Recognition device based on chess and card data reading and card sorting machine

Abstract

The utility model provides an identification device based on chess and card data reading, and belongs to the technical field of card arranging machines. Comprising a recognition device used for reading chess and card data, a chess and card sensing area used for containing chess and cards to be recognized and a control module. The recognition device is arranged opposite to the detection face of a to-be-recognized chess and card, the output end of the recognition device is connected with the input end of the control module, and the recognition device conducts recognition based on the distance signal difference between the concave-convex structure of the chess and card character mark face and the plane structure of the chess and card back face. The identification device is a contact type identification device or a non-contact type identification device; the contact type recognition device is directly in physical contact with the chess and card to be recognized; the non-contact recognition device does not make physical contact with the chess and card to be recognized. The contact type recognition device is an inductive sensor, a capacitive sensor or a linear displacement sensor. The non-contact identification device is a laser range finder, an ultrasonic detector, a photoelectric sensor or a machine vision system. The technical problem that in the prior art, color recognition card face precision is poor is solved.

Description

TECHNICAL FIELD

[0001] The application relates to an identification device based on reading chess data and a card shuffler, and belongs to the technical field of card shufflers. BACKGROUND

[0002] The non-magnetic chess in the prior art uses a color sensor as a front-back surface identification sensor, and the front-back surface of the chess needs to be calibrated when the color sensor is used, and then identification is performed according to the calibration result. However, the color of the chess is not uniform, and the color position of each mahjong tile is different. The non-uniform color position of the chess leads to low accuracy of the front-back surface identification of the mahjong tile using the color sensor, and there is a situation that the front and back colors are similar. In this case, the identification accuracy is even worse.

[0003] Therefore, the technology of identifying the front and back surfaces of the chess using the color sensor cannot meet the existing demand, and an identification device with high accuracy of identifying the front and back surfaces of the chess is urgently needed. CONTENT OF THE INVENTION

[0004] In the following, a brief summary of the present application is given in order to provide a basic understanding of some aspects of the present application. It should be understood that this summary is not an exhaustive overview of the present application. It is not intended to identify key or important parts of the present application nor is it intended to limit the scope of the present application. Its only purpose is to present some concepts in a simplified form as a prelude to the more detailed description that follows later.

[0005] In view of this, in order to solve the technical problem of poor precision of color identification tile surface in the prior art, the present application provides an identification device based on reading chess data.

[0006] Scheme one, an identification device based on reading chess data, characterized in that it comprises an identification device for reading chess data, a chess sensing area for accommodating the chess to be identified, and a control module; the identification device is arranged opposite to the detection surface of the chess to be identified, the output end of the identification device is connected to the input end of the control module, and the identification device identifies based on the distance signal difference between the concave-convex structure of the chess mark surface and the plane structure of the back surface of the chess.

[0007] Preferably, the identification device is a contact type identification device or a non-contact type identification device; the contact type identification device directly physically contacts the chess to be identified; and the non-contact type identification device does not physically contact the chess to be identified.

[0008] Preferably, the contact recognition device comprises a contact rod, a contact head, a position sensor and a control module, the contact head is arranged at one end of the contact rod, the other end of the contact rod is connected with the position sensor, and the position sensor is connected with the control module; the contact head is used to respond to the concave-convex marks of the mahjong tiles to generate actions, the position sensor is used to generate signals in response to the actions of the contact head, and the control module is used to receive the signals output by the position sensor.

[0009] Preferably, the contact rod comprises a detection part, an elastic part and a support part; one end of the detection part is in physical contact with the chessboard through the contact head, and the other end is connected with the support part through the elastic part; the rear end of the support part is connected with the position sensor; and the position sensor is connected with the control module.

[0010] Preferably, the contact rod is at least two, and is distributed based on the center point of the height of the chessboard.

[0011] Preferably, the contact rod is arranged at the edge of the chessboard, and is used to identify the spacing signal of the chessboard.

[0012] Preferably, the contact recognition device is a three-coordinate measuring machine, a joint arm measuring machine, an inductive sensor, a capacitive sensor, a potentiometer sensor or a linear displacement sensor.

