CN108387644A - The anti-acoustic capability test device and test method of industrial noise protective earplug - Google Patents
The anti-acoustic capability test device and test method of industrial noise protective earplug Download PDFInfo
- Publication number
- CN108387644A CN108387644A CN201810184420.8A CN201810184420A CN108387644A CN 108387644 A CN108387644 A CN 108387644A CN 201810184420 A CN201810184420 A CN 201810184420A CN 108387644 A CN108387644 A CN 108387644A
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- Prior art keywords
- earplug
- blimp
- hole
- test device
- glass infuser
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Classifications
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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
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- 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
Abstract
The invention discloses a kind of anti-acoustic capability test device of industrial noise protective earplug and test methods, including：Blimp and the bionic ear being arranged in blimp are additionally provided with several sound source parts in blimp；Blimp includes vacuum cylinder and can seal the end cap for covering vacuum cylinder body both ends, and vacuum cylinder includes the alternate interior glass infuser being set-located and outer glass infuser；Bionic ear is made of acoustic material, and through-hole is offered on bionic ear, at least one noise monitor is equipped in through-hole, respectively one earplug mouth of setting, tested earplug can be filled in the earplug mouth at through-hole both ends.By using double-deck inside and outside glass infuser, blimp can be allowed to generate soundproof effect by vacuum gap condition, a good sound insulation environment is provided for test.End cap can carry out sound insulation processing by covering acoustic material, ensure that blimp integrally plays the role of sound insulation.
Description
Technical field
The present invention relates to a kind of a kind of tests of the anti-acoustic capability of noise reduction measuring technology more particularly to industrial noise protective earplug
Device and test method.
Background technology
The noise reduction test of earplug needs in preferable sound insulation condition just can guarantee the accuracy of test.In addition earplug with
Matching relationship between duct, such as stoppers how degree is also required to carry out in noise reduction is tested for the influential effect of sound insulation and noise reduction
Data acquire, and data reference is carried out when to manufacture earplug.The selection of the improvement and material that correspond to ear phone structure in this way provides very
Good data supporting.Therefore a kind of test equipment and test method of the performance of professional test earplug noise reduction are needed.
Invention content
The present invention overcomes the deficiencies in the prior art, provide a kind of anti-acoustic capability test device of industrial noise protective earplug
And test method.
In order to achieve the above objectives, a kind of technical solution that the present invention uses for：A kind of noise reduction of industrial noise protective earplug
Performance testing device, including：Blimp and the bionic ear being arranged in blimp are additionally provided with several in the blimp
Sound source part；
The blimp include vacuum cylinder and can sealing cover residence state the end cap at vacuum cylinder both ends, the vacuum
Cylinder includes the alternate interior glass infuser being set-located and outer glass infuser；
The bionic ear is made of acoustic material, and through-hole is offered on the bionic ear, at least one is equipped in the through-hole
A noise monitor, respectively one earplug mouth of setting, tested earplug can be filled in the earplug mouth at the through-hole both ends.
In a preferred embodiment of the present invention, heating wire is also set between the interior glass infuser and the outer glass infuser.
In a preferred embodiment of the present invention, the bionic ear is made by thermally expanding sponge.
In a preferred embodiment of the present invention, the outer glass infuser is equipped with aspirating hole, and the aspirating hole connection vacuumizes
Device.
In a preferred embodiment of the present invention, the interior glass infuser is that transparent glass material is made with outer glass infuser.
In a preferred embodiment of the present invention, the sound source part is the buzzer or/and loudspeaker being arranged in blimp.
In a preferred embodiment of the present invention, plug is equipped with pressure sensor in the earplug endoporus.
In a preferred embodiment of the present invention, the noise monitor is sound level meter.
The another technical solution that the present invention uses for：A kind of test method carried out using anti-acoustic capability test device,
Include the following steps：
(1) situation one：One of blimp end cap is opened, the bionic ear that plug has been set to two earplugs is suspended in sound insulation
In cover, covers end cap and vacuumize process is carried out to aspirating hole using air pump；Or,
Situation one：One of blimp end cap is opened, the bionic ear for setting earplug will not filled in and be suspended in blimp, is covered
Good end cap carries out vacuumize process using air pump to aspirating hole；
(2) it is directed to situation one and situation two is once operated：The bee of different location is controlled by control device of wireless
Ring device and sound horn pass through the sound size in the sound level meter detection through-hole in through-hole；
(3) in comparative situation one and situation two, the data of sound level meter detection, and find out in sounding decibel and sounding position one
Difference in the case of cause between the data of two kinds of situations.
