Smart tennis ball positioning device

Abstract

The utility model discloses an intelligent tennis ball positioning device, which belongs to the field of sports equipment and comprises a tennis ball, a buffer component, an equipment fixing part, an IMU (Inertial Measurement Unit) sensor, a lithium battery and wireless transmission equipment, the instrument fixing part is arranged in the tennis ball, the buffering assembly is installed between the instrument fixing part and the inner side of the tennis ball, the instrument fixing part is of a cube structure, a plurality of partition plates are arranged in the instrument fixing part, and an IMU sensor, a lithium battery and wireless transmission equipment are installed between every two partition plates; the lithium battery is electrically connected with the IMU sensor and the wireless transmission device, and the IMU sensor is electrically connected with the wireless transmission device. The problem that in the prior art, a large amount of manpower is consumed to judge whether the tennis ball is out of the limit in the actual movement process is solved, and cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of sports equipment, concretely relates to a wisdom tennis positioning device. BACKGROUND

[0002] Tennis is a net sport, and during the competition between two parties, the tennis ball often goes out of the court, and the tennis ball out of the court is judged as a loss of points. In the past, the traditional judgment of out-of-court is mainly judged by the referee (line judge), and the current large-scale competition uses high-speed cameras to judge whether it is out of court. However, the current small and medium-sized competition still relies on the line judge to judge, which completely depends on the judgment level and concentration ability of the line judge. At the same time, no less than 5 line judges are needed to participate, which causes great consumption of human resources. The use of high-speed cameras to judge whether it is out of court is very costly, and the high-speed cameras are very expensive, and only large-scale competitions will use them. Therefore, a wisdom tennis positioning device with low cost, simple production, high precision and good user experience needs to be researched. CONTENT OF THE UTILITY MODEL

[0003] The utility model discloses a wisdom tennis positioning device to solve the problem that a large amount of manpower is consumed to judge whether the tennis ball is out of court in the actual movement of the prior art.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A wisdom tennis positioning device, comprising: a tennis ball, a buffer assembly, an instrument fixing part, an IMU sensor, a lithium battery and a wireless transmission device;

[0006] The instrument fixing part is arranged inside the tennis ball, the buffer assembly is installed between the instrument fixing part and the inner side of the tennis ball, the instrument fixing part is a cube structure, a plurality of partitions are arranged inside the instrument fixing part, the IMU sensor, the lithium battery and the wireless transmission device are respectively installed between each partition, the lithium battery is electrically connected with the IMU sensor and the wireless transmission device, and the IMU sensor is electrically connected with the wireless transmission device.

[0007] In some embodiments, the tennis ball comprises a felt and an inner container, the felt is arranged on the outer side surface of the tennis ball, and the inner container is arranged inside the tennis ball and wrapped by the felt.

[0008] In some embodiments, the buffer assembly comprises a buffer air bag and air bag particles, the buffer air bag is arranged at the center of the inner container, and the air bag particles are arranged between the buffer air bag and the inner side surface of the inner container.

[0009] In some embodiments, a plurality of air bag particles are arranged to fill the gap between the buffer air bag and the inner side surface of the inner container.

[0010] In some embodiments, the position of each air bag particle is fixed.

[0011] In some implementations, the edges of the device fixation element are positioned on the inner wall of the cushioning airbag.

[0012] In some embodiments, the edges are smooth rounded corners.

[0013] In some implementations, the wireless transmission device uses the ESP32 chip.

[0014] In some embodiments, two partitions are provided, and the partitions are vertically mounted on the inner bottom surface of the instrument fixation component.

[0015] In some embodiments, the lithium battery is disposed between the two separators.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This utility model discloses a smart tennis ball positioning device. An instrument fixing component is disposed inside the tennis ball, and a buffer assembly is installed between the instrument fixing component and the inner side of the tennis ball. The instrument fixing component has a cubic structure and multiple partitions are arranged inside it. An IMU sensor, a lithium battery, and a wireless transmission device are respectively installed between each partition. The lithium battery is electrically connected to the IMU sensor and the wireless transmission device, and the IMU sensor is electrically connected to the wireless transmission device. Through the built-in IMU (Inertial Measurement Unit) sensor, this device can collect the tennis ball's motion data in real time, including position, velocity, acceleration, and spin, thereby achieving precise positioning and solving the problem of existing technologies requiring significant manpower to determine whether the tennis ball is out of bounds during actual movement. Furthermore, the components used in this device are less expensive than those used in high-speed cameras.

[0018] Furthermore, this invention places the cushioning airbag in the center of the inner bladder, with airbag particles positioned between the cushioning airbag and the inner surface of the inner bladder. This effectively protects the internal IMU sensor, lithium battery, and wireless transmission equipment, preventing damage during tennis ball impacts. Simultaneously, this design also improves the durability and lifespan of the tennis ball.

