Book identification sounding device and book suit

Abstract

The utility model discloses a book identification sounding device and a book suit. The device comprises a master control circuit; the main control circuit is electrically connected with a magnetic identification circuit; and the magnetic identification circuit is used for sensing a magnetic piece arranged at the book to generate an electric signal and transmitting the electric signal to the main control circuit. According to the scheme, the books are identified through the two groups of magnetic identification parts, magnetic induction is adopted, the traditional identification based on an easily-damaged bar code form is not needed, and convenience is brought to use of the books.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic identification and sound-generating books, in particular to a book identification and sound-generating device and a book set. Background Art

[0002] Traditional paper books require users to have the ability to recognize images and text in order to be used effectively. For children's books, audio playback is a preferred option, which enables users to obtain corresponding knowledge points through sound when using them. E-books meet this requirement very well.

[0003] Traditional electronic books are one-to-one, that is, an electronic book can only send out content that is suitable for the electronic book. Specifically, it can be played through pre-stored data, and when it is recognized, the content is played directly. When it is recognized, the sound is played through various pressing circuits.

[0004] In order to solve the problem of single book recognition and playback, some new technologies have emerged, such as identifying different books through image recognition, and playing after matching the recognized information with pre-stored data or remote system data.

[0005] Such technology can well solve the problem of a book device identifying multiple different books for audio or image playback. For example, the technology with patent application number 202210640286.4 proposes a method for reading and playing audio files, which connects a card containing a barcode to an audio device in a directional manner, and uses a barcode recognition module and a rotation module to identify the barcode set on the card to provide audio playback instructions. The audio device is controlled to play the corresponding audio content by scanning the barcode instructions on the card through the audio device. The card used only needs to contain barcode information, and the card does not need to contain a chip inside, which reduces the production cost of the card to a certain extent. However, there are also some problems. For example, image recognition is not conducive to recognition because the identification code may be torn or graffitied, and thus reasonable use cannot be guaranteed.

[0006] Therefore, the above technical problems need to be solved. Utility Model Content

[0007] In order to overcome the shortcomings of the prior art, the utility model proposes a book identification sound device and a book set, aiming to solve the problem in the prior art that the identification code of the book cannot be well identified because the identification code is easily damaged or graffitied.

[0008] In order to solve the above technical problems, the basic technical solution proposed by the utility model is:

[0009] A book recognition and sound generating device comprises a main control circuit; the main control circuit is electrically connected to a magnetic recognition circuit, the magnetic recognition circuit is used to sense a magnetic part arranged at a book place to generate an electrical signal and transmit it to the main control circuit;

[0010] The magnetic recognition circuit is configured to have a first magnetic recognition unit and a second magnetic recognition unit; the first magnetic recognition unit is used to sense a first magnetic induction electric signal of the book and feed it back to the main control circuit so that the main control circuit activates the second magnetic recognition unit to sense the book and obtain a second magnetic induction electric signal according to the first magnetic induction electric signal.

[0011] Furthermore, the first magnetic identification unit includes a first electromagnetic sensor, and the first electromagnetic sensor is electrically connected to the main control circuit.

[0012] Furthermore, the second magnetic identification part includes at least one second electromagnetic sensor, and the at least one second electromagnetic sensor is electrically connected to the main control circuit.

[0013] Furthermore, the second magnetic identification includes four second electromagnetic sensors, and the four electromagnetic sensors are electrically connected to the main control circuit respectively.

[0014] Furthermore, the main control circuit is also electrically connected to a sound circuit, and the sound circuit is used to emit sounds associated with the content of the corresponding external book.

[0015] Furthermore, the book recognition and sound-generating device further comprises a substrate, which has a placement area for placing books and a control area;

[0016] The magnetic identification circuit is located at the placement area, and is used for magnetic induction with the book when the book is placed in the placement area so as to facilitate the main control circuit to identify the book.

