CN219122434U

CN219122434U - Falling ball method gravity acceleration testing device

Info

Publication number: CN219122434U
Application number: CN202222361325.5U
Authority: CN
Inventors: 卜峥林
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2023-06-02
Anticipated expiration: 2032-09-06

Abstract

The utility model relates to the field of gravitational acceleration testing, in particular to a falling ball method gravitational acceleration testing device, which comprises a transversely arranged bottom plate, wherein an installation plate is vertically arranged on the upper end surface of the bottom plate, an acrylic hollow pipe is vertically arranged above the bottom plate, the acrylic hollow pipe is fixedly connected with the outer side wall of the installation plate through a transversely arranged connecting rod, a first photoelectric door is fixedly arranged on the upper end surface of the acrylic hollow pipe, a second photoelectric door, a third photoelectric door and a fourth photoelectric door are sequentially and fixedly sleeved on the outer side wall of the acrylic hollow pipe from top to bottom.

Description

Falling ball method gravity acceleration testing device

Technical Field

The utility model relates to the field of gravitational acceleration testing, in particular to a falling ball gravitational acceleration testing device.

Background

Along with the development of electronic technology and internet, intelligent products are already in various lines, in the education and teaching fields, related equipment is also gradually intelligent, in a physical course outline, an experiment called a ball falling method for measuring gravity and speed is adopted, in an experiment for measuring gravity acceleration by a traditional ball falling method, a time point of a ball passing through a related mark in a free falling process is recorded by a shutter of a camera, then the gravity acceleration is solved according to the time stamps and the mark height and a formula between the free falling displacement and the time, and the traditional method has complicated experimental steps and larger error, so the intelligent ball falling method gravity acceleration testing device can be applied to middle school physical teaching and improves the efficiency and accuracy of the related experiment.

Disclosure of Invention

The utility model aims to solve the defects in the background technology and provides a falling ball gravity acceleration testing device.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the falling ball method gravity acceleration testing device comprises a transversely arranged bottom plate, a mounting plate is vertically arranged on the upper end face of the bottom plate, an acrylic hollow tube is vertically arranged above the bottom plate, the acrylic hollow tube is fixedly connected with the outer side wall of the mounting plate through a transversely arranged connecting rod, a first photoelectric door is fixedly arranged on the upper end face of the acrylic hollow tube, a second photoelectric door, a third photoelectric door and a fourth photoelectric door are sequentially and fixedly sleeved on the outer side wall of the acrylic hollow tube from top to bottom, an electric box fixedly arranged on the outer side wall of the mounting plate is arranged above the acrylic hollow tube, and a display screen is fixedly arranged on the outer side wall of the electric box.

Preferably, the first photoelectric gate, the second photoelectric gate, the third photoelectric gate and the fourth photoelectric gate are arranged at equal intervals.

Preferably, a power switch is arranged on the upper end face of the electric appliance box, and a switch is arranged on the outer side wall of the electric appliance box.

Preferably, the second photoelectric door, the third photoelectric door and the fourth photoelectric door are respectively and fixedly provided with an indicator lamp on the upper end surfaces.

Preferably, a receiving cylinder placed on the upper end face of the bottom plate is arranged below the acrylic hollow tube.

Compared with the prior art, the utility model has the following beneficial effects:

through setting up a transparent ya keli hollow tube, install four photoelectric gates on ya keli hollow tube, the equipment can record the time difference that the ball passed through each photoelectric gate when starting, according to these time differences and the difference in height of each known photoelectric gate alright calculate gravitational acceleration, calculate gravitational acceleration according to the time difference average value of the whereabouts of corresponding time difference of cubic experiment in the experimentation, gravitational acceleration value and the average value of every turn acceleration that the experiment measured at the same time can show on the display screen for gravitational acceleration calculates more accurately.

Drawings

FIG. 1 is a schematic diagram of a falling ball gravity acceleration testing device according to the present utility model.

1. A bottom plate; 2. a mounting plate; 3. acrylic hollow tube; 4. a connecting rod; 5. a first photogate; 6. a second photogate; 7. a third photogate; 8. a fourth photogate; 9. an electrical box; 10. a display screen; 11. a change-over switch; 12. an indicator light; 13. a receiving cylinder.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.

