Football score judgment system based on infrared tracking

Abstract

The invention discloses a football score judgment system based on infrared tracking, which comprises a mounting shell, the mounting shell is used for mounting an infrared matrix and a clamping mechanism, the clamping mechanism comprises a worm, a double-thread screw and a worm gear, and the worm gear is in meshed connection with the worm; the two ends of the double-thread screw are in threaded connection with threaded lifting rings correspondingly, and the threaded lifting rings are connected with abutting plates through connecting lugs on the two sides and crank rods. The device further comprises a control module, an acquisition module, a data processing module, a communication module, an edge calculator, an auxiliary module and a display module. According to the invention, the mounting shell provided with the infrared matrix is embedded and mounted in the door frame through the clamping mechanism; the two clamping mechanisms are arranged, so that mounting and dismounting are facilitated; the area is calculated through the distance between the center point of the point cloud data and the edge point cloud, the football projection area is obtained, and whether the football is a goal score or not is judged by combining the proportion of the complete football projection area.

Description

Technical Field

[0001] This invention relates to the field of sports scoring technology, and more specifically to football scoring, and to a football scoring determination system based on infrared tracking. Background Technology

[0002] In football, goal determination is crucial for fairness and entertainment, and its accuracy directly impacts the match outcome. Traditionally, goal determination relies primarily on human referees who visually assess the relative positions of the ball and goal, player actions, and the rules of the game. However, human refereeing has significant limitations: First, in high-speed situations, referees struggle to accurately capture the ball's trajectory and the details of its contact with the goalposts, especially in close-range shots or when the goal frame is small, increasing the risk of misjudgment. Second, complex weather conditions (such as strong light, rain, or fog) or environmental interference (such as player obstruction) further reduce the reliability of the determination. Furthermore, the subjectivity of human refereeing can lead to disputes, affecting the fairness of the match.

[0003] In the prior art, publication number CN212467072U, entitled "A Football Goal Detection System," the system includes: a smart football, a smart football goal, and a remote detection platform. The smart football has a built-in first Zigbee module and an RSSI ranging coordinator, with the first Zigbee module connected to the RSSI ranging coordinator. The smart football goal has a first image acquisition device located at the upper left corner of the goal frame and a second image acquisition device located at the upper right corner. Inside the goal frame are a second Zigbee module, an RSSI ranging terminal, an inverted-F antenna, and a power module. The second Zigbee module is connected to the first image acquisition device, the second image acquisition device, the RSSI ranging terminal, the inverted-F antenna, and the power module. The smart football goal connects to the remote detection platform via the inverted-F antenna using a wireless sensor network. Applying the solution provided by this invention can reduce the cost of football goal detection.

[0004] In recent years, with the development of computer vision and motion capture technologies, some football matches have introduced video replay systems (such as VAR technology) to assist referees in decision-making. However, such systems still have the following problems: 1) Video analysis relies on high-definition cameras and complex image processing algorithms, which have high requirements for lighting conditions, lens angles, and network transmission stability, making it difficult to achieve completely real-time judgment; 2) The system is costly and complex to deploy, limiting its adoption in small and medium-sized matches; 3) For subtle changes in the ball's trajectory (such as slight wobbling of the goalpost) or details of the ball's contact with the goal, the recognition accuracy of existing technologies is still insufficient to meet the needs of high-requirement scenarios. In addition, traditional technologies suffer from data latency and high false recognition rates when dealing with multi-ball interference, fast-moving targets, and target tracking in dynamic scenes.

[0005] Therefore, there is an urgent need for a system that can efficiently, accurately, and in real time determine football scores in order to overcome the shortcomings of existing technologies. Summary of the Invention

[0006] One objective of this invention is to provide a new technical solution for a football scoring system based on infrared tracking.

[0007] According to a first aspect of the present invention, a football scoring system based on infrared tracking is provided, comprising a mounting housing for mounting an infrared matrix and a clamping mechanism, the infrared matrix for detecting a goal scored by the football, and the clamping mechanism for fixing the mounting housing inside the football goal frame.

