CN109443618A - A kind of soft pedal force checking device - Google Patents
A kind of soft pedal force checking device Download PDFInfo
- Publication number
- CN109443618A CN109443618A CN201811522187.6A CN201811522187A CN109443618A CN 109443618 A CN109443618 A CN 109443618A CN 201811522187 A CN201811522187 A CN 201811522187A CN 109443618 A CN109443618 A CN 109443618A
- Authority
- CN
- China
- Prior art keywords
- singlechip controller
- pressure sensor
- acceleration transducer
- soft pedal
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
Abstract
The invention discloses a kind of soft pedal force checking devices, including singlechip controller, input key, pressure sensor, acceleration transducer, liquid crystal display；Inside hand-held detector, input key, pressure sensor, acceleration transducer are connect with the input terminal of singlechip controller for the singlechip controller setting, the output end connection of liquid crystal display and singlechip controller；Acceleration transducer is connect with singlechip controller by conducting wire, and setting is inside hand-held detector；Input key, liquid crystal display is arranged on detector surface；Pressure sensor is arranged in hand-held detector bottom, and is connect with singlechip controller by conducting wire；The present invention detects acceleration by acceleration transducer, pedal displacement is calculated according to acceleration singlechip controller, to corresponding with the pressure sensor at current time pressure detected, to obtain the corresponding relationship of position and pressure, and then the case where compare left and right soft pedal power.
Description
Technical field
The present invention relates to piano technical field of quality detection, specially a kind of soft pedal force checking device.
Background technique
Generally all there are three pedals for upright piano, it may be assumed that intermediate pedal, left-hand tread plate and right-hand tread plate.Intermediate pedal has reduction
The effect of sound.Left pedal is also known as off beat pedal or soft pedal, can weaken volume and change tone color, right pedal is also referred to as strong
Sound pedal, it can extend musical sound and enhancing acoustics.
Piano in process of factory production, especially piano exfactory inspection when, need the power to left and right pedal to detect
Correction, to guarantee that left and right power difference if pressure difference is excessive will affect piano in a certain range (usually error 10%)
It uses, needs to carry out dynamics adjustment.In practice, found in the sampling observation of third party testing agency, the pedal force of many piano producers
Left and right difference is undesirable away from big.Soft pedal can increase with the amplitude of pushing, and reaction force continues to increase, until pedal
The force of the breath that contacts to earth can reduce suddenly.The measurement of left and right pedal force seeks to measure pedal and contacts to earth the power of eve.Conventional method is used
Ruler, pressure gauge (or spring scale) carry out power measurement to it.In aforementioned process, power can constantly increase, and pedal contacts to earth moment,
Pedal is resisted by ground.Power can become smaller suddenly again.Therefore be difficult to accurately measure pedal contact to earth eve power size.
Summary of the invention
The technical problem to be solved by the present invention is to piano or so pedal need to guarantee its power difference in 10%, existing equipment without
Method accurately measures, and unqualified so as to cause piano quality, product qualification rate is low, provides a kind of soft pedal force checking device,
To solve the above problems.
In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:
The present invention provides a kind of soft pedal force checking device, including singlechip controller, input key, pressure sensing
Device, acceleration transducer, liquid crystal display；The singlechip controller setting inputs key, pressure inside hand-held detector
Sensor, acceleration transducer are connect with the input terminal of singlechip controller, liquid crystal display and singlechip controller it is defeated
Outlet connection；Acceleration transducer is connect with singlechip controller by conducting wire, and setting is inside hand-held detector；Input is pressed
Key, liquid crystal display are arranged on hand-held detector surface；Pressure sensor be arranged in hand-held detector bottom, and with single-chip microcontroller control
Device processed is connected by conducting wire.
As a preferred technical solution of the present invention, in detection process, hand-held detector bottom is fixed on soft pedal
Joining distal ends touch on upper extremity, pressure sensor and soft pedal, and pressure sensor detects the pressure of end on soft pedal
Signal, and transmit signals to singlechip controller.