[0013] Preferably, the non-contact recognition device is a linear variable differential transformer, a laser range finder, an ultrasonic detector, a photoelectric sensor or a machine vision system.

[0014] Preferably, the recognition device is at least one.

[0015] Preferably, the base is further included, the chessboard sensing area and the recognition device are arranged on the base; and the recognition device is arranged on one side of the chessboard sensing area.

[0016] Preferably, the recognition device further comprises a positioning module, and an output end of the positioning module is connected with an input end of the control module.

[0017] Preferably, the recognition device further comprises a displacement structure, and the laser range finder is arranged at a displacement end of the displacement structure; and the displacement structure is a linear displacement structure or a circumferential displacement structure.

[0018] Preferably, the reflecting mirror is further included, and the reflecting mirror is arranged on the driving structure, and the reflecting mirror makes the detection light in linear motion or circumferential motion or follow the up-down motion of the mahjong tiles.

[0019] Scheme II: A tile sorting machine, the tile sorting machine comprises the recognition device based on reading chess data according to scheme I.

[0020] Preferably, the card shuffler is a mahjong machine or a backgammon machine or a rummy machine.

[0021] The utility model has the advantages of the following:

[0022] The utility model is suitable for a wide range of applications, and can be applied to both magnetic and non-magnetic chess and card games.

[0023] The utility model breaks through the traditional magnetic chess and card game structure and places the magnetic identification surface, beautifying the appearance of the customized chess and card game.

[0024] Compared with the prior art, the utility model has high recognition accuracy.

[0025] The utility model has high detection efficiency.

[0026] The utility model has the advantages of simple structure, easy installation, easy maintenance and low cost. BRIEF DESCRIPTION OF DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0028] Figure 1 It is a structure diagram of a contact type identification device;

[0029] Figure 2 It is a structure diagram of a non-contact type identification device;

[0030] Figure 3 It is a structure diagram of a contact rod;

[0031] Figure 4 It is a structure diagram of a contact type identification device;

[0032] Figure 5 It is a side view of a contact type identification device;

[0033] Figure 6 It is a structure diagram of a vertical displacement laser identification device driven by a crank slider;

[0034] Figure 7 It is a structure diagram of a vertical displacement laser identification device driven by a gear;

[0035] Figure 8 It is a structure diagram of a vertical circular motion laser identification device;

[0036] Figure 9 It is a structure diagram of a horizontal circular motion laser identification device.

[0037] In the diagram, 1-contact identification device; 2-chess / card game; 3-chess / card game sensing area; 4-contact rod; 5-contact head; 6-position sensor; 41-detection unit; 42-elastic part; 43-support part; 7-non-contact identification device; 8-displacement structure. Detailed Implementation

[0038] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0039] Example 1, Reference Figures 1-5 This embodiment describes a recognition device based on reading card and board game data. Card and board games with raised or recessed lettering on the front include mahjong tiles, dominoes, and lattice tiles. This embodiment uses mahjong tiles as an example. In existing technology, the front of a mahjong tile with lettering is generally recessed. Therefore, the front and back of the mahjong tile can be identified based on the recess on the side with lettering. The mahjong tiles move along a track with their front and back sides facing each other. The recognition device is located on one side of the track and identifies the front and back of the mahjong tile by detecting the raised or recessed lettering data on the front. Specifically, it includes: a recognition device for reading card and board game data 2, a card and board game sensing area 3 for accommodating the card and board to be identified, and a control module. The recognition device is positioned opposite the detection surface of the card and board to be identified 2. The output end of the recognition device is connected to the input end of the control module. The recognition device identifies the card and board based on the distance signal difference between the raised or recessed structure of the card and board's lettering surface and the planar structure of the card and board's back.

[0040] The identification device is either a contact identification device 1 or a non-contact identification device 7; the contact identification device 1 makes direct physical contact with the chess piece 2 to be identified; the non-contact identification device 7 does not make physical contact with the chess piece 2 to be identified.

