CN108962203A - A kind of piano pressure spline auxiliary teaching device and its application method - Google Patents
A kind of piano pressure spline auxiliary teaching device and its application method Download PDFInfo
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- CN108962203A CN108962203A CN201811018050.7A CN201811018050A CN108962203A CN 108962203 A CN108962203 A CN 108962203A CN 201811018050 A CN201811018050 A CN 201811018050A CN 108962203 A CN108962203 A CN 108962203A
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- 230000033764 rhythmic process Effects 0.000 claims description 12
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- 238000007689 inspection Methods 0.000 description 6
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/0008—Associated control or indicating means
- G10H1/0016—Means for indicating which keys, frets or strings are to be actuated, e.g. using lights or leds
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B15/00—Teaching music
- G09B15/08—Practice keyboards
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/32—Constructional details
- G10H1/34—Switch arrangements, e.g. keyboards or mechanical switches specially adapted for electrophonic musical instruments
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- Educational Technology (AREA)
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Abstract
The present invention relates to a kind of piano pressure spline auxiliary teaching device and its application methods, including pressing spline ontology, bottom PCB circuit board, top layer PCB circuit board, black key detection device and white key detection device, pressure spline ontology is additionally provided with glass wedged groove, top layer PCB card slot and bottom PCB card slot, the top layer PCB card slot is for placing top layer PCB circuit board, the bottom PCB card slot is for placing bottom PCB circuit board, the glass wedged groove is arranged in parallel with the top layer PCB card slot, and it is arranged above the top layer PCB card slot, the glass wedged groove is used to place transparent glass and shows the light of LED.The present invention can easily realize that traditional piano is intelligent, that is, not need external auxiliary teaching device, also do not need complicated dismounting keyboard and install this device.It only needs to replace pressure spline, it will be able to make traditional piano that can retain the beautiful timbre and communicate with each other with electronic equipment that traditional piano machinery occurs, the traditional piano of realization is merged with electronic equipment.
Description
Technical field
The present invention relates to teaching auxiliary device field more particularly to a kind of piano pressure spline auxiliary teaching device and its uses
Method.
Background technique
In order to solve the problems, such as that traditional piano is intelligentized, the tone color of such as mechanical sounding cannot be converted into electronic signal, directly
It interconnects and communicates with electronic equipments such as pad, phone, learning software App cannot be used to assist practicing qin, cause qin difficulty high, study
Interest reduces, and learning efficiency is low.
And the auxiliary device of some traditional pianos is placed on fingerboard, and no and piano combines together, it is easy to move,
Also the beauty of piano entirety is affected.
There are also some devices to be placed in below fingerboard, needs to dismantle fingerboard, destroys the original tone color of piano,
Assembling is complicated, and the tuner of profession is needed to rectify sound etc..
Scheme one: teaching auxiliary device currently on the market is placed on fingerboard mostly.The device is placed in piano
On keyboard, no and piano combines together, influences beauty.And occupancy keyboard tip length 15mm or so is even more, height is about
10mm or so is even more.Working principle: when piano, with the state of infrared photoelectric sensor acquisition keyboard, piano is white
Key is with reflective infrared photoelectric sensor sample, and piano black key is with the sampling of correlation infrared photoelectric sensor.By the keyboard of acquisition
State transfer drives corresponding led according to the position of keyboard to mcu, mcu.Led and keyboard correspond, and mcu is used
GPIO mouthfuls of driving led.
The shortcomings that above-mentioned technical proposal, is:
The device is placed on fingerboard, and no and piano combines together, influences beauty, and occupy keyboard tip length
15mm or so is even more, and height about 10mm or so is even more.
Scheme two: also having part currently on the market is that teaching auxiliary device is embedded in inside piano, is placed in piano
Below key.When piano, with the state of infrared photoelectric sensor acquisition keyboard, white key is with reflective sampling, and black key is with right
Penetrate formula sampling.The keyboard state of acquisition is transferred to mcu, mcu drives corresponding led according to the position of keyboard.
The disadvantages of this solution has:
1, mainboard sensor is placed in below keyboard, and lamp bar is placed in shell.Installation is complicated, needs to dismantle keyboard, pacifies again
Professional person is just needed to carry out tuner debugging when filling keyboard.
2, piano is destroyed, needs to punch installation etc. on piano upper box, is unfavorable for after-sales service etc..
The shell of piano includes top cover, visits, pedestal of visiting, cover of keyboard, pressure spline etc..
These shells play the role of keeping attractive appearance in support and protection piano.These shells are not related to sound
Ring sonification system.Wherein pressure spline is generally used for the logo of display piano producer, and blocks components on the inside of keyboard.The peace of shell
It is simple to fill step.Successively erection sequence is pressure spline, pedestal of visiting, visits, top cover.Applicants have found that in pressure key
White key has 5mm mirror surface still for acquiring white key reflectance data below item.Based on this, applicant develops a kind of device can
Traditional piano is circulated, solves problem above.Infrared photoelectric sensor and LED lamp are all placed in pressure spline, can be applicable in
In all 88 key tradition pianos, it is only necessary to use this device, can easily realize intelligence.And disassembly keyboard is not needed, only more
Change pressure spline.
The following are this application involves SPI, ADC, GPIO, UART brief explanation:
SPI is the abbreviation of Serial Peripheral Interface (SPI) (Serial Peripheral Interface).
ADC is the abbreviation of A/D converter (Analog-to-Digital Converter).
GPIO is the abbreviation (universal input/output) of bus extender (General Purpose Input Output).
UART is universal asynchronous receiving-transmitting transmitter (Universal Asynchronous Receiver/Transmitter)
Abbreviation.
MIDI (Musical Instrument Digital Interface) musical instrument digital interface, is the 1980s
Just proposed to solve the communication issue between electrophonic musical instrument.MIDI is the widest music standards format of music circle, can be claimed
For " music score that computer capacity understands ".It records music with the digital controlled signal of note.One first complete MIDI music is only
There are tens KB big, and can include tens of music tracks.Almost all of contemporary music is all to be made with MIDI plus bank
What work synthesized.The not instead of voice signal of MIDI transmission, the instruction such as note, control parameter, it is assorted that it indicates that MIDI equipment will be done
, how to do, such as which note, much volumes played.They are by unified representation at MIDI message (MIDI Message).It passes
Asynchronous serial communication is used when defeated, standard traffic baud rate is 31.25 × (1 ± 0.01) KBaud.
Summary of the invention
To the problems of the prior art, the present invention provides a kind of piano pressure spline auxiliary teaching device and its application method,
It can easily realize that traditional piano is intelligent.External auxiliary teaching device is not needed, does not need complicated dismounting keyboard peace yet
Fill this device.
