CN206945614U - Sound insulation property test system and sound receiver - Google Patents
Sound insulation property test system and sound receiver Download PDFInfo
- Publication number
- CN206945614U CN206945614U CN201720782274.XU CN201720782274U CN206945614U CN 206945614 U CN206945614 U CN 206945614U CN 201720782274 U CN201720782274 U CN 201720782274U CN 206945614 U CN206945614 U CN 206945614U
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- sound
- insulation property
- sound insulation
- receiving chamber
- test system
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Abstract
The utility model provides the sound insulation property test system and sound receiver of the sound insulation property for testing sound insulating material.Sound insulation property test system includes：Sounding room, the sounding room are connected with sound source, and the sounding room includes the first sound transducer to sense the first voice signal from the sound source；And receiving chamber, the receiving chamber are located at the top of the sounding room and are connected with the sounding room.The receiving chamber includes：Wedge absorber, the wedge absorber are located at inwall and the top of the receiving chamber, to absorb the sound of the inwall reflection of noise and the absorption chamber around the receiving chamber；With second sound sensor, for sensing from the receiving chamber, second sound signal via the sound insulating material.The test system determines the sound insulation property of the sound insulating material based on first voice signal and the second sound signal.
Description
Technical field
Sound insulation property test system is the utility model is related to, in particular to the sound insulation property for testing sound insulating material
The test system of energy.
Background technology
In various electromechanical equipments, control noise level has become important research direction.For example, in auto industry
In, major motor corporation of the world has all formulated internal car noise level strict control standard, and is reduced using various methods
Noise level.At present, the sound insulating material of acoustical material is generally employed as to reduce noise.And evaluate the weight of Material acoustic performance
It is exactly sound insulation property to want one of index.
At present, the test to sound insulation property usually requires to carry out in the sound insulation testing room put up.Sound insulation testing room
Test room includes reverberation chamber adjacent between two, is sound source room between one, and another is receiving chamber, is provided between two Room and lays test specimen
Hole, to install test specimen to be tested.Generally, each reverberation building volume cannot be less than 50m3.Fig. 1 show it is existing every
The schematic diagram of sound experiment test room.Wherein, reverberation chamber 1 is sound source room, and reverberation chamber 2 is receiving chamber, and test specimen 3 is arranged on reverberation chamber
In hole between 1 and reverberation chamber 2.
The special test environment of existing sound insulation experiment test room needs, the particularly requirement to test environment are very high.
Moreover, existing sound insulation experiment test room also needs to huge lab construction input, be not suitable for parts enterprises to the material that insulates against sound
The test and research of the sound insulation property of material.
Utility model content
The utility model provides a kind of system for the sound insulation property for testing sound insulating material, and its is simple in construction, easy to operate,
Manufacturing cost is relatively low.
According to one side of the present utility model, there is provided a kind of sound insulation property test system, for testing sound insulating material
Sound insulation property, it includes：Sounding room, the sounding room are connected with sound source, the sounding room include the first sound transducer with
Sense the first voice signal from the sound source；Receiving chamber, the receiving chamber be located at the top of the sounding room and with it is described
Sounding room connects.The receiving chamber includes：Wedge absorber, the wedge absorber are located at inwall and the top of the receiving chamber, with
Absorb the sound of the inwall reflection of the noise and the absorption chamber around the receiving chamber；And second sound sensor, it is used for
Sense second sound signal from the receiving chamber, via the sound insulating material.The test system is based on described first
Voice signal and the second sound signal determine the sound insulation property of the sound insulating material.
In one example, the sound insulation property test system also includes data processing equipment.The data processing equipment
It is connected with the sounding room and the receiving chamber, to receive first voice signal and the second sound signal, and is based on
The first voice signal and second sound signal that are received determines the sound insulation property of the sound insulating material.
In one example, the data processing equipment includes wave filter, and the wave filter senses with the second sound
Device connects, to filter out the signal of required frequency range from the second sound signal.
In one example, signal and first voice signal of the data processing equipment based on the required frequency range
To determine the sound insulation property of the sound insulating material.
In one example, the sound insulation property test system also includes sound insulation window, and the sound insulation window is positioned at described
Between sounding room and the receiving chamber, the sound insulating material is in the sound insulation window.
In one example, the sound insulation window includes damping material, and the damping material is positioned at the sound insulation window
Surrounding, to be sealed to the sound insulation window, the sound insulation window also includes steel plate, and the sound insulating material is located at the steel plate
On.
