Intelligent electronic accordion

Abstract

The utility model discloses a traditional accordion appearance is reserved, the principle and timbre of bellows airflow push sound spring sound production are retained, adopt multiple intelligent MCU chip, electronic technology, motor drag technology, bluetooth wireless communication technology and man-machine interaction technology of color touch display screen, overturningly cancel the pure mechanical bass mechanism and simplify the complicated mechanical transmission control, the mechanical executing mechanism of left and right hand sound changer, introduce a large number of intelligent control, fully embody the intelligentization of the utility model, electronization, motorization, light weight, and it is easier to give the traditional accordion's free bass, chin sound changer, left and right hand keyboard A, B, C system and various functions in one, can communicate with external intelligent special equipment or smart mobile phone, realizes the automatic performance of each part of the accordion, automatic ensemble, performance music data upload multiple intelligent application, plays the role of helping study, helping teach, helping the disabled, and is also a reform to the traditional accordion.

Description

Technical Field

[0001] This utility model belongs to the field of musical instruments, and relates to accordions, especially an intelligent electronic accordion. Technical Background

[0002] The accordion was introduced to China in the early 20th century. As a foreign musical instrument, it has undergone nearly a century of development and has become a well-known and widely popular instrument in China. To date, the variety of accordions has continuously increased, and the technology has also advanced. Product types include traditional accordions and electronic accordions, with keyboard accordions, bayan accordions, and more. With social development, the improvement of people's living standards, and the increasing pursuit of cultural life, the accordion has gained even more popularity. With its bright sound and wide range, the accordion is suitable for solo performances and accompaniment, making it an excellent instrument for both professional music players and those seeking leisure and entertainment.

[0003] For many years, the structure of traditional accordions has not changed much. The right-hand keyboard, right-hand pitch changer, left-hand bass mechanism, and left-hand pitch changer all use a purely mechanical structure. They are heavy, complex to maintain and repair, and require professional technicians to complete. The overall chassis structure has high requirements for strength to ensure that the mechanical movements of each part are in place without air leakage, noise, or jamming. Therefore, it is difficult to reduce the weight of the cabinet and maintainability.

[0004] In recent years, electronic accordions have emerged. Similar to electronic keyboards, they are basically the same in appearance as traditional accordions. Their sound production principle is the same as that of electro-acoustic instruments, and they belong to the category of electro-acoustic instruments. Although electronic accordions have a variety of accordion tone libraries, their timbre is quite different from the musical effect of traditional accordion reed vibration. They also lack the musical effects produced by playing with bellows shaking or explosive bellows pulling.

[0005] The intelligent electronic accordion uses MCU intelligent chips and electronic technology, as well as motor drive technology. It eliminates the various complex mechanical structures inside the traditional accordion, while retaining the sound production principle of the traditional reeds. This allows the player to experience both the beauty of the sound of the traditional accordion and the lightweight, powerful, easy-to-maintain, and more intelligent applications of the intelligent electronic accordion. Utility Model Content

[0006] This invention retains the traditional accordion's appearance, the principle of sound production through bellows airflow driving the reeds, and its timbre. It employs multiple intelligent MCU chips, electronic technology, motor drive technology, and Bluetooth wireless communication technology. It revolutionaryly eliminates the purely mechanical bass mechanism and simplifies the complex mechanical transmission control mechanism for the left and right hand tone changers. It introduces numerous intelligent controls, embodying the invention's intelligence, electronic nature, electric power, and lightweight design. It more easily integrates various functions of the traditional accordion, such as free bass, jaw tone changer, and A, B, and C systems for both hands. It can communicate with external intelligent devices or smartphones, enabling automatic playing of various parts of the accordion, automatic ensemble playing, and uploading of performance music data—multiple intelligent applications. It serves as an aid to learning, teaching, and disability, and represents a transformation of the traditional accordion.

[0007] The main objectives of this utility model include the following aspects:

[0008] It retains the traditional sound-producing principle of reeds, that is, sound is produced by the vibration of reeds, thus showcasing the perfect accordion tone.

[0009] Employing MCU intelligent chips, electronic control technology, and motor drive technology, the system detects the bass buttons on the left hand and the traditional keyboard or bayan buttons on the right hand, identifies the performer's playing actions, and controls the opening and closing of the airflow holes 25 of the left and right reeds of the accordion through electronic circuits and motor drive, achieving the same playing experience as a traditional accordion.

