CN208201400U - A kind of washing machine of active noise reduction - Google Patents
A kind of washing machine of active noise reduction Download PDFInfo
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- CN208201400U CN208201400U CN201820338016.7U CN201820338016U CN208201400U CN 208201400 U CN208201400 U CN 208201400U CN 201820338016 U CN201820338016 U CN 201820338016U CN 208201400 U CN208201400 U CN 208201400U
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Abstract
The utility model proposes a kind of washing machines of active noise reduction, including cabinet, tub assembly, driving unit, master control borad, denoising device, denoising device to connect with cabinet, and denoising device is connect with master control borad by communication network；Denoising device includes: central processing unit；Noise gathering device, connect with central processing unit；Audio-frequency amplifier is connect with central processing unit；Audio output unit is connect with audio-frequency amplifier.The utility model generates reference source identical as its amplitude, opposite in phase for noise signal source, realizes Denoising of Washing Machine by the superposition between sound wave；Furthermore pass through setting audio-frequency amplifier, power compensation is carried out to power attenuation existing for audio output unit, ensure the antiphase audio of actual play and the consistency for theoretically playing audio, existing difference therebetween is reduced to the full extent, difference especially on sonic wave amplitude, it improves through sound wave principle of stacking come the effect of offset noise, improves Denoising of Washing Machine ability.
Description
Technical field
The utility model relates to a kind of washing machines of active noise reduction.
Background technique
Noise pollution has seriously endangered the physical and mental health of consumer as one of current three big pollutions.With laundry
The development of machine product technology and the demand of human body, noise quality have become the key index of machine design.Washing machine
Noise be mainly derived from the vebrato and mechanicalness noise issued when washing of drum type washing machine, dewatering work, vebrato is washing machine
Under high speed dewatering, as caused by washings bias, sunpender spring, cushion, balance ring etc.；Mechanicalness noise is by washing machine component
Caused by assembly or the influencing each other of inter-module.Wherein high frequency noise can be effectively controlled by modes such as sound insulating and absorbings,
But middle low frequency noise is difficult fundamentally to be eliminated.
Application No. is CN200910206741.4, the method for reducing noise of entitled washing machine and washing for setting this method
The patent application of clothing machine, and application No. is CN200910206738.2, the entitled noises using acoustic washing machine
In the patent application of minishing method, the method used is to generate reverse phase voice signal according to noise signal and believe reverse phase sound
Number play to offset noise.
It is above-mentioned two in the prior art, by reverse phase voice signal play to offset noise, and the reverse voice signal
It being played out by audio output component (such as loudspeaker component), this noise reduction process theoretically has certain feasibility,
However since actual conditions sound intermediate frequency output precision can have certain power attenuation during playing sound, so that playing
There are certain deviations for sound out and the sound that should theoretically play out, and especially there are comparable on the amplitude of sound wave
Difference causes the effect of offset noise poor, to be unfavorable for improving the effect of Denoising of Washing Machine.
Utility model content
The utility model is in order to solve the problems, such as the noise reduction of washing machine in the prior art, especially sound in actual use
Frequency output precision leads to Denoising of Washing Machine effect poor due to power attenuation, proposes a kind of washing machine of active noise reduction.
In order to solve the above technical problems, the technical solution of the utility model is as follows:
A kind of washing machine of active noise reduction, including cabinet, tub assembly, driving unit and master control borad, the box house are set
It is equipped with accommodating chamber；The tub assembly, driving unit and master control borad, are configured in accommodating chamber；The washing machine further includes
Denoising device, the denoising device are connect with cabinet, are connected between denoising device and master control borad by communication network；
The denoising device includes:
Central processing unit, for handling the relevant information of Denoising of Washing Machine；
Noise gathering device, connect with central processing unit, for obtaining washing machine noise, and generates corresponding electric signal；
Audio-frequency amplifier is connect with central processing unit, and the audio signal for generating to central processing unit carries out power benefit
It repays；
Audio output unit is connect with audio-frequency amplifier, for carrying out audio output to the audio signal after power compensation.
Further, the denoising device is connect with cabinet, is configured on the top cover or side wall of cabinet.
Further, the central processing unit includes signal conversion unit, the electric signal for generating noise gathering device
Be converted to the audio signal of antiphase.
Preferably, the noise gathering device includes electrodynamic type microphone, Electret Condencer Microphone, piezoelectric microphone, electromagnetism
At least one of formula microphone, carbon granules formula microphone, semiconductor-type microphone.