In one example, the receiving chamber is connected with motion, the receiving chamber by the motion and with
The sounding room separation or closure.
In one example, the wedge absorber is the wedge absorber of metal piercing, and the inside of the wedge absorber
With acoustical cotton.
In one example, the inwall of the sounding room has smooth fine and close galvanized steel plain sheet.
In one example, the inwall of the sounding room and the receiving chamber all has compound sound insulating structure.
In one example, the sound insulation property test system also includes damping block, and the damping block is located at the sounding
The bottom of room, and the damping block has rubber damping portion.
In one example, there is sealing strip, the sealing strip is inside and outside double between the sounding room and the receiving chamber
The sealing strip and compressible of layer, to reduce the lateral sound leakage of the test device.
According to other side of the present utility model, there is provided a kind of sound receiver, the sound receiver position
In the test system of the sound insulation property of test sound insulating material.The sound receiver is arranged on positioned at the test system
In sound dispensing device top.The sound receiver includes：Wedge absorber, the wedge absorber are located at the sound
The inwall of reception device and top, to absorb the inwall of noise and the sound receiver around the sound receiver
The sound of reflection；And sound transducer, for sensing sound from the sound dispensing device, via the sound insulating material
Sound.
In one example, the wedge absorber is the wedge absorber of metal piercing, and the inside of the wedge absorber
With acoustical cotton.
View of the above, it will be seen that the sound insulation property test system structure proposed in the utility model is simple, space
Size is smaller, and cost of manufacture is relatively low.Also, it is not necessary to the frock of special design and installation sound insulating material, can be greatly lowered material
The cost of acoustics R and D.Relative to the structure for using two reverberation chambers in the prior art, and the utility model is using mixed
The combining form of room and anechoic room is rung, using anechoic room as receiving chamber, without considering the sound absorbing capabilities of receiving chamber.The utility model
Sound insulation property test system be configured to move up and down and can rotate, be advantageous to sound insulating material in the window that insulates against sound
Installation.
Brief description of the drawings
Fig. 1 is the schematic diagram of existing sound insulation experiment test room.
Fig. 2 is the schematic diagram according to sound insulation property test system of the present utility model.
Embodiment
Below, it will be described in detail with reference to the accompanying drawings embodiment of the present utility model.
Referring now to Fig. 2, it illustrates the intention according to sound insulation property test system of the present utility model.As shown in Fig. 2
Sound insulation property test system 2 includes sounding room 20, the receiving chamber 30 above sounding room 20, positioned at sounding room 20 and receiving chamber
Sound insulation window 21 between 30, the motion 24 being connected with receiving chamber 30 and all it is connected with sounding room 20 and receiving chamber 30
Data processing equipment 26.
Sounding room 20 is connected with producing the sound source (not shown) of voice signal.Raised one's voice in sounding room 20 with one or more
Device 22, for amplifying voice signal caused by sound source, make it that amplified voice signal is sufficiently large relative to ambient noise,
So as to improve the accuracy of test.For example, loudspeaker 22 is four, the corner of the bottom of sounding room 20 is fixed on respectively.Hair
Also there is the first sound transducer 28 in sound chamber 20.First sound transducer 28 is for example fixed on the centre of sounding room 20,
And it is connected with data processing equipment 26.First sound transducer 28 senses first amplified caused by sound source, through loudspeaker 22
Voice signal, such as the first sound pressure level, and send first voice signal to data processing equipment 26.
Junction of the sound insulation window 21 between sounding room 20 and receiving chamber 30.Sound insulation window 21 size be, for example,
60mm*60mm.In the window 21 that insulates against sound, steel plate 23 is provided with, such as the size of steel plate 23 is 60mm*60mm*0.8mm.It is to be measured
The test specimen 31 of examination, such as sound insulating material 31 to be tested, it is placed on the top of steel plate 23.The size of sound insulating material 31 is, for example,
60mm*60mm, its thickness are, for example, 5mm-35mm.Generally, the thickness of sound insulating material is bigger, and its sound insulation property is better.Insulating against sound
The surrounding of window 21, sound insulation window 21 is sealed using damping material.For example, damping material is the thick pitch damping materials of 3mm.
Receiving chamber 30 is located at the top of sounding room 20, and is connected with motion 24.Motion 24 can be moved and revolved
Turn, so as to drive receiving chamber 30 to separate or close with sounding room 20.Motion 24 is provided with and opened for example with hydraulic control
Open and close conjunction and scram button.Before the installation of test specimen 31, to press and release the button, receiving chamber 30 moves up along AB axles, such as upwards
Mobile 30mm.Then, receiving chamber 30 turns clockwise 90 ° around AB axles.Now receiving chamber 30 is in released state with sounding room 20.
