Side line monitoring device for table tennis table and table tennis net rack

Abstract

The utility model discloses a side line monitoring device for a table tennis table and a table tennis net rack, and the side line monitoring device comprises a mounting seat and two cameras. The shooting directions of the two cameras are opposite to each other; the mounting seat is provided with a loading position for placing the camera, and a camera head of the camera is positioned on the inner side or the outer side of the loading position. According to the utility model, images of the table top of the table tennis table on the two sides of the net are shot through the two cameras which are arranged oppositely, so that the sideline balls can be accurately judged, and misjudgment in a competition process is reduced. The utility model further discloses a table tennis net rack with the monitoring device.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sports goods, and specifically relates to a sideline monitoring device for a table tennis table and a table tennis net rack. BACKGROUND

[0002] In table tennis matches, sideline or baseline edge balls often occur, at which time manual intervention is required for judgment, but the accuracy of manual intervention judgment is not objective enough. In order to improve the judgment accuracy of sideline or baseline edge balls, some competition venues use hawk eye technology to judge sideline or baseline edge balls, but the hawk eye technology has problems such as high equipment cost, large equipment size, and the need to place equipment around the venue, which will affect the integrity of the venue, and too many cables will have a great potential impact on the competition and even the safety of athletes. SUMMARY

[0003] To solve the above at least one technical problem, the application provides a sideline monitoring device for a table tennis table and a table tennis net rack, which is small in size, low in cost, and can accurately judge sideline balls.

[0004] The utility model discloses a sideline monitoring device for a table tennis table, which is installed on a table tennis table and comprises:

[0005] A mounting seat and two cameras; the shooting directions of the two cameras are opposite to each other;

[0006] The mounting seat is provided with a loading position for placing the cameras, and the camera head of the camera is located inside or outside the loading position.

[0007] The utility model can accurately judge sideline balls and reduce misjudgment during the competition by using two cameras oppositely arranged to shoot the tabletop of the table tennis table on both sides of the net. In addition, the whole device is small in size and low in cost, and can be directly installed on the table tennis table, which is convenient to use.

[0008] As a preferred scheme, the camera head of the camera is located inside the loading position, and the mounting seat is provided with a shooting window to enable the camera in the loading position to shoot through the shooting window.

[0009] The shooting window can provide shooting conditions for the camera, and has a simple structure and is convenient to process.

[0010] As a preferred scheme, the caliber of the shooting window and the distance between the shooting window and the camera are both smaller than the diameter of the table tennis ball. In this way, the table tennis ball will not hit the camera during the competition, effectively protecting the camera.

[0011] As a preferred solution, the shooting window is provided with a transparent protective sheet.

[0012] The protective sheet can protect the camera from being hit by the ping-pong ball, and prevent dust and other foreign matters from entering the camera loading position from the window.

[0013] As another preferred solution, the protective sheet is a convex lens, which can enlarge the view angle of the camera and make the shooting image clearer.

[0014] A limiting mechanism is arranged between the mounting seat and the camera.

[0015] The limiting mechanism comprises two first limiting members inserted into the mounting seat, and a limiting area for placing the camera in a first direction is formed between the two first limiting members.

[0016] The first limiting members can avoid the camera from shaking and thus affecting the shooting effect and the judgment of the sideline ball.

[0017] The limiting mechanism further comprises a second limiting member, which is inserted into the loading position to limit the camera in a second direction perpendicular to the first direction.

[0018] By arranging the second limiting member on the basis of the first limiting member, the camera is placed and limited in multiple directions, so as to further fix the camera and prevent the normal shooting of the camera during the match due to the vibration of the ping-pong table, in other words, to avoid the inconsistency between the shooting image and the actual image due to the vibration of the table, so as to avoid the misjudgment after watching the shooting image.

[0019] The utility model discloses still disclose a kind of ping-pong net rack, it includes two above-mentioned sideline monitoring devices, and net;The both ends of the net are detachably connected on two mounting seats.

[0020] The sideline monitoring device is integrated in the rack, which can effectively reduce the floor area of the table, thereby better ensuring the fairness of the match.

