CN208706229U - A kind of fender using hammerhead velocity sensor - Google Patents

Abstract

A kind of fender using hammerhead velocity sensor, it includes key, hammerhead, hammerhead is equipped with magnet, including coil, the position that hammerhead is equipped with magnet can be done in coil across coil inside plane and far from the movement of coil inside plane, coil is connected by the input terminal of conducting wire and signal processing module, and the output end of signal processing module and the input terminal of sound box system connect.The purpose of this utility model is to provide for that one kind exempts from hammerhead in piano, string facility maintenance reduces hammerhead in other words, string facility maintenance number, increases hammerhead, string mechanism service life, the technical solution for preventing piano sound to be deteriorated.

Description

A kind of fender using hammerhead velocity sensor

Technical field

The utility model belongs to the field of playing an instrument, and in particular to a kind of sensing dress for hammerhead tachometric survey in qin class It sets.

Background technique

The generation of piano voice is to tap string by hammerhead, so that string is generated vibration, and pass vibrational energy by saddle On the soundboard for having passed sympathetic response effect, the vibration of soundboard generates the wave of density in air, issues the piano that we are heard Sound.The transmitting of energy caused by this series of vibration is to be excited as player caused by hammerhead, without hammerhead first The movement of this blow string, sound do not know where to begin.The design of piano hammerhead is different, and the tone color presented is just different, fully demonstrates Important function of the piano hammerhead in terms of influencing piano sound.In view of the complicated exquisite structure of piano, piano needs the nursing of timing, Tone color to guarantee it is constant.

Meanwhile generally using professional recording equipment to record now for the performance of piano, but use external equipment It records the inevasible interference that will receive noise, although Dolby circuit is mostly used to carry out the reduction of noise greatly in the prior art, But recording can not 100% reduction original play.

It in addition to this, include the components such as struck string machine keyboard system, hammerhead mechanism, sound box system, knot inside existing piano Structure complexity is heavy, expends a large amount of timber steel, and manufacturing cost is high, while volume, weight are big, and it is inconvenient to carry, and accuracy in pitch is also unstable It is fixed.

Summary of the invention

The purpose of this utility model is to provide for that one kind exempts from hammerhead in piano, string facility maintenance reduces string in other words Mallet, string facility maintenance number increase hammerhead, string mechanism service life, the technical solution for preventing piano sound to be deteriorated.

The purpose of utility model is achieved in that

A kind of fender using hammerhead velocity sensor, it includes key, hammerhead, and hammerhead is equipped with magnet, including line Circle, the position that hammerhead is equipped with magnet are movably arranged on above coil, and coil passes through the input terminal of conducting wire and signal processing module Connection, the output end of signal processing module and the input terminal of sound box system connect.

Including microcontroller, the data terminal of microcontroller and the signal output end of signal processing module are connected.

After above-mentioned signal processing module amplifies voltage signal, filters, sampling, quantifying, encoding, will treated electricity Signal is transmitted to microcontroller.

Adjust the relative position of coil and hammerhead, it is ensured that signal just generation when string point is hit in hammerhead arrival.

Including key scanning means, the data terminal of key scanning means and microcontroller is connected.

Including strip circuit plate, at least two coil is disposed on strip circuit plate, multiple coils are multiple with multichannel respectively Connected with the input terminal of device, microcontroller by the output signal of multiplexer from bank called data so that speaker system System sounding.

The position that above-mentioned hammerhead is equipped with magnet can be done in coil across coil inside plane and far from coil inside The movement of plane.

By adopting the above technical scheme, following technical effect can be brought:

1) the utility model can substantially reduce the maintenance times of hammerhead, string mechanism, guarantee tone color, the sound of piano for a long time Matter；

2) the utility model can be recorded piano performance with very high quality, and the reduction piano of high quality is drilled It plays.

Detailed description of the invention

The utility model is described in further detail with reference to the accompanying drawings and examples:

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is keyboard and the structural schematic diagram of hammerhead mechanism in Fig. 1；

Fig. 3 is microcontroller and its peripheral structure block diagram in the utility model.

Specific embodiment

A kind of fender using hammerhead velocity sensor as shown in Figure 1, it includes key, hammerhead, and hammerhead is equipped with magnetic Iron, including coil, the position that hammerhead is equipped with magnet can be done in coil across coil inside plane and far from coil inside The movement of plane, coil are connected by the input terminal of conducting wire and signal processing module, the output end and speaker of signal processing module The input terminal of system connects；Using the structure, when playing key, the position that piano hammerhead is equipped with magnet can be worn in coil Coil inside plane and the movement far from coil inside plane are crossed, the speed signal of hammerhead is then converted by electricity by coil Pressure number is simultaneously transmitted to signal processing module, then transfers corresponding tone color in bank by the voltage signal, then pass through speaker system It unites 8 sounding, since in the utility model, the not instead of string that piano taps passes through the coil of circuit board, prevents hammerhead in this way Loss and string tension variation, cause piano sound, accuracy in pitch variation, reduce, without being needed as piano Carry out the whole sound of temperament after sale.

