Multimedia interactive teaching control system and teaching control method

Abstract

The invention discloses a multimedia interactive teaching control system and a teaching control method, and relates to the technical field of control, the multimedia interactive teaching control system comprises an initialization module, an experiment step control module, an experiment apparatus control module, an experiment reagent control module, an analysis module and a database, through initialization, an operation document is generated, and the operation document is stored in the database; the method comprises the following steps: generating a plurality of experimental apparatuses and experimental reagents at the same time, detecting experimental steps of students, detecting whether the selected experimental apparatuses and experimental reagents are correct or not, judging whether the use of the experimental apparatuses and experimental reagents is standard or not at the same time, and when errors exist or the use is not standard, prompting and analyzing reasons for solving the errors or the use is not standard. Whether each student masters the experiment or not is judged, and secondary experiment operation is performed, so that the experiment operation of each student is effectively guided and the success rate of the experiment is ensured, the accuracy of the experiment equipment and the experiment reagent selected by the student is also ensured, and the mastering degree of each student on the experiment is obtained.

Description

Technical Field

[0001] The present invention relates to the field of control technology, and in particular to a multimedia interactive teaching control system and a teaching control method. Background Art

[0002] With the rapid development of multimedia technology, multimedia teaching has gradually become a new teaching method. However, the existing multimedia teaching system lacks integration with student experiments, resulting in students being unable to receive timely and effective guidance when conducting experiments. Therefore, a control system and method that can combine multimedia teaching and experiments is needed.

[0003] The traditional multimedia interactive teaching control system and teaching control method are that the teacher guides the students to perform experimental operations through the teaching control system. During the students' experimental operations, the teacher monitors the students' operations through the host control software and corrects the students' incorrect operations in time. Obviously, this multimedia interactive teaching control system and teaching control method have at least the following shortcomings: 1. In the traditional multimedia interactive teaching control system and teaching control method, the teacher observes whether there are errors in the experimental operations of each student through the monitoring system. When the teacher observes, it cannot be ensured that each student's experimental operations can be observed by the teacher, and it cannot be guaranteed that each student's experimental operations can receive effective guidance and the success rate of the experiment.

[0004] 2. In the traditional multimedia interactive teaching control system and teaching control method, when the teacher observes the experimental operations of each student through the monitoring system, the teacher may not be able to identify whether the experimental equipment and experimental reagents selected by each student meet the requirements, and cannot guarantee the accuracy of the experimental equipment and experimental reagents selected by the students.

[0005] 3. In the traditional multimedia interactive teaching control system and teaching control method, after each student completes the experimental operation, there is no analysis of each student's mastery of the experiment based on the operation data of each student during the experiment. After the experiment, it is impossible to know the degree of mastery of the experiment by each student. Summary of the invention

[0006] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a multimedia interactive teaching control system and a teaching control method.

[0007] To solve the above technical problems, the present invention adopts the following technical solutions: The first aspect of the present invention provides a multimedia interactive teaching control system, including an initialization module, an experimental step control module, an experimental equipment control module, an experimental reagent control module, an analysis module and a database.

[0008] The initialization module is used to automatically generate the operation document of the experiment and send it to each student after the teacher enters the subject name and experiment name in the system. At the same time, it generates several experimental equipment and experimental reagents and encodes them.

[0009] The experimental step control module is used to obtain the operation actions of each student in each experimental step, and to determine whether each experimental step of each student is correct. When an error occurs in an experimental step of a student, the student is prompted.

[0010] The experimental equipment control module is used to obtain the experimental equipment selected by each student in each experimental step, and analyze whether the experimental equipment selected by each student in each experimental step is correct. If not, the students who have selected the wrong experimental equipment will be warned and prompted with the required experimental equipment. If correct, the video of each student using the experimental equipment will be obtained, and it will be analyzed whether each student uses the experimental equipment correctly, and the reasons why each student uses the equipment incorrectly will be analyzed, and solutions will be formulated at the same time.

[0011] The experimental reagent control module is used to obtain the experimental reagents selected by each student in each experimental step, analyze whether the experimental reagents selected by each student in each experimental step are correct, and if not, warn each student who selects the experimental reagent incorrectly and prompt the required experimental reagents. If correct, obtain the video of each student using each experimental reagent in each experimental step, analyze whether the use of each experimental reagent in each experimental step by each student is standard, and if not, analyze whether the experimental reagents without standard use are directly obtained, and formulate solutions.

[0012] The analysis module is used to obtain the experimental data of each student during the experiment, analyze the success coefficient of each student's experiment, determine whether each student has mastered the experiment, and guide each student who has not mastered the experiment to conduct a secondary experiment.

[0013] The database is used to store the names of various disciplines, the names of various experiments, the codes of various experimental equipment, the names of various experimental equipment, and the preset numerical thresholds of various data.

[0014] The second aspect of the present invention provides a teaching control method based on a multimedia interactive teaching control system, comprising the following steps: Step 1, initialization: When the teacher enters the subject name and experiment name in the system, the operation document of the experiment is automatically generated and sent to each student, and a number of experimental equipment and experimental reagents are generated and encoded.

