Label identification method and device and label identification equipment

Abstract

The embodiment of the invention provides a label identification method and device and label identification equipment, a processor on a chessboard scans staggered point positions on the chessboard according to a preset resonant frequency, and if chess pieces exist at the staggered point positions, the positions of the chess pieces are determined according to the staggered point positions; the chessboard sends preset signals with different resonant frequencies in sequence, when the preset frequencies of the chess pieces are the same as the sent resonant frequencies, the chess pieces start oscillation and generate resonant signals, and the resonant signals are amplified to obtain an amplified magnetic field; according to the embodiment of the invention, an LC resonator is utilized, and a matrix transmitting TX / receiving RX scanning mode is adopted to identify a label ID sequence formed by combining different frequencies, so that not only can the chess be positioned, but also the frequency of the chess is determined to be the preset resonant frequency. And the types of the chess pieces can be identified, and the cost is saved.

Description

Technical Field

[0001] The present invention relates to the field of wireless detection technology, and in particular to a tag recognition method, device and tag recognition equipment. Background Art

[0002] With the continuous development of science and technology, more and more people are starting to use electronic chessboards, which use RFID technology to identify the type and position of chess pieces. RFID tags need to be embedded inside each chess piece, which stores the chess piece's unique identifier (i.e., ID) and other related information. A reader is installed on the chessboard. When the RFID reader sends radio waves, the RFID tag on the chess piece receives these signals and sends back a response containing the chess piece ID. On the electronic chessboard, in order to achieve more accurate position identification, a large number of coils and RFID readers need to be arranged, and the implementation cost is high. How to locate and identify chess pieces at a low cost is an urgent problem that needs to be solved. Summary of the invention

[0003] In view of the above problems, embodiments of the present invention are proposed to provide a tag identification method, device, equipment and medium that overcome the above problems or at least partially solve the above problems.

[0004] In a first aspect, an embodiment of the present invention provides a tag recognition method, which is applied to a chessboard, wherein the chessboard at least includes a processor, and the method includes: Scanning the intersection point position on the chessboard according to the preset resonant frequency, and if there is a chess piece at the intersection point position, determining the chess piece position according to the intersection point position; The chessboard sends out signals of different preset resonant frequencies in sequence. When the preset frequency of the chess piece is the same as the emitted resonant frequency, it will vibrate and generate a resonant signal. By amplifying the resonant signal, an amplified magnetic field is obtained. The chess piece at the intersection point position in the amplified magnetic field is judged, and the frequency of the chess piece is determined to be the preset resonant frequency according to the change of the magnetic field of the chess piece.

[0005] Optionally, judging the chess piece at the intersection point position in the amplified magnetic field, and determining the frequency of the chess piece as the preset resonant frequency according to the change of the magnetic field of the chess piece, includes: If the resonant frequency in the chess piece is the same as the preset frequency at the intersection point, the frequency of the chess piece is determined to be the preset resonant frequency.

[0006] Optionally, the processor is used to scan the intersection point positions of each row and each column on the chessboard in sequence according to a preset resonant frequency.

[0007] Optionally, the chessboard sequentially sends signals of preset different resonance frequencies, and when the preset frequency of the chess piece is the same as the emitted resonance frequency, it will oscillate and generate a resonance signal, and the resonance signal is amplified to obtain an amplified magnetic field, including: Adjustable filtering is performed through an LC resonator, and a transistor is used as the first stage amplification and a signal amplifier is used as the second stage amplification to obtain an amplified magnetic field.

[0008] In a second aspect, an embodiment of the present invention provides a tag recognition device, which is applied to a chessboard, wherein the chessboard at least includes a processor, and the device includes: A scanning module, used to scan the intersection position on the chessboard according to a preset resonant frequency, and if there is a chess piece at the intersection position, determine the chess piece position according to the intersection position; an amplification model, used for sending a signal of a preset resonant frequency and amplifying the signal of the preset resonant frequency to obtain an amplified magnetic field; The judging module is used to judge the chess piece at the intersection point position in the amplified magnetic field, and determine that the frequency of the chess piece is the preset resonant frequency according to the change of the magnetic field of the chess piece.