In order to solve the above problem, solution of the invention is a kind of piano pressure spline auxiliary teaching device, including pressure key
Ontology, further includes bottom PCB circuit board, top layer PCB circuit board, black key detection device and white key detection device, piano have 88
A keyboard, including 52 white keys and 36 black keys, the black key detection device are 36, and are corresponded with 36 black keys, institute
Stating white key detection device is 52, and is corresponded with 52 white keys；
The black key detection device includes an infrared photo-emitter and an infrared electro receiver, the white key inspection
Surveying device includes reflective infrared photoelectric detection sensor, and the black key detection device and white key detection device are mounted on bottom
In PCB circuit board, the bottom PCB circuit board is connect with the top layer PCB circuit board, is arranged in the top layer PCB circuit board
There is LED light for showing whether keyboard is pressed.
The pressure spline body central offers through slot, and pressure spline ontology front offers 36 piano black key inspections
Gaging hole, corresponding 1 piano black key of each piano black key detection hole, pressure spline body bottom portion front end offers the inspection of piano white key
Survey slot；
Glass wedged groove, top layer PCB card slot and bottom PCB card slot, the top are additionally provided on the piano pressure spline ontology
Layer PCB card slot is for placing top layer PCB circuit board, and the bottom PCB card slot is for placing bottom PCB circuit board, the bottom
The bottom PCB circuit board placed in PCB card slot is for detecting fingerboard movement, the top layer placed in the top layer PCB card slot
LED light is provided in PCB circuit board, the LED light and keyboard correspond, the top layer PCB placed in the top layer PCB card slot
Circuit board passes through the LED light being disposed thereon and shows whether fingerboard is pressed, the glass wedged groove and the top layer PCB card slot
It is arranged in parallel, and is arranged above the top layer PCB card slot, the glass wedged groove is for placing transparent glass and showing LED's
Light.
As an improvement, the bottom PCB card slot is horizontally set on the corresponding position of left and right trough rim of through slot, bottom
PCB card slot is for placing bottom PCB circuit board, since the black key detection device is mounted in bottom PCB circuit board, black key inspection
Surveying device is the position for occupying keyboard black key end, vertical keyboard (the i.e. circuit board level of correlation infrared electro detection sensor
Place) when occupy black key 10mm, black key position is occupied when inclination will increase, thus bottom PCB circuit board need it is horizontal positioned, i.e.,
Bottom PCB card slot need to be horizontally arranged.
As a further improvement, a left side for the glass wedged groove and the dip-parallel setting through slot of the top layer PCB card slot
On right two trough rims, left trough rim is lower than right trough rim, and inclination angle is 15-40 degree.The glass wedged groove and the top layer PCB card slot
Spacing is within 3mm.Led need could obtain within glass planar 3mm clearly, the aperture that is of moderate size.
As a further improvement, the pressure spline ontology back bottom is inclined-plane, the oblique angle on the back bottom inclined-plane
For 45-75 degree.Pressure spline is encountered when can be avoided the pole tilting at rear when keyboard is pressed.
As a further improvement, the bottom PCB circuit board includes one piece of motherboard and seven the first daughter boards, the top layer
PCB circuit board includes second daughter board and three third daughter boards, and 1 black key detection device is arranged on the motherboard and 3 white
Key detection device, first daughter board are provided with 5 black key detection devices and 7 white key detection devices.
As a further improvement, it is provided with main MCU on the motherboard, USB female seat, wired or wireless transmission module, one
A single connector and 1 FPC connector are provided with sub- MCU, two single connectors on first daughter board.
As a further improvement, be provided on second daughter board LED drive chip, LED light, 1 FPC connector and
1 double connector, the second daughter board LED light totally 16 groups of 32 LED light can combine for red green two groups or other colors；
As a further improvement, LED drive chip, LED light and 2 double connections are provided on the third daughter board
Device, the third daughter board LED light totally 24 groups of 48 LED light can combine for red green two groups or other colors.
As a further improvement, the motherboard is connect by SPI with the second daughter board, and the motherboard passes through SPI and three
Third daughter board is sequentially connected, and the main MCU on the motherboard is sequentially connected by the sub- MCU of UART and seven first daughter boards.
As a further improvement, the white key detection device is acquired data, the black key inspection to white key by ADC
It surveys device and data is acquired to black key by GPIO.
As a further improvement, piano pressure spline auxiliary teaching device further include be equipped with software APP PAD or
PHONE, the software APP are provided with error correction mode music score of Chinese operas interface, bootmode music score of Chinese operas interface and identification of spectrogram mode music score of Chinese operas interface, institute
It states and is both provided with vernier in music score of Chinese operas note on error correction mode music score of Chinese operas interface, bootmode music score of Chinese operas interface and identification of spectrogram mode music score of Chinese operas interface
On, it presses and is additionally provided with one layer of green frame on bootmode music score of Chinese operas interface described in corresponding key and identification of spectrogram mode music score of Chinese operas interface and covers
It covers on note.
