CN111540337A

CN111540337A - Automatic playing device for piano

Info

Publication number: CN111540337A
Application number: CN202010322824.6A
Authority: CN
Inventors: 邵金琳
Original assignee: Zhengzhou Preschool Education College
Current assignee: Zhengzhou Preschool Education College
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2020-08-14

Abstract

The invention discloses an automatic playing device for a piano, which comprises a supporting plate, wherein a plurality of sliding grooves which are equal to piano keys in number and correspond to the piano keys in position one by one are formed in the front of the supporting plate, a sliding block is connected to each sliding groove in a sliding mode, a pressing block for pressing the piano keys is fixed below the part, located on the outer side of each sliding groove, of each sliding block, a first solenoid coil is arranged on each sliding block, the first solenoid coils are electrically connected with a power supply device through first relays, a fixed block is arranged above each sliding groove, a second solenoid coil is arranged below each fixed block, the second solenoid coils are electrically connected with the power supply device through second relays, and a touch display is arranged on the back of the supporting plate. The invention can automatically play the piano according to the selected song, the supporting plate of the invention is clamped on the piano through the clamping structure, and the central processor automatically presses the keys through the electromagnetic technology to enable the piano to automatically play the selected song.

Description

Automatic playing device for piano

Technical Field

The invention relates to the field of performance devices, in particular to an automatic performance device of a piano.

Background

The piano is one of keyboard musical instruments, and needs people to play to make vivid sound, so that most people also like listening to the solo of the piano, and the piano can give people a pleasant feeling. The piano is very professional, and not perfect, so that when people want to listen to the performance of the piano, people can listen to the piano only by going to a concert, and in the concert, the played music is well defined in advance and cannot play music according to the preference of listeners, so that the user cannot experience better.

Disclosure of Invention

The invention aims to overcome the problems in the prior art and provides an automatic playing device for a piano, which can automatically play the piano according to the selected songs, clamps a supporting plate of the automatic playing device on the piano through a clamping structure, and automatically presses keys through an electromagnetic technology by a central processing unit so that the piano automatically plays the selected songs.

The invention provides an automatic playing device for a piano, which comprises a supporting plate, wherein the front surface of the supporting plate is provided with a plurality of sliding grooves which are in one-to-one correspondence with the number of piano keys and have the same positions in the longitudinal direction, each sliding groove is connected with a sliding block in a sliding way, a pressing block for pressing the piano keys is fixed below the part of the sliding block, which is positioned outside the sliding groove, a first solenoid coil is arranged on the sliding block and is electrically connected with a power supply device through a first relay, a fixed block is arranged above each sliding groove, a second solenoid coil is arranged below the fixed block and is electrically connected with the power supply device through a second relay, a touch display is arranged on the back surface of the supporting plate, the automatic playing device for the piano further comprises a central processing unit, and the central processing unit is respectively in signal connection with the first relay, the second relay and the, the touch display is electrically connected with the power supply device.

Furthermore, the bottom of backup pad is equipped with the frequency detector, frequency detector and piano surface contact, each the below of spout is equipped with the pilot lamp, the pilot lamp with the frequency detector respectively with central processing unit signal connection, the pilot lamp with the frequency detector is connected with power supply unit electricity respectively.

Furthermore, the frequency detector passes through the spring with the backup pad is connected, the spring endotheca is equipped with length-adjustable's telescopic link, and the one end of telescopic link is connected in on the backup pad, the other end of telescopic link is connected on the frequency detector.

Furthermore, the back of the supporting plate is also provided with a recorder, the recorder is in signal connection with the central processing unit, and the recorder is electrically connected with the power supply device.

Furthermore, the back of the supporting plate is also provided with a selection switch for selecting the working states of the sound recorder and the touch display.

Further, the bottom of briquetting is equipped with the touch layer, and the touch layer is the cortex material.

Further, the left end and the right end of the supporting plate are respectively provided with a sliding rail, and the sliding rails are connected with a clamping mechanism in a sliding mode.

Furthermore, the upper surface of the fixed block is connected with a supporting block through a spring, a pressing pad is arranged on the supporting block, a lower connecting rod is fixed on the upper surface of the fixed block, an upper connecting rod is fixed on the lower surface of the supporting block, and the upper connecting rod is connected with the lower connecting rod in a sliding mode.

