Intelligent chess set with visual guidance function

Abstract

The utility model relates to an intelligent chess set with a visual guidance function. The intelligent chess set comprises a chessboard, a capacitance digital conversion circuit, a processing module and at least two chess pieces, each chess grid on the top face of the chessboard is provided with a recognition device used for recognizing the identity of a chess piece above the chess grid, at least two position detection electrodes are arranged on the periphery of the center of the chess grid, the position detection electrodes in the chess grids form a capacitance sensor, and the position detection electrodes on the chessboard are mutually insulated. The capacitance digital conversion circuit is respectively coupled with each position detection electrode; each chess grid is correspondingly provided with at least one light-emitting device used for indicating the chess grid, and the light-emitting devices on the chessboard form a light display device used for guiding the chess playing position in advance. The processing module is respectively coupled with the capacitance digital conversion circuit and each identification device, and independently drives each light-emitting device.

Description

Technical Field

[0001] The utility model relates to the technology of chess teaching, in particular to an intelligent chess set with a visual guidance function for normal people to use. Background Art

[0002] Board games such as chess, Chinese chess, Go, etc. are considered beneficial activities for teenagers and the elderly, and can play a role in enhancing intelligence.

[0003] With the development of digitalization, computer software for chess enlightenment teaching appears on devices such as computers, tablets or mobile phones. For example, CN117727222A discloses a Go enlightenment teaching and guiding method and device, which prompts the other party about the pieces that may be in crisis when one party makes a move, so as to help beginners familiarize themselves with the rules of chess. Despite the continuous improvement of digitalization, most people still like physical chess sets at present and more and more people still do. Physical intelligent chess sets have good market prospects.

[0004] Physical intelligent chess sets with enlightenment teaching capabilities are required to have the ability to correct mistakes, the function of prompting the next available positions, and even the function of prompting the risk of being captured in the next step. The design of confrontation functions such as correcting mistakes in playing chess, prompting the walking positions, and predicting capturing pieces and even more functions can be easily realized with the current rich digital open-source chess codes; for piece recognition and position detection, traditional intelligent chess sets use RFID technology, which is achieved by embedding tag chips in each piece and setting radio frequency identification in each chess grid, and requires the cooperation of wireless charging technology, with a high cost. At the same time, it is necessary to pick up the piece to trigger the light or voice to prompt the next available position, the operation is not convenient enough, and the function of prompting which pieces can come over when pointing to a certain position with a finger cannot be realized.

[0005] CN116212360A discloses an intelligent physical chess set, which judges and prompts whether the movement of the pieces conforms to the rules of playing chess by collecting images on the chessboard and combining models, playing a role in teaching and prompting for the chess game confrontation. The disadvantage is that a camera device needs to be set above the chessboard, and the volume of the chess set is large.

[0006] CN101332357A discloses an electronic Go board, which achieves recognition through magnets cooperating with magnetic switches and uses indicator lights for prompting. It also has the defect that it can only trigger a response when picking up the pieces, and the operation is not convenient enough. Summary of the Utility Model

[0007] The utility model is to realize the recognition of finger positions based on capacitance technology, and achieve low cost, high precision and small volume, providing convenience for the operation of beginners.

[0008] To this end, an intelligent chess set with a visual guidance function is provided, including a chessboard, a capacitance digital conversion circuit, a processing module, and at least two chess pieces; on each chess square on the top surface of the chessboard, there is an identification device for identifying the identity of the chess piece above the chess square, and at least two position detection electrodes are arranged around its center. Each position detection electrode in the chess square forms a capacitance sensor, and the position detection electrodes on the chessboard are insulated from each other. The capacitance digital conversion circuit is respectively coupled to each position detection electrode; at least one light-emitting device for indicating the chess square is correspondingly arranged for each chess square, and the light-emitting devices on the chessboard form a light display device for pre-guiding the chess-playing position; the processing module is respectively coupled to the capacitance digital conversion circuit and each identification device, and independently drives each light-emitting device.

[0009] The advantages of the technical solution of the present utility model are as follows:

[0010] (1) The electrodes are easy to arrange, the sensing structure is simple to implement, with low cost and small size;

[0011] (2) By arranging at least two electrodes around the center of each chess square, referring to the method of the ratio of the nearest adjacent electrode to the farthest electrode shown in CN111585560B, non-contact high-spatial-resolution recognition of the finger position is achieved, and the response can be triggered without picking up the chess piece, with convenient operation and high teaching efficiency.