A kind of application method of piano pressure spline auxiliary teaching device is filled using above-mentioned piano pressure spline aided education
It sets, specifically includes:
Step 1: being powered at USB female seat, motherboard, seven the first daughter boards, the second daughter board and three third daughter boards are connected, this
Shi Baijian detection device is acquired data record white key initial state value to 52 white keys by ADC, and black key detection device is logical
It crosses GPIO and data is acquired to 36 black keys, when black key original state, pass through the state of physics shadowing black key；It is described black
Key detection device includes an infrared photo-emitter and an infrared electro receiver, and the white key detection device includes reflection
Formula infrared electro detection sensor；
It is connect Step 2: opening wired or wireless transmission module with the software APP of PAD or PHONE, top layer PCB circuit board
Two-way data transmission and reception are carried out with bottom PCB circuit board and software APP；
Step 3: opening the error correction mode music score of Chinese operas interface of software APP, note of the error correction mode music score of Chinese operas interface in the music score of Chinese operas
On there is vernier to show, and the vernier is moved on the note of the music score of Chinese operas by the time set, it is described set when
Between for the rhythm in the music score of Chinese operas, different music score of Chinese operas rhythm is different；
When pressing white key, white key detection device acquires the state value of white key by ADC, with white key initial shape in step 1
State value is compared, if difference is greater than threshold values in main MCU and sub- MCU program, is judged as down state；If difference is less than master
Threshold values in MCU and sub- MCU program, then be judged as lifting status；The threshold values is a preset numerical value, which is white
Initial state value of key detection device detection piano white key when not being pressed and be pressed sounding when state value between take
One numerical value；
When pressing black key, blocked among infrared photo-emitter and infrared electro receiver without physics, main MCU and son
MCU acquires the signal of black key by GPIO, is judged as down state；When black key lifts, infrared photo-emitter and infrared light
There is physics to block among electric receiver, main MCU and sub- MCU are judged as lifting status by the signal of GPIO acquisition black key；
Main MCU summarizes the keyboard signal collected, and controls LED drive chip by SPI, and transference keyboard one is a pair of
The LED light answered lights；
Main MCU is transmitted the keyboard state signal of acquisition with the midi data of 16 systems by wired or wireless transmission module
The midi data that 10 systems are converted into after the midi data of 16 systems are received to PAD or PHONE software APP, software APP, then
It is compared with the midi data by parsing 10 system of standard that music score of Chinese operas xml document obtains, comparison is divided into time and accuracy in pitch two
A dimension, if it is exactly rhythm mistake that time dimension is problematic, if it is exactly accuracy in pitch mistake that accuracy in pitch dimension is problematic, if all do not had
Problematic is exactly correct；
Software APP can mark out the note of mistake and type (the rhythm mistake of mistake on error correction mode music score of Chinese operas interface
Or accuracy in pitch mistake), at the end of the entire music score of Chinese operas, APP will pop up corresponding report, informs the specific error situation of user, entangles at this time
Mismatch formula terminates, and software APP will not carry out data receiver again at this time；
Step 4: opening the bootmode music score of Chinese operas interface of software APP, note of the bootmode music score of Chinese operas interface in the music score of Chinese operas
On there is vernier to show, press after corresponding key that corresponding note can be capped one layer on software APP bootmode music score of Chinese operas interface
Green frame, note and keyboard in the upper software APP music score of Chinese operas of PAD/PHONE correspond；
Software APP is converted into the music score of Chinese operas note that vernier covers 16 system midi data of corresponding standard, by wired
Or wireless transport module is transferred to main MCU, main MCU controls LED drive chip driving and keyboard one by one after receiving midi data
Corresponding LED light lights；
After user presses corresponding key according to the LED light instruction lighted, keyboard that main MCU or sub- MCU are collected
The keyboard state signal of acquisition is transferred to by signal, main MCU by wired or wireless transmission module with the midi data of 16 systems
Pad/phone software APP, software APP receive the midi data that 10 systems are converted into after the midi data of 16 systems, then with song
The 10 system midi data that spectrum note converts corresponding standard compare, if comparison is correct, the software APP bootmode music score of Chinese operas
Corresponding note can be capped one layer of green frame on interface, while send instruction of turning off the light by the transmission of wired or wireless transmission module
To main MCU, main MCU can control LED drive chip driving after receiving the data and knock out with the one-to-one LED light of keyboard；
After the music score of Chinese operas note of vernier covering is correctly pressed, vernier can jump to next note, while can be trip
The note of mark covering is converted into midi data and is transferred to main MCU, successively carries out terminating until the entire music score of Chinese operas, soft at the end of the music score of Chinese operas
Part APP will not carry out midi data receiver again；
Step 5: opening the identification of spectrogram mode music score of Chinese operas interface of software APP, note of the identification of spectrogram mode music score of Chinese operas interface in the music score of Chinese operas
On there is vernier to show, one layer of green can be capped by pressing software APP identification of spectrogram mode music score of Chinese operas interface after corresponding key and corresponding to note
Frame, note and keyboard in the upper software APP music score of Chinese operas of PAD/PHONE correspond；
When pressing white key, white key detection device acquires the state value of white key by ADC, with white key initial shape in step 1
State value is compared, if difference is greater than threshold values in main MCU and sub- MCU program, is judged as down state；If difference is less than master
Threshold values in MCU program, then be judged as lifting status；The threshold values is a preset numerical value, which is white key detection
Initial state value of device detection piano white key when not being pressed and be pressed sounding when state value between take in a number
Value；
When pressing black key, blocked among infrared photo-emitter and infrared electro receiver without physics, main MCU and son
MCU acquires the signal of black key by GPIO, is judged as down state；When black key lifts, infrared photo-emitter and infrared light
There is physics to block among electric receiver, main MCU and sub- MCU are judged as lifting status by the signal of GPIO acquisition black key；
Main MCU summarizes the keyboard signal collected, and main MCU is by wired or wireless transmission module by the keyboard of acquisition
Status signal is transferred to pad/phone software APP with the midi data of 16 systems, and software APP receives the midi data of 16 systems
Be converted into the midi data of 10 systems afterwards, then with the midi data of 10 system of standard that are obtained by parsing music score of Chinese operas xml document
It compares；
If comparison is correct, software APP identification of spectrogram mode music score of Chinese operas interface, which corresponds to note, can be capped one layer of green frame, work as vernier
After the note of covering is correctly pressed, vernier can jump to next note and receive next push button signalling, then be compared,
Successively carry out；
If comparison is incorrect, the vernier at software APP identification of spectrogram mode music score of Chinese operas interface if, is parked at this note, until playing
Correct key, can just jump to next note, repeat this movement, until the entire music score of Chinese operas terminates, the software APP at the end of the music score of Chinese operas
Data receiver will not be carried out again.
From the above, it can be seen that the invention has the following advantages that only needing to replace pressure spline, it will be able to make traditional steel
Qin can retain the beautiful timbre and communicate with each other with electronic equipment that traditional piano machinery occurs, and realize traditional piano and electricity
The fusion of sub- equipment.The device, which occupies black key end distance, can be decreased to 10mm.Within glass planar distance led 3mm, energy
The aperture for enough showing that led is clear, being of moderate size.The oblique angle on back bottom inclined-plane be 45-75 degree, can be avoided when keyboard is pressed by
The pole of key encounters pressure spline when tilting.
