Multi-mode photoelectric pod for unmanned aerial vehicle

Abstract

The application discloses a multi-mode photoelectric pod for unmanned aerial vehicle, which comprises a roll assembly, the roll assembly comprises a core frame, a plurality of photoelectric imaging loads, and a first driving mechanism for driving each photoelectric imaging load to rotate, and each photoelectric imaging load is rotatably installed on the core frame; the first driving mechanism comprises a roll motor, a first eccentric shaft, a rotating disc and a second eccentric shaft, the roll motor drives the rotating disc through the first eccentric shaft, a plurality of second eccentric shafts are rotatably installed on the rotating disc, and each second eccentric shaft drives an imaging load to rotate. The roll motor of the application drives the rotating disc through the first eccentric shaft, so that the rotating disc rotates around the motor output shaft, and each photoelectric imaging load is driven to rotate through the second eccentric shaft. When the unmanned aerial vehicle is tilted, the photoelectric imaging load rotates to eliminate image rotation, thereby improving the imaging quality, the boresight of each photoelectric imaging load does not change, and the imaging is clearer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optoelectronic pod, in particular to a multi-mode optoelectronic pod for unmanned aerial vehicle. BACKGROUND

[0002] The optoelectronic pod technology and the pod thereof are important components in the optoelectronic reconnaissance and warning technology and equipment, and are also the core equipment for unmanned aerial vehicle reconnaissance, which will fill the tactical reconnaissance role of manned aircraft, and therefore various optoelectronic pods for various purposes are being developed by various countries. The optoelectronic pod can be widely used in land, sea, air and space reconnaissance, and its carrier is vehicles, ships, aircraft and satellites, etc.

[0003] During the execution of reconnaissance and strike tasks, the unmanned aerial vehicle needs to carry various optoelectronic payloads, such as visible light cameras, infrared thermal imagers, ultraviolet thermal imagers and other equipment. In the flight process, the main reasons for the instability of the visual axis pointing direction include the attitude motion of the unmanned aerial vehicle and the wind resistance moment in flight. These external factors will seriously affect the imaging quality of the optoelectronic equipment carried by the unmanned aerial vehicle, resulting in image blur and reduced clarity.

[0004] The changes of the pitch, yaw and roll attitudes of the unmanned aerial vehicle in the flight process will cause image rotation of the optoelectronic imaging payload during imaging. In order to eliminate the image rotation and improve the imaging quality, the optoelectronic pod can adopt a three-axis three-frame structure, and the compound motion of the azimuth axis system, the pitch axis system and the roll axis system can compensate the image rotation caused by the attitude change of the helicopter. The roll axis system refers to the self-rotation of the entire movement core with its own axis, and a single imaging movement core, for example, a movement core equipped with only a visible light imaging detection device, can effectively eliminate the image rotation caused by the roll attitude change of the unmanned aerial vehicle when the movement core rotates.

[0005] When various optoelectronic payloads, such as visible light cameras, infrared thermal imagers and ultraviolet thermal imagers, are equipped on the unmanned aerial vehicle, the three optoelectronic payloads are usually installed on the same movement core, and when the movement core rotates, the three optoelectronic payloads revolve along the axis of the movement core, and the visual axes of the three optoelectronic payloads are deflected, thereby affecting the stability of imaging. SUMMARY

[0006] In order to solve the above problems, the present application provides a multi-mode optoelectronic pod for unmanned aerial vehicle, so that multiple optoelectronic payloads rotate on the roll axis system, and the stability of imaging is ensured.

[0007] To achieve the above object, the present application provides a multi-mode photoelectric pod for unmanned aerial vehicle, which comprises a roll assembly, the roll assembly comprises a core frame, a plurality of photoelectric imaging loads, and a first driving mechanism for driving each photoelectric imaging load to rotate, and each photoelectric imaging load is rotatably installed on the core frame; the first driving mechanism comprises a roll motor, a first eccentric shaft, a rotating disc and a second eccentric shaft, the roll motor drives the rotating disc through the first eccentric shaft, the rotating disc is rotatably installed with a plurality of second eccentric shafts, and each second eccentric shaft drives an imaging load to rotate.

