CN116173483A - Device, method, electronic equipment and medium for measuring the falling point and speed of table tennis balls - Google Patents

Abstract

The embodiment of the invention discloses a device, a method, electronic equipment and a medium for measuring the falling point and the speed of a table tennis, wherein the device for measuring the falling point and the speed of the table tennis comprises the following components: the device comprises a first panel, a second panel, a supporting plate, a base, a counter and a server; a spring is arranged between the first panel and the second panel, one end of the second panel is connected with the base through a fastenable rotating shaft, the other end of the second panel is connected with the supporting plate through a fastenable rotating shaft, the base is provided with a clamping groove, and the supporting plate is clamped with the base through the clamping groove; the second panel sets up the identification needle, and first panel backplate sets up the contact with the corresponding position of identification needle, and when the table tennis hit first panel, and when the flight speed of table tennis exceeded the speed threshold value, first panel extrusion spring made contact and identification needle contact, and the counter is used for gathering the target hit number of times data of table tennis to with target hit number of times data upload to the server. The device for measuring the falling point and the speed of the table tennis solves the problems that in the prior art, the cost for measuring the falling point and the speed of the table tennis is high or the measurement result is inaccurate.

Description

Device, method, electronic equipment and medium for measuring the falling point and speed of table tennis balls

technical field

The invention relates to the technical field of measuring the drop point and speed of a table tennis ball, in particular to a device, method, electronic equipment and medium for measuring the drop point and speed of a table tennis ball.

Background technique

Table tennis is called China's "national ball" and is a popular ball sport in the world. Landing point and speed are two of the five major elements of table tennis hitting quality. The speed of the ball returned by the athlete and the accuracy of the landing point reflect the level of the athlete's technical ability.

Studies of human motor skills have found a trade-off between speed and accuracy of movement. In table tennis, athletes can properly reduce the hitting speed to improve the accuracy of the landing point or increase the hitting speed while ignoring the accuracy of the hitting point. Therefore, simply observing the speed of the ball or the accuracy of the landing point cannot fully describe the level of table tennis skill. It is extremely important to measure the batting ability of table tennis practitioners and carry out targeted exercises, whether it is table tennis teaching in primary and secondary schools or professional training for athletes.

Mainly contain two kinds of technologies in the technology of measuring table tennis drop point and speed at present, eagle eye technology and pressure (or sound) sensing technology. Hawkeye technology is composed of 2 or more high-speed cameras and high-performance computers. The high-speed cameras are used to simultaneously capture the basic data of the ball's flight trajectory from different angles. Through computer image recognition and calculation, these data are generated into a three-dimensional table tennis ball. Sports routes and landing points, due to the high price and large number of these hardware devices, the cost is relatively high. Moreover, the installed camera must not be blocked by the athlete's body when capturing the basic data of the ball's flight trajectory, resulting in complicated construction. Therefore, the eagle eye Technology has not yet been applied to daily table tennis training.

The pressure (or sound) sensing technology is to measure the drop point of the table tennis ball by installing a pressure (or sound) sensor under the surface of the table tennis table. Limited by the accuracy of the sensor, only rough information about the drop point of the table tennis ball can be obtained through measurement, which is difficult to obtain. Obtain the velocity information of the ball, and, because the structure of the standard table tennis table is changed by installing the pressure sensor under the table tennis table top, it does not meet the rules of use of the table tennis table in the official game.

Contents of the invention

The purpose of the embodiments of the present invention is to provide a device, method, electronic equipment and medium for measuring the drop point and speed of a table tennis ball, so as to solve the problem of high cost or inconsistent measurement results in the prior art of simultaneously measuring the drop point and speed of a table tennis ball. exact question.

