Copying gesture tracking system for intelligent learning desk

Abstract

The invention discloses a copying gesture tracking system for an intelligent learning desk, which comprises an overturning plate, the overturning plate is arranged on the desktop of the intelligent learning desk, the upper surface and the lower surface of the overturning plate are respectively provided with an upper sinking groove and a lower sinking groove, and the upper sinking groove is provided with an adaptive transparent plate; comprising a conveying unit, the conveying unit comprises two annular air belts symmetrically distributed on the left side and the right side of an upper sinking groove and two driving wheels corresponding to the annular air belts, the front side wall and the rear side wall of the upper sinking groove are each provided with an arc-shaped channel used for being communicated with a lower sinking groove, and one driving wheel is rotationally connected into each arc-shaped channel; and each annular air belt is arranged on two opposite driving wheels in a sleeving manner. According to the invention, the copying learning can be completed only through small-range rotation of eyeballs without neck movement, the sight line does not need to be repositioned in the whole process, the best state of copying and reading can be maintained, namely, the user can enter a concentration state more easily, so that the copying efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of artificial intelligence technology, specifically relating to a handwriting gesture tracking system for a smart study desk. Background Technology

[0002] Due to concerns about children's physical development, height-adjustable study desks are increasingly favored by parents for extended periods. Current height-adjustable study desks have relatively simple functions, such as basic height adjustment, desktop angle adjustment, and lighting. However, during the school years, especially in elementary school, copying accounts for the highest proportion of learning (approximately 30% to 60%). This stage is the "golden age" of copying, as it promotes literacy, writing, vocabulary acquisition, and basic concept building, making it a key component of elementary education. To address this need, some height-adjustable study desks have added a copying board for easier copying. For example, patent application number 202120420921.9 discloses an accounting study desk with a flip-up board on the desktop. When copying is needed, the board can be angled relative to the desktop, allowing the notebook to lean against the board for easier copying.

[0003] The aforementioned rotating shelf is actually a simple book-copying shelf. Like most book-copying shelves, it is placed directly in front of the user. This type of book-copying shelf has the following shortcomings: 1. Each time you look at a book you're copying, you need to look up or slightly, which easily disrupts your focused flow state. Efficiency is highest when you're in a "flow" state while studying or copying. Frequently looking up, down, and repositioning your gaze constantly breaks this state. The brain needs to switch between "copying" and "reading" modes, and each switch incurs a small cognitive cost, which accumulates and significantly reduces overall efficiency.

[0004] 2. Frequent and repetitive head tilting and lowering will keep the neck muscles and ligaments in a state of tension and strain, which can easily lead to the following discomfort: (1) Neck muscle strain and increased pressure on the cervical spine. Neck muscles are sore and stiff. If this continues for a long time, it will accelerate the degeneration of the cervical intervertebral discs and may lead to cervical spondylosis, with symptoms such as headache, dizziness and numbness in the arms.

[0005] (2) Visual fatigue. Frequent switching of the gaze between two surfaces at different distances (a copybook in the distance and a notebook in the distance) requires the eye muscles to constantly adjust the focus, which can easily lead to eye strain, dryness, and blurred vision, thus aggravating visual fatigue.

