CN104849352A - Sound-insulation performance detection system - Google Patents
Sound-insulation performance detection system Download PDFInfo
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- CN104849352A CN104849352A CN201510223228.1A CN201510223228A CN104849352A CN 104849352 A CN104849352 A CN 104849352A CN 201510223228 A CN201510223228 A CN 201510223228A CN 104849352 A CN104849352 A CN 104849352A
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Abstract
The invention relates to a sound-insulation performance detection system. The system comprises a sound source module, a plurality of acquisition modules and a control module. The sound source module is arranged in a place to be detected and is used for sending out non-directional radiation sound source signals. The plurality of the acquisition modules are arranged at a plurality of detection positions in and out of the place to be detected respectively and are used for acquiring sound signals and converting the acquired sound signals into electrical signals. The control module is used for digitizing a plurality of the received electrical signals respectively to obtain a plurality of digital signals, calculating sound attenuation value of each detection position according to the plurality of the digital signals and generating detection reports according to the sound attenuation values of the plurality of the detection positions automatically. By means of the system, sound signal acquisition is performed through a plurality of channels, and accordingly, the sound-insulation performance of the plurality of the detection positions in the place to be detected can be determined accurately and evaluated comprehensively to obtain detection results, and the sound-insulation performance of the place to be detected is determined accurately.
Description
Technical field
The present invention relates to architectural acoustics to measure and assessment technology field, in particular to a kind of sound insulation property detection system.
Background technology
At present in the closed places such as meeting room, preventing the most basic, the most important means of phonetic sound information leakage, is build sound insulation building enclosure.Close the modal sound insulation building enclosure in place to comprise: door, window, wall, floor etc., wherein with the weak link that door, window are sound insulation protection.The sound insulation property quality of building enclosure is the key factor determining that whether indoor acoustic intelligence is safe.Therefore, after the closed place construction such as meeting room complete, need to measure the sound insulation property of its building enclosure, to determine whether its sound security performance reaches requirement.
Test mode for sound insulation property of the prior art as shown in Figure 1, wherein by 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.Concrete measuring process is:
1) signal emission module sends stable state broadband noise signal to sound source room;
2) voltage signal of signal acquisition module Real-time Collection reflection sound source room and sound receiving room's acoustic pressure, and passed to signal processing module;
3) sensitivity of microphone of actual measurement is passed to signal processing module by calibration module;
4) sound receiving room of actual measurement is passed to signal processing module the reverberation time by reverberation time measurement module;
5) signal processing module calculates oise insulation factor according to the sound pressure signal of sound source room and sound receiving room, sensitivity of microphone value, reverberation time, and is passed to display module and storage and report generation module;
6) to store and report generation module stores measurement data and oise insulation factor result of calculation, and generate test report.
There is following defect in measurement mechanism of the prior art:
One, signal acquisition module only have two channel signal inputs, that is, in sound source room and sound receiving room, acquire the sound pressure signal of a measuring point respectively.In laboratory environments, during the oise insulation factor of also measure local material or component, the method can be utilized.But in actual environment, when such as measuring the building enclosure sound insulation property in the places such as meeting room, need to measure indoor, the outdoor sound pressure signal collection all carrying out multiple spot.Utilize this device, in-site measurement task cannot be completed.
The second, above-mentioned measurement mechanism is divided into seven operational modules, and the integrated level of system is not high, cannot meet simply portable principle during use.
Summary of the invention
Technical matters to be solved by this invention is, how to carry out multi-faceted test to tested place sound insulation value, thus whether the sound insulation value detecting tested place exactly reaches standard.
For this purpose, the present invention proposes a kind of sound insulation property detection system, comprising:
Sound source module, be arranged at tested place inner, for sending sound-source signal, and transmit direction is non-directive radiation;
Multiple acquisition module, being arranged at multiple detection positions that described tested place is inside and outside respectively, for gathering acoustical signal, and the acoustical signal collected being converted to electric signal transmission to control module;
Described control module, for carrying out digitizing respectively to the multi-channel electric signal received, obtain multiply digital signals, calculate the sound attenuation value of each detection position according to described multiply digital signals, the sound attenuation value according to multiple detection position generates examining report automatically.