[0041] The contact recognition device 1 includes a contact rod 4, a contact head 5, a position sensor 6, and a control module. The contact head 5 is disposed at one end of the contact rod 4, and the other end of the contact rod 4 is connected to the position sensor 6. The position sensor 6 is connected to the control module. The contact head 5 is used to generate an action in response to the raised or recessed characters on the mahjong tile. The position sensor is used to generate a signal in response to the action of the contact head 5. The control module is used to receive the signal output by the position sensor 6.

[0042] The contact rod 4 includes a detection part 41, an elastic part 42, and a support part 43; one end of the detection part 41 is in physical contact with the chess piece 2 through a contact 5, and the other end is connected to the support part 43 through the elastic part 42; the rear end of the support part 43 is connected to a position sensor 6.

[0043] The detection unit 41 and the elastic unit 42 can be hinged or integrally connected, ensuring that the detection unit 41 is in a downward pressing trend and can only be lifted after contacting the mahjong tile. Upon contact with the mahjong tile, the elastic body begins to store energy, causing the contact point of the contact rod to exert pressure on the mahjong tile. When there is a dent in the mahjong tile, the contact point of the contact rod will enter the dent, causing the contact rod to move, and a signal will be received from the position sensor 6. The elastic unit 42 provides a spring force for the detection unit 41 to return to its original position, providing support for the contact rod 4. Furthermore, while providing support, it also allows the movement of the contact 5 to be transmitted to the electromagnetic induction sensor with low loss.

[0044] The position sensor 6 can be an electromagnetic induction sensor, a pressure conversion sensor, or a distance detection sensor;

[0045] Taking an electromagnetic induction sensor as an example, this embodiment is illustrated as follows: The electromagnetic induction sensor includes a coil and a magnet. One end of the elastic part 42 is connected to the detection part 41, and the other end is connected to the magnet. The coil is fixed on the detection part 41; or one end of the elastic part 42 is connected to the detection part 41, and the other end is connected to the coil. The magnet is fixed on the detection part 41. The movement of the contact 5 will cause the elastic part 42 to move, so the magnet will move relative to the coil. Then the metal wire in the coil will cut the magnetic field lines, thereby generating an electromotive force at both ends of the coil wire. By detecting the electromotive force at both ends of the coil conductor, the action signal of the contact can be obtained.

[0046] There are at least two contact rods 4, which are distributed around the center point of the height of the chessboard 2.

[0047] Taking the contact recognition device 1 with 5 contact rods 4 as an example, the working principle of this embodiment is explained to identify the front and back of the mahjong tiles: The mahjong tiles pass through the contact recognition device 1 in a uniform order. The contact recognition device 1 is equipped with 5 contact rods 4, each contact rod 4 including a detection part 41, a spring part 42, and a support part 43; the detection part 41 is suspended, one end of which is in physical contact with the mahjong tile 2 through a contact 5, and the other end is connected to the support part 43 through the spring part 42; each contact rod 4 has a contact 5 on its detection part 41, and the contact 5 is used to contact the detection surface of the mahjong tile. The detection surface of the mahjong tile is the surface of the mahjong tile. The front and back of the mahjong tile are identified by the contact 5, which can be a position sensor 6 configured to generate a signal in response to the action of the contact 5. By comparing the signals on the five contact rods, the front and back of the mahjong tile can be identified. Specifically, for these five contact rods, if they are in contact with the back of the mahjong tile, the action signals of the five contact rods are consistent because the back of the mahjong tile is flat, so the action signals of the five tactile senses will not change. If they are in contact with the front of the mahjong tile, which has indentations, then at least one of the five contact rods will act, and the action signals of the five contact rods will be inconsistent because the front of the mahjong tile is uneven, so the action signals of the five tactile senses will change.

[0048] The contact identification device 1 is a coordinate measuring machine, an articulated arm measuring machine, an inductive sensor, a capacitive sensor, a potentiometer sensor, or a linear displacement sensor.

[0049] The non-contact identification device 7 is a linear variable differential transformer, a laser rangefinder, an ultrasonic detector, a photoelectric sensor, or a machine vision system.

