Indoor slingshot entertainment device and ballistic trajectory identification method based on indoor slingshot entertainment device

Abstract

The invention discloses an indoor slingshot entertainment device and a ballistic trajectory recognition method based on the indoor slingshot entertainment device, and relates to the technical field of entertainment equipment, in particular to the technical field of trajectory recognition of the indoor slingshot entertainment device. The device comprises a sound box, a projector, a recognition device, a ground camera, a wall camera, a recognition infrared laser, a projection curtain and a sponge ball. The ground camera and the wall camera collect a sponge ball movement track signal and transmit the sponge ball movement track signal to the recognition device; the infrared laser collects impact signals. The recognition device converts data into sound effect and image signals and transmits the sound effect and image signals to the sound equipment and the projector respectively, the sound equipment generates sound effects, the projector projects images to the curtain, and immersive entertainment experience is provided. The indoor slingshot entertainment device can simulate various ejection situations and is suitable for the fields of entertainment, education, competition and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of entertainment equipment, and in particular to the technical field of trajectory recognition of an indoor slingshot entertainment device. Background Art

[0002] As a traditional shooting tool, slingshots have gradually been integrated into the field of entertainment and interactive games in recent years. Currently, most slingshot entertainment devices on the market are designed with traditional physical targets, electronic targets or simple sensors as the core. Although they have certain entertainment and application value, they generally have problems such as insufficient interactivity, single functions, low recognition accuracy, and imperfect safety design. These devices are usually unable to provide accurate trajectory data and real-time feedback, and can only achieve simple shooting and hit determination, which makes it difficult to meet players' needs for immersive experience and multi-scene adaptation. In addition, the existing devices have a low degree of intelligence and digitization, and are insufficient in virtual interaction and complex data analysis, which limits their scalability and attractiveness in education, competition and other fields.

[0003] Existing trajectory recognition technologies are mainly used for motion capture of ball sports or flying objects. Common methods include single-camera visual recognition, infrared sensor recognition, and laser ranging recognition. These methods can achieve a certain degree of motion trajectory capture in specific scenarios, but they generally have limitations. Single-camera visual recognition is limited by the viewing angle and it is difficult to capture the complete motion trajectory, especially for fast-moving small targets such as sponge balls fired by slingshots. Its accuracy and resolution are low, which can easily lead to misjudgment. Infrared sensor recognition is sensitive to factors such as target material, ambient light, and occlusion, and is easily disturbed, reducing stability and accuracy. Although laser ranging has high accuracy, it can only detect the displacement of key positions and cannot achieve continuous trajectory capture. Summary of the invention

[0004] In order to overcome the shortcomings of the current slingshot entertainment device and realize the digitalization, interactivity and high-precision trajectory capture function of the slingshot entertainment device, the present invention proposes the following solutions:

[0005] An indoor slingshot entertainment device, the device comprising a speaker, a projector, a recognition device, a ground camera, a wall camera, a recognition infrared laser, a projection screen and a sponge ball;

[0006] The ground camera is used to collect ground track signals during the movement of the sponge ball, and convert the ground track signals into ground track data, and transmit them to the recognition device;

[0007] The wall camera is used to collect the wall track signal during the movement of the sponge ball, and convert the wall track signal into wall track data, and transmit it to the recognition device;

[0008] The identification infrared laser is used to collect the impact signal when the sponge ball hits the projection screen, and transmit the impact signal to the identification device;

[0009] The recognition device is used to convert the received ground track data, wall track data and impact signal into effect simulation signals, wherein the effect simulation signals include sound effect signals and picture / video signals, and send the sound effect signals to the audio system and send the picture / video signals to the projector;

[0010] The speaker generates and sends out audio information according to the received sound effect signal;

[0011] The projector projects the received picture / video signal onto a projection screen.

[0012] Furthermore, the device also includes a slingshot prop device, which is located in front of the projection screen and is used to project the sponge ball.

[0013] Furthermore, the slingshot prop device also includes a tension sensor and a tension display device. The tension sensor is located on the slingshot prop device, and is used to detect the tension of the slingshot prop device in real time, and convert the tension into a tension signal and send it to the tension display device. The tension display device is used to display the tension value according to the tension signal.

[0014] Further, the device also includes a structural pipe frame, the structural pipe frame includes a top frame, two side frames and a back frame, and the top frame, the two side frames and the back frame enclose a hexahedral game space;

[0015] The speakers are installed on both sides of the top frame;

[0016] The projector is mounted on the top frame;

[0017] The projection screen is installed on the back frame and covers the back frame;

[0018] The identification infrared laser is installed on the top of the back frame, above the middle of the projection screen;

[0019] The recognition device is mounted on the top frame and is located between the projector and the infrared laser;

[0020] The identification device, the projector and the infrared laser are located on the same straight line, and the straight line is perpendicular to the projection screen.

