CN107238660A - A kind of device for being used to test curved glass sound insulation value - Google Patents
A kind of device for being used to test curved glass sound insulation value Download PDFInfo
- Publication number
- CN107238660A CN107238660A CN201710381924.4A CN201710381924A CN107238660A CN 107238660 A CN107238660 A CN 107238660A CN 201710381924 A CN201710381924 A CN 201710381924A CN 107238660 A CN107238660 A CN 107238660A
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- China
- Prior art keywords
- sound
- test
- curved glass
- insulation value
- sound insulation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/11—Analysing solids by measuring attenuation of acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0232—Glass, ceramics, concrete or stone
Abstract
It is specifically a kind of to be used to test the device of curved glass sound insulation value the present invention relates to the test of the technical field, the particularly sound insulation value of glass of glass properties test.The device for being used to test curved glass sound insulation value includes signal generator, loudspeaker and sound level meter, also include hemispheric poly- sound cover and soft fluid sealant, loudspeaker is fixed on the tip position on the inner surface of poly- sound cover, poly- sound cover is fixed on a side surface of curved glass to be tested and uses soft sealant sealing, and sound level meter is installed on the opposite side of curved glass to be tested and on the extended line of loudspeaker and the line of the centre of sphere of poly- sound cover.The present invention can test out sound transmission loss exactly, the not limitation of tested person scene, also the not specification limitation of glass by bending, the curved glass being installed on body of a motor car even can be tested, meet multi items, the demand of the portable test of the curved glass with radian, simplify the step of sound insulation value is tested, improve the efficiency of sound insulation value test.
Description
Technical field：
The test of the technical field, the particularly sound insulation value of glass tested the present invention relates to glass properties, specifically
A kind of device for being used to test curved glass sound insulation value.
Background technology：
At present, the sound insulation value test of glass is mainly carried out in sound insulation laboratory, and sound insulation laboratory is by two individuals
Reverberation chamber of the product not less than 50 cubic metres and a sound proof housing composition, test device mainly include noise generator, wave filter, work(
Rate amplifier, microphone, loudspeaker, sound intensity probe, dual-channel analysis instrument, computer and acoustic pressure, sound intensity calibrator etc.；Test
When marquis, random sampling selects three flat samples and cuts into given size, or makes the regulation that same material, same process make
The flat board plaques of size, detect test specimen weight, area and thickness in advance before installing；Test specimen is mounted in hole with positioning adhesive tape again
It is intraoral, it is then tight-closed and scrape off unnecessary glue with spring glass glue, tested after solidification；By measuring in sound source room
Average sound pressure level and reverberation time in average sound pressure level, receiving chamber, the sound transmission loss for obtaining vehicle glass is finally calculated with formula.
This professional sound insulation laboratory construction cost is high, and test scene is also single to be limited to, for the bending glass with certain radian
Windshield, side window glass and the skylight glass of glass, such as automobile, can not just frame up sealing, test its sound insulation value and exist
Certain difficulty, certainly if having been mounted to the curved glass on automobile just can not more test in sound insulation laboratory；
Therefore, in sound insulation laboratory, the flat samples of single fixed specification or the flat board plaques of making can only be tested, it is impossible to full
Sufficient multi items, the demand of the portable test of the curved glass with radian.
In the prior art, Chinese patent CN200410077526.6 discloses a kind of material soundproofing properties measuring device, its
Including signal generator, sound proof box and sound level device, signal generator is connected with the loudspeaker being fixed in sound proof box, sound proof box
Side is provided with the sound insulationg board that test material is processed, and sound level device is corresponding with sound insulationg board to be set, and the side of sound proof box is provided with
Slot, sound insulationg board is connected by slot with sound proof box；Also Chinese patent CN201220141954.0 discloses a kind of glass
Sound insulation contrasting detection device, it include a casing, a plurality of sound insulation boards, a plurality of loudspeakers, a plurality of decibels of testers and
One volume controller, casing is made up of sound panel, and audio amplifier upper surface is provided with a plurality of glass installation grooves, and sound insulation board is arranged on case
In vivo and casing is separated into a plurality of chambers, each chamber and is provided with loudspeaker, decibel tester is arranged at each chamber
Top；It is restricted that these are used to testing the specification of the device of sound insulation value to test object, can only test single fixed specification,
Flat samples without radian, can not equally meet multi items, the demand of the portable test of the curved glass with radian.