[0050] The identification device is at least one. When the identification device is a laser rangefinder, the laser rangefinder has better detection accuracy for stationary objects, but its accuracy is relatively poor for moving objects. Since mahjong tiles are moving, the detection range of the laser rangefinder on the mahjong tile is a trajectory line parallel to the direction of movement. Because there are many types of mahjong tiles, there is no single trajectory line that allows all the indentations on the mahjong tiles to pass through this trajectory line. Therefore, based on this situation, this embodiment can increase the number of laser rangefinders, and the laser rangefinders can be set at different heights. By setting multiple laser rangefinders at different heights, multiple detection trajectory lines at different heights are generated, and the accuracy of the identification device can be improved by using multiple detection trajectory lines.

[0051] This embodiment explains the principles of the laser rangefinder, ultrasonic detector, inductive sensor, and capacitive sensor in the identification device; the principles of other identification devices will not be elaborated.

[0052] The laser rangefinder works by emitting a laser beam at the mahjong tile. The laser pulse is received by a laser receiver, and the reflected pulse is captured by the receiver. The distance is determined by calculating the time it takes for the laser pulse to reach the target and return to the receiver. The back of the mahjong tile is smooth and flat, so the distance is fixed. However, the front of the mahjong tile has characters and indentations, so the distance is greater than that of the back. This allows the front and back of the mahjong tile to be detected. The signal is then transmitted to the tile-flipping mechanism to guide it to flip the tile correctly.

[0053] The ultrasonic detector works on the following principle: an ultrasonic transmitter emits ultrasonic waves towards the mahjong tile, and an ultrasonic receiver receives the echo. If the echo is a flat surface, the back of the mahjong tile is being detected. If the echo is mostly flat but contains noise, the front of the mahjong tile is being detected. The noise is the echo from the indentations on the front of the tile. The noise signal generated by the uneven surface of the tile and the planar waveform signal generated by the flat surface of the back of the tile create a distance signal difference, thus detecting the front and back of the mahjong tile. This signal is then transmitted to the tile-flipping mechanism to guide it to flip the tile correctly.

[0054] The detection principle of the inductive sensor is as follows: The inductive sensor makes direct physical contact with the tile to be detected (2). When the inductive sensor contacts the raised or recessed markings on the tile, it causes a change in magnetic resistance. When the magnetic resistance in the magnetic circuit changes, the inductance of the coil also changes accordingly, thus causing a change in the output signal. At this time, the tile to be detected is the front side. When the inductive sensor contacts the tile without raised or recessed markings, there is no change in magnetic resistance. At this time, the tile to be detected is the back side. The magnetic resistance change signal generated by the raised or recessed markings on the tile's surface and the signal generated by the lack of magnetic resistance change on the back side of the tile create a distance signal difference. This is how the front and back sides of the mahjong tile are detected. Then, the front and back signals can be transmitted to the tile-flipping structure to guide the tile-flipping structure to flip the tile correctly.

[0055] The detection principle of the capacitive sensor is as follows: The capacitive sensor makes direct physical contact with the tile to be detected (2). When the capacitive sensor contacts the raised or recessed characters on the tile, it causes a change in capacitance. At this time, the tile to be detected is the front side. When the capacitive sensor contacts the tile without raised or recessed characters, there is no change in capacitance. At this time, the tile to be detected is the back side. The capacitance change caused by the raised or recessed structure on the tile's surface and the lack of capacitance change on the back side of the tile create a distance signal difference. This is how the front and back sides of the mahjong tile are detected. Then, the front and back signals can be transmitted to the tile-flipping mechanism to guide the tile-flipping mechanism to flip the tile correctly.

[0056] Example 2 differs from Example 1 in that the contact rod 4 is provided at the edge of the chess piece 2 to identify the interval signal of the chess piece 2.

[0057] For all the mahjong tiles 2, the area near the edge of the tile 2 is flat. By setting contact rods 4 at the edge of the tile 2 and classifying the contact rods 4, the interval signal between two mahjong tiles can be identified. Even if the mahjong tiles are not adjacent but separated, the interval signal between the two mahjong tiles can still be identified.

