Intelligent electronic accordion

Abstract

Provided is an intelligent electronic accordion. According to the invention, while the appearance of a traditional accordion and the principle and tone of the sound production of a gong pushed by air flow of an air bellow are kept, a plurality of intelligent MCU chips, an electronic technology, a motor dragging technology, a Bluetooth wireless communication technology and a man-machine interaction technology of a color touch display screen are adopted; a pure mechanical Bass mechanism is subversively canceled, complicated mechanical transmission control is simplified, mechanical execution mechanisms of the left and right hand sound changing devices are introduced, and a large amount of intelligent control is introduced, so that the intelligence, electronization, electronization and light weight of the system are fully embodied; various functions of free bass, a mandible tone changer, left and right hand keyboard A, B and C systems and the like of a traditional accordion are integrated more easily, communication with external intelligent special equipment or an intelligent mobile phone can be achieved, multiple intelligent applications such as automatic playing, automatic ensemble and playing music data uploading of all parts of the accordion are achieved, the effects of learning assistance, teaching assistance and disabled assistance are achieved, and the intelligent accordion is suitable for popularization and application. And the accordion is a change of a traditional accordion.

Description

Technical Field

[0001] The present invention belongs to the field of musical instruments, relates to an accordion, and in particular to an intelligent electronic accordion. Technical Background

[0002] The accordion was introduced into China in the early 20th century. As a foreign musical instrument, after nearly a century of development, it has become a well-known and popular musical instrument in China. So far, the types of accordions have been increasing continuously, and the technology has also been constantly progressing. The product types include traditional accordions and electronic accordions, and the product forms include keyboard accordions, bayan accordions, etc. With the development of society, the improvement of people's living standards and the increasing pursuit of cultural life, it has been loved by more people. The accordion has a loud sound and a wide range, suitable for solo and accompaniment, and is an excellent musical instrument for both music majors and leisure entertainment.

[0003] For many years, the structure of the traditional accordion has changed little. The right-hand keyboard, right-hand tone changer, left-hand bass mechanism, and left-hand tone changer all adopt a pure mechanical structure, which is heavy in weight, complex in maintenance and repair, and requires professional technical personnel to complete. It has high requirements for the structural strength of the overall chassis to ensure that the mechanical actions of each part are in place without air leakage, noise generation, and movement jamming. Therefore, it is very difficult to reduce the weight of the box and its maintainability.

[0004] In recent years, the electronic accordion has emerged. Similar to an electronic keyboard, its appearance is basically the same as that of a traditional accordion. Its sound generation principle is the same as that of electro-acoustic musical instruments and belongs to the category of electro-acoustic musical instruments. Although the electronic accordion has various types of accordion tone libraries, there are significant differences in the music effects between the tones and the vibration of the reeds of the traditional accordion. There are also lacks of music effects generated by playing actions such as bellows shaking and sudden bellows pulling.

[0005] The intelligent electronic accordion adopts an MCU intelligent chip, electronic technology, and motor drive technology, cancels various complex mechanical structures inside the traditional accordion, and retains the sound generation principle of the traditional tone reeds, enabling the performer to not only feel the sound beauty of the traditional accordion but also experience the light weight, powerful functions, convenient maintenance, and more intelligent applications of the intelligent electronic accordion. Summary of the Invention

[0006] While retaining the appearance of a traditional accordion, the principle and timbre of sound production by the bellows airflow pushing the reed, the present invention adopts multiple intelligent MCU chips, electronic technology, motor drive technology, and Bluetooth wireless communication technology. Subversively, it cancels the purely mechanical bass mechanism and streamlines the complicated mechanical transmission control mechanism for the left and right hand tone changers, introducing a large amount of intelligent control, reflecting the intelligence, electronization, electrification, and lightweight of the present invention. It is easier to integrate various functions of the traditional accordion, such as free bass, jaw tone changer, left and right hand keyboard A, B, C systems, etc. It can communicate with external intelligent devices or smartphones, realizing multiple intelligent applications such as automatic performance, automatic ensemble, and uploading of performance music data of various parts of the accordion, playing the role of assisting learning, teaching, and the disabled, and also being a revolution to the traditional accordion.

[0007] The main purposes of the present invention include the following aspects

[0008] Retain the sound production principle of the traditional reed, that is, produce sound by the vibration of the reed, and present the perfect accordion timbre.