To achieve the above object, an embodiment of the present invention provides a table tennis target indicating device, comprising: a first panel, a second panel, a support plate, a base, a counter and a server;

A spring is arranged between the first panel and the second panel, one end of the second panel is connected to the base through a fastenable rotating shaft, and the other end is connected to the support plate through a fastenable rotating shaft. Then, the base is provided with a card slot, and the support plate and the base are locked through the card slot;

The second panel is provided with an identification pin, and the first panel is provided with a contact at a position corresponding to the identification pin. When the ping-pong ball hits the first panel and the flight speed of the ping-pong ball exceeds the speed threshold, the The first panel squeezes the spring so that the contact is in contact with the identification pin, and the counter is used to collect the data of the number of target hits of the table tennis ball, and upload the data of the number of target hits to the server .

On the basis of above-mentioned technical scheme, the present invention can also be improved as follows:

Further, the second panel is also provided with an adjustable knob, the adjustable knob has a thread structure and is connected with the identification pin, and is used to adjust the length of the identification pin, adjust the distance between the tip of the identification pin and the contact, and change the speed threshold.

Further, the first panel is a detachable and replaceable flat panel, and the replaceable flat panels have different sizes.

A method for measuring a table tennis drop point and speed, said method specifically comprising:

The counter is used to collect data on the number of table tennis target hits and the number of times the speed exceeds the speed threshold, and upload the data on the number of times the target is hit to the server.

Further, the method for measuring table tennis drop point and speed also includes:

When multiple devices for measuring the drop point and speed of the table tennis ball are placed on the table, the server can simultaneously receive the data of the number of times the target is hit by different devices for measuring the drop point and speed of the table tennis ball, and perform data statistics respectively.

An electronic device includes a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the computer program, the steps of the method are implemented.

A non-transitory computer-readable medium on which is stored a computer program that implements the steps of the method when executed by a processor.

Embodiments of the present invention have the following advantages:

In the device for measuring the falling point and speed of the table tennis ball in the present invention, an identification pin is set on the second panel, and a contact is set on the first panel at a position corresponding to the identification pin. When the table tennis ball touches the first panel, the The contact is in contact with the identification pin, and the counter is used to collect data on the number of target hits of the table tennis ball, and upload the data on the number of times the target is hit to the server.

The measurement of the drop point and speed of the table tennis ball is realized, and the problem of high cost or inaccurate measurement results of simultaneously measuring the drop point and speed of the table tennis ball in the prior art is solved.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that are required in the description of the embodiments or the prior art. Apparently, the drawings in the following description are only exemplary, and those skilled in the art can also obtain other implementation drawings according to the provided drawings without creative work.

The structures, proportions, sizes, etc. shown in this manual are only used to cooperate with the content disclosed in the manual, so that people familiar with this technology can understand and read, and are not used to limit the conditions for the implementation of the present invention, so there is no technical In the substantive meaning above, any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the functions and objectives of the present invention. within the range that can be covered.

Fig. 1 is the schematic diagram of the device measuring table tennis drop point and speed of the present invention;

Fig. 2 is the schematic diagram of the device for measuring table tennis drop point and speed of the present invention;

Fig. 3 is the flow chart of the method for measuring table tennis drop point and speed of the present invention;

FIG. 4 is a schematic diagram of the physical structure of the electronic device provided by the present invention;

Fig. 5 is the schematic diagram of the device for measuring table tennis drop point and speed of the present invention;

Fig. 6 is the schematic diagram of the device for measuring table tennis drop point and speed of the present invention;

Fig. 7 is a schematic diagram of the device for measuring the falling point and speed of a table tennis ball according to the present invention.

Wherein reference sign is:

First panel 10 , second panel 20 , support plate 30 , base 40 , identification pin 50 , adjustable knob 60 , counter 70 , server 80 , electronic device 90 , processor 901 , memory 902 , and bus 903 .

