Basketball shooting training method and training system

Abstract

The present application relates to the technical field of sports training auxiliary equipment, and particularly relates to a basketball shooting training method and a training system, the shooting method comprising determining the relative position of a basket position and a projection device; determining the shooting height and the shooting angle of a basketball when a shooter shoots through the shooting action of the shooter; obtaining a reference shooting trajectory based on the relative position of the basket position and the projection device, and the shooting height and the shooting angle of the basketball when the shooter shoots; and causing the projection device to project a reference shooting projection corresponding to the reference shooting trajectory, which has the beneficial effect that the reference shooting projection and the shooting habit of the shooter have high adaptability, and is conducive to the shooter developing muscle memory of shooting on the premise of not greatly changing the shooting habit of the shooter.

Description

Technical Field

[0001] This invention relates to the technical field of sports training auxiliary equipment, and in particular to a basketball shooting training method and training system. Background Technology

[0002] Basketball shooting is a sport skill that demands a high degree of consistency in movement, requiring the shooter to develop stable muscle memory. Traditional shooting training relies on coaches' visual observation and verbal instructions, which suffers from inaccurate feedback and a lack of quantifiable results. While some electronic training devices have emerged, they generally suffer from the following drawbacks: In basketball shooting training, if a reference trajectory is projected onto the training court using a projection device, a fixed standard parabola is usually projected for trainees to compare with the arc of their own shots. However, standard parabolas are mostly based on ideal models or general parameter settings and do not take into account the individual shooting habits of trainees. Different trainees have significant differences in height, force generation methods, and release angles. The fixed reference trajectory often does not match the trainee's natural shooting motion. To conform to the trajectory, the trainee has to consciously adjust their movements, which not only affects the continuity of the shot but also hinders the formation of muscle memory that suits their individual characteristics.

[0003] Furthermore, common shooting training systems require manual measurement and input of the relative position between the basket and the projection device during setup, making the adjustment process cumbersome and prone to disrupting the training rhythm. While some solutions utilizing camera equipment for shooting analysis can record release parameters, they are primarily used for post-training review and struggle to provide real-time spatial visual guidance tailored to individual shooting characteristics during training. Therefore, how to make the shooting trajectory more closely match the trainee's release height and angle, while simultaneously reducing the operational burden of system setup, is a pressing issue that needs to be addressed. Summary of the Invention

[0004] (a) Technical problems to be solved In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a basketball shooting training method and training system, which solves the technical problems of existing projection-type shooting training devices that mostly project fixed standard trajectories without taking into account the individual shooting height and angle of the trainee, forcing the trainee to deliberately change habitual movements, which is not conducive to the formation of individual muscle memory, and the system setup requires manual calibration of the relative position of the basket and the projection device, which is cumbersome to debug.

[0005] (II) Technical Solution To achieve the above objectives, the main technical solutions adopted by the present invention include: In a first aspect, the present invention provides a basketball shooting training method, implemented based on a projection device capable of projecting a shooting trajectory, the shooting method comprising: S1: Determine the position of the basketball hoop relative to the projection device, and establish a coordinate system with the location of the projection device as the origin. The basketball hoop is located in the first quadrant of the coordinate system. S2: Determine the release height and release angle of the basketball by the shooting action of the shooter in a fixed position; S3: Within the coordinate system, based on the coordinate position of the basket, as well as the height and angle of the basketball's release when the shooter shoots, the reference shooting trajectory is derived. S4: Based on the reference shooting trajectory, the projection device projects the corresponding reference shooting projection.

[0006] In one technical solution of the present invention, S3 specifically includes: Based on the coordinates of the basket, the maximum and minimum release height of the basketball during multiple shots, and the maximum and minimum release angle of the basketball during multiple shots, a reference shooting trajectory is derived.

