An Internet-based aviation maintenance simulation digital teaching system

Abstract

The present invention relates to the field of teaching systems, and provides an aviation maintenance simulation digital teaching system based on the Internet, including more than two teaching terminal systems, all of which are connected via the Internet; the teaching terminal system includes a fuselage, an angle adjustment device, a photographic device, and a refueling tank, a processing module is provided on the fuselage, the angle adjustment device and the refueling tank are both connected to the top wall of the fuselage, the photographic device is connected to the angle adjustment device, a portrait recognition module is provided in the photographic device, the portrait recognition module includes an image enhancement module and a noise reduction module, the image enhancement module includes a contrast enhancement module and a brightness enhancement module; a rotating maintenance table mechanism is also provided on the fuselage. The present invention allows the photographic device to move with the movement of the trainees, allows the trainees to see the maintenance operation of the teacher, and the teacher can also see the maintenance operation of the trainees, improves the convenience of maintenance learning and the accuracy of teaching, and realizes digital simulation teaching.

Description

Technical Field

[0001] The invention relates to the technical field of teaching systems, and in particular to an aviation maintenance simulation digital teaching system based on the Internet. Background Art

[0002] Aviation, a complex and strategically significant human activity, refers to the flight (navigation) activities of aircraft in the Earth's atmosphere (airspace). Aircraft engaged in flight activities, also known as aircraft, are divided into two categories: lighter-than-air aircraft and heavier-than-air aircraft. Heavier-than-air aircraft, such as airplanes and helicopters, are more common aircraft in our daily lives.

[0003] Aircraft maintenance requires maintenance personnel to go through a long period of learning and practice before they can perform aircraft maintenance operations. During maintenance learning, some maintenance teachers are not convenient to conduct on-site teaching at various maintenance training bases, and usually rely on remote video teaching. However, the current remote teaching is relatively inconvenient. When students learn to repair aircraft parts, most aircraft parts are large in size. Students need to learn maintenance operations on aircraft parts from multiple positions. The camera cannot move with the student's operating position, and the teacher cannot observe in real time whether the student's maintenance operation is correct. Summary of the invention

[0004] In view of the above technical problems, the present invention aims to provide an Internet-based aviation maintenance simulation digital teaching system. To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] An Internet-based aviation maintenance simulation digital teaching system includes more than two teaching terminal systems, all of which are connected via the Internet;

[0006] The teaching terminal system includes a fuselage, an angle adjustment device, a photographing device and a display device. The fuselage is provided with a processing module. The angle adjustment device and the display device are both connected to the top wall of the fuselage. The photographing device is connected to the angle adjustment device. The photographing device is provided with a portrait recognition module. The portrait recognition module includes an image enhancement module and a noise reduction module. The image enhancement module includes a contrast enhancement module and a brightness enhancement module.

[0007] There is also a rotating maintenance platform mechanism on the fuselage.

[0008] Furthermore, the photographic device collects an original image, and the contrast enhancement module performs contrast enhancement processing on the original image using a histogram equalization method to obtain a contrast enhanced image after processing.

[0009] Furthermore, the denoising module performs denoising on the contrast enhanced image using a DnCNN model to obtain a denoised image.

[0010] Furthermore, the brightness enhancement module uses a linear transformation method to perform brightness enhancement on the denoised image to obtain a brightness enhanced image.

[0011] Furthermore, a transmission cavity is provided in the fuselage, the transmission cavity is connected to the top wall of the fuselage through a top channel, the transmission cavity is connected to the front wall of the fuselage through a front channel, and the rotating maintenance platform mechanism includes a turntable mechanism and a friction force adjustment mechanism;

[0012] The turntable mechanism includes a turntable, a guide rod, a first elastic member, a guide seat, a turntable and a rotating shaft, wherein the turntable is rotatably connected to the bottom wall of the transmission cavity, the turntable is fixed to the upper end of the turntable, the guide seat is fixed to the top wall of the turntable, a seat groove is provided on the top wall of the guide seat, the guide rod is slidably connected to the inner wall of the seat groove, the upper end of the guide rod passes through the top channel and extends to the top of the fuselage, the turntable is fixed to the upper end of the guide rod, and the turntable is connected to the top wall of the turntable through the first elastic member;

