CN202167226U

CN202167226U - Semi-automatic piano tuning device based on electronic tag

Info

Publication number: CN202167226U
Application number: CN201020285222XU
Authority: CN
Inventors: 谭福生; 许文辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-08-09
Filing date: 2010-08-09
Publication date: 2012-03-14
Anticipated expiration: 2020-08-09

Abstract

The utility model relates to a semi-automatic piano tuning device based on an electronic tag. The semi-automatic piano tuning device includes a motor, planetary reducers, a power transmission mechanism of a turbine and worm mechanism, a controller, an electronic tag, and a guide rail type piano tuning mechanism, wherein the power transmission mechanism is fixed on the guide rail type piano tuning mechanism, and the electronic tag is pasted to a piano string bridge in a circular sleeve mode. The tuning method is that: a controller electronic tag module reads the set frequency of a to-be-tuned string bridge, a pickup reads the to-be-tuned string bridge to acquire a software measuring frequency, the algorithm of a controller central processing unit converts a frequency difference into a transmitting command of a certain step length driving value, and the transmitting command is transmitted to the power transmission mechanism, so the semi-automatic adjustment of the string bridge is completed. The step length can be flexibly adjusted according to the precision and the experience, so the gradual adjustment of the piano string bridge is realized. The semi-automatic piano tuning device saves the muscle power of the hand-operated adjustment, and the semi-automatic piano tuning device is a special-purpose high precision tuning tool for a professional tuner and a tuning fan.

Description

A kind of semi-automatic piano organ stop based on electronic tag

Technical field

The utility model relates to piano and peg musical instrument technical field is arranged, the professional tuning instrument of being made up of programmable servo mechanism, Programmable Logic Controller, electronic tag and guide tracked piano tuning mechanism based on the semi-automatic piano organ stop of electronic tag.

Background technology

Traditional piano organ stop adopts is that the shortcoming of the non-coaxial torsion design of " L " type tuning spanner begins to obtain extensive concern, and this has been carried out a large amount of improvement.But most of the improvement also do not walked out manual restriction, and particularly the piano string sign indicating number is numerous, and the frequency that the string sign indicating number is corresponding is remembered and taken very much energy, and is also mistaken easily.Therefore introduce semi-automatic method even automated process is a main trend of following piano tuning; And pass through electronic label technology; Needn't calculate the frequency of string sign indicating number, and be placed on energy in the high-accuracy string sign indicating number tuning, become urgent problem that solves of piano tuning.

The utility model content

The purpose of the utility model provides a kind of semi-automatic piano organ stop based on electronic tag, is characterized in that simple to operate, laborsaving, semi-automatic, tuning precision is high, peg does not have distortion after the tuning.In use, can realize the semi-automatic continuous fine adjustment control of piano tuning.Be fit to piano tuning duty dealer and tuning fan and can both conveniently use piano tuning instrument.

For realizing above-mentioned purpose, design a kind of semi-automatic piano organ stop based on electronic tag, its composition comprises the professional tuning instrument that controller, Poewr transmission mechanism, electronic tag and guide tracked piano tuning mechanism part are formed.

It is characterized in that this organ stop comprises Poewr transmission mechanism, controller, electronic tag and guide tracked piano tuning mechanism, wherein electronic tag is fixed on the string sign indicating number, and controller, Poewr transmission mechanism and guide tracked piano tuning mechanism are integrated in one.

The characteristics that it is characterized in that guide tracked piano tuning mechanism are on guide rail orbit determination, are connected with the string sign indicating number that needs tuning through interior anistree piano driving end, can carry out coaxial adjusting to peg, and the semi-circular stop sleeve on the moving rail of guide rail links to each other with another string sign indicating number.

It is characterized in that controller is made up of controller CPU, acoustic pickup, electronic tag read module, power module, keyboard and button, display unit, drive signal and feedback signal module; The controller CPU is made up of single-chip microcomputer, DSP or other embedded chips; Electronic module tag reads waits to regulate the frequency that the string sign indicating number is set; Acoustic pickup reads waits that the reference frequency of regulating the string sign indicating number obtains the software measurement frequency, the frequency of setting the string sign indicating number do difference with the software measurement frequency and convert in the motor-driven amount transmission drive signal Poewr transmission mechanism of a fixed step size motor.