[0010] Employing MCU intelligent chips, electronic control technology, and motor drive technology, the device detects the left-hand tone changer button 11, right-hand tone changer button 8, right-hand wrist tone changer button 9, and jaw tone changer button 10, recognizing the performer's tone-changing actions. Through electronic circuits and motor drive, it controls the blocking and opening of the reed tone holes in different registers of the left and right hands, achieving different combinations of open reed airflow holes 25 in different registers. This allows for different tone changes, replacing the traditional mechanical transmission structure, improving reliability during use, and reducing weight.

[0011] Using a color touch screen 30 or other type of display, the accordion displays its current working status, left-hand tone, right-hand tone, bass note name of the left-hand bass keyboard button 7, corresponding note name of the right-hand keyboard buttons 5 and 6 or bayan buttons 12 and 13, current key, working mode, battery level, and other information. This solves the problems of the player not being able to see the left-hand bass buttons and not knowing the tone setting, and the player having to tilt their head to see the tone position of the tone changer. It also makes it easy to see the note name corresponding to the pressed button or key, as well as the accordion's current working status and other information.

[0012] By employing intelligent electronic control technology and motor drive technology, the weight of accordion components is reduced. In particular, the traditional complex bass mechanism is replaced, which frees up resonance space for the airflow of the left-hand reeds, giving the performer a more relaxed and beautiful accordion tone experience.

[0013] The MCU intelligent chip enables transposition playing for beginners unfamiliar with the semitone keys, as well as temporary key changes during improvisation by the performer. It facilitates full-function switching between the traditional bass mode of the left-hand bass keyboard 7 and the A-system free bass mode, B-system free bass mode, and C-system free bass mode. It also allows for easy switching between the A-system, B-system, and C-system arrangements of the white whole-tone buttons 12 and the black semitone buttons 13 on the right-hand bayan accordion.

[0014] Equipped with Bluetooth wireless communication, it enables communication with smartphones or external smart devices, realizing music data input and output, software updates and upgrades, and intelligent function expansion digital interfaces;

[0015] The technical solution for the intelligent electronic accordion is as follows:

[0016] It retains the reed box components 40 and 49, bellows 3, and the traditional keyboard accordion and bayan accordion appearance.

[0017] The long metal connecting rod 15 between the right-hand keyboard keys 5 and 6 or bayan keys 12 and 13 and the reed airflow pressure plate 28 is removed. The complex left-hand mechanical bass mechanism 18 is also removed. Electronic control and motor drive technology are used to convert the rotational energy of the motor into the lifting and pressing action of the reed airflow pressure plate 28. (See attached image) Figure 11 , 12 When the MCU and drive circuit on the motor control circuit board 38 of the reed airflow hole pressure plate drive the DC motor or stepper motor 19 to rotate counterclockwise, it will cause the motor to lift the connecting rod 27 and the reed airflow hole pressure plate 28, opening the reed airflow hole 25. The lifting height is constrained by the limit cover plate 54 pressed down by the lifting height of the reed airflow hole pressure plate. See attached Figure 12 When the MCU and drive circuit on the reed airflow hole pressure plate motor control circuit board 38 drive the DC motor or stepper motor 19 to rotate clockwise, it will cause the motor to press down the reed airflow hole pressure plate connecting rod 27 and the reed airflow hole pressure plate 28, and the reed airflow hole 25 will be closed.

[0018] The traditional mechanical voice changer components 14 and 16 for the right hand and 17 for the left hand are removed. Electronic control and motor-driven technology are used to convert the rotational energy of the motor into the opening and closing motion of the tone-changing sliding baffles 23 within the tone holes of the left and right voice changers. (See attached image) Figure 6The schematic diagram of the left and right voice changer's voice-changing assembly shows that it consists of a DC motor or stepper motor 19, a voice changer lever 20, a voice changer control circuit board 21, and a voice changer motor bracket 22. (See attached diagram) Figure 7 As shown, the tone conversion sliding baffle 23 inside the tone hole plate is installed in a slidable groove between the tone hole plate 24 and the tone conversion sliding baffle cover plate 56. (See attached...) Figure 8 As shown, the head of the tone changer lever 20 is inserted into the tone conversion sliding baffle tone changer lever actuation slot 58 inside the tone plate. When the MCU drive circuit on the tone changer control circuit board 21 drives the DC motor or stepper motor 19 to rotate counterclockwise, the DC motor or stepper motor 19 will drive the tone changer lever 20 to rotate counterclockwise. This causes the tone conversion sliding baffle 23 inside the tone plate to move to the right through the tone conversion sliding baffle tone changer lever actuation slot 58, so that the airflow opening 57 of the tone conversion sliding baffle inside the tone plate is completely misaligned with the position of the reed airflow hole 25 on the tone plate 24, that is, all the reed airflow holes 25 of this row of reeds are closed. (See attached diagram) Figure 9 As shown, when the MCU drive circuit on the tone changer control circuit board 21 drives the DC motor or stepper motor 19 to rotate clockwise, the DC motor or stepper motor 19 will drive the tone changer lever 20 to rotate clockwise. This causes the tone changer lever to move the tone changer sliding baffle 23 inside the tone plate to the left through the tone changer lever's moving slot 58. This makes the airflow opening 57 of the tone changer sliding baffle inside the tone plate completely coincide with the position of the reed airflow hole 25 on the tone plate 24, thus opening all the reed airflow holes 25 in that row. Each row of reeds has a different tone range, and different reed combinations create different tone-changing effects.

