CN205091049U - Measurement device for sound wave wavelength - Google Patents
Measurement device for sound wave wavelength Download PDFInfo
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- CN205091049U CN205091049U CN201520902821.4U CN201520902821U CN205091049U CN 205091049 U CN205091049 U CN 205091049U CN 201520902821 U CN201520902821 U CN 201520902821U CN 205091049 U CN205091049 U CN 205091049U
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- sound
- piston
- wave length
- measurement mechanism
- loudspeaker
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- 238000005259 measurement Methods 0.000 title claims abstract description 21
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- 238000004458 analytical method Methods 0.000 claims description 3
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- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
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- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract 1
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- 230000001276 controlling effect Effects 0.000 description 2
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model discloses a measurement device for sound wave wavelength, including both ends open -ended body, installation piston and loudspeaker in the body, piston and loudspeaker set up relatively, connect pull rod one end on the side of piston, and the other end stretches out the body, still is equipped with the scale on the length direction of body, still include: power amplifier, frequency control switch, singlechip, oscillation circuit. The utility model discloses an intraductal piston changes the length of air column, finds out the resonance frequency of different sound waves, calculates the sound wave wavelength according to the length of air column, loudspeaker can be controllable to intraductal sound and the sound production time of sending the different frequency, the gas tightness of piston and inside pipe wall is good, can not hourglass sound at piston slip in -process, avoid producing measuring error, the length of air column in the readout tube that can convenient and fast, whole device is integrative to be set up, and the wholeness is good, simple structure, and convenient operation, the student can accomplish whole measurement process alone, and it is very easy that study is got up.
Description
Technical field
The utility model relates to a kind of measurement mechanism used in science and education activity.More particularly, the utility model relates to a kind of measurement mechanism of the wave length of sound for science and education activity.
Background technology
The propagation of vibration in air or other materials that sounding body produces is called sound wave, and sound wave is the mode of propagation of sound.Sound wave is a kind of mechanical wave, is produced by object vibration, and the space of Acoustic Wave Propagation is just called sound field.Be a kind of compressional wave when propagating in gas and liquid medium, may be mixed with shear wave when propagating in solid dielectric, the sound wave frequency that people's ear can be heard is generally between 20 hertz to 20000 hertz.
The measuring method of traditional wave length of sound measures wavelength with the resonance phenomenon of tuning fork and air column, the glass tube of general use one about one meter length is erected in the container be filled with water, when the tuning fork just tapped through with is placed on above glass tube, them are made to empathize by regulating the length of air column in glass tube, the sound heard during sympathetic response is the loudest, now wave length of sound is 4 times of Length of air column, then converses the length of sound wave.
But the defect that the teaching equipment that existing wave length of sound is measured exists is: one, whole device does not have a globality, need in measuring process before tuning fork vibration disappears, accurate control Length of air column makes them empathize, and operating process is complicated and loaded down with trivial details, uses inconvenience; Two, during sympathetic response, sound is clear not loud, is not easy to identification; Three, tuning fork phonation time is shorter, is not easy to debugging, often needs constantly to knock it; Four, fork frequency is single, can not show the characteristic of the corresponding different wave length of different frequency; Five, because fork frequency is lower, wavelength is longer, and the glass tube used is longer, is not easy to transport, easily damages, and the time has been grown also to need to supplement and added water or change water.Owing to lacking the measurement mechanism of more satisfactory wave length of sound, student is difficult to complete alone whole measuring process, and study is got up very difficult.How in the process of teaching, the measuring process allowing student complete sound wave is simply and easily urgent problem.
Utility model content
The utility model, in order to overcome the defect of prior art, discloses a kind of measurement mechanism of wave length of sound.
An object of the present utility model is, designs a kind of structure simple, easy to operate, is changed the length of air column, find out the resonant frequency of different sound wave, conveniently calculate the measurement mechanism of wave length of sound by pipe inner carrier.
