Newton second law intelligent tester

Abstract

The utility model discloses an intelligent tester for Newton's second law, which relates to the technical field of teaching aids and comprises a track for testing, a magnet trolley is mounted above the track, and one end of the track is electrically connected with an operating device; a pulley is movably mounted at one end of the track, and six groups of magnetic sensors are uniformly mounted in the center of the track; a hook code disc is arranged at the top end of the magnet trolley, one end of the magnet trolley is fixedly connected with a coil, a pulley connected with the track is movably installed at the bottom end of the magnet trolley, and a magnet is fixedly installed at the position, corresponding to the magnetic sensor, of the center position of the bottom end of the magnet trolley. According to the utility model, the digitalization of the physics teaching aid can be enhanced, the purposes of maximum environmental protection, energy conservation and high efficiency can be achieved in the use process, and the convenience of data acquisition and the accuracy of experimental data are further improved.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of teaching tools, in particular to an intelligent tester for Newton's second law. Background Art

[0002] With the development of economy and the progress of society, people have higher and higher requirements for the digitalization and intelligence of education. Intelligent and environmentally friendly teaching aids are becoming more and more popular. Newton's second law experiment instrument is also gradually developing in the direction of energy saving and environmental protection. However, the Newton's second law experiment instrument currently sold on the market can only use a dot timer or an electric spark timer, and cooperate with a paper tape trolley to complete the experiment, which wastes a lot of paper tape. At the same time, the dot timer or electric spark timer generates noise, which causes noise damage to students.

[0003] In view of this, an object of the embodiments of the present utility model is to provide a Newton's second law intelligent tester to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a Newton's second law intelligent tester to solve the problems raised in the background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A Newton's second law intelligent tester comprises a track for testing, a magnetic trolley is installed above the track, and an operating device is electrically connected to one end of the track;

[0007] A pulley is movably installed at one end of the track, and six groups of magnetic sensors are evenly installed at the center of the track;

[0008] A hook code disk is arranged at the top of the magnetic trolley, and a coil is fixedly connected to one end of the magnetic trolley, a pulley connected to the track is movably installed at the bottom of the magnetic trolley, and a magnet is fixedly installed at the center position of the bottom end of the magnetic trolley corresponding to the position of the magnetic sensor.

[0009] As a further technical solution of the present invention, brackets are fixedly installed at both sides of one end of the track away from the pulley, and adjustable feet are connected through the inside of the brackets.

[0010] As a further technical solution of the utility model, an OLED display screen is installed on the outside of the operating device, and two groups of indicator lights are installed below one side of the OLED display screen, a power switch is installed below the other side of the OLED display screen, and function buttons and display buttons are respectively installed below the OLED display screen. The magnet trolley is connected to a connecting wire through a coil, and the connecting wire is connected to a hook code at the vertical downward position around the pulley.

[0011] As a further technical solution of the present invention, a single-chip microcomputer is arranged inside the operating device, and the single-chip microcomputer is electrically connected to the OLED display screen.

[0012] As a further technical solution of the present invention, a GT20L16S1Y font chip is installed inside the OLED display screen, and an SSD1306 driver chip is installed on the back of the OLED display screen.

[0013] As a further technical solution of the utility model, a Bluetooth module is installed inside the operating device. The Bluetooth module adopts a master-slave integrated Bluetooth serial port module HC-06. The Bluetooth module is electrically connected to the single-chip microcomputer.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model can enhance the digitization of physical teaching aids, and at the same time, can achieve the maximum degree of environmental protection during use, achieve the purpose of energy saving and high efficiency, and further improve the convenience of data collection and the accuracy of experimental data. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a three-dimensional structural schematic diagram of a Newton's second law intelligent tester.

[0017] Figure 2 The utility model is a schematic diagram of a track in a Newton's second law intelligent tester.

[0018] Figure 3 The utility model is a schematic diagram of a magnet car in a Newton's second law intelligent tester.

[0019] Figure 4 This utility model is a Newton's second law intelligent test instrument Figure 3 Bottom view of .

[0020] Figure 5 The utility model discloses a circuit principle diagram of a Newton's second law intelligent tester.

[0021] Figure 6 It is a comparison chart of experimental results of a Newton's second law intelligent testing instrument of the utility model.

[0022] Figure 7 The utility model discloses a single chip microprocessor function diagram in a Newton's second law intelligent tester.

[0023] Figure 8 The utility model discloses a single chip microcomputer and data transmission link diagram in a Newton's second law intelligent test instrument.

[0024] In the figure: 1. track; 10. pulley; 11. magnetic sensor; 12. bracket; 13. adjustment foot; 2. magnetic trolley; 20. hook code disk; 21. coil; 22. pulley; 23. magnet; 3. operating device; 30. OLED display; 31. indicator light; 32. power switch; 33. function button; 34. display button; 4. hook code. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-8 In an embodiment of the utility model, a Newton's second law intelligent tester includes a track 1 for testing, a magnetic trolley 2 is installed above the track 1, and one end of the track 1 is electrically connected to an operating device 3;

[0027] A pulley 10 is movably mounted at one end of the track 1, and six groups of magnetic sensors 11 are evenly mounted at the center of the track 1;

[0028] A hook code disk 20 is provided at the top of the magnetic trolley 2, and a coil 21 is fixedly connected to one end of the magnetic trolley 2. A pulley 22 connected to the track 1 is movably installed at the bottom of the magnetic trolley 2, and a magnet 23 is fixedly installed at the center position of the bottom end of the magnetic trolley 2 corresponding to the position of the magnetic sensor 11.