[0012] In the intelligent chess set of the present utility model, when the finger approaches or touches the chess piece, the light display device on the chess square, such as an LED, indicates the available positions for the next move of the chess piece, and / or when the finger approaches or touches an empty chess square, the light display device prompts which chess pieces on which chess squares can move to the current finger position. In the structure of the present utility model, at least two position detection electrodes arranged around the center of each chess square can perform position recognition by constructing mutual capacitance and / or self-capacitance.

[0013] As an improved solution, at least two light-emitting devices emitting different colors of light are correspondingly arranged for each chess square, such as a green LED and a red LED. The green LED is used to indicate the available positions, and the red LED is used to indicate potential threats, such as which chess pieces can come over to capture after sunset. Further, light-emitting devices are respectively arranged at the corners of each chess square. For example, for a square chess square, an LED is arranged at each of the four corners of the chess square, and the four LEDs indicate the chess square enclosed by them. The LEDs on the boundary between two adjacent chess squares can be shared.

[0014] As an improved solution, strip electrodes for coupling the capacitance digital conversion circuit are respectively arranged on both sides of the chessboard close to the chess player. When a person's arm crosses the strip electrodes above the chessboard, a capacitance change is caused. The direction of the human hand can be distinguished through the strip electrodes, and then it can be judged which side the finger belongs to, and the corresponding chess piece is selected to prompt the available positions for the next move.

[0015] As another improvement solution, to achieve structural simplification and cost reduction, a first position detection electrode and a second position detection electrode are arranged in each chess grid, and the first position detection electrode and the second position detection electrode are respectively arranged on both sides of the center of the chess grid. Further, the first position detection electrode and the second position detection electrode are symmetrically arranged along the center of the chess grid, which can further improve the position detection accuracy. And / or, more preferably, the arrangement directions of the position detection electrodes of two adjacent chess grids are set differently. Through the difference in the direction of the electric field lines, it is possible to better distinguish the extreme case where the finger is exactly above the boundary line of the chess grid, achieving algorithm simplification while achieving higher position recognition accuracy.

[0016] As another improvement solution, a first position detection electrode, a second position detection electrode, and a third position detection electrode are arranged in each chess grid, and the first position detection electrode, the second position detection electrode, and the third position detection electrode are arranged in a circumferential manner around the center of the chess grid. Compared with the two-electrode solution, the disadvantage of the three-electrode design is that it requires more CDC channels, and the advantage is that the recognition accuracy can be further improved.

[0017] As another improvement solution, a first position detection electrode, a second position detection electrode, a third position detection electrode, and a fourth position detection electrode are arranged in each chess grid, and the first position detection electrode, the second position detection electrode, the third position detection electrode, and the fourth position detection electrode are respectively arranged around the center of the chess grid to further improve the position accuracy. Most preferably, the position detection electrodes on each chess grid are symmetrically arranged along the center, constructing a perpendicular setting of the electric field line direction within the chess grid to achieve the optimal recognition effect; and / or, the position detection electrodes on the left and right sides of the boundary line of the chess grid are symmetrically arranged along the boundary line, using the capacitance difference between the electrodes of two adjacent chess grids to further improve the spatial resolution ability.

[0018] In the present utility model, the identification device can adopt solutions such as RFID and electrical conduction to achieve piece identification. However, as another improved solution, it is preferably based on capacitance technology to achieve piece identification, with the advantages of no need for contact and allowing the pieces to be placed in any direction. Specifically, the identification device includes zero, one or more graphic identifiers arranged at the bottom of each piece, and at least two detection electrodes arranged in each chess grid; the dielectric constant difference between the graphic identifier and the piece body is greater than 4 - 50 times, and the graphic identifiers on the piece are arranged outward from the center of the chess grid to form a coding pattern, and the coding patterns of different types of pieces are different; the detection electrodes in the chess grid are arranged outward from the center of the chess grid and constitute a capacitive sensor for non-contact induction of the coding pattern. At least one of the graphic identifier and the detection electrode is set as a ring, and each chess grid is correspondingly provided with an alignment structure, which is used to guide the identifier at the bottom of the piece into the induction electric field of the capacitive sensor when the piece lands on the chess grid; the capacitance digital conversion circuit is respectively coupled to each detection electrode. In this improved solution, the bottom of the piece is sprayed with carbon powder or fixed with a metal conductor as the graphic identifier, resulting in a large difference in dielectric constant from the piece material (commonly wood or stone due to historical and cultural reasons). The electrodes are easy to arrange, facilitating the setting of the chess grid. Combined with the capacitance digital conversion circuit (CDC), high-precision capacitance detection can be achieved at low implementation cost; by setting the structure of the graphic identifier and the detection electrode arranged outward from the center of the chess grid, and at least one of them having a ring design, the piece can be placed at any angle of 360° or even rotated, which is easy to operate.

