CN101866645A - Piano keyboard vibration playing instrument - Google Patents
Piano keyboard vibration playing instrument Download PDFInfo
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- CN101866645A CN101866645A CN 201010210572 CN201010210572A CN101866645A CN 101866645 A CN101866645 A CN 101866645A CN 201010210572 CN201010210572 CN 201010210572 CN 201010210572 A CN201010210572 A CN 201010210572A CN 101866645 A CN101866645 A CN 101866645A
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Abstract
The invention relates to a piano keyboard vibration playing instrument, which comprises a controller, a piano key striking device and a piano key reset sensor, wherein the piano key striking device and the piano key reset sensor are respectively connected with the controller through a first data wire and a second data wire, the piano key reset sensor detects the position of piano keys and transmits the detection signal to the controller through the second data wire, and the controller transmits a working signal for the piano key striking device to strike the piano keys through the first data wire according to the detection signal transmitted by the piano key reset sensor. The piano keyboard vibration playing instrument can simulate the force and frequency played by people. By adopting the piano keyboard vibration playing instrument to strike the piano keyboard for a given times and/or a given frequency so as to test the variation of the tone of the piano keyboard before and after the striking, so the intonation stability of the piano from a piano factory can be rapidly judged on the spot.
Description
Technical field
The present invention relates to a kind of pick-up unit of accuracy in pitch stability of piano, the dynamics during particularly a kind of can the anthropomorphic dummy performance and the piano keyboard vibration playing instrument of frequency.。
Background technology
Piano is as the king of musical instrument, more and more be subjected to liking of people, be widely used at present, the raising of its quality also more and more comes into one's own, for needs and the effectively guidance production that adapts to development, when revision piano national standard, piano accuracy in pitch stability was required to propose in standard as an important indicator in 2008.The quality of piano accuracy in pitch stability is subjected to the influence of several factors, such as: humiture changes changes to the influence of accuracy in pitch soundboard; The elongation property that piano wire itself has is to the influence of accuracy in pitch; The size of string shaft and peg friction force is to influence of accuracy in pitch or the like.Often after using after a while, accuracy in pitch can change piano, and therefore, accuracy in pitch stability is one of important indicator comprehensively weighing the piano product quality.
The accuracy in pitch stability approach of testing piano in the prior art is: piano was left standstill 15 days, detect the stability of piano accuracy in pitch with this variable quantity that leaves standstill the twice accuracy in pitch numerical value in phase front and back.On the one hand this method needs the long time to make judgement to the accuracy in pitch stability of finished product piano; On the other hand because the piano volume is bigger, this kind method can take more space, make that economy, the rationality of this detection method are relatively poor, for example: if nonlocal Piano Factory finished product piano is called in musical instrument inspection center then expense is higher, musical instrument testing agency also need prepare corresponding place, and humiture environment difference is bigger, and production standard and examination criteria should not be unified; The scene is detected also unactual one by one if musical instrument testing agency sends someone.Therefore, press for a kind of method and apparatus that can do fast detecting to the accuracy in pitch stability of Piano Factory's finished product piano, and can carry out the scene to the finished product piano in Piano Factory and detect, take up room little.
Summary of the invention
Technical matters to be solved by this invention is: at the technological deficiency of piano accuracy in pitch Detection of Stability in the prior art, dynamics when a kind of can the anthropomorphic dummy performance is provided and the piano keyboard vibration playing instrument of frequency, by described piano keyboard vibration playing instrument fingerboard is carried out impacting of certain number of times and/or certain frequency, the variable quantity of the accuracy in pitch of tested steel piano key board before and after impacting, and then can on-the-spot make judgement to the accuracy in pitch stability of Piano Factory's finished product piano apace.
The present invention is achieved through the following technical solutions: a kind of piano keyboard vibration playing instrument, described piano keyboard vibration playing instrument comprises controller, key beating unit and key reseting sensor, described key beating unit and described key reseting sensor are respectively by first data line, second data line is connected with described controller, described key reseting sensor detects the position of key and detection signal is passed to described controller by described second data line, and described controller sends the working signal that impact key by described first data line to described key beating unit according to the detection signal that described key reseting sensor passes over.