[0017] Furthermore, the control area has a shell protruding upward from the surface of the substrate, and the shell and the magnetic identification circuit are arranged on both sides so that when the book is placed in the placement area and laterally positioned in contact with the shell, the corresponding magnetic part of the book is opposite to the magnetic identification circuit.

[0018] Furthermore, the main control circuit is arranged on a first circuit board, and the magnetic identification circuit is arranged on a second circuit board; the second circuit board is a flexible circuit board and is located inside the placement area of ​​the substrate.

[0019] In addition, the utility model also proposes a book set, including at least one book and any of the above-mentioned book recognition and sound-emitting devices; each of the books has a magnetic piece at a corresponding position, and when the book is placed on the book recognition and sound-emitting device, it can be recognized by the book recognition and sound-emitting device and the corresponding content can be played.

[0020] The beneficial effects of the utility model are:

[0021] The technical solution of the utility model is a book recognition and sound-generating device and a book set, the book recognition and sound-generating device comprises a main control circuit, the main control circuit is electrically connected to a magnetic recognition circuit, the magnetic recognition circuit is used to sense and generate an electrical signal with a magnetic member provided at the book and transmit it to the main control circuit. That is, in this solution, the book is recognized by two groups of magnetic recognition parts, and it is magnetic induction, and does not require the traditional recognition based on the easily damaged barcode form, which is conducive to the convenient use of the book. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the appearance of a book recognition sound-generating device;

[0023] Figure 2 This is a circuit principle block diagram of the book recognition and sound-generating device of the utility model;

[0024] Figure 3 A specific circuit diagram of the main control chip U1 of the main control circuit;

[0025] Figure 4 It is the specific circuit diagram of SPI memory chip U2;

[0026] Figure 5 is a specific circuit diagram of the recording circuit;

[0027] Figure 6 A specific circuit diagram of a language switching switch circuit;

[0028] Figure 7 A specific circuit diagram of a key circuit;

[0029] Figure 8 It is a structural schematic diagram of a magnetic identification circuit;

[0030] Fig. 9 A specific circuit diagram for a magnetic identification circuit;

[0031] Fig.10 A second specific embodiment for locating books;

[0032] Fig.11 A third specific embodiment for locating books. DETAILED DESCRIPTION

[0033] The following will be combined with the attached Figure 1 To Attachment Fig.11The technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] It should be noted that the directions involved in the embodiments of the present invention shall be based on the directions shown in the drawings. If a certain posture changes, the directional indication will also change accordingly.

[0035] Traditional electronic identification of talking books is based on image recognition, which is very convenient to use. However, there are also some problems. For example, since image recognition is based on images such as QR codes and bar codes, when the QR code is damaged or graffitied, it is illegal to identify and cannot be used effectively. In particular, for children's books, due to the nature of children, the probability of the identification code of the book being graffitied or damaged is relatively high, so it is necessary to solve this problem.

[0036] Therefore, the utility model proposes a new technology, which mainly realizes inductive recognition through a magnetic inductive structure, thereby solving the problem that the book can be recognized even if the surface is graffitied or the paper is damaged, thus ensuring the effective use of the book.

[0037] refer to Figure 1 In a specific embodiment, the book recognition and sound-generating device of the present solution includes a substrate 30, which has a placement area 301 for placing books and a control area 302. Specifically, the substrate 30 serves as the basis of the entire book recognition and sound-generating device. The substrate 30 is, for example, a plate-like structure, such as plastic injection molding. The substrate 30 is a thin sheet structure with a certain bending resistance and strength. It is not easy to break when subjected to force. The shape of the substrate 30 can be various, such as rectangular, square, circular, polygonal, etc.; it can be set according to different uses.

[0038] Importantly, in this embodiment, the substrate 30 has a placement area 301 for placing books and a control area 302. The placement area 301 is used to place books, so that the user can place the corresponding book thereon to be recognized by the book recognition and sound emitting device.