[0021] Furthermore, the device also includes a protective rope net and floor glue;

[0022] The protective rope net covers the hollowed-out parts of the structural pipe frame;

[0023] The floor glue covers the ground of the game space.

[0024] Furthermore, the lens of the ground camera is a 130° lens.

[0025] Furthermore, the lens of the wall camera is a CS-mount 2.8-12mm wide-angle lens.

[0026] Furthermore, the ground camera and the wall camera are both infrared automatic calibration cameras.

[0027] Furthermore, the ground camera and the wall camera are both installed with IR-Cut, and the IR-Cut is a bandpass infrared filter of 700-1100nm.

[0028] A method for identifying a ballistic trajectory, characterized in that the method is implemented based on the device of the present invention, the running trajectory of the sponge ball is a ballistic trajectory, the method is implemented by a computer program embedded in the identification device, and the method comprises the following steps:

[0029] S1. Actually collecting a ground track signal, and obtaining a starting position StartPosition and a starting time StartTime when the sponge ball is launched according to the ground track signal;

[0030] S2, collecting the wall trajectory signal in real time, and obtaining the landing time EndTime when the sponge ball hits the wall according to the wall trajectory signal;

[0031] S3, collecting the impact signal in real time, and obtaining the landing position EndPosition of the sponge ball when it impacts according to the impact signal;

[0032] S4, according to the starting position StartPosition and the landing position EndPosition when the sponge ball is launched, the travel distance Distance of the sponge ball is obtained by a spatial measurement method;

[0033] S5. Obtain the speed s of the sponge ball according to the travel distance Distance, the starting time StartTime and the landing time EndTime of the sponge ball:

[0034]

[0035] S6. Obtain the launch angle angle of the sponge ball according to the starting position StartPosition and the landing position EndPosition of the sponge ball:

[0036]

[0037] S7. Obtain the running trajectory of the sponge ball according to the speed s of the sponge ball and the launching angle angle of the sponge ball.

[0038] Beneficial Effects

[0039] (1) An indoor slingshot entertainment device of the present invention can capture and feedback the movement trajectory of the sponge ball in real time through the integrated operation of audio, projector, infrared laser and multiple cameras. The system closely combines the movement of the sponge ball with the player's operation by simulating sound and visual effects, providing a richer interactive experience. This highly interactive design breaks through the single shooting hit judgment method of existing devices, allowing players to not only see the results of the shooting, but also feel the sound and visual feedback in real time, enhancing the entertainment and immersion, and meeting the players' demand for diversified and highly immersive entertainment devices.

[0040] (2) An indoor slingshot entertainment device of the present invention uses a diversified recognition technology of ground and wall cameras in conjunction with infrared lasers, effectively overcoming the problem of insufficient recognition accuracy commonly seen in traditional slingshot entertainment devices. In the prior art, single-camera visual recognition is limited by the viewing angle range, and infrared sensor recognition is easily interfered by factors such as ambient light and occlusion. The present invention avoids the viewing angle limitation of a single camera and the problem of infrared interference through complementary data collection by two cameras, thereby achieving comprehensive tracking of the sponge ball's trajectory. Combined with the high-precision calculations and real-time feedback of computer programs, the system can provide players with accurate trajectory data and dynamic effects, eliminating the common misjudgment and delay problems in traditional devices.

[0041] (3) The indoor slingshot entertainment device of the present invention takes into account a variety of usage scenarios. It can not only adapt to family entertainment, but also be widely used in education, competition and other fields. Most traditional devices lack intelligence and digitization, which limits their adaptability in complex environments. The present invention, by embedding a computer program, realizes intelligent trajectory recognition and feedback, and supports multi-scenario and multi-functional adaptation. For example, the device can adjust the sound and visual effects in real time according to different game modes, enhancing the player's sense of immersion, and providing higher interactivity and data feedback for education and training or competitive scenes, improving the scalability and attractiveness of the device.

[0042] (4) The indoor slingshot entertainment device of the present invention fully considers user safety in structural design. The device is equipped with a protective rope net and floor glue to ensure that players can avoid injuries caused by sponge balls flying out of the frame during operation. It not only protects the players, but also effectively reduces the risk of equipment damage. In addition, the layout and installation methods of all equipment have been carefully designed and considered to ensure a stable structure and safe use, solving the shortcomings of traditional equipment in safety design.