[0008] As a preferred embodiment of the above-mentioned scheme, the photoelectric imaging load comprises a visible light imaging load, an infrared imaging load and an ultraviolet imaging load, and the three are arranged in a triangular shape; three eccentric shafts are uniformly installed on the rotating disc, and the eccentric shafts are respectively fixedly connected with the visible light imaging load, the infrared imaging load and the ultraviolet imaging load.

[0009] As a preferred embodiment of the above-mentioned scheme, the multi-mode photoelectric pod further comprises a pitch assembly, the pitch assembly forms a closed installation cavity inside, the roll assembly is installed in the installation cavity, and the roll assembly is driven by the pitch assembly to rotate for pitch adjustment.

[0010] As a preferred embodiment of the above-mentioned scheme, the pitch assembly comprises a front cover, a pitch support and a rear cover, the front cover and the rear cover are respectively installed on two sides of the pitch support to form the closed installation cavity, and the front cover is provided with a transparent photoelectric window; a pitch motor for driving the pitch support to rotate is installed on a side surface of the pitch support.

[0011] As a preferred embodiment of the above-mentioned scheme, the core frame is fixed on the inner wall of the pitch support on two sides, the core frame is provided with three accommodation cavities, and each photoelectric imaging load is rotatably installed in the accommodation cavity of the core frame through a bearing.

[0012] As a preferred embodiment of the above-mentioned scheme, the multi-mode photoelectric pod further comprises an azimuth assembly, the azimuth assembly is provided with an external end portion and an installation groove, the pitch assembly is installed in the inner wall of the installation groove on two sides, and the azimuth assembly drives the pitch assembly to rotate for azimuth adjustment.

[0013] As a preferred embodiment of the above-mentioned scheme, the azimuth assembly comprises a mounting seat, an azimuth motor and an azimuth support, the azimuth motor is fixed on the mounting seat, and the azimuth support is installed on the output shaft of the azimuth motor; the azimuth support extends downward on two sides to form a connecting surface, and the installation groove is formed between the two connecting surfaces.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] 1. The roll motor drives the rotating disc by the first eccentric shaft, so that the rotating disc rotates around the motor output shaft, and meanwhile, each photoelectric imaging load is driven to rotate by the second eccentric shaft, when the unmanned aerial vehicle tilts, the photoelectric imaging load rotates to eliminate image rotation, thereby improving the imaging quality, the boresight of each photoelectric imaging load does not change, and the imaging is clearer.

[0016] 2. The whole structure of the pod is reasonable in design, the pitch assembly, the roll assembly and the azimuth assembly realize multi-azimuth movement of the photoelectric imaging load, the pod has high stability precision and good imaging quality; different types of photoelectric imaging loads are arranged to meet different use requirements of users. BRIEF DESCRIPTION OF DRAWINGS

[0017] The application will be further described in detail below in combination with the drawings and embodiments of the application

[0018] Figure 1 Fig. 1 is a structural schematic view of the application;

[0019] Figure 2 Fig. 2 is an exploded view of the parts of the application;

[0020] Figure 3 Figure 4 Fig. 3 is a structural sectional view of the application;

[0021] Figure 5 Fig. 4 is a structural schematic view of the first driving mechanism of the application.

[0022] In the drawings, the roll assembly 1, the core frame 11, the photoelectric imaging load 12, the pitch assembly 2, the front cover body 21, the pitch support 22, the rear cover body 23, the photoelectric window 24, the pitch motor 25, the movable shaft 26, the azimuth assembly 3, the mounting seat 31, the azimuth motor 32, the azimuth support 33, the port 34, the first driving mechanism 4, the roll motor 41, the first eccentric shaft 42, the rotating disc 43, and the second eccentric shaft 44 are marked. DETAILED DESCRIPTION

[0023] In the description of the application, it should be noted that, for the azimuth words, such as the terms “center”, “lateral (X)”, “longitudinal (Y)”, “vertical (Z)”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise” and the like indicate the azimuth and positional relationship based on the azimuth or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular azimuth, be constructed and operated in a particular azimuth, and cannot be understood as limiting the specific protection scope of the application.