The content of the invention：
The technical problems to be solved by the invention are can not to meet multi items, the bending with radian for above-mentioned prior art
The shortcomings of demand of the portable test of glass, there is provided a kind of device for being used to test curved glass sound insulation value.
The technical scheme adopted by the invention to solve the technical problem is that：It is a kind of to be used to test curved glass sound insulation value
Device, including signal generator, loudspeaker and sound level meter, signal generator are connected with loudspeaker and can export voice signal extremely
Loudspeaker, it is characterised in that：Also include hemispheric poly- sound cover and soft fluid sealant, loudspeaker is fixed on the inner surface of poly- sound cover
On tip position, poly- sound cover is fixed on a side surface of curved glass to be tested and uses soft sealant sealing, sound level
Meter is installed on the opposite side of curved glass to be tested and on the extended line of loudspeaker and the line of the centre of sphere of poly- sound cover.
Further, the sound pressure level that the power output of loudspeaker can measure sound level meter is more than 10 decibels of background sound pressure level
More than.
Further, poly- sound cover is made of fine and close firm material, and the material is metal or rigid plastics.
Further, the surface density of poly- sound cover is more than 15 Kilograms Per Square Meters.
Further, the ripple that radius R ＞ λ/4, λ of poly- sound cover are propagated in atmosphere for the test sound wave that loudspeaker is sent
It is long.
Further, the test frequency of the test sound wave of loudspeaker output is 200~10000Hz.
Further, the voice signal of signal generator output is sine wave, square wave, sawtooth waveforms or white noise.
Further, sound level meter meets IEC61672-2002 CLASS2 class requirements.
Further, sound level meter selects the sound level meter analyzed with third-octave.
Further, the mounting distance D between sound level meter and curved glass to be tested is less than 10mm.
The present invention is due to taking above-mentioned technical proposal, and it has the advantages that：
The device for testing curved glass sound insulation value that the present invention is used, sound transmission loss can be tested out exactly, no
The limitation of tested person scene, also not by bending glass specification limitation, or even can test be installed to it is curved on body of a motor car
Bent glass, meets multi items, the demand of the portable test of the curved glass with radian, simplifies the step of sound insulation value test
Suddenly, the efficiency of sound insulation value test is improved.
Brief description of the drawings：
Fig. 1 is the overall structure diagram of the present invention for being used to test the device of vehicle glass sound insulation value.
Embodiment：
Present disclosure is described further below in conjunction with accompanying drawing.
As shown in figure 1, the device of the present invention for being used to test curved glass sound insulation value, including signal generator 1,
Loudspeaker 2, hemispheric poly- sound cover 3, soft fluid sealant 4, fixed support 5 and the sound level meter 6 with spectrum analysis function, it is to be tested
Curved glass 100 by fixed placement on fixed support 5, signal generator 1 and loudspeaker 2 by wire or bluetooth connection simultaneously
Voice signal can be exported to loudspeaker 2, loudspeaker 2 is fixed on the tip position on the inner surface of poly- sound cover 3, when to be tested
When curved glass is thicker, the power output of loudspeaker accordingly increases so that the sound pressure level that sound level meter 6 is measured is more than background sound pressure level
More than 10 decibels, poly- sound cover 3 is fixed on a side surface of curved glass 100 to be tested and sealed with soft fluid sealant 4, sound
Level meter 6 is installed on the opposite sides of curved glass 100 to be tested and prolonging positioned at loudspeaker 2 and the line of the centre of sphere of poly- sound cover 3
On long line；So due to using hemispheric poly- sound cover 3, the combination of poly- sound cover 3 and curved glass 100 is preferable, gap is less, together
Shi Caiyong soft fluid sealant 4 can preferably avoid the leakage of voice signal, treated by signal generator 1 and loudspeaker 2
The side of the curved glass 100 of test sends test voice signal, and stable sound field, sound are formed in hemispheric poly- sound cover 3