[0007] In one technical solution of the present invention, the shooting method further includes: S5: Based on the projection device, a reference shooting projection is projected. The shooter performs the shooting action again to determine the release height and release angle of the basketball when the shooter shoots. The result is compared with the release height and release angle of the basketball when shooting under the reference shooting trajectory, and the comparison result is output.

[0008] In one technical solution of the present invention, the shooting method further includes: S6: Based on the projection device, a reference shooting projection is projected, and when the shooter fails to make a valid shot for a predetermined number of consecutive times, S2-S5 are repeated to update the reference projection.

[0009] Secondly, the present invention provides a basketball shooting training system, suitable for performing the basketball shooting training method in the above-mentioned technical solution, the basketball shooting training system comprising: The basketball hoop has location tags inside; Projection device, suitable for projecting shooting trajectories; A camera suitable for scanning the shooting motion of a shooter in a fixed position; The control unit, connected to the location tag, camera, and projection device, is configured as follows: The position of the basketball hoop relative to the projection device is determined by the location label, and a coordinate system is established with the location of the projection device as the origin. The basketball hoop is located in the first quadrant of the coordinate system. By analyzing the shooting motion transmitted by the camera, the release height and angle of the basketball when the shooter shoots are determined. Based on the position of the basketball hoop relative to the projection device, as well as the release height and release angle of the basketball when the shooter shoots, a reference shooting trajectory is derived. Based on the reference shooting trajectory, the projection device projects a corresponding reference shooting projection.

[0010] In one technical solution of the present invention, it further includes: The output device is connected to the control unit and is suitable for outputting comparison results.

[0011] In one embodiment of the present invention, the output device includes a loudspeaker.

[0012] In one technical solution of the present invention, it further includes: The mobile platform forms the standing area for the shooter. The projection device and camera are supported on the mobile platform, and the control unit is integrated inside the mobile platform; the reference shooting trajectory is formed above the standing area.

[0013] In one technical solution of the present invention, the height of the basketball hoop is the sum of the standard basketball hoop height and the height of the standing area.

[0014] In one technical solution of the present invention, the camera is located to the side of the standing area, and the projection device is located behind the standing area.

[0015] (III) Beneficial Effects The beneficial effects of this invention are as follows: In the basketball shooting training method of this invention, since the position of the projection device is fixed, the control unit obtains the spatial coordinates of the basketball hoop relative to the projection device from the position label. The trainee holds the basketball and shoots multiple times. The camera captures the release height and angle of the basketball when it is released, thereby obtaining personalized release parameters, which can reflect the trainee's current force characteristics. Therefore, the subsequently generated reference trajectory is closer to the ball's trajectory after the trainee's natural release.

[0016] Based on the relative position of the basket and the aforementioned individualized release parameters, the control unit uses a projectile motion model to calculate a reference shooting trajectory from the release area to the basket. Because this reference trajectory takes into account the release height and angle of the basketball during the trainee's shot, it offers better traitability for the trainee compared to directly using a standard trajectory. Trainees do not need to make significant changes to their movements when referencing this trajectory, making it easier to develop a stable shooting rhythm and thus solidify muscle memory.

[0017] After receiving the reference trajectory data, the projection device projects a visible trajectory line into the air, such as a parabola composed of continuous light spots or line segments. During subsequent shots, the trainee can directly observe the positional deviation between the actual shot and the projected trajectory. Because the visual feedback is directly superimposed on the real training scenario, the trainee can instantly perceive and correct subtle differences in force or angle, thereby improving the consistency and trajectory of their shot in a relatively short time.

[0018] Because it employs a method of extracting individual shooting parameters from multiple shooting data, the deviation between the projected reference trajectory and the trainee's own movement characteristics is minimal. This results in more natural visual guidance during training, allowing trainees to align the actual ball trajectory with the projected line without repeated trial and error. The integrated position tags within the basket enable the system to quickly enter working mode, minimizing interruptions to training during adjustments. This ensures that the physical calculation input for the reference trajectory more closely matches real shooting conditions, and the trajectory shape more accurately reflects the entry path suitable for the trainee.

