WO2024001913A1

WO2024001913A1 - Chess piece detection apparatus, game device, and chess piece detection method

Info

Publication number: WO2024001913A1
Application number: PCT/CN2023/101826
Authority: WO
Inventors: 闫瑾; 杨欢
Original assignee: 首都经济贸易大学; 北京大丞娱乐文化有限公司
Priority date: 2022-06-30
Filing date: 2023-06-21
Publication date: 2024-01-04
Also published as: CN115068925A

Abstract

The present disclosure relates to a chess piece detection apparatus, a game device, and a chess piece detection method. The chess piece detection apparatus comprises a chessboard, chess pieces, and a control unit. The chessboard comprises a plurality of chess piece detection positions. A plurality of light sensing units and at least one light emitting unit are arranged on each of the chess piece detection positions. The plurality of light sensing units are electrically connected to the control unit. The bottoms of the chess pieces are provided with light reflecting surfaces and mask structures. The light emitting unit is used for emitting light to a position above the chessboard. The light sensing units are used for receiving light which is reflected by the light reflecting surfaces of the chess pieces and passes through the mask structures. The control unit determines the types of the chess pieces according to light sensing states of the light sensing units. According to the present disclosure, the types of physical chess pieces can be automatically detected, so that the game experience is good; detection can be completed without touching the chess pieces, so that detection points would not be worn, and the reliability is high; moreover, the structure is simple and the cost is low, thereby facilitating family use and popularization.

Description

A chess piece detection device, game equipment and detection method

This disclosure claims priority to the Chinese patent application filed with the China Patent Office on June 30, 2022, with application number 202210772471.9 and the invention title "A chess piece detection device, game equipment and detection method", the entire content of which is incorporated by reference. in this disclosure.

Technical field

The present disclosure relates to the technical field of chess equipment, and in particular to a chess piece detection device, game equipment and detection method.

Background technique

Different types of chess games have different game rules. However, different chess games have in common that they are composed of a chessboard and chess pieces, and the position of the chess pieces on the chess board needs to be identified. Existing non-electronic game devices such as Go, chess, Chinese chess, and word games, which are composed of pure physical chess pieces and chess boards, do not include chess piece identification functions.

Chess games or spelling software on PC or mobile phones can play Go, chess, or spelling games or competitions between two or more people online or in human-machine battles. They can also automatically time and score, determine victory or defeat, and retain history. Recording and reviewing, human-machine battles, giving tips and suggestions through AI, etc. However, this type of game software does not contain physical chessboards and chess pieces, and lacks the touch of physical chessboards and chess pieces, which will lead to poor game experience. Contact-type chess piece detection implemented through other methods, such as detection resistance or other electrical signal detection methods, will cause the contact points to wear out, resulting in low reliability. Non-contact detection achieved through other methods, such as detection methods based on radio frequency technology or machine vision technology, has problems such as complex antenna and sensor structures and high cost, and cameras installed high above the chessboard will also occupy additional space.

Contents of the invention

(1) Technical problems to be solved

Non-electronic game devices do not include chess piece identification functions, and game software on PC or mobile phones does not contain physical chessboards and chess pieces, and lacks the tactile feel of physical chessboards and chess pieces, which will lead to poor game experience. Contact detection implemented through other methods, such as detection resistance or other electrical signal detection methods, will cause wear and tear on the contact points, resulting in low reliability. Non-contact detection achieved through other methods, such as detection methods based on radio frequency technology or machine vision technology, has problems such as complex structure and high cost, and the camera installed high above the chessboard will also occupy additional space.

(2) Technical solutions

In order to solve the above technical problems, embodiments of the present disclosure provide a chess piece detection device, Game equipment and detection methods.

In a first aspect, the present disclosure provides a chess piece detection device, including:

chess board, chess pieces and control unit;

The chessboard includes a plurality of chess piece detection positions; each chess piece detection position is provided with a plurality of photosensitive units and at least one light-emitting unit; a plurality of the photosensitive units are electrically connected to the control unit;

The bottom of the chess piece is provided with a reflective surface and a mask structure;

The light-emitting unit is used to emit light to the top of the chessboard; the photosensitive unit is used to receive the light reflected by the reflective surface of the chess piece and after passing through the mask structure; the control unit is configured according to the photosensitive unit The photosensitive state determines the type of chess piece.

In some embodiments, the center of the bottom of the chess piece is recessed inward, and the reflective surface is provided at the recess; the mask structure is provided around the recess;

The light-emitting unit is located at the center of the chess piece detection position, and a plurality of the photosensitive units are arranged around the light-emitting unit.

In some embodiments, the photosensitive unit includes a photosensitive element and a current limiting resistor connected in series; a connection node between the photosensitive element and the current limiting resistor is electrically connected to the control unit.

In some embodiments, the method further includes: multiple shift registers; multiple shift registers correspond to multiple chess piece detection bits in one-to-one correspondence;

The data input end of the shift register is electrically connected to the output end of the photosensitive unit corresponding to the chess piece detection bit; a plurality of the shift registers are connected in series and electrically connected to the control unit.

In some embodiments, it also includes: multiple lighting control units;

A plurality of the light-emitting control units correspond to a plurality of the chess piece detection positions in a one-to-one correspondence;

The input end of the light-emitting control unit is electrically connected to the output ends of the plurality of photosensitive units corresponding to the chess piece detection position; the output end of the light-emitting control unit is electrically connected to the control end of the light-emitting unit corresponding to the chess piece detection position. connect;

The light-emitting control unit is used to control the turning on and off of the light-emitting unit.

In some embodiments, the lighting control unit includes a NAND gate.