Above-mentioned piano keyboard vibration playing instrument, described controller are single chip microcomputer or Programmable Logic Controller.
Above-mentioned piano keyboard vibration playing instrument, described key reseting sensor is a photoelectric detection system.
Above-mentioned piano keyboard vibration playing instrument, described key beating unit are cam beating unit, electromagnetism beating unit or pneumatic beating unit.
Above-mentioned piano keyboard vibration playing instrument, described key beating unit is pneumatic beating unit, it comprises gas compressor, solenoid valve, cylinder manifold and impacts cylinder, described solenoid valve is installed on the described cylinder manifold, described gas compressor is connected with described cylinder manifold by tracheae, the described cylinder that impacts is connected with described solenoid valve by tracheae, and described solenoid valve is connected with described controller by described first data line.
Above-mentioned piano keyboard vibration playing instrument, described key reseting sensor is an infrared sensing switch.
Above-mentioned piano keyboard vibration playing instrument, 12 keys of a sound group of corresponding one by one piano are respectively arranged with 12 described cylinders that impact on working tray, and 12 keys of a sound group of corresponding one by one piano are respectively arranged with 12 described key reseting sensors on described working tray, and corresponding one by one 12 described cylinders that impact are respectively arranged with 12 described solenoid valves on described cylinder manifold.
Above-mentioned piano keyboard vibration playing instrument, described solenoid valve and described cylinder manifold all are arranged on the described working tray.
Piano keyboard vibration playing instrument of the present invention has following beneficial technical effects: (1) utilizes piano keyboard vibration playing instrument of the present invention with certain dynamics fingerboard to be impacted continuously, the dynamics and the frequency of imitation staff, reach shaking continuously of piano string played, make piano be in realistic user mode, after playing number of times through shaking of setting, accuracy in pitch numerical value before and after test is shaken and played is with the accuracy in pitch stability of accuracy in pitch variable quantity measurement piano.(2) method of utilizing piano keyboard vibration playing instrument of the present invention to shake continuously to play replaces piano left standstill 15 days method, not only can realize on-the-spot fast the detection, effective minimizing takies time, space, but also can carry out torture test to the sensitivity of fingerboard, the permanance of hammered string instrument.(3) those skilled in the art can realize the dynamics that impacts of fingerboard is played near staff the dynamics of piano by the parameters of regulating the key beating unit, for example when the key beating unit is pneumatic beating unit, can realizes impacting cylinder by the specifications parameter of selecting to impact cylinder, solenoid valve, cylinder manifold and gas compressor the dynamics that impacts of key is approached the dynamics that staff is played piano.(4) make key operate to hitting of total travel and play, that is: make hit for the first time play finish after, after treating to be resetted fully by the key hitting under, row hits and play for the second time again, thus realization piano key and hitting of hammerhead total travel are played string.(5) keyboard tablet and the LCD by controller manually is provided with, can be to sound group of piano (12 keys) but carry out hitting continuously of set point number and/or setting-up time and play.(6) piano keyboard vibration playing instrument volume of the present invention is little, in light weight, is easy to carry; And installation, easy to operate, one-piece construction is firm; Be very suitable for Piano Factory and the finished product piano is carried out the scene read soon to detect, and after testing finishes, piano is not had any damage.(7) piano keyboard vibration playing instrument of the present invention can lift key the momentary status that puts in place and notes, and sending into controller handles, impact the key that each is detected immediately, the number of times that the record key presses down and lifts, record the number of times that impacts of appointment always, stop to impact key, note each key simultaneously and realize the used time of number of times that impacts of appointment, thereby realized effectively string being carried out the purpose of fatigue detecting with the shortest time, also indirect detection the scattered error of movement limiting frequency distribute.(8) use controller to send fixed frequency as signal, impact key behind the power amplifier, utilizing photoelectric detection system that key is lifted the number of times that puts in place notes, and send into controller, behind the cycle of finishing appointment, controller is added up each key and is lifted the number of times that puts in place, thereby has realized key is carried out the purpose of frequency detecting.