[0019] Furthermore, the detection electrode is set as a ring electrode, and the ring electrodes in the chess grid are mutually insulated and concentrically arranged; an inter-capacitance electric field is constructed between two adjacent ring electrodes. When the piece lands on the chess grid, under the guiding action of the alignment structure, each identifier at the bottom of the piece respectively falls into different inter-capacitance electric fields. In other words, when the piece lands on the chess grid, the graphic identifier falls into the gap between two adjacent detection electrodes, and detection is achieved through the inter-capacitance method. The inter-capacitance method is relatively insensitive to environmental factors such as temperature and humidity compared to the self-capacitance method, which is beneficial to improving the detection accuracy; alternatively, a self-capacitance electric field is constructed with each ring electrode. When the piece lands on the chess grid, under the guiding action of the alignment structure, each identifier at the bottom of the piece respectively falls into different self-capacitance electric fields. In other words, when the piece lands on the chess grid, each graphic identifier is aligned with a detection electrode, and detection is achieved through the self-capacitance method. The advantage of the self-capacitance method is that the detection distance is far, but because it is a ground capacitance, it requires human hand cooperation. Utilizing the characteristic that there is human hand contact when picking up or putting down the piece, the detection purpose can also be achieved. On this basis, further, the graphic identifier is a ring identifier, and the ring identifiers on the piece are spaced apart and concentrically arranged, which can improve the capacitance output and further enhance the detection accuracy.

[0020] As another improvement, it further includes a timer coupled to the processing module to implement timer broadcast reminders, and / or it further includes a voice broadcast device coupled to the processing module for voice prompts. Description of the Drawings

[0021] Figure 1 is a schematic diagram of the usage state of the intelligent chess set with visual guidance function provided in this embodiment;

[0022] Figure 2 is another schematic diagram of the usage state of the intelligent chess set with visual guidance function provided in this embodiment;

[0023] Figure 3 is a schematic diagram of the LED settings at each corner of the intelligent appliance provided in this embodiment;

[0024] Figure 4 is a schematic diagram of the distribution of two position detection electrodes in the chess grid;

[0025] Figure 5 is a schematic diagram of the structure where two position detection electrodes in the chess grid are symmetrically arranged along the center of the chess grid;

[0026] Figure 6 shows different arrangement methods of the position detection electrodes on two adjacent chess grids;

[0027] Figure 7 is a schematic diagram of the distribution of three position detection electrodes in the chess grid;

[0028] Figure 8 is a schematic diagram of the distribution of four position detection electrodes in the chess grid;

[0029] Figure 9 shows that the four position detection electrodes are symmetrically arranged in pairs along the center;

[0030] Figure 10 is a schematic diagram of the ring-shaped electrode provided at the bottom of the chess piece in this embodiment;

[0031] Figure 11 is a schematic diagram of encoding the bottom of the chess piece provided in this embodiment;

[0032] Figure 12 is a schematic diagram of the concentric ring-shaped electrodes provided in the groove of the chess grid in this embodiment;

[0033] Figure 13 shows the inlay of the lower conical shape of the chess piece and the chess grid. Detailed Embodiment

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] This embodiment provides an intelligent chess set with a visual guidance function. The above chess set can also be called a board game, which is a device composed of at least chess pieces, a chessboard, etc. In this solution, the chess pieces can be black and white chess pieces, chess pieces with words, symbols, patterns, etc., such as Go, Chinese chess, chess, etc. The chessboard can be a chessboard with any number of rows and columns and patterns. The chessboard is matched with the chess pieces when in use. When the user uses it, the chess pieces can be placed on or taken out of the chessboard according to different game rules.