[0006] The core principle of ergonomic copying methods is to place the copying book within the same line of sight as the notebook the user is writing in, minimizing head and neck movement and relying solely on eye movement. For example, the copying book could be positioned to the left or right, or above or below, of the notebook. The closer the copying book is to the notebook, the more efficient the copying process becomes, protecting the cervical spine and eyesight, and making the learning process easier and more sustainable. However, these drawbacks of copying are not addressed in the current development direction of height-adjustable study desks, thus failing to provide positive effects on efficiency, concentration, and physical health. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a handwriting gesture tracking system for a smart study desk, comprising a flip-up plate installed on the desktop of the smart study desk. The flip-up plate has an upper recess and a lower recess on its top and bottom, respectively, with the upper recess having a suitable transparent plate. The system includes a transmission unit comprising two annular air belts symmetrically distributed on the left and right sides of the upper recess and two drive wheels corresponding to each annular air belt. The front and rear side walls of the upper recess are each provided with arc-shaped channels connecting to the lower recess, and each arc-shaped channel rotatably connects to a drive wheel. Each annular air belt is fitted onto two opposing drive wheels, and the synchronous rotation of the two drive wheels allows the annular air belt to shuttle between the upper and lower recesses. The two arc-shaped channels on the front side wall are connected by a paper feeding channel. The inner side of each annular air belt has a corresponding... The air belt has a vacuum suction cup connected to its inner cavity, and the vacuum suction cup is offset from the corresponding drive wheel; it includes a vacuum unit, which includes a tube winder, a hose, and a vacuum pump; a tube winder is rotatably connected in each arc-shaped channel, and each tube winder winds a hose, with the beginning of each hose connected to the corresponding vacuum pump; the ends of the hoses of the two tube winders located on the front sidewall extend along the upper surface of the corresponding annular air belt to the rear sidewall, and the ends of the hoses are connected to the air pipe; the ends of the hoses of the two tube winders located on the rear sidewall extend along the upper surface of the corresponding annular air belt to the front sidewall, and the ends of the hoses are connected to the air pipe; it includes an identification unit, which includes a first camera assembly installed in the upper sinking tank, with the camera end of the first camera assembly facing the transparent plate; it includes a processing unit; the processing unit is electrically connected to the conveying unit, the vacuum unit, and the identification unit respectively.

[0008] The preferred embodiment of the handwriting gesture tracking system for a smart learning desk in this invention is as follows: A paper-holding area is provided in the upper recess. Two annular air bands are located near the left and right sides of the paper-holding area, respectively. Specifically, the left side of the left annular air band coincides with the blank area on the left side of the paper-holding area, and the right side of the right annular air band coincides with the blank area on the right side of the paper-holding area. Typically, blank areas are reserved on all four sides of the writing paper. The annular air bands are directly opposite these blank areas to prevent them from obscuring the text area in the middle of the writing paper. However, each annular air band has a reserved space at the edge of its corresponding blank area. Each annular air band has five vacuum suction cups, but not limited to five. All vacuum suction cups are distributed along the length of the annular air band on one side of the inner side of the annular air band, and all vacuum suction cups are located above the paper-holding area. The annular air belt is divided into left and right halves along its center. The left half of the annular air belt on the left side of the upper sinking trough is solid, while the right half is hollow, forming an inner cavity. The length of the hollow structure is no more than half the total length of the annular air belt (at the initial position of the annular air belt, except for the portion in the upper sinking trough which is hollow, the rest of the annular air belt is solid). Similarly, the right half of the annular air belt on the right side of the upper sinking trough is solid, while the left half is hollow. That is, the section of the annular air belt above the paper jamming area has an inner cavity, located on the side where the vacuum suction cups are located, and each vacuum suction cup is connected to its corresponding inner cavity. This special structure of the annular air belt satisfies both the structural strength required for a conveyor belt and the air extraction requirements of the vacuum suction cups. Furthermore, each annular air belt has a ring of synchronous internal teeth on its inner side, with these teeth positioned close to the other side of the inner edge. That is, the internal synchronous teeth are distributed along the hollow structure of the annular air belt, and the internal synchronous teeth are offset from the vacuum suction cup of the hollow structure. Correspondingly, each drive wheel is equipped with an external synchronous tooth that matches the internal synchronous teeth. The external synchronous teeth mesh with the internal synchronous teeth, and the drive wheel drives the annular air belt to rotate. There is no relative displacement between the two in time, thus avoiding slippage.

[0009] The preferred embodiment of the handwriting gesture tracking system for the intelligent learning desk in this invention is as follows: The lower surface of the flip plate is provided with four telescopic rotating components, two of which are located on the left side of the sinking groove, and the other two on the right side. Each telescopic rotating component has a paper stop at its lower end. Each paper stop swings below or outside the sinking groove via its corresponding telescopic rotating component. When the handwriting paper is moved into the sinking groove by two annular air belts, the four telescopic rotating components cooperate to lock the paper stop between the handwriting paper and the annular air belts. Simultaneously, the vacuum suction cup no longer adheres to the handwriting paper, the paper stop rises, and lifts the handwriting paper into the sinking groove, automatically storing the used handwriting paper in the sinking groove.

