阅读说明：本技术 一种可检测飞行轨迹的智能排球 (Intelligent volleyball capable of detecting flight trajectory ) 是由 甄新喜 于 2020-04-07 设计创作，主要内容包括：本发明公开了训练设备技术技术领域的一种可检测飞行轨迹的智能排球,包括排球本体,排球本体的内侧面上粘贴有九轴传感器,九轴传感器电连接在数据输入输出模块上,数据输入输出模块包括运动数据采集模块和无线发射模块,数据采集模块为JY901模块,通过串口通信传送至STM32微控制器,STM32微控制器通过串口通信将数据信号传输给SP3485半双工收发器,SP3485半双工收发器将数据传送至无线发射模块无线发送,可用于模拟排球真实运动轨迹,方便将数据应用于训练,提高训练效果。(The invention discloses an intelligent volleyball capable of detecting flight trajectories, which belongs to the technical field of training equipment and comprises a volleyball body, wherein a nine-axis sensor is pasted on the inner side surface of the volleyball body and electrically connected to a data input and output module, the data input and output module comprises a motion data acquisition module and a wireless transmission module, the data acquisition module is a JY901 module and is transmitted to an STM32 microcontroller through serial port communication, the STM32 microcontroller transmits data signals to an SP3485 half-duplex transceiver through serial port communication, and the SP3485 half-duplex transceiver transmits the data to the wireless transmission module for wireless transmission, so that the intelligent volleyball can be used for simulating the real motion trajectories of the volleyball, the data can be conveniently applied to training, and the training effect.)

1. The utility model provides an intelligent volleyball of detectable flight path, includes the volleyball body, its characterized in that: the inner side surface of the volleyball body is pasted with nine-axis sensors, the nine-axis sensors are electrically connected to a data input/output module, the data input/output module comprises a motion data acquisition module and a wireless transmission module, the data acquisition module is a JY901 module and is transmitted to an STM32 microcontroller through serial port communication, the STM32 microcontroller transmits data signals to an SP3485 half-duplex transceiver through serial port communication, and the SP3485 half-duplex transceiver transmits the data to the wireless transmission module for wireless transmission.

2. The intelligent volleyball capable of detecting flight trajectories according to claim 1, wherein: the SP3485 half-duplex transceiver transmits data to a serial port to be wirelessly transmitted to a computer, and a motion capture software system on the computer calculates and analyzes the data and drives the volleyball model to move through data simulation.

3. The intelligent volleyball capable of detecting flight trajectories according to claim 1, wherein: the nine-axis sensor is powered by a direct-current power supply, and the direct-current power supply is arranged in the nine-axis sensor.

4. The intelligent volleyball capable of detecting flight trajectories according to claim 1, wherein: at least six nine-axis sensors are arranged on the inner side surface, and the six positions are respectively the intersection points of the X, Y, Z axes and the inner side surface by taking the mass center of the volleyball as the origin.

5. The intelligent volleyball capable of detecting flight trajectories according to claim 4, wherein: motion data of the nine-axis sensors at the six positions are collected by a JY901 module and then transmitted to an STM32 microcontroller through serial port communication, the STM32 microcontroller and an SP3485 half-duplex transceiver are also communicated through serial ports, all the SP3485 half-duplex transceivers are connected in series, and the last SP3485 half-duplex transceiver transmits the data to the serial ports to be transmitted in a wireless mode.

6. The intelligent volleyball capable of detecting flight trajectories according to claim 1, wherein: the nine-axis sensor comprises a three-axis gyroscope, a three-axis accelerometer and a three-axis geomagnetic meter which are sequentially arranged.

Technical Field

The invention relates to the technical field of training equipment, in particular to an intelligent volleyball capable of detecting a flight track.

Background

Volleyball sports are widely popularized, the performance of Chinese female volleyball sports is well known in China and praised by people, the conventional volleyball sports training is performed by adopting a conventional training mode, the moving direction of volleyball is recognized and the moving track is sensed through human eyes, and the volleyball is received through the experience of long-term training of people, but the pre-judgment of human eyes has the possibility of delay and insufficient experience, so that the level of the volleyball is difficult to improve when the training reaches a certain degree, for example, the volleyball may generate different moving tracks due to the arm strength of a service person or the relationship between the strength and the direction of the service person, the volleyball needs to be received through the accumulated reaction mode of normal training, the volleyball falls to the ground many times, the reaction speed of your volleyball is slow, and the reaction speed of training may not need long-term training, the training effect cannot be achieved quickly.

Based on the above, the invention designs the intelligent volleyball capable of detecting the flight trajectory to solve the problems.

Disclosure of Invention

The invention aims to provide an intelligent volleyball capable of detecting flight trajectories, and aims to solve the problems that the existing training effect provided by the background technology is low in visualization, poor in data analysis capability and incapable of improving the training effect quickly.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an intelligent volleyball of detectable flight trajectory, includes the volleyball body, it has nine sensors to paste on the medial surface of volleyball body, nine sensors electricity is connected on data input output module, data input output module includes motion data acquisition module and wireless transmission module, data acquisition module is JY901 module, conveys to STM32 microcontroller through serial communication, STM32 microcontroller transmits data signal to SP3485 half-duplex transceiver through serial communication, and SP3485 half-duplex transceiver transmits data to wireless transmission module wireless transmission.

