A table tennis table

Abstract

The present invention discloses a table tennis table, which can determine the location of the table tennis table. The table tennis table comprises a table body, a signal comparison device, an alarm device, and a first triboelectric touch sensor arranged near the upper edge of the side surface of the table body, and a second triboelectric touch sensor arranged near the lower edge of the side surface of the table body, wherein the first triboelectric touch sensor, the second triboelectric touch sensor and the alarm device are connected to the signal comparison device, and the signal comparison device is used to control the alarm device to send a corresponding alarm signal according to the comparison result of the peak value of the electric signal obtained by the first triboelectric touch sensor and the peak value of the electric signal obtained by the second triboelectric touch sensor.

Description

Technical Field

[0001] The present invention relates to the technical field of sports equipment, in particular to a table tennis table. Background Art

[0002] Edge balls are common in table tennis matches, and their identification can be controversial. It's especially difficult to distinguish whether a ball hits the top or bottom edge of the table, impacting both the player's performance and the progress of the match. Furthermore, conventional table tennis tables can't accurately determine the ball's landing point, making them ineffective in training.

[0003] Currently, high-speed video playback technology is commonly used in table tennis matches to judge edge shots, and expensive pressure sensors are generally required to locate the landing point, but this places high demands on the equipment and has high costs.

[0004] The triboelectric nanogenerator is a new type of generator. Its basic principle is to use friction to generate electric charges on the surface of a material and separate them, thereby generating an extremely high electric potential. This drives the directional movement of electrons in an external circuit, thereby converting weak mechanical energy collected from the environment into electrical energy. Conversely, the generated electrical signal can be used to characterize the physical parameters of mechanical motion. It can be used as a triboelectric self-driven sensor with the advantages of simple structure, wide material availability, and low cost. Summary of the Invention

[0005] The purpose of the embodiment of the present invention is to provide a table tennis table to realize the determination of the landing point of the table tennis table.

[0006] An embodiment of the present invention provides a table tennis table, comprising: a table body, a signal comparison device, an alarm device, and a first triboelectric touch sensor disposed near the upper edge of a side surface of the table body, and a second triboelectric touch sensor disposed near the lower edge of a side surface of the table body, wherein:

[0007] The first triboelectric touch sensor, the second triboelectric touch sensor, and the alarm device are connected to the signal comparison device. The signal comparison device is used to control the alarm device to issue a corresponding alarm signal based on a comparison result of a peak value of the electrical signal obtained by the first triboelectric touch sensor and a peak value of the electrical signal obtained by the second triboelectric touch sensor.

[0008] In an embodiment of the present invention, optionally, the signal comparison device is configured to control the alarm device to emit a corresponding alarm signal based on a comparison result of a peak value of the electrical signal obtained by the first triboelectric touch sensor and a peak value of the electrical signal obtained by the second triboelectric touch sensor, specifically including:

[0009] When the difference between the peak value of the electrical signal obtained by the first triboelectric touch sensor and the peak value of the electrical signal obtained by the second triboelectric touch sensor is positive, the signal comparison device controls the alarm device to emit a first type of alarm signal;

[0010] When the difference between the peak value of the electrical signal acquired by the first triboelectric touch sensor and the peak value of the electrical signal acquired by the second triboelectric touch sensor is negative, the signal comparison device controls the alarm device to issue a second type of alarm signal.

[0011] In any embodiment of the present invention, optionally, the alarm signal is a sound signal or an image signal.

[0012] In an embodiment of the present invention, optionally, the first triboelectric touch sensor is disposed at a corner of the platform, and includes a first sensing portion disposed on a surface of the platform and a second acquiring portion disposed on a side surface of the platform;

[0013] The second triboelectric touch sensor is disposed on a side surface of the platform, and the second triboelectric touch sensor is spaced apart from the second sensing portion.

[0014] In any embodiment of the present invention, optionally, the table tennis table further includes a landing point positioning device and a plurality of third triboelectric touch sensors arranged on the table surface of the table body, and the landing point positioning device is used to receive the peak values ​​of the electrical signals obtained by the plurality of third triboelectric touch sensors.

