Virtual racket positioning and tracking system applied to virtual reality tennis training

Abstract

The invention discloses a virtual racket positioning and tracking system applied to virtual reality tennis training. The virtual racket positioning and tracking system comprises a racket, a tracking module, a positioning module and intelligent equipment, the tracking module comprises a first wireless communication unit, a signal processing unit and a racket posture detection unit; the positioning module comprises a second wireless communication unit and a data acquisition and processing unit, the second wireless communication unit is in wireless communication connection with the first wireless communication unit, and the data acquisition and processing unit is in communication connection with the intelligent equipment; the racket posture detection unit detects a posture signal of the racket; the second wireless communication unit obtains a positioning signal of the racket through wireless communication with the first wireless communication unit; the data collecting and processing unit fuses the received posture signal and the positioning signal into racket data and transmits the racket data to the intelligent device, and the intelligent device displays a corresponding content scene according to the racket data. Therefore, the racket can be accurately tracked, the immersion feeling of tennis training is improved, the cost is low, and implementation is easy.

Description

Technical Field

[0001] The present invention relates to the field of virtual reality technology, and in particular to a virtual racket positioning and tracking system used in virtual reality tennis training. Background Art

[0002] With the development of science and technology, many simulation devices are combined with virtual reality devices to enhance the immersion of training in running projects, such as tennis training, where the tennis training scene includes trainers, rackets, courts, tennis balls, etc. In the prior art, virtual reality devices are usually positioned with positioning devices on the simulation devices, or additional landmark objects are set on the simulation devices for positioning, resulting in high costs and unchanged operations, such as the positioning of rackets.

[0003] In view of the above technical problems, technical personnel in this field urgently need to design a racket positioning system to solve the above technical problems. Summary of the invention

[0004] In view of the above-mentioned shortcomings, the technical problem to be solved by the present invention is to provide a virtual racket positioning and tracking system for virtual reality tennis training, which can accurately track the racket to enhance the immersion of tennis training and has low cost.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: A virtual racket positioning and tracking system for virtual reality tennis training, comprising a racket, a tracking module arranged on the racket, a positioning module arranged on a field, and an intelligent device communicatively connected to the positioning module; the tracking module comprises a first wireless communication unit, a signal processing unit and a racket posture detection unit, the racket posture detection unit is electrically connected to the signal processing unit, and the signal processing unit is electrically connected to the first wireless communication unit; the positioning module comprises an electrically connected second wireless communication unit and a data acquisition processing unit, the second wireless communication unit is wirelessly connected to the first wireless communication unit, and the data acquisition processing unit is communicatively connected to the intelligent device; the racket The posture detection unit is used to detect the posture signal of the racket. The posture signal is transmitted to the first wireless communication unit after being processed by the signal processing unit. The first wireless communication unit transmits the posture signal to the data acquisition and processing unit through the second wireless communication unit. The second wireless communication unit obtains the positioning signal of the racket through wireless communication with the first wireless communication unit, and transmits the positioning signal to the data acquisition and processing unit. The data acquisition and processing unit fuses the received posture signal and the positioning signal to form racket data, and transmits the racket data to the smart device. The smart device is used to display the corresponding content scene according to the received racket data.

[0006] Preferably, the first wireless communication unit is a Bluetooth transmitter; the second wireless communication unit includes at least three Bluetooth receivers, and all the Bluetooth receivers are arranged at three different locations in the venue.

[0007] Preferably, the racket posture detection unit includes an acceleration sensor, a gyroscope sensor and a piezoelectric sensor, the acceleration sensor is used to detect the swing acceleration of the racket, the gyroscope sensor is used to detect the swing angular velocity of the racket, and the piezoelectric sensor is used to detect whether the racket hits the ball.

[0008] Preferably, the racket includes a racket frame and a racket handle, the acceleration sensor, the gyroscope sensor and the Bluetooth transmitter are arranged on the racket handle, and the piezoelectric sensor is arranged on the racket frame.

