Data acquisition accessory for racket

Abstract

The utility model relates to a data acquisition accessory for a racket, which comprises a data acquisition circuit board arranged on the racket, and an I MU attitude sensor circuit, a charging interface circuit, a filter circuit, an on-off control circuit and a power supply circuit are integrated on the data acquisition circuit board; a communication module is configured on the I MU attitude sensor circuit; the charging interface circuit is connected with the I MU attitude sensor circuit through the filter circuit, and the on-off control circuit and the power supply circuit are both connected with the I MU attitude sensor circuit. According to the data acquisition accessory for the racket, the I MU attitude sensor circuit is used for acquiring action data such as three-axis acceleration, angular velocity and three-dimensional track of actions of an athlete in the training or competition process, the action data can be transmitted through the communication module, the action condition of the athlete can be known conveniently and timely, and the training effect can be improved.

Description

Technical Field

[0001] The utility model relates to sports equipment, in particular to a data collection accessory for a racket. Background Art

[0002] Table tennis, known as the "national ball," is a popular ball sport worldwide. Traditional table tennis rackets, consisting of a base, rubber, and sponge, are limited in functionality and fail to provide movement data during training and competition, leading to limited training. Utility Model Content

[0003] The utility model provides a data collection accessory for a racket, which can obtain action data during training and competition.

[0004] The utility model provides the following technical solution for solving the above-mentioned technical problems: a data acquisition accessory for a racket, comprising a data acquisition circuit board mounted on the racket, the data acquisition circuit board integrating an IMU attitude sensor circuit, a charging interface circuit, a filter circuit, an on-off control circuit, and a power supply circuit; the IMU attitude sensor circuit is configured with a communication module; the charging interface circuit is connected to the IMU attitude sensor circuit via the filter circuit, and the on-off control circuit and the power supply circuit are both connected to the IMU attitude sensor circuit.

[0005] On the basis of the above technical solution, the present invention can also be improved as follows.

[0006] Furthermore, the communication module is specifically a wireless communication module.

[0007] Furthermore, the wireless communication module is specifically a Bluetooth module.

[0008] Furthermore, the IMU attitude sensor circuit and the communication module are integrated together to form an acquisition and transmission module, and the model of the acquisition and transmission module is I M948.

[0009] Furthermore, the charging interface circuit includes:

[0010] 6pin Type-C port, its two GND pins are grounded, and its two VBUS pins are interconnected;

[0011] A second resistor, one end of which is connected to the CC1 pin of the 6pin Type-C port, and the other end of which is grounded;

[0012] A third resistor, one end of which is connected to the CC2 pin of the 6pin Type-C port, and the other end of which is grounded.

[0013] Furthermore, the model of the 6pin Type-C port is HC-AA0B010-158.

[0014] Furthermore, the charging interface circuit includes a 6pin Type-C port; the filtering circuit includes:

[0015] an electrostatic diode, one end of which is connected to the VBUS pin of the 6pin Type-C port and the other end of which is grounded;

[0016] a first capacitor connected in parallel across the electrostatic diode;

[0017] A second capacitor, one end of which is connected to the VBUS pin of the 6pin Type-C port and the VBUS pin of the acquisition and transmission module, and the other end of which is grounded;

[0018] A fourth capacitor has one end connected to the VDDIO pin of the acquisition and transmission module and the other end grounded.

[0019] Furthermore, the on-off control circuit includes:

[0020] A first resistor, one end of which is connected to the KEY pin of the acquisition and transmission module;

[0021] A switch has one end connected to the other end of the first resistor and the other end grounded.

[0022] Furthermore, the power supply circuit includes:

[0023] A lithium battery, the negative electrode of which is grounded, and the positive electrode of which is connected to the VBAT pin of the acquisition and transmission module;

[0024] a fifth capacitor, one end of which is connected to the positive electrode of the lithium battery and the other end of which is grounded;

[0025] A third capacitor has one end connected to the positive electrode of the lithium battery and the other end grounded.

[0026] Furthermore, the data acquisition circuit board is detachably installed in the handle of the racket.

