Intelligent classroom evaluation and feedback device driven by teaching behavior data

Abstract

This invention belongs to the field of teaching evaluation technology, specifically a data-driven intelligent classroom evaluation and feedback device for teaching behavior. It includes a control device, a mobile blackboard structure, a wearable structure, a monitoring device, and a recording device. The control device comprises a controller body integrating a classroom data acquisition module, a classroom scene recognition module, a student attention acquisition module, a student interaction quality acquisition module, and a classroom content analysis report generation module. The monitoring device connects to the mobile blackboard structure, and the recording device is worn on the teacher's chest via the wearable structure. This allows the monitoring device to capture real-time images of the entire classroom environment from the blackboard, showing student performance and interaction. The recording device worn on the teacher's chest collects detailed data such as students' body movements and facial expressions at close range. This multi-dimensional data is summarized and analyzed by the control device to understand the strengths and weaknesses of the teacher's teaching.

Description

Technical Field

[0001] This invention relates to the field of teaching assessment technology, specifically to an intelligent classroom assessment and feedback device driven by teaching behavior data. Background Technology

[0002] In today's education field, effective assessment of teaching quality is crucial for improving educational standards and promoting students' all-round development. Traditional methods of assessing teaching quality mainly rely on student exam scores, teacher self-evaluations, and student subjective evaluation questionnaires.

[0003] However, these methods have many limitations. Using exam scores as the basis for assessment can only reflect the degree of students’ mastery in a specific knowledge area, and cannot show students’ behavior, emotional attitude and thinking changes during the learning process. Furthermore, teachers' self-evaluations are often subjectively biased, making it difficult to comprehensively and objectively identify problems in their teaching process. Teachers may overlook potential teaching deficiencies due to preconceived notions about their own teaching methods, and fail to accurately capture students' true reactions and needs in the classroom.

[0004] Therefore, we propose a teaching behavior data-driven intelligent classroom assessment and feedback device to address the above problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an intelligent classroom assessment and feedback device driven by teaching behavior data, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention specifically adopts the following technical solution: A data-driven intelligent classroom assessment and feedback device for teaching behavior includes a control device, a mobile blackboard structure, a wearable structure, a monitoring device, and a recording device. The control device includes a controller body, which integrates a classroom data acquisition module, a classroom scene recognition module, a student attention acquisition module, a student interaction quality acquisition module, and a classroom content analysis report generation module. The controller body has a display screen and a control panel on its surface, and mounting grooves are respectively provided on the top and side. Power supply contacts and magnetic blocks are provided in the mounting grooves. The monitoring device and the recording device are detachably assembled in the two mounting grooves and are electrically connected to the power supply contacts and magnetically fixed to the magnetic blocks. The top of the mobile blackboard structure has a connection point adapted to the monitoring device, and the front of the wearable structure has a connection point adapted to the recording device.

[0007] Furthermore, a mounting base is fixedly connected to the back of the controller body, and the controller body is detachably connected to the support platform through the mounting base. A microphone is fixedly installed on the top of the mounting base, and the microphone is connected to the classroom data acquisition module.

[0008] Furthermore, the monitoring equipment includes a mounting housing, a connecting rod fixedly mounted at the bottom of the mounting housing, and a monitoring probe, a microphone, and a heat sink inside; the movable blackboard structure includes a blackboard body and a movable frame fixed to its exterior, two sets of self-locking casters at the bottom of the movable frame, a placement rack at the front of the blackboard body, and a snap-fit ​​plate at the top, with a connector strip fixed to the inner wall of the snap-fit ​​plate, and the connecting rod movably snapping into the connector strip.

[0009] Furthermore, the wearing structure includes a wearing disc, a wearing band, a wearing shoulder strap, and a sleeve-type protective structure; the wearing band and the wearing shoulder strap are movably connected to the outside of the wearing disc via buckles, and the end of the wearing shoulder strap is detachably connected to the upper edge of the wearing band; an installation box is fixedly installed on the front side of the wearing disc, the sleeve-type protective structure is assembled on the front side of the installation box, and the recording device is fixedly connected to the wearing disc through the sleeve-type protective structure.