[0009] Preferably, a power supply unit is further provided in the handle, and the power supply unit includes a rechargeable battery and a wireless charging unit which are electrically connected, and the wireless charging unit is charged by a wireless charger.

[0010] Preferably, a power indicator light is provided on the handle, and a power detection unit electrically connected to the rechargeable battery and the power indicator light is provided inside the handle.

[0011] A preferred embodiment is that the positioning module also includes a camera, which is electrically connected to the data acquisition and processing unit; the camera is used to acquire images of the current scene in real time and transmit them to the data acquisition and processing unit; the data acquisition and processing unit is used to analyze the images from the camera, obtain object feature information and background feature information in the scene, and fuse the object feature information and background feature information in the scene with the racket data to obtain three-dimensional coordinates and posture information in the current scene, and transmit the fused data to the smart device, and the smart device is used to display the corresponding content scene according to the received data.

[0012] In a preferred embodiment, the smart device is a head mounted display device, and a posture correction unit is provided on the head mounted display device, and the posture correction unit is used to display a standard tennis posture in a content scene.

[0013] Preferably, the positioning device further comprises a mobile frame arranged one-to-one with the Bluetooth receiver, and the Bluetooth receiver is mounted on the mobile frame.

[0014] After adopting the above technical solution, the beneficial effects of the present invention are: The virtual racket positioning and tracking system for virtual reality tennis training of the present invention comprises a racket, a tracking module arranged on the racket, a positioning module arranged on the field, and an intelligent device communicatively connected to the positioning module; the tracking module comprises a first wireless communication unit, a signal processing unit and a racket posture detection unit; the positioning module comprises an electrically connected second wireless communication unit and a data acquisition processing unit, the second wireless communication unit is wirelessly connected to the first wireless communication unit, and the data acquisition processing unit is communicatively connected to the intelligent device; wherein the racket posture detection unit is used to detect the posture signal of the racket, the posture signal is transmitted to the first wireless communication unit after being processed by the signal processing unit, and the first wireless communication unit transmits the posture signal to the data acquisition processing unit through the second wireless communication unit; wherein the second wireless communication unit obtains the positioning signal of the racket through wireless communication with the first wireless communication unit, and transmits the positioning signal to the data acquisition processing unit; wherein the data acquisition processing unit fuses the received posture signal and the positioning signal to form racket data, and transmits the racket data to the intelligent device, and the intelligent device is used to display the corresponding content scene according to the received racket data. It can be seen that the virtual racket positioning and tracking system of the present invention can accurately track the racket to enhance the immersive feeling of tennis training, and it is low-cost and easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a principle block diagram of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention; In the figure: 1-court, 2-racket, 20-racket frame, 21-racket handle, 3-mobile frame, 4-positioning module, 40-Bluetooth receiver, 5-tracking module. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0017] like Figure 1 and Figure 2 As shown, a virtual racket positioning and tracking system used for virtual reality tennis training includes a racket 2, a tracking module 5 arranged on the racket 2, a positioning module 4 arranged on the venue 1, and an intelligent device connected to the positioning module 4 for communication.

[0018] The tracking module 5 includes a first wireless communication unit, a signal processing unit and a racket posture detection unit, the racket posture detection unit is electrically connected to the signal processing unit, and the signal processing unit is electrically connected to the first wireless communication unit; The positioning module 4 includes a second wireless communication unit and a data acquisition processing unit which are electrically connected, the second wireless communication unit is wirelessly connected to the first wireless communication unit, and the data acquisition processing unit is communicatively connected to the smart device; The racket posture detection unit is used to detect the posture signal of the racket. The posture signal is transmitted to the first wireless communication unit after being processed by the signal processing unit. The first wireless communication unit transmits the posture signal to the data acquisition processing unit through the second wireless communication unit; the second wireless communication unit obtains the positioning signal of the racket 2 through wireless communication with the first wireless communication unit, and transmits the positioning signal to the data acquisition processing unit; the data acquisition processing unit fuses the received posture signal and positioning signal to form racket data, and transmits the racket data to the smart device, and the smart device is used to display the corresponding content scene according to the received racket data. It can be seen that the virtual racket positioning tracking system of the present invention can accurately track the racket 2 to enhance the immersion of tennis training, and it is low-cost and easy to implement.

