CN203102846U - Conversion plate for intelligent piano - Google Patents
Conversion plate for intelligent piano Download PDFInfo
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- CN203102846U CN203102846U CN 201220733741 CN201220733741U CN203102846U CN 203102846 U CN203102846 U CN 203102846U CN 201220733741 CN201220733741 CN 201220733741 CN 201220733741 U CN201220733741 U CN 201220733741U CN 203102846 U CN203102846 U CN 203102846U
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Abstract
The utility model discloses a conversion plate for an intelligent piano, which comprises a power supply circuit, a USB interface circuit, a MIDI interface circuit, a damper pedal detection circuit and a keyboard scanning circuit. The power supply circuit comprises fuses L1-L2, diodes D1-D3, a capacitor C1, a resistor R1, a power switch SW1, a voltage-regulator tube V1, a socket POW and so on. The USB interface circuit comprises a chip USB, fuses L3-L6, and the like. The MIDI interface circuit comprises a connecting terminal MIDI, fuses L7-L11, and the like. The damper pedal detection circuit comprises a pedal connecting terminal CN3, fuses L12-L13, and the like. The keyboard scanning circuit comprises a keyboard connecting terminal CN1, a keyboard connecting terminal CN2, and the like. The conversion plate for the intelligent piano can be used for acquiring actions applied on the pedal and the keyboard of the piano in real time and then converting the actions into electric signals to be transmitted to a microprocessor. Therefore, the intelligent level of the piano is improved.
Description
Technical field
The utility model relates to a kind of change-over panel that is used for intelligent piano.
Background technology
Along with the develop rapidly of electronic technology, the piano conventional art combines with modern electronic technology, and pianotron just arises at the historic moment.Digital piano has been Duoed many " number " functions peculiar than the traditional mechanical piano.Digital piano not only has the repertoire of mechanical piano with digital technology, also have unique multiple tone color, storage memory, modified tone, audio mixing, beat function, and midi interface, earphone, microphone interface etc. are arranged, realized combining of piano conventional art and modern high technology.Now, the more and more children learns piano, but traditional piano study method is uninteresting, and does not possess error correction, and the player also is difficult for finding even play wrong.By special piano training seminar study piano, the training organization that not only will arrange the time specially, and also learning time is short, expense is higher, and the learner can not learn at any time.
Application number is that 200420017550.6 Chinese utility model patent discloses a kind of steel ball that has the scanner uni display device, is provided with scanner and display device on body, and display device is by foot-operated gauge tap control page turning.This piano has been avoided needing to move the problem that music score is made troubles to the player with handspring in the process of playing, but only only possesses the effect that shows and stir music score, can't detect the action of piano button and pedal, can not gather playing information.
Application number is that 200420016436.1 Chinese utility model patent discloses a kind of pianocoder, on the body of piano, bookshelf is set, display is set on the bookshelf, body has host computer, keyboard and mouse are set on body, can show the qin spectrum by computer, also can learn the piano course by online computing.This pianocoder only is that computer is arranged on the piano, and is not interactive between computer and the piano, also can't detect the action of piano button and pedal, can't gather and analyze the playing information of piano.
The utility model content
The utility model is the weak point that exists in the above-mentioned prior art for avoiding, and a kind of change-over panel that is used for intelligent piano is provided, so that gather the key of piano and the action message of pedal.
The utility model be the technical solution problem by the following technical solutions.
The change-over panel that is used for intelligent piano, its design feature are to comprise power circuit, usb circuit, midi interface circuit, Sustain testing circuit and keyboard scanning circuit;
Described power circuit comprises fuse L1～L2, diode D1～D3, capacitor C 1, capacitor C 2, capacitor C 6, electric capacity E1, electric capacity E2, resistance R 1, power switch SW1, stabilivolt V1 and socket POW;
Described usb circuit comprises chip USB, fuse L3～L6, capacitor C 3, capacitor C 7, resistance R 29, resistance R 33, resistance R 34 and resistance R 36;
Described midi interface circuit comprises splicing ear MIDI, fuse L7～L11, capacitor C 8, resistance R 39, resistance R 41 and resistance R 44;
Described Sustain testing circuit comprises pedal splicing ear CN3, fuse L12～L13, capacitor C 4 and resistance R 47; Wherein, an end of described capacitor C 4 is connected between fuse L12 and the resistance R 47, and tie point is RA5;
Described keyboard scanning circuit comprises keyboard splicing ear CN1, keyboard splicing ear CN2, resistance R 2～R28, resistance R 30～R32, resistance R 35, resistance R 37～R38, resistance R 40, resistance R 42～R43, resistance R 45～R46.