[0015] Step 2: Control the experimental steps: obtain the operation actions of each student in each experimental step, and judge whether each student's experimental steps are correct. When an error occurs in an experimental step of a student, prompt the student.

[0016] Step 3. Control experimental equipment: obtain the experimental equipment selected by each student in each experimental step, and analyze whether the experimental equipment selected by each student in each experimental step is correct. If not, warn each student who has selected the wrong experimental equipment and prompt the required experimental equipment. If correct, obtain the video of each student using the experimental equipment, analyze whether each student uses the experimental equipment correctly, analyze the reasons why each student uses the equipment incorrectly, and formulate solutions.

[0017] Step 4. Control experimental reagents: obtain the experimental reagents selected by each student in each experimental step, and analyze whether the experimental reagents selected by each student in each experimental step are correct. If not, warn each student who selected the experimental reagents incorrectly and prompt the required experimental reagents. If correct, obtain the video of each student using the experimental reagents in each experimental step, and analyze whether the use of each experimental reagent in each experimental step is standard. If not, analyze whether the experimental reagents without standard use are directly obtained, and formulate solutions.

[0018] Step 5: Analysis: Obtain the experimental data of each student during the experiment, analyze the success coefficient of each student's experiment, determine whether each student has mastered the experiment, and guide each student who has not mastered the experiment to conduct a second experiment.

[0019] The beneficial effects of the present invention are as follows: the purpose of the present invention is to provide a multimedia interactive teaching control system and a teaching control method, which generates operation documents through initialization, and generates a number of experimental equipment and experimental reagents at the same time, detects whether the experimental steps of each student, the selected experimental equipment and each experimental reagent are correct, and at the same time determines whether the use of each experimental equipment and each experimental reagent is standard. When there is an error or non-standard use, prompts are given, and the causes are analyzed and resolved, and it is determined whether each student has mastered the experiment, and a secondary experimental operation is performed to ensure that each student's experimental operation is effectively guided and the success rate of the experiment is guaranteed, and the accuracy of the experimental equipment and experimental reagents selected by the students is guaranteed, and at the same time, the degree of mastery of the experiment by each student is obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the system structure connection of the present invention.

[0022] Figure 2 The present invention is a schematic flow chart of the steps for implementing the method. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1 As shown, the first aspect of the present invention provides a multimedia interactive teaching control system, which includes an initialization module, an experimental step control module, an experimental equipment control module, an experimental reagent control module, an analysis module and a database.

[0025] The initialization module is connected to the experimental step control module, the experimental step control module is connected to the experimental equipment control module, the experimental equipment control module is connected to the experimental reagent control module, the experimental reagent control module is connected to the analysis module, and the database is connected to the initialization module, the experimental step control module, the experimental equipment control module, the experimental reagent control module and the analysis module.

[0026] The initialization module is used to automatically generate the operation document of the experiment and send it to each student after the teacher enters the subject name and experiment name in the system. At the same time, it generates several experimental equipment and experimental reagents and encodes them.

[0027] It should be noted that the coding of each experimental equipment and the coding of each experimental reagent are implemented at the software level, and the coding of each experimental equipment and each experimental reagent is carried out separately.

[0028] In a specific embodiment, the operation document of the experiment is automatically generated, and the specific process is as follows: after the teacher enters the subject name and experiment name in the system, the entered subject and experiment name are compared with the subject and experiment name of each experiment in the database. If the entered subject is the same as the subject to which a certain experiment in the database belongs, and the entered experiment name is the same as the experiment name of the experiment in the database, it means that the experiment that each student needs to do is this experiment. At this time, the experimental steps, precautions and required knowledge points of the experiment are read from the database to generate an operation document.

[0029] The experimental step control module is used to obtain the operation actions of each student in each experimental step, and to determine whether each experimental step of each student is correct. When an error occurs in an experimental step of a student, the student will be prompted.

[0030] In a specific embodiment, it is described and judged whether each experimental step of each student is correct, and the specific process is as follows: a high-definition camera is installed in the multimedia, and when each student performs the experimental operation according to the experimental steps, the operation video of each student in each experimental step is collected, transmitted to the system, and the operation action of each student in each experimental step is output, and the operation action of each student in each experimental step is compared with the operation action in each experimental step in the operation document. If the operation action of a student in a certain experimental step is different from the operation action in the experimental step in the operation document, it means that the experimental step of the student is wrong. At this time, the student is warned and prompted with the correct operation steps. If the operation action in each experimental step of a student is the same as the operation action in the experimental step in the operation document, it means that the experimental step of the student is correct. This method is used to judge whether each experimental step of each student is correct.

[0031] It should be noted that a machine learning model is integrated into the system, and the operating actions of each student in each experimental step are analyzed through the machine learning model.