[0010] Furthermore, the socket-type protective structure includes a mounting base, a mounting top shell, and a connecting pin. The mounting base and the mounting top shell are movably engaged by the connecting pin to form a receiving cavity, and the recording device is embedded in the receiving cavity. A mounting insert is fixed to the back side of the mounting top shell. Fixing holes are provided on the side end of the mounting insert and the side end of the mounting sleeve. The mounting insert is engaged and fixed to the mounting sleeve by a fixing pin.

[0011] Furthermore, both the monitoring and recording devices are equipped with a built-in YOLOv7+DeepSORT algorithm module, which is used to track students' head posture, capture limb movements, and construct a three-dimensional limb movement model in real time; the recording device also integrates a facial expression recognition module, which is used to collect detailed data of students' facial expressions.

[0012] Furthermore, the classroom scene recognition module is used to extract classroom video features and voice features to identify the current classroom scene type; the student focus acquisition module is used to analyze the adaptability of student behavior characteristics to the classroom scene and calculate the effective interaction time ratio to obtain classroom focus; the student interaction quality acquisition module is used to calculate the student interaction quality index based on the standards of interaction accuracy, initiative, depth, and emotional investment; the classroom content analysis report generation module is used to generate an analysis report containing grade evaluation and improvement suggestions based on classroom focus and interaction quality index, and display it through the display screen.

[0013] Furthermore, the microphone is a 360-degree omnidirectional microphone, the monitoring probe is a high-resolution camera, and the monitoring probe and the microphone signal are synchronously transmitted to the classroom data acquisition module; the placement rack adopts a hollow structure, and its height is adapted to the writing area of ​​the blackboard.

[0014] Furthermore, the wearing band and shoulder straps are made of breathable and elastic material, and the buckle is an adjustable length buckle structure to adapt to the wearing needs of users of different body types.

[0015] Furthermore, the controller body also includes a memory and a processor. The memory stores computer programs that can be executed by the processor. The processor is used to call the various functional modules to realize classroom data collection, analysis, and report generation. The monitoring and recording devices support wired and wireless dual-mode data transmission with the controller body.

[0016] Compared with existing technologies, this invention provides an intelligent classroom assessment and feedback device driven by teaching behavior data, which has the following beneficial effects: This invention, through the installation of monitoring and recording devices, utilizes a mobile blackboard structure for the monitoring equipment, while the recording device is worn on the teacher's chest. The monitoring equipment captures real-time images of the classroom environment from the blackboard, recording student performance and interactions. The recording device, worn on the teacher's chest, collects detailed data on students' body movements and facial expressions. This multi-dimensional data is aggregated and analyzed by a control device, allowing for timely identification of strengths and weaknesses in the teaching process, such as the appropriateness of the teaching pace and the adequacy of teacher-student interaction. This enables targeted adjustments to teaching strategies and improved teaching quality. Simultaneously, student learning behavior data provides teachers with insights for optimizing instructional design, addressing individual student differences, and promoting personalized teaching, ultimately leading to an overall improvement in teaching quality and effective enhancement of student learning outcomes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the control device of the present invention; Figure 3 This is a schematic diagram of the movable blackboard structure of the present invention; Figure 4 This is a schematic diagram of the movable blackboard structure of the present invention; Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point A in the middle; Figure 6 This is a schematic diagram of the wearing structure of the present invention; Figure 7 This is a schematic diagram of the wearing structure of the present invention; Figure 8 This is a schematic diagram of the sleeve-type protective structure of the present invention; Figure 9 This is a schematic diagram of the structural system of the present invention.