[0021] The two cameras on any one mounting seat are located on the two sides of the net respectively.

[0022] The structure is simple, so that the table area on the two sides of the net is consistent, thereby further ensuring the fairness of the match.

[0023] Compared with the prior art, the present application has the following beneficial effects:

[0024] This invention uses two cameras positioned back-to-back to capture images of the tabletops on both sides of the net, enabling accurate judgment of balls off the sidelines and reducing misjudgments during the game. In addition, the entire device is compact, inexpensive, and can be directly installed on the tabletop for easy use.

[0025] Some of the additional features of this application will be described in the following description. These additional features will become apparent to those skilled in the art upon examination of the following description and the accompanying drawings, or upon understanding the production or operation of the embodiments. The features disclosed in this application can be implemented and achieved through the practice or use of various methods, means, and combinations thereof with respect to the specific embodiments described below. Attached Figure Description

[0026] The accompanying drawings, which are provided to further illustrate this application and constitute a part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute a limitation thereof. In the drawings, the same reference numerals denote the same components.

[0027] Figure 1 This is a structural diagram of the edge monitoring device of this utility model.

[0028] Figure 2 This is a cross-sectional view of the edge monitoring device of this utility model.

[0029] Figure 3 This is a schematic diagram of the table tennis net frame of this utility model.

[0030] The reference numerals in the above figures are as follows: 1-mounting base, 2-loading position, 3-camera, 4-net pole, 5-shooting window, 6-hole, 7-first limiting member, 8-second limiting member, 9-locking member, 10-bayonet, 11-net, 12-ping-pong table. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments.

[0032] like Figure 1 , 2 As shown, this embodiment discloses a sideline monitoring device for a ping-pong table, which is installed in the middle of the ping-pong table 12. Specifically, the sideline monitoring device for the ping-pong table includes: a mounting base 1 and two cameras 3; the two cameras 3 shoot in opposite directions, thus enabling them to capture images of the tabletop on both sides of the net 11. It can be understood that the cameras 3 can also be aimed at only the sideline of the ping-pong table for shooting.

[0033] The mounting base 1 is provided with two loading positions 2 for placing cameras, in this embodiment, two cameras 3 are placed into the two loading positions 2 from top to bottom directly, and the loading is convenient. When the cameras 3 are installed in the loading positions 2, the camera heads of the cameras 3 are located inside the loading positions 2, and correspondingly, the mounting base 1 is provided with a shooting window 5, so that the cameras 3 located in the loading positions 2 can shoot the images of the table surfaces on both sides of the net 11 through the shooting window 5. Generally, the upper part of the loading position 2 has a loading port, that is, the cameras 3 are placed into the loading positions 2 from the loading port, and further, the loading port is provided with a cover body matched therewith, so as to protect the cameras 3 and prevent dust or foreign matters from entering the loading position 2 from the loading port.

[0034] The caliber of the shooting window 5 and the distance between the shooting window 5 and the camera 3 are both less than the diameter of the table tennis ball. In this way, during the match, the table tennis ball cannot hit the camera 3, and the camera 3 is effectively protected.

[0035] As another optional implementation manner of this embodiment, a transparent protective sheet is arranged on the shooting window 5, and the protective sheet is made of transparent material, such as glass, acrylic plate, etc. Arranging the protective sheet on the shooting window 5 can not only protect the camera 3 from being hit by the table tennis ball, but also prevent dust and other foreign matters from entering the inside of the loading position 2 from the shooting window 5. In the case that the protective sheet is installed on the shooting window 5, the size of the shooting window 5 can no longer be limited according to the above-mentioned size, and the shooting window 5 only needs to not affect the normal shooting of the camera 3.

[0036] In specific implementation, the protective sheet can be implemented by using a convex lens, and the convex lens can enlarge the view angle of the camera 3, so that the shot image is clearer.

[0037] Of course, in implementation, the mounting base 1 can also not be provided with the shooting window 5, and the side wall of the mounting base 1 facing the camera head of the camera 3 can be made of transparent material, so that the camera 3 can directly shoot the picture outside the mounting base.