[0009] Adopt MCU intelligent chips, electronic control technology, and motor drive technology to detect the left - hand bass buttons, right - hand traditional keyboard or Bayan buttons, identify the performance actions of the performer, and complete the opening and closing control of the air - flow holes 25 of the left and right reeds of the accordion through electronic circuits and motor drive, achieving the same performance experience as the traditional accordion.

[0010] Adopt MCU intelligent chips, electronic control technology, and motor drive technology to detect the left - hand tone - changer buttons 11, right - hand tone - changer buttons 8, right - hand wrist tone - changer buttons 9, and jaw tone - changer buttons 10, identify the actions of the performer to change the timbre, and complete the occlusion and opening control of the reed sound holes in different pitch ranges of the left and right hands through electronic circuits and motor drive, achieving different combinations of open air - flow holes 25 of the reeds in different pitch ranges, realizing the change of different timbres, replacing the traditional mechanical transmission structure, improving the reliability in use, and reducing the weight.

[0011] Adopt a color touch - screen display 30 or other types of displays to show the current working state of the accordion, information such as the left - hand timbre, right - hand timbre, the bass note name when the left - hand bass keyboard 7 buttons are pressed, the corresponding note names when the right - hand keyboard 5, 6 or Bayan buttons 12, 13 are pressed, the current key, working mode, battery power, etc. First, it solves the problem that the performer cannot see the left - hand bass buttons and does not know the timbre gear, and that the right - hand needs to turn the head to see the timbre position of the tone - changer. It can also conveniently see the pronunciation note names corresponding to the pressed keys or buttons, as well as information such as the current working state of the accordion.

[0012] The use of intelligent electronic control technology and motor drive technology reduces the weight of accordion-related components. In particular, it replaces the traditional complex bass mechanism, creating a resonance space for the air flow of the left-hand reed sound, giving the performer a more relaxed and beautiful accordion tone experience.

[0013] The MCU intelligent chip enables transposition performance for beginners who are not familiar with the semitone keys, and the function of temporary key change during the performer's improvisational accompaniment. It conveniently realizes the full-function mutual switching between the 7 traditional bass modes of the left-hand bass keyboard and the free bass modes of System A, System B, and System C. It also conveniently realizes the arbitrary switching of the 12 white (whole-tone) buttons and 13 black (semitone) buttons on the right hand of the bayan accordion into System A, System B, and System C.

[0014] Equipped with Bluetooth wireless communication, it completes the communication function with smartphones or external intelligent devices, realizing the input and output of music data, software update and upgrade, and the digital interface for intelligent function expansion.

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

[0016] Retain the reed box components 40, 49, the bellows 3, and the appearance of traditional keyboard accordions and bayan accordions.

[0017] Remove the metal connecting rod 15 between the relatively long right-hand keyboard 5, 6 or bayan buttons 12, 13 and the reed air flow pressing plate 28, and remove the complex left-hand mechanical bass mechanism 18. Adopt electronic control and motor drive technology to convert the rotational energy of the motor into the lifting and pressing actions of the reed air flow pressing plate 28. As shown in the appendix Figure 11 、 12 When the MCU and drive circuit on the reed air flow hole pressing plate motor control circuit board 38 drive the DC motor or stepper motor 19 to rotate counterclockwise, it will drive the motor and the reed air flow hole pressing plate connecting rod 27, and the reed air flow hole pressing plate 28 will be lifted, and the reed air flow hole 25 will be opened. The lifting height is restricted by the pressing-down limit cover plate 54 of the reed air flow hole pressing plate lifting height. As shown in the appendix Figure 12 When the MCU and drive circuit on the reed air flow hole pressing plate motor control circuit board 38 drive the DC motor or stepper motor 19 to rotate clockwise, it will drive the motor and the reed air flow hole pressing plate connecting rod 27, and the reed air flow hole pressing plate 28 will be pressed down, and the reed air flow hole 25 will be closed.