In some embodiments, the light-emitting unit includes a driving light-emitting chip;

The driving light-emitting chip is electrically connected to the control unit;

The control unit is used to determine whether there is a chess piece in each of the chess piece detection positions according to the photosensitive state of each of the photosensitive units when the driving light-emitting chip is not lit; and to control the chess piece detection positions with chess pieces. After the corresponding driving light-emitting chip is lit, the type of the chess piece on each of the chess piece detection positions is determined according to the photosensitive state of each of the photosensitive units.

In some embodiments, all the driving light-emitting chips are connected in series and then electrically connected to the control unit.

In a second aspect, the present disclosure also provides a game device, including the chess piece detection device according to any one of the first aspects.

In a third aspect, the present disclosure also provides a chess piece detection method, which is suitable for the chess piece detection device as described in any one of the first aspects, including:

Obtain the photosensitive status of each photosensitive unit at the chess piece detection position;

The type of the chess piece at each of the chess piece detection positions is determined according to the photosensitive state of each of the photosensitive units.

(3) Beneficial effects

Compared with the existing technology, the above technical solutions provided by the embodiments of the present disclosure have the following advantages:

The chess piece detection device provided by the present disclosure includes a chess board, chess pieces and a control unit; the chess board includes multiple chess piece detection positions; multiple photosensitive units and at least one light-emitting unit are provided on each chess piece detection position; the multiple photosensitive units are electrically connected to the control unit ; The bottom of the chess piece is provided with a reflective surface and a mask structure; the light-emitting unit is used to emit light to the top of the chessboard; the photosensitive unit is used to receive the light reflected by the reflective surface of the chess piece and after passing through the mask structure; the control unit is based on the photosensitivity of the photosensitive unit The status determines the type of piece. Because when a chess piece is placed at the chess piece detection position, the photosensitive unit at the chess piece detection position will receive the light reflected through the bottom of the chess piece, and the bottom of the chess piece is equipped with a mask structure. When the light irradiates the photosensitive unit through the mask structure, it will It presents different photosensitive states, and the type of chess piece can be determined according to the photosensitive status. The present invention can automatically detect the type of physical chess pieces, has a good game experience, and can complete the detection without touching the chess pieces. The detection points will not cause wear and tear, has high reliability, simple structure and low cost, and is conducive to home use and popularization.

It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only, and do not limit the present disclosure.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those of ordinary skill in the art, It is said that other drawings can be obtained based on these drawings without exerting creative labor.

Figure 1 is a schematic structural diagram of a chess piece detection device provided by an embodiment of the present disclosure;

Figure 2 is a schematic structural diagram of a chess piece detection position provided by an embodiment of the present disclosure;

Figure 3 is a schematic structural diagram of a chess piece provided by an embodiment of the present disclosure;

Figure 4 is a schematic diagram of light between a chess piece and a chessboard provided by an embodiment of the present disclosure;

Figure 5 is a schematic diagram of a mask structure provided by an embodiment of the present disclosure;

Figure 6 is a schematic diagram of a partial mask structure provided by an embodiment of the present disclosure;

Figure 7 is a regular layout diagram of a light-emitting unit provided by an embodiment of the present disclosure;

Figure 8 is an isometric layout diagram of a light-emitting unit provided by an embodiment of the present disclosure;

Figure 9 is an equidistant layout diagram of another light-emitting unit provided by an embodiment of the present disclosure;

Figure 10 is a regular layout diagram of another light-emitting unit provided by an embodiment of the present disclosure;

Figure 11 is a circuit connection diagram of a photosensitive unit provided by an embodiment of the present disclosure;

Figure 12 is another photosensitive unit circuit connection diagram provided by an embodiment of the present disclosure;

Figure 13 is a schematic diagram of the connection between a photosensitive unit and a shift register provided by an embodiment of the present disclosure;

Figure 14 is a schematic diagram of the connection between a photodiode and a shift register provided by an embodiment of the present disclosure;

Figure 15 is a schematic connection diagram of a lighting control unit provided by an embodiment of the present disclosure;

Figure 16 is a schematic connection diagram of another lighting control unit provided by an embodiment of the present disclosure;

Figure 17 is a circuit connection diagram of a chess piece detection position provided by an embodiment of the present disclosure;

Figure 18 is a circuit connection diagram of another chess piece detection position provided by an embodiment of the present disclosure.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than All examples. Based on the embodiments in this disclosure, all other embodiments obtained by those of ordinary skill in the art without any creative efforts fall within the scope of protection of this disclosure.

An embodiment of the present disclosure provides a chess piece detection device. FIG. 1 is a schematic structural diagram of a chess piece detection device provided by an embodiment of the present disclosure. FIG. 2 is a schematic structural diagram of a chess piece detection position provided by an embodiment of the present disclosure. As shown in Figures 1 and 2, the chess piece detection device includes: a chess board 10, chess pieces 20 and a control unit 30. The chessboard 10 includes a plurality of chess piece detection positions 11 . Each chess piece detection position 11 is provided with a plurality of photosensitive units 12 and at least one light-emitting unit 13 . The plurality of photosensitive units 12 are electrically connected to the control unit 30 . The bottom of the chess piece 20 is provided with a reflective surface and a mask structure. The light-emitting unit 13 is used to emit light to the top of the chessboard 10 , the photosensitive unit 12 is used to receive the light reflected by the reflective surface of the chess piece 20 and after passing through the mask structure, the control unit 30 determines the type of the chess piece 20 according to the photosensitive state of the photosensitive unit 12 .