[0010] This invention also provides a method for recognizing handwriting gestures. Multiple sheets of writing paper are stacked in a paper jam area. The conveying unit is in its initial position, and the processing unit acquires the initial position of the right forearm using the first camera component of the recognition unit. Upon commencement of writing, the processing unit activates the vacuum unit, and a vacuum suction cup holds the topmost sheet of writing paper. When the forearm moves to the rightmost end and then returns to the leftmost end, the processing unit causes the four drive wheels of the conveying unit to rotate synchronously at a certain angle, and the two annular air belts rotate synchronously, thereby moving the writing paper forward a certain distance. The processing unit and the recognition unit continue to recognize the position of the right forearm until the tail of the writing paper moves out of the upper sinking area. At this point, the processing unit causes the four drive wheels to rotate rapidly clockwise, and the annular air belts quickly move the writing paper to the lower sinking area. The processing unit causes all vacuum suction cups to lose suction. Then, two opposing telescopic rotating components move their corresponding paper-stopping plates to the blank areas on either side of the writing paper and rise, thus lifting the tail or head of the paper. Next, two other telescopic rotating components move their corresponding paper-stopping plates quickly to the middle of the writing paper and rise. Finally, the two paper-stopping plates in the blank areas quickly move to the middle of the writing paper, separating the used writing paper from the annular air belt. The four drive wheels reverse direction, and the annular air belt returns to its initial position. Following these steps, all the writing paper is used, and the writing process is complete.

[0011] The beneficial effects of the handwriting gesture tracking system for smart study desks in this invention are as follows: 1. When copying, place the notebook on the transparent board and the copying paper below the transparent board. Compared with the existing copying stand, the distance between the copying paper and the notebook is greatly shortened and they are close to the same plane. The range of eye focusing is greatly reduced, which helps to relieve eye fatigue and makes copying healthier for the eyes.

[0012] 2. Because the distance between the copying paper and the writing book is very close, the eyes can switch back and forth between the copying paper and the writing book with a very small angle of movement. It is necessary to frequently raise and lower the head, so the neck muscles and ligaments can be in a relaxed state for a long time, and the pressure on the neck muscles and cervical spine is significantly reduced.

[0013] 3. No neck movement is required; copying and learning can be completed simply by moving the eyeballs within a small range. There is no need to reposition the gaze throughout the process, which helps maintain the best state for copying and reading, making it easier to enter a state of focus and thus improving copying efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 The three-dimensional intelligent study desk in this invention Figure 1 ; Figure 2 The three-dimensional structure of the intelligent study desk in this invention, hidden behind the desktop. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the flip plate in this invention; Figure 4 for Figure 3 A three-dimensional image; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 for Figure 3 Rear view; Figure 7 for Figure 6 A schematic diagram showing the two paper baffles facing each other on the left and right sides after they have been rotated at a certain angle; Figure 8 for Figure 6 A schematic diagram showing the other two paper baffles, which are opposite each other on the left and right, after rotating 90°; Figure 9 for Figure 8 A schematic diagram showing the two opposing paper baffles rotated to 90°. Figure 10 for Figure 9 A schematic diagram showing the hidden flip-up plate, telescopic rotating assembly, and paper stopper. Figure 11 This is a partial structural diagram of the annular air belt with added internal synchronous teeth and the drive wheel with added external synchronous teeth in this invention. Figure 1 ; Figure 12 This is a partial structural diagram of the annular air belt with added internal synchronous teeth and the drive wheel with added external synchronous teeth in this invention. Figure 2 ; Figure 13 This is a module connection diagram of the gesture tracking system in this invention.

[0016] Reference numerals: 1. Longitudinal back panel; 2. Upper shelf; 3. Middle shelf; 4. Eye-protection lamp; 5. Smart speaker; 6. Second camera assembly; 7. Flip panel; 8. Control panel; 9. Upper recess; 10. Lower recess; 11. Step; 12. Desktop; 13. U-shaped enclosure; 14. Writing paper; 15. Annular air belt; 16. Drive wheel; 17. Arc-shaped channel; 18. Paper feeding channel; 19. Vacuum suction cup; 20. Inner cavity; 21. Synchronous internal teeth; 22. Tube winder; 23. Hose; 24. First camera assembly; 25. Pressure array assembly; 26. Telescopic rotation assembly; 27. Paper stop; 28. Hinge; 29. ​​Synchronous external teeth; Detailed Implementation

[0017] In view of the shortcomings of the prior art, the inventors of this invention, through long-term research and extensive practice, have proposed the technical solution of this invention. The technical solution, its implementation process, and principles will be further explained below with reference to the accompanying drawings and specific implementation examples in the embodiments of this application.

