Homework test paper correcting machine based on laser printing

Abstract

The invention discloses a homework test paper correcting machine based on laser printing, and relates to the technical field of homework correcting. The homework test paper correcting machine based on laser printing comprises a work box, a controller and a data processing and analyzing device, a mainframe box is fixedly connected to the outer wall of the top of the work box, a laser structure is installed in the mainframe box, a camera is fixedly connected to the outer wall of the bottom of the mainframe box, and a storage table is arranged at the bottom of the work box; work is placed on the outer wall of the top of the storage table, and a test paper fixing module and a test paper flattening module are arranged at the top of the storage table. According to the invention, homework of various media can be corrected, a whole exercise book, a piece of test paper or a written exercise book can be corrected, the whole exercise book can be turned and changed at any time, the test paper can be automatically fed and continuously corrected without manual intervention, and after correction is completed, the whole exercise book, the test paper or the written exercise book can be corrected at any time. Statistical analysis can be carried out on question doing conditions of students.

Description

Technical Field

[0001] The invention relates to the technical field of homework marking, and in particular to a homework and test paper marking machine based on laser printing. Background Art

[0002] In the field of education, in order to help students master knowledge points, a large number of homework exercises are an indispensable and important part. Homework grading has become a core part of teachers' daily work to a large extent. Homework grading is repetitive work to a certain extent. Teachers often need to carefully grade homework with similar content one by one, which is trivial and arduous.

[0003] With the continuous advancement of science and technology, a new way of grading homework has emerged. By scanning students' course materials or test papers, obtaining test questions, and then using image recognition technology to identify the specific test questions in the test questions, the automatic grading of homework can be achieved with the help of big data analysis and matching functions. However, this electronic automatic grading method cannot directly present the correction marks on the students' original homework or test papers. Students cannot intuitively see the correction results on the homework or test papers. In order for students to obtain clear correction traces, it is usually necessary to use a secondary printing method to reprint the corrected content on the students' original test papers, which to a certain extent increases the complexity and time cost of the operation. Summary of the invention

[0004] The purpose of the present invention is to provide a homework and test paper grading machine based on laser printing, which solves the technical problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a homework and test paper grading machine based on laser printing, comprising a work box, a controller, and a data processing and analysis device, wherein the top outer wall of the work box is fixedly connected to a main box, a laser structure is installed inside the main box, a camera is fixedly connected to the bottom outer wall of the main box, a notch is opened at the bottom of the main box and is located at the bottom of the laser structure, a touch screen is fixedly connected to the front outer wall of the work box, and a placement port is provided at the bottom of the work box;

[0006] The touch screen includes a machine working display screen, a subjective question correction screen, and a machine operating parameter adjustment screen;

[0007] A storage platform is provided at the bottom of the work box, and workpieces are placed on the top outer wall of the storage platform. A test paper fixing module and a test paper leveling module are provided on the top of the storage platform.

[0008] The laser structure is provided with a laser generator, a laser alignment system, a laser modulator and a cooling system.

[0009] Preferably, the outer walls of both sides of the storage table are fixedly connected to mounting plates, the inner walls of the mounting plates are penetrated with a movable groove, movable block one and movable block two are slidably connected in the movable groove, the inner wall of the movable groove is rotatably connected to screw rod two, the outer wall of screw rod two is threadedly connected to the inner wall of movable block two, the outer wall of movable block one is slidably connected to the outer wall of screw rod two, one side outer wall of the mounting plate is fixedly connected to a motor, and the output shaft of the motor is fixedly connected to one end of screw rod two.

[0010] Preferably, the test paper fixing module includes a moving block 1, the inner wall of the moving block 1 is rotatably connected to a limiting bolt, when the limiting bolt is tightened, one end of the limiting bolt abuts against the top outer wall of the mounting plate, a cross frame 1 is fixedly connected between the outer walls of the two moving blocks 1, a pressure plate is provided at the bottom of the cross frame 1, an electric telescopic rod 1 is provided at the top of the cross frame 1, and one end of the electric telescopic rod 1 is fixedly connected to the top outer wall of the pressure plate.

[0011] Preferably, the top outer wall of the pressure plate is fixedly connected to a limiting rod 1, the outer wall of the limiting rod 1 is movably connected to the inner wall of the cross frame 1, the outer wall of the limiting rod 1 is sleeved with a spring 1, one end of the spring 1 is fixedly connected to the bottom outer wall of the cross frame 1, and the other end of the spring 1 is fixedly connected to the outer wall of the limiting rod 1.

