CN202422520U - Sound velocity measurement experimental instrument - Google Patents
Sound velocity measurement experimental instrument Download PDFInfo
- Publication number
- CN202422520U CN202422520U CN2012200386183U CN201220038618U CN202422520U CN 202422520 U CN202422520 U CN 202422520U CN 2012200386183 U CN2012200386183 U CN 2012200386183U CN 201220038618 U CN201220038618 U CN 201220038618U CN 202422520 U CN202422520 U CN 202422520U
- Authority
- CN
- China
- Prior art keywords
- microphone
- tuning fork
- support
- sound velocity
- instrument
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a sound velocity measurement experimental instrument. Based on a sound velocity experiment device using a conventional tuning fork and air pipe resonance method, the instrument adopts the structure that a microphone is arranged between a tuning fork and a resonating tube, wherein the microphone is connected with a microphone input insertion hole of a computer through a microphone wire; a sound card-based virtual instrument software is mounted in the computer; the microphone is utilized to acquire an acoustic signal of the resonating tube, the oscilloscope function of the virtual instrument is utilized to display the signal wave shape, and an experimenter can judge whether the resonance is achieved or not according to the wave shape amplitude, so that the defect of the conventional tuning fork and air pipe resonance method in which whether the resonance is achieved or not is judged only based on the auditory sensation of the experimenter is avoided, and the experimental precision is improved. Therefore, the sound velocity measurement experimental instrument can be used for sound velocity measurement experimental projects in general physical experiments.
Description
Technical field
The utility model relates to a kind of physics facility, especially refers to a kind of acoustic velocity measutement experiment instrument.
Background technology
The measurement of the velocity of sound is an important experimental project in the Experiment of College Physics, can be divided into velocity of ultrasonic sound by frequency of sound wave and measure and the audible acoustic velocity measutement, and tuning fork air hose sympathetic response method is generally used in the audible acoustic velocity measutement.Tuning fork air hose sympathetic response method only judges whether to reach sympathetic response with experimenter's the sense of hearing, and experimental precision is restricted.
Summary of the invention
The purpose of the utility model provides a kind of easy and simple to handle, experimental error is little, modernization level is higher acoustic velocity measutement experimental provision.
To achieve these goals; The utility model comprises the support (8) that is fixed on the support one (1); Resonance tube (4) is fixed on the support (8); Resonance tube (4) is connected with water butt (3) through flexible pipe (5), is fixed on the upper end that tuning fork (2) on the support one (1) places resonance tube (4), and there is a microphone (6) in the zone between resonance tube (4) and the tuning fork (2); Microphone (6) is installed in the right side of support two (10); The left end of support two (10) and support one (1) are fixing, and microphone (6) is connected through the microphone input jack of microphone cord (9) with computing machine (7), and computing machine (7) is equipped with based on the virtual instrument software V0.94 of sound card or other off-the-shelf softwares.
Because the utility model utilizes microphone to gather the acoustic signals of resonance tube; By virtual instrument shows signal waveform; The experimenter judges whether to reach sympathetic response according to wave-shape amplitude; The tuning fork air hose sympathetic response method in original technology improved only judges whether to reach the defective of sympathetic response with experimenter's the sense of hearing, visual in image, experimental precision is improved.The use of virtual instrument, the modernization level of experiment is improved, and has expanded student's the visual field, has also practiced thrift oscillographic use cost.
Description of drawings
Fig. 1 is the structure principle chart of the utility model.Support 1, tuning fork 2, resonance tube 4, flexible pipe 5, microphone 6, computing machine 7, support 8, microphone cord 9, support 2 10 are wherein arranged.
Embodiment
In the accompanying drawings, tuning fork 2, support 2 10, support 8 usefulness securing members are separately fixed on the support 1.Resonance tube 4 is fixed on the support 8 and through flexible pipe 5 and is connected with water butt 3; Tuning fork 2 places the upper end of resonance tube 4; Between resonance tube 4 and tuning fork 2, place a support 2 10; Microphone 6 is installed in resonance tube 4 on the support 2 10 and the zone between the tuning fork 2, and microphone 6 is connected with the microphone input jack of computing machine 7 through the microphone cord 9 of band screen layer.Virtual instrument software V0.94 or other off-the-shelf softwares based on sound card are installed in the computing machine 7.Microphone 6 is gathered the acoustic signals of resonance tube 4, and the virtual oscilloscope at the virtual instrument software interface in the computing machine 7 just can show the acoustic signals waveform that microphone 6 collects through debugging.
The use of the utility model is such: excite tuning fork 1 to send sound wave with rubber mallet; Move up and down water storage barrel 3 simultaneously; Water level in the resonance tube 4 is changed; The sound wave that tuning fork 1 sends propagates into the water surface through resonance tube 4, forms standing wave through reflection along propagation in the other direction and original ripple stack again.When air column height on the water surface meets
(
is wave length of sound in the formula); Form standing wave resonance; The sound that this moment, resonance tube 4 sent is maximum, and it is maximum that the signal waveform amplitude that the virtual oscilloscope in the virtual instrument software interface in the computing machine 7 shows also reaches.Therefore the position of the water surface is than only judging whether that with the sense of hearing sympathetic response is more accurate, also more directly perceived like this in the time of just can finding sound maximum through observation virtual oscilloscope signal waveform.And two adjacent signals when maximum the difference of water surface site be the half-wavelength of sound wave, frequency of sound wave (being the natural frequency of tuning fork) multiplies each other with wavelength and promptly obtains the velocity of sound.
