A physical experiment instrument capable of image acquisition

Abstract

The utility model provides a physical experiment instrument capable of performing image acquisition, comprising a base, an LED light source board is installed on the top of the base, and a calibration board bracket is installed on the top surface of the LED light source board near one end; the physical experiment instrument comprises an ultra-high-speed industrial camera, and the ultra-high-speed industrial camera is connected to a host computer network; the calibration board is installed on the calibration board bracket, and a circular mark is arranged on the calibration board; the ultra-high-speed industrial camera acquires an image of the circular mark, and sends the image to the host computer, and the host computer compares the size of the image with the actual size of the mark to determine the image scaling ratio; the host computer establishes an image coordinate system according to the scaling ratio; the upper left corner of the LED light source board corresponds to the coordinate origin of the image coordinate system; a horizontal projection experiment device, a free-fall ball channel bracket, a simple pendulum bracket, a damping experiment device and a Newton's second law experiment device are installed on the LED light source board; the ultra-high-speed industrial camera synchronously acquires image information.

Description

Technical Field

[0001] The utility model belongs to the technical field of physical experiment instruments, in particular to a physical experiment instrument capable of collecting images. Background Art

[0002] In the process of physics teaching, multiple physical experiments need to be carried out, such as damped motion experiment, free fall experiment, and horizontal projection experiment. During the experiment, the experimenter operates the experimental instrument and records the experimental information at the same time. In the process of physical experiments, the experimental instrument is in motion. The experimental information recorded by the experimenter through manual observation and recording is not completely synchronized between human eye observation and manual operation and the experimental instrument. The experimental information collected manually usually has errors and cannot obtain accurate experimental data. Utility Model Content

[0003] The utility model aims to provide a physical experiment instrument capable of collecting images, which can synchronously collect image information in the process of physical experiments to obtain accurate experimental data.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A physical experiment instrument capable of image acquisition comprises a base, an LED light source board is installed on the top of the base, and a calibration board bracket is installed on the top surface of the LED light source board near one end; the physical experiment instrument also comprises an ultra-high-speed industrial camera, and the ultra-high-speed industrial camera is connected to a host computer via a network;

[0006] Before the experiment, the calibration plate is mounted on the calibration plate bracket, and a circular mark is set on the calibration plate;

[0007] The ultra-high-speed industrial camera acquires an image of the circular mark on the calibration plate, and sends the image of the mark to a host computer, and the host computer compares the size of the image of the mark with the actual size of the circular mark on the calibration plate to determine the scaling ratio of the image acquired by the ultra-high-speed industrial camera; the host computer establishes an image coordinate system with the scaling ratio;

[0008] Wherein, the upper left corner of the LED light source board corresponds to the coordinate origin of the image coordinate system;

[0009] The horizontal throwing experimental device, the free falling ball channel bracket, the single pendulum bracket, the damping experimental device and the Newton's second law experimental device are respectively installed on the LED light source board;

[0010] During the experiment, the ultra-high-speed industrial camera synchronously collects image information of each experimental device and sends it to the host computer to obtain accurate experimental information.

[0011] Preferably, the horizontal throwing experimental device comprises a horizontal throwing angle adjustment bracket and a horizontal throwing bracket; the horizontal throwing angle adjustment bracket is fixed to the left side of the LED light source board near the top position; the horizontal throwing bracket is installed on the horizontal throwing angle adjustment bracket;

[0012] The ball in the horizontal throwing experiment rolls downward along the horizontal throwing bracket. After being thrown from the horizontal throwing bracket, the ball passes in front of the LED light source board. The ultra-high-speed industrial camera collects image information of the horizontal throwing motion of the ball.

[0013] Preferably, the free-fall ball channel bracket is installed at the top of the LED light source board; the ball falls downward from the lower end outlet of the free-fall ball channel bracket to perform free fall motion, and the ultra-high-speed industrial camera collects image information of the free fall motion of the ball.

[0014] Preferably, the pendulum bracket is installed on the top of the LED light source board; the pendulum ball is bound to the pendulum bracket, and when the pendulum ball performs a pendulum motion on the LED light source board, the ultra-high-speed industrial camera collects image information of the pendulum motion of the ball.

[0015] Preferably, the damping experimental device comprises a damping motion spring, the damping motion spring is bound to the top of the LED light source board, and a hook is hung on the lower end of the damping motion spring; when the hook pulls the damping motion spring to perform damping motion in front of the LED light source board, the ultra-high-speed industrial camera collects image information of the damping motion of the hook and damping motion spring.