[0027] The beneficial effects of the present invention are as follows: the data acquisition accessory for a racket of the present invention utilizes an IMU posture sensor circuit to collect motion data such as three-axis acceleration, angular velocity, and three-dimensional trajectory of an athlete's motion during training or competition, and the motion data can be transmitted through a communication module, making it convenient to timely understand the athlete's motion status and helping to improve the training effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1This is a circuit structure diagram of a data acquisition circuit board in a data acquisition accessory for a racket in the utility model;

[0029] Figure 2 This is the circuit schematic diagram of the data acquisition circuit board. DETAILED DESCRIPTION

[0030] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0031] A data acquisition accessory for a racket, comprising a data acquisition circuit board mounted on the racket; Figure 1 As shown, the data acquisition circuit board integrates an IMU attitude sensor circuit, a charging interface circuit, a filtering circuit, an on-off control circuit, and a power supply circuit; the IMU attitude sensor circuit is configured with a communication module; the charging interface circuit is connected to the IMU attitude sensor circuit through the filtering circuit, and the on-off control circuit and the power supply circuit are both connected to the IMU attitude sensor circuit.

[0032] The utility model discloses a data acquisition accessory for a racket, which uses an IMU attitude sensor circuit to collect motion data such as three-axis acceleration, angular velocity, and three-dimensional trajectory of athletes during training or competition, and can transmit the motion data through a communication module, making it convenient to timely understand the athletes' motion status and helping to improve training effects.

[0033] In this specific embodiment: the communication module is specifically a wireless communication module; preferably, the wireless communication module is specifically a Bluetooth module. The IMU attitude sensor circuit and the communication module are integrated together to form an acquisition and transmission module U1, such as Figure 2 As shown, the model of the acquisition and transmission module U1 is IM948.

[0034] The acquisition and transmission module U1 collects data such as three-axis acceleration, angular velocity, and three-dimensional trajectory. With the addition of a Bluetooth chip, it can collect real-time swing action data and transmit it to external terminals such as mobile phones and computers. In this specific embodiment: Figure 2 As shown, the charging interface circuit includes:

[0035] 6p i nType-C port U2, its two GND pins are grounded, and its two VBUS pins are interconnected;

[0036] A second resistor R2, one end of which is connected to the CC1 pin of the 6pin Type-C port U2, and the other end of which is grounded;

[0037] A third resistor R3 has one end connected to the CC2 pin of the 6pin Type-C port U2 and the other end grounded.

[0038] Preferably, the model of the 6pin Type-C port U2 is HC-AA0B010-158.

[0039] The data acquisition accessory for a racket of the utility model has a rechargeable function, thereby avoiding the trouble caused by frequent battery replacement.

[0040] In this specific embodiment: Figure 2 As shown, the charging interface circuit includes a 6pin Type-C port U2; the filtering circuit includes:

[0041] an electrostatic diode F, one end of which is connected to the VBUS pin of the 6pin Type-C port U2, and the other end of which is grounded;

[0042] A first capacitor C1 connected in parallel across the electrostatic diode F;

[0043] A second capacitor C2, one end of which is connected to the VBUS pin of the 6pin Type-C port U2 and the VBUS pin of the acquisition and transmission module U1, and the other end of which is grounded;

[0044] A fourth capacitor C4 has one end connected to the VDDIO pin of the acquisition and transmission module U1 and the other end grounded.

[0045] Specifically, the filter circuit is used for filtering to ensure charging safety.

[0046] In this specific embodiment: Figure 2 As shown, the on-off control circuit includes:

[0047] A first resistor R1, one end of which is connected to the KEY pin of the acquisition and transmission module U1;

[0048] The switch K has one end connected to the other end of the first resistor R1 and the other end grounded.

[0049] Specifically, the data acquisition circuit board is controlled to work or stop working by the switch K, which is convenient for use.

[0050] In this specific embodiment: Figure 2 As shown, the power supply circuit includes:

[0051] A lithium battery B, with its negative electrode grounded and its positive electrode connected to the VBAT pin of the acquisition and transmission module U1;

[0052] a fifth capacitor C5, one end of which is connected to the positive electrode of the lithium battery B, and the other end of which is grounded;

[0053] The third capacitor C3 has one end connected to the positive electrode of the lithium battery B and the other end grounded.

