CN109405262A - Pipeline Active noise control system, active-passive composite pipeline silencer - Google Patents

Pipeline Active noise control system, active-passive composite pipeline silencer Download PDF

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Publication number
CN109405262A
CN109405262A CN201811538970.1A CN201811538970A CN109405262A CN 109405262 A CN109405262 A CN 109405262A CN 201811538970 A CN201811538970 A CN 201811538970A CN 109405262 A CN109405262 A CN 109405262A
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CN
China
Prior art keywords
noise
pipeline
controller
signal
microphone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811538970.1A
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Chinese (zh)
Inventor
江旻
王桂波
王勃
黄婉君
张若军
王添
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
No714 Research Institute China Shipbuilding Heavy Industry Group Corp
714th Research Institute of CSIC
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No714 Research Institute China Shipbuilding Heavy Industry Group Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by No714 Research Institute China Shipbuilding Heavy Industry Group Corp filed Critical No714 Research Institute China Shipbuilding Heavy Industry Group Corp
Priority to CN201811538970.1A priority Critical patent/CN109405262A/en
Publication of CN109405262A publication Critical patent/CN109405262A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24Means for preventing or suppressing noise
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24Means for preventing or suppressing noise
    • F24F2013/242Sound-absorbing material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24Means for preventing or suppressing noise
    • F24F2013/247Active noise-suppression

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Exhaust Silencers (AREA)

Abstract

The present disclosure proposes a kind of pipeline Active noise control systems, active-passive composite pipeline silencer, wherein the pipeline Active noise control system includes: with reference to microphone, for obtaining the noise signal of upstream;Controller is connect with described with reference to microphone, for receiving the signal sent with reference to microphone and generating control signal;Sub-loudspeaker, for receiving the control signal of the controller transmission and generating reverse phase secondary noise, so that the noise to downstream pipe controls.Disclosure pipeline Active noise control system, active-passive composite pipeline silencer, low frequency anechoic frequency bandwidth improve noise elimination effect, meet the broad band low frequency requirement of ventilating system pipeline noise.

