Luminous adjusting felt for calligraphy practice and adjusting method of felt

Abstract

The invention discloses a light-emitting adjusting felt for calligraphy practice and a felt adjusting method, a device comprises a felt, a light-emitting layer, a light-emitting assembly, a splicing piece and a hinge assembly, the light-emitting layer is attached to the upper layer of the felt, the light-emitting assembly is arranged in the light-emitting layer so as to display a light source through the light-emitting layer, and the splicing piece is arranged on the splicing piece. The splicing pieces are arranged on the lower layer of the felt in an attached mode, the hinging assemblies are connected between every two adjacent splicing pieces to achieve hinging, through cooperative work of a mobile phone app and the felt, light combination of different layouts in the light-emitting layer is utilized, and the light-emitting effect of the felt is improved. Diversified adjustment of calligraphy practice auxiliary functions is realized. Through the functions of presetting the size of the auxiliary frame, displaying the auxiliary light with different colors and intensities, adjusting the light in real time according to the writing condition, correcting after the paper is moved and the like, accurate and convenient auxiliary support is provided for a calligraphy practicer, and the calligraphy practicing effect is effectively improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of calligraphy practice, and particularly relates to a luminous adjustable felt for calligraphy practice and an adjustment method for the felt. Background Art

[0002] Currently, calligraphy practice usually relies on fixed "rice" grids, square grids, etc. of printed or hand-drawn auxiliary frame lines. However, this static structure is difficult to meet the personalized needs of different writers. In addition, during the process of practicing calligraphy, if the paper shifts, the traditional fixed frame lines cannot be automatically adjusted, affecting the calligraphy practice effect.

[0003] Chinese Patent with application number 201910021169.8 discloses a felt for calligraphy copying, including a felt body. The length of the felt body is not greater than 180 cm, and the width of the felt body is not greater than 97 cm. The felt body is made of a mixture of wool and fireproof and waterproof fibers. The upper surface of the felt body is provided with a calligraphy collection of inscriptions by hot stamping. The felt for calligraphy copying in the embodiment of the present invention has the characteristics of simple operation, economy, and environmental protection. At the same time, the felt for calligraphy copying in the embodiment of the present invention also has the characteristics of being strong, durable, easy to carry, and reusable. The felt disclosed in this patent can only copy through fixed hot-stamped fonts, and the size is fixed, and the adjustment function cannot be realized.

[0004] Therefore, there is an urgent need in the market for a calligraphy practice felt that can intelligently adjust the auxiliary frame, adapt to different font sizes, and can automatically correct. Summary of the Invention

[0005] The purpose of the present invention is to provide a luminous adjustable felt for calligraphy practice and a method. The technical problem to be solved is that most of the calligraphy practice felts in the prior art are fixed "rice" grid auxiliary wire frames, and during the calligraphy practice process, if the paper shifts, the traditional fixed frame lines cannot be automatically adjusted.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: In the first aspect, the present invention provides a luminous adjustable felt for calligraphy practice, including a felt, a luminous layer, a luminous component, splicing pieces, and hinge components. The luminous layer is attached to the upper layer of the felt, the luminous component is arranged in the luminous layer to realize the appearance of the light source through the luminous layer, the splicing pieces are several and are attached to the lower layer of the felt, and the hinge components are several, and each two adjacent splicing pieces are connected with a hinge component to realize hinging.

[0007] Through the collaborative work of the mobile application (app) and the felt, and by using different layouts of light combinations in the light-emitting layer, the diverse adjustment of the auxiliary function for calligraphy practice is achieved. Through functions such as presetting the size of the auxiliary frame, displaying auxiliary lights of different colors and intensities, adjusting the lights in real time according to the writing situation, and correcting after the paper moves, precise and convenient auxiliary support is provided for calligraphy practitioners, effectively improving the effect of calligraphy practice.

[0008] Optionally, the light-emitting component includes a plurality of auxiliary lights and border lights. The light-emitting layer is arranged in a rectangular array with a plurality of lamp mounting holes. The auxiliary lights are fixedly arranged at the centers of the lamp mounting holes, and at least four border lights are arranged in a circumferential array in each lamp mounting hole to surround the outer periphery of the auxiliary light. By setting the auxiliary lights, the auxiliary lights in multiple equal mounting holes are lit to form a "rice" character structure. By setting the auxiliary lights at the center positions of each lamp mounting hole, a "rice" character structure is formed after controlling the lighting of multiple auxiliary lights, providing an auxiliary effect for the writer during use. At the same time, a plurality of border lights are set, and by selectively opening and closing, lights are lit on the outer periphery of the "rice" character structure to form an auxiliary frame, providing a size hint for the writing area.