[0043] (5) An indoor slingshot entertainment device of the present invention uses a spatial measurement method and time difference calculation to identify the speed, shooting angle and trajectory of a sponge ball. Compared with the recognition method in the prior art that mainly relies on a single sensor, the combination of multiple cameras and infrared lasers of the present invention can provide higher data acquisition accuracy. In particular, in the tracking of fast small targets launched by slingshots, traditional methods have large errors. The present invention combines multiple recognition devices to achieve accurate capture and continuous tracking of small targets, providing players with more accurate feedback.

[0044] (6) The indoor slingshot entertainment device of the present invention has an intelligent design that enables the system to perform complex data analysis on each shot of the player in real time and generate virtual interactive effects. Traditional entertainment devices generally lack data analysis capabilities and can only provide simple hit feedback. The present invention not only has accurate trajectory recognition capabilities, but can also adjust visual and sound feedback in real time according to trajectory data, providing a richer and more diverse virtual interactive experience. This intelligent interactive method can better meet the player's demand for virtual reality experience, and is particularly suitable for scenarios such as education and competition, greatly expanding the application prospects of entertainment devices.

[0045] (7) The indoor slingshot entertainment device of the present invention takes energy saving and environmental protection into full consideration during design, and adopts a low-power infrared fill light group and an infrared automatic calibration camera to reduce energy consumption. At the same time, all kinds of electronic equipment in the device are high-performance components, which reduces energy waste while ensuring performance. In addition, all materials meet environmental protection standards, help reduce environmental pollution, and meet the needs of sustainable development.

[0046] The indoor slingshot entertainment device of the present invention can simulate a variety of ejection situations and is suitable for entertainment, education, competition and other fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is an overall structural diagram of an indoor slingshot entertainment device described in Embodiment 1. Reference numerals: audio 1, projector 2, recognition device 3, recognition infrared laser 4, projection screen 5, card swiping device 6, light box description sign 7, touch screen 8, slingshot prop device 9, structural pipe frame 10, neon sign 11, protective rope net 12, structural frame paint surface 13, floor glue 14.

[0048] Figure 2 It is a structural diagram of the recognition device described in the second embodiment, with reference numerals: ground camera C1, wall camera C2.

[0049] Figure 3 This is a workflow diagram of an indoor slingshot entertainment device described in Implementation Example 8.

[0050] Figure 4It is an electrical schematic diagram of an indoor slingshot entertainment device described in Implementation Method 1. Implementation

[0052] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] Implementation Method 1

[0054] Combined with Figures 1-2 To illustrate this embodiment, an indoor slingshot entertainment device includes a sound system 1, a projector 2, a recognition device 3, a ground camera C1, a wall camera C2, a recognition infrared laser 4, a projection screen 5, and a sponge ball;

[0055] The ground camera C1 is used to collect ground track signals during the movement of the sponge ball, and convert the ground track signals into ground track data, and transmit them to the recognition device 3;

[0056] The wall camera C2 is used to collect the wall track signal during the movement of the sponge ball, and convert the wall track signal into wall track data, and transmit it to the recognition device 3;

[0057] The identification infrared laser 4 is used to collect the impact signal when the sponge ball hits the projection screen 5, and transmit the impact signal to the identification device 3;

[0058] The recognition device 3 is used to convert the received ground track data, wall track data and impact signal into effect simulation signals, wherein the effect simulation signals include sound effect signals and picture / video signals, and send the sound effect signals to the audio 1 and send the picture / video signals to the projector 2;

[0059] The speaker 1 generates audio information and sends it out according to the received sound effect signal;

[0060] The projector 2 projects the received picture / video signal onto the projection screen 5 .

[0061] This implementation achieves high-precision sponge ball trajectory recognition and real-time feedback by integrating the collaborative work of multiple devices, greatly improving the interactivity and immersion of the game. The combined use of ground cameras and wall cameras can accurately capture the movement trajectory of the sponge ball, and the recognition device generates analog signals of sound and visual effects by processing these data, achieving multi-sensory feedback. The speakers and projectors generate sound effects and project images onto the screen based on the received signals, bringing players an immersive entertainment experience. In addition, this implementation achieves efficient coordination and real-time feedback of equipment, allowing players to enjoy accurate and rich entertainment interactions.

[0062] Implementation Method 2

[0063] This embodiment is a further limitation of the first embodiment. Furthermore, the device further includes a slingshot prop device 9, and the slingshot prop device 9 is located in front of the projection screen 5, and the slingshot prop device 9 is used to project the sponge ball.