[0008] The clamping mechanism is provided in two sets, respectively located at the upper and lower ends of the mounting housing. The clamping mechanism includes a worm gear installed at one end of the mounting housing, and a double-ended screw installed in the middle of the mounting housing. One end of the double-ended screw is keyed to a worm wheel, and the worm wheel meshes with the worm gear.

[0009] The two ends of the double-ended screw are respectively threaded with threaded lifting rings, and the two sides of the threaded lifting rings are respectively provided with connecting ears. The middle of the connecting ears is movably connected to a crank rod, and it also includes a clamping plate. The inner middle of the clamping plate is fixedly provided with two connecting heads, and the other ends of the upper and lower crank rods are respectively movably connected to the inside of the two connecting heads.

[0010] It also includes a control module, a data acquisition module, a data processing module, a communication module, an edge calculator, an auxiliary module, and a display module.

[0011] Furthermore, the front end face of the mounting housing is provided with a mounting groove, and the infrared matrix is ​​fixedly installed inside the mounting groove.

[0012] Furthermore, a first rod groove is provided on one side of the end of the mounting housing, a circular groove is provided in the middle of the end of the mounting housing, a second rod groove is provided in the middle of the mounting housing, and through grooves are provided on both sides of the second rod groove.

[0013] Furthermore, the worm gear is movably installed inside the first groove, the double-ended screw is movably installed inside the second groove, and the worm wheel is movably installed inside the circular groove.

[0014] Furthermore, the mounting housing has placement slots on both sides of its tail end, the crank rod and the abutment plate are movably located inside the placement slots, and the connecting lug and the connecting head are movably located inside the through slot.

[0015] Furthermore, a support ring is fixedly provided inside the first rod groove, one end of the worm gear is movably located inside the support ring, one end of the worm gear is provided with a first hexagonal inner hole, and the end face of the mounting housing is provided with a second hexagonal inner hole on one side of the first rod groove. A locking rod is installed in the first hexagonal inner hole and the second hexagonal inner hole.

[0016] Furthermore, the acquisition module is used to acquire data from the infrared matrix, which includes a transmitting array and a receiving array, and the transmitting array and the receiving array are respectively arranged on both sides of the football goal frame;

[0017] The data processing module is electrically connected to the acquisition module and is used to receive the data acquired by the acquisition module and to preprocess the acquired data information.

[0018] The control module is used to electrically connect the acquisition module, the data processing module and the communication module to control and adjust the system. The communication module is used to transmit the preprocessed data information to the edge computing device.

[0019] The edge calculator is used to analyze and process the preprocessed data and transmit the data through the communication module.

[0020] The auxiliary module is located inside the mounting housing and is used to display the result when the edge calculator analyzes whether the football has been kicked into the goal.

[0021] The display module is used to receive and play data transmitted by the communication module.

[0022] Furthermore, the edge calculator analyzes and processes the information obtained from the infrared matrix, and the analysis and processing steps are as follows:

[0023] The projected outline data of the soccer ball is obtained through the infrared light curtain array of the infrared matrix;

[0024] Canny edge detection is performed on the projected contour data of the soccer ball using an edge detection algorithm to extract the contour boundary of the soccer ball.

[0025] The projected area of ​​the soccer ball is calculated using pixel point cloud data, and then the spherical area ratio is analyzed. The ratio of the projected area of ​​the soccer ball obtained by the infrared light curtain array to the actual area of ​​the soccer ball is calculated.

[0026] The threshold for the proportion of spherical objects detected by the infrared light curtain array is set to above 90%. 球形 A goal is considered scored when the percentage is ≥90%.

[0027] Furthermore, the specific steps for calculating the projected area of ​​the football are as follows:

[0028] The trajectory of the football is constructed based on the time series, and point cloud data is generated from the data collected by the infrared light curtain array.

[0029] A distance line graph is generated based on the trajectory of the football, and the largest data value in the distance line graph is selected as the calculation point of the football.

[0030] The distance between the edge point clouds of the point cloud data of the calculation site is calculated to obtain the point cloud data center point of the calculation site.