Preferably, each acquisition module in described multiple acquisition module comprises:
Receive submodule, for receiving acoustical signal, acoustical signal being converted to electric signal and amplifying, transferring to described control module.
Preferably, described control module comprises:
Calibration submodule, for calibrating described reception submodule, and automatically recording the sensitivity of described reception submodule, transmitting it to acquisition module.
Preferably, described control module comprises:
Submodule being set, for arranging measurement parameter according to input instruction, to make described sound source module send sound-source signal according to described measurement parameter, and described multiple acquisition module being detected according to described measurement parameter;
Display sub-module, for the image data situation of each acquisition module in real-time display measurement process.
Preferably, described measurement parameter comprises following at least one:
Sound source module sends the type of sound-source signal, time that tester leaves the theatre, the stabilization time of sound field, the acquisition time of described acquisition module, the store path of measurement data.
Preferably, described control module comprises:
Data processing submodule, for calculating the 1/3 octave band sound attenuation value of each detection position within the scope of predeterminated frequency.
Preferably, described control module comprises:
Report generation submodule, for according to the relevant information in described tested place and the measurement parameter of described acquisition module, with real-time generating report forms.
Preferably, each acquisition module in described multiple acquisition module comprises:
Inductor module, for induced environment parameter;
Motion submodule, for moving according to described environmental parameter, until the location circumstances parameter moved to conforms to default environmental parameter, then using the position that moves to as described detection position.
Preferably, described environmental parameter comprises following at least one: brightness, temperature, air mass flow.
According to technique scheme, acoustical signal collection is carried out by hyperchannel, accurately can judge the sound insulation value of the multiple measuring positions in tested place, and comprehensive assessment can be carried out obtain testing result, thus judge the sound insulation value in tested place exactly.And can by optical sensor, temperature sensor, air flow sensor induced environment parameter with the position determining that in tested place, sound insulation value is relatively weak, and then Automatic-searching position is detected, improve intelligence degree and the automaticity of detection operation.
Accompanying drawing explanation
Can understanding the features and advantages of the present invention clearly by reference to accompanying drawing, accompanying drawing is schematic and should not be construed as and carry out any restriction to the present invention, in the accompanying drawings:
Fig. 1 shows the schematic diagram of sound insulation test in prior art;
Fig. 2 shows the schematic block diagram of sound insulation test macro according to an embodiment of the invention;
Fig. 3 shows the layout schematic diagram of the test of sound insulation according to an embodiment of the invention;
Fig. 4 shows signal according to an embodiment of the invention and flows to schematic diagram.
Embodiment
Can more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
As shown in Figure 2, sound insulation property detection system 10 according to an embodiment of the invention, comprising:
Sound source module 11, be arranged at tested place inner, for sending sound-source signal, and transmit direction is non-directive radiation;
Multiple acquisition module 12, being arranged at multiple detection positions that tested place is inside and outside respectively, for gathering acoustical signal, and the acoustical signal collected being converted to electric signal transmission to control module;
Control module 13, for carrying out digitizing respectively to the multi-channel electric signal received, obtains multiply digital signals, calculates the sound attenuation value of each detection position according to multiply digital signals, and the sound attenuation value according to multiple detection position generates examining report automatically.
As shown in Figure 3, the acoustical signal that the present invention adopts multiple acquisition module 12 pairs of sound source modules 11 to send detects, and each acquisition module and control module can carry out wire communication, also can carry out radio communication.Wherein, the noise type that sound source module sends can be arranged as required, generally, can arrange sound source module and only send stable state broadband white noise.
Control module 13 can carry out digitizing to the received signal by multiple signal input channel, particularly, each passage can carry out digitizing with the speed of 51.2kHz to input signal, and support integrated circuit piezoelectric formula and non-integrated circuit piezoelectric transducer, there is the high dynamic range of 102dB.Concrete signal flows to as shown in Figure 4.
