Intermediate frequency power supply connection method for teaching

Abstract

The invention relates to a medium-frequency power supply connection method for teaching, which comprises a medium-frequency power supply simulation device, the medium-frequency power supply simulation device is electrically connected with an electrical control system demonstration board, the electrical control system demonstration board is electrically connected with a server, and the server comprises a signal simulation module. The signal simulation module is electrically connected with the electrical control system demonstration board, the electrical control system demonstration board comprises a control module, an inverter module, a rectifier module and a sensing module, the rectifier module is electrically connected with the inverter module, and the inverter module is electrically connected with the control module; the idea of real installation, simulation and virtualization is adopted, a comprehensive teaching and training system is constructed by means of informatization, and the functions of electrical control system principle teaching, subsystem simulation operation, whole system operation control, line detection, intelligent fault setting and assessment, teaching display and the like of the intermediate frequency power supply can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of medium frequency power supply for teaching, and in particular to a medium frequency power supply connection method for teaching. Background Art

[0002] A medium frequency power supply device is a device that uses thyristor elements to convert three-phase industrial frequency current into a medium frequency current of a certain frequency. It is widely used in the fields of induction melting and induction heating. Its working principle is to rectify AC into DC through a rectifier circuit, and then convert it into medium frequency AC to supply the load through an inverter. In order to enable students to understand the basic principles and applications of medium frequency induction heating devices, master their composition and working principles, and be able to perform simple fault repair and debugging1, experimental teaching is usually required to understand theoretical knowledge and practical operation skills, and ensure that medium frequency power supply equipment can be correctly selected and used. However, the existing medium frequency power supply devices are not intuitive and are not suitable for direct use as practical training and assessment devices. Therefore, we designed a medium frequency power supply connection method for teaching.

[0003] Patent No. CN200820169609.1 is a Chinese utility model patent, which discloses a medium frequency power supply control circuit for teaching, which includes a signal detection circuit and a frequency control circuit; it makes good use of the nonlinear volt-ampere characteristics of the diode and is connected to the high-sensitivity frequency control circuit through a high-impedance isolation transformer, thereby realizing the detection of weak signals and the start-up of the power supply, simplifying the circuit and increasing reliability. This technology is a medium frequency power supply device for teaching, which is used for the skill appraisal of maintenance electricians and experimental training in colleges and universities. However, this utility model has the following problems: first, it does not have the functional modules for fault setting and student assessment, and cannot test the students' learning and mastering level, and cannot verify the learning results; secondly, it does not have a teaching function, and cannot intuitively and clearly observe the internal settings and faults of the medium frequency power supply, which is not convenient for the teaching process. Summary of the invention

[0004] The purpose of the present invention is to address the shortcomings of the prior art and to solve the technical problems that the existing medium frequency power supply device is not intuitive, is not suitable for being directly used as a practical training and assessment device, cannot test the students' learning and mastering level, and cannot verify the learning outcomes by providing an electrical control system teaching board, an assessment module, and a simulated fault library module.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A medium frequency power supply connection method for teaching, comprising a medium frequency power supply simulation device, wherein the medium frequency power supply simulation device is electrically connected to an electrical control system teaching board, wherein the electrical control system teaching board is electrically connected to a server, wherein the server comprises a signal simulation module, wherein the signal simulation module is electrically connected to the electrical control system teaching board, wherein the electrical control system teaching board comprises a control module, an inverter module, a rectifier module, and a sensor module, wherein the rectifier module is electrically connected to the inverter module, and wherein the inverter module is electrically connected to the control module.

[0007] As a preferred embodiment, the server is equipped with a customized and developed medium frequency power supply electrical system information-based comprehensive teaching and training system software module, and the medium frequency power supply electrical system information-based comprehensive teaching and training system software module is connected to the electrical control system teaching board via a network cable.

[0008] As a preferred embodiment, the software module of the medium frequency power supply electrical system information-based comprehensive teaching and training system includes an intelligent fault setting module and an assessment module, a demonstration module, and an identity authentication module.

[0009] As a preferred embodiment, the identity authentication module includes an administrator identity module, a teacher identity module and a student identity module. The administrator identity module is provided with an administrator authority module and an administrator data storage module, the teacher identity module is provided with a teacher authority module and a teacher data storage module, and the student identity module is provided with a student authority module and a student data storage module.

[0010] As a preference, the medium frequency power supply simulation device comprises an information acquisition module, the information acquisition module is electrically connected to an information processing module, and the information processing module is electrically connected to an information decision module.

[0011] As a preferred embodiment, the information decision module is connected to an intelligent fault setting module, and the intelligent fault setting module is connected to a simulated fault library module.

[0012] As a preferred embodiment, the intelligent fault setting module includes a fault point type module and a fault point quantity module, and the intelligent fault setting module is electrically connected to the assessment module.

[0013] As a preferred embodiment, the assessment module is connected to the simulated fault library module, the demonstration module and the identity authentication module are both connected to the assessment module, and the demonstration module is connected to the information collection module.