The change-over panel that is used for intelligent piano of the present utility model also has following technical characterstic.
Described stabilivolt V1 is triode UR133-AB3-B.
The described change-over panel that is used for intelligent piano also is provided with keyboard signal input port, pedal signal input port, midi signal output interface, USB-MIDI signal output and power supply input port; Described keyboard signal input port and described keyboard splicing ear CN1, keyboard splicing ear CN2 are electrically connected; Described pedal signal input port and described pedal splicing ear CN3 are electrically connected; Described midi signal output interface and described splicing ear MIDI are electrically connected; USB-MIDI signal output and described chip USB are electrically connected; Described power supply input port and socket POW are electrically connected.
Compared with the prior art, the utility model beneficial effect is embodied in:
The change-over panel that is used for intelligent piano of the present utility model, can pass through Sustain testing circuit and keyboard scanning circuit collection, the analysis user playing information, and by USB interface detected information is passed to microprocessor and handle, whether the information that can judge performance by microprocessor is consistent with music score, and when makeing mistakes, performance on display screen, points out, simultaneously by loudspeaker or the prompting of earphone output sound, make the learner when performance makes mistakes, obtain the caution that makes mistakes, possessed good error correction, improve the effect of learning by oneself, had the high degree of intelligence level.The demonstration of music score is consistent with the performance progress, need not manually to control music score and stirs, and the player need not consider to operate the operational issue that music score stirs.The change-over panel that is used for intelligent piano of the present utility model, can gather the action of soft pedal and keyboard in real time, and action is converted into electrical signal transfer gives microprocessor, thereby improved the intelligent level of piano, make the user can learn and grasp knowledge such as music theory, piano performance more intuitively, have the high degree of intelligence level.
Description of drawings
Fig. 1, the connector synoptic diagram that is used for the change-over panel of intelligent piano of the present utility model.
Fig. 2, the power circuit diagram that is used for the change-over panel of intelligent piano of the present utility model.
Fig. 3, the usb circuit figure that is used for the change-over panel of intelligent piano of the present utility model.
Fig. 4, the midi interface circuit diagram that is used for the change-over panel of intelligent piano of the present utility model.
Fig. 5, the Sustain testing circuit figure that is used for the change-over panel of intelligent piano of the present utility model.
Fig. 6, the keyboard scanning circuit figure that is used for the change-over panel of intelligent piano of the present utility model.
Fig. 7, be provided with the hardware principle block scheme of control circuit of the intelligent piano of change-over panel of the present utility model.
Fig. 8, be provided with the outside drawing of an embodiment (body is provided with groove) of the intelligent piano of change-over panel of the present utility model.
Fig. 9, be provided with the outside drawing of an embodiment (be provided with on the body qin lid) of the intelligent piano of change-over panel of the present utility model.
Figure 10, be provided with the external cabling synoptic diagram of interface of the intelligent piano of change-over panel of the present utility model.
Figure 11, be provided with the connector synoptic diagram of the ARM platform that the intelligent piano of change-over panel of the present utility model adopts.
Figure 12, be provided with the connector synoptic diagram of microprocessor of master control board of the intelligent piano of change-over panel of the present utility model.
Figure 13, the LED of master control board that is provided with the intelligent piano of change-over panel of the present utility model show and key circuit figure.
Number in the figure: 1 body, 2 qins lid, 3 display screens, 4 keyboards, 5 power interfaces, 66.5mm earphone jack, 7MIDI OUT interface, 8 Sustain interfaces, 9 switches, 10 volume adjustment holes, 113.5mm earphone jack.
Below pass through embodiment, and the utility model is described in further detail in conjunction with the accompanying drawings.