[0019] The reference shooting trajectory is generated by taking into account the maximum and minimum shooting height and angle from multiple shooting motions, combined with the relative position of the basket and the projection device. The control unit directs the projection device to project the reference shooting trajectory within a range defined by four parabolas. This ensures a high degree of compatibility between the reference shooting trajectory and the shooter's shooting habits, allowing the shooter to develop muscle memory for shooting without significantly altering their own habits. As for the shooting speed, it can be actively controlled by the shooter. A low shooting speed will cause the ball to land far from the basket, while a high shooting speed will cause the ball to land on the backboard. Therefore, the shooter can autonomously control the shooting speed based on the specific shooting results. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the basketball shooting training method of the present invention; Figure 2 This is a schematic diagram of the reference shooting projection of the present invention; Figure 3 This is a system block diagram of the control unit, camera, projection device, location tag, and output device of the present invention.

[0021] Explanation of reference numerals in the attached figures 1: Basketball hoop; 10: Position labels; 2: Projection device; 3: Camera; 4: Control unit; 5: Output device; 6: Mobile platform. Detailed Implementation

[0022] To better explain and facilitate understanding of this invention, the following description is provided in conjunction with the appendix. Figures 1-3 The present invention will be described in detail through specific embodiments. In this document, directional terms such as "upper" and "lower" are used interchangeably with other directional terms. Figure 1 The orientation is used as a reference.

[0023] Example 1: Reference Figures 1-3The present invention provides a basketball shooting training method based on a projection device 2 capable of projecting a shooting trajectory. The shooting method includes: S1: Determine the position of the basket 1 relative to the projection device 2, and establish a coordinate system with the location of the projection device 2 as the origin. The basket 1 is located in the first quadrant of the coordinate system. S2: By observing the shooting motion of a shooter in a fixed position, determine the release height and angle of the basketball when the shooter shoots. Since the horizontal coordinate of the shooter is fixed when shooting, the horizontal coordinate position of the basketball when it leaves the court will not change significantly under the shooting motion of a shooter. Therefore, we only need to focus on the release height and angle of the basketball when the shooter shoots.

[0024] S3: In the coordinate system, based on the coordinate position of the basket 1, and the height and angle of the basketball's release when the shooter shoots, the reference shooting trajectory is obtained; S3 specifically includes: Based on the coordinate position of the basket 1, the maximum and minimum release height of the basketball during multiple shots by the shooter, and the maximum and minimum release angle of the basketball during multiple shots, a reference shooting trajectory is derived.

[0025] S4: Based on the reference shooting trajectory, the projection device 2 projects the corresponding reference shooting projection, and the projection position is in the air.

[0026] Meanwhile, embodiments of the present invention also provide a basketball shooting training system for implementing the above-described training method. The basketball shooting training system includes: Basketball hoop 1, with location tags 10 inside; Projection device 2 is suitable for projecting the trajectory of a basketball shot; Camera 3 is suitable for scanning the shooting motion of a shooter in a fixed position; Control unit 4, connected to location tag 10, camera 3 and projection device 2, is configured as follows: The position of the basket 1 relative to the projection device 2 is determined by the position label 10, and a coordinate system is established with the position of the projection device 2 as the origin. The basket 1 is located in the first quadrant of the coordinate system. By analyzing the shooting motion transmitted by camera 3, the release height and release angle of the basketball when the shooter shoots are determined. Based on the position of the basket 1 relative to the projection device 2, and the release height and release angle of the basketball when the shooter shoots, a reference shooting trajectory is obtained; Based on the reference shooting trajectory, the projection device 2 projects the corresponding reference shooting projection.

[0027] In this embodiment, the training method provided by this solution includes: firstly, acquiring the spatial orientation information of the basketball hoop 1 relative to the projection device 2; through multiple shooting processes by the trainee, collecting and determining the release height and release angle of the basketball during the trainee's habitual shooting; based on the acquired orientation information and these release parameters, generating a reference shooting trajectory; and controlling the projection device 2 to project the reference shooting trajectory in the form of visible light onto the training field.