[0019] Furthermore, this invention uses a lithium battery as a power source to provide stable power support for the IMU sensor and the wireless transmission device. The wireless transmission device is responsible for transmitting the collected data to external devices, such as mobile phones, computers, or coaching systems, in real time for users or coaches to analyze and evaluate, ensuring secure data transmission and stable system operation.

[0020] Furthermore, the edges of the fixture in this invention are set as smooth rounded corners, which further reduces the wear and tear on the tennis ball and internal components during the hitting process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the intelligent tennis ball positioning device provided in Embodiment 1;

[0022] Figure 2 A schematic diagram of the structure of the buffer airbag and airbag particles of the smart tennis ball positioning device provided in Embodiment 1;

[0023] Figure 3 This is a schematic diagram of the structure of the instrument fixing component of the smart tennis positioning device provided in Embodiment 1;

[0024] Figure 4 This is a schematic diagram illustrating the working principle of the smart tennis ball positioning device provided in Example 1.

[0025] In the diagram, 1. Felt; 2. Inner liner; 3. Airbag particles; 4. Buffer airbag; 5. Instrument fixation; 6. IMU sensor; 7. Lithium battery; 8. Wireless transmission equipment. Detailed Implementation

[0026] In the following description, only certain exemplary embodiments are briefly described. The described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and descriptions are considered to be exemplary in nature and not restrictive.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0031] Example 1

[0032] like Figure 1 As shown, this embodiment provides a smart tennis ball device. The outermost layer of the device is felt 1, which wraps around an inner bladder 2. The inner bladder 2 has sufficient elasticity, and the tennis ball's elasticity during the match is due to the presence of the inner bladder 2. At the center of the inner bladder 2 is a cushioning airbag 4, which wraps around the device fixing component 5. Located between the center of the inner bladder 2 and the cushioning airbag 4 are airbag particles 3. The function of the airbag particles 3 is to fix the inner bladder 2 and the cushioning airbag 4, and the position of each airbag particle 3 is fixed.

[0033] like Figure 2 As shown, the airbag 4 encloses the instrument fixation component 5, and the positions of the airbag 4 and the instrument fixation component 5 are fixed. The instrument fixation component 5 has a cubic structure, with all eight vertices located on the inner wall of the airbag 4. The instrument fixation component 5 houses an IMU sensor 6, a lithium battery 7, and a wireless transmission device 8.

[0034] like Figure 3 As shown, the instrument fixture 5 has two partitions that are vertically mounted on the inner bottom surface of the instrument fixture 5. An IMU sensor 6, a lithium battery 7 and a wireless transmission device 8 are installed between each partition. The lithium battery 7 is electrically connected to the IMU sensor 6 and the wireless transmission device 8, and the IMU sensor 6 is electrically connected to the wireless transmission device 8. The lithium battery 7 is located between the two partitions. The wireless transmission device 8 uses an ESP32 chip.

[0035] like Figure 4As shown, the working principle of the smart tennis ball positioning device provided in this embodiment is as follows: The IMU sensor captures the motion state of the tennis ball in three-dimensional space in real time, including key information such as acceleration, angular velocity, and direction, and transmits this information to the host computer via a wireless transmission device. In the application of tennis ball positioning, the host computer uses the data provided by the IMU sensor, combined with the size and boundary information of the tennis court, to track and judge the trajectory of the tennis ball in real time. If the trajectory of the tennis ball exceeds the preset boundary range, the host computer will immediately issue an alarm or prompt, indicating that the tennis ball has gone out of bounds, thereby determining whether it is a point lost or a point gained.

[0036] This embodiment utilizes a built-in IMU sensor 6, enabling the device to collect real-time motion data of the tennis ball, including its position, speed, acceleration, and spin. This allows for precise positioning, solving the problem of existing technologies requiring significant manpower to determine whether the ball is out of bounds during actual play. Furthermore, the components used in this device are less expensive than those of high-speed cameras. The smart tennis ball positioning device provided in this embodiment includes a partition that effectively secures the IMU sensor 6, lithium battery 7, and wireless transmission device 8, preventing them from shaking or shifting. This is crucial for ensuring the accuracy of sensor data and the long-term reliability of the device, and reduces the direct impact of the impact force generated during the tennis ball's hit or collision on internal components, thereby lowering the risk of component damage. The partition also separates the IMU sensor 6, lithium battery 7, and wireless transmission device 8, reducing electromagnetic interference between them and ensuring the normal operation of the device and the accuracy of the data.

[0037] Example 2

[0038] This embodiment provides a smart tennis ball positioning device, including: a tennis ball, a buffer assembly, an instrument fixing component 5, an IMU sensor 6, a lithium battery 7, and a wireless transmission device 8;

[0039] The instrument fixing component 5 is disposed inside the tennis ball, and the buffer assembly is installed between the instrument fixing component 5 and the inner side of the tennis ball. The instrument fixing component 5 has a cubic structure. An IMU sensor 6, a lithium battery 7, and a wireless transmission device 8 are installed inside the instrument fixing component 5. The lithium battery 7 is electrically connected to the IMU sensor 6 and the wireless transmission device 8, and the IMU sensor 6 is electrically connected to the wireless transmission device 8.