Level meter 6 measures the acoustic pressure size through the voice signal of curved glass 100 in the opposite side of curved glass 100 to be tested, from
And the sound transmission loss of curved glass 100 is calculated, the limitation of the test device not tested person scene can both have been tested indoors,
Can be in outdoor test, and the interference brought in order to avoid sound reflection, test scene, which is tried one's best, chooses spacious, broad ring
Border；The also not specification limitation of glass 100 by bending, can also both be tested finished glass, might be used also with test sample glass simultaneously
To test the curved glass 100 being installed on body of a motor car, the demand of the portable test of multi items is met.In order to ensure poly- sound
The stabilization of the sound field formed in cover 3, and voice signal is reduced through poly- sound cover body overseas publicity, preferably poly- sound cover 3 is using fine and close
Firm material is made, the metal such as iron or rigid plastics；And with certain thickness, the more big then soundproof effect of thickness is unreasonable
Think, the surface density (mass/area) of preferably poly- sound cover 3 should be greater than 15 Kilograms Per Square Meters, i.e., averagely sound transmission loss 39 decibels with
On.
Wherein, radius R ＞ λ/4, λ of hemispheric poly- sound cover 3 are that the test sound wave that loudspeaker 2 is sent is propagated in atmosphere
Wavelength；When testing curved glass 100, preferably the test frequency of test sound wave is 200~10000Hz, and sound wave is in atmosphere
Spread speed be 340m/s, the wavelength that 200Hz sound wave is propagated in atmosphere is 340/200=1.7m, then radius R should be greater than
1.7/4=0.425m.
Wherein, the voice signal that signal generator 2 is exported can be sine wave, square wave, sawtooth waveforms or white noise, in reality
During test, white noise is preferably used.
Wherein, sound level meter 6 is from high-precision, it is desirable to meets IEC61672-2002 CLASS2 class requirements, preferably may be used
It is specific from the sound level meter analyzed with third-octave to meet IEC61672-2002 CLASS1 class requirements.As for sound level
Mounting distance D between meter 6 and curved glass 100 to be tested, then require the smaller the better within the specific limits, preferably D is less than
10mm。
In Fig. 1, although be illustrated that strengthened glass, but it is understood that, it is of the present invention be used for test
The device of vehicle glass sound insulation value is equally applicable to include the interlayer glass of at least two sheet glass and at least a piece of polymer membrane
Glass, is also applied for the laminated glass with sound insulation diaphragm, or even double glazing.
Above content to a kind of device for being used to test curved glass sound insulation value of the present invention specifically retouch
State, but the present invention is not limited to by specific embodiments described above content, so all according to technical key point
Any improvement, equivalent modifications and replacement carried out etc., belongs to the scope of protection of the invention.
Claims (10)
1. a kind of device for being used to test curved glass sound insulation value, including signal generator, loudspeaker and sound level meter, signal hair
Raw device is connected with loudspeaker and can export voice signal to loudspeaker, it is characterised in that：Also include hemispheric poly- sound cover and
Soft fluid sealant, loudspeaker is fixed on the tip position on the inner surface of poly- sound cover, and poly- sound cover is fixed on bending glass to be tested
On one side surface of glass and use soft sealant sealing, sound level meter is installed on the opposite side of curved glass to be tested and positioned at raising
On the extended line of the line of the centre of sphere of sound device and poly- sound cover.
2. the device according to claim 1 for being used to test curved glass sound insulation value, it is characterised in that：Loudspeaker it is defeated
The sound pressure level that going out power can measure sound level meter is more than background sound pressure level more than 10 decibels.
3. the device according to claim 1 for being used to test curved glass sound insulation value, it is characterised in that：Poly- sound cover is used
Fine and close firm material is made, and the material is metal or rigid plastics.
