Small photoelectric pod equipment based on optical super-resolution technology

Abstract

The utility model relates to the technical field of optoelectronics, in particular to a small photoelectric pod device based on the optical super-resolution technology, which comprises an azimuth base, a pitching frame and a photoelectric mechanism, the pitching frame is arranged on the surface of the bottom end of the azimuth base, and the photoelectric mechanism is arranged on the inner side of the middle of the surface of one side of the pitching frame. According to the device, the nacelle supports seamless switching between daytime work and night work through three kinds of photoelectric equipment, images can be collected remotely, interest point targets can be positioned, and visible light and infrared videos can be output in real time through full-high-definition videos; and unnecessary weight is reduced while strength is guaranteed, so that the pod is smaller in size and lighter in weight compared with products of the same type, light weight is achieved to the maximum extent under the condition that three kinds of optical equipment are carried, the discovery and recognition accuracy of a time-sensitive target can be improved, cost is reduced, and the pod is suitable for popularization and application. And a certain help is also provided for reducing the overall weight.

Description

Technical Field

[0001] The utility model relates to the technical field of optoelectronics, and in particular to a small optoelectronic pod device based on optical super-resolution technology. Background Art

[0002] After searching the existing Chinese patent document with the announcement number CN219204931U, an optoelectronic pod control device is disclosed, including an outer shell and a rear shell, the rear shell is located on one side of the outer shell, the top of the outer shell and the rear shell are fixedly connected with a positioning plate, the interior of the positioning plate is provided with a positioning groove, the interior of the positioning groove is movably connected with a slider, and the device is provided with a protective plate, the protective plate is movably connected between two sliders, and the protective plate and the slider are movably connected through a connecting shaft. After use, the protective plate is rotated upward and pushed to one side of the top of the outer shell, and the protective plate can be rotated to the side of the button and the joystick, so that one end of the protective plate is located in the groove on the baffle, and then the protective plate is positioned on one side of the outer shell, which has a protective effect on the control structure on the outer shell, so that when the device is moved, the control structure on the device is protected to reduce the possibility of bumps and damage.

[0003] The optoelectronic pod is a system composed of optoelectronic detection and monitoring equipment carried on aircraft, spacecraft or unmanned aerial vehicles. It is a high-tech avionics equipment widely used in unmanned aerial vehicles and other carriers. It is usually equipped with infrared thermal imagers, high-magnification visible light cameras, laser rangefinders and other equipment, and can achieve continuous work day and night, and adapt to a variety of environments and weather conditions. At present, the overall development trend of optoelectronic pods is miniaturization and light weight. The Changchun Institute of Optics, Fine Mechanics and Physics of the Chinese Academy of Sciences has developed a two-axis four-frame pod with a size of φ380×650 and a mass of 60kg. A certain research institute of China Ordnance has developed a two-axis four-frame pod with a size of φ380×480 and a mass of 35kg. Both can achieve a certain angle of rotation shooting on the pitch axis and the rotation axis, and the stability accuracy reaches 20μrad, but its weight and volume are relatively large, and it is usually suitable for medium and large unmanned aerial vehicles and other flying tools. In addition, the airborne three-light servo-stabilized pod developed by Wuhan Juhe Technology has two-axis movement directions of horizontal and pitch, and integrates visible light, infrared and laser ranging. It can be carried on various moving carriers such as ships and vehicles. The overall size of the pod is φ260×400mm and the weight is ≤10kg, which is similar to the pod designed in this patent. However, the pod design involved in this patent optimizes the optoelectronic system structure on this basis, making its structure more compact and smaller in size. It reduces weight while carrying three optoelectronic devices to adapt to the development of lightweight optoelectronic pods. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a small optoelectronic pod device based on optical super-resolution technology, aiming to solve the technical problem that the overall trend of the existing optoelectronic pod is miniaturization and light weight, but its weight and volume are large.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a small photoelectric pod device based on optical super-resolution technology, comprising an azimuth base, a pitch frame and a photoelectric mechanism, wherein the bottom surface of the azimuth base is provided with the pitch frame, and the photoelectric mechanism is provided on the inner side of the middle part of one side surface of the pitch frame.

[0007] The azimuth base includes a base shell, and a fixing stud is arranged on the inner end surface of the base shell. The inner side of the base shell is provided with an azimuth bearing inner ring, an angular contact ball bearing, a bearing pressure ring, an azimuth shaft, a motor pressure ring and a slip ring bracket from right to left. The inner side of one side surface of the motor pressure ring is provided with an encoder bracket and an azimuth motor in sequence, and the one side surface of the slip ring bracket is provided with an azimuth encoder.