In order to realize according to these objects of the present utility model and other advantage, provide a kind of measurement mechanism of wave length of sound, comprise the body of both ends open, in described body, piston and loudspeaker are installed, piston and loudspeaker are oppositely arranged, cylinder lever connecting rod one end on the side of piston, the other end stretches out body, and the length direction of body is also provided with scale;
Also comprise:
Power amplifier, it is for the ultra-weak electronic signal in Received signal strength source, and amplification signal is sounded to drive loudspeaker;
Frequency control switch, it is for sending the command signal of certain frequency;
Single-chip microcomputer, its frequency command signal sent for receiving described frequency control switch, by analysis process after by the electric signal transmission of respective frequencies to power amplifier;
Oscillatory circuit, it is frequency required when single-chip microcomputer provides work;
Power supply, it provides electric energy for above-mentioned each assembly.
Preferably, described frequency control switch is the button of control 1kHz, 2kHz and 3kHz.
Preferably, described oscillatory circuit is made up of crystal oscillator two electric capacity of connecting, two electric capacity indirectly.
Preferably, described power supply is connected by reset circuit with between single-chip microcomputer, and described reset circuit is by electric capacity contact resistance, and electric capacity two ends arrange switch, and resistance eutral grounding is formed.
Preferably, described piston is made up of header board, O-ring seal and rear plate, and described header board arranges step, and O-ring seal is enclosed within step, and rear plate is bonded on step end face, and O-ring seal between front and rear panel, and slightly protrudes front and rear panel edge.
Preferably, described loudspeaker are screwed on horn bracket, and horn bracket is fixed in body; Handle is installed on described pull bar top of stretching out body, and the opening part of pull bar and body installs closure plate, and pull bar is through in the middle part of closure plate.
Preferably, left and right support is fixed at described body two ends, and two support installing are on base plate.
Preferably, reinforcement is fixed between described body and base plate.
Preferably, described body, pull bar, piston front and rear panel, horn bracket, closure plate, handle, left and right support, base plate and reinforcement are acrylic material and make.
The utility model at least comprises following beneficial effect: owing to being changed the length of air column by pipe inner carrier, find out the resonant frequency of different sound wave, therefore calculate wave length of sound according to the length of air column; Because loudspeaker are by Single-chip Controlling, therefore loudspeaker can send the sound of different frequency and phonation time is controlled in pipe; Because piston is by front and rear panel grip seal circle, O-ring seal protrudes front and rear panel edge, and therefore the impermeability of piston and inside pipe wall is good, can not leak sound in piston sliding process, avoids producing measuring error; Because body is provided with scale, therefore, it is possible to the conveniently length of air column in readout tube; Because whole device is wholely set, good integrity, therefore structure is simple, and easy to operate, student can complete alone whole measuring process, and study is got up very easy.
Part is embodied by explanation below by other advantage of the present utility model, target and feature, part also will by research and practice of the present utility model by those skilled in the art is understood.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic diagram of the measurement mechanism of wave length of sound in embodiment of the present utility model;
Fig. 2 is the circuit diagram of the measurement mechanism of wave length of sound in embodiment of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, can implements according to this with reference to instructions word to make those skilled in the art.
Should be appreciated that used hereinly such as " to have ", other element one or more do not allotted in " comprising " and " comprising " term or the existence of its combination or interpolation.
Fig. 1 and 2 shows according to a kind of way of realization of the present utility model, comprising: the body 1 of both ends open, in described body 1, piston 2 and loudspeaker 3 are installed, piston 2 and loudspeaker 3 are oppositely arranged, cylinder lever connecting rod 4 one end on the side of piston 2, the other end stretches out body 1, and the length direction along body 1 fixes rule 5, also comprises: power amplifier 6, frequency control switch 7, single-chip microcomputer 8, oscillatory circuit 9, described power amplifier 6 connects the P2.0 pin of loudspeaker 3 and single-chip microcomputer 8 respectively, power amplifier 6 is by 12V Power supply, loudspeaker 3, ground connection oscillatory circuit 9 connects XTAL1 and the XTAL2 pin of single-chip microcomputer 8 respectively, the RST pin of single-chip microcomputer 8 connects 5V power supply by reset circuit, and frequency control switch 7 comprises the button of control three rate-adaptive pacemaker, is respectively the K1 button of 1kHz, the K2 button of 2kHz, the K3 button of 3kHz, K1 button, K2 button, K3 button connects the P1.0 of single-chip microcomputer 8 respectively, P1.1, P1.2 pin, wherein K1 button, K2 button, the equal ground connection of K3 button, K1, K2, K3 control loudspeaker 3 can in pipe 1 sound sending different frequency.When sound horn and inner air tube are empathized, measure the length of now inner air tube post, the length of inner air tube post is the integral multiple of wave length of sound, converts and obtains wave length of sound.