[0009] Optionally, the hinged component includes a sphere, a rotating arc plate, and a rotating shaft. The sphere and the rotating arc plate are correspondingly arranged on the opposite sides of every two adjacent splicing pieces. The rotating shaft is arranged at both ends of the rotating arc plate and is hinged to the sphere. By setting the sphere and the rotating arc, the adjacent two splicing pieces can rotate by fitting the sphere through the rotating arc plate, which is convenient for storage.

[0010] Optionally, spherical grooves are provided on the sides of every two adjacent splicing pieces. The sphere and the rotating arc plate are arranged in the spherical grooves. The sphere is provided with a first fixing rod and is fixed to the side of one splicing piece, and the rotating arc plate is provided with a second fixing rod and is fixed to the side of the other splicing piece. By setting the spherical grooves, the sphere and the rotating arc plate are hidden in the spherical grooves, reducing the volume and being convenient for placement.

[0011] Optionally, the adjustable felt further includes magnetic attraction blocks. A plurality of fixing holes are provided at the corners of the light-emitting layer. The magnetic attraction blocks are magnetically connected to the inner walls of the fixing holes. By setting the connection between the magnetic attraction blocks and the fixing holes, when the user places the rice paper on the light-emitting layer during use and then places the magnetic attraction blocks on the corresponding fixing holes, the rice paper is fixed under the action of magnetic attraction, reducing the movement of the position of the rice paper and causing non-standard calligraphy writing.

[0012] In a second aspect, the present invention provides a method for adjusting the felt of the light-emitting adjustable felt for calligraphy practice according to any one of the first aspects, including: N×M lamp mounting holes are provided on the surface of the felt, and each of the lamp mounting holes includes a border lamp and an auxiliary lamp, and an auxiliary frame for assisting calligraphy practice is formed by adjusting the light; The area size, light color and brightness of the auxiliary frame are set through the mobile phone app to match the set calligraphy practice area size; The actual font size of the writing is detected and collected through the sensor , combined with the image recognition module in the mobile phone app to analyze the writing picture, and calculate the ratio of the actual font size to the preset font size If , the font is too large, and at this time the auxiliary frame is automatically enlarged; if , the font is too small, and at this time the auxiliary frame is automatically reduced; The movement of the paper is monitored through the optical flow detection algorithm, and the position of the light is adjusted to realign the auxiliary frame; The ambient brightness is detected through the light sensor, and the light brightness and color contrast are adjusted.

[0013] Optionally, the forming of the auxiliary frame for assisting calligraphy practice by adjusting the light specifically includes: The auxiliary lamp is arranged at the center of each lamp mounting hole, at least four evenly distributed border lamps are arranged on the outer periphery of each auxiliary lamp, and each small lamp can be controlled to change into at least three colors of red, yellow and blue. Different colors and intensities of lights are set for the auxiliary lamp and the border lamp to distinguish the auxiliary effect.

[0014] Optionally, the setting of the area size, light color and brightness of the auxiliary frame through the mobile phone app to match the set calligraphy practice area size specifically includes: According to the preset auxiliary frame size parameters, calculate the specific row and column range to be lit in the N×M lamp mounting holes, and control the corresponding auxiliary lamps and border lamps to be lit to form an auxiliary frame matching the set area size; By adjusting the driving signal of the LED lamp, the light presents the color selected by the user; According to the received brightness parameter, using PWM (pulse width modulation) technology, the brightness of the light is precisely adjusted by controlling the PWM controller integrated on the circuit board.

[0015] Optionally, the analysis of the writing picture in combination with the image recognition module in the mobile phone app specifically includes: Convert the color writing picture image into a grayscale image, further convert the grayscale image into a binary image, and remove the noise interference in the image; Perform text region detection, font size analysis and font direction judgment according to the deep learning algorithm.

[0016] Optionally, the movement of the paper is monitored by an optical flow detection algorithm, and the position of the light is adjusted to realign the auxiliary frame, which specifically includes: The optical flow detection algorithm is used to monitor the change in the position of the paper in real time. After each detection of the change in the position of the paper, the displacement vector is calculated and compared with a preset threshold. If the threshold is exceeded, the on / off of the lights at different positions is automatically controlled to simulate the movement of the auxiliary frame and make it realign with the writing area on the paper.

