CN204084797U - The noise reduction system of air-conditioner set - Google Patents
The noise reduction system of air-conditioner set Download PDFInfo
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- CN204084797U CN204084797U CN201420622372.3U CN201420622372U CN204084797U CN 204084797 U CN204084797 U CN 204084797U CN 201420622372 U CN201420622372 U CN 201420622372U CN 204084797 U CN204084797 U CN 204084797U
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Abstract
The utility model discloses a kind of noise reduction system of air-conditioner set.Wherein, this system comprises: noise reduction system is arranged on the outer cage body of the compressor of air-conditioner set, and noise reduction system comprises: the first signal transducer, is arranged on the outer surface of outer cage body, for gathering the noise signal of outer cage body; Activeforce, is arranged on the outer surface of outer cage body, for sending force signal under control of the control signal; Secondary signal sensor, is arranged on the outer surface of outer cage body, for obtaining error signal according to noise signal and force signal; Signal processor, is connected with the first signal transducer, secondary signal sensor and activeforce, for generating control signal according to noise signal and error signal; Wherein, the first signal transducer, activeforce and secondary signal sensor are not point-blank.By the utility model, solve the problem that in prior art, air-conditioner set noise reduction error is large, achieve the effect reducing air-conditioner set noise reduction error.
Description
Technical field
The utility model relates to field of air conditioner control, in particular to a kind of noise reduction system of air-conditioner set.
Background technology
In prior art, can noise be produced during air-conditioner set work, and carry out passive noise reduction centering low frequency range noise DeGrain by increasing every, sound-absorbing material, the passive noise reduction of all-bottom sound will be realized simultaneously, greatly can increase the physical dimension of denoising device.The method of active noise reduction can also be adopted in prior art, general use sound control method active noise reduction, but existing sound control method, when elementary sound source is distribution sound source, need to arrange a lot of secondary sound source, secondary sound source is many, and secondary sound source interacts, noise reduction departure is corresponding will be increased, and the difficulty of control realization also increases a lot.
For problem large to air-conditioner set noise reduction error in prior art, at present effective solution is not yet proposed.
Utility model content
For problem large to air-conditioner set noise reduction error in correlation technique, not yet propose effective solution at present, for this reason, main purpose of the present utility model is the noise reduction system providing a kind of air-conditioner set, to solve the problem.
To achieve these goals, according to an aspect of the present utility model, provide a kind of noise reduction system of air-conditioner set, this system comprises: noise reduction system is arranged on the outer cage body of the compressor of air-conditioner set, noise reduction system comprises: the first signal transducer, be arranged on the outer surface of outer cage body, for gathering the noise signal of outer cage body; Activeforce, is arranged on the outer surface of outer cage body, for sending force signal under control of the control signal; Secondary signal sensor, is arranged on the outer surface of outer cage body, for obtaining error signal according to noise signal and force signal; Signal processor, is connected with the first signal transducer, secondary signal sensor and activeforce, for generating control signal according to noise signal and error signal; Wherein, the first signal transducer, activeforce and secondary signal sensor are not point-blank.
Further, noise reduction system also comprises: the first preamplifier, is connected with the first signal transducer, obtains the first amplifying signal for amplifying noise signal; First anti-fold wave filter, is connected with the first preamplifier, obtains the first filtering signal for carrying out filtering process to the first amplifying signal; First analog-digital converter, is connected with the first anti-fold wave filter, for the first filtering signal is converted to the first data signal; Signal processor is connected with the first analog-digital converter, for receiving the first data signal.
Further, noise reduction system also comprises: the second preamplifier, is connected with secondary signal sensor, obtains the second amplifying signal for fault in enlargement signal; Second anti-fold wave filter, is connected with the second preamplifier, obtains the second filtering signal for carrying out filtering process to the second amplifying signal; Second analog-digital converter, is connected with the second anti-fold wave filter, for the second filtering signal is converted to the second data signal; Signal processor is connected with the second analog-digital converter, for receiving the second data signal.
Further, noise reduction system also comprises: digital to analog converter, is connected with signal processor, for control signal is converted to analog signal; Smoothing filter, is connected with digital to analog converter, obtains the 3rd filtering signal for analog signal being carried out filtering process; Power amplifier, is connected with smoothing filter, obtains the 3rd amplifying signal for the 3rd filtering signal is carried out power amplification; Activeforce is connected with power amplifier, for receiving the 3rd amplifying signal.