[0019] The innovation of this utility model lies in the use of multiple MCU smart chips to construct the control system of the smart accordion (such as...). Figure 13 The system includes a main control MCU, an EEPROM data storage circuit, a color touch screen, a Bluetooth communication circuit, a right-hand keyboard detection circuit, a right-hand voice changer button detection circuit, a jaw voice changer button detection circuit, MCU right-hand reed airflow damper cover driver 1-n, MCU right-hand voice changer vent baffle driver 1-n, a left-hand main control MCU, a left-hand voice changer button detection circuit, a left-hand bass button detection circuit, MCU left-hand reed airflow damper cover control 1-n, MCU left-hand voice changer vent baffle driver 1-n, left and right-hand power supplies, a communication bridge circuit, a power management circuit, a battery protection and charge / discharge management circuit, a battery, and a Type-C charging interface.

[0020] The innovation of this utility model lies in the use of motor drive technology, a micro DC motor or stepper motor 19, a tone changer lever 20, a tone changer control circuit board 21, and a tone changer motor assembly bracket 22, which realizes the switching of left and right tone timbres by replacing the traditional purely mechanical tone changer structure of the accordion. It has the purpose of simple structure, light weight, and intelligent control.

[0021] The innovation of this utility model lies in the use of motor drive technology, a micro DC motor or stepper motor 19, a motor-connecting rod 27 for the reed airflow hole pressure plate, a reed airflow hole pressure plate 28, a left and right reed airflow hole pressure plate motor control circuit board 38, and a reed airflow hole pressure plate motor bracket 26. This achieves the goal of replacing the traditional accordion's purely mechanical structure for opening and closing the left and right reed airflow hole pressure plates, resulting in a simple structure, light weight, and intelligent control.

[0022] The innovation of this invention lies in the use of an MCU and Bluetooth communication chip to achieve communication with external smart devices or smartphones, enabling the automatic playing function of this smart electronic accordion. Users only need to pull the bellows 3 without pressing the right-hand black and white keyboard 5 and 6 or the left-hand bass keyboard 7 to achieve automatic playing according to the sheet music of the smart device. This provides users with an extremely intelligent and fast way to practice bellows dynamics and various bellows techniques.

[0023] The innovation of this invention lies in the use of an MCU and Bluetooth communication chip to achieve communication with external smart devices or smartphones, enabling the automatic left-hand playing function of this smart electronic accordion. Users only need to pull the bellows 3 and press the black and white keys 5 and 6 on the right hand, without pressing the bass key 7 on the left hand, to achieve automatic playing of the left-hand part of the score on the smart device. This provides users with an extremely intelligent and fast way to practice bellows dynamics, various bellows techniques, and right-hand melodies.

[0024] The innovation of this invention lies in the use of an MCU and Bluetooth communication chip to achieve communication with external smart devices or smartphones, enabling the automatic right-hand playing function of this smart electronic accordion. Users only need to pull the bellows 3 and press the left-hand bass keyboard 7, without needing to press the right-hand black and white keyboards 5 and 6, to achieve automatic playing of the right-hand part of the score on the smart device. This solves the problem of the monotony of practicing only the left-hand bass accompaniment and the coordination between the left and right hands. This provides users with an extremely intelligent and fast way to practice bellows dynamics, various bellows techniques, and left-hand bass.

[0025] The innovation of this utility model is that by utilizing the intelligent control methods of

[0022] ,

[0023] , and

[0024] , it not only realizes the intelligent application of assisting learning and teaching, but also provides a feasible way for accordion enthusiasts with finger or arm disabilities to learn and play the accordion, and also reflects the intelligent application of assisting the disabled.