[0039] The control area 302 is used to install part or all of the circuit structure of the book recognition and sound-generating device. Of course, in this embodiment, the placement area 301 and the control area 302 can be different areas on a surface of the substrate 30. For example, the substrate 30 has an upper surface, and the placement area 301 and the control area 302 are two parts of the upper surface. The placement area 301 and the control area 302 can be the same plane, or different planes, such as a stepped surface. For example, in the thickness direction of the substrate 30, the plane where the placement area 301 is located is lower than the plane where the control area 302 is located.

[0040] In detail, in a specific embodiment, the control area 302 has a housing 40 that protrudes upward from the surface of the substrate 30. The housing 40 is provided with a corresponding circuit and an operating structure. The housing 40 is, for example, configured to be detachably connected to the substrate 30. In addition to accommodating the corresponding circuit and operating structure, the housing 40 can also serve as a function of positioning the book, and this structure will be described in detail below. Among them, the housing 40 can be designed into different shapes, such as a plant or animal imitation design, or designed into other geometric three-dimensional shapes.

[0041] Detailed, such as Figure 2 As shown, the book recognition sound device proposed by the utility model includes a main control circuit 10. The main control circuit 10 is mainly used for controlling the entire sound device and playing the sound. Specifically, the main control circuit 10 is, for example, a main control chip U1, and the main control chip U1 can be implemented using existing technology. Figure 3 As shown, a specific circuit diagram of a main control chip U1 is proposed, which has multiple different functional contact terminals, and can realize corresponding functions when connected to corresponding functional circuits.

[0042] like Figure 2 The book recognition and sound generating device further includes a storage circuit 80, which is electrically connected to the main control circuit 10 and is used to store data. For example, it can store pre-stored music, book data, etc. The storage circuit 80 can be a memory card or a memory chip, such as an SPI memory chip U2. Specifically, as an example, the specific circuit diagram of the SPI memory chip U2 is as follows: Figure 4 As shown, the SPI storage chip U2 is connected to the corresponding interface of the main control chip U1, as shown in FIG. Figure 3 and Figure 4 It should be understood that in this embodiment, the SPI storage chip U2 is a specific embodiment, which is not actually limited to this. It is only used as a specific embodiment here, and therefore the protection scope of this solution cannot be limited thereby.

[0043] like Figure 2As shown, the book recognition and sound generating device further includes a recording circuit 90, which is electrically connected to the main control circuit 10 for implementing a recording operation. Specifically, as a feasible embodiment, the circuit diagram of the recording circuit 90 is as follows: Figure 5 As shown, the MIC-BIAS interface and the MIC interface of the recording circuit 90 are respectively connected to the PA13 / ADC10 interface and the PBI / MIC interface of the main control chip U1. Of course, the specific circuit of the recording circuit 90 is not limited to this, and can also be any other suitable recording circuit. This is only used as an example, and the protection scope of this solution should not be limited thereby.

[0044] like Figure 2 As shown, the book recognition and sound generating device further includes a language switching circuit 100, which is electrically connected to the main control circuit 10 to switch the interactive language, such as switching between Chinese and English. In a specific embodiment, the language switching circuit 100 is specifically configured as follows: Figure 6 As shown, the language switching circuit 100 is connected to the corresponding interface of the main control chip U1, see Figure 3 and Figure 6 Of course, it should be understood that this embodiment only points out a specific language switching circuit, and in fact any suitable circuit can be used to implement it, so the protection scope of this solution cannot be limited by this.