[0009] In a third aspect, an embodiment of the present invention provides a tag identification device, comprising: a chessboard and chess pieces, wherein the chess pieces are not directly connected to the chessboard, but are connected to the chessboard through magnetic field induction, and the chessboard is used to execute any tag identification method as described in the first aspect.

[0010] Optionally, the processor in the chessboard is a single-chip microcomputer.

[0011] Optionally, the single chip microcomputer is a GPT1000A chip.

[0012] Optionally, the resonators in the chessboard are LC resonators.

[0013] Optionally, an LC oscillator is provided in the chess piece.

[0014] The embodiments of the present invention include the following advantages: The tag identification method, device and tag identification equipment provided by the embodiments of the present invention scan the intersection point position on the chessboard according to the preset resonant frequency through the processor on the chessboard. If there is a chess piece at the intersection point position, the chess piece position is determined according to the intersection point position; the chessboard sends preset signals of different resonant frequencies in sequence, and when the preset frequency of the chess piece is the same as the emitted resonant frequency, it will oscillate and generate a resonant signal, and the amplified magnetic field is obtained by amplifying the resonant signal; the chess piece at the intersection point position in the amplified magnetic field is judged, and the frequency of the chess piece is determined to be the preset resonant frequency according to the change of the magnetic field of the chess piece. The embodiment of the present application uses an LC resonator and transmits TX / receives RX scanning through a matrix to identify the tag ID sequence formed by different frequency combinations, which can not only locate the chess piece, but also identify the type of the chess piece, and also save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a flowchart of steps of an embodiment of a tag identification method of the present invention; Figure 2 It is a structural schematic diagram of a tag identification device of the present invention; Figure 3 It is an LC parallel circuit diagram of the present invention; Figure 4 is a flowchart of steps of another embodiment of a tag identification method of the present invention; Figure 5 It is a schematic diagram of the structure of a power amplifier of the present invention; Figure 6 is a schematic diagram of a multiplexer switching of the present invention; Figure 7 is a flowchart of steps of another tag identification method embodiment of the present invention; Figure 8 It is a structural schematic diagram of a chessboard of the present invention; Fig. 9 is a schematic diagram of a series resonance of the present invention; Fig.10 is a schematic diagram of a signal of the present invention; Fig.11 It is a structural block diagram of an embodiment of a tag identification device of the present invention. DETAILED DESCRIPTION

[0016] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] An embodiment of the present invention provides a tag recognition method for locating and identifying chess pieces on a chessboard. The execution subject of this embodiment is a tag recognition device, which is arranged on the chessboard.

[0018] Reference Figure 1 , shows a flowchart of a tag identification method embodiment of the present invention, applied to a chessboard, the chessboard at least includes a processor, the method may specifically include the following steps: S101, scanning the intersection position on the chessboard according to the preset resonant frequency, and if there is a chess piece at the intersection position, determining the chess piece position according to the intersection position; The processor scans the intersection positions on the chessboard by row and column according to all different resonant frequencies. If a chess piece is found at an intersection position, the position information of the intersection position is used as the position information of the chess piece, thereby realizing the positioning of the chess piece.

[0019] S102, the chessboard sends signals of preset different resonance frequencies in sequence, and when the preset frequency of the chess piece is the same as the emitted resonance frequency, it will oscillate and generate a resonance signal, and the resonance signal is amplified to obtain an amplified magnetic field; S103, judging the chess piece at the intersection point position in the amplified magnetic field, and determining the frequency of the chess piece to be a preset resonant frequency according to the change of the magnetic field of the chess piece.

[0020] The processor also needs to identify the label information of each chess piece, that is, the resonant frequency of each chess piece is different, and the resonant frequency of the chess piece needs to be identified. Specifically, the processor transmits a signal of a certain resonant frequency. When the resonant frequency of the chess piece is the same as the transmitted resonant frequency, an oscillation signal is generated, and the signal of the resonant frequency is amplified to obtain an amplified magnetic field, and then the chess piece at the intersection point position in the amplified magnetic field is judged, and the frequency of the chess piece is determined to be the preset resonant frequency according to the change of the magnetic field of the chess piece.