[0018] like Figure 1 and Figure 2 As shown, this embodiment provides a smart study desk, including a height-adjustable desk body. A longitudinal back panel 1 is located behind the desktop 12 near the height-adjustable desk body. An upper panel 2 and a middle panel 3 are respectively located on the upper and middle parts of the longitudinal back panel 1. The upper panel 2 is equipped with an eye-protection lamp 4 for lighting, and the middle panel 3 is equipped with a smart speaker 5 and a second camera assembly 6. The second camera assembly 6 is a depth camera. The depth camera uses structured light, time-of-flight (TOF), and binocular vision technology to additionally acquire depth data (i.e., the distance from the object to the camera) for each point in the image. Combined with two-dimensional coordinates, it generates three-dimensional spatial coordinates, achieving three-dimensional reconstruction of the scene. This is more suitable for gesture and posture capture. The principle is to use a skeleton-embedded surface fusion method to achieve real-time tracking and reconstruction of the non-rigid surface motion of the human body, thereby capturing all detailed changes in the right forearm, palm, and sitting posture. A flip panel 7 and a control panel 8 are embedded in the desktop 12. The control panel 8 includes a power switch, socket holes, USB holes, and a Type-C interface. The flip panel 7 is located at the lower right corner of the desktop 12. The front edge of the flip panel 7 is flush with the front edge of the desktop 12, and the right edge is flush with the right edge. The flip panel 7 is connected to the desktop 12 via a hinge 28. The hinge 28 allows the rear edge of the flip panel 7 to be tilted upwards, thus tilting the flip panel 7 forward, facilitating drawing, reading without bending over, etc. The control panel 8 is electrically connected to the lights and the smart speaker 5, used to control the lights' on / off state and to power the smart speaker 5.

[0019] like Figure 3 and Figure 4 As shown, to improve the efficiency of copying and learning while also paying attention to postural health during the copying process, this embodiment also provides a copying gesture tracking system for a smart learning desk. This system includes an upper recess 9 and a lower recess 10 respectively located above and below the flip-up panel 7. The upper recess 9 has a suitable transparent panel (not shown in the figure). The upper edge of the upper recess 9 has a recessed step 11 adapted to the transparent panel. The transparent panel is placed on the step 11, with its top flush with the desktop 12. During copying and learning, the book is placed on the transparent panel, and the copying paper 14 inside the upper recess 9 can be clearly seen through the transparent panel. The upper recess 9 also has a paper-holding area adapted to the existing A4 paper size. Behind the paper-holding area is a U-shaped enclosure 13, allowing multiple A4 sheets to be stacked.

[0020] like Figure 6 As shown, the gesture tracking system also includes a conveying unit, which is used to move the writing paper 14 and turn pages. It can automatically move the writing paper 14 forward according to the writing speed, and automatically turn to the next page after a single page of writing paper 14 is completed. The conveying unit includes two annular air belts 15 symmetrically distributed on the left and right sides of the upper sink 9, and two drive wheels 16 corresponding to each annular air belt 15. That is, each annular air belt 15 is driven by two drive wheels 16, for a total of four drive wheels 16. The two annular air belts 15 are located near the left and right sides of the paper jam area, respectively. The left side of the left annular air belt 15 coincides with the blank area on the left side of the paper jam area, and the right side of the right annular air belt 15 coincides with the blank area on the right side of the paper jam area. Typically, blank areas are reserved on all four sides of the writing paper 14. The annular air belts 15 are directly opposite these blank areas to avoid obscuring the text area in the middle of the writing paper 14. However, each annular air belt 15 has a reserved space at the edge of its corresponding blank area. The specific installation methods for the drive wheel 16 and the annular air belt 15 are as follows: Both the front and rear side walls of the upper sinking trough 9 are provided with arc-shaped channels 17 for connecting to the lower sinking trough 10, and each arc-shaped channel 17 is rotatably connected to a drive wheel 16; each annular air belt 15 is fitted onto two opposing drive wheels 16, and the annular air belt 15 shuttles between the upper sinking trough 9 and the lower sinking trough 10 by the synchronous rotation of the two drive wheels 16. The specific structure of the two drive wheels 16 is as follows: a motor is installed at the center of the wheel, and the two form an integrated structure, which is particularly suitable for installing in the narrow arc-shaped channels 17. In addition, the two arc-shaped channels 17 on the front side wall are connected by a paper feeding channel 18, which extends to both sides to provide a sufficiently wide lateral space for the writing paper 14.