[0008] The pitch frame includes a pitch frame, and the inner sides of the two side surfaces of the pitch frame are respectively provided with a right bearing and a left bearing, a deep groove ball bearing, a right shaft pressure ring, a pitch torque motor, a motor pressure ring, a pitch limit block and a pitch side cover are sequentially arranged on the surface of one side of the right bearing, and an angular contact ball bearing, a left shaft pressure ring, an encoder bracket, a motor encoder and a pitch side cover are sequentially arranged on the surface of one side of the left bearing.

[0009] The photoelectric mechanism includes a middle frame, and a front cover and a rear cover are respectively arranged on both side surfaces of the middle frame, a visible light camera bracket is arranged on the inner side of the middle part of one side surface of the middle frame, a laser rangefinder, a visible light camera and an infrared camera are arranged in sequence on one side surface of the front cover, and a counterweight fixing hole is arranged on the inner end of one side surface of the rear cover.

[0010] As a further description of the above technical solution:

[0011] The azimuth base and the pitch frame are fixedly connected, the azimuth base is a columnar structure, the pitch frame is a U-shaped hollow structure, the pitch frame and the photoelectric mechanism are fixedly connected, and the photoelectric mechanism is a thin-walled spherical structure.

[0012] As a further description of the above technical solution:

[0013] The bottom of the base shell is a hollow structure, and the inner side of the base shell is connected and fixed to the slip ring bracket through six fixing studs for fixing the conductive slip ring. The azimuth motor is a brushless DC torque motor.

[0014] As a further description of the above technical solution:

[0015] A groove is provided inside the pitch frame, and the pitch side covers on both sides of the pitch frame are set to have a thickness of 1.5 mm, and the pitch side covers are symmetrically arranged at both ends.

[0016] As a further description of the above technical solution:

[0017] The middle frame is fixed to the front cover and the rear cover by bolts, wherein the middle part of the inner side of the frame is provided in a groove shape, the middle frame is fixedly connected to the visible light camera bracket, the laser rangefinder and the infrared camera are connected and fixed by the screw holes of the front cover, and the laser rangefinder and the visible light lens are protected by an ultraviolet quartz glass layer and a plane convex lens respectively.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the utility model, a 30x optical zoom visible light camera, a 640×512 high-resolution infrared camera, a laser rangefinder that can measure automotive targets up to 4km and large targets up to 10km, and a high-precision gyro-stabilized platform are integrated through a two-axis three-light optoelectronic pod, which supports 1.0-8.0x continuous zoom (step length 0.1) and arbitrary area magnification, and a laser rangefinder that can measure automotive targets up to 4km and large targets up to 10km. The three optoelectronic devices enable the pod to support seamless switching between daytime and nighttime work, can collect images at a long distance, locate points of interest, and output full HD video in real time for visible light and infrared video.

[0020] 2. In the utility model, the diameter of the outer frame of the two-axis three-light optoelectronic pod is greatly reduced by designing the outer frame, optoelectronic system frame and other structures. The maximum diameter of the pitch outer frame does not exceed 240mm, the arc diameter of the optoelectronic system frame is only 240mm, the thickness of the side covers on both sides is designed to be 1.5mm, and multiple grooves are opened inside the pod to reduce unnecessary weight while ensuring strength. The pod is smaller and lighter than similar products, with an overall weight of 10kg, and it achieves maximum lightweight while carrying three optical devices.

[0021] 3. In the utility model, while ensuring the reduction of volume and light weight, an optoelectronic system equipped with three devices, namely a visible light camera, a high-resolution infrared camera and a laser rangefinder, is designed, and the working mode can be seamlessly switched between day and night.

[0022] 4. In the utility model, the two-axis three-light optoelectronic pod uses "super-resolution technology based on digital oscillation", which is a collaborative optical system working mode, combining new technologies of image quality enhancement and image super-resolution with wavefront information processing. This technology can improve the accuracy of discovery and recognition of time-sensitive targets, increase the resolution by more than 20% at the same aperture, and reduce the weight by more than 50% at the same image quality, which not only reduces the cost, but also helps to reduce the overall weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a schematic diagram of the disassembly of the azimuth base structure of the utility model;

[0026] Figure 3 It is a schematic diagram of the disassembly of the pitch frame structure of the utility model;

[0027] Figure 4 This is a schematic diagram of the disassembly of the optoelectronic mechanism structure of the utility model;