[0026] The innovation of this utility model is the use of a color touch screen 30, which displays the tone status of the right-hand tone changer 8 and the left-hand tone changer 11. During performance, it displays the left-hand bass chord names and the right-hand black and white key note names, and realizes transposition control and function settings through touch function.

[0027] The innovation of this utility model is that it uses an MCU and Bluetooth communication chip to achieve communication with external smart devices or smartphones. It can output the score data of the melody played by the performer to the external device, realize the generation of the score of the melody, and compare it with the score in the external smart device to give the error or evaluation of the performance.

[0028] The innovation of this utility model is the use of multiple MCUs, which communicate with each other via a bus. This not only realizes intelligent edge control, but also allows multiple MCUs to undertake their own control tasks, reducing the workload of the main control MCU and improving the response speed of the MCU. At the same time, it also greatly reduces wiring and lowers production and maintenance costs. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the appearance of a traditional keyboard accordion.

[0030] Figure 2 This is a schematic diagram of the appearance of a traditional bayan accordion.

[0031] Figure 3 This is a schematic diagram of the mechanical transmission of the right-hand tone changer in a traditional accordion.

[0032] Figure 4 This is a schematic diagram of the mechanical transmission of the left-hand pitch changer in a traditional accordion.

[0033] Figure 5 This is a schematic diagram of the left-hand bass mechanism of a traditional accordion.

[0034] Figure 6 This is a schematic diagram of the voice changer component of this utility model.

[0035] Figure 7 This is a schematic diagram of the voice changer of this utility model.

[0036] Figure 8 This is a schematic diagram illustrating the principle of the voice changer's voice-changing and shut-off operation.

[0037] Figure 9 This is a schematic diagram illustrating the principle of how the voice changer of this utility model performs voice changing.

[0038] Figure 10 This is a schematic diagram of the composition of the sound reed airflow hole pressure plate control assembly of this utility model.

[0039] Figure 11This is a schematic diagram illustrating the lifting control principle of the pressure plate of the airflow hole of the sound reed in this utility model.

[0040] Figure 12 This is a schematic diagram illustrating the pressure control principle of the airflow hole pressure plate of the sound reed in this utility model.

[0041] Figure 13 This is a block diagram illustrating the intelligent electronic control principle of this utility model.

[0042] Figure 14 This is a schematic diagram of the front upper appearance of the intelligent accordion according to an embodiment of this utility model.

[0043] Figure 15 This is a schematic diagram of the rear lower part of the intelligent accordion according to an embodiment of this utility model.

[0044] Figure 16 This is a schematic diagram of the internal keyboard of the right-hand part of the intelligent accordion according to an embodiment of the present invention.

[0045] Figure 17 This is a schematic diagram of the inside of the right-hand section of the cover of the intelligent accordion, according to an embodiment of this utility model.

[0046] Figure 18 This is a schematic diagram of the internal structure of the right-hand part of the intelligent accordion according to an embodiment of this utility model.

[0047] Figure 19 This is a schematic diagram of the left and right power supply and communication bellows bridging circuit of this utility model.

[0048] Figure 20 This is a schematic diagram of the interior of the left-hand part of the piano lid of this utility model.

[0049] Figure 21 This is a schematic diagram of the internal structure of the left-hand part of the instrument body of this utility model.

[0050] Figure 22 This is a schematic diagram of the installation of the main control board inside the left-hand part of the piano cover of this utility model.