Further, the denoising device includes at least one audio-frequency amplifier, and the audio-frequency amplifier includes:
Preamplifier is connect with central processing unit, the audio signal of the antiphase for being generated to central processing unit into
The amplification of row signal；
Power amplifier is connect with preamplifier and audio output unit respectively, for the audio signal to antiphase
Carry out power amplification.
Preferably, the audio output unit includes coil-moving speaker, condenser loudspeaker, piezo-electric loudspeaker, electricity
At least one of magnetic loudspeaker, electric ion type loudspeaker, pneumatic type loudspeaker.
Further, the denoising device further include:
Feed circuit is connect with central processing unit, audio output unit respectively, for believing the correlation of audio output unit
Breath feeds back to central processing unit；
Portion outside the enclosure is arranged in noise measuring unit；The noise measuring unit is connect with central processing unit, for drop
Noise information after making an uproar is detected.
Preferably, the noise measuring unit is noisemeter, for measuring to the noise decibel value after noise reduction.
Further, the denoising device further include:
Communication unit is connect with central processing unit, is connected between the communication unit and master control borad by communication network；
Power supply unit is independent power supply unit, is configured on the circuit board of denoising device, is the correlation of denoising device
Component provides electric power.
Preferably, the communication network is cordless communication network.
Compared with prior art, the utility model proposes a kind of washing machines of active noise reduction, pass through sound wave principle of stacking, needle
One identical as its amplitude, opposite in phase reference source is generated to noise signal source, it not only can be with by the superposition between sound wave
The high frequency noise generated in washing machine operational process is eliminated, while low frequency noise in corresponding can also be eliminated, to realize
The noise reduction of washing machine；
Furthermore by setting audio-frequency amplifier, power present in antiphase audio process is being played to audio output unit
Decaying carries out power compensation, it is ensured that the antiphase audio that actual play goes out and the consistency for theoretically playing audio, maximum journey
Existing difference, the difference especially on sonic wave amplitude therebetween are reduced on degree to be improved through sound wave principle of stacking
The effect for carrying out offset noise improves Denoising of Washing Machine ability.
Detailed description of the invention
It, below will be to needed in the embodiment attached in order to illustrate more clearly of the technical solution in the utility model
Figure is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, for this
For the those of ordinary skill in field, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of modular structure schematic diagram of the washing machine of active noise reduction described in the utility model；
Fig. 2 is a kind of principle of noise reduction schematic diagram of the washing machine of active noise reduction described in the utility model；
Fig. 3 is a kind of signal of the washing machine of active noise reduction described in the utility model when being applied to wall-mounted washing machine
Figure；
Fig. 4 is a kind of module diagram of the washing machine of active noise reduction described in the utility model.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the utility model.On the contrary, they be only with such as
The example of the consistent device and method of some aspects be described in detail in the appended claims, the utility model.
It is only to be not intended to be limiting this reality merely for for the purpose of describing particular embodiments in the term that the utility model uses
With novel.In the "an" of the utility model and singular used in the attached claims, " described " and "the"
Most forms are intended to include, unless the context clearly indicates other meaning.It is also understood that term used herein " and/
Or " refer to and include that one or more associated any or all of project listed may combine.
It will be appreciated that though various information may be described using term first, second, third, etc. in the utility model,
But these information should not necessarily be limited by these terms.These terms are only used to for same type of information being distinguished from each other out.For example, not
In the case where being detached from the scope of the utility model, the first information can also be referred to as the second information, and similarly, the second information can also be with
The referred to as first information.Depending on context, word as used in this " if " can be construed to " ... when " or
" when ... " or " in response to determination ".
The utility model will be described in detail by embodiment below.
Embodiment 1
As illustrated in the accompanying drawings from 1 to 3, a kind of washing machine of active noise reduction, the washing machine can be washed for rotary drum washing machine, roller
Clothing machine, wall-mounted washing machine or other kinds of washing machine have conventional washing machine dependency structure, including cabinet, bucket group
Part, driving unit and master control borad, the box house are provided with accommodating chamber；The tub assembly, driving unit and master control borad,
It is configured in accommodating chamber；In addition, same as the prior art, the washing machine further include water supply device, drainage arrangement with
And other component, it is the prior art in view of it, herein without repeating.