Further, activeforce comprises: brake, is connected with power amplifier, for generating the 3rd amplifying signal.
Further, the side of the first signal transducer, activeforce and the secondary signal sensor setting air-out grid of the outer surface of engine housing outside.
Further, the first signal transducer is acceleration transducer or microphone.
Further, secondary signal sensor is error pick-up, and error pick-up is acceleration transducer or microphone.
Adopt the utility model embodiment, force signal is sent by activeforce, this secondary signal sensor detect force signal superposes with the noise signal of outer cage body the error signal obtained, and generation control signal controls the force signal that activeforce sends accordingly, predetermined threshold value is less than to make error signal, pass through above-described embodiment, make the mode firmly controlled, activeforce arranged by air-conditioning vibrational structure, control the size (namely controlling the force signal of activeforce) of activeforce, to control the vibration of air-conditioning vibrational structure, the final noise realizing the radiation of control vibrational structure, solve the problem that in prior art, air-conditioner set noise reduction error is large, achieve the effect reducing air-conditioner set noise reduction error.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram of the noise reduction system of air-conditioner set according to the utility model embodiment;
Fig. 2 is the schematic diagram of the noise reduction system of a kind of optional air-conditioner set according to the utility model embodiment;
Fig. 3 is the active noise reduction system sketch of the generation control signal according to the utility model embodiment;
Fig. 4 is the schematic diagram of the noise reduction system of air-conditioner set according to the utility model embodiment; And
Fig. 5 is the flow chart of the noise-reduction method of air-conditioner set according to the utility model embodiment.
Detailed description of the invention
The utility model scheme is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the embodiment of the utility model part, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the utility model protection.
It should be noted that, term " first ", " second " etc. in description of the present utility model and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiment of the present utility model described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
Fig. 1 is the schematic diagram of the noise reduction system of air-conditioner set according to the utility model embodiment, and this system can comprise as shown in Figure 1: the first signal transducer 10, activeforce 30, secondary signal sensor 50 and signal processor 70.
Wherein, noise reduction system is arranged on the outer cage body of the compressor of air-conditioner set.First signal transducer, is arranged on the outer surface of outer cage body, for gathering the noise signal of outer cage body; Activeforce, is arranged on the outer surface of outer cage body, for sending force signal under control of the control signal; Secondary signal sensor, is arranged on the outer surface of outer cage body, for obtaining error signal according to noise signal and force signal; Signal processor, is connected with the first signal transducer, secondary signal sensor and activeforce, for generating control signal according to noise signal and error signal; Wherein, the first signal transducer, activeforce and secondary signal sensor are not point-blank.Signal processor in above-described embodiment can be arranged on the outer surface of outer cage body, also can not arrange on that exterior.
First signal transducer, activeforce can be connected with signal processor by optical fiber or cable with secondary signal sensor, and signal processor can be connected with host computer.
Adopt the utility model embodiment, force signal is sent by activeforce, this secondary signal sensor detect force signal superposes with the noise signal of outer cage body the error signal obtained, and generation control signal controls the force signal that activeforce sends accordingly, predetermined threshold value is less than to make error signal, pass through above-described embodiment, make the mode firmly controlled, activeforce arranged by air-conditioning vibrational structure, control the size (namely controlling the force signal of activeforce) of activeforce, to control the vibration of air-conditioning vibrational structure, the final noise realizing the radiation of control vibrational structure, solve the problem that in prior art, air-conditioner set noise reduction error is large, achieve the effect reducing air-conditioner set noise reduction error.
In the above-described embodiments, the Main Noise Sources of outdoor machine of air-conditioner is compressor, and the vibration of compressor is connected by footing and pipeline, is directly delivered on the body shell of outer machine, the noise of compressor is by the mode of coupled vibro-acoustic simultaneously, is directly radiated by body shell.Noise reduction system is arranged on the outer surface of the housing of outer machine, can controls the vibration of body shell well, thus the outside radiated noise of outdoor machine of air-conditioner can well be controlled.