[0038] In some other embodiments, after the camera 3 is installed in the loading position 2, the camera head of the camera 3 is located outside the loading position 2, and in this case, a transparent protective sleeve can be wrapped on the camera head of the camera 3.

[0039] In order to better fix the camera 3, the embodiment is provided with a limiting mechanism between the mounting base 1 and the camera 3. The limiting mechanism includes two first limiting pieces 7 inserted into the mounting base 1, and a limiting area for placing the camera 3 in a first direction is formed between the two first limiting pieces 7.

[0040] Specifically, the mounting seat 1 is provided with four insertion holes 6, and two insertion holes 6 form a group, and two groups of insertion holes 6 are communicated with two loading positions 2, respectively. Correspondingly, the number of the first limiting members 7 is four, and the four first limiting members 7 are inserted into the four insertion holes 6, respectively. Thus, the four first limiting members 7 form a group in the first direction and limit the camera 3. It can be understood that the number of the first limiting members 7 can also be two, that is, two loading positions 2 share the first limiting members 7.

[0041] The limiting mechanism further comprises a second limiting member 8, which penetrates the loading position 2 to limit the camera 3 in the second direction, and the second direction is perpendicular to the first direction. In some embodiments, the second limiting member only penetrates the loading position, at this time, the second limiting member 8 and the first limiting member 7 are arranged staggered, and at least one end of the second limiting member 8 is located outside the mounting seat 1 to facilitate pulling, thereby facilitating the installation or disassembly of the second limiting member 8. In this embodiment, the second limiting member 8 penetrates the loading position 2 and penetrates the first limiting member 7 matched therewith, which can not only achieve the effect of the above-mentioned case, but also avoid the first limiting member 7 from sliding off the mounting seat 1. When arranged, the second limiting member 8 penetrates the two first limiting members 7 in the same group, which can fix the two first limiting members 7 and limit the camera 3 from the second direction. It should be noted that in this embodiment, the first direction refers to the width direction of the table tennis table 12, and the second direction refers to the length direction of the table tennis table 12.

[0042] In some other embodiments, the limiting of the camera 3 can also be achieved by a sliding groove and sliding block mechanism. Specifically, one of the mounting seat 1 and the camera 3 is provided with a sliding rail, and the other is provided with a sliding groove, and the sliding rail is arranged along the mounting direction of the camera 3 in the loading position 2 (from top to bottom). Thus, not only can the detachable connection of the mounting seat 1 and the camera 3 be achieved, but also the vibration of the table tennis table can be avoided to cause poor shooting effect. In some other embodiments, a fastener such as a bolt is directly used to fix the camera in the loading position 2, that is, the camera 3 is fixed to the inner wall of the mounting seat 1.

[0043] Specifically, if the sliding rail is arranged on the camera 3, the sliding rail can be directly formed on the camera 3 or arranged on the machine body protective sleeve, which is a accessory for protecting the camera. If the sliding groove is arranged on the camera 3, the same as the sliding rail arranged on the camera.

[0044] Based on the above-mentioned embodiments, the present embodiment further discloses a table tennis net frame, which comprises two sideline monitoring devices as described above and a net 11. The two ends of the net 11 are detachably connected to the two mounting seats 1, and the two cameras 3 on any one mounting seat 1 are located on the two sides of the net 11 to shoot the table surface images on the two sides of the net 11.

[0045] The table tennis net frame and sideline monitoring device can be separately provided in a split type or integrally provided. When the two are separately provided, extra space of the table is occupied, so that the movable space of the table tennis on the table is reduced, and the hitting between the two players is affected. Therefore, as a preferred technical solution, in the embodiment, the monitoring device is integrated into the net frame, the structure is simple, the space occupied is small, the original structure is easily transformed, the movable space of the table tennis on the table is maintained, the hitting between the players is not affected, and the fairness of the game is ensured.

[0046] Further, any one mounting seat 1 is provided with a net rod 4 for fixing the net 11, and the two cameras 3 on each mounting seat 1 are respectively located on the two sides of the net 11.