[0021] In the embodiment of the present application, the chess piece can be positioned first, or the tag of the chess piece can be identified first, or the positioning and tag identification can be performed at the same time, which is not specifically limited in the embodiment of the present application.

[0022] The tag identification method provided by the embodiment of the present invention uses a processor on the chessboard to scan the intersection point position on the chessboard according to a preset resonant frequency. If there is a chess piece at the intersection point position, the chess piece position is determined according to the intersection point position; the chessboard sends preset signals of different resonant frequencies in sequence, and when the preset frequency of the chess piece is the same as the emitted resonant frequency, it will oscillate and generate a resonant signal, and the amplified magnetic field is obtained by amplifying the resonant signal; the chess piece at the intersection point position in the amplified magnetic field is judged, and the frequency of the chess piece is determined to be the preset resonant frequency according to the change of the magnetic field of the chess piece. The embodiment of the present application uses an LC resonator and a matrix transmission TX / reception RX scanning method to identify the tag ID sequence formed by different frequency combinations, which can not only locate the chess piece, but also identify the type of the chess piece, and also save costs.

[0023] Another embodiment of the present invention further supplements the tag identification method provided in the above embodiment.

[0024] Optionally, judging the chess piece at the intersection point position in the amplified magnetic field, and determining the frequency of the chess piece as a preset resonant frequency according to the change of the magnetic field of the chess piece, includes: If the resonant frequency in the chess piece is the same as the preset frequency at the intersection point, the frequency of the chess piece is determined to be the preset resonant frequency.

[0025] Optionally, the processor is used to scan the intersection point positions of each row and each column on the chessboard in sequence according to a preset resonant frequency.

[0026] Optionally, the chessboard sequentially sends signals of preset different resonant frequencies, and when the preset frequency of the chess piece is the same as the emitted resonant frequency, it will oscillate and generate a resonant signal, and the resonant signal is amplified to obtain an amplified magnetic field, including: Adjustable filtering is performed through an LC resonator, and a transistor is used as the first stage amplification and a signal amplifier is used as the second stage amplification to obtain an amplified magnetic field.

[0027] The embodiments of the present application provide a relatively low-cost method for realizing ID identification and position identification of chess or checkers pieces. As the number of chess pieces is relatively small (e.g., 14 IDs for chess and 12 IDs for checkers), using frequency as a distinction of tag IDs is a competitive solution.

[0028] In view of the deficiencies in the prior art, the embodiments of the present application provide a low-cost detection solution, including an LC reader and an ID tag.

[0029] First, a series of unique frequencies need to be selected to represent different chess pieces. These frequencies do not interfere with each other to ensure that each chess piece can be accurately identified. For chess and checkers, 14 or 12 different frequencies are selected to correspond to the tags of their chess pieces. An LC oscillator capable of transmitting the selected frequency is embedded inside each chess piece, and the tag is connected to a conductive pad in parallel with the LC inside and embedded inside the chess piece.

[0030] A row and column matrix is ​​set on the chessboard, which serves as an LC receiving device for transmitting TX / receiving RX, and can detect and identify signals of different frequencies. The receiving device is placed below the chessboard so that it can receive the signal sent by the chess piece. Since simple frequency recognition cannot directly determine the position of the chess piece, it is necessary to arrange an LC resonator under the chessboard, where the MCU processor sends out different resonant frequencies in sequence, and generates a magnetic field of the frequency on the coil after boosting.

[0031] If a tag (resonance frequency fk) is placed on the barcode reader (i.e., LC receiving device), if the LC resonant frequency in the chess piece is the same as the resonant frequency (fk) sent by the MCU controller, it will oscillate. The receiving end of the LC receiving device is a conductive disk (pad), which is connected to the conductive disk under the chess piece. It receives the electric field signal sent by the chess piece. After the center frequency of the amplified adjustable filter (bandpass filter) is the same as the TX transmission frequency fk. After integer processing (Slicer), the MCU controller will make a judgment. If a tag exists, there will be a corresponding signal, otherwise there will be no signal. In this way, it can be known whether there is a tag with an LC resonance frequency of fk at the interlaced position of the transmitting TXm and the receiving RXn, so as to determine the position of the chess piece.