[0051] All labels in the attached images are: 1. Right-hand body, 2. Left-hand body, 3. Bellows, 4. Right-hand lid, 5. Right-hand white whole-tone keyboard, 6. Right-hand black semi-tone keyboard, 7. Left-hand bass keyboard, 8. Right-hand pitch changer button, 9. Right-hand wrist pitch changer button, 10. Jaw pitch changer button, 11. Left-hand pitch changer button, 12. Bayan right-hand white whole-tone button, 13. Bayan black semi-tone button, 14. Traditional accordion right-hand pitch changer metal mechanical conversion slide, 15. Traditional accordion right-hand metal keyboard connecting rod, 16. Traditional accordion right-hand pitch changer metal transmission. 17. Connecting rod, 18. Metal transmission assembly of traditional accordion left-hand tone changer, 19. Metal assembly of traditional accordion left-hand bass mechanism, 20. DC motor or stepper motor, 21. Tone changer lever, 22. Tone changer control circuit board, 23. Tone conversion sliding baffle inside the tone hole plate, 24. Tone hole plate, 25. Reed airflow hole, 26. Reed airflow hole pressure plate motor bracket, 27. Connecting rod between motor and reed airflow hole pressure plate, 28. Reed airflow hole pressure plate, 29. Left-hand piano cover, 30. Color touch screen, 31. Power switch, 32. Type-C charging interface, 33. Lower jaw voice changer detection circuit board, 34. Power management circuit, battery protection and charge / discharge management circuit assembly, 35. Main control circuit board, 36. Battery, 37. Right-hand voice changer detection and color touch screen display circuit board, 38. Reed airflow hole pressure plate motor control circuit board, 39. Right-hand reed leaf spring, 40. Right-hand reed box, 41. Right-hand voice changer actuation component, 42. Right-hand voice hole plate assembly, 43. Right-hand power supply and communication bridge elastic contact head, 44. Bellows power supply and communication bridge connector, 45. Left-hand power supply and communication bridge elastic contact head. 46 Left-hand main control circuit board, 47 Flexible ribbon cable, 48 Left-hand tone changer execution tone changing component, 49 Left-hand reed box, 50 Left-hand reed leaflet, 51 Left-hand tone hole plate assembly, 52 Micro switch, 53 Right-hand reed airflow hole pressure plate motor control assembly, 54 Reed airflow hole pressure plate lifting height pressing limit cover, 55 Motor wiring adapter board, 56 Tone conversion sliding baffle cover, 57 Tone conversion sliding baffle airflow opening inside tone hole plate, 58 Tone conversion sliding baffle tone changer lever toggle slot inside tone hole plate, 59 Left-hand reed airflow hole pressure plate motor control assembly. Detailed Implementation

[0052] The following embodiments are specific implementations of this utility model, and examples of implementations of this utility model are attached. Figure 6 - Appendix Figure 22 The following is a further detailed description of the embodiments:

[0053] The intelligent electronic accordion consists of a right-hand section, a bellows section, a left-hand section, and an intelligent control system.

[0054] The right-hand section comprises the right-hand body 1, right-hand lid 4, right-hand white full-tone keyboard 5, right-hand black semi-tone keyboard 6, right-hand pitch changer button 8, right-hand wrist pitch changer button 9, right-hand wrist pitch changer button microswitch 52, jaw pitch changer button 10, right-hand pitch changer execution component 41, right-hand reed airflow hole pressure plate motor control component 53, right-hand tone hole plate component 42, color touch screen 30, main control circuit board 35, microswitch under the black and white keyboard button 52, jaw pitch changer detection circuit board 33, jaw pitch changer button microswitch 52, power management circuit, battery protection and charge / discharge management circuit component 34, battery 36, right-hand power and communication bridge elastic contact head 43, power switch 31, Type-C charging interface 32, right-hand pitch changer detection and color touch screen circuit board 37, right-hand reed reed 39, and right-hand reed box 40.

[0055] The right-hand voice changer executes the voice changing component 41 (see appendix). Figure 6 It consists of a DC motor or stepper motor 19, a voice changer lever 20, a voice changer control circuit board 21, and a voice changer motor bracket 22.

[0056] Right-hand reed airflow hole pressure plate control assembly 53 (see attachment) Figure 10 It consists of a DC motor or stepper motor 19, a motor bracket 26 for the reed airflow hole pressure plate, a connecting rod 27 for the motor and the reed airflow hole pressure plate 27, a reed airflow hole pressure plate 28, a limit cover 54 for the lifting height of the reed airflow hole pressure plate, a motor wiring adapter plate 55, and a motor control circuit board 38 for the reed airflow hole pressure plate.

[0057] The right-hand tone plate assembly consists of tone plate 24, tone conversion sliding baffle 23 inside the tone plate, airflow hole 25 for the reed 25, cover plate 56 for tone conversion sliding baffle, airflow opening 57 for tone conversion sliding baffle inside the tone plate, and a lever actuation slot 58 for tone conversion sliding baffle inside the tone plate.

[0058] The power management circuit, battery protection and charge / discharge management circuit assembly 34 consists of a power management circuit and a battery protection and charge / discharge management circuit.

[0059] The bellows section consists of bellows 3, left and right bellows power supply and communication bridge connectors 44, and flexible ribbon cable 47, as shown in the appendix. Figure 19 .