Description

Pipeline Active noise control system, active-passive composite pipeline silencer
Technical field
The disclosure belongs to the noise elimination technique field of the fields such as building, rail traffic, ship ventilating system pipeline, more particularly to A kind of pipeline Active noise control system, active-passive composite pipeline broadband muffler and piping installation.
Background technique
With the continuous promotion that resident, passenger and crewman pay attention to work, living condition comfort, indoor noise circumstance It is paid close attention to as each side one of an important factor for measuring comfort, is increasingly subject to.
Air-conditioning ventilation system meets inhabitation personnel thermal comfort and health as good indoor air environment is created Important equipment, operating when inevitably bring noise, wherein ventilating system pipeline be most important noise transmission approach it One.Ventilating system pipeline noise is mainly derived from the pneumatic noise in fan noise and pipeline, according to a large amount of field test, Apparent broad band low frequency characteristic is presented.For ventilating system pipeline noise is effectively reduced, installing silencer additional in pipeline is to have the most The method of effect.
Currently used passive silencer or low frequency noise elimination frequency band are narrow, or effectively frequency of noise elimination is excessively high, generally deposits The disadvantages of low frequency noise elimination effect is undesirable, drag losses are big, volume and weight is big, it is difficult to meet ventilating system pipeline noise Broad band low frequency control require.
Summary of the invention
(1) technical problems to be solved
Present disclose provides a kind of pipeline Active noise control system, active-passive composite pipeline broadband muffler and pipeline dresses It sets, at least partly to solve technical problem set forth above.
(2) technical solution
According to one aspect of the disclosure, a kind of pipeline Active noise control system is provided, comprising:
With reference to microphone, for obtaining the noise signal of upstream;
Controller is connect with described with reference to microphone, for receiving the signal sent with reference to microphone and generating control Signal processed;
Sub-loudspeaker, for receiving the control signal of the controller transmission and generating reverse phase secondary noise, thus right The noise of downstream pipe is controlled.
In some embodiments, the controller is using the noise signal of the upstream as reference signal, to the ginseng It examines signal and is filtered the generation control signal.
In some embodiments, the system further include: error microphone is connect, for obtaining with the controller The noise signal of downstream pipe is simultaneously sent to the controller.
In some embodiments, the controller receive the downstream pipe that the error microphone is sent noise signal and The noise signal of the upstream sent with reference to microphone, and according to the noise signal and upstream of the downstream pipe Noise signal correct the control signal.
In some embodiments, the system further includes power amplifier, is connect with the controller and the sub-loudspeaker, The power amplifier receives the control signal that the controller is sent, and sends it to the sub-loudspeaker, drives the secondary Loudspeaker generates the antiphase secondary noise.
A kind of active-passive composite pipeline silencer another aspect of the present disclosure provides, including the pipeline Active noise control system and muffler body;Wherein, the muffler body includes that pipe passage and the cladding pipeline are logical The cavity structure in road.
In some embodiments, the cavity structure include input end chamber, outlet end chamber and be located at input end chamber, Intermediate cavity between the chamber of outlet end;Reference microphone and the controller are installed in the input end chamber, It is equipped with phonon crystal periodicity noise elimination structure and absorbent tampons in the intermediate cavity, is equipped in the outlet end chamber described Sub-loudspeaker and the error microphone.
In some embodiments, the phonon crystal periodicity noise elimination structure includes:
First panel is microperforated panel, coats the pipe passage;
Second panel is oppositely arranged with the first panel;And
Multiple partitions are uniformly arranged between the first panel and second panel.
In some embodiments, the first panel is variable diameter microperforated panel.
According to the another aspect of the disclosure, a kind of piping installation is provided comprising pipeline and the silencer, Described in pipeline be arranged in the pipe passage of the silencer.
(3) beneficial effect
(1) disclosure pipeline Active noise control system includes: and utilizes with reference to microphone, controller and sub-loudspeaker Sub-loudspeaker generates reverse phase secondary noise, can improve low frequency noise elimination effect, the low frequency for meeting ventilating system pipeline noise is wide Band requires.
(2) disclosure pipeline Active noise control system and muffler, structure is simple, is conducive to reduce volume and weight, It is convenient to use.
(3) it is designed using the structure of active-passive composite, wherein passive part introduces phonon crystal technology and resistance noise reduction skill Art is good at by phonon crystal technology in the noise elimination advantage of intermediate frequency and the high frequency noise elimination advantage of resistive technology with active control technology The characteristics of controlling low-frequency noise combines, and forms the ventilating system pipeline acoustical absorptivity of covering Whole frequency band.
(4) wind face is crossed in silencer internal wall, the variable diameter microperforated panel construction small using resistance, pneumatic noise is small, reference Microphone may be arranged at the interior acquisition signal of cavity after microperforated panel, and air-flow must be goed deep by avoiding microphone in traditional technology, easily Incoming flow reference noise can not be accurately measured by turbulent flow interference, the shortcomings that can only using at low wind speeds.
(5) the multi channel adaptive control device for using the feedback mixed structure before digital based on FPGA, can preferably fit Answer the variation of operating condition.
Detailed description of the invention
Fig. 1 is according to disclosure pipeline Active noise control system structural schematic diagram.
Fig. 2 is according to disclosure active-passive composite pipeline broadband muffler structural schematic diagram.
<symbol description>
1- refer to microphone, 2- controller, 3- power amplifier, 4- sub-loudspeaker, 5- error microphone, 6- input end chamber, 7- intermediate cavity, the outlet end 8- chamber, 9- pipe passage, 10- sound absorption cotton, 11- microperforated panel, the common orifice plate of 12-, 13- partition, S1- fan noise, S2- reference signal, S3- control signal.
Specific embodiment
For the purposes, technical schemes and advantages of the disclosure are more clearly understood, below in conjunction with specific embodiment, and reference The disclosure is further described in attached drawing.
The disclosure is mentioned primarily directed to the ventilating system pipeline noise problem of the technical fields such as building, rail traffic, ship Inhibit pipeline Active noise control system, the active-passive composite pipeline broadband muffler of pipeline noise in a kind of wide frequency range out.
Compared with existing pipeline noise impedance, the disclosure uses the structure of active-passive composite, and wherein operand separates Enter phonon crystal technology and resistance noise reduction technology, phonon crystal technology is disappeared in the noise elimination advantage of intermediate frequency and the high frequency of resistive technology Sound advantage combines the characteristics of active control technology is good at control low-frequency noise, and the ventage for forming covering Whole frequency band is under the overall leadership Road acoustical absorptivity.
In one embodiment, as shown in Figure 1, disclosure pipeline Active noise control system includes: with reference to microphone 1, control Device 2, power amplifier 3, sub-loudspeaker 4 and error microphone 5 processed.The initial noisc letter that upstream is picked up with reference to microphone Number, and as reference signal S2 input controller;The controller is filtered generation control letter to the reference signal Number S3, and drive the sub-loudspeaker to issue antiphase secondary noise signal by the power amplifier, to realize to downstream tube Effective control of the noise on road.
The error microphone is used to be monitored pipe line downstream noise, obtains the noise signal of downstream pipe, thus Filter in controller described in offline design or online updating.Specifically, the controller receives the error microphone hair The noise signal (reference signal) of the noise signal of the downstream pipe sent and the upstream sent with reference to microphone, and root The control signal is corrected according to the noise signal of the downstream pipe and the noise signal of upstream.
Controller described in the present embodiment uses the multi channel adaptive control of the feedback mixed structure before digital based on FPGA Device can well adapt to the variation of operating condition, using the regular lowest mean square Active control mode of post filtering, can effectively improve system Convergence rate, stability and noise reduction.
As shown in Fig. 2, disclosure active-passive composite broadband muffler includes the pipeline Active noise control system and disappears Sound device ontology.Wherein, the muffler body includes the cavity structure of pipe passage 9 and the cladding pipe passage.The sky Cavity configuration includes input end chamber 6, positioned at the input end of muffler pipe paths;It is logical to be located at silencer pipeline for outlet end chamber 8 The outlet end in road and the intermediate cavity 7 between input end chamber, outlet end chamber.In muffler body input end chamber It is interior, reference microphone 1 and the controller 2 are installed, phonon crystal periodicity noise elimination structure is equipped in intermediate cavity With absorbent tampons 10, set in the chamber of outlet end there are two sub-loudspeaker 4 and error microphone 5.
The quantity of each component included by silencer is not limited to the quantity limited in embodiment, example in certain disclosure Such as, the quantity of sub-loudspeaker is not limited to two gone out given in embodiment.
The phonon crystal periodicity noise elimination structure includes: microperforated panel 11, coats the pipe passage;Common orifice plate (perforated plate) 12 is oppositely arranged with the microperforated panel;Multiple partitions 13, are uniformly arranged on the microperforated panel and common orifice plate Between;And sound absorption cotton 10, coat the common orifice plate.
Disclosure noise elimination structure is axially in periodic arrangement along pipeline, can form multiple acoustic band gaps, is made an uproar with abundant inhibition Sound.
Preferably, the microperforated panel 11 is variable diameter microperforated panel.Wind face is crossed in silencer internal wall, small using resistance, The small variable diameter microperforated panel of pneumatic noise, makes that noise elimination bandwidth is wider, drag losses are smaller, may be arranged at micropunch with reference to microphone Signal is acquired in cavity after plate, air-flow must be goed deep by avoiding microphone in traditional technology, can not be accurate vulnerable to turbulent flow interference Measuring incoming flow reference noise can be according to use environment spread the technical issues of can only using at low wind speeds.
In addition, the disclosure additionally provides a kind of piping installation comprising pipeline and the silencer, wherein the pipeline It is arranged in the pipe passage of the silencer.Specifically, the piping installation can be the logical of building, rail traffic, ship etc. Air pipe line device.
Noise impedance technology is introduced into the design of ventilating system pipeline silencer by the disclosure, is sent out by secondary sound source Antiphase sound wave out reaches the former noisy purpose of counteracting.
Particular embodiments described above has carried out further in detail the purpose of the disclosure, technical scheme and beneficial effects Describe in detail bright, it should be understood that the foregoing is merely the specific embodiment of the disclosure, be not limited to the disclosure, it is all Within the spirit and principle of the disclosure, any modification, equivalent substitution, improvement and etc. done should be included in the protection of the disclosure Within the scope of.

