English learning card reading supporting device and using method

Abstract

The invention belongs to the technical field of supporting equipment, and discloses an English learning card reading supporting device and a using method, and the device comprises a card reader body, a rotating seat, a supporting leg assembly, a rotation driving mechanism, an unfolding driving mechanism and a monitoring mechanism; the two sides of the card reader body are each provided with a rotating base in a rotatable mode. A rotation driving mechanism is fixedly arranged on the card reader body; the rotating driving mechanism is in transmission connection with the rotating seat; two supporting leg assemblies are symmetrically and rotatably arranged on the rotating seat; an unfolding driving mechanism is fixedly arranged on the rotating seat; the unfolding driving mechanism is in transmission connection with the two supporting leg assemblies, and a monitoring mechanism is fixedly arranged on the card reader body. The card reader is convenient to carry and store, the supporting leg assembly can be rapidly unfolded and stably supported, the angle and the height are adjusted in a self-adaptive mode, the monitoring mechanism can monitor the inclination angle and the height of the card reader body in real time, and a corresponding adjusting strategy is formulated according to the sitting posture eye position height of a student.

Description

Technical Field

[0001] The present application relates to the technical field of support equipment, and more specifically, to an English learning card reading support device and a method of use. Background Art

[0002] English teaching refers to the process of teaching English to people whose first language is English or not; English teaching involves a variety of professional theoretical knowledge, including linguistics, second language acquisition, lexicology, syntax, stylistics, corpus theory, cognitive psychology, etc. Nowadays, self-study of English is carried out through the combination of English cards and card readers.

[0003] The document with the prior art publication number CN222053509U provides an English learning card reading support device, including a reader body, a switch and a button are respectively arranged on the front of the reader body, a support leg is provided on the back of the reader body, the inner wall of the support leg is rotatably connected with a rotating rod, the surface of the rotating rod is fixedly sleeved with the support leg, the back of the support leg is provided with a storage slot, and the bottom wall of the inner wall of the storage slot is fixedly connected with a fixed block. At this time, the support leg is supported on the external support surface at a certain angle, and then the switch is turned on, the reader body starts to play, and the button is used for operation. When it is necessary to carry it, the support plate is rotated in the opposite direction again, and the rotation of the support plate drives the clamping block away from the clamping hole, and the support plate is rotated into the storage slot. At this time, the torsion spring resets and drives the support leg to rotate into the storage slot, so that the device has the effect of facilitating the storage of the support leg and achieving the effect of being easy to carry.

[0004] Although the above-mentioned prior art solutions can achieve relevant beneficial effects through the structure of the prior art, they still have the following defects: 1. The height and tilt angle of the reader body cannot be mechanically adjusted as needed. 2. The sitting posture of the students cannot be identified, and the height and angle of the reader body cannot be adjusted according to the sitting posture of the students.

[0005] In view of this, we propose an English learning card reading support device and a method of use. Summary of the invention

[0006] 1. Technical issues to be solved

[0007] The purpose of this application is to provide an English learning card reading support device and a method of use, which solves the technical problems raised in the above-mentioned background technology, realizes the support is easy to carry and store, and the leg assembly can be quickly unfolded and stably supported: adaptive adjustment of angle and height: the monitoring mechanism can monitor the inclination angle and height of the card reader body in real time, and formulate corresponding adjustment strategies according to data such as the student's sitting posture, eye position height, distance between the eye and the card reader body, and height difference, and adjust the height and angle of the card reader body through the leg assembly, rotation drive mechanism and unfolding drive mechanism.

[0008] 2. Technical solution

[0009] The technical solution of the present application provides an English learning card reading support device, comprising: a card reader body, a swivel seat, a leg assembly, a rotation drive mechanism, an unfolding drive mechanism and a monitoring mechanism.

[0010] Both sides of the card reader body are rotatably provided with a rotating seat; a rotating driving mechanism is fixedly provided on the card reader body; the rotating driving mechanism is transmission-connected with the rotating seat; and the rotating driving mechanism can drive the rotating seat to rotate.

[0011] The card reader itself has the important function of reading the information on the English learning card. It has a specific card slot or reading area, can accurately identify the content on the card, and present the learning content to the user through the built-in display screen, voice playback and other modules.

[0012] A card slot is provided on the rear side of the card reader body; two leg assemblies are symmetrically and rotatably arranged on the rotating seat; an unfolding drive mechanism is fixedly arranged on the rotating seat; the unfolding drive mechanism is transmission-connected with the two leg assemblies, and the unfolding drive mechanism can drive the two leg assemblies to rotate synchronously in opposite directions.

[0013] The swivel seat and the leg assembly can be stored in the card slot of the card reader body; a rangefinder is fixedly arranged on the swivel seat to measure the height from the swivel seat to the desktop; a monitoring mechanism is fixedly arranged on the card reader body; the monitoring mechanism monitors the tilt angle and height of the card reader body, monitors the user's sitting posture and the distance and height difference between the eyes and the card reader body, and sets the angle and height adjustment strategy of the card reader body.

[0014] Through the above technical solution, in the initial state, the swivel seat and the leg assembly are stored in the card reader body, which is easy to carry and saves space. When students need to use the card reader body to read English learning cards, the swivel seat and the leg assembly are driven to rotate by the rotating drive mechanism to extend the card reader body; the two leg assemblies are driven to rotate and unfold synchronously in the opposite direction by the unfolding drive mechanism, and the two leg assemblies are placed on the desktop, and stable support is provided by the two leg assemblies. The inclination angle of the card reader body is adjusted by the rotating drive mechanism; students or users can place English learning cards on the card reader body to learn English; the inclination angle and height of the card reader body are monitored by the monitoring mechanism, the user's sitting posture and the distance and height difference between the eyes and the card reader body are monitored, and the angle and height adjustment strategy of the card reader body is set.

[0015] As an optional solution of the present invention, the leg assembly includes an upper leg, a lower leg and an electric telescopic rod.

[0016] The lower leg is a U-shaped structure, with electric telescopic rods fixedly installed on the inner sides of both ends of the lower leg; the upper leg is fixedly installed on the movable rod of the electric telescopic rod; the two upper legs are rotatably connected to the swivel seats on both sides; an angle detector is fixedly installed on the upper leg. A rubber pad is fixedly installed at the lower end of the lower leg, and the rubber pad is provided with anti-slip grooves.

[0017] Through the above technical solution, starting the electric telescopic rod can drive the lower leg to move, thereby adjusting the distance between the upper leg and the lower leg, realizing the adjustment of the length of the leg assembly, and adjusting the height of the card reader body.

[0018] As an optional solution of the present invention, the rotation driving mechanism includes a motor and a driving gear.