[0031] The corresponding area is calculated based on the distance between the points in the point cloud data center and the edge point cloud to obtain the projected area of ​​the football.

[0032] Furthermore, the auxiliary module includes an LED light and a buzzer. When the edge calculator analyzes a valid score, the green light illuminates and the buzzer sounds continuously; when the edge calculator analyzes a non-score or a false trigger, the red light illuminates and the buzzer sounds briefly.

[0033] The auxiliary module also includes a storage module, which is electrically connected to the control module.

[0034] The beneficial effects of this invention are:

[0035] This invention uses a clamping mechanism to embed the mounting housing containing the infrared matrix inside the door frame, which can prevent the infrared matrix from affecting the goal of the football if it is installed on the outside, and can also prevent the goal of the football from damaging the infrared matrix, as well as reduce the impact of the environment on the infrared matrix.

[0036] The clamping mechanism has two sets, which are respectively set at the upper and lower ends of the mounting housing. The rotation of the worm gear drives the worm wheel, which in turn drives the double-ended screw, so that the lateral driving force can be converted into the vertical driving force. This enables the lifting and lowering control of the threaded lifting rings on the double-ended screw. When the two threaded lifting rings move in the same direction, they can open the abutment plate and fix it inside the goal frame. When the two threaded lifting rings move in opposite directions, the abutment plate can be retracted, which is convenient for installation and disassembly.

[0037] The system processes the collected data using an edge calculator, obtains the projected outline of the soccer ball using an infrared light curtain array, determines the outline boundary of the soccer ball through edge detection, generates a line graph of the soccer ball's movement distance using a time series, uses the soccer ball's projected outline that has moved the farthest as the soccer ball's calculation point, and calculates the area of ​​the soccer ball's projected area by the distance between the point cloud data center points and the edge point cloud. Combined with the proportion of the complete soccer ball's projected area, it determines whether the soccer ball has scored a goal.

[0038] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0039] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0040] Figure 1 This is a schematic diagram of the overall structure of a football scoring system based on infrared tracking in one embodiment;

[0041] Figure 2 This is a schematic diagram of a clamping mechanism for a soccer scoring system based on infrared tracking, as shown in one embodiment.

[0042] Figure 3 This is a schematic diagram of a partial clamping mechanism of a football scoring system based on infrared tracking in one embodiment;

[0043] Figure 4 This is a schematic diagram of the mounting housing of an infrared tracking-based soccer scoring system in one embodiment;

[0044] Figure 5 This is a center cross-sectional view of the mounting housing of an infrared tracking-based soccer scoring system in one embodiment.

[0045] Figure 6 This is a side cross-sectional view of the mounting housing of an infrared tracking-based soccer scoring system in one embodiment.

[0046] Figure 7 This is a schematic diagram of a module system for determining a soccer score based on infrared tracking, as shown in another embodiment.

[0047] The following are labeled in the diagram: 1. Socket housing; 2. Socket cover; 3. Adjustment mechanism; 301. Signal acquisition component; 3011. Positioning plate; 3012. First limit plate; 3013. Moving block; 3014. First spring; 3015. Touch rod; 3016. Sensor; 3017. Plexicon block; 3018. Cross groove; 3019. Ball bearing; 302. Mechanical control component; 3021. Rotating plate; 3022. Handheld plate; 3023. Limiting ring; 3024. Lifting plate; 3025. Adjustment groove; 3026. Limiting hemisphere; 3027. Second limiting plate; 3028. Toggle piece; 3029. Lifting rod; 30210. Pulling plate; 30211. Second spring; 30212. Plum blossom groove; 30213. Limiting groove; 30214. Gear ring; 30215. Positioning ring; 4. Socket hole. Detailed Implementation

[0048] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0049] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0050] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0051] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0052] Example 1:

[0053] like Figure 1-6 As shown, a football scoring system based on infrared tracking includes a mounting housing 1, which is used to install an infrared matrix 2 and a clamping mechanism 3. The front end face of the mounting housing 1 has a mounting groove 5, and the infrared matrix 2 is fixedly installed inside the mounting groove 5. The infrared matrix 2 is used to detect football goals, and the clamping mechanism 3 is used to fix the mounting housing 1 inside the football goal frame.