Body 1 is for providing the air column of different length for measuring wave length of sound; Piston 2 is the mobile Length of air column changed at any time in body in body 1; Loudspeaker 3 send the sound of different frequency in pipe; Pull bar 4 is for the piston in movable pipe; The length of inner air tube principal post measured by rule 5; Power amplifier 6 is for the ultra-weak electronic signal in Received signal strength source, and amplification signal is sounded to drive loudspeaker; Frequency control switch 7 is for sending the command signal of different frequency; The frequency command signal that single-chip microcomputer 8 sends for receiving described frequency control switch, by analysis process after by the electric signal transmission of respective frequencies to power amplifier; Oscillatory circuit 9 is frequency required when single-chip microcomputer provides work.
In this technical scheme, press one of them frequency control switch and make sound horn, by the length of air column in pull bar adjustable pipe, when sound and inner air tube are empathized, observe the length that now inner air tube post measured by rule, the length of inner air tube post is the integral multiple of wave length of sound, converts and obtains wave length of sound.
In another kind of example, left and right support 10,11 is fixed at described body 1 two ends, two support installing are on base plate 12, fix reinforcement 13 between body 1 and base plate 12, reinforcement 13 lower edges is connected to body 1 with on base plate 12, and described loudspeaker 3 are screwed on horn bracket 14, horn bracket 14 is fixed in body 1, handle 15 is installed on described pull bar 4 top of stretching out body, and pull bar 4 installs closure plate 16 with the opening part of body 1, and pull bar 4 is through in the middle part of closure plate 16.The reinforcement of this scheme is adopted to make body and support fixation; Horn bracket makes loudspeaker avoid offseting in body, and loudspeaker edge contacts with inner surface of tube body, avoids the phenomenon that gas leakage leakage sound occurs; Handle and closure plate make pull bar in twitch process along body main axle moving, and the favourable part of skew can not occur.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
A kind of implementation of the piston in such scheme is: described piston 2 is made up of header board 21, O-ring seal 22 and rear plate 23, described header board 21 arranges step, O-ring seal 22 is enclosed within step, rear plate 23 is bonded on step end face, O-ring seal 22 between front and rear panel 21,23, and slightly protrudes front and rear panel 21,23 edge.Adopt this scheme to have the impermeability of piston and inside pipe wall good, can not sound be leaked in piston sliding process, avoid the favourable part producing measuring error.
A kind of implementation of the oscillatory circuit in such scheme is: described oscillatory circuit is made up of crystal oscillator CRYSTAL two electric capacity of connecting, two electric capacity indirectly, two electric capacity are respectively C1, C2, and its capacitance is 30pf.Adopt this scheme to have and can provide the favourable part of frequency needed for work for single-chip microcomputer (AT89C52).
A kind of implementation of the reset circuit in such scheme is: described reset circuit is by electric capacity contact resistance, and electric capacity two ends arrange K switch 4, and resistance eutral grounding is formed, and described electric capacity is C3, and its capacitance is 10pf, and described resistance is R1, and its resistance value is 10k Ω.The favourable part adopting this scheme to have circuit can be resetted at any time.
As mentioned above, according to the utility model, owing to being changed the length of air column by pipe inner carrier, find out the resonant frequency of different sound wave, therefore calculate wave length of sound according to the length of air column; Because loudspeaker are by Single-chip Controlling, therefore loudspeaker can send the sound of different frequency and phonation time is controlled in pipe; Because piston is by front and rear panel grip seal circle, O-ring seal protrudes front and rear panel edge, and therefore the impermeability of piston and inside pipe wall is good, can not leak sound in piston sliding process, avoids producing measuring error; Because body is provided with scale, therefore, it is possible to the conveniently length of air column in readout tube; Because whole device is wholely set, good integrity, therefore structure is simple, and easy to operate, student can complete alone whole measuring process, and study is got up very easy.