According to above-described embodiment of the present utility model, noise reduction system can also comprise: the first preamplifier, is connected with the first signal transducer, obtains the first amplifying signal for amplifying noise signal; First anti-fold wave filter, is connected with the first preamplifier, obtains the first filtering signal for carrying out filtering process to the first amplifying signal; First analog-digital converter, is connected with the first anti-fold wave filter, for the first filtering signal is converted to the first data signal; Signal processor is connected with the first analog-digital converter, for receiving the first data signal.
By above-described embodiment, distortionless noise signal exactly can be obtained by preamplifier, anti-fold wave filter and analog-digital converter.
In another embodiment of the present utility model, noise reduction system can also comprise: the second preamplifier, is connected with secondary signal sensor, obtains the second amplifying signal for fault in enlargement signal; Second anti-fold wave filter, is connected with the second preamplifier, obtains the second filtering signal for carrying out filtering process to the second amplifying signal; Second analog-digital converter, is connected with the second anti-fold wave filter, for the second filtering signal is converted to the second data signal; Signal processor is connected with the second analog-digital converter, for receiving the second data signal.
By this embodiment, distortionless error signal exactly can be obtained by preamplifier, anti-fold wave filter and analog-digital converter.
Need to further illustrate, noise reduction system can also comprise: digital to analog converter, is connected with signal processor, for control signal is converted to analog signal; Smoothing filter, is connected with digital to analog converter, obtains the 3rd filtering signal for analog signal being carried out filtering process; Power amplifier, is connected with smoothing filter, obtains the 3rd amplifying signal for the 3rd filtering signal is carried out power amplification; Activeforce is connected with power amplifier, for receiving the 3rd amplifying signal.
Further, activeforce can comprise: brake, and brake generates the 3rd amplifying signal.Brake can send certain force signal.
In above-described embodiment of the present utility model, the first signal transducer is acceleration transducer or microphone; Secondary signal sensor is error pick-up, and error pick-up is acceleration transducer or microphone.
In embodiment as shown in Figure 2, the side of the first signal transducer, activeforce and the secondary signal sensor setting air-out grid of the outer surface 90 of engine housing outside.In this embodiment, secondary signal sensor 50 can be error pick-up, and error pick-up can be acceleration transducer; First signal transducer 10 can be acceleration transducer, and it is input, and the signal collected is acceleration signal, may also be the microphone of monitoring noise, its objective is monitoring superimposed noise size or panel vibration size.Activeforce 30 can comprise brake, and brake sends certain force signal, produces a level vibration, superposes with elementary vibration (namely above-mentioned noise signal).Signal processor 70 in Fig. 2 is connected with the first signal transducer, secondary signal sensor and activeforce respectively.
In above-described embodiment of the present utility model, signal processor can carry out signal transacting and generate control signal, and also noise signal and error signal can be uploaded to host computer, the controller of host computer carries out signal analysis to it and obtains control signal.Particularly, signal analysis can be analyzed for adopting the algorithm of-XLMS.
Introduce the generative process of control signal in detail below in conjunction with accompanying drawing 3 and accompanying drawing 4, as shown in Figure 3 and Figure 4, this processing procedure can be the process of active noise reduction, and the noise source 80 in Fig. 4 can be the vibration of the outer cage body of air-conditioner set.
The error signal e (n) that error pick-up (the secondary signal sensor namely in above-described embodiment) receives: e (n)=d (n)+s (n), e (n) is air-conditioner set (elementary power source, in the above-described embodiments for outer cage body) the vibration signal of vibration after error pick-up position superposes that produce with brake (activeforce) of vibration, the force signal that s (n) wherein sends for activeforce that error pick-up receives, d (n) is desired signal, and namely elementary sound source is in the noise signal of error pick-up position.Force signal s (n) that the activeforce that error pick-up receives sends: the vibration signal that s (n)=y (n) * hs (n), y (n) exports for brake, hs (n) is transfer function.
Particularly, hs (n) is the transfer function between brake (activeforce) to error pick-up.
The size of above-mentioned y (n) brake output signal is linear weighted function vector sum: y (n)=W (n) X of input X (n)
t(n), wherein, W (n) is weighing vector, W (n) is the weighing vector of length L, is designated as [w1 (n), w2 (n), wL (n)], X (n) is reference input vector, is designated as [x (n), x (n-1),, x (n-L+1)], this reference input vector is noise signal.