Description of drawings
Fig. 1 is the structural representation that cylinder, rear supporting plate and butt grillage three are installed together that impacts that is used to impact black key of piano keyboard vibration playing instrument of the present invention shown in Figure 6;
Fig. 2 is the structural representation that cylinder, preceding supporting plate and preceding plate supporting frame three are installed together that impacts that is used to impact Bai Jian of piano keyboard vibration playing instrument of the present invention shown in Figure 6;
Fig. 3 is the piano structural representation;
Fig. 4 is the structural representation of the working tray of piano keyboard vibration playing instrument of the present invention shown in Figure 6;
Fig. 5 is the structural representation of another view directions of piano keyboard vibration playing instrument of the present invention shown in Figure 6;
Fig. 6 is used to impact the structural representation of fingerboard for piano keyboard vibration playing instrument of the present invention;
Fig. 7 is the inner structure synoptic diagram of the controller of piano keyboard vibration playing instrument of the present invention shown in Figure 6.
Wherein: 1-controller, 2-first data line, 3-second data line, the 5-solenoid valve, the 6-cylinder manifold, 7-impacts cylinder, the 8-working tray, 9-working tray base, 10-rear supporting plate, supporting plate before the 11-, the left back plate supporting frame of 12-, the right back plate supporting frame of 13-, the left front plate supporting frame of 14-, the right front plate supporting frame of 15-, 16-photoelectricity base, the 17-photoelectric tube, 18-cylinder manifold carriage, 19-system board, the 20-LCD, 21-system power supply, 22-keyboard tablet, 23-input/output switching plate, 24-first optical isolation, 25-input socket, the 26-power amplifier device, 27-accessory power outlet, 28-second optical isolation, the 29-black key, 30-builds in vain, 31-piano, 32-silica gel contact, plate supporting frame before the 33-butt grillage, 34-.
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Embodiment
The piano keyboard vibration playing instrument of present embodiment comprises controller 1, key beating unit and key reseting sensor.Described controller 1 is Programmable Logic Controller (PLC); Its inner structure comprises the LCD 20, system power supply 21, keyboard tablet 22 and the input/output switching plate 23 that are connected with system board 19 respectively as shown in Figure 7; Described input/output switching plate 23 is provided with second optical isolation 28 and input socket 25, also is provided with first optical isolation 21, power amplifier 26 and accessory power outlet 27.Described key reseting sensor is an infrared sensing switch, and concrete use is photoelectric tube 17 in the present embodiment, and described photoelectric tube 17 is connected with the input socket 25 of described controller 1 by second data line 3.Described key beating unit is pneumatic beating unit, it comprises gas compressor, solenoid valve 5, cylinder manifold 6 and impacts cylinder 7, described solenoid valve 5 is installed on the described cylinder manifold 6, described gas compressor is connected with described cylinder manifold 6 by tracheae, the described cylinder 7 that impacts is connected with described solenoid valve 5 by tracheae, and described solenoid valve 5 is connected with the accessory power outlet 27 of described controller 1 by described first data line 2.On working tray 8 12 keys of a sound group of corresponding piano one by one correspondence be provided with 12 described cylinders 7 that impact, and on described working tray 8 a sound group of corresponding piano 12 keys one by one correspondence be provided with 12 described key reseting sensors.The structural representation that cylinder 7, rear supporting plate 10 and butt grillage 33 threes are installed together that impacts that is used to impact black key 29 of piano keyboard vibration playing instrument in the present embodiment as shown in Figure 1 is used to detect the photoelectric tube 17 whether black key 29 reset and is fixedly mounted on described butt grillage 33 by photoelectricity base 16 with described rear supporting plate 10; The structural representation that cylinder 7, preceding supporting plate 11 and preceding plate supporting frame 34 threes are installed together that impacts that is used to impact Bai Jian 30 of piano keyboard vibration playing instrument in the present embodiment as shown in Figure 2, be used to detect photoelectric tube 17 that whether white key 30 reset by photoelectricity base 16 with preceding supporting plate 11 be fixedly mounted on described before plate supporting frame 34; As shown in Figure 6, assembly shown in Figure 1 and assembly shown in Figure 2 are fixedly mounted on the working tray shown in Figure 48 together, and described working tray 8 is fixedly mounted on the working tray base 9, and wherein the height of working tray 8 can be regulated.The structural representation that shown in Figure 6 is present embodiment piano keyboard vibration playing