Electromagnetic induction experiment device

Abstract

The utility model embodiment relates to a kind of electromagnetic induction technology, provide a kind of electromagnetic induction experimental device, comprising: coil assembly and magnet component, the coil assembly is symmetrically arranged with magnet component;Coil assembly is provided with coil seat, and coil seat is installed with coil;Magnet component is provided with magnet seat, and the magnet seat is provided with magnet, and magnet seat is coaxially arranged with coil seat;Magnet component is connected with motor, and motor is connected with controller;Coil assembly is connected with display and magnetic sensor;The device will these components be assembled into an electromagnetic induction demonstration model, observe the voltage waveform that coil cuts magnetic force line emits by oscilloscope, observe the change waveform that rotating magnetic field magnetic induction emphasizes by magnetic sensor, understand the electromagnetic induction phenomenon of magnetic-electric very intuitively, thereby abstract electromagnetic induction law.It is a set of experimental device suitable for high school students to make, observe, study electromagnetic induction principle by oneself.

Description

Technical Field

[0001] This utility model relates to electromagnetic induction technology, mainly used in the fields of teaching and popular science, and in particular to an electromagnetic induction experimental device. Background Technology

[0002] In high school physics teaching, the law of electromagnetic induction is a crucial topic. However, in practice, the experimental demonstrations of this law lack sufficient visual appeal and quantitative representation, making it difficult for both teachers and students to understand—a major challenge in high school physics learning. In contrast, experimental philosophy is one of the most influential epistemological doctrines in Western philosophy. The acquisition of human knowledge should follow a scientific methodology based on experimentation, involving steps such as collecting, classifying, comparing, and eliminating empirical materials to deduce the laws and principles of nature. Some domestic scholars have also proposed that the essence of scientific knowledge cognition can be divided into three stages: the understanding of the essence of objects, the understanding of the essence of methods, and the understanding of the essence of culture—a process that begins with essential understanding, progresses to methodological abstraction, and ultimately achieves knowledge cognition.

[0003] To address this pain point in high school physics teaching, the author attempted to create a series of teaching aids that encourage student participation. These aids employ a modular design, allowing students to actively engage in relevant experiments before delving into a specific concept, thus gaining prior knowledge of the material to be learned and reducing the difficulty for both teachers and students in understanding the concepts. This application is one such teaching aid in this series. Utility Model Content

[0004] This invention proposes an electromagnetic induction experimental device based on basic components that students can assemble independently.

[0005] An electromagnetic induction experimental device includes: a coil assembly and a magnet assembly, wherein the coil assembly and the magnet assembly are symmetrically arranged;

[0006] Wherein: The coil assembly is provided with a coil base, the coil base is mounted with a coil to form a coil plane, and the two ends of the coil are respectively connected to copper terminals;

[0007] The magnet assembly is provided with a magnet base, and the magnet base is provided with a magnet, so that the magnet plane is parallel to the coil plane, and the magnet base and the coil base are coaxially arranged.

[0008] The magnet assembly is connected to a motor, and the motor is connected to a controller; the coil assembly is connected to a display and a magnetic sensor.

[0009] The motor drives the magnet base to rotate, the magnet plane rotates relative to the coil plane, and the magnet cuts the magnetic lines of force on the coil.

[0010] The display is used to detect the induced electromotive force in the coil, and the magnetic sensor is used to detect the magnetic flux density in the coil.

[0011] Furthermore, a coil is uniformly mounted on the outer edge of one disc of the coil holder, and the copper terminal is uniformly mounted on the outer edge of the other disc.

[0012] Furthermore, the display includes a display screen and a signal processor, wherein the display screen receives and displays signals from the signal processor; the signal processor includes an analog-to-digital conversion module, a data processing module, and a communication module.

[0013] Furthermore, the controller includes a motor driver and a speed controller; the motor driver drives the motor to rotate, and the speed controller controls the motor driver, thereby controlling the speed of the motor.

[0014] Furthermore, the coil and the coil holder, as well as the magnet holder and the magnet, are detachable and reconfigurable.

[0015] Furthermore, the analog-to-digital conversion module includes at least one signal input port.

[0016] Furthermore, the motor is a stepper motor.