Detailed description of the invention
Fig. 1 is the schematic diagram that the device of the invention is mounted on piano；
Fig. 2 is the structural schematic diagram of pressure spline ontology of the invention；
Fig. 3 is the present invention pressure positive partial structural diagram of spline ontology；
Fig. 4 is the partial structural diagram of present invention pressure spline body bottom portion front end；
Fig. 5 is the right view 1 of present invention pressure spline ontology；
Fig. 6 is the partial structural diagram at the present invention pressure spline ontology back side；
Fig. 7 is the right view 2 of present invention pressure spline ontology；
Fig. 8 is the design schematic diagram of top layer PCB circuit board and bottom PCB circuit board of the present invention；
Fig. 9 is the conceptual schematic drawing of top layer PCB circuit board and bottom PCB circuit board of the present invention；
Figure 10 is PCB circuit board TOP layers of explosive view of the present invention；
Figure 11 is PCB circuit board BOTTOM layers of explosive view of the present invention；
Figure 12 is the detection process schematic diagram of white key detection device of the present invention；
Figure 13 is the detection process schematic diagram of black key detection device of the present invention；
Appended drawing reference: 1, pressure spline ontology, 2, through slot, 3, black key detection hole, 4, white key detection slot, 5, glass wedged groove,
6, top layer PCB card slot, 7, bottom PCB card slot, 8, the hole USB, 9, communicating hole, 20, connecting hole, 101, front, 102, bottom front,
103, back bottom, 104, the back side, 201, left trough rim, 202, right trough rim；
10, motherboard, the 11, first daughter board, the 12, second daughter board, 13, third daughter board, 14, black key detection device, 15, white key inspection
Survey device, 16, main MCU, 17, USB female seat, 18, wired or wireless transmission module, 19, single connector, 20, FPC connector,
21, double connector, 22, LED drive chip, 23, LED light, 24, sub- MCU, 11X7, seven the first daughter boards, 13X3, three
Three daughter boards, 141, infrared photo-emitter, 142, infrared electro receiver, 151, reflective infrared photoelectric detection sensor.
Specific embodiment
In conjunction with Fig. 1-Figure 13, first specific embodiment that the present invention will be described in detail, but not to claim of the invention
Do any restriction.
As shown in Fig. 1-Figure 13, a kind of piano pressure spline auxiliary teaching device, a kind of piano pressure spline auxiliary teaching device,
It further include bottom PCB circuit board, top layer PCB circuit board, black key detection device 14 and white key detection dress including pressing spline ontology 1
Set 15, piano has 88 keyboards, including 52 white keys and 36 black keys, and the black key detection device 14 is 36, and with 36
Black key corresponds, and the white key detection device 15 is 52, and corresponds with 52 white keys；
The black key detection device 14 includes an infrared photo-emitter 141 and an infrared electro receiver 142, institute
Stating white key detection device 15 includes reflective infrared photoelectric detection sensor 151, the black key detection device 14 and white key detection
Device 15 is mounted in bottom PCB circuit board, and the bottom PCB circuit board is connect with the top layer PCB circuit board, the top layer
LED light is provided in PCB circuit board for showing whether keyboard is pressed.
1 center of pressure spline ontology offers through slot 2, and 1 front 101 of pressure spline ontology offers 36 pianos
Black key detection hole 3, corresponding 1 piano black key of each piano black key detection hole 3,1 bottom front 102 of pressure spline ontology open up
There is piano white key detection slot 4；
1 is additionally provided with glass wedged groove 5, top layer PCB card slot 6 and bottom PCB card slot 7, institute on the piano pressure spline ontology
Top layer PCB card slot 6 is stated for placing top layer PCB circuit board, the bottom PCB card slot 7 is for placing bottom PCB circuit board, institute
The bottom PCB circuit board placed in bottom PCB card slot 7 is stated for detecting fingerboard movement, is put in the top layer PCB card slot 6
LED light is provided in the top layer PCB circuit board set, the LED light and keyboard are corresponded, placed in the top layer PCB card slot 6
Top layer PCB circuit board pass through the LED light that is disposed thereon and show whether fingerboard is pressed, the glass wedged groove 5 with it is described
Top layer PCB card slot 6 is arranged in parallel, and is arranged above the top layer PCB card slot 6, and the glass wedged groove 5 is for placing transparent glass
Glass and the light for showing LED.
More specifically, the bottom PCB card slot 7 is horizontally set on the corresponding position of left and right trough rim of through slot 2.
More specifically, the left and right two of the glass wedged groove 5 and the dip-parallel setting through slot 2 of the top layer PCB card slot 6
On trough rim, left trough rim 201 is lower than right trough rim 202, and inclination angle is 15-40 degree, this example is 18 °.
More specifically, the spacing of the glass wedged groove 5 and the top layer PCB card slot 6 is within 3mm.This example is
2.5mm。
More specifically, 1 back bottom 103 of pressure spline ontology is inclined-plane, the oblique angle on the back bottom inclined-plane is 45-
75 degree, this example is 60 °.
More specifically, the bottom PCB circuit board includes one piece of motherboard 10 and seven the first daughter boards 11, the top layer PCB
Circuit board includes second daughter board 12 and three third daughter boards 13, is provided with 1 black key detection device 14 on the motherboard 10
With 3 white key detection devices 15, first daughter board 11 is provided with 5 black key detection device 14 and 7 white key detection devices 15.
More specifically, main MCU16 is provided on the motherboard 10, and USB female seat 17, wired or wireless transmission module 18, one
A single connector 19 and 1 FPC connector 20 is provided with sub- MCU24, two single connectors on first daughter board 11
19。
More specifically, being provided with 23,1 LED drive chip 22, LED light 20 and of FPC connector on second daughter board 12
1 double connector 21, totally 16 groups of 32 LED light, the present embodiment are red green group and are combined into 1 group the second daughter board 12LED lamp, altogether
16 groups of 32 LED light.
More specifically, being provided with LED drive chip 22, the double connector of LED light 23 and 2 on the third daughter board 13
21, totally 24 groups of 48 LED light, the present embodiment are red green group and are combined into 1 group the third daughter board 13LED lamp, totally 24 groups of 48 LED
Lamp.
More specifically, the motherboard 10 is connect by SPI with the second daughter board 12, the motherboard 10 passes through SPI and three the
Three daughter boards 13 are sequentially connected, and the main MCU on the motherboard 10 is successively connected by the sub- MCU of UART and seven first daughter boards 11
It connects.
More specifically, the white key detection device 15 is acquired data, the black key detection device to white key by ADC
14 are acquired data to black key by GPIO.