[0018] Remove the right-hand traditional mechanical mute components 14, 16 and the left-hand traditional mechanical mute components 17. Adopt electronic control and motor drive technology to convert the rotational energy of the motor into the opening and closing movement actions of the tone conversion sliding baffle 23 inside the left- and right-hand mute sound holes. As shown in the appendix Figure 6The left and right hand voice changer execution voice change assembly is shown in the schematic diagram and is composed of a DC motor or a stepper motor 19, a voice changer lever 20, a voice changer control circuit board 21, and a voice changer motor bracket 22. Figure 7 As shown in FIG. 1 , the tone conversion sliding baffle 23 in the sound hole plate is installed in a slidable groove between the sound hole plate 24 and the tone conversion sliding baffle cover 56. Figure 8 As shown, the head of the tone changer lever 20 is inserted into the tone changer lever shifting slot 58 of the tone conversion sliding baffle in the sound hole plate. When the MCU driving 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, thereby shifting the tone conversion sliding baffle 23 in the sound hole plate to the right through the tone conversion sliding baffle lever shifting slot 58 in the sound hole plate, so that the position of the tone conversion sliding baffle airflow opening 57 in the sound hole plate is completely staggered with the gong airflow hole 25 on the sound hole plate 24, that is, all the gong airflow holes 25 of the row of gongs are closed. As shown in the attached figure Figure 9 As shown, when the MCU driving circuit on the sound 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 sound changer lever 20 to rotate clockwise, thereby moving the sound color conversion sliding baffle 23 in the sound hole board to the left through the sound color conversion sliding baffle in the sound hole board, so that the air flow opening 57 of the sound color conversion sliding baffle in the sound hole board completely overlaps with the position of the sound spring air flow hole 25 on the sound hole board 24, that is, all the sound spring air flow holes 25 of the row of sound springs are opened. Each row of sound springs has a different tone in a different range, and different combinations of sound spring rows constitute different tone change effects.

[0019] The innovation of the present invention is to use multiple MCU smart chips to form a control system for the smart accordion (such as Figure 13 ), the system includes a main control MCU, an EEPROM data storage circuit, a color touch display, 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, an MCU right-hand gong air flow damper cover driver 1-n, an MCU right-hand voice changer air outlet 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, an MCU left-hand gong air flow damper cover control 1-n, an MCU left-hand voice changer air outlet baffle driver 1-n, left and right-hand power supplies, a communication bridge circuit, a power management circuit, a battery protection and charge and discharge management circuit, a battery, and a Type-C charging interface.

[0020] The innovation of the present invention is to adopt motor drive technology, a micro DC motor or a stepper motor 19, a tone changer lever 20, a tone changer control circuit board 21, and a tone changer motor component bracket 22, achieving the replacement of the traditional accordion's purely mechanical tone changer for switching the timbres of the left and right hands, with the advantages of simple structure, light weight, and intelligent control.

[0021] The innovation of the present invention is to adopt motor drive technology, a micro DC motor or a stepper motor 19, a connecting rod between the motor and the reed air hole pressing plate 27, a reed air hole pressing plate 28, a control circuit board for the left and right hand reed air hole pressing plate motors 38, and a reed air hole pressing plate motor bracket 26, achieving the replacement of the traditional accordion's purely mechanical structure for the opening and closing actions of the left and right hand reed air hole pressing plates, with the advantages of simple structure, light weight, and intelligent control.

[0022] The innovation of the present invention is to use an MCU and a Bluetooth communication chip to achieve communication with external intelligent dedicated devices or smartphones, realizing the automatic performance function of the intelligent accordion of the present invention. The user only needs to pull the bellows 3 without pressing the black and white keys 5, 6 on the right hand and the bass keys 7 on the left hand to achieve automatic performance according to the score of the intelligent device, which provides a very intelligent and fast way of practice for the user to practice the bellows strength, weakness, and various bellows techniques.

[0023] The innovation of the present invention is to use an MCU and a Bluetooth communication chip to achieve communication with external intelligent dedicated devices or smartphones, realizing the left hand automatic performance function of the intelligent accordion of the present invention. The user only needs to pull the bellows 3 and press the black and white keys 5, 6 on the right hand without pressing the bass keys 7 on the left hand to achieve automatic performance of the left hand part according to the score of the intelligent device, which provides a very intelligent and fast way of practice for the user to practice the bellows strength, weakness, and various bellows techniques and the right hand melody.

