Random probability demonstration device for mathematical probability teaching

Abstract

The utility model relates to the technical field of probability demonstration devices, in particular to a random probability demonstration device for mathematical probability teaching, which comprises a bottom plate, a motor is fixedly connected onto the bottom plate, a color disc is assembled on an output shaft of the motor through a placement component, and a power supply and a control module are further fixedly connected onto the bottom plate. The power source and the control module are arranged on one side of the motor, the power source controls the motor to rotate through the control module, the motor rotates to drive the color disc to rotate, the color disc is assembled through a mounting part and a placing component, a support is further fixedly connected to the bottom plate, and the support is arranged on the other side of the motor. A color sensor and a distance sensor are fixedly connected to the support, and the distance sensor is arranged on the inner side of the color sensor. According to the utility model, the color discs are fixed on the placing member through the mounting members, and different color discs can be detached and replaced by using the mounting members, so that different numbers of color probability events can be demonstrated.

Description

Technical Field

[0001] The utility model relates to the technical field of probability demonstration devices, in particular to a random probability demonstration device for mathematical probability teaching. Background Art

[0002] Probability is a branch of mathematics that studies the quantitative patterns of random phenomena. Random phenomena refer to situations where, given constant basic conditions, the outcome of each experiment or observation is uncertain, resulting in a sense of chance. The realization and observation of random phenomena are called random experiments.

[0003] When teaching probability in math classes, teachers may use randomized experiments to enhance class interest and deepen students' understanding. Typical randomized experiments include dice rolling, coin tossing, card drawing, and roulette. In daily practice, demonstrating probability events using a turntable is often difficult due to the fixed color zones on the turntable surface. This requires changing the turntable to adjust the number of zones, which can be inconvenient.

[0004] Therefore, in order to solve the above technical problems, it is necessary for this application to propose a random probability demonstration device for mathematical probability teaching. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a random probability demonstration device for mathematical probability teaching.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a random probability demonstration device for mathematical probability teaching, comprising a base plate, a motor is fixedly connected to the base plate, the output shaft of the motor is assembled with a color disk through a placement component, a power supply and a control module are also fixedly connected to the base plate, the power supply and control module are arranged on one side of the motor, the power supply controls the rotation of the motor through the control module, the rotation of the motor drives the color disk to rotate, the color disk is assembled through a mounting part and a placement component, a bracket is also fixedly connected to the base plate, the bracket is arranged on the other side of the motor, a color sensor and a distance sensor are respectively fixedly connected to the bracket, and the distance sensor is arranged on the inner side of the color sensor.

[0007] Preferably, a display screen is provided on one side of the base plate.

[0008] The effect achieved by the above components is: the control module controls the connection between the motor and the power supply (wherein the control module is a conventional motor control module), thereby causing the motor to drive the color disk to rotate at high speed, and the control module is used to control the motor to stop. Since the positioning ring is evenly provided with through holes, when the positioning ring rotates, the distance sensor causes the monitored position information to continuously change in a pulsed form. When the distance sensor detects that the position data remains unchanged, the color sensor takes the color on the color disk directly below, and the color sensor transmits the collected color signal to the central processing unit. The central processing unit counts the color signal through the counting module and then displays it on the surface of the display screen. By repeating the above steps, the different colors on the color disk can be summarized and recorded on the surface of the display screen, so that the probability can be demonstrated. The color disk is fixed on the placement component through the mounting part, and different color disks can be disassembled and replaced using the mounting part to demonstrate different numbers of color probability events.

[0009] Preferably, the mounting member includes a rotating shaft, the lower end of the rotating shaft is fixedly connected to the motor output shaft through a coupling, the placing component includes a placing plate that can slide with the rotating shaft in the vertical direction, a color plate is provided at the upper end of the placing plate, and the placing component also includes a ring, which is provided above the color plate, and the ring presses the color plate onto the placing plate, and the outer ring of the placing plate is fixedly connected to a positioning ring.

[0010] The effect achieved by the above components is: the color disc is placed on the placement plate, the collar can be fixed on the surface of the rotating shaft, and then the collar is used to press the color disc downward to fix the color disc.

[0011] Preferably, a base plate is fixedly connected to the rotating shaft, and a first spring is provided between the placement plate and the base plate.