Noise reduction is carried out to washing machine in order to realize, the washing machine further includes denoising device, the denoising device and cabinet
Connection is connected between denoising device and master control borad by communication network；
The denoising device includes:
Central processing unit, for handling the relevant information of Denoising of Washing Machine, the electric signal such as generated to noise gathering device
Carry out antiphase processing, and generate corresponding audio signal etc.；
Noise gathering device, connect with central processing unit, for obtaining washing machine noise, and generates corresponding electric signal；
Audio-frequency amplifier is connect with central processing unit, and the audio signal for generating to central processing unit carries out power benefit
It repays；
Audio output unit is connect with audio-frequency amplifier, for carrying out audio output to the audio signal after power compensation.
The denoising device utilizes sound wave principle of stacking, generates a, phase identical as its amplitude for noise signal source
Opposite reference source carries out the elimination of noise by the superposition between sound wave；Specific noise reduction process is that noise gathering device obtains
It takes noise and generates corresponding noise electric signal, noise electric signal is sent to central processing unit, central processing by noise gathering device
Device generates the audio signal of an antiphase, while by audio-frequency amplifier to audio according to the signal message of noise electric signal
After signal carries out power compensation, exported through audio output unit, so that denoising device is capable of providing a waveform and noise waveform
Amplitude is identical, sound of opposite in phase, the sound is overlapped with noise and cancels out each other, and runs to realize in washing machine
Noise reduction is carried out in the process.
Specific theoretical as shown in Fig. 2, what the A in Fig. 2 was indicated is the noise generated in running washing machine, by making an uproar
Sound collector is converted to the chart of electric signal；What the B in Fig. 2 was indicated is the antiphase that central processing unit passes through that signal processing generates
Audio signal chart；What the C in Fig. 2 was indicated is by the B in the A and Fig. 2 in Fig. 2 according to sound wave principle of stacking, by phase
The chart of mutual respect poststack, finally represent A in Fig. 2 of noise waveform with represent denoising device output audio volume control Fig. 2 in B
It cancels out each other and removes, to realize the process of noise reduction.
And in actual noise reduction process, it is found by the applicant that if the audio of the antiphase directly generated to central processing unit is believed
It number plays out, since actual conditions sound intermediate frequency output unit can have certain power attenuation during playing sound,
So that there are certain deviations for the sound played out and the sound that should theoretically play out, especially in the amplitude of sound wave
On there are comparable differences, cause the effect of offset noise poor；Therefore, in the present embodiment, by the way that audio-frequency amplifier is arranged,
The progress power compensation of power attenuation present in antiphase audio process is being played to audio output unit, it is ensured that actual play
Antiphase audio out and the consistency for theoretically playing audio, reduce existing difference therebetween, especially to the full extent
It is the difference on sonic wave amplitude, improves through sound wave principle of stacking come the effect of offset noise, improves washing machine drop
It makes an uproar ability.
In addition, the noise signal that the denoising device can be not less than 20Hz to frequency carries out noise reduction, especially to 1kHz
Middle low frequency noise between above high frequency noise and 20Hz-1kHz, all has obvious noise reduction effect.
Embodiment 2
As illustrated in the accompanying drawings from 1 to 3, the denoising device is connect with cabinet, is configured on the top cover or side wall of cabinet, thus
Denoising device is operated convenient for user, allows users to actively select to close or open denoising device.
In addition, applicant has found under study for action, unlike other conventional washing machines, in the use of wall-mounted washing machine
In the process, noise source is not only in washing machine internal, but also certain noise can be also generated between wall-mounted washing machine and wall, if
It only can be reduced noise caused by washing machine internal using conventional noise reduction means, wall-mounted washing machine and wall can not be eliminated
Between noise；And in the present embodiment by the way that the denoising device is arranged on wall-mounted washing machine, it is superimposed by sound wave former
Reason generates identical as its amplitude, opposite in phase a reference source for signal source, can not only eliminate making an uproar for washing machine internal
Sound, moreover it is possible to eliminate except the noise between wall-mounted washing machine and wall.
Embodiment 3
As shown in Fig. 4, in order to be further described the noise reduction process to washing machine, the present embodiment does the denoising device
It further illustrates, specific:
The central processing unit includes signal conversion unit, and the electric signal for generating noise gathering device is converted to reverse phase
The audio signal of position；
Meanwhile noise gathering device is preferably microphone, including electrodynamic type microphone, Electret Condencer Microphone, piezoelectric type Mike
At least one of wind, electromagnetic microphone, carbon granules formula microphone, semiconductor-type microphone；
Audio output unit is preferably loudspeaker, including coil-moving speaker, condenser loudspeaker, piezo-electric loudspeaker,
At least one of electromagnetic loudspeaker, electric ion type loudspeaker, pneumatic type loudspeaker.