[0032] It should be noted that, for the sake of simplicity, the method embodiments are described as a series of action combinations, but those skilled in the art should be aware that the embodiments of the present invention are not limited by the order of the actions described, because according to the embodiments of the present invention, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

[0033] The tag identification method provided by the embodiment of the present invention uses a processor on the chessboard to scan the intersection point position on the chessboard according to a preset resonant frequency. If there is a chess piece at the intersection point position, the chess piece position is determined according to the intersection point position; the chessboard sends preset signals of different resonant frequencies in sequence, and when the preset frequency of the chess piece is the same as the emitted resonant frequency, it will oscillate and generate a resonant signal, and the amplified magnetic field is obtained by amplifying the resonant signal; the chess piece at the intersection point position in the amplified magnetic field is judged, and the frequency of the chess piece is determined to be the preset resonant frequency according to the change of the magnetic field of the chess piece. The embodiment of the present application uses an LC resonator and a matrix transmission TX / reception RX scanning method to identify the tag ID sequence formed by different frequency combinations, which can not only locate the chess piece, but also identify the type of the chess piece, and also save costs.

[0034] Another embodiment of the present invention provides a tag identification device, which is used to execute the tag identification method provided in the above embodiment.

[0035] Reference Fig.11 , shows a structural block diagram of an embodiment of a tag identification device of the present invention, which is applied to a chessboard, and the chessboard at least includes a processor. The device may specifically include the following modules: a scanning module 1101, an enlargement model 1102 and a judgment module 1103, wherein: The scanning module 1101 is used to scan the intersection position on the chessboard according to the preset resonance frequency, and if there is a chess piece at the intersection position, the chess piece position is determined according to the intersection position; The amplification model 1102 is used for the chessboard to sequentially send signals of different preset resonant frequencies. When the preset frequency of the chess piece is the same as the emitted resonant frequency, it will oscillate and generate a resonant signal. By amplifying the resonant signal, an amplified magnetic field is obtained; The judgment module 1103 is used to judge the chess piece at the intersection point position in the amplified magnetic field, and determine that the frequency of the chess piece is a preset resonant frequency according to the change of the magnetic field of the chess piece.

[0036] The tag identification device provided by the embodiment of the present invention uses a processor on the chessboard to scan the intersection point position on the chessboard according to a preset resonant frequency. If there is a chess piece at the intersection point position, the chess piece position is determined according to the intersection point position; the chessboard sends preset signals of different resonant frequencies in sequence, and when the preset frequency of the chess piece is the same as the emitted resonant frequency, it will oscillate and generate a resonant signal, and the amplified magnetic field is obtained by amplifying the resonant signal; the chess piece at the intersection point position in the amplified magnetic field is judged, and the frequency of the chess piece is determined to be the preset resonant frequency according to the change of the magnetic field of the chess piece. The embodiment of the present application uses an LC resonator and a matrix transmission TX / reception RX scanning method to identify the tag ID sequence formed by different frequency combinations, which can not only locate the chess piece, but also identify the type of the chess piece, and also save costs.

[0037] Another embodiment of the present invention further supplements the description of the tag identification device provided in the above embodiment.

[0038] Optionally, the judging module is used to: If the resonant frequency in the chess piece is the same as the preset frequency at the intersection point, the frequency of the chess piece is determined to be the preset resonant frequency.

[0039] Optionally, the scanning module is used to scan the intersection point positions of each row and each column on the chessboard in sequence according to a preset resonant frequency.

[0040] Optionally, scale up the model for: Adjustable filtering is performed through an LC resonator, and a transistor is used as the first stage amplification and a signal amplifier is used as the second stage amplification to obtain an amplified magnetic field.

[0041] It should be noted that each implementable method in this embodiment may be implemented separately, or may be implemented in combination in any combination without conflict, and this application is not limited thereto.

