A kind of piano intelligence pressure key latch deviceTechnical field
The present invention relates to a kind of piano key press baffle, refer in particular to a kind of piano intelligence pressure key latch device.
Background technology
Piano is derived from a kind of keyboard instrument in western classicality music, is made up of 88 keys and metallic cord soundboard, generalAll over for solo, play again, the performance such as accompaniment, music of wrirting music and rehearse is very convenient.Player by pressing the key on key,Affecting the gavel that enclose carpet inside piano, then tap steel wire string and send sound, piano is referred to as the king of musical instrument.This is not onlyIt is owing to its volume is maximum, internal structure is the most complicated, topmost or due to its excellent comprehensive performance and use widelyWay is all that other any musical instruments cannot be intended by comparison.
Current piano kind is divided into pianotron and mechanical piano substantially, and pianotron is electrophonic musical instrument, and machined steelQin is then that mechanical-physical purely occurs, and string shakes, qin boominess resonance and produce.Although at present it is practical with it for pianotronProperty and superiority of effectiveness compare is favored by user, but mechanical piano with its real voice effect and perfectly plays feelIt is that pianotron cannot be substituted.When particularly accepting the piano study of system, mechanical piano remains difficult point and the weight of studyPoint.There is a difficult point in traditional mechanical piano study, it is simply that the playing information of mechanical piano cannot objectively gather, the most allNeeding that teacher is the most continual to be listened to, whether bullet is wrong to judge student by the sound sent, and the most instant points out mistakeAnd guiding corrigendum, this just brings Railway Project: first by mistake, and counselor can not accompany always learn at one's side, and student is aloneDuring exercise mechanical piano, the most unmanned discovery in time of its mistake played is pointed out；Second, the memory of counselor is to haveLimit, possibly cannot remember student play during each mistake play action, many unconspicuous mistakes may be missed,The study of system sturdy to student is disadvantageous.
Applicant is in filing date 2015.10.28, and Application No. 201520841588.3 is applied for and discloses a kind of keyboardThe Chinese utility model patent of human-computer interaction device played by musical instrument, and this human-computer interaction device can substitute the artificial indication of teacher,Improve student to playing accuracy and rhythmic power of a test.But this human-computer interaction device there are following defect: 1, by qinKey harvester is arranged on the lower section of key, and being required for first removing key when installing and keep in repair can install or keep in repair,Therefore install and repair the most highly inconvenient, and the requirement to tearing key and installation key open is the highest, it is necessary to by specialtyPersonage dismount；2, key harvester is arranged on the lower section of key, and this can change original acoustic construction, and may shadowRing to sound effect；3, piano is in use, and the gap that dust, water droplet etc. are easy between key enters into the lower section of key,This can badly influence the collection effect of key harvester.
Pressure key shelves are the parts that every piano all have to use, and what existing pressure key shelves used is all wooden realityHeart pressure key shelves, pressure key shelves mainly have following two effect: 1, be pressed on key, prevent key from bouncing；2, qin lid is supported.AsKey harvester etc. can all be arranged on pressure key shelves by fruit, and above-mentioned many defects can effectively be solved.
Summary of the invention
The technical problem to be solved in the present invention, is to provide a kind of piano intelligence pressure key latch device, is filled by these pressure key shelvesPut the on-the-spot indication substituting teacher, the accuracy that raising student plays and the power of a test to rhythm, and then improve teachingQuality.
The present invention is achieved in that a kind of piano intelligence pressure key latch device, including a pressure key shelves body, a key stateAcquisition member, a control mainboard, a fixed connecting plate, an intelligent terminal and guide display lamp component；Described intelligent terminalElectrically connect with described control mainboard；
Described key state acquisition component is arranged on the bottom of described pressure key shelves body, and described guiding display lamp component is arrangedIn the front of described pressure key shelves body, described control mainboard is arranged on the inside of described pressure key shelves body, described pressure key shelves bodyIt is pressed on the key of piano；Described fixed connecting plate is arranged on the back side of described pressure key shelves body；Described key state acquisition structurePart and guiding display lamp component all electrically connect with described control mainboard, and control described key state by described control mainboardAcquisition member gather key state, and control described guiding display lamp component carry out key state instruction and the music score of Chinese operas guide refer toShow.