[0060] The left-hand section comprises the left-hand body 2, the left-hand cover 29, the left-hand bass keyboard 7, the left-hand pitch changer button 11, the micro switch 52 under the left-hand pitch changer button, the left-hand reed airflow hole pressure plate control assembly 59, the left-hand tone hole plate assembly 42, the left-hand power supply and communication bridge elastic contact head 45, the left-hand main control circuit board 46, the left-hand bass keyboard pressing micro switch 52, the left-hand pitch changer execution pitch change assembly 48, the left-hand reed box 49, the left-hand reed leaf 50, and the left-hand tone hole plate assembly 51.

[0061] The left-hand voice changer's voice-changing component 48 consists of a DC motor or stepper motor 19, a voice changer lever 20, a voice changer control circuit board 21, and a voice changer motor bracket 22.

[0062] The left-hand reed airflow hole pressure plate control assembly 59 consists of a DC motor or stepper motor 19, a reed airflow hole pressure plate motor bracket 26, a motor-reed airflow hole pressure plate connecting rod 27, a reed airflow hole pressure plate 28, a reed airflow hole pressure plate lifting height pressing limit cover 54, a motor wiring adapter plate 55, and a reed airflow hole pressure plate motor control circuit board 38.

[0063] The left-hand tone plate assembly consists of tone plate 51, tone conversion sliding baffle 23 inside the tone plate, airflow hole 25 for the reed, cover plate 56 for tone conversion sliding baffle, airflow opening 57 for tone conversion sliding baffle inside the tone plate, and a lever actuation slot 58 for tone conversion sliding baffle inside the tone plate.

[0064] Working principle description:

[0065] Initialization: After the power switch is turned on, the right main control circuit board 35 starts working and initializes the intelligent electronic accordion system. It reads the configuration data in the EEPROM data storage circuit and sends initialization commands to all MCUs and the color touch screen in the system. After initialization is completed, the system is in normal working condition.

[0066] Right-hand tone changer: When the player presses the right-hand tone changer button 8, the right-hand wrist tone changer button 9, or the jaw tone changer button 10, the main control MCU will open and close the tone conversion sliding baffle 23 in the right-hand tone plate 24 according to the corresponding tone. This is achieved by communicating with the MCU on the corresponding tone changer control circuit board 21 via the bus and issuing open and close commands. Upon receiving the command, the MCU on the tone changer control circuit board 21 controls the corresponding DC motor or stepper motor 19 to rotate in the desired direction, causing the tone changer lever 20 to move and open or close the tone conversion sliding baffle 23 in the tone plate. This achieves tone change and displays the current right-hand accordion tone on the color touch screen 30, while simultaneously storing the current tone state in the EEPROM data storage circuit.

[0067] Left-hand tone changer: When the player presses the left-hand tone changer button 11, the main control MCU will open and close the tone conversion sliding baffle 23 in the left-hand tone plate 51 corresponding to the corresponding tone. That is, it communicates with the MCU on the corresponding tone changer control circuit board 21 through the bus and sends an open or close command. After receiving the command, the MCU on the tone changer control circuit board 21 controls the corresponding DC motor or stepper motor 19 to rotate in the required direction, which drives the tone changer lever 20 to move the tone conversion sliding baffle 23 in the tone plate to open or close, thereby changing the tone. The current left-hand accordion tone is displayed on the color touch screen 30, and the current tone state is stored in the EEPROM data storage circuit.

[0068] Right-hand keyboard playing: When the player presses or lifts the right-hand white whole-tone keyboard 5 or the right-hand black semitone keyboard 6, the main control MCU will communicate with the corresponding MCU on the right-hand reed airflow hole pressure plate motor control circuit board 38 via the bus, and issue a command to lift or press down the reed airflow hole pressure plate 28. After receiving the command, the corresponding MCU on the right-hand reed airflow hole pressure plate motor control circuit board 38 controls the corresponding DC motor or stepper motor 19 to rotate in the required direction, driving the reed airflow hole pressure plate connecting rod 27 and the reed airflow hole pressure plate 28 to lift or press down. When the reed airflow hole pressure plate 28 is lifted, the airflow from the bellows will pass through the opened reed airflow hole 25 and the corresponding reed 39. The reed will vibrate and produce a sound of the corresponding pitch, and the name of the current pitch will be displayed on the color touch screen 30.

