CN104849352B - A kind of sound insulation property detecting system - Google Patents
A kind of sound insulation property detecting system Download PDFInfo
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- CN104849352B CN104849352B CN201510223228.1A CN201510223228A CN104849352B CN 104849352 B CN104849352 B CN 104849352B CN 201510223228 A CN201510223228 A CN 201510223228A CN 104849352 B CN104849352 B CN 104849352B
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Abstract
The present invention relates to a kind of sound insulation property detecting system, including：Sound source module, is arranged inside tested place, the sound-source signal for sending non-directive radiation；Multiple acquisition modules, are respectively arranged at the inside and outside multiple test positions in the tested place, electric signal transmission are converted to control module for gathering acoustical signal, and by the acoustical signal collected；The control module, is digitized respectively for the multi-channel electric signal to receiving, and obtains multi-path digital signal, and according to the sound attenuation value of each test position of multi-path digital signal of change, examining report is automatically generated according to the sound attenuation value of multiple test positions.Technique according to the invention scheme, acoustical signal collection is carried out by multichannel, the sound insulation value for the multiple measurement positions being tested in place can accurately be judged, it is possible to carry out comprehensive assessment and obtain testing result, so as to judge the sound insulation value in tested place exactly.
Description
Technical field
The present invention relates to architectural acoustics measurement and assessment technology field, system is detected in particular to a kind of sound insulation property
System.
Background technology
At present in the closing such as meeting room place, most basic, the most important means of phonetic sound information leakage are prevented, are structures
Build sound insulation building enclosure.The most common sound insulation building enclosure in closing place includes：Door, window, wall, floor etc., wherein with door, window
For the weak link of sound insulation protection.The sound insulation property quality of building enclosure, be determine indoor acoustic intelligence whether safety it is crucial because
Element.Therefore, it is necessary to be measured to the sound insulation property of its building enclosure, with true after the completion of the closing place construction such as meeting room
Whether its fixed sound security performance reaches requirement.
Test mode of the prior art for sound insulation property is as shown in figure 1, wherein pass through signal emission module, signal
Acquisition module, calibration module, signal processing module, reverberation time measurement module, display module, storage and report generation module,
Totally seven operational modules are tested.Specifically measurement process is：
1) signal emission module sends stable state broadband noise signal to sound source room；
2) signal acquisition module gathers the voltage signal of reflection sound source room and sound receiving room's acoustic pressure in real time, and is passed along signal
Processing module；
3) sensitivity of microphone of actual measurement is transmitted to signal processing module by calibration module；
4) sound receiving room of actual measurement is transmitted to signal processing module the reverberation time by reverberation time measurement module；
5) signal processing module is according to the sound pressure signal of sound source room and sound receiving room, sensitivity of microphone value, reverberation-time meter
Oise insulation factor is calculated, and is passed along display module and storage and report generation module；
6) storage and report generation module storage measurement data and oise insulation factor result of calculation, and generate test report.
There is following defect in measurement apparatus of the prior art：
One, signal acquisition module only have the input of two channel signals, i.e. in sound source room and sound receiving room, one is acquired respectively
The sound pressure signal of individual measuring point.In laboratory environments, measurement local material or component oise insulation factor when, it is possible to use the method.
But in actual environment, such as, it is necessary to be carried out to indoor and outdoor during the building enclosure sound insulation property in place such as measurement meeting room
The sound pressure signal collection measurement of multiple spot.Utilize this device, it is impossible to complete in-site measurement task.
Secondth, above-mentioned measurement apparatus is divided into seven operational modules, and the integrated level of system is not high, can not meet simple when using
Portable principle.
The content of the invention
The technical problems to be solved by the invention are how to carry out multi-faceted test to being tested place sound insulation value, from
And detect whether the sound insulation value in tested place reaches standard exactly.
For this purpose, the present invention proposes a kind of sound insulation property detecting system, including：
Sound source module, is arranged inside tested place, and for sending sound-source signal, and the direction of the launch is non-directive spoke
Penetrate；
Multiple acquisition modules, are respectively arranged at the inside and outside multiple test positions in the tested place, for gathering
Acoustical signal, and the acoustical signal collected is converted into electric signal transmission to control module；
The control module, is digitized respectively for the multi-channel electric signal to receiving, and obtains multi-path digital signal,
It is automatic according to the sound attenuation value of multiple test positions according to the sound attenuation value of each test position of multi-path digital signal of change
Generate examining report.