[0015] In an embodiment of the present invention, optionally, the plurality of third triboelectric touch sensors are arranged in an array.

[0016] In an embodiment of the present invention, optionally, the table tennis table further includes a summarizing device connected to the landing point positioning device, and the summarizing device is used to generate a summary data matrix based on the peak values ​​of the electrical signals obtained by the multiple third triboelectric touch sensors received by the landing point positioning device within a set period.

[0017] In the embodiment of the present invention, optionally, the third triboelectric touch sensor includes a friction material layer and a sensing electrode layer that are stacked.

[0018] In any embodiment of the present invention, optionally, the first triboelectric touch sensor includes a friction material layer, a sensing electrode layer, and an output electrode layer stacked together;

[0019] The second triboelectric touch sensor includes a friction material layer and a sensing electrode layer stacked together.

[0020] In an embodiment of the present invention, optionally, the friction material layer may be, but is not limited to, a dielectric material such as wood, FEP (Fluorinated Ethylene Propylene), PTFE (Poly TetraFluoroethylene), or PET (Polyethylene Terephthalate); and the sensing electrode layer may be, but is not limited to, a conductive material such as copper, aluminum, or carbon.

[0021] In a table tennis table employing this technical solution, both the first and second triboelectric touch sensors are connected to a signal comparison device. The first triboelectric touch sensor is positioned near the upper edge of the table's side surface, while the second triboelectric touch sensor is positioned near the lower edge. Therefore, when a table tennis ball touches the first or second triboelectric touch sensor, friction occurs. The signal comparison device then compares the peak values ​​of the electrical signals captured by the two triboelectric touch sensors and, based on the comparison result, controls the alarm device to emit a corresponding alarm signal. This alarm signal then allows the referee to determine the location of any edge-of-the-ball incidents during a table tennis match.

[0022] Compared with the existing technology, the table tennis table of this technical solution can locate the landing point of the table tennis ball during use, thereby helping athletes to train or allowing the game to proceed smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of a table tennis table according to an embodiment of the present invention;

[0024] Figure 2 is a structural block diagram of a platform according to an embodiment of the present invention;

[0025] Figure 3 Schematic diagram of the structure of a triboelectric touch sensor according to an embodiment of the present invention;

[0026] Figure 4 This is a diagram of the electrical signal output by the triboelectric touch sensor when a table tennis ball hits the surface of the triboelectric touch sensor;

[0027] Figure 5 is a schematic diagram of a table tennis ball hitting the first triboelectric touch sensor;

[0028] Figure 6 A schematic diagram of a table tennis ball hitting a second triboelectric touch sensor;

[0029] Figure 72 is a top view of a table tennis table according to an embodiment of the present invention.

[0030] Reference numerals:

[0031] 1- Ping-pong table; 2- table body; 3- support; 4- signal comparison device; 5- alarm device;

[0032] 6-first triboelectric touch sensor; 61-first sensing portion; 62-second sensing portion;

[0033] 7-second triboelectric touch sensor; 8-friction material layer; 9-sensing electrode layer;

[0034] 10-third triboelectric touch sensor; 11-landing point positioning device;

[0035] 12-Summarizing device; 13-Ping pong ball. DETAILED DESCRIPTION

[0036] In order to determine the location of the landing point of a table tennis table, an embodiment of the present invention provides a table tennis table. To make the purpose, technical solution and advantages of the present invention clearer, the present invention is further described in detail with reference to the following embodiments.

[0037] When the present application mentions ordinal numbers such as "first", "second", "third" or "fourth", unless the context clearly indicates an order, it should be understood that they are merely used for distinction.

[0038] Reference Figure 1 As shown, in each embodiment of the present application, the table tennis table 1 includes a table body 2 and pillars 3 for supporting the table body 2 .