[0028] In practice, since the position of the projection device 2 is fixed, the control unit 4 obtains the spatial coordinates of the basketball hoop 1 relative to the projection device 2 from the position label 10. The trainee holds the basketball and makes multiple shots. The camera 3 captures the action information of the basketball's release and transmits it to the control unit 4. The control unit analyzes the structure to obtain the release height and angle of the basketball at the time of the shot, thus obtaining personalized release parameters that can reflect the trainee's current force characteristics. Therefore, the subsequently generated reference trajectory is closer to the ball's trajectory after the trainee's natural release.

[0029] Based on the relative position of the basket 1 and the aforementioned individualized release parameters (including the release height and angle of the basketball at the time of the shot), the control unit 4 calculates a reference shooting trajectory from the release position to the basket 1 using a parabola. Because the reference trajectory takes into account the release height and angle of the basketball during the trainee's shot, it is more imitable for the trainee compared to directly using a universal standard trajectory. The trainee does not need to make significant changes to their movements when referencing it, which is more conducive to developing a stable shooting rhythm and thus steadily cultivating muscle memory.

[0030] After receiving the reference trajectory data, projection device 2 projects a visible trajectory line into the air, such as a parabola composed of continuous light spots or line segments. During subsequent shots, the trainee can directly observe the positional deviation between the actual shot and the projected trajectory. Because the visual feedback is directly superimposed on the real training scenario, the trainee can instantly perceive and correct subtle differences in force or angle, thereby improving the consistency and trajectory of their shot in a relatively short time.

[0031] Because it employs a method of extracting individual shooting parameters based on multiple shooting data, the deviation between the projected reference trajectory and the trainee's own movement characteristics is minimal. This makes the visual guidance during training more natural, allowing the trainee to align the actual ball trajectory with the projection line without repeated trial and error. Since the position tag 10 is integrated inside the basket 1, the system can quickly enter working mode, reducing interruptions to training during adjustments. This makes the physical calculation input of the reference trajectory closer to real shooting conditions, and the trajectory shape can more accurately reflect the entry path suitable for the trainee.

[0032] Specifically, the following logic can be used when actually outputting the parabolic trajectory: The shooter takes multiple shots, such as four shots. The shooter selects the lowest and highest release heights of the basketball, as well as the highest and lowest release angles. Then, for each shot, the corresponding maximum and minimum release angles are used to generate two parabolic trajectories for a clean shot, resulting in a total of four parabolas. The control unit 4 directs the projection device 2 to project the shot within the range defined by these four parabolas. This ensures a high degree of compatibility between the projected shot and the shooter's shooting habits, allowing the shooter to develop muscle memory for shooting without significantly altering their habits. The shooting speed can be actively controlled by the shooter. A low shooting speed results in the basketball landing far from the rim 1, while a high shooting speed results in the basketball landing on the backboard. Therefore, the shooter can adjust the shooting speed based on the specific shooting results.

[0033] Location tag 10 can be an ultra-wideband (UWB) wireless transmitter module. Because UWB signals have extremely narrow pulse widths, control unit 4 captures the pulses emitted by the tag using multiple receiving antennas at known locations, and calculates the tag's three-dimensional coordinates based on the time difference of arrival. For example, UWB wireless transmitter modules can be fixed to the lower edge of the basket 1, with four evenly distributed circumferentially. In this configuration, the tag and the receiving antennas are connected only by a radio channel; therefore, control unit 4 obtains electrical signal parameters directly corresponding to the spatial location.

[0034] Specifically, when the lowest and highest shooting points are h respectively min and h max The horizontal distance between the shooting point and the basket 1 is L, the height of the basket 1 is H, and the release angle of the basketball for the minimum shot and the maximum shot are α and α, respectively. min and α max ,but:

[0035] Subtracting time t, we get:

[0036] During a swish shot, the basketball passes through points L and H during its descent.