[0019] A motor is fixedly arranged on the card reader body, and a driving gear is coaxially fixedly arranged on the output end of the motor; a driven gear is fixedly arranged on one of the rotating seats, and the driven gear is meshed and transmission-connected with the driving gear.

[0020] Through the above technical solution, the starting motor drives the driving gear to rotate, the driving gear drives the driven gear to rotate, and the driven gear drives the rotating seat to rotate.

[0021] As an optional solution of the present invention, the unfolding drive mechanism includes an electric push rod, a push block, a push rod and a sliding column.

[0022] An electric push rod is fixedly arranged on the rotating seat; a top block is fixedly arranged on the movable rod of the electric push rod, and a top rod is fixedly arranged on the top block; sliding columns are fixedly arranged at both ends of the top rod; guide grooves are fixedly arranged on the upper legs, and the guide grooves on the two upper legs on the same side are symmetrically arranged. The sliding column is arranged in sliding contact with the corresponding guide groove.

[0023] Through the above technical solution, the electric push rod is started to drive the top block to move, the top block drives the top rod and the sliding column to move, and the two sliding columns drive the two upper legs to rotate synchronously in opposite directions to achieve synchronous expansion or storage.

[0024] As an optional solution of the present invention, a high-definition camera and a control switch are fixedly arranged on the card reader body.

[0025] The card reader body is provided with buttons, which usually include direction keys, confirmation keys, return keys, volume adjustment keys and some special function keys.

[0026] As an optional solution of the present invention, the monitoring mechanism includes:

[0027] Data collection module: collects data from the card reader body, leg assembly, rotation drive mechanism, deployment drive mechanism and high-definition camera; collects sitting posture data.

[0028] Image acquisition module: collect high-definition images of students through high-definition cameras.

[0029] Image preprocessing module: preprocess the collected images, including filtering and denoising, image enhancement, grayscale and normalization.

[0030] Feature extraction module: extracts features from the preprocessed image. The extracted features include color, texture and shape.

[0031] Analysis and recognition module: Analyze and recognize the image after feature extraction, analyze the student's sitting posture and eye position height; calculate the distance and height difference between the eye and the card reader body; and detect abnormal situations in a timely manner.

[0032] Strategy formulation module: according to the distance and height difference data between the eye and the card reader body; setting the angle and height adjustment strategy of the card reader body.

[0033] Alarm module: includes an alarm, which will sound an alarm in time when an abnormal situation is detected.

[0034] Control center: network connected with data collection module, image acquisition module, image preprocessing module, feature extraction module, strategy formulation module, analysis and recognition module and alarm module.

[0035] As an optional solution of the present invention, the analysis and recognition module analyzes and recognizes the image after feature extraction, analyzes the student's sitting posture and eye position height; calculates the distance and height difference between the eye and the card reader body; and promptly detects abnormal situations. The following steps are included:

[0036] 1. Sitting posture analysis:

[0037] 1.1. Constructing a sitting posture model: Select the support vector machine (SVM) model and train the sitting posture analysis model through a large number of samples. Learn from a large amount of image data containing different sitting postures (correct and incorrect) to master the characteristic patterns corresponding to different sitting postures.

[0038] 1.2. Feature vector input: The feature vectors composed of the student's body shape, texture and other features extracted by the feature extraction module are input into the loaded sitting posture model. These feature vectors contain key information about each part of the student's body in the image and are the basis for the model to analyze and judge.

[0039] 1.3. Sitting posture judgment: The sitting posture model calculates and judges based on the input feature vector through internal algorithm logic. According to the classification hyperplane determined during the training process, it judges which sitting posture category the input feature vector belongs to and outputs the corresponding sitting posture analysis result.

[0040] 2. Eye position height recognition:

[0041] 2.1. Facial feature point detection: Use a specialized facial feature point detection algorithm, such as a deep learning-based method, such as using a pre-trained facial key point detection model (such as MTCNN, etc.). The model will process the image after feature extraction and accurately locate multiple key feature points of the student's face in the image, including the feature points of the eyes.

[0042] 2.2. Eye height calculation: After obtaining the pixel coordinates of the eye feature points, combined with the height information of the card reader body 1 and the imaging parameters of the camera, the pixel coordinates of the eye feature points are converted into actual space coordinates through the triangulation principle or similar geometric calculation methods, so as to calculate the height of the eye relative to the plane where the card reader body is placed.

[0043] 2.3. Calculate the distance between the eye and the card reader body: Use a method based on the principle of triangulation or use depth image information to calculate the distance. Some inherent parameters of the camera are known (such as the baseline length, that is, the distance between the two cameras, if it is a binocular camera; or the focal length of the camera, etc.), as well as the position information of the eye and the reference point in the image obtained through image analysis. According to the mathematical formula of triangulation, calculate the actual distance between the eye and the reference point on the card reader body.

[0044] 2.4. Height difference calculation: Integrate the calculated eye height with the height data of the card reader body. The height data of the card reader body can be provided in real time by its built-in height sensor. Subtract the height of the card reader body from the eye height to obtain the height difference between the eye and the card reader body.

[0045] 2.5. Abnormal situation judgment:

[0046] 2.5.1. Preset standard loading: Load the standard range data of the distance between the eyes and the card reader body, height difference and correct sitting posture under normal reading conditions from the system preset database.

[0047] 2.5.2. Comparison and judgment: The calculated distance between the eye and the card reader body, the height difference and the analyzed sitting posture results are compared with the preset standard range. The analysis and recognition module determines whether there is any abnormality.

[0048] 2.5.3. Abnormal information output: Once an abnormal situation is determined, the analysis and identification module will organize the abnormal information, including the abnormal type, specific abnormal data, etc., and output this abnormal information to the alarm module and the strategy formulation module so that corresponding measures can be taken.

[0049] As an optional solution of the present invention, the strategy formulation module sets the angle and height adjustment strategy of the card reader body according to the distance and height difference data between the eye and the card reader body. The height and angle of the card reader body are adjusted by the leg assembly, the rotation drive mechanism, and the unfolding drive mechanism, including the following steps:

[0050] 1. Data reception: Receive the distance and height difference data between the eye and the card reader body from the analysis and recognition module. Obtain the height and tilt angle data of the card reader body.

[0051] 2. Develop strategic reference standards: Refer to the standard information built into the reference system, which includes the ideal eye distance range for normal reading.

[0052] 3. Strategy formulation process:

[0053] 3.1. Distance adjustment strategy: When the distance between the eye and the card reader is less than 30 cm (the eye is too close): the strategy formulation module will generate a strategy to raise the card reader, which is implemented by deploying the drive mechanism. When the distance between the eye and the card reader is greater than 40 cm (the eye is too far): formulate a strategy to lower the height of the card reader, which is operated by deploying the drive mechanism to encourage students to shorten the distance.