In addition to ensuring that denoising device carries out the reliability during power compensation, the denoising device to power attenuation
Including at least one audio-frequency amplifier, it is preferably provided with two or more, it is ensured that obtaining denoising device has different power amplification multiples,
To meet power compensation situation required for the power attenuation under the conditions of different use environment conditions or type
The audio-frequency amplifier includes: preamplifier, is connect with central processing unit, for what is generated to central processing unit
The audio signal of antiphase carries out signal amplification；Power amplifier is connect with preamplifier and audio output unit respectively, is used
Power amplification is carried out in the audio signal to antiphase.
Embodiment 4
As shown in Fig. 4, the present embodiment on the basis of embodiment 1, is further improved the function of denoising device, institute
State denoising device further include:
Feed circuit is connect with central processing unit, audio output unit respectively, for believing the correlation of audio output unit
Breath feeds back to central processing unit；
Portion outside the enclosure is arranged in noise measuring unit；The noise measuring unit is connect with central processing unit, for drop
Noise information after making an uproar is detected.
By setting feed circuit and noise measuring unit, obtained in real time so that denoising device is able to carry out noise reduction situation
It takes, and the audio signal of antiphase and the power compensation situation of audio-frequency amplifier of central processing unit generation is adjusted in real time
It is whole, realize the intelligence degree of Denoising of Washing Machine, it is ensured that washing machine actively can be analyzed and be adjusted to noise reduction situation；Tool
Body, denoising device according to antiphase audio signal execute noise reduction after, i.e. audio output unit after carrying out audio output,
Audio output unit is to central processing unit feedback noise reduction information, and after central processing unit receives noise reduction information, control noise detection is single
Member detects real-time noise information；If noise information is less than preset threshold, denoising device keeps current denoising act；If making an uproar
Message breath is greater than preset threshold, then central processing unit is to the audio signal information of antiphase or the power compensation times of audio-frequency amplifier
Rate is adjusted, so that denoising device carries out corresponding denoising act, is conducive to improve current noise reduction effect.
In the specific implementation process, the real-time noise refers to that the noise outside washing machine, noise information include at least noise
Decibel value, the preset threshold are preferably 40 decibels；The noise measuring unit is noisemeter, for the noise after noise reduction point
Shellfish value measures；Noise measuring unit carries out the decibel value of washing machine external noise after Denoising of Washing Machine process starts
Detection.
Embodiment 5
As shown in Fig. 4, in order to ensure the normal operation of denoising device, the present embodiment is also to the rest part of denoising device
Module is illustrated, the denoising device further include:
Communication unit is connect with central processing unit, is connected between the communication unit and master control borad by communication network；
Power supply unit is independent power supply unit, is configured on the circuit board of denoising device, is the correlation of denoising device
Component provides electric power；Said supply unit is preferably Rechargeable battery.
Communication network is preferably cordless communication network, including 3G network, 4G network, Wi-Fi (802.11) network, Wi-Max
(802.16) any of network, Bluetooth communication, ZigBee-network, frequency hopping spread spectrum (FHSS) radio net.
The foregoing is merely the preferred embodiments of the application, not to limit the application, all essences in the application
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the application protection.
Claims (10)
1. a kind of washing machine of active noise reduction, including cabinet, tub assembly, driving unit and master control borad, the box house setting
There is accommodating chamber；The tub assembly, driving unit and master control borad, are configured in accommodating chamber；It is characterized in that, the laundry
Machine further includes denoising device, and the denoising device is connect with cabinet, is connected between denoising device and master control borad by communication network；
The denoising device includes:
Central processing unit, for handling the relevant information of Denoising of Washing Machine；
Noise gathering device, connect with central processing unit, for obtaining washing machine noise, and generates corresponding electric signal；
Audio-frequency amplifier is connect with central processing unit, and the audio signal for generating to central processing unit carries out power compensation；
Audio output unit is connect with audio-frequency amplifier, for carrying out audio output to the audio signal after power compensation.
2. a kind of washing machine of active noise reduction as described in claim 1, which is characterized in that the denoising device and cabinet connect
It connects, is configured on the top cover or side wall of cabinet.