As a preferred technical solution of the present invention, the pressure sensor, acceleration transducer regularly send detection
Signal sends one-time detection information into singlechip controller every a collection period time to singlechip controller；Acquisition
It is 0.05s~0.1s that range, which is arranged, in cycle time.
As a preferred technical solution of the present invention, the with good grounds acceleration sensing of singlechip controller enclosed inside
Device calculates the algorithm of displacement, according to the acceleration signal that acceleration transducer transmits, combination pressure sensor, acceleration transducer
The collection period time obtains the shift length of end on soft pedal.
As a preferred technical solution of the present invention, the singlechip controller is by pressure sensor every collection period
The pressure signal that time is transmitted be combined with each other with the displacement information calculated according to acceleration transducer, generates displacement and pressure pair
Answer related table.
As a preferred technical solution of the present invention, the pressure sensor is provided with three groups, is separately positioned on hand-held
Detector bottom different location, the pressure signal transmission of three groups of pressure sensors take three groups of data average into singlechip controller
Value is recorded.
As a preferred technical solution of the present invention, the acceleration transducer is pressure resistance type, and the MEMS silicon of use is micro-
Processing technology is fixed by welding in inside hand-held detector together with singlechip controller.
The beneficial effects obtained by the present invention are as follows being: the present invention passes through acceleration transducer by setting acceleration transducer
Binding time calculates detecting instrument shift length, while the pressure information institute that degree of displacement and pressure sensor are transmitted is right
It should get up, to obtain displacement and pressure correspondence table；Obtain the displacement and pressure of the left and right pedal on the same piano
Correspondence table is compared, to intuitively detect that the power of left and right pedal is poor, consequently facilitating being adjusted, guarantees to produce
Product qualification rate.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.
In the accompanying drawings:
Fig. 1 is overall structure of the present invention；
Figure label 1, singlechip controller；2, key is inputted；3, pressure sensor；4, acceleration transducer；5, liquid crystal
Display screen.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
In the description of the present invention, it should be noted that the orientation of the instructions such as term "vertical", "upper", "lower", "horizontal"
Or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, and
It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore
It is not considered as limiting the invention.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, it can manage as the case may be
Solve the concrete meaning of above-mentioned term in the present invention.
Embodiment: as shown in Figure 1, the present invention provides a kind of soft pedal force checking device, including singlechip controller 1,
Input key 2, pressure sensor 3, acceleration transducer 4, liquid crystal display 5；The setting of singlechip controller 1 is in hand-held inspection
It surveys inside instrument, input key 2, pressure sensor 3, acceleration transducer 4 are connect with the input terminal of singlechip controller 1, liquid
Crystal display screen 5 is connect with the output end of singlechip controller 1；Acceleration transducer 4 and singlechip controller 1 are connected by conducting wire
It connects, setting is inside hand-held detector；Input key 2, liquid crystal display 5 is arranged on hand-held detector surface；Pressure sensor 3
It is arranged in hand-held detector bottom, and is connect with singlechip controller 1 by conducting wire.
Further, in detection process, hand-held detector bottom is fixed on soft pedal upper extremity, pressure sensor 3
It is touched with joining distal ends on soft pedal, pressure sensor 3 detects the pressure signal of end on soft pedal, and transmits signals to
Singlechip controller 1.
Further, the pressure sensor 3, acceleration transducer 4 regularly send detection signal to singlechip controller
1, every a collection period time, one-time detection information is sent into singlechip controller 1；Range is arranged in the collection period time
For 0.05s~0.1s.
Further, the with good grounds acceleration transducer of 1 enclosed inside of singlechip controller calculates the algorithm of displacement, root
According to the acceleration signal that acceleration transducer 4 transmits, combination pressure sensor 3,4 collection period time of acceleration transducer are obtained
Obtain the shift length of end on soft pedal.
Further, the singlechip controller 1 believes the pressure that pressure sensor 3 is transmitted every the collection period time
It number be combined with each other with the displacement information calculated according to acceleration transducer 4, generates displacement and pressure correspondence table.