[0017] The present invention has the following beneficial effects compared with the prior art: 1. Through the collaborative work of the mobile application (app) and the felt in the calligraphy practice luminous adjustment felt of the present invention, and by using the light combinations with different layouts in the luminous layer, the diversified adjustment of the calligraphy practice auxiliary function is realized. Through functions such as presetting the size of the auxiliary frame, displaying auxiliary lights of different colors and intensities, adjusting the lights in real time according to the writing situation, and correcting after the paper moves, precise and convenient auxiliary support is provided for calligraphy practitioners, effectively improving the calligraphy practice effect.

[0018] 2. In the calligraphy practice luminous adjustment felt of the present invention, auxiliary lights are arranged at the center positions of each lamp mounting hole. After multiple auxiliary lights are controlled to be lit, a "rice" - shaped structure or a "square" - shaped structure, or horizontal and vertical long - line grids are formed, which provide an auxiliary effect for the writer during use. At the same time, multiple border lights are provided, and the lights can be selectively turned on and off to form an auxiliary frame by lighting on the periphery of the "rice" - shaped structure, etc., to provide a size hint for the writing area.

[0019] 3. In the calligraphy practice luminous adjustment felt of the present invention, by setting a sphere and a rotating arc, the adjacent two splicing pieces are attached to the sphere through the rotating arc piece to realize rotation, which is convenient for storage. By setting a magnetic attraction block connected to a fixing hole, after the user places the rice paper on the luminous layer during use, the magnetic attraction block is placed on the corresponding fixing hole, and under the action of magnetic attraction, the fixation of the rice paper is realized, reducing the movement of the rice paper position and causing non - standard calligraphy writing.

[0020] 4. The felt adjustment method of the calligraphy practice luminous adjustment felt of the present invention forms an auxiliary frame by adjusting the lights, and uses lights of different colors and intensities to distinguish the auxiliary effects, which can provide an intuitive reference for the writing area for the writer, help them better plan the font layout, and standardize the writing range. Automatically adjust the size of the auxiliary frame according to the actual font size, so that the writer can intuitively compare the font with the auxiliary frame and adjust the writing in time, which is beneficial to mastering the appropriate font size. Description of the Drawings

[0021] Figure 1 is a structural schematic diagram of the present invention; Figure 2 is of the present invention Figure 1 magnified schematic diagram of the structure at A in Figure 3 Schematic diagram of the structure of two adjacent splicing pieces of the present invention; Figure 4 of the present invention Figure 3 Enlarged schematic diagram of the structure at B in

[0022] In the figure: 1 - felt, 2 - light-emitting layer, 3 - lamp mounting hole, 4 - auxiliary lamp, 5 - border lamp, 6 - magnetic attraction block, 7 - fixing hole, 8 - splicing piece, 9 - hinge assembly, 91 - sphere, 92 - first fixing rod, 93 - rotating arc piece, 94 - second fixing rod, 95 - rotating shaft, 96 - spherical groove. Specific implementation mode

[0023] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and cannot be used to limit the protection scope of the present invention. Embodiment 1

[0024] As Figures 1 to 4 shown, a light-emitting adjustable felt for calligraphy practice is provided, including a felt 1, a light-emitting layer 2, a light-emitting component, a magnetic attraction block 6, a splicing piece 8 and a hinge assembly 9. Among them, the splicing pieces 8 in this embodiment are several and are arranged in a fitting manner below the felt 1. Among them, the light-emitting layer 2 is arranged in a fitting manner above the felt 1. The light-emitting component in this embodiment is correspondingly arranged on the light-emitting layer 2. The hinge assemblies 9 in this embodiment are several, and each two adjacent splicing pieces 8 are connected with a hinge assembly 9 to realize hinging. In this embodiment, fixing blocks 7 adapted to the magnetic attraction blocks 6 are opened at the edge corners of the light-emitting layer 2, and the inner wall of the fixing hole 7 is magnetically connected with the magnetic attraction block 6.

[0025] When in use, place the rice paper to be written on above the light-emitting layer 2, place the magnetic attraction block 6 corresponding to the fixing hole 7 above the rice paper to fix the rice paper, and by turning on the light-emitting component, the light passes through the rice paper to form a frame for assisting calligraphy practice, improving the calligraphy practice effect of the user.