Embodiment
Referring to Fig. 1, be used for the change-over panel of intelligent piano, comprise power circuit, usb circuit, midi interface circuit, Sustain testing circuit and keyboard scanning circuit;
Described power circuit comprises fuse L1～L2, diode D1～D3, capacitor C 1, capacitor C 2, capacitor C 6, electric capacity E1, electric capacity E2, resistance R 1, power switch SW1, stabilivolt V1 and socket POW;
Described usb circuit comprises chip USB, fuse L3～L6, capacitor C 3, capacitor C 7, resistance R 29, resistance R 33, resistance R 34 and resistance R 36;
Described midi interface circuit comprises splicing ear MIDI, fuse L7～L11, capacitor C 8, resistance R 39, resistance R 41 and resistance R 44;
Described Sustain testing circuit comprises pedal splicing ear CN3, fuse L12～L13, capacitor C 4 and resistance R 47; Wherein, an end of described capacitor C 4 is connected between fuse L12 and the resistance R 47, and tie point is RA5;
Described keyboard scanning circuit comprises keyboard splicing ear CN1, keyboard splicing ear CN2, resistance R 2～R28, resistance R 30～R32, resistance R 35, resistance R 37～R38, resistance R 40, resistance R 42～R43, resistance R 45～R46.
Fig. 1 is the connector synoptic diagram of change-over panel.Change-over panel is provided with keyboard signal input port, pedal signal input port (external pedal I/O interface), midi signal output (be described midi interface, be external MIDI-OUT I/O interface), USB-MIDI signal output (the USB line picks out) and power supply input.
The circuit of this change-over panel comprises usb circuit, is used to provide the power circuit of power supply, the midi interface circuit of output midi signal, be used to detect the action of Sustain the Sustain testing circuit, be used to detect the keyboard scanning circuit of keyboard action.Fig. 2 is a power circuit, and external power source inserts through after the processing such as power circuit filtering, step-down, is master control board and the power supply of each parts.POW-5V is an external power interface.Fig. 3 is a usb circuit, makes master control board that this circuit and external unit swap data can be provided.Fig. 4 is the midi interface circuit, is used to make master control board midi signal can be exported.Fig. 5 and Fig. 6 are respectively Sustain testing circuit and MIDI keyboard scanning circuit, and the main composition part that these two circuit are change-over panels is used to detect the action of pedal and keyboard, and detected actuating signal is passed to microprocessor.
POW socket in the power circuit connects the 5V direct supply, and SW1 is a power switch.5V direct supply, USB power supply, midi interface power supply by diode D1, D2, D3 input, are reduced to 3.3V through stabilivolt UR133-AB3-B and are powered to system respectively.Usb circuit: UD+, UD-connect single-chip microcomputer, realize the USB2.0 data transmission.In the midi interface circuit, single-chip microcomputer TX2 human hair combing waste send the serial communication data, realizes the transmission of MIDI device data.
In the Sustain testing circuit, single-chip microcomputer detects high-low level by the RA5 tie point, and RA5 is a low level when pedal closes.In the keyboard scanning circuit, the RD of single-chip microcomputer, RB, RC, RE, mouth is used for keyboard scan, and the keyboard scan ability of 22x8 is provided.Keyboard is with scan mode work, detailed process: earlier by RD, RB, the RC mouth section of sending gating, one section of each gating, the correspondent section route selection is changed to low level, reads the RE mouth, and the key that is depressed is because of connecting with the section route selection, corresponding ports is input as low level, so just finished the state read-in process of a paragraph key dish (8 keys), done 22 circulations, read in regard to the strong state of row after having finished 88 front-seat keys and 88.Detect the action of soft pedal and keyboard respectively by Sustain testing circuit and keyboard scanning circuit, and action is converted into electric signal transmission, action message can be passed to microprocessor by USB interface, thereby make piano can realize intellectuality.