After test specimen 31 installs on sound insulation window 21, close push button is pressed, receiving chamber 30 is first around 90 ° of AB axles rotate counterclockwise, then
Receiving chamber 30 moves down, such as moves down 30mm.Now receiving chamber 30 is in closure state with sounding room 20.In order to ensure
Safety of the receiving chamber 30 in motion process, the speed of motion 24 of hydraulic control are slower.Moreover, motion 24 is also set
Scram button is equipped with, in case of emergency to stop the motion of receiving chamber 30 immediately.
Receiving chamber 30 has wedge absorber 32.Wedge absorber 32 is arranged on surrounding and the top of sounding room 30.Sound absorption point
It is, for example, the wedge absorber structure using metal piercing to split 32, the acoustical cotton of its internal high acoustic absorption performance filled with environmental protection.Inhale
Sound wedge 32 can absorb the noise around receiving chamber 30, for example, can absorb receiving chamber 30 inwall reflection sound and
Ambient noise outside receiving chamber 30.Thus, receiving chamber 30 is similar to anechoic room.Receiving chamber 30 also has second sound sensor
34.Second sound sensor 34 is connected with data processing equipment 26, and positioned at the centre of receiving chamber 30.Second sound sensor
34 sensings come Self-sounding room 20, second sound signal via sound insulating material 31, such as the second sound pressure level.
Data processing equipment 26 receives the first voice signal from the first sound transducer 28 and passed from second sound
The second sound signal of sensor 34.Data processing equipment 26 has wave filter (not shown).Wave filter for example passes with second sound
Sensor 34 is connected, and the signal of required frequency range is filtered out from the second sound signal from second sound sensor 34.At data
Device 26 is managed based on the first voice signal and filtered voice signal to determine the sound insulation property of sound insulating material 31.In a reality
In example, data processing equipment 26 can also calculate sound insulating material 31 according to the first voice signal and filtered voice signal
Oise insulation factor.
In an example, the wall of sounding room 30 and receiving chamber 30 uses compound sound insulating structure 25,35.It is for example, compound
Sound insulating structure 25,35 has the steel plate that two layers of thickness is 3mm, and internal layer is connected with metallic support, and porous suction is filled in internal layer
Sound fibrous material, to reach preferable defening effect.
In an example, in order to reduce the acoustic radiation of the wall of sounding room 20, the wall of sounding room 20 uses smooth cause
Close galvanized steel plain sheet.
In an example, the bottom of sounding room 20 is provided with rubber damping block 29.Rubber damping block 29 avoids sounding
The Hard link of room 20 and ground, reduces the interference of extraneous vibration and noise to test system.
In an example, sealed between sounding room 20 and receiving chamber 30 using the sealing strip 33 of inside and outside double-row pattern,
To reduce the lateral sound leakage of test system.For example, the elemental height of sealing strip 33 is 10mm, closed in receiving chamber 30 and sounding room 20
After conjunction, sealing strip 33 is compressed to 5mm.
The utility model additionally provides a kind of sound receiver, the sound receiver positioned at test sound insulating material every
In the test system of acoustic performance.The structure of the sound reception system is similar to receiving chamber 30 described above.The sound receives dress
Put the top for the sound dispensing device being arranged in the test system.The sound receiver includes wedge absorber,
It is located at the inwall of the sound receiver and top, to absorb noise and the sound around the sound receiver
The sound of the inwall reflection of reception device.The wedge absorber is, for example, the wedge absorber of metal piercing, and it is internal with suction
Sound cotton.The sound receiver also includes sound transducer, for sense from sound dispensing device, via the sound insulation material
The sound of material.
Sound insulation property test system of the present utility model is suitable to the test of the sound insulating material of parts.For example, it is particularly suitable for
In the sound insulation property test of the sound insulating material such as the front wall including automobile, carpet, wheel arc cover, spare tire cover plate on automobile.According to this reality
With new, the applicability of sound insulation measurement system is improved, shortens the construction cycle of acoustical material.Test system of the present utility model
Simple in construction, cost is low, workable.
It will be appreciated by those skilled in the art that each embodiment disclosed above can be without departing from the utility model in essence
In the case of make various changes and modifications.Therefore, the scope of protection of the utility model should by appended claims Lai
Limit.