[0032] The experimental equipment control module is used to obtain the experimental equipment selected by each student in each experimental step, and analyze whether the experimental equipment selected by each student in each experimental step is correct. If not, the students who have selected the wrong experimental equipment will be warned and prompted with the required experimental equipment. If correct, the video of each student using the experimental equipment will be obtained, and whether each student uses the experimental equipment correctly will be analyzed. The reasons for each student's incorrect use of the equipment will be analyzed, and solutions will be formulated at the same time.

[0033] In a specific embodiment, the specific process of the experimental equipment control module is as follows: S11, when each student uses each experimental equipment, obtain the experimental equipment code selected by each student in each experimental step, and at the same time collect the video of each student using each experimental equipment in each experimental step, input it into the system, and output the operation data of each student when using each experimental equipment in each experimental step.

[0034] It should be noted that when each student selects each experimental equipment, the system automatically records the code of each selected experimental equipment and saves it.

[0035] S12. Compare the experimental equipment codes used by each student in each experiment with the experimental equipment codes in the database. If a selected experimental equipment code is the same as an experimental equipment code in the database, read the name of the experimental equipment from the database. In this way, obtain the names of the experimental equipment selected by each student in each experimental step, and compare them with the experimental equipment required for each step in the operation document. If the names of the experimental equipment selected by a student in a certain experimental step are the same as the names of the experimental equipment required for the experimental step in the operation document, it means that the experimental equipment selected by the student in the step is correct. If the name of an experimental equipment used by a student in a certain experimental step is different from the names of the experimental equipment required for the experimental step in the operation document, it means that the experimental equipment selected by the student in the step is incorrect. At this time, the student is warned and prompted with the experimental equipment required for the experimental step. In this way, whether the experimental equipment of each student in each experimental step is correct is obtained.

[0036] S13. Compare the operation data of each student when using each experimental equipment with the operation data of each experimental equipment in the operation document. If the operation data of a student when using a certain experimental equipment are the same as the operation data of the experimental equipment in the operation document, it means that the student uses the experimental equipment correctly. If a certain operation data of a student when using a certain experimental equipment is different from the operation data corresponding to the experimental equipment in the operation document, it means that the student does not use the experimental equipment correctly. The student is called a primary error student and the experimental equipment is called an erroneous equipment. This method is used to judge whether each student uses each experimental equipment correctly.

[0037] It should be noted that each operation data includes moving speed, moving direction, moving trajectory and relative position, etc.

[0038] S14. Analyze the reasons why each primary student made mistakes and did not use the equipment correctly, and solve them.

[0039] In the above, the reasons why each primary student who makes an error does not use each incorrect equipment correctly are analyzed and resolved. The specific process is as follows: S21. Use electromyography sensors to collect the signal values ​​of the hand muscles of each primary student who makes an error when using each incorrect equipment, and compare them with the preset hand muscle signal value ranges. If a signal value of a hand muscle of a primary student who makes an error is not within the preset hand muscle signal value range when using a certain incorrect equipment, it means that the reason why the primary student who makes an error does not use the incorrect equipment correctly is an objective reason. If the signal values ​​of the hand muscles of a primary student who makes an error are all within the preset hand muscle signal value range when using a certain incorrect equipment, it means that the reason why the primary student who makes an error does not use the incorrect equipment correctly is a subjective reason. This method is used to determine the reasons why each primary student who makes an error does not use the incorrect equipment correctly.

[0040] It should be noted that the electromyographic sensors are placed on the hands of each student, and the signals of the hand muscles of each student are collected in real time when each student is conducting the experiment.

[0041] It should also be noted that the various signals of the hand muscles include action potential signals, recruitment mode signals and co-contraction signals.

[0042] It should also be noted that the designers obtained the normal range of the numerical values ​​of each hand muscle signal through multiple experiments and set it as the preset range of the numerical values ​​of each hand muscle signal.

[0043] S23. When the reason why a primary student who makes mistakes does not use a certain wrong equipment correctly is a subjective reason, the student is prompted with the correct method of using the wrong equipment. When the reason why a primary student who makes mistakes does not use a certain wrong equipment correctly is an objective reason, the operation data of the primary student who makes mistakes when using the wrong equipment is obtained, and the analysis formula is used: Get the correlation coefficient of the g-th operation data of the a-th primary error student when using the b-th error equipment Where H abg represents the g-th operation data of the a-th primary error student using the b-th error equipment, H b ' grepresents the g-th operation data of the b-th incorrect equipment in the operation document, a represents the number of each primary student who makes mistakes, a=1,2,3,...,e, e represents the total number of primary students who make mistakes, b represents the number of each incorrect equipment, b=1,2,3,...,f, f represents the total number of incorrect equipment, g represents the number of each operation data, g=1,2,3,...,h, h represents the total number of operation data, a, e, b, f, g and h are all positive integers, at this time, according to the relationship coefficient of each operation data of each primary student who makes mistakes when using each incorrect equipment, the operation data of each primary student who makes mistakes when using each incorrect equipment is adjusted in real time.

