CN206877690U - A kind of electronics muffler - Google Patents
A kind of electronics muffler Download PDFInfo
- Publication number
- CN206877690U CN206877690U CN201720860674.8U CN201720860674U CN206877690U CN 206877690 U CN206877690 U CN 206877690U CN 201720860674 U CN201720860674 U CN 201720860674U CN 206877690 U CN206877690 U CN 206877690U
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- CN
- China
- Prior art keywords
- noise
- frequency
- sound wave
- collection device
- muffler
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model provides a kind of electronics muffler, include the noise collection device of a collection noise, one noise being collected into noise collection device carries out the arrangements for analyzing frequency of spectrum analysis, the controller of one acoustic wave oscillator for producing sound wave and described acoustic wave oscillator, described controller is connected with described arrangements for analyzing frequency, control acoustic wave oscillator is vibrated, produce the output of noise reduction sound wave, the frequency and amplitude of described noise reduction sound wave are identical with prominent frequency noise and amplitude in the noise that noise collection device receives, the phase angle of prominent noise differs 180 degree in the noise that the phase angle of noise reduction sound wave receives with noise collection device.In the utility model, according to noise frequency, by the noise cancellation of prominent frequency, noise can be reduced, and small product size is small at any time can be with portable installation.
Description
Technical field
Muffler field is the utility model is related to, more particularly to a kind of electronics muffler.
Background technology
Muffler (Muffler) is a kind of device for preventing sound transmission and allowing air-flow to pass through, and is to eliminate air force
The important measures of property noise.Muffler is mounted in air powered equipment (such as air blower, air compressor machine, boiler exhaust mouth, generating
The larger equipment of the exhaust outlet noises such as machine, water pump) gas channel on or inlet and exhaust system in reduction noise device.
At present, muffler mainly reduces noise using sound-absorbing porous material.Sound-absorbing material is fixed on air-flow to lead to
Arranged in the duct on the inwall in road or according to certain way, just constitute resistive muffler.When sound wave enters resistive muffler
When, a part of acoustic energy rubs in the hole of porous material and changes into thermal energy consumption and dissipate, and makes to weaken by the sound wave of muffler.
Resistive muffler just looks like pure resistor element circuit electrically, and sound-absorbing material is similar to resistance.Therefore, people are just this muffler
Referred to as resistive muffler.Resistive muffler is good to medium-high frequency soundproof effect, poor to low frequency soundproof effect.
Although erasure effect is relatively good in some cases for current muffler, the high volume of cost is big, special benzene weight, one
As the occasion that is suitable only for needing for a long time such as quiet room etc, if wanting noise reduction in a place temporarily, can not realize.
Utility model content
The utility model is for current muffler volume is big, cost is high, it is impossible to a kind of mobile deficiency, there is provided electronics noise reduction
Device.
The utility model is that technical scheme is used by realizing its technical purpose：A kind of electronics muffler, including one
Collect the noise collection device of noise, a noise being collected into noise collection device carries out the spectrum analysis dress of spectrum analysis
Put, the controller of an acoustic wave oscillator for producing sound wave and described acoustic wave oscillator, described controller and described frequency
Spectrum analytical equipment is connected, and control acoustic wave oscillator is vibrated, and produces the output of noise reduction sound wave, the frequency of described noise reduction sound wave
Rate and amplitude are identical with prominent frequency noise and amplitude in the noise that noise collection device receives, the phase of noise reduction sound wave
The phase angle of prominent noise differs 180 degree in the noise that angle receives with noise collection device.
In the utility model, according to noise frequency, by the noise cancellation of prominent frequency, noise can be reduced, and
Small product size is small at any time can be with portable installation.
Further, in above-mentioned electronics muffler：Described noise collection device is a microphone, described Mike
The output of wind connects arrangements for analyzing frequency.
Further, in above-mentioned electronics muffler：Described arrangements for analyzing frequency is the frequency spectrum for the noise that will be received
The power spectral analyzer arranged according to watt level.
Further, in above-mentioned electronics muffler：Also include the second acoustic wave oscillator, the second described acoustic wave oscillator
Under described controller control, the second noise reduction sound wave is exported, frequency and amplitude and the noise of the second described noise reduction sound wave are received
The frequency noise that power ranked second in the noise that acquisition means receive is identical with amplitude, and phase angle and the noise of the second noise reduction sound wave are received
The phase angle difference 180 degree for the noise that power ranked second in the noise that acquisition means receive.
The utility model is further detailed with reference to the accompanying drawings and detailed description.