Adopt the pianotron of change-over panel of the present utility model also to comprise body 1, keyboard 4, pedal, display screen 3 and master control board; Described master control board comprises the power interface 5 that is used to the master control board power supply and power switch, microprocessor, power amplifier chip, two loudspeakers and two parts such as earphone jack that are used to control on/off.Also include the demonstration and the key circuit that are used to export display message and the control information that receives the input of external control button in the described master control board.Described display screen is arranged on the described body; Described keyboard, pedal all are electrically connected with described change-over panel, and described change-over panel is connected with described display screen by microprocessor; Be connected with midi interface on the described change-over panel; Described keyboard, pedal all are connected with described power interface; Be connected with the volume by-pass cock on the sound output of described microprocessor, described volume by-pass cock is connected with two earphone jacks with two loudspeakers respectively.Described body is provided with groove, and display screen is arranged on the described body in hinged mode, and display screen is embedded within the described groove when display screen closes.Turning display screen during use, playing information or the error message that can observe demonstration at any time.The time spent is not embedded in display screen in the groove.Perhaps, also be provided with qin lid 2 on the described body 1, described qin lid 2 is arranged on the described body 1 in hinged mode, and the one side near keyboard on the described qin lid 2 is provided with described display screen 3.Described qin lid is articulated on the described body, and the one side of the close keyboard of upset back qin lid is relative with the player just, makes the player can watch display screen at an easy rate.Described display screen is a liquid crystal touch screen; Described microprocessor is an arm processor.Communicate by letter by the mode of radio communication or wire communication between described microprocessor and the high in the clouds server.Described two earphone jacks are respectively 3.5mm earphone jack 11 and 6.5mm earphone jack 6.Two earphone jacks are connected with two loudspeakers respectively, and corresponding loudspeaker stops output sound when earphone jack grafting earphone.Be connected by USB interface between described change-over panel and the described microprocessor.
Described stabilivolt V1 is triode UR133-AB3-B.
The described change-over panel that is used for intelligent piano also is provided with keyboard signal input port, pedal signal input port, midi signal output interface, USB-MIDI signal output and power supply input port; Described keyboard signal input port and described keyboard splicing ear CN1, keyboard splicing ear CN2 are electrically connected; Described pedal signal input port and described pedal splicing ear CN3 are electrically connected; Described midi signal output interface and described splicing ear MIDI are electrically connected; USB-MIDI signal output and described chip USB are electrically connected; Described power supply input port and socket POW are electrically connected.
Used the intelligent piano of change-over panel of the present utility model, played, electrical signal conversion has been become midi signal, midi signal has been delivered to external interface respectively as the output midi signal by the MIDI change-over panel by the MIDI change-over panel by the emulation fingerboard; Other one road midi signal inserts the microcontroller that is positioned in the master control board, sends midi signal to microcontroller.External in addition tenuto pedal is connected to midi signal by the outside, is connected on the MIDI change-over panel.By midi interface, make change-over panel to communicate with other external smart machines, export playing information to external other intelligent equipments.Equipment such as microprocessor and power amplifier chip and external memory storage all are arranged in the master control board, and described master control board is installed within the body of piano.
Used in the master control board of intelligent piano of change-over panel of the present utility model and stored bank (tone color), the firmware FIRMWARE of independent research with world's name qin.Various exercise mode and software about piano study) a plurality of USB outputs are arranged, audio frequency output, video is exported, the netting twine interface.There are the signal and the outputting video signal that insert from the touch-screen of outside to give exterior display screen in the master control board.Audio frequency in the master control board is exported to two audio amplifiers (being divided into left and right sound channels) of qin body, also exporting two-way one tunnel (has the earphone enlarging function for the earphone output 3.5mm earphone jack 11 on product keyboard 4 the right, the jack diameter is 3.5mm), the one tunnel exports to qin body rear portion 6.5mm earphone jack (6 jack diameters are 6.5mm) external output signal.Body is provided with interface 8, switch 9 and the volume adjustment hole 10 of MIDI OUT interface 7 (being used for the output of midi signal), Sustain.
The independent research software section can be played in real time by keyboard, transfers built-in piano sound, can reach minimum 20 milliseconds/note; Can import standard MIDI music-book on pianoforte, can automatic playing, in exercise mode, on the music score in the screen, top-stitching is followed to play and is carried out sometimes, and timeline is set the beat flicker with melody, does not down continue as playing the wrong time line.Screen below shows 88 key boards, and the position that need play certain key has blue some prompting on the keyboard below the screen, if play wrongly, can show red on the keyboard of screen below.