Further, also include that a light-passing board, described light-passing board stick to the top of described guiding display lamp component.
Further, also including two bump contacted chips, connection sheet described in two is locked respectively and is paid at described pressure key shelves body bottom portionTwo ends, every described connection sheet all offers a bar hole；The two ends of described pressure key shelves body are in the position of corresponding described bar holePut and be each provided with a through hole.
Further, the end of described pressure key shelves body is provided with a USB interface or blue tooth interface, and described control mainboard leads toCross described USB interface or blue tooth interface is connected to described intelligent terminal.
Further, described pressure key shelves body includes an aluminium alloy pressure key shell body, including this aluminium alloy pressure key shell bodyThe middle part of side is provided with a division board, and the bottom of this division board is provided with one first slot；Described aluminium alloy pressure key shell bodyFront is an inclined plane, and the lower surface of described inclined plane is provided with one second slot, and this second slot is positioned at described division boardTop；Offering a transverse opening in described inclined plane, described light-passing board sticks on described transverse opening.
Further, described control mainboard is fixedly arranged on described division board, and described control mainboard is provided with five coresBus interface circuit, six core bus interface circuit, a piece of STM32F103c8T6 chip, usb circuit, oneDebugging interface circuit, a status indicator lamp circuit, a crystal oscillating circuit, a reset circuit and a blue tooth interface electricityRoad；The pin 5,6 of described STM32F103c8T6 chip is connected with described crystal oscillating circuit, described STM32F103c8T6 chipPin 7 is connected with described reset circuit, and the pin 15,16,17 of described STM32F103c8T6 chip connects with described six core busesMouth circuit is connected, and the pin 30,31 of described STM32F103c8T6 chip is connected with described blue tooth interface circuit, describedThe pin 10,27,28 of STM32F103c8T6 chip is connected with described five core bus interface circuits, described STM32F103c8T6The pin 34,37 of chip is connected with described debugging interface circuit, the pin of described STM32F103c8T6 chip 32,33,38 withDescribed usb circuit is connected, pin 41,42,43,45 and the described status indicator lamp of described STM32F103c8T6 chipCircuit is connected.
Further, described key state acquisition component includes a sensing pcb board and 88 reflection infrared sensors,Described sensing pcb board is inserted in described first slot, and 88 described reflection infrared sensors are disposed side by side on described sensingThe bottom of pcb board, and the bottom of every described reflection infrared sensor all abuts with a key；88 described reflective infrared biographiesSensor is all connected to described control mainboard by described sensing pcb board.
Further, described sensing pcb board is provided with 11 74HC164 chips being cascaded and with describedThe CON1 interface that five core bus interface circuits are connected, the positive pole of the transmitting tube of each described reflection infrared sensor is all connected in parallel onTogether, and being connected with 3.3V voltage by a resistance, 3.3V voltage is connected with the positive terminal of described CON1 interface；Every describedThe negative pole receiving pipe of the negative pole of the transmitting tube of reflection infrared sensor and this reflection infrared sensor is all with describedOne outfan of 74HC164 chip is connected；The positive pole receiving pipe of each described reflection infrared sensor is all connected in parallel on oneRise, and be connected with the common condition voltage end of described CON1 interface；The data input pin of 74HC164 chip described in first withThe serial data end of described CON1 interface is connected；The earth terminal of each described 74HC164 chip is all connected in parallel ground connection, and withThe earth terminal of described CON1 interface is connected；The input end of clock of each described 74HC164 chip all with described CON1 interface timeZhong Duan is connected；The RESET input of each described 74HC164 chip is all connected with 3.3V voltage with power input.