[0024] The innovation of the present invention is to use an MCU and a Bluetooth communication chip to achieve communication with external intelligent dedicated devices or smartphones, realizing the right hand automatic performance function of the intelligent accordion of the present invention. The user only needs to pull the bellows 3 and press the bass keys 7 on the left hand without pressing the black and white keys 5, 6 on the right hand to achieve automatic performance of the right hand part according to the score of the intelligent device, solving the boredom of only practicing the left hand bass accompaniment and the coordination between the left and right hands, which provides a very intelligent and fast way of practice for the user to practice the bellows strength, weakness, and various bellows techniques and the left hand bass.

[0025] The innovation of the present invention is that the intelligent control methods in

[0022] ,

[0023] , and

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

[0026] The innovation of the present invention is the adoption of a color touch display screen 30, which displays the timbre states of the right hand variator 8, the timbre state of the left hand variator 11, shows the chord note names of the left hand bass during performance, and the note names of the black and white keys of the right hand. The transposition control and function settings are realized through the touch function.

[0027] The innovation of the present invention is to use an MCU and a Bluetooth communication chip to achieve communication with external intelligent dedicated devices or smartphones. The melody score data played by the performer can be output to external devices to realize the generation of the score of the played melody. It can also be compared with the scores in external intelligent devices to give errors or evaluations in the performance.

[0028] The innovation of the present invention is to use multiple MCUs, and the MCUs communicate with each other through a bus. This not only realizes edge intelligent control, but also enables multiple MCUs to undertake their respective control tasks, reducing the workload of the main control MCU, improving the response speed of the MCUs, and at the same time greatly reducing wiring and lowering production and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0031] Figure 3 It is a schematic diagram of the mechanical transmission of the right hand variator of a traditional accordion.

[0032] Figure 4 It is a schematic diagram of the mechanical transmission of the left hand variator of a traditional accordion.

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

[0034] Figure 6 It is a schematic diagram of the variator execution variable sound component of the present invention.

[0035] Figure 7 It is a schematic diagram of the variator execution variable sound composition of the present invention.

[0036] Figure 8 It is a schematic diagram of the variator execution variable sound closing principle of the present invention.

[0037] Figure 9 It is a schematic diagram of the variator execution variable sound opening principle of the present invention.

[0038] Figure 10 It is a schematic diagram of the composition of the sound reed air flow hole pressure plate control component of the present invention.

[0039] Figure 11 It is a schematic diagram of the sound reed air flow hole pressure plate lifting control principle of the present invention.

[0040] Figure 12 This is a schematic diagram of the control principle for the pressing down of the air flow hole pressing plate of the sound reed of the present invention.

[0041] Figure 13 This is a block diagram of the intelligent electronic control principle of the present invention.

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

[0043] Figure 15 This is a schematic diagram of the rear lower appearance of the intelligent accordion according to an embodiment of the present invention.

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

[0046] Figure 18 This is a schematic diagram of the interior of the body of the right - hand part of the intelligent accordion according to an embodiment of the present invention.

[0047] Figure 19 This is a schematic diagram of the power supply and communication bellows bridging circuit for the left and right hands of the present invention.

[0048] Figure 20 This is a schematic diagram of the interior of the lid of the left - hand part of the present invention.

[0049] Figure 21 This is a schematic diagram of the interior of the body of the left - hand part of the present invention.

[0050] Figure 22 This is a schematic diagram of the installation of the main control board inside the lid of the left - hand part of the present invention.

[0051] In the attached drawings of the specification, marks 1 right-hand accordion body, 2 left-hand accordion body, 3 bellows, 4 right-hand accordion cover, 5 right-hand white (full tone) keyboard, 6 right-hand black (semitone) 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 (full tone) button, 13 bayan black (semitone) 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 connecting rod, 17 metal transmission component of traditional accordion left hand tone changer, 18 metal component of traditional accordion left hand bass mechanism, 19 DC motor or stepper motor, 20 tone changer lever, 21 tone changer control circuit board, 22 tone changer motor bracket, 23 tone conversion sliding baffle in sound hole plate, 24 sound hole plate, 25 gong air flow hole, 26 gong air flow hole pressure plate motor bracket, 27 motor and gong air flow hole pressure plate connecting rod, 28 gong air flow hole pressure plate, 29 left hand accordion cover, 30 color touch display screen, 31 power switch, 32 Type-C charging port, 33 jaw voice changer detection circuit board, 34 power management circuit, battery protection and charge and discharge management circuit components, 35 main control circuit board, 36 battery, 37 right hand voice changer detection and color touch display circuit board, 38 sound spring air flow hole pressure plate motor control circuit board, 39 right hand sound spring reed, 40 right hand sound spring box, 41 right hand voice changer execution sound change component, 42 right hand sound hole plate component, 43 right hand power supply and communication bridge elastic contact head, 44 bellows power supply and communication bridge seat, 45 left hand power supply and communication bridge elastic contact head, 46 left-hand main control circuit board, 47 flexible flat cable, 48 left-hand tone changer execution tone change component, 49 left-hand gong box, 50 left-hand gong reed, 51 left-hand sound hole plate component, 52 micro switch, 53 right-hand gong air flow hole pressure plate motor control component, 54 gong air flow hole pressure plate lifting height pressing limit cover plate, 55 motor wiring adapter plate, 56 tone color conversion sliding baffle cover plate, 57 tone color conversion sliding baffle air flow opening in the sound hole plate, 58 tone color conversion sliding baffle tone changer lever toggle slot in the sound hole plate, 59 left-hand gong air flow hole pressure plate motor control component.