As Fig. 7 is circuit hardware connection diagram on the piano.Described power amplifier chip, microprocessor and change-over panel can be integrated on the circuit board, also can place respectively on a plurality of circuit boards.Midi interface, volume by-pass cock, loudspeaker and earphone jack etc. are distributed in respectively on the body, are electrically connected with master control board by lead respectively.Change-over panel is connected with pedal with key by the mode that is electrically connected, and is used to detect the action of key and pedal, is pressed to judge which key whether pedal be operated with.
Fig. 8 is the piano of two kinds of different profiles with Fig. 9, and its display screen is arranged at different positions.When not having cover plate display screen is located at the body upper surface and gets final product, body is provided with groove to take in display screen.When cover plate is arranged display screen is located at the inside surface of cover plate, is put cover plate and cover following time, display screen is also packed up.
Figure 10 is the vertical view of the body of piano, has marked the position of each IO interface and volume by-pass cock on the figure.
Figure 11 is the ARM platform structure figure when adopting ARM as microcontroller.The built-in bank of arm processor, and be provided with AUDIO interface, USB interface, HDMI interface and LAN interface.
Figure 12 is microprocessor circuit figure, and microprocessor is selected microchip band usb microcontroller PIC18F65J50, has 32KB FLASH ROM and 3094B SRAM.Single-chip microcomputer is by control Sustain testing circuit and keyboard scanning circuit, arranges key, the state of each keyboard of discriminatory analysis, the dynamics that the calculating keyboard is pressed after scan 88 front-seat keys and 88.Send data to USB device by USB interface, send the MIDI protocol data to MIDI equipment, realized that 88 buttons of pianotron convert the function of USB and MIDI data to by TX2.
Figure 13 comprises resistance R 48～51, resistance R 54, LED 1～LED3, capacitor C 10, electric capacity 17, keyswitch SW2～SW3 for LED shows and key circuit, is used to export display message to display screen, and can detect the operation information of external key.Operating personnel can give master control board by the external key input control order.During concrete enforcement, button can be arranged on the body.Three various states of diode displaying of LED1, LED2 and LED3.SW2 and SW3 button selectively operating pattern and function setting.
Used the intelligent piano of change-over panel of the present utility model, can realize fabulous compatibility to various sample formats, this also is based on the scalability feature that the ESMMP platform extends out, be convenient to the upgrading of product, improved the intelligent level of piano, make the user can learn and grasp knowledge such as music theory, piano performance more intuitively, has the high degree of intelligence level, solved piano cross the threshold difficult, music theory knowledge problem such as can visually learn, in exercise, in time can correct a mistake.
Used the intelligent piano of change-over panel of the present utility model, screen is by can further distance with the user of interactive screen significantly, screen itself can show music score, reach corresponding position on fingerboard, the microcontroller of built-in two-forty running in the screen qin body, microcontroller carries out rapidly computing to any instruction that the user sent, note and instant the handling of various signal that the player is played, and send corresponding sound accurately, be apparent in the various information that occur corresponding note on the screen simultaneously.By network interface, can will adopt state-of-the-art high in the clouds technology to provide the melody storehouse of style to one's name to the user, arm processor is connected with the high in the clouds server is wired or wireless.Having under the situation of network, can be anywhere or anytime recover own Qu Ku from our high in the clouds and download own need melody, like this with regard to the embarrassment that can not occur can't playing owing to leaving behind music score.
Use the intelligent piano of change-over panel of the present utility model to preset two kinds of patterns, be divided into exercise mode and performance pattern.We enter after the exercise mode, and the user plays according to the note on the music score, play correct note and can down carry out, and our built-in metronome standard rhythm is arranged simultaneously, if performance is incorrect, music score does not down carry out.Enter in the performance pattern, can be when user's performance be finished, through the computing of core, for accuracy in pitch, rhythm, aspects such as mood are instant provides a mark, if any inaccurate place, point out out inaccurate place again on the screen simultaneously, and can carry out the demonstration performance of melody at any time, allow the user that unfamiliar melody is had impression more accurately, be convenient to the requirement study of user according to oneself.
