CN105986745A - Double-layer active sound insulation window - Google Patents
Double-layer active sound insulation window Download PDFInfo
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- CN105986745A CN105986745A CN201510094309.6A CN201510094309A CN105986745A CN 105986745 A CN105986745 A CN 105986745A CN 201510094309 A CN201510094309 A CN 201510094309A CN 105986745 A CN105986745 A CN 105986745A
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Abstract
The invention discloses a double-layer active sound insulation window which comprises double-layer glass, a window frame and a feedforward type active noise control device. The active noise control system comprises control sound sources, a reference sensor, error sensors, a peripheral circuit and an active controller. The control sound sources are embedded in the window frame and arranged on the outer sides of the four corners of a sealed cavity defined by the double-layer glass and the window frame. The error sensors are arranged on the inner sides of the four corners in the sealed cavity defined by the double-layer glass and the window frame. The reference sensor is arranged below the active sound insulation window. According to the double-layer active sound insulation window, medium-high frequency noise is insulated through the double-layer glass and the cavity structure, low-frequency noise entering the cavity is controlled through the active noise device, and the low-frequency noise is restrained to enter a room through the glass. By the adoption of the double-layer active sound insulation window, noise can be effectively insulated within a wide-frequency range, noise pollution is prevented and controlled, and the lighting performance of the window is not affected at all.
Description
Technical field
The present invention relates to a kind of noise control system, the active noise control system used especially with regard to a kind of building doors and windows.
Background technology
City noise is day by day serious for interference and the harm of resident in recent years, has become as big public hazards of urban environment.City
Noise mainly has: traffic noise, industrial noise, construction noise pollution, noise of social activities.The work of city noise interference resident
Make, learn, have a rest and sleep, serious also can the health of harmful to human, cause disease and noise deaf.And architecture indoor
The noise of more than 80% is all entered by window and door, building doors and windows is carried out noise abatement imperative.
At present the most a large amount of exist the monolayers using the glass that the oise insulation factors such as double glazing, doubling glass are higher to make or bilayer every
Sound window product, these sound proof windows have higher oise insulation factor to high-frequency noises, therefore can obtain the A note power sound insulation that numerical value is higher
Value.But for the low-frequency noise of below 200Hz, traditional sound proof window product is then difficult to play sound insulation effect, thus greatly shadow
Ring the practicality of sound proof window, it is impossible to promote the comfortableness of architecture indoor.
Summary of the invention
For the problems referred to above, it is an object of the invention to provide active noise control system, in the medium-high frequency not affecting common sound proof window
While sound insulation property, application Technique of Active Noise Control suppression enters the low-frequency noise of sound proof window cavity, significantly improves sound proof window
Sound insulation room amount, makes architecture indoor obtain real quiet comfortable environment.The method can be widely used in building doors and windows,
There is in 100Hz-4000Hz frequency range higher oise insulation factor.During the active guidance system of the active sound proof window of bilayer of the present invention is installed,
Control sound source and error pick-up are positioned over the corner of sound proof window cavity, and reference sensor, peripheral circuit and active controller are placed
In the outer lower side of sound proof window, do not account for the daylighting region of sound proof window glass, the lighting performance of sound proof window is not produced any impact.
The above-mentioned purpose of the present invention is that the design that actively sound source controls by active noise control system reaches, its concrete technology
Scheme is as follows:
The active sound proof window of bilayer of the present invention is surrounded closing cavity structure by two-layer plate glass and window frame, and medium-high frequency is made an uproar by this structure
Acoustic energy is effectively isolated.Be made up of control sound source, reference sensor, error pick-up, peripheral circuit and active controller is active
Oise damping means suppression low-frequency noise is to indoor propagation.