[0037]

[0038] If the initial velocity is v0, then:

[0039] The trajectory of a swish shot is:

[0040] In h minSubstitute α min and α max , and h max Substitute α min and α max The specific parabola can be obtained from this.

[0041] The basketball shooting training system also includes a smoke or water mist generator to produce smoke or water mist in the shooting scene to improve projection clarity.

[0042] Projection device 2 uses a high-speed two-dimensional galvanometer laser. Utilizing the persistence of vision effect of the human eye, a visible laser beam is controlled by a high-speed oscillating two-dimensional galvanometer to repeatedly scan the entire trajectory in the vertical plane of the shot at a frequency higher than 50Hz. The human eye cannot distinguish fast-moving light spots and will perceive a continuous, suspended luminous parabola in the air.

[0043] The laser galvanometer module is scanned obliquely upwards so that the scanning plane coincides with the sagittal plane of the shot, without occupying the shooting space.

[0044] The light source is a 532nm green laser with Class 3R safety rating, which meets human eye safety standards.

[0045] The actuator is a two-dimensional high-speed galvanometer with a scanning frequency of ≥500Hz, ensuring that large-size trajectories are flicker-free and free of ghosting.

[0046] The actuator controller is an embedded motherboard. After the above parameters are input, the coordinates of the four parabolas are calculated in real time and converted into the deflection angle signal of the galvanometer.

[0047] Within a single scanning cycle, four parabolas are traversed sequentially. By controlling the scanning dwell time of each trajectory to adjust the brightness, layered display with high brightness at the boundary lines and low brightness in the middle area can be achieved.

[0048] The training venue was chosen to be a professional indoor basketball training hall.

[0049] The basketball shooting training system also includes a mobile platform 6, above which a standing area for the shooter is formed. The standing area is marked out to guide the shooter to stand in the appropriate position. The projection device 2 and the camera 3 are both supported on the mobile platform 6.

[0050] The height of basket 1 is the sum of the standard basket 1 height and the height of the standing area.

[0051] The camera (3) is located to the side of the standing area, and the projection device (2) is located behind the standing area.

[0052] Both the projection device 2 and the camera 3 are supported on the mobile platform 6 by support rods, and the support rods and the mobile platform 6 are connected by a hinge that can be locked, so that the support rods can be folded and stored relative to the mobile platform 6. The projection device 2 and the camera 3 are detachably connected to the support rod.

[0053] In this embodiment, the training system may further include a mobile platform 6. The upper surface of the mobile platform 6 forms a platform area for the shooter to stand on, and the projection device 2 and camera 3 are both mounted on the platform via a support structure. In use, the final height of the basketball hoop 1 is the sum of the standard basketball hoop 1 height and the standing area height to compensate for the height of the standing area.

[0054] Camera 3 is positioned to the side of the shooter's body during the shot. Since the arm extension height and the release angle of the basketball are primarily displayed along the side of the body at the moment of release, a side view can more directly capture these motion parameters, avoiding potential limb obstruction and depth recognition errors that may occur with frontal or back views. Projection device 2 is positioned behind the shooter's body during the shot, with its projected beam extending from the trainee's rear to the front of the court. This avoids interfering with the shooter's forward line of sight and also helps to fully lay out the reference trajectory in the space, forming clear visual guidance.

[0055] The projection device 2 and camera 3 are each fixed to the mobile platform 6 by a support rod. The lower end of the support rod is connected to the platform by a lockable hinge structure. After the locking device is released, the support rod can rotate and fold around the hinge axis onto the platform surface, thus significantly reducing the overall height during storage and transportation. The upper end of the support rod is detachably connected to the projection device 2 or camera 3, allowing the device to be removed individually for inspection or replacement as needed.