[0014] Beneficial effects of the present invention:

[0015] (1) In the present invention, an electrical control system teaching board is provided, and the components on it are consistent with the actual components of the medium frequency power supply, and the open structure design, layout and electrical principle of the actual circuit are consistent with each other. Figure 1The circuits are the same in structure and behavior. During operation, the light strip can be used to display the circuit operation process in stages. The main electrical parameter feature points can be collected, and the data can be displayed through the server to realize the principle learning and diagram recognition training of the medium frequency power supply electrical system.

[0016] (2) In the present invention, an assessment module is set up, combined with the actual fault generation mechanism and failure mode, the fault point type and the number of fault points are selected, and fault assessment questions are automatically generated. By recording the changes in the fault point signal parameters, the assessment results are recorded and identified, and the correctness of the fault location diagnosis and elimination is evaluated.

[0017] (3) In the present invention, a simulated fault library module is set up, and a theoretical assessment system for troubleshooting ideas is established according to each fault formed in the intelligent fault setting module, forming a certain number of assessment question banks. Trainees can study and practice according to the fault questions in the assessment question bank to assess whether the trainees' theoretical knowledge and troubleshooting ideas are correct.

[0018] In summary, the device has the advantages of simple structure and can effectively and evenly sizing, and is particularly suitable for the technical field of textile sizing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 The figure is a schematic diagram of the overall structure of a medium frequency power supply connection method for teaching.

[0021] Figure 2 It is a structural diagram of the teaching board of the electrical control system.

[0022] Figure 3 This is a structural diagram of the intelligent fault setting module.

[0023] Figure 4 This is a structural diagram of the identity authentication module.

[0024] Figure 5 This is a schematic diagram of the server structure. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0026] Embodiment 1

[0027] like Figures 1 to 5 As shown, the present invention provides a teaching medium frequency power connection method, including a medium frequency power simulation device, the internal components of which are consistent with the actual components of the medium frequency power supply, and the layout is consistent with the electrical principle of the actual circuit. Figure 1 The medium frequency power supply simulation device is electrically connected to the electrical control system teaching board, and the components on it are consistent with the actual components of the medium frequency power supply, and are openly displayed on a circuit board, so that students can intuitively learn the device composition and circuit connection of the medium frequency power supply; the main electrical parameter feature point collection can be realized, and the data can be displayed through the server to realize the principle learning and diagram recognition training of the medium frequency power supply electrical system. The signal data between the medium frequency power supply simulation device and the same device on the electrical control system teaching board is the same. For example, when the device of the medium frequency power supply simulation device is adjusted, the same device on the electrical control system teaching board is adjusted synchronously. The same device has wireless linkage, and the electrical The control system teaching board is electrically connected to the server, which is the upper computer and the main control and operation mechanism. The server includes a signal simulation module, which uses signal simulation to drive the devices on the electrical control system teaching board to work, so as to realize the operation of the entire medium-frequency power supply system. The signal simulation module is electrically connected to the electrical control system teaching board. The electrical control system teaching board includes a control module, an inverter module, a rectifier module, and a sensor module. The rectifier module is electrically connected to the inverter module, and the inverter module is electrically connected to the control module. The AC input is processed by the rectifier module to form DC, and the DC is processed by the inverter module to form medium-frequency AC. The control module is used to control the start and stop of the power supply and power regulation. The sensor module facilitates the detection and disassembly of the electrical circuit.

[0028] Further, if Figure 1 As shown, the server is equipped with a customized and developed medium frequency power supply electrical system information-based comprehensive teaching and training system software module, which adopts the idea of ​​"real installation + simulation + virtual" and builds a comprehensive teaching and training system with information technology. The medium frequency power supply electrical system information-based comprehensive teaching and training system software module is connected to the electrical control system teaching board through a network cable, and system operations are performed on the server to change the settings of the electrical control system teaching board.

[0029] Further, if Figure 5 As shown, the software module of the medium frequency power supply electrical system information-based comprehensive teaching and training system includes an intelligent fault setting module and an assessment module, a demonstration module, and an identity authentication module. When entering the software module of the medium frequency power supply electrical system information-based comprehensive teaching and training system, one first performs identity authentication in the identity authentication module, and then selects a fault when entering the assessment module, so as to conduct comprehensive teaching or training or assessment.

[0030] Further, if Figure 4As shown, the identity authentication module includes an administrator identity module, a teacher identity module and a student identity module. The administrator identity module is provided with an administrator authority module and an administrator data storage module, the teacher identity module is provided with a teacher authority module and a teacher data storage module, and the student identity module is provided with a student authority module and a student data storage module. The administrator has the largest authority and data storage space, the student has the smallest authority and data storage space, and the teacher's authority and data storage space are in between. Different personnel log in with different account types, and thus have different control and change permissions for the software module of the medium frequency power supply electrical system information comprehensive teaching and training system.