[0054] The infrared matrix 2 is fixedly installed through the mounting slot 5, and the mounting housing 1 is installed through the clamping mechanism 3, so that the mounting housing 1 can be placed inside the football goal frame and does not need to be exposed to the outside. The mounting housing 1 will not obstruct the goal of the football, nor will it be damaged by the impact of the football, nor will it be damaged by the environment.

[0055] The clamping mechanism 3 is provided in two sets, which are respectively set at the upper and lower ends of the mounting housing 1. The clamping mechanism 3 includes a worm 301 installed at one end of the mounting housing 1, and a double-ended screw 302 installed in the middle of the mounting housing 1. One end of the double-ended screw 302 is keyed to a worm wheel 303, and the worm wheel 303 is meshed with the worm 301.

[0056] A first rod groove 7 is provided on one side of the end of the mounting housing 1, a circular groove 9 is provided in the middle of the end of the mounting housing 1, a second rod groove 10 is provided in the middle of the mounting housing 1, and through grooves 11 are provided on both sides of the second rod groove 10; the worm 301 is movably installed inside the first rod groove 7, the double-ended screw 302 is movably installed inside the second rod groove 10, and the worm wheel 303 is movably installed inside the circular groove 9.

[0057] By setting the two sets of clamping mechanisms 3 as described above, the clamping mechanism 3 can maintain the balance and stability of the entire mounting housing 1, which facilitates the transmission and reception of the infrared matrix 2. The mounting housing 1 has a first groove 7 for mounting the worm gear 301, a second groove 10 for mounting the double-ended screw 302, and a circular groove 9 for mounting the worm wheel 303. This facilitates the movable installation of the worm gear 301, worm wheel 303, and double-ended screw 302. The worm gear 301 drives the worm wheel 303 to rotate, thereby realizing the power transmission to the double-ended screw 302 and realizing the change of power output direction. This makes it easier to control the clamping mechanism 3 to be fixed inside the football goal frame.

[0058] The two ends of the double-ended screw 302 are respectively threaded with threaded lifting rings 304. The two sides of the threaded lifting rings 304 are respectively provided with connecting ears 305. The middle of the connecting ears 305 is movably connected with a crank rod 308. It also includes a clamping plate 306. Two connecting heads 307 are fixedly provided in the middle of the inner side of the clamping plate 306. The other ends of the upper and lower crank rods 308 are respectively movably connected to the inside of the two connecting heads 307.

[0059] The rear end of the mounting housing 1 has two placement slots 6 on both sides. The crank rod 308 and the abutment plate 306 are movably located inside the placement slots 6. The connecting lug 305 and the connecting head 307 are movably located inside the through slot 11. A support ring 310 is fixedly installed inside the first rod slot 7. One end of the worm gear 301 is movably located inside the support ring 310. One end of the worm gear 301 has a first hexagonal inner hole 311. The end face of the mounting housing 1 has a second hexagonal inner hole 8 on one side of the first rod slot 7. A locking rod 4 is installed in the first hexagonal inner hole 311 and the second hexagonal inner hole 8.

[0060] The rotating double-headed screw 302 drives the two threaded lifting rings 304 up and down for adjustment. The diameter of the threaded lifting rings 304 is adapted to the diameter of the second rod groove 10 to maintain the stability of the threaded lifting rings 304 during the lifting adjustment process. The threaded lifting rings 304 are connected to the crank rod 308 through the connecting ears 305 on both sides and the connecting head 307 on the back of the abutment plate 306. This facilitates the lifting control of the threaded lifting rings 304 on the double-headed screw 302. When the two threaded lifting rings 304 move in the same direction, they can open the abutment plate 306 and fix it inside the goal frame. When the two threaded lifting rings 304 move in opposite directions, the abutment plate 306 can be retracted, which is convenient for installation and disassembly.