[0021] like Figure 4 , Figure 5 and Figure 10As shown, each annular air band 15 has a vacuum suction cup 19 on its inner side that communicates with the inner cavity 20 of the annular air band 15, and the vacuum suction cup 19 is staggered with the corresponding drive wheel 16. Specifically, each annular air band 15 has five vacuum suction cups 19, but not limited to five. All the vacuum suction cups 19 are distributed along the length of the annular air band 15 on one side of the inner side of the annular air band 15, and all the vacuum suction cups 19 are located above the paper jam area. That is, at the initial position of the annular air band 15, only the lower surface of the upper part of the annular air band 15 has five vacuum suction cups 19, while the lower part of the annular air band 15 and the annular air bands 15 located in the arc-shaped channels 17 on both sides do not have vacuum suction cups 19. The annular air belt 15 is divided into a left and a right half along its middle. The left half of the annular air belt 15 located on the left side of the upper sink 9 is a solid structure, while the right half is a hollow structure. The hollow structure forms an inner cavity 20, and the length of the hollow structure is no more than half the total length of the annular air belt 15 (at the initial position of the annular air belt 15, except for the portion located in the upper sink 9 which is hollow, the rest of the annular air belt 15 is solid). Similarly, the right half of the annular air belt 15 located on the right side of the upper sink 9 is a solid structure, while the left half is hollow. That is, only the upper part of the annular air belt 15 is half hollow and half solid, and the inner cavity 20 is located on the side where the vacuum suction cups 19 are located, with each vacuum suction cup 19 connected to its corresponding inner cavity 20. This special structure of the annular air belt 15 satisfies both the structural strength required for a conveyor belt and the air extraction requirements of the vacuum suction cups 19. Furthermore, as... Figure 11 and Figure 12 As shown, each annular air band 15 has a ring of internal synchronous teeth 21 on its inner side, with the internal synchronous teeth 21 located near the other side of the inner side. That is, the internal synchronous teeth 21 are distributed along the hollow structure of the annular air band 15, and the internal synchronous teeth 21 are offset from the vacuum suction cup 19 of the hollow structure. Correspondingly, each drive wheel 16 has external synchronous teeth 29 that are adapted to the internal synchronous teeth 21. The external synchronous teeth 29 mesh with the internal synchronous teeth 21, and the drive wheel 16 drives the annular air band 15 to rotate. There is no relative displacement between the two in time, thus avoiding slippage.

[0022] The gesture tracking system also includes a vacuum unit, which comprises a tube winder 22, a hose 23, and a vacuum pump. The vacuum pump is concealed within the flip plate 7 and is not exposed. A tube winder 22 is rotatably connected within each arc-shaped channel 17. The tube winder 22 uses a centrally mounted motor, which is integrated with the center of the tube winder 22. The central shaft of the central motor is fixed to the side wall of the arc-shaped channel 17. When the central motor is powered on, the tube winder 22 rotates synchronously forward or backward. Each tube winder 22 winds a hose 23, and the beginning of each hose 23 is connected to the corresponding vacuum pump. The ends of the hoses 23 of the two tube winders 22 located on the front sidewall extend along the upper surface of the corresponding annular air band 15 to the rear sidewall, and the ends of the hoses 23 are connected to the air pipe. The ends of the hoses 23 of the two tube winders 22 located on the rear sidewall extend along the upper surface of the corresponding annular air band 15 to the front sidewall, and the ends of the hoses 23 are connected to the air pipe. Each annular air belt 15 is evacuated by two hoses 23. At the initial position of the annular air belt 15, the upper surface of the upper part of the annular air belt 15 is connected to the two hoses 23, and the ends of the two hoses 23 are close to the front and rear of the upper sinking tank 9, respectively. When the annular air belt 15 rotates, the two winding devices 22 rotate in reverse synchronously. One winding device 22 retracts the hose 23, and the other winding device 22 releases the hose 23. The released hose 23 moves with the annular air belt 15 to the lower sinking tank 10, thus satisfying the rotation requirements of the annular air belt 15.