[0013] The friction force adjustment mechanism includes a slider, a fifth elastic member, a rack, a first wedge block, a gear, a transmission member, a friction force adjustment block, a rigid support plate, a second wedge block, a slide bar, a force application plate and a second elastic member;

[0014] The slider is slidably connected to the side wall of the top channel, the slider extends into the transmission cavity, the slider is connected to the rear wall of the top channel through a fifth elastic member, the rack is slidably connected to the slider, the first wedge block is fixed to the rear wall of the slider, the top wall of the rack is rollingly connected with a ball, the screw is rotatably connected to the inner wall of the transmission cavity, the gear is fixed to one end of the screw, the transmission member is slidably connected to the bottom wall of the transmission cavity, a threaded hole is opened on the transmission member, the screw passes through the threaded hole, and the screw and the inner wall of the threaded hole are threadedly connected, the rigid support plate is fixed to the side wall of the transmission member, and the friction adjustment block is detachably connected to the top wall of the rigid support plate.

[0015] Furthermore, an automatic lubrication mechanism is provided in the transmission cavity.

[0016] Furthermore, the automatic lubrication mechanism comprises an oil reservoir and more than two oil transfer blocks, the oil reservoir is fixedly connected to the bottom wall of the transmission cavity, an oil storage cavity, a temporary storage cavity, a plate channel and an oil filling groove are provided on the oil reservoir, the oil storage cavity is filled with lubricating oil, the bottom wall of the oil storage cavity is connected with the top wall of the temporary storage cavity through the oil drop channel, the oil drop channel runs through the plate channel, the bottom wall of the temporary storage cavity is connected with the top wall of the oil filling groove through the oil outlet channel, a wedge-shaped partition is slidably connected to the inner wall of the plate channel, one side wall of the wedge-shaped partition extends to the outside of the plate channel, the wedge-shaped partition is connected to the inner wall of the plate channel through a third elastic member, a through hole is provided on the wedge-shaped partition, a stopper is slidably connected to the top wall of the oil filling groove, and the stopper is connected to the inner wall of the oil filling groove through a fourth elastic member;

[0017] The oil transfer block is fixedly connected to the rotating shaft, and an oil transfer groove is opened on the oil transfer block. The bottom wall of the oil transfer groove is inclined, and a convex strip is fixedly connected to the bottom wall of the oil transfer groove. The convex strip extends to the top of the oil transfer block, and the bottom wall of the oil transfer groove is connected to the bottom wall of the oil transfer block through an oil coating channel.

[0018] Furthermore, a clamping mechanism is provided on the top wall of the rotating platform.

[0019] Furthermore, the guide rod is in the shape of a cuboid, and the seat groove is in a shape that matches the guide rod.

[0020] Furthermore, the friction adjusting block is a sponge block.

[0021] The present invention has the following beneficial effects:

[0022] The present invention uses a portrait recognition module to enable the angle adjustment device to control the photographic device to move along with the movement of the trainees, so that the trainees can see the teacher's maintenance operations and the teacher can also see the trainees' maintenance operations, thereby improving the convenience of maintenance learning and the accuracy of teaching and realizing digital simulation teaching. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0024] Figure 1 It is a structural schematic diagram of an Internet-based aviation maintenance simulation digital teaching system of the present invention;

[0025] Figure 2 The present invention Figure 1 The structural diagram of the teaching terminal system;

[0026] Figure 3 The present invention Figure 2 Left view of the middle fuselage;

[0027] Figure 4 The present invention Figure 2 Enlarged view of the middle oil reservoir;

[0028] Figure 5 The present invention Figure 2 A top view of the central shaft;

[0029] Figure 6 The present invention Figure 2 Schematic diagram of the structure of the guide rod and guide seat.