Specifically, a plurality of chess piece detection positions 11 are provided on the chessboard 10. When using the chessboard 10 and chess pieces 20, the chess pieces 20 will be placed at the chess piece detection positions 11, and then the chess piece detection positions 11 will detect whether there are chess pieces and the type of chess pieces. Different games will have different numbers and layouts of chess piece detection positions due to different chess size and layout. Each chess piece detection position 11 is provided with multiple photosensitive units 12 and at least one light-emitting unit 13. The light-emitting unit 13 is used to emit light to the top of the chess board 10. The bottom of the chess piece 20 is provided with a reflective surface and a mask structure, which can The light emitted by the light-emitting unit 13 is reflected back to the chess piece detection position 11, so that the plurality of photosensitive units 12 receive the reflected light. The multiple photosensitive units 12 are located at different positions, and the reflected light needs to pass through the mask structure. Finally, the photosensitive states of the multiple photosensitive units 12 of each chess piece detection position 11 are different, and the multiple photosensitive units 12 are electrically connected to the control unit 30 , the control unit 30 receives the photosensitive states of multiple photosensitive units 12, and determines the type of the chess piece 20 according to the different photosensitive states.

If no chess piece 20 is placed in the chess piece detection position 11, the light-emitting unit 13 emits light to the top of the chessboard 10. The light cannot contact the reflective surface and will not be reflected back to the photosensitive unit 12. Therefore, the multiple photosensitive units 12 will not receive the light. , the control unit 30 can determine that there is no chess piece in the chess piece detection position 11 according to the photosensitive state of the photosensitive unit 12 . If a chess piece 20 is placed at the chess piece detection position 11, since the bottom of the chess piece 20 is provided with a reflective surface and a mask structure, the reflective surface can reflect light, and the mask structure can block part of the light. The light-emitting unit 13 emits light to the top of the chessboard 10, and the light It is reflected to the photosensitive unit 12 through the reflective surface. The mask structures at the bottom of different chess pieces are different, and the positions of the detection positions 11 of the chess pieces when light passes through the mask structures of the chess pieces are different. The chess piece detection position 11 includes a plurality of photosensitive units 12. The light irradiates the chess piece detection position 11 at different positions. Therefore, the positions and numbers of the photosensitive units 12 that receive the light are different and present different photosensitive states. The control unit 30 responds to the different photosensitive states. Determine the type of chess piece 20. It should be noted that the embodiments of the present disclosure do not limit the specific number of light-emitting units and photosensitive units.

In the chess piece detection device provided by the embodiment of the present disclosure, when the chess piece is placed at the chess piece detection position, the photosensitive unit at the chess piece detection position will receive the light reflected through the bottom of the chess piece, and the bottom of the chess piece is provided with a mask structure, and the light passes through the mask When the mold structure is illuminated by the photosensitive unit, it will show different photosensitive states, and the type of chess piece can be determined based on the photosensitive status. The disclosed embodiment can automatically detect the type of physical chess pieces, providing a better game experience, and does not require contact with the chess pieces to complete the detection. The detection points will not be worn, have high reliability, simple structure and low cost, and are conducive to home use and popularization.

Optionally, the chessboard includes a chess piece placement plate and a handheld chess piece tray. Different types of board games use different types of boards. The chess piece placement board is used as the main chess board for playing chess games in chess games, and some chess games need to detect the number of chess pieces held by the player, so the handheld chess piece tray also needs to be set with a chess piece detection position. For example, in a spelling game, each player holds a chess piece tray, which is used to place the chess pieces held by the player. Generally, the number of chess pieces is 7. The hand-held chess piece tray is also equipped with a chess piece detection position to identify the type of chess pieces held by the player.

In some embodiments, FIG. 3 is a schematic structural diagram of a chess piece provided by an embodiment of the present disclosure, and FIG. 4 is a schematic diagram of the light between a chess piece and a chessboard provided by an embodiment of the present disclosure. As shown in Figure 3, the center of the bottom of the chess piece 20 is recessed inward, and the reflective surface 21 is provided at the recess; the mask structure 22 is provided around the recess. As shown in FIG. 4 , the light-emitting unit 13 is located at the center of the chess piece detection position 30 , and a plurality of photosensitive units 12 are arranged around the light-emitting unit 13 .

Specifically, the center of the bottom of the chess piece 20 is recessed inward and is provided with a reflective surface 21 . The reflective surface 21 is used to reflect the light emitted by the light-emitting unit 13 toward the chess piece 20 so that the photosensitive unit 12 receives the reflected light. The bottom of the chess piece 20 also includes a mask structure 22, which is arranged around the depression. Since the function of the mask structure is to block part of the reflected light from reaching the chess piece detection position 11, the mask structure should be made of an opaque material. . The light-emitting unit 13 is located at the center of the chess piece detection position 11. When the light-emitting unit 13 emits light upward, it illuminates the inward depression in the center of the bottom of the chess piece 20, and a reflective surface 21 is provided in the depression to reflect the light. A plurality of photosensitive units 12 are arranged around the light-emitting unit 13. When receiving reflected light, due to different mask structures, the transmitted reflected light irradiates the chess piece detection position 11 at different positions, so the photosensitive unit 12 that receives the light will also have different. The type of chess piece 20 can be determined through different photosensitive states of the photosensitive unit 12 .

It should be noted that the shape of the chess piece can be set according to actual needs, such as rectangle, circle, square, etc., and there is no specific limitation in the embodiment of the present disclosure. The center of the bottom of the chess piece is recessed inward, and a reflective surface is provided. If other structures are selected that can reflect the light emitted by the light-emitting unit, the structure of the bottom of the chess piece can also be changed. The embodiments of the present disclosure are also not specifically limited.

Optionally, the mask structure corresponds to the chess piece type one-to-one.

Specifically, the light-emitting unit emits light to the chess piece, and the light is reflected by the reflective surface provided at the bottom of the chess piece and passes through the mask structure, and is received by the photosensitive unit. The control unit determines the type of chess piece based on the different photosensitive states presented by the photosensitive unit. When the chess pieces are placed on the chessboard, the placement direction of the chess pieces may not be unique, which will cause the mask structure to be placed in different directions. Therefore, for the same chess piece, due to the different directions when placing the chess piece, there will be As a result, the photosensitive states of the photosensitive units are different, so there are situations where multiple photosensitive states correspond to one mask structure, and one mask structure must correspond to one chess piece type.