A kind of application method of piano pressure spline auxiliary teaching device is filled using above-mentioned piano pressure spline aided education
It sets, specifically includes:
Step 1: be powered at USB female seat 17,10, seven the first daughter boards 11 of motherboard, the second daughter board 12 and three third daughter boards
13 connect, and white key detection device 15 is acquired data record white key initial state value, black key to 52 white keys by ADC at this time
Detection device 14 is acquired data to 36 black keys by GPIO, when black key original state, passes through physics shadowing black key
State；The black key detection device 14 includes an infrared photo-emitter 141 and an infrared electro receiver 142, institute
Stating white key detection device 15 includes reflective infrared photoelectric detection sensor 151；
It is connect Step 2: opening wired or wireless transmission module 18 with the software APP of PAD or PHONE, top layer PCB circuit
Plate and bottom PCB circuit board and software APP carry out two-way data transmission and reception；
Step 3: opening the error correction mode music score of Chinese operas interface of software APP, note of the error correction mode music score of Chinese operas interface in the music score of Chinese operas
On there is vernier to show, and the vernier is moved on the note of the music score of Chinese operas by the time set, it is described set when
Between for the rhythm in the music score of Chinese operas, different music score of Chinese operas rhythm is different；
When pressing white key, white key detection device 15 acquires the state value of white key by ADC, initial with white key in step 1
State value is compared, if difference is greater than threshold values in main MCU16 and sub- MCU24 program, is judged as down state；If difference is small
The threshold values in main MCU16 and sub- MCU24 program, then be judged as lifting status；The threshold values is a preset numerical value, should
Numerical value be white key detection device 15 detect initial state value of piano white key when not being pressed and be pressed sounding when state value
Between take in a numerical value；
When pressing black key, blocked among infrared photo-emitter 141 and infrared electro receiver 142 without physics, it is main
MCU16 and sub- MCU24 acquires the signal of black key by GPIO, is judged as down state；When black key lifts, infrared electro transmitting
There is physics to block among device 141 and infrared electro receiver 142, the letter that main MCU16 and sub- MCU24 pass through GPIO acquisition black key
Number, it is judged as lifting status；
Main MCU16 summarizes the keyboard signal collected, and controls LED drive chip 22 by SPI, conveys keyboard one
One corresponding LED light 23 lights；
Main MCU16 is by wired or wireless transmission module 18 by the keyboard state signal of acquisition with the midi data of 16 systems
It is transferred to PAD or PHONE software APP, software APP receives the midi data that 10 systems are converted into after the midi data of 16 systems,
Then it is compared with the midi data by parsing 10 system of standard that music score of Chinese operas xml document obtains, comparison is divided into time and sound
Quasi- two dimensions, if it is exactly rhythm mistake that time dimension is problematic, if it is exactly accuracy in pitch mistake that accuracy in pitch dimension is problematic, if
It is exactly correct that all there is no problem；
Software APP can mark out the note of mistake and type (the rhythm mistake of mistake on error correction mode music score of Chinese operas interface
Or accuracy in pitch mistake), at the end of the entire music score of Chinese operas, APP will pop up corresponding report, informs the specific error situation of user, entangles at this time
Mismatch formula terminates, and software APP will not carry out data receiver again at this time；
Step 4: opening the bootmode music score of Chinese operas interface of software APP, note of the bootmode music score of Chinese operas interface in the music score of Chinese operas
On there is vernier to show, press after corresponding key that corresponding note can be capped one layer on software APP bootmode music score of Chinese operas interface
Green frame, note and keyboard in the upper software APP music score of Chinese operas of PAD/PHONE correspond；
Software APP is converted into the music score of Chinese operas note that vernier covers 16 system midi data of corresponding standard, by wired
Or wireless transport module 18 is transferred to main MCU16, main MCU16 controlled after receiving midi data the driving of LED drive chip 22 with
The one-to-one LED light 23 of keyboard lights；
After user presses corresponding key according to the instruction of LED light 23 lighted, main MCU16 or sub- MCU24 are collected
Keyboard signal, main MCU16 is by wired or wireless transmission module 18 by the keyboard state signal of acquisition with the midi of 16 systems
Data are transferred to pad/phone software APP, and software APP receives the midi number that 10 systems are converted into after the midi data of 16 systems
According to, the 10 system midi data that corresponding standard is then converted with music score of Chinese operas note compare, if comparison is correct, software APP
Corresponding note can be capped one layer of green frame on bootmode music score of Chinese operas interface, while be passed by wired or wireless transmission module 18
Defeated transmission turns off the light to instruct can control the driving of LED drive chip 22 and keyboard one by one to main MCU16, main MCU16 after receiving the data
Corresponding LED light 23 knocks out；
After the music score of Chinese operas note of vernier covering is correctly pressed, vernier can jump to next note, while can be trip
The note of mark covering is converted into midi data and is transferred to main MCU16, successively carries out terminating until the entire music score of Chinese operas, at the end of the music score of Chinese operas
Software APP will not carry out midi data receiver again；
Step 5: opening the identification of spectrogram mode music score of Chinese operas interface of software APP, note of the identification of spectrogram mode music score of Chinese operas interface in the music score of Chinese operas
On there is vernier to show, one layer of green can be capped by pressing software APP identification of spectrogram mode music score of Chinese operas interface after corresponding key and corresponding to note
Frame, note and keyboard in the upper software APP music score of Chinese operas of PAD/PHONE correspond；
When pressing white key, white key detection device 15 acquires the state value of white key by ADC, initial with white key in step 1
State value is compared, if difference is greater than threshold values in main MCU16 and sub- MCU24 program, is judged as down state；If difference is small
The threshold values in main MCU program, then be judged as lifting status；The threshold values is a preset numerical value, which is white key
Detection device 15 detect initial state value of piano white key when not being pressed and be pressed sounding when state value between take
One numerical value；
When pressing black key, blocked among infrared photo-emitter 141 and infrared electro receiver 142 without physics, it is main
MCU16 and sub- MCU24 acquires the signal of black key by GPIO, is judged as down state；When black key lifts, infrared electro transmitting
There is physics to block among device 141 and infrared electro receiver 142, the letter that main MCU16 and sub- MCU24 pass through GPIO acquisition black key
Number, it is judged as lifting status；
Main MCU16 summarizes the keyboard signal collected, and main MCU16 will acquisition by wired or wireless transmission module 18
Keyboard state signal be transferred to pad/phone software APP with the midi data of 16 systems, software APP receives 16 systems
The midi data of 10 systems are converted into after midi data, then and by parsing obtained 10 system of standard of music score of Chinese operas xml document
Midi data compare；
If comparison is correct, software APP identification of spectrogram mode music score of Chinese operas interface, which corresponds to note, can be capped one layer of green frame, work as vernier
After the note of covering is correctly pressed, vernier can jump to next note and receive next push button signalling, then be compared,
Successively carry out；
If comparison is incorrect, the vernier at software APP identification of spectrogram mode music score of Chinese operas interface if, is parked at this note, until playing
Correct key, can just jump to next note, repeat this movement, until the entire music score of Chinese operas terminates, the software APP at the end of the music score of Chinese operas
Data receiver will not be carried out again.
It should be noted that daughter board 1 is the first daughter board 11 in Figure of description, daughter board 2 is the second daughter board 12, daughter board 3 the
Three daughter boards 13.