Multiple acquisition module can be arranged as required, such as be arranged in the inner side and outer side of the wall in tested place, also the door in tested place, the inner side and outer side of window can be arranged in, because door, window equal thickness are thinner, sound insulation property opposing sides is more weak, so pass through the sound insulation property of the position such as detecting gate, window, the overall sound insulation property in tested place can be assessed more exactly.
Preferably, each acquisition module 12 in multiple acquisition module 12 comprises:
Receive submodule 121, for receiving acoustical signal, acoustical signal being converted to electric signal and amplifying, transferring to described control module.
Receiving submodule can be specifically microphone and prime amplifier.
Preferably, control module 13 comprises:
Calibration submodule 131, for calibrating reception submodule, and record receives the sensitivity of submodule automatically, transmits it to acquisition module 12.
Preferably, control module 13 comprises:
Submodule 133 being set, for arranging measurement parameter according to input instruction, to make sound source module send sound-source signal according to measurement parameter, and multiple acquisition module being detected according to measurement parameter;
Display sub-module 132, for the image data situation of each acquisition module in real-time display measurement process.
Display sub-module can be Touch-control liquid crystal display screen, and user can input concrete measurement parameter by it, also can show real-time measuring data, and control module also can be shown by it, so that user checks through processing the testing result obtained.
Submodule is set and can carries out wired and/or radio communication with acquisition module and sound source module, its measurement parameter is set.
Preferably, measurement parameter comprises following:
Sound source module sends the type of sound-source signal, time that tester leaves the theatre, the stabilization time of sound field, the acquisition time of described acquisition module, the store path of measurement data.Certainly, except arranging above-mentioned measurement parameter, other parameters can also be set, such as, the acquisition module needing to activate is set.
Preferably, control module 13 comprises:
Data processing submodule 134, for calculating the 1/3 octave band sound attenuation value of each detection position within the scope of predeterminated frequency.
Particularly, after the sound pressure level detecting inner multiple position, tested place, the average sound pressure level of inside, place can be calculated
Wherein, L
jrepresent that in m measuring position, the sound pressure level of different measuring position, m represents the number of point position.
Then the sound attenuation value of measuring position in 1/3 octave band 100 ~ 3150Hz frequency range is calculated
Wherein, R represents the sound attenuation value that will calculate; K
irepresent the reference value of i-th frequency band in air-borne sound sound insulation datum curve; D
irepresent the indoor and outdoor sound pressure level difference of i-th frequency band; P
irepresent unfavorable deviation,
Wherein, when adopting 1/3 octave band to measure, sound attenuation value R is P
imeet formula
Time maximal value, wherein, i represents the sequence number of frequency band, represents 16 1/3 octave bands within the scope of 100 ~ 3150Hz.
Preferably, control module 13 comprises:
Report generation submodule 135, for according to the relevant information in tested place and the measurement parameter of acquisition module, with real-time generating report forms.
Correlation parameter can comprise the essential information in tested place, and the place in such as Measuring Time, tested place, the length, width and height, survey crew information etc. in tested place, also can comprise the information of each module in system 10, such as, measure duration.
Visible according to technique scheme, be integrated with multiple functional module in the control module in the application, thus can realize numerous function by control module, control module then as a separate hardware, can be easy to carry.
Preferably, each acquisition module 12 in multiple acquisition module 12 comprises:
Inductor module 123, for induced environment parameter;
Motion submodule 124, for environmentally movement parameter, until the location circumstances parameter moved to conforms to default environmental parameter, then using the position that moves to as detection position.
Preferably, environmental parameter comprises following at least one: brightness, temperature, air mass flow.
Correspondingly, inductor module can comprise optical sensor, temperature sensor, air flow sensor etc.Generally, the positions such as the door in tested place, window, because its structure opposing sides is thinner, so air more easily infiltrates, make the air mass flow of these positions comparatively large, then pass through air flow sensor, in tested place, automatically can detect the maximum position of air mass flow stop, and and the acquisition module corresponding with it communicate, make corresponding acquisition module move to the outside of this position, thus realize automatically detecting.