Exemplarily, FIG. 5 is a schematic diagram of each mask structure of a chess piece provided by an embodiment of the present disclosure. When the chess piece detection position uses 8 photosensitive units, each chess piece corresponds to 68 different mask structures. Different chess piece types correspond to different mask structures, which can realize the identification of different chess piece types. Using the above layout of 8 photosensitive units, all possible chess piece mask structures are shown in Figure 5. The filled black squares in the figure indicate that there is an opaque mask used to block light at that position, and the squares without filled colors indicate There is no mask blocking the light at this position. The figure contains a total of 68 different mask structures, so a layout of 8 photosensitive units can be used to identify up to 68 different types of chess pieces. As an example, Figure 5 only shows a layout of 8 photosensitive units. In fact, other layouts of photosensitive units can also be used, or other numbers of photosensitive units can be used to form chess piece detection positions. If other layout methods and numbers of photosensitive units are used, The corresponding mask structures are also different. This is not limited in the embodiments of the present disclosure and is only given as an example.

When the chess pieces are placed on the chessboard, due to the different placement directions of the chess pieces, the placement directions of the corresponding mask structures may also be different. FIG. 6 is a schematic diagram of a mask structure corresponding to different placement directions according to an embodiment of the present disclosure. As shown in Figure 6, the chess pieces may be placed in multiple directions, and the photosensitive states of the photosensitive units also have multiple situations. Therefore, these situations are all set to correspond to the same chess piece type. If the chess piece is circular in shape, there will be more placement directions, but multiple photosensitive states should be recognized as the same mask structure. Therefore, the chess piece type can be identified based on the one-to-one correspondence between the mask structure and the chess piece type.

Optionally, the light emitting unit includes a visible light emitting unit or an infrared light emitting unit. The light-emitting unit is used to emit light to the top of the chessboard, and is reflected by the chess pieces to the chess piece detection position, so that the photosensitive unit located at the chess piece detection position receives it. Therefore, the light type of the light-emitting unit can be a variety of visible light or infrared light, as long as the photosensitive unit can receive it.

Optionally, a variety of arrangement layouts are included between the photosensitive unit and the light-emitting unit. It includes regular layout and equidistant layout. The regular layout means that the light-emitting unit is located in the center, and the photosensitive units are surrounding the light-emitting unit in turn; the equidistant layout means that the light-emitting unit is located in the center, and the photosensitive units on the periphery are between the light-emitting units in the center. The radial straight line distance between them is the same. The layout methods are different, and the reflected light intensity received by each photosensitive unit is different. You can choose the layout according to actual needs.

Figure 7 is a regular layout diagram of a light-emitting unit provided by an embodiment of the present disclosure. Figure 8 is an equidistant layout diagram of a light-emitting unit provided by an embodiment of the present disclosure. Examples are shown in Figures 7-8, Figures 7 and 8 Both of them provide one light-emitting unit 13, which uses a light-emitting diode, and eight photosensitive units 12, which use photosensitive diodes. In FIG. 7 , the light-emitting units 13 are regularly arranged around the photosensitive unit 12 . In FIG. 8 , the radial distance between each light-emitting unit 13 and the photosensitive unit 12 is the same. Figure 9 is an equidistant layout diagram of another light-emitting unit provided by an embodiment of the present disclosure. Figure 9 provides one light-emitting unit 13, which uses light-emitting diodes, and 12 photosensitive units 12, which uses photosensitive diodes. The radial distance between each light-emitting unit 13 and the photosensitive unit 12 in FIG. 9 is the same. Figure 10 is a regular layout diagram of another light-emitting unit provided by an embodiment of the present disclosure. Figure 10 provides a light-emitting unit 13 and 16 photosensitive units 12. 4 photosensitive units 12 are located around the light-emitting unit 13, and the remaining 12 photosensitive units 12 is far away from the light-emitting unit 13, but the radial distance between the four closer photosensitive units 12 and the light-emitting unit 13 is the same, and the radial distance between the 12 farther photosensitive units 12 and the light-emitting unit 13 is the same. Therefore, the relationship between the light-emitting unit 13 and the photosensitive unit 12 There are many ways to arrange layouts.

In some embodiments, FIG. 11 is a circuit connection diagram of a photosensitive unit provided by an embodiment of the present disclosure. As shown in FIG. 11 , the photosensitive unit 12 includes a photosensitive element 121 and a current limiting resistor 122 connected in series. The connection node of the photosensitive element 121 and the current limiting resistor 122 is electrically connected to the control unit 30 .

Specifically, the photosensitive unit 12 includes a photosensitive element 121 and a current limiting resistor 122 connected in series. At the same time, the photosensitive element 121 is powered by an external power supply. The photosensitive element 121 can generate a current after receiving the reflected light. The current passes through the current limiting resistor 122 and is A pressure drop occurs. The connection node of the photosensitive element 121 and the current limiting resistor 122 is electrically connected to the control unit 30. The connection node outputs a signal to the control unit 30 and sends the photosensitive state of the photosensitive unit 12 to the control unit 30. The control unit 30 determines the chess piece type.

Optionally, the current limiting resistor 122 may be set as a pull-down resistor 123 or a pull-up resistor 124. Figure 12 is another photosensitive unit circuit connection diagram provided by an embodiment of the present disclosure. As shown in Figure 12, the current limiting resistor 122 is a pull-down resistor 123. When the light intensity received by the photosensitive element 121 exceeds the set threshold, the photosensitive element 121 The signal output by the connection node between the photosensitive element 121 and the pull-down resistor 123 is high level, or when the light intensity received by the photosensitive element 121 is lower than the set threshold, the signal output by the connection node between the photosensitive element 121 and the pull-down resistor 123 is low level. The current limiting resistor 122 is a pull-up resistor 124. When the light intensity received by the photosensitive element 121 exceeds the set threshold, the signal output by the connection node between the photosensitive element 121 and the pull-up resistor 124 is low level, or when the photosensitive element 121 receives When the light intensity is lower than the set threshold, the signal output by the connection node between the photosensitive element 121 and the pull-up resistor 124 is high level. The signals output by the connection nodes are transmitted to the control unit, and the control unit determines the chess piece type. The current limiting resistor 122 may be a pull-down resistor 123 or a pull-up resistor 124, which is not limited in the embodiment of the present disclosure.