[0042] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0043] The tag identification device provided by the embodiment of the present invention uses a processor on the chessboard to scan the intersection point position on the chessboard according to a preset resonant frequency. If there is a chess piece at the intersection point position, the chess piece position is determined according to the intersection point position; the chessboard sends preset signals of different resonant frequencies in sequence, and when the preset frequency of the chess piece is the same as the emitted resonant frequency, it will oscillate and generate a resonant signal, and the amplified magnetic field is obtained by amplifying the resonant signal; the chess piece at the intersection point position in the amplified magnetic field is judged, and the frequency of the chess piece is determined to be the preset resonant frequency according to the change of the magnetic field of the chess piece. The embodiment of the present application uses an LC resonator and a matrix transmission TX / reception RX scanning method to identify the tag ID sequence formed by different frequency combinations, which can not only locate the chess piece, but also identify the type of the chess piece, and also save costs.

[0044] Another embodiment of the present invention provides a tag identification device, including: a chessboard and chess pieces, wherein the chess pieces are not directly connected to the chessboard, the chess pieces and the chessboard are induced by a magnetic field, and the chessboard is used to execute any of the above-mentioned tag identification methods.

[0045] Optionally, the processor in the chessboard is a single-chip microcomputer.

[0046] Optionally, the single chip microcomputer is a GPT1000A chip.

[0047] Optionally, the resonators in the chessboard are LC resonators.

[0048] Optionally, an LC oscillator is provided in the chess piece.

[0049] The embodiment of the present application provides a relatively low-cost approach. For example, a general chess game has 14 IDs and a chess game has 12 IDs. If the number is small, the frequency is used as the distinction between tag IDs.

[0050] like Figure 2 As shown, the blue part is the coil with LC to generate the magnetic field, and the green part is the conductive disk (pad) to receive the electric field. There are M groups of transmitting coils (TX) and N groups of receiving coils (RX). The transmitting coils and receiving coils are distributed in a matrix on the same PCB circuit board (i.e., chessboard base).

[0051] Inside the chess piece is an LC parallel circuit connected to a conductive disk (pad). The LC frequency of each tag is different, such as Figure 3 .

[0052] Figure 4 The schematic diagram shows a certain transmitting TX group (TXm) and receiving RX group (RXn). Assuming there are K tags, there are K LC resonant combinations. The MCU controller (processor) sends these resonant frequencies in sequence, and after boosting, a magnetic field of the frequency is generated on the coil. At this time, if a tag (resonant frequency fk) is placed on the receiving plate (pad) of the code reader (receiving device), if the LC resonant frequency in the chess piece is the same as the resonant frequency (fk) sent by the MCU controller, it will start to oscillate. Since LC itself forms a resonant loop, a larger coil is not required. However, the magnetic field receiving ability is related to the size of the coil, so the magnetic field that this tag can sense is not large, and the resonant voltage is not high. Adding a coil appropriately can increase the sensing ability. As shown in Formula 1, the magnetic field is related to the number of coils (coil) and the area. When the resonant signal of the chess piece is connected to its conductive plate (pad), it will be sent in the form of an electric field. Similarly, the size of this electric field signal depends on the size of the magnetic field resonance signal.

[0053] ; Where: B: magnetic field strength; N: number of coil turns; I: current; A: coil radius; r: distance from the coil; After testing, LC directly induced magnetic field, and there can be a resonance signal of about 1~1.5V under the driving current of 100mA / 125KHz.

[0054] The receiving end on the chessboard is a conductive pad that receives the electric field signal sent by the chess piece. The electric field signal is amplified, and the center frequency of the adjustable filter (bandpass filter) is the same as the TX transmission frequency fk. After integer processing (Slicer), the MCU controller will make a judgment. If there is a tag, there will be a corresponding signal, otherwise there will be no signal. In this way, it can be known whether there is a tag with LC resonance at the frequency fk at the intersection of the transmitting TXm and the receiving RXn.