It is characterized in that Programmable Logic Controller sends instructions to the motor in the Poewr transmission mechanism, the feedback signal module to the controller central control unit, realizes position closed loop control to position feed back signal through being installed in the position transducer on the motor.

It is characterized in that Poewr transmission mechanism comprises that motor, planetary gear reduction box, main shaft, turbine and worm mechanism form and coaxial connection, be connected the amplification that realizes moment of torsion with interior anistree piano driving end is coaxial thereby turbine and worm mechanism is terminal.

It is characterized in that electronic tag is sleeved on the piano string sign indicating number with ring-like pattern, read, and convert string sign indicating number setpoint frequency into through the electronic tag of controller to the string sign indicating number.

The semi-automatic piano organ stop tuning flow process based on electronic tag of the utility model is following: at first the electronic tag value that reads on the string sign indicating number of the electronic module tag of controller obtains string sign indicating number setpoint frequency; And the software measurement frequency that records with acoustic pickup is poor; And drive motor is with tight string of a fixed step size and Song Xian; The motor of band scrambler can feed back to the Programmable Logic Controller CPU to the rotation amount of reality, thereby realizes the accuracy that motor is carried out through closed-loop control.Again through the acoustic pickup survey frequency, drive motor carries out tight string and Song Xian again, and repeatedly the time, reduce step-length and continue to regulate within the accuracy rating that allows with Song Xian when tight string occurring, thus the gradual adjusting of realization piano tuning.

This method has been liberated the repeatedly reckoning of piano tuning personnel to the frequency of each string sign indicating number, and its programmable semi-automatic adjusting has solved the muscle power of manual adjustments, has improved precision and the dirigibility regulated through revising step-length simultaneously.That this piano organ stop has is laborsaving, convenient, flexible, precision is high, peg does not have the distortion advantage after the tuning, is a kind of professional tuner, progressive specific purpose tool that improves the tuning precision of tuning fan of being suitable for.

Description of drawings

Fig. 1. be the structural map of the semi-automatic organ stop of the utility model.

Fig. 2. be the controller module composition diagram of the utility model.

Fig. 3. be the control system block diagram of the semi-automatic organ stop of the utility model.

Appointment Fig. 1 is a Figure of abstract.

Referring to anistree piano driving end, 2 turbine and worm speed reduction units, 3 main shafts, 4 motors, B1 planetary reduction gear, B2 planetary reduction gear, the moving rail of A1 guide rail, A2 guide rail orbit determination, 5 semi-circular stop sleevees, 6 position transducers, 7 electronic tags, C1 string sign indicating number, C2 string sign indicating number, D controller in Fig. 1 .1.

Referring to Fig. 2 .21 electronic tag read module, 22 acoustic pickups, 23 keyboards and button, 24 controller CPU, 25 feedback signals, 26 drive signals, 27 display units, 28 power modules.

Wait to regulate string sign indicating number electronic tag, 35 reducing gears, 36 controller CPU, 37 motors, 38 acoustic pickups, 39 signal feedback referring to Fig. 3 .31 string sign indicating number setpoint frequency, 32 software measurement frequencies, 33 electronic tag read modules, 34.

Embodiment

Referring to Fig. 1,4 motors, position transducer 6 are connected through power lead, data line with controller D, do position closed loop control through the feedback signal of 4 motions of controller D control motor and delivering position sensor 6.

Referring to Fig. 2, controller module divides four parts: importation, controller CPU 24, output and power module 28.The importation comprises electronic tag read module 21, acoustic pickup 22, keyboard and button 23.Output comprises feedback signal 25, drive signal 26, display unit 27; Wherein feedback signal 25 is the position feed back signal 25 that obtains through position transducer 6, and drive signal 26 is the fixed step size drive amount through the algorithm computation of controller CPU 24.

Referring to Fig. 3, the acoustic pickup 38 in the D controller obtains software measurement frequency 32, and the electronic tag read module 33 among the controller D reads the string sign indicating number setpoint frequency 31 of waiting to regulate the string sign indicating number.Software measurement frequency 32 is input to controller CPU 36 with string sign indicating number setpoint frequency 31; Convert difference on the frequency into through algorithm the drive signal of motor 37; Motor 37 transmits feedback signal 39 to controller CPU 36, thereby accomplishes the driving accurately of motor 37.