[0030] Figure numerals: 1, fuselage; 2, angle adjustment device; 3, photographing device; 4, transmission chamber; 5, top channel; 6, rotating table; 7, clamping mechanism; 8, guide rod; 9, first elastic member; 10, guide seat; 11, seat groove; 12, rotating seat; 13, rotating shaft; 14, rack; 15, ball; 16, first wedge block; 17, gear; 18, screw; 19, transmission member; 20, threaded hole; 21, friction adjustment block; 22, rigid support plate; 23, second wedge block; 24 , slide bar; 25, force plate; 26, second elastic member; 27, front channel; 28, oil reservoir; 29, oil storage chamber; 30, temporary storage chamber; 31, oil drop channel; 32, plate channel; 33, wedge-shaped partition; 34, perforation; 35, third elastic member; 36, oil outlet channel; 37, stopper; 38, fourth elastic member; 39, oil transfer block; 40, oil transfer groove; 41, convex strip; 42, oil coating channel; 43, oiling groove; 44, slider; 45, fifth elastic member; 46, display screen device. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be connected through an intermediate medium, and 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 invention can be understood according to specific circumstances.

[0034] like Figure 1-Figure 6As shown, an Internet-based aviation maintenance simulation digital teaching system includes more than two teaching terminal systems, and all teaching terminal systems are connected via the Internet;

[0035] The teaching terminal system includes a body 1, an angle adjustment device 2, a photographing device 3 and a display device 46. The body 1 is provided with a processing module. The angle adjustment device 2 and the display device 46 are both connected to the top wall of the body 1. The photographing device 3 is connected to the angle adjustment device 2. The photographing device 3 is provided with a portrait recognition module. The portrait recognition module includes an image enhancement module and a noise reduction module. The image enhancement module includes a contrast enhancement module and a brightness enhancement module.

[0036] The fuselage 1 is also provided with a rotating maintenance platform mechanism.

[0037] According to an optional implementation of the present invention, the photographing device 3 captures an original image, and the contrast enhancement module performs contrast enhancement processing on the original image using a histogram equalization method to obtain a contrast enhanced image after processing.

[0038] Histogram equalization is often used to increase the local contrast of an image, especially when the contrast of the useful data of the image is quite close. In this way, the brightness can be better distributed on the histogram, so that it can be used to enhance the local contrast without affecting the overall contrast. Histogram equalization achieves this function by effectively expanding the commonly used brightness.

[0039] According to an optional implementation of the present invention, the denoising module performs denoising on the contrast enhanced image using a DnCNN model to obtain a denoised image.

[0040] The DnCNN model performs well in processing Gaussian noise, and is superior to many existing technical methods in terms of both quantitative indicators and visual quality. The deep network structure of the DnCNN model allows the model to learn complex image features to better restore image quality. The deep network can capture high-level semantic information of the image, which helps to improve the denoising effect.

[0041] According to an optional implementation of the present invention, the brightness enhancement module uses a linear transformation method to perform brightness enhancement on the denoised image to obtain a brightness enhanced image.

[0042] Linear transformation is a simple and effective method for enhancing image brightness. It improves the visual effect of an image by adjusting the brightness level of the image. The calculation process of linear transformation is simple, easy to understand and implement. It usually involves adding or multiplying each pixel value of the image, which is very computationally efficient.

[0043] According to an optional embodiment of the present invention, a transmission cavity 4 is opened in the fuselage 1, the transmission cavity 4 is connected to the top wall of the fuselage 1 through the top channel 5, the transmission cavity 4 is connected to the front wall of the fuselage 1 through the front channel 27, and the rotating maintenance platform mechanism includes a turntable mechanism and a friction adjustment mechanism;

[0044] The turntable mechanism includes a turntable 6, a guide rod 8, a first elastic member 9, a guide seat 10, a turntable 12 and a rotating shaft 13. The turntable 13 is rotatably connected to the bottom wall of the transmission chamber 4. The turntable 12 is fixed to the upper end of the rotation shaft 13. The guide seat 10 is fixed to the top wall of the turntable 12. The top wall of the guide seat 10 is provided with a seat groove 11. The guide rod 8 is slidably connected to the inner wall of the seat groove 11. The upper end of the guide rod 8 extends to the top of the fuselage 1 through the top channel 5. The turntable 6 is fixed to the upper end of the guide rod 8. The turntable 6 is connected to the top wall of the turntable 12 through the first elastic member 9.