Certainly, in door, these positions of window, its temperature also there are differences, such as, in winter with wall and indoor general position in some cases, so the temperature of door, these positions of window is relatively low, then can automatically move to these positions by temperature sensor senses environment temperature.And the light transmission opposing sides of these positions is comparatively strong, so also can automatically move to these positions by optical sensor induced environment light intensity.And then realize automatically detecting, improve the robotization and intelligence degree that detect.
Consider in prior art, sound insulation property detects and is difficult to accurately judge whether tested place suits the requirements.According to technical scheme of the present invention, sound-source signal collection is carried out by hyperchannel, accurately can judge the sound insulation value of the multiple measuring positions in tested place, and comprehensive assessment can be carried out obtain testing result, thus judge the sound insulation value in tested place exactly.And can by optical sensor, temperature sensor, air flow sensor induced environment parameter with the position determining that in tested place, sound insulation value is relatively weak, and then Automatic-searching position is detected, improve intelligence degree and the automaticity of detection operation.
In the present invention, term " multiple " refers to two or more, unless otherwise clear and definite restriction.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a sound insulation property detection system, is characterized in that, comprising:
Sound source module, be arranged at tested place inner, for sending sound-source signal, and transmit direction is non-directive radiation;
Multiple acquisition module, being arranged at multiple detection positions that described tested place is inside and outside respectively, for gathering acoustical signal, and the acoustical signal collected being converted to electric signal transmission to control module;
Described control module, for carrying out digitizing respectively to the multi-channel electric signal received, obtain multiply digital signals, calculate the sound attenuation value of each detection position according to described multiply digital signals, the sound attenuation value according to multiple detection position generates examining report automatically.
2. sound insulation property detection system according to claim 1, it is characterized in that, each acquisition module in described multiple acquisition module comprises:
Receive submodule, for receiving acoustical signal, acoustical signal being converted to electric signal and amplifying, transferring to described control module.
3. sound insulation property detection system according to claim 2, it is characterized in that, described control module comprises:
Calibration submodule, for calibrating described reception submodule, and automatically recording the sensitivity of described reception submodule, transmitting it to acquisition module.
4. sound insulation property detection system according to claim 1, it is characterized in that, described control module comprises:
Submodule being set, for arranging measurement parameter according to input instruction, to make described sound source module send sound-source signal according to described parameter, and described multiple acquisition module being detected according to described measurement parameter;
Display sub-module, for the image data situation of each acquisition module in real-time display measurement process.
5. sound insulation property detection system according to claim 4, it is characterized in that, described measurement parameter comprises following at least one:
Sound source module sends the type of sound-source signal, time that tester leaves the theatre, the stabilization time of sound field, the acquisition time of described acquisition module, the store path of measurement data.
6. sound insulation property detection system according to claim 1, it is characterized in that, described control module comprises:
Data processing submodule, for calculating the 1/3 octave band sound attenuation value of each detection position within the scope of predeterminated frequency.
7. sound insulation property detection system according to claim 6, it is characterized in that, described control module comprises:
Report generation submodule, for according to the relevant information in described tested place and the measurement parameter of described acquisition module, with real-time generating report forms.
8. sound insulation property detection system according to any one of claim 1 to 7, is characterized in that, each acquisition module in described multiple acquisition module comprises:
Inductor module, for induced environment parameter;
Motion submodule, for moving according to described environmental parameter, until the location circumstances parameter moved to conforms to default environmental parameter, then using the position that moves to as described detection position.
9. sound insulation property detection system according to claim 8, it is characterized in that, described environmental parameter comprises following at least one: brightness, temperature, air mass flow.
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| 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 |
| 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 |
| CN113188653A (en) * | 2021-04-25 | 2021-07-30 | 机械工业第九设计研究院有限公司 | 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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