[0052] The patent implementation example of this invention is attached Figure 6 -Attached Figure 22 The following is a further detailed description of the embodiment.

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

[0054] The right-hand part includes a right-hand piano body 1, a right-hand piano cover 4, a right-hand white (full-tone) keyboard 5, a right-hand black (semi-tone) keyboard 6, a right-hand pitch changer button 8, a right-hand wrist pitch changer button 9, a right-hand wrist pitch changer button pressing micro switch 52, a lower jaw pitch changer button 10, a right-hand pitch changer execution pitch change component 41, a right-hand gong air flow hole pressure plate motor control component 53, a right-hand sound hole plate component 42, a color touch display screen 30, a main control circuit board 35, a micro switch 52 under the black and white keyboard button, a lower jaw pitch changer detection circuit board 33, a micro switch 52 under the lower jaw pitch changer button, a power management circuit, a battery protection and charge and discharge management circuit component 34, a battery 36, a right-hand power supply and communication bridge elastic contact head 43, a power switch 31, a Type-C charging interface 32, a right-hand pitch changer detection and color touch display circuit board 37, a right-hand gong reed 39, and a right-hand gong box 40.

[0055] The right hand voice changer performs the voice change component 41. Figure 6 , which is composed of a DC motor or a stepping motor 19, a voice changer lever 20, a voice changer control circuit board 21, and a voice changer motor bracket 22.

[0056] Right hand gong air flow hole pressure plate control assembly 53 see attached Figure 10 It consists of a DC motor or a stepper motor 19, a gong air flow hole pressure plate motor bracket 26, a motor and gong air flow hole pressure plate connecting rod 27, a gong air flow hole pressure plate 28, a gong air flow hole pressure plate lifting height pressing down limit cover plate 54, a motor wiring adapter plate 55, and a gong air flow hole pressure plate motor control circuit board 38.

[0057] The right-hand sound hole plate assembly consists of a sound hole plate 24, a timbre conversion sliding baffle 23 in the sound hole plate, a gong air flow hole 25, a timbre conversion sliding baffle cover plate 56, an air flow opening 57 for the timbre conversion sliding baffle in the sound hole plate, and a timbre conversion sliding baffle tone changer lever shifting slot 58 in the sound hole plate.

[0058] The power management circuit, battery protection and charge-discharge management circuit component 34 is composed of a power management circuit, a battery protection and charge-discharge management circuit.

[0059] The bellows part includes bellows 3, left and right bellows power supplies and communication bridge connector 44, and flexible cable 47, see attached Figure 19 .

[0060] The left-hand part includes a left-hand piano body 2, a left-hand piano cover 29, a left-hand bass keyboard 7, a left-hand tone changer button 11, a micro switch 52 under the left-hand tone changer button, a left gong air hole pressure plate control component 59, a left-hand sound hole plate component 42, a left-hand power supply and communication bridge elastic contact head 45, a left-hand main control circuit board 46, a left-hand bass keyboard pressing micro switch 52, a left-hand tone changer execution tone change component 48, a left-hand gong box 49, a left-hand gong reed 50, and a left-hand sound hole plate component 51.