It should be noted that the photosensitive unit can also adopt a circuit structure composed of other electronic components, such as a structure with an amplifier. The above embodiments are only examples, and the embodiments of the present disclosure do not limit the circuit structure of the photosensitive unit.

In some embodiments, FIG. 13 is a schematic diagram of the connection between a photosensitive unit and a shift register according to an embodiment of the present disclosure. As shown in FIG. 13 , the chess piece detection bits also include: multiple shift registers 14 , and the multiple shift registers 14 correspond to the multiple chess piece detection bits 11 in one-to-one correspondence. The data input end of the shift register 14 is electrically connected to the output end of the photosensitive unit 12 corresponding to the chess piece detection bit 11. Multiple shift registers 14 are connected in series and then electrically connected to the control unit 30.

Specifically, the chess piece detection device also includes multiple shift registers 14. The multiple shift registers 14 correspond to the multiple chess piece detection bits 11 one-to-one. Each shift register 14 is used to transmit its corresponding chess piece detection bit 11. Photosensitive state. The data input terminals of the shift register 14 are electrically connected to the output terminals of the plurality of photosensitive units 12 on the corresponding chess piece detection positions 11 to receive signals transmitted by the photosensitive units 12 . Since there are multiple chess piece detection bits 11, there are correspondingly multiple shift registers 14. After being connected in series, the multiple shift registers 14 are electrically connected to the control unit 30. Through the shift register 14, the control unit 30 can directly obtain the photosensitive state corresponding to each chess piece detection bit 11, and integrate and transmit the photosensitive status of each individual photosensitive unit 12, so that the control unit 30 can determine the chess piece type.

An example is shown in Figure 14. Figure 14 is a schematic diagram of the connection between a photosensitive unit and a shift register provided by an embodiment of the present disclosure. The photosensitive unit selects a photosensitive diode, and the light-emitting unit selects a light-emitting diode. Each chess piece detection position is provided with a light-emitting diode and 8 photodiode. Every A light-emitting diode is connected to the power supply through a current-limiting resistor. In this case, the light-emitting diode is always on. The eight photodiodes in Figure 14 are connected in series with pull-down resistors. Each chess piece detection position uses an 8-bit parallel and serial output shift register. For a chessboard with n chess piece detection positions, n shift registers will be set, and the n shift registers are connected to the control unit. Among them, n shift registers can be connected to each other in a serial manner, that is, the serial output of the previous shift register is used as the serial input of the current shift register, and the serial output of the current shift register is used as the next shift register. Serial input to bit register. The connection nodes of the eight photodiodes and the pull-down resistors are electrically connected to the eight parallel input terminals of the shift register respectively, that is, the output of the photodiodes is used as the input of the shift register.

It should be noted that the number of input interfaces of the register is determined by the number of photosensitive units set in each chess piece detection bit.

In some embodiments, FIG. 15 is a schematic connection diagram of a lighting control unit provided by an embodiment of the present disclosure. As shown in FIG. 15 , the chess piece detection position further includes: a plurality of light-emitting control units 15 , and the plurality of light-emission control units 15 correspond to the plurality of chess piece detection positions 11 in one-to-one correspondence. The input end of the light-emitting control unit 15 is electrically connected to the output ends of the plurality of photosensitive units 12 of the corresponding chess piece detection position 11 , and the output end of the light-emitting control unit 15 is electrically connected to the control end of the light-emitting unit 13 of the corresponding chess piece detection position 11 . The lighting control unit 15 is used to control the turning on and off of the lighting unit 13 .

Specifically, the chess piece detection device also includes a plurality of light-emitting control units 15, and the plurality of light-emitting control units correspond to the plurality of chess piece detection positions 11 in one-to-one correspondence. Each light-emitting control unit 15 is used to control the light-emitting unit 13 on its corresponding chess piece detection position 11 . Among them, the input end of the light-emitting control unit 15 is electrically connected to the output ends of the plurality of photosensitive units 12 of the corresponding chess piece detection position 11. The light-emitting control unit 15 obtains the photosensitive state of the photosensitive unit 12, determines whether there are chess pieces in the chess piece detection position, and thereby controls Whether the lighting unit 13 needs to be turned on. Since the output end of the light emitting control unit 15 is electrically connected to the control end of the light emitting unit 13 of the corresponding chess piece detection position 11, after the light emitting control unit 15 determines whether there is a chess piece in the chess piece detection position, if there is a chess piece, the light emitting control unit 15 controls the light emission. The unit 13 emits light to determine the type of chess piece; if there is no chess piece, the light-emitting control unit 15 controls the light-emitting unit not to emit light to control the light-emitting unit on and off, which can detect the type of chess piece and save power.

It should be noted that the light-emitting control unit can adopt a variety of circuit structures. The specific circuits in the light-emitting control unit are not limited. For example, various logic circuits can be used. The embodiments of the present disclosure do not limit the circuit structure of the photosensitive unit.

In some embodiments, FIG. 16 is a schematic connection diagram of yet another lighting control unit provided by an embodiment of the present disclosure. As shown in FIG. 16 , the lighting control unit includes a NAND gate 151 .

