Experimental device for simulating electrostatic shielding by Tesla coil
Through the combination of Tesla coils, LED spiral tubes and metal mesh covers, combined with microcurrent sensors, the problem that existing devices cannot simulate the electrostatic shielding effect is solved, a safe and efficient electromagnetic field display is achieved, and students' learning experience is enhanced.
Patent Information
- Application Number
- CN202422330735.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-09-24
AI Technical Summary
Existing experimental devices cannot safely and efficiently simulate and demonstrate the electrostatic shielding effect, resulting in students being unable to intuitively feel the distribution and changes of the electromagnetic field.
Using a combination of Tesla coils, LED spiral tubes, metal mesh covers, insulated wires, and test modules, the system demonstrates the phenomenon of lighting up a lamp in mid-air and uses a microcurrent sensor to quantitatively verify the shielding effect, thereby displaying the distribution and changes of the electric field.
It achieves a safe and efficient simulation of the electrostatic shielding effect, allowing students to intuitively feel the distribution and changes of the electromagnetic field, thereby improving learning outcomes.
Smart Images
Figure CN223413797U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of experimental teaching equipment, in particular to an experimental device for simulating electrostatic shielding with a Tesla coil. Background Art
[0002] Electrostatic shielding is an important technology used to prevent electrostatic interference and protect electronic devices and sensitive components from damage. The principle is to place a conductive layer around an electrostatically sensitive area to prevent the penetration of the electrostatic field. Factors such as the thickness, shape, and continuity of the conductive layer affect the shielding effect. Generally speaking, the thicker, more complete, and more spherical the conductive layer, the better the shielding effect.
[0003] At present, by combining the Tesla coil with the electrostatic shielding experiment, a vivid and intuitive learning platform can be provided for students.
[0004] However, existing experimental devices cannot safely and efficiently simulate and demonstrate the electrostatic shielding effect, resulting in students being unable to intuitively feel the distribution and changes of the electromagnetic field. Utility Model Content
[0005] The purpose of the utility model is to provide an experimental device for simulating electrostatic shielding with a Tesla coil, aiming to solve the technical problem that the existing experimental device cannot safely and efficiently simulate and demonstrate the electrostatic shielding effect, resulting in students being unable to intuitively feel the distribution and changes of the electromagnetic field.
[0006] To achieve the above-mentioned purpose, the utility model adopts an experimental device for simulating electrostatic shielding using a Tesla coil, comprising a Tesla coil, an LED spiral lamp tube, a metal mesh cover, a bulb base, an insulating wire, and a test module, wherein the bulb base is located on one side of the Tesla coil, the LED spiral lamp tube is connected to the bulb base and is located on one side of the Tesla coil, the metal mesh cover is movably sleeved on the outside of the LED spiral lamp tube and the Tesla coil, respectively, and the insulating wire is connected to the metal mesh cover and is located above the metal mesh cover;
[0007] The test module includes a paper box, two first scale bars, a microcurrent sensor and a limit unit. The paper box is arranged below the Tesla coil. The two first scale bars are fixedly connected to the paper box and are symmetrically arranged above the paper box. The limit unit is arranged on the paper box. The Tesla coil is located in the limit unit. The microcurrent sensor is located on the two scale bars.
[0008] Wherein, the limiting unit includes two limiting frames, and the two limiting frames are fixedly connected to the paper box and symmetrically arranged above the paper box.
[0009] Among them, the experimental device for simulating electrostatic shielding of the Tesla coil also includes a cardboard bracket and a second scale bar. The cardboard bracket is arranged on the outside of the Tesla coil, and the second scale bar is fixedly connected to the cardboard bracket and is located above the cardboard bracket.
[0010] Wherein, the power of the LED spiral lamp is 5W.
[0011] Wherein, the metal mesh cover has a plurality of diamond-shaped meshes with a mesh side length of 2 mm.