[0028] In the figure: 1. azimuth base; 2. pitch frame; 3. photoelectric mechanism; 4. base shell; 401, fixing stud; 5. azimuth bearing inner ring; 6. angular contact ball bearing; 7. bearing pressure ring; 8. azimuth axis; 9. motor pressure ring; 10. slip ring bracket; 11. encoder bracket; 12. azimuth motor; 13. azimuth encoder; 14. pitch frame; 15. right bearing; 16. left bearing; 17. deep groove ball bearing; 18. right shaft pressure ring; 19. pitch torque motor; 20. pitch limit block; 21. pitch side cover; 22. left shaft pressure ring; 23. motor encoder; 24. middle frame; 25. front cover; 26. rear cover; 27. visible light camera bracket; 28. laser rangefinder; 29. ​​visible light camera; 30. infrared camera; 31. counterweight fixing hole. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0030] In the drawings, the same reference numerals all refer to the same components.

[0031] Example 1

[0032] Reference Figure 1-4 The utility model provides an embodiment: a small optoelectronic pod device based on optical super-resolution technology, including an azimuth base 1, a pitch frame 2 and an optoelectronic mechanism 3. The bottom surface of the azimuth base 1 is provided with a pitch frame 2, and the optoelectronic mechanism 3 is provided on the inner side of the middle part of the surface of one side of the pitch frame 2.

[0033] The azimuth base 1 includes a base shell 4, and a fixing stud 401 is arranged on the inner end surface of the base shell 4. The inner side of the base shell 4 is provided with an azimuth bearing inner ring 5, an angular contact ball bearing 6, a bearing pressure ring 7, an azimuth shaft 8, a motor pressure ring 9 and a slip ring bracket 10 from right to left. The inner side of one side surface of the motor pressure ring 9 is provided with an encoder bracket 11 and an azimuth motor 12 in sequence, and the surface of one side of the slip ring bracket 10 is provided with an azimuth encoder 13.

[0034] The pitch frame 2 includes a pitch frame 14, and the inner sides of the two side surfaces of the pitch frame 14 are respectively provided with a right bearing 15 and a left bearing 16, a side surface of the right bearing 15 is sequentially provided with a deep groove ball bearing 17, a right shaft pressure ring 18, a pitch torque motor 19, a motor pressure ring 9, a pitch limit block 20 and a pitch side cover 21, and a side surface of the left bearing 16 is sequentially provided with an angular contact ball bearing 6, a left shaft pressure ring 22, an encoder bracket 11, a motor encoder 23 and a pitch side cover 21.

[0035] The photoelectric mechanism 3 includes a middle frame 24, and a front cover 25 and a rear cover 26 are respectively provided on both side surfaces of the middle frame 24, a visible light camera bracket 27 is provided on the inner side of the middle part of the surface of one side of the middle frame 24, a laser rangefinder 28, a visible light camera 29 and an infrared camera 30 are sequentially provided on the surface of one side of the front cover 25, and a counterweight fixing hole 31 is provided on the inner end of the surface of one side of the rear cover 26.

[0036] The azimuth base 1 and the pitch frame 2 are fixedly connected, wherein the azimuth base 1 is a columnar structure, the pitch frame 2 is a U-shaped hollow structure, the pitch frame 2 and the photoelectric mechanism 3 are fixedly connected, and the photoelectric mechanism 3 is a thin-walled spherical structure.

[0037] The bottom of the base shell 4 is a hollow structure, and the inner side of the base shell 4 is connected and fixed to the slip ring bracket 10 through six fixing screws 401 for fixing the conductive slip ring. The azimuth motor 12 is a brushless DC torque motor.

[0038] A groove is formed inside the pitch frame 14 , and the pitch side covers 21 on both sides of the pitch frame 14 are 1.5 mm thick, and the pitch side covers 21 are symmetrically arranged at both ends.

[0039] The middle frame 24 is fixed to the front cover 25 and the rear cover 26 by bolts, wherein the middle inner side of the frame 24 is grooved, the middle frame 24 and the visible light camera bracket 27 are fixedly connected, the laser rangefinder 28 and the infrared camera 30 are connected and fixed by screw holes of the front cover 25, and the laser rangefinder 28 and the visible light lens are protected by an ultraviolet quartz glass layer and a plane convex lens respectively.