Specifically, the lighting control unit includes a NAND gate 151 , which is used to control the lighting unit 13 . The input terminal of the NAND gate 151 is electrically connected to the connection node between the photosensitive element 121 and the current limiting resistor 122 in the photosensitive unit, and the output terminal of the NAND gate 151 is electrically connected to the input terminal of the light-emitting unit 13 . The NAND gate 151 receives the signal output by the photosensitive unit, thereby outputting different control instructions to the light-emitting unit 13 to complete the control of the light-emitting unit.

For example, Figure 16 provides 8 photosensitive diodes, and the output terminals of the 8 photosensitive diodes are connected to 8 input positions of a logic gate. For example, the logic gate is an 8-input NAND gate. It can also be designed as other more advanced gates. for complex logic circuits. Table 1 shows the output of the corresponding NAND gate in different states. Table 1 shows the logical structure of the circuit. When no chess piece is placed When a certain chess piece on the chessboard detects a position, ideally, there is an external light source, which may be sunlight or indoor lighting, and the light intensity is greater than the preset threshold. Because the eight photodiodes at the chess piece detection position are illuminated by external light sources, their outputs are all high level. At this time, the output of the eight-input NAND gate is low level. When there are chess pieces placed on the chessboard and the light-emitting diodes are not lit, because the chess pieces block the external light source, all 8 photodiodes have low-level outputs. At this time, the output of the 8-input NAND gate is high level. This low level can control the light-emitting diode to light up. After the light-emitting diode is lit, due to the presence of the chess piece and according to the set mask structure, at least one photosensitive diode will be blocked, causing the photosensitive diode to be unable to receive reflected light, that is, the output of at least one photosensitive diode is low level, that is, the output of the 8-input NAND gate is still at a high level at this time, and the light-emitting diode can still remain lit. When the chess piece is removed, for example, after the piece is captured in chess, the output of the 8 photodiodes is high due to being illuminated by the external light source. At this time, the output of the 8-input NAND gate returns to low level, and the light-emitting diodes go out.

Therefore, when there is no chess piece in the chess piece detection position, the output of the NAND gate is low level, and when there is a chess piece in the chess piece detection position, the output of the NAND gate is high level. By connecting the output end of the NAND gate to the resistor connected in series with the light-emitting diode, you can control the light-emitting diode to turn on and off. When there is no chess piece in the chess piece detection position, the light-emitting diode goes out. When there is a chess piece in the chess piece detection position, the light-emitting diode lights up to avoid the situation where the light-emitting diode is always on.

It should be noted that the light-emitting control unit can also adopt a circuit structure composed of other logic circuits, such as other circuit structures using AND gates, NOT gates and other combinations of various logic circuits. The above embodiments are only examples. The embodiments of the present disclosure There is no restriction on the circuit structure of the lighting control unit.

Table 1 The output of the corresponding NAND gate in different states

In some embodiments, FIG. 17 is a circuit connection diagram of a chess piece detection position provided by an embodiment of the present disclosure. As shown in FIG. 17 , the light-emitting unit includes a driving light-emitting chip 131 , and the driving light-emitting chip 131 is electrically connected to the control unit 30 . The control unit 30 is used to drive the light emitting chip When 131 is not lit, it is determined according to the photosensitive state of each photosensitive unit 12 whether there is a chess piece in each chess piece detection position 11, and the drive light-emitting chip 131 corresponding to the chess piece detection position 11 with the chess piece 20 is controlled to light up, according to each The photosensitive state of the photosensitive unit 12 determines the type of chess piece on each chess piece detection position 11 .

Specifically, the light-emitting unit includes a driving light-emitting chip 131. The driving light-emitting chip 131 can be directly controlled by the control unit 30. Therefore, the driving light-emitting chip 131 is electrically connected to the control unit 30 and controls the driving light-emitting chip 131 to turn on and off. The control unit 30 is electrically connected to each photosensitive unit 12 and acquires the photosensitive status of each photosensitive unit 12. When the driving light-emitting chip 121 is not lit, the control unit 30 determines whether the corresponding chess piece detection bit is present based on the acquired photosensitive status. piece. If there are no chess pieces, the driving light-emitting chip 131 will not be lit; if there are chess pieces, the driving light-emitting chip 131 will be lit. At this time, the photosensitive state of the photosensitive unit 12 will change and continue to be transmitted to the control unit 30. The control unit 30 will change the light-sensing state according to real-time. The photosensitive state determines the chess piece type. For example, the WS2812 is selected as the driving light-emitting chip. The WS2812 can be directly electrically connected to the control unit, and the control unit chooses whether to light the driving light-emitting chip according to the actual situation. Using WS2812 as the driving light-emitting chip here is only a possible implementation and does not limit the disclosure. In other embodiments, other models or types of driving light-emitting chips can also be used, or other circuits can be used to form the light-emitting unit. This is not limited by the embodiments of the present disclosure, and the above-mentioned embodiments are only examples.

In some embodiments, all driving light-emitting chips are connected in series and then electrically connected to the control unit.

All driving light-emitting chips need to be electrically connected to the control unit. Therefore, the driving light-emitting chips can be connected in series and then electrically connected to the control unit. After receiving the photosensitive status of all photosensitive units, the control unit controls the driving light-emitting chips through serial connection. , can reduce the number of interfaces of the control unit and improve the control capability.

Optionally, the driving light-emitting chip includes multiple light-emitting diodes of different colors. The driving light-emitting chip is electrically connected to the control unit. The control unit can control the multiple light-emitting diodes of different colors and can control their luminous intensity. Under the control of the control unit, multiple light-emitting diodes of different colors driving the light-emitting chip can achieve multiple levels of brightness and can be dimmed to achieve full-color display.