Detailed ways

The implementation mode of the present invention is illustrated by specific specific examples below, and those who are familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this description. Obviously, the described embodiments are a part of the present invention. , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example

Fig. 1, Fig. 4-7 are the schematic diagrams of the device for measuring the drop point and speed of table tennis balls according to the present invention. :

The first panel 10, the second panel 20, the support plate 30, the base 40, the counter 70 and the server 80;

A spring is arranged between the first panel 10 and the second panel 20, the greater the speed at which the ping-pong ball hits the first panel, the greater the degree of compression of the spring; the second panel 20 One end is connected to the base 40 through a fastenable rotating shaft, and the other end is connected to the support plate 30 through a fastenable rotating shaft. The base 40 has a card slot, and the support plate 30 and the base 40 These structures provide a method for adjusting the inclination angles of the first panel and the second panel through the clamping of the card slots, and are convenient for folding, storage and carrying.

The second panel 20 is provided with an identification pin 50, and the first panel 10 is provided with a contact at a position corresponding to the identification pin 50. When the table tennis ball hits the first panel, and the flight speed of the table tennis ball exceeds the speed When the threshold is reached, the first panel extrudes the spring so that the contact is in contact with the identification pin 50, and the counter 70 is used to collect the target hit times data of the table tennis ball, and the target hit times The data is uploaded to the server.

Counting is one of the simplest basic operations. The counter 70 is a logic circuit for realizing this operation. In the digital system, the counter 70 mainly counts the number of pulses to realize the functions of measurement, counting and control. And upload the target hitting times data to the server 80.

The device for measuring the falling point and speed of the table tennis ball is used for testing the speed at which the athlete hits back the falling point of the table tennis ball.

The second panel 20 is also provided with an adjustable knob 60, the adjustable knob 60 is a threaded structure, connected with the identification pin 50, used to adjust the length of the identification pin 50, change the identification pin 50 and the first The distance of the touch point behind the panel, thus changing the speed threshold.

When the player's return ball accurately hits the first panel of the device while the speed of the table tennis ball exceeds the speed threshold, the hit is recorded as a valid hit.

A special training device for the athletes to hit back the table tennis ball and hit the designated area of the table;

The table tennis ball is sent to the direction of the athlete through the serving device, and then the athlete hits it back to the designated position of the opponent's table, and the device is placed at the designated position;

The scope of the table tennis ball drop, on the table tennis table, fix one or more positions, specify that the table tennis ball can only fall on these positions, otherwise no points will be scored; each position is placed with a device, according to the subjects practiced or tested by the athletes to adjust the quantity and placement of the devices.

A special table tennis training device capable of setting the difficulty of batting tasks;

The size of the first panel of the device can be used as an indicator of the difficulty of the hitting task. The first panel is a detachable flat panel, which can be replaced by flat panels with different areas. The larger the area of the first panel, the easier it is to be hit, which means the less difficult the batting task.

Fig. 3 is the flow chart of the method for measuring the drop point and speed of the table tennis ball in the present invention. As shown in Fig. 3, a method for measuring the drop point and speed of the table tennis ball provided by the embodiment of the present invention includes:

S101, collect the target hit times data of the table tennis ball through the counter, and upload the target hit times data to the server;

Specifically, the counter 70 is used to collect the data of the number of hits on the table tennis target.

S102, receiving the target hit times data through the server, and controlling the projection range of the projector based on the target hit times data;

Specifically, the range of the table tennis ball falling, on the table tennis table, fixes a position, and specifies that the table tennis ball can only fall to this position, otherwise no points will be scored; the range of this position can be large or small, according to the number of hits by the players. Adjustment.

The table tennis ball is sent to the direction of the athlete through the ball-serving device, and then the athlete hits it back to the designated area of the opponent's table.

Record the number of accurate landing points of table tennis balls, and set the rules of landing points. After falling into a certain number of hitting points, set multiple landing points at the same time. The method for positioning and tracking the falling point of the ball, the identification pin 50 is set on the second panel 20, the first panel 10 is provided with a contact point corresponding to the position corresponding to the identification pin 50, and when the ping-pong ball touches the contact point, the contact point is connected to the contact point. The identification pin 50 is in contact, and the counter 70 is used to collect the target hitting times data of the table tennis ball, and upload the target hitting times data to the server 80 . The positioning and tracking of the drop point of the table tennis ball is realized, and the problems of high cost or inaccurate measurement results in measuring the drop point and speed of the table tennis ball in the prior art are solved.