[0018] In the diagram: 1. Control equipment; 101. Controller body; 102. Mounting base; 103. Microphone; 104. Display screen; 105. Control panel; 106. Mounting groove; 107. Power supply contact; 108. Magnetic block; 2. Monitoring equipment; 201. Mounting cover; 202. Connecting rod; 203. Monitoring probe; 204. Microphone; 3. Recording equipment; 4. Movable blackboard structure; 401. Blackboard body; 402. Movable frame; 403. Placement rack; 404. Snap-on plate; 405. Insertion strip; 5. Wearing structure; 501. Wearing tray; 502. Wearing strap; 503. Mounting sleeve; 504. Socket-type protective structure; 505. Wearing shoulder strap; 506. Fixing pin; 507. Mounting bottom shell; 508. Mounting top shell; 509. Connecting pin; 510. Mounting insert plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0020] like Figure 1-9As shown, an embodiment of the present invention proposes a teaching behavior data-driven intelligent classroom assessment and feedback device, including a control device 1, a mobile blackboard structure 4, a wearing structure 5, a monitoring device 2, and a recording device 3. The control device 1 includes a controller body 101, which integrates a classroom data acquisition module, a classroom scene recognition module, a student attention acquisition module, a student interaction quality acquisition module, and a classroom content analysis report generation module. The classroom scene recognition module is used to extract classroom video features and voice features to identify the current classroom scene type. The student attention acquisition module is used to analyze the adaptability of student behavior features to the classroom scene and calculate the percentage of effective interaction time to obtain classroom attention. The student interaction quality acquisition module is used to obtain classroom attention based on interaction accuracy, initiative, depth, and emotional investment. The system uses a weighted average of student interaction quality index and a class content analysis report generation module to generate an analysis report with graded assessments and improvement suggestions based on class focus and interaction quality index. This report is displayed on the screen 104. The controller body 101 has a screen 104 and a control panel 105 on its surface. Mounting grooves 106 are provided at the top and sides, with power supply contacts 107 and magnetic blocks 108 within each groove. The monitoring device 2 and recording device 3 are detachably mounted in the two mounting grooves 106 and electrically connected to the power supply contacts 107 and magnetically fixed to the magnetic blocks 108. The top of the mobile blackboard structure 4 has a connection point adapted to the monitoring device 2, and the front of the wearing structure 5 has a connection point adapted to the recording device 3.

[0021] Both the monitoring device 2 and the recording device 3 have built-in YOLOv7+DeepSORT algorithm modules, which are used to track students' head posture, capture limb movements and build three-dimensional limb movement models in real time; the recording device 3 also integrates a facial expression recognition module, which is used to collect detailed data of students' facial expressions.

[0022] like Figure 2 As shown, in some embodiments, the controller body 101 is fixedly connected to a mounting base 102 on its back side, and the controller body 101 is detachably connected to the support platform through the mounting base 102. A microphone 103 is fixedly installed on the top of the mounting base 102, and the microphone 103 is signal-connected to the classroom data acquisition module.

[0023] Specifically, the microphone 103 can collect all the sounds in the classroom, including the teacher's lecture, students' answers to questions, group discussions, etc., and perform real-time noise reduction on the speech data to extract clear student speech segments, label the identity information of the speaking students, and store them in time sequence for easy subsequent analysis of the relationship between speech tone and emotional expression.

[0024] The controller body 101 includes a computer device, a classroom data acquisition module, a classroom scene recognition module, a student attention acquisition module, a student interaction quality acquisition module, and a classroom content analysis report generation module.

[0025] Computer equipment includes memory and a processor. The memory stores computer programs that can be loaded and executed by the processor based on classroom content analysis methods.

[0026] The classroom data acquisition module is used to collect classroom video and audio data in real time.

[0027] The classroom scene recognition module is used to analyze the current classroom video and audio data, extract video and audio features, and identify and determine the current classroom scene.

[0028] The student attention acquisition module is used to analyze the current classroom video and audio data, extract the behavioral characteristics of students under the conditions of the interactive objects mapped to the current classroom scene, determine whether each student's behavior has generated effective interaction with the interactive objects mapped to the current classroom scene, calculate the ratio of the effective interaction time of each student's behavior with the interactive objects mapped to the current classroom scene to the total detection time, and calculate each student's classroom attention.

[0029] The student interaction quality acquisition module is used to analyze and determine the classroom video and audio data that generate effective interaction between each student's behavior and the corresponding interactive object in the current classroom scene, according to the preset interaction quality assessment standards that match the interactive objects mapped to the current classroom scene. These standards include at least one of the following: interaction accuracy standard, interaction initiative standard, interaction depth standard, and interaction emotional investment standard. The module then calculates the interaction quality index for each student using a weighted average.

[0030] The classroom content analysis report generation module is used to generate analysis reports on each student's classroom focus and interaction quality levels according to preset evaluation criteria and based on each student's classroom focus and interaction quality index.

[0031] like Figure 2 As shown, in some embodiments, the magnetic block 108 can be used to stably attach the monitoring device 2 and the recording device 3 in the mounting groove 106, while the power supply contact 107 abuts against the contact points of the monitoring device 2 and the recording device 3 to realize real-time power supply to the devices.