instrument and piano 31 shown in Figure 3 are combined together, described solenoid valve 5 and described cylinder manifold 6 are fixedly mounted on the described working tray 8 by cylinder manifold carriage 18.Shown in Figure 5 is the structural representation at another visual angle of present embodiment piano keyboard vibration playing instrument shown in Figure 6, wherein butt grillage 33 comprises left back plate supporting frame 12 and right back plate supporting frame 13, and described left back plate supporting frame 12 and described right back plate supporting frame 13 are fixedly mounted on respectively on the described working tray 8; Preceding plate supporting frame 34 comprises left front plate supporting frame 14 and right front plate supporting frame 15, and described left front plate supporting frame 14 and described right front plate supporting frame 15 also are installed in respectively on the described working tray 8; Fixedly connected with right back plate supporting frame 13 with left back plate supporting frame 12 respectively in the two ends of rear supporting plate 10, five black keys 29 of a sound group of corresponding piano are corresponding one by one on the described rear supporting plate 10 between described left back plate supporting frame 12 and the described right back plate supporting frame 13 is provided with five and impacts cylinder 7, and corresponding above-mentioned five black keys 29 one by one correspondence be provided with five photoelectric tubes 17; Before described fixedly connected with described right front plate supporting frame 15 with described left front plate supporting frame 14 respectively in the two ends of supporting plate 11, before described between described left front plate supporting frame 14 and described right front plate supporting frame 15 on the supporting plate 11 seven white keys 30 of a sound group of corresponding piano one by one correspondence be provided with seven and impact cylinder 7, and corresponding above-mentioned seven white keys 30 one by one correspondence be provided with seven photoelectric tubes 17.
The piano keyboard vibration playing instrument of present embodiment when in use, at first start gas compressor and described controller 1, when photoelectric tube 17 detects key and resets, the detection signal that key is resetted by described second data line 3 passes to controller 1, described controller 1 sends the working signal that impacts key by described first data line 2 to described solenoid valve 5 after receiving the detection signal that key resets at once, impacting cylinder 7 accordingly promptly closes on the silica gel contact of installing on key one end 32 by it and impacts key rapidly, when described photoelectric tube 17 detects key and does not reset, the detection signal that key is not resetted by described second data line 3 passes to controller 1, described controller 1 sends the signal that stops to impact key by described first data line 2 to described solenoid valve 5 after receiving the detection signal that key do not reset, and the described cylinder 7 that impacts stops to impact key immediately.Described silica gel contact 32 uses silica gel materials to make, and keystroke shakes to play and can not cause any damage to the key surface after finishing.
The piano keyboard vibration playing instrument of present embodiment verifies that empirical result is as follows respectively through national light industry musical instrument quality supervision inspection center on 7 upright pianos (121,123,125,132 etc. specification), 4 grand pianos (161,178 etc. specification) sample:
1. at first according to the requirement among " piano " standard GB/T10159-2008, each sound of one group of c1～b1 of small character of sample qin is carried out the accuracy in pitch test with 7050 types, 12 dish flash of light tone correcting devices (G-004), and record.
2. the piano keyboard vibration playing instrument of present embodiment is installed in the top of fingerboard, described silica gel contact 32 is impacted fingerboard fast with certain dynamics, with realization effectively shaking of piano string played, shake and play number of times and be set at 10000 times by standard-required, the actual time of playing of shaking is 19～30min, and it shakes, and to play frequency be every key 5.5 times/second～8.8 times/second.
3. after sample is played 10000 times through shaking, respectively each sound of one group of c1～b1 of small character of sample qin is tested, and logging test results, twice accuracy in pitch test result compares again, drawing shakes play before and after the accuracy in pitch error of piano be 1～7 cent.Compare with piano detection data in the past, totally 10 pianos (wherein 3 grand pianos) had carried out the detection of accuracy in pitch stability after leaving standstill through 15 days respectively at that time, and the accuracy in pitch error before and after it leaves standstill is 0～8 cent.By contrast, illustrate that keyboard shakes to play instrument and can replace the mode of leaving standstill, obtain effect same, saved the time, taken up room and personnel cost etc.