[0040] Specifically, the structure comprises an azimuth base 1, a pitch frame 2, an optoelectronic mechanism 3, a base shell 4, a fixing stud 401, an azimuth bearing inner ring 5, an angular contact ball bearing 6, a bearing pressure ring 7, an azimuth shaft 8, a motor pressure ring 9, a slip ring bracket 10, an encoder bracket 11, an azimuth motor 12, an azimuth encoder 13, a pitch frame 14, a right bearing 15, a left bearing 16, a deep groove ball bearing 17, a right shaft pressure ring 18, a pitch torque motor 19, a pitch limit block 20, a pitch side cover 21, a left shaft pressure ring 22, a motor The encoder 23, the middle frame 25, the front cover 25, the rear cover 26, the visible light camera bracket 27, the laser rangefinder 28, the visible light camera 29, the infrared camera 30 and the counterweight fixing hole 31 form a small optoelectronic pod device based on optical super-resolution technology. The pod design of the small optoelectronic pod device based on optical super-resolution technology has the most widely used two-axis two-frame structure, the two axes are the pitch axis and the azimuth axis, the two frames are the inner frame and the outer frame, the design structure is mature, and it is suitable for light with small load and high precision. The electrical system adopts a cylindrical shape that is conducive to reducing wind resistance. Its main structure includes an azimuth base 1, a pitch frame 2 and an optoelectronic mechanism 3. The azimuth base 1 is conducive to reducing the wind resistance caused by the UAV during flight. It includes a slip ring bracket 10, an azimuth motor 12, an azimuth encoder 13, an azimuth axis 8 and other components. Its internal components and the azimuth base 1 are all spliced ​​and assembled. The base shell 4 reduces the overall weight while reducing the friction with the inner ring of the bearing, providing power for the entire azimuth and pitch rotation stability. The surface of the slip ring bracket 10 is designed with a circular hole for easy wiring and weight reduction. The azimuth axis 8 uses an angular contact ball bearing 6 to ensure precision while adapting to high-speed rotation. It is fixed to the azimuth bearing inner ring 5 by a bearing pressure ring 7. The azimuth motor 12 has the characteristics of large peak torque, fast response, simple structure, good control characteristics, etc., which can meet the requirements of lightweight and high performance. It is fixed on the azimuth axis 8 through a motor pressure ring 9, and cooperates with the internal structures of the azimuth base 1 to form an azimuth base 1 to realize 360° rotation of the pod on the azimuth axis. The pitch frame 2's pitch rack 14 facilitates routing and minimizes weight. The pitch side cover 21 protects against damage while being lightweight. The right bearing 15 uses a pitch torque motor 19 to provide power for the pitch axis system. The motor is fixed to the right bearing 15 by means of a motor pressure ring 9. The pitch side cover 21 has a relatively small internal space and heat dissipation factors must be considered. Therefore, the bearing uses a deep groove ball bearing 17 with a relatively low friction coefficient, which helps reduce energy loss and prevent the motor from overheating. In addition, a pitch limit block 20 is added. Under the condition that the existing software is used for limiting, a physical limit is added for double protection, and the pitch angle is controlled at -20°-110°. The left bearing 16 also uses a clamping method to fix the motor encoder 23. The detailed composition is as follows: Figure 3As shown. The front cover 25 of the optoelectronic mechanism 3 carries three optoelectronic devices, namely, an infrared camera 30, a visible light camera 29 and a laser rangefinder 28. A hollow bracket is fixed inside the middle frame 25 to fix the visible light camera 29 and the gyroscope. The counterweight fixing hole 31 is designed inside the rear cover 26 to add a counterweight to level the entire optoelectronic mechanism 3. In addition, the optoelectronic mechanism 3 carried by the two-axis three-light target positioning pod of this patent uses "digital oscillation-based super-resolution technology". This technology is different from ordinary digital image processing. It is a collaborative optical system working mode, combining wavefront information processing with image quality enhancement and image super-resolution. The new technology can improve the accuracy of time-sensitive target discovery and recognition, improve the resolution at the same caliber, and reduce the weight of the same image quality, which plays a certain role in reducing the overall quality of the pod.