[0012] Preferably, the test paper leveling module is arranged on one side of the test paper fixing module, and the test paper leveling module includes two moving blocks, and a cross frame two is fixedly connected between the outer walls of the two moving blocks two, a cross plate is arranged below the cross frame two, and a rotating roller is rotatably connected to the bottom of the cross plate, and an electric telescopic rod two is arranged on the top of the cross frame two, and the bottom end of the electric telescopic rod two is fixedly connected to the top outer wall of the cross plate.

[0013] Preferably, the inner wall of the second cross frame is movably connected to the second limit rod, the bottom end of the second limit rod is fixedly connected to the top outer wall of the cross plate, and the outer wall of the second limit rod and the second spring are arranged between the second cross frame and the cross plate.

[0014] Preferably, pressure sensors are provided at the bottom of the transverse plate and the pressure plate.

[0015] Compared with the related art, the laser printing-based homework and test paper grading machine provided by the present invention has the following beneficial effects:

[0016] 1. The present invention provides a homework and test paper grading machine based on laser printing, and the grading process is highly automated, from the placement, fixation, and leveling of test papers to image recognition, data processing and analysis, and laser grading of test papers, which greatly reduces manual intervention, significantly reduces the workload of teachers, improves the efficiency of test paper grading, and can quickly process a large number of test papers, saving a lot of time and energy for teachers.

[0017] 2. The present invention provides a homework test paper grading machine based on laser printing, which can flexibly adjust the position of the moving block one according to the width of the test paper to ensure that it can adapt to test papers of different sizes. The moving block one is fixed by tightening the limit bolt, and then the electric telescopic rod one is used to drive the pressure plate to firmly press the test paper on the storage table. This method can effectively prevent the test paper from being displaced in subsequent operations, and provides a stable foundation for subsequent test paper processing.

[0018] 3. The present invention provides a homework test paper grading machine based on laser printing. After the test paper is fixed, the rotating roller contacts the surface of the test paper, and the motor drives the screw rod 1 to move the moving block 2. The rotating roller rotates to smooth the wrinkles of the test paper, which can efficiently keep the test paper flat, which is conducive to the subsequent image recognition module to accurately collect the test paper image, improves the accuracy and reliability of image recognition, and thus improves the accuracy of the grading results.

[0019] 4. The present invention provides a homework and test paper grading machine based on laser printing, which realizes the grading of homework in various media, including a whole exercise book, test papers, or written exercise books. For the whole exercise book, we can realize the grading as we turn the pages, and for the test papers, we can realize automatic paper feeding and continuous grading without manual intervention. After the grading is completed, we can also conduct statistical analysis on the students' test results, and finally hand them over to the teaching APP commonly used by teachers for recording, so as to facilitate teachers to improve teaching methods.

[0020] 5. The present invention provides a homework and test paper grading machine based on laser printing, which can realize printing during the scanning stage, solving the problem that the traditional scanning and printing processes are often independent of each other and need to complete the scanning operation first and then start printing separately. It simplifies the homework grading process and significantly improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of a partially cutaway structure of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the storage table of the present invention;

[0024] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0025] Figure 5 This is a schematic diagram of the structure of a horizontal frame of the present invention;

[0026] Figure 6 It is a schematic diagram of the second structure of the horizontal frame of the present invention;

[0027] Figure 7 It is a schematic diagram of the two-position flip structure of the horizontal frame of the present invention;

[0028] Figure 8 It is a structural block diagram of the present invention;

[0029] Fig. 9 This is a structural block diagram of embodiment 2 of the present invention.