4. by model machine is surveyed, the described silica gel contact 32 that cylinder rod drives is 24.76N～29.63N in the dynamics of contact key key face moment; With the performance personnel generally the playing strength of staff be that 24.5N～29.4N compares, its keystroke shakes, and the dynamics of playing is suitable (can be realized impacting the adjustment of dynamics by adjusting pneumatic means according to actual needs, this is the common practise in pneumatic means field, no longer describes in detail at this).
5. the piano keyboard vibration playing instrument of present embodiment has used photoelectric technology control, after the described silica gel contact 32 of keystroke is finished the keystroke first time, can effectively control and carry out the keystroke second time again after key is resetted, effectively hit string thereby make hammerhead can both finish total travel at every turn.If the sensitivity of keyboard mechanism is relatively poor, certain key can not reset rapidly, and photoelectric control will be waited for resetting of key, can make 10000 times shake play time lengthening, just can directly reflect and discern the sensitivity of this key, this is another advantage of present embodiment piano keyboard vibration playing instrument.
6. the piano keyboard vibration playing instrument of present embodiment can be done the keystroke of specifying the frequency and shakes and play, 6 times/second, 8 times/second or 12 times/second, utilize the photoelectric control technology, the record key shakes at the setting keystroke and plays the omnidistance reset rate of number of times, automatically record piano key shakes that to play the reset rate function be that present various fingerboard checkout equipment is not available for this, and it can investigate reactivity and the adaptability of piano key under high frequency time condition.
7. the piano keyboard vibration playing instrument of present embodiment also can be played number of times with shaking and is set at 20,000 times, 30,000 times, and therefore the hitting power scalable also can do the detection of torture test to fingerboard, hammered string instrument.
8. owing to used silica gel material as the keystroke contact, keystroke shakes to play and damage is not caused on the key surface after finishing.Because the keystroke dynamics is moderate, also parts such as fingerboard, hammered string instrument, string is not caused damage.
9. as shown in Figure 6, owing to described working tray 8 and described working tray base 9 are arranged, in the installation of present embodiment piano keyboard vibration playing instrument, operating process, can not cause any damage to piano body as bracing frame.
10. the piano keyboard vibration playing instrument of present embodiment can carry out hitting of set point number simultaneously to 12 keys of each sound group of piano and plays, and goes for the upright piano and the grand piano of each specifications and models.
11. to play the machine contact be 2.7m/s～3.5m/s in the spot speed of contact key through entrusting the practical measurement of the defense-related science, technology and industry first metrology and measurement research centre (China one boat Great Wall, Beijing metrological testing technology research institute) to the described silica gel contact keystroke speed of the piano keyboard vibration playing instrument of present embodiment, shaking.
In some other embodiment, described controller 1 also can be single-chip microcomputer, and the function of its function ratio Programmable Logic Controller is more, can realize more function; Described key beating unit also can be cam beating unit or electromagnetism beating unit (magnetic force that magnetic core produces being hit key by solenoid), equally also can realize the purpose of the invention.But preferably the cylinder beating unit because the cylinder beating unit can be controlled the dynamics of impacting relatively easily and work long hours, impacts not decay of dynamics, can reach good unification in the dynamics and the frequency that key are impacted in the process.Described key reseting sensor also can be other photoelectric detection systems, equally also can realize the goal of the invention of the invention.
Claims (8)
1. piano keyboard vibration playing instrument, it is characterized in that, described piano keyboard vibration playing instrument comprises controller (1), key beating unit and key reseting sensor, described key beating unit and described key reseting sensor are respectively by first data line (2), second data line (3) is connected with described controller (1), described key reseting sensor detects the position of key and detection signal is passed to described controller (1) by described second data line (3), and described controller (1) sends the working signal that impact key by described first data line (2) to described key beating unit according to the detection signal that described key reseting sensor passes over.