[0024] ​In addition, the terms "first", "second" are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the definition of "first", "second" features can explicitly or implicitly include one or more features, and the meaning of "several", "several" in the description of the present application is two or more, unless otherwise explicitly specified.

[0025] Referring to the drawings. The unmanned aerial vehicle multi-mode optoelectronic pod described in the embodiment comprises a roll assembly 1, a pitch assembly 2 and an azimuth assembly 3.

[0026] The azimuth assembly 3 comprises a mounting seat 31, an azimuth motor 32 and an azimuth bracket 33, the mounting seat 31 is provided with a port 34 connected with external equipment; the azimuth motor 32 is fixed on the mounting seat 31, the azimuth bracket 33 is installed on the output shaft of the azimuth motor 32, and the azimuth motor 32 can drive the azimuth bracket 33 to rotate around the Z axis; the connecting surfaces are extended downward on both sides of the azimuth bracket 33, and the mounting groove is formed between the two connecting surfaces; the pitch assembly 2 is installed in the mounting groove, so as to be driven by the azimuth motor 32 to rotate around the Z axis as the axis.

[0027] The pitch assembly 2 comprises a front cover 21, a pitch bracket 22 and a rear cover 23, the front cover 21 and the rear cover 23 are installed on both sides of the pitch bracket 22 respectively to form a closed mounting cavity, the front cover 21 is provided with a transparent optoelectronic window 24, which facilitates the optoelectronic imaging load to obtain imaging information through the optoelectronic window. The pitch motor 25 for driving the pitch bracket 22 to rotate is installed on the side surface of the pitch bracket 22, the pitch motor 25 is installed on the connecting surface of the azimuth bracket 33, and the other end of the pitch bracket 22 is rotatably installed on the other connecting surface of the azimuth bracket 33 through the movable shaft 26 and the bearing. The roll assembly 1 is installed in the mounting cavity of the pitch assembly 2 and is driven by the pitch motor 25 to rotate around the X axis as the axis.

[0028] The roll assembly 1 comprises a core frame 11, three optoelectronic imaging loads 12 and a first driving mechanism 4 for driving each optoelectronic imaging load 12 to rotate, the core frame 11 is fixed on the inner wall of the pitch bracket 22 on both sides, and the core frame 11 is provided with three accommodating cavities, each optoelectronic imaging load 12 is rotatably installed in the accommodating cavity of the core frame 11 through a bearing. The optoelectronic imaging load 12 comprises a visible light imaging load, an infrared imaging load and an ultraviolet imaging load, which are arranged in a triangular shape; the visible light imaging load is a visible light camera, the infrared imaging load is an infrared imager, and the ultraviolet imaging load is an ultraviolet imager.

[0029] The first driving mechanism 4 comprises a horizontal roll motor 41, a first eccentric shaft 42, a rotating disc 43 and a second eccentric shaft 44, the horizontal roll motor 41 is installed on the pitching support 22, the output shaft of the horizontal roll motor 41 is installed with the first eccentric shaft 42, the other end of the first eccentric shaft 42 is rotatably installed at the center of the rotating disc 43; one end of three second eccentric shafts 44 is rotatably installed on the rotating disc 43, and the three installation positions are consistent, the other end of the three second eccentric shafts 44 is fixedly connected with three photoelectric imaging loads 12, so as to drive the photoelectric imaging loads 12 to rotate in the accommodating groove of the movement frame 11.