[0031] Further, if Figure 1 As shown, the medium frequency power supply simulation device includes an information acquisition module, the information acquisition module is electrically connected to the information processing module, the information processing module is electrically connected to the information decision module, the information acquisition module collects circuit information such as power supply voltage at various locations in the medium frequency power supply simulation device, and transmits it to the information processing module for information processing, and then feeds back to the information decision module. When the circuit information is abnormal, the information decision module feeds back to the intelligent fault setting module, and the intelligent fault setting module records and issues a fault warning.

[0032] Furthermore, the information decision module is connected to the intelligent fault setting module, and the intelligent fault setting module is connected to the simulated fault library module. The intelligent fault setting module stores the recorded fault information in the simulated fault library module, which needs to be manually sorted to form a question bank for different fault points. During the assessment and practical training of trainees, test questions in the simulated fault library module can be extracted for training.

[0033] Further, if Figure 3 As shown, the intelligent fault setting module includes a fault point type module and a fault point quantity module, and the intelligent fault setting module is electrically connected to the assessment module. After the trainee logs in through the identity authentication module, he enters the assessment module. The assessment module mobilizes the information of the intelligent fault setting module, and matches the test question bank of the simulated fault library module by selecting the information in the fault point type module and the fault point quantity module to form test questions. The intelligent fault setting module feeds back the fault information to the signal simulation module, and the signal simulation module performs signal simulation, so that the corresponding components on the electrical control system teaching board and the medium frequency power supply simulation device change, and corresponding faults occur. The trainees can troubleshoot and repair the electrical control system teaching board or the medium frequency power supply simulation device to complete the practical assessment.

[0034] Further, if Figure 5As shown, the assessment module is connected to the simulated fault library module, the demonstration module and the identity authentication module are both connected to the assessment module, and the demonstration module is connected to the information acquisition module. The demonstration module organizes the circuit information collected by the information acquisition module into an intuitive graphic table and presents it on the display of the server, so that people can intuitively grasp the circuit changes.

[0035] Working process: First, enter the software module of the medium frequency power supply electrical system information-based comprehensive teaching and training system. Students perform identity authentication in the identity authentication module, and then enter the assessment module to select the fault point type and the number of fault points; further, by selecting the information in the fault point type module and the fault point number module, match the test question bank of the simulated fault library module to form test questions; further, the intelligent fault setting module feeds back the fault information to the signal simulation module, and the signal simulation module performs signal simulation, so that the corresponding components on the electrical control system teaching board and the medium frequency power supply simulation device change, and corresponding faults occur; further, students can troubleshoot and repair the electrical control system teaching board or the medium frequency power supply simulation device and complete the practical assessment. During this period, the oscilloscope module presents the circuit information changes that occur during the students' troubleshooting and maintenance on the server's display, so that the instructor can intuitively hand over the circuit changes.

[0036] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0037] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0038] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A medium frequency power supply connection method for teaching, characterized in that: It includes a medium-frequency power supply simulation device, which is electrically connected to an electrical control system teaching board, which is electrically connected to a server, and the server includes a signal simulation module, which is electrically connected to the electrical control system teaching board. The electrical control system teaching board includes a control module, an inverter module, a rectifier module, and a sensor module. The rectifier module is electrically connected to the inverter module, and the inverter module is electrically connected to the control module.

2. A teaching medium frequency power supply connection method according to claim 1, characterized in that: The server is equipped with a customized and developed medium frequency power supply electrical system information-based comprehensive teaching and training system software module, and the medium frequency power supply electrical system information-based comprehensive teaching and training system software module is connected to the electrical control system teaching board via a network cable.

3. A teaching medium frequency power supply connection method according to claim 2, characterized in that: The software modules of the medium frequency power supply electrical system information-based comprehensive teaching and training system include an intelligent fault setting module and an assessment module, a demonstration and broadcasting module, and an identity authentication module.

4. A method for connecting a medium frequency power supply for teaching according to claim 3, characterized in that: The identity authentication module includes an administrator identity module, a teacher identity module and a student identity module. The administrator identity module is provided with an administrator authority module and an administrator data storage module, the teacher identity module is provided with a teacher authority module and a teacher data storage module, and the student identity module is provided with a student authority module and a student data storage module.

5. A teaching medium frequency power supply connection method according to claim 1, characterized in that: The medium frequency power supply simulation device comprises an information acquisition module, the information acquisition module is electrically connected to the information processing module, and the information processing module is electrically connected to the information decision module.

6. A method for connecting a medium frequency power supply for teaching according to claim 5, characterized in that: The information decision module is connected to the intelligent fault setting module, and the intelligent fault setting module is connected to the simulated fault library module.

7. A teaching medium frequency power supply connection method according to claim 3, characterized in that: The intelligent fault setting module includes a fault point type module and a fault point quantity module, and the intelligent fault setting module is electrically connected to the assessment module.

8. A method for connecting a medium frequency power supply for teaching according to claim 3, characterized in that: The assessment module is connected to the simulated fault library module, the demonstration module and the identity authentication module are both connected to the assessment module, and the demonstration module is connected to the information collection module.

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