[0036] Figure 1 It is a schematic diagram of the usage state of the intelligent chess set with a visual guidance function provided by this embodiment. As Figure 1 shown, the intelligent chess set includes a chessboard 20. There are multiple chess squares in the chessboard 20. An LED (i.e., a light-emitting device) is provided on each chess square, such as LED21 and LED22. The light-emitting devices of all the chess squares on the chessboard form a light display device. Combining Figure 1 , some chess squares are in an idle state (no piece is placed at this time), such as chess square QG1, and there are pieces above some chess squares, such as Q1 and Q2. When the user's finger approaches the chess square QG1, based on the capacitance sensor ( Figure 1 not shown in the figure) in the chess square QG1, it is detected that a finger is approaching, and it is determined which chess square the user's finger is approaching. Then, it is controlled that the LED22 provided in the chess piece (such as Q1) that can be placed on the chess square QG1 emits light to prompt the user that the chess piece Q1 can be placed on the chess square QG1. The chess set provided by this embodiment further includes the following components ( Figure 1 not shown in the figure): position detection electrodes in each chess square for forming the above capacitance sensor. The position detection electrodes are insulated from each other. The capacitance digital conversion circuit is respectively coupled to each position detection electrode. At least one light-emitting device (i.e., LED) for indicating the chess square is provided corresponding to each chess square; the processing module is respectively coupled to the capacitance digital conversion circuit and each recognition device, and independently drives each light-emitting device.

[0037] Figure 2 It is another schematic diagram of the usage state of the intelligent chess set with a visual guidance function provided by this embodiment. When the finger touches or approaches the chess piece Q3, this solution recognizes which specific chess piece the user's finger is approaching, and then controls the LED24 on the empty chess square QG2 where the chess piece Q3 can be placed to emit light to prompt the user that the chess piece Q3 can be placed on the empty chess square QG2.

[0038] This embodiment can also provide an intelligent appliance. Combining Figure 3The smart device is equipped with LEDs at each corner, namely LED 25, LED 26, LED 27, and LED 28, which indicate the chess squares they enclose. This solution can enclose an appropriate chess square range based on different game rules specified by the user. It should be noted that in an optional embodiment, the four corners of each chess square in the smart device provided by this solution are also equipped with LEDs to indicate each chess square. For example, when guiding the user to place a chess piece on a specific chess square, the LEDs at the four corners of the specific chess square can be controlled to flash to prompt the user.

[0039] In an optional embodiment, as Figure 4 As shown, a single chessboard 50 is provided with two position detection electrodes, a first position detection electrode 501 and a second position detection electrode 502. Figure 4 The first position detection electrode 501 and the second position detection electrode 502 are respectively arranged on both sides of the center O of the chessboard, that is, the line connecting the two position detection electrodes passes through the center O of the chessboard. It should be noted that the first position detection electrode 501 and the second position detection electrode 502 form capacitive electric field lines, thereby detecting the position of the user's finger.

[0040] In an optional embodiment, combined with Figure 5 The first position detection electrode 501 and the second position detection electrode 502 are symmetrically arranged along the center of the chessboard, that is, the midpoint of the line connecting the first position detection electrode 501 and the second position detection electrode 502 is the chessboard center O. It should be noted that different arrangements of the position detection electrodes will result in different electric field lines formed by the position detection electrodes.

[0041] In an optional embodiment, combined with Figure 6 , the chess square 50 and the chess square 60 are two adjacent chess squares on the chessboard, and the arrangement of the position detection electrodes on the two chess squares is different.

[0042] In an optional embodiment, combined with Figure 7 A single chessboard 50 includes a first position detection electrode 501, a second position detection electrode 502, and a third position detection electrode 503. The three position detection electrodes are arranged circumferentially around the center O of the chessboard. It should be noted that in this embodiment, the electric field lines generated vary depending on the number of position detection electrodes provided within the chessboard and the arrangement of the electrodes.

[0043] In an optional embodiment, combined with Figure 8, in a single chess grid 50, there are four position detection electrodes including a first position detection electrode 501, a second position detection electrode 502, a third position detection electrode 503, and a fourth position detection electrode 504, which are respectively arranged around the center of the chess grid. It should be noted that the above-mentioned "around" can be any area of a circle centered on the center of the chess grid where multiple position detection electrodes are distributed.

