CN107289482A - A kind of lampblack absorber self study automatic noise reduction system and method - Google Patents
A kind of lampblack absorber self study automatic noise reduction system and method Download PDFInfo
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- CN107289482A CN107289482A CN201710595192.9A CN201710595192A CN107289482A CN 107289482 A CN107289482 A CN 107289482A CN 201710595192 A CN201710595192 A CN 201710595192A CN 107289482 A CN107289482 A CN 107289482A
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- noise
- cigarette machine
- self study
- noise reduction
- lampblack absorber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
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- Combustion & Propulsion (AREA)
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Abstract
The invention discloses a kind of lampblack absorber self study automatic noise reduction system and method, the system mainly includes cigarette machine, microphone and loudspeaker are provided with cigarette machine, cigarette machine is completed dispatch from the factory before carry out a pre-calibration as later live actual motion default reference data.Cigarette machine is installed to after user's family, cigarette machine is run in different speed stages；The cigarette machine noise and ambient noise of different rotating speeds section are gathered by microphone, the measured data collected is fed back into the signal processing module on cigarette machine, self study noise reduction algorithm module is according to default reference data in pre-calibration module, and the measured data of cigarette machine noise and ambient noise is combined, produce corresponding sound waveform；The sound waveform is exported by loudspeaker, for offsetting most noise.Beneficial effects of the present invention are：Main noise composition therein can be effectively got rid of, and reaches certain positive effect, it is not necessary to corresponding sound field and complicated algorithm is set up, supported without the need for expensive hardware circuit.
Description
Technical field
The present invention relates to lampblack absorber noise reduction field, mainly a kind of lampblack absorber self study automatic noise reduction system and method.
Background technology
, can be basic under different Operation Conditions in certain environment after each cigarette machine final assembly is good in cigarette machine field
One fixed noise curve of correspondence, such as 200RPM homologous threads A, 900RPM homologous threads B etc..Traditional active noise reduction is calculated
Method typically can set up near sound field model according to the actual environment and working condition according to cigarette machine, then be inputted according to this model parameter
Produce the sound waveform opposite with noise to offset noise come drive the speaker according to the result of output after algorithm process, because real
The difference of border installation environment, operating mode during actual motion is also different, causes that model and algorithm are extremely complex, and cost is high, most
Rear actual noise reduction and differ larger in theory, effect is nor very well.Actually cigarette machine production, be completed after, cigarette
The noise situations that machine itself is produced just are fixed up substantially, are then mounted to after actual environment, after cigarette machine combination surrounding environment
Noise situations as produced by kitchen area size, facility arrangement can be referred to as actual noise curve, be also to be continually changing
, but cigarette machine is mainly come from view of noise source, as long as controlling the noise energy that cigarette machine is sent, it is possible to a certain degree
Reduction is radiated the noise in surrounding space, reaches same or more preferable noise reduction.The actually different operating work of cigarette machine
In each noise curve produced under condition, noise energy shared by different frequency bands is different, as long as active noise reduction is main
Get rid of main noise composition therein and can reach certain positive effect, it is not necessary to set up corresponding sound field and complicated calculation
Method, is supported without the need for expensive hardware circuit.
The content of the invention
It is an object of the invention to overcome the shortcomings of that prior art is present, and provide a kind of automatic noise reduction of lampblack absorber self study
System and method.
The purpose of the present invention is completed by following technical solution.This lampblack absorber self study automatic noise reduction system,
Mainly include cigarette machine, microphone and loudspeaker are provided with cigarette machine, cigarette machine CPU drops with signal processing module, self study respectively
Make an uproar algoritic module and pre-calibration module electrical connection, wherein,
Microphone is used for the data for gathering cigarette machine noise and ambient noise；
The noise data that signal processing module is used to collect microphone carries out signal transacting；
Pre-calibration module：Under pre-set different rotating speeds, cigarette machine gathers a series of sonic profile parameter and recorded
Get off, be used as the default reference data of later live actual motion；
Self study noise reduction algorithm module combines cigarette machine noise and the actual measurement noise number of ambient noise according to default reference data
According to the corresponding sound waveform of generation；
Loudspeaker is used to produce the sound waveform for offsetting noise.
Further, described cigarette machine uses frequency conversion cigarette machine.
Further, described cigarette machine uses multi gear buncher.
Further, described microphone is at least provided with 2, and loudspeaker is at least provided with 1, and microphone and loudspeaker are adopted
Set with subregion multiple spot.
Further, shifted to install between described microphone and loudspeaker, for prevent microphone and loudspeaker it
Between interference.
Further, self study noise reduction algorithm module monitors the effect of noise reduction in real time, if by repeatedly attempting noise reduction
Effect can not reach expection, the corresponding parameter of algorithm adjust automatically until being finally achieved an optimal result, that is, realize and learn by oneself
The process of habit.
Further, cigarette machine is completed dispatch from the factory before carry out a pre-calibration, i.e., cigarette machine, which is placed on, meets certain condition
Anechoic chamber in, under pre-set different rotating speeds, cigarette machine gathers a series of sonic profile parameter and simultaneously recorded,
Then the default reference data of live actual motion after being stored as through self study noise reduction algorithm checking after errorless.