2. piano keyboard vibration playing instrument according to claim 1 is characterized in that, described controller (1) is single chip microcomputer or Programmable Logic Controller.
3. piano keyboard vibration playing instrument according to claim 1 is characterized in that, described key reseting sensor is a photoelectric detection system.
4. piano keyboard vibration playing instrument according to claim 1 is characterized in that, described key beating unit is cam beating unit, electromagnetism beating unit or pneumatic beating unit.
5. according to the arbitrary described piano keyboard vibration playing instrument of claim 1 to 3, it is characterized in that, described key beating unit is pneumatic beating unit, it comprises gas compressor, solenoid valve (5), cylinder manifold (6) and impacts cylinder (7), described solenoid valve (5) is installed on the described cylinder manifold (6), described gas compressor is connected with described cylinder manifold (6) by tracheae, the described cylinder (7) that impacts is connected with described solenoid valve (5) by tracheae, and described solenoid valve (5) is connected with described controller (1) by described first data line (2).
6. piano keyboard vibration playing instrument according to claim 5 is characterized in that, described key reseting sensor is an infrared sensing switch.
7. piano keyboard vibration playing instrument according to claim 5 is characterized in that, 12 keys of a sound group of corresponding one by one piano are respectively arranged with 12 described cylinders (7) that impact on working tray (8); And 12 keys of a sound group of corresponding one by one piano are respectively arranged with 12 described key reseting sensors on described working tray (8); Corresponding one by one 12 described cylinders (7) that impact are respectively arranged with 12 described solenoid valves (5) on described cylinder manifold (6).
8. piano keyboard vibration playing instrument according to claim 7 is characterized in that, described solenoid valve (5) and described cylinder manifold (6) all are arranged on the described working tray (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102105724A CN101866645B (en) | 2010-03-30 | 2010-06-28 | Piano keyboard vibration playing instrument |
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| CN201010135773 | 2010-03-30 | ||
| CN201010135773.2 | 2010-03-30 | ||
| CN2010102105724A CN101866645B (en) | 2010-03-30 | 2010-06-28 | Piano keyboard vibration playing instrument |
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| CN101866645A true CN101866645A (en) | 2010-10-20 |
| CN101866645B CN101866645B (en) | 2012-06-13 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104361881A (en) * | 2014-10-23 | 2015-02-18 | 海伦钢琴股份有限公司 | Automatic vibrating playing machine of piano |
| CN105372045A (en) * | 2014-08-18 | 2016-03-02 | 宜昌金宝乐器制造有限公司 | Vibration play machine |
| CN108550356A (en) * | 2018-05-07 | 2018-09-18 | 河南师范大学 | A kind of automatically controlled pressure drive piano performance device |
| CN112991870A (en) * | 2021-02-25 | 2021-06-18 | 聊城大学 | Percussion beating pronunciation device for music teaching and use method thereof |
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| CN100576313C (en) * | 2003-03-27 | 2009-12-30 | 雅马哈株式会社 | The automatic playing keyboard instrument |
| CN201804541U (en) * | 2010-03-30 | 2011-04-20 | 北京乐器研究所 | Vibrating playing device for piano keyboard |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105372045A (en) * | 2014-08-18 | 2016-03-02 | 宜昌金宝乐器制造有限公司 | Vibration play machine |
| CN104361881A (en) * | 2014-10-23 | 2015-02-18 | 海伦钢琴股份有限公司 | Automatic vibrating playing machine of piano |
| CN108550356A (en) * | 2018-05-07 | 2018-09-18 | 河南师范大学 | A kind of automatically controlled pressure drive piano performance device |
| CN108550356B (en) * | 2018-05-07 | 2024-01-19 | 河南师范大学 | Electronic control pressure-driven piano playing device |
| CN112991870A (en) * | 2021-02-25 | 2021-06-18 | 聊城大学 | Percussion beating pronunciation device for music teaching and use method thereof |
| CN112991870B (en) * | 2021-02-25 | 2022-08-02 | 聊城大学 | Percussion beating pronunciation device for music teaching and use method thereof |
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| CN101866645B (en) | 2012-06-13 |
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