[0044] In an optional embodiment, combined with Figure 9 , in a single chessboard 50, there are four position detection electrodes including a first position detection electrode 501, a second position detection electrode 502, a third position detection electrode 503, and a fourth position detection electrode 504, which are respectively arranged around the center of the chess grid. Among them, the first position detection electrode 501 and the third position detection electrode 503 are symmetrically arranged along the center O, and the second position detection electrode 502 and the fourth position detection electrode 504 are symmetrically arranged along the center O.

[0045] In an optional embodiment, combined with Figure 10 , in this embodiment, multiple annular electrodes 101 are provided at the bottom of the chess piece as a graphic identifier, and the capacitance sensor formed by the detection electrodes on the chessboard identifies the above-mentioned graphic identifier to determine the identity type of the chess piece (such as rook, bishop, knight, pawn, etc.). That is, when the user picks up the chess piece and places it on the chess grid, this embodiment can identify the identity type of the chess piece based on the non-contact capacitance induction method, and then remind the user through a voice broadcast device (such as a speaker).

[0046] The above-mentioned graphic identifier can be encoded based on different ways of the annular electrode 101 at the bottom of the chess piece, and different encoded graphic identifiers can be used to represent chess pieces of different identities after being recognized. Combined with Figure 11 , the part with electrodes can be recognized as 1, and the part without electrodes can be recognized as 0. Then Figure 11 the encoding on the left is: 1010, Figure 11 and the encoding on the right is 0110. The different encodings can refer to chess pieces of different identity types.

[0047] It should be noted that in an optional embodiment, the electrodes provided in the chess grid groove can be used to detect the graphic identifier at the bottom of the chess piece, and the area outside the chess grid groove can be provided with position detection electrodes for detecting the position of the finger.

[0048] In an optional embodiment, combined with Figure 12, the multiple ring electrodes provided in the grid grooves include detection electrodes 401, 402, 403, and 404. The detection electrodes 401, 402, 403, and 404 are circular ring electrodes, and each circular ring electrode is insulated from each other and concentrically arranged. In an alternative solution, a planar mutual capacitance electric field can be constructed between two adjacent circular ring electrodes. For example, a mutual capacitance is formed between the circular ring electrodes 401 and 402. At this time, the capacitance digital conversion circuit inputs an excitation to the electrode 401 and receives it from the electrode 402. Similarly, a mutual capacitance is formed between the circular ring electrodes 402 and 403, and a mutual capacitance is formed between the circular ring electrodes 403 and 404. In another alternative solution, a self-capacitance electric field is constructed with each circular ring electrode 401, 402, 403, and 404. At this time, the capacitance digital conversion circuit inputs an excitation to each circular ring electrode and receives it from itself.

[0049] In an alternative embodiment, a alignment structure is provided corresponding to each grid. The alignment structure is used to guide the identifier at the bottom of the chess piece into the induction electric field of the capacitive sensor when the chess piece lands on the grid. When two adjacent circular ring electrodes are constructed into a mutual capacitance electric field, the landing of the chess piece is guided and aligned by the alignment structure. Each circular electrode at the bottom of the chess piece falls between the corresponding two adjacent circular ring electrodes, causing a change in the dielectric constant within the corresponding electric field space, and thus changing the output mutual capacitance value, achieving the above-mentioned recognition of 0 or 1. By encoding the outputs of each mutual capacitance electric field, the identity type of the chess piece can be known. When the circular ring electrodes are constructed into a self-capacitance electric field, the landing of the chess piece is guided and aligned by the alignment structure. Each circular electrode at the bottom of the chess piece exactly aligns with each circular ring electrode on the grid, thereby respectively causing a change in the self-capacitance output of each circular ring electrode. The identity type of the chess piece is known by encoding the self-capacitance output. The above detection electrodes can use dot electrodes to replace the setting of the circular ring electrodes, and the dot electrodes are arranged outward from the center of the grid.

[0050] As Figure 13 shown, in this solution, the lower part of the chess piece can be set in a conical shape, and the grid is set as a conical accommodation cavity adapted to the conical shape, which is convenient for guiding the identifier at the bottom of the chess piece to quickly fall into the induction electric field of the capacitive sensor when the chess piece lands on the grid.