[0061] The left-hand voice changer execution voice change component 48 is composed of a DC motor or a stepping 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 gong air flow hole pressure plate control assembly 59 is composed of a DC motor or a stepper motor 19, a gong air flow hole pressure plate motor bracket 26, a motor and gong air flow hole pressure plate connecting rod 27, a gong air flow hole pressure plate 28, a gong air flow hole pressure plate lifting height pressing down limit cover plate 54, a motor wiring adapter plate 55, and a gong air flow hole pressure plate motor control circuit board 38.

[0063] The left-hand sound hole plate assembly consists of a sound hole plate 51, a timbre conversion sliding baffle 23 in the sound hole plate, a gong air flow hole 25, a timbre conversion sliding baffle cover plate 56, an air flow opening 57 for the timbre conversion sliding baffle in the sound hole plate, and a timbre conversion sliding baffle tone changer lever shifting slot 58 in the sound hole plate.

[0064] Working principle description

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

[0066] Right-hand tone changer: When it is detected that the performer presses the right-hand tone changer button 8, the right-hand wrist tone changer button 9, and the lower jaw tone changer button 10, the main control MCU will open and close the tone conversion sliding baffle 23 in the right-hand sound hole plate 24 corresponding to the corresponding tone, that is, communicate with the MCU on the corresponding tone changer control circuit board 21 through the bus and issue an opening and closing 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, driving the tone changer lever 20 to move the tone conversion sliding baffle 23 in the sound hole plate to open or close. The tone is changed, and the current right-hand accordion tone is displayed through the color touch screen 30, and the current tone state is stored in the EEPROM data storage circuit.

[0067] Left-hand mute: When it is detected that the performer presses the left-hand mute button 11, the main control MCU will perform opening and closing operations on the tone conversion sliding baffle 23 in the left-hand tone hole plate 51 corresponding to the corresponding tone, that is, communicate with the MCU on the corresponding mute control circuit board 21 through the bus and issue an opening or closing command. After receiving the command, the MCU on the mute control circuit board 21 controls the corresponding DC motor or stepper motor 19 to rotate in the required direction, driving the mute lever 20 to actuate and toggle the tone conversion sliding baffle 23 in the tone hole plate to open or close, realizing the transformation of the tone, and displaying the current left-hand accordion tone on the color touch display screen 30, while storing the current tone state in the EEPROM data storage circuit.

[0068] Right-hand keyboard playing: When it is detected that the performer presses or lifts the right-hand white (whole-tone) keyboard 5 or the right-hand black (semi-tone) keyboard 6, the main control MCU will communicate with the corresponding MCU on the right-hand tone reed air hole pressing plate motor control circuit board 38 through the bus and issue a command to lift or press the tone reed air hole pressing plate 28. After receiving the command, the corresponding MCU on the right-hand tone reed air hole pressing plate motor control circuit board 38 controls the corresponding DC motor or stepper motor 19 to rotate in the required direction, driving the tone reed air hole pressing plate connecting rod 27 and the tone reed air hole pressing plate 28 to lift or press. When the tone reed air hole pressing plate 28 is lifted, the push-pull bellows air flow will pass through the opened tone reed air holes 25 and the corresponding tone reed reeds 39, and the reeds will vibrate to emit the sound corresponding to the pitch, and the pitch name of the currently sounding pitch will be displayed on the color touch display screen 30.

[0069] Left-hand bass keyboard playing: When it is detected that the performer presses or lifts the left-hand bass keyboard 7, the main control MCU will communicate with the corresponding MCU on the left-hand tone reed air hole pressing plate motor control circuit board 38 through the bus and issue a command to lift or press the tone reed air hole pressing plate 28. After receiving the command, the corresponding MCU on the left-hand tone reed air hole pressing plate motor control circuit board 38 controls the corresponding DC motor or stepper motor 19 to rotate in the required direction, driving the tone reed air hole pressing plate connecting rod 27 and the tone reed air hole pressing plate 28 to lift or press. When the tone reed air hole pressing plate 28 is lifted, the push-pull bellows air flow will pass through the opened tone reed air holes 25 and the corresponding tone reed reeds 50, and the reeds will vibrate to emit the sound corresponding to the pitch, and the pitch name of the currently sounding pitch of the bass will be displayed on the color touch display screen 30.