[0026] Refer to Figure 2 shown, in this embodiment, the light-emitting component includes an auxiliary lamp 4 and a border lamp 5. Among them, the auxiliary lamp 4 and the border lamp 5 are also several. In this embodiment, a plurality of lamp mounting holes 3 in a rectangular array are opened on the light-emitting layer 2. Among them, the lamp mounting holes 3 are preferably circular. An auxiliary lamp 4 is fixed at the center of each lamp mounting hole 3, and four border lamps 5 are uniformly distributed and fixed on the outer periphery of each auxiliary lamp 4.

[0027] It should be noted that the inner wall of the lamp mounting hole 3 in this embodiment can also be made of magnetic material. In order to adapt to the fixation of rice paper of different sizes, magnetic materials can be provided on the inner walls of the lamp mounting holes 3 at different positions, such as for lamp mounting holes 3 with sizes of 5x5, 10x10, 20x20, 40x40, etc.

[0028] During use, place the rice paper on the light-emitting layer 2. According to the size of the rice paper, place the magnetic attraction block 6 above the lamp mounting hole 3 or the fixing hole 7. Under the magnetic action, the magnetic attraction block 6 fixes the rice paper, reducing the movement of the rice paper during calligraphy writing. And by adjusting the opening and closing of the auxiliary lamp 4 in the lamp mounting hole 3, multiple auxiliary lamps 4 are constructed into a "rice" character structure, which plays an auxiliary role in calligraphy writing. At the same time, by controlling the opening and closing of several border lamps 5, a closed frame-shaped light belt is constructed above the "rice" character structure, so as to realize that the "rice" character frame for multiple auxiliary calligraphy continuous writing is displayed through the rice paper, improving the effect of calligraphy practice.

[0029] Reference Figure 3 and Figure 4 As shown in the figure, in this embodiment, the hinge assembly 9 includes a sphere 91 and a rotating arc plate 93. In this embodiment, spherical grooves 96 are provided at the side connection parts of every two adjacent splicing pieces 8. One of the two adjacent splicing pieces 8 is provided with a sphere 91, and the other is provided with a rotating arc plate 93. In this embodiment, the sphere 91 is fixed by a first fixing rod 92, and the rotating arc plate 93 is fixed by a second fixing rod 94. In this embodiment, the rotating arc plate 93 slides on the outer surface of the ball head 91, and both ends of the rotating arc plate 93 are movably connected to the sphere 91 through a rotating shaft 95.

[0030] During use, the user lays several splicing pieces 8 flat on the desktop. Through the provided spherical grooves 96, the sphere 91 and the rotating arc plate 93 are hidden in the spherical grooves 96. When laying flat for use, it will not cause the light-emitting layer 2 to be uneven. And by using the hinge connection between the sphere 91 and the rotating arc plate 93, the device can be folded in multiple directions, which is convenient for storage and carrying and occupies a small space. Embodiment 2

[0031] As Figures 1 to 4 shown, on the basis of Embodiment 1, this embodiment provides a method for adjusting a calligraphy practice light-emitting adjustable felt, including: Initialization of the light matrix: Set N×M lamp mounting holes 3 on the surface of the felt 1, and each lamp mounting hole 3 includes a border lamp 5 and an auxiliary lamp 4; User-defined setting of the auxiliary frame: Set the area size, light color and brightness of the auxiliary frame through the mobile phone app, and adjust the light array to match the set parameters; Real-time writing detection and dynamic adjustment: Detect and collect the writing trajectory through sensors, calculate the font size, and perform analysis and calculation based on the size of the set calligraphy practice area to automatically adjust the size of the auxiliary frame; Paper position detection and correction: Monitor the movement of the paper through the optical flow detection algorithm and adjust the position of the light to realign the auxiliary frame; Ambient light adaptive adjustment: Detect the ambient brightness through the light sensor and adjust the light brightness and color contrast.

[0032] In this embodiment, high-brightness and low-power LED lights are preferably selected as the border lights 5 and auxiliary lights 4, arranged in the form of an N×M matrix inside the lamp mounting holes 3, and each LED light is connected through a flexible circuit board to ensure the stability and reliability of the circuit. In this embodiment, a lighting control chip (LED driver module) in the prior art is preferably used to independently control the brightness, color, and on / off state of each lighting unit.