Described control sound source is embedded in window frame, is placed in outside the corner closing cavity surrounded by double glazing and window frame.Described
Error pick-up is placed in inside the corner of the closing cavity inside that described double glazing surrounds with described window frame.Described reference sensor
It is placed in active sound proof window outer lower side.Described error microphone is made for gathering the noise signal entered in described active sound proof window cavity
For error signal, described reference sensor noise signal before entering collecting window is as reference signal, error signal and reference
Signal is transmitted separately to described peripheral circuit, and described peripheral circuit transmits to described Active control after the error signal received being amplified
Device, described active controller is multi-channel active controller, and described multi-channel active controller is based on error signal and reference signal
Carry out multi-channel coupling computing and generate control signal, and by the transmission of described control signal to described peripheral circuit, described peripheral circuit
Inputting described control sound source after amplifying the control signal received, low-frequency noise is entered by described control sound source with the control signal received
Row controls to absorb.
The active sound proof window of bilayer of the present invention, wherein said thickness of glass is 5mm-20mm, front and back glass described in two-layer and described window
Frame surrounds closed cavity, isolates high-frequency noises.
The active sound proof window of bilayer of the present invention, wherein said glass is plate glass, including ordinary plate glass, safety glass,
Sand blasting glass, pattern glass, double glazing, doubling glass etc..
The active sound proof window of bilayer of the present invention, wherein said window frame is common door window profile, including aluminium alloy extrusions, plastic-steel section bar,
Wooden profile material and aluminium-wood composite section etc..
The active sound proof window of bilayer of the present invention, wherein said control sound source is speaker, and described control sound source is embedded in window frame,
It is placed in outside the corner closing cavity surrounded by described double glazing and described window frame.
The active sound proof window of bilayer of the present invention, wherein said reference sensor is electret microphone, be placed in described bilayer active every
Sound lower section outside window.
The active sound proof window of bilayer of the present invention, wherein said error pick-up is electret microphone, be placed in described double glazing with
Inside the corner closing cavity inside that described window frame surrounds.
The active sound proof window of bilayer of the present invention, wherein said peripheral circuit includes that 4 tunnel error signal filter amplification circuit, 1 LUSHEN are examined
Signal filtering amplifying circuit, 4 tunnel control signal filter amplification circuit.
The active sound proof window of bilayer of the present invention, wherein said active controller is multi-channel active controller, uses multichannel Fx-LMS
Algorithm.
The master of the present invention passively combines the door and window ventilation unit of sound absorption and has the advantage that
1, the double glazing of double-deck active sound proof window adds the air layer closed in cavity preferably sound insulation property to high-frequency noises.
2, the active noise control that device reference sensor, error pick-up, control sound source, peripheral circuit and active controller are constituted
System processed, uses Technique of Active Noise Control, makes full use of the Active control technology unique advantage in low frequency field, control noise
In reason, the most intractable below 200Hz low-frequency noise is administered pointedly, meets the sound insulation room demand of door and window.
3, multi-channel active controller uses multichannel Fx-LMS algorithm, and this algorithm is feed-forward control algorithm, can be effectively prevented
The problem that control signal dissipates, significantly improves low-frequency noise control accuracy.
4, the active noise control system of present invention placement location in sound proof window is hidden, with soundproof window with the use of, with sound proof window
Window is molten to be integrated, it is simple to sound proof window outward appearance Beautification design.Systematic function is superior, easy to operate, easy to maintenance.
Accompanying drawing explanation
Fig. 1 is the structure composition schematic diagram of the double-deck active sound proof window of the present invention.
Fig. 2 is the present invention double-deck active sound proof window sound insulation property test system schematic.
Fig. 3 is that the double-deck active sound proof window active guidance system of the present invention controls access diagram.
Fig. 4 is the double-deck active sound proof window sound insulation property curve chart of the present invention
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, to this
Bright it is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to
Limit the present invention.
As in figure 2 it is shown, the active sound proof window of the bilayer of the present invention is arranged on the test wall of sound insulation measurement laboratory, outside sound proof window
Shape size is long 1200mm X width 1000mm.Described glass is the ordinary plate glass of thickness 5.0mm, and cavity thickness is 20.0mm.
Described window frame is solid wood structure, the reserved round installing hole of diameter 120mm on window frame.
Described control sound source is arranged in the installing hole of described window frame, totally 8, is placed in the closing surrounded by double glazing and window frame
Outside the corner of cavity, the company at each angle controls sound source and is unified into a passage, and 8 control sound sources form 4 tunnels altogether and control logical
Road, as shown in Figure 3.