[0012] The utility model discloses an experimental device for simulating electrostatic shielding with a Tesla coil. When the Tesla coil and the LED spiral lamp are used to demonstrate the phenomenon of lighting up in the air, the Tesla coil is connected to a power source. After a period of time, an LED spiral lamp is taken and brought close to the Tesla coil from a distance. When one hand gradually covers the LED spiral lamp with the metal mesh cover, it is found that the LED spiral lamp does not light up at this time. The insulating wire above the metal mesh cover is lifted or another person is asked to cover the LED spiral lamp with the metal mesh cover. The LED spiral lamp still lights up. The Tesla coil is placed in the metal mesh cover. One end of the LED spiral lamp is held close to the metal mesh cover. The LED spiral lamp lights up. If the hand is held If the experimenter of the LED spiral lamp tube touches the metal mesh cover with his hand at this time, the LED spiral lamp tube will no longer emit light. When the LED spiral lamp tube is placed on an insulating bracket and close to the Tesla coil, it will be found that the LED spiral lamp tube emits light. If the metal mesh cover is used to cover the LED spiral lamp tube at this time, the LED spiral lamp tube will no longer emit light. Analysis of the phenomenon: Because the electric field in the space around the Tesla coil is very strong, even if one pole of the LED spiral lamp tube is not held, there will be a large enough potential difference between the two poles of the bulb to make it emit light. When the metal mesh cover covers the LED spiral lamp tube, the potential in the space inside the mesh cover is equal everywhere, and there is no potential difference between the two poles of the LED spiral lamp tube, so the LED spiral lamp tube no longer emits light.
[0013] When using the microcurrent sensor and the Tesla coil to quantitatively verify the shielding effect, the Tesla coil is connected to the power supply. After it stabilizes, it is placed on the paper box with the first scale bar, ensuring that the first scale bar is evenly distributed on both sides of the coil. Then, the microcurrent sensor is used to move from left to right at a fixed point at intervals of 1 cm, and the current reading displayed on the computer is recorded and observed to generate the following Figure 4The current distribution image shown. The results show that as the distance from the center of the coil increases, the current intensity gradually decreases, indicating that the electric field intensity is symmetrically distributed, and the electric field intensity reaches a minimum value at a distance of about 7 cm from the left and right sides of the coil, which can be regarded as the boundary of the electric field excited by the coil; the Tesla coil is connected to the power supply, and one of the LED spiral lamps is taken, and is moved away from the coil from near to far at intervals of 0.5 cm. To ensure the convenience of operation, the red test lead of the microcurrent sensor is connected to the tail of the LED spiral lamp, and the current reading displayed on the computer is observed and recorded to generate the following Figure 5 The current variation image shown in the figure shows the current intensity at different positions of the LED spiral lamp, reflecting the changes in electric field intensity. Through the above method, the electrostatic shielding effect can be simulated and demonstrated safely and efficiently, allowing students to intuitively experience the distribution and changes of the electromagnetic field, facilitating their learning. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.
[0015] Figure 1 The utility model is a structural schematic diagram of a Tesla coil and an LED spiral lamp tube for demonstrating remote lighting.
[0016] Figure 2 It is a structural schematic diagram of the micro-current sensor and Tesla coil of the utility model for quantitatively verifying the shielding effect.
[0017] Figure 3 It is a structural schematic diagram of the micro-current sensor, Tesla coil quantitative measurement and metal mesh cover for verifying shielding effect of the utility model.
[0018] Figure 4 It is a schematic diagram of the strength of the current generated around the Tesla coil of the present invention.
[0019] Figure 5 This is a schematic diagram of the current changes flowing through the LED lamp of the present invention.
[0020] Figure 6 It is a schematic diagram of the shielding effect of the metal mesh cover of the present invention.
[0021] Figure 7 This is a schematic diagram comparing the shielding effects of metal mesh covers at the same position in the present invention.
[0022] 101-Tesla coil, 102-LED spiral lamp tube, 103-metal mesh cover, 104-lamp base, 105-insulated wire, 106-paper box, 107-first scale bar, 108-microcurrent sensor, 109-limiting frame, 110-cardboard support, 111-second scale bar. DETAILED DESCRIPTION
[0023] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.
[0024] See also Figures 1 to 7 The present invention provides an experimental device for simulating electrostatic shielding using a Tesla coil, comprising a Tesla coil 101, an LED spiral lamp tube 102, a metal mesh cover 103, a bulb base 104, an insulating wire 105, and a test module. The bulb base 104 is located on one side of the Tesla coil 101. The LED spiral lamp tube 102 is connected to the bulb base 104 and is located on one side of the Tesla coil 101. The metal mesh cover 103 is movably mounted on the outside of the LED spiral lamp tube 102 and the Tesla coil 101, respectively. The insulating wire 105 is connected to the metal mesh cover 103 and is located above the metal mesh cover 103.
[0025] The test module includes a paper box 106, two first scale bars 107, a microcurrent sensor 108 and a limit unit. The paper box 106 is arranged below the Tesla coil 101. The two first scale bars 107 are fixedly connected to the paper box 106 and are symmetrically arranged above the paper box 106. The limit unit is arranged on the paper box 106, the Tesla coil 101 is located in the limit unit, and the microcurrent sensor 108 is located on the two scale bars.
