Education and science popularization type seismograph

Abstract

The utility model relates to the technical field of seismographs, in particular to an education and science popularization type seismograph. Comprising a bottom plate, a vibration picking assembly and a vibration displaying assembly, and the vibration picking assembly and the vibration displaying assembly are arranged on the bottom plate and are in signal connection through a controller; wherein the vibration pick-up assembly is configured to pick up a vibration signal, so that the vibration signal is displayed by the vibration display assembly after being converted by the controller. On the premise that the teaching aid is convenient to carry and convenient to demonstrate, the working principle of a modern seismograph is visually displayed, a seismic oscillogram closer to seismic analysis in reality is provided for teaching and science popularization of seismic principles and phenomena, a field analysis basis is provided for follow-up seismic source measurement and calculation, magnitude division and the like, and the teaching aid is worthy of popularization and application. And the professionality, comprehensiveness and effect of earthquake science popularization and teaching are improved.

Description

Technical Field

[0001] This utility model relates to the field of seismograph technology, and in particular to an educational and popular science seismograph. Background Technology

[0002] As the name suggests, a seismograph is a device used for professional earthquake monitoring, typically employing electronic sensors and digital technology to record seismic waves. However, in current earthquake knowledge dissemination and classroom teaching, the seismographs used often only demonstrate the occurrence and state of earthquakes through sound and light. The highly integrated seismographs used in classroom teaching fail to provide a direct and intuitive demonstration of their working principles. For example, patent CN206369815U, entitled "A Utility Model Patent for an Educational Earthquake Alarm Device," uses a wire to suspend a glass ball. This wire passes through a slot on an electrode. When a simulated vibration occurs, the suspended glass ball captures this vibration and causes the wire to swing or sway synchronously. The swaying wire inevitably contacts the wall of the slot, activating the internal circuitry of the earthquake alarm device. This triggers an alarm sound and a warning light, respectively, helping students understand the working principle and components of an earthquake alarm device, achieving a more engaging teaching approach.

[0003] As is well known, professional earthquake analysis often focuses on earthquake waveforms, as they reflect information such as the depth, orientation, and magnitude of the epicenter. While the aforementioned earthquake alarm can demonstrate the occurrence of an earthquake and the device's response principle, such a device with only sound and light alarms is clearly insufficient when instructors need to delve deeper into issues such as earthquake measurement and origin.

[0004] Therefore, it is essential to provide a seismograph that is easy to demonstrate, portable, and capable of professionally displaying seismic waveforms to aid teaching. Utility Model Content

[0005] Traditional seismograph teaching aids are merely seismometers (devices that indicate whether an earthquake has occurred). They often only reflect the instantaneous changes and phenomena during an earthquake through sound and light, making it difficult to reflect the entire earthquake process through seismic waveform recordings. This is not conducive to teaching or popularizing science by using seismic waveforms to explain the analytical principles of earthquake sources, magnitudes, and other information in greater depth. The seismograph proposed in this application, however, is based on the principle of electromagnetic induction. It utilizes the change in current caused by the relative motion of coils and magnets during vibration, and displays this current change as a seismic waveform through analog-to-digital conversion, facilitating later popular science education and teaching.

[0006] The specific technical solution is as follows: This utility model provides an educational and popular science seismograph, including a base plate, a seismic pickup component and a seismic display component disposed on the base plate, wherein the seismic pickup component and the seismic display component are connected by a controller signal; wherein the seismic pickup component is configured to pick up vibration signals, and the vibration signals are converted by the controller signal and displayed by the seismic display component.

[0007] Preferably, the vibration pickup assembly includes a cylindrical coil and a cylindrical magnet. The cylindrical coil is inserted vertically into a groove on the bottom plate with its opening facing upwards. A suspension frame is also provided directly above the cylindrical coil. The suspension frame suspends the cylindrical magnet coaxially inside the cylindrical coil via a suspension rope. The cylindrical coil is electrically connected to a controller, which reads the induced current generated by the cylindrical coil cutting the magnetic field lines of the magnet.

[0008] Preferably, the suspension rope is a spring.