Claims (10)

1. a kind of pipeline Active noise control system, comprising:
With reference to microphone, for obtaining the noise signal of upstream;
Controller is connect with described with reference to microphone, for receiving the signal sent with reference to microphone and generating control letter Number;
Sub-loudspeaker, for receiving the control signal of the controller transmission and generating reverse phase secondary noise, thus to downstream The noise of pipeline is controlled.
2. system according to claim 1, wherein the controller is using the noise signal of the upstream as reference Signal is filtered the reference signal and generates the control signal.
3. system according to claim 1, further includes: error microphone is connect, for obtaining downstream with the controller The noise signal of pipeline is simultaneously sent to the controller.
4. system according to claim 3, wherein the controller receives the downstream pipe that the error microphone is sent Noise signal and it is described with reference to microphone send upstream noise signal, and according to the noise of the downstream pipe believe Number and the noise signal of upstream correct the control signal.
5. system according to claim 1 further includes power amplifier, it is connect with the controller and the sub-loudspeaker, institute It states power amplifier and receives the control signal that the controller is sent, and send it to the sub-loudspeaker, the secondary is driven to raise Sound device generates the antiphase secondary noise.
6. a kind of active-passive composite pipeline silencer is actively controlled including the pipeline noise as described in any one of claims 1 to 5 System processed and muffler body;Wherein, the muffler body includes the cavity knot of pipe passage and the cladding pipe passage Structure.
7. silencer according to claim 6, wherein the cavity structure include input end chamber, outlet end chamber and Intermediate cavity between input end chamber, outlet end chamber;It is equipped in the input end chamber described with reference to transaudient Device and the controller are equipped with phonon crystal periodicity noise elimination structure and absorbent tampons, in the outlet in the intermediate cavity It holds and is equipped with the sub-loudspeaker and the error microphone in chamber.
8. silencer according to claim 7, wherein the phonon crystal periodicity noise elimination structure includes:
First panel is microperforated panel, coats the pipe passage;
Second panel is oppositely arranged with the first panel;And
Multiple partitions are uniformly arranged between the first panel and second panel.
9. silencer according to claim 8, wherein the first panel is variable diameter microperforated panel.
10. a kind of piping installation comprising pipeline and the silencer as described in any one of claim 6 to 9, wherein the pipe Road is arranged in the pipe passage of the silencer.
CN201811538970.1A 2018-12-14 2018-12-14 Pipeline Active noise control system, active-passive composite pipeline silencer Pending CN109405262A (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110843831A (en) * 2019-11-18 2020-02-28 中科振声(苏州)电子科技有限公司 Distribution box, air conditioner pipe system and air conditioner of making an uproar fall
CN114396523A (en) * 2022-02-24 2022-04-26 中国人民解放军海军工程大学 Silencer for liquid filling pipeline