[0056] The addition of a mobile platform 6, integrating the projection and camera units, allows the entire training setup to be independently deployed without relying on existing facilities, enhancing its adaptability to different venues. Since camera 3 captures the hand's release posture from the side, its observation direction aligns with the arm's motion plane, resulting in more accurate data on the basketball's release height and angle, reducing calculation errors caused by skewed observation angles. The projection device 2, located behind the body, ensures the trajectory is visible while avoiding glare interference. The support rod and platform are connected by a lockable hinge, allowing for quick folding and storage when not in training mode, improving the system's portability and space utilization. The detachable nature of the projection device 2 and camera 3 from the support rod simplifies maintenance and upgrades, reducing the complexity of equipment updates.

[0057] like Figure 1 As shown in the diagram, the height of the basketball hoop 1, H = 3.05m + 0.1m, where 0.1m is the height of the standing area. The release height h of the basketball during a shot is... min =2.30, h max=2.70, the horizontal distance L between the shooter and the basket 1 is 4.225m, α min =45°, α max =60°.

[0058] Example 2: Reference Figures 1-3 In addition to possessing all the technical solutions of the above embodiments, the embodiments of the present invention further possess the following technical solutions: Shooting techniques also include: S5: Based on the projection device 2, a reference shooting projection is projected, and the shooter performs the shooting action again to determine the release height and release angle of the basketball when the shooter shoots, and compares it with the release height and release angle of the basketball when shooting under the reference shooting trajectory, and outputs the comparison result.

[0059] The basketball shooting training system also includes an output device 5, which is connected to the control unit 4 and is suitable for outputting comparison results. The output device 5 can be a speaker, used to remind the shooter of specific shooting problems in order to better correct their shooting motion. The speaker can be a Bluetooth headset or a speaker fixed to the mobile platform 6.

[0060] Specifically, when the actual release height detected by the control unit 4 is higher than the upper limit of the reference height used when generating the reference trajectory, the speaker will issue a "release point too high" prompt; conversely, when the actual release height is lower than the lower limit of the reference height, it will announce "release point too low". Similarly, in the dimension of release angle, the comparison result can be converted into a voice command of "angle too large" or "angle too small".

[0061] In scenarios involving combined deviations, where both the release height and release angle exceed the reference range simultaneously, the control unit can arrange the broadcast sequence according to a predetermined logic. For example, it can first inform about the height deviation and then remind about the angle deviation, making the information transmission clear and avoiding confusion caused by multiple instructions being superimposed at the same time.

[0062] Because the comparison results are broken down into individual deviations in height and angle, and clearly communicated via voice, trainees can immediately focus their attention on specific physical aspects without needing to look at the screen or interrupt their practice. This facilitates rapid integration between visual guidance and proprioception. Since the prompts are directly related to the direction of deviation, each voice feedback provides a clear action anchor, making the self-correction process of shooting posture more layered and reducing ineffective attempts due to blind adjustments.

[0063] Specifically, after the reference shot projection appears, the shooter follows the light trail to perform another shot. During this shot, camera 3 recaptures the actual release height and angle of the basketball and transmits the data to control unit 4 for analysis. Control unit 4 has stored the reference release height and angle of the basketball used to generate the current shooting trajectory; these are stable parameters extracted from the shooter's multiple trial shots. Control unit 4 compares the real-time measured release height of the basketball with the reference release height, and simultaneously compares the real-time release angle of the basketball with the reference release angle, obtaining height and angle deviation values ​​and generating corresponding comparison results. These comparison results can be used to indicate the difference between the shooter's current action and the reference action.

[0064] In the processing flow of control unit 4, in addition to determining the relative position, extracting personal posture parameters, and solving and projecting the reference trajectory, a comparison and feedback process is added: after the release height and release angle of the basketball when shooting again are extracted in real time, they are compared one by one with the release height and release angle of the basketball when shooting the reference trajectory. Once the deviation exceeds the preset allowable range, control unit 4 drives output device 5 to issue a corresponding correction prompt.