[0055] The transmitter TX sends out all possible resonant frequencies (fk, k=1~K) in sequence for judgment, and then it can be determined whether there is a tag at this point. The same transmitter group TX is matched with different receivers RX (n=1~N), and the same column can be scanned. Then another transmitter group TX (m=1~M) can be scanned, and all the intersection points can be scanned in this way. At the same time, the types and locations of all the chess pieces (tags) on the entire chessboard can be known.

[0056] in: Amp: Amplifier Adjustable Bandpass Filter: Adjustable filter Envelope detector: Envelope detector Slicer: Shaper Controller: Boost: Power Amplifier The power amplifier (Boost) can usually be implemented using LC, such as Figure 5 .

[0057] The resonance formula is shown in Formula 2.

[0058] ...Formula 2.

[0059] Where: B: magnetic field strength; N: number of coil turns; I: current; A: coil radius; r: distance from the coil; After testing, LC directly induced magnetic field, and there can be a resonance signal of about 1~1.5V under the driving current of 100mA / 125KHz.

[0060] The receiving end on the chessboard is a conductive pad that receives the electric field signal sent by the chess piece. The electric field signal is amplified, and the center frequency of the adjustable filter (bandpass filter) is the same as the TX transmission frequency fk. After integer processing (Slicer), the MCU controller will make a judgment. If there is a tag, there will be a corresponding signal, otherwise there will be no signal. In this way, it can be known whether there is a tag with LC resonance at the frequency fk at the intersection of the transmitting TXm and the receiving RXn.

[0061] The transmitter TX sends out all possible resonant frequencies (fk, k=1~K) in sequence for judgment, and then it can be determined whether there is a tag at this point. The same transmitter group TX is matched with different receivers RX (n=1~N), and the same column can be scanned. Then another transmitter group TX (m=1~M) can be scanned, and all the intersection points can be scanned in this way. At the same time, the types and locations of all the chess pieces (tags) on the entire chessboard can be known.

[0062] in: Amp: Amplifier Adjustable Bandpass Filter: Adjustable filter Envelope detector: Envelope detector Slicer: Shaper Controller: Boost: Power Amplifier The power amplifier (Boost) can usually be implemented using LC, such as Figure 5 .

[0063] The resonance formula is shown in Formula 2.

[0064] ...Formula 2.

[0065] To save costs, the TX & RX can use the same circuit and switch using a multiplexer, such as Figure 6 .

[0066] Note: Amp: Amplifier Adjustable Bandpass Filter: Adjustable filter Envelope detector: Envelope detector Slicer: Shaper Controller: Boost: Power Amplifier Multiplexer: Adjustable L: Adjustable inductance The GPT1000A chip has a built-in multiplexer, so this chip was used for development.

[0067] The transmitting end uses four groups of L to provide 16 resonance combinations.

[0068] The receiving end uses LC as an adjustable bandpass filter. Considering the bandwidth issue, a transistor is used as the first stage amplification, and a signal amplifier (OP AMP) is used as the second stage amplification. Figure 7 .

[0069] The receiving end can also use coils for magnetic induction. The receiving architecture is as follows Figure 8 .

[0070] If adopted Figure 3 The parallel tags, at this time the RX induction coil induction energy increases.

[0071] If adopted Fig. 9 Due to the series resonance, the tag will consume energy, absorb part of the energy of the transmitter (TX), and reduce the energy induced by the receiver (RX).

[0072] As the energy induced by the receiver (RX) decreases, a notch will appear in the frequency band, and the MCU controller can detect the signal, such as Fig.10 shown.

[0073] Using LC resonator and matrix transmission TX / reception RX scanning mode, the tag ID sequence formed by different frequency combinations is identified.

[0074] The tag identification method, device and tag identification equipment provided by the embodiments of the present invention scan the intersection point position on the chessboard according to the preset resonant frequency through the processor on the chessboard. If there is a chess piece at the intersection point position, the chess piece position is determined according to the intersection point position; the chessboard sends preset signals of different resonant frequencies in sequence, and when the preset frequency of the chess piece is the same as the emitted resonant frequency, it will oscillate and generate a resonant signal, and the amplified magnetic field is obtained by amplifying the resonant signal; the chess piece at the intersection point position in the amplified magnetic field is judged, and the frequency of the chess piece is determined to be the preset resonant frequency according to the change of the magnetic field of the chess piece. The embodiment of the present application uses an LC resonator and transmits TX / receives RX scanning through a matrix to identify the tag ID sequence formed by different frequency combinations, which can not only locate the chess piece, but also identify the type of the chess piece, and also save costs.