[0012] Preferably, a first sliding groove is provided on the surface of the rotating shaft, wherein a slider is slidably connected to the interior of the first sliding groove, and the slider is fixed to the placement plate.

[0013] The effect achieved by the above components is that the placement plate slides in the first sliding groove with the help of the slider, the placement plate presses the first spring downward, and then the upward elastic force of the first spring presses the color plate to the ring position for fixation.

[0014] Preferably, a mounting groove is provided on the side of the rotating shaft, and an adjustment plate is slidably connected to the inside of the mounting groove, wherein the adjustment plate can slide horizontally in the second sliding groove on the side wall of the mounting groove, a second spring is fixedly connected between the adjustment plate and the mounting groove, and a pin is fixedly connected to the surface of the adjustment plate.

[0015] Preferably, the inner cavity of the collar is provided with rubber, and the pin can be fixedly connected to the rubber in the inner cavity of the collar.

[0016] Preferably, a slanted plate is fixedly connected to the side surface of the adjustment plate, and the slanted plate is squeezed when the placement tray slides downward, causing the adjustment plate to squeeze the second spring.

[0017] The effect achieved by the above components is: the placement plate is squeezed downward, the placement plate squeezes the inclined plate downward, the inclined plate squeezes the adjusting plate, the adjusting plate squeezes the second spring in the second slide groove to slide, thereby causing the pin to be retracted into the installation groove, the collar is pressed against the color disc to release the placement plate, and the elastic force of the second spring pushes the adjusting plate so that the pin is nailed into the collar to fix the collar and the color disc. When the color disc needs to be removed, only the placement plate needs to be pressed downward to release the collar to quickly remove the color disc.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] In the present invention, the color disc is fixed on the placement component by the mounting piece, and the mounting piece can be used to disassemble and replace different color discs to demonstrate different numbers of color probability events. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 For this utility model Figure 1 Cross-sectional view at AA;

[0022] Figure 3 For this utility model Figure 2 Enlarged view of point B.

[0023] Legend: 1. Baseboard; 2. Placement component; 201. Placement plate; 202. Positioning ring; 3. Color disk; 4. Motor; 5. Power supply; 6. Control module; 7. Bracket; 8. Distance sensor; 9. Color sensor; 10. Display screen; 11. Rotating shaft; 12. Baseboard; 13. First spring; 14. First slide groove; 15. Slider; 16. Ring; 17. Mounting groove; 18. Second slide groove; 19. Adjustment plate; 20. Pin; 21. Inclined plate; 22. Second spring. DETAILED DESCRIPTION

[0024] Example: Figure 1-3As shown, a random probability demonstration device for mathematical probability teaching includes a base plate 1, a motor 4 is fixedly connected to the base plate 1, and the output shaft of the motor 4 is assembled with a color disk 3 through a placement component 2. The base plate 1 is also fixedly connected with a power supply 5 and a control module 6, and the power supply 5 and the control module 6 are arranged on one side of the motor 4, wherein the power supply 5 controls the rotation of the motor 4 through the control module 6, and the rotation of the motor 4 drives the color disk 3 to rotate, and the color disk 3 is assembled through a mounting part and the placement component 2; the base plate 1 is also fixedly connected with a bracket 7, and the bracket 7 is respectively fixedly connected with a color sensor 9 and a distance sensor 8, and the distance sensor 8 is arranged on the inner side of the color sensor 9, and a display screen 10 is provided on one side of the base plate 1; the control module 6 controls the connection between the motor 4 and the power supply 5 (wherein the control module 6 is a conventional motor 4 control module 6), so that the motor 4 drives the color disk 3 to rotate at high speed, and the control module 6 is used to control the motor 4 to stop.

[0025] Among them, the mounting part includes a rotating shaft 11, the lower end of the rotating shaft 11 is fixedly connected to the output shaft of the motor 4 through a coupling, the placing component 2 includes a placing plate 201 that can slide with the rotating shaft 11 in the vertical direction, and a color plate 3 is arranged above the placing plate 201. The placing component 2 also includes a ring 16, and the ring 16 presses the color plate 3 onto the placing plate 201. The outer ring of the placing plate 201 is fixedly connected to a positioning ring 202.