[0040] The tennis ball includes a felt 1 and an inner bladder 2. The felt 1 is disposed on the outer surface of the tennis ball, and the inner bladder 2 is disposed inside the tennis ball and wrapped by the felt 1. The edges of the instrument fixing component 5 are disposed on the inner wall of the cushioning airbag 4, and the edges are smooth rounded corners.

[0041] The buffer assembly includes a buffer airbag 4 and airbag particles 3. The buffer airbag 4 is located at the center of the inner liner 2, and the airbag particles 3 are located between the buffer airbag 4 and the inner surface of the inner liner 2. The airbag particles 3 fill the gap between the buffer airbag 4 and the inner surface of the inner liner 2, and the position of each airbag particle 3 is fixed.

[0042] The edges of the instrument fixing part 5 are set on the inner wall of the buffer airbag 4, and the edges are smooth rounded corners.

[0043] The wireless transmission device 8 uses the ESP32 chip.

[0044] The device provided in this embodiment achieves real-time and accurate monitoring of the tennis ball's motion status through a built-in IMU sensor 6. The IMU sensor 6 can capture key information such as the tennis ball's acceleration, angular velocity, and direction in three-dimensional space. This data is crucial for analyzing the tennis ball's trajectory, speed, and position. By wirelessly transmitting this data to a host computer, users can understand the tennis ball's motion status in real time, thereby making more accurate judgments and decisions. Secondly, the combined use of the cushioning airbag 4 and airbag particles 3 not only effectively absorbs the impact force generated during the tennis ball's impact but also prevents damage to the tennis ball due to collisions during high-speed movement. Simultaneously, the edges of the device fixing component 5 are designed with smooth rounded corners, further reducing the damage to the surrounding environment caused by the tennis ball's impact and improving safety. Furthermore, the wireless transmission device 8 uses an ESP32 chip, which features low power consumption, high performance, and rich peripherals and interfaces, ensuring stable and fast data transmission. This not only improves the accuracy of tennis ball positioning but also allows the device to maintain low power consumption during prolonged use, extending battery life.

[0045] As is known from common technical knowledge, this utility model can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the above-disclosed embodiments are merely illustrative in all respects and are not the only ones. All changes within the scope of this utility model or equivalent to this utility model are included in this utility model.

Claims

1. A smart tennis ball positioning device, characterized in that, include: Tennis ball, cushioning components, instrument fasteners (5), IMU sensor (6), lithium battery (7), and wireless transmission device (8); The instrument fixing component (5) is located inside the tennis ball. The buffer assembly is installed between the instrument fixing component (5) and the inner side of the tennis ball. The instrument fixing component (5) has a cubic structure. Multiple partitions are provided inside the instrument fixing component (5). An IMU sensor (6), a lithium battery (7) and a wireless transmission device (8) are installed between each partition. The lithium battery (7) is electrically connected to the IMU sensor (6) and the wireless transmission device (8). The IMU sensor (6) is electrically connected to the wireless transmission device (8).

2. The intelligent tennis ball positioning device according to claim 1, characterized in that, The tennis ball includes a felt (1) and an inner bladder (2). The felt (1) is placed on the outer surface of the tennis ball, and the inner bladder (2) is placed inside the tennis ball and is wrapped by the felt (1).

3. The intelligent tennis ball positioning device according to claim 2, characterized in that, The buffer assembly includes a buffer airbag (4) and airbag particles (3). The buffer airbag (4) is located at the center of the inner liner (2), and the airbag particles (3) are located between the buffer airbag (4) and the inner surface of the inner liner (2).

4. The intelligent tennis ball positioning device according to claim 3, characterized in that, Multiple airbag particles (3) are set to fill the gap between the inner surface of the buffer airbag (4) and the inner liner (2).

5. The intelligent tennis ball positioning device according to claim 4, characterized in that, The position of each airbag particle (3) is fixed.

6. The intelligent tennis ball positioning device according to claim 3, characterized in that, The edges of the instrument fixing part (5) are set on the inner wall of the buffer airbag (4).

7. The intelligent tennis ball positioning device according to claim 6, characterized in that, The edges are smooth rounded corners.

8. The intelligent tennis ball positioning device according to claim 1, characterized in that, The wireless transmission device (8) uses the ESP32 chip.

9. The intelligent tennis ball positioning device according to claim 1, characterized in that, Two partitions are provided, and the partitions are vertically installed on the inner bottom surface of the instrument fixation component (5).

10. A smart tennis ball positioning device according to claim 9, characterized in that, The lithium battery (7) is disposed between the two separators.

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