[0019] In some embodiments of the present invention, the first wireless communication unit is a Bluetooth transmitter; the second wireless communication unit includes at least three Bluetooth receivers 40 , and all Bluetooth receivers 40 are disposed at three different locations of the venue 1 .

[0020] The racket posture detection unit in the present invention comprises an acceleration sensor, a gyroscope sensor and a piezoelectric sensor. The acceleration sensor is used to detect the swing acceleration of the racket, the gyroscope sensor is used to detect the swing angular velocity of the racket, and the piezoelectric sensor is used to detect whether the racket hits the ball.

[0021] The racket 2 in the present invention includes a racket frame 20 and a racket handle 21, an acceleration sensor, a gyroscope sensor and a Bluetooth transmitter are arranged on the racket handle 21, and a piezoelectric sensor is arranged on the racket frame 20. In a preferred embodiment, a power supply unit is also arranged in the racket handle 21, and the power supply unit includes an electrically connected rechargeable battery and a wireless charging unit, and the wireless charging unit is charged by a wireless charger.

[0022] A power indicator light is also provided on the handle 21, and a power detection unit electrically connected to the rechargeable battery and the power indicator light is also provided inside the handle 21. During the use of the racket 2, the power detection unit detects the power of the rechargeable battery in real time. When the power of the rechargeable battery reaches the minimum value, the power detection unit triggers the power indicator light to light up, thereby reminding the tennis trainer.

[0023] In some embodiments of the present invention, the positioning module 4 also includes a camera, which is electrically connected to the data acquisition and processing unit; the camera is used to collect images of the current scene in real time and transmit them to the data acquisition and processing unit; the data acquisition and processing unit block is used to analyze the images from the camera, obtain object feature information and background feature information in the scene, and fuse the object feature information and background feature information in the scene with the racket data, obtain the three-dimensional coordinates and posture information in the current scene, and transmit the fused data to the smart device, which is used to display the corresponding content scene according to the received data.

[0024] The smart device in the present invention may be a head mounted display device, on which a posture correction unit is provided, and the posture correction unit is used to display a standard tennis posture in a content scene, and the posture correction unit is used to remind tennis trainers to correct their posture, thereby improving the training effect.

[0025] In some embodiments of the present invention, the positioning device also includes a mobile frame 3 that is set one-to-one with the Bluetooth receiver 40, and the Bluetooth receiver 40 is installed on the mobile frame 3. For example: if the positioning device includes three Bluetooth receivers 40, it is equipped with three mobile frames 3, and each mobile frame 3 is equipped with a Bluetooth receiver 40. The three mobile frames 3 can be easily moved to three different positions of the venue 1. Specifically, the three positions can be: the two ends of the venue 1 and the middle position of the opposite venue 1. At this time, the racket 2 is positioned using three points. In a preferred embodiment, a locking structure is set at the bottom of each mobile frame 3, and the locking structure can prevent the mobile frame 3 from moving at will, which has affected the precise positioning of the racket 2.

[0026] The virtual racket positioning and tracking system of the present invention locates racket 2 through wireless communication between the first wireless communication unit provided on racket 2 and the second wireless communication unit of positioning module 4, and obtains the positioning signal of racket 2. Specifically, the Bluetooth transmitter on racket 2 communicates with Bluetooth receivers 40 provided at three positions via Bluetooth, and locates the position of racket 2 according to the time of Bluetooth communication, etc.; at the same time, the acceleration sensor, gyroscope sensor and piezoelectric sensor on racket 2 detect the posture signal of racket 2 in real time. After the first wireless communication unit transmits the posture signal to positioning module 4, the data acquisition and processing unit fuses the posture signal and the positioning signal to form racket data, realizes the positioning and tracking of the virtual racket, and enables tennis trainers wearing head-mounted display devices to see the racket in the corresponding content scene, thereby enhancing the sense of immersion.