Further, the pressure sensor 3 is provided with three groups, is separately positioned on hand-held detector bottom different location,
The pressure signal transmission of three groups of pressure sensors 3 takes three groups of statistical averages to be recorded into singlechip controller 1.
Further, the acceleration transducer 4 is pressure resistance type, the MEMS silicon micromachining technology of use, with single-chip microcontroller control
Device 1 processed is fixed by welding in together inside hand-held detector.
Specific: for the setting of pressure sensor 3 in hand-held detector bottom, acceleration transducer 4 and singlechip controller 1 are equal
Setting is inside hand-held detector；Input key 2, liquid crystal display 5 are arranged at hand-held detector surface, and input key 2,
Pressure sensor 3, acceleration transducer 4 are connect with the input terminal of singlechip controller 1, liquid crystal display 5 and single-chip microcontroller control
The output end of device 1 processed connects, and is connected by conducting wire.
In use, by the way that hand-held detector bottom is fixed on pedal soft pedal upper extremity, pressure sensing
Device 6 is in contact with soft pedal；Soft pedal is pressed, soft pedal is made to contact ground, instrument is opened by input key 2 later
It measures, instrument moves up under the induced effect of soft pedal, while pressure sensor 3 detects pedal to the pressure of instrument
Power, 4 detecting instrument of acceleration transducer with pedal travel acceleration；Concurrently set pressure sensor 3, acceleration transducer
4 send primary information data to singlechip controller 1 every collection period time, singlechip controller 1 according to the time with
Acceleration calculates displacement according to the algorithm of acceleration transducer calculating displacement by enclosed inside, so that it is determined that pedal institute
Mobile displacement, and then displacement and pressure correspondence table is generated, thus when obtaining pedal movement different location, suffered pressure
Size；By the displacement and pressure correspondence table for comparing left and right pedal, it will be able to get information about the power difference feelings of left and right pedal
Condition, consequently facilitating manufacturer is adjusted.
Pressure sensor 3 is arranged three groups, measures pressure condition jointly, data are relatively reliable；Acceleration transducer 4 is pressure drag
Formula, the MEMS silicon micromachining technology of use is small in size, low in energy consumption, is easily installed fixation.
It is worth noting that: whole device realizes control to it by main control button, sets since control button is matched
Standby is commonly used equipment, belongs to existing Changshu technology, details are not described herein its electrical connection and specific circuit structure.
Finally, it should be noted that these are only the preferred embodiment of the present invention, it is not intended to restrict the invention, although
Present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, still can be right
Technical solution documented by foregoing embodiments is modified or equivalent replacement of some of the technical features.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (7)
1. a kind of soft pedal force checking device, which is characterized in that including singlechip controller (1), input key (2), pressure
Sensor (3), acceleration transducer (4), liquid crystal display (5)；Singlechip controller (1) setting is in hand-held detector
Portion, input key (2), pressure sensor (3), acceleration transducer (4) are connect with the input terminal of singlechip controller (1),
Liquid crystal display (5) is connect with the output end of singlechip controller (1)；Acceleration transducer (4) and singlechip controller (1) are logical
Conducting wire connection is crossed, setting is inside hand-held detector；Key (2), liquid crystal display (5) setting are inputted in hand-held detection instrument
Face；Pressure sensor (3) setting is connect in hand-held detector bottom, and with singlechip controller (1) by conducting wire.
2. a kind of soft pedal force checking device according to claim 1, which is characterized in that in detection process, hold inspection
It surveys instrument bottom and is fixed on soft pedal upper extremity, joining distal ends touch on pressure sensor (3) and soft pedal, pressure sensor
(3) pressure signal of end on soft pedal is detected, and transmits signals to singlechip controller (1).
