CN108961956A - A kind of bernoulli principle experimental provision based on audio - Google Patents
A kind of bernoulli principle experimental provision based on audio Download PDFInfo
- Publication number
- CN108961956A CN108961956A CN201810858017.9A CN201810858017A CN108961956A CN 108961956 A CN108961956 A CN 108961956A CN 201810858017 A CN201810858017 A CN 201810858017A CN 108961956 A CN108961956 A CN 108961956A
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- audio
- tracheae
- cylindrical body
- sound equipment
- glass container
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
- G09B23/12—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of liquids or gases
Abstract
The invention discloses a kind of bernoulli principle experimental provision based on audio, it is characterised in that: including cylindrical body glass container, tuner, sound equipment, tone generator, tracheae and air pump；Wherein, tuner and sound equipment are placed respectively in two bottom surfaces of cylindrical body glass container, its side opens up the stomata that can be inserted into tracheae, at least partly tracheae is inserted into cylindrical body glass container by stomata, one end of tracheae is connect with air pump, it is electrically connected between tone generator and sound equipment, installation can issue the software of tone by sound equipment on tone generator.The main beneficial effect of the present invention is: audio and fluid cleverly being connected, and probe into the relationship of flow velocity and pressure on this basis.The deficiencies of overcoming big volume existing for large-scale verifying device, big energy-consuming, big measured data error, has many advantages, such as miniaturization, intuitive, easy to operate, management easy to repair, substantially improves experimental situation.
Description
Technical field:
The present invention relates to the middle and high equal universities and colleges' Physical Experiment fields of one kind, more specifically, are related specifically to a kind of based on sound
The bernoulli principle experimental provision of frequency.
Background technique:
Bernoulli principle is the fundamental starting point for calculating project data and fluid analysis.Bernoulli principle confirmatory experiment is
The important reality that the professions such as middle and high equal universities and colleges' Aerospace Engineering, hydraulic engineering, architectural engineering, civil engineering must be learned by
One of test.Currently there are many verifying bernoulli principle devices and experiments.Such as: liquid communication verifies device, by blowing
Power suspension (attraction) small ball device.Proof bernoulli principle that can be vivid, but shortcoming is methods of these verifyings
All lack the quantam of proof, and can only directly observe phenomenon and obtain qualitative results.For the experiment mould of quantitative verification bernoulli principle
Block, currently on the market there is also some quantitative test equipment, working principle mainly uses a basic experiment platform to generate air
Stream flows through converging diverging runner and a Pitot tube that can be moved axially along runner, the other end and the independent pressure pipe structure of Duo Gen
Gas pressure is measured at multitube type manometer, there is good effect, but this kind of equipment price is expensive, to measurement method and measurement
The requirement of instrument is high, while size is all bigger, is also not easy to class-teaching of teacher carrying.
Summary of the invention:
The present invention is directed to above-mentioned problems of the prior art, provides a kind of bernoulli principle experiment dress based on audio
It sets, adopts the following technical scheme that the bernoulli principle experimental provision based on audio, including cylindrical body glass container, tuner, sound
Sound, tone generator, tracheae and air pump；Wherein, tuner and sound equipment are placed respectively in two bottom surfaces of cylindrical body glass container,
Side opens up the stomata that can be inserted into tracheae, and at least partly tracheae is inserted into cylindrical body glass container by stomata, one end of tracheae
It connect with air pump, is electrically connected between tone generator and sound equipment, installation can issue tone by sound equipment on tone generator
Software.
It in certain embodiments, further include pedestal, pedestal includes pedestal and bracket, mounting bracket on pedestal, cylindrical body glass
Glass container is rack-mount in the form of traverse.
In certain embodiments, three stomatas are opened up in the side of cylindrical body glass container, interval is equal between three stomatas
Even arrangement.
In certain embodiments, tone generator is mobile phone or IPAD, is by the software that sound equipment issues tone
GarageBand。
In certain embodiments, there is the display screen of display tone on tuner.
In certain embodiments, it is equipped with different gears on air pump, different air pressures is exported by different stalls.
Compared with prior art, main beneficial effect of the invention is:
Audio and fluid are cleverly connected, and probe into the relationship of flow velocity and pressure on this basis.It overcomes
The deficiencies of volume existing for large size verifying device is big, big energy-consuming, big measured data error, have miniaturization, it is intuitive, easy to operate,
The advantages that management easy to repair, substantially improves experimental situation.
Detailed description of the invention:
The above and other feature of the present invention, property and advantage will pass through description with reference to the accompanying drawings and examples
And become apparent, identical appended drawing reference always shows identical feature in the accompanying drawings, in which:
Fig. 1 is disclosed in certain embodiments of the invention, a kind of installation knot of the bernoulli principle experimental provision based on audio
Structure schematic diagram.