Further, the upper connecting rod and the lower connecting rod are both located inside the spring.

The invention provides an automatic playing device for a piano, which has the following beneficial effects:

1. the piano is automatically played according to the selected songs, the supporting plate is clamped on the piano through the clamping structure, and the central processing unit automatically presses the keys through the electromagnetic technology to enable the piano to automatically play and play the selected songs;

2. the pressing block is pressed down through the electromagnetic attraction force and the electromagnetic repulsion force, so that the keys are pressed, the electromagnetic magnetic force can save the minimum pressing length of the traditional telescopic rod, and meanwhile, no reversely-locked wire is wound, so that the using space is saved;

3. the frequency of sound emitted by the piano is detected and compared with the standard note frequency, the sound emitted by the current key pressing is judged to be standard, and the sound is marked through an indicator light;

4. the invention also receives the music played by the user through the recorder, and searches the whole music containing the music in the database through the central processor, so that the whole playing music can be listened to without knowing the information of the music.

Drawings

FIG. 1 is a schematic view of the overall structure of the front face of the present invention;

FIG. 2 is a schematic view of the overall structure of the back side of the present invention;

fig. 3 is a schematic cross-sectional view of the longitudinal structure of the side of the present invention.

Description of reference numerals:

1. a slide rail; 2. a clamping mechanism; 3. a frequency detector; 4. a support plate; 5. a fixed block; 6. a slider; 7. briquetting; 8. a chute; 9. a second solenoid coil; 10. a support block; 11. a sound recorder; 12. a touch display; 13. a spring; 14. a touch layer; 15. a first solenoid.

Detailed Description

Several embodiments of the present invention will be described in detail below with reference to the drawings, but it should be understood that the scope of the present invention is not limited to the embodiments.

In the present application, the type and structure of components that are not specified are all the prior art known to those skilled in the art, and those skilled in the art can set the components according to the needs of the actual situation, and the embodiments of the present application are not specifically limited.

Example 1

The present embodiment provides an automatic playing apparatus for a piano, which achieves the present invention through essential technical features to solve the problems set forth in the technical background section of this document.

Specifically, as shown in fig. 1 to 3, the embodiment of the present invention provides an automatic playing device for a piano, which includes a supporting plate 4, a plurality of sliding grooves 8 corresponding to the piano keys in number and in one-to-one correspondence with the positions are formed in the front surface of the supporting plate 4, a sliding block 6 is slidably connected to each sliding groove 8, a pressing block 7 for pressing the piano keys is fixed below the portion of the sliding block 6 located outside the sliding groove 8, a first solenoid 15 is disposed on the sliding block 6, the first solenoid 15 is electrically connected to a power supply device through a first relay, a fixing block 5 is disposed above each sliding groove 8, a second solenoid 9 is disposed below the fixing block 5, the second solenoid 9 is electrically connected to the power supply device through a second relay, a touch display 12 is disposed on the back surface of the supporting plate 4, and the automatic playing device for a piano further includes a central processing unit, the central processing unit is respectively in signal connection with the first relay, the second relay and the touch display 12, and the touch display 12 is electrically connected with the power supply device.

When the music playing device is used, a user inputs the name of a song to be played through the touch display 12, the touch display 12 sends the received name of the song to the central processing unit, the central processing unit searches in a built-in database according to the name of the song to obtain each note of the song and the sequence of each note, the central processing unit sequentially controls the first relay and the second relay according to the sequence of each note, each note corresponds to the first relay and the second relay respectively, when the note is played, only one key needs to be pressed, a group of first relay and second relay corresponding to the note, when the note is played by only pressing at least two keys, the corresponding multiunit first relay and the second relay of this note, each first relay of group and second relay correspond a key respectively.

When the central processing unit controls the first relay and the second relay, the two conditions are divided into two conditions, when the key is pressed down, the central processing unit controls the first relay to enable the first solenoid coil 15 to generate magnetic force, the central processing unit controls the second relay to enable the second solenoid coil 9 to generate magnetic force, the magnetic force generated by the first solenoid coil 15 and the magnetic force generated by the second solenoid coil repel each other, so that the slide block 6 drives the press block 7 to press downwards, the key is pressed, when the key does not need to be pressed, the central processing unit controls the first relay to enable the first solenoid coil 15 to generate magnetic force, the central processing unit controls the second relay to enable the second solenoid coil 9 to generate magnetic force, the first solenoid coil 15 generates magnetic force and the magnetic force generated by the second solenoid coil are attracted, the sliding block 6 and the fixed block 5 are in an attraction state, and at the moment, the pressing block 7 is not in contact with the key.

