Integrated electromagnetism science popularization teaching aid

Abstract

The utility model discloses an integrated electromagnetism science popularization teaching aid, which is characterized by comprising a transparent box body, a base arranged in the box body and an electrical module arranged on the box body, the electricity module comprises a Tesla coil arranged on the upper portion of the box body, a kite arranged in the box body, a metal wire connected with the kite and a first bulb arranged on the base and connected and conducted with the metal wire. A whole set of electromagnetism experiments including the electricity module, the magnetism module, the electricity-to-magnetism module and the magnetism-to-electricity module are integrated in the transparent box body, the integrated arrangement is small in occupied space and convenient to carry and store, operation of the whole set of electromagnetism experiments is facilitated, a platform for exploring the electromagnetic world in an omnibearing and multi-angle mode is provided for students, and the teaching experience of the students is improved. The teaching aid is not only suitable for high school physics teaching, but also is an ideal choice for science popularization exhibition and scientific education activities, and students can personally experience charm of electromagnetism and stimulate interests of exploring scientific secrete through elaborately designed experiment content and situation simulation.

Description

Technical Field

[0001] This utility model relates to electromagnetic teaching aids, specifically an integrated electromagnetic science popularization teaching aid. Background Technology

[0002] Existing teaching aids for electromagnetism primarily focus on demonstrating or exploring fundamental principles, lacking the construction and setup of application scenarios for electromagnetic induction. They fail to provide vivid and intuitive experimental demonstrations, hindering students' rapid and in-depth understanding of electromagnetism principles. Furthermore, each experiment in existing electromagnetism teaching aids is a separate device. To explore and learn multiple core knowledge points of electromagnetism from multiple angles and in a comprehensive manner, multiple devices are needed in combination. However, multiple devices occupy significant space, making them inconvenient to transport and store during teaching. Therefore, this paper proposes an integrated electromagnetism popular science teaching aid. Utility Model Content

[0003] The purpose of this invention is to propose an integrated electromagnetic science popularization and teaching tool to solve the above problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an integrated electromagnetic science popularization and teaching tool, characterized by including a transparent box, a base placed inside the box, and an electrical module placed on the box; the electrical module includes a Tesla coil placed on the upper part of the box, a kite placed inside the box, a metal wire connected to the kite, and a light bulb placed on the base and connected to the metal wire for conduction.

[0005] In a further preferred embodiment, the electrical module also includes a saline solution box, zinc and copper sheets placed inside the saline solution box without contact, and a light bulb connected to the zinc and copper sheets via wires.

[0006] Further preferably, it also includes a magnetic module placed on the base, the magnetic module comprising a magnetic seesaw and magnetic levitation; the magnetic seesaw includes a support, a bracket set on the support, a seat plate movably mounted on the bracket, and a magnet placed at both ends of the support and the seat plate, and the magnets on the same side of the support and the seat plate are arranged in a parallel manner.

[0007] More preferably, the magnetic levitation includes a ring magnet placed on a base, a suspension magnet placed on the ring magnet and arranged in the same order as the ring electromagnet, two Hall elements disposed at the center of the ring magnet and perpendicular to each other, and an MCU connected to the Hall elements and the ring magnet.

[0008] Further preferably, it also includes an electromagnetism module, which comprises a traffic light module and a current magnetic effect module; the traffic light module comprises a battery, a circuit board connected to the battery via a circuit, and a plurality of light-emitting diodes electrically connected and mounted on the circuit board, wherein the light-emitting diodes include green lights and red lights.

[0009] More preferably, the current magnetic effect module includes a second battery, a DC-current coil connected to the second battery, and magnetic needles placed on both sides of the DC-current coil.

[0010] Further preferably, it also includes a magnetoelectric module, which comprises a hand-cranked generator module and a wireless charging module; the hand-cranked generator module includes a turntable mounted on a base, a rotor mounted movably on the turntable, a hand-cranked turntable connected to the rotor via a belt, several coils mounted on the turntable and located outside the rotor, and a voltmeter and a light bulb electrically connected to the coils; the voltmeter is electrically connected to a battery; and the rotor is equipped with several magnets corresponding to the coils.

[0011] More preferably, the wireless charging module includes a transmitting coil placed on the base, a power supply electrically connected to the transmitting coil, a receiving coil, and a light bulb electrically connected to the receiving coil.