[0023] The gesture tracking system also includes a recognition unit and a processing unit. The recognition unit includes a first camera assembly 24 installed in the upper recess 9, with its camera end facing the transparent plate. The first camera assembly 24, like the second camera assembly, uses a depth camera to capture hand movements during the copying process at close range, specifically the left-right movement of the right forearm. Using dual cameras, the upper and lower parts of the transparent plate accurately capture the right hand movement. Following conventional writing habits, writing is done from left to right. The second camera assembly captures the movement of the right forearm and fingers, while the first camera assembly 24 captures the movement of the right forearm (as the copybook obscures the palm). The processing unit is an embedded microprocessor module with a certain computing power (such as a high-end ARM-based chip or edge computing device), responsible for running visual algorithms, processing sensor data in real time, and coordinating the entire system's operation. The sensors include the first camera assembly 24 and the second camera assembly, as well as a pressure array assembly 25 installed on the upper surface of the flip plate 7. The pressure array assembly 25 is located on the right side of the transparent plate and is used to further capture the movement of the right forearm. Therefore, the processing unit is electrically connected to the transmission unit, vacuum unit, identification unit, pressure array assembly 25, second camera assembly, and control panel 8, respectively. The power supply of the control panel 8 also supplies power to the processing unit, and the driving module of the processing unit is used for power supply and signal interaction with the transmission unit, vacuum unit, identification unit, pressure array assembly 25, and second camera assembly.

[0024] To facilitate multi-page copying and learning, eliminating the need for manual page turning, this embodiment features four telescopic rotating components 26 on the lower surface of the flip plate 7. Two of these components are located on the left side of the sink trough 10, and the other two on the right side. Each telescopic rotating component 26 has a paper stop 27 at its lower end. Each paper stop 27 swings below or outside the sink trough 10 via its corresponding telescopic rotating component 26. Each telescopic rotating component 26 consists of a telescopic motor and a rotating motor. The telescopic shaft of the telescopic motor is coaxially fixed to the housing of the rotating motor, and the rotating shaft of the rotating motor is fixed to the paper stop 27, which is perpendicular to the rotating shaft. The cylinder of the telescopic motor is fixed to the lower surface of the flip plate 7. The telescopic motor drives the rotating motor and the paper stop 27 to move up and down synchronously, while the rotating motor drives the paper stop 27 to swing. The rotating motor and the telescopic motor do not interfere with each other. After the writing paper 14 is moved to the sink 10 by the two annular air belts 15, the four telescopic rotating components 26 cooperate to make the paper stop 27 lock between the writing paper 14 and the annular air belts 15. At the same time, the vacuum suction cup 19 no longer adsorbs the writing paper 14, the paper stop 27 rises and lifts the writing paper 14 into the sink 10, and the used writing paper 14 is automatically stored in the sink 10.

[0025] This embodiment also provides a method for recognizing handwriting gestures, applied to the aforementioned smart learning desk, with the following steps: First, multiple sheets of A4 writing paper 14 are stacked in the paper jam area. The processing unit puts the conveying unit and the four telescopic rotating components 26 into their initial positions. The initial positions of the four telescopic rotating components 26 are that the four paper stoppers 27 are located on both sides of the sink trough 10.

[0026] Then, the processing unit obtains the initial position of the right forearm through the first camera component 24 of the recognition unit, the initial position of the right forearm and the gesture through the second camera component, and the initial position of the right forearm through the pressure array component 25. The processing unit combines "dual cameras + pressure array component 25" with edge computing to achieve full-dimensional tracking of the right arm and right gesture. The core is to quantify the posture parameters with 3D coordinates and combine multimodal feedback to achieve a closed loop of "real-time monitoring - data review", forming a complete full-dimensional right hand recognition unit.