Example 2

The present embodiment is based on example 1 and optimizes the implementation scheme in example 1, so that the present embodiment is more stable and better in performance during the operation process, but the present embodiment is not limited to the implementation manner described in the present embodiment.

Specifically, in this embodiment, the bottom of the supporting plate 4 is provided with a frequency detector 3, the frequency detector 3 is in contact with the surface of the piano, an indicator light is arranged below each sliding groove 8, the indicator light and the frequency detector 3 are respectively in signal connection with the central processing unit, and the indicator light and the frequency detector 3 are respectively electrically connected with a power supply device.

When central processing unit controlled first relay and second relay in proper order according to the order of each note, the real-time frequency that detects of receiving frequency detector 3 of central processing unit, frequency detector 3 hugs closely with the body of piano, just so can detect the frequency of the vibration of piano, the frequency of the sound of sending promptly, and transmit the frequency to central processing unit, central processing unit compares according to the frequency that the piano sent and the standard frequency of current note, when the frequency that the piano sent is inconsistent with the standard frequency of current note, central processing unit control pilot lamp lights, the pilot lamp that lights is located the below of the first relay that current note corresponds and second relay place spout 8, after the pilot lamp lights, the pilot lamp is in the state of normally lighting.

Meanwhile, further, the indicator light is a two-color indicator light, such as a red-yellow indicator light, the central processor compares the frequency emitted by the piano with the standard frequency of the current note, when the frequency emitted by the piano is higher than the standard frequency of the current note, the indicator light lights one of the colors, such as red, and when the frequency emitted by the piano is lower than the standard frequency of the current note, the indicator light lights one of the colors, such as yellow.

Meanwhile, in this embodiment, the frequency detector 3 is connected with the support plate 4 through a spring 13, a telescopic rod with adjustable length is sleeved in the spring 13, one end of the telescopic rod is connected to the support plate 4, and the other end of the telescopic rod is connected to the frequency detector 3.

The telescopic link of adjustable length can be so that spring 13 is in the length direction of telescopic link all the time for frequency detector 3's position keeps spacing, and spring 13 can be so that frequency detector 3 all the time with the inseparable laminating of the body of piano.

In this embodiment, the back of the supporting plate 4 is further provided with a sound recorder 11, the sound recorder 11 is in signal connection with the central processing unit, and the sound recorder 11 is electrically connected with the power supply device.

The sound recorder 11 is configured to receive the segments of the tracks, and send the received segments of the tracks to the central processing unit, and the central processing unit searches in a built-in database according to the segments of the tracks to obtain each note of the track and a sequence of each note. This technique is consistent with the song search technique and therefore will not be described in detail here.

Meanwhile, in the present embodiment, the back surface of the support plate 4 is further provided with a selection switch for selecting the operating states of the sound recorder 11 and the touch display 12.

The selection switch is used for switching the selection mode of songs, namely, the sound recorder 11 or the touch display 12 is used, the selection switch has two states which respectively correspond to the sound recorder 11 and the touch display 12, the selection switch sends the states to the central processor, the central processor receives signals sent by the sound recorder 11 when the state of the selection switch corresponds to the sound recorder 11, and the central processor receives signals sent by the touch display 12 when the state of the selection switch corresponds to the touch display 12.

In this embodiment, the bottom of the pressing block 7 is provided with a touch layer 14, and the touch layer 14 is made of a leather material. The touch layer 14 can cause the weight 7 to reduce the impact on the key, so that the wear of the key is reduced.

In this embodiment, the left and right ends of the supporting plate 4 are respectively provided with a sliding rail 2, and the sliding rail 2 is connected with a clamping mechanism 2 in a sliding manner. Fixture 2 is used for cliping the both ends of piano, fixes backup pad 4 in the position of setting for, and the setting up of slide rail 2 can make fixture 2 more random in the centre gripping simultaneously, and in this embodiment, fixture 2 uses the clip. Therefore, the invention can be disassembled and assembled at any time, can be applied to all pianos, and simultaneously does not change the internal structure of the piano.