Fig. 2 is disclosed in certain embodiments of the invention, cylindrical body in a kind of bernoulli principle experimental provision based on audio
The schematic diagram of glass container.
Specific embodiment:
With reference to Fig. 1 and Fig. 2, Fig. 1 is combined to disclose in certain embodiments of the invention, a kind of bernoulli principle based on audio
The mounting structure schematic diagram of experimental provision.Fig. 2 is disclosed in certain embodiments of the invention, a kind of bernoulli principle based on audio
The schematic diagram of cylindrical body glass container in experimental provision.The Bernoulli Jacob based on audio in some embodiments of Fig. 1 and Fig. 2 is former
Manage experimental provision, including cylindrical body glass container 1, tuner 2, sound equipment 3, tone generator 4, tracheae 5 and air pump 6；Wherein, exist
Tuner 4 and sound equipment 3 are placed in two bottom surfaces of cylindrical body glass container 1 respectively, and side opens up the stomata 7 that can be inserted into tracheae 5, until
Small part tracheae 5 is inserted into cylindrical body glass container 1 by stomata 7, and one end of tracheae 5 is connect with air pump 6, tone generator 4
It is electrically connected between sound equipment 3, installation can issue the software of tone by sound equipment on tone generator 4.
It further, further include pedestal, pedestal includes pedestal 81 and bracket 82,81 mounting brackets 82 on pedestal, the circle
Cylinder glass container 1 is mounted on bracket 82 in the form of traverse.
Further, three stomatas 7 are opened up in the side of cylindrical body glass container 1, interval is equal between three stomatas 7
Even arrangement.
Further, tone generator is mobile phone or IPAD, can be by the software that sound equipment issues tone
GarageBand。
Further, there is the display screen of display tone on tuner.
Further, it can be equipped with different gears on air pump 6, different air pressures is exported by different stalls.
As the preference of some embodiments, air pump 6 can be for inflator pump and equipped with fourth gear, respectively first grade, second
Shelves, third gear and fourth speed, and gear is higher, and the pressure of output is bigger.Opening air pump with different stalls can increase into tracheae
Pressure ventilation, can control the pressure size of tracheae surrounding air.
As the preference of some embodiments, tracheae 5 can be the transparent pipe of soft parent material composition, cylindrical body glass
Container can be cylindrical body glass tube.Tuner and small sound equipment are respectively adhered on two bottoms of cylindrical body glass tube with 3M adhesive tape
Sound equipment is linked digital music authoring software GarageBand by mobile phone or IPAD by face.
Working principle is as follows:
It can use mobile phone or IPAD APP software issue the sound of different frequency, different air velocities is generated, to visit
Study carefully the relationship of flow velocity and pressure.
GarageBand is the free digital music instruments App on iOS and macOS, can be easy to issue do re mi fa so
The standard pronunciation of la si, is calculated as 1234567 respectively.Difference between each sound is that their frequency is different, these sounds
Tune can be measured by tuner, and be shown in the small screen of tuner, and corresponding relationship is respectively 1-C, 2-D, 3-E, 4-F, 5-
G,6-A,7-B.If pressing 1 sound on software, C can be shown on the screen of tuner, if atmospheric density is constant, this
Corresponding relationship does not have biasing.This is because when the sound of same tone passes through in the air of standard atmospheric pressure, the frequency of sound
Rate variation is simultaneously little.But if the air-flow around sound becomes low-pressure air or pressure-air, then the frequency of sound will change.
When air pump is opened and is pressurized, the atmospheric pressure around transparent pipe can become larger this experimental provision, so the standard issued from sound equipment
Sound can be changed, i.e., standard pronunciation biases, and air pump gear number is higher, and pressure change is more obvious, then the biasing journey of standard pronunciation
It spends bigger.On the other hand, the standard pronunciation tone issued when sound equipment is higher, so that GarageBand is issued the sound of do, then issues
Sound of so can see the reduction of the pressure indicator numerical value on inflator pump, and when tone is turned down, the pressure on inflator pump indicates
Table numerical value increases.Experiment shows that the pressure of air is related with its flow velocity, and flow velocity is bigger, and pressure is smaller；Vice versa.To
Verify bernoulli principle.
The physical relationship of tone and sound source vibration frequency: tone is higher, and frequency is bigger, and tone is smaller, and frequency is smaller.
Sound frequency height and air velocity physical relationship: sound frequency is higher, air vibration often, air velocity
Accelerate.
The physical relationship of air velocity and air pressure: gas ignores gravity, the physical relationship satisfaction primary of flow velocity degree and air pressure
Making great efforts equation p+ (1/2) * ρ v^2=Const, (p is the pressure of certain point in fluid in formula, and v is the flow velocity of the fluid point, and ρ is fluid
Density), therefore speed is bigger, air pressure is lower, and speed is smaller, and air pressure is bigger.