In a preferred embodiment of the present invention, it is divided into two stages in the detection process of step (2), does not heat rank
Section and heating period；
Non- heating period, the heating wire in vacuum cylinder body do not do heating operation；
Heating period, the heating wire electrified regulation in vacuum cylinder body make bionic ear and the equal expanded by heating of earplug, pass through earplug
In pressure sensor readings control earplug and through-hole between extruding tightness.
The invention solves the defect existing in the background technology, and the present invention has following advantageous effect：
(1) by using double-deck inside and outside glass infuser, blimp can be allowed to generate sound insulation effect by vacuum gap condition
Fruit provides a good sound insulation environment for test.End cap can carry out sound insulation processing by covering acoustic material, ensure every
Sound cover integrally plays the role of sound insulation.
(2) vacuum degree can be controlled by the operation vacuumized, it is easy to operate to ensure corresponding sound insulation background condition.
(3) bionic ear is hung in blimp by hanging rope, ensures that interior glass infuser and end cap substantially will not be by connecing
Acoustic is touched, ensure that the soundproof effect of bionical ear portions.In addition suspension wire is by controlling length and suspension point, and then can ensure
The relative position of bionic ear and sound source part holder is adjustable.By choosing and can adjust by being suspended in the position of suspension wire on bionic ear
Earplug mouth towards angle on bionic ear.
(4) by making through-hole on bionic ear 1, then sound level meter is set in through-hole, just simulate in this way duct with
Relationship between ear-drum, the hearing for being more nearly people receive, sound insulation and noise reduction when more life-like simulation earplug is worn by user
Situation.
(5) setting pressure sensor can detect the degree of packing for filling in the earplug in earplug mouth in earplug, simulation earplug with
If plug is not into the bad phenomenon of the sound insulation of appearance between duct.Bionic ear and earplug is set to form heat by the heating of heating wire swollen
It is swollen, it allows before earplug and earplug mouth and expands the increase degree of packing, can be detected in this way through the noise reduction under degree of packing situation
Situation.
(6) two earplug mouths that through-hole carries need while testing the shared noise reduction of two earplugs, simulation people or so
The case where ear, is preferable.
(7) it is filled under identical decibels, identical sounding position and the data difference of the formation of not filling in earplug by comparing,
It can be determined that the acoustical ratings of earplug.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples；
Fig. 1 is the structure chart of the preferred embodiment of the present invention；
In figure：1, interior glass infuser；2, outer glass infuser；3, aspirating hole；4, end cap；5, heating wire；6, suspension wire；7, bionic ear；
8, through-hole；9, sound level meter；10, buzzer or loudspeaker；11, earplug.
Specific implementation mode
Presently in connection with drawings and examples, the present invention is described in further detail, these attached drawings are simplified signal
Figure, the basic structure of the invention will be illustrated schematically only, therefore it only shows the composition relevant to the invention.
As shown in Figure 1, a kind of anti-acoustic capability test device of industrial noise protective earplug, including：Blimp and setting
Bionic ear 7 in blimp is additionally provided with several sound source parts in blimp；Blimp includes vacuum cylinder and can be close
The end cap 4 at vacuum cylinder both ends is covered, vacuum cylinder includes the alternate interior glass infuser 1 being set-located and outer glass infuser 2；It is logical
It crosses using double-deck inside and outside glass infuser 2, blimp can be allowed to generate soundproof effect by vacuum gap condition, provided for test
One good sound insulation environment.End cap 4 can carry out sound insulation processing by covering acoustic material, ensure that blimp integrally plays
The effect of sound insulation.Vacuum degree can be controlled by the operation vacuumized, it is easy to operate to ensure corresponding sound insulation background condition.
Bionic ear 7 is made of acoustic material, and through-hole 8 is offered on bionic ear 7, at least one sound level meter is equipped in through-hole 8
9, respectively one earplug mouth of setting, tested earplug 11 can be filled in earplug mouth at through-hole 8 both ends.It is logical by being made on bionic ear 7
Then sound level meter 9 is arranged in through-hole 8, just simulates the relationship between duct and ear-drum in this way, is more nearly listening for people for hole 8
Power receives, sound insulation and noise reduction situation when more life-like simulation earplug 11 is worn by user.