[0030] In the figure: 1. working box; 2. main box; 201. laser structure; 202. camera; 203. notch; 3. placement port; 4. touch screen; 401. machine working display screen; 402. subjective question correction screen; 403. machine operation parameter adjustment screen; 5. storage table; 6. operation; 7. mounting plate; 8. moving slot; 9. screw rod 2; 10. motor; 11. moving block 1; 12. limiting bolt; 13. cross frame 1; 14. pressure plate; 15. electric telescopic rod 1; 16. limiting rod 1; 17. spring 1; 18. moving block 2; 19. cross frame 2; 20. cross plate; 21. rotating roller; 22. electric telescopic rod 2; 23. limiting rod 2; 24. spring 2. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] Embodiment 1:

[0033] See also Figure 1-Figure 8 The present invention provides a technical solution: a homework and test paper grading machine based on laser printing, comprising a work box 1, a controller, and a data processing and analysis device. The top outer wall of the work box 1 is fixedly connected with a main box 2, a laser structure 201 is installed inside the main box 2, a camera 202 is fixedly connected with the bottom outer wall of the main box 2, two cameras 202 are arranged on both sides of the laser structure 201, and dual-lens image error correction recognition is adopted. A notch groove 203 is opened at the bottom of the main box 2 and located at the bottom of the laser structure 201, a touch screen 4 is fixedly connected with the front outer wall of the work box 1, and a placement port 3 is arranged at the bottom of the work box 1;

[0034] The touch screen 4 includes a machine working display screen 401, a subjective question correction screen 402, and a machine operating parameter adjustment screen 403; the machine working display screen 401 will display the status of the test paper in the machine, and the screen inside the machine can be seen; the subjective question correction screen 402 is used to identify the content on the test paper, and the teacher can correct the subjective questions directly on the screen; the machine operating parameter adjustment screen 403 is used to adjust the operating parameters of the machine.

[0035] A storage table 5 is provided at the bottom of the work box 1, and test papers are placed on the top outer wall of the storage table 5. A test paper fixing module and a test paper leveling module are provided on the top of the storage table 5;

[0036] The laser structure 201 is provided with a laser generator, a laser alignment system, a laser modulator, and a cooling system.

[0037] In this embodiment, the test paper is placed on the top of the storage table 5, pressed by the test paper fixing module, flattened by the test paper flattening module, identified and scanned by the camera 202, processed by the visual system, and the identified content is compared with the answer in the data processing and analysis equipment and recorded. For the content that needs to be corrected and the score to be scored, the content is marked to the corresponding correction position through the laser galvanometer, the complete status of the student's answer to each question is recorded, the data is sorted out, and output to the APP used by the teacher through the corresponding interface.

[0038] After receiving the digital image information of the test paper from the image recognition module, the data processing and analysis equipment uses the pre-written algorithms and programs inside it to identify and analyze the test paper content and extract the answer information of the test paper; at the same time, the data processing and analysis equipment retrieves the standard answers corresponding to the current test paper from the standard answer database stored inside it, compares the answer information of the test paper with the standard answers in detail, determines the answer situation of each question in the test paper, and gives the corresponding score and correction results.

[0039] The data processing and analysis equipment transmits the obtained correction results to the controller. The controller sends a control instruction to the laser structure 201 according to the received correction results. The laser generator in the laser structure 201 generates a laser beam. The modulated laser beam is focused onto the surface of the test paper 6 through the optical system of the laser structure 201. According to the correction results given by the data processing and analysis equipment, corresponding marks are made on the test paper, such as marking wrong answers, giving scores, adding correction symbols, etc., to complete the correction work of the test paper.

[0040] Among them, the outer walls of both sides of the storage table 5 are fixedly connected with the mounting plates 7, the inner wall of the mounting plate 7 is penetrated with a movable groove 8, the movable block 11 and the movable block 2 18 are slidably connected in the movable groove 8, the inner wall of the movable groove 8 is rotatably connected with the screw rod 2 9, the outer wall of the screw rod 2 9 is threadedly connected to the inner wall of the movable block 2 18, the outer wall of the movable block 11 is slidably connected to the outer wall of the screw rod 2 9, and the outer wall of one side of the mounting plate 7 is fixedly connected with the motor 10, and the output shaft of the motor 10 is fixedly connected to one end of the screw rod 2 9.

[0041] Among them, the test paper fixing module includes a moving block 11, the inner wall of the moving block 11 is rotatably connected to a limiting bolt 12, when the limiting bolt 12 is tightened, one end of the limiting bolt 12 abuts against the top outer wall of the mounting plate 7, a cross frame 13 is fixedly connected between the outer walls of the two moving blocks 11, a pressure plate 14 is arranged at the bottom of the cross frame 13, an electric telescopic rod 15 is arranged at the top of the cross frame 13, and one end of the electric telescopic rod 15 is fixedly connected to the top outer wall of the pressure plate 14.