[0017] Unlike traditional electromagnetic induction principle demonstration techniques, this experimental device is a student-assembled model based on basic components. This model allows students to experience related physical phenomena before learning the law of electromagnetic induction through hands-on practice, reducing the difficulty of teaching for teachers and understanding for students. The device consists of coil components, magnet components, a motor, and a drive shaft. Students can assemble these components into an electromagnetic induction law experimental device themselves, observe the induced electromotive force waveform generated by the coil cutting magnetic lines of force through an oscilloscope or monitor, and observe the change waveform of magnetic induction intensity through a magnetic sensor. This provides a very intuitive understanding of the electromagnetic induction phenomenon between magnetism and electricity, thereby abstracting the law of electromagnetic induction. This experimental device is suitable for students to make, observe, and study the principle of electromagnetic induction themselves. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the principle of an electromagnetic induction experimental device according to this utility model.

[0019] Figure 2 is a schematic diagram of an embodiment of the coil assembly of an electromagnetic induction experimental device according to this utility model.

[0020] Figure 3 is a schematic diagram of an embodiment of the magnet assembly of an electromagnetic induction experimental device according to this utility model.

[0021] Figure 4 is a schematic diagram of an embodiment of an electromagnetic induction experimental device according to this utility model.

[0022] Figure 5 is a schematic diagram of the controller structure of an electromagnetic induction experimental device according to this utility model.

[0023] Figure 6 is a schematic diagram of the display structure of an electromagnetic induction experimental device according to this utility model.

[0024] Figure 7 is a schematic diagram of the connection between the coil and the copper terminal of an electromagnetic induction experimental device according to this utility model.

[0025] Figure 8 is a schematic diagram of one of the methods for connecting coils in series in an electromagnetic induction experimental device according to this utility model.

[0026] Figure 9 is a schematic diagram of the installation process of the coil assembly of an electromagnetic induction experimental device according to this utility model.

[0027] Figure 10 is a schematic diagram of the installation process of the magnet assembly of an electromagnetic induction experimental device according to this utility model. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] To at least partially address problems in secondary school physics teaching, such as how to provide students with practical methods and experimental tools for observing and experiencing phenomena related to the law of electromagnetic induction, this invention provides an electromagnetic induction experimental apparatus, which includes:

[0030] The coil assembly 1 and the magnet assembly 2 are symmetrically arranged. The magnet assembly 2 is connected to a motor 3, and the motor 3 is connected to a controller 4. The coil assembly is connected to a display 5 and a magnetic sensor 6.

[0031] in:

[0032] The coil assembly 1 is provided with a coil base 11, and coils 12 are regularly installed on the coil base 11 to form a coil plane. The two ends of the coil 12 are respectively connected to two corresponding copper terminals 13.

[0033] The magnet assembly 2 is provided with a magnet base 21, and magnets 22 are evenly arranged on the magnet base 21 to form a magnet plane;

[0034] The coil plane is parallel to the magnet plane, and the coil base 11 is coaxial with the magnet base 21;

[0035] The motor 3 drives the magnet base 21 to rotate via the shaft, and the plane of the magnet 22 rotates relative to the plane of the coil 12, so that the magnet 22 cuts the magnetic lines of force on the coil 12;

[0036] The controller 4 includes a motor driver 41 and a speed controller 42. The motor driver 41 drives the motor 3 to rotate, and the speed controller 42 controls the motor driver 41, thereby controlling the speed of the motor 3.

[0037] The display 5 is used to detect the induced electromotive force in the coil 12, and the magnetic sensor 6 is used to detect the magnetic induction intensity in the coil 12;

[0038] The display includes a display screen 51 and a signal processor 52. The display screen 51 receives and displays signals from the signal processor 52. The signal processor 52 includes an analog-to-digital conversion module 523, a data processing module 522, and a communication module 521.

[0039] The analog-to-digital conversion module 523 includes at least one signal input port.

[0040] The connection between the coil 12 and the coil base 11 is detachable and reconfigurable, and the connection between the magnet base 21 and the magnet 22 is detachable and reconfigurable.

[0041] The number of coils is n, an even number, and the n coils can be combined in various ways.

[0042] The number of copper terminals is 2n.

[0043] The number of magnets is n, an even number, and there are various combinations among the n magnets.

[0044] The motor 3 is a stepper motor.