[0027] The copying can be started via the copying button on the control panel 8 or by sending a voice control command to the smart speaker 5. After the copying start signal is sent to the processing unit, the copying begins. The processing unit makes the vacuum pump of the vacuum unit work. The vacuum pump draws a vacuum through the hose 23 to the vacuum suction cup 19. The vacuum suction cup 19 picks up the top first page of copying paper 14. Throughout the entire copying process, the right-hand recognition unit operates continuously. When the forearm moves to the far right and then returns to the far left, the processing unit causes the four drive wheels 16 of the transmission unit to rotate synchronously at a certain angle, and the two annular air belts 15 to rotate synchronously, thereby moving the copying paper 14 forward a certain distance. This ensures that the area currently being copied on the copying paper 14 is always displayed in the adjacent area above the notebook. The copying paper 14 is held by the vacuum suction cup 19, reducing the distance between the copying paper 14 and the notebook. The transparent plate is lowered by the sunken step 11, further reducing the distance between the copying paper 14 and the notebook. The copying paper 14 and the notebook are close to the same plane. The user's gaze switches back and forth between the copying paper 14 and the notebook, with minimal eye focusing, which is negligible. Moreover, there is no need to rotate the eyeballs at large angles, thus greatly relieving eye fatigue and making copying healthier for the eyes. The processing unit continuously identifies the position of the right hand (including the right forearm and right palm) through the right hand recognition unit until the tail of the writing paper 14 is removed from the upper sink 9 area. The processing unit then causes the four drive wheels 16 to rotate rapidly in the forward direction, and the annular air belt 15 quickly moves the writing paper 14 to the lower sink 10. The processing unit will then execute the following instructions to collect the used writing paper 14: The processing unit causes all vacuum suction cups 19 to lose suction, and the writing paper 14 is placed on the ten vacuum suction cups 19, i.e., on the two annular air belts 15. Then, the two opposing telescopic rotating components 26 drive the ends of the corresponding paper-stopping plates 27 to swing to the reserved positions on both sides of the blank area of ​​the writing paper 14, with a swing angle of 15°-25°. The two telescopic rotating components 26 then drive the paper-stopping plates to rise, thereby lifting the tail or head of the writing paper 14. Figure 6 and Figure 7 As shown. After the tail or head of the writing paper 14 is lifted, the gap between the writing paper 14 and the suction cup increases significantly. The other two telescopic rotating components 26 drive the corresponding paper-stopping plates 27 to swing rapidly from this gap to the middle of the writing paper 14 and rise, with a swing angle of 90°. Figure 8 As shown. Finally, the two paper-stopping pieces 27 located in the blank area swing quickly to the middle of the writing paper 14, that is, swing to 90°, as shown. Figure 9 As shown. This separates the used writing paper 14 from the annular air belt 15, and the used writing paper rises and is stored in the sink trough 10 (this function can only be used when the flip plate 7 is in the horizontal position). The four drive wheels 16 reverse, and the annular air belt 15 returns to its initial position.

[0028] Finally, following the steps above, use up all the copying paper 14, and the copying is complete. If you need to pause or cancel the copying process, you can use the pause or cancel button on the control panel 8, or issue a voice control command to the smart speaker 5 to pause or cancel the process, and the processing unit will stop all operations.

[0029] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. It should not be considered that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A handwriting gesture tracking system for a smart study desk, characterized in that: Includes a flip panel, which is installed on the desktop of the smart study desk. The flip panel has an upper recess and a lower recess, respectively, and the upper recess has a matching transparent panel. The system includes a transmission unit, which comprises two annular air belts symmetrically distributed on the left and right sides of the upper sinking trough, and two drive wheels corresponding to each annular air belt. The front and rear side walls of the upper sinking trough are provided with arc-shaped channels for connecting to the lower sinking trough, and each arc-shaped channel is rotatably connected to a drive wheel. Each annular air belt is fitted onto two opposing drive wheels, and the annular air belt shuttles between the upper and lower sinking troughs by the synchronous rotation of the two drive wheels. The two arc-shaped channels on the front sidewall are connected by a paper feeding channel; each annular air belt has a vacuum suction cup connected to the inner cavity of the annular air belt, and the vacuum suction cups are staggered with the corresponding drive wheels. The system includes a vacuum unit, which comprises a tube winder, a hose, and a vacuum pump. Each arc-shaped channel contains a rotatably connected tube winder, each winder winds a hose, and the beginning of each hose is connected to the corresponding vacuum pump. The ends of the hoses of the two winders located on the front sidewall extend along the upper surface of the corresponding annular air band to the rear sidewall, and the ends of the hoses are connected to the air tube. The ends of the hoses of the two winders located on the rear sidewall extend along the upper surface of the corresponding annular air band to the front sidewall, and the ends of the hoses are connected to the air tube. It includes an identification unit, which includes a first camera component installed in the sinking tank, with the camera end of the first camera component facing the transparent plate; It includes a processing unit; the processing unit is electrically connected to the transmission unit, the vacuum unit and the identification unit respectively.