[0009] Preferably, the vibration display assembly includes a drawing pen, a servo motor that drives the drawing pen to swing, a bracket and legs that fix the servo motor to the base plate, and a paper supply structure that continuously supplies drawing paper to the drawing pen; the direction of movement of the drawing paper is perpendicular to the direction of swing of the drawing pen.

[0010] Preferably, the paper feeding structure includes an active roller and a passive roller for tensioning the conveyor belt. The active roller and the passive roller are rotatably mounted at the front and rear ends of the frame, respectively. The frame is mounted below the bracket and ensures that the tensioned conveyor belt and the drawing paper laid flat on the surface of the conveyor belt are in contact with the tip of the drawing pen.

[0011] The conveyor belt is composed of coarse cloth strips connected end to end, forming a closed loop, with the driving roller and the driven roller located inside the loop structure formed by the conveyor belt.

[0012] The paper feeding structure also includes an auxiliary roller and a motor that drives the auxiliary roller to rotate circumferentially. The auxiliary roller is rotatably installed in the frame at one end near the active roller, and the outer diameter of the auxiliary roller is larger than the outer diameter of the active roller and the passive roller.

[0013] Preferably, the surface of the auxiliary roller is covered with a rubber layer, and the surface of the rubber layer is uniformly provided with V-shaped grooves.

[0014] Preferably, the base plate is further covered with an outer shell, which is made of plexiglass.

[0015] Preferably, the controller is either an ESP32 or a Raspberry Pi microcontroller.

[0016] Compared to traditional educational seismographs, this invention incorporates the principle of electromagnetic induction during vibration capture. While the magnet is suspended to capture vibrations, the coil cuts the magnetic field lines around the magnet, converting the vibration signal into a current signal. This current signal is then converted into an analog-to-electrical signal by an ESP32 microcontroller, which controls a servo motor to swing and draw the seismic waveform. Thus, while maintaining the portability and ease of demonstration required of educational tools, this invention provides a more realistic seismic waveform diagram for teaching and popularizing earthquake principles and phenomena. It offers on-site analytical basis for subsequent earthquake source calculation and magnitude classification, improving the professionalism, comprehensiveness, and effectiveness of earthquake science popularization and teaching. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of this utility model is shown;

[0018] Figure 2 A schematic diagram of the structure of the bracket of this utility model is shown;

[0019] Figure 3 A schematic diagram of the support leg of this utility model is shown;

[0020] Figure 4 A schematic diagram of the structure of the suspension frame of this utility model is shown;

[0021] Figure 5 A schematic diagram of the structure of the frame of this utility model is shown;

[0022] Figure 6 A schematic diagram of the auxiliary roller of this utility model is shown;

[0023] Figure 7 A schematic diagram of the coil structure of this utility model is shown;

[0024] Figure 8 A schematic diagram of the structure of the base plate of this utility model is shown;

[0025] Figure 9 A schematic diagram of the structure of the spring of this utility model is shown;

[0026] Figure 10 A schematic diagram of the structure of the active roller of this utility model is shown;

[0027] In the diagram: 1. Base plate, 2. Motor, 3. Coil, 4. Suspension bracket, 5. Spring, 6. Servo motor, 7. Bracket, 8. Support leg, 9. Active roller, 10. Auxiliary roller, 11. Frame, 12. V-shaped groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-10 This utility model provides a technical solution: an educational and popular science seismograph, including a base plate 1, a seismic pickup component and a seismic display component disposed on the base plate 1, wherein the seismic pickup component and the seismic display component are connected by a controller signal; wherein the seismic pickup component is configured to pick up vibration signals, and the vibration signals are converted by the controller signal and displayed by the seismic display component.

[0030] The vibration pickup assembly includes a cylindrical coil 3 and a cylindrical magnet. The cylindrical coil 3 is inserted vertically into a groove on the base plate 1 with its opening facing upwards. A suspension frame 4 is also provided directly above the cylindrical coil 3. The suspension frame 4 suspends the cylindrical magnet coaxially inside the cylindrical coil 3 by a suspension rope. The cylindrical coil 3 is electrically connected to a controller, which reads the induced current generated by the cylindrical coil 3 cutting the magnetic field lines of the magnet.