Brief description of the drawings
Fig. 1 is ball-shaped toy structural representation of the present utility model.
Embodiment
Embodiment 1, as shown in figure 1, the present embodiment is a kind of portable electronics muffler, installed in the side of noise transmission
To can eliminate the partial noise in place below, typically may be mounted in an alley, be passed when there is noise from one end of alley
When broadcasting, when being arranged on one end that noise enters using the electronics muffler of the present embodiment, it can be made an uproar to wherein high-power
Acoustic frequency part is offset, and reduces the noise behind alley.
As shown in figure 1, in the present embodiment, sampled using a microphone inspection, the noise signal received is changed
Into electric signal, the frequency of electric signal with noise be it is consistent, at present, microphone can without distortion by all noise frequencies all
Sampling.Recycle a spectrum analyzer, to microphone output electric signal carry out frequency analysis, at present, spectrum analyzer or
The device that person has frequency analysis module soon can be analyzed the frequency spectrum of the noise received, by noise power and frequency
Rate corresponds, and controller is according to the control acoustic wave oscillator generation of the situation of spectrum analysis is identical with noise frequency, amplitude is identical
But being used for of opposite in phase eliminates the noise reduction sound wave of noise, the noise of component frequency is offset using noise reduction sound wave, in the present embodiment
Using three acoustic wave oscillators, the prominent noise frequency phase of first three in noise spectrum is produced under the control of the controller
The noise reduction sound wave for being used to eliminate noise identical with, amplitude but opposite in phase, it is possible to eliminate more noise.In practice
More noise frequencies can be offset using more acoustic wave oscillators, preferable effect will so occur.Practice
On, when in alley or room, one microphone is set in the side of source one of noise transmission, noise sampled, Ran Hou electricity
Signal is analyzed in arrangements for analyzing frequency, and how long it does not have to cost, soon can be ranked the frequency spectrum of noise,
So, controller can be according to sequence, and the place control acoustic wave oscillator in downstream produces corresponding noise reduction sound wave, made an uproar with these
Several frequencies in sound more than power offset.
Claims (4)
- A kind of 1. electronics muffler, it is characterised in that：Including a noise collection device for collecting noise, one to noise collection The noise that device is collected into carries out the arrangements for analyzing frequency of spectrum analysis, an acoustic wave oscillator for producing sound wave and described sound The controller of wave oscillator, described controller are connected with described arrangements for analyzing frequency, and control acoustic wave oscillator vibration is carried out Vibration, produces the output of noise reduction sound wave, in the noise that frequency and amplitude and the noise collection device of described noise reduction sound wave receive Prominent frequency noise is identical with amplitude, and power is most in the noise that the phase angle of noise reduction sound wave receives with noise collection device The phase angle difference 180 degree of big noise.
- 2. electronics muffler according to claim 1, it is characterised in that：Described noise collection device is a Mike Wind, the output of described microphone connect arrangements for analyzing frequency.
- 3. electronics muffler according to claim 1, it is characterised in that：Described arrangements for analyzing frequency will receive The power spectral analyzer that the frequency spectrum of noise arranges according to watt level.
- 4. according to the electronics muffler described in claim 1 or 2 or 3, it is characterised in that：Also include the second acoustic wave oscillator, institute The second acoustic wave oscillator stated exports the second noise reduction sound wave under described controller control, the second described noise reduction sound wave Frequency and amplitude are identical with the frequency noise and amplitude that power ranked second in the noise that noise collection device receives, the second noise reduction The phase angle for the noise that power ranked second differs 180 degree in the noise that the phase angle of sound wave receives with noise collection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720860674.8U CN206877690U (en) | 2017-07-17 | 2017-07-17 | A kind of electronics muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720860674.8U CN206877690U (en) | 2017-07-17 | 2017-07-17 | A kind of electronics muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206877690U true CN206877690U (en) | 2018-01-12 |
Family
ID=61330337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720860674.8U Expired - Fee Related CN206877690U (en) | 2017-07-17 | 2017-07-17 | A kind of electronics muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206877690U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111583898A (en) * | 2020-05-26 | 2020-08-25 | 舒伟伟 | Space environment multi-directional selective noise reduction system and method |
-
2017
- 2017-07-17 CN CN201720860674.8U patent/CN206877690U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111583898A (en) * | 2020-05-26 | 2020-08-25 | 舒伟伟 | Space environment multi-directional selective noise reduction system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180112 Termination date: 20210717 |
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| CF01 | Termination of patent right due to non-payment of annual fee |