[0069] Left-hand bass keyboard playing: When the player presses or lifts the left-hand bass keyboard 7, the main control MCU will communicate with the corresponding MCU on the left-hand reed airflow hole pressure plate motor control circuit board 38 via the bus, and issue a command to lift or press down the reed airflow hole pressure plate 28. After receiving the command, the corresponding MCU on the left-hand reed airflow hole pressure plate motor control circuit board 38 controls the corresponding DC motor or stepper motor 19 to rotate in the required direction, driving the reed airflow hole pressure plate connecting rod 27 and the reed airflow hole pressure plate 28 to lift or press down. When the reed airflow hole pressure plate 28 is lifted, the airflow from the bellows will pass through the opened reed airflow hole 25 and the corresponding reed 50. The reed will vibrate and produce a sound of the corresponding pitch, and the name of the current pitch of the bass will be displayed on the color touch screen 30.

[0070] Right-hand intelligent playing: When the smart electronic accordion is set to right-hand intelligent playing mode or both hands are intelligently playing, the system activates the Bluetooth wireless communication circuit. After pairing with the smart electronic accordion using an external smart device or a dedicated APP on a smartphone, a communication connection is established. Data transmission for automatic right-hand playing is transmitted through the external smart device or the dedicated APP on the smartphone, controlling the right-hand part of the smart electronic accordion to automatically play the piece. At this time, the user must pull the bellows simultaneously to produce sound. Pressing the right-hand white whole-tone key 5 or the right-hand black semi-tone key 6 will have no effect.

[0071] Left-hand intelligent playing: When the smart electronic accordion is set to left-hand intelligent playing mode or both hands are intelligently playing, the system activates the Bluetooth wireless communication circuit. After pairing with the smart electronic accordion using an external smart device or a dedicated APP on a smartphone, a communication connection is established. Data transmission for automatic left-hand playing is transmitted through the external smart device or the dedicated APP on the smartphone, controlling the left-hand part of the smart electronic accordion to automatically play the piece. At this time, the user must pull the bellows simultaneously to produce sound; pressing the left-hand bass key 7 will have no effect.

[0072] Performance data upload: When the smart electronic accordion is set to upload data, the system activates the Bluetooth wireless communication circuit. After pairing with the smart electronic accordion using an external smart device or a dedicated APP on a smartphone, a communication connection is established. The pitch, duration, and timbre data of the player's left and right hands are uploaded to the external smart device or smartphone via the smart electronic accordion's Bluetooth communication circuit. After receiving the data, the external smart device or dedicated APP on the smartphone converts it into the corresponding sheet music, or compares it with existing sheet music to provide evaluation or identify error locations.

[0073] System settings: The color touch screen 30 allows users to configure the intelligent electronic accordion for transposition playing, intelligent right-hand playing, intelligent left-hand playing, simultaneous automatic left and right-hand playing, data uploading, and system upgrade functions.

[0074] System Upgrade: When the smart electronic accordion is set to the system upgrade function, the system activates the Bluetooth wireless communication circuit, and establishes a communication connection by pairing with an external smart device or a dedicated APP software on a smartphone, upgrading the software to a new version and expanding the functions and applications of the smart electronic accordion.

[0075] Power supply working principle: The power management circuit provides 3.3V and 5V regulated power to the MCU, electronic circuits, and motor of the intelligent electronic accordion. The battery protection and charge / discharge management circuit manages the battery charging (disconnecting the charging circuit after the battery is fully charged) and the discharge (disconnecting the battery power supply when the battery voltage is below 3V). Battery protection disconnects the battery power supply when the battery temperature is above 60℃ or below -20℃ or when a short circuit causes the current to be greater than 5A. The protection circuit will restore power supply when the battery operating environment returns to normal.

Claims

1. An intelligent electronic accordion, characterized in that: It consists of a right-hand body, a right-hand electronic keyboard, a right-hand pitch changer (41), a right-hand reed airflow hole pressure plate control assembly (53), a color touch screen (30), a Bluetooth communication module, a bellows, a left-hand body, a left-hand bass electronic keyboard, a left-hand pitch changer (48), a left-hand reed airflow hole pressure plate control assembly (59), a power supply assembly, and a battery.