[0044] It should be noted that the operation data of each primary student who makes mistakes when using each incorrect equipment is adjusted in real time. For example, when a primary student who makes mistakes is using a certain incorrect equipment, the value of the relationship coefficient of each operation data is obtained and used as the adjustment multiple. Each operation data is multiplied by the adjustment multiple corresponding to each operation data to obtain the operation data when the incorrect equipment is used correctly, and the incorrect equipment is controlled according to the operation data of correct use.

[0045] It should also be noted that the objective reason is that each student used the experimental equipment incorrectly due to their own physical reasons, and the subjective reason is that each student used the experimental equipment incorrectly due to operational errors.

[0046] It should also be noted that the operation data of each experimental equipment in the operation document is set by an expert.

[0047] The experimental reagent control module is used to obtain the experimental reagents selected by each student in each experimental step, and analyze whether the experimental reagents selected by each student in each experimental step are correct. If not, the students who selected the experimental reagents incorrectly will be warned and prompted with the required experimental reagents. If correct, the video of each student using the experimental reagents in each experimental step will be obtained, and the use of each experimental reagent in each experimental step by each student will be analyzed to determine whether it is standard. If not, the experimental reagents that are not used in a standard way will be analyzed to determine whether they are directly obtained, and solutions will be developed.

[0048] In a specific embodiment, the analysis of whether the experimental reagents selected by each student in each experimental step are correct is as follows: S31, obtaining the experimental reagent code selected by each student in each experimental step, and comparing it with the code of each experimental reagent in the database. If the code of an experimental reagent selected by a student in a certain experimental step is the same as the code of an experimental reagent in the database, it means that the experimental reagent selected by the student in the experimental step is the experimental reagent. In this way, the experimental reagents selected by each student in each experimental step are obtained.

[0049] It should be noted that when each student selects each experimental reagent, the system automatically records the code of each selected experimental reagent and saves it.

[0050] S32. Compare the experimental reagents selected by each student in each experimental step with the experimental reagents required for each step in the operation document. If the experimental reagents selected by a student in a certain experimental step are the same as the experimental reagents required for the experimental step in the operation document, it means that the experimental reagents selected by the student in the experimental step are correct. If there is an experimental reagent among the experimental reagents selected by a student in a certain experimental step that is different from the experimental reagents in the experimental step in the operation document, it means that the experimental reagent selected by the student in the experimental step is wrong. At this time, the student is prompted with the experimental reagents required for the step. This method is used to determine whether the experimental reagents selected by each student in each experimental step are correct.

[0051] In another specific embodiment, the analysis of whether the use of each experimental reagent by each student in each experimental step is standard is specifically carried out as follows: a video of each student using each experimental reagent in each experimental step is obtained and input into the system, and at the same time, usage data of each student when using each experimental reagent in each experimental step is output, and compared with the usage data of each experimental reagent in each experimental step in the operation document. If the usage data of a certain student using a certain experimental reagent in a certain experimental step are the same as the usage data of the experimental reagent in the experimental step in the operation document, it means that the student meets the usage standard when using the experimental reagent in the step. If a certain student uses a certain experimental reagent in a certain experimental step and there is a certain usage data that is different from the usage data corresponding to the experimental reagent in the experimental step in the operation document, it means that the student does not meet the usage standard when using the experimental reagent. In this way, it is judged whether each student meets the usage standard when using each experimental reagent, and it is analyzed whether each experimental reagent without standard use is directly obtained, and a solution is formulated.

[0052] It should be noted that each usage data includes usage amount and usage order, etc.

[0053] In the above, it is described and analyzed whether the experimental reagents without standard use are directly obtained, and a solution is formulated. The specific process is as follows: S41, obtain the codes of each experimental reagent without standard use and the codes of each initialized experimental reagent, and compare the codes of each experimental reagent without standard use with the codes of each initialized experimental reagent. If the code of an experimental reagent without standard use is the same as the code of an initialized experimental reagent, it means that the experimental reagent without standard use is directly obtained. If the code of an experimental reagent without standard use is different from the codes of the initialized experimental reagents, it means that the experimental reagent without standard use is indirectly obtained. This method is used to determine whether the experimental reagents without standard use are directly obtained.

[0054] S42. When a primary student makes a mistake and directly obtains an experimental reagent that has no standard usage in a certain experimental step, the student is prompted to re-select the experimental reagent and redo the experimental step. When a primary student makes a mistake and indirectly obtains an experimental reagent that has no standard usage in a certain experimental step, the experimental reagent that has no standard usage is compared with the experimental reagents in the experimental steps before the experimental step. The experimental steps before the experimental step are called acquisition experimental steps. When the experimental reagent that has no standard usage is the same as an experimental reagent in each acquisition experimental step, it means that the experimental reagent that has no standard usage is produced in the acquisition experimental step. At this time, the student is prompted to return to the acquisition experimental step and redo the experimental operation from this experimental step.

[0055] The analysis module is used to obtain the experimental data of each student during the experiment, analyze the success coefficient of each student's experiment, determine whether each student can complete the experiment independently, and guide each student who cannot complete the experiment independently to conduct a secondary experiment.