[0065] Because the actual shooting parameters are compared in real time after the reference trajectory is projected, the shooter's movement deviations can be quantified into specific height and angle deviations. Therefore, the training process no longer relies on vague self-perception but provides a clear basis for movement correction. Since the comparison results are directly communicated via sound through output devices such as speakers, the shooter can receive corrective information while maintaining visual focus on the shooting point and the projected trajectory. This reduces the discontinuity caused by looking at the screen or interrupting practice, helping to gradually approach the shooting posture corresponding to the reference trajectory within a continuous rhythm of movement. By using the stable parameters collected from the initial trial shot as a reference benchmark and comparing them with actual shooting data, each movement feedback is based on individual habits, thus enabling more targeted reinforcement of reasonable shooting patterns.

[0066] Example 3: Reference Figures 1-3 In addition to possessing all the technical solutions of the above embodiments, the embodiments of the present invention further possess the following technical solutions: Shooting techniques also include: S6: Based on the projection device 2, a reference shooting projection is projected. When the shooter fails to make an effective shot for a predetermined number of consecutive times, that is, when the release angle and release height of the basketball exceed the range of the reference shooting trajectory, it indicates that the shooter's shooting habits are unstable and have changed. At this time, S2-S5 need to be repeated to generate a new personalized parabola and reproject it through the projection device 2, thereby further improving the compatibility between the reference shooting projection and the shooter's shooting action.

[0067] If the release angle and height of the basketball during the shot match the range of the release angle and height of the basketball during the shot corresponding to the previously generated reference shooting projection, it indicates that there is a problem with the shooter's shooting force, resulting in the basketball's release speed not meeting the standard. In this case, the shooter can adjust the shooting force according to the actual shooting situation.

[0068] In this embodiment, during the training process where the reference shooting projection is continuously displayed, the control unit 4 also monitors the shooter's subsequent shots. If several consecutive shots fail to result in a successful basket, such as eight times, the control unit 4 retrieves the release height and angle data of the basketball simultaneously collected by the camera 3 and compares them with the reference height and angle used to generate the current reference trajectory. If the comparison shows that the release height or angle of the basketball exceeds the allowable fluctuation range set by the reference parameters, steps S2-S5 are repeated to generate a new personalized parabola that is re-projected through the projection device 2. The allowable fluctuation range can be set to ±5%.

[0069] Exceeding the allowable fluctuation range set by the baseline parameters indicates that the shooter's shooting posture habits have deviated significantly, and the previously established reference trajectory no longer matches the current body state. At this time, the control unit 4 can not only re-collect the shooter's shooting parameters, but also directly retrieve the basketball release height and release angle from multiple shooting actions exceeding the baseline parameters, and generate a new personalized shooting trajectory based on this. Then, the projection device 2 projects the updated reference projection, thereby realigning the guide trajectory with the shooter's changed posture habits.

[0070] If, during a series of unsuccessful shots, the release height and angle of the basketball remain within the baseline range as detected by camera 3, it indicates that the release posture frame is basically stable, and the problem mainly lies in the force application phase. Since deviations in release speed can also prevent the basketball from reaching the basket 1 along the reference trajectory, it can be inferred that the shooter's shooting force is deviated, causing the actual release speed to be inconsistent with the initial velocity required by the reference trajectory. In this situation, control unit 4 does not trigger trajectory reconstruction but maintains the current reference projection unchanged, allowing the shooter to adjust the shooting force autonomously based on their own shooting feel.

[0071] Because personalized data is automatically re-collected and the trajectory refreshed when posture parameters drift significantly, the guided trajectory can dynamically follow changes in the trainee's state, maintaining a high degree of personal fit. This helps provide a reference that matches the body's conditions at different training stages. Since the shooter adjusts their force autonomously in conjunction with voice prompts when there is a deviation in force, the trainee does not need to interrupt their visual channel between the trajectory and the basket (1), allowing them to maintain a consistent movement rhythm while correcting force. This makes the coordination between visual guidance and proprioception more natural.