In use, including the hole USB, glass wedged groove, top layer PCB card slot, bottom PCB card slot, white key detection in this device
Hole, the key positions such as black key detection hole.PCB card slot divides upper layer and lower layer card slot, and lower layer's card slot places the circuit board of detection keyboard, electricity
Contain infrared electro detection sensor, mcu processing unit, wire/wireless transmission module in the plate of road.It is aobvious that upper layer card slot places led
The circuit board shown, driving display unit containing led.Upper layer and lower layer circuit board is all embedded in this device, is connected by FPC soft arranging wire
Power supply and spi signal.
For placing glass, led light is shown glass wedged groove by transparent glass.
Top layer PCB card slot is for placing led display circuit board, driving display unit containing led on this circuit board, and led needs
Aperture that is clear, being of moderate size could be obtained within glass planar 3mm, so top layer card slot plane and glass wedged groove plane
It needs to be placed in parallel.Led lamp and keyboard correspond in circuit board, the double display of traffic lights, and red is used to indicate guiding function,
Green indicates that push button signalling is triggered.Mcu transmits signals to driving chip TM1620 using spi, and TM1620 drives corresponding led aobvious
Show.
Bottom PCB card slot is for placing bottom PCB circuit board, since the black key detection device (14) is mounted on bottom
In PCB circuit board, black key detection device is to occupy the position of keyboard black key end, and correlation infrared electro detection sensor is vertical
Black key 10mm is occupied when keyboard (i.e. circuit board level placement), black key position is occupied when inclination will increase, so bottom PCB circuit
Plate needs to be horizontally arranged, i.e., bottom PCB card slot need to be horizontally arranged.
Bottom infrared detection white key hole is examined with white key of the reflective infrared photoelectric detection sensor to bottom keypad
It surveys.So needing to hollow out processing between device reflective infrared photoelectric detection sensor bottom and keyboard.And in order to guarantee device
Hardness it is indeformable, coupling part is still retained between infrared device two-by-two.Such as Figure 10, infrared electro reflection sensor is located at
In device above white key extended line.The state of keyboard includes initially, presses, lifts, press the time, press dynamics.At the beginning of keyboard
When beginning state, optical signal is big, and being converted into electric signal is low level, and mcu records initial state value by ADC detection.Work as key
When disk down state, optical signal is gradually become smaller, and is converted into electric signal and is gradually risen, mcu by ADC detect state value at that time with
The difference of initial state value is judged as down state once reaching the threshold value of programming.When keyboard lifting status,
Optical signal is gradually increased, and is converted into electric signal and is gradually reduced, the state value that mcu detects state value at that time by ADC and presses
Difference be judged as lifting status once reaching the threshold value of programming, to judge the state of white key.
Black key detection hole is placed in top, black key end keyboard in the 10mm of black key end and is embedded into black key detection hole.Such as figure
11, the correlation infrared electro detection sensor in circuit board is placed in the two sides of black key.When black key it is initial/lift when, black key hides
Gear infrared transmitter is sent to the optical signal of infrared remote receiver, and being converted into electric signal is high level, and mc u is received by GPIO
The state value of black key.When black key is pressed, infrared infrared remote receiver receives the optical signal that infrared transmitter is sent, and is converted into telecommunications
It number is low level, mcu receives the state value of black key by GPIO.
Specific implementation step: this device is placed at pressure spline position and is powered, power supply indicator is bright.All white keys at this time
Mcu can be transferred through ADC detection record initial state value, and black key mcu is then the state by physics shadowing black key.
In conjunction with software end APP, device can pass through wire transmission or wireless transmission and pad/phone both-way communication.It is wired
Transmission is that mcu turns usb chip by uart and is converted to usb signal, is connected to pad/phone by usb interface, can be by standard
Midi data and pad/phone both-way communication.Wireless transmission is mcu by bluetooth module, can be wirelessly connected to
Pad/phone, by the midi data of standard and pad/phone both-way communication.
In conjunction with software end app, music score of Chinese operas interface is opened, into error correction mode.When pressing white key, mcu is acquired white by ADC
The signal of key, is compared with initial state value, if difference is greater than threshold values in mcu program, is judged as down state.If difference
Less than threshold values in mcu program, then it is judged as lifting status.Mcu acquires the signal of black key by GPIO.It is right when black key is pressed
It penetrates among formula infrared electro detection sensor and is blocked without physics, mcu receives signal and is judged as down state, when black key lifts
When, there is physics to block among correlation infrared electro detection sensor, mcu receives signal and is judged as lifting status.Mcu reception is adopted
The keyboard signal collected, and led driving chip is controlled by spi, the transference one-to-one led of keyboard is lighted.Mcu, which also passes through, to be had
Line, which is transmitted or is wirelessly transferred, is transferred to pad/phone software end app for the keyboard state signal of acquisition with midi data.The school app
Whether the midi data and the note in the music score of Chinese operas of acquisition are corresponded, unanimously then software end determines correct, inconsistent then software
Decision error is held, and is identified in software end.The correctness played is judged in turn, carries out error correction.
In conjunction with software end app, music score of Chinese operas interface is opened, into bootmode.Sound in the music score of Chinese operas of the upper software end of pad/phone
Symbol is corresponded with keyboard.When lead learning, software end is transferred to mcu according to the note in the music score of Chinese operas, by the midi signal of standard,
Mcu control led driving chip driving is lighted with the one-to-one led of keyboard.After playing corresponding keyboard, mcu is collected
Keyboard signal, then transfer back to pad/phone software end, software end, which is received, sends instructions to mcu with after the matched data of note,
Mcu control led driving chip driving is knocked out with the one-to-one led of keyboard.Next note is carried out again, is successively carried out, until
Total data end of transmission.
In conclusion present invention only requires replacements to press spline, it will be able to make traditional piano that can retain traditional piano mechanical
The beautiful timbre of generation, and can communicate with each other with electronic equipment, the traditional piano of realization is merged with electronic equipment.
It is understood that being merely to illustrate the present invention above with respect to specific descriptions of the invention and being not limited to this
Technical solution described in inventive embodiments, those skilled in the art should understand that, it is limited not departing from claim
In the case where fixed spirit and scope, it can modify to the present invention or equivalent replacement, to reach identical technical effect, but
All within protection scope of the present invention.