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2015291A1 (en) * 2007-07-13 2009-01-14 Akustik & Raum AG Acoustic elements
CN104165255A (en) * 2013-05-17 2014-11-26 中国科学院声学研究所 Active-passive composite silencer for ventilation pipeline
CN104875430A (en) * 2015-04-30 2015-09-02 北京空间飞行器总体设计部 Variable aperture micropore honeycomb sandwich structural slab
CN105244014A (en) * 2015-10-13 2016-01-13 哈尔滨工程大学 Integrated active and passive combined silencing apparatus for fluid filled pipe
CN105986746A (en) * 2015-03-03 2016-10-05 苏州静声泰环保科技有限公司 Active and passive combined sound absorption door/window ventilation device
WO2016177203A1 (en) * 2015-08-19 2016-11-10 中兴通讯股份有限公司 Pipeline denoising system and method
CN207513659U (en) * 2017-09-19 2018-06-19 天津市神驰汽车零部件有限公司 A kind of mobile muffler
CN108492816A (en) * 2018-05-31 2018-09-04 山东理工大学 A kind of two-dimentional male-type photonic crystal structure with microperforated panel
CN209763455U (en) * 2018-12-14 2019-12-10 中国船舶重工集团公司第七一四研究所 Pipeline noise active control system, active and passive composite pipeline silencer and pipeline device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2015291A1 (en) * 2007-07-13 2009-01-14 Akustik & Raum AG Acoustic elements
CN104165255A (en) * 2013-05-17 2014-11-26 中国科学院声学研究所 Active-passive composite silencer for ventilation pipeline
CN105986746A (en) * 2015-03-03 2016-10-05 苏州静声泰环保科技有限公司 Active and passive combined sound absorption door/window ventilation device
CN104875430A (en) * 2015-04-30 2015-09-02 北京空间飞行器总体设计部 Variable aperture micropore honeycomb sandwich structural slab
WO2016177203A1 (en) * 2015-08-19 2016-11-10 中兴通讯股份有限公司 Pipeline denoising system and method
CN105244014A (en) * 2015-10-13 2016-01-13 哈尔滨工程大学 Integrated active and passive combined silencing apparatus for fluid filled pipe
CN207513659U (en) * 2017-09-19 2018-06-19 天津市神驰汽车零部件有限公司 A kind of mobile muffler
CN108492816A (en) * 2018-05-31 2018-09-04 山东理工大学 A kind of two-dimentional male-type photonic crystal structure with microperforated panel
CN209763455U (en) * 2018-12-14 2019-12-10 中国船舶重工集团公司第七一四研究所 Pipeline noise active control system, active and passive composite pipeline silencer and pipeline device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110843831A (en) * 2019-11-18 2020-02-28 中科振声(苏州)电子科技有限公司 Distribution box, air conditioner pipe system and air conditioner of making an uproar fall
WO2021098331A1 (en) * 2019-11-18 2021-05-27 中科振声(苏州)电子科技有限公司 Noise reduction distribution box, air conditioner pipeline system and air conditioner
CN114396523A (en) * 2022-02-24 2022-04-26 中国人民解放军海军工程大学 Silencer for liquid filling pipeline
CN114396523B (en) * 2022-02-24 2024-05-03 中国人民解放军海军工程大学 Active and passive composite muffler for liquid filling pipeline

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