CN210874040U

CN210874040U - Table tennis service net touching recognition device

Info

Publication number: CN210874040U
Application number: CN201921466369.6U
Authority: CN
Inventors: 李雪莲; 宋润桐; 宋鹏; 宋福东
Original assignee: Shandong University
Current assignee: Shandong University
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-06-30
Anticipated expiration: 2029-09-05

Abstract

The utility model relates to a table tennis service net touching recognition device, which comprises a vibration alarm device and a remote controller; the vibration alarm device comprises a miniature vibration sensor, an infrared receiver, an alarm and a power supply which are connected to the singlechip through wires; the remote controller comprises a control key, an infrared emitter and a remote controller battery which are connected to the single chip microcomputer. The utility model can turn on the vibration alarm device before the table tennis player serves the table tennis through the remote controller, and assist the referee to accurately judge whether to touch the net during serving the table tennis; the vibration alarm device is turned off in time after the ball serving of the athlete is finished, so that the condition that the judgment of a judge is influenced by the touch of the ball after serving is avoided, and the fairness of the competition is ensured; simultaneously the utility model discloses dismantle simple to operate, the low price can install the use immediately under most circumstances, and the range of application is wider.

Description

Table tennis service net touching recognition device

Technical Field

The utility model relates to a table tennis service touches net recognition device belongs to the sports equipment field.

Background

The table tennis ball has high speed and strong rotation, and the conditions of net rubbing and edge rubbing often occur. When the table tennis is played and touches the net, the table tennis should be played again. When people are tired and distracted, the referee sometimes cannot see whether to wipe the net or wipe the edges, which leads to disputes. In games such as tennis and badminton, an eagle eye device is used for processing disputed penalty judgment balls, the device divides a three-dimensional space in a game field into measurement units calculated by millimeters by means of computer calculation, basic data of tennis flight tracks are captured simultaneously from different angles by using a high-speed camera, and then the data are calculated by the computer to generate a three-dimensional image. Finally, the motion route and the drop point of the tennis ball are clearly shown by the large screen by utilizing the instant imaging technology. The eagle eye (VAR) technology in the T2 diamond game in 2019 firstly entered the table tennis field. However, the eagle eye device is expensive in manufacturing cost, and in some games, the maintenance cost of each week is tens of thousands of dollars, which is not beneficial to popularization in common table tennis games. It is necessary to develop an alarm device for table tennis serving net touching.

Chinese patent document CN204671866U discloses a ping-pong ball touching pulse indicating device, which comprises a table, left and right resonance chambers, left and right sound-proof covers, left and right sound traps, a wireless transmitter, a touching detector, a passing detector, a processor, a wireless receiver, and a display screen. When the table tennis does not cross the net, the sound catcher under the table case catches the sound to generate pulse information, the pulse signal is transmitted to the processor through the wireless transmitter to form judgment, the judgment is processed by the processor, and the display displays the judgment. However, the indicating device can only judge whether the table tennis ball falls on the table or not and cannot give an alarm in time whether the table tennis ball touches the net or not.

Chinese patent document CN107694062A discloses a device for determining whether a table tennis ball touches the net before flying through the net, which includes a module for acquiring data of a photoelectric sensor and determining whether the table tennis ball flies through the net, and a module for determining whether the table tennis ball touches the net before flying through the net. Through disposing multiunit shading formula sensor above the net, the light path is sheltered from the back voltage generating circuit and is produced photoelectric sensing data by the object between illuminator and the receipts light ware, acquires table tennis above the net through or touch the data of net and sends to the server. However, the light signal can affect the vision of the player and the referee when the light signal is irradiated on the table tennis ball.

Chinese patent document CN204275458U discloses a table tennis serving net-wiping auxiliary referee device, which comprises a vibration sensor installed on a stand column at two ends of a net, wherein the vibration sensor is connected with an alarm through a wire, the alarm comprises a relay for receiving a pulse current signal of the vibration sensor to act, the relay is connected with a power supply, a switch, a load resistor, an alarm lamp, a buzzer and a time relay for delaying the action state of the alarm lamp and the buzzer through wires. But the device can not only capture and alarm the instantaneous vibration generated when the table tennis is rubbed by the net during serving, but also alarm the net touch except serving, which can cause interference to the normal game of the players.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model aims to provide a table tennis service touches net recognition device, mainly used solve among the prior art because of lack touch the not obvious erroneous judgement problem that leads to of net discernment when serving in the table tennis match to the device is dismantled simple to operate, and the range of application is wide.

The technical scheme of the utility model as follows:

a table tennis service net touching recognition device comprises a vibration alarm device and a remote controller; the vibration alarm device comprises a miniature vibration sensor, an infrared receiver, an alarm and a power supply which are respectively connected to the first singlechip through leads; the remote controller comprises a control key, an infrared emitter and a remote controller battery which are respectively connected to the second singlechip through leads.

According to the present invention, the micro vibration sensor is preferably of the type CSX-SEN-180A/300A, BL600-DIP or YT-JM-CGQ085 TP; the first single chip microcomputer and the second single chip microcomputer can be the same or different in model, and the model is selected from STC12C5A16S2, STC89C52RC or AT89C 51; the parameters of the infrared receiver and the infrared transmitter are that the diameter of the cap neck is 3mm, the wavelength is 940nm, the maximum forward current is 75mA, and the maximum reverse voltage is 5V.

According to the utility model discloses it is preferred, vibration alarm device is the cylinder, diameter range 3 ~ 4cm, and range of height 6 ~ 7 cm.

According to the utility model discloses it is preferred, vibration alarm device is the cuboid, length range 3 ~ 4cm, width range 3 ~ 4cm, height range 6 ~ 7 cm.