[0012] The beneficial effects of this utility model are as follows: This teaching aid integrates a complete set of electromagnetism experiments, including electricity, magnetism, electromagnetism, and magnetism-electricity modules, into a transparent box. The integrated design takes up little space and is easy to transport and store, facilitating the operation of the entire set of electromagnetism experiments. It provides students with a comprehensive and multi-faceted platform to explore the electromagnetic world. This teaching aid is not only suitable for high school physics teaching, but also an ideal choice for popular science exhibitions and science education activities. Through carefully designed experimental content and scenario simulations, students can personally experience the charm of electromagnetism and stimulate their interest in exploring scientific mysteries.

[0013] Contextualized teaching in each module not only enhances the fun and intuitiveness of learning, but also helps students connect abstract physical concepts with real life; the use of visualization to show experimental phenomena makes abstract concepts more intuitive and concrete, making it easier for students to understand and remember them. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a partial structural schematic diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the structure from another perspective of this utility model.

[0017] Legend: 1. Box; 2. Base; 3. Tesla coil; 4. Kite; 41. Metal wire; 42. Light bulb one; 5. Salt water box; 51. Zinc sheet; 52. Copper sheet; 53. Light bulb two; 6. Support; 61. Bracket; 62. Seat plate; 63. Magnet one; 64. Ring magnet; 65. Suspension magnet; 7. Circuit board; 71. Battery one; 72. Light-emitting diode; 73. Green light; 74. Red light; 8. Battery two; 81. DC energized coil; 82. Magnetic needle; 9. Turntable base; 91. Rotor base; 92. Hand-cranked turntable; 93. Coil; 94. Voltmeter; 95. Light bulb three; 96. Battery three; 97. Magnet two; 10. Transmitting coil; 11. Receiving coil; 12. Light bulb four. Detailed Implementation

[0018] The following description, in conjunction with the accompanying drawings, further illustrates an integrated electromagnetic science popularization and teaching tool according to this utility model.

[0019] It should be noted that all directional indicators such as up, down, left, right, front, back, etc. in the embodiments of this utility model are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicator will also change accordingly.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly; for example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] See Figures 1-3 As shown, an integrated electromagnetic science popularization teaching tool is characterized by including a transparent box 1, a base 2 placed inside the box 1, and an electrical module placed on the box 1; the electrical module includes a Tesla coil 3 placed on the upper part of the box 1, a kite 4 placed inside the box 1, a metal wire 41 connected to the kite 4, and a light bulb 42 placed on the base 2 and connected to the metal wire 41.

[0022] When conducting the Franklin kite 4 experiment: the kite 4 is suspended from the top of the box 1 by a non-conductive line, the power is turned on, and the Tesla coil 3 is energized. The Tesla coil 3 generates lightning to simulate thunder, and the metal wire 41 on the kite 4 induces an electric charge and conducts the charge to the bulb 42, causing the bulb 42 to light up.

[0023] In one embodiment, the electrical module further includes a saline box 5, a zinc sheet 51 and a copper sheet 52 placed inside the saline box 5 without contact, and a light bulb 53 connected to the zinc sheet 51 and the copper sheet 52 by a wire.

[0024] In the salt water experiment: Zinc sheet 51 and copper sheet 52 are placed in the salt water without touching each other. Zinc is more reactive than copper. In the salt water, zinc more easily loses electrons and undergoes an oxidation reaction: Zn - 2e - =Zn 2+ At this point, zinc plate 51 acts as the negative electrode; the salt (NaCl) in the solution ionizes in the water and acts as a conductor, causing the copper plate 52 in the water to gain electrons and undergo a reduction reaction: 2H₂O + +2e - = H2↑. With copper plate 52 as the positive electrode, electrons flow from zinc plate 51 through the external circuit to copper plate 52, thus forming a current in the external circuit. The second bulb 53 is connected to zinc plate 51 and copper plate 52 through wires, causing the second bulb 53 to light up.

[0025] In one embodiment, it further includes a magnetic module placed on the base 2, the magnetic module including a magnetic seesaw and magnetic levitation; the magnetic seesaw includes a support 6, a bracket 61 disposed on the support 6, a seat 62 movably mounted on the bracket 61, and magnets 63 placed at both ends of the support 6 and the seat 62, and the magnets 63 on the same side of the support 6 and the seat 62 are arranged opposite each other at the same level.