Bionic ear 7 is hung in blimp by hanging rope, ensures that interior glass infuser 1 and end cap 4 substantially will not be by connecing
Acoustic is touched, ensure that the soundproof effect of 7 part of bionic ear.In addition suspension wire 6 is by controlling length and suspension point, and then can protect
It demonstrate,proves bionic ear 7 and the relative position of sound source part holder is adjustable.It can by the position selection by being suspended in suspension wire 6 on bionic ear 7
With adjust earplug mouth on bionic ear 7 towards angle.
Bionic ear 7 is made by thermally expanding sponge, and outer glass infuser 2 is equipped with aspirating hole 3, and the connection of aspirating hole 3 vacuumizes device.
Interior glass infuser 1 is that transparent glass material is made with outer glass infuser 2, by being arranged to the glass of transparent material, can be observed interior
The case where portion tests ensures to go wrong and can be found in time in test process.
Sound source part is the buzzer or/and loudspeaker being arranged in blimp.
Heating wire 5 is also set between interior glass infuser 1 and outer glass infuser 2.Plug is equipped with pressure sensor in 11 endoporus of earplug.Earplug
Setting pressure sensor can detect the degree of packing for filling in the earplug in earplug mouth 11 in 11, simulate between earplug 11 and duct such as
Fruit plug is not into the bad phenomenon of the sound insulation of appearance.Make bionic ear 7 and earplug 11 be formed by the heating of heating wire 5 to thermally expand, allows ear
The increase degree of packing is expanded before plug 11 and earplug mouth, can be detected in this way through the noise reduction situation under degree of packing situation.
The another technical solution that the present invention uses for：A kind of test method carried out using anti-acoustic capability test device,
Include the following steps：
(1) situation one：One of blimp end cap 4 is opened, the bionic ear 7 that plug has been set to two earplugs 11 is suspended in
In blimp, covers end cap 4 and vacuumize process is carried out to aspirating hole 3 using air pump；Or,
Situation one：One of blimp end cap 4 is opened, the bionic ear 7 for setting earplug 11 will not filled in and be suspended in blimp
It is interior, it covers end cap 4 and vacuumize process is carried out to aspirating hole 3 using air pump；
(2) it is directed to situation one and situation two is once operated：The bee of different location is controlled by control device of wireless
Ring device and sound horn pass through the sound size in the detection through-hole 8 of sound level meter 9 in through-hole 8；
(3) in comparative situation one and situation two, the data that sound level meter 9 detects, and find out in sounding decibel and sounding position
Difference under unanimous circumstances between the data of two kinds of situations.
In a preferred embodiment of the present invention, it is divided into two stages in the detection process of step (2), does not heat rank
Section and heating period；Non- heating period, the heating wire 5 in vacuum cylinder body do not do heating operation；Heating period, in vacuum cylinder body
5 electrified regulation of heating wire makes bionic ear 7 and 11 equal expanded by heating of earplug, is controlled by the pressure sensor readings in earplug 11
Extruding tightness between earplug 11 and through-hole 8.By comparing earplug is filled in and does not fill under identical decibels, identical sounding position
The data difference of 11 formation, it is possible to determine that the acoustical ratings of earplug 11.
Two earplug mouths that through-hole 8 carries need while testing the shared noise reduction of two earplugs 11, simulation people or so
The case where ear, is preferable.
Based on the above description of the preferred embodiments of the present invention, through the above description, related personnel completely can be with
Without departing from the scope of the technological thought of the present invention', various changes and amendments are carried out.The technical scope of this invention
It is not limited to the contents of the specification, it is necessary to determine the technical scope according to the scope of the claims.
Claims (10)
1. a kind of anti-acoustic capability test device of industrial noise protective earplug, including：Blimp and it is arranged in blimp
Bionic ear, which is characterized in that several sound source parts are additionally provided in the blimp；
The blimp include vacuum cylinder and can sealing cover residence state the end cap at vacuum cylinder both ends, the vacuum cylinder
Including the alternate interior glass infuser being set-located and outer glass infuser；
The bionic ear is made of acoustic material, and through-hole is offered on the bionic ear, at least one make an uproar is equipped in the through-hole
Tone Detector, respectively one earplug mouth of setting, tested earplug can be filled in the earplug mouth at the through-hole both ends.