[0039] like Figures 1 to 7 As shown, an embodiment of the present invention provides a table tennis table 1, comprising: a table body 2, a signal comparison device 4, an alarm device 5, and a first triboelectric touch sensor 6 disposed near the upper edge of the side of the table body 2, and a second triboelectric touch sensor 7 disposed near the lower edge of the side of the table body 2, wherein:

[0040] The first triboelectric touch sensor 6, the second triboelectric touch sensor 7 and the alarm device 5 are connected to the signal comparison device 4. The signal comparison device 4 is used to control the alarm device 5 to send a corresponding alarm signal based on the comparison result of the peak value of the electrical signal obtained by the first triboelectric touch sensor 6 and the peak value of the electrical signal obtained by the second triboelectric touch sensor 7.

[0041] In a table tennis table employing this technical solution, since both the first triboelectric touch sensor 6 and the second triboelectric touch sensor 7 are connected to the signal comparison device 4, and the first triboelectric touch sensor 6 is positioned near the upper edge of the side of the table body 2 of the table 1, and the second triboelectric touch sensor 7 is positioned near the lower edge of the side of the table body 2, friction is generated when a table tennis ball 13 touches the first triboelectric touch sensor 6 or the second triboelectric touch sensor 7. Since the peak values ​​of the electrical signals obtained by the triboelectric touch sensors differ depending on whether a table tennis ball collides with or not, the signal comparison device 4 can compare the peak values ​​of the electrical signals obtained by the two triboelectric touch sensors, thereby identifying the characteristics of a borderline ball and, based on the characteristics of the borderline ball, controlling the alarm device 5 to emit a corresponding alarm signal. The alarm signal may be, but is not limited to, an audio signal or an image signal. Furthermore, a wireless transmitter module may be provided in the signal comparison device 4, and a wireless receiver module may be provided in the alarm device 5, thereby enabling wireless transmission of signals between the signal comparison device 4 and the alarm device 5. Alternatively, the signal comparison device 4 and the alarm device 5 may be connected via a signal transmission line to enable wired transmission therebetween. In this case, the referee can quickly determine the location of a sideways ball that occurs during a table tennis match based on the alarm signal, thereby ensuring the smooth progress of the match.

[0042] Compared to the prior art, the table tennis table 1 of this technical solution can locate the landing point of the table tennis ball 13 during use, thereby improving the accuracy of the referee's judgment on the edge ball, thereby making the game more fair. In addition, when the table tennis table 1 of this technical solution is used for training, it can also effectively help athletes train according to the landing point.

[0043] In a specific embodiment of the present invention, the signal comparison device controls the alarm device to issue a corresponding alarm signal based on the comparison result of the peak value of the electrical signal obtained by the first triboelectric touch sensor and the peak value of the electrical signal obtained by the second triboelectric touch sensor, which can be:

[0044] When the difference between the peak value of the electrical signal obtained by the first triboelectric touch sensor and the peak value of the electrical signal obtained by the second triboelectric touch sensor is positive, the signal comparison device controls the alarm device to emit a first type of alarm signal;

[0045] When the difference between the peak value of the electrical signal acquired by the first triboelectric touch sensor and the peak value of the electrical signal acquired by the second triboelectric touch sensor is negative, the signal comparison device controls the alarm device to issue a second type of alarm signal.

[0046] The first type of alarm signal and the second type of alarm signal may be the same or different. Figure 3 , Figure 3Figure 2 is a schematic diagram of the structure of a first triboelectric touch sensor and a second triboelectric touch sensor. As can be seen, the first and second triboelectric touch sensors comprise a friction material layer 8 and a sensing electrode layer 9, which are sequentially connected. The friction material layer 8 can be, but is not limited to, dielectric materials such as wood, FEP, PTFE, or PET; the sensing electrode layer 9 can be, but is not limited to, conductive materials such as copper, aluminum, or carbon. Because this layered structure allows for a wide variety of materials to be selected and is relatively inexpensive, it effectively reduces the cost of the table tennis table.