[0056] In a specific embodiment, the success coefficient of the experiment of each student is analyzed, and whether each student can complete the experiment independently is determined. The specific process is as follows: the number of experimental step errors, the number of experimental equipment selection errors, the number of experimental equipment use errors, the number of experimental reagent selection errors, and the number of non-standard experimental reagent use errors of each student during the experiment are obtained, according to the analysis formula: Get the success coefficient λ of the experiment for the cth student c , where C′, D′, E′, F′, and G′ represent the preset thresholds of the number of experimental step errors allowed, the preset thresholds of the number of experimental equipment selection errors allowed, the preset thresholds of the number of experimental equipment use errors allowed, the preset thresholds of the number of experimental reagent selection errors allowed, and the preset thresholds of the number of non-standard experimental reagent use allowed, respectively. c , D c 、E c 、F c, G c They represent the number of incorrect experimental steps, incorrect experimental equipment selection, incorrect use of experimental equipment, incorrect selection of experimental reagents, and improper use of experimental reagents by the cth student during the experiment. w1, w2, and w3 represent the weight coefficients of the experimental steps, the weight coefficients of the experimental equipment, and the weight coefficients of the experimental reagents, respectively.

[0057] It should be noted that before students conduct the experiment, the teacher first conducts the experimental operation and counts the number of experimental step errors, the number of experimental equipment selection errors, the number of experimental equipment usage errors, the number of experimental reagent selection errors, and the number of non-standard experimental reagent uses during the experiment, and uses them as the preset threshold for the number of experimental step errors allowed, the preset threshold for the number of experimental equipment selection errors allowed, the preset threshold for the number of experimental equipment usage errors allowed, the preset threshold for the number of experimental reagent selection errors allowed, and the preset threshold for the number of non-standard experimental reagent uses allowed.

[0058] It should also be noted that the experimenters analyze the influence of experimental steps, experimental equipment and experimental reagents on the experimental results through the control variable method, and assign weight coefficients according to the degree of influence of experimental steps, experimental equipment and experimental reagents on the experimental results. The higher the degree of influence, the greater the assigned weight coefficient, and the sum of the weight coefficients of experimental steps, experimental equipment and experimental reagents is 1.

[0059] The experimental success coefficient of each student is compared with the preset experimental success coefficient threshold. If the experimental success coefficient of a student is higher than the preset success coefficient threshold, it means that the student can complete the experiment independently. If the experimental success coefficient of a student is lower than the preset success coefficient threshold, it means that the student cannot complete the experiment independently. This method is used to determine whether each student can complete the experiment independently, and guide each student who cannot complete the experiment independently to conduct a secondary experiment.

[0060] It should be noted that the average number of experimental step errors, the average number of experimental equipment selection errors, the average number of experimental equipment usage errors, the average number of experimental reagent selection errors and the average number of non-standard experimental reagent use in each student's experiment are obtained, and substituted into the success coefficient calculation formula, and the calculated value is used as the preset success coefficient threshold.

[0061] The database is used to store the names of various subjects, the names of various experiments, the codes of various experimental equipment, the codes of various experimental equipment, the names of various experimental equipment, and the preset numerical thresholds of various data.

[0062] It should be noted that the preset numerical thresholds of each data include the preset threshold of the number of experimental step errors allowed, the preset threshold of the number of experimental equipment selection errors allowed, the preset threshold of the number of experimental equipment use errors allowed, the preset threshold of the number of experimental reagent selection errors allowed, the preset threshold of the number of non-standard experimental reagent uses allowed, and the preset threshold of the experimental success coefficient.

[0063] See also Figure 2 As shown, the second aspect of the present invention provides a teaching control method based on a multimedia interactive teaching control system, comprising the following steps: Step 1, initialization: when the student enters the experiment name in the system, the operation document of the experiment is automatically generated and sent to each student.

[0064] Step 2: Control the experimental steps: obtain the operation actions of each student in each experimental step, and judge whether each student's experimental steps are correct. When an error occurs in an experimental step of a student, prompt the student.

[0065] Step 3. Control experimental equipment: obtain the experimental equipment selected by each student in each experimental step, and analyze whether the experimental equipment selected by each student in each experimental step is correct. If not, warn each student who has selected the wrong experimental equipment and prompt the required experimental equipment. If correct, obtain the video of each student using the experimental equipment, analyze whether each student uses the experimental equipment correctly, analyze the reasons why each student uses the equipment incorrectly, and formulate solutions.

[0066] Step 4. Control experimental reagents: obtain the experimental reagents selected by each student in each experimental step, and analyze whether the experimental reagents selected by each student in each experimental step are correct. If not, warn each student who selected the experimental reagents incorrectly and prompt the required experimental reagents. If correct, obtain the video of each student using the experimental reagents in each experimental step, and analyze whether the use of each experimental reagent in each experimental step is standard. If not, analyze whether the experimental reagents without standard use are directly obtained, and formulate solutions.