Specifically, the position that hammerhead is equipped with magnet is movably arranged on above coil, in this way so that hammerhead is equipped with magnetic The position of iron can be done in coil across coil inside plane and far from the movement of coil inside plane.

Including microcontroller 8, the data terminal of microcontroller 8 is connect with the signal output end of signal processing module 5, at signal Manage the crest voltage that module 5 obtains voltage signal, including bank, microcontroller 8 extracts tone color from bank, and according to mentioning Tone color is taken to control 6 sounding of sound system, it is the highest point of hammerhead speed that the crest voltage is corresponding, can improve acquisition letter well Number accuracy, so that corresponding tone color can accurately be obtained from bank.

Specifically, will locate after the signal processing module amplifies voltage signal, filters, sampling, quantifying, encoding Electric signal after reason is transmitted to microcontroller.

Further, the relative position of adjustable coil and hammerhead, it is ensured that signal just hits string point in hammerhead arrival When generate, hitting string point is inside primary sound piano, and hammerhead strikes the position on string, can precisely simulate raw steel qin in this way and hit It the case where string, allows user's preferably upper hand, makes during player is easier to be immersed in and plays.

Using the above structure, following work step is used when playing:

1) when playing key, cause hammer motion；

2) speed when position that hammerhead is equipped with magnet passes through coil is converted into voltage signal and is transmitted at signal by coil Manage module；

3) digital signal is changed into after signal processing module handles voltage signal, and the signal is transmitted to microcontroller Device, microcontroller transfers corresponding tone color in bank by the voltage signal, then passes through sound box system sounding.

Optionally, bank is the tone color storing data library of digitized processing.

In step 3), when microcontroller transfers corresponding tone color in bank by the voltage signal, while should The tone color transferred separately stores, and the tamber data of storage is reduced into playing music.It is able to achieve the undistorted record of playing music System.

In the recording mode that another is played, including key scanning means, key scanning means and microcontroller Data terminal connection, in the step 1), when playing key, causes hammer motion, meanwhile, key scanning means incudes player To the key information of key, and by key information be conveyed to microcontroller carry out data storage, can also realize play it is undistorted It records.

Wherein, using including key scanning means, the mode of the data terminal connection of key scanning means and microcontroller, packet Include strip circuit plate, be disposed at least two coil on strip circuit plate, multiple coils respectively with the input of multiplexer End connection, microcontroller by the output signal of multiplexer from bank called data so that sound box system sounding.? During piano performance, when there is tenuto situation in the case where multitone occur while playing and multiple tone colors, it may be desirable to parallel hair The technical issues of it is inadequate to can effectively prevent polyphony using the structure, tone color is easily lost when playing for sound.

Claims (7)

1. a kind of fender using hammerhead velocity sensor, it includes key (1), hammerhead (2), it is characterised in that: the string Mallet (2) is equipped with magnet (4), including coil (3), and the position that hammerhead (2) is equipped with magnet is movably arranged on above coil (3), Coil (3) is connect by conducting wire with the input terminal of signal processing module (5), the output end of signal processing module (5) and speaker system The input terminal connection of system (6).

2. the fender according to claim 1 using hammerhead velocity sensor, it is characterised in that: including microcontroller (8), the data terminal of microcontroller (8) is connect with the signal output end of signal processing module (5).

3. the fender according to claim 1 or 2 using hammerhead velocity sensor, it is characterised in that: at the signal After reason module amplifies voltage signal, filters, sampling, quantifying, encoding, by treated, electric signal is transmitted to microcontroller (8).

4. the fender according to claim 1 or 2 using hammerhead velocity sensor, it is characterised in that: adjustment coil (3) With the relative position of hammerhead (2), it is ensured that signal just generation when hammerhead (2) reach and hit string point.

5. the fender according to claim 2 using hammerhead velocity sensor, it is characterised in that: scan and fill including key It sets (9), key scanning means (9) is connect with the data terminal of microcontroller.

6. the fender according to claim 1 or 2 using hammerhead velocity sensor, it is characterised in that: including bar shaped electricity Road plate (7) is disposed at least two coil (3) on strip circuit plate (7), multiple coils (3) respectively with multiplexer Input terminal connection, microcontroller (8) by the output signal of multiplexer from bank called data so that sound box system (6) sounding.

7. the fender according to claim 1 using hammerhead velocity sensor, it is characterised in that: on the hammerhead (2) Position equipped with magnet (4) can be done in coil (3) across coil (3) inner plane and far from coil (3) inner plane Movement.