Described error pick-up is placed in inside the corner of the closing cavity inside that described double glazing surrounds with described window frame, totally 4.
Being sounding room (9) on the left of the active sound proof window of described bilayer, described reference sensor is placed in outer lower side on the left of active sound proof window,
Described signal source (10) exports the input of all kinds of noisy analog signal and sends radiated noise to noise source speaker (11).
Described error microphone for gathering the noise signal entered in described active sound proof window cavity as error signal, described ginseng
Examine sensor noise signal before entering collecting window and be transmitted separately to as reference signal, error signal and reference signal described
Peripheral circuit, described peripheral circuit transmits to described active controller, described active controller after the error signal received being amplified
For multi-channel active controller, described multi-channel active controller carries out multi-channel coupling computing based on error signal and reference signal
Generate control signal, and by described control signal transmission to described peripheral circuit, the control signal received is put by described peripheral circuit
Inputting described control sound source after big, low-frequency noise is controlled absorbing by described control sound source with the control signal received.
It is receiving chamber (12) on the right side of the active sound proof window of described bilayer, described receiving chamber is placed 5 measurement sensors (13),
Described measurement sensor is packaged type electret microphone, can move optional position, assess described bilayer in described receiving chamber
The sound insulation property of active sound proof window.
In embodiment, the described step being controlled the error signal after amplifying comprises the following steps:
1, use white noise that the error signal after described amplification is carried out off-line modeling.
2, respectively with 100Hz and 200Hz single frequency sinusoidal ripple for reference signal to 100Hz and 200Hz of error signal after modeling
Line spectrum component is simulated.
Reference signal, as reference signal, is inputted adaptive by noise signal before 3, reference sensor collection is radiated to sound proof window respectively
Answer wave filter and algorithmic controller.Signal sampling rate fs=2000Hz, all wave filter are FIR filter.
4, multichannel Fx-LMS algorithm is used error signal to be carried out Self Adaptive Control, with error by multi-channel active controller
The minimum Controlling object function of acoustical power at sensor.
Fig. 4 is described bilayer active sound proof window sound insulation property curve chart, the sound insulation property of embodiment device under test two states.
State 1: active noise control system is closed；State 2: active noise control system is opened.From test result it will be seen that shape
In the case of state 1, the active sound proof window of bilayer of embodiment insulates against sound when active noise control system is closed, and this device relies on bilayer
Plate glass and cavity air layer isolation incident-noise, the A note power oise insulation factor of sound proof window is 38dB, but below 200Hz low frequency is made an uproar
The oise insulation factor of sound as little as below 25dB, it is impossible to meet sound insulation room demand.When the active sound proof window of the bilayer of embodiment is in state 2
Time, active noise control system unlatching, then the sound insulation room performance of device has pole significantly to promote, and below 200Hz low frequency is made an uproar
The oise insulation factor of sound reaches 48dB more than 45dB, device A note power oise insulation factor, can be for building in 100Hz-4000Hz frequency range
The noise protection performance of the indoor high oise insulation factor of offer is provided.
Claims (9)
- The most double-deck active sound proof window, including the closing cavity surrounded by glass (1), window frame (2), controls sound source (4), with reference to passing The active noise controller that sensor (5), error pick-up (6), peripheral circuit (7) and active controller (8) are constituted. It is characterized in that: glass described in two-layer and described window frame surround closing cavity structure, and high-frequency noises can be effectively isolated by this structure. Described control sound source is embedded in window frame, is placed in outside the corner closing cavity surrounded by double glazing and window frame.Described error Sensor is placed in inside the corner of the closing cavity inside that described double glazing surrounds with described window frame.Described reference sensor is placed in Active sound proof window outer lower side.Described error microphone is for gathering the noise signal entered in described active sound proof window cavity as by mistake Difference signal, described reference sensor noise signal before entering collecting window is as reference signal, error signal and reference signal Being transmitted separately to described peripheral circuit, described peripheral circuit transmits to described active controller after the error signal received being amplified, Described active controller is multi-channel active controller, and described multi-channel active controller is carried out based on error signal and reference signal Multi-channel coupling computing generates control signal, and by described control signal transmission to described peripheral circuit, described peripheral circuit docks The control signal received inputs described control sound source after amplifying, and low-frequency noise is controlled by described control sound source with the control signal received System absorbs.