[0026] In the magnetic seesaw experiment: the seat 62 and the support 61 in each seesaw are combined as a lever. Magnets 63 are installed at both ends of the seat 62 and on the support 6. The magnets 63 on the support 6 and the seat 62 are arranged opposite each other. When the support 61 is at the center point of the seat 62 and the gravity and magnetic force of the magnets on both sides of the seat 62 are the same, the seat 62 is in a balanced state. When a downward squeezing force is applied to one side of the seat 62 and then released, the seat 62 will tilt downward and move upward by repulsion between the magnets 63 and the same pole. The seat 62 swings left and right based on the fulcrum until it is balanced. The seat 62 is in a balanced state by the magnetic repulsion between the like poles at both ends.

[0027] In one embodiment, the magnetic levitation includes a ring magnet placed on a base 2, a suspension magnet 65 placed on the ring magnet and arranged at the same level as the ring magnet, two Hall elements arranged at the center of the ring magnet and perpendicular to each other, and an MCU connected to the Hall elements and the ring magnet 64; the ring magnet is an electromagnet.

[0028] During the magnetic levitation experiment, the ring magnet is energized to generate magnetism. After the ring magnet generates magnetism, it is pushed upward by the repulsion between the same-pole suspended magnet 65 and the ring magnet 65, which is set opposite to it, and thus floats on the ring magnet to demonstrate magnetic levitation.

[0029] The levitation magnet 65 is controlled to remain at the center of the annular magnet via a Hall effect sensor, an MCU, and the annular magnet itself. Two Hall effect sensors are used to detect the magnetic field. These two sensors are mounted at the center of the annular magnet, perpendicular to each other, with their detection surfaces parallel to the vertical. If the smaller magnet above is on the central axis, the magnetic field lines of the system are also in the vertical direction, and neither Hall effect sensor outputs anything. If the levitation magnet 65 deviates from the central axis, the magnetic field lines of the system will deviate from the vertical direction, and the Hall effect sensors will detect this deviation. At this point, the MCU collects the output from the Hall effect sensors and controls the annular magnet to generate a horizontal magnetic force in the opposite direction, pulling the levitation magnet 65 back to the central axis.

[0030] In one embodiment, the system further includes an electromagnetism module, which includes a traffic light module and a current magnetic effect module; the traffic light 73 module includes a battery 71, a circuit board 7 connected to the battery 71 via a circuit, and a plurality of light-emitting diodes 72 electrically connected to the circuit board 7, wherein the light-emitting diodes 72 include a green light 73 and a red light 74.

[0031] When conducting the traffic light experiment: LED 72 has unidirectional conductivity. During the experiment, connect the wire connected to the circuit to the positive and negative terminals of battery 71. The direction of current flow can be determined by the brightness of green light 73 and red light 74. Then, by reversing the positive and negative terminals, the direction of current flow changes. Using Ampere's law, the direction of the magnetic field can be determined.

[0032] In one embodiment, the current magnetic effect module includes a second battery 8, a DC energized coil 81 connected to the second battery 8, and magnetic needles 82 placed on both sides of the DC energized coil 81.

[0033] In the experiment on the magnetic effect of current: the DC-powered coil 81 is energized by battery 28. After being energized, the DC-powered coil 81 generates a magnetic field. The magnetic field causes the magnetic needles 82 on both sides of the DC-powered coil 81 to rotate. The direction of the N pole of the small magnetic needle 82 when it is stationary and the direction of the current displayed by the light-emitting diode 72 can very intuitively show students the direction of the current in a straight conductor, helping them to better understand the relationship between the direction of current and magnetic field. Students can also observe the on / off state of the traffic light 73 and, in conjunction with the direction of the N pole of the magnetic needle 82 when it is stationary, think more deeply about the relationship between current, magnetic field and magnetic field lines.

[0034] In one embodiment, a magnetoelectric module is also included, which comprises a hand-cranked generator module and a wireless charging module; the hand-cranked generator module comprises a turntable seat 9 mounted on a base 2, a rotor seat 91 movably mounted on the turntable seat 9, a hand-cranked turntable 92 connected to the rotor seat 91 via a belt, a plurality of coils 93 mounted on the turntable seat 9 and located outside the rotor seat 91, and a voltmeter 94 and a light bulb 95 electrically connected to the coils 93; the voltmeter 94 is electrically connected to a battery 96; and the rotor seat 91 is equipped with a plurality of magnets 97 corresponding to the coils 93.

[0035] When conducting the hand-cranked generator experiment: the hand-cranked turntable 92 is manually cranked, and the hand-cranked turntable 92 drives the rotor base 91 to rotate via the belt, thereby rotating the magnet 97 placed on the rotor base 91. The closed coil 93 cuts the magnetic field lines, generating an induced current in the coil 93. The voltage is displayed by the voltmeter 94, and the bulb 95 lights up at the same time.