Further, cigarette machine is instructed according to mobile phone or high in the clouds, periodically or irregularly corresponding noise reduction process mistake
The detailed data recording and sending of journey is handled to high in the clouds is further, and the favourable later stage further optimization and upgrading self study is automatic
Noise reduction algorithm.
Further, the automatic noise reduction algorithm version of new self study can be issued in the way of OTA aerial upgrades from high in the clouds
To cigarette machine, noise reduction algorithm and system are continued to optimize.
Beneficial effects of the present invention are：
（1）, cigarette machine use frequency conversion cigarette machine or multi gear buncher, realize the speed governing purpose of many rotating speeds.
（2）, microphone and loudspeaker set using subregion multiple spot, the noise signal of different decibels can be collected, had
Beneficial to the automatic noise reduction algorithm of the optimization and upgrading self study.
（3）, shift to install between described microphone and loudspeaker, it is dry between microphone and loudspeaker for preventing
Disturb.
（4）, cigarette machine be completed before dispatching from the factory carry out a pre-calibration as later live actual motion default benchmark
Data, can effectively get rid of main noise composition therein, and reach certain positive effect, it is not necessary to set up corresponding sound field
With complicated algorithm, supported without the need for expensive hardware circuit.
（5）, cigarette machine instructed according to mobile phone or high in the clouds, periodically or irregularly the detailed of corresponding noise reduction process process
Data record is simultaneously sent to that high in the clouds is further to be handled, favourable later stage further optimization and upgrading self study noise reduction algorithm.
Brief description of the drawings
Fig. 1 is block diagram of the invention.
Fig. 2 is schematic flow sheet of the invention.
Embodiment
Detailed introduction is done to the present invention below in conjunction with accompanying drawing：
Embodiment 1：As shown in figure 1, this lampblack absorber self study automatic noise reduction system, mainly includes cigarette machine, set on cigarette machine
There are microphone and loudspeaker, cigarette machine CPU is electrically connected with signal processing module, self study noise reduction algorithm module and pre-calibration module respectively
Connect, wherein,
Microphone is used for the data for gathering cigarette machine noise and ambient noise；
The noise data that signal processing module is used to collect microphone carries out signal transacting；
Pre-calibration module：Under pre-set different rotating speeds, cigarette machine gathers a series of sonic profile parameter and recorded
Get off, be used as the default reference data of later live actual motion；
Self study noise reduction algorithm module combines cigarette machine noise and the actual measurement noise number of ambient noise according to default reference data
According to the corresponding sound waveform of generation；
Loudspeaker is used to produce the sound waveform for offsetting noise.
Embodiment 2：On the basis of embodiment 1, described cigarette machine uses frequency conversion cigarette machine or multi gear buncher, realizes many
The speed governing purpose of rotating speed, in the case of various rotating speed, can reach the purpose of automatic noise reduction.
Embodiment 3：On the basis of Examples 1 and 2, described microphone is at least provided with 2, and loudspeaker is at least provided with 1
Individual, microphone and loudspeaker are set using subregion multiple spot.Set in the high place of noise, in the relatively low place of noise
Set, the noise signal of different decibels can be collected, be conducive to the automatic noise reduction algorithm of the optimization and upgrading self study.
Embodiment 4：On the basis of above-described embodiment, shifted to install between described microphone and loudspeaker, for preventing
The only interference between microphone and loudspeaker.
Embodiment 5：This automatic noise-reduction method of lampblack absorber self study, this method mainly comprises the following steps：
（1）, cigarette machine be installed to after user's family, cigarette machine is run in different speed stage；
（2）, by microphone gather different rotating speeds section cigarette machine noise and ambient noise, the measured data collected is fed back to
Signal processing module on cigarette machine；
（3）, self study noise reduction algorithm module cigarette machine noise and ring are combined according to default reference data in pre-calibration module
The measured data of border noise, produces corresponding sound waveform；
（4）, the sound waveform exported by loudspeaker, for offsetting most noise；Cigarette machine can also be controlled as needed
Exhaust air rate, so as to control the overall noise of cigarette machine.
Embodiment 6：On the basis of embodiment 5, self study noise reduction algorithm module monitors the effect of noise reduction in real time, if through
Cross and repeatedly attempt noise reduction and can not reach expection, algorithm can the corresponding parameter of adjust automatically until be finally achieved one it is optimal
As a result, that is, the process of self study is realized.
Embodiment 7：On the basis of embodiment 5 and 6, cigarette machine is completed dispatch from the factory before carry out a pre-calibration, can also
An exfactory inspection is considered, i.e. cigarette machine is placed in the anechoic chamber for meeting certain condition, in pre-set different turns
Under speed, cigarette machine gathers a series of sonic profile parameter and simultaneously recorded, then through self study noise reduction algorithm checking it is errorless after
The default reference data of live actual motion after being stored as.
Embodiment 8：On the basis of embodiment 5,6 and 7, instructed in cigarette machine according to mobile phone or high in the clouds, periodically or not
Periodically the detailed data recording and sending of corresponding noise reduction process process is handled to high in the clouds is further, the favourable later stage enters one
The step optimization and upgrading self study noise reduction algorithm.
Embodiment 9：On the basis of above-described embodiment, new self study noise reduction algorithm version is with the side of OTA aerial upgrades
Formula is issued to cigarette machine from high in the clouds, continues to optimize noise reduction algorithm and system, brings user more preferable noise reduction.
It is understood that it