Claims (10)
1. a kind of piano presses spline auxiliary teaching device, including pressure spline ontology (1), it is characterised in that: further include bottom PCB electricity
Road plate, top layer PCB circuit board, black key detection device (14) and white key detection device (15), piano have 88 keyboards, including 52
White key and 36 black keys, the black key detection device (14) are 36, and are corresponded with 36 black keys, the white key detection dress
Setting (15) is 52, and is corresponded with 52 white keys；
The black key detection device (14) includes an infrared photo-emitter (141) and an infrared electro receiver (142),
The white key detection device (15) includes reflective infrared photoelectric detection sensor (151), the black key detection device (14) and
White key detection device (15) is mounted in bottom PCB circuit board, and the bottom PCB circuit board and the top layer PCB circuit board connect
It connects, LED light is provided in the top layer PCB circuit board for showing whether keyboard is pressed；
Pressure spline ontology (1) center offers through slot (2), and the pressure spline ontology (1) positive (101) offers 36
Piano black key detection hole (3), corresponding 1 piano black key of each piano black key detection hole (3), pressure spline ontology (1) bottom
Front end (102) offers piano white key detection slot (4)；
Piano pressure spline ontology (1) is additionally provided with glass wedged groove (5), top layer PCB card slot (6) and bottom PCB card slot (7),
The top layer PCB card slot (6) is for placing top layer PCB circuit board, and the bottom PCB card slot (7) is for placing bottom PCB circuit
Plate, the middle bottom PCB circuit board placed of the bottom PCB card slot (7) is for detecting fingerboard movement, the top layer PCB card
LED light is provided in the top layer PCB circuit board placed in slot (6), the LED light and keyboard correspond, the top layer PCB card
The top layer PCB circuit board placed in slot (6) passes through the LED light being disposed thereon and shows whether fingerboard is pressed, the glass
Card slot (5) is arranged in parallel with the top layer PCB card slot (6), and is arranged above the top layer PCB card slot (6), the glass card
Slot (5) is used to place transparent glass and shows the light of LED.
2. piano according to claim 1 presses spline auxiliary teaching device, it is characterised in that: the bottom PCB card slot (7)
It is horizontally set on the corresponding position of left and right trough rim of through slot (2)；The glass wedged groove (5) and the top layer PCB card slot
(6) on the trough rim of left and right two of dip-parallel setting through slot (2), left trough rim (201) is lower than right trough rim (202), and inclination angle is
The spacing of 15-40 degree, the glass wedged groove (5) and the top layer PCB card slot (6) is within 3mm.
3. piano according to claim 2 presses spline auxiliary teaching device, it is characterised in that: the pressure spline ontology (1)
Back bottom (103) is inclined-plane, and the oblique angle on the back bottom inclined-plane is 45-75 degree.
4. piano according to claim 3 presses spline auxiliary teaching device, it is characterised in that: the bottom PCB circuit board
Including one piece of motherboard (10) and seven the first daughter boards (11), the top layer PCB circuit board includes second daughter board (12) and three
A third daughter board (13) is provided with 1 black key detection device (14) and 3 white key detection devices (15) on the motherboard (10),
First daughter board (11) is provided with 5 black key detection devices (14) and 7 white key detection devices (15).
5. piano according to claim 4 presses spline auxiliary teaching device, it is characterised in that: be arranged on the motherboard (10)
Have main MCU (16), USB female seat (17), wired or wireless transmission module (18), a single connector (19) connects with 1 FPC
Device (20) is provided with sub- MCU (24) on first daughter board (11), two single connectors (19).
6. piano according to claim 5 presses spline auxiliary teaching device, it is characterised in that: on second daughter board (12)
It is provided with LED drive chip (22), LED light (23), 1 FPC connector (20) and 1 double connector (21), described second
Daughter board (12) LED light totally 16 groups of 32 LED light；LED drive chip (22), LED light are provided on the third daughter board (13)
(23) and 2 double connectors (21), third daughter board (13) LED light totally 24 groups of 48 LED light.
7. piano according to claim 6 presses spline auxiliary teaching device, it is characterised in that: the motherboard (10) passes through
SPI is connect with the second daughter board (12), and the motherboard (10) is sequentially connected by SPI with three third daughter boards (13), the motherboard
(10) the main MCU on is sequentially connected by UART and the sub- MCU of seven first daughter boards (11).
8. piano according to claim 7 presses spline auxiliary teaching device, it is characterised in that: the white key detection device
(15) data are acquired to white key by ADC, the black key detection device (14) is acquired data to black key by GPIO.
9. piano according to claim 8 presses spline auxiliary teaching device, it is characterised in that: the piano pressure spline auxiliary
Instructional device further includes the PAD or PHONE for being equipped with software APP, and the software APP is provided with error correction mode music score of Chinese operas interface, draws
Waveguide mode music score of Chinese operas interface and identification of spectrogram mode music score of Chinese operas interface, error correction mode music score of Chinese operas interface, bootmode music score of Chinese operas interface and identification of spectrogram
It is both provided with vernier on mode music score of Chinese operas interface on music score of Chinese operas note, presses bootmode music score of Chinese operas interface and knowledge described in corresponding key
One layer of green frame is additionally provided on spectral model music score of Chinese operas interface to be covered on note.