[0064] This embodiment adds a slingshot prop device on the basis of the first embodiment, and provides an actual slingshot prop. The sponge ball is projected through the device, making the entire game process more in line with the experience of real slingshot shooting. Players can not only enjoy the sound effects and visual feedback brought by the game, but also shoot by actually operating the slingshot prop, making the entertainment experience more vivid and interesting, and further enhancing the interactivity and playability of the game.

[0065] Implementation Method 3

[0066] This embodiment is a further limitation of the second embodiment. Furthermore, the slingshot prop device 9 also includes a tension sensor and a tension display device. The tension sensor is located on the slingshot prop device 9, and is used to detect the tension of the slingshot prop device 9 in real time, and convert the tension into a tension signal and send it to the tension display device. The tension display device is used to display the tension value according to the tension signal.

[0067] This embodiment adds a tension sensor and a tension display device on the basis of the second embodiment, and monitors and displays the tension value of the slingshot prop in real time. Through real-time detection of tension, players can intuitively see their own shooting strength, adding more competitiveness and challenges to the game. Players can adjust their operating strategies according to the feedback on the tension display device, improve shooting accuracy, and increase the technicality and entertainment of the game.

[0068] Implementation Method 4

[0069] This embodiment is a further limitation of the first to third embodiments. Furthermore, the device further comprises a structural pipe frame 10, wherein the structural pipe frame 10 comprises a top frame, two side frames and a back frame, and the top frame, the two side frames and the back frame enclose a hexahedral game space;

[0070] The speakers 1 are installed on both sides of the top frame;

[0071] The projector 2 is mounted on the top frame;

[0072] The projection screen 5 is installed on the back frame, covering the back frame;

[0073] The identification infrared laser 4 is installed on the top of the back frame and above the middle of the projection screen 5;

[0074] The recognition device 3 is mounted on the top frame and is located between the projector 2 and the infrared laser 4;

[0075] The recognition device 3 , the projector 2 and the infrared laser 4 are located on the same straight line, and the straight line is perpendicular to the projection screen 5 .

[0076] This embodiment introduces a structural pipe frame to rationally arrange the audio, projector, recognition device, infrared laser and other equipment in a hexahedral game space, making the game space more compact and more functional. This structure can provide a standardized and stable entertainment environment to ensure the maximum performance of the equipment and user experience. In addition, the design of the frame improves the safety and stability of the equipment, ensuring that players can enjoy entertainment more safely during the game.

[0077] Implementation Method 5

[0078] This embodiment is a further limitation of the fourth embodiment. Furthermore, the device further includes a protective rope net 12 and a floor glue 14;

[0079] The protective rope net 12 covers the hollowed-out part of the structural pipe frame 10;

[0080] The floor glue 14 covers the ground of the game space.

[0081] This embodiment adds a protective rope net and floor glue on the basis of the fourth embodiment, further improving the safety and comfort of the equipment. The protective rope net effectively prevents players from accidentally colliding or slipping during the game, ensuring the safety of the players; the floor glue provides a comfortable and suitable ground environment for the game, enhancing the player's operating stability and comfort. Through these optimizations in safety and comfort, players can focus more on the game experience, improving the all-round experience of entertainment equipment.

[0082] Implementation Method 6

[0083] This embodiment is a further limitation of the first to fifth embodiments. Furthermore, the lens of the ground camera C1 is a 130° lens.

[0084] The ground camera C1 with a 130° wide-angle lens significantly expands its field of view, enabling it to fully cover the game area, ensuring that the sponge ball can be accurately captured no matter at what angle it is launched. This improvement improves the accuracy of trajectory collection, reduces blind spots, and enhances the stability of the system, bringing players a smoother interactive experience.

[0085] Furthermore, the lens of the wall camera C2 is a CS-mount 2.8-12mm wide-angle lens.

[0086] The wall camera C2 uses a CS-mount 2.8-12mm wide-angle lens, which can cover a wider range of wall areas. This design ensures that even if the sponge ball hits the wall at a long distance or extreme angle, the camera can still accurately identify the trajectory data, greatly improving the accuracy and reliability of trajectory collection, and providing players with more accurate feedback effects.

[0087] Furthermore, the ground camera C1 and the wall camera C2 are both infrared automatic calibration cameras.

[0088] The ground camera C1 and wall camera C2 equipped with IR-Cut infrared filters can effectively filter out unnecessary infrared light, thereby maintaining high-precision trajectory collection in low-light or strong-light environments. This optimized design ensures that the device can still work stably under changing ambient light conditions, ensures accurate recording and feedback of trajectories during the game, and enhances the applicability of the device.