[0031] The vibration display assembly includes a drawing pen, a servo motor 6 that drives the drawing pen to swing, a bracket 7 and a support leg 8 that fix the servo motor 6 on the base plate 1, and a paper supply structure that continuously supplies drawing paper to the drawing pen; the direction of movement of the drawing paper is perpendicular to the direction of swing of the drawing pen.

[0032] The paper feeding structure includes an active roller 9 and a passive roller for tensioning the conveyor belt. The active roller 9 and the passive roller are rotatably mounted at the front and rear ends of the frame 11, respectively. The frame 11 is mounted below the bracket 7 and ensures that the tensioned conveyor belt and the drawing paper laid flat on the surface of the conveyor belt are in contact with the tip of the drawing pen.

[0033] The conveyor belt is composed of a coarse cloth belt connected end to end, forming a closed loop. The active roller 9 and the passive roller are located inside the loop structure formed by the conveyor belt.

[0034] The paper feeding structure also includes an auxiliary roller 10 and a motor 2 that drives the auxiliary roller 10 to rotate circumferentially. The auxiliary roller 10 is rotatably installed in the frame 11 at one end near the active roller 9, and the outer diameter of the auxiliary roller 10 is larger than the outer diameter of the active roller 9 and the passive roller.

[0035] The base plate 1 is also covered with an outer shell, which is made of plexiglass.

[0036] The controller is either an ESP32 or a Raspberry Pi microcontroller.

[0037] This invention utilizes the principle of electromagnetic induction. First, a coil 3 is installed on a base plate 1. Then, a cylindrical magnet is suspended inside the coil 3 using a suspension frame 4 and a suspension rope, ensuring that the magnet and coil 3 are installed coaxially. Upon sensing vibration, the magnet inside the coil 3 vibrates up and down due to the suspension rope. Because of the relative motion between the magnet and coil 3, coil 3 continuously cuts the magnetic field lines around the magnet, generating an induced current. Coil 3 then transmits this current to the controller. Thus, the vibration signal is captured through the vibration of the magnet within coil 3, and the captured vibration signal is converted into an induced current signal through the principle of electromagnetic induction.

[0038] The current signal is then transmitted to the ESP32 microcontroller via wires, which performs analog-to-digital conversion on the current signal and sends the converted digital signal to the servo motor 6. The servo motor 6 controls the deflection of the drawing pen fixed at its output shaft. At this time, a frame 11 is fixedly installed below the drawing pen on the support leg 8. The front and rear ends of the frame 11 are respectively equipped with an active roller 9 and a passive roller. The active roller 9 and the passive roller open the closed annular conveyor belt to both sides, so that the conveyor belt is taut to form a structure similar to a conveyor belt or a track and field track. The drawing paper is then laid flat on the upper surface of the conveyor belt. When the conveyor belt moves, the friction between it and the drawing paper causes the drawing paper to move synchronously, completing the continuous feeding of the drawing paper so that the drawing pen can draw seismic waveforms on the paper.

[0039] Meanwhile, an auxiliary roller 10 is also installed within the frame 11. Since the outer diameter of the auxiliary roller 10 is larger than that of the active roller 9 and the passive roller, when the motor 2 drives the auxiliary roller 10 to rotate, the outer surface of the auxiliary roller 10 will inevitably lift the conveyor belt, thereby generating sufficient friction to cause the conveyor belt to move tangentially to the auxiliary roller 10 as it rotates, thus completing the continuous supply of drawing paper to the surface of the conveyor belt. At this time, the oscillating drawing pen will draw a seismic waveform diagram on the drawing paper that is moving horizontally relative to the drawing pen. The teacher can feed the paper from one end of the seismograph, and after recording the waveform, demonstrate and explain.

[0040] Among them, such as Figure 1 As shown, in order to improve the sensitivity of the seismograph in sensing or capturing vibration signals, it is preferable to set the suspension rope as spring 5, thereby ensuring that even if the vibration amplitude is small, spring 5 can assist the magnet in vibrating and capture the vibration signal.

[0041] like Figure 6 As shown, the auxiliary roller 10 has a rubber layer on its surface, and the surface of the rubber layer has V-shaped grooves 12 evenly formed.