Preferably, each acquisition module in the multiple acquisition module includes：
Receiving submodule, for receiving acoustical signal, is converted to electric signal by acoustical signal and amplifies, and transmits to the control mould
Block.
Preferably, the control module includes：
Submodule is calibrated, for being calibrated to the receiving submodule, and the spirit of the receiving submodule is recorded automatically
Sensitivity, transmits it to acquisition module.
Preferably, the control module includes：
Submodule is set, for setting measurement parameter according to input instruction, so that the sound source module is according to the measurement
Parameter sends sound-source signal, and the multiple acquisition module is detected according to the measurement parameter；
Display sub-module, the gathered data situation for showing each acquisition module in measurement process in real time.
Preferably, the measurement parameter includes following at least one：
Sound source module sends the type of sound-source signal, the time that tester leaves the theatre, the stabilization time of sound field, the collection
The acquisition time of module, the store path of measurement data.
Preferably, the control module includes：
Data processing submodule, for calculating 1/3 octave band acoustic attenuation of each test position in the range of predeterminated frequency
Value.
Preferably, the control module includes：
Report generation submodule, the measurement for the relevant information according to the tested place and the acquisition module is joined
Number, to generate form in real time.
Preferably, each acquisition module in the multiple acquisition module includes：
Submodule is sensed, for induced environment parameter；
Submodule is moved, for being moved according to the ambient parameter, until the location circumstances parameter moved to and default ring
Border parameter is consistent, then the position that will be moved to is used as the test position.
Preferably, the ambient parameter includes following at least one：Brightness, temperature, air mass flow.
According to above-mentioned technical proposal, acoustical signal collection is carried out by multichannel, can be to multiple measurements in tested place
The sound insulation value of position is accurately judged, it is possible to is carried out comprehensive assessment and is obtained testing result, so as to judge exactly tested
The sound insulation value in place.And can be by optical sensor, temperature sensor, air flow sensor induced environment parameter with true
Surely the position of sound insulation value weakness relatively in place is tested, and then Automatic-searching position is detected, improves detection operation
Intelligence degree and automaticity.
Brief description of the drawings
The features and advantages of the present invention can be more clearly understood from by reference to accompanying drawing, accompanying drawing is schematical without that should manage
Solve to carry out any limitation to the present invention, in the accompanying drawings：
Fig. 1 shows the schematic diagram of the test of sound insulation in the prior art；
Fig. 2 shows the schematic block diagram of sound insulation test system according to an embodiment of the invention；
Fig. 3 shows the arrangement schematic diagram of sound insulation test according to an embodiment of the invention；
Fig. 4 shows that signal according to an embodiment of the invention flows to schematic diagram.
Embodiment
The above objects, features and advantages of the present invention can be more clearly understood that, below in conjunction with the accompanying drawings and specific implementation
The present invention is further described in detail mode.It should be noted that in the case where not conflicting, embodiments herein
And the feature in embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
Implemented with being different from other modes described here using other, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
As shown in Fig. 2 sound insulation property detecting system 10 according to an embodiment of the invention, including：
Sound source module 11, is arranged inside tested place, and for sending sound-source signal, and the direction of the launch is non-directive spoke
Penetrate；
Multiple acquisition modules 12, are respectively arranged at the inside and outside multiple test positions in tested place, for gathering sound
Signal, and the acoustical signal collected is converted into electric signal transmission to control module；
Control module 13, is digitized respectively for the multi-channel electric signal to receiving, and obtains multi-path digital signal, root
According to the sound attenuation value of each test position of multi-path digital signal of change, inspection is automatically generated according to the sound attenuation value of multiple test positions
Observe and predict announcement.
As shown in figure 3, the acoustical signal that the present invention is sent using multiple acquisition modules 12 to sound source module 11 is detected, often
Individual acquisition module can carry out wire communication with control module, can also carry out radio communication.Wherein, what sound source module was sent makes an uproar
Sound type can be arranged as required to, generally, and sound source module can be set only to send stable state broadband white noise.
Control module 13 can be digitized by multiple signal input channels to the signal received, specifically, often
Individual passage can be digitized with 51.2kHz speed to input signal, and support integrated circuit piezoelectric formula and non-integration
Circuit piezoelectric transducer, the HDR with 102dB.Specific signal flow direction is as shown in Figure 4.
Multiple acquisition modules can be arranged as needed, for example, be arranged in the inner side and outer side of the wall in tested place,
Door, the inner side and outer side of window in tested place can be arranged in, because door, window equal thickness are relatively thin, sound insulation property opposing sides compared with
It is weak, so the sound insulation property by detecting the positions such as door, window, can more accurately assess the overall sound insulation property in tested place.