[0067] Step 5: Analysis: Obtain the experimental data of each student during the experiment, analyze the success coefficient of each student's experiment, and determine whether each student can complete the experiment independently, and guide each student who cannot complete the experiment independently to conduct a secondary experiment.

[0068] In the embodiment of the present invention, an operation document is initialized, and a number of experimental equipment and experimental reagents are generated at the same time, and the experimental steps of each student, the selected experimental equipment and each experimental reagent are detected to see whether they are correct, and at the same time, whether the use of each experimental equipment and each experimental reagent is standard. When there is an error or non-standard use, a prompt is given, and the cause is analyzed and resolved, and it is determined whether each student has mastered the experiment, and a secondary experimental operation is performed to ensure that each student's experimental operation is effectively guided and the success rate of the experiment is guaranteed, and the accuracy of the experimental equipment and experimental reagents selected by the students is ensured, and at the same time, the degree of mastery of the experiment by each student is obtained.

[0069] The above contents are merely examples and explanations of the concept of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined in this specification, they should all fall within the protection scope of the present invention.

Claims

1. A multimedia interactive teaching control system, characterized in that: Includes the following modules: The initialization module is used to automatically generate the operation document of the experiment and send it to each student after the teacher enters the subject name and experiment name in the system. At the same time, it generates several experimental equipment and experimental reagents and encodes them. The experimental step control module is used to obtain the operation actions of each student in each experimental step, and judge whether each experimental step of each student is correct. When an error occurs in an experimental step of a student, the student is prompted; The experimental equipment control module is used to obtain the experimental equipment selected by each student in each experimental step, analyze whether the experimental equipment selected by each student in each experimental step is correct, if not, warn each student who selected the wrong experimental equipment and prompt the required experimental equipment, if correct, obtain the video of each student using each experimental equipment, analyze whether each student uses each experimental equipment correctly, analyze the reasons why each student uses each equipment incorrectly, and formulate solutions; The experimental reagent control module is used to obtain the experimental reagents selected by each student in each experimental step, analyze whether the experimental reagents selected by each student in each experimental step are correct, if not, warn each student who selected the wrong experimental reagent and prompt the required experimental reagent, if correct, obtain the video of each student using each experimental reagent in each experimental step, analyze whether the use of each experimental reagent in each experimental step by each student is standard, if not standard, analyze whether each experimental reagent without standard use is directly obtained, and formulate solutions; The analysis module is used to obtain the experimental data of each student during the experiment, analyze the success coefficient of each student's experiment, and determine whether each student has mastered the experiment, and guide each student who has not mastered the experiment to conduct a secondary experiment; The database is used to store the names of various subjects, the names of various experiments, the codes of various experimental equipment, the codes of various experimental equipment, the names of various experimental equipment, and the preset numerical thresholds of various data.

2. A multimedia interactive teaching control system according to claim 1, characterized in that: The specific process of automatically generating the operation document of the experiment is as follows: After the teacher enters the subject name and experiment name in the system, the entered subject and experiment name are compared with the subject and experiment name of each experiment in the database. If the entered subject is the same as the subject of an experiment in the database, and the entered experiment name is the same as the experiment name of the experiment in the database, it means that the experiment that each student needs to do is this experiment. At this time, the experimental steps, precautions and required knowledge points of the experiment are read from the database to generate an operation document.

3. A multimedia interactive teaching control system according to claim 1, characterized in that: Describe and judge whether each student's experimental steps are correct. The specific process is as follows: A high-definition camera is installed in the multimedia. When each student performs the experimental operation according to the experimental steps, the operation video of each student in each experimental step is collected and transmitted to the system, and the operation actions of each student in each experimental step are output. The operation actions of each student in each experimental step are compared with the operation actions in each experimental step in the operation document. If the operation actions of a student in a certain experimental step are different from the operation actions in the experimental step in the operation document, it means that there is an error in the experimental step of the student. At this time, the student is warned and the correct operation steps are prompted. If the operation actions in each experimental step of a student are the same as the operation actions in the experimental step in the operation document, it means that the experimental steps of the student are correct. This method is used to judge whether the experimental steps of each student are correct.