[0045] like Figure 2 As shown, the book recognition and sound-generating device also includes a power supply circuit 110. The power supply circuit 110 is connected to the main control circuit 10 to realize power supply for the entire book recognition and sound-generating device. In detail, the power supply circuit 110 includes an interface branch and a charging point control branch. In a specific embodiment, the interface branch adopts a TYPE-C interface, and the charging control branch adopts a charging chip of model 4057. The TYPE-C interface and the 4057 charging chip are both connected to the power interface of the main control chip U1. It should be understood that the specific circuits of the interface branch and the charging control branch can be implemented by any suitable circuit. In this embodiment, only one embodiment is proposed, but the protection scope of the present technical solution cannot be limited by this. In addition, such as Figure 2 The book recognition and sound generating device shown in the figure also includes a power switch circuit 120. The power switch circuit 120 is connected to the main control circuit 10 to realize the power supply control of the entire book recognition and sound generating device. In a specific embodiment, the power switch circuit 120 is, for example, a SK23D07 toggle switch. The SK23D07 toggle switch is connected to the DACPO interface of the main control chip U1.

[0046] like Figure 2As shown, the book recognition and sound generating device further includes a key circuit 130, which is connected to the main control circuit 10 for interacting with the book recognition and sound generating device. In a specific implementation, the key circuit 130 is provided with 12 keys, 10 of which are voice keys, one recording and playback key, and one recording key. Figure 7 As shown in FIG. 1 , the figure shows a specific implementation circuit of a specific key circuit 130. Correspondingly, reference Figure 1 As shown, the case circuit 130 includes 12 buttons, the ten first buttons 1301 on the top of the figure are the voice buttons, and the two second buttons 1302 on the bottom are the recording and playback buttons and the recording buttons from left to right.

[0047] like Figure 2 As shown, the main control circuit 10 is also electrically connected to a sound circuit 140, and the sound circuit 140 is used to emit sounds associated with the content of the corresponding external book. The sound circuit 140 is, for example, a speaker.

[0048] In a specific embodiment, the main control circuit 10, storage circuit 80, recording circuit 90, language switching circuit 100, power circuit 110, power switch circuit 120, key circuit 130, and sound circuit 140 are all arranged on the first circuit board 60. The first circuit board 60 is arranged in the housing 40, and the corresponding keys are exposed at the housing 40 for easy pressing.

[0049] Very important, such as Figure 2 As shown, the book recognition and sound-generating device of the present solution includes a magnetic recognition circuit 20, and the magnetic recognition circuit 20 is electrically connected to the main control circuit 10. Specifically, the magnetic recognition circuit 20 is located at the placement area 301, and is used for magnetic induction with the book when the book is placed in the placement area 301 so as to facilitate the main control circuit 10 to recognize the book. That is, the magnetic recognition circuit 20 is used to magnetically sense the book placed in the placement area 301 and transmit the signal to the main control circuit 10, and the main control circuit 10 performs various playback operations. Of course, how to realize the playback operation is not the core of the present solution, and it can be realized by using existing technology. It is very important that the magnetic induction recognition is performed by the magnetic recognition circuit 20 in the present solution, and then the data recognition of the book is realized, which solves the problem of the drawbacks brought by the traditional image-based recognition. It should be understood that the corresponding position of the book has a magnetic part; when the book is placed on the placement area 301, the magnetic part on the book will sense the corresponding magnetic identification circuit 20, so that the magnetic identification circuit 20 transmits the sensing information to the main control circuit 10, and the main control circuit 10 determines the content of the book based on the sensed magnetic sensing position on the book.

[0050] In detail, in one embodiment, the magnetic recognition circuit 20 is disposed on the second circuit board 70. The second circuit board 70 is disposed at the placement area 301 of the substrate 30. That is, in this embodiment, the circuit structure of the entire book recognition and sound-generating device is divided into two parts, one is the magnetic recognition circuit 20 part, and the other is other circuits. Such a design facilitates the partitioning of the circuit structure and facilitates the execution of magnetic sensing and control operations. Figure 1 As shown, the first circuit board 60 is arranged in the control area 302, and the second circuit board 70 is arranged in the placement area 301, that is, distributed on the left and right as shown in the figure.