Further, described guiding display lamp component includes a display lamp pcb board, 88 status indicator LED lamps and 88Individual guiding indication LED lamp；Described display lamp pcb board is inserted in described second slot, each described status indicator LED lamp and guidingIndication LED lamp is arranged on described display lamp pcb board, and makes each described status indicator LED lamp and guide the equal court of indication LED lampTo described transverse opening；Each described status indicator LED lamp and guiding indication LED lamp are all connected to by described display lamp pcb boardDescribed control mainboard.
Further, described display lamp pcb board is provided with 12 MBI5026 chips being cascaded and one and instituteState the CON2 interface that six core bus interface circuits are connected；The positive pole of each described status indicator LED lamp and guiding indication LED lamp is equalBeing connected in parallel, and be connected with 5V voltage, 5V voltage is connected with the 5V positive terminal of described CON2 interface；Every described state refers toShow that the negative pole of LED is all connected with an outfan of described MBI5026 chip, the negative pole of every described guiding indication LED lampAll it is connected with an outfan of described MBI5026 chip；The power input of each described MBI5026 chip is all electric with 3.3VPressure is connected, and 3.3V voltage is connected with the 3.3V positive terminal of described CON2 interface；The earth terminal of every described MBI5026 chip andEnable the equal ground connection of input, and be connected with the earth terminal of described CON2 interface, the resistance outfan of every described MBI5026 chipAll by a regulation resistance eutral grounding；The serial data input of MBI5026 chip described in first and the string of described CON2 interfaceRow data terminal is connected；The input end of clock of each described MBI5026 chip all clock ends with described CON2 interface are connected, respectivelyThe data of described MBI5026 chip are dodged control input and are all connected with the sudden strain of a muscle control end of described CON2 interface.
Present invention have the advantage that 1, the present invention by increasing electronic device on traditional mechanical piano, utilize electricitySub-device substitutes the on-the-spot indication of teacher, can be greatly improved accuracy that student plays and to rhythmic power of a test,Improve the quality of teaching；2, by key state acquisition component being arranged on pressure key shelves, not only install and repair the most extremelyConvenient, and original acoustic construction of mechanical piano will not be corrupted to, it can be ensured that play effect unaffected；3, in useDuring, dust, water droplet etc. are all not easily accessed inside pressure key shelves, it is possible to achieve adopt key state accuratelyCollection.
Accompanying drawing explanation
The present invention is further illustrated the most in conjunction with the embodiments.
Fig. 1 is the structural representation of piano intelligence of the present invention pressure key latch device.
Fig. 2 is the side view of piano intelligence of the present invention pressure key latch device.
Fig. 3 is the side view of aluminium alloy pressure key shell body in the present invention.
Fig. 4 is the structural representation connecting sheet in the present invention.
Fig. 5 is the front schematic view (removing light-passing board) of aluminium alloy of the present invention pressure key shell body.
Fig. 6 is the front view of piano intelligence of the present invention pressure key latch device.
Fig. 7 is the circuit structure diagram sensing pcb board in the present invention.
Fig. 8 is the circuit structure diagram of display lamp pcb board in the present invention.
Fig. 9 is the circuit structure diagram controlling mainboard in the present invention.
Detailed description of the invention
Refer to shown in Fig. 1 to Fig. 9, a kind of piano intelligence pressure key latch device 100, including pressure key shelves body 1, keyState acquisition component 2, one control mainboard 3, guide display lamp component 4, intelligent terminal (not shown), a light-passing board 5 andTwo bump contacted chips 6；Described intelligent terminal (such as panel computer etc.) electrically connects with described control mainboard 3；
Described key state acquisition component 2 is arranged on the bottom of described pressure key shelves body 1, described guiding display lamp component 4Being arranged on the front of described pressure key shelves body 1, described control mainboard 3 is arranged on the inside of described pressure key shelves body 1, described pressure keyShelves body 1 is pressed on the key of piano；Described key state acquisition component 2 and guide display lamp component 4 all with described controlMainboard 3 electrically connects, and controls described key state acquisition component 2 by described control mainboard 3 and gather key state, and controlsDescribed guiding display lamp component 4 carries out the instruction of key state and the music score of Chinese operas guides instruction.