3. a kind of washing machine of active noise reduction as described in claim 1, which is characterized in that the central processing unit includes signal
Converting unit, the electric signal for generating noise gathering device are converted to the audio signal of antiphase.
4. a kind of washing machine of active noise reduction as described in claim 1, which is characterized in that the noise gathering device includes electronic
Formula microphone, Electret Condencer Microphone, piezoelectric microphone, electromagnetic microphone, carbon granules formula microphone, in semiconductor-type microphone
At least one.
5. a kind of washing machine of active noise reduction as described in claim 1, which is characterized in that the denoising device includes at least one
A audio-frequency amplifier, the audio-frequency amplifier include:
Preamplifier is connect with central processing unit, and the audio signal of the antiphase for generating to central processing unit carries out letter
Number amplification；
Power amplifier is connect with preamplifier and audio output unit respectively, is carried out for the audio signal to antiphase
Power amplification.
6. a kind of washing machine of active noise reduction as described in claim 1, which is characterized in that the audio output unit includes dynamic
Coil loundspeaker, condenser loudspeaker, piezo-electric loudspeaker, electromagnetic loudspeaker, electric ion type loudspeaker, pneumatic type loudspeaker
At least one of.
7. a kind of washing machine of active noise reduction as described in claim 1, which is characterized in that the denoising device further include:
Feed circuit is connect with central processing unit, audio output unit respectively, for the relevant information of audio output unit is anti-
It is fed to central processing unit；
Portion outside the enclosure is arranged in noise measuring unit；The noise measuring unit is connect with central processing unit, after to noise reduction
Noise information detected.
8. a kind of washing machine of active noise reduction as claimed in claim 7, which is characterized in that the noise measuring unit is noise
Meter, for being measured to the noise decibel value after noise reduction.
9. a kind of washing machine of active noise reduction as described in claim 1, which is characterized in that the denoising device further include:
Communication unit is connect with central processing unit, is connected between the communication unit and master control borad by communication network；
Power supply unit is independent power supply unit, is configured on the circuit board of denoising device, is the associated components of denoising device
Electric power is provided.
10. a kind of washing machine of active noise reduction as described in claim 1, which is characterized in that the communication network is channel radio
Communication network.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2017202393470 | 2017-03-13 | ||
| CN201720239347 | 2017-03-13 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473089A (en) * | 2018-12-29 | 2019-03-15 | 联想(北京)有限公司 | A kind of electronic equipment and processing method |
| CN109877262A (en) * | 2019-04-22 | 2019-06-14 | 西安航空职业技术学院 | A kind of noise reduction swage |
| CN111210798A (en) * | 2020-01-07 | 2020-05-29 | 珠海格力电器股份有限公司 | Noise reduction assembly, washing machine, and determination method and determination device of noise reduction algorithm |
| EP3907318A1 (en) * | 2020-05-05 | 2021-11-10 | emz-Hanauer GmbH & Co. KGaA | Washing machine with noise reduction |
| CN114360481A (en) * | 2021-11-26 | 2022-04-15 | 惠州华阳通用智慧车载系统开发有限公司 | Denoising driving method of buzzer |
| CN114360481B (en) * | 2021-11-26 | 2024-06-04 | 惠州华阳通用智慧车载系统开发有限公司 | Denoising driving method of buzzer |
-
2018
- 2018-03-13 CN CN201820338016.7U patent/CN208201400U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473089A (en) * | 2018-12-29 | 2019-03-15 | 联想(北京)有限公司 | A kind of electronic equipment and processing method |
| CN109877262A (en) * | 2019-04-22 | 2019-06-14 | 西安航空职业技术学院 | A kind of noise reduction swage |
| CN111210798A (en) * | 2020-01-07 | 2020-05-29 | 珠海格力电器股份有限公司 | Noise reduction assembly, washing machine, and determination method and determination device of noise reduction algorithm |
| EP3907318A1 (en) * | 2020-05-05 | 2021-11-10 | emz-Hanauer GmbH & Co. KGaA | Washing machine with noise reduction |
| CN114360481A (en) * | 2021-11-26 | 2022-04-15 | 惠州华阳通用智慧车载系统开发有限公司 | Denoising driving method of buzzer |
| CN114360481B (en) * | 2021-11-26 | 2024-06-04 | 惠州华阳通用智慧车载系统开发有限公司 | Denoising driving method of buzzer |
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