[0042] To ensure the smooth movement of the drawing paper, the auxiliary roller 10 has sufficient friction with the conveyor belt. A rubber layer with better anti-slip properties is selected and fitted over the outside of the auxiliary roller 10. A V-shaped groove 12 is made on the surface of the rubber layer, so that the outer surface of the entire auxiliary roller 10 is approximately gear-like. The rubber part, which resembles gear teeth, will deform and bend due to the pressure from the tensioned conveyor belt. This further increases the friction between the conveyor belt and the auxiliary roller, ensuring a smooth and continuous supply of drawing paper.

[0043] In addition, a glass shell is also fitted on the top of the base plate 1. This shell is upside down on the top of the base plate 1. On the one hand, it can ensure that the magnet will not be affected by external wind or airflow during the demonstration without affecting external observation. On the other hand, it can prevent dust accumulation when the seismograph is stored or not in use.

[0044] This invention incorporates the principle of electromagnetic induction during vibration capture. Due to the up-and-down vibration of the magnet, coil 3 moves relative to the magnet, cutting the magnetic field lines around it and converting the vibration signal into a current signal. This current signal is then converted from analog to electronic signal by an ESP32 microcontroller or a Raspberry Pi microcontroller, controlling a servo motor 6 to move a drawing pen across continuously supplied drawing paper, thus creating the seismic waveform diagram. This provides a more realistic seismic waveform diagram for teaching and popularizing earthquake principles and phenomena, while maintaining portability and ease of demonstration. It also provides on-site analytical basis for subsequent earthquake source calculation and magnitude classification, enhancing the professionalism, comprehensiveness, and effectiveness of earthquake science popularization and teaching.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An educational and popular science seismograph, characterized by: It includes a base plate (1), a vibration pickup component and a vibration display component disposed on the base plate (1), wherein the vibration pickup component and the vibration display component are connected by a controller signal; wherein the vibration pickup component is configured to pick up vibration signals, and the vibration signals are converted by the controller signal and displayed by the vibration display component; The vibration pickup assembly includes a cylindrical coil (3) and a cylindrical magnet. The cylindrical coil (3) is inserted vertically into a groove on the base plate (1) with its opening facing upwards. A suspension frame (4) is also provided directly above the cylindrical coil (3). The suspension frame (4) suspends the cylindrical magnet coaxially inside the cylindrical coil (3) via a suspension rope. The cylindrical coil (3) is electrically connected to a controller, which reads the induced current generated by the cylindrical coil (3) cutting the magnetic field lines of the magnet. The suspension rope is a spring (5). The vibration display assembly includes a drawing pen, a servo motor (6) that drives the drawing pen to swing, a bracket (7) and a support leg (8) that fix the servo motor (6) on the base plate (1), and a paper supply structure that continuously supplies drawing paper to the drawing pen; the direction of movement of the drawing paper is perpendicular to the direction of swing of the drawing pen; The paper feeding structure includes an active roller (9) and a passive roller for tensioning the conveyor belt. The active roller (9) and the passive roller are rotatably mounted at the front and rear ends of a frame (11), respectively. The frame (11) is mounted below the bracket (7) and ensures that the tensioned conveyor belt and the drawing paper laid flat on the surface of the conveyor belt are in contact with the tip of the drawing pen. The conveyor belt is composed of a coarse cloth belt connected end to end, forming a closed loop. The active roller (9) and the passive roller are located inside the loop structure formed by the conveyor belt. The paper feeding structure also includes an auxiliary roller (10) and a motor (2) that drives the auxiliary roller (10) to rotate circumferentially. The auxiliary roller (10) is rotatably installed in the frame (11) at one end near the active roller (9), and the outer diameter of the auxiliary roller (10) is larger than the outer diameters of the active roller (9) and the passive roller.

2. The educational and popular science seismograph according to claim 1, characterized in that: The auxiliary roller (10) is covered with a rubber layer, and the surface of the rubber layer is uniformly provided with V-shaped grooves (12).

3. The educational and popular science seismograph according to claim 1, characterized in that: The base plate (1) is also covered with an outer shell, which is made of plexiglass.

4. The educational and popular science seismograph according to claim 1, characterized in that: The controller is either an ESP32 or a Raspberry Pi microcontroller.

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