10. a kind of application method of piano pressure spline auxiliary teaching device, it is characterised in that: use steel as claimed in claim 9
Qin presses spline auxiliary teaching device, specifically includes:
Step 1: be powered at USB female seat (17), motherboard (10), seven the first daughter boards (11), the second daughter board (12) and three thirds
Daughter board (13) is connected, and white key detection device (15) is acquired data record white key initial shape to 52 white keys by ADC at this time
State value, black key detection device (14) are acquired data to 36 black keys by GPIO, when black key original state, are hidden by physics
Gear judges the state of black key；The black key detection device (14) includes an infrared photo-emitter (141) and an infrared light
Electric receiver (142), the white key detection device (15) include reflective infrared photoelectric detection sensor (151)；
It is connect Step 2: opening wired or wireless transmission module (18) with the software APP of PAD or PHONE, top layer PCB circuit board
Two-way data transmission and reception are carried out with bottom PCB circuit board and software APP；
Step 3: opening the error correction mode music score of Chinese operas interface of software APP, error correction mode music score of Chinese operas interface has on the note of the music score of Chinese operas
Vernier is shown, and the vernier is moved on the note of the music score of Chinese operas by the time set, and the time set is
Rhythm in the music score of Chinese operas, different music score of Chinese operas rhythm are different；
When pressing white key, white key detection device (15) acquires the state value of white key by ADC, with white key initial shape in step 1
State value is compared, if difference is greater than threshold values in main MCU (16) and sub- MCU (24) program, is judged as down state；If difference
Less than threshold values in main MCU (16) and sub- MCU (24) program, then it is judged as lifting status；The threshold values is preset one
Numerical value, the numerical value be white key detection device (15) detect initial state value of piano white key when not being pressed and be pressed sounding when
State value between take in a numerical value；
When pressing black key, blocked among infrared photo-emitter (141) and infrared electro receiver (142) without physics, it is main
MCU (16) and sub- MCU (24) acquires the signal of black key by GPIO, is judged as down state；When black key lifts, infrared electro
There is physics to block among transmitter (141) and infrared electro receiver (142), main MCU (16) and sub- MCU (24) are adopted by GPIO
The signal for collecting black key, is judged as lifting status；
Main MCU (16) summarizes the keyboard signal collected, and controls LED drive chip (22) by SPI, conveys keyboard one
One corresponding LED light (23) lights；
Main MCU (16) is by wired or wireless transmission module (18) by the keyboard state signal of acquisition with the midi data of 16 systems
It is transferred to PAD or PHONE software APP, software APP receives the midi data that 10 systems are converted into after the midi data of 16 systems,
Then it is compared with the midi data by parsing 10 system of standard that music score of Chinese operas xml document obtains, comparison is divided into time and sound
Quasi- two dimensions, if it is exactly rhythm mistake that time dimension is problematic, if it is exactly accuracy in pitch mistake that accuracy in pitch dimension is problematic, if
It is exactly correct that all there is no problem；
Software APP can mark out the note of mistake and type (rhythm mistake or the sound of mistake on error correction mode music score of Chinese operas interface
Quasi- mistake), at the end of the entire music score of Chinese operas, APP will pop up corresponding report, inform the specific error situation of user, at this time error correction mould
Formula terminates, and software APP will not carry out data receiver again at this time；
Step 4: opening the bootmode music score of Chinese operas interface of software APP, bootmode music score of Chinese operas interface has on the note of the music score of Chinese operas
Vernier shows, presses after corresponding key that corresponding note can be capped one layer of green on software APP bootmode music score of Chinese operas interface
Frame, note and keyboard in the upper software APP music score of Chinese operas of PAD/PHONE correspond；
Software APP is converted into the music score of Chinese operas note that vernier covers 16 system midi data of corresponding standard, passes through wired or nothing
Line transmission module (18) is transferred to main MCU (16), and main MCU (16) controls LED drive chip (22) drive after receiving midi data
It is dynamic to be lighted with the one-to-one LED light of keyboard (23)；
After user presses corresponding key according to LED light (23) instruction lighted, main MCU (16) or sub- MCU (24) receive acquisition
The keyboard signal arrived, main MCU (16) is by wired or wireless transmission module (18) by the keyboard state signal of acquisition with 16 systems
Midi data be transferred to pad/phone software APP, software APP is converted into 10 systems after receiving the midi data of 16 systems
Midi data, the 10 system midi data that corresponding standard is then converted with music score of Chinese operas note compare, soft if comparison is correct
Corresponding note can be capped one layer of green frame on part APP bootmode music score of Chinese operas interface, while pass through wired or wireless transmission mould
Block (18) transmission sends instruction of turning off the light and gives main MCU (16), and main MCU (16) can control LED drive chip (22) after receiving the data
Driving is knocked out with the one-to-one LED light of keyboard (23)；
After the music score of Chinese operas note of vernier covering is correctly pressed, vernier can jump to next note, while vernier can be covered
The note of lid is converted into midi data and is transferred to main MCU (16), successively carries out terminating until the entire music score of Chinese operas, soft at the end of the music score of Chinese operas
Part APP will not carry out midi data receiver again；
Step 5: opening the identification of spectrogram mode music score of Chinese operas interface of software APP, the identification of spectrogram mode music score of Chinese operas interface has on the note of the music score of Chinese operas
Vernier shows, one layer of green frame can be capped by pressing software APP identification of spectrogram mode music score of Chinese operas interface after corresponding key and corresponding to note,
Note and keyboard in the upper software APP music score of Chinese operas of PAD/PHONE correspond；
When pressing white key, white key detection device (15) acquires the state value of white key by ADC, with white key initial shape in step 1
State value is compared, if difference is greater than threshold values in main MCU (16) and sub- MCU (24) program, is judged as down state；If difference
Less than threshold values in main MCU program, then it is judged as lifting status；The threshold values is a preset numerical value, which is white
Initial state value of key detection device (15) detection piano white key when not being pressed and be pressed sounding when state value between take
In a numerical value；
When pressing black key, blocked among infrared photo-emitter (141) and infrared electro receiver (142) without physics, it is main
MCU (16) and sub- MCU (24) acquires the signal of black key by GPIO, is judged as down state；When black key lifts, infrared electro
There is physics to block among transmitter (141) and infrared electro receiver (142), main MCU (16) and sub- MCU (24) are adopted by GPIO
The signal for collecting black key, is judged as lifting status；
Main MCU (16) summarizes the keyboard signal collected, and main MCU (16) will be adopted by wired or wireless transmission module (18)
The keyboard state signal of collection is transferred to pad/phone software APP with the midi data of 16 systems, and software APP receives 16 systems
The midi data of 10 systems are converted into after midi data, then and by parsing obtained 10 system of standard of music score of Chinese operas xml document
Midi data compare；
If comparison is correct, software APP identification of spectrogram mode music score of Chinese operas interface, which corresponds to note, can be capped one layer of green frame, when vernier covers
Note correctly pressed after, vernier can jump to next note and receive next push button signalling, then be compared, successively
It carries out；
If comparison is incorrect, the vernier at software APP identification of spectrogram mode music score of Chinese operas interface if, is parked at this note, until playing correct
Key, can just jump to next note, repeat this movement, until the entire music score of Chinese operas terminates, software APP will not at the end of the music score of Chinese operas
Data receiver is carried out again.
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| CN111933097A (en) * | 2020-08-17 | 2020-11-13 | 玖月音乐科技(北京)有限公司 | Intelligent error correction method for double-row key teaching |
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| CN206097575U (en) * | 2016-09-28 | 2017-04-12 | 广州市雅迪数码科技有限公司 | Splines is pressed to piano of tape light |
| CN107123334A (en) * | 2017-06-27 | 2017-09-01 | 小叶子（北京）科技有限公司 | A kind of intelligent piano learning machine and its control method |
| CN208954623U (en) * | 2018-09-03 | 2019-06-07 | 无锡吾成互联科技有限公司 | A kind of piano pressure spline auxiliary teaching device |
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| CN111933097A (en) * | 2020-08-17 | 2020-11-13 | 玖月音乐科技(北京)有限公司 | Intelligent error correction method for double-row key teaching |
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