[0045] The friction force adjustment mechanism includes a slider 44, a fifth elastic member 45, a rack 14, a first wedge block 16, a gear 17, a transmission member 19, a friction force adjustment block 21, a rigid support plate 22, a second wedge block 23, a slide bar 24, a force plate 25 and a second elastic member 26. The slider 44 is slidably connected to the side wall of the top channel 5, and the slider 44 extends into the transmission cavity 4. The slider 44 is connected to the rear wall of the top channel 5 through the fifth elastic member 45. The rack 14 is slidably connected to the slider 44. The first wedge block 23, a slide bar 24, a force plate 25 and a second elastic member 26. The block 16 is fixedly connected to the rear wall of the slider 44, the top wall of the rack 14 is rollingly connected with the ball 15, the screw 18 is rotatably connected to the inner wall of the transmission chamber 4, the gear 17 is fixedly connected to one end of the screw 18, the transmission member 19 is slidably connected to the bottom wall of the transmission chamber 4, a threaded hole 20 is opened on the transmission member 19, the screw 18 passes through the threaded hole 20, and the screw 18 and the inner wall of the threaded hole 20 are threadedly connected, the rigid support plate 22 is fixedly connected to the side wall of the transmission member 19, and the friction adjustment block 21 is detachably connected to the top wall of the rigid support plate 22.

[0046] According to an optional implementation of the present invention, an automatic lubrication mechanism is further provided in the transmission cavity 4 .

[0047] According to an optional embodiment of the present invention, the automatic lubrication mechanism includes an oil reservoir 28 and more than two oil transfer blocks 39, the oil reservoir 28 is fixed to the bottom wall of the transmission chamber 4, the oil reservoir 28 is provided with an oil storage chamber 29, a temporary storage chamber 30, a plate channel 32 and an oil filling groove 43, the oil storage chamber 29 is filled with lubricating oil, the bottom wall of the oil storage chamber 29 is connected with the top wall of the temporary storage chamber 30 through an oil drop channel 31, the oil drop channel 31 runs through the plate channel 32, the bottom wall of the temporary storage chamber 30 is connected with the top wall of the oil filling groove 43 through an oil outlet channel 36, the inner wall of the plate channel 32 is slidably connected with a wedge-shaped partition 33, one side wall of the wedge-shaped partition 33 extends to the outside of the plate channel 32, the wedge-shaped partition 33 is connected with the inner wall of the plate channel 32 through a third elastic member 35, a through hole 34 is provided on the wedge-shaped partition 33, the top wall of the oil filling groove 43 is slidably connected with a stopper 37, and the stopper 37 is connected with the inner wall of the oil filling groove 43 through a fourth elastic member 38;

[0048] The oil transfer block 39 is fixedly connected to the rotating shaft 13, and an oil transfer groove 40 is opened on the oil transfer block 39. The bottom wall of the oil transfer groove 40 is inclined, and a convex strip 41 is fixedly connected to the bottom wall of the oil transfer groove 40. The convex strip 41 extends to the top of the oil transfer block 39, and the bottom wall of the oil transfer groove 40 is connected to the bottom wall of the oil transfer block 39 through an oiling channel 42.

[0049] According to an optional implementation of the present invention, a clamping mechanism 7 is provided on the top wall of the rotating platform 6 .

[0050] According to an optional implementation of the present invention, the guide rod 8 is in the shape of a cuboid, and the seat groove 11 is in a shape that matches the guide rod 8 .

[0051] According to an optional implementation of the present invention, the friction adjustment block 21 is a sponge block.

[0052] Implementation process:

[0053] The portrait recognition module recognizes the portrait, so that the processing module controls the movement of the angle adjustment device 2, thereby controlling the photographic device 3 to move and shoot as the portrait moves. The image captured by the photographic device 3 can be displayed on all display screen devices 46, so that the trainees can see the teacher's maintenance operations, and the teacher can also see the trainees' maintenance operations.