Although embodiment of the present utility model is open as above, it is not restricted to listed in instructions and embodiment utilization.It can be applied to various applicable field of the present utility model completely.For those skilled in the art, can easily realize other amendment.Therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend described.
Claims (9)
1. a measurement mechanism for wave length of sound, is characterized in that, comprises the body of both ends open, install piston and loudspeaker in described body, piston and loudspeaker are oppositely arranged, and on the side of piston cylinder lever connecting rod one end, the other end stretches out body, and the length direction of body is also provided with scale;
Also comprise:
Power amplifier, it is for the ultra-weak electronic signal in Received signal strength source, and amplification signal is sounded to drive loudspeaker;
Frequency control switch, it is for sending the command signal of certain frequency;
Single-chip microcomputer, its frequency command signal sent for receiving described frequency control switch, by analysis process after by the electric signal transmission of respective frequencies to power amplifier;
Oscillatory circuit, it is frequency required when single-chip microcomputer provides work;
Power supply, it provides electric energy for above-mentioned each assembly.
2. the measurement mechanism of wave length of sound as claimed in claim 1, it is characterized in that, described frequency control switch is the button of control 1kHz, 2kHz and 3kHz.
3. the measurement mechanism of wave length of sound as claimed in claim 1, is characterized in that, described oscillatory circuit is made up of crystal oscillator two electric capacity of connecting, two electric capacity indirectly.
4. the measurement mechanism of wave length of sound as claimed in claim 1, it is characterized in that, described power supply is connected by reset circuit with between single-chip microcomputer, and described reset circuit is by electric capacity contact resistance, and electric capacity two ends arrange switch, and resistance eutral grounding is formed.
5. the measurement mechanism of wave length of sound as claimed in claim 1, it is characterized in that, described piston is made up of header board, O-ring seal and rear plate, described header board arranges step, O-ring seal is enclosed within step, rear plate is bonded on step end face, and O-ring seal between front and rear panel, and slightly protrudes front and rear panel edge.
6. the measurement mechanism of wave length of sound as claimed in claim 1, it is characterized in that, described loudspeaker are screwed on horn bracket, and horn bracket is fixed in body; Handle is installed on described pull bar top of stretching out body, and the opening part of pull bar and body installs closure plate, and pull bar is through in the middle part of closure plate.
7. the measurement mechanism of wave length of sound as claimed in claim 1, it is characterized in that, left and right support is fixed at described body two ends, and two support installing are on base plate.
8. the measurement mechanism of wave length of sound as claimed in claim 7, is characterized in that, fix reinforcement between described body and base plate.
9. the measurement mechanism of the wave length of sound as described in any one of claim 1,5,6,7,8, is characterized in that, described body, pull bar, piston front and rear panel, horn bracket, closure plate, handle, left and right support, base plate and reinforcement are acrylic material and make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520902821.4U CN205091049U (en) | 2015-11-14 | 2015-11-14 | Measurement device for sound wave wavelength |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520902821.4U CN205091049U (en) | 2015-11-14 | 2015-11-14 | Measurement device for sound wave wavelength |
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| Publication Number | Publication Date |
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| CN205091049U true CN205091049U (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520902821.4U Expired - Fee Related CN205091049U (en) | 2015-11-14 | 2015-11-14 | Measurement device for sound wave wavelength |
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| CN (1) | CN205091049U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2732799C1 (en) * | 2020-03-04 | 2020-09-22 | Олег Александрович Поваляев | Universal platform and research module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2732799C1 (en) * | 2020-03-04 | 2020-09-22 | Олег Александрович Поваляев | Universal platform and research module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160316 Termination date: 20181114 |
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| CF01 | Termination of patent right due to non-payment of annual fee |