The end of described pressure key shelves body 1 is provided with a USB interface 7 or blue tooth interface (not shown), described control mainboard 3It is connected to described intelligent terminal by described USB interface 7 or blue tooth interface (not shown).So, in the mistake carrying out piano playingCheng Zhong, it is possible to the music score of Chinese operas and the key state collected are shown on intelligent terminal, it is also possible to realize intelligent terminal and controlMutual (such as can carry out song transmission etc.) of other data between mainboard 3.
Described light-passing board 5 sticks to the top of described guiding display lamp component 4, and this light-passing board 5 is possible to prevent dust adhesionTo guiding on display lamp component 4, it is favorably improved the display effect of display lamp and plays the effect of protection display lamp.
Please emphasis with reference to shown in Fig. 4, connect sheet 6 described in two and lock the two ends pair bottom described pressure key shelves body 1 respectively, oftenA bar hole 61 is all offered on described connection sheet 6；The two ends of described pressure key shelves body 1 are in the position of corresponding described bar hole 61It is each provided with a through hole 111.When installing pressure key shelves body 1, can use screw (not shown) that connection sheet 6 is locked at pianoOn, and then realize being fixed on piano pressure key shelves body 1.In the specific implementation, the back of pressure key shelves body 1 is provided with one admittedlyDetermining connecting plate 16, this fixed connecting plate 16 can be fixed together with the fixing bar (not shown) being arranged on piano, withThis pressure key shelves body 1 is played further fixation.
Please emphasis with reference to shown in Fig. 3, described pressure key shelves body 1 includes an aluminium alloy pressure key shell body 11, this aluminium alloy pressureKey shell body 11 is provided with a division board 12 at the middle part of inner side, and the bottom of this division board 12 is provided with one first slot 13；InstituteThe front stating aluminium alloy pressure key shell body 11 is an inclined plane 112, and the lower surface of described inclined plane 112 is provided with one second slot14, and this second slot 14 is positioned at the top of described division board 12；Offer in described inclined plane 112 transverse opening 15 (asShown in Fig. 5), described light-passing board 5 sticks on described transverse opening 15.
Please emphasis with reference to shown in Fig. 9, described control mainboard 3 is fixedly arranged on described division board 12, and described control mainboard 3 setsIt is equipped with 31, six core bus interface circuit 32 of a five core bus interface circuit, a piece of STM32F103c8T6 chip 33,34, debugging interface circuit of individual usb circuit, 36, crystal oscillating circuit of 35, status indicator lamp circuit 37, one is multiplePosition circuit 38 and a blue tooth interface circuit 39；Pin 5,6 and the described crystal oscillating circuit of described STM32F103c8T6 chip 3337 are connected, and this crystal oscillating circuit 37 is used for providing clock；The pin 7 of described STM32F103c8T6 chip 33 and the described electricity that resetsRoad 38 is connected, and this reset circuit 38 is for realizing the reset function of STM32F103c8T6 chip 33；DescribedThe pin 15,16,17 of STM32F103c8T6 chip 33 is connected with described six core bus interface circuits 32, and this six cores bus connectsMouthful circuit 32 for realizing and docking of guiding display lamp component 4, the pin 30,31 of described STM32F103c8T6 chip 33 withDescribed blue tooth interface circuit 39 is connected, for realizing the data interaction with intelligent terminal；Described STM32F103c8T6 chip 33Pin 10,27,28 be connected with described five core bus interface circuits 31, this five cores bus interface circuit 31 is for realizing and qinThe docking of bonded state acquisition member 2；Pin 34,37 and the described debugging interface circuit 35 of described STM32F103c8T6 chip 33Being connected, this debugging interface circuit 35 is for realizing the debugging of STM32F103c8T6 chip 33；Described STM32F103c8T6 coreThe pin 32,33,38 of sheet 33 is connected with described usb circuit 34, for realizing the data interaction with intelligent terminal；DescribedThe pin 41,42,43,45 of STM32F103c8T6 chip 33 is connected with described status indicator lamp circuit 36, is used for indicatingThe duty of STM32F103c8T6 chip 33.