4. the device according to claim 1 for being used to test curved glass sound insulation value, it is characterised in that：The face of poly- sound cover
Density is more than 15 Kilograms Per Square Meters.
5. the device according to claim 1 for being used to test curved glass sound insulation value, it is characterised in that：The half of poly- sound cover
Footpath R ＞ λ/4, λ are the wavelength that the test sound wave that loudspeaker is sent is propagated in atmosphere.
6. the device according to claim 1 for being used to test curved glass sound insulation value, it is characterised in that：Loudspeaker is exported
Test sound wave test frequency be 200~10000Hz.
7. the device according to claim 1 for being used to test curved glass sound insulation value, it is characterised in that：Signal generator
The voice signal of output is sine wave, square wave, sawtooth waveforms or white noise.
8. the device according to claim 1 for being used to test curved glass sound insulation value, it is characterised in that：Sound level meter meets
IEC61672-2002CLASS2 class requirements.
9. the device according to claim 1 for being used to test curved glass sound insulation value, it is characterised in that：Sound level meter is selected
The sound level meter analyzed with third-octave.
10. the device according to claim 1 for being used to test curved glass sound insulation value, it is characterised in that：Sound level meter with
Mounting distance D between curved glass to be tested is less than 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710381924.4A CN107238660A (en) | 2017-05-26 | 2017-05-26 | A kind of device for being used to test curved glass sound insulation value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710381924.4A CN107238660A (en) | 2017-05-26 | 2017-05-26 | A kind of device for being used to test curved glass sound insulation value |
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| CN107238660A true CN107238660A (en) | 2017-10-10 |
Family
ID=59984489
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| CN201710381924.4A Pending CN107238660A (en) | 2017-05-26 | 2017-05-26 | A kind of device for being used to test curved glass sound insulation value |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333257A (en) * | 2018-02-12 | 2018-07-27 | 安徽江淮汽车集团股份有限公司 | A kind of shield glass test device |
| CN108982673A (en) * | 2018-05-16 | 2018-12-11 | 浙江西溪玻璃有限公司 | A kind of applicability glass soundproof effect automatic detection device |
| CN109238746A (en) * | 2018-11-02 | 2019-01-18 | 上海海维斯特汽车设计有限公司 | A kind of soundproofed cabin and its test method suitable for automobile wind tunnel test |
| CN112051336A (en) * | 2020-08-17 | 2020-12-08 | 中国第一汽车股份有限公司 | Test system and test method for distinguishing type and thickness of automobile glass |
| CN113252338A (en) * | 2021-06-08 | 2021-08-13 | 浙江大学 | Detection device and estimation method for aerodynamic noise outside valve |
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| CN1632559A (en) * | 2004-12-22 | 2005-06-29 | 华南理工大学 | Material soundproofing properties measuring device |
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| CN1632559A (en) * | 2004-12-22 | 2005-06-29 | 华南理工大学 | Material soundproofing properties measuring device |
| CN2758767Y (en) * | 2004-12-22 | 2006-02-15 | 华南理工大学 | Measurer for sound insulation performance of material |
| CN102375031A (en) * | 2011-09-16 | 2012-03-14 | 刘铁军 | Device and method for testing sound absorbing performance of material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333257A (en) * | 2018-02-12 | 2018-07-27 | 安徽江淮汽车集团股份有限公司 | A kind of shield glass test device |
| CN108982673A (en) * | 2018-05-16 | 2018-12-11 | 浙江西溪玻璃有限公司 | A kind of applicability glass soundproof effect automatic detection device |
| CN109238746A (en) * | 2018-11-02 | 2019-01-18 | 上海海维斯特汽车设计有限公司 | A kind of soundproofed cabin and its test method suitable for automobile wind tunnel test |
| CN112051336A (en) * | 2020-08-17 | 2020-12-08 | 中国第一汽车股份有限公司 | Test system and test method for distinguishing type and thickness of automobile glass |
| CN113252338A (en) * | 2021-06-08 | 2021-08-13 | 浙江大学 | Detection device and estimation method for aerodynamic noise outside valve |
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Application publication date: 20171010 |
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