[0027] The above-described preferred embodiments of the present invention are only intended to limit the present invention. Any modifications made within the spirit and principles of the present invention, as well as improvements to a virtual racket positioning and tracking system for virtual reality tennis training, should be included in the protection scope of the present invention.

Claims

1. A virtual racket positioning and tracking system for virtual reality tennis training, characterized in that: It includes a racket, a tracking module arranged on the racket, a positioning module arranged on the field, and a smart device connected to the positioning module for communication; The tracking module includes a first wireless communication unit, a signal processing unit and a racket posture detection unit, wherein the racket posture detection unit is electrically connected to the signal processing unit, and the signal processing unit is electrically connected to the first wireless communication unit; The positioning module includes a second wireless communication unit and a data acquisition processing unit which are electrically connected, the second wireless communication unit is wirelessly connected to the first wireless communication unit, and the data acquisition processing unit is communicatively connected to the smart device; The racket posture detection unit is used to detect the posture signal of the racket, the posture signal is transmitted to the first wireless communication unit after being processed by the signal processing unit, and the first wireless communication unit transmits the posture signal to the data acquisition processing unit through the second wireless communication unit; The second wireless communication unit acquires the positioning signal of the racket through wireless communication with the first wireless communication unit, and transmits the positioning signal to the data acquisition and processing unit; The data acquisition and processing unit fuses the received posture signal and the positioning signal to form racket data, and transmits the racket data to the smart device, and the smart device is used to display the corresponding content scene according to the received racket data.

2. The virtual racket positioning and tracking system for virtual reality tennis training according to claim 1, characterized in that: The first wireless communication unit is a Bluetooth transmitter; The second wireless communication unit includes at least three Bluetooth receivers, and all of the Bluetooth receivers are arranged at three different locations in the venue.

3. The virtual racket positioning and tracking system for virtual reality tennis training according to claim 2, characterized in that: The racket posture detection unit includes an acceleration sensor, a gyroscope sensor and a piezoelectric sensor. The acceleration sensor is used to detect the swing acceleration of the racket, the gyroscope sensor is used to detect the swing angular velocity of the racket, and the piezoelectric sensor is used to detect whether the racket hits the ball.

4. The virtual racket positioning and tracking system for virtual reality tennis training according to claim 3, characterized in that: The racket comprises a racket frame and a racket handle, the acceleration sensor, the gyro sensor and the Bluetooth transmitter are arranged on the racket handle, and the piezoelectric sensor is arranged on the racket frame.

5. The virtual racket positioning and tracking system for virtual reality tennis training according to claim 4, characterized in that: A power supply unit is also arranged in the handle, and the power supply unit includes a rechargeable battery and a wireless charging unit which are electrically connected, and the wireless charging unit is charged by a wireless charger.

6. The virtual racket positioning and tracking system for virtual reality tennis training according to claim 5, characterized in that: The handle is also provided with a power indicator light, and the handle is also provided with a power detection unit which is electrically connected to the rechargeable battery and the power indicator light respectively.

7. The virtual racket positioning and tracking system for virtual reality tennis training according to any one of claims 1 to 6, characterized in that: The positioning module also includes a camera, and the camera is electrically connected to the data acquisition and processing unit; The camera is used to collect images of the current scene in real time and transmit them to the data acquisition and processing unit; The data acquisition and processing unit block is used to analyze the image from the camera, obtain object feature information and background feature information in the scene, and fuse the object feature information and background feature information in the scene with the racket data, obtain the three-dimensional coordinates and posture information in the current scene, and transmit the fused data to the smart device, which is used to display the corresponding content scene according to the received data.

8. The virtual racket positioning and tracking system for virtual reality tennis training according to claim 7, characterized in that: The smart device is a head mounted display device, and a posture correction unit is arranged on the head mounted display device, and the posture correction unit is used to display a standard tennis posture in a content scene.

9. The virtual racket positioning and tracking system for virtual reality tennis training according to claim 2, characterized in that: The positioning device also includes a moving frame arranged one-to-one with the Bluetooth receiver, and the Bluetooth receiver is installed on the moving frame.

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