As a further scheme of the invention, the SP3485 half-duplex transceiver transmits data to a serial port to be wirelessly transmitted to a computer, and a motion capture software system on the computer calculates and analyzes the data and drives the volleyball model to move through data simulation. Through wireless transmission, signals can be transmitted in the air through electromagnetic waves, and the movement obstruction to the volleyball is small.

As a further aspect of the present invention, the nine-axis sensor is powered by a dc power source, and the dc power source is disposed in the nine-axis sensor. The direct-current power supply is adopted to supply power, so that the power supply signal is stable, and the influence on volleyball movement is reduced to the maximum extent.

As a further scheme of the present invention, at least six nine-axis sensors are disposed on the inner side surface, and the six positions are respectively the intersection points of the X, Y, Z axes of the volleyball with the centroid of the volleyball as the origin, and the intersection points are symmetric at multiple positions, so that the detection accuracy can be improved, and the influence on the volleyball movement can be reduced as much as possible.

As a further scheme of the invention, the nine-axis sensors at the six positions are all used for collecting motion data by a JY901 module and then are transmitted to an STM32 microcontroller through serial port communication, the STM32 microcontroller and an SP3485 half-duplex transceiver are also communicated through serial ports, all SP3485 half-duplex transceivers are connected in series, and the last SP3485 half-duplex transceiver transmits the data to the serial ports to be transmitted in a wireless mode, so that the signal transmission is more direct and the fidelity is good.

As a further aspect of the present invention, the nine-axis sensor includes a three-axis gyroscope, a three-axis accelerometer, and a three-axis geomagnetism, which are sequentially disposed. The three sensors are stable in fusion method and convenient to calculate, and various nine-axis sensors are available in the market and are convenient to process or purchase.

Compared with the prior art, the invention has the beneficial effects that: the real-time motion attitude diagram of the volleyball is acquired through the nine-axis sensor, the data of the motion attitude diagram is calculated and transmitted through the motion data acquisition module, then is transmitted to a computer through the wireless transmission module on the input/output module 3, the real-time motion attitude diagram is input into a model of the computer, the motion trail of the volleyball is obtained through model simulation, and the training of a trainer such as (ball serving mode training, reaction training and ball receiving mode training) is improved through the analysis of the motion trail of the volleyball.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a diagram illustrating a data transmission structure according to the present invention;

FIG. 3 is a basic principle framework diagram of the strapdown inertial navigation system of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

the device comprises a volleyball body 1, a nine-axis sensor 2 and a data input and output module 3.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides an intelligent volleyball of detectable flight trajectory, including volleyball body 1, it has nine sensors 2 to paste on the medial surface of volleyball body 1, nine sensors 2 electricity is connected on data input output module 3, data input output module includes motion data acquisition module and wireless transmission module, data acquisition module is JY901 module, convey to STM32 microcontroller through serial communication, STM32 microcontroller transmits data signal for SP3485 half-duplex transceiver through serial communication, SP3485 half-duplex transceiver transmits data transfer to wireless transmission module wireless transmission. The wireless transmitting module can be Bluetooth, a real-time motion attitude diagram of the volleyball is acquired through the nine-axis sensor, data of the motion attitude diagram is calculated and transmitted through the motion data acquisition module, the data are transmitted to the computer through the wireless transmitting module on the input/output module 3, the real-time motion attitude diagram is input into a model of the computer, a motion track of the volleyball is obtained through model simulation, and training of a trainer such as (ball serving mode training, reaction training and ball receiving mode training) is improved through analysis of the motion track of the volleyball.

The SP3485 half-duplex transceiver transmits data to a serial port to be wirelessly transmitted to a computer, and a motion capture software system on the computer calculates and analyzes the data and drives the volleyball model to move through data simulation. The nine sensors are powered by a direct current power supply, and the direct current power supply is arranged in the nine sensors. At least six nine-axis sensors are arranged on the inner side face, the six positions are respectively the intersection points of the X, Y, Z axes and the inner side face by taking the center of mass of the volleyball as the original point, the nine-axis sensors at the six positions are all collected by a JY901 module and then transmitted to an STM32 microcontroller through serial port communication, the STM32 microcontroller and the SP3485 half-duplex transceivers are also communicated through serial ports, all the SP3485 half-duplex transceivers are connected in series, and the last SP3485 half-duplex transceiver transmits data to the serial ports to be transmitted wirelessly.

Firstly, a space coordinate system is established for the volleyball court, parameters such as motion acceleration, direction, inclination angle and the like of the nine-axis sensor are captured, and the nine-axis sensor is not influenced by environmental interference, is not afraid of shielding and has high capturing accuracy, and the sampling frequency can reach 1000 times per second or higher. Therefore, the motion attitude data of the volleyball can be captured in real time, and all the motion attitude data can be collected to be used for simulating the space motion trail of the volleyball. The movement track of the ball is corresponding to the position of the ball falling position to calculate the action to be trained and the ball catching key of the athlete.