[0016] Preferably, the Newton's second law experimental device comprises a fixed bracket, which is mounted at the bottom of the LED light source board, and a guide rail is arranged in front of the LED light source board in a horizontal direction through the fixed bracket; a trolley baffle is fixed on the top surface of one end of the guide rail and a pulley is fixed on the end surface; the track trolley can be slidably placed on the guide rail; one end of the pull wire is bound to the end of the track trolley, the pull wire is guided from the horizontal direction to the vertical direction by the pulley, and the weight is bound to the lower end of the vertical pull wire;

[0017] When the weight pulls the track trolley to move in front of the LED light source board, the ultra-high-speed industrial camera collects image information of the movement of the track trolley.

[0018] Preferably, the calibration plate is installed on the top of the rail trolley; during the experiment, the calibration plate moves with the rail trolley, and the ultra-high-speed industrial camera collects motion image information of the calibration plate.

[0019] The beneficial effects of the utility model are as follows:

[0020] Various physical experiment devices are integrated on the physical experiment instrument capable of image acquisition. When a physical experiment needs to be conducted, only the corresponding physical experiment device needs to be selected for conducting the experiment.

[0021] The physical experiment device is placed in front of the LED light source board for experiment. When the physical experiment device moves, the ultra-high-speed industrial camera synchronously collects images of the movement of the physical experiment device to obtain image information of the movement of the physical experiment device in real time and accurately, and sends the images of the movement of the physical experiment device to the host computer. In the present application, the ultra-high-speed industrial camera can accurately obtain experimental data by collecting images of the movement of the physical experiment device, avoiding errors caused by manual measurement of experimental data. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional diagram of the physical experiment instrument capable of image acquisition according to the utility model;

[0023] Figure 2 A view of the physical experiment instrument capable of image acquisition according to the utility model as viewed from the back;

[0024] Reference numerals:

[0025] 1. Base; 2. Guide rail fixing bracket; 3. Track; 4. Weights; 5. Pulley; 6. Trolley baffle; 7. Hook weight; 8. Damping motion spring; 9. LED light source board; 10. Calibration board bracket; 11. Single pendulum bracket; 12. Free fall ball channel bracket; 13. Horizontal throw bracket; 14. Horizontal throw angle adjustment bracket; 15. Calibration board; 16. Track trolley. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] During physical experiments, the experimental instruments are in motion, and the experimenters observe and record the experimental information manually. However, human visual observation and manual operation are not completely synchronized with the experimental instruments. Manually collected experimental information usually contains errors and accurate experimental information cannot be obtained.

[0028] For the above technical issues, refer to Figure 1 The present embodiment provides a physical experiment instrument capable of image acquisition, comprising a base 1, an LED light source board 9 is installed on the top of the base 1, and a calibration board bracket 10 is installed on the top surface of the LED light source board 9 near one end.

[0029] The physical experiment instrument capable of image acquisition further comprises an ultra-high-speed industrial camera, and the ultra-high-speed industrial camera is connected to the host computer via a network. The ultra-high-speed industrial camera is a prior art and will not be described in detail here.

[0030] Before the experiment, the calibration plate 15 is installed on the calibration plate bracket 10.

[0031] A circular mark is arranged on the calibration plate 15 .

[0032] The high-speed camera acquires an image of the circular mark on the calibration plate 15 and sends the image of the mark to a host computer, which compares the size of the image of the mark with the actual size of the circular mark on the calibration plate 15 to determine the scaling ratio of the image of the mark.

[0033] The scaling ratio is the scaling ratio of the image captured by the ultra-high-speed industrial camera.

[0034] The host computer establishes an image coordinate system according to the zoom ratio.

[0035] In this embodiment, the diameter of the circular mark on the calibration plate 15 is 20 mm.

[0036] Using a camera to calibrate the coordinate system is an existing technology and will not be introduced in detail here.

[0037] After the image coordinate system is established, the calibration plate 15 is removed.

[0038] Among them, the upper left corner of the LED light source board 9 corresponds to the coordinate origin of the image coordinate system.

[0039] The horizontal throwing experimental device, the free-falling ball channel bracket 12, the simple pendulum bracket 11, the damping experimental device and the Newton's second law experimental device are respectively installed on the LED light source board 9. According to the experimental needs, the corresponding experimental device can be selected.

[0040] During the experiment, the ultra-high-speed industrial camera synchronously collects image information of the experimental device, and the image information is transmitted to the host computer through the network, so that accurate experimental information can be obtained, thereby avoiding errors between manual operation and the experimental device during manual observation and information recording.