[0054] 3.2. Height difference adjustment strategy: If the height difference between the eye and the card reader body is less than -5 cm (the eye is too low): the deployment drive mechanism will receive a command to raise the card reader body, and the height adjustment amount is three millimeters, so as to raise the height of the card reader body and put the eye at a more appropriate height position. If the height difference between the eye and the card reader body is greater than five centimeters (the eye is too high): the deployment drive mechanism will receive a command to lower the height of the card reader body, so that the height difference between the eye and the card reader body returns to a reasonable range.

[0055] 3.3. Comprehensive adjustment strategy: In some cases, both the distance and height difference may not meet the standard, and comprehensive consideration is required for adjustment. For different comprehensive situations, the degree of increase or decrease and the amount of angle adjustment can be flexibly adjusted according to the actual situation and user experience.

[0056] 3.4. Tilt angle adjustment strategy: When it is detected that the student's sitting posture requires adjustment of the reading angle, the student is guided to adjust the sitting posture by adjusting the tilt angle of the card reader body.

[0057] 4. Sending adjustment instructions: Sending instructions related to height adjustment to the unfolding drive mechanism, clearly indicating whether it is a raising or lowering operation and the specific adjustment range. Sending instructions related to angle adjustment to the rotation drive mechanism, clearly indicating whether it is an increasing or decreasing operation and the specific angle adjustment amount.

[0058] 5. Adjustment feedback optimization: After waiting for the actuator (leg assembly, rotation drive mechanism, and unfolding drive mechanism) to complete the adjustment operation, the monitoring mechanism will re-collect information such as the distance and height difference between the eye and the card reader body. Evaluate the effect of this adjustment based on the new data fed back by the monitoring mechanism. If the preset standard is still not met after the adjustment, the strategy formulation module will re-formulate the adjustment strategy based on the new data and continue the adjustment operation until a satisfactory effect is achieved or the upper limit of the number of adjustments is reached.

[0059] The present invention provides a method for using an English learning card reading support device, comprising the following steps:

[0060] S1, initial state, the swivel seat and the leg assembly are stored in the card reader body, the card reader body is held, and the swivel seat and the leg assembly are driven to rotate by the rotation drive mechanism, and then extended out of the card reader body.

[0061] S2. The two leg assemblies are driven to rotate in opposite directions synchronously and unfold through the unfolding drive mechanism.

[0062] S3, placing the two leg assemblies on the desktop, and providing stable support for the card reader body through the two leg assemblies. The tilt angle and height of the card reader body are monitored by the monitoring mechanism.

[0063] S4, the image acquisition module collects high-definition images of students through a high-definition camera.

[0064] S5, the image preprocessing module preprocesses the collected image, including filtering and denoising, image enhancement, grayscale and normalization, etc.; the feature extraction module extracts features from the preprocessed image, and the extracted features include color, texture and shape.

[0065] S6. The analysis and recognition module analyzes and recognizes the image after feature extraction, analyzes the student's sitting posture and eye position height; calculates the distance and height difference between the eye and the card reader body; and detects abnormal situations in a timely manner.

[0066] S7. The strategy formulation module sets the angle and height adjustment strategy of the card reader body according to the distance and height difference data between the eye and the card reader body.

[0067] S8, the leg assembly, the rotation drive mechanism and the unfolding drive mechanism adjust the height and angle of the card reader body according to the instructions.

[0068] S9. When an abnormal situation is detected, the alarm module will sound an alarm in time and remind students to correct their sitting posture through voice.

[0069] 3. Beneficial effects

[0070] One or more technical solutions provided in the technical solution of this application have at least the following technical effects or advantages:

[0071] 1. The English learning card reading support device of the present invention is easy to carry and store. The swivel seat and the leg assembly can be stored in the card reader body, so that the entire device has a compact structure, which is convenient for students to carry with them. Whether it is placed in a schoolbag or a handbag, it will not take up too much space, which provides great convenience for students to move between different learning places and enhances the flexibility of learning.

[0072] 2. Rapid deployment and stable support: Through the coordinated work of the rotation drive mechanism and the deployment drive mechanism, the swivel seat and the leg assembly can be quickly deployed from the storage state in a short time, and the leg assembly can be placed on the desktop to provide stable support for the card reader body. The device can be prepared without complicated operations to meet the students' immediate learning needs.

[0073] 3. Adaptive adjustment of angle and height: The monitoring mechanism can monitor the tilt angle and height of the card reader body in real time, formulate corresponding adjustment strategies based on data such as the student's sitting posture, eye position height, distance between the eye and the card reader body, and height difference, and adjust the height and angle of the card reader body through the leg assembly, rotation drive mechanism and deployment drive mechanism.

[0074] 4. It can timely detect abnormal situations of students during use, such as improper sitting posture, too close or too far distance, etc., and send out alarms through the alarm module and remind students to correct their sitting posture through voice, so as to prevent students from causing myopia, spinal curvature and other health problems due to long-term bad posture and improper distance, and play a role in supervising and protecting students' physical health. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] Figure 1 This is an overall schematic diagram of an English learning card reading support device disclosed in a preferred embodiment of the present application.

[0076] Figure 2 This is a schematic diagram of the rotation drive mechanism of the English learning card reading support device disclosed in a preferred embodiment of the present application.

[0077] Figure 3 This is a front view of a card reader body of an English learning card reading support device disclosed in a preferred embodiment of the present application.

[0078] Figure 4 This is a schematic diagram of the swivel base and leg assembly of the English learning card reading support device disclosed in a preferred embodiment of the present application in a storage state.

[0079] Figure numerals: 1. card reader body; 2. swivel seat; 3. leg assembly; 4. rotation drive mechanism; 5. unfolding drive mechanism; 6. high-definition camera; 7. control switch; 11. card slot; 21. driven gear; 31. upper leg; 311. guide groove; 32. lower leg; 33. electric telescopic rod; 41. motor; 42. driving gear; 51. electric push rod; 52. top block; 53. top rod; 54. sliding column. DETAILED DESCRIPTION

[0080] The present application is further described in detail below in conjunction with the accompanying drawings.

[0081] Reference Figure 1 and Figure 4 The embodiment of the present application provides an English learning card reading support device, including: a card reader body 1, a rotating seat 2, a leg assembly 3, a rotation drive mechanism 4, an unfolding drive mechanism 5 and a monitoring mechanism.

[0082] A rotating seat 2 is rotatably provided on both sides of the card reader body 1; a rotating drive mechanism 4 is fixedly provided on the card reader body 1; the rotating drive mechanism 4 is transmission-connected with the rotating seat 2; and the rotating drive mechanism 4 can drive the rotating seat 2 to rotate.