[0070] Right - hand intelligent performance: When the intelligent accordion is set to the right - hand intelligent performance mode or both the left and right hands are in the intelligent performance mode, the system activates the Bluetooth wireless communication circuit. After pairing with an external intelligent dedicated device or a dedicated APP software on a smartphone, a communication connection is established. Data for the right - hand automatic performance is transmitted through the external intelligent dedicated device or the dedicated APP software on the smartphone to control the right - hand part of the intelligent accordion to complete the automatic playing of the piece. At this time, the user must pull the bellows simultaneously to produce sound, and pressing the white (whole - tone) keyboard 5 or the black (semi - tone) keyboard 6 on the right - hand is ineffective.

[0071] Left - hand intelligent performance: When the intelligent accordion is set to the left - hand intelligent performance mode or both the left and right hands are in the intelligent performance mode, the system activates the Bluetooth wireless communication circuit. After pairing with an external intelligent dedicated device or a dedicated APP software on a smartphone, a communication connection is established. Data for the left - hand automatic performance is transmitted through the external intelligent dedicated device or the dedicated APP software on the smartphone to control the left - hand part of the intelligent accordion to complete the automatic playing of the piece. At this time, the user must pull the bellows simultaneously to produce sound, and pressing the left - hand bass keyboard 7 is ineffective.

[0072] Performance data upload: When the intelligent accordion is set to the data - upload function, the system activates the Bluetooth wireless communication circuit. After pairing with an external intelligent dedicated device or a dedicated APP software on a smartphone, a communication connection is established. The pitch, duration, and timbre data of the performer's left and right hands are uploaded to the external intelligent dedicated device or the smartphone through the Bluetooth communication circuit of the intelligent accordion. After receiving the data, the dedicated APP software on the external intelligent dedicated device or the smartphone converts it into the corresponding sheet music, or compares it with the existing sheet music to give an evaluation or the error location.

[0073] System settings: Through the color touch display screen 30, settings for transposing performance, right - hand intelligent performance, left - hand intelligent performance, simultaneous automatic performance of both left and right hands, data upload, and system upgrade functions of the intelligent accordion can be made.

[0074] System upgrade: When the intelligent accordion is set to the system - upgrade function, the system activates the Bluetooth wireless communication circuit. After pairing with an external intelligent dedicated device or a dedicated APP software on a smartphone, a communication connection is established to upgrade to the new version of the software and expand the functional applications of the intelligent accordion.

[0075] Working principle of the power supply part: The power management circuit provides regulated power supplies of 3.3V and 5V for the MCU, electronic circuits, and motors of the intelligent electronic accordion. The battery protection and charge-discharge management circuit completes the battery charging management, that is, disconnects the charging circuit after the battery is fully charged, and the discharge management means disconnects the battery power supply when the battery voltage is lower than 3V. The battery protection is to disconnect the battery power supply when the battery temperature is higher than 60°C or lower than -20°C or the circuit is short-circuited resulting in a current > 5A. When the battery working environment returns to the normal value, the protection circuit will resume power supply.

Claims

1. Intelligent electronic accordion features: The invention is composed of a right-hand piano body, a right-hand electronic keyboard, a right-hand tone changer executing tone changing component 41, a right-hand gong air flow hole pressure plate control component 53, a color touch display screen 30, a Bluetooth communication module, a bellows, a left-hand piano body, a left-hand bass electronic keyboard, a left-hand tone changer executing tone changing component 48, a left-hand gong air flow hole pressure plate control component 59, a power supply component and a battery, and adopts multiple MCU intelligent collaborative technologies, electronic technologies, motor driving technologies, Bluetooth wireless communication technologies and color touch display screen human-computer interaction technologies to realize the intelligent application, electronic and automatic control method of the invention.

2. The right-hand electronic keyboard and the left-hand bass electronic keyboard according to claim 1 have the same principle and are characterized in that: The right-hand electronic keyboard is composed of full-tone 5 and half-tone 6 keyboards or bayan full-tone 12 and half-tone 13 buttons, right-hand voice changer button 8, right-hand wrist voice changer button 9, jaw voice changer button 10, main control circuit board 35, jaw voice changer detection circuit board 33, right-hand voice changer detection and color touch display circuit board 37, and micro switches 52 installed on the main circuit board 35, the jaw voice changer detection circuit board 33, and the right-hand voice changer detection and color touch display circuit board, so as to realize the detection function of the pressing action of the right-hand keyboard 5, 6, or the bayan buttons 12, 13 and the voice changer keyboard 8; the left-hand bass electronic keyboard is composed of the left-hand bass keyboard 7, the left-hand voice changer button 11, and the left-hand main control circuit board 46, and the left-hand main control circuit board 46 is equipped with an intelligent MCU and a micro switch 52, so as to realize the detection function of the pressing action of the left-hand bass keyboard 7 and the left-hand voice changer button 11.