4. A multimedia interactive teaching control system according to claim 1, characterized in that: The specific process of the experimental equipment control module is as follows: S11. When each student uses each experimental equipment, the experimental equipment code selected by each student in each experimental step is obtained, and at the same time, the video of each student using each experimental equipment in each experimental step is collected and input into the system, and each operation data of each student using each experimental equipment in each experimental step is output; S12, compare the experimental equipment code used by each student in each experiment with the experimental equipment code in the database. If a selected experimental equipment code is the same as an experimental equipment code in the database, read the name of the experimental equipment from the database, and use this method to obtain the names of the experimental equipment selected by each student in each experimental step, and compare them with the experimental equipment required for each step in the operation document. If the names of the experimental equipment selected by a student in a certain experimental step are the same as the names of the experimental equipment required for the experimental step in the operation document, it means that the experimental equipment selected by the student in the step is correct. If the name of an experimental equipment used by a student in a certain experimental step is different from the names of the experimental equipment required for the experimental step in the operation document, it means that the experimental equipment selected by the student in the step is incorrect. At this time, the student is warned and prompted with the experimental equipment required for the experimental step. In this way, whether the experimental equipment of each student in each experimental step is correct is obtained; S13, comparing each operation data of each student when using each experimental equipment with each operation data of each experimental equipment in the operation document. If each operation data of a student when using a certain experimental equipment is the same as each operation data of the experimental equipment in the operation document, it means that the student uses the experimental equipment correctly. If a certain operation data of a student when using a certain experimental equipment is different from the operation data corresponding to the experimental equipment in the operation document, it means that the student does not use the experimental equipment correctly. The student is called a primary error student and the experimental equipment is called an error equipment. This method is used to judge whether each student uses each experimental equipment correctly. S14. Analyze the reasons why each primary student made mistakes and did not use the equipment correctly, and solve them.

5. A multimedia interactive teaching control system according to claim 4, characterized in that: The above analysis is to analyze the reasons why each primary student who made mistakes did not use each wrong equipment correctly, and solve them. The specific process is as follows: S21, using electromyographic sensors to collect the signal values ​​of the hand muscles of each primary error student when using each incorrect equipment, and compare them with the preset hand muscle signal value ranges. If a signal value of a hand muscle of a primary error student is not within the preset hand muscle signal value range when using a certain incorrect equipment, it means that the reason why the primary error student did not correctly use the incorrect equipment is an objective reason. If the signal values ​​of the hand muscles of a primary error student are within the preset hand muscle signal value range when using a certain incorrect equipment, it means that the reason why the primary error student did not correctly use the incorrect equipment is a subjective reason. This method is used to determine the reason why each primary error student did not correctly use each incorrect equipment; S23. When the reason why a primary student who makes mistakes does not use a certain wrong equipment correctly is a subjective reason, the student is prompted with the correct method of using the wrong equipment. When the reason why a primary student who makes mistakes does not use a certain wrong equipment correctly is an objective reason, the operation data of the primary student who makes mistakes when using the wrong equipment is obtained, and the analysis formula is used: Get the correlation coefficient of the g-th operation data of the a-th primary error student when using the b-th error equipment Where H abg represents the g-th operation data of the a-th primary error student using the b-th error equipment, H b ' g represents the g-th operation data of the b-th incorrect equipment in the operation document, a represents the number of each primary student who makes mistakes, a=1,2,3,...,e, e represents the total number of primary students who make mistakes, b represents the number of each incorrect equipment, b=1,2,3,...,f, f represents the total number of incorrect equipment, g represents the number of each operation data, g=1,2,3,...,h, h represents the total number of operation data, a, e, b, f, g and h are all positive integers, at this time, according to the relationship coefficient of each operation data of each primary student who makes mistakes when using each incorrect equipment, the operation data of each primary student who makes mistakes when using each incorrect equipment is adjusted in real time.

6. A multimedia interactive teaching control system according to claim 1, characterized in that: The analysis of whether the experimental reagents selected by each student in each experimental step are correct is as follows: S31, obtaining the experimental reagent code selected by each student in each experimental step, and comparing it with the code of each experimental reagent in the database. If the code of a certain experimental reagent selected by a certain student in a certain experimental step is the same as the code of a certain experimental reagent in the database, it means that the experimental reagent selected by the student in the experimental step is the experimental reagent. In this way, the experimental reagents selected by each student in each experimental step are obtained; S32. Compare the experimental reagents selected by each student in each experimental step with the experimental reagents required for each step in the operation document. If the experimental reagents selected by a student in a certain experimental step are the same as the experimental reagents required for the experimental step in the operation document, it means that the experimental reagents selected by the student in the experimental step are correct. If there is an experimental reagent among the experimental reagents selected by a student in a certain experimental step that is different from the experimental reagents in the experimental step in the operation document, it means that the experimental reagent selected by the student in the experimental step is wrong. At this time, the student is prompted with the experimental reagents required for the step. This method is used to determine whether the experimental reagents selected by each student in each experimental step are correct.

7. A multimedia interactive teaching control system according to claim 1, characterized in that: The specific process of analyzing whether the use of each experimental reagent by each student in each experimental step is standard is as follows: Videos of each student using each experimental reagent in each experimental step are obtained and input into the system. Meanwhile, usage data of each student using each experimental reagent in each experimental step are output and compared with the usage data of each experimental reagent in each experimental step in the operation document. If the usage data of a certain student using a certain experimental reagent in a certain experimental step are the same as the usage data of the experimental reagent in the experimental step in the operation document, it means that the student meets the usage standard when using the experimental reagent in the step. If a certain student uses a certain experimental reagent in a certain experimental step and there is a certain usage data that is different from the usage data corresponding to the experimental reagent in the experimental step in the operation document, it means that the student does not meet the usage standard when using the experimental reagent. This method is used to determine whether each student meets the usage standard when using each experimental reagent, analyze whether each experimental reagent that is not used in a standard is directly obtained, and formulate a solution.