[0033] During use, the auxiliary lights 4 are arranged at the centers of each lamp mounting hole 3. At least four evenly distributed border lights 5 are arranged on the outer periphery of each auxiliary light 4, and each small light can be controlled to change into at least three colors: red, yellow, and blue. By setting the auxiliary lights 4 and border lights 5 to lights of different colors and intensities to distinguish the auxiliary effects, each 3×3, 5×5, 7×7... auxiliary lights 4 and border lights 5 form a standard "cross" structure.

[0034] In this embodiment, it is preferably to establish a communication connection with the control circuit board through Bluetooth or Wi-Fi to achieve data transmission and interaction. The parameters set by the user on the mobile phone app can be sent to the control circuit board in real time, and at the same time, the control circuit board feeds back the data collected by the sensors to the app.

[0035] In this embodiment, the user sets the area size, light color, and brightness of the auxiliary frame through the mobile phone App. The light color is achieved by controlling the driving signal of the LED lights through a lighting control chip (LED driver module) in the prior art, and the brightness is adjusted precisely using PWM (pulse width modulation) technology through a PWM controller.

[0036] In this embodiment, the mobile phone app provides a simple and clear interface. The user can set the size of the auxiliary frame through an interactive method. The interactive method in this embodiment preferably uses a slider in the prior art. The user can see the virtual model ("cross") of the auxiliary frame on the interface and adjust the size parameters such as the width and height of the auxiliary frame by dragging the slider or directly entering numbers.

[0037] More specifically, after the user sets the aspect ratio or specific dimensions of the auxiliary frame, the app calculates the specific row and column ranges that need to be lit. Based on the set area size, it calculates the number of rows and columns that need to be lit in the N×M lamp mounting holes 3, thereby controlling the corresponding auxiliary lamps 4 and border lamps 5 to light up, forming an auxiliary frame that conforms to the preset area size. After the user's setting is completed, the app sends the set parameters (including size, row and column ranges, etc.) to the control circuit board through a wireless communication module (such as Bluetooth or Wi-Fi). The control circuit board lights up the lights in a specific area according to the received parameters, forming a lighting structure that matches the size of the auxiliary frame set by the user.

[0038] For example, when practicing regular script, the user can set the auxiliary frame as a square, and the side length is adjusted to a suitable value according to the size of the rice paper used; when practicing running script, the auxiliary frame can be adjusted to a rectangle to better reflect the fluency of running script. In addition, the user can also select different auxiliary frame shapes, such as a rhombus, etc., by clicking a button to meet diverse practice needs.

[0039] When in use, in the app, a "Color and Intensity Adjustment" interface is specifically set up. The user can select the colors of the auxiliary frame and the "rice" - shaped auxiliary lights respectively. Through the color palette or color code input method, personalized color combinations can be achieved. At the same time, the slider is used to adjust the light intensity. In a darker environment, the light intensity can be appropriately increased; in a well - lit environment, the light intensity is reduced to achieve the best visual effect. For example, the user can set the border of the auxiliary frame to red, the "rice" - shaped auxiliary lights to blue, and adjust the light intensity of the auxiliary frame lights to 80% and the light intensity of the "rice" - shaped auxiliary lights to 60% according to the ambient light conditions, making a clear distinction between the two in terms of color and intensity for easy writing reference.

[0040] To achieve real - time light adjustment according to the font size and direction written by the user, when the user starts writing, the actual font size of the writing is detected and collected through a sensor, and the writing screen is analyzed in combination with the image recognition module in the mobile app. The analysis includes converting the color image into a grayscale image to reduce the interference of color information on subsequent processing; then performing binarization processing. By setting a suitable threshold, the pixels in the image are divided into foreground (text part) and background, making the text part appear as distinct black or white areas for easy subsequent feature extraction. In addition, a denoising algorithm is also used to remove the noise in the image, preferably Gaussian filtering in the prior art, to make the image clearer.

[0041] Using a deep learning-based method, preferably a convolutional neural network (CNN) in the prior art, to detect text regions in the preprocessed image. After determining the text regions, estimate the font size by calculating feature parameters such as the pixel area and stroke length of the text regions, and detect and collect the actual font size of the writing through a sensor. , analyze the writing screen in combination with the image recognition module in the mobile app, and calculate the ratio of the actual font size to the preset font size. If , the font is too large, and at this time, the auxiliary frame is automatically enlarged; if , the font is too small, and at this time, the auxiliary frame is automatically reduced.