[0036] The experimental principle is based on electromagnetic induction: a closed conductor moving in a magnetic field, cutting magnetic field lines, will generate an induced current. Induced current: when the magnetic flux through the closed conductor loop changes, an induced current is generated in the conductor loop.

[0037] In one embodiment, the wireless charging module includes a transmitting coil 10 placed on a base 2, a power supply electrically connected to the transmitting coil 10, a receiving coil 11, and a light bulb 12 electrically connected to the receiving coil 11.

[0038] When conducting a wireless charging experiment: When the transmitting coil 10 is energized by the power supply, an alternating magnetic field is generated around the transmitting coil 10 when an alternating current passes through it. When the receiving coil 11 is moved into the alternating magnetic field, an electromotive force will be induced in the receiving coil 11 according to the law of electromagnetic induction. At this time, the light bulb 12, which is electrically connected to the receiving coil 11, receives the current and lights up.

[0039] The scope of protection of this utility model is not limited to the above embodiments and their variations. Conventional modifications and substitutions made by those skilled in the art based on the content of these embodiments are all within the scope of protection of this utility model.

Claims

1. An integrated electromagnetic science popularization and teaching tool, characterized in that: It includes a transparent box (1), a base (2) placed inside the box (1), and an electrical module placed on the box (1); the electrical module includes a Tesla coil (3) placed on the upper part of the box (1), a kite (4) placed inside the box (1), a metal wire (41) connected to the kite (4), and a light bulb (42) placed on the base (2) and connected to the metal wire (41).

2. The integrated electromagnetic science popularization teaching tool according to claim 1, characterized in that: The electrical module also includes a salt water box (5), zinc sheet (51) and copper sheet (52) placed inside the salt water box (5) without contact, and a second light bulb (53) connected to the zinc sheet (51) and copper sheet (52) by wires.

3. The integrated electromagnetic science popularization teaching aid according to claim 1, characterized in that: It also includes a magnetic module placed on the base (2), the magnetic module comprising a magnetic seesaw and magnetic levitation; the magnetic seesaw comprises a support (6), a bracket (61) set on the support (6), a seat plate (62) movably installed on the bracket (61) and magnets (63) placed at both ends of the support (6) and the seat plate (62), and the magnets (63) on the same side of the support (6) and the seat plate (62) are arranged in the same level relative to each other.

4. The integrated electromagnetic science popularization teaching aid according to claim 3, characterized in that: The magnetic levitation includes an annular magnet (64) placed on the base (2), a suspension magnet (65) placed on the annular magnet (64) and arranged in the same order as the annular electromagnet, two Hall elements arranged at the center of the annular magnet (64) and perpendicular to each other, and an MCU connected to the Hall elements and the annular magnet (64).

5. The integrated electromagnetic science popularization teaching tool according to claim 1, characterized in that: It also includes an electromagnetism module, which includes a traffic light (73) module and a current magnetic effect module; the traffic light (73) module includes a battery (71), a circuit board (7) connected to the battery (71) by a line, and several light-emitting diodes (72) electrically connected to the circuit board (7), the light-emitting diodes (72) including a green light (73) and a red light (74).

6. The integrated electromagnetic science popularization teaching aid according to claim 5, characterized in that: The current magnetic effect module includes a second battery (8), a DC energized coil (81) connected to the second battery (8), and magnetic needles (82) placed on both sides of the DC energized coil (81).

7. An integrated electromagnetic science popularization teaching tool according to claim 1, characterized in that: It also includes a magnetoelectric module, which includes a hand-cranked generator module and a wireless charging module; the hand-cranked generator module includes a turntable seat (9) mounted on the base (2), a rotor seat (91) movably mounted on the turntable seat (9), a hand-cranked turntable (92) connected to the rotor seat (91) by a belt, several coils (93) mounted on the turntable seat (9) and located outside the rotor seat (91), and a voltmeter (94) and a bulb three (95) electrically connected to the coils (93); the voltmeter (94) is electrically connected to a battery three (96); the rotor seat (91) is equipped with several magnets two (97) corresponding to the coils (93).

8. An integrated electromagnetic science popularization teaching aid according to claim 7, characterized in that: The wireless charging module includes a transmitting coil (10) placed on a base (2), a power supply electrically connected to the transmitting coil (10), a receiving coil (11), and a light bulb (12) electrically connected to the receiving coil (11).

Images