- The active sound proof window of bilayer the most according to claim 1, it is characterised in that: described glass (1) thickness is 5mm-20mm, Front and back glass described in two-layer and described window frame (2) surround closed cavity, isolate high-frequency noises.
- The active sound proof window of bilayer the most according to claim 2, it is characterised in that: described glass (1) is plate glass, including Ordinary plate glass, safety glass, sand blasting glass, pattern glass, double glazing, doubling glass etc..
- The active sound proof window of bilayer the most according to claim 2, it is characterised in that: described window frame (2) is common door window profile, Including aluminium alloy extrusions, plastic-steel section bar, wooden profile material and aluminium-wood composite section etc..
- The active sound proof window of bilayer the most according to claim 1, it is characterised in that: described control sound source (4) is speaker, institute State control sound source to be embedded in window frame, be placed in outside the corner closing cavity surrounded by described double glazing and described window frame.
- The active sound proof window of bilayer the most according to claim 1, it is characterised in that: described reference sensor (5) is that electret passes Sound device, is placed in described bilayer active sound proof window outer lower side.
- The active sound proof window of bilayer the most according to claim 1, it is characterised in that: described error pick-up (6) is that electret passes Sound device, is placed in inside the corner of the closing cavity inside that described double glazing surrounds with described window frame.
- The active sound proof window of bilayer the most according to claim 1, it is characterised in that: described peripheral circuit (7) includes 4 tunnel errors Signal filtering amplifying circuit, 1 LUSHEN examine signal filtering amplifying circuit, 4 tunnel control signal filter amplification circuit.
- The active sound proof window of bilayer the most according to claim 1, it is characterised in that: described active controller (8) is that multichannel has Source controller, uses multichannel Fx-LMS algorithm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510094309.6A CN105986745A (en) | 2015-03-04 | 2015-03-04 | Double-layer active sound insulation window |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510094309.6A CN105986745A (en) | 2015-03-04 | 2015-03-04 | Double-layer active sound insulation window |
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| CN105986745A true CN105986745A (en) | 2016-10-05 |
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| CN201510094309.6A Pending CN105986745A (en) | 2015-03-04 | 2015-03-04 | Double-layer active sound insulation window |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107608240A (en) * | 2017-08-29 | 2018-01-19 | 苏州麦喆思科电子有限公司 | A kind of method for eliminating night construction noise |
| CN107767855A (en) * | 2017-09-15 | 2018-03-06 | 南京大学 | A kind of active broadband sound arrester for wall ventilation |
| CN108204194A (en) * | 2016-12-16 | 2018-06-26 | 中国船舶工业系统工程研究院 | A kind of active ventilated and soundproof window |
| CN110552605A (en) * | 2019-09-06 | 2019-12-10 | 西安交通大学 | Thermoacoustic intelligent active sound insulation glass system with meteorological monitoring function |
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| CN201620733U (en) * | 2010-03-23 | 2010-11-03 | 李新民 | Window for resisting noise |
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| CN101881119A (en) * | 2010-06-11 | 2010-11-10 | 南京大学 | Active noise-reducing ventilating sound-proof sliding window |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204194A (en) * | 2016-12-16 | 2018-06-26 | 中国船舶工业系统工程研究院 | A kind of active ventilated and soundproof window |
| CN107608240A (en) * | 2017-08-29 | 2018-01-19 | 苏州麦喆思科电子有限公司 | A kind of method for eliminating night construction noise |
| CN107767855A (en) * | 2017-09-15 | 2018-03-06 | 南京大学 | A kind of active broadband sound arrester for wall ventilation |
| CN107767855B (en) * | 2017-09-15 | 2021-12-17 | 南京大学 | Active broadband sound insulation device for wall ventilation |
| CN110552605A (en) * | 2019-09-06 | 2019-12-10 | 西安交通大学 | Thermoacoustic intelligent active sound insulation glass system with meteorological monitoring function |
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Application publication date: 20161005 |