[0026] In this embodiment, since the positioning ring 202 is evenly provided with through holes, when the positioning ring 202 rotates, the distance sensor 8 causes the monitored position information to continuously change in a pulsed state. When the distance sensor 8 detects that the position data remains unchanged, the color sensor 9 takes the color on the color disk 3 directly below. The color sensor 9 transmits the collected color signal to the central processing unit, and the central processing unit counts the color signal through the counting module and then displays it on the surface of the display screen 10. By repeating the above steps, the different colors on the color disk 3 can be summarized and recorded on the surface of the display screen 10, so that the probability can be demonstrated. The color disk 3 is fixed on the placement component 2 by the mounting part, and different color disks 3 can be disassembled and replaced using the mounting part to demonstrate different numbers of color probability events.

[0027] Among them, the color disc 3 is placed on the placement disc 201, the ring 16 can be fixed on the surface of the rotating shaft 11, and then the ring 16 is used to press the color disc 3 downward to fix the color disc 3. The rotating shaft 11 is fixedly connected to the base plate 12, and a first spring 13 is provided between the placement disc 201 and the base plate 12. The placement disc 201 slides in the first slide groove 14 with the help of the slider 15, and the placement disc 201 presses the first spring 13 downward, and then the upward elastic force of the first spring 13 squeezes the color disc 3 to the position of the ring 16 for fixation.

[0028] Among them, a first sliding groove 14 is opened on the surface of the rotating shaft 11, wherein the slider 15 is slidably connected inside the first sliding groove 14, and the slider 15 is fixed to the placement plate 201. A mounting groove 17 is opened on the side of the rotating shaft 11, and an adjustment plate 19 is slidably connected inside the mounting groove 17, wherein the adjustment plate 19 can slide horizontally in the second sliding groove 18 on the side wall of the mounting groove 17, and a second spring 22 is fixedly connected between the adjusting plate 19 and the mounting groove 17, and a pin 20 is fixedly connected to the surface of the adjusting plate 19; the inner cavity of the ring 16 is provided with rubber, and the pin 20 can be nailed on the rubber in the inner cavity of the ring 16, and the side of the adjusting plate 19 is fixedly connected with an inclined plate 21. When the placement plate 201 slides downward, the inclined plate 21 is squeezed to cause the adjusting plate 19 to squeeze the second spring 22.

[0029] When the placement tray 201 is pressed downward, the placement tray 201 presses the inclined plate 21 downward, and the inclined plate 21 presses the adjustment plate 19. The adjustment plate 19 slides in the second slide groove 18, pressing the second spring 22. This causes the pin 20 to be retracted into the mounting groove 17. The collar 16 is pressed against the color disk 3 to release the placement tray 201. The elastic force of the second spring 22 pushes the adjustment plate 19, causing the pin 20 to drive into the collar 16, securing the collar 16 and, in turn, the color disk 3. When the color disk 3 needs to be removed, the color disk 3 can be quickly removed by simply pressing the placement tray 201 downward to release the collar 16.

[0030] The working principle of the present invention is as follows: the control module 6 controls the connection between the motor 4 and the power supply 5 (wherein the control module 6 is a conventional motor 4 control module 6), thereby causing the motor 4 to drive the color disk 3 to rotate at high speed, and the control module 6 is used to control the motor 4 to stop. Since the positioning ring 202 is evenly provided with through holes, when the positioning ring 202 is rotating, the distance sensor 8 makes the monitored position information constantly change in a pulse shape. When the distance sensor 8 detects that the position data remains unchanged, the color sensor 9 takes the color on the color disk 3 directly below. The color sensor 9 transmits the collected color signal to the central processing unit. The central processing unit counts the color signal through the counting module and then displays it on the surface of the display screen 10. The above steps are repeated repeatedly, and the different colors on the color disk 3 can be summarized and recorded on the surface of the display screen 10, so that the probability can be demonstrated.