[0083] The card reader body 1 has the important function of reading the information on the English learning card. It has a specific card slot or reading area, can accurately identify the content on the card, and present the learning content to the user through the built-in display screen, voice playback and other modules. This is the prior art, in this application, it is only borrowed, and will not be repeated here.

[0084] A card slot 11 is provided on the rear side of the card reader body 1; two leg assemblies 3 are symmetrically and rotatably provided on the rotating base 2; an unfolding drive mechanism 5 is fixedly provided on the rotating base 2; the unfolding drive mechanism 5 is transmission-connected with the two leg assemblies 3, and the unfolding drive mechanism 5 can drive the two leg assemblies 3 to rotate synchronously in opposite directions.

[0085] The rotating seat 2 and the leg assembly 3 can be stored in the card slot 11 of the card reader body 1; a distance meter is fixedly arranged on the rotating seat 2 to measure the height from the rotating seat 2 to the desktop.

[0086] A monitoring mechanism is fixedly arranged on the card reader body 1; the monitoring mechanism monitors the tilt angle and height of the card reader body 1, monitors the user's sitting posture and the distance and height difference between the eyes and the card reader body 1, and sets the angle and height adjustment strategy of the card reader body 1.

[0087] In this technical solution, in the initial state, the swivel seat 2 and the leg assembly 3 are stored in the card reader body 1, which is easy to carry and saves space. When students need to use the card reader body 1 to read English learning cards, the swivel seat 2 and the leg assembly 3 are driven to rotate by the rotating drive mechanism 4, and the card reader body 1 is extended; the two leg assemblies 3 are driven to rotate and unfold synchronously in the opposite direction by the unfolding drive mechanism 5, and the two leg assemblies 3 are placed on the desktop, and stable support is provided by the two leg assemblies 3. The inclination angle of the card reader body 1 is adjusted by the rotating drive mechanism 4; students or users can put English learning cards on the card reader body 1 to learn English; the inclination angle and height of the card reader body 1 are monitored by the monitoring mechanism, the user's sitting posture and the distance and height difference between the eyes and the card reader body 1 are monitored, and the angle and height adjustment strategy of the card reader body 1 is set.

[0088] Furthermore, the leg assembly 3 includes an upper leg 31 , a lower leg 32 and an electric telescopic rod 33 .

[0089] The lower leg 32 is a U-shaped structure, and an electric telescopic rod 33 is fixedly arranged on the inner side of both ends of the lower leg 32; the upper leg 31 is fixedly arranged on the movable rod of the electric telescopic rod 33; the two upper legs 31 are rotatably connected to the rotating seats 2 on both sides respectively; an angle detector is fixedly arranged on the upper leg 31. A rubber pad is fixedly arranged at the lower end of the lower leg 32, and the rubber pad is provided with anti-slip grooves.

[0090] In this technical solution, starting the electric telescopic rod 33 can drive the lower leg 32 to move, thereby adjusting the distance between the upper leg 31 and the lower leg 32, realizing the adjustment of the length of the leg assembly 3, and the height of the card reader body 1 can be adjusted.

[0091] Reference Figure 1 and Figure 2The rotation driving mechanism 4 includes a motor 41 and a driving gear 42 .

[0092] A motor 41 is fixedly disposed on the card reader body 1 , and a driving gear 42 is coaxially fixedly disposed on the output end of the motor 41 ; a driven gear 21 is fixedly disposed on one of the rotating seats 2 , and the driven gear 21 is meshed and transmission-connected with the driving gear 42 .

[0093] In this technical solution, the starting motor 41 drives the driving gear 42 to rotate, the driving gear 42 drives the driven gear 21 to rotate, and the driven gear 21 drives the rotating seat 2 to rotate.

[0094] Furthermore, the unfolding driving mechanism 5 includes an electric push rod 51 , a top block 52 , a push rod 53 and a sliding column 54 .

[0095] An electric push rod 51 is fixedly arranged on the rotating seat 2; a top block 52 is fixedly arranged on the movable rod of the electric push rod 51, and a top rod 53 is fixedly arranged on the top block 52; sliding columns 54 are fixedly arranged at both ends of the top rod 53; a guide groove 311 is fixedly arranged on the upper leg 31, and the guide grooves 311 on the two upper legs 31 on the same side are symmetrically arranged. The sliding column 54 is arranged in sliding contact with the corresponding guide groove 311.

[0096] In this technical solution, the electric push rod 51 is started to drive the top block 52 to move, the top block 52 drives the top rod 53 and the sliding column 54 to move, and the two sliding columns 54 drive the two upper legs 31 to rotate synchronously in opposite directions to achieve synchronous expansion or storage.

[0097] Reference Figure 3 A high-definition camera 6 and a control switch 7 are fixedly arranged on the card reader body 1 .

[0098] The card reader body 1 is provided with buttons, which generally include direction buttons, confirmation buttons, return buttons, volume adjustment buttons, and some special function buttons, etc. This is prior art and will not be described in detail here.

[0099] Furthermore, monitoring agencies include:

[0100] Data collection module: collects data from the card reader body 1, the leg assembly 3, the rotation drive mechanism 4, the unfolding drive mechanism 5 and the high-definition camera 6.

[0101] Image acquisition module: collect high-definition images of students through 6 high-definition cameras.

[0102] Image preprocessing module: preprocess the collected images, including filtering and denoising, image enhancement, grayscale and normalization.

[0103] Feature extraction module: extracts features from the preprocessed image. The extracted features include color, texture and shape.

[0104] Color feature extraction: Color is one of the important features of an image, and is of great significance for identifying students' facial skin color, clothing color and other information. The feature extraction module uses color histogram, color moment and other methods to extract color features. The color histogram counts the frequency of different colors in the image, which can reflect the overall color distribution of the image; the color moment calculates the first-order moment (mean), second-order moment (variance) and third-order moment (skewness) of the image color to concisely describe the concentration, dispersion and distribution shape of the image color, thereby effectively extracting the color features of the image.

[0105] Texture feature extraction: Texture is a local pattern that recurs in an image and reflects the structural information of the image surface. For student images, texture features can help identify details such as facial wrinkles and clothing texture. The feature extraction module uses algorithms such as gray-level co-occurrence matrix (GLCM) and local binary pattern (LBP) to extract texture features. GLCM describes the texture information of an image by counting the frequency of pixel pairs with specific grayscale differences and spatial distances in the image; LBP generates binary codes by comparing the grayscale values ​​of the central pixel with those of the neighboring pixels to characterize the texture features of the image.