[0032] When it is necessary to remove the monitoring device 2 or the recording device 3 from the control device 1, only a certain pulling force is needed to overcome the attraction force of the magnetic block 108, which makes it easy to flexibly adjust the installation position of the device according to the actual teaching scenario.

[0033] like Figure 5As shown, in some embodiments, the monitoring device 2 includes a mounting cover 201, with a connecting rod 202 fixedly mounted at the bottom of the mounting cover 201, and a monitoring probe 203, a microphone 204, and a heat sink inside; the movable blackboard structure 4 includes a blackboard body 401 and a movable frame 402 fixed to its exterior, with two sets of self-locking casters at the bottom of the movable frame 402, a placement rack 403 on the front side of the blackboard body 401, and a snap-fit ​​plate 404 mounted on the top, with a connector strip 405 fixed to the inner wall of the snap-fit ​​plate 404, and the connecting rod 202 movably snapping into the connector strip 405; the wearing band 502 and the wearing shoulder strap 505 are made of breathable elastic material, and the buckle is an adjustable length buckle structure to adapt to the wearing needs of users of different body types.

[0034] Specifically, the high-resolution monitoring probe 203 and microphone 204 used in monitoring device 2 acquire classroom teaching video data and audio data, and convert classroom discussions, questions and answers into real-time content. When the class starts, the monitoring probe 203 is activated to record close-up of students' faces and full-body posture images in real time, capturing multiple frames of images per second to ensure that subtle changes in students' facial expressions and movements, such as sudden frowning, raising their heads, turning around, etc.

[0035] Natural language processing technology is used to perform semantic analysis on voice data to extract keywords, topics, and logical relationships in teacher-student dialogues.

[0036] Meanwhile, the microphone 204 is a 360-degree omnidirectional microphone, and the monitoring probe 203 is a high-resolution camera. The signals from the monitoring probe 203 and the microphone 204 are transmitted synchronously to the classroom data acquisition module. The placement rack 403 adopts a hollow structure, and its height is adapted to the writing area of ​​the blackboard body 401. It can clearly capture the speech of students in different positions in the classroom. Combined with the image captured by the monitoring probe 203, the position of the speaking student can be accurately located, realizing synchronous recording of audio and video.

[0037] The 203 surveillance camera fully records students' posture, hand-raising, and interactive behaviors, providing comprehensive video data support for subsequent classroom assessments.

[0038] A heat sink is also installed inside the mounting housing 201 to dissipate the heat generated by the monitoring probe 203 and microphone 204 during operation, ensuring stable operation of the equipment over a long period of time.

[0039] like Figure 4As shown, in some embodiments, the teacher can easily move the entire mobile blackboard structure 4 in the classroom by using the self-locking casters at the bottom of the mobile frame 402, and adjust the position of the blackboard body 401 according to teaching needs, such as moving it to the center of the classroom for convenient use during group discussions, or moving it near the window to enhance writing clarity using natural light.

[0040] Once the position is determined, pressing the brake pedal of the self-locking caster wheel will fix it in place and prevent the blackboard body 401 from sliding during use.

[0041] The shelf 403 on the front of the blackboard body 401 can be used to temporarily place teaching tools such as chalk boxes, erasers, and laser pointers, making them convenient for teachers to use and preventing tools from being scattered and affecting classroom order.

[0042] The shelf 403 features a hollow design to reduce dust accumulation, and its height is adapted to the writing area of ​​the blackboard body 401, so it will not obstruct the teacher's writing line of sight.

[0043] like Figure 5 As shown, in some embodiments, the movable snap-fit ​​structure of the plug strip 405 and the connecting rod 202 can be used to quickly install and remove the monitoring device 2 on the movable blackboard structure 4.

[0044] During installation, align the connecting rod 202 with the opening of the connector strip 405 and insert it until the bottom end of the connecting rod 202 abuts against the inside of the connector strip 405. At this point, the monitoring device 2 can be stably fixed on the top of the blackboard body 401.

[0045] During disassembly, simply lift the housing 201 upwards to disengage the connecting rod 202 from the connector strip 405. This operation is convenient and facilitates daily maintenance and storage of the equipment.