Preferably, each acquisition module 12 in multiple acquisition modules 12 includes：
Receiving submodule 121, for receiving acoustical signal, is converted to electric signal by acoustical signal and amplifies, and transmits to the control
Molding block.
Receiving submodule can be specifically microphone and preamplifier.
Preferably, control module 13 includes：
Submodule 131 is calibrated, for being calibrated to receiving submodule, and the sensitivity of record receiving submodule automatically,
Transmit it to acquisition module 12.
Preferably, control module 13 includes：
Submodule 133 is set, for setting measurement parameter according to input instruction, so that sound source module is sent out according to measurement parameter
Go out sound-source signal, and multiple acquisition modules is detected according to measurement parameter；
Display sub-module 132, the gathered data situation for showing each acquisition module in measurement process in real time.
Display sub-module can be Touch-control liquid crystal display screen, and user can input specific measurement parameter by it, also may be used
To show real-time measuring data, the testing result that control module is obtained by processing can also be shown by it, so that user looks into
See.
Set submodule wiredly and/or wirelessly to be communicated with acquisition module and sound source module, its measurement ginseng is set
Number.
Preferably, measurement parameter includes following：
Sound source module sends the type of sound-source signal, the time that tester leaves the theatre, the stabilization time of sound field, the collection
The acquisition time of module, the store path of measurement data.Certainly, except setting above-mentioned measurement parameter, other can also be set to join
Number, for example, set the acquisition module for needing to activate.
Preferably, control module 13 includes：
Data processing submodule 134, declines for calculating 1/3 octave band sound of each test position in the range of predeterminated frequency
Depreciation.
Specifically, the average sound inside place can be calculated after the sound pressure level of multiple positions inside the tested place of detection
Arbitrarily downgrade
Wherein, LjRepresent in m measurement position, the sound pressure level of different measurement positions, m represents the number of point position.
Then the sound attenuation value of measurement position in 1/3 octave band 100~3150Hz frequency ranges is calculated
Wherein, R represents the sound attenuation value to be calculated；KiRepresent the base of i-th of frequency band in air-borne sound sound insulation datum curve
Quasi- value；DiRepresent the indoor and outdoor sound pressure level difference of i-th of frequency band；PiUnfavorable deviation is represented,
Wherein, when using 1/3 octave band measurement, sound attenuation value R is PiMeet formula
When maximum, wherein, i represents the sequence number of frequency band, represents 16 1/3 octave bands in the range of 100~3150Hz.
Preferably, control module 13 includes：
Report generation submodule 135, the relevant information in place and the measurement parameter of acquisition module are tested for basis, with
Form is generated in real time.
Relevant parameter can include the essential information in tested place, such as time of measuring, the place in tested place, tested field
Length, width and height, survey crew's information etc., the information of each module in system 10 can also be included, for example, measure duration.
It is visible according to above-mentioned technical proposal, multiple functional modules are integrated with the control module in the application, so as to
Numerous functions are realized by control module, and control module can then be easy to carry as a separate hardware.
Preferably, each acquisition module 12 in multiple acquisition modules 12 includes：
Submodule 123 is sensed, for induced environment parameter；
Submodule 124 is moved, for being moved according to ambient parameter, until the location circumstances parameter moved to and default environment
Parameter is consistent, then the position that will be moved to is as test position.
Preferably, ambient parameter includes following at least one：Brightness, temperature, air mass flow.
Correspondingly, sensing submodule can include optical sensor, temperature sensor, air flow sensor etc..General feelings
Under condition, the position such as door, window being tested in place, because its structure opposing sides is relatively thin, so air is more easy to penetrate into so that these
The air mass flow of position is larger, then by air flow sensor, can be tested automatic detection air mass flow maximum in place
Position stop, and communicated with corresponding acquisition module so that corresponding acquisition module be moved to the position outside
Portion, so as to realize automatic detection.
Certainly, in door, these positions of window, its temperature also exists poor with wall and indoor general position in some cases
It is different, such as in winter, then door, these positions of window temperature it is relatively low, then can pass through temperature sensor senses environment temperature
Spend to be automatically moved into these positions.And the translucency opposing sides of these positions are stronger, so light sensing can also be passed through
Device induced environment light intensity is automatically moved into these positions.And then automatic detection is realized, improve the automation and intellectuality of detection
Degree.