[0106] Shape feature extraction: Shape features can intuitively reflect the body posture and contour information of students. The feature extraction module uses edge detection, contour extraction and other methods to obtain shape features. Commonly used edge detection algorithms such as the Canny edge detection algorithm can accurately detect edge information in the image through Gaussian filtering, gradient calculation, non-maximum suppression and double threshold detection. Contour extraction is based on the results of edge detection, and further extracts the contour of the object to obtain the shape characteristics of the student's body.

[0107] Analysis and recognition module: Analyze and recognize the image after feature extraction, analyze the student's sitting posture and eye position height; calculate the distance and height difference between the eye and the card reader body 1; and detect abnormal situations in time.

[0108] Strategy formulation module: according to the distance and height difference data between the eye and the card reader body 1; setting the angle and height adjustment strategy of the card reader body 1.

[0109] Alarm module: includes an alarm, which will sound an alarm in time when an abnormal situation is detected.

[0110] Control center: network connected with data collection module, image acquisition module, image preprocessing module, feature extraction module, strategy formulation module, analysis and recognition module and alarm module.

[0111] Furthermore, the analysis and recognition module analyzes and recognizes the image after feature extraction, analyzes the student's sitting posture and eye position height; calculates the distance and height difference between the eye and the card reader body 1; and promptly detects abnormal situations. The following steps are included:

[0112] 1. Sitting posture analysis:

[0113] 1.1. Constructing a sitting posture model: Select the support vector machine (SVM) model and train the sitting posture analysis model through a large number of samples. Learn from a large amount of image data containing different sitting postures (correct and incorrect) to master the characteristic patterns corresponding to different sitting postures.

[0114] 1.2. Feature vector input: The feature vectors composed of the student's body shape, texture and other features extracted by the feature extraction module are input into the loaded sitting posture model. These feature vectors contain key information about various parts of the student's body in the image, such as the shape features of the body contour, the texture features of the clothing, etc., which are the basis for the model to analyze and judge.

[0115] 1.3. Sitting posture judgment: The sitting posture model calculates and judges based on the input feature vector through the internal algorithm logic. According to the classification hyperplane determined during the training process, it judges which sitting posture category the input feature vector belongs to, such as "upright sitting posture", "bent sitting posture", "hunched sitting posture", etc., and outputs the corresponding sitting posture analysis results.

[0116] 2. Eye position height recognition:

[0117] 2.1. Facial feature point detection: Use a specialized facial feature point detection algorithm, such as a deep learning-based method, such as using a pre-trained facial key point detection model (such as MTCNN, etc.). The model will process the image after feature extraction and accurately locate multiple key feature points of the student's face in the image, including the feature points of the eyes. For example, it can accurately find the pixel coordinates of key positions such as the corners of the eyes and the center of the pupil.

[0118] 2.2. Eye height calculation: After obtaining the pixel coordinates of the eye feature points, combined with the height information of the card reader body 1 and the imaging parameters of the camera (such as focal length, distance between the imaging plane and the camera, etc.), the pixel coordinates of the eye feature points are converted into actual spatial coordinates through the triangulation principle or similar geometric calculation methods, so as to calculate the height of the eye relative to the plane where the card reader body 1 is placed. The eye height is calculated according to the following formula: h = (y p *Z*k) / (f*L)+h offset ; where h represents the actual height of the eye relative to the plane where the card reader body 1 is placed. pis the ordinate of the eye feature point on the imaging plane. Z is the vertical distance from the plane where the card reader body 1 is placed to the optical center of the camera. f is the focal length of the camera. L is the distance from the imaging plane to the optical center of the camera. k is a proportional coefficient related to the internal parameters and imaging characteristics of the camera, which needs to be obtained through camera calibration. h offset It is a correction value used to compensate for the height deviation caused by factors such as the camera installation angle and the structure of the card reader body 1 itself, and can be determined through multiple experimental measurements and calibrations.

[0119] 2.3. Calculate the distance between the eye and the card reader body 1: Use a method based on the triangulation principle or use depth image information to calculate the distance. Some inherent parameters of the camera are known (such as the baseline length, that is, the distance between the two cameras, if it is a binocular camera; or the focal length of the camera and other parameters), as well as the position information of the eye and the reference point in the image obtained by image analysis. According to the mathematical formula of triangulation, calculate the actual distance between the eye and the reference point on the card reader body 1. Calculate the actual distance between the eye and the reference point on the card reader body 1 according to the following formula.

[0120] D=(f*b*a) / {[|x l -x r |+β*(x l -x r ) 2 / (f*b)]+ζ}; where D is the actual distance between the eye and the reference point on the card reader body 1. b is the baseline length between the two cameras in the binocular camera; x l is the horizontal coordinate of the eye in the left camera image. r is the horizontal coordinate of the eye in the right camera image. f is the focal length of the camera. β and ζ are coefficients obtained through training with a large amount of experimental data, which are used to accurately correct the measurement errors caused by various factors. a is the distance adjustment coefficient, which is related to the influence of environmental factors (such as light, temperature, etc.) on the measurement accuracy and can be obtained by experimental fitting under different environmental conditions.

[0121] 2.4. Height difference calculation: Integrate the calculated eye height with the height data of the card reader body 1. The height data of the card reader body 1 can be provided in real time by its built-in height sensor. Subtract the height of the card reader body 1 from the eye height to obtain the height difference between the eye and the card reader body 1.

[0122] 2.5. Abnormal situation judgment:

[0123] 2.5.1. Loading preset standards: Load the standard range data of the distance between the eyes and the card reader body 1, the height difference and the correct sitting posture under normal reading conditions from the system preset database. For example, the normal reading distance range is set to 30-40 cm, the height difference range is set to -5 to 5 cm (the eyes are slightly higher than the card reader body 1), and the specific feature description of the correct sitting posture.

[0124] 2.5.2. Comparison and judgment: The calculated distance between the eye and the card reader body 1, the height difference and the analyzed sitting posture results are compared with the preset standard range. If the distance is less than 30 cm or greater than 40 cm, or the height difference exceeds the range of -5 to 5 cm, or the sitting posture does not meet the characteristic description of the correct sitting posture, such as bending over or hunching over, the analysis and recognition module determines that an abnormality has occurred.

[0125] 2.5.3. Abnormal information output: Once an abnormal situation is determined, the analysis and identification module will organize the abnormal information, including the abnormal type (such as abnormal distance, abnormal height difference, abnormal sitting posture, etc.), specific abnormal data (actual distance, height difference value, and incorrect sitting posture type), etc., and output these abnormal information to the alarm module and the strategy formulation module so that corresponding measures can be taken.