[0046] like Figure 7As shown, in some embodiments, the wearing structure 5 includes a wearing disc 501, a wearing band 502, a wearing shoulder strap 505, and a sleeve-type protective structure 504; the wearing band 502 and the wearing shoulder strap 505 are movably connected to the outside of the wearing disc 501 via a buckle, and the end of the wearing shoulder strap 505 is detachably connected to the upper edge of the wearing band 502; a mounting box 503 is fixedly installed on the front side of the wearing disc 501, and the sleeve-type protective structure 504 is assembled on the front side of the mounting box 503; the recording device 3 is fixedly connected to the wearing disc 501 through the sleeve-type protective structure 504; the sleeve-type protective structure 504 includes a... The system includes a base shell 507, a top shell 508, and a connecting pin 509. The base shell 507 and the top shell 508 are movably engaged by the connecting pin 509 to form a receiving cavity, in which the recording device 3 is embedded. A mounting plate 510 is fixed to the back of the top shell 508. Fixing holes are provided on the side of the mounting plate 510 and the side of the mounting sleeve 503. The mounting plate 510 is engaged and fixed to the mounting sleeve 503 by a fixing pin 506. The wearing band 502 and the wearing shoulder strap 505 are made of breathable and elastic material. The buckle is an adjustable length buckle structure to adapt to the wearing needs of users of different body types.

[0047] Specifically, by using the wearing band 502 and the wearing shoulder strap 505, the wearing disc 501 can be worn on the chest in the classroom. By adjusting the buckle, the length of the band and shoulder strap can be adjusted according to the teacher's body shape to ensure that the wearing disc 501 fits the body and does not shake. This ensures a stable shooting angle for the recording device 3 and does not hinder the teacher's teaching activities.

[0048] The 502 and 505 shoulder straps are made of breathable and skin-friendly elastic material, reducing discomfort from prolonged wear and maintaining a good wearing experience even in hot weather.

[0049] like Figure 7 As shown, in some embodiments, the sleeve-type protective structure 504 can form a stable enclosure and protection for the recording device 3, preventing it from being damaged by collisions during teacher movement or teaching operations.

[0050] The controller body 101 also includes a memory and a processor. The memory stores computer programs that can be executed by the processor. The processor is used to call the functional modules to realize classroom data collection, analysis and report generation. The monitoring device 2 and the recording device 3 support wired and wireless dual-mode data transmission with the controller body 101.

[0051] During installation, the recording device 3 is placed between the mounting base 507 and the mounting top 508, and the two are engaged by the connecting pin 509. Then, the mounting insert 510 on the back of the mounting top 508 is inserted into the mounting sleeve 503, aligning the mounting insert 510 with the fixing hole on the side of the mounting sleeve 503. Finally, the fixing pin 506 is inserted to complete the fixation. The entire installation process is simple and efficient, and the connection strength is high, which can ensure that the recording device 3 remains stable during wear.

[0052] When in use, first place the control device 1 on the lectern in the classroom, then take out the monitoring device 2 and the recording device 3 and install them respectively at the snap-fit ​​plate 404 at the top of the mobile blackboard structure 4 and the mounting box 503 of the wearing structure 5.

[0053] During installation, align the connecting rod 202 with the opening of the connector strip 405 and insert it until the bottom end of the connecting rod 202 abuts against the inside of the connector strip 405. At this point, the monitoring device 2 can be stably fixed to the top of the blackboard body 401. The teacher can wear the wearing disc 501 on the chest of the classroom by wearing the wearing structure 5, wearing the wearing band 502 and wearing shoulder strap 505. The length of the band and shoulder strap can be adjusted according to the teacher's body shape by adjusting the buckle, ensuring that the wearing disc 501 fits the body and does not shake. This ensures a stable shooting angle for the recording device 3 and does not hinder the teacher's teaching activities.

[0054] Meanwhile, the movable blackboard structure 4 can be flexibly moved and fixed according to the classroom layout requirements, so that the monitoring probe 203 of the monitoring device 2 can cover the entire teaching area.

[0055] After the class begins, the classroom data acquisition module of control device 1 is activated, and the monitoring probe 203 and microphone 204 of monitoring device 2 collect classroom video and audio data in real time, while recording device 3 simultaneously captures detailed data of students at close range.