[0051] In an alternative embodiment, a magnetic attraction device can be provided in the alignment structure to align the chess piece and the grid by magnetic attraction.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. An intelligent chess set with a visual guidance function, characterized in that: It includes a chessboard, a capacitance digital conversion circuit, a processing module, and at least two chess pieces; On each chess square on the top surface of the chessboard, there is an identification device for identifying the identity of the chess piece above the chess square, and at least two position detection electrodes are arranged around its center. Each of the position detection electrodes in the chess square forms a capacitance sensor, and the position detection electrodes on the chessboard are insulated from each other. The capacitance digital conversion circuit is respectively coupled to each position detection electrode; Each chess square is correspondingly provided with at least one light-emitting device for indicating the chess square, and the light-emitting devices on the chessboard form a light display device for pre-guiding the chess-playing position; The processing module is respectively coupled to the capacitance digital conversion circuit and each identification device, and independently drives each light-emitting device.

2. The intelligent chess set according to claim 1, wherein: Each chess square is correspondingly provided with at least two light-emitting devices emitting different colors of light.

3. The intelligent chess set according to claim 2, wherein: The light-emitting devices are respectively arranged at the corners of each chess square.

4. The intelligent chess set according to claim 1, characterized in that: On both sides of the chessboard close to the chess player, strip electrodes for coupling the capacitance digital conversion circuit are respectively provided.

5. The intelligent chess set according to claim 1, characterized in that: Each chess square is provided with a first position detection electrode and a second position detection electrode, and the first position detection electrode and the second position detection electrode are respectively arranged on both sides of the center of the chess square.

6. The intelligent chess set according to claim 5, characterized in that: The first position detection electrode and the second position detection electrode are symmetrically arranged along the center of the chess square; And / or, the arrangement directions of the position detection electrodes of adjacent two chess squares are different.

7. The intelligent chess set according to claim 1, characterized in that: Each chess square is provided with a first position detection electrode, a second position detection electrode, and a third position detection electrode, and the first position detection electrode, the second position detection electrode, and the third position detection electrode are arranged in a circumferential manner around the center of the chess square.

8. The intelligent chess set according to claim 1, characterized in that: Each chess square is provided with a first position detection electrode, a second position detection electrode, a third position detection electrode, and a fourth position detection electrode, and the first position detection electrode, the second position detection electrode, the third position detection electrode, and the fourth position detection electrode are respectively arranged around the center of the chess square.

9. The intelligent chess set according to claim 8, characterized in that: Each of the position detection electrodes on each chess square is symmetrically arranged along the center; And / or, the position detection electrodes on the left and right sides of the boundary line of the chess square are symmetrically arranged along the boundary line.

10. The intelligent chess set according to claim 1, characterized in that: The identification device includes zero, one or more graphic identifiers arranged at the bottom of each chess piece, and at least two detection electrodes arranged in each chess square; The dielectric constant difference between the graphic identifier and the chess piece body is greater than 4 times. The graphic identifiers on the chess piece are arranged outward from the center of the chess square to form a coding pattern, and the coding patterns of different types of chess pieces are different; Each of the detection electrodes within the chessboard squares is arranged outward from the center of the chessboard square and forms a capacitive sensor for non-contact induction of the coding pattern. At least one of the graphic identifier and the detection electrode is set as a ring. Each chessboard square is correspondingly provided with an alignment structure, and the alignment structure is used to guide the identifier at the bottom of the chess piece into the induction electric field of the capacitive sensor when the chess piece lands on the chessboard square; The capacitance digital conversion circuit is respectively coupled to each of the detection electrodes.

11. The intelligent chess set according to claim 10, wherein: The detection electrode is a ring electrode, and each of the ring electrodes within the chessboard square is mutually insulated and concentrically arranged; an adjacent two of the ring electrodes construct a planar mutual capacitance electric field. When the chess piece lands on the chessboard square, under the guiding action of the alignment structure, each identifier at the bottom of the chess piece respectively falls into different planar mutual capacitance electric fields; or, each ring electrode constructs a self-capacitance electric field, and when the chess piece lands on the chessboard square, under the guiding action of the alignment structure, each identifier at the bottom of the chess piece respectively falls into different self-capacitance electric fields.

12. The intelligent chess set according to claim 11, wherein: The graphic identifier is a ring identifier, and each of the ring identifiers on the chess piece is spaced apart and concentrically arranged.

13. The intelligent chess set according to claim 1, wherein: It further includes a voice broadcast device and / or a timer coupled to the processing module.

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