The falling ball method gravity acceleration testing device shown in fig. 1 comprises a transversely arranged bottom plate 1, a mounting plate 2 is vertically arranged on the upper end surface of the bottom plate 1, an acrylic hollow tube 3 is vertically arranged above the bottom plate 1, the acrylic hollow tube 3 is fixedly connected with the outer side wall of the mounting plate 2 through a transversely arranged connecting rod 4, a first photoelectric door 5 is fixedly arranged on the upper end surface of the acrylic hollow tube 3, a second photoelectric door 6, a third photoelectric door 7 and a fourth photoelectric door 8 are sequentially and fixedly sleeved on the outer side wall of the acrylic hollow tube 3 from top to bottom, the first photoelectric door 5, the second photoelectric door 6, the third photoelectric door 7 and the fourth photoelectric door 8 are arranged at equal intervals, an electric box 9 fixedly arranged on the outer side wall of the mounting plate 2 is arranged above the acrylic hollow tube 3, a display screen 10 is fixedly arranged on the outer side wall of the electric box 9, the photoelectric gate used in the design is a photoelectric device, and belongs to a photoresistor device, when the light intensity received by the sensor is different, the resistance value of the photoresistor inside the sensor is also different, the signal output by the output end of the sensor is also changed, the Arduino can judge that the photoelectric gate is shielded by an object by reading the data of the output end of the sensor, a receiving cylinder 13 arranged on the upper end face of a bottom plate 1 is arranged below an acrylic hollow tube 3, the receiving cylinder 13 is used for collecting falling pellets, the design can calculate the gravity acceleration of the falling pellets at different positions through the cooperation of a plurality of photoelectric gates, and the result is displayed on a display screen 10, the calculated result of a plurality of times is averaged, and the calculating error of the gravity acceleration is smaller, so that the result is more accurate.

In the second embodiment, as shown in fig. 1, a power switch is disposed on the upper end surface of the electrical box 9, a change-over switch 11 is disposed on the outer side wall of the electrical box 9, the change-over switch 11 is used for switching on different indicator lamps 12 and photo-gates to prompt that the corresponding photo-gates are working, the indicator lamps 12 are respectively and fixedly installed on the upper end surfaces of the second photo-gate 6, the third photo-gate 7 and the fourth photo-gate 8, the indicator lamps are LED lamps used for prompting the user about the current measurement time, the LED lamps are light emitting devices, also called light emitting diodes, which are essentially diodes, when the light emitting diodes are forward conducted, the light emitting diodes can emit light with specific colors, and have the characteristics of low power consumption, high brightness and the like.

The starting device, the first photoelectric door 5 opens, opens the second photoelectric door 6 through the change-over switch 11, put into the pellet from inferior gram force hollow tube 3 upper end, the pellet free fall motion falls into the cell-phone and leads to 13, the first photoelectric door 5 cooperates with the second photoelectric door 6 and measures and calculates the gravitational acceleration, will result to show on the display screen 10, then switch to the third photoelectric door 7 through the change-over switch 11, repeat the above-mentioned step and obtain second group gravitational acceleration data, switch to the fourth photoelectric door 8 and carry out the experiment, obtain third group data, the data of three groups is averaged, the mean value is also shown on the display screen 10 at the same time, accomplish the measurement and calculation.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. Falling ball method gravity acceleration testing arrangement, including bottom plate (1) of horizontal setting, its characterized in that: the utility model discloses a light source, including bottom plate (1), mounting panel (2), bottom plate (1) up end is vertical to be provided with mounting panel (2), bottom plate (1) top is vertical to be provided with ya keli hollow tube (3), ya keli hollow tube (3) are through connecting rod (4) and mounting panel (2) lateral wall fixed connection that transversely set up, ya keli hollow tube (3) up end fixed mounting has first photoelectric gate (5), second photoelectric gate (6), third photoelectric gate (7) and fourth photoelectric gate (8) have been fixedly cup jointed in proper order to ya keli hollow tube (3) lateral wall from top to bottom, ya keli hollow tube (3) top is provided with electric apparatus box (9) of fixed mounting at mounting panel (2) lateral wall, electric apparatus box (9) lateral wall fixed mounting has display screen (10).

2. The falling ball gravity acceleration testing device according to claim 1, wherein: the first photoelectric gate (5), the second photoelectric gate (6), the third photoelectric gate (7) and the fourth photoelectric gate (8) are arranged at equal intervals.

3. The falling ball gravity acceleration testing device according to claim 1, wherein: the power supply switch is arranged on the upper end face of the electrical box (9), and the switch (11) is arranged on the outer side wall of the electrical box (9).

4. The falling ball gravity acceleration testing device according to claim 1, wherein: and indicator lamps (12) are respectively and fixedly arranged on the upper end surfaces of the second photoelectric door (6), the third photoelectric door (7) and the fourth photoelectric door (8).

5. The falling ball gravity acceleration testing device according to claim 1, wherein: a receiving cylinder (13) arranged on the upper end face of the bottom plate (1) is arranged below the acrylic hollow tube (3).