Claims (14)
- A kind of 1. sound insulation property test system, for testing the sound insulation property of sound insulating material, it is characterised in that including：Sounding room, the sounding room are connected with sound source, and the sounding room comes from the sound including the first sound transducer to sense First voice signal in source；Receiving chamber, the receiving chamber are located at the top of the sounding room and are connected with the sounding room, and the receiving chamber includes：Wedge absorber, the wedge absorber is located at inwall and the top of the receiving chamber, to absorb making an uproar around the receiving chamber The sound of the inwall of sound and absorption chamber reflection；Second sound sensor, for sensing second sound signal from the receiving chamber, via the sound insulating material,Wherein, the test system determines the sound insulating material based on first voice signal and the second sound signal Sound insulation property.
- 2. sound insulation property test system as claimed in claim 1, in addition to data processing equipment, the data processing equipment with The sounding room connects with the receiving chamber, to receive first voice signal and the second sound signal, and is based on institute The first voice signal and second sound signal received determines the sound insulation property of the sound insulating material.
- 3. sound insulation property test system as claimed in claim 2, it is characterised in that the data processing equipment includes filtering Device, the wave filter are connected with the second sound sensor, to filter out the letter of required frequency range from the second sound signal Number.
- 4. sound insulation property test system as claimed in claim 3, it is characterised in that the data processing equipment is based on the institute The signal and first voice signal for needing frequency range determine the sound insulation property of the sound insulating material.
- 5. sound insulation property test system as claimed in claim 1, it is characterised in that also include sound insulation window, the sound proof window Mouth is between the sounding room and the receiving chamber, and the sound insulating material is in the sound insulation window.
- 6. sound insulation property test system as claimed in claim 5, it is characterised in that the sound insulation window includes damping material, The damping material is positioned at the surrounding of the sound insulation window, and to be sealed to the sound insulation window, the sound insulation window also wraps Steel plate is included, the sound insulating material is located on the steel plate.
- 7. sound insulation property test system as claimed in claim 1, it is characterised in that the receiving chamber is connected with motion, The receiving chamber is separated or closed with the sounding room by the motion.
- 8. sound insulation property test system as claimed in claim 1, it is characterised in that the wedge absorber is the suction of metal piercing Sound wedge, and the inside of the wedge absorber has acoustical cotton.
- 9. sound insulation property test system as claimed in claim 1, it is characterised in that the inwall of the sounding room has smooth cause Close galvanized steel plain sheet.
- 10. sound insulation property test system according to claim 1, it is characterised in that the sounding room and the receiving chamber Inwall all there is compound sound insulating structure.
- 11. sound insulation property test system according to claim 1, it is characterised in that also including damping block, the damping block Positioned at the bottom of the sounding room, and the damping block has rubber damping portion.
- 12. sound insulation property test system as claimed in claim 1, it is characterised in that the sounding room and the receiving chamber it Between there is sealing strip, the sealing strip is the inside and outside double-deck sealing strip and compressible, to reduce the lateral sound of the test device Leakage.
- 13. a kind of sound receiver, test system of the sound receiver positioned at the sound insulation property of test sound insulating material In, it is characterised in that the sound receiver is arranged on the top of the sound dispensing device in the test system, The sound receiver includes：Wedge absorber, the wedge absorber are located at inwall and the top of the sound receiver, are received with absorbing the sound The sound of the inwall reflection of noise and the sound receiver around device；Sound transducer, for sensing sound from the sound dispensing device, via the sound insulating material.