In view of in the prior art, sound insulation property detection is difficult to whether the tested place of accurate judgement suits the requirements.According to this
The technical scheme of invention, by multichannel carry out sound-source signal collection, can be tested place in multiple measurement positions every
Sound performance is accurately judged, it is possible to is carried out comprehensive assessment and is obtained testing result, thus judge exactly tested place every
Sound performance.And tested field can be determined by optical sensor, temperature sensor, air flow sensor induced environment parameter
In sound insulation value weak position relatively, and then Automatic-searching position detected, improves the intelligent journey that detection is operated
Degree and automaticity.
In the present invention, term " multiple " refers to two or more, unless otherwise clear and definite restriction.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (7)
1. a kind of sound insulation property detecting system, it is characterised in that including：
Sound source module, is arranged inside tested place, for sending sound-source signal, and the direction of the launch radiates for non-directive；
Multiple acquisition modules, are respectively arranged at the inside and outside multiple test positions in the tested place, for gathering sound letter
Number, and the acoustical signal collected is converted into electric signal transmission to control module；
The control module, is digitized respectively for the multi-channel electric signal to receiving, and obtains multi-path digital signal, according to
The sound attenuation value of each test position of multi-path digital signal of change, is automatically generated according to the sound attenuation value of multiple test positions
Examining report；
Each acquisition module in the multiple acquisition module includes：
Submodule is sensed, for induced environment parameter；
Submodule is moved, for being moved according to the ambient parameter, until the location circumstances parameter moved to is joined with default environment
Number is consistent, then the position that will be moved to is used as the test position；
The ambient parameter includes following at least one：Brightness, temperature, air mass flow.
2. sound insulation property detecting system according to claim 1, it is characterised in that each in the multiple acquisition module adopting
Collection module includes：
Receiving submodule, for receiving acoustical signal, is converted to electric signal by acoustical signal and amplifies, and transmits to the control module.
3. sound insulation property detecting system according to claim 2, it is characterised in that the control module includes：
Submodule is calibrated, for being calibrated to the receiving submodule, and the sensitivity of the receiving submodule is recorded automatically,
Transmit it to acquisition module.
4. sound insulation property detecting system according to claim 1, it is characterised in that the control module includes：
Submodule is set, for setting measurement parameter according to input instruction, so that the sound source module is sent according to the parameter
Sound-source signal, and the multiple acquisition module is detected according to the measurement parameter；
Display sub-module, the gathered data situation for showing each acquisition module in measurement process in real time.
5. sound insulation property detecting system according to claim 4, it is characterised in that the measurement parameter includes following at least one
Kind：
Sound source module sends the type of sound-source signal, the time that tester leaves the theatre, the stabilization time of sound field, the acquisition module
Acquisition time, the store path of measurement data.
6. sound insulation property detecting system according to claim 1, it is characterised in that the control module includes：
Data processing submodule, for calculating 1/3 octave band sound attenuation value of each test position in the range of predeterminated frequency.
7. sound insulation property detecting system according to claim 6, it is characterised in that the control module includes：
Report generation submodule, for the relevant information and the measurement parameter of the acquisition module according to the tested place,
To generate form in real time.
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| CN109374736B (en) * | 2018-10-31 | 2021-03-16 | 四川工程职业技术学院 | Detect sound insulation material sound-proof properties's device |
| CN109324120A (en) * | 2018-11-30 | 2019-02-12 | 重庆长安汽车股份有限公司 | A kind of speed changer sound transmission loss test method and test macro |
| CN110196282A (en) * | 2019-05-19 | 2019-09-03 | 湖北嘉辐达节能科技股份有限公司 | A kind of centrifugally glass-wool sound absorption qualities detection device |
| CN110133111B (en) * | 2019-05-22 | 2021-10-08 | 中车长春轨道客车股份有限公司 | Sound insulation testing device for high-speed rail wall plate in ultralow temperature environment and using method of sound insulation testing device |
| CN111143962B (en) * | 2019-11-12 | 2022-03-22 | 西南交通大学 | Sound insulation evaluation method and device |
| CN112129836B (en) * | 2020-09-30 | 2023-11-21 | 广州新静界声学科技股份有限公司 | Sound insulation measuring method for building functional wall surface |
| 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 |
| CN113188653B (en) * | 2021-04-25 | 2022-10-11 | 机械工业第九设计研究院股份有限公司 | Building sound insulation performance detection and evaluation method and system |
| CN117740950A (en) * | 2024-02-20 | 2024-03-22 | 四川名人居门窗有限公司 | System and method for determining and feeding back sound insulation coefficient of glass |
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