Used the intelligent piano of change-over panel of the present utility model, employing is based on FGA25N120 symmetrical half bridge formula power converter and adopt arm processor as the numerical control core, but at the special teaching software of microprocessor stored.Can show music score and trigger default cartoon teaching software by tangible screen, advance stepwise study for aspects such as music theory, piano performances.The learner need not training organization and can learn by oneself, and can decide the time point and the time length of study in its sole discretion, has solved the problem that is subjected to place and time restriction when learning in training organization, has reduced the cost of study.Simultaneously by advanced technology, the vivid animation element of combination, to the knowledge point of music, the piano knowledge such as contraposition of note on 88 piano keies on the staff, analyze and reasonably arrangement, make the user can learn and grasp knowledge such as music theory, piano performance more intuitively, solved piano cross the threshold difficult, music theory knowledge problem such as can visually learn, in exercise, in time can correct a mistake.
Claims (3)
1. a change-over panel that is used for intelligent piano is characterized in that, comprises power circuit, usb circuit, midi interface circuit, Sustain testing circuit and keyboard scanning circuit;
Described power circuit comprises fuse L1～L2, diode D1～D3, capacitor C 1, capacitor C 2, capacitor C 6, electric capacity E1, electric capacity E2, resistance R 1, power switch SW1, stabilivolt V1 and socket POW;
Described usb circuit comprises chip USB, fuse L3～L6, capacitor C 3, capacitor C 7, resistance R 29, resistance R 33, resistance R 34 and resistance R 36;
Described midi interface circuit comprises splicing ear MIDI, fuse L7～L11, capacitor C 8, resistance R 39, resistance R 41 and resistance R 44;
Described Sustain testing circuit comprises pedal splicing ear CN3, fuse L12～L13, capacitor C 4 and resistance R 47; Wherein, an end of described capacitor C 4 is connected between fuse L12 and the resistance R 47, and tie point is RA5;
Described keyboard scanning circuit comprises keyboard splicing ear CN1, keyboard splicing ear CN2, resistance R 2～R28, resistance R 30～R32, resistance R 35, resistance R 37～R38, resistance R 40, resistance R 42～R43, resistance R 45～R46.
2. the change-over panel that is used for intelligent piano according to claim 1 is characterized in that, described stabilivolt V1 is triode UR133-AB3-B.
3. the change-over panel that is used for intelligent piano according to claim 1 is characterized in that, also is provided with keyboard signal input port, pedal signal input port, midi signal output interface, USB-MIDI signal output and power supply input port; Described keyboard signal input port and described keyboard splicing ear CN1, keyboard splicing ear CN2 are electrically connected; Described pedal signal input port and described pedal splicing ear CN3 are electrically connected; Described midi signal output interface and described splicing ear MIDI are electrically connected; USB-MIDI signal output and described chip USB are electrically connected; Described power supply input port and socket POW are electrically connected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220733741 CN203102846U (en) | 2012-12-28 | 2012-12-28 | Conversion plate for intelligent piano |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220733741 CN203102846U (en) | 2012-12-28 | 2012-12-28 | Conversion plate for intelligent piano |
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| CN203102846U true CN203102846U (en) | 2013-07-31 |
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| CN 201220733741 Expired - Fee Related CN203102846U (en) | 2012-12-28 | 2012-12-28 | Conversion plate for intelligent piano |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103903603A (en) * | 2012-12-28 | 2014-07-02 | 熊世林 | Converter plate used for intelligent piano |
| CN103943094A (en) * | 2014-05-16 | 2014-07-23 | 刘宝璋 | Piano |
| CN104078032A (en) * | 2014-06-13 | 2014-10-01 | 叶滨 | Note prompt method, system and mobile terminal for electrical piano and electrical piano |
-
2012
- 2012-12-28 CN CN 201220733741 patent/CN203102846U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103903603A (en) * | 2012-12-28 | 2014-07-02 | 熊世林 | Converter plate used for intelligent piano |
| CN103943094A (en) * | 2014-05-16 | 2014-07-23 | 刘宝璋 | Piano |
| CN104078032A (en) * | 2014-06-13 | 2014-10-01 | 叶滨 | Note prompt method, system and mobile terminal for electrical piano and electrical piano |
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