[0089] Furthermore, the ground camera C1 and the wall camera C2 are both installed with IR-Cut, and the IR-Cut is a band-pass infrared filter of 700-1100nm.

[0090] The infrared automatic calibration function of the ground camera C1 and the wall camera C2 improves the automatic adjustment ability in different environments, further ensuring the long-term stable operation of the equipment. This design helps the equipment to maintain high-precision data collection during long-term use, reduces human intervention, and improves the durability of the system and the continuity of user experience.

[0091] Furthermore, in the present embodiment, the ground camera C1 and the wall camera C2 are both infrared automatic calibration cameras, and are both equipped with IR-Cut, which is a bandpass infrared filter of 700-1100nm.

[0092] By combining a 130° wide-angle lens and an infrared filter, the ground and wall cameras can accurately and quickly capture the movement trajectory of the sponge ball in a larger range. This optimization enables the system to respond to the player's operations in real time and quickly generate sound and visual effects, greatly improving the interactivity and response speed of entertainment equipment, giving players a more immediate and realistic gaming experience.

[0093] Implementation Method 7

[0094] A method for identifying a ballistic trajectory, the method is implemented based on the device described in any one of the first to sixth embodiments, the running trajectory of the sponge ball is a ballistic trajectory, the method is implemented by a computer program embedded in the identification device 3, and the method includes the following steps:

[0095] S1. Actually collecting a ground track signal, and obtaining a starting position StartPosition and a starting time StartTime when the sponge ball is launched according to the ground track signal;

[0096] S2, collecting the wall trajectory signal in real time, and obtaining the landing time EndTime when the sponge ball hits the wall according to the wall trajectory signal;

[0097] S3, collecting the impact signal in real time, and obtaining the landing position EndPosition of the sponge ball when it impacts according to the impact signal;

[0098] S4, according to the starting position StartPosition and the landing position EndPosition when the sponge ball is launched, the travel distance Distance of the sponge ball is obtained by a spatial measurement method;

[0099] S5. Obtain the speed s of the sponge ball according to the travel distance Distance, the starting time StartTime and the landing time EndTime of the sponge ball:

[0100]

[0101] S6. Obtain the launch angle angle of the sponge ball according to the starting position StartPosition and the landing position EndPosition of the sponge ball:

[0102]

[0103] S7. Obtain the running trajectory of the sponge ball according to the speed s of the sponge ball and the launching angle angle of the sponge ball.

[0104] This embodiment uses detailed calculation methods and steps to accurately calculate the trajectory of the sponge ball based on the various sensor signals in the device. Through this method, the speed, launch angle and trajectory of the sponge ball can be efficiently and accurately identified, providing reliable technical support for the feedback mechanism of the game. This method can ensure that each launch of the player can obtain accurate trajectory data analysis, which significantly improves the interactivity and technicality of the game, and increases the challenge and fun of the game.

[0105] Implementation Method 8

[0106] This embodiment proposes a solution for a specific application scenario of the slingshot entertainment device of the present invention:

[0107] like Figure 1 As shown, in actual application scenarios, in order to improve the gaming experience, the indoor slingshot entertainment device described in any of the above embodiments may be further provided with:

[0108] A card swiping device 6 allows users to enter the entertainment experience area by swiping their cards;

[0109] Light box sign 7 provides intuitive operation guidance and information display, so players can easily obtain operation tips, rules and other game information;

[0110] The touch screen 8 allows players to make more personalized settings and game selections, making each player's experience more in line with personal preferences.

[0111] These devices can be implemented using existing technologies. The card swiping device 6, the light box description board 7, and the touch screen 8 can be installed on an integrated board 13, and the integrated board 13 can be placed in a position that is convenient for the player to operate.

[0112] It is also possible to install neon signs 11 at the entrance of the game area, which can not only improve the aesthetics of the equipment, but also visually attract the attention of players and enhance the atmosphere and attractiveness of the venue.

[0113] The slingshot prop device 9 can be set 2-3m behind the ground camera, which can provide better game performance while ensuring the personal safety of game players.

[0114] Before the game starts, the player needs to authenticate or pay through the card swiping device 6. After the system confirms the player's identity through the card swiping device 6, the game officially starts. The player will see the touch screen 8 on the integrated board 13, through which he can select the game mode or adjust the settings. On the light box instruction board 7, the player can view the game instructions, select the game mode the player likes, and adjust the volume and projection effect.