[0042] In this embodiment, the test paper is placed on the top of the storage table 5, and the position of the moving block 11 is adjusted according to the width of the test paper. The moving block 11 moves in the moving groove 8. After adjusting to the appropriate position, the limit bolt 12 is tightened to fix the moving block 11, and then the electric telescopic rod 15 is started. The electric telescopic rod 15 extends downward and pushes the pressure plate 14 to move toward the test paper. Finally, the pressure plate 14 presses and fixes the test paper on the storage table 5 to ensure that the test paper will not move during subsequent operations.

[0043] Among them, the top outer wall of the pressure plate 14 is fixedly connected to a limiting rod 16, the outer wall of the limiting rod 16 is movably connected to the inner wall of the cross frame 13, the outer wall of the limiting rod 16 is sleeved with a spring 17, one end of the spring 17 is fixedly connected to the bottom outer wall of the cross frame 13, and the other end of the spring 17 is fixedly connected to the outer wall of the limiting rod 16.

[0044] In this embodiment, the limiting rod 16 limits the movement of the pressing plate 14 to ensure that the pressing plate 14 moves up and down smoothly.

[0045] Among them, the test paper leveling module is arranged on one side of the test paper fixing module, and the test paper leveling module includes a moving block 18, a cross frame 19 is fixedly connected between the outer walls of the two moving blocks 18, a cross plate 20 is arranged below the cross frame 19, and the bottom of the cross plate 20 is rotatably connected to a rotating roller 21, and an electric telescopic rod 22 is arranged on the top of the cross frame 19, and the bottom end of the electric telescopic rod 22 is fixedly connected to the top outer wall of the cross plate 20.

[0046] In this embodiment, after the test paper is fixed, the electric telescopic rod 22 on the top of the second horizontal frame 19 is started, and the electric telescopic rod 22 extends downward, pushing the horizontal plate 20 and the rotating roller 21 connected to the bottom of the horizontal plate 20 to move downward until the rotating roller 21 contacts the surface of the test paper. In this process, the limit rod 23 moves downward in the inner wall of the second horizontal frame 19, and the spring 24 is compressed. Subsequently, the motor 10 is started, the motor 10 drives the screw rod 29 to rotate, the screw rod 29 drives the moving block 218 to move to one side, and the rotating roller 21 rotates to smooth the wrinkles on the surface of the test paper, so that the test paper remains flat, so as to facilitate accurate image recognition and correction in the subsequent process.

[0047] Among them, the inner wall of the second cross frame 19 is movably connected to the limiting rod 23, the bottom end of the limiting rod 23 is fixedly connected to the top outer wall of the cross plate 20, and the outer wall of the limiting rod 23 and the second spring 24 are arranged between the second cross frame 19 and the cross plate 20.

[0048] In this embodiment, the limiting rod 23 limits the movement of the transverse plate 20 to ensure the smooth up and down movement of the transverse plate 20.

[0049] The bottoms of the transverse plate 20 and the pressure plate 14 are both provided with pressure sensors.

[0050] In this embodiment, the pressure sensor at the bottom of the pressing plate 14 can monitor the pressure applied to the test paper in real time. When the electric telescopic rod 15 pushes the pressing plate 14 to press down and fix the test paper, the pressure sensor can feedback the pressure data to avoid the test paper being loosely fixed due to too little pressure or being damaged by too much pressure.

[0051] Embodiment 2:

[0052] See also Figure 2 and Fig. 9 As shown, on the basis of the first embodiment, the present invention provides a technical solution: a homework test paper grading machine based on laser printing, comprising a work box 1, a controller, and a data processing and analysis device, the top outer wall of the work box 1 is fixedly connected with a main box 2, a laser structure 201 is installed inside the main box 2, a camera 202 is fixedly connected to the bottom outer wall of the main box 2, a notch groove 203 is opened at the bottom of the main box 2 and located at the bottom of the laser structure 201, a touch screen 4 is fixedly connected to the front outer wall of the work box 1, and a placement port 3 is provided at the bottom of the work box 1;

[0053] The touch screen 4 includes a machine working display screen 401, a subjective question correction screen 402, and a machine operating parameter adjustment screen 403;

[0054] The workpiece 6 is placed at the bottom of the work box 1; the laser structure 201 is provided with a laser generator, a laser alignment system, a laser modulator, and a cooling system.