Certain the piano tuning fan that the tuning experience was arranged, utilization is carried out tuning based on the semi-automatic piano organ stop of electronic tag to personal KAWAI K-3 piano.What adopted pickup, test section is the computer software system.What electronic tag adopted is anti-metal electronic tag.This adjustment content is that middle C is adjusted (its standard pitch value 440hz); At first handheld reader is near the string sign indicating number; Along with the position is different; Hand-held CR shows key numbering and the standard audio numerical value that different string sign indicating numbers are corresponding, shows that near the middle position card reader " C4 440hz ", this string sign indicating number promptly are the C4 middle Cs of preparation adjustment, and anistree piano driving end is inserted on the first string sign indicating number of top in 1.Through audition and detection, 1# string actual measurement 437.7hz, 2# string actual measurement 439.5hz, 3# string actual measurement 436.30hz.At first 2 and 3 strings end sound, and slip A1 guide rail moves rail, and semi-circular stop sleeve connects the string sign indicating number as fulcrum.Controller is set 24000 of umber of pulses, direction, rotating speed and is got system default value, and forward, 250 rev/mins is pressed " execution button ", at this moment, D controller display screen shows AD feedback signal curve and actual rotation angle " 2.25 degree ".Hit string once more and measure, actual measurement 339.20hz because under the 1hz error, press " partial adjustment key " 4 times, hits string again and measures, and surveys No. 1 string 440hz, takes off spanner.Same step, harmonize 2#, 3# string.After adjustment, the C button is a pure tone (440hz), and when shared 1 minute and 50 seconds, this tuning finished.

Above embodiment only supplies to explain the usefulness of the utility model; But not to the restriction of the utility model; The technician in relevant technologies field under the situation of spirit that does not break away from the utility model and scope, can also make various conversion or modification; Therefore all technical schemes that are equal to also should belong to the category of the utility model, should be limited each claim.

Claims

1. semi-automatic piano organ stop based on electronic tag; It is characterized in that this organ stop comprises Poewr transmission mechanism, controller, electronic tag and guide tracked piano tuning mechanism; Wherein electronic tag is fixed on the string sign indicating number, and controller, Poewr transmission mechanism and guide tracked piano tuning mechanism are integrated in one.

2. piano organ stop according to claim 1; The characteristics that it is characterized in that guide tracked piano tuning mechanism are on guide rail orbit determination (A2); Be connected with the string sign indicating number (C1) that needs tuning through interior anistree piano driving end (1); Can carry out coaxial adjusting to peg, the semi-circular stop sleeve (5) that guide rail moves on the rail (A1) links to each other with another string sign indicating number (C2).

3. piano organ stop according to claim 1; It is characterized in that controller is made up of controller CPU (24), acoustic pickup (22), electronic tag read module (21), power module (28), keyboard and button (23), display unit (27), drive signal (26) and feedback signal (25) module; Controller CPU (24) is made up of single-chip microcomputer, DSP or other embedded chips; Electronic module tag (21) reads waits to regulate the frequency that the string sign indicating number is set; Acoustic pickup (22) reads waits that the reference frequency of regulating the string sign indicating number obtains the software measurement frequency, the frequency of setting the string sign indicating number do difference with the software measurement frequency and convert in motor-driven amount transmission drive signal (26) Poewr transmission mechanism of a fixed step size motor.

4. piano organ stop according to claim 1; It is characterized in that Programmable Logic Controller sends instructions to the motor (37) in the Poewr transmission mechanism; Feedback signal (39) module is through being installed in the position transducer on the motor; To controller central control unit (36), realize position closed loop control to position feed back signal.

5. piano organ stop according to claim 1; It is characterized in that Poewr transmission mechanism comprises that motor (4), planetary gear reduction box (B2), main shaft (3), turbine and worm mechanism (2) form and coaxial connection, turbine and worm mechanism terminal (2) with interior anistree piano driving end (1) thus coaxially be connected the amplification that realizes moment of torsion.

6. piano organ stop according to claim 1 is characterized in that electronic tag (7) is sleeved on the piano string sign indicating number (C1) with ring-like pattern, reads through the electronic tag (7) of controller to the string sign indicating number, and converts string sign indicating number setpoint frequency into.