Claims (1)
1. acoustic velocity measutement experiment instrument; Comprise the support (8) that is fixed on the support one (1); Resonance tube (4) is fixed on the support (8), and resonance tube (4) is connected with water butt (3) through flexible pipe (5), is fixed on the upper end that tuning fork (2) on the support one (1) places resonance tube (4); It is characterized in that there is a microphone (6) in the zone between resonance tube (4) and the tuning fork (2); Microphone (6) is installed in the right side of support two (10), and the left end of support two (10) and support one (1) are fixing, and microphone (6) is connected through the microphone input jack of microphone cord (9) with computing machine (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200386183U CN202422520U (en) | 2012-02-08 | 2012-02-08 | Sound velocity measurement experimental instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200386183U CN202422520U (en) | 2012-02-08 | 2012-02-08 | Sound velocity measurement experimental instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202422520U true CN202422520U (en) | 2012-09-05 |
Family
ID=46747258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200386183U Expired - Fee Related CN202422520U (en) | 2012-02-08 | 2012-02-08 | Sound velocity measurement experimental instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202422520U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104680896A (en) * | 2015-03-12 | 2015-06-03 | 邬博宇 | Measurement demonstrator of inherent frequency |
| CN105788411A (en) * | 2016-04-30 | 2016-07-20 | 陈显盈 | Resonant demonstration instrument |
| KR20160106915A (en) | 2015-03-03 | 2016-09-13 | 김성곤 | Education Smart Resonance experiment apparatus |
| CN106485991A (en) * | 2016-12-23 | 2017-03-08 | 天津城建大学 | Sound three elements demonstrator |
| CN111458010A (en) * | 2020-05-05 | 2020-07-28 | 湖南科技学院 | Electronic sound velocity measuring instrument |
-
2012
- 2012-02-08 CN CN2012200386183U patent/CN202422520U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160106915A (en) | 2015-03-03 | 2016-09-13 | 김성곤 | Education Smart Resonance experiment apparatus |
| KR101686936B1 (en) | 2015-03-03 | 2016-12-15 | 김성곤 | Education Smart Resonance experiment apparatus |
| CN104680896A (en) * | 2015-03-12 | 2015-06-03 | 邬博宇 | Measurement demonstrator of inherent frequency |
| CN105788411A (en) * | 2016-04-30 | 2016-07-20 | 陈显盈 | Resonant demonstration instrument |
| CN106485991A (en) * | 2016-12-23 | 2017-03-08 | 天津城建大学 | Sound three elements demonstrator |
| CN111458010A (en) * | 2020-05-05 | 2020-07-28 | 湖南科技学院 | Electronic sound velocity measuring instrument |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202422520U (en) | Sound velocity measurement experimental instrument | |
| RU2012110600A (en) | TACTICAL USER INTERFACE FOR ELECTRONIC DEVICE | |
| CA2879091C (en) | Structure monitoring | |
| EP2738640A3 (en) | Portable apparatus having a plurality of touch screens and method of outputting sound thereof | |
| JP2013542828A5 (en) | ||
| TW200530929A (en) | Touch sensitive device employing bending wave vibration sensing and excitation transducers | |
| Calvo et al. | Experimental verification of enhanced sound transmission from water to air at low frequencies | |
| CN103321633A (en) | Method and device for detecting working fluid level depth of oil well | |
| CN203100824U (en) | Level measurement device based on standing sound wave method and audio card | |
| CN105550433B (en) | A kind of capacitive micromachined ultrasonic sensor characteristics analysis method | |
| CN104155044A (en) | Measuring device and measuring method for cable force of cable-stayed bridge based on mobile terminal | |
| CN202305004U (en) | Device for detecting inherent frequency of workpiece | |
| CN203055262U (en) | Moving film bottom type air column resonance and sound velocity measurement teaching demonstration device | |
| CN102944611B (en) | Steel tube nondestructive testing system using magnetostriction torsion ultrasonic guided waves | |
| CN202033100U (en) | Multifunctional acoustic velocity measuring instrument | |
| CN105699490A (en) | Device and method for detecting large-scale reproducible concrete cavity of steel pipe | |
| CN102410871A (en) | Indoor measuring device for shearing wave velocity of soil body | |
| CN102840906A (en) | Device for detecting inherent frequency of workpiece | |
| CN202329796U (en) | Indoor measurement device of shear wave velocity of soil body | |
| CN104793056B (en) | A kind of method for measuring the average radiation impedance in non-anechoic tank, of underwater sound PZT (piezoelectric transducer) | |
| CN103868582B (en) | Based on the type vibration wire infrasonic sensor of optical fiber Bragg raster | |
| CN207675710U (en) | Across the hole probe wire synchronizer of pile foundation supersonic reflectoscope | |
| TW201219744A (en) | making use of non-invasive approach to place at least one sensor to the relevant position of the bridge foundation base to calculate the depth of bridge foundation base | |
| CN206479649U (en) | A kind of feeler inspection formula underground utilities visit shovel | |
| CN205844262U (en) | A kind of steel pipe large scale renewable concrete porosity detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20130208 |