[0115] After the game starts, the slingshot prop device 9 located in front of the projection screen will become the player's "weapon". The player needs to stand in the designated position and pull the slingshot prop device 9. At this time, the tension sensor on the slingshot will monitor the player's operation in real time and display the tension value to help the player judge the strength of the launch. Through the tension display device, the player can see the real-time tension value, which can help the player adjust the strength and ensure the accuracy of each launch.

[0116] When the player is ready, he pulls the slingshot device 9, and the sponge ball will be ejected. At this time, the ground camera C1 and the wall camera C2 begin to capture the movement trajectory of the sponge ball in real time. The ground camera tracks the ground trajectory of the sponge ball, and the wall camera captures the trajectory data of the sponge ball hitting the wall. Every detail is accurately recorded to ensure that every shooting action of the player can be accurately captured by the system.

[0117] As the sponge ball moves, the recognition device 3 will calculate the ball's speed, launch angle and other information in real time based on the data collected by the ground and wall cameras. The recognition device converts these data into sound effect signals and picture / video signals, and the speaker 1 will play sound effects related to the movement of the sponge ball, such as the sound of the ball hitting an object, or the cheers when the target is successfully hit. At the same time, the projector 2 will project the corresponding visual effects onto the projection screen, such as the flight trajectory of the slingshot, or the special effects picture when the sponge ball hits the target, to enhance the player's sense of immersion.

[0118] Throughout the game, players can change the trajectory of the sponge ball by constantly adjusting the pulling force and the launch angle, with the goal of accurately hitting the virtual target on the projection screen. With each successful or failed launch, the system will feedback sound and visual effects, creating a dynamic entertainment experience.

[0119] When the game ends, the system generates a score based on the player's performance and displays the result through the touch screen 8. If the player wants to continue the game, he can reset or adjust the difficulty, or enter other game modes through the touch screen 8. Finally, the light on the neon sign 11 will flash to remind the player that the game is over or ready to start the next round.

[0120] The slingshot entertainment device of the present invention not only improves the interactivity and visual effects of the entertainment equipment, but also optimizes the player's experience and the management function of the equipment by adding additional functions such as a card swiping device, a light box description board, a touch screen, a neon sign, and an integrated board. Specifically, the addition of the card swiping device allows users to enter the entertainment experience area by swiping the card, which is convenient for management and identity verification, and is particularly suitable for multi-person use scenarios or environments that require management of points, membership, etc. The combination of the light box description board and the touch screen provides intuitive operation guidance and information display, and players can easily obtain information such as operation prompts, rule descriptions, and game scores, which improves the convenience and participation of the user experience. The interactive function of the touch screen allows players to make more personalized settings and game choices, so that each player's experience is more in line with personal preferences. In addition, the addition of the neon sign not only improves the aesthetics of the equipment, but also can visually attract the player's attention, enhance the atmosphere and attractiveness of the place, and especially in a dark environment, it can show its unique charm. As an integrated platform for multiple devices, the integrated board not only reduces the complexity of equipment installation, but also improves the stability and maintainability of the system, making the entire device more compact and easy to manage and upgrade. The combination of these designs makes the slingshot entertainment device of the present invention not only more diverse in functions, but also provides comprehensive improvements in terms of operational convenience, visual effects, and user experience, bringing players richer and more comfortable entertainment enjoyment, and further broadening the application scenarios and market demand for entertainment equipment.

[0121] A floor mat 14 used in an indoor slingshot entertainment device has an interactive area marked 2-3m behind a dual camera recognition component. The slingshot hardware props include a slingshot, a sponge ball and a tension sensor. The slingshot is held with both hands and stretched backwards. The launch force is controlled according to the tension sensor monitoring the backward stretching force, and the direction and up and down angle of the ejection are controlled by left and right adjustment. The sponge ball is a sphere made of sponge material that can meet the needs of slingshot shooting interaction. The diameter is 15-20cm, which can simulate real sponge ball head slingshot shooting and improve safety to avoid damage caused by metal bullets.