[0045] Figure 1 is a schematic diagram of the composition of an electromagnetic induction experimental device according to this utility model. Referring to Figure 1, the electromagnetic induction experimental device includes a coil assembly 1, a magnet assembly 2, a motor 3, a controller 4, a display 5, and a magnetic sensor 6.

[0046] Figure 2 illustrates an embodiment of the coil assembly in an electromagnetic induction experimental device according to this invention. Referring to Figure 2, the coil assembly includes a coil base 11, a coil 12, and copper terminals 13. The coil base 11 includes two discs connected and fixed by a cylinder, and a base is mounted on the cylinder to fix the coil base 11.

[0047] Referring again to Figure 2, the coil 12 is evenly mounted on the outer edge of one disc of the coil holder 11, and the copper terminal 13 is evenly mounted on the outer edge of the other disc of the coil holder 11.

[0048] In Figure 2, the two leads of each coil are connected to two copper terminals respectively. To avoid reducing visibility due to too many connections, the connection lines between the coil and the copper terminals are not shown in Figure 2.

[0049] Figure 3 shows an embodiment of the magnet assembly 2 in an electromagnetic induction experimental device of this invention. The magnet assembly includes a magnet base 21 and magnets 22. Referring to Figure 3, the magnets 23 are evenly mounted on the outer ring of the magnet base 21.

[0050] Figure 4 is a schematic diagram of an embodiment of the electromagnetic induction experimental device of this utility model. Referring to Figure 4, the coil assembly 1, the magnet assembly 2, and the motor 3 are coaxially mounted together via a transmission shaft 10. The motor 3 drives the magnet assembly 2 to rotate, causing the magnet plane to move relative to the coil plane. The coil assembly 1 and the motor 3 are mounted on the base via a mounting bracket.

[0051] Referring again to Figure 4, the coil 12 and the magnet 22 are installed in corresponding positions, forming a coil surface and a magnet surface. When the motor 3 drives the magnet assembly 2 to rotate, the coil surface and the magnet surface move relative to each other, and the magnetic lines of force of the magnet 22 rotate and cut the coil 12, generating an induced electromotive force (EMF). This induced EMF is transmitted to the copper terminal 13, where it can be detected. In Figure 4, the coil 12, magnet 22, copper terminal 13, and motor 3 are marked with gray blocks.

[0052] Referring again to Figure 4, the controller 4 is connected to the motor 3 and drives the motor 3 to rotate. The display 5 is connected to the coil assembly 1 and measures the induced electromotive force generated by the coil 12. The input of the magnetic sensor 6 is connected to the coil assembly 1 and measures the magnetic flux density in the coil 12. The output of the magnetic sensor 6 serves as the input of the display 5, which displays the changes in the magnetic flux density in the coil 12.

[0053] Figure 5 is a schematic diagram of the controller structure of an electromagnetic induction experimental device according to this utility model. Referring to Figure 5, the controller includes a motor driver 41 and a speed controller 42. The motor driver 41 drives the motor 3 to rotate, and the speed controller 42 controls the motor driver 41, thereby controlling the speed of the motor 3.

[0054] Figure 6 is a schematic diagram of the display structure of an electromagnetic induction experimental device according to this utility model. Referring to Figure 6, the display 5 includes a display screen 51 and a signal processor 52, and the display screen 51 receives signals from the signal processor. The signal processor 52 includes an analog-to-digital conversion module 523, a data processing module 522, and a communication module 521. The analog-to-digital conversion module 523 includes at least one signal input port: input port A1, input port A2, ..., input port Am.

[0055] Figure 7 is a schematic diagram of the connection between the coil and the copper terminals in an electromagnetic induction experimental device according to this utility model. In Figure 7, the coil 12 is represented by a gray circular block, X coil 1 is the first coil, ..., coil X6 is the sixth coil. The copper terminals 13 are represented by gray square blocks, copper terminal k11 is the first copper terminal, ..., copper terminal k62 is the twelfth copper terminal. Copper terminals k11 and k12 are connected to the two ends of coil X1, copper terminals k21 and k22 are connected to the two ends of coil X2, and so on.

[0056] Referring to Figures 4 and 7, when the motor 3 drives the magnet assembly 2 to rotate, the coil in the coil assembly 1 cuts the magnetic lines of force to generate an induced electromotive force. The induced electromotive force is led through the coil and the coil wire end to the corresponding copper terminal. The induced electromotive force can be measured by measuring the voltage of the copper terminal.