3. According to claim 1, the right-hand voice changer executing voice change component 41 and the left-hand voice changer executing voice change component 48 have the same principle and are characterized by: It consists of a DC motor or a stepper motor 19, a tone changer lever 20, a tone changer control circuit board 21, a tone changer motor bracket 22, and an intelligent MCU and a driving electronic circuit on the tone changer control circuit board 21. When the tone needs to be changed, the intelligent MCU controls the driving electronic circuit and the forward and reverse rotation of the DC motor or the stepper motor 19 to achieve the left and right movement of the tone conversion sliding baffle 23 in the sound hole plate, so as to achieve the effect of closing or opening the gong air flow hole 25 on the sound hole plate 24 to change the tone. It is a method to replace the mechanical transmission mechanism of the traditional left and right tone changers of the accordion.

4. According to the right-hand gong airflow hole pressure plate control assembly 53 and the left-hand gong airflow hole pressure plate control assembly 59 of claim 1, the two assemblies have the same principle and are characterized by: It consists of a DC motor or a stepper motor 19, a connecting rod 27 between the motor and the gong air flow hole pressure plate, a gong air flow hole pressure plate 28, a gong air flow hole pressure plate lifting height pressing limit cover plate 54, a gong air flow hole pressure plate motor bracket 26, a motor wiring adapter plate 55, and a gong air flow hole pressure plate motor control circuit board 38. The gong air flow hole pressure plate motor control circuit board 38 is installed with an intelligent MCU and a driving electronic circuit. The intelligent MCU controls the driving electronic circuit and the forward and reverse rotation of the DC motor or the stepper motor 19 to realize the lifting or pressing action of the gong air flow hole pressure plate 28, so as to control the gong air flow hole 25 on the sound hole plate 24 to be closed or opened, and determine whether the corresponding right-hand gong reed 39 or the right-hand gong reed 50 vibrates to make a sound. It is a method to replace the mechanical transmission mechanism of the right-hand gong air flow hole pressure plate and the complex bass mechanism of the left hand of the traditional accordion.

5. The color touch display screen according to claim 1, characterized in that: The device is composed of a color display screen, a touch circuit, a display drive circuit and an interface circuit, and realizes the functions of function display and function switching of the invention.

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

7. The bellows according to claim 1, characterized in that: It is composed of a traditional bellows, a bellows power supply and a communication bridge seat 44 on each side, and direct connecting wires of the left and right bellows power supplies and the communication bridge seat 44, so as to realize the bridging effect of the power supply and communication lines of the left and right parts of the present invention.

8. According to the intelligent application, electronic and automated control of claim 1, it is characterized by: All MCUs in the present invention adopt bus intelligent networking, and all execution components adopt intelligent electronic and electric edge control. Through the Bluetooth communication module described in Claim 1, wireless communication connection is established with external intelligent dedicated equipment or smart phones to realize multiple intelligent applications and software upgrades.

9. The intelligent application according to claim 1 and the multiple intelligent applications according to claim 8, characterized in that: After the intelligent electronic accordion establishes a communication connection with an external intelligent dedicated device or a smart phone, it can automatically play the left hand part, the right hand part, or both hands according to the music score of the external intelligent dedicated device or the smart phone APP music software, and upload the music data played by the player, so that the user can practice the bellows alone, the left hand alone, or the right hand alone. The wireless data upload realizes a method of converting the player's playing movements into music scores and saving them in the external intelligent dedicated device or smart phone.

10. According to claim 1, the intelligent and electronic method is characterized in that: The left-hand digital keyboards have no mechanical connection with the left-hand gong air flow hole pressure plates, and the corresponding relationship between the two can be arbitrarily combined. Through the right-hand tone changer 8 or the color touch display screen setting, the free switching of the A, B, and C system arrangements of the bayan's right-hand keyboard can be realized, and through the left-hand tone changer 11 or the color touch display screen setting, the free switching of the A, B, and C system arrangements of the left-hand bass keyboard can be realized, and a method for free transposition can be realized.

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