[0029] In this embodiment, brackets 12 are fixedly installed at both sides of one end of the track 1 away from the pulley 10 , and an adjusting foot 13 is connected through the inside of the bracket 12 .

[0030] In this embodiment, an OLED display screen 30 is installed on the outside of the operating device 3, and two groups of indicator lights 31 are installed below one side of the OLED display screen 30, a power switch 32 is installed below the other side of the OLED display screen 30, and function buttons 33 and display buttons 34 are respectively installed below the OLED display screen 30. The magnetic trolley 2 is connected to a connecting wire through the coil 21, and the connecting wire is connected to a hook code 4 at a vertically downward position around the pulley 22.

[0031] In this embodiment, a single chip microcomputer is disposed inside the operating device 3 , and the single chip microcomputer is electrically connected to the OLED display screen 30 .

[0032] In this embodiment, a GT20L16S1Y font chip is installed inside the OLED display screen 30 , and an SSD1306 driver chip is installed on the back of the OLED display screen 30 .

[0033] In this embodiment, a Bluetooth module is installed inside the operating device 3. The Bluetooth module adopts a master-slave integrated Bluetooth serial port module HC-06. The Bluetooth module is electrically connected to the single-chip microcomputer.

[0034] The working principle of the utility model is: when in use, six magnetic sensors 11 are installed in parallel and equidistantly at the center of the track 1, located at the bottom of the magnetic trolley 2, and the distance from the magnet 23 at the bottom of the magnetic trolley 2 is shortened as much as possible during the installation process, and the magnetic sensor 11 is connected to the port of the single-chip microcomputer through a data line, and the single-chip microcomputer can read the time data;

[0035] When the magnet car 2 passes the magnetic sensor 11, the single chip microcomputer can read the time Δt1, Δt2, Δt3, Δt4, Δt5, Δt6 that the magnet 23 passes each magnetic sensor 11. The length of the magnet 23 is d, and the instantaneous speed passing each magnetic sensor 11 is calculated respectively, thereby obtaining the acceleration of the magnet car 2.

[0036] By changing the time measurement scheme through the function button 33, measuring the time T1, T2, T3, T4, T5 between two adjacent magnetic sensors 11, the acceleration of the magnetic car 2 can also be obtained;

[0037] When the function button 33 is operated, press the function button 33 once, the red LED light is on, indicating that the time between two adjacent magnetic sensors 11 is measured; press the function button 33 again, the green LED light is on, indicating that the time of each magnetic sensor 11 is measured, and each time the function button 33 is pressed, the two functions change cyclically.

[0038] The measured data is stored in the memory of the single chip computer. By pressing the display button 23, the OLED display screen 30 displays the measured data. While displaying the data, it can be transmitted to a mobile phone or PC terminal via Bluetooth, which is convenient for data collection.

[0039] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A Newton's second law intelligent tester, characterized in that: It comprises a track (1) for testing, a magnetic trolley (2) is installed above the track (1), and one end of the track (1) is electrically connected to an operating device (3); A pulley (10) is movably mounted at one end of the track (1), and six groups of magnetic sensors (11) are evenly mounted at the center of the track (1); A hook code disk (20) is provided at the top of the magnetic trolley (2), and a coil (21) is fixedly connected to one end of the magnetic trolley (2), a pulley (22) connected to the track (1) is movably mounted at the bottom of the magnetic trolley (2), and a magnet (23) is fixedly mounted at the center of the bottom of the magnetic trolley (2) at a position corresponding to the magnetic sensor (11).

2. The Newton's second law intelligent tester according to claim 1, characterized in that: Brackets (12) are fixedly installed at positions on both sides of one end of the track (1) away from the pulley (10), and an adjusting support foot (13) is connected through the inside of the bracket (12).

3. The Newton's second law intelligent tester according to claim 1, characterized in that: An OLED display screen (30) is installed on the outside of the operating device (3), and two groups of indicator lights (31) are installed below one side of the OLED display screen (30), a power switch (32) is installed below the other side of the OLED display screen (30), and function buttons (33) and display buttons (34) are installed below the OLED display screen (30). The magnetic trolley (2) is connected to a connecting wire through a coil (21), and the connecting wire is connected to a hook (4) at a position vertically downward around the pulley (22).

4. The Newton's second law intelligent tester according to claim 1, characterized in that: A single-chip microcomputer is arranged inside the operating device (3), and the single-chip microcomputer is electrically connected to the OLED display screen (30).

5. The Newton's second law intelligent tester according to claim 3, characterized in that: A GT20L16S1Y font chip is installed inside the OLED display screen (30), and an SSD1306 driver chip is installed on the back of the OLED display screen (30).

6. The Newton's second law intelligent tester according to claim 1, characterized in that: A Bluetooth module is installed inside the operating device (3), and the Bluetooth module adopts a master-slave integrated Bluetooth serial port module HC-06, and the Bluetooth module is electrically connected to the single-chip microcomputer.

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