[0030] In use:

[0031] 1. The horizontal roll motor 41 drives the rotating disc 43 to rotate around the axis of the output shaft of the horizontal roll motor through the first eccentric shaft 42, in the rotating process of the rotating disc 43, the three photoelectric imaging loads 12 are driven to rotate in the accommodating groove of the movement frame around the Y axis as the axis;

[0032] 2. The pitching motor 25 can drive the pitching support 22 to rotate, so as to drive the horizontal roll assembly 1 in the installation cavity to rotate, so that the three photoelectric imaging loads 12 rotate around the X axis as the axis for pitching adjustment;

[0033] 3. The azimuth motor 32 can drive the azimuth support 33 to rotate, so as to drive the pitching assembly 2 in the installation groove to rotate, the pitching assembly 2 drives the internal horizontal roll assembly 1 to rotate, finally the three photoelectric imaging loads 12 rotate around the Z axis as the axis for azimuth adjustment, so as to realize the multi-azimuth rotation of the photoelectric imaging loads.

[0034] The above only describes the preferred embodiments of the present application, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical scheme belonging to the idea of the present application is also within the protection scope of the present application. It should be noted that, for ordinary skilled in the art, some improvements and decorations without departing from the principle of the present application are also considered as the protection scope of the present application.

Claims

1. A multi-mode optoelectronic pod for unmanned aerial vehicles (UAVs), characterized in that: The system includes a roll assembly, which comprises a frame, multiple photoelectric imaging payloads, and a first drive mechanism that drives each photoelectric imaging payload to rotate. Each photoelectric imaging payload is rotatably mounted on the frame. The first drive mechanism includes a roll motor, a first eccentric shaft, a rotating disk, and second eccentric shafts. The roll motor drives the rotating disk through the first eccentric shaft. Multiple second eccentric shafts are rotatably mounted on the rotating disk, and each second eccentric shaft drives an imaging payload to rotate.

2. The multi-mode optoelectronic pod for unmanned aerial vehicles as described in claim 1, characterized in that: The photoelectric imaging payload includes a visible light imaging payload, an infrared imaging payload, and an ultraviolet imaging payload, which are arranged in a triangular pattern. Three eccentric shafts are evenly installed on the rotating disk, and the eccentric shafts are respectively fixedly connected to the visible light imaging payload, the infrared imaging payload, and the ultraviolet imaging payload.

3. The multi-mode optoelectronic pod for unmanned aerial vehicles as described in claim 1, characterized in that: It also includes a pitch assembly, which forms a sealed mounting cavity inside. The roll assembly is installed in the mounting cavity and drives the roll assembly to perform pitch adjustment rotation through the pitch assembly.

4. The multi-mode optoelectronic pod for unmanned aerial vehicles as described in claim 3, characterized in that: The pitch assembly includes a front cover, a pitch support, and a rear cover. The front cover and the rear cover are respectively installed on both sides of the pitch support to form a sealed installation cavity. The front cover is provided with a transparent photoelectric window. A pitch motor that drives the pitch support to rotate is installed on the side of the pitch support.

5. A multi-mode optoelectronic pod for unmanned aerial vehicles as described in claim 4, characterized in that: The frame is fixed on both sides to the inner wall of the pitch support. The frame has three accommodating cavities, and each photoelectric imaging load is rotatably installed in the accommodating cavity of the frame through bearings.

6. The multi-mode optoelectronic pod for unmanned aerial vehicles as described in claim 3, characterized in that: It also includes an azimuth component, which has an external end and a mounting slot. The pitch component is mounted on both sides of the mounting slot. The azimuth component drives the pitch component to perform azimuth adjustment and rotation.

7. A multi-mode optoelectronic pod for unmanned aerial vehicles as described in claim 6, characterized in that: The orientation component includes a mounting base, an orientation motor, and an orientation bracket. The orientation motor is fixed on the mounting base, and the orientation bracket is mounted on the output shaft of the orientation motor. The orientation bracket extends downwards on both sides to form connecting surfaces, and a mounting groove is formed between the two connecting surfaces.

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