[0031] The color disc 3 is fixed to the placement component 2 by a mounting piece, and different color discs 3 can be disassembled and replaced by the mounting piece to demonstrate different numbers of color probability events. The color disc 3 is placed on the placement disc 201, and the collar 16 can be fixed on the surface of the rotating shaft 11. The collar 16 is then used to press the color disc 3 downward to fix the color disc 3. The placement disc 201 slides in the first slide groove 14 with the help of the slider 15. The placement disc 201 presses the spring downward, and then the upward elastic force of the spring squeezes the color disc 3 to the position of the collar 16 to fix it. When the placement tray 201 is squeezed downward, the placement tray 201 squeezes the inclined plate 21 downward, and the inclined plate 21 squeezes the adjusting plate 19. The adjusting plate 19 squeezes the second spring 22 in the second slide groove 18 to slide, thereby retracting the pin 20 into the mounting groove 17, and the collar 16 presses the color disk 3 to release the placement tray 201. The elastic force of the second spring 22 pushes the adjusting plate 19, so that the pin 20 is nailed into the collar 16 to fix the collar 16, and then fixes the color disk 3. When the color disk 3 needs to be removed, it is only necessary to press the placement tray 201 downward to loosen the collar 16 to quickly remove the color disk 3.

[0032] In summary, the present invention fixes the color disc on the placement component through the mounting member, and can use the mounting member to disassemble and replace different color discs to demonstrate different numbers of color probability events.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification of the above embodiment based on the technical essence of the present invention that does not deviate from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A random probability demonstration device for mathematical probability teaching, comprising a base plate (1), characterized in that: The base plate (1) is fixedly connected to a motor (4), an output shaft of the motor (4) is mounted with a color disk (3) via a placement component (2), and the base plate (1) is also fixedly connected to a power supply (5) and a control module (6), the power supply (5) and the control module (6) being arranged on one side of the motor (4); the power supply (5) controls the rotation of the motor (4) via the control module (6), the rotation of the motor (4) drives the color disk (3) to rotate, and the color disk (3) is assembled via a mounting member and a placement component (2). The base plate (1) is also fixedly connected to a bracket (7), the bracket (7) being arranged on the other side of the motor (4), the bracket (7) being respectively fixedly connected to a color sensor (9) and a distance sensor (8), and the distance sensor (8) being arranged on the inner side of the color sensor (9).

2. A random probability demonstration device for mathematical probability teaching according to claim 1, characterized in that: The mounting member includes a rotating shaft (11), the lower end of the rotating shaft (11) is fixedly connected to the output shaft of the motor (4) through a coupling, the placement component (2) includes a placement plate (201) that can slide with the rotating shaft (11) in a vertical direction, a color plate (3) is arranged above the placement plate (201), and the placement component (2) also includes a collar (16), the collar (16) is arranged above the color plate (3), the collar (16) presses the color plate (3) onto the placement plate (201), and the outer ring of the placement plate (201) is fixedly connected to a positioning ring (202).

3. A random probability demonstration device for mathematical probability teaching according to claim 2, characterized in that: A base plate (12) is fixedly connected to the rotating shaft (11), and a first spring (13) is provided between the placement plate (201) and the base plate (12).

4. A random probability demonstration device for mathematical probability teaching according to claim 3, characterized in that: A first sliding groove (14) is provided on the surface of the rotating shaft (11), and a slider (15) is slidably connected inside the first sliding groove (14), and the slider (15) is fixed to the placement plate (201).

5. A random probability demonstration device for mathematical probability teaching according to claim 4, characterized in that: A mounting groove (17) is provided on the side of the rotating shaft (11), and an adjusting plate (19) is slidably connected inside the mounting groove (17). The adjusting plate (19) can slide horizontally in a second sliding groove (18) on the side wall of the mounting groove (17). A second spring (22) is fixedly connected between the adjusting plate (19) and the mounting groove (17), and a pin (20) is fixedly connected to the surface of the adjusting plate (19).

6. A random probability demonstration device for mathematical probability teaching according to claim 5, characterized in that: The inner cavity of the collar (16) is provided with rubber, and the inserting pin (20) can be fixedly connected to the rubber in the inner cavity of the collar (16).

7. A random probability demonstration device for mathematical probability teaching according to claim 6, characterized in that: The side of the adjustment plate (19) is fixedly connected to an inclined plate (21), and when the placement plate (201) slides downward, the inclined plate (21) is squeezed to force the adjustment plate (19) to squeeze the second spring (22).

8. The random probability demonstration device for mathematical probability teaching according to claim 1, characterized in that: A display screen (10) is provided on one side of the bottom plate (1).

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