In this embodiment, there is a supporting block on the fixed block 5 through spring coupling, and the supporting block is provided with a pressing pad thereon, and the fixed block 5 is fixed with lower connecting rod on it, and the supporting block is fixed with upper connecting rod below, upper connecting rod with lower connecting rod sliding connection.

In the playing process, although the player plays automatically, the player is required to sit beside the piano to play, therefore, the player is required to play more perfectly, and the spring arranged on the fixed block 5 is connected with the supporting block, so that the touch feeling of the key pressing can be simulated, meanwhile, the real key cannot be touched, the sound cannot be produced in the playing process, and the piano can have the posture of playing.

Meanwhile, in this embodiment, the upper connecting rod and the lower connecting rod are both located inside the spring. Therefore, the supporting block can not shake leftwards and rightwards when being pressed, and the supporting block can intelligently move along the straight line where the upper connecting rod and the lower connecting rod are located.

The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims

1. An automatic piano playing device comprises a supporting plate (4) and is characterized in that sliding grooves (8) which correspond to piano keys in number and are in one-to-one correspondence with positions in the longitudinal direction are formed in the front of the supporting plate (4), a sliding block (6) is connected to each sliding groove (8) in a sliding mode, a pressing block (7) used for pressing the piano keys is fixed below the portion, located on the outer side of each sliding groove (8), of each sliding block (6), a first solenoid (15) is arranged on each sliding block (6), each first solenoid (15) is electrically connected with a power supply device through a first relay, a fixing block (5) is arranged above each sliding groove (8), a second solenoid (9) is arranged below each fixing block (5), each second solenoid (9) is electrically connected with the power supply device through a second relay, a touch display (12) is arranged on the back of the supporting plate (4), the piano automatic playing device further comprises a central processing unit, the central processing unit is in signal connection with the first relay, the second relay and the touch display (12) respectively, and the touch display (12) is electrically connected with the power supply device.

2. An automatic playing apparatus for a piano as recited in claim 1, wherein said supporting plate (4) is provided at its bottom with a frequency detector (3), said frequency detector (3) is in contact with the surface of a piano, an indicator lamp is provided below each of said sliding grooves (8), said indicator lamp and said frequency detector (3) are respectively signal-connected to said cpu, and said indicator lamp and said frequency detector (3) are respectively electrically connected to a power supply means.

3. An automatic playing apparatus for a piano as recited in claim 2, wherein said frequency detector (3) is connected to said supporting plate (4) through a spring (13), a telescopic rod having an adjustable length is fitted in said spring (13), one end of said telescopic rod is connected to said supporting plate (4), and the other end of said telescopic rod is connected to said frequency detector (3).

4. An automatic playing apparatus for a piano as recited in claim 1, wherein a recorder (11) is further provided on the back surface of said supporting plate (4), said recorder (11) being in signal connection with said cpu, said recorder (11) being electrically connected with said power supply means.

5. An automatic playing apparatus for a piano as recited in claim 4, wherein a selection switch for selecting an operation state of said recorder (11) and touch display (12) is further provided on a back surface of said supporting plate (4).

6. An automatic playing apparatus for a piano as recited in claim 1, wherein said press block (7) is provided at its bottom with a touch layer (14), said touch layer (14) being made of leather.

7. An automatic playing apparatus for a piano as recited in claim 1, wherein slide rails (2) are respectively provided at left and right ends of said supporting plate (4), and said slide rails (2) are slidably connected with said clamping means (2).

8. An automatic playing apparatus for a piano as claimed in claim 1, wherein said fixing block (5) is connected to an upper surface thereof with a supporting block through a spring, the supporting block is provided with a pressing pad thereon, said fixing block (5) is fixed to an upper surface thereof with a lower connecting rod, and an upper connecting rod is fixed to a lower surface thereof with said upper connecting rod being slidably connected to said lower connecting rod.

9. An automatic playing apparatus for a piano as recited in claim 8, wherein said upper connecting rod and said lower connecting rod are located inside said spring.