In the above-described embodiments, Lv Bo – X signal: r (n)=X (n) * hs (n); Weight coefficient vector iterative formula: W (n+1)=W (n)-2ue (n) r (n).
Wherein, r (n) is Lv Bo – X signal, is to be obtained by input and transfer function hs (n) convolution algorithm, and above-mentioned u is convergence coefficient or convergence factor.
Fig. 5 is the flow chart of the noise-reduction method of air-conditioner set according to the utility model embodiment.As shown in Figure 5, the method can comprise the steps:
Step S502: the noise signal gathering the outer cage body of air-conditioner set.
Step S504: obtain the noise signal of outer cage body and the force signal of activeforce.
Step S506: generate error signal according to noise signal and force signal.
Step S508: generate control signal according to noise signal and error signal.
Step S510: use control signal to control activeforce and send force signal, be less than predetermined threshold value to make error signal.
Adopt the utility model embodiment, force signal is sent by activeforce, this secondary signal sensor detect force signal superposes with the noise signal of outer cage body the error signal obtained, and generation control signal controls the force signal that activeforce sends accordingly, predetermined threshold value is less than to make error signal, pass through above-described embodiment, make the mode firmly controlled, activeforce arranged by air-conditioning vibrational structure, control the size (namely controlling the force signal of activeforce) of activeforce, to control the vibration of air-conditioning vibrational structure, the final noise realizing the radiation of control vibrational structure, solve the problem that in prior art, air-conditioner set noise reduction error is large, achieve the effect reducing air-conditioner set noise reduction error.
In the above-described embodiments, the Main Noise Sources of outdoor machine of air-conditioner is compressor, and the vibration of compressor is connected by footing and pipeline, is directly delivered on the body shell of outer machine, the noise of compressor is by the mode of coupled vibro-acoustic simultaneously, is directly radiated by body shell.Noise reduction system is arranged on the housing of outer machine, gathers the noise signal of outer cage body, can control the vibration of body shell well, thus the outside radiated noise of outdoor machine of air-conditioner can well be controlled.
It should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, but in some cases, can be different from the step shown or described by order execution herein.
To achieve these goals, according to an aspect of the present utility model, provide a kind of denoising device of air-conditioner set, this device comprises: acquisition module, for gathering the noise signal of the outer cage body of air-conditioner set; Acquisition module, for the force signal of the noise signal and activeforce that obtain outer cage body; First generation module, for generating error signal according to noise signal and force signal; Second generation module, for generating control signal according to noise signal and error signal; Control module, controls activeforce for using control signal and sends force signal, be less than predetermined threshold value to make error signal.
Adopt the utility model embodiment, force signal is sent by activeforce, this secondary signal sensor detect force signal superposes with the noise signal of outer cage body the error signal obtained, and generation control signal controls the force signal that activeforce sends accordingly, predetermined threshold value is less than to make error signal, pass through above-described embodiment, make the mode firmly controlled, activeforce arranged by air-conditioning vibrational structure, control the size (namely controlling the force signal of activeforce) of activeforce, to control the vibration of air-conditioning vibrational structure, the final noise realizing the radiation of control vibrational structure, solve the problem that in prior art, air-conditioner set noise reduction error is large, achieve the effect reducing air-conditioner set noise reduction error.
In the above-described embodiments, the Main Noise Sources of outdoor machine of air-conditioner is compressor, and the vibration of compressor is connected by footing and pipeline, is directly delivered on the body shell of outer machine, the noise of compressor is by the mode of coupled vibro-acoustic simultaneously, is directly radiated by body shell.Noise reduction system is arranged on the housing of outer machine, gathers the noise signal of outer cage body, can control the vibration of body shell well, thus the outside radiated noise of outdoor machine of air-conditioner can well be controlled.
The modules provided in the present embodiment is identical with the using method that the corresponding step of embodiment of the method provides, application scenarios also can be identical.It is noted, of course, that the scheme that above-mentioned module relates to can be not limited to content in above-described embodiment one and scene, and above-mentioned module may operate in terminal or mobile terminal, can pass through software or hardware implementing.
By above-described embodiment, activeforce arranged by outdoor machine of air-conditioner cabinet, by the size in control source, suppress the vibration of drawing the housing that vibration of compressor causes, thus reach the effect of reduction housing to extraradial noise.
As can be seen from the above description, the utility model achieves following technique effect:
Adopt the utility model embodiment, force signal is sent by activeforce, this secondary signal sensor detect force signal superposes with the noise signal of outer cage body the error signal obtained, and generation control signal controls the force signal that activeforce sends accordingly, predetermined threshold value is less than to make error signal, pass through above-described embodiment, make the mode firmly controlled, activeforce arranged by air-conditioning vibrational structure, control the size (namely controlling the force signal of activeforce) of activeforce, to control the vibration of air-conditioning vibrational structure, the final noise realizing the radiation of control vibrational structure, solve the problem that in prior art, air-conditioner set noise reduction error is large, achieve the effect reducing air-conditioner set noise reduction error.
The claimed calculator of the utility model and each assembly forming this processor be all a kind of have determine shape, structure and occupy the entity products of certain space.Such as, checkout gear, microprocessor, image processor, sub-processor etc. are all can independent operating, the computer equipment with particular hardware structure, terminal or server.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. a noise reduction system for air-conditioner set, is characterized in that, be arranged on the outer cage body of the compressor of air-conditioner set, described noise reduction system comprises:
First signal transducer, is arranged on the outer surface of described outer cage body, for gathering the noise signal of described outer cage body;
Activeforce, is arranged on the described outer surface of described outer cage body, for sending force signal under control of the control signal;
Secondary signal sensor, is arranged on the described outer surface of described outer cage body, for obtaining error signal according to described noise signal and described force signal;
Signal processor, is connected with described first signal transducer, described secondary signal sensor and described activeforce, for generating described control signal according to described noise signal and described error signal;
Wherein, described first signal transducer, described activeforce and described secondary signal sensor are not point-blank.
2. noise reduction system according to claim 1, is characterized in that, described noise reduction system also comprises:
First preamplifier, is connected with described first signal transducer, obtains the first amplifying signal for amplifying described noise signal;
First anti-fold wave filter, is connected with described first preamplifier, obtains the first filtering signal for carrying out filtering process to described first amplifying signal;
First analog-digital converter, is connected with described first anti-fold wave filter, for described first filtering signal is converted to the first data signal;
Described signal processor is connected with described first analog-digital converter, for receiving described first data signal.
3. noise reduction system according to claim 1, is characterized in that, described noise reduction system also comprises:
Second preamplifier, is connected with described secondary signal sensor, obtains the second amplifying signal for amplifying described error signal;
Second anti-fold wave filter, is connected with described second preamplifier, obtains the second filtering signal for carrying out filtering process to described second amplifying signal;
Second analog-digital converter, is connected with described second anti-fold wave filter, for described second filtering signal is converted to the second data signal;
Described signal processor is connected with described second analog-digital converter, for receiving described second data signal.
4. noise reduction system according to claim 1, is characterized in that, described noise reduction system also comprises:
Digital to analog converter, is connected with described signal processor, for described control signal is converted to analog signal;
Smoothing filter, is connected with described digital to analog converter, obtains the 3rd filtering signal for described analog signal being carried out filtering process;
Power amplifier, is connected with described smoothing filter, obtains the 3rd amplifying signal for described 3rd filtering signal is carried out power amplification;
Described activeforce is connected with described power amplifier, for receiving described 3rd amplifying signal.
5. noise reduction system according to claim 4, is characterized in that, described activeforce comprises:
Brake, is connected with described power amplifier, for generating described 3rd amplifying signal.
6. noise reduction system as claimed in any of claims 1 to 5, is characterized in that, described first signal transducer, described activeforce and described secondary signal sensor setting are in the side of the air-out grid of the described outer surface of described outer cage body.
7. noise reduction system as claimed in any of claims 1 to 5, is characterized in that, described first signal transducer is acceleration transducer or microphone.
8. noise reduction system as claimed in any of claims 1 to 5, is characterized in that, described secondary signal sensor is error pick-up, and described error pick-up is acceleration transducer or microphone.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279738A (en) * | 2014-10-24 | 2015-01-14 | 珠海格力电器股份有限公司 | Method, device and system for reducing noise of air conditioning unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279738A (en) * | 2014-10-24 | 2015-01-14 | 珠海格力电器股份有限公司 | Method, device and system for reducing noise of air conditioning unit |
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