[0041] Reference Figure 2 The horizontal throwing experimental device includes a horizontal throwing angle adjustment bracket 14 and a horizontal throwing bracket 13. The horizontal throwing angle adjustment bracket 14 is fixed near the top position on the left side of the LED light source board 9, and the LED light source board 9 is matched with the coordinate system. The horizontal throwing angle adjustment bracket 14 corresponds to the origin of the coordinate system.

[0042] The horizontal projection bracket 13 is installed on the horizontal projection angle adjustment bracket 14 .

[0043] The ball in the horizontal throwing experiment rolls downward along the horizontal throwing bracket 13. After being thrown out from the horizontal throwing bracket 13, the ball passes in front of the LED light source board 9 to perform horizontal throwing motion.

[0044] Specifically, the horizontal projection bracket 13 includes an inclined portion, a horizontal portion is formed at the lower end of the inclined portion, and a sliding groove is provided in the inclined portion and the horizontal portion, and the ball rolls down from the inclined portion to the horizontal portion along the sliding groove, and then rolls along the horizontal portion. After the ball rolls out of the horizontal portion, the ball passes in front of the LED light source board 9 to perform horizontal projection motion.

[0045] The ultra-high-speed industrial camera collects image information of the horizontal projectile motion of the small ball to accurately obtain experimental information of the horizontal projectile motion of the small ball.

[0046] Reference Figure 1 The free-fall ball channel bracket 12 is installed at the top of the LED light source board 9. The ball enters the free-fall ball channel bracket 12 from the upper entrance and falls downward from the lower exit of the free-fall ball channel bracket 12. Then, the ball performs free fall motion in front of the LED light source board 9. At this time, the ultra-high-speed industrial camera collects image information of the free fall motion of the ball to accurately obtain experimental data of the free fall motion of the ball.

[0047] The pendulum bracket 11 is installed on the top of the LED light source board 9, and the pendulum ball is bound to the pendulum bracket 11. When performing a pendulum experiment, the pendulum ball performs a pendulum motion in front of the LED light source board 9, and at the same time, the ultra-high-speed industrial camera collects image information of the pendulum motion of the ball to accurately obtain experimental data of the pendulum motion of the ball.

[0048] The damping experimental device comprises a damping motion spring 8, wherein the damping motion spring 8 is bound to the top of the LED light source board 9, and a hook 7 is hung on the lower end of the damping motion spring 8.

[0049] The hook weight 7 pulls the damping motion spring 8 to extend or shorten, and the hook weight 7 performs damping motion in front of the LED light source board 9. At the same time, the ultra-high-speed industrial camera collects image information of the damping motion of the hook weight 7 and the damping motion spring 8 to accurately obtain experimental data of the damping motion.

[0050] Reference Figure 1The Newton's second law experimental device includes a fixed bracket 2, which is installed at the bottom of the LED light source board 9, and a guide rail 3 is fixed on the fixed bracket 2. The guide rail 3 is arranged in front of the LED light source board 9 along the horizontal direction through the fixed bracket 2.

[0051] A trolley baffle 6 is fixed on the top surface of one end of the guide rail 3, and a pulley 5 is fixed on the end surface of the same end of the guide rail 3. The track trolley 16 can be slidably placed on the guide rail 3.

[0052] One end of the pull wire is bound to the end of the rail trolley 16, the pull wire extends along the guide rail 3 to the pulley 5, the pull wire passes over the top of the pulley 5, the pull wire is guided from the horizontal direction to the vertical direction by the pulley 5, and the weight 4 is bound to the lower end of the vertical pull wire.

[0053] When the weight 4 pulls the track trolley 16 through the pull wire, the track trolley 16 moves in front of the LED light source board 9. At the same time, the ultra-high-speed industrial camera collects image information of the movement of the track trolley 16 to accurately collect experimental information during the Newton's second law experiment. Specifically, the image information of the movement of the track trolley 16 can be collected in real time and accurately.

[0054] Reference Figure 1 , the calibration plate 15 is installed on the top of the track trolley 16. During the experiment,

[0055] The calibration plate 15 is installed on the top of the track trolley 16. When the track trolley 16 moves along the track 3, the calibration plate 15 moves with the track trolley 16. The ultra-high-speed industrial camera collects the motion image information of the calibration plate 15 in real time to accurately collect the experimental data during the Newton's second law experiment.

[0056] Working principle:

[0057] Various physical experiment devices are integrated on the physical experiment instrument capable of image acquisition. When a physical experiment needs to be conducted, only the corresponding physical experiment device needs to be selected for conducting the experiment.