[0061] Furthermore, in order to ensure that the clamping plate 306 does not obstruct the installation and disassembly of the mounting housing 1 when it is folded up, placement slots 6 are provided on both sides of the mounting housing 1 to facilitate the storage and folding of the clamping plate 306. The through slot 11 is designed to facilitate the movable installation of the connecting ear 305 and the connecting head 307. This not only keeps the threaded lifting ring 304 from rotating, but also allows the crank rod 308 to be folded up and stored, reducing the space occupied and making it easy to store the clamping plate 306 inside the placement slot 6.

[0062] Example 2:

[0063] refer to Figure 7 It also includes a control module, a data acquisition module, a data processing module, a communication module, an edge calculator, an auxiliary module, and a display module;

[0064] The acquisition module is used to acquire data from the infrared matrix 2, which includes a transmitting array and a receiving array, which are respectively set on both sides of the football goal frame.

[0065] The data processing module is electrically connected to the acquisition module and is used to receive the data acquired by the acquisition module and to preprocess the acquired data information.

[0066] The control module is used to electrically connect the acquisition module, data processing module and communication module to control and regulate the system. The communication module is used to transmit the preprocessed data information to the edge computing device.

[0067] The edge calculator is used to analyze and process pre-processed data and transmit the data through a communication module.

[0068] The auxiliary module is located inside the mounting housing 1 and is used to display the results when the edge calculator analyzes the football being kicked into the goal;

[0069] The display module is used to receive and play data transmitted by the communication module.

[0070] The edge calculator analyzes and processes the information obtained through infrared matrix 2, and the analysis and processing steps are as follows:

[0071] The projection outline data of the football is obtained through the infrared light curtain array of infrared matrix 2;

[0072] Canny edge detection is performed on the projected contour data of the soccer ball using an edge detection algorithm to extract the contour boundary of the soccer ball.

[0073] The projected area of ​​the soccer ball is calculated using pixel point cloud data, and then the spherical area ratio is analyzed. The ratio of the projected area of ​​the soccer ball obtained by the infrared light curtain array to the actual area of ​​the soccer ball is calculated.

[0074] The threshold for the proportion of spherical objects detected by the infrared light curtain array is set to above 90%. 球形 A goal is scored when the percentage is ≥90%.

[0075] The projected shape of the soccer ball is obtained by scanning the infrared light curtain array of infrared matrix 2, and the edge of the projected shape is calculated by the edge detection algorithm to obtain an accurate soccer ball shape and improve the clarity, which is convenient for subsequent calculation and analysis. The proportion of the projected area and the area of ​​the soccer ball is calculated by combining the projection area and the threshold comparison to determine whether the goal is valid.

[0076] The theoretical area of ​​a football is calculated as follows:

[0077]

[0078] Where, r 足球 The radius of the soccer ball is represented by A, which ranges from 0.11 to 0.12 meters. π is the mathematical constant pi. 理论 This is expressed as the theoretical area of ​​the football, which is also the original area of ​​the football;

[0079] The percentage of spherical shape is calculated as follows:

[0080]

[0081] Among them, R 球形 Indicates the proportion of spherical shapes, A 足球 Let A be the projected area of ​​the scanned soccer ball. 理论 This is expressed as the theoretical area of ​​a football.

[0082] The specific steps for calculating the projected area of ​​a soccer ball are as follows:

[0083] The trajectory of the football is constructed based on the time series, and point cloud data is generated from the data collected by the infrared light curtain array.

[0084] Point cloud generation is used to convert the projected contour data of the infrared light curtain array into point cloud data. The point cloud data consists of multiple point coordinates, each point having coordinates (x, y, z). i ,y i ,z i ), where x i y i Represents the coordinates of the projection plane, z i This indicates the distance from the soccer ball to the infrared light curtain array;

[0085] Trajectory construction is used to construct the movement trajectory of a football based on time series data. The trajectory consists of multiple point cloud data points.