[0051] In a preferred embodiment, the second circuit board 70 is a flexible circuit board and is located inside the placement area 301 of the substrate 30. In view of the thin and light design of the flexible circuit board, when the second circuit board 70 is arranged inside the placement area 301, the thickness of the entire substrate 30 will not be significantly increased, thereby ensuring that the substrate 30 maintains a thin and light design, saving materials and reducing costs. Of course, the first circuit board 60 can adopt a traditional hard PCB circuit board, which is convenient for the setting of various circuit structures and buttons, and the first circuit board 60 is arranged in the housing 40, which will not affect the overall size.

[0052] See also Figure 8 , the magnetic identification circuit 20 is configured to have a first magnetic identification unit 201 and a second magnetic identification unit 202; the first magnetic identification unit 201 is used to sense the first magnetic induction electric signal of the book and feed it back to the main control circuit 10 so that the main control circuit 10 starts the second magnetic identification unit 202 to sense the book according to the first magnetic induction electric signal to obtain the second magnetic induction electric signal. That is, in this embodiment, two magnetic inductions can be achieved through the magnetic identification circuit 20, the first is used to sense whether the book exists, and the second is used to sense the corresponding content of the book. It is very important that in this solution, the effectiveness of the identification is guaranteed by the combination of the first magnetic identification unit 201 and the second magnetic identification unit 202. That is, it is ensured that the book is identified only after the first magnetic identification unit 201 determines that there is a book; and the second magnetic identification unit 202 is not powered on all the time for identification. Such a structure can save power. It should be noted that the first magnetic attraction recognition unit 201 and the second magnetic attraction recognition unit 202 of this solution are intended to achieve magnetic induction and then obtain the first magnetic induction electric signal and the second magnetic induction electric signal to transmit to the main control circuit 10, and the main control circuit 10 controls the second magnetic attraction recognition unit 202 to perform power-on recognition according to the first magnetic induction electric signal, and how the main control circuit 10 determines the content of the book according to the second magnetic induction electric signal is realized by using existing technology. The core of this embodiment is to provide such a structure to achieve induction. Therefore, it cannot be considered that this application is based on the method and thus determines that this structure does not belong to the object of utility model protection.

[0053] Specifically, the first magnetic identification unit 201 includes a first electromagnetic inductor, which is electrically connected to the main control circuit 10. The second magnetic identification unit 202 includes at least one second electromagnetic inductor, which is electrically connected to the main control circuit 10. That is, induction is achieved by electromagnetic inductors. In particular, the corresponding first electromagnetic inductor and second electromagnetic inductor can be implemented using magnetrons. In detail, in a specific embodiment, the second magnetic identification unit 202 includes four second electromagnetic inductors, and the four electromagnetic inductors are electrically connected to the main control circuit 10 respectively.

[0054] Specific as Fig. 9 As shown, in a specific embodiment, a specific circuit structure diagram of a magnetic identification circuit 20 is proposed. The magnetic identification circuit 20 is connected to the corresponding main control chip U1 to realize the transmission of the identification signal. In this embodiment, the identification of the magnetic identification circuit 20 adopts the form of a magnetron to realize magnetic induction. In detail, the first magnetic attraction identification part 201 includes a magnetron U3, and the second magnetic attraction identification part 202 includes four magnetrons, namely magnetron U4, magnetron U5, magnetron U6 and magnetron U7. The corresponding magnetron U3, magnetron U4, magnetron U5, magnetron U6 and magnetron U7 are electrically connected to the VDDIO interface of the main control chip U1. For details, the specific circuit structure of the magnetic identification circuit 20 and the connection relationship with the main control chip U1 refer to Figure 3 and Fig. 9 shown.