[0026] In this embodiment, when using a Tesla coil 101 and an LED spiral light tube 102 to demonstrate the phenomenon of lighting up a lamp from a distance, the Tesla coil 101 is connected to a power source. After a period of time, one of the LED spiral light tubes 102 is taken and brought close to the Tesla coil 101 from a distance. It is found that the LED spiral light tube 102 will emit light, and the closer it is to the Tesla coil 101, the brighter the light emitted by the LED spiral light tube 102. Analysis of the phenomenon: Holding the LED spiral light tube 102 is equivalent to being grounded. The fact that the LED spiral light tube 102 emits light indicates that there is a certain potential difference between the space where its other pole is located and the grounding point. The closer the light bulb is to the coil, the brighter it is, and it is brightest when it touches the top of the coil. This indicates that the closer the measured point is to the coil, the greater the potential difference between it and the ground, and the stronger the electric field.
[0027] When one hand holds the metal mesh cover 103 and gradually covers the LED spiral lamp tube 102, it is found that the LED spiral lamp tube 102 is not lit at this time. The insulating wire 105 above the metal mesh cover 103 is lifted or another person is asked to hold the metal mesh cover 103 to cover the LED spiral lamp tube 102, and the LED spiral lamp tube 102 will still glow. When the Tesla coil 101 is placed in the metal mesh cover 103 and one end of the LED spiral lamp tube 102 is held close to the metal mesh cover 103, the LED spiral lamp tube 102 will glow. If the experimenter holding the LED spiral lamp tube 102 touches the metal mesh cover 103 with his hand at this time, the LED spiral lamp tube 102 will no longer glow. Analysis of the phenomenon: when the metal mesh cover 103 covers the LED lamp, due to electrostatic balance, the electric potential of the internal space of the metal mesh cover 103 is equal everywhere and equal to the electric potential of the inner and outer surfaces of the metal mesh cover 103. When the metal mesh cover 103 is held by hand, the electric potential of the metal mesh cover 103 is the same as that of the human body, so that the potential difference originally existing at the two poles of the bulb disappears, and the bulb does not light up. When the insulating wire 105 is carried to cover the bulb, the electric potential of the metal mesh cover 103 is not equal to that of the human body, so there is still a potential difference between the other pole of the bulb and the pole held by the operator, so the LED spiral lamp tube 102 still emits light. After the metal mesh cover 103 covers the Tesla coil 101, it is equivalent to placing a charged conductor in the conductor cavity. Its electric field will induce equal amounts of opposite charges on the inner and outer surfaces of the metal mesh cover 103. Although the internal electric field lines terminate at the inner surface, the electric field generated by the external induced charges still affects the external space, so the bulb still emits light. However, after the metal mesh cover 103 is touched by the hand, the electric potential of the metal mesh cover 103 will be equal to the electric potential of the operator's body. Therefore, the electric field of the Tesla coil 101 inside the metal mesh cover 103 cannot affect the space outside the metal mesh cover 103, so the LED spiral lamp tube 102 no longer emits light.
[0028] When the LED spiral lamp 102 is placed on an insulating bracket and close to the Tesla coil 101, it will be found that the LED spiral lamp 102 emits light; if the metal mesh cover 103 is used to cover the LED spiral lamp 102 at this time, the LED spiral lamp 102 no longer emits light. Analysis of the phenomenon: Because the electric field in the space around the Tesla coil 101 is very strong, even if one pole of the LED spiral lamp 102 is not held, there will be a large enough potential difference between the two poles of the bulb to make it emit light. When the metal mesh cover 103 covers the LED spiral lamp 102, the potential in the space inside the mesh cover is equal everywhere, and there is no potential difference between the two poles of the LED spiral lamp 102, so the LED spiral lamp 102 no longer emits light.
[0029] When using the microcurrent sensor 108 and the Tesla coil 101 to quantitatively verify the shielding effect, the Tesla coil 101 is powered on. After stabilization, it is placed on the paper box 106 with the first scale bar 107, ensuring that the first scale bar 107 is evenly distributed on both sides of the coil. Subsequently, the microcurrent sensor 108 is moved from left to right at a fixed point at intervals of 1 cm, and the current reading displayed on the computer is recorded and observed to generate the following: Figure 4 The current distribution image shown. The results show that as the distance from the center of the coil increases, the current intensity gradually decreases, indicating that the electric field intensity is symmetrically distributed, and the electric field intensity reaches a minimum value at a distance of about 7 cm from the left and right sides of the coil, which can be regarded as the boundary of the electric field excited by the coil; the Tesla coil 101 is connected to the power supply, and one of the LED spiral lamps 102 is taken, and is moved away from the coil from near to far at intervals of 0.5 cm. To ensure the convenience of operation, the red test lead of the microcurrent sensor 108 is connected to the tail of the LED spiral lamp 102, and the current reading displayed on the computer is observed and recorded to generate the following Figure 5 The current variation image shown in the figure shows the current intensity of the LED spiral lamp 102 at different positions, reflecting the change of electric field intensity. Through the above method, the electrostatic shielding effect can be simulated and demonstrated safely and efficiently, allowing students to intuitively experience the distribution and changes of the electromagnetic field, facilitating their learning.