[0126] Furthermore, the strategy formulation module sets the angle and height adjustment strategy of the card reader body 1 according to the distance and height difference data between the eye and the card reader body 1. The height and angle of the card reader body 1 are adjusted by the leg assembly 3, the rotation drive mechanism 4, and the unfolding drive mechanism 5, including the following steps:

[0127] 1. Data reception: Receive the distance and height difference data between the eye and the card reader body 1 from the analysis and recognition module. Obtain the height and tilt angle data of the card reader body 1.

[0128] 2. Develop strategy reference standards: Refer to the standard information built into the reference system, including the ideal eye distance range for normal reading, for example, the near distance threshold is set to 30 cm and the far distance threshold is set to 40 cm; the ideal height difference range between the eye and the card reader body 1, for example, the lower limit is -5 cm and the upper limit is 5 cm; the appropriate tilt angle range of the card reader body 1, for example, the minimum tilt angle is 15° and the maximum tilt angle is 30°; and a reasonable height range of the card reader body 1, which is set based on ergonomics and actual usage.

[0129] 3. Strategy formulation process:

[0130] 3.1. Distance adjustment strategy: When the distance between the eye and the card reader body 1 is less than 30 cm (the eye distance is too close): the strategy formulation module will generate a strategy to raise the card reader body 1, which is implemented by unfolding the drive mechanism 5. The height of the rise can be set to a smaller increment, such as 5 mm. At the same time, in order to increase the distance between the eye and the reader, the tilt angle of the card reader body 1 is increased by rotating the drive mechanism 4, and the increment of the angle can be set to 3°. Such adjustment is intended to guide students to naturally adjust their own position so that the eye and the card reader body 1 maintain a suitable distance. When the distance between the eye and the card reader body 1 is greater than 40 cm (the eye distance is too far): formulate a strategy to lower the height of the card reader body 1, operate by unfolding the drive mechanism 5, and reduce the height by 5 mm. At the same time, the tilt angle of the card reader body 1 is reduced by rotating the drive mechanism 4, and the reduced angle is 3°, which encourages students to shorten the distance.

[0131] 3.2. Height difference adjustment strategy: If the height difference between the eye and the card reader body 1 is less than -5 cm (the eye is too low), the unfolding drive mechanism 5 will receive an instruction to raise the card reader body 1, and the height adjustment amount is three millimeters, so as to raise the height of the card reader body 1 and put the eye at a more suitable height position. If the height difference between the eye and the card reader body 1 is greater than five centimeters (the eye is too high), the unfolding drive mechanism 5 will receive an instruction to lower the height of the card reader body 1, and the lowering amount is three millimeters, so that the height difference between the eye and the card reader body 1 returns to a reasonable range.

[0132] 3.3. Comprehensive adjustment strategy: In some cases, both the distance and height difference may not meet the standards at the same time, and comprehensive consideration is needed for adjustment. For example, when the eye distance is too close and the position is too low, the unfolding drive mechanism 5 can first raise the card reader body 1 by 5 mm, and at the same time rotate the drive mechanism 4 to increase the inclination angle of the card reader body 1 by 5°. This adjustment will comprehensively consider the impact on the user experience and avoid inconvenience caused by excessive single adjustment. For different comprehensive situations, the amplitude of increase or decrease and the amount of angle adjustment can be flexibly adjusted according to the actual situation and user experience.

[0133] 3.4. Tilt angle adjustment strategy: When the student's sitting posture is monitored and the reading angle needs to be adjusted, for example, when the student is found to be bending over or hunching over, the tilt angle of the card reader body 1 is adjusted to guide the student to adjust the sitting posture. If the student is in a bent over state, the tilt angle of the card reader body 1 can be increased, and the adjustment amount of the angle can be between 3° and 5°, so as to encourage the student to straighten his back to obtain a more comfortable and healthy reading posture. When the student's sitting posture returns to normal, but the tilt angle of the card reader body 1 is not in the ideal range of 15° to 30°.

[0134] If the current tilt angle is less than 15°, the rotation drive mechanism 4 will receive an instruction to increase the tilt angle, with each adjustment being 3°.

[0135] If the current tilt angle is greater than 30°, the rotation drive mechanism 4 will receive an instruction to reduce the tilt angle, and the adjustment range each time is also 3°.

[0136] 4. Sending adjustment instructions: Sending instructions related to height adjustment to the unfolding drive mechanism 5, clearly indicating whether it is a raising or lowering operation and the specific adjustment range. Sending instructions related to angle adjustment to the rotation drive mechanism 4, clearly indicating whether it is an increasing or decreasing operation and the specific angle adjustment amount.

[0137] 5. Adjustment feedback optimization: After waiting for the actuator (leg assembly 3, rotation drive mechanism 4, unfolding drive mechanism 5) to complete the adjustment operation, the monitoring mechanism will re-collect information such as the distance and height difference between the eye and the card reader body 1. Evaluate the effect of this adjustment based on the new data fed back by the monitoring mechanism. If the preset standard is still not met after the adjustment, the strategy formulation module will re-formulate the adjustment strategy based on the new data and continue the adjustment operation until a satisfactory effect is achieved or the upper limit of the number of adjustments is reached.

[0138] The present invention provides a method for using an English learning card reading support device, comprising the following steps:

[0139] S1, initial state, the swivel base 2 and the leg assembly 3 are stored in the card reader body 1, the card reader body 1 is held, and the swivel base 2 and the leg assembly 3 are driven to rotate by the rotation drive mechanism 4, and extended out of the card reader body 1.

[0140] S2. The two leg assemblies 3 are driven by the unfolding driving mechanism 5 to rotate in opposite directions synchronously and unfold.

[0141] S3, placing the two leg assemblies 3 on the table, and providing stable support for the card reader body 1 through the two leg assemblies 3. The tilt angle and height of the card reader body 1 are monitored by the monitoring mechanism.

[0142] S4, the image acquisition module collects high-definition images of students through the high-definition camera 6.

[0143] S5, the image preprocessing module preprocesses the collected image, including filtering and denoising, image enhancement, grayscale and normalization, etc.; the feature extraction module extracts features from the preprocessed image, and the extracted features include color, texture and shape.

[0144] S6. The analysis and recognition module analyzes and recognizes the image after feature extraction, analyzes the student's sitting posture and eye position height; calculates the distance and height difference between the eye and the card reader body 1; and detects abnormal situations in time.

[0145] S7. The strategy formulation module sets the angle and height adjustment strategy of the card reader body 1 according to the distance and height difference data between the eye and the card reader body 1 .

[0146] S8, the leg assembly 3, the rotation drive mechanism 4 and the unfolding drive mechanism 5 adjust the height and angle of the card reader body 1 according to the instruction.