[0058] Example 3 differs from Examples 1 and 2 in that the identification device further includes a base, and the chess and card game sensing area 3 and the identification device are disposed on the base. The identification device is disposed on one side of the chess and card game sensing area 3.

[0059] Example 4 differs from Examples 1, 2, and 3 in that the identification device further includes a positioning module, the output of which is connected to the input of the control module.

[0060] The following uses a laser rangefinder as an example to illustrate this embodiment:

[0061] The positioning module collects the position signal of the card to be identified 2 and transmits the collected signal to the control module. The control module controls the laser emitter to emit a laser towards the card to be detected 2, and the laser receiver captures the reflected pulse. By calculating the time required for the laser pulse to encounter the card to be detected 2 and return to the laser receiver, the distance value is determined to determine the front or back of the card to be detected 2. Then, the front or back signal can be transmitted to the card flipping structure to control the card flipping structure to flip the card correctly.

[0062] The positioning module is a position sensor, limit switch, proximity switch, photoelectric switch, encoder, ultrasonic sensor, or vision sensor.

[0063] The control module is a PLC, microprocessor, single-chip microcomputer, industrial computer, or distributed control system.

[0064] Example 5, Reference Figures 6-9 The difference from Embodiments 1, 2, 3, and 4 is that when the identification device is a laser rangefinder, the identification device also includes a displacement structure, and the laser rangefinder is set at the displacement end of the displacement structure; the displacement structure is a linear displacement structure or a circular displacement structure.

[0065] To address the issue that with a wide variety of mahjong tiles, laser rangefinders cannot find a single trajectory line that allows all the indentations on the tiles to pass through, thus reducing the accuracy of the laser recognition device, this embodiment proposes a solution where the laser rangefinder is positioned at the displacement end of a displacement structure. This results in more indentations along the scanned trajectory line, enabling the detection of both the front and back sides of various mahjong tiles.

[0066] Displacement structure 8 is either a linear displacement structure or a circular displacement structure; the linear displacement structure refers to...Figures 6-7 As shown, Figure 6 A schematic diagram of a vertical displacement laser rangefinder driven by a crank-slider. Figure 7 This is a schematic diagram of a gear-driven vertical displacement laser rangefinder; the circumferential displacement structure is referenced. Figures 8-9 As shown, Figure 8 A schematic diagram of a vertical circular motion laser rangefinder. Figure 9 This is a schematic diagram of a horizontal circular motion laser rangefinder.

[0067] A laser rangefinder is installed at the displacement end of a linear displacement structure to achieve vertical or horizontal displacement in different ways; this embodiment... Figure 6 It is a crank-slider driven displacement structure. Figure 7 It is a gear-driven displacement structure.

[0068] The laser rangefinder is installed at the displacement end of the circumferential displacement structure, and the laser recognition device can be installed vertically or horizontally on the circumferential displacement structure to achieve circumferential displacement.

[0069] Example 6 differs from Examples 1, 2, 3, 4, and 5 in that the identification device further includes a reflector, which is mounted on the driving structure. The three-degree-of-freedom motion platform drives the reflector, causing the detection light to move in a straight line, in a circular motion, or to follow the up-and-down movement of the mahjong tile. This allows for scanning a larger area on the mahjong tile, resulting in pits along the scanning trajectory, thereby detecting the front and back of the mahjong tile.

[0070] The drive structure can also be used to drive the reflector of a parallel robotic arm.

[0071] Example 7: A card sorting machine, the card sorting machine including the identification device based on reading card game data described in Example 1, Example 2, Example 3, Example 4, Example 5, and Example 6.

[0072] The card sorting machine is a mahjong machine, a domino machine, or a tile sorting machine.