Air pump is ventilated to glass tube and is pressurized, and has 4 degree of stopping, gear number is bigger, and output pressure is bigger.
Embodiment one:
A. so that sound equipment is successively issued 1234567 respectively in the state of closing air pump, then record what tuner was shown
Letter simultaneously records bias levels.
B. air pump opening is placed in a file location, sound equipment is made successively to issue 1234567 respectively, then record tuner word
Mother simultaneously records bias levels.
C. air pump is placed in second, third and fourth gear position, repeats step a~b.
Specific experiment data record such as table 1.
1 experimental provision measured data of table record
It is obtained from experimental data, if air pump opened, tuner can not accurately measure the standard of sound equipment sending
Sound, it is always less than normal than standard pronunciation, illustrate that air velocity reduces.And the gear number of air pump is higher, and bias levels are more obvious.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (6)
1. a kind of bernoulli principle experimental provision based on audio, it is characterised in that: including cylindrical body glass container, tuner,
Sound equipment, tone generator, tracheae and air pump；Wherein,
Tuner and sound equipment are placed respectively in two bottom surfaces of cylindrical body glass container, side opens up the stomata that can be inserted into tracheae,
At least partly tracheae is inserted into cylindrical body glass container by stomata, and one end of tracheae is connect with air pump, tone generator and sound
It is electrically connected between sound, installation can issue the software of tone by sound equipment on tone generator.
2. the bernoulli principle experimental provision based on audio as described in claim 1, it is characterised in that: further include pedestal, base
Seat includes pedestal and bracket, mounting bracket on pedestal, and the cylindrical body glass container is rack-mount in the form of traverse.
3. the bernoulli principle experimental provision based on audio as claimed in claim 2, it is characterised in that: in the cylindrical body glass
The side of glass container opens up three stomatas, is spaced and is evenly arranged between three stomatas.
4. the bernoulli principle experimental provision based on audio as described in claim 1, it is characterised in that: the tone generator
For mobile phone or IPAD, the software for issuing tone by sound equipment is GarageBand.
5. the bernoulli principle experimental provision based on audio as described in claim 1, it is characterised in that: have on the tuner
Show the display screen of tone.
6. such as the bernoulli principle experimental provision as claimed in any one of claims 1 to 5 based on audio, it is characterised in that: described
Air pump is equipped with different gears, and different air pressures is exported by different stalls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810858017.9A CN108961956A (en) | 2018-07-31 | 2018-07-31 | A kind of bernoulli principle experimental provision based on audio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810858017.9A CN108961956A (en) | 2018-07-31 | 2018-07-31 | A kind of bernoulli principle experimental provision based on audio |
Publications (1)
| Publication Number | Publication Date |
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| CN108961956A true CN108961956A (en) | 2018-12-07 |
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| CN201810858017.9A Pending CN108961956A (en) | 2018-07-31 | 2018-07-31 | A kind of bernoulli principle experimental provision based on audio |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201207234Y (en) * | 2007-11-09 | 2009-03-11 | 季倬 | Bernoulli formula phenomenon demonstration instrument |
| CN101567139A (en) * | 2009-06-08 | 2009-10-28 | 北京建筑工程学院 | Resonant thermoacoustic refrigeration demonstrating instrument |
| CN201904005U (en) * | 2010-11-29 | 2011-07-20 | 贺方玉 | Bernoulli's law demonstrator |
| RU2473388C1 (en) * | 2011-07-25 | 2013-01-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ярославский государственный технический университет" | Lab module |
| CN203490875U (en) * | 2013-09-16 | 2014-03-19 | 山东省远大网络多媒体股份有限公司 | A fluid pressure intensity tester |
-
2018
- 2018-07-31 CN CN201810858017.9A patent/CN108961956A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201207234Y (en) * | 2007-11-09 | 2009-03-11 | 季倬 | Bernoulli formula phenomenon demonstration instrument |
| CN101567139A (en) * | 2009-06-08 | 2009-10-28 | 北京建筑工程学院 | Resonant thermoacoustic refrigeration demonstrating instrument |
| CN201904005U (en) * | 2010-11-29 | 2011-07-20 | 贺方玉 | Bernoulli's law demonstrator |
| RU2473388C1 (en) * | 2011-07-25 | 2013-01-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ярославский государственный технический университет" | Lab module |
| CN203490875U (en) * | 2013-09-16 | 2014-03-19 | 山东省远大网络多媒体股份有限公司 | A fluid pressure intensity tester |
Non-Patent Citations (1)
| Title |
|---|
| 齐长存，陆文华: "一种基于音频的伯努利原理实验验证装置", 《HTTP://WWW.FX361.COM/PAGE/2018/0301/4911829.SHTML》 * |
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Application publication date: 20181207 |
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