[0056] These data are first analyzed in depth by the classroom scene recognition module of control device 1. This module can accurately capture and extract the behavioral characteristics of students in the video, such as posture, eye contact, and changes in movement. At the same time, it analyzes the semantic information in the speech signal, including the content of the answer, the frequency of questions, and changes in tone.

[0057] Subsequently, the student attention acquisition module calculates the proportion of effective interaction time in the total class time and combines behavioral characteristics and semantic information to quantify the student's attention level.

[0058] The student interaction quality acquisition module evaluates multiple dimensions of interaction, such as accuracy, initiative, and response speed, based on preset detailed standards, thereby generating a comprehensive interaction quality index.

[0059] Finally, the classroom content analysis report generation module combines the focus score with the interaction quality index, and uses a built-in algorithm to generate a detailed report that includes a rating, specific analysis, and improvement suggestions.

[0060] Teachers can view these dynamically updated reports in real time on the display screen 104, understand the classroom status in a timely manner, and adjust their teaching strategies based on the feedback in the reports, effectively achieving dynamic optimization and continuous improvement of the teaching process.

[0061] In summary, by setting up monitoring device 2 and recording device 3, monitoring device 2 can be connected to the mobile blackboard structure 4, while recording device 3 can be worn on the teacher's chest via a wearing structure 5. This allows monitoring device 2 to capture real-time images of the entire classroom environment from the blackboard, recording student performance and interaction. Meanwhile, the recording device 3 worn on the teacher's chest can collect detailed data on students' body movements and facial expressions at close range. This multi-dimensional data is aggregated and analyzed by control device 1, allowing for timely understanding of the strengths and weaknesses in the teaching process, such as whether the teaching pace is appropriate and whether teacher-student interaction is sufficient. This enables targeted adjustments to teaching strategies and improved teaching quality. Simultaneously, student learning behavior data can provide teachers with references for optimizing instructional design, addressing individual student differences, promoting personalized teaching, and ultimately achieving an overall improvement in teaching quality and effective improvement in student learning outcomes.

[0062] It should be noted that the specific models and specifications of the controller body 101, microphone 103, display screen 104, control panel 105, monitoring probe 203, microphone 204 and recording device 3 in the teaching behavior data-driven intelligent classroom assessment and feedback device need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0063] Furthermore, the power supply and principles of the controller body 101, microphone 103, display screen 104, control panel 105, monitoring probe 203, microphone 204 and recording device 3 in the teaching behavior data-driven intelligent classroom assessment and feedback device are clear to those skilled in the art and will not be described in detail here.

[0064] Furthermore, the working principles and wiring methods of the controller body 101, microphone 103, display screen 104, control panel 105, monitoring probe 203, microphone 204 and recording device 3 in the teaching behavior data-driven intelligent classroom assessment and feedback device are commonplace and belong to conventional means or common knowledge. They will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0065] In the idle area of ​​this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and adapted controllers and power supplies, are connected by wires. The electrical connections between the electrical components are completed in the order of their operation. The detailed connection methods are well known in the art.

[0066] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0067] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A teaching behavior data-driven intelligent classroom assessment and feedback device, characterized in that, The system includes a control device (1), a mobile blackboard structure (4), a wearing structure (5), a monitoring device (2), and a recording device (3). The control device (1) includes a controller body (101), which integrates a classroom data acquisition module, a classroom scene recognition module, a student attention acquisition module, a student interaction quality acquisition module, and a classroom content analysis report generation module. The controller body (101) has a display screen (104) and a control panel (105) on its surface. The top and side ends are respectively provided with mounting grooves (106). The mounting grooves (106) are provided with power supply contacts (107) and magnetic blocks (108). The monitoring device (2) and the recording device (3) are respectively detachably assembled in the two mounting grooves (106) and electrically connected to the power supply contacts (107) and magnetically fixed to the magnetic blocks (108). The top of the mobile blackboard structure (4) is provided with a connection point adapted to the monitoring device (2), and the front side of the wearing structure (5) is provided with a connection point adapted to the recording device (3).

2. The teaching behavior data-driven intelligent classroom assessment and feedback apparatus of claim 1, wherein, The controller body (101) is fixedly connected to the back of the mounting base (102). The controller body (101) is detachably connected to the support platform through the mounting base (102). A microphone (103) is fixedly installed on the top of the mounting base (102). The microphone (103) is connected to the classroom data acquisition module.