3. a kind of soft pedal force checking device according to claim 1, which is characterized in that the pressure sensor (3),
Acceleration transducer (4) regularly sends detection signal and sends one every a collection period time to singlechip controller (1)
Secondary detection information is into singlechip controller (1)；It is 0.05s~0.1s that range, which is arranged, in the collection period time.
4. a kind of soft pedal force checking device according to claim 3, which is characterized in that the singlechip controller
(1) the with good grounds acceleration transducer of enclosed inside calculates the algorithm of displacement, is believed according to the acceleration of acceleration transducer (4) transmitting
Number, combination pressure sensor (3), acceleration transducer (4) collection period time, obtain soft pedal on end displacement away from
From.
5. a kind of soft pedal force checking device according to claim 4, which is characterized in that the singlechip controller
(1) pressure signal for being transmitted pressure sensor (3) every the collection period time with calculated according to acceleration transducer (4)
Displacement information be combined with each other, and generates displacement and pressure correspondence table.
6. a kind of soft pedal force checking device according to claim 1, which is characterized in that the pressure sensor (3)
Three groups are provided with, is separately positioned on hand-held detector bottom different location, the pressure signal transmission of three groups of pressure sensors (3) is extremely
Three groups of statistical averages are taken to be recorded in singlechip controller (1).
7. a kind of soft pedal force checking device according to claim 1, which is characterized in that the acceleration transducer
It (4) is pressure resistance type, the MEMS silicon micromachining technology of use is fixed by welding in hand-held inspection with singlechip controller (1) together
It surveys inside instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811522187.6A CN109443618A (en) | 2018-12-13 | 2018-12-13 | A kind of soft pedal force checking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811522187.6A CN109443618A (en) | 2018-12-13 | 2018-12-13 | A kind of soft pedal force checking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109443618A true CN109443618A (en) | 2019-03-08 |
Family
ID=65558570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811522187.6A Pending CN109443618A (en) | 2018-12-13 | 2018-12-13 | A kind of soft pedal force checking device |
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| CN (1) | CN109443618A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1457036A (en) * | 2003-05-21 | 2003-11-19 | 孙玮 | Piano keyboard acting photoelectronic digital detector |
| CN205541921U (en) * | 2016-04-13 | 2016-08-31 | 安徽克洛斯威智能乐器科技有限公司 | Electronic intelligence piano footboard governing system |
| CN107305155A (en) * | 2016-04-21 | 2017-10-31 | 上海汽车集团股份有限公司 | Pedal performance detecting system and method |
| CN207052285U (en) * | 2017-08-16 | 2018-02-27 | 昊智信息技术（深圳）有限公司 | A kind of piano key dynamics harvester |
| CN207676625U (en) * | 2018-01-19 | 2018-07-31 | 西北民族大学 | One kind riding dynamics adjusting apparatus for soft pedal |
| CN108701444A (en) * | 2016-01-15 | 2018-10-23 | 森兰信息科技（上海）有限公司 | A kind of method and system that musical instruments are calibrated automatically |
-
2018
- 2018-12-13 CN CN201811522187.6A patent/CN109443618A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1457036A (en) * | 2003-05-21 | 2003-11-19 | 孙玮 | Piano keyboard acting photoelectronic digital detector |
| CN108701444A (en) * | 2016-01-15 | 2018-10-23 | 森兰信息科技（上海）有限公司 | A kind of method and system that musical instruments are calibrated automatically |
| CN205541921U (en) * | 2016-04-13 | 2016-08-31 | 安徽克洛斯威智能乐器科技有限公司 | Electronic intelligence piano footboard governing system |
| CN107305155A (en) * | 2016-04-21 | 2017-10-31 | 上海汽车集团股份有限公司 | Pedal performance detecting system and method |
| CN207052285U (en) * | 2017-08-16 | 2018-02-27 | 昊智信息技术（深圳）有限公司 | A kind of piano key dynamics harvester |
| CN207676625U (en) * | 2018-01-19 | 2018-07-31 | 西北民族大学 | One kind riding dynamics adjusting apparatus for soft pedal |
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Application publication date: 20190308 |