Described key state acquisition component 2 includes a sensing pcb board 21 and 88 reflection infrared sensor 22 (i.e. U1～U88), described sensing pcb board 21 is inserted in described first slot 13, and 88 described reflection infrared sensors 22 set side by sidePut the bottom at described sensing pcb board 21, and the bottom of every described reflection infrared sensor 22 all abuts with a key, with realityNow detection in real time and the collection to each key state；88 described reflection infrared sensors 22 are all by described sensing pcb board21 are connected to described control mainboard 3.Due to press key and release key time, between reflection infrared sensor 22 and keyDistance can change, by will apart from change change into change in voltage and send to control mainboard be acquired and analyze,Just can draw the real-time status of key.
Please emphasis with reference to shown in Fig. 7, described sensing pcb board 21 is provided with 11 74HC164 chips being cascaded211 (i.e. including IC1～IC11 sheet 74HC164 chip) and a CON1 being connected with described five core bus interface circuits 31 connectMouthfuls 212, the positive pole A of the transmitting tube of each described reflection infrared sensor 22 is all connected in parallel, and by a resistance R1 with3.3V voltage is connected, and 3.3V voltage is connected with the positive terminal VCC of described CON1 interface 212；Every described reflective infrared biographyThe negative pole E receiving pipe of the negative pole K of the transmitting tube of sensor 22 and this reflection infrared sensor 22 all with described 74HC164 chipOne outfan of 211 is connected；The positive pole C receiving pipe of each described reflection infrared sensor 22 is all connected in parallel, andIt is connected with the common condition voltage end ADC of described CON1 interface 212；74HC164 chip 211 (i.e. IC1) described in firstData input pin (A with B) is connected with the serial data end SDA of described CON1 interface 212, and each 74HC164 chip 211 is at stringDuring connection, the data input pin (A and B) of rear a piece of 74HC164 chip 211 all with an outfan of front a piece of 74HC164 chip 211It is connected, thus realizes being cascaded 11 pieces of 74HC164 chips 211；The earth terminal of each described 74HC164 chip 211 is equalBe connected in parallel ground connection, and is connected with the earth terminal GND of described CON1 interface 212；Each described 74HC164 chip 211 timeClock input is all connected with the clock end SCL of described CON1 interface 212；The RESET input of each described 74HC164 chip 211All it is connected with 3.3V voltage with power input.
Described guiding display lamp component 4 includes that 41,88 status indicator LED lamps 42 of a display lamp pcb board (i.e. include LED_B1～LED_B88) and 88 guiding indication LED lamp 43 (i.e. including LED_R1～LED_R88)；Described display lamp pcb board 41Being inserted in described second slot 14, each described status indicator LED lamp 42 and guiding indication LED lamp 43 are arranged at described instructionOn lamp pcb board 41, and make each described status indicator LED lamp 42 and guide indication LED lamp 43 all towards described transverse opening 15；RespectivelyDescribed status indicator LED lamp 42 and guiding indication LED lamp 43 are all connected to described control mainboard by described display lamp pcb board 413.In the specific implementation, status indicator LED lamp 42 can use blue lamp, guides indication LED lamp 43 can use red colored lamp, withConveniently two kinds of lamps are made a distinction；Wherein, status indicator LED lamp 42 is for indicating the state of key, when some is reflective redOuter sensor 22 detects when key is pressed, and the status indicator LED lamp 42 corresponding to this key just lights blue lamp, when this qinAfter key is released, status indicator LED lamp 42 just extinguishes；Guide indication LED lamp 43 for guiding student to need to play according to the music score of Chinese operasWhich key, the most now needs to press first key, then the guiding indication LED lamp 43 corresponding to first key is the brightestPlaying red light, after student presses first key, this guiding indication LED lamp 43 corresponding to first key just extinguishes.So,Student practice on the piano play time, avoided the need for teacher and aside instructed, it is only necessary to according to guide indication LED lamp 43 guidingPlaying, and student is after pressing key, corresponding status indicator LED lamp 42 will be light, and student can be the most directly perceivedFind out oneself play the most correct.