[0054] The user steps on the force plate 25, and the force plate 25, the slide bar 24, and the second wedge block 23 overcome the elastic force of the second elastic member 26 and move downward, so that the second wedge block 23 pushes the first wedge block 16, the slider 44, and the rack 14 to move forward, and the rack 14 moves to the bottom of the rotating table 6, and the rack 14 and the gear 17 are meshed. The user places the aircraft component on the top wall of the rotating table 6 and uses the clamping mechanism 7 to clamp and fix the aircraft component. The heavier the aircraft component, the greater the downward movement distance of the rotating table 6 and the guide rod 8 to overcome the elastic force of the first elastic member 9, the greater the downward movement distance of the rack 14 pushed by the rotating table 6 along the slider 44, the greater the rotation angle of the gear 17 and the screw 18, the screw 18 and the threaded hole 20 are threadedly connected, the greater the left movement distance of the transmission member 19, the friction adjustment block 21, and the rigid support plate 22 along the bottom wall of the transmission cavity 4, and the friction The friction adjusting block 21 and the bottom wall of the rotating seat 12 are against each other. The smaller the contact area between the top wall of the friction adjusting block 21 and the bottom wall of the rotating seat 12, the smaller the friction between the friction adjusting block 21 and the rotating seat 12, and the easier it is to rotate the rotating shaft 13, the rotating seat 12, and the rotating table 6, so that the user can use the rotating table 6 to rotate the heavier aircraft components and perform maintenance from multiple angles, thereby improving the maintenance learning efficiency and convenience; on the contrary, the lighter the aircraft component, the larger the contact area between the friction adjusting block 21 and the rotating seat 12, the greater the friction between the friction adjusting block 21 and the rotating seat 12, and the more difficult it is to rotate the rotating shaft 13, the rotating seat 12, and the rotating table 6, so as to prevent the user from slightly applying external force to the rotating table 6 when repairing the aircraft component that is too light, so that the rotating table 6 will rotate too fast, and it is difficult to accurately control the rotating table 6 to rotate to the appropriate angle.

[0055] After the user places the aircraft component on the top wall of the rotating table 6, when the rotating table 6 stabilizes at a certain height, the user's feet need to leave the force application plate 25, and the second wedge block 23 moves up and resets under the elastic force of the second elastic member 26, and the rack 14 and the slider 44 move backward and reset under the elastic force of the fifth elastic member 45. The height of the rack 14 remains unchanged, the rack 14 disengages from the meshing with the gear 17, and the rack 14 moves back to the rear of the rotating table 6 to prevent the rotating table 6 from shaking up and down during rotation, causing the friction adjustment block 21 to change the contact area with the rotating seat 12, thereby affecting the preset appropriate friction size between the friction adjustment block 21 and the rotating seat 12.

[0056] When the force plate 25 is stepped on, the force plate 25 will also push the wedge-shaped partition plate 33 to move right, so that the through hole 34 and the oil drop channel 31 are connected, and part of the lubricating oil in the oil storage chamber 29 is added to the temporary storage chamber 30 through the oil drop channel 31. When the force plate 25 is released, the wedge-shaped partition plate 33 moves leftward and resets under the elastic force of the third elastic member 35 to re-block the oil drop channel 31. When the user rotates the rotating table 6 and the rotating shaft 13, the rotating shaft 13 will drive all the oil transfer blocks 39 to rotate, so that the oil transfer blocks 39 enter the oil filling groove 43, and the convex strip 41 pushes the stopper 37 to slide, and the stopper 37 releases the blockage of the oil outlet channel 36. The lubricating oil in the temporary storage chamber 30 passes through the oil outlet channel 36 and falls into the oil transfer groove 40 on the oil transfer block 39. The lubricating oil flows along the inclined bottom wall of the oil transfer groove 40 to the oil coating channel 42, and passes through the oil coating channel 42 and flows down along the outer wall of the rotating shaft 13, adding lubricating oil to the rotating shaft 13, maintaining the lubrication effect of the rotating shaft 13 and the bottom wall of the transmission chamber 4, so that the rotating shaft 13 can rotate smoothly. After the convex strip 41 breaks away from the block 37, the block 37 blocks the oil outlet channel 36 again under the elastic force of the fourth elastic member 38 to prevent the lubricating oil from dripping onto the bottom wall of the oil filling groove 43 and causing waste. Different oil transfer blocks 39 push away the block 37, so that the lubricating oil can be added to different positions of the rotating shaft 13, thereby improving the uniformity of the lubricating oil addition. When the lubricating oil in the temporary storage chamber 30 is consumed, the lubricating oil will not be added again to prevent the lubricating oil from being wasted due to excessive addition.