[0075] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0076] It will be appreciated by those skilled in the art that the embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the embodiments of the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0077] The embodiments of the present invention are described with reference to flowcharts and / or block diagrams of methods, electronic devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing electronic device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing electronic device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0078] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing electronic device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0079] These computer program instructions can also be loaded onto a computer or other programmable data processing electronic device so that a series of operating steps are executed on the computer or other programmable electronic device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable electronic device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0080] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0081] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or electronic device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or electronic device. In the absence of further restrictions, the elements defined by the sentence "comprises a..." do not exclude the presence of other identical elements in the process, method, article or electronic device that includes the elements.

[0082] The above is a detailed introduction to a tag identification method and a tag identification device provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A tag recognition method, characterized in that: Applied to a chessboard, the chessboard at least comprising a processor, the method comprising: Scanning the intersection point position on the chessboard according to the preset resonant frequency, and if there is a chess piece at the intersection point position, determining the chess piece position according to the intersection point position; The chessboard sends out signals of different preset resonant frequencies in sequence. When the preset frequency of the chess piece is the same as the emitted resonant frequency, it will vibrate and generate a resonant signal. By amplifying the resonant signal, an amplified magnetic field is obtained. The chess piece at the intersection point position in the amplified magnetic field is judged, and the frequency of the chess piece is determined to be the preset resonant frequency according to the change of the magnetic field of the chess piece.

2. The method according to claim 1, characterized in that The step of judging the chess piece at the intersection point in the amplified magnetic field and determining the frequency of the chess piece to be the preset resonant frequency according to the change of the magnetic field of the chess piece comprises: If the resonant frequency in the chess piece is the same as the preset frequency at the intersection point, the frequency of the chess piece is determined to be the preset resonant frequency.

3. The method according to claim 1, characterized in that The processor is used to scan the intersection point positions of each row and each column on the chessboard in sequence according to the preset resonance frequency.

4. The method according to claim 1, characterized in that: The chessboard sequentially sends signals of preset different resonant frequencies. When the preset frequency of the chess piece is the same as the emitted resonant frequency, it will vibrate and generate a resonant signal. By amplifying the resonant signal, an amplified magnetic field is obtained, including: Adjustable filtering is performed through an LC resonator, and a transistor is used as the first stage amplification and a signal amplifier is used as the second stage amplification to obtain an amplified magnetic field.

5. A tag recognition device, characterized in that: Applied to a chessboard, the chessboard at least comprises a processor, and the device comprises: A scanning module, used to scan the intersection position on the chessboard according to a preset resonant frequency, and if there is a chess piece at the intersection position, determine the chess piece position according to the intersection position; The amplification model is used for the chessboard to sequentially send signals of preset different resonant frequencies. When the preset frequency of the chess piece is the same as the emitted resonant frequency, it will oscillate and generate a resonant signal. By amplifying the resonant signal, the amplified magnetic field is obtained; The judging module is used to judge the chess piece at the intersection point position in the amplified magnetic field, and determine that the frequency of the chess piece is the preset resonant frequency according to the change of the magnetic field of the chess piece.

6. A tag identification device, characterized in that: include: A chessboard and chess pieces, wherein the chess pieces are not directly connected to the chessboard, but are connected to the chessboard through magnetic field induction, and the chessboard is used to execute the tag recognition method as described in any one of claims 1-4.

7. The device according to claim 6, characterized in that The processor in the chessboard is a single chip microcomputer.

8. The device according to claim 6, characterized in that The single chip microcomputer is a GPT1000A chip.

9. The device according to claim 6, characterized in that The resonators in the chessboard are LC resonators.

10. The device according to claim 6, characterized in that The chess piece is provided with an LC oscillator.

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