2. The handwriting gesture tracking system for a smart study desk according to claim 1, characterized in that: The upper sink is provided with a paper jamming area, and two annular air bands are located near the left and right sides of the paper jamming area, respectively.

3. The handwriting gesture tracking system for a smart learning desk according to claim 2, characterized in that: Each annular air belt has multiple vacuum suction cups, all of which are distributed along the length of the annular air belt on one side of the inner side of the annular air belt, and all of the vacuum suction cups are located above the paper jam area; each annular air belt has a ring of synchronous internal teeth on its inner side, and the synchronous internal teeth are close to the other side of the inner side; each drive wheel has synchronous external teeth that mesh with the synchronous internal teeth.

4. The handwriting gesture tracking system for a smart study desk according to claim 3, characterized in that: Each of the annular air zones above the paper jam area has an inner cavity, and the inner cavity is located on the side where the vacuum suction cup is located. Each vacuum suction cup is connected to the corresponding inner cavity.

5. A handwriting gesture tracking system for a smart learning desk according to claim 4, characterized in that: The lower surface of the flip plate is provided with four telescopic rotating components, two of which are located on the left side of the sinking trough and the other two are located on the right side of the sinking trough. Each telescopic rotating component has a paper stop at its lower end, and each paper stop swings to the bottom of the sinking trough or to the outside of the sinking trough through the corresponding telescopic rotating component.

6. A handwriting gesture tracking system for a smart learning desk according to claim 5, characterized in that: The upper surface of the flip plate is provided with a pressure array assembly electrically connected to the processing unit, and the pressure array assembly is located on the right side of the transparent plate.

7. A handwriting gesture tracking system for a smart study desk according to claim 6, characterized in that: The method for recognizing handwriting gestures includes the following steps: S1. Multiple sheets of writing paper are stacked in the paper jam area. The conveying unit is in the initial position. The processing unit obtains the initial position of the writing right forearm through the first camera component of the recognition unit. S2. Copying begins. The processing unit activates the vacuum unit, and the vacuum suction cup holds the topmost first page of copying paper. S3. When the forearm moves to the rightmost end and then returns to the leftmost end, the processing unit causes the four drive wheels of the conveying unit to rotate synchronously at a certain angle, and the two annular air belts to rotate synchronously, thereby driving the writing paper to move forward a certain distance. S4. Repeat S3 until the tail of the writing paper moves out of the upper sinking area. The processing unit makes the four drive wheels rotate quickly in the forward direction, and the annular air belt quickly pulls the writing paper to the lower sinking tank. S5. The processing unit causes all vacuum suction cups to lose suction, and then the two telescopic rotating components on the left and right sides drive the corresponding paper-blocking plates to swing to the blank areas on both sides of the writing paper and rise, thereby lifting the tail or head of the writing paper. Then, the other two telescopic rotating components drive the corresponding paper-blocking plates to swing quickly to the middle of the writing paper and rise. Finally, the two paper-blocking plates in the blank area swing quickly to the middle of the writing paper, thereby separating the used writing paper from the annular air belt. The four drive wheels reverse, and the annular air belt returns to the initial position. S6. Repeat S3-S5 until the copying is complete.

8. A smart study desk, characterized in that: The invention includes a height-adjustable desk body and a gesture tracking system as described in any one of claims 1-6. The desktop of the height-adjustable desk body is provided with a control panel, and a longitudinal back panel is provided near the rear of the desktop. The upper part of the longitudinal back panel is equipped with a lamp, and the middle part is provided with a smart speaker and a second camera assembly. The flip panel of the gesture tracking system is embedded in the front of the desktop. The control panel is electrically connected to the processing unit, the lamp, and the smart speaker.

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