3. The teaching behavior data-driven intelligent classroom assessment and feedback apparatus of claim 1, wherein, The monitoring device (2) includes a mounting cover (201), a connecting rod (202) is fixedly installed at the bottom of the mounting cover (201), and a monitoring probe (203), a microphone (204) and a heat sink are provided inside; the movable blackboard structure (4) includes a blackboard body (401) and a movable frame (402) fixed to its exterior. The movable frame (402) is provided with two sets of self-locking casters at the bottom. The blackboard body (401) is provided with a placement rack (403) on the front side and a snap-fit ​​plate (404) is installed at the top. A plug strip (405) is fixed on the inner wall of the snap-fit ​​plate (404), and the connecting rod (202) is movably snapped into the plug strip (405).

4. The teaching behavior data-driven intelligent classroom assessment and feedback apparatus of claim 1, wherein, The wearing structure (5) includes a wearing plate (501), a wearing band (502), a wearing shoulder strap (505), and a sleeve-type protective structure (504); the wearing band (502) and the wearing shoulder strap (505) are movably connected to the outside of the wearing plate (501) by a buckle, and the end of the wearing shoulder strap (505) is detachably connected to the upper edge of the wearing band (502); an installation box (503) is fixedly installed on the front side of the wearing plate (501), and the sleeve-type protective structure (504) is assembled on the front side of the installation box (503), and the recording device (3) is fixedly connected to the wearing plate (501) through the sleeve-type protective structure (504).

5. The teaching behavior data-driven intelligent classroom assessment and feedback apparatus of claim 4, wherein, The socket-type protective structure (504) includes a mounting base (507), a mounting top shell (508), and a connecting pin (509). The mounting base (507) and the mounting top shell (508) are movably engaged by the connecting pin (509) to form a receiving cavity, and the recording device (3) is embedded in the receiving cavity. A mounting insert (510) is fixed on the back side of the mounting top shell (508). Fixing holes are opened on the side end of the mounting insert (510) and the side end of the mounting sleeve (503). The mounting insert (510) is engaged and fixed with the mounting sleeve (503) by a fixing pin (506).

6. The teaching behavior data-driven intelligent classroom assessment and feedback apparatus of claim 1, wherein, Both the monitoring device (2) and the recording device (3) are equipped with a YOLOv7+DeepSORT algorithm module, which is used to track the student's head posture, capture limb movements and build a three-dimensional limb movement model in real time; the recording device (3) is also equipped with a facial expression recognition module, which is used to collect detailed data of the student's facial expressions.

7. The teaching behavior data-driven smart classroom assessment and feedback apparatus of claim 1, wherein, The classroom scene recognition module is used to extract classroom video features and voice features to identify the current classroom scene type; the student focus acquisition module is used to analyze the adaptability of student behavior features to the classroom scene and calculate the effective interaction time ratio to obtain classroom focus; the student interaction quality acquisition module is used to calculate the student interaction quality index based on the standards of interaction accuracy, initiative, depth and emotional investment; the classroom content analysis report generation module is used to generate an analysis report containing grade evaluation and improvement suggestions based on classroom focus and interaction quality index, and display it through the display screen (104).

8. The teaching behavior data-driven intelligent classroom assessment and feedback apparatus of claim 3, wherein, The microphone (204) is a 360-degree omnidirectional microphone, the monitoring probe (203) is a high-resolution camera, and the signals of the monitoring probe (203) and the microphone (204) are synchronously transmitted to the classroom data acquisition module; the placement rack (403) adopts a hollow structure, and its height is adapted to the writing area of ​​the blackboard body (401).

9. The teaching behavior data-driven smart classroom assessment and feedback apparatus as claimed in claim 4, wherein, The wearing band (502) and the wearing shoulder strap (505) are made of breathable and elastic material, and the buckle is an adjustable length buckle structure to adapt to the wearing needs of users of different body types.

10. The teaching behavior data-driven smart classroom assessment and feedback apparatus of claim 1, wherein, The controller body (101) also includes a memory and a processor. The memory stores computer programs that can be executed by the processor. The processor is used to call the functional modules to realize classroom data collection, analysis and report generation. The monitoring device (2) and the recording device (3) support wired and wireless dual-mode data transmission with the controller body (101).

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