[0122] like Figure 2As shown in the structural diagram, an identification device for an indoor slingshot entertainment device consists of two infrared automatic calibration cameras, an infrared fill light group, and an equipment protection shell. The maximum frame rate of the infrared automatic calibration camera device is 60FPS, and the infrared filter IR-Cut can be automatically switched. One is installed to illuminate the wall, and the color image is used for spatial position calibration. The infrared image is used for real-time image acquisition to track the slingshot impact position on the wall. The other is installed to illuminate the ground to track and determine the slingshot launch position, and detect the slingshot angle and flight status in real time. The ground automatic calibration camera is installed with a 130° lens, and the wall automatic calibration camera is installed with a CS port 2.8-12mm lens. Both automatic calibration cameras are installed with IR-Cut, which is a 700-1100nm bandpass infrared filter to filter out the ambient visible light within the lens field of view, so as to realize image acquisition of the sponge ball movement trajectory. The infrared fill light group uses 850nm infrared light beads, the light bead emitting angle is 120 degrees, the light group is installed in 8 rows and 4 columns, and the distance between the lamp beads is 3cm. At the same time, the 4 lamp beads between the 2nd to 5th rows and the 1st and 4th columns are removed to leave the installation position of the automatic calibration infrared camera in the infrared fill light group. The wall-mounted laser module contains 3 200mw 808 wavelength laser emission heads. The recognition device is composed of an aluminum alloy shell and a transparent acrylic panel. There is a 5cm diameter opening on the transparent acrylic panel so that the automatic calibration infrared camera installed in the shell can collect image data of the ground launch area through this hole. The automatic calibration infrared camera recognition device is installed above the slingshot launch area, and there is also a 5cm diameter opening on the front side so that the automatic calibration camera installed in the shell that illuminates the wall can track and identify the point where the wall slingshot hits the curtain through this hole.

[0123] The experiencer prepares for the slingshot interaction according to the white indicator wireframe drawn on the ground lawn. When the slingshot is fired, the current departure position coordinates are recorded as StartPosition. When the slingshot leaves the launch area and passes through the middle set area, the current time of leaving the area is recorded as StartTime. Since the sponge ball head is light-colored and the floor glue background is dark, the sponge ball can be accurately identified through image thresholding. By performing a rotating rectangular length and width analysis on the identified outline of the sponge ball shot by the slingshot, the outline area of ​​the sponge ball head can be determined, and the actual sponge ball shot out and passed through the identification detection area can be detected. The flight status of the sponge ball including the initial coordinates, the initial time of shooting and the shooting angle can be recorded.

[0124] When the sponge ball ejected by the slingshot passes through the image area collected by the ground infrared camera, StartTime is recorded. When the sponge ball lands on the curtain, the wall camera collects the wall image in real time to capture the outline of the landing point. The contour position is mapped through the algorithm, and the camera image position is accurately mapped to the projection screen coordinates. The landing point position EndPosition and landing time EndTime are recorded, and the speed is calculated through the accurate distance Distance measured in space.

[0125] s=Distance / (EndTime-StartTime), angle=atan2((EndPosition.y-StartPosition.y) / (EndPosition.x-StartPosition.x))*180 / PI is calculated by the initial position coordinates StartPosition and the end point coordinates EndPosition.

[0126] The computer program embedded in the recognition device 3 tracks and stores the pixel coordinate position of the slingshot outline in each frame in continuous image frames, and records the changes in the outline and grayscale image brightness values ​​in the image of the same frame. The slingshot's longitudinal coordinate position in space can be recorded based on the brightness value, and the outline coordinate information is the horizontal coordinate position. The two coordinate mapping outputs can draw its motion trajectory in the interactive space, and the parabola trajectory is drawn on the data analysis interface.

[0127] Working principle: when playing, the player puts the ball into the serving leather bag, and then pulls the serving leather bag backwards. The left tension sensor and the right tension sensor feel the tension of the elastic rope. The tension value on the left and right sides can be known through the tension display device. The slingshot bracket as a whole can realize the left and right rotation of the slingshot iron bracket through the rotating disk. When the player lets go, the tension sensor calculates the change in tension through an algorithm to determine whether the ball is launched. The tension sensor sends the tension value and the status of whether the ball is launched to the computer program embedded in the recognition device 3 in real time. The computer program matches the tension progress bar on the screen according to the tension value. The greater the tension, the longer the progress bar.

[0128] In practical applications of the present invention, the position of the camera, the parameters of the camera, the adjustment of the computer vision algorithm, etc. can be adjusted and optimized to meet the requirements of different venues and competitions.