[0047] The working principle of the triboelectric touch sensor is that due to the different charges carried by the friction material on the surface of the ping-pong ball and the triboelectric touch sensor, a high potential difference is generated when the ping-pong ball collides with and separates from the triboelectric touch sensor, which drives the electrons in the external circuit to move in a directional manner, thereby generating an electrical signal. To facilitate understanding of the above principle, please refer to Figure 4 As shown, Figure 4 The output electrical signal diagram of a ping-pong ball striking the surface of a triboelectric touch sensor is shown. Negative and positive peak electrical signals are generated when the ping-pong ball strikes and separates from the surface of the triboelectric touch sensor, respectively. The peak value of the electrical signal obtained by the triboelectric touch sensor described in this application can be calculated by converting the difference between the positive and negative peak electrical signals.

[0048] In the embodiment of the present invention, the first triboelectric touch sensor 6 and the second triboelectric touch sensor 7 can be arranged on the table 2 in various ways, as long as they can accurately collect the landing position information of the table tennis ball 13 on the upper edge and the lower edge of the side of the table 2. Figure 5 and Figure 6 As shown, the first triboelectric touch sensor 6 is disposed at the corner of the platform 2 and includes a first sensing portion 61 disposed on the surface of the platform 2 and a second sensing portion 62 disposed on the side of the platform 2;

[0049] The second triboelectric touch sensor 7 is disposed on a side surface of the platform 2 , and the second triboelectric touch sensor 7 is spaced apart from the second sensing portion 62 .

[0050] Figure 5 It is a schematic diagram of a side shot, and is a side view of the table tennis ball 13 hitting the upper edge of the side of the table 2. Figure 2 and Figure 4 , the first triboelectric touch sensor 6 will generate a peak electrical signal, the signal comparison device 4 simultaneously collects the electrical signals of the two triboelectric touch sensors, and makes a judgment by comparing the difference between the two electrical signals. Figure 6 It is a side view of the table tennis ball 13 hitting the lower edge of the side of the table body 2.

[0051] Reference Figure 1 、 Figure 2 and Figure 7 In any embodiment of the present invention, optionally, the table tennis table 1 further includes a landing point positioning device 11 and a plurality of third triboelectric touch sensors 10 arranged on the surface of the table body 2, and the landing point positioning device 11 is used to receive the peak values ​​of the electrical signals obtained by the plurality of third triboelectric touch sensors 10.

[0052] The working principle of the third triboelectric touch sensor 10 is the same as that of the first triboelectric touch sensor and the second triboelectric touch sensor, and their structures can be the same or different. Figure 3 The third triboelectric touch sensor 10 may also include a stacked friction material layer 8 and a sensing electrode layer 9, wherein the friction material layer 8 may be, but is not limited to, a dielectric material such as wood, FEP, PTFE, or PET; and the sensing electrode layer 9 may be, but is not limited to, a conductive material such as copper, aluminum, or carbon.

[0053] The basic working principle of the landing point positioning device 11 is: when the table tennis ball falls at different positions on the table, it will hit the third triboelectric touch sensor 10 corresponding to the position, and the hit third triboelectric touch sensor 10 will generate an electrical signal, which is converted into a corresponding peak value of the electrical signal and transmitted to the landing point positioning device 11, so that the landing point of the table tennis ball on the table can be located by the landing point positioning device 11. Then, the athlete's combat and training status can be evaluated through the multiple data collected by the landing point positioning device 11, and the athlete's combat skills can be adjusted with reference to the evaluation results.

[0054] Reference Figure 7 , Figure 7 2 is a top view of the distribution of the third friction touch sensors 10 on the surface of the platform 2. In the embodiment of the present invention, optionally, a plurality of third friction electric touch sensors 10 are arranged in an array.

[0055] By evenly distributing the plurality of third triboelectric sensors 10 on the surface of the platform 2, Figure 2 The landing point positioning device 11 in the apparatus locates the landing point of the table tennis ball falling on the table at various angles. The size of the third friction touch sensor 10 can be adjusted according to the accuracy requirement.