[0086] The trajectory is constructed as follows: trajectory = {(x i ,y i ,z i ) |i=1,2,…,n};where n represents the number of trajectory points, and i represents the i-th data point in the time series;

[0087] A distance line graph is generated based on the trajectory of the football, and the largest data value in the distance line graph is selected as the calculation point of the football.

[0088] Distance line graphs are used to calculate the z-axis distance of trajectory points. i The values ​​generate a distance line graph, with the horizontal axis representing time t and the vertical axis representing the distance z from the soccer ball to the light screen. i ;

[0089] The point corresponding to the maximum value in the distance-line graph is selected as the calculation point for the soccer ball.

[0090] That is: z max =max{z i |i=1,2,…,n};

[0091] Among them, z max The point representing the farthest distance between the soccer ball and the light screen is used as the benchmark for calculating the projected area.

[0092] The distance between the edge point clouds of the point cloud data of the calculation site is calculated to obtain the point cloud data center point of the calculation site.

[0093] The corresponding area is calculated based on the distance between the points in the point cloud data center and the edge point cloud to obtain the projected area of ​​the football.

[0094] By using point cloud computing on the soccer ball projection as described above, it is easy to calculate the scanning area of ​​the soccer ball. Furthermore, by combining the distance between the points in the point cloud data center and the edge point cloud to calculate the area, it is easy to obtain an accurate scanning area.

[0095] The calculation of point cloud data center points is as follows:

[0096]

[0097] Where, x c y c Let x and y represent the center coordinates of the point cloud data, respectively, and n represent the number of points in the point cloud data. i and y i These are respectively represented as the i-th point cloud data point;

[0098] The calculation of the distance between edge point clouds is as follows:

[0099]

[0100] Where, d i Let x represent the Euclidean distance between the i-th edge point and the center point. c ,y c (x) represents the center point of the point cloud data. i ,y i ) represents the point cloud points at the edge;

[0101] The projected area is calculated as follows:

[0102]

[0103] Among them, A 足球 This is represented as the projected area of ​​the scanned soccer ball, where π is the mathematical constant pi, and d... i denoted as the distance between the edge point and the center point, and n is the number of point cloud data points.

[0104] The auxiliary module includes LED lights and a buzzer. When the edge calculator analyzes a valid score, the green light illuminates and the buzzer sounds continuously; when the edge calculator analyzes a non-scoring or false trigger, the red light illuminates and the buzzer sounds briefly.

[0105] The auxiliary module also includes a storage module, which is electrically connected to the control module;

[0106] The auxiliary module enables auxiliary operation of the entire system, facilitating reminders of whether a goal has been scored in football and providing a clear display. The storage module stores the data for later retrieval and tracking, improving the fairness and impartiality of the game.

[0107] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A football scoring system based on infrared tracking, characterized in that: The system includes a mounting housing (1) for mounting an infrared matrix (2) and a clamping mechanism (3). The infrared matrix (2) is used to detect a goal scored in a football, and the clamping mechanism (3) is used to fix the mounting housing (1) inside the football goal frame. The clamping mechanism (3) is provided in two sets, respectively located at the upper and lower ends of the mounting housing (1). The clamping mechanism (3) includes a worm (301) installed at one end of the mounting housing (1), and a double-ended screw (302) installed in the middle of the mounting housing (1). One end of the double-ended screw (302) is keyed to a worm wheel (303), and the worm wheel (303) meshes with the worm (301). The two ends of the double-ended screw (302) are respectively threaded with threaded lifting rings (304). The two sides of the threaded lifting rings (304) are respectively provided with connecting ears (305). The middle of the connecting ears (305) is movably connected with a crank rod (308). It also includes a clamping plate (306). The inner middle of the clamping plate (306) is fixedly provided with two connecting heads (307). The other ends of the upper and lower crank rods (308) are respectively movably connected to the inside of the two connecting heads (307). It also includes a control module, a data acquisition module, a data processing module, a communication module, an edge calculator, an auxiliary module, and a display module.