[0042] In this embodiment, the deep learning-based direction detection model can accurately judge the direction of the text. By learning the characteristics of texts in different directions, this model can identify whether the text is horizontal, vertical or inclined. For example, determine the font direction by analyzing features such as the main direction of the text strokes and the inclination angle of the text lines. For inclined fonts, the specific inclination angle will be calculated for subsequent precise adjustment of the auxiliary lines.

[0043] In this embodiment, preferably use the optical flow detection algorithm in the prior art to monitor the change of the paper position in real time. After detecting the change of the paper position each time, calculate the displacement vector and compare it with the preset threshold. If it exceeds the threshold, automatically adjust the position of the auxiliary frame to ensure that the auxiliary frame maintains a relatively accurate positional relationship with the writing area on the paper.

[0044] In this embodiment, the system obtains the image and position of the writing area in real time through a pressure sensor. Each time the paper moves, capture consecutive image frames before and after. Select feature points (such as corners, texts or paper textures) on the paper in the first frame image. Among them, these feature points are relatively stable in the movement of the image and are convenient for tracking; find the position changes of these feature points in the subsequent frames through the optical flow algorithm, so as to estimate the movement of the paper in the image plane.

[0045] In this embodiment, the movement speed and direction of each feature point can be calculated by the following equation: , where , are the spatial gradients (i.e., the change rate of pixel brightness) of the image in the , directions respectively, is the brightness change in time, , respectively represent the displacement speeds of the paper in the , directions.

[0046] In this embodiment, for each detected paper feature point, the displacement vector between two frames is calculated. The displacement vector V represents the moving distance of the paper on the axis and axis, where: ; where, , is the position of the feature point in the new image frame, , is the position of the feature point in the previous image frame.

[0047] By synthesizing the displacements of all feature points, the average displacement vector of the entire paper is obtained by the averaging method: , where n is the number of tracked feature points, , respectively represent the displacements of the i-th feature point.

[0048] In this embodiment, the system sets a movement threshold T to determine whether the displacement of the paper is significant enough. If the magnitude of the displacement vector exceeds the threshold T, it is determined that the paper has moved significantly, and the system needs to adjust the position of the auxiliary frame: where, , If >T, the automatic adjustment of the auxiliary frame position is triggered.

[0049] When the displacement vector exceeds the threshold, the system needs to readjust the position of the auxiliary frame. The specific adjustment steps are as follows: According to the displacement vector , calculate the new position of the auxiliary frame. Assuming the center position of the original auxiliary frame is , then the new position, , the control circuit board sends an instruction to relight the lights in the light-emitting felt 1 and move the auxiliary frame to the new position to keep it aligned with the paper.

[0050] In this embodiment, according to the ambient light intensity data collected by the ambient light sensor, it is determined whether the current environment is in the daytime mode or the nighttime mode, and the light brightness is adjusted accordingly. In this embodiment, the HSV color space optimization algorithm in the prior art is preferably used to automatically adjust the color contrast between the border light 5 and the auxiliary light 4 according to the color and intensity of the ambient light, so as to improve the recognition rate of the auxiliary frame and the auxiliary line under different lighting conditions.

[0051] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative rather than restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the spirit of the present invention and the scope protected by the claims. All of these are within the protection scope of the present invention.

Claims

1. A luminous adjustable felt for calligraphy practice, characterized in that: It includes a felt (1), a light-emitting layer (2), a light-emitting component, splicing pieces (8) and a hinging component (9). The light-emitting layer (2) is adhesively arranged on the upper layer of the felt (1). The light-emitting component is arranged in the light-emitting layer (2) to enable the light source to be shown through the light-emitting layer (2). The splicing pieces (8) are several and adhesively arranged on the lower layer of the felt (1). And there are several hinging components (9), and a hinging component (9) is connected between every two adjacent splicing pieces (8) to achieve hinging.

2. The luminous adjustable felt for calligraphy practice according to claim 1, wherein: The light-emitting component includes several auxiliary lamps (4) and a border lamp (5). Several lamp mounting holes (3) are arranged in a rectangular array in the light-emitting layer (2). The auxiliary lamps (4) are fixedly arranged at the centers of the lamp mounting holes (3), and at least four border lamps (5) are arranged in a circumferential array around the periphery of each auxiliary lamp (4) in each lamp mounting hole (3).