[0057] Figure 8 is a wiring diagram of one of the coil series connection methods of the electromagnetic induction experimental device of this utility model. Referring to Figure 8a, copper terminal k11 is led out as the first measurement interface P1, and copper terminal k12 is led out as the second measurement interface P2. By observing the waveform between measurement interface P1 and measurement interface P2 on the display, the induced electromotive force of coil X1 can be observed. Referring to Figure 8b, copper terminal k12 is connected to copper terminal k31, and the detection point measurement interface P2 is connected to copper terminal k32. The induced electromotive force of coil X1 and coil X2 connected in series can be measured between measurement interface P1 and measurement interface P2. According to this connection method, the induced electromotive force of coil X1, coil X2, and coil X3 connected in series can be measured, and so on.

[0058] Figure 9 is a schematic diagram of the actual installation process of the coil assembly 1 in the electromagnetic induction experimental device of this utility model. Referring to Figure 9, students can install the coil 12 and copper terminal 13 onto the coil base 11 in the experiment to form the coil assembly 1.

[0059] Figure 10 is a schematic diagram of the actual installation process of the magnet assembly 2 in an electromagnetic induction experimental device of this utility model. Students can install the magnet 22 onto the magnet base 21 during the experiment to form the magnet assembly 2.

[0060] Unlike traditional electromagnetic induction principle demonstration techniques, this experimental device is a student-assembled model based on fundamental components. This model allows students to experience related physical phenomena before learning the law of electromagnetic induction through hands-on practice, reducing the difficulty of teaching and understanding for both teachers and students. The device consists of coil components, magnet components, a motor, and a drive shaft. Students can assemble these components into an electromagnetic induction law experimental device themselves, observing the induced electromotive force waveform generated by the coil cutting magnetic lines of force using an oscilloscope or monitor, and observing the change in magnetic induction intensity waveform using a magnetic sensor. This provides a very intuitive understanding of the electromagnetic induction phenomenon between magnetism and electricity, thereby abstracting the law of electromagnetic induction. This experimental device is suitable for students to create, observe, and study the principle of electromagnetic induction themselves.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An electromagnetic induction experimental apparatus, characterized in that, include: A coil assembly and a magnet assembly, wherein the coil assembly and the magnet assembly are arranged symmetrically. in: The coil assembly is provided with a coil base, the coil base is mounted with a coil to form a coil plane, and the two ends of the coil are respectively connected to copper terminals; The magnet assembly is provided with a magnet base, and the magnet base is provided with a magnet, so that the magnet plane is parallel to the coil plane, and the magnet base and the coil base are coaxially arranged. The magnet assembly is connected to a motor, and the motor is connected to a controller; the coil assembly is connected to a display and a magnetic sensor. The motor drives the magnet base to rotate, the magnet plane rotates relative to the coil plane, and the magnet cuts the magnetic lines of force on the coil. The display is used to detect the induced electromotive force in the coil, and the magnetic sensor is used to detect the magnetic induction intensity of the coil.

2. The electromagnetic induction experimental apparatus according to claim 1, characterized in that, The coil holder includes two discs, one disc having a coil evenly mounted on its outer edge, and the other disc having the copper terminals evenly mounted on its outer edge.

3. The electromagnetic induction experimental apparatus according to claim 1, characterized in that, The display includes a display screen and a signal processor. The display screen receives and displays signals from the signal processor. The signal processor includes an analog-to-digital conversion module, a data processing module, and a communication module.

4. The electromagnetic induction experimental apparatus according to claim 1, characterized in that, The controller includes a motor driver and a speed controller; the motor driver drives the motor to rotate, and the speed controller controls the motor driver, thereby controlling the speed of the motor.

5. The electromagnetic induction experimental apparatus according to claim 1, characterized in that, The coil and the coil holder, as well as the magnet holder and the magnet, are detachable and reconfigurable.

6. The electromagnetic induction experimental apparatus according to claim 3, characterized in that, The analog-to-digital converter module includes at least one signal input port.

7. The electromagnetic induction experimental apparatus according to claim 1, characterized in that, The motor is a stepper motor.

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