[0030] Furthermore, the limiting unit includes two limiting frames 109 , and the two limiting frames 109 are both fixedly connected to the paper box 106 and symmetrically arranged above the paper box 106 .
[0031] In this embodiment, the limiting frame 109 is provided above the paper box 106 , and the limiting frame 109 positions the Tesla coil 101 above the paper box 106 , so that the Tesla coil 101 can be accurately placed above the paper box 106 .
[0032] Furthermore, the experimental device for simulating electrostatic shielding with a Tesla coil also includes a cardboard support 110 and a second scale bar 111. The cardboard support 110 is arranged on the outside of the Tesla coil 101, and the second scale bar 111 is fixedly connected to the cardboard support 110 and is located above the cardboard support 110.
[0033] In this embodiment, the metal mesh cover 103 is used to cover the Tesla coil 101, and the cardboard support 110 with the second scale bar 111 is placed on the right side of the metal mesh cover 103 and adjusted to the same height as the Tesla coil 101. The red test lead of the microcurrent sensor 108 is held and moved away from the metal mesh cover 103 at intervals of 0.5 cm from near to far, and the current reading is recorded to generate the following: Figure 7 By comparing the experimental data, the shielding effect of the metal mesh cover 103 can be clearly observed, that is, the current behind the metal mesh cover 103 is significantly reduced, even approaching zero, which clearly demonstrates the electrostatic shielding phenomenon. In addition, the shielding effect of the metal mesh cover 103 is analyzed. The current before and after the shielding of the metal mesh cover 103 at the same position from the coil is recorded by the microcurrent sensor 108, which are current 1 and current 2 respectively, and then defined;
[0034]
[0035] Based on the experimental data, it can be concluded that within the allowable error range, the shielding effects of the metal mesh cover 103 at different positions are approximately the same, which further verifies the effective shielding effect of the metal mesh cover 103 on the electric field.
[0036] Furthermore, the power of the LED spiral lamp tube 102 is 5W.
[0037] Furthermore, the metal mesh cover 103 has a plurality of diamond-shaped meshes with a side length of 2 mm.
[0038] In this embodiment, the size and shape of the holes in the metal mesh cover 103 have a significant impact on the electrostatic shielding effect. The smaller the mesh, the better the shielding effect. Under the same conditions, the shielding effect of the diamond mesh is better than that of the square mesh.
[0039] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the utility model.
Claims
1. An experimental device for simulating electrostatic shielding with a Tesla coil, characterized in that: The device comprises a Tesla coil, an LED spiral lamp tube, a metal mesh cover, a bulb base, an insulating wire, and a test module. The bulb base is located on one side of the Tesla coil. The LED spiral lamp tube is connected to the bulb base and is located on one side of the Tesla coil. The metal mesh cover is movably mounted on the outside of the LED spiral lamp tube and the Tesla coil. The insulating wire is connected to the metal mesh cover and is located above the metal mesh cover. The test module includes a paper box, two first scale bars, a microcurrent sensor and a limit unit. The paper box is arranged below the Tesla coil. The two first scale bars are fixedly connected to the paper box and are symmetrically arranged above the paper box. The limit unit is arranged on the paper box. The Tesla coil is located in the limit unit. The microcurrent sensor is located on the two scale bars.
2. The experimental device for simulating electrostatic shielding with a Tesla coil as claimed in claim 1, characterized in that: The limiting unit includes two limiting frames, both of which are fixedly connected to the paper box and symmetrically arranged above the paper box.
3. The experimental device for simulating electrostatic shielding with a Tesla coil as claimed in claim 1, characterized in that: The experimental device for simulating electrostatic shielding with a Tesla coil also includes a cardboard bracket and a second scale bar. The cardboard bracket is arranged on the outside of the Tesla coil. The second scale bar is fixedly connected to the cardboard bracket and is located above the cardboard bracket.
4. The experimental device for simulating electrostatic shielding with a Tesla coil as claimed in claim 1, characterized in that: The power of the LED spiral lamp is 5W.
5. The experimental device for simulating electrostatic shielding with a Tesla coil as claimed in claim 1, characterized in that: The metal mesh cover has a plurality of diamond-shaped meshes with a mesh side length of 2 mm.