Exemplarily, FIG. 18 is a circuit connection diagram of yet another chess piece detection bit provided by an embodiment of the present disclosure. As shown in Figure 18, the driving light-emitting chip 131 can select the WS2812 chip, and set up multiple shift registers 14 and multiple photosensitive units 12. The multiple driving light-emitting chips 131 are connected in series in sequence and are electrically connected to the control unit 30. The plurality of shift registers 14 are also connected in series and are electrically connected to the control unit 30 . After receiving the output signal of the photosensitive unit 12, the control unit 30 determines whether to light the driving light-emitting chip 131.

The actual number of arrays depends on the specific game. For example, a Scrabble game might be 15×15, a Chinese chess game might be 9×10, and each handheld tile tray for a Scrabble game might be 1×7. In Figure 18, 16 WS2812s are driven serially, and the status of 128 photosensitive units 12 is read serially. First, the control unit 30 reads the status of all photosensitive units 12, and then controls the WS2812 array through the control unit 30. Finally, the control unit reads the status of the photosensitive units 12 again to determine the chess piece type. The specific principles are as follows:

Table 2 All WS2812 are not lit, the control unit reads the status of the photosensitive unit for the first time

Initially, all 16 WS2812s in Figure 18 do not emit light. The control unit first reads the status of the 128 photosensitive units 12 in a serial manner, as shown in Table 2. Table 2 shows that all WS2812s are not lit, and the control unit first reads the status of the 128 photosensitive units 12 in a serial manner. Read the status of the photosensitive unit. If the status of the eight photosensitive units 12 on a certain chess piece detection position is all high level, that is, there is no chess piece placed at this position, and the output of the photosensitive units 12 is all high level due to external ambient light, it indicates that this position There are no chess pieces. On the contrary, it means there is a chess piece here. The control unit will record the status of each chess piece detection position after reading the status of the photosensitive unit 12 for the first time. Subsequently, the control unit drives the WS2812 array in a serial manner, causing the WS2812 with the chess piece position to light up. Finally, Table 3 shows that after the control unit reads the status of the photosensitive unit, the WS2812 controlling the position of the chess piece is lit, and the status of the photosensitive unit is read again. As shown in Table 3, the control unit 30 then reads 128 in a serial manner. The photosensitive state of the photosensitive unit 12 obtained at this time is the mask structure corresponding to the chess piece at each position. According to the corresponding relationship between the mask structure and the chess piece type, the chess piece types at all positions on the chessboard can be determined.

Table 3: After the control unit reads the status of the photosensitive unit, it controls the WS2812 with the chess piece position to light up and reads the status of the photosensitive unit again.

The embodiment provides 68 different chess pieces, but the actual game may not include all 68 different chess pieces. Therefore, if the control unit reads the status of the 128 photosensitive units in a serial manner for the first time, all WS2812s will not emit light, and a non-existent chess piece type will be read, such as a mask structure other than the 14 types of Chinese chess pieces. , it means that there is no chess piece here, but not all of the 8 photosensitive units are high level due to insufficient external light or interference from external light sources. See the row with interference in Table 2. At this time, driving WS2812 When in array, the corresponding WS2812 will not be lit.

Or, there is no chess piece placed in a certain position. When the control unit reads the status of the 128 photosensitive units in a serial manner for the first time, a certain chess piece is read at the chess piece detection position. Due to insufficient external light or interference from external light sources, etc. , at this time the control unit can determine that there is no chess piece in this position. Because if there are chess pieces, the WS2812 will not emit light when reading for the first time, and the external light source is completely blocked by the chess pieces. All the 8 photosensitive units should read low level. If there are no chess pieces, assuming the external light source is sufficient, the 8 photosensitive units should read out All are high levels, the only possibility is that there are no chess pieces, but the external lighting is insufficient or there is interference from external light sources. Therefore, after the control unit determines which positions have chess pieces and which positions do not have chess pieces, the control unit can control the WS2812 corresponding to the positions with chess pieces to light up, thereby reading the type of chess pieces.

It should be noted that the connection method of the relevant circuit is not unique. In Figure 18, the WS2812 array is connected serially, and the shift register is also connected serially. In Figure 10, an S-shaped connection method is used, which can also be used in actual systems. Other connection methods, such as clockwise or counterclockwise spirals, or other connection methods.

An embodiment of the present disclosure also provides a game device, including the chess piece detection device as described in any of the above embodiments. It can be a two-person or multi-player electronic game device including a chess piece detection device, including but not limited to Chinese chess, international chess, spelling games, etc.

It should be noted that the aforementioned explanations of the embodiments applied to the chess piece detection device are also applicable to the game equipment of this embodiment. have the same or corresponding beneficial effects, and will not be repeated here to avoid repetition. Optionally, due to different types of game equipment, the types of chess pieces detected by the chess piece detection device are also different. The types of chess pieces detected by the chess piece detection device include the letters represented by the chess pieces, the meanings represented by the chess pieces, the scores represented by the chess pieces, etc. The number of chess pieces can also be detected.

For example, when the chess piece detection device is used to detect Chinese chess, the chess piece is initially placed at a fixed position on the chess board, and then both parties holding the chess piece alternately move the chess piece to a blank position or a non-blank position, that is, to capture the opponent's chess piece, and finally capture the chess piece. Losing the opponent's general/cosmic is the winning condition, and there may also be a draw. At this time, the chess piece detection device is used to detect the status of the chess pieces, such as how to move or be captured. When the chess piece detection device is used to detect a spelling game, the chess board is initially empty and chess pieces need to be added to the chess board. The chess pieces represent different letters, and the chess pieces with different letters have different scores. At this time, the chess piece detection device is used to detect the placement of the chess pieces. The position, the letter represented by the piece, and the score represented by the piece.

In addition to the chess piece detection device, the game equipment provided by the embodiments of the present disclosure can generally also implement functions such as timing, scoring, and victory or defeat determination. The game device provided by the embodiment of the present disclosure can also be equipped with a communication module to enable the chessboard and the chess piece tray to communicate with each other, and to use Bluetooth or WiFi technology to enable the chessboard to communicate with other electronic devices, such as mobile phones, computers, servers located in the cloud, etc. Connect to achieve functions such as saving history and reviewing disks.

An embodiment of the present disclosure also provides a chess piece detection method, which is suitable for the chess piece detection device described in any of the above embodiments, including:

S100. Obtain the photosensitive state of each photosensitive unit at the chess piece detection position.

The chess piece detection position includes multiple photosensitive units. The photosensitive unit receives the light reflected from the chess piece to the chess piece detection position. There is a mask structure at the bottom of the chess piece. After the chess piece receives the light, the light is reflected to each photosensitive unit on the chess piece detection position. When reflected, Need to go through the mask structure, mask The structure blocks part of the light, so the photosensitive state of each photosensitive unit can be obtained.

S200. Determine the type of chess piece at each chess piece detection position based on the photosensitive state of each photosensitive unit.

Since the mask structures set for different chess piece types are different, the chess piece type corresponds to the mask structure one-to-one. After obtaining the photosensitive state of each photosensitive unit, the mask structure of the chess piece corresponding to the photosensitive state can be determined. According to the mask structure, the Determine the corresponding chess piece type. Whether there is a chess piece in the chess piece detection position, the corresponding photosensitive state will be different. Therefore, it can be determined whether there is a chess piece in the chess piece detection position, and the specific type of chess piece present.

It should be noted that the above explanations applied to the embodiment of the chess piece detection device are also applicable to the chess piece detection method of this embodiment. have the same or corresponding beneficial effects, and will not be repeated here to avoid repetition.

It should be noted that in this article, relational terms such as “first” and “second” are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these There is no such actual relationship or sequence between entities or operations. Furthermore, the terms "comprises," "comprises," or any other variations thereof are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also those not expressly listed other elements, or elements inherent to the process, method, article or equipment. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article, or apparatus that includes the stated element.

The above descriptions are only specific embodiments of the present disclosure, enabling those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be practiced in other embodiments without departing from the spirit or scope of the disclosure. Therefore, the present disclosure is not to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Industrial applicability

In the chess piece detection device provided by the present disclosure, when a chess piece is placed at the chess piece detection position, the photosensitive unit at the chess piece detection position will receive the light reflected through the bottom of the chess pieces, and the bottoms of the chess pieces are equipped with a mask structure, and the light passes through the mask structure When the photosensitive unit is illuminated, different photosensitive states will appear, and the type of chess piece can be determined based on the photosensitive state. The present invention can automatically detect the type of physical chess pieces, has a better game experience, and does not need to touch the chess pieces to complete the detection. The detection points will not be worn, have high reliability, simple structure and low cost, are conducive to home use and popularization, and have great advantages. Strong industrial applicability.

Claims

A chess piece detection device, characterized by including:

chess board, chess pieces and control unit;

The chessboard includes a plurality of chess piece detection positions; each chess piece detection position is provided with a plurality of photosensitive units and at least one light-emitting unit; a plurality of the photosensitive units are electrically connected to the control unit;

The bottom of the chess piece is provided with a reflective surface and a mask structure;

The light-emitting unit is used to emit light to the top of the chessboard; the photosensitive unit is used to receive the light reflected by the reflective surface of the chess piece and after passing through the mask structure; the control unit is configured according to the photosensitive unit The photosensitive state determines the type of chess piece.
The chess piece detection device according to claim 1, wherein the center of the bottom of the chess piece is recessed inward, and the reflective surface is provided at the recess; the mask structure is provided around the recess;

The light-emitting unit is located at the center of the chess piece detection position, and a plurality of the photosensitive units are arranged around the light-emitting unit.
The chess piece detection device according to claim 1, wherein the photosensitive unit includes a photosensitive element and a current limiting resistor connected in series; the connection node of the photosensitive element and the current limiting resistor is electrically connected to the control unit. .
The chess piece detection device according to claim 1, further comprising: a plurality of shift registers; a plurality of the shift registers correspond to a plurality of the chess piece detection bits in one-to-one correspondence;

The data input end of the shift register is electrically connected to the output end of the photosensitive unit corresponding to the chess piece detection bit; a plurality of the shift registers are connected in series and electrically connected to the control unit.
The chess piece detection device according to claim 1, further comprising: a plurality of lighting control units;

A plurality of the light-emitting control units correspond to a plurality of the chess piece detection positions in a one-to-one correspondence;

The input end of the light-emitting control unit is electrically connected to the output ends of the plurality of photosensitive units corresponding to the chess piece detection position; the output end of the light-emitting control unit is electrically connected to the control end of the light-emitting unit corresponding to the chess piece detection position. connect;

The light-emitting control unit is used to control the turning on and off of the light-emitting unit.
The chess piece detection device according to claim 5, characterized in that the light emitting control unit includes a NAND gate.
The chess piece detection device according to claim 1, wherein the light-emitting unit includes a driving light-emitting chip;

The driving light-emitting chip is electrically connected to the control unit;

The control unit is used to determine whether there is a chess piece in each of the chess piece detection positions according to the photosensitive state of each of the photosensitive units when the driving light-emitting chip is not lit; and to control the chess piece detection positions with chess pieces. After the corresponding driving light-emitting chip is lit, the type of the chess piece on each of the chess piece detection positions is determined according to the photosensitive state of each of the photosensitive units.
The chess piece detection device according to claim 7, characterized in that all of the The driving light-emitting chip is connected in series and electrically connected to the control unit.
A game equipment, characterized by including the chess piece detection device according to any one of claims 1-8.
A chess piece detection method, characterized in that it is suitable for the chess piece detection device according to any one of claims 1-8, including:

Obtain the photosensitive status of each photosensitive unit at the chess piece detection position;

The type of the chess piece at each of the chess piece detection positions is determined according to the photosensitive state of each of the photosensitive units.