[0057] The present invention uses a portrait recognition module to enable the angle adjustment device 2 to control the photographic device 3 to move with the movement of the trainees, so that the trainees can see the teacher's maintenance operations, and the teacher can also see the trainees' maintenance operations, thereby improving the convenience of maintenance learning and the accuracy of teaching, and realizing digital simulation teaching; by stepping on the force plate 25, aircraft components of different weights can be placed on the top wall of the rotating table 6 for maintenance, and the rotation difficulty of the rotating shaft 13 and the rotating table 6 can be automatically adjusted to prevent the aircraft components from being too heavy to rotate and the aircraft components from being too light to control the rotation angle. In addition, an appropriate amount of lubricating oil can be automatically added to the rotating connection between the rotating shaft 13 and the transmission cavity 4, and the added lubricating oil is more uniform.

[0058] The components, modules, mechanisms and devices not described in detail in the present invention are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. An Internet-based aviation maintenance simulation digital teaching system, characterized by: It includes two or more teaching terminal systems, all of which are connected via the Internet; The teaching terminal system comprises a body (1), an angle adjustment device (2), a photographing device (3) and a display device (46), wherein the body (1) is provided with a processing module, the angle adjustment device (2) and the display device (46) are both connected to the top wall of the body (1), the photographing device (3) is connected to the angle adjustment device (2), and a portrait recognition module is provided in the photographing device (3), the portrait recognition module comprises an image enhancement module and a noise reduction module, and the image enhancement module comprises a contrast enhancement module and a brightness enhancement module; A rotating maintenance platform mechanism is also provided on the fuselage (1); A transmission chamber (4) is provided in the fuselage (1), the transmission chamber (4) is connected to the top wall of the fuselage (1) through a top channel (5), the transmission chamber (4) is connected to the front wall of the fuselage (1) through a front channel (27), and the rotary maintenance platform mechanism comprises a rotary platform mechanism and a friction force adjustment mechanism; The turntable mechanism comprises a turntable (6), a guide rod (8), a first elastic member (9), a guide seat (10), a turntable (12) and a rotating shaft (13), wherein the turntable (13) is rotatably connected to the bottom wall of the transmission chamber (4), the turntable (12) is fixedly connected to the upper end of the turntable (13), the guide seat (10) is fixedly connected to the top wall of the turntable (12), the top wall of the guide seat (10) is provided with a seat groove (11), the guide rod (8) is slidably connected to the inner wall of the seat groove (11), the upper end of the guide rod (8) passes through the top channel (5) and extends to the top of the machine body (1), the turntable (6) is fixedly connected to the upper end of the guide rod (8), and the turntable (6) is connected to the top wall of the turntable (12) through the first elastic member (9); The friction force adjustment mechanism comprises a slider (44), a fifth elastic member (45), a rack (14), a first wedge block (16), a gear (17), a transmission member (19), a friction force adjustment block (21), a rigid support plate (22), a second wedge block (23), a slide bar (24), a force application plate (25) and a second elastic member (26), wherein the slider (44) is slidably connected to a side wall of the top channel (5), the slider (44) extends into the transmission cavity (4), the slider (44) is connected to a rear wall of the top channel (5) via the fifth elastic member (45), the rack (14) is slidably connected to the slider (44), and the first wedge block (23) is a gear (17), a transmission member (19), a friction force adjustment block (21), a rigid support plate (22), a second wedge block (23), a slide bar (24), a force application plate (25) and a second elastic member (26). The block (16) is fixedly connected to the rear wall of the slider (44); the top wall of the rack (14) is rollingly connected with a ball (15); the screw (18) is rotatably connected to the inner wall of the transmission chamber (4); the gear (17) is fixedly connected to one end of the screw (18); the transmission member (19) is slidably connected to the bottom wall of the transmission chamber (4); a threaded hole (20) is provided on the transmission member (19); the screw (18) passes through the threaded hole (20); and the screw (18) and the inner wall of the threaded hole (20) are threadedly connected; the rigid support plate (22) is fixedly connected to the side wall of the transmission member (19); and the friction adjustment block (21) is detachably connected to the top wall of the rigid support plate (22); The user steps on the force plate (25), and the force plate (25), the slide bar (24), and the second wedge block (23) overcome the elastic force of the second elastic member (26) and move downward, so that the second wedge block (23) pushes the first wedge block (16), the slide bar (44), and the rack (14) forward, and the rack (14) moves to the bottom of the rotating table (6), and the rack (14) and the gear (17) mesh. The user places the aircraft component on the top wall of the rotating table (6), and uses the clamping mechanism (7) to clamp and fix the aircraft component. The heavier the aircraft component, the greater the downward movement distance of the rotating table (6) and the guide rod (8) to overcome the elastic force of the first elastic member (9), and the rotating table (6) ) The greater the downward movement distance of the rack (14) along the slider (44), the greater the rotation angle of the gear (17) and the screw (18), the greater the screw (18) and the threaded hole (20) are threadedly connected, the greater the leftward movement distance of the transmission member (19), the friction adjustment block (21), and the rigid support plate (22) along the bottom wall of the transmission chamber (4), the friction adjustment block (21) and the bottom wall of the rotating seat (12) are against each other, the smaller the contact area between the top wall of the friction adjustment block (21) and the bottom wall of the rotating seat (12), the smaller the friction between the friction adjustment block (21) and the rotating seat (12), and the easier it is for the rotating shaft (13), the rotating seat (12), and the rotating table (6) to rotate.