[0047] In use, the net 11 is detachably assembled on the net rod 4, so that the monitoring device has sideline ball monitoring and can also be used as a net pulling tool.

[0048] In order to better fix the mounting seat 1 on the table tennis table 12, as another optional implementation manner of the embodiment, the mounting seat 1 is provided with a socket 10 capable of being clamped with the table tennis table 12, and the socket 10 is provided with a locking piece 9 for locking the mounting seat 1 on the table tennis table 12. The locking piece 9 includes a pressing table with a screw rod and a locking nut; the screw rod and the mounting seat 1 are slidingly fitted along the height direction of the table, when the pressing table presses the table on the upper side of the socket 10, the locking nut is used to abut against the bottom surface of the mounting seat 1, so that the installation of the monitoring device is realized.

[0049] In the embodiment, the two cameras 3 arranged opposite to each other shoot image videos of the table surfaces of the table tennis tables 12 on the two sides of the net 11, through the replay video, the camera can provide evidence for the judgment in the case that the players have objections to the sideline ball judgment or the referee cannot clearly observe, so that the misjudgment is reduced, that is, the embodiment can accurately judge the sideline ball, in addition, the image analysis method can also be used to realize the automatic recognition; in addition, the whole device is small in size and low in cost, and can be directly installed on the table tennis table 12, which is simple and easy to operate; the embodiment also does not need to lay too many wires on the court to avoid safety hazards.

[0050] It should be noted that all the features disclosed in the specification, or the steps in all the methods or processes disclosed, can be combined in any manner, except for the mutually exclusive features and / or steps.

[0051] In addition, the above specific embodiments are exemplary, and those skilled in the art can think of various solutions under the inspiration of the disclosure of the utility model, and these solutions also belong to the disclosed range of the utility model and fall within the protection scope of the utility model. Those skilled in the art should understand that the utility model specification and its drawings are all illustrative and do not constitute a limitation on the claims. The protection scope of the utility model is defined by the claims and their equivalents.

Claims

1. A sideline monitoring device for a ping-pong table, installed on a ping-pong table (12), characterized in that, include: Mounting base (1) and two cameras (3); the two cameras (3) are shooting in opposite directions; The mounting base (1) is provided with a mounting position (2) for placing a camera, and the camera of the camera (3) is located inside or outside the mounting position (2).

2. The edge monitoring device for a ping-pong table according to claim 1, characterized in that, The camera (3) is located inside the loading position (2), and the mounting base (1) is provided with a shooting window (5) so that the camera (3) located in the loading position (2) can shoot through the shooting window (5).

3. The edge monitoring device for a ping-pong table according to claim 2, characterized in that, The diameter of the shooting window (5) and the distance between the shooting window (5) and the camera (3) are both smaller than the diameter of a ping-pong ball.

4. The edge monitoring device for a table tennis table according to claim 2, characterized in that, A transparent protective sheet is provided on the shooting window (5).

5. The edge monitoring device for a table tennis table according to claim 4, characterized in that, The protective sheet is a convex lens.

6. The edge monitoring device for a table tennis table according to claim 1, characterized in that, A limiting mechanism is provided between the mounting base (1) and the camera (3).

7. The edge monitoring device for a table tennis table according to claim 6, characterized in that, The limiting mechanism includes two first limiting members (7) inserted into the mounting base (1), forming a limiting area for placing the camera (3) in a first direction between the two first limiting members (7).

8. The edge monitoring device for a table tennis table according to claim 7, characterized in that, The limiting mechanism further includes a second limiting member (8), which passes through the loading position (2) to limit the camera (3) in a second direction, which is perpendicular to the first direction.

9. A table tennis net frame, characterized in that, It includes two sideline monitoring devices as described in any one of claims 1 to 8, and a ball net (11); the two ends of the ball net (11) are detachably connected to two mounting bases (1).

10. The table tennis net frame according to claim 9, characterized in that, Two cameras (3) on any one of the mounting bases (1) are located on opposite sides of the net (11).

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