[0058] The physical experiment device is moved in front of the LED light source board. While the physical experiment device is moving, the ultra-high-speed industrial camera synchronously collects images of the movement of the physical experiment device to obtain information about the movement of the physical experiment device in real time and accurately, and sends the images of the movement of the physical experiment device to the host computer. In the present application, the ultra-high-speed industrial camera can accurately obtain experimental data by collecting images of the movement of the physical experiment device, avoiding errors caused by manual measurement of experimental data.

[0059] Although the 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 variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A physical experiment instrument capable of image acquisition, comprising a base (1), characterized in that , an LED light source board (9) is installed on the top of the base (1), and a calibration board bracket (10) is installed on the top surface of the LED light source board (9) near one end; the physical experiment instrument also includes an ultra-high-speed industrial camera, and the ultra-high-speed industrial camera and the host computer are connected via a network; the calibration board (15) is installed on the calibration board bracket (10), and a circular mark is provided on the calibration board (15); The ultra-high-speed industrial camera acquires an image of the circular mark on the calibration plate (15), and sends the image of the mark to a host computer; the host computer compares the size of the image of the mark with the actual size of the circular mark on the calibration plate (15) to determine the scaling ratio of the image acquired by the ultra-high-speed industrial camera; the host computer establishes an image coordinate system according to the scaling ratio; The horizontal throwing experimental device, the free-falling ball channel bracket (12), the simple pendulum bracket (11), the damping experimental device and the Newton's second law experimental device are respectively installed on the LED light source board (9); During the experiment, the ultra-high-speed industrial camera synchronously collects image information of each experimental device and sends it to the host computer to obtain accurate experimental information.

2. According to claim 1, the physical experiment instrument capable of image acquisition is characterized in that The horizontal throwing experimental device comprises a horizontal throwing angle adjustment bracket (14) and a horizontal throwing bracket (13); the horizontal throwing angle adjustment bracket (14) is fixed to a position close to the top of the left side of the LED light source board (9); the horizontal throwing bracket (13) is mounted on the horizontal throwing angle adjustment bracket (14); The ball in the horizontal throwing experiment rolls downward along the horizontal throwing bracket (13); after being thrown from the horizontal throwing bracket (13), the ball passes in front of the LED light source board (9); and the ultra-high-speed industrial camera collects image information of the horizontal throwing motion of the ball.

3. According to claim 1, the physical experiment instrument capable of image acquisition is characterized in that The free-falling ball channel bracket (12) is mounted on the top of the LED light source board (9); the ball falls downward from the lower end outlet of the free-falling ball channel bracket (12) to perform free-falling motion, and the ultra-high-speed industrial camera collects image information of the free-falling motion of the ball.

4. The physical experiment instrument capable of image acquisition according to claim 1 is characterized in that The simple pendulum bracket (11) is mounted on the top of the LED light source board (9); a simple pendulum ball is bound to the simple pendulum bracket (11), and the simple pendulum ball performs a simple pendulum motion in front of the LED light source board (9), while the ultra-high-speed industrial camera collects image information of the simple pendulum motion of the ball.

5. According to claim 1, the physical experiment instrument capable of image acquisition is characterized in that The damping experimental device comprises a damping motion spring (8), the damping motion spring (8) is bound to the top of the LED light source board (9), and a hook (7) is hung on the lower end of the damping motion spring (8); the hook (7) pulls the damping motion spring (8) to perform damping motion in front of the LED light source board (9), and at the same time, the ultra-high-speed industrial camera collects image information of the damping motion of the hook (7) and the damping motion spring (8).

6. The physical experiment instrument capable of image acquisition according to claim 1 is characterized in that The Newton's second law experimental device comprises a fixed bracket (2), the fixed bracket (2) is installed at the bottom of the LED light source board (9), and the guide rail (3) is arranged in the front of the LED light source board (9) along the horizontal direction through the fixed bracket (2); a trolley baffle (6) is fixed on the top surface of one end of the guide rail (3) and a pulley (5) is fixed on the end surface; a track trolley (16) can be slidably placed on the guide rail (3); one end of the pull wire is bound to the end of the track trolley (16), and the pull wire is guided from the horizontal direction to the vertical direction through the pulley (5), and the weight (4) is bound to the lower end of the vertical pull wire; When the weight (4) pulls the track trolley (16) to move in front of the LED light source panel (9), the ultra-high-speed industrial camera collects image information of the movement of the track trolley (16).

7. The physical experiment instrument capable of image acquisition according to claim 6 is characterized in that The calibration plate (15) is mounted on the top of the track trolley (16); during the experiment, the calibration plate (15) moves along with the track trolley (16), and the ultra-high-speed industrial camera collects motion image information of the calibration plate (15).

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