[0055] In this implementation scheme, the teacher places the homework at the placement port 3, identifies and scans the homework through the camera 202, processes it using the visual system, compares and records the identified content with the answers in the data processing and analysis equipment, and uses a laser galvanometer to mark the content that needs to be corrected and the scores to be given to the corresponding correction positions, records the student's complete status of each question, organizes the data, and outputs it to the APP used by the teacher through the corresponding interface. The homework is in books, and when a page is corrected, the page is turned manually.

[0056] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A homework and test paper grading machine based on laser printing, comprising a work box (1), a controller, and data processing and analysis equipment, characterized in that: The top outer wall of the working box (1) is fixedly connected to a main box (2), a laser structure (201) is installed inside the main box (2), a camera (202) is fixedly connected to the bottom outer wall of the main box (2), a notch groove (203) is provided at the bottom of the main box (2) and is located at the bottom of the laser structure (201), a touch screen (4) is fixedly connected to the front outer wall of the working box (1), and a placement opening (3) is provided at the bottom of the working box (1); The touch screen (4) includes a machine working display screen (401), a subjective question correction screen (402), and a machine operation parameter adjustment screen (403); A storage platform (5) is provided at the bottom of the work box (1), a workpiece (6) is placed on the top outer wall of the storage platform (5), and a test paper fixing module and a test paper leveling module are provided on the top of the storage platform (5); The laser structure (201) is provided with a laser generator, a laser alignment system, a laser modulator and a cooling system.

2. The laser printing-based examination paper grading machine according to claim 1, characterized in that: The outer walls of both sides of the storage table (5) are fixedly connected to a mounting plate (7), the inner wall of the mounting plate (7) is penetrated by a movable groove (8), a movable block (11) and a movable block (18) are slidably connected in the movable groove (8), the inner wall of the movable groove (8) is rotatably connected to a screw rod (9), the outer wall of the screw rod (9) is threadedly connected to the inner wall of the movable block (18), the outer wall of the movable block (11) is slidably connected to the outer wall of the screw rod (9), and a motor (10) is fixedly connected to the outer wall of one side of the mounting plate (7), and the output shaft of the motor (10) is fixedly connected to one end of the screw rod (9).

3. The laser printing-based examination paper grading machine according to claim 2, characterized in that: The test paper fixing module comprises a moving block (11), the inner wall of the moving block (11) is rotatably connected to a limiting bolt (12), when the limiting bolt (12) is tightened, one end of the limiting bolt (12) abuts against the top outer wall of the mounting plate (7), a cross frame (13) is fixedly connected between the outer walls of the two moving blocks (11), a pressure plate (14) is arranged at the bottom of the cross frame (13), an electric telescopic rod (15) is arranged at the top of the cross frame (13), and one end of the electric telescopic rod (15) is fixedly connected to the top outer wall of the pressure plate (14).

4. The laser printing-based examination paper grading machine according to claim 3, characterized in that: The top outer wall of the pressure plate (14) is fixedly connected to a limiting rod (16), the outer wall of the limiting rod (16) is movably connected to the inner wall of the cross frame (13), the outer wall of the limiting rod (16) is sleeved with a spring (17), one end of the spring (17) is fixedly connected to the bottom outer wall of the cross frame (13), and the other end of the spring (17) is fixedly connected to the outer wall of the limiting rod (16).

5. The laser printing-based examination paper grading machine according to claim 1, characterized in that: The test paper leveling module is arranged on one side of the test paper fixing module, and the test paper leveling module comprises a second moving block (18), a second cross frame (19) is fixedly connected between the outer walls of the two moving blocks (18), a cross plate (20) is arranged below the second cross frame (19), a rotating roller (21) is rotatably connected to the bottom of the cross plate (20), and an electric telescopic rod (22) is arranged on the top of the second cross frame (19), and the bottom end of the electric telescopic rod (22) is fixedly connected to the top outer wall of the cross plate (20).

6. The laser printing-based examination paper grading machine according to claim 5, characterized in that: The inner wall of the second cross frame (19) is movably connected to the second limit rod (23), the bottom end of the second limit rod (23) is fixedly connected to the top outer wall of the cross plate (20), and the outer wall of the second limit rod (23) and located between the second cross frame (19) and the cross plate (20) are provided with a second spring (24).

7. The laser printing-based examination paper grading machine according to claim 6, characterized in that: Pressure sensors are provided at the bottom of the transverse plate (20) and the pressure plate (14).

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