[0056] Further, refer to Figure 2 In an embodiment of the present invention, optionally, the table tennis table 1 further includes a summarizing device 12 connected to the landing point positioning device 11, and the summarizing device 12 is used to generate a summary data matrix according to the peak values ​​of the electrical signals obtained by the multiple third triboelectric touch sensors 10 received by the landing point positioning device 11 within a set period.

[0057] Among them, a wireless transmitting module can also be set in the landing point positioning device 11, and a wireless receiving module can be set in the aggregation device 12, so that wireless transmission of signals between the landing point positioning device 11 and the aggregation device 12 can be realized; of course, the landing point positioning device 11 and the aggregation device 12 can also be connected through a signal transmission line to realize wired transmission between the two.

[0058] By using the aggregation device 12 to generate a summary data matrix from the peak values ​​of the electrical signals obtained by the multiple third triboelectric touch sensors 10 received by the landing point positioning device 11 within the set period, the training status of the corresponding athlete within the set period can be more intuitively seen, which is conducive to timely adjustment of his combat skills.

[0059] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A table tennis table, characterized in that: include: A platform, a signal comparison device, an alarm device, a first triboelectric touch sensor disposed near the upper edge of the side surface of the platform, and a second triboelectric touch sensor disposed near the lower edge of the side surface of the platform, wherein: The first triboelectric touch sensor, the second triboelectric touch sensor and the alarm device are connected to the signal comparison device, and the signal comparison device is used to control the alarm device to send a corresponding alarm signal according to a comparison result of a peak value of the electrical signal obtained by the first triboelectric touch sensor and a peak value of the electrical signal obtained by the second triboelectric touch sensor; The first triboelectric touch sensor is disposed at a corner of the platform, and includes a first sensing portion disposed on the surface of the platform and a second sensing portion disposed on a side surface of the platform; The second triboelectric touch sensor is disposed on a side surface of the platform, and the second triboelectric touch sensor is spaced apart from the second sensing portion; The signal comparison device is used to control the alarm device to send a corresponding alarm signal according to a comparison result of the peak value of the electrical signal obtained by the first triboelectric touch sensor and the peak value of the electrical signal obtained by the second triboelectric touch sensor, specifically including: When the difference between the peak value of the electrical signal acquired by the first triboelectric touch sensor and the peak value of the electrical signal acquired by the second triboelectric touch sensor is positive, the signal comparison device controls the alarm device to issue a first type of alarm signal; When the difference between the peak value of the electrical signal acquired by the first triboelectric touch sensor and the peak value of the electrical signal acquired by the second triboelectric touch sensor is negative, the signal comparison device controls the alarm device to issue a second type of alarm signal.

2. The table tennis table according to claim 1, characterized in that: The alarm signal is a sound signal or an image signal.

3. The table tennis table according to claim 1, characterized in that: The table tennis table further includes a landing point positioning device and a plurality of third friction electric touch sensors arranged on the table surface of the table body, wherein the landing point positioning device is used to receive peak values ​​of electrical signals acquired by the plurality of third friction electric touch sensors.

4. The table tennis table according to claim 3, characterized in that: The plurality of third triboelectric touch sensors are arranged in an array.

5. The table tennis table according to claim 4, characterized in that: It also includes a summarizing device connected to the landing point positioning device, and the summarizing device is used to generate a summary data matrix according to the peak values ​​of the electrical signals obtained by the plurality of third friction electric touch sensors received by the landing point positioning device within a set period.

6. The table tennis table according to any one of claims 3 to 5, characterized in that: The third triboelectric touch sensor includes a friction material layer and a sensing electrode layer which are stacked.

7. The table tennis table according to any one of claims 1 to 5, characterized in that: The first triboelectric touch sensor comprises a friction material layer and a sensing electrode layer stacked in layers; The second triboelectric touch sensor includes a friction material layer and a sensing electrode layer which are stacked.

8. The table tennis table according to claim 7, characterized in that: The friction material layer is made of wood, FEP, PTFE or PET; the induction electrode layer is made of copper, aluminum or carbon.

Images