[0041] Working principle: The azimuth base 1 and the pitch frame 2 realize the azimuth movement and pitch movement of the optoelectronic pod respectively. Both shaft systems are equipped with drive components such as DC torque motors to realize the driving functions of azimuth movement and pitch movement. In addition, the optoelectronic mechanism 3 inside the pitch frame 2 is equipped with a visible light camera 29, an infrared camera 30, a laser rangefinder 28 and a gyroscope. The visible light camera 29 provides high-resolution color video or images for detailed visual reconnaissance and surveillance under good lighting conditions. The infrared camera 30 uses infrared radiation emitted by objects to form images. At night or under low visibility conditions, it can detect and identify hidden targets. The laser rangefinder 28 accurately calculates the distance and provides the exact location information of the target. The three optical devices work together to achieve seamless switching between day and night. The gyroscope is used to measure the motion information of the inner pitch frame. By inputting the signals sensed by the gyroscope and the angular position sensor into the servo control system, feedback control is realized to eliminate the disturbance of the system. The control system transmits the status information and motion instructions of the pitch frame 2 to the azimuth base 1, and controls the azimuth base 1 to move with the pitch frame 2. The pod identifies and processes dynamic target information through optoelectronic equipment and image processing systems, and outputs the information after obtaining the deviation between the target position and the aiming position. The servo system controls the DC torque motor based on the received information to drive the rotation of the azimuth base 1 and the pitch frame 2 to achieve target tracking and positioning.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A small optoelectronic pod device based on optical super-resolution technology, comprising an azimuth base (1), a pitch frame (2) and an optoelectronic mechanism (3), characterized in that: The bottom surface of the azimuth base (1) is provided with a pitch frame (2), and the inner side of the middle portion of one side surface of the pitch frame (2) is provided with a photoelectric mechanism (3); The azimuth base (1) comprises a base shell (4), the inner end surface of the base shell (4) is provided with a fixing stud (401), the inner side of the base shell (4) is provided with an azimuth bearing inner ring (5), an angular contact ball bearing (6), a bearing pressure ring (7), an azimuth shaft (8), a motor pressure ring (9) and a slip ring bracket (10) in sequence from right to left, the inner side of one side surface of the motor pressure ring (9) is provided with an encoder bracket (11) and an azimuth motor (12) in sequence, and the one side surface of the slip ring bracket (10) is provided with an azimuth encoder (13); The pitch frame (2) comprises a pitch frame (14), and the inner sides of the two side surfaces of the pitch frame (14) are respectively provided with a right bearing (15) and a left bearing (16); a side surface of the right bearing (15) is sequentially provided with a deep groove ball bearing (17), a right shaft pressure ring (18), a pitch torque motor (19), a motor pressure ring (9), a pitch limit block (20) and a pitch side cover (21); and a side surface of the left bearing (16) is sequentially provided with an angular contact ball bearing (6), a left shaft pressure ring (22), an encoder bracket (11), a motor encoder (23) and a pitch side cover (21); The photoelectric mechanism (3) comprises a middle frame (24), and the two side surfaces of the middle frame (24) are respectively provided with a front cover (25) and a rear cover (26), a visible light camera bracket (27) is provided on the inner side of the middle part of one side surface of the middle frame (24), a laser rangefinder (28), a visible light camera (29) and an infrared camera (30) are sequentially provided on one side surface of the front cover (25), and a counterweight fixing hole (31) is provided on the inner end of one side surface of the rear cover (26).

2. According to claim 1, a small optoelectronic pod device based on optical super-resolution technology is characterized in that: The azimuth base (1) and the pitch frame (2) are fixedly connected, the azimuth base (1) is a columnar structure, the pitch frame (2) is a U-shaped hollow structure, the pitch frame (2) and the photoelectric mechanism (3) are fixedly connected, and the photoelectric mechanism (3) is a thin-walled spherical structure.

3. According to the small optoelectronic pod device based on optical super-resolution technology as claimed in claim 1, it is characterized in that: The bottom of the base shell (4) is a hollow structure, and the inner side of the base shell (4) is connected and fixed to the slip ring bracket (10) via six fixing studs (401) for fixing the conductive slip ring. The azimuth motor (12) is a DC brushless torque motor.

4. According to the small optoelectronic pod device based on optical super-resolution technology as claimed in claim 1, it is characterized in that: A groove is provided inside the pitch frame (14), and the pitch side covers (21) on both sides of the pitch frame (14) are 1.5 mm thick, and the pitch side covers (21) are symmetrically arranged at both ends.

5. According to the small optoelectronic pod device based on optical super-resolution technology as claimed in claim 1, it is characterized in that: The middle frame (24) is fixed to the front cover (25) and the rear cover (26) by bolt connection, wherein the middle portion of the inner side of the frame (24) is provided in a groove shape, the middle frame (24) is fixedly connected to the visible light camera bracket (27), the laser rangefinder (28) and the infrared camera (30) are connected and fixed through the screw holes of the front cover (25), and the laser rangefinder (28) and the visible light lens are respectively protected by an ultraviolet quartz glass layer and a plane convex lens.

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