[0073] Although the present invention has been described with reference to a limited number of embodiments, those skilled in the art will understand from the foregoing description that other embodiments are conceivable within the scope of the present invention described herein. Furthermore, it should be noted that the language used in this specification has been chosen primarily for readability and edibility purposes, and not for interpreting or limiting the subject matter of the invention. Therefore, many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the appended claims. Regarding the scope of the invention, the disclosure made is illustrative and not restrictive, and the scope of the invention is defined by the appended claims.

Claims

1. A recognition device based on reading chess and card game data, characterized in that, It includes an identification device for reading data of a chess and card game (2), a chess and card game sensing area (3) for accommodating the chess and card game (2) to be identified, and a control module; the identification device is set opposite to the detection surface of the chess and card game (2) to be identified, the output end of the identification device is connected to the input end of the control module, and the identification device identifies based on the distance signal difference between the concave and convex structure of the chess and card game letter marks and the planar structure of the back of the chess and card game.

2. The identification device based on reading chess and card game data according to claim 1, characterized in that, The identification device is a contact identification device (1) or a non-contact identification device (7); the contact identification device (1) makes direct physical contact with the chess piece (2) to be identified; the non-contact identification device (7) does not make physical contact with the chess piece (2) to be identified.

3. The identification device based on reading chess and card game data according to claim 2, characterized in that, The contact recognition device (1) includes a contact rod (4), a contact (5), a position sensor (6), and a control module. The contact (5) is disposed at one end of the contact rod (4), and the other end of the contact rod (4) is connected to the position sensor (6). The position sensor (6) is connected to the control module. The contact (5) is used to generate an action in response to the raised and recessed characters on the mahjong tile. The position sensor (6) is used to generate a signal in response to the action of the contact (5). The control module is used to receive the signal output by the position sensor (6).

4. The identification device based on reading chess and card game data according to claim 3, characterized in that, The contact rod (4) includes a detection part (41), an elastic part (42), and a support part (43); one end of the detection part (41) is in physical contact with the chess piece (2) through a contact (5), and the other end is connected to the support part (43) through the elastic part (42); the rear end of the support part (43) is connected to the position sensor (6); the position sensor (6) is connected to the control module.

5. The identification device based on reading chess and card game data according to claim 4, characterized in that, There are at least two contact rods (4), which are distributed around the center point of the height of the chess piece (2).

6. The identification device based on reading chess and card game data according to claim 3, characterized in that, The contact rod (4) is set at the edge of the chess piece (2) to identify the interval signal of the chess piece (2).

7. The identification device based on reading chess and card game data according to claim 1, characterized in that, The identification device is a coordinate measuring machine, an articulated arm measuring machine, an inductive sensor, a capacitive sensor, a potentiometer sensor, or a linear displacement sensor.

8. The identification device based on reading chess and card game data according to claim 2, characterized in that, The non-contact identification device (7) is a linear variable differential transformer, a laser rangefinder, an ultrasonic detector, a photoelectric sensor, or a machine vision system.

9. The identification device based on reading chess and card game data according to claim 1, characterized in that, The identification device is at least one.

10. The identification device based on reading chess and card game data according to claim 1, characterized in that, It also includes a base, on which the chess and card sensing area (3) and the identification device are disposed; the identification device is disposed on one side of the chess and card sensing area (3).

11. The identification device based on reading chess and card game data according to claim 1, characterized in that, The identification device also includes a positioning module, the output of which is connected to the input of the control module.

12. The identification device based on reading chess and card game data according to claim 8, characterized in that, When the identification device is a laser rangefinder, the identification device also includes a displacement structure, and the laser rangefinder is set at the displacement end of the displacement structure; the displacement structure is a linear displacement structure or a circular displacement structure.

13. The identification device based on reading chess and card game data according to claim 12, characterized in that, It also includes a reflector, which is mounted on the drive structure. The reflector causes the detection light to move in a straight line, in a circle, or to follow the up and down movement of the mahjong tile.

14. A card sorting machine, characterized in that, The card sorting machine includes a recognition device based on reading card game data as described in any one of claims 1 to 13.

15. A card sorting machine according to claim 14, characterized in that, The card sorting machine is a mahjong machine, a domino machine, or a tile sorting machine.

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