3. A luminous adjustable felt for calligraphy practice according to claim 1 or 2, characterized in that: The hinging component (9) includes a sphere (91), a rotating arc plate (93) and a rotating shaft (95). The sphere (91) and the rotating arc plate (93) are correspondingly arranged on the opposite side edges of every two adjacent splicing pieces (8). The rotating shaft (95) is arranged at both ends of the rotating arc plate (93) and hinged to the sphere (91).

4. The light-emitting adjustable felt for calligraphy practice according to claim 3, characterized in that: Spherical grooves (96) are formed in the side edges of every two adjacent splicing pieces (8). The sphere (91) and the rotating arc plate (93) are arranged in the spherical grooves (96). The sphere (91) is provided with a first fixing rod (92) and fixed to the side edge of one of the splicing pieces (8). The rotating arc plate (93) is provided with a second fixing rod (94) and fixed to the side edge of the other splicing piece (8).

5. A luminous adjustable felt for calligraphy practice according to claim 1, characterized in that: This adjustable felt further includes magnetic attraction blocks (6). Several fixing holes (7) are arranged at the corners of the light-emitting layer (2). The magnetic attraction blocks (6) are magnetically connected to the inner walls of the fixing holes (7).

6. A method for adjusting the felt of the light-emitting adjustable felt for calligraphy practice according to any one of claims 1-5, characterized in that: It includes: N×M lamp mounting holes (3) are arranged on the surface of the felt (1). Each lamp mounting hole (3) includes a border lamp (5) and an auxiliary lamp (4). An auxiliary frame for assisting calligraphy practice is formed by adjusting the lights. The area size, light color and brightness of the auxiliary frame are set through a mobile phone app to match the set calligraphy practice area size. Collect the actual font size of the writing through sensor detection , analyze the writing screen in combination with the image recognition module in the mobile phone app, and calculate the ratio of the actual font size to the preset font size . If , the font is too large, and the auxiliary frame is automatically enlarged at this time; if , the font is too small, and the auxiliary frame is automatically reduced at this time; The movement of the paper is monitored through an optical flow detection algorithm, and the light position is adjusted to realign the auxiliary frame. The ambient brightness is detected through a light sensor, and the light brightness and color contrast are adjusted.

7. A method for adjusting the felt of a luminous adjustable felt for calligraphy practice according to claim 6, characterized in that: The forming of the auxiliary frame for assisting calligraphy practice by adjusting the lights specifically includes: The auxiliary lamps (4) are arranged at the centers of each lamp mounting hole (3). At least four evenly distributed border lamps (5) are arranged around the periphery of each auxiliary lamp (4). And each small lamp can be controlled to change into at least three colors of red, yellow and blue. Different colors and intensities of lights of the auxiliary lamps (4) and the border lamps (5) are set to distinguish the auxiliary effects.

8. The felt adjusting method of a light-emitting adjustable felt for calligraphy practice according to claim 7, characterized in that: The setting of the area size, light color and brightness of the auxiliary frame through a mobile phone app to match the set calligraphy practice area size specifically includes: According to the preset size parameter of the auxiliary frame, calculate the specific row and column range to be lit in the N×M lamp mounting holes (3), and control the corresponding auxiliary lights (4) and border lights (5) to be lit to form an auxiliary frame matching the size of the set area; Adjust the driving signal of the LED lamp to make the light present the color selected by the user; According to the received brightness parameter, use PWM (pulse width modulation) technology to accurately adjust the brightness of the light by controlling the PWM controller integrated on the circuit board.

9. The felt adjusting method of a light-emitting adjustable felt for calligraphy practice according to claim 8, characterized in that: The analysis of the writing picture by combining the image recognition module in the mobile phone app specifically includes: Convert the color writing picture image into a grayscale image, further convert the grayscale image into a binary image, and remove the noise interference in the image; Perform text region detection, font size analysis and font direction judgment according to the deep learning algorithm.

10. A method for adjusting the felt of a light-emitting adjustable felt for calligraphy practice according to claim 9, characterized in that: The monitoring of the paper movement by the optical flow detection algorithm and the adjustment of the light position to realign the auxiliary frame specifically include: Use the optical flow detection algorithm to monitor the change of the paper position in real time. After each detection of the paper position change, calculate the displacement vector and compare it with the preset threshold. If it exceeds the threshold, automatically control the on and off of the lights at different positions to simulate the movement of the auxiliary frame and make it realign with the writing area on the paper.

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