8. A multimedia interactive teaching control system according to claim 7, characterized in that: Describe and analyze whether the experimental reagents that are not used in the standard are directly obtained, and formulate solutions. The specific process is as follows: S41, obtaining codes of various experimental reagents for non-standard use and codes of various experimental reagents for initialization, and comparing the codes of various experimental reagents for non-standard use with the codes of various experimental reagents for initialization. If the code of an experimental reagent for non-standard use is the same as the code of an experimental reagent for initialization, it means that the experimental reagent for non-standard use is directly obtained. If the code of an experimental reagent for non-standard use is different from the codes of various experimental reagents for initialization, it means that the experimental reagent for non-standard use is indirectly obtained. In this way, it is determined whether various experimental reagents for non-standard use are directly obtained. S42. When a primary student makes a mistake and directly obtains an experimental reagent that has no standard usage in a certain experimental step, the student is prompted to re-select the experimental reagent and redo the experimental step. When a primary student makes a mistake and indirectly obtains an experimental reagent that has no standard usage in a certain experimental step, the experimental reagent that has no standard usage is compared with the experimental reagents in the experimental steps before the experimental step. The experimental steps before the experimental step are called acquisition experimental steps. When the experimental reagent that has no standard usage is the same as an experimental reagent in each acquisition experimental step, it means that the experimental reagent that has no standard usage is produced in the acquisition experimental step. At this time, the student is prompted to return to the acquisition experimental step and redo the experimental operation from this experimental step.

9. A multimedia interactive teaching control system according to claim 1, characterized in that: The specific process of analyzing the success coefficient of each student's experiment and judging whether each student has mastered the experiment is as follows: Obtain the number of experimental step errors, the number of experimental equipment selection errors, the number of experimental equipment use errors, the number of experimental reagent selection errors and the number of improper experimental reagent use by each student during the experiment, according to the analysis formula: Get the success coefficient λ of the experiment for the cth student c , where C′, D′, E′, F′, and G′ represent the preset thresholds of the number of experimental step errors allowed, the preset thresholds of the number of experimental equipment selection errors allowed, the preset thresholds of the number of experimental equipment use errors allowed, the preset thresholds of the number of experimental reagent selection errors allowed, and the preset thresholds of the number of non-standard experimental reagent use allowed, respectively. c , D c 、E c 、F c , G c They represent the number of times the c-th student made mistakes in the experimental steps, the number of times the experimental equipment was selected incorrectly, the number of times the experimental equipment was used incorrectly, the number of times the experimental reagents were selected incorrectly, and the number of times the experimental reagents were used improperly. w1, w2, and w3 represent the weight coefficients of the experimental steps, the weight coefficients of the experimental equipment, and the weight coefficients of the experimental reagents, respectively. The experimental success coefficient of each student is compared with the preset experimental success coefficient threshold. If the experimental success coefficient of a student is higher than the preset success coefficient threshold, it means that the student has mastered the experiment. If the experimental success coefficient of a student is lower than the preset success coefficient threshold, it means that the student has not mastered the experiment. This method is used to determine whether each student can master the experiment, and guide each student who has not mastered the experiment to conduct a secondary experiment.

10. A teaching control method based on a multimedia interactive teaching control system according to any one of claims 1 to 9, characterized in that: include: Step 1: Initialization: When the teacher enters the subject name and experiment name in the system, the operation document of the experiment is automatically generated and sent to each student. At the same time, several experimental equipment and experimental reagents are generated and coded; Step 2: Control the experimental steps: obtain the operation actions of each student in each experimental step, and judge whether each experimental step of each student is correct. When an error occurs in an experimental step of a student, prompt the student; Step 3: Controlling experimental equipment: Obtaining the experimental equipment selected by each student in each experimental step, analyzing whether the experimental equipment selected by each student in each experimental step is correct. If not, warning each student who selected the wrong experimental equipment will be given a warning, and the required experimental equipment will be prompted. If correct, obtaining the video of each student using each experimental equipment, analyzing whether each student used each experimental equipment correctly, analyzing the reasons why each student used each equipment incorrectly, and formulating solutions at the same time; Step 4, control experimental reagents: obtain the experimental reagents selected by each student in each experimental step, analyze whether the experimental reagents selected by each student in each experimental step are correct, if not, warn each student who selected the wrong experimental reagents and prompt the required experimental reagents, if correct, obtain the video of each student using each experimental reagent in each experimental step, analyze whether the use of each experimental reagent in each experimental step is standard, if not standard, analyze whether the experimental reagents without standard use are directly obtained, and formulate solutions; Step 5: Analysis: Obtain the experimental data of each student during the experiment, analyze the success coefficient of each student's experiment, determine whether each student has mastered the experiment, and guide each student who has not mastered the experiment to conduct a second experiment.

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