[0129] The technical solution provided by the present invention is further described in detail through the above specific implementation modes in order to highlight the advantages and benefits of the technical solution provided by the present invention. However, the above specific implementation modes are not intended to limit the present invention. Any reasonable modification and improvement of the present invention, combination of implementation modes and equivalent substitution within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0130] Those skilled in the art will appreciate that the above are only preferred embodiments of the present invention, and the various embodiments of the present disclosure and / or the features described in the claims may be combined or combined in various ways, even if such combinations or combinations are not explicitly described in the present disclosure. It is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or perform equivalent substitutions on some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

[0131] Although preferred embodiments of the present invention have been described, additional changes and modifications may be made to these embodiments by those skilled in the art once the basic inventive concepts are known. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An indoor slingshot entertainment device, characterized in that: The device comprises a speaker (1), a projector (2), an identification device (3), a ground camera (C1), a wall camera (C2), an identification infrared laser (4), a projection screen (5) and a sponge ball; The ground camera (C1) is used to collect ground track signals during the movement of the sponge ball, and convert the ground track signals into ground track data, and transmit them to the recognition device (3); The wall camera (C2) is used to collect the wall trajectory signal during the movement of the sponge ball, and convert the wall trajectory signal into wall trajectory data, and transmit it to the recognition device (3); The identification infrared laser (4) is used to collect the impact signal when the sponge ball hits the projection screen (5), and transmit the impact signal to the identification device (3); The recognition device (3) is used to convert the received ground track data, wall track data and impact signal into an effect simulation signal, wherein the effect simulation signal includes an audio signal and a picture / video signal, and sends the audio signal to the speaker (1) and sends the picture / video signal to the projector (2); The speaker (1) generates and sends out audio information according to the received sound effect signal; The projector (2) projects the received picture / video signal onto a projection screen (5).

2. The indoor slingshot entertainment device according to claim 1, characterized in that: The device also includes a slingshot prop device (9), which is located in front of the projection screen (5) and is used to project the sponge ball.

3. The indoor slingshot entertainment device according to claim 2, characterized in that: The slingshot prop device (9) further comprises a tension sensor and a tension display device. The tension sensor is located on the slingshot prop device (9) and is used to detect the tension of the slingshot prop device (9) in real time and convert the tension into a tension signal and send it to the tension display device. The tension display device is used to display the tension value according to the tension signal.

4. The indoor slingshot entertainment device according to claim 1, characterized in that: The device also includes a structural pipe frame (10), the structural pipe frame (10) including a top frame, two side frames and a back frame, the top frame, the two side frames and the back frame enclosing a hexahedral game space; The speakers (1) are installed on both sides of the top frame; The projector (2) is mounted on the top frame; The projection screen (5) is mounted on the back frame and covers the back frame; The identification infrared laser (4) is installed on the top of the back frame and above the middle of the projection screen (5); The recognition device (3) is mounted on the top frame and is located between the projector (2) and the infrared laser (4); The identification device (3), the projector (2) and the infrared laser (4) are located on the same straight line, and the straight line is perpendicular to the projection screen (5).

5. The indoor slingshot entertainment device according to claim 1, characterized in that: The device also includes a protective rope net (12) and a floor rubber (14); The protective rope net (12) covers the hollowed-out portion of the structural pipe frame (10); The floor glue (14) covers the ground of the game space.

6. The indoor slingshot entertainment device according to claim 1, characterized in that: The lens of the ground camera (C1) is a 130° lens.

7. The indoor slingshot entertainment device according to claim 1, characterized in that: The lens of the wall camera (C2) is a CS-mount 2.8-12mm wide-angle lens.

8. The indoor slingshot entertainment device according to claim 1, characterized in that: The ground camera (C1) and the wall camera (C2) are both infrared automatic calibration cameras.

9. The indoor slingshot entertainment device according to claim 8, characterized in that: The ground camera (C1) and the wall camera (C2) are both equipped with IR-Cut, which is a band-pass infrared filter of 700-1100nm.

10. A method for identifying a ballistic trajectory, characterized in that: The method is implemented based on the device according to any one of claims 1 to 8, the running trajectory of the sponge ball is a ballistic trajectory, the method is implemented by a computer program embedded in the identification device (3), and the method comprises the following steps: S1. Actually collecting a ground track signal, and obtaining a starting position StartPosition and a starting time StartTime when the sponge ball is launched according to the ground track signal; S2, collecting the wall trajectory signal in real time, and obtaining the landing time EndTime when the sponge ball hits the wall according to the wall trajectory signal; S3, collecting the impact signal in real time, and obtaining the landing position EndPosition of the sponge ball when it impacts according to the impact signal; S4, according to the starting position StartPosition and the landing position EndPosition when the sponge ball is launched, the travel distance Distance of the sponge ball is obtained by a spatial measurement method; S5. Obtain the speed s of the sponge ball according to the travel distance Distance, the starting time StartTime and the landing time EndTime of the sponge ball: S6. Obtain the launch angle angle of the sponge ball according to the starting position StartPosition and the landing position EndPosition of the sponge ball: S7. Obtain the running trajectory of the sponge ball according to the speed s of the sponge ball and the launching angle angle of the sponge ball.

Images