2. a kind of anti-acoustic capability test device of industrial noise protective earplug according to claim 1, it is characterised in that：Institute
It states and also sets heating wire between interior glass infuser and the outer glass infuser.
3. a kind of anti-acoustic capability test device of industrial noise protective earplug according to claim 1, it is characterised in that：Institute
It states bionic ear and is made by thermally expanding sponge.
4. a kind of anti-acoustic capability test device of industrial noise protective earplug according to claim 1, it is characterised in that：Institute
It states outer glass infuser and is equipped with aspirating hole, the aspirating hole connection vacuumizes device.
5. a kind of anti-acoustic capability test device of industrial noise protective earplug according to claim 1, it is characterised in that：Institute
It is that transparent glass material is made that interior glass infuser, which is stated, with outer glass infuser.
6. a kind of anti-acoustic capability test device of industrial noise protective earplug according to claim 1, it is characterised in that：Institute
It is the buzzer or/and loudspeaker being arranged in blimp to state sound source part.
7. a kind of anti-acoustic capability test device of industrial noise protective earplug according to claim 1, it is characterised in that：Institute
It states plug in earplug endoporus and is equipped with pressure sensor.
8. a kind of anti-acoustic capability test device of industrial noise protective earplug according to claim 1, it is characterised in that：Institute
It is sound level meter to state noise monitor.
9. the test side that a kind of anti-acoustic capability test device using as described in any claim in claim 1-8 carries out
Method, which is characterized in that include the following steps：
(1) situation one：One of blimp end cap is opened, the bionic ear that plug has been set to two earplugs is suspended in blimp
It is interior, it covers end cap and vacuumize process is carried out to aspirating hole using air pump；Or,
Situation one：One of blimp end cap is opened, the bionic ear for setting earplug will not filled in and be suspended in blimp, end is covered
Lid carries out vacuumize process using air pump to aspirating hole；
(2) it is directed to situation one and situation two is once operated：The buzzer of different location is controlled by control device of wireless
And sound horn, the sound size in through-hole is detected by the sound level meter in through-hole；
(3) in comparative situation one and situation two, the data of sound level meter detection, and find out in sounding decibel and sounding position consistency
In the case of two kinds of situations data between difference.
10. test method according to claim 9, it is characterised in that：It is divided into two in the detection process of step (2)
A stage, non-heating period and heating period；
Non- heating period, the heating wire in vacuum cylinder body do not do heating operation；
Heating period, the heating wire electrified regulation in vacuum cylinder body make bionic ear and the equal expanded by heating of earplug, by earplug
Pressure sensor readings control the extruding tightness between earplug and through-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810184420.8A CN108387644B (en) | 2018-03-07 | 2018-03-07 | Noise reduction performance testing device and testing method for industrial noise protection earplug |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810184420.8A CN108387644B (en) | 2018-03-07 | 2018-03-07 | Noise reduction performance testing device and testing method for industrial noise protection earplug |
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| CN108387644A true CN108387644A (en) | 2018-08-10 |
| CN108387644B CN108387644B (en) | 2020-11-24 |
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| CN201810184420.8A Active CN108387644B (en) | 2018-03-07 | 2018-03-07 | Noise reduction performance testing device and testing method for industrial noise protection earplug |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256002A (en) * | 2018-10-22 | 2019-01-22 | 东莞理工学院 | Noiseproof earplug teaching demonstration device |
| CN112137617A (en) * | 2020-09-06 | 2020-12-29 | 徐永美 | Main magnet uniformity detection and analysis device and method of MRI (magnetic resonance imaging) equipment |
| CN113418686A (en) * | 2021-06-04 | 2021-09-21 | 国网山东省电力公司电力科学研究院 | Method for measuring sound insulation quantity of in-ear type hearing protector |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109256002A (en) * | 2018-10-22 | 2019-01-22 | 东莞理工学院 | Noiseproof earplug teaching demonstration device |
| CN112137617A (en) * | 2020-09-06 | 2020-12-29 | 徐永美 | Main magnet uniformity detection and analysis device and method of MRI (magnetic resonance imaging) equipment |
| CN113418686A (en) * | 2021-06-04 | 2021-09-21 | 国网山东省电力公司电力科学研究院 | Method for measuring sound insulation quantity of in-ear type hearing protector |
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| Publication number | Publication date |
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| CN108387644B (en) | 2020-11-24 |
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