CN109658915B - A kind of noise-reduction method of central air-conditioning, denoising device and central air-conditioning - Google Patents
A kind of noise-reduction method of central air-conditioning, denoising device and central air-conditioning Download PDFInfo
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- CN109658915B CN109658915B CN201910175428.2A CN201910175428A CN109658915B CN 109658915 B CN109658915 B CN 109658915B CN 201910175428 A CN201910175428 A CN 201910175428A CN 109658915 B CN109658915 B CN 109658915B
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
- G10K11/17879—General system configurations using both a reference signal and an error signal
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
- G10K11/17821—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
- G10K11/17823—Reference signals, e.g. ambient acoustic environment
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
- G10K11/17821—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
- G10K11/17825—Error signals
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/109—Compressors, e.g. fans
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Abstract
The invention discloses a kind of noise-reduction method of central air-conditioning, denoising device and central air-conditioning, are related to noise reduction technology field, for reducing noise reduction cost and enhancing noise reduction effect.The noise-reduction method includes: that noise reduction controller receives the reference noise signal that the reference noise sensor in target level noise reduction module is acquired and sent, and receives the error noise signal that the error noise sensor in the target level noise reduction module is acquired and sent；Wherein, the target level noise reduction module is any level noise reduction module at least in two-stage noise reduction module；The noise reduction controller handles the reference noise signal of the target level noise reduction module and corresponding error noise signal, to obtain the corresponding target level de-noising signal of the target level noise reduction module；The noise reduction controller controls the loudspeaker output noise reduction sound in this grade of noise reduction module, according to the target level de-noising signal to cancel out each other with noise to be canceled.
Description
Technical field
The present invention relates to noise reduction technology field more particularly to a kind of noise-reduction methods of central air-conditioning, denoising device and center
Air-conditioning.
Background technique
With the development of technology and the improvement of people ' s living standards, problem of noise pollution becomes increasingly conspicuous, and noise pollution is serious
Influence the physical and mental health of people.Noise in the ventilation shaft of central air-conditioning is one of Main Noise Sources of indoor environment, due to this
The frequency of noise is lower, is difficult to inhibit by changing the engineerings means such as ventilation duct structure, and existing in mode is in ventilation duct
Denoising device is set at each air outlet in road, and this noise reduction mode not only higher cost can also be indoor other because collecting
Noise makes the noise reduction effect of denoising device unstable, influences the noise reduction effect to noise in ventilation shaft, therefore, how to save
Preferably it is one to the lower noise progress noise reduction of frequency in central air-conditioning while cost and needs the problem of thinking deeply.
Summary of the invention
The embodiment of the invention provides a kind of noise-reduction method of central air-conditioning, denoising device and central air-conditioning, for reducing
Noise reduction cost in the prior art and enhancing noise reduction effect.
In a first aspect, providing a kind of noise-reduction method of central air-conditioning, it is applied to denoising device, the denoising device setting exists
In the main ventilation pipeline of the central air-conditioning, the denoising device includes at least two-stage noise reduction module and noise reduction controller, and every grade
Noise reduction module includes reference noise sensor, error noise sensor and loudspeaker, and the loudspeaker of every grade of noise reduction module is set
Set between the reference noise sensor and error noise sensor of this grade of noise reduction module, in adjacent two-stage noise reduction module before
The error noise sensor of level-one noise reduction module is the reference noise sensor in rear stage noise reduction module, at least two-stage drop
Module of making an uproar and the noise reduction controller are arranged at before the air outlet of main ventilation pipeline of central air-conditioning；The described method includes:
The reference noise sensor that the noise reduction controller receives in target level noise reduction module acquires and the reference sent is made an uproar
Acoustical signal, and receive the error noise signal that the error noise sensor in the target level noise reduction module is acquired and sent；
Wherein, the target level noise reduction module is any level noise reduction module in at least two-stage noise reduction module；
Reference noise signal and corresponding error noise signal of the noise reduction controller to the target level noise reduction module
It is handled, to obtain the corresponding target level de-noising signal of the target level noise reduction module；
The noise reduction controller controls the loudspeaker in the target level noise reduction module according to the target level de-noising signal
Noise reduction sound is exported, to cancel out each other with noise to be canceled, wherein the noise to be canceled is the target level noise reduction module
Noise reduction module before carries out the noise after noise reduction to the noise source of the air inlet of the main ventilation pipeline.
Optionally, the noise reduction controller determines the wind speed of the central air-conditioning, wherein the wind speed of the central air-conditioning is not
It is different with the noise sound intensity for showing the noise source；
According to the determining corresponding noise sound intensity of wind speed, the series for needing the noise reduction module run is determined；
The noise reduction module of the series, and the noise reduction module fortune of control selections are selected from at least two-stage noise reduction module
Row.
Optionally, the noise reduction module of the series is selected from at least two-stage noise reduction module, comprising:
From at least two-stage noise reduction module, according to being gradually distance from the direction selection of the noise source successively adjacent institute
State the noise reduction module of series.
Second aspect provides a kind of denoising device of central air-conditioning, comprising:
At least two-stage noise reduction module and noise reduction controller, wherein every grade of noise reduction module includes reference noise sensor, misses
The reference noise sensor of this grade of noise reduction module is arranged in poor noise transducer and loudspeaker, the loudspeaker of every grade of noise reduction module
Between error noise sensor, after the error noise sensor of the previous stage noise reduction module in adjacent two-stage noise reduction module is
Reference noise sensor in level-one noise reduction module；At least two-stage noise reduction module and the noise reduction controller are arranged at institute
Before the air outlet of main ventilation pipeline for stating central air-conditioning；Wherein:
Reference noise sensor in every grade of noise reduction module is for acquiring reference noise signal；
Error noise sensor in every grade of noise reduction module is used for Acquisition Error noise signal；
The noise reduction controller, for receiving the reference noise letter of the transmission of the reference noise sensor in every grade of noise reduction module
Number and error noise sensor send error noise signal；Reference noise signal and corresponding mistake to every grade of noise reduction module
Poor noise signal is handled, to obtain the corresponding de-noising signal of every grade of noise reduction module；And the drop according to every grade of noise reduction module
Noise cancellation signal controls the loudspeaker output noise reduction sound in this grade of noise reduction module, to cancel out each other with noise to be canceled, wherein
The noise source of the air inlet of the main ventilation pipeline drops in the noise reduction module before noise to be canceled is this grade of noise reduction module
Noise after making an uproar.
Optionally, the reference noise sensor setting of the first order noise reduction module in at least two-stage noise reduction module is being leaned on
The position of the air inlet of the nearly main ventilation pipeline.
Optionally, it is logical to be arranged at the master for the reference noise sensor in every grade of noise reduction module and error noise sensor
In the hollow region of air piping.
Optionally, the loudspeaker in every grade of noise reduction module is arranged at the outer wall of the main ventilation pipeline.
Optionally, it is arranged on the outer wall of the main ventilation pipeline at the position of loudspeaker and offers through-hole, so that described raises
In the sound dispersion to the main ventilation pipeline of sound device output.
Optionally, the reference noise sensor in every grade of noise reduction module and error noise sensor are arranged at the sound intensity and are less than
Corresponding position at equal to 1/10th of the loudspeaker position sound intensity in this grade of noise reduction module, wherein every grade of noise reduction mould
The position of reference noise sensor and error noise sensor in block is not identical.
The third aspect provides a kind of central air-conditioning, includes in main ventilation pipeline and such as second aspect in the central air-conditioning
Any denoising device.
In embodiments of the present invention, the master of the centrally disposed air-conditioning of denoising device including multistage noise reduction module can be led to
In air piping, in this way, multistage noise reduction mould can be passed through when the noise in the ventilation shaft to central air-conditioning carries out noise reduction process
Serial noise reduction between block can be improved with realizing the noise reduction to central air-conditioning by the joint noise reduction mode of multistage noise reduction module
Noise reduction efficacy.Further, simultaneously due to the error noise sensing of previous stage noise reduction module in adjacent two-stage noise reduction module
It is the reference noise sensor in rear stage noise reduction module, i.e., adjacent two-stage noise reduction module can share a noise transducer,
To reduce the usage quantity of noise transducer, noise reduction cost is reduced, and adjacent two-stage noise reduction module shares one and makes an uproar
Sonic transducer can make loudspeaker and noise transducer uniformly be disposed alternately in the ventilation shaft of central air-conditioning, so,
Noise reduction effect can also be enhanced.
In noise reduction process, by taking wherein level-one noise reduction module (such as being referred to as target level noise reduction module) as an example, denoising device
Noise reduction controller can receive the reference noise signal that the reference noise sensor in target level noise reduction module is acquired and sent,
And the error noise sensor received in target level noise reduction module acquires and sends error noise signal, and then to received ginseng
It examines noise signal and error noise signal is handled, to obtain the corresponding target level de-noising signal of target level noise reduction module, so
Noise reduction sound is exported further according to the loudspeaker in target level de-noising signal control target level noise reduction module afterwards, to make an uproar with to be canceled
Sound is cancelled out each other, and the noise to be canceled is all noise reduction modules before target level noise reduction module to the air inlet of main ventilation pipeline
The noise source of mouth carries out the noise after noise reduction.So denoising device is arranged in the main ventilation pipeline of central air-conditioning can be realized
It to the noise reduction process of noise in ventilation shaft, does not need that denoising device is arranged in each air outlet, so as to reduce drop
It makes an uproar the quantity of device, saves noise reduction cost, simultaneously because denoising device is arranged in ventilation shaft, it in this way can be to avoid acquisition
Other noises of the sound of such as people in open space improve noise reduction efficacy so can also enhance noise reduction effect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, embodiment will be described below
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment.
Fig. 1 is a kind of structural schematic diagram of the denoising device of central air-conditioning provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart of the noise-reduction method of central air-conditioning provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution of the present invention is clearly and completely described, it is clear that described embodiment is skill of the present invention
A part of the embodiment of art scheme, instead of all the embodiments.Based on the embodiment recorded in present specification, this field is general
Logical technical staff every other embodiment obtained without creative efforts, belongs to the technology of the present invention side
The range of case protection.
Term " first " and " second " in description and claims of this specification and above-mentioned attached drawing are for distinguishing
Different objects, not for description particular order.In addition, term " includes " and their any deformations, it is intended that covering is not
Exclusive protection.Such as it contains the process, method, system, product or equipment of a series of steps or units and is not limited to
The step of listing or unit, but optionally further comprising the step of not listing or unit, or optionally further comprising for these
The intrinsic other step or units of process, method, product or equipment.
In the embodiment of the present invention, " multiple " can indicate at least two, for example, can be two, three or more,
The embodiment of the present application is with no restrictions.
In the prior art, as described above, the air inlet of the ventilation shaft of central air-conditioning can generate biggish noise, be formed
Noise pollution influences the physical and mental health of people, and existing noise-reduction method is not obvious the inhibiting effect of noise, in ventilation shaft
Each air outlet set denoising device not only higher cost, the drop of denoising device can be also made because collecting other indoor noises
Effect of making an uproar is unstable, influences the noise reduction effect to noise in ventilation shaft, so, existing noise reduction is at high cost, noise reduction effect not
Stablize.
In consideration of it, providing a kind of noise reduction schemes of central air-conditioning, in this scenario, denoising device in the embodiment of the present invention
It may include multistage noise reduction module, in the main ventilation pipeline of the centrally disposed air-conditioning of denoising device, the position before air outlet
It sets, and the error noise sensor of previous stage noise reduction module is also rear stage noise reduction mould simultaneously in adjacent two-stage noise reduction module
Reference noise sensor in block, so, influence of other noises to noise reduction effect in free environments is not only avoided, is enhanced
Noise reduction effect improves noise reduction efficacy, also reduces the usage quantity of denoising device and noise transducer, save noise reduction at
This.
Technical solution provided in an embodiment of the present invention is introduced with reference to the accompanying drawings of the specification.
The embodiment of the invention provides a kind of denoising devices of central air-conditioning, to simplify the description, in description later
The denoising device of central air-conditioning is referred to as denoising device.Denoising device in the embodiment of the present invention includes at least two-stage noise reduction mould
Block and noise reduction controller all include reference noise sensor, error noise sensor and loudspeaker, drop in every grade of noise reduction module
Controller of making an uproar is attached with reference noise sensing, error noise sensing and the loudspeaker in every grade of noise reduction module by conducting wire.
Noise reduction controller can control the ginseng in the main ventilation pipeline of the reference noise sensing acquisition central air-conditioning in every grade of noise reduction module
Noise signal is examined, controls the error noise signal in the main ventilation pipeline of error noise sensing acquisition central air-conditioning, and to acquisition
Reference noise signal and error noise signal handled, to obtain de-noising signal, and then can control loudspeaker according to drop
Noise cancellation signal exports noise reduction sound.
It in the embodiment of the present invention for convenience of explanation, include two-stage noise reduction module with denoising device, and during noise source is located at
It is illustrated for entreating on the left of the main ventilation pipeline of air-conditioning, shown in Figure 1, which includes noise reduction controller
10, first order noise reduction module 11 and second level noise reduction module 12, that is, in Fig. 1, the dotted rectangle on the left side indicates first order drop
Module of making an uproar 11 and the dotted rectangle on the right indicate second level noise reduction module 12.First order noise reduction module 11 includes reference
Noise transducer 111, error noise sensor 112 and loudspeaker 113, loudspeaker 113 are arranged in 111 He of reference noise sensor
Between error noise sensor 112；Second level noise reduction module 12 includes reference noise sensor 121, error noise sensor 122
With loudspeaker 123, loudspeaker 123 is also disposed between reference noise sensor 121 and error noise sensor 122.Namely
It says, every grade of noise reduction module in denoising device includes reference noise sensor, error noise sensor and loudspeaker, and every grade
The loudspeaker of noise reduction module is respectively provided with the position between the reference noise sensor of every grade of noise reduction module and error noise sensor,
So loudspeaker can be set in the central location of every grade of noise reduction module, and then every grade of noise reduction module corresponding region can be made
Interior noise reduction effect is more preferable.
Wherein, the reference in the error noise sensor 112 and second level noise reduction module in first order noise reduction module 11 is made an uproar
Sonic transducer 121 is the same noise transducer, that is to say, that can share a noise between adjacent two-stage noise reduction module and pass
Sensor can reduce the usage quantity of noise transducer in this way, and then can save noise reduction cost, and since adjacent two-stage drops
A noise transducer is shared between module of making an uproar, it is possible to the noise transducer and loudspeaker being arranged alternately in denoising device,
So that it is evenly distributed, so can also enhance the noise reduction effect of denoising device.
In embodiments of the present invention, the reference noise sensor 111 in first order noise reduction module 11, error noise sensor
112 and the reference noise sensor 121 in loudspeaker 113 and second level noise reduction module 12,122 and of error noise sensor
Loudspeaker 123 can be electrically connected by conducting wire with noise reduction controller 10.And noise reduction controller 10,11 and of first order noise reduction module
Second level noise reduction module 12 is arranged at before the air outlet of main ventilation pipeline of central air-conditioning, i.e., denoising device includes at least
Two-stage noise reduction module and noise reduction controller be all the air outlet of the main ventilation pipeline of centrally disposed air-conditioning before position, institute
With, it does not need that a denoising device is arranged in each air outlet of main ventilation pipeline, reduces the usage quantity of denoising device, into
And noise reduction cost can be saved.
In embodiments of the present invention, the reference noise sensor 111 of first order noise reduction module 11 is positioned close to central hollow
The position of the main ventilation pipeline air inlet of tune, i.e., close to the position of noise source, with acquisition ventilation shaft accurate and effective as far as possible into
The raw noise that air port generates guarantees noise reduction effect.
In embodiments of the present invention, it in the ventilation process of ventilation shaft, can be produced with duct wall close to gas at duct wall
Raw friction, if noise transducer to be arranged in the inner wall of ventilation shaft, may have an impact the noise signal of acquisition, institute
Reference noise sensor 111, error noise to be passed in the embodiment of the present invention in order to enable the noise signal of acquisition is more acurrate
Sensor 112, reference noise sensor 121 and error noise sensor 122 are arranged in the main ventilation pipeline of central air-conditioning
Hollow region, for example, it is assumed that main ventilation pipeline is cylindrical pipe, the hollow area between its main inner wall of the pipe can understand
It is not specific herein which position that hollow region is set limited for the hollow region for being main ventilation pipeline, as long as can be just
Noise signal in acquisition main ventilation pipeline, for example, the centre bit of ventilation shaft can be disposed at by bracket
It sets, or the position apart from main ventilation pipeline lower wall one third distance is set.
In embodiments of the present invention, since loudspeaker itself can have certain volume, such as the loudspeaker of horn shape, such as
Loudspeaker is arranged in main ventilation pipeline fruit, can occupy the certain space of main ventilation pipeline, and then influence main ventilation pipeline
Interior ventilation effect, furthermore, such as influence in its noise diffusion direction of horn-like loudspeaker and range meeting cone direction, so
During noise reduction, diffuser direction noise reduction effect is more obvious than speaker bottom noise reduction effect, so, in order to avoid
Loudspeaker influences the ventilation effect of main ventilation pipeline and makes noise reduction effect more evenly, by the loudspeaker in the embodiment of the present invention
113 and loudspeaker 123 be arranged central air-conditioning main ventilation pipeline outer wall, i.e., the loudspeaker in every grade of noise reduction module is respectively provided with
In the outer wall of main ventilation pipeline.And offer through-hole at the position of loudspeaker 113 and the corresponding tube wall of loudspeaker 123, i.e., it is main logical
It is arranged at the position of loudspeaker on the outer wall of air piping and offers through-hole, it, can be by noise reduction modules at different levels by the through-hole opened up
In the noise reduction sound of loudspeaker (such as loudspeaker 113 and loudspeaker 123) output diffuse in main ventilation pipeline through through-hole,
To realize the noise reduction to noise in the entire ventilation shaft of central air-conditioning for inhibiting the noise in main ventilation pipeline.
In embodiments of the present invention, if noise transducer is excessively close with loudspeaker distance, when loudspeaker issues noise reduction sound
When, noise transducer can not only collect the noise in main ventilation pipeline, the noise reduction sound of loudspeaker sending can be also collected,
If the sound that excessive collected loudspeaker issues, noise transducer will affect to the testing result of noise, and then influence
Denoising device noise reduction effect.So the noise reduction sound affecting parameters noise transducer of loudspeaker output and error are made an uproar in order to prevent
Sonic transducer acquires noise to be canceled in central air-conditioning main ventilation pipeline, influences noise reduction effect, senses in setting reference noise
When the position of device, error noise sensor and loudspeaker, loudspeaker should be arranged to noise transducer and reference noise as far as possible
In the lesser position range of the influence of sensor.Specifically, loudspeaker to be placed on to the fixation before the air outlet in ventilation shaft
Position, control loudspeaker issue the sound of the fixed sound intensity, and the sound intensity is collected in main ventilation pipeline less than or equal to the fixation sound intensity
1/10th at corresponding position reference noise sensor and error noise are sensed respectively and along main ventilation pipeline rout
The two sides of loudspeaker are arranged in device, wherein in every grade of noise reduction module, the setting of reference noise sensor is located proximate to noise source
Side, reference noise sensor can be identical at a distance from loudspeaker with error noise sensor at a distance from loudspeaker, can also
With not identical.
For example, with reference noise sensor 111, error noise sensor 112 and loudspeaker in first order noise reduction module 11
For 113 position setting, loudspeaker 113 is placed on the position of range noise source certain distance, and (noise source is not opened also at this time
Begin to generate noise), control loudspeaker 113 issues the sound of 50dB, and detection is less than 2 of 5dB along the main ventilation pipeline rout sound intensity
The left side of loudspeaker 113 is arranged in reference noise sensor 111 by position, and error noise sensor 112 is arranged in loudspeaker
113 right side.
In embodiments of the present invention, reference noise sensor 111 and reference noise sensor 121 are all made an uproar for acquiring reference
Acoustical signal, the reference noise signal that reference noise sensor 111 acquires are the noise letter at the noise source of central air-conditioning air inlet
Number, the reference noise signal that reference noise sensor 121 acquires is the main ventilation where it after 11 noise reduction of previous stage noise reduction module
The noise signal of corresponding position in pipeline.
In embodiments of the present invention, noise reduction controller 10 is used to control the reference noise sensor of first order noise reduction module 11
111 and error noise sensor 112, second level noise reduction module 12 reference noise sensor 121 and error noise sensor
122, the noise signal in central air-conditioning main ventilation pipeline is acquired, and receive and handle the noise signal of the acquisition, obtains first
The grade first order de-noising signal of noise reduction module 11 and the second level de-noising signal of second level noise reduction module 12；Then, according to obtaining
The corresponding noise reduction of the first order de-noising signal control output of loudspeaker 113 noise to be canceled corresponding with first order noise reduction module 11
Sound, so that noise to be canceled corresponding with first order noise reduction module 11 is cancelled out each other, according to obtained second level de-noising signal
The corresponding noise reduction sound of the output of loudspeaker 123 noise to be canceled corresponding with second level noise reduction module 12 is controlled, so as to second
The corresponding noise to be canceled of grade noise reduction module 12 is cancelled out each other, to realize to noise in the entire ventilation shaft of central air-conditioning
Noise reduction process.
Based on the same inventive concept, the present invention implementation additionally provide a kind of noise-reduction method of central air-conditioning, continue herein with
Noise reduction module is two-stage, i.e., be illustrated for two-stage noise reduction process to the noise in central air-conditioning main ventilation pipeline, such as
Shown in Fig. 2, this method comprises:
Step 201: noise reduction controller receives the ginseng that the reference noise sensor in target level noise reduction module is acquired and sent
Noise signal is examined, and receives the error noise signal that the error noise sensor in target level noise reduction module is acquired and sent；
Wherein, target level noise reduction module is any level noise reduction module at least in two-stage noise reduction module.
In embodiments of the present invention, it describes for convenience, continues to be illustrated by two-stage of noise reduction module herein.
In embodiments of the present invention, target level noise reduction module can any level noise reduction mould at least in two-stage noise reduction module
Block, for example, it may be first order noise reduction module 11 shown in Fig. 1, is also possible to second level noise reduction module 12, noise reduction controller
To be noise reduction controller 10 as shown in Figure 1.Here, suppose that target level noise reduction module is first order noise reduction module 11, so,
Reference noise sensing 111 can acquire reference noise signal, error noise sensor 112 can with Acquisition Error noise signal, and
The reference noise signal of acquisition and error noise signal are sent to noise reduction controller 10.
Step 202: reference noise signal and corresponding error noise signal of the noise reduction controller to target level noise reduction module
It is handled, to obtain the corresponding target level de-noising signal of target level noise reduction module.
In embodiments of the present invention, noise reduction controller 10 receives the reference noise signal and error of target level noise reduction module
After noise signal, the reference noise signal and error noise signal that receive are handled based on adaptive filter algorithm, with
Obtain the corresponding target level de-noising signal of the target level noise reduction module.Wherein, adaptive filter algorithm include adaptive algorithm and
Filter, the weight coefficient of filter have adaptive algorithm to adjust.Specifically, the reference noise that reference noise sensor is acquired
Signal is filtered to obtain filtered reference noise signal through filter, then by the reference noise signal after filtering processing
Adaptive algorithm processing is carried out with the error noise signal of acquisition, to obtain final target level de-noising signal, so that it is adaptive
It answers the corresponding module of algorithm that can calculate the filter weight coefficient calculated next time and is transmitted to filter, to be acquired to next time
Reference signal be filtered.
Step 203: noise reduction controller controls the loudspeaker output in target level noise reduction module according to target level de-noising signal
Noise reduction sound, to cancel out each other with noise to be canceled, wherein noise to be canceled is the noise reduction mould before target level noise reduction module
Block carries out the noise after noise reduction to the noise source of the air inlet of main ventilation pipeline.
In embodiments of the present invention, after obtaining target level de-noising signal, noise reduction controller can be believed according to target level noise reduction
Number, the loudspeaker controlled in target level noise reduction module exports the noise reduction sound for offsetting noise to be canceled, the noise reduction sound
The sound intensity is identical as the sound intensity of noise to be canceled, to cancel out each other with noise to be canceled, to realize to noise in ventilation shaft
Noise reduction process, inhibit ventilation shaft in noise.
As an alternative embodiment, in embodiments of the present invention, the wind speed of central air-conditioning is different, main ventilation pipeline
The interior sound intensity for generating noise is not also identical, and carries out noise reduction to the noise of the different sound intensitys, needs the grade of noise reduction module to be used
Number is not also identical, so, central air-conditioning wind speed can be preset, the sound intensity and noise reduction module in central air-conditioning main ventilation pipeline
The mapping table of series in turn can sound according to the wind speed of central air-conditioning, out of central air conditioner wind speed, main ventilation pipeline
In the strong and mapping table of noise reduction module series, the noise sound intensity corresponding with current wind speed is determined, and then determine to need
The series of noise reduction module to be used.So, after the series for determining to need noise reduction module to be used, can from setting to
The noise reduction module of corresponding series is selected in few two-stage noise reduction module, and controls the noise reduction module operation of the corresponding series, to main logical
Noise in air piping carries out noise reduction process.Since the embodiment of the present invention can be according to the noise sound intensity of main ventilation pipeline come rationally
Select noise reduction module uses series, so also playing the work for saving noise reduction cost while obtaining preferable noise reduction effect
With again the noise reduction module for enabling final operation to be used to noise reduction carries out noise reduction to the full extent to noise as far as possible, while may be used
To reduce the invalid operation of noise reduction module to the greatest extent, the wasting of resources is avoided, reduces equipment power dissipation.
In embodiments of the present invention, the noise sound intensity can natural wastage during as wind flows in main ventilation pipeline
The noise signal of a part, the noise signal and noise source that acquire close to the sensor of noise source is closer, drops obtained from
Noise cancellation signal is also more accurate.Further, more due to the setting position of noise transducer between adjacent noise reduction module and loudspeaker
Add uniformly, be not in it is as close apart from loudspeaker such as reference noise, error noise sensor distance loudspeaker farther out the case where, drop
Effect of making an uproar is more stable.So in order to enable noise reduction effect is more preferable, it, can after the series for determining to need noise reduction module to be used
With according to range noise source from the noise reduction module for closely selecting adjacent corresponding series to remote mode.
So in embodiments of the present invention, the denoising device including multistage noise reduction module can be set by the above method
It sets in the main ventilation pipeline of central air-conditioning, in this way, when the noise in the ventilation shaft to central air-conditioning carries out noise reduction process,
The connection of multistage noise reduction module can be passed through by the serial noise reduction between multistage noise reduction module to realize the noise reduction to central air-conditioning
Closing noise reduction mode can be improved noise reduction efficacy.Further, due to previous stage noise reduction module in adjacent two-stage noise reduction module
Error noise senses while being also the reference noise sensor in rear stage noise reduction module, i.e., adjacent two-stage noise reduction module can be total to
Noise reduction cost, and adjacent two-stage drop are reduced to reduce the usage quantity of noise transducer with a noise transducer
Module of making an uproar shares a noise transducer, and loudspeaker and noise transducer can be made uniformly to be disposed alternately at central air-conditioning
In ventilation shaft, so, noise reduction effect can also be enhanced.
Specifically, can be with wherein level-one noise reduction module (such as being referred to as target level noise reduction module) in noise reduction process
Example, the noise reduction controller of denoising device can receive the ginseng that the reference noise sensor in target level noise reduction module is acquired and sent
Noise signal is examined, and the error noise sensor received in target level noise reduction module acquires and send error noise signal, into
And received reference noise signal and error noise signal are handled, to obtain the corresponding target level of target level noise reduction module
Then de-noising signal exports noise reduction sound further according to the loudspeaker in target level de-noising signal control target level noise reduction module, with
Just it cancels out each other with noise to be canceled, and all noise reduction modules before the noise to be canceled is target level noise reduction module are led to main
The noise source of the air inlet of air piping carries out the noise after noise reduction.So noise reduction is arranged in the main ventilation pipeline of central air-conditioning
The noise reduction process to noise in ventilation shaft can be realized in device, does not need that denoising device is arranged in each air outlet, from
And the quantity of denoising device can be reduced, noise reduction cost is saved, simultaneously because denoising device is arranged in ventilation shaft, in this way
, so noise reduction effect can also be enhanced, noise reduction can be improved to avoid other noises of the sound of such as people in open space are collected
Efficiency.
Based on the same inventive concept, a kind of central air-conditioning is provided in the embodiment of the present invention, includes master in the central air-conditioning
Ventilation shaft and denoising device as stated above, such as denoising device shown in Fig. 1, the denoising device are centrally disposed
In the ventilation shaft of air-conditioning, and the denoising device includes at least two-stage noise reduction module and noise reduction controller；Wherein, every grade of noise reduction mould
Block includes reference noise sensor, error noise sensor and loudspeaker, and the loudspeaker of every grade of noise reduction module is arranged at this
Previous stage drop between the reference noise sensor and error noise sensor of grade noise reduction module, in adjacent two-stage noise reduction module
The error noise sensor for module of making an uproar is the reference noise sensor in rear stage noise reduction module, every grade of noise reduction module and noise reduction control
Device processed is arranged at before the air outlet of main ventilation pipeline of central air-conditioning.
In embodiments of the present invention, the reference noise sensor in every grade of noise reduction module is used to acquire reference noise signal,
Error noise sensor in every grade of noise reduction module is used for Acquisition Error noise signal, noise reduction controller, for receiving every grade of drop
The error noise letter that the reference noise signal and error noise sensor that reference noise sensor in module of making an uproar is sent are sent
Number；The reference noise signal and corresponding error noise signal of every grade of noise reduction module are handled, to obtain every grade of noise reduction mould
The corresponding de-noising signal of block；And the de-noising signal according to every grade of noise reduction module, the loudspeaker controlled in this grade of noise reduction module are defeated
Noise reduction sound out, to cancel out each other with noise to be canceled, wherein noise to be canceled is the noise reduction mould before every grade of noise reduction module
Block carries out the noise after noise reduction to the noise source of the air inlet of main ventilation pipeline.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The shape for the computer program product implemented in usable storage medium (including but not limited to magnetic disk storage and optical memory etc.)
Formula.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of noise-reduction method of central air-conditioning is applied to denoising device, which is characterized in that the denoising device is arranged described
In the main ventilation pipeline of central air-conditioning, the denoising device includes at least two-stage noise reduction module and noise reduction controller, every grade of noise reduction
Module includes reference noise sensor, error noise sensor and loudspeaker, and the loudspeaker setting of every grade of noise reduction module exists
Previous stage between the reference noise sensor and error noise sensor of this grade of noise reduction module, in adjacent two-stage noise reduction module
The error noise sensor of noise reduction module is the reference noise sensor in rear stage noise reduction module, at least two-stage noise reduction mould
Block and the noise reduction controller are arranged at before the air outlet of main ventilation pipeline of central air-conditioning；The described method includes:
The reference noise letter that the reference noise sensor that the noise reduction controller receives in target level noise reduction module is acquired and sent
Number, and receive the error noise signal that the error noise sensor in the target level noise reduction module is acquired and sent；Wherein,
The target level noise reduction module is any level noise reduction module in at least two-stage noise reduction module；
The noise reduction controller carries out the reference noise signal of the target level noise reduction module and corresponding error noise signal
Processing, to obtain the corresponding target level de-noising signal of the target level noise reduction module；
The noise reduction controller controls the loudspeaker output in the target level noise reduction module according to the target level de-noising signal
Noise reduction sound, to cancel out each other with noise to be canceled, wherein when target level noise reduction module is first order noise reduction module, to
Noise caused by the noise source for the air inlet that noise is the main ventilation pipeline is eliminated, when the target level noise reduction module is the
When noise reduction module except level-one noise reduction module, noise to be canceled is the noise reduction module before the target level noise reduction module to institute
The noise source for stating the air inlet of main ventilation pipeline carries out the noise after noise reduction.
2. the method as described in claim 1, which is characterized in that the method also includes:
The noise reduction controller determines the wind speed of the central air-conditioning, wherein the wind speed difference of the central air-conditioning shows described
The noise sound intensity of noise source is different；
According to the determining corresponding noise sound intensity of wind speed, the series for needing the noise reduction module run is determined；
The noise reduction module of the series, and the noise reduction module operation of control selections are selected from at least two-stage noise reduction module.
3. method according to claim 2, which is characterized in that select the series from at least two-stage noise reduction module
Noise reduction module, comprising:
From at least two-stage noise reduction module, according to being gradually distance from the direction selection of the noise source successively adjacent grade
Several noise reduction modules.
4. a kind of denoising device of central air-conditioning characterized by comprising at least two-stage noise reduction module and noise reduction controller,
In, every grade of noise reduction module includes reference noise sensor, error noise sensor and loudspeaker, and every grade of noise reduction module is raised
Sound device is arranged between the reference noise sensor of this grade of noise reduction module and error noise sensor, adjacent two-stage noise reduction module
In previous stage noise reduction module error noise sensor be rear stage noise reduction module in reference noise sensor；It is described at least
Two-stage noise reduction module and the noise reduction controller are arranged at before the air outlet of main ventilation pipeline of central air-conditioning；Wherein:
Reference noise sensor in every grade of noise reduction module is for acquiring reference noise signal；
Error noise sensor in every grade of noise reduction module is used for Acquisition Error noise signal；
The noise reduction controller, for receive the reference noise sensor in every grade of noise reduction module transmission reference noise signal with
And the error noise signal that error noise sensor is sent；It makes an uproar to the reference noise signal and corresponding error of every grade of noise reduction module
Acoustical signal is handled, to obtain the corresponding de-noising signal of every grade of noise reduction module；And believed according to the noise reduction of every grade of noise reduction module
Number, the loudspeaker output noise reduction sound in this grade of noise reduction module is controlled, to cancel out each other with noise to be canceled, wherein when this
When grade noise reduction module is first order noise reduction module, noise to be canceled is produced by the noise source of the air inlet of the main ventilation pipeline
Noise, when this grade of noise reduction module be first order noise reduction module except noise reduction module when, noise to be canceled be this grade of noise reduction mould
Noise reduction module before block carries out the noise after noise reduction to the noise source of the air inlet of the main ventilation pipeline.
5. denoising device as claimed in claim 4, which is characterized in that the first order noise reduction in at least two-stage noise reduction module
The reference noise sensor of module is positioned close to the position of the air inlet of the main ventilation pipeline.
6. denoising device as claimed in claim 4, which is characterized in that reference noise sensor and mistake in every grade of noise reduction module
Poor noise transducer is arranged in the hollow region of the main ventilation pipeline.
7. denoising device as claimed in claim 4, which is characterized in that the loudspeaker in every grade of noise reduction module is arranged at described
The outer wall of main ventilation pipeline.
8. denoising device as claimed in claim 7, which is characterized in that loudspeaker is arranged on the outer wall of the main ventilation pipeline
Through-hole is offered at position, so that in the sound dispersion to the main ventilation pipeline of loudspeaker output.
9. such as the described in any item denoising devices of claim 4-8, which is characterized in that the reference noise in every grade of noise reduction module passes
Sensor and error noise sensor are arranged at the sound intensity that collected loudspeaker issues and are less than or equal in this grade of noise reduction module
The corresponding position of 1/10th of the sound intensity that loudspeaker position is issued by the loudspeaker, wherein every grade of noise reduction module
In reference noise sensor and error noise sensor position it is not identical.
10. a kind of central air-conditioning, which is characterized in that including any denoising device of main ventilation pipeline and claim 4-9.
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| CN111765619A (en) * | 2020-07-03 | 2020-10-13 | 深圳市旷世伟业工程有限公司 | Central air conditioner noise reduction structure and method thereof |
| CN112128918A (en) * | 2020-08-11 | 2020-12-25 | 清华大学苏州汽车研究院（相城） | Active noise control system for noise reduction of air conditioner fan and air conditioner |
| CN112201220B (en) * | 2020-10-07 | 2023-06-23 | 安庆师范大学 | Distributed three-dimensional space noise reduction system and application method thereof |
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| US9666175B2 (en) * | 2015-07-01 | 2017-05-30 | zPillow, Inc. | Noise cancelation system and techniques |
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