[0055] It should be understood that the magnetrons U3, U4, U5, U6 and U7 are respectively arranged at different positions of the second circuit board 70. Different magnetrons are arranged in isolation from each other to avoid mutual influence. Fig.10 As shown, in a specific embodiment, magnetron U4, magnetron U5, magnetron U3, magnetron U6 and magnetron U7 are respectively arranged from top to bottom. Five magnetrons are arranged along a straight line. Among them, the four magnetrons of magnetron U4, magnetron U5, magnetron U6 and magnetron U7 can define each book according to different arrangements to achieve identification. For example, when only U4 senses the second magnetic induction signal, it is judged as the first book, and when U4 and U5 simultaneously sense the second magnetic induction signal, it is judged as the second book. By analogy, it can be identified according to different settings, such as four magnetrons forming a binary method can identify 16 books. In addition, it should be noted that the number of magnetrons of the second magnetic identification unit 202 can be selected according to different situations, such as three, five, six, or even more. It should be noted that the corresponding positions of the books are also provided with corresponding magnetic parts according to the definitions of different books, such as a magnet is provided at the position corresponding to U4.

[0056] In one example, when a book is placed in the placement area 301, U3 detects the magnet at the corresponding position of the book, and U3 outputs a low level. After receiving the low level, the USBDP of U1 outputs a low level for 3 seconds to power the four magnetrons of the second magnetic identification unit 202, and outputs a low level after 3 seconds to cut off the power. After the four magnetrons of the second magnetic identification unit 202 are powered, they sense whether there is a corresponding magnet on the book within 3 seconds. When there is a magnet on the book, they output a low level. U1 identifies the corresponding book based on the status of PA14PA0PA2PA3 within 3 seconds. After 3 seconds, the USBDP of U1 outputs a low level, and U4, U5, U6, and U7 are powered off, and U1 no longer reads the status of the four magnetrons of the second magnetic identification unit 202. However, as long as PA1 continues to receive a low level, this identification will be saved; until the book is taken out and the magnetron U3 outputs a high level, the identification will be cleared until PA1 becomes a high level. When the book is put in again, the magnetron U3 detects the corresponding magnetic induction and outputs a low level again, and a new round of book identification is carried out. Of course, in this example, the output time interval is set to 3 seconds, which is just an example and is not limited to this in practice and can be preset. Therefore, the parameter of 3 seconds should not limit the protection scope of this solution.

[0057] This solution can be used to identify through the corresponding magnetron, without the need for traditional image recognition and without the need for software, and can be implemented directly through circuit hardware.

[0058] In another embodiment, in order to realize the positioning of the book so that it is easy to be identified, the control area 302 has a shell 40 that is raised upward from the surface of the substrate 30, and the shell 40 and the magnetic identification circuit 20 are arranged on both sides so that when the book is placed in the placement area 301 and is in contact with the shell 40 in a horizontal positioning, the corresponding magnetic part of the book is directly opposite to the magnetic identification circuit 20. Specifically, in a specific embodiment, the left side of the shell 40 is arranged in a straight line. When the book is placed in the placement area 301, the edge of the book can contact and remain parallel to the left side of the shell 40. At this time, the straight line where the corresponding magnetic part on the book is located is convenient for the second magnetic identification part on the second circuit board 70 to coincide with the straight line where the magnetic sensor is located, so that the horizontal positioning is realized, which is convenient for the book to be quickly positioned after being placed. When performing alignment, the corresponding identification position can be found by moving the book back and forth in contact with the left side of the shell 40. Further, correspondingly, for better alignment, the placement area 301 has a second positioning structure 50 for realizing the longitudinal positioning of the book. The second positioning structure 50 is, for example, a protruding structure, and a corresponding groove is provided in the book. When the protruding structure falls into the groove, the longitudinal positioning is achieved.

[0059] Of course, it should be clear that there are many ways to locate. Fig.10As shown, a right-angle corner structure 401 is provided on the upper side of the housing 40. When positioning is required, the book can be directly placed in contact with the two side edges of the right-angle corner structure to achieve positioning.