- 14. sound receiver as claimed in claim 13, it is characterised in that the wedge absorber is the sound absorption of metal piercing Wedge, and the inside of the wedge absorber has acoustical cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720782274.XU CN206945614U (en) | 2017-06-30 | 2017-06-30 | Sound insulation property test system and sound receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720782274.XU CN206945614U (en) | 2017-06-30 | 2017-06-30 | Sound insulation property test system and sound receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206945614U true CN206945614U (en) | 2018-01-30 |
Family
ID=61367674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720782274.XU Expired - Fee Related CN206945614U (en) | 2017-06-30 | 2017-06-30 | Sound insulation property test system and sound receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206945614U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560722A (en) * | 2017-08-28 | 2018-01-09 | 华东交通大学 | The high-precision noise measuring method and noise contribution analysis method of a kind of box-beam structure |
| CN107807172A (en) * | 2017-09-28 | 2018-03-16 | 哈尔滨工程大学 | The sound insulation measurement device and measuring method of random incidence underwater sound coating under pressurized conditions |
| 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 |
| CN108802201A (en) * | 2018-08-29 | 2018-11-13 | 华南理工大学 | The sound proof window tooling tested for automotive sheet part and interior material sound insulation property |
| CN109187759A (en) * | 2018-09-12 | 2019-01-11 | 华南理工大学 | A kind of sound insulation measurement system based on hand-held sound intensity probe external member |
| CN109307711A (en) * | 2018-11-28 | 2019-02-05 | 中车长春轨道客车股份有限公司 | Train run-through channel sound insulation property test method based on reverberation chamber and anechoic room |
| CN110865127A (en) * | 2019-11-28 | 2020-03-06 | 神龙汽车有限公司 | Sealing strip sound insulation measurement frock of variable compression |
| CN111157615A (en) * | 2019-12-31 | 2020-05-15 | 清华大学 | Sound wave cloud chamber |
| CN112067111A (en) * | 2020-08-21 | 2020-12-11 | 盐城工学院 | Car heating and ventilation monomer vibration noise testing device |
| CN112730626A (en) * | 2021-01-05 | 2021-04-30 | 中国科学院声学研究所 | On-site sound insulation measuring device and method based on vector sensor |
| CN113155972A (en) * | 2021-03-31 | 2021-07-23 | 中国飞机强度研究所 | Sound insulation performance test device |
| CN114659762A (en) * | 2021-12-21 | 2022-06-24 | 东风汽车集团股份有限公司 | Test equipment and test method for sound insulation performance of automobile parts |
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2017
- 2017-06-30 CN CN201720782274.XU patent/CN206945614U/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560722A (en) * | 2017-08-28 | 2018-01-09 | 华东交通大学 | The high-precision noise measuring method and noise contribution analysis method of a kind of box-beam structure |
| CN107807172B (en) * | 2017-09-28 | 2020-07-28 | 哈尔滨工程大学 | Sound insulation measuring device and method for random incidence underwater acoustic covering layer under pressurization condition |
| CN107807172A (en) * | 2017-09-28 | 2018-03-16 | 哈尔滨工程大学 | The sound insulation measurement device and measuring method of random incidence underwater sound coating under pressurized conditions |
| 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 |
| CN108802201A (en) * | 2018-08-29 | 2018-11-13 | 华南理工大学 | The sound proof window tooling tested for automotive sheet part and interior material sound insulation property |
| CN109187759A (en) * | 2018-09-12 | 2019-01-11 | 华南理工大学 | A kind of sound insulation measurement system based on hand-held sound intensity probe external member |
| CN109307711A (en) * | 2018-11-28 | 2019-02-05 | 中车长春轨道客车股份有限公司 | Train run-through channel sound insulation property test method based on reverberation chamber and anechoic room |
| CN109307711B (en) * | 2018-11-28 | 2022-01-25 | 中车长春轨道客车股份有限公司 | Train through passage sound insulation performance test method based on reverberation chamber and anechoic chamber |
| CN110865127A (en) * | 2019-11-28 | 2020-03-06 | 神龙汽车有限公司 | Sealing strip sound insulation measurement frock of variable compression |
| CN110865127B (en) * | 2019-11-28 | 2022-06-03 | 神龙汽车有限公司 | Sealing strip sound insulation measurement frock of variable compression |
| CN111157615A (en) * | 2019-12-31 | 2020-05-15 | 清华大学 | Sound wave cloud chamber |
| CN111157615B (en) * | 2019-12-31 | 2022-07-12 | 清华大学 | Sound wave cloud chamber |
| CN112067111A (en) * | 2020-08-21 | 2020-12-11 | 盐城工学院 | Car heating and ventilation monomer vibration noise testing device |
| CN112730626A (en) * | 2021-01-05 | 2021-04-30 | 中国科学院声学研究所 | On-site sound insulation measuring device and method based on vector sensor |
| CN112730626B (en) * | 2021-01-05 | 2021-11-09 | 中国科学院声学研究所 | On-site sound insulation measuring device and method based on vector sensor |
| CN113155972A (en) * | 2021-03-31 | 2021-07-23 | 中国飞机强度研究所 | Sound insulation performance test device |
| CN114659762A (en) * | 2021-12-21 | 2022-06-24 | 东风汽车集团股份有限公司 | Test equipment and test method for sound insulation performance of automobile parts |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |