Baseball motion parameter real-time monitoring system
By integrating a nine-axis inertial measurement unit and a wireless transmission module with TDMA protocol into the baseball, the problems of environmental interference and high cost in traditional baseball motion parameter measurement are solved, enabling high-precision, real-time motion data acquisition and analysis, and improving the scientific nature and reliability of training and games.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN UNIV
- Filing Date
- 2025-04-24
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional methods for measuring baseball parameters are susceptible to environmental interference, and the equipment is complex and expensive, making it difficult to meet the high precision and real-time requirements of training and game analysis.
Employing a nine-axis inertial measurement unit, a dynamic integral reset processing unit, a data preprocessing unit, a wireless transmission module, and a wireless charging receiver module, combined with the TDMA protocol, it achieves high-precision acquisition, real-time processing, and stable transmission of baseball motion parameters. It is built into the baseball and supports wireless charging.
It achieves high-precision acquisition, real-time processing, and stable transmission of baseball motion parameters, improving the scientific nature of training and the ability to support game data. At the same time, it is safe, reliable, and easy to use, and is suitable for a variety of scenarios.
Smart Images
Figure CN224113250U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of intelligent sports equipment technology, specifically a real-time monitoring system for baseball motion parameters. Background Technology
[0002] In baseball training and game analysis, obtaining parameters such as the ball's release speed, angle, spin rate, and trajectory is crucial for improving athlete training and formulating tactics. Traditional measurement methods, such as optical tracking, suffer from drawbacks such as susceptibility to environmental interference, complex equipment, and high costs, making them difficult to meet practical needs. Utility Model Content
[0003] The purpose of this invention is to provide a real-time monitoring system for baseball motion parameters. This system achieves real-time acquisition of motion parameters from multiple devices through a nine-axis inertial measurement unit and an improved TDMA protocol. Combined with a six-degree-of-freedom trajectory model with aerodynamic compensation in the data preprocessing unit, it achieves a battery life of >8 hours with the support of a wireless charging receiver module. In actual tests, the release speed measurement error is ≤1.2%, and the rotation speed accuracy is ±5rpm. It can realize high-precision acquisition, real-time processing, stable transmission, and intelligent analysis of baseball motion parameters, improving the scientific nature of training and the ability to support game data. At the same time, it is safe, reliable, and easy to use.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A real-time monitoring system for baseball motion parameters includes a nine-axis inertial measurement unit (IMU), a dynamic integral reset processing unit, a data preprocessing unit, a wireless transmission module, a wireless charging receiver module for power supply, a wireless receiving module, a data processing unit, and a user terminal. The nine-axis IMU, dynamic integral reset processing unit, data preprocessing unit, wireless transmission module, and wireless charging receiver module are integrated within the baseball. The nine-axis IMU includes a three-axis accelerometer, a three-axis gyroscope, and a three-axis magnetometer for collecting the baseball's acceleration, angular velocity, and magnetic field strength. The dynamic integral reset processing unit is connected to the nine-axis IMU and is used to reset the initial integral when the detected acceleration value exceeds 20g. Initial conditions; the nine-axis inertial measurement unit, data preprocessing unit, and wireless transmission module are connected in sequence, used to send the collected baseball data to the data preprocessing unit for data preprocessing, and the wireless transmission module sends the preprocessed data to the wireless receiving module; the wireless charging receiving module is connected to the nine-axis inertial measurement unit, dynamic integration reset processing unit, data preprocessing unit, and wireless transmission module respectively; the wireless receiving module is connected to the wireless transmission module and data processing unit respectively, used to receive the preprocessed data and send it to the data processing unit for data processing; the user terminal is connected to the data processing unit, used to display the processed baseball motion parameters to the user.
[0006] Furthermore, the sampling frequency of the nine-axis inertial measurement unit is ≥100Hz; the measurement accuracy of the three-axis accelerometer is ±0.5%FS; and the measurement accuracy of the gyroscope is ±0.1%FS.
[0007] Furthermore, the data preprocessing process of the data preprocessing unit includes noise removal and calibration.
[0008] Furthermore, both the wireless transmission module and the wireless receiving module support the TDMA protocol and operate in the 2.400-2.483GHz frequency band.
[0009] Furthermore, each baseball's wireless transmission module is equipped with a unique identifier.
[0010] Furthermore, the wireless charging receiver module includes a wireless charging sensor, a circuit board, and a battery connected in sequence, and is charged by an external wireless charging transmitter.
[0011] Furthermore, the wireless charging receiver module is equipped with a temperature protection unit to automatically cut off power when the temperature exceeds 60°C.
[0012] After adopting the above technical solution, the present invention has the following beneficial effects:
[0013] 1. This utility model discloses a real-time monitoring system for baseball motion parameters, achieving high-precision motion data acquisition. Employing a nine-axis inertial measurement unit (including a three-axis accelerometer, a three-axis gyroscope, and a three-axis magnetometer), it can comprehensively and accurately acquire data on the acceleration, angular velocity, and magnetic field strength of the baseball, meeting the refined requirements of motion analysis. Furthermore, the sampling frequency is ≥100Hz, with accelerometer accuracy ±0.5%FS and gyroscope accuracy ±0.1%FS, ensuring real-time and accurate data acquisition, making it suitable for monitoring high-speed baseball motion.
[0014] 2. The present invention provides a real-time monitoring system for baseball motion parameters that achieves dynamic integral optimization and improves data reliability: through the dynamic integral reset processing unit, the initial conditions of integration are automatically reset when the acceleration exceeds 20g, avoiding the accumulation of integral errors and improving the accuracy of motion trajectory calculation. It is especially suitable for instantaneous high acceleration scenarios such as baseball hitting and throwing.
[0015] 3. This utility model discloses a real-time baseball motion parameter monitoring system that achieves real-time data processing and low-latency transmission: The data preprocessing unit performs noise reduction and calibration on the raw data to reduce environmental interference and improve data quality. The wireless transmission module and wireless receiving module adopt the TDMA protocol, operating in the 2.400-2.483GHz frequency band, ensuring stability and low latency during parallel transmission by multiple devices, meeting real-time monitoring requirements. The wireless transmission module has a unique identifier to easily distinguish data from different baseballs, making it suitable for team training or simultaneous monitoring of multiple balls.
[0016] 4. This utility model provides a real-time baseball motion parameter monitoring system that integrates wireless charging and safety protection: the wireless charging receiver module uses contactless charging, avoiding equipment damage caused by frequent disassembly of the baseball and extending its service life. A built-in temperature protection unit automatically cuts off power when the temperature exceeds 60℃, preventing battery overheating and potential safety hazards, thus improving system reliability.
[0017] 5. This utility model provides a real-time baseball motion parameter monitoring system that achieves user-friendliness and diverse applications: the data processing unit, combined with the user terminal, can display the baseball's speed, rotation angle, trajectory, and other motion parameters in real time, facilitating athletes and coaches to adjust training strategies immediately. Multiple components are built into the baseball, resulting in a compact structure that does not affect the baseball's normal use, making it suitable for various scenarios such as games and training. Therefore, this utility model achieves high-precision acquisition, real-time processing, stable transmission, and intelligent analysis of baseball motion parameters, improving the scientific nature of training and the ability to support game data, while also being safe, reliable, and easy to use. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the structure of the nine-axis inertial measurement unit of this utility model;
[0020] Figure 3 This is a schematic diagram of the structure of the wireless charging receiver module of this utility model.
[0021] The reference numerals in the figure are as follows:
[0022] 1. Nine-axis inertial measurement unit; 11. Three-axis accelerometer; 12. Three-axis gyroscope; 13. Three-axis magnetometer; 2. Dynamic integration reset processing unit; 3. Data preprocessing unit; 4. Wireless transmission module; 5. Wireless charging receiver module; 51. Wireless charging sensor; 52. Circuit board; 53. Battery; 54. Temperature protection unit; 6. Wireless receiver module; 7. Data processing unit; 8. User terminal. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0024] Please see Figures 1 to 3A real-time monitoring system for baseball motion parameters includes a nine-axis inertial measurement unit 1, a dynamic integration reset processing unit 2, a data preprocessing unit 3, a wireless transmission module 4, a wireless charging receiver module 5 for power supply, a wireless receiving module 6, a data processing unit 7, and a user terminal 8. The nine-axis inertial measurement unit 1, dynamic integration reset processing unit 2, data preprocessing unit 3, wireless transmission module 4, and wireless charging receiver module 5 are integrated within the baseball. The nine-axis inertial measurement unit 1 includes a three-axis accelerometer 11, a three-axis gyroscope 12, and a three-axis magnetometer 13, used to collect the baseball's acceleration, angular velocity, and magnetic field strength. The dynamic integration reset processing unit 2 is connected to the nine-axis inertial measurement unit 1 and is used to reset the initial integration conditions when the detected acceleration value exceeds 20g. The nine-axis inertial measurement unit 1, data preprocessing unit 3, and wireless transmission module 4 are connected in sequence. The former sends the collected baseball data to the data preprocessing unit 3 for preprocessing, and the latter sends the preprocessed data to the wireless receiving module 6 via the wireless transmission module 4. The wireless charging receiving module 5 is connected to the nine-axis inertial measurement unit 1, dynamic integration reset processing unit 2, data preprocessing unit 3, and wireless transmission module 4. The wireless receiving module 6 is connected to the wireless transmission module 4 and data processing unit 7, receiving the preprocessed data and sending it to the data processing unit 7 for further processing. The user terminal 8 is connected to the data processing unit 7 and displays the processed baseball motion parameters to the user. The nine-axis inertial measurement unit 1 can be a TDK InvenSense. The ICM-20948 module integrates a three-axis accelerometer 11, a three-axis gyroscope 12, and a three-axis magnetometer 13; the dynamic integration reset processing unit 2 can use an STM32F407VGT6 microcontroller with a built-in threshold comparison algorithm; the data preprocessing unit 3 can use a Xilinx Artix-7 FPGA to implement real-time filtering; the wireless transmission module 4 can use a Nordic nRF52840 chip, supporting Bluetooth 5.0 and TDMA protocols; the wireless charging receiver module 5 can use a Qi standard receiving coil (model TIBQ51050B) and a lithium polymer battery (3.7V / 200mAh); the wireless receiver module 6 can be equipped with a receiver end with an nRF52840 chip; the data processing unit 7 can be equipped with an Intel NUC11 mini-host to run algorithms; and the user terminal 8 is compatible with customized iOS / Android apps.