[0054] In this embodiment, the data acquisition circuit board is detachably mounted in the handle of the racket. The detachable accessory is mounted at the end of the handle without damaging the original structure of the racket, fitting the racket's shape, and achieving non-invasive data acquisition.

[0055] This new data acquisition accessory for tennis rackets features a housing designed to mirror the shape of the racket handle. It's 3D-printed from resin and fixed to the racket's exterior. This preserves the racket's original feel while preventing the intrusiveness of sports monitoring equipment. This makes training more scientific and personalized, significantly improving its relevance and efficiency. The accessory's detachable and rechargeable features ensure flexibility and convenience, reducing the difficulty and environmental dependency of collecting high-precision data.

[0056] This utility model can be used to collect real-time motion data from table tennis players and wirelessly transmit it to mobile devices, enabling real-time analysis for motion monitoring and technical feedback. It can also be widely used in table tennis training centers, sports schools, and for self-training by individual athletes, particularly those seeking to enhance training effectiveness through technological means. Furthermore, it has the potential to be expanded to other ball and weapon sports training, such as tennis and badminton.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A data collection accessory for a racket, characterized in that: It includes a data acquisition circuit board installed on the racket, on which an IMU attitude sensor circuit, a charging interface circuit, a filtering circuit, an on-off control circuit, and a power supply circuit are integrated; the IMU attitude sensor circuit is configured with a communication module; the charging interface circuit is connected to the IMU attitude sensor circuit through the filtering circuit, and the on-off control circuit and the power supply circuit are both connected to the IMU attitude sensor circuit.

2. The data acquisition accessory for a racket according to claim 1, characterized in that: The communication module is specifically a wireless communication module.

3. The data acquisition accessory for a racket according to claim 2, characterized in that: The wireless communication module is specifically a Bluetooth module.

4. The data acquisition accessory for a racket according to claim 3, characterized in that: The IMU attitude sensor circuit and the communication module are integrated together to form an acquisition and transmission module, and the model of the acquisition and transmission module is IM948.

5. The data acquisition accessory for a racket according to claim 1, characterized in that: The charging interface circuit comprises: 6-pin Type-C port, its two GND pins are grounded, and its two VBUS pins are interconnected; A second resistor, one end of which is connected to the CC1 pin of the 6-pin Type-C port, and the other end of which is grounded; A third resistor has one end connected to the CC2 pin of the 6-pin Type-C port and the other end connected to the ground.

6. The data acquisition accessory for a racket according to claim 5, characterized in that: The model of the 6-pin Type-C port is HC-AA0B010-158.

7. The data acquisition accessory for a racket according to claim 4, characterized in that: The charging interface circuit includes a 6-pin Type-C port; The filtering circuit comprises: An electrostatic diode, one end of which is connected to the VBUS pin of the 6-pin Type-C port, and the other end of which is grounded; A first capacitor connected in parallel across the electrostatic diode; A second capacitor, one end of which is connected to the VBUS pin of the 6-pin Type-C port and the VBUS pin of the acquisition and transmission module, and the other end of which is grounded; A fourth capacitor has one end connected to the VDDIO pin of the acquisition and transmission module and the other end connected to the ground.

8. The data acquisition accessory for a racket according to claim 4, characterized in that: The on-off control circuit comprises: A first resistor, one end of which is connected to the KEY pin of the acquisition and transmission module; A switch has one end connected to the other end of the first resistor and the other end grounded.

9. The data acquisition accessory for a racket according to claim 4, characterized in that: The power supply circuit comprises: A lithium battery, a negative electrode of which is grounded, and a positive electrode of which is connected to the VBAT pin of the acquisition and transmission module; a fifth capacitor, one end of which is connected to the positive electrode of the lithium battery and the other end of which is grounded; The third capacitor has one end connected to the positive electrode of the lithium battery and the other end grounded.

10. The data acquisition accessory for a racket according to claim 1, characterized in that: The data acquisition circuit board is detachably installed in the handle of the racket.

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