Please emphasis with reference to shown in Fig. 8, described display lamp pcb board 41 is provided with 12 MBI5026 cores being cascadedSheet 411 (i.e. including IC1～IC12 sheet MBI5026 chip) and a CON2 being connected with described six core bus interface circuits 32Interface 412；Each described status indicator LED lamp 42 and guide the positive pole of indication LED lamp 43 to be all connected in parallel, and with 5V voltage phaseConnecting, 5V voltage is connected with the 5V positive terminal of described CON2 interface 412；The negative pole of every described status indicator LED lamp 42 all withOne outfan of described MBI5026 chip 411 is connected, and the negative pole of every described guiding indication LED lamp 43 is all with describedOne outfan of MBI5026 chip 411 is connected；The power input of each described MBI5026 chip 411 all with 3.3V voltageBeing connected, 3.3V voltage is connected with the 3.3V positive terminal of described CON2 interface 412；The ground connection of every described MBI5026 chip 411End and the enable equal ground connection of input, and be connected with the earth terminal GND of described CON2 interface 412, every described MBI5026 chipThe resistance outfan of 411 all by one regulation resistance (MBI5026 chip IC 1～IC12 respectively be correspondingly arranged regulation resistance R1～R12) ground connection；The serial data input of MBI5026 chip 411 described in first and the serial data of described CON2 interface 412End SIN is connected, and each MBI5026 chip 411 is when series connection, and the serial data input of rear a piece of MBI5026 chip 411 is equalIt is connected with the data output end of front a piece of MBI5026 chip 411, thus realizes 12 pieces of MBI5026 chips 411 are connected on oneRise；The input end of clock of each described MBI5026 chip 411 is all connected with the clock end CLK of described CON2 interface 412, each instituteThe data sudden strain of a muscle control input stating MBI5026 chip 411 is all connected with the sudden strain of a muscle control end LAT of described CON2 interface 412.
Intelligence of the present invention pressure key latch device 100 when mounted, can be by connecting sheet 6 and fixed connecting plate 16 by this pressure keyLatch device 100 is fixedly installed on the key of piano.In use, by USB interface 7 or blue tooth interface, intelligence can be pressed keyLatch device 100 is connected with intelligent terminal, to utilize intelligent terminal that intelligence pressure key latch device 100 is carried out parameter configuration, state inspectionSurvey, data analysis etc., it is also possible on intelligent terminal real-time display music score, play state etc..When student to play, canTo control to guide indication LED lamp 43 to carry out bright light guiding according to the music score of Chinese operas by control mainboard 3, student can be carried out according to guidingPlay, and after student presses key, key state will be sent to control mainboard 3 by reflection infrared sensor 22, controlsMainboard 3 can carry out bright light instruction according to the state of key by controlled state indication LED lamp 42, just plays to facilitate student to check whetherReally.
In sum, present invention have the advantage that 1, the present invention is by increasing electronics device on traditional mechanical pianoPart, utilizes electronic device to substitute the on-the-spot indication of teacher, can be greatly improved accuracy that student plays and to rhythmPower of a test, improve the quality of teaching；2, by key state acquisition component being arranged on pressure key shelves, not only install and keeped in repairCarry out all extremely convenients, and original acoustic construction of mechanical piano will not be corrupted to, it can be ensured that play effect unaffected；3、During using, dust, water droplet etc. are all not easily accessed inside pressure key shelves, it is possible to achieve carry out key state accuratelyErrorless collection.
Although the foregoing describing the detailed description of the invention of the present invention, but those familiar with the art should managingSolving, our described specific embodiment is merely exemplary rather than for the restriction to the scope of the present invention, is familiar with thisThe technical staff in field, in the equivalent modification made according to the spirit of the present invention and change, should be contained the present invention'sIn scope of the claimed protection.