[0060] As in another embodiment, Fig.11 As shown, a first scale line 402 is provided at a corresponding position of the housing 40, and a second scale line 11 is provided on the corresponding book 2, which can be achieved when the book is placed in the placement area and the first scale line 402 and the second scale line 11 are aligned.

[0061] The above are just a few illustrations. In fact, it is not limited to this, and any suitable structure for realizing book positioning is all right.

[0062] In addition, the utility model also proposes a book set, comprising at least one book 1 and any of the above-mentioned book recognition and sound-generating devices; each of the books has a magnetic piece at a corresponding position, and when the book is placed on the book recognition and sound-generating device, it can be recognized by the book recognition and sound-generating device and the corresponding content can be played.

[0063] In summary, the book recognition and sound-generating device and book set of the utility model realize contactless book recognition through magnetic induction, which solves the problem that traditional image recognition has high requirements on image quality and cannot be difficult to recognize due to graffiti.

[0064] According to the disclosure and teaching of the above description, the technical personnel in the field to which the utility model belongs can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. A book recognition and sound generating device, comprising a main control circuit (10), characterized in that: The main control circuit (10) is electrically connected to a magnetic identification circuit (20), and the magnetic identification circuit (20) is used to induce a magnetic member provided at the book place to generate an electrical signal and transmit it to the main control circuit (10); The magnetic recognition circuit (20) is configured to have a first magnetic recognition unit (201) and a second magnetic recognition unit (202); the first magnetic recognition unit (201) is used to sense a first magnetic induction electric signal of a book and feed it back to the main control circuit (10) so that the main control circuit (10) activates the second magnetic recognition unit (202) to sense the book and obtain a second magnetic induction electric signal according to the first magnetic induction electric signal.

2. A book recognition and sound generating device as claimed in claim 1, characterized in that: The first magnetic identification unit (201) comprises a first electromagnetic sensor, and the first electromagnetic sensor is electrically connected to the main control circuit (10).

3. A book recognition and sound generating device as claimed in claim 1, characterized in that: The second magnetic identification part (202) comprises at least one second electromagnetic sensor, and the at least one second electromagnetic sensor is electrically connected to the main control circuit (10).

4. A book recognition sound generating device as claimed in claim 3, characterized in that: The second magnetic identification part (202) includes four second electromagnetic sensors, and the four electromagnetic sensors are electrically connected to the main control circuit (10) respectively.

5. A book recognition and sound generating device as claimed in claim 1, characterized in that: The main control circuit (10) is also electrically connected to a sound circuit (140), and the sound circuit (140) is used to emit sounds associated with the content of the corresponding external book.

6. A book recognition and sound generating device as claimed in claim 1, characterized in that: The book recognition and sound-generating device also includes a substrate (30), wherein the substrate (30) has a placement area (301) for placing books and a control area (302); The magnetic identification circuit (20) is located at the placement area (301) and is used for magnetic induction with a book when the book is placed in the placement area (301) so as to facilitate the main control circuit (10) to identify the book.

7. A book recognition and sound generating device as claimed in claim 6, characterized in that: The control area (302) has a shell (40) protruding upward from the surface of the substrate (30), and the shell (40) and the magnetic identification circuit (20) are arranged on both sides so that when a book is placed in the placement area (301) and is laterally positioned and contacted with the shell (40), the corresponding magnetic part of the book is directly opposite to the magnetic identification circuit (20).

8. A book recognition and sound generating device as claimed in claim 6, characterized in that: The main control circuit (10) is arranged on a first circuit board (60), and the magnetic identification circuit (20) is arranged on a second circuit board (70); the second circuit board (70) is a flexible circuit board and is located inside a placement area (301) of the substrate (30).

9. A book set, comprising at least one book, characterized in that: It also includes a book recognition and sound-generating device as described in any one of claims 1 to 8; each of the books has a magnetic piece at a corresponding position, and when the book is placed on the book recognition and sound-generating device, it can be recognized by the book recognition and sound-generating device and play the corresponding content.

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