FIG. 4 is a schematic diagram of the physical structure of an electronic device provided by an embodiment of the present invention. As shown in FIG. 4 , the electronic device 100 includes: a processor 1001 (processor), a memory 1002 (memory), and a bus 1003;

Wherein, the processor 1001 and the memory 1002 complete mutual communication through the bus 1003;

The processor 1001 is used to call the program instructions in the memory 1002 to execute the methods provided by the above-mentioned method embodiments, for example, including: collecting the target hit times data of the table tennis ball through the counter 70, and storing the target hit times data Upload to server.

This embodiment provides a non-transitory computer-readable medium. The non-transitory computer-readable medium stores computer instructions. The computer instructions cause the computer to execute the methods provided in the above-mentioned method embodiments, for example, including: using the counter 70 to collect the table tennis data target hit times data, and upload the target hit times data to the server.

Those of ordinary skill in the art can understand that all or part of the steps to realize the above method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable medium. When the program is executed, the execution includes: The steps of the above-mentioned method embodiment; and the above-mentioned medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place , or can also be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without any creative efforts.

Through the above description of the implementations, those skilled in the art can clearly understand that each implementation can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable medium, such as ROM/RAM, disk , CD, etc., including several instructions to make a computer device (which may be a personal computer, a server 60, or a network device, etc.) execute the methods of various embodiments or some parts of the embodiments.

Although the present invention has been described in detail with general descriptions and specific examples above, it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present invention. Therefore, the modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the protection scope of the present invention.

Claims (7)

1. A device for weighing table tennis drop point and speed, characterized in that, comprising: first panel, second panel, support plate, base, counter and server; A spring is arranged between the first panel and the second panel, one end of the second panel is connected to the base through a fastenable rotating shaft, and the other end is connected to the support plate through a fastenable rotating shaft. Then, the base is provided with a card slot, and the support plate and the base are locked through the card slot; The second panel is provided with an identification pin, and the position corresponding to the identification pin on the back of the first panel is provided with a contact point. When the ping-pong ball hits the first panel and the flight speed of the ping-pong ball exceeds the speed threshold, The first panel squeezes the spring so that the contact is in contact with the identification pin, and the counter is used to collect the data of the number of target hits of the table tennis ball, and upload the data of the number of target hits to the server. 2. The device for weighing table tennis drop point and speed as claimed in claim 1, wherein the second panel is also provided with an adjustable knob, and the adjustable knob has a threaded structure and is connected with the identification pin, It is used to adjust the length of the identification pin, adjust the distance between the tip of the identification pin and the contact point, and change the speed threshold. 3. The device for measuring the drop point and speed of a table tennis ball as claimed in claim 1 or 2, wherein the first panel is a detachable and replaceable flat board, and the replaceable flat boards have different sizes. 4. A method for weighing table tennis drop point and speed, characterized in that, said method specifically comprises: The counter is used to collect data on the number of table tennis target hits and the number of times the speed exceeds the speed threshold, and upload the data on the number of times the target is hit to the server. 5. the method for measuring table tennis drop point and speed as claimed in claim 4, is characterized in that, the method for described table tennis drop point and speed for measuring also comprises: When multiple devices for measuring the drop point and speed of the table tennis ball are placed on the table, the server can simultaneously receive the data of the number of times the target is hit by different devices for measuring the drop point and speed of the table tennis ball, and perform data statistics respectively. 6. An electronic device, comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, characterized in that, when the processor executes the computer program, the computer program according to claims 4 to 5 is implemented. The steps of any one of the methods described. 7. A non-transitory computer-readable medium on which a computer program is stored, wherein when the computer program is executed by a processor, the steps of the method according to any one of claims 4 to 5 are realized .

Images