2. The football scoring system based on infrared tracking according to claim 1, characterized in that: The front end face of the mounting housing (1) is provided with a mounting groove (5), and the infrared matrix (2) is fixedly installed inside the mounting groove (5).

3. The football scoring system based on infrared tracking according to claim 2, characterized in that: The mounting housing (1) has a first rod groove (7) on one side of its end, a circular groove (9) in the middle of its end, a second rod groove (10) in the middle of its middle, and through grooves (11) on both sides of the second rod groove (10).

4. The football scoring system based on infrared tracking according to claim 3, characterized in that: The worm (301) is movably installed inside the first rod groove (7), the double-ended screw (302) is movably installed inside the second rod groove (10), and the worm wheel (303) is movably installed inside the circular groove (9).

5. A football scoring system based on infrared tracking according to claim 4, characterized in that: The mounting housing (1) has placement slots (6) on both sides of its tail end. The crank rod (308) and the abutment plate (306) are movably located inside the placement slots (6), and the connecting ear (305) and the connecting head (307) are movably located inside the through slot (11).

6. A football scoring system based on infrared tracking according to claim 5, characterized in that: A support ring (310) is fixedly provided inside the first rod groove (7). One end of the worm (301) is movably located inside the support ring (310). A first hexagonal inner hole (311) is opened at one end of the worm (301). A second hexagonal inner hole (8) is opened on one side of the end face of the mounting housing (1) on the first rod groove (7). A locking rod (4) is installed in the first hexagonal inner hole (311) and the second hexagonal inner hole (8).

7. A football scoring system based on infrared tracking according to claim 1, characterized in that: The acquisition module is used to acquire data from the infrared matrix (2). The infrared matrix (2) includes a transmitting array and a receiving array, which are respectively set on both sides of the football goal frame. The data processing module is electrically connected to the acquisition module and is used to receive the data acquired by the acquisition module and to preprocess the acquired data information. The control module is used to electrically connect the acquisition module, the data processing module and the communication module to control and adjust the system. The communication module is used to transmit the preprocessed data information to the edge computing device. The edge calculator is used to analyze and process the preprocessed data and transmit the data through the communication module. The auxiliary module is located inside the mounting housing (1) and is used to display the result when the edge calculator analyzes the football being kicked into the goal. The display module is used to receive and play data transmitted by the communication module.

8. A football scoring system based on infrared tracking according to claim 7, characterized in that: The edge calculator analyzes and processes the information obtained by the infrared matrix (2), and the analysis and processing steps are as follows: The projection outline data of the football is obtained through the infrared light curtain array of the infrared matrix (2); Canny edge detection is performed on the projected contour data of the soccer ball using an edge detection algorithm to extract the contour boundary of the soccer ball. The projected area of ​​the soccer ball is calculated using pixel point cloud data, and then the spherical area ratio is analyzed. The ratio of the projected area of ​​the soccer ball obtained by the infrared light curtain array to the actual area of ​​the soccer ball is calculated. The threshold for the proportion of spherical objects detected by the infrared light curtain array is set to above 90%. 球形 A goal is considered scored when the percentage is ≥90%.

9. A football scoring system based on infrared tracking according to claim 8, characterized in that: The specific steps for calculating the projected area of ​​the football are as follows: The trajectory of the football is constructed based on the time series, and point cloud data is generated from the data collected by the infrared light curtain array. A distance line graph is generated based on the trajectory of the football, and the largest data value in the distance line graph is selected as the calculation point of the football. The distance between the edge point clouds of the point cloud data of the calculation site is calculated to obtain the point cloud data center point of the calculation site. The corresponding area is calculated based on the distance between the points in the point cloud data center and the edge point cloud to obtain the projected area of ​​the football.

10. A football scoring system based on infrared tracking according to claim 7, characterized in that: The auxiliary module includes an LED light and a buzzer. When the edge calculator analyzes a valid score, the green light illuminates and the buzzer sounds continuously; when the edge calculator analyzes a non-score or a false trigger, the red light illuminates and the buzzer sounds briefly. The auxiliary module also includes a storage module, which is electrically connected to the control module.

Images