[0025] like Figure 1 and Figure 2 As shown, the sampling frequency of the nine-axis inertial measurement unit 1 is ≥100Hz; the measurement accuracy of the three-axis accelerometer 11 is ±0.5%FS; and the measurement accuracy of the gyroscope is ±0.1%FS.
[0026] like Figure 1As shown, the data preprocessing process of the data preprocessing unit 3 includes noise removal and calibration.
[0027] like Figure 1 As shown, both the wireless transmission module 4 and the wireless receiving module 6 support the TDMA protocol and operate in the 2.400-2.483GHz frequency band.
[0028] like Figure 1 As shown, each baseball's wireless transmission module 4 is equipped with a unique identifier.
[0029] like Figure 1 and Figure 3 As shown, the wireless charging receiver module 5 includes a wireless charging sensor 51, a circuit board 52, and a battery 53 connected in sequence, and is charged by an external wireless charging transmitter.
[0030] like Figure 1 and Figure 3 As shown, the wireless charging receiver module 5 is equipped with a temperature protection unit 54, which is used to automatically cut off the power when the temperature exceeds 60°C.
[0031] It is understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.
[0032] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.
[0033] It is further understood that the terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation.
[0034] It can be further understood that, unless otherwise specified, "connection" includes both direct connections where no other components exist between the two parties and indirect connections where other components exist between them.
[0035] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.
[0036] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.
[0037] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A real-time monitoring system for baseball motion parameters, characterized in that: The system includes a nine-axis inertial measurement unit (1), a dynamic integration reset processing unit (2), a data preprocessing unit (3), a wireless transmission module (4), a wireless charging receiver module (5) for power supply, a wireless receiving module (6), a data processing unit (7), and a user terminal (8). The nine-axis inertial measurement unit (1), dynamic integration reset processing unit (2), data preprocessing unit (3), wireless transmission module (4), and wireless charging receiver module (5) are built into the baseball. The nine-axis inertial measurement unit (1) includes a three-axis accelerometer (11), a three-axis gyroscope (12), and a three-axis magnetometer (13) for collecting the acceleration, angular velocity, and magnetic field strength of the baseball. The dynamic integration reset processing unit (2) is connected to the nine-axis inertial measurement unit (1) and is used to reset the initial integration conditions when the detected acceleration value exceeds 20g. The nine-axis inertial measurement unit (1), the data preprocessing unit (3), and the wireless transmission module (4) are connected in sequence to send the collected baseball data to the data preprocessing unit (3) for data preprocessing, and the wireless transmission module (4) sends the preprocessed data to the wireless receiving module (6). The wireless charging receiving module (5) is connected to the nine-axis inertial measurement unit (1), the dynamic integration reset processing unit (2), the data preprocessing unit (3), and the wireless transmission module (4) respectively. The wireless receiving module (6) is connected to the wireless transmission module (4) and the data processing unit (7) respectively to receive the preprocessed data and send it to the data processing unit (7) for data processing. The user terminal (8) is connected to the data processing unit (7) to display the processed baseball motion parameters to the user.
2. The real-time monitoring system for baseball motion parameters as described in claim 1, characterized in that: The sampling frequency of the nine-axis inertial measurement unit (1) is ≥100Hz; the measurement accuracy of the three-axis accelerometer (11) is ±0.5%FS; and the measurement accuracy of the gyroscope is ±0.1%FS.
3. The real-time monitoring system for baseball motion parameters as described in claim 1, characterized in that: The data preprocessing process of the data preprocessing unit (3) includes noise removal and calibration.
4. The real-time monitoring system for baseball motion parameters as described in claim 1, characterized in that: Both the wireless transmission module (4) and the wireless receiving module (6) support the TDMA protocol and operate in the frequency band of 2.400-2.483GHz.
5. The real-time monitoring system for baseball motion parameters as described in claim 1, characterized in that: Each baseball's wireless transmission module (4) is equipped with a unique identifier.
6. The real-time monitoring system for baseball motion parameters as described in claim 1, characterized in that: The wireless charging receiver module (5) includes a wireless charging sensor (51), a circuit board (52) and a battery (53) connected in sequence, and is charged by an external wireless charging transmitter.
7. The real-time monitoring system for baseball motion parameters as described in claim 1, characterized in that: The wireless charging receiver module (5) is equipped with a temperature protection unit (54) for automatically cutting off power when the temperature exceeds 60°C.