ratchet mechanism (8). The rotary motor (7) is fixedly installed on the cage (4) through a mounting seat. The reversible ratchet mechanism (8) is arranged on the rotating shaft of the rotary motor (7), and the rotary arm (9) is coaxially arranged outside the reversible ratchet mechanism (8).

3. The aerial mapping drone equipped with an oblique photography camera according to claim 1, characterized in that: The rotary arm (9) is arranged in an arc structure.

4. The aerial mapping drone equipped with an oblique photography camera according to claim 1, characterized in that: The cleaning support (13) is arranged in a middle-shaped structure. The cleaning driving member (14) is fixedly installed on the cleaning support (13) through a mounting seat, and the working end of the cleaning driving member (14) faces upward.

5. The aerial surveying and mapping UAV equipped with an oblique photography camera according to claim 1, characterized in that: The cleaning brush (15) is fixedly arranged on the working end of the cleaning driving member (14). Its length is not less than the diameter of the shooting window or the protective lens (5), and the bristles of the cleaning brush (15) contact the lower surface of the protective lens (5).

6. The aerial surveying and mapping UAV equipped with an oblique photography camera according to claim 1, characterized in that: The lower end of the cage (4) is provided with a mounting portion (10). The mounting portion (10) is provided with a groove (11) matching the protective lens (5). The protective lens (5) is installed in the groove (11) and fixed by screws or glued.

7. The aerial surveying and mapping UAV equipped with an oblique photography camera according to claim 1, characterized in that: The cleaning driving member (14) is a motor.

8. The aerial surveying and mapping UAV equipped with an oblique photography camera according to claim 1, characterized in that: The material of the protective lens (5) is glass or acrylic plate.

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