According to the utility model, the vibration alarm device is preferably arranged inside or outside the net racks at the two sides of the table tennis table; further, the vibration alarm device is attached to the inner walls of the net racks on the two sides of the table tennis table or fixed on the net racks on the two sides of the table tennis table by using a binding belt.

According to the utility model discloses it is preferred, infrared transmitter and infrared receiver's maximum transmission receiving radius is 8 m.

According to the utility model discloses preferred, the alarm includes parallelly connected bee calling organ and LED lamp.

The working method of the table tennis serving net touching identification device comprises the following steps:

in table tennis competition, a table tennis player turns on a remote controller switch before serving, and establishes communication with an infrared receiver in a vibration alarm device through an infrared transmitter to start an alarm function of the vibration alarm device. If a table tennis player touches the net when serving, the miniature vibration sensor arranged in the vibration alarm device of the net racks on two sides of the table tennis table detects the vibration of the net, the alarm is controlled to make sound and light warning through the first single chip microcomputer, the referee resets the alarm device through the infrared transmitter according to the control keys, and the player serves again. When the user does not serve the ball, the referee closes the alarm function of the alarm device through the control key, and does not alarm when touching the net.

The utility model has the advantages that:

the utility model can turn on the vibration alarm device before the table tennis player serves the table tennis through the remote controller, and assist the referee to accurately judge whether to touch the net during serving the table tennis; the vibration alarm device is closed in time after the ball serving of the athlete is finished, so that the condition that the touch net after the ball serving influences judgment of a judge is avoided, and the fairness of the match is ensured. Simultaneously the utility model discloses dismantle simple to operate, the low price can install the use immediately under most circumstances, and the range of application is wider.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is the internal structure diagram of the middle vibration alarm device of the present invention.

Fig. 3 is a schematic diagram of the internal structure of the remote controller of the present invention.

In the figure: 1-a table tennis net rack with a built-in vibration alarm device, 2-a net, 3-a table, 4-a remote controller, 5-a first singlechip, 6-a miniature vibration sensor, 7-an infrared receiver, 8-an alarm, 9-a power supply, 10-a second singlechip, 11-a control key, 12-an infrared emitter and 13-a remote controller battery.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Examples

As shown in fig. 1-3, a table tennis serving net touching recognition device comprises a vibration alarm device and a remote controller 4; the vibration alarm device comprises a first singlechip 5, a miniature vibration sensor 6, an infrared receiver 7, an alarm 8 and a power supply 9; the miniature vibration sensor 6, the infrared controller 7, the alarm 8 and the power supply 9 are respectively connected to the first singlechip 5 through leads; the alarm 8 is composed of a buzzer and an LED lamp which are connected in parallel. The remote controller 4 comprises a control key 11, an infrared emitter 12 and a remote controller battery 13 which are respectively connected with the second singlechip 10 through leads.

The model of the micro vibration sensor 6 is CSX-SEN-180A/300A, the model of the first single chip microcomputer 5 is STC12C5A16S2, the model of the second single chip microcomputer 10 is STC89C52RC, the parameters of the infrared receiver 7 and the infrared emitter 12 are that the diameter of a cap neck is 3mm, the wavelength is 940nm, the maximum forward current is 75mA, the maximum reverse voltage is 5V, and the maximum transmitting and receiving radius is 8 m.

The vibration alarm device in the embodiment is cylindrical, has the diameter of 4cm and the height of 6cm, and is attached to the inner walls of the net racks on the two sides of the table tennis table; if the table tennis table net rack is a column or needs to be temporarily installed, the table tennis table net rack can also be fixed on the two sides of the table tennis table net rack through the binding belts for use.

The utility model discloses a concrete working method as follows:

in table tennis competition, before a table tennis player serves, a remote controller switch is turned on, communication is established with an infrared receiver 7 in a vibration alarm device through an infrared transmitter 12, and the alarm function of the vibration alarm device is started. If a table tennis player touches the net 2 when serving, the miniature vibration sensor 6 of the vibration alarm device in the net rack 1 detects the vibration of the net 2, the alarm 8 is controlled to send out sound and light warning through the first single chip microcomputer 5, the judge resets the alarm device through the infrared emitter 12 according to the control key 11, and the player serves again. When the user does not serve the ball, the referee closes the alarm function of the alarm device through the control key 11, and does not alarm when touching the net.

Claims

1. A table tennis serving net touching recognition device is characterized by comprising a vibration alarm device and a remote controller; the vibration alarm device comprises a miniature vibration sensor, an infrared receiver, an alarm and a power supply which are respectively connected to the first singlechip through leads; the remote controller comprises a control key, an infrared emitter and a remote controller battery which are respectively connected to the second singlechip through leads;

the model of the micro vibration sensor is CSX-SEN-180A/300A, BL600-DIP or YT-JM-CGQ085 TP; the first single chip microcomputer and the second single chip microcomputer are the same or different, and the model is selected from STC12C5A16S2, STC89C52RC or AT89C 51; the parameters of the infrared receiver and the infrared transmitter are that the diameter of the cap neck is 3mm, the wavelength is 940nm, the maximum forward current is 75mA, and the maximum reverse voltage is 5V.

2. The table tennis service net strike identification device of claim 1, wherein the vibration alarm device is a cylinder with a diameter ranging from 3 cm to 4cm and a height ranging from 6cm to 7 cm.

3. The table tennis service net touching recognition device of claim 1, wherein the vibration alarm device is a cuboid, and has a length of 3-4 cm, a width of 3-4 cm, and a height of 6-7 cm.

4. The table tennis ball strike identification device of claim 1, wherein the infrared transmitter and infrared receiver have a maximum transmission and reception radius of 8 m.

5. The table tennis service net strike identification device of claim 1, wherein the alarm comprises a buzzer and an LED light in parallel.