[0072] It can be understood that, except for conflicting parts, the above embodiments 1-3 can be freely combined to form other embodiments of the present invention.

[0073] In the description of this invention, it should be understood that 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 indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0074] In this invention, 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 or an electrical 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 invention according to the specific circumstances.

[0075] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0076] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0077] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A basketball shooting training method, characterized in that, Based on a projection device (2) capable of projecting the shooting trajectory, the shooting method includes: S1: Determine the position of the basket (1) relative to the projection device (2), and establish a coordinate system with the location of the projection device (2) as the origin. The basket (1) is located in the first quadrant of the coordinate system. S2: Determine the release height and release angle of the basketball by the shooting action of the shooter in a fixed position; S3: In the coordinate system, based on the coordinate position of the basket (1) and the height and angle of the basketball when the shooter shoots, the reference shooting trajectory is obtained; S4: Based on the reference shooting trajectory, the projection device (2) projects the corresponding reference shooting projection.

2. The basketball shooting training method as described in claim 1, characterized in that, S3 specifically includes: Based on the coordinate position of the basket (1), the maximum and minimum height of the basketball's release during multiple shots by the shooter, and the maximum and minimum release angle of the basketball during multiple shots, a reference shooting trajectory is derived.

3. The basketball shooting training method as described in claim 2, characterized in that, Shooting techniques also include: S5: Based on the projection device (2), a reference shooting projection is projected, and the shooter performs the shooting action again to determine the release height and release angle of the basketball when the shooter shoots, and compares it with the release height and release angle of the basketball when shooting under the reference shooting trajectory, and outputs the comparison result.

4. The basketball shooting training method as described in claim 3, characterized in that, Shooting techniques also include: S6: Based on the projection device (2), a reference shooting projection is projected, and when the shooter fails to make a valid shot for a predetermined number of consecutive times, S2-S5 are repeated to update the reference projection.

5. A basketball shooting training system, characterized in that, The basketball shooting training system, suitable for performing the basketball shooting training method as described in any one of claims 1-4, comprises: The basket (1) has a location label (10) inside. Projection device (2), suitable for projecting shooting trajectory; Camera (3) is suitable for scanning the shooting motion of a shooter in a fixed position; The control unit (4), connected to the location tag (10), camera (3) and projection device (2), is configured as follows: The position of the basket (1) relative to the projection device (2) is determined by the position label (10), and a coordinate system is established with the position of the projection device (2) as the origin. The basket (1) is located in the first quadrant of the coordinate system. By analyzing the shooting action of the shooter transmitted by the camera (3), the release height and release angle of the basketball when the shooter shoots are determined. Based on the position of the basket (1) relative to the projection device (2), and the release height and release angle of the basketball when the shooter shoots, a reference shooting trajectory is obtained; Based on the reference shooting trajectory, the projection device (2) projects the corresponding reference shooting projection.

6. The basketball shooting training system as described in claim 5, characterized in that, Also includes: Output device (5) is connected to control unit (4) and is suitable for outputting comparison results.

7. The basketball shooting training system as described in claim 6, characterized in that, The output device (5) includes a speaker.

8. The basketball shooting training system as described in claim 5, characterized in that, Also includes: The mobile platform (6) forms a standing area for the shooter. The projection device (2) and camera (3) are both supported on the mobile platform (6). The control unit (4) is integrated into the mobile platform (6). The reference shooting trajectory is formed above the standing area.

9. The basketball shooting training system as described in claim 8, characterized in that, The height of the basket (1) is the sum of the height of the standard basket (1) and the height of the standing area.

10. The basketball shooting training system as described in claim 8, characterized in that, The camera (3) is located to the side of the standing area, and the projection device (2) is located behind the standing area.

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