2. The Internet-based aviation maintenance simulation digital teaching system according to claim 1 is characterized in that: The photographic device (3) collects an original image, and the contrast enhancement module performs contrast enhancement processing on the original image using a histogram equalization method, thereby obtaining a contrast enhanced image after processing.

3. The Internet-based aviation maintenance simulation digital teaching system according to claim 2 is characterized in that: The denoising module performs denoising on the contrast enhanced image using a DnCNN model to obtain a denoised image.

4. The Internet-based aviation maintenance simulation digital teaching system according to claim 3 is characterized in that: The brightness enhancement module uses a linear transformation method to enhance the brightness of the denoised image to obtain a brightness enhanced image.

5. The Internet-based aviation maintenance simulation digital teaching system according to claim 1 is characterized in that: An automatic lubrication mechanism is also provided in the transmission cavity (4).

6. The Internet-based aviation maintenance simulation digital teaching system according to claim 5 is characterized in that: The automatic lubrication mechanism comprises an oil reservoir (28) and at least two oil transfer blocks (39). The oil reservoir (28) is fixedly connected to the bottom wall of the transmission cavity (4). The oil reservoir (28) is provided with an oil storage cavity (29), a temporary storage cavity (30), a plate channel (32) and an oil filling groove (43). The oil storage cavity (29) is filled with lubricating oil. The bottom wall of the oil storage cavity (29) is connected to the top wall of the temporary storage cavity (30) through an oil drop channel (31). The oil drop channel (31) runs through the plate channel (32). The bottom wall of the temporary storage cavity (30) is connected to the top wall of the temporary storage cavity (30). The oil outlet channel (36) is connected to the top wall of the oil filling groove (43); a wedge-shaped partition (33) is slidably connected to the inner wall of the plate channel (32); a side wall of the wedge-shaped partition (33) extends to the outside of the plate channel (32); the wedge-shaped partition (33) is connected to the inner wall of the plate channel (32) via a third elastic member (35); a through hole (34) is formed on the wedge-shaped partition (33); a stopper (37) is slidably connected to the top wall of the oil filling groove (43); and the stopper (37) is connected to the inner wall of the oil filling groove (43) via a fourth elastic member (38); The oil transfer block (39) is fixedly connected to the rotating shaft (13). An oil transfer groove (40) is formed on the oil transfer block (39). The bottom wall of the oil transfer groove (40) is in an inclined shape. A convex strip (41) is fixedly connected to the bottom wall of the oil transfer groove (40). The convex strip (41) extends to the top of the oil transfer block (39). The bottom wall of the oil transfer groove (40) is connected to the bottom wall of the oil transfer block (39) through an oiling channel (42). When the force applying plate (25) is stepped on, the force applying plate (25) will also push the wedge-shaped partition plate (33) to move rightward.

7. The Internet-based aviation maintenance simulation digital teaching system according to claim 6 is characterized in that: The top wall of the rotating platform (6) is provided with a clamping mechanism (7).

8. The Internet-based aviation maintenance simulation digital teaching system according to claim 7 is characterized in that: The guide rod (8) is in the shape of a cuboid, and the seat groove (11) is in a shape that matches the guide rod (8).

9. The Internet-based aviation maintenance simulation digital teaching system according to claim 8 is characterized in that: The friction force adjustment block (21) is a sponge block.

Images