2. The intelligent electronic accordion according to claim 1, characterized in that: The right-hand electronic keyboard and the left-hand bass electronic keyboard operate on the same principle; the right-hand white full-tone keyboard (5), the right-hand black semi-tone keyboard (6) or the right-hand white full-tone button (12), the right-hand black semi-tone button (13), the right-hand pitch changer button (8), the right-hand wrist pitch changer button (9), the jaw pitch changer button (10), the main control circuit board (35), the jaw pitch changer detection circuit board (33), the right-hand pitch changer detection and color touch screen display circuit board (37), and the circuit board installed on the main control circuit board (35) and the jaw pitch changer detection circuit board (33), the right-hand pitch changer detection and color touch screen display circuit board (37), and the circuit board installed on the main control circuit board (35) and the jaw pitch changer detection circuit board (33), the right-hand pitch changer detection and color touch screen display circuit board (37). The display circuit board (37) consists of micro switches (52) to detect the pressing action of the right-hand white full-tone keyboard (5), the right-hand black semitone keyboard (6), or the right-hand white full-tone button (12), the right-hand black semitone button (13), and the right-hand pitch changer button (8); the left-hand bass keyboard (7), the left-hand pitch changer button (11), and the left-hand main control circuit board (46) are composed of a smart MCU and micro switches (52) installed on the left-hand main control circuit board (46) to detect the pressing action of the left-hand bass keyboard (7) and the left-hand pitch changer button (11).

3. The intelligent electronic accordion according to claim 1, characterized in that: The right-hand voice changer executing voice change component (41) and the left-hand voice changer executing voice change component (48) are based on the same principle; they consist of a DC motor or stepper motor (19), a voice changer lever (20), a voice changer control circuit board (21), a voice changer motor bracket (22), and an intelligent MCU and drive electronic circuit on the voice changer control circuit board (21). When a voice change is required, the intelligent MCU controls the drive electronic circuit and the forward and reverse rotation of the DC motor or stepper motor (19) to move the timbre conversion sliding baffle (23) inside the sound hole plate left and right, thereby closing or opening the airflow hole (25) of the sound reed on the sound hole plate (24) to change the timbre.

4. The intelligent electronic accordion according to claim 1, characterized in that: The right-hand reed airflow hole pressure plate control assembly (53) and the left-hand reed airflow hole pressure plate control assembly (59) are based on the same principle. They consist of a DC motor or stepper motor (19), a motor-reed airflow hole pressure plate connecting rod (27), a reed airflow hole pressure plate (28), a reed airflow hole pressure plate lifting height pressing limit cover (54), a reed airflow hole pressure plate motor bracket (26), a motor wiring adapter plate (55), and a reed airflow hole pressure plate motor control circuit board (38). The reed airflow hole pressure plate motor control circuit board (38) is equipped with an intelligent MCU and a drive electronic circuit. The intelligent MCU controls the drive electronic circuit and the forward and reverse rotation of the DC motor or stepper motor (19) to lift or press the reed airflow hole pressure plate (28), thereby controlling the opening or closing of the reed airflow hole (25) on the sound hole plate (24) and determining whether the corresponding right-hand reed (39) or left-hand reed (50) vibrates to produce sound.

5. The intelligent electronic accordion according to claim 1, characterized in that: The color touch screen (30) consists of a color screen, a touch circuit, a display driver circuit, and an interface circuit, and realizes the function display and function switching of this intelligent electronic accordion.

6. The intelligent electronic accordion according to claim 1, characterized in that: The Bluetooth communication module consists of a Bluetooth communication chip, an antenna, and a communication interface. It is installed on the main control circuit board (35) to complete the wireless communication connection with external smart dedicated devices or smartphones.

7. The intelligent electronic accordion according to claim 1, characterized in that: The bellows (3) consists of a traditional bellows, a left and right bellows power supply and communication bridge connector (44), and a straight-through connecting wire between the left and right bellows power supply and communication bridge connector (44), thereby realizing the bridging function of the power supply and communication lines of the left and right parts of the present invention.

8. The intelligent electronic accordion according to claim 1, characterized in that: All MCUs in this intelligent electronic accordion are connected via a bus intelligent network, and all execution components are controlled electronically and electrically at the edge. The accordion establishes a wireless communication connection with external intelligent dedicated devices or smartphones through the Bluetooth communication module.

9. The intelligent electronic accordion according to claim 1, characterized in that: After establishing a communication connection with an external smart device or smartphone, the smart electronic accordion can automatically play the left hand part, the right hand part, or both hands, according to the sheet music of the external smart device or smartphone APP music software, and upload the music data played by the player.

10. The intelligent electronic accordion according to claim 1, characterized in that: The left and right hand digital keyboards are not mechanically connected to the left and right hand reed airflow hole pressure plates. The correspondence between the two can be arbitrarily combined. By setting the right hand tone changer button (8) or color touch screen (30), the free switching of the A, B, C system arrangement of the bayan right hand keyboard can be realized. By setting the left hand tone changer button (11) or color touch screen (30), the free switching of the bass A, B, C system arrangement of the left hand bass keyboard can be realized, and free transposition can be realized.

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