[0147] S9. When an abnormal situation is detected, the alarm module will sound an alarm in time and remind students to correct their sitting posture through voice.

[0148] The working principle of the card reading support device for learning English of the present invention is as follows: in the initial state, the rotating seat 2 and the leg assembly 3 are stored in the card reader body 1, the card reader body 1 is held, and the rotating seat 2 and the leg assembly 3 are driven to rotate by the rotating driving mechanism 4, and the card reader body 1 is extended; the two leg assemblies 3 are driven to rotate synchronously in the opposite direction by the unfolding driving mechanism 5; the two leg assemblies 3 are placed on the desktop, and the two leg assemblies 3 provide stable support for the card reader body 1. The tilt angle and height of the card reader body 1 are monitored by the monitoring mechanism; the image acquisition module collects high-definition images of students through the high-definition camera 6; the image preprocessing module preprocesses the collected images; the feature extraction module extracts features from the preprocessed images; the analysis and recognition module analyzes and recognizes the images after feature extraction, analyzes the sitting posture and eye position height of the students; calculates the distance and height difference between the eyes and the card reader body 1; and promptly discovers abnormal situations. The strategy formulation module sets the angle and height adjustment strategy of the card reader body 1 according to the distance and height difference data between the eyes and the card reader body 1. The leg assembly 3, the rotation drive mechanism 4 and the unfolding drive mechanism 5 adjust the height and angle of the card reader body 1 according to the instructions. When an abnormal situation is detected, the alarm module will issue an alarm in time, and remind students to correct their sitting posture through voice.

[0149] The English learning card reading support device of the present invention is easy to carry and store. The rotating seat 2 and the leg assembly 3 are stored in the card reader body 1, so that the whole device has a compact structure, which is convenient for students to carry. Whether it is placed in a schoolbag or a handbag, it will not take up too much space, which provides great convenience for students to move between different learning places (such as classrooms, libraries, and homes), and enhances the flexibility of learning. It can be quickly unfolded and stably supported: through the coordinated work of the rotating drive mechanism 4 and the unfolding drive mechanism 5, the rotating seat 2 and the leg assembly 3 can be quickly unfolded from the storage state in a short time, and the leg assembly 3 can be placed on the desktop to provide stable support for the card reader body 1. Without complicated operations, the device can be prepared to meet the students' immediate learning needs. Adaptive adjustment of angle and height: The monitoring mechanism can monitor the tilt angle and height of the card reader body 1 in real time, formulate corresponding adjustment strategies according to the student's sitting posture, eye position height, distance between the eye and the card reader body 1 and height difference, and adjust the height and angle of the card reader body 1 through the leg assembly 3, the rotation drive mechanism 4 and the unfolding drive mechanism 5, so as to provide students with personalized reading perspectives, help prevent neck, back and eye fatigue caused by long-term reading, promote students to maintain a correct sitting posture, and effectively protect students' physical health. It can timely detect abnormal situations of students during use, such as improper sitting posture, too close or too far distance, etc., send out an alarm through the alarm module and remind students to correct their sitting posture through voice, so as to prevent students from causing myopia, spinal curvature and other health problems due to long-term bad posture and improper distance, and play a role in supervising and protecting students' physical health.

[0150] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for using an English learning card reading support device, characterized in that: The following steps are involved: S1, holding the card reader body, driving the rotating seat and the leg assembly to rotate through the rotating driving mechanism, and extending the card reader body; S2, driving the two leg assemblies to rotate in opposite directions synchronously and unfold through the unfolding drive mechanism; S3, placing the two leg assemblies on the table, and the monitoring mechanism monitors the tilt angle and height of the card reader body; S4, the image acquisition module of the monitoring organization collects high-definition images of students; S5, the image preprocessing module preprocesses the collected image, and the feature extraction module extracts features from the preprocessed image; S6, the analysis and recognition module analyzes and recognizes the image, analyzes the student's sitting posture and eye position height; calculates the distance and height difference between the eye and the card reader body; and promptly detects abnormal situations; S7, the strategy formulation module sets the angle and height adjustment strategy of the card reader body according to the distance and height difference data between the eye and the card reader body; S8, the leg assembly, the rotation drive mechanism and the unfolding drive mechanism adjust the height and angle of the card reader body according to the instruction; S9. When an abnormal situation is detected, the alarm module will sound an alarm in time.

2. The method for using the English learning card reading support device according to claim 1, characterized in that: Step S6 includes the following steps: S61. Sitting posture analysis: S61.

1. Constructing a sitting posture model: Selecting a support vector machine (SVM) model, training the sitting posture analysis model with a large number of samples; learning a large amount of image data containing different sitting postures, and mastering the characteristic patterns corresponding to different sitting postures; S61.2, feature vector input: input the feature vector composed of the student's body shape and texture features extracted by the feature extraction module into the loaded sitting posture model; S61.3, sitting posture judgment: the sitting posture model performs calculation and judgment based on the input feature vector through internal algorithm logic; S62, Eye Position Height Recognition: S62.

1. Facial feature point detection: Use the pre-trained facial key point detection model MTCNN to process the image after feature extraction and accurately locate multiple key feature points of the student's face in the image, including the feature points of the eyes; S62.2, eye height calculation: after obtaining the pixel coordinates of the eye feature points, the pixel coordinates of the eye feature points are converted into actual space coordinates in combination with the height information of the card reader body and the imaging parameters of the camera, and the height of the eye relative to the plane where the card reader body is placed is calculated; S62.3, calculating the distance between the eye and the card reader body: calculating the actual distance between the eye and the reference point on the card reader body according to the mathematical formula of triangulation based on the position information of the eye and the reference point in the image obtained by image analysis; S62.4, height difference calculation: integrating the calculated eye height with the height data of the card reader body itself, and calculating the height difference between the eye and the card reader body; S62.

5. Abnormal situation judgment: S62.5.1, preset standard loading: load the standard range data of the distance between the eyes and the card reader body, the height difference and the correct sitting posture under normal reading state from the system preset database; S62.5.2, Comparison and judgment: Compare the calculated distance between the eye and the card reader body, the height difference, and the analyzed sitting posture results with the preset standard range; the analysis recognition module determines whether there is any abnormality; S62.5.

3. Abnormal information output: Once an abnormal situation is determined, the analysis and identification module will organize the abnormal information and output the abnormal information to the alarm module and the strategy formulation module.

3. The method for using the English learning card reading support device according to claim 2, characterized in that: In step S62.2, the eye height is calculated according to the following formula: h = (y p *Z*k) / (f*L)+h offset ; where h represents the actual height of the eye relative to the plane where the card reader is placed; y p is the ordinate of the eye feature point on the imaging plane; Z is the vertical distance from the card reader body placement plane to the optical center of the camera; f is the focal length of the camera; L is the distance from the imaging plane to the optical center of the camera; k is a proportional coefficient related to the internal parameters and imaging characteristics of the camera; h offset It is a correction value used to compensate for the height deviation caused by the camera installation angle and the card reader body's own structural factors; In step S62.3, the actual distance between the eye and the reference point on the card reader body is calculated according to the following formula: D = (f*b*a) / {[|x l -x r |+β*(x l -x r ) 2 / (f*b)]+ζ}; where D is the actual distance between the eye and the reference point on the card reader body; b is the baseline length between the two cameras in the binocular camera; x l is the horizontal coordinate of the eye in the left camera image; x r is the horizontal coordinate of the eye in the right camera image; f is the focal length of the camera; β and ζ are coefficients obtained through training with a large amount of experimental data; a is the distance adjustment coefficient, which can be obtained by experimental fitting under different environmental conditions.

4. The method for using the English learning card reading support device according to claim 1, characterized in that: Step S7 includes the following steps: S71, data reception: receiving the distance and height difference data between the eye and the card reader body from the analysis and recognition module; obtaining the height and tilt angle data of the card reader body; S72. Develop strategy reference standards: Refer to the standard information built into the reference system, including the ideal eye distance range for normal reading; S73. Strategy formulation: S73.

1. Distance adjustment strategy: When the distance between the eye and the card reader body is too close: the strategy formulation module will generate a strategy to raise the card reader body, which is achieved by unfolding the driving mechanism; When the distance between the eyes and the card reader body is too far: formulate a strategy to lower the height of the card reader body, and operate it by unfolding the drive mechanism to encourage students to shorten the distance; S73.2, height difference adjustment strategy: if the height difference between the eye and the card reader body is less than the threshold, the deployment drive mechanism will receive an instruction to raise the card reader body, and raise the height of the card reader body to place the eye at a more suitable height position; If the height difference between the eye and the card reader body is greater than a threshold, the unfolding drive mechanism will receive an instruction to lower the height of the card reader body, so that the height difference between the eye and the card reader body returns to a reasonable range; S73.

3. Comprehensive adjustment strategy: For different comprehensive situations, flexibly adjust the amplitude of raising or lowering and the adjustment amount of the angle according to the actual situation and usage experience; S73.4, tilt angle adjustment strategy: when it is detected that the student's sitting posture requires adjustment of the reading angle, the student is guided to adjust the sitting posture by adjusting the tilt angle of the card reader body; S74, sending adjustment instructions: sending instructions related to height adjustment to the unfolding drive mechanism, and sending instructions related to angle adjustment to the rotation drive mechanism; S75, adjustment feedback optimization: After waiting for the actuator to complete the adjustment operation, the monitoring mechanism will re-collect the distance and height difference information between the eye and the card reader body, and evaluate the effect of the adjustment based on the new data fed back by the monitoring mechanism.

5. The method for using the English learning card reading support device according to claim 1, characterized in that: The leg assembly comprises an upper leg, a lower leg and an electric telescopic rod; The lower leg is a U-shaped structure, and electric telescopic rods are fixedly arranged on the inner sides of both ends of the lower leg; the upper leg is fixedly arranged on the movable rod of the electric telescopic rod; the two upper legs are rotatably connected to the swivel seats on both sides respectively; an angle detector is fixedly arranged on the upper leg; a rubber pad is fixedly arranged on the lower end of the lower leg, and the rubber pad is provided with anti-slip grooves.

6. The method for using the English learning card reading support device according to claim 1, characterized in that: The rotation driving mechanism includes a motor and a driving gear; A motor is fixedly arranged on the card reader body, and a driving gear is coaxially fixedly arranged on the output end of the motor; a driven gear is fixedly arranged on one of the rotating seats, and the driven gear is meshed and transmission-connected with the driving gear.

7. The method for using the English learning card reading support device according to claim 1, characterized in that: The unfolding driving mechanism includes an electric push rod, a push block, a push rod and a sliding column; An electric push rod is fixedly arranged on the swivel seat; a top block is fixedly arranged on the movable rod of the electric push rod, and a push rod is fixedly arranged on the top block; sliding columns are fixedly arranged at both ends of the push rod; a guide groove is fixedly arranged on the upper leg, and the sliding column is arranged in sliding contact with the corresponding guide groove.

8. The method for using the English learning card reading support device according to claim 1, characterized in that: A high-definition camera and a control switch are fixedly arranged on the card reader body.

9. The method for using the English learning card reading support device according to claim 1, characterized in that: Monitoring agencies include: Data collection module: collects data from the card reader body, leg assembly, rotation drive mechanism, deployment drive mechanism and high-definition camera; collects sitting posture data; Image acquisition module: collect high-definition images of students through high-definition cameras; Image preprocessing module: preprocess the collected images, including filtering and denoising, image enhancement, grayscale and normalization; Feature extraction module: extracts features from the preprocessed image. The extracted features include color, texture and shape. Analysis and recognition module: Analyze and recognize the image after feature extraction, analyze the student's sitting posture and eye position height; calculate the distance and height difference between the eye and the card reader body; and detect abnormal situations in time; Strategy formulation module: according to the distance and height difference data between the eye and the card reader body; set the angle and height adjustment strategy of the card reader body; Alarm module: including an alarm, which will promptly sound an alarm when an abnormal situation is detected; Control center: network connected with data collection module, image acquisition module, image preprocessing module, feature extraction module, strategy formulation module, control switch, analysis and recognition module and alarm module.

10. An English learning card reading support device, comprising: The card reader body, the rotating seat, the leg assembly, the rotation drive mechanism, the unfolding drive mechanism and the monitoring mechanism are characterized by: Both sides of the card reader body are rotatably provided with a rotating seat; a rotating driving mechanism is fixedly provided on the card reader body; the rotating driving mechanism is transmission-connected with the rotating seat; the rotating driving mechanism can drive the rotating seat to rotate; A card slot is provided on the rear side of the card reader body; two leg assemblies are symmetrically and rotatably provided on the rotating seat; an unfolding driving mechanism is fixedly provided on the rotating seat; the unfolding driving mechanism is transmission-connected with the two leg assemblies, and the unfolding driving mechanism can drive the two leg assemblies to rotate synchronously in opposite directions; The rotating seat and the leg assembly can be stored in the card slot of the card reader body; a distance meter is fixedly arranged on the rotating seat; A monitoring mechanism is fixedly arranged on the card reader body; the monitoring mechanism monitors the tilt angle and height of the card reader body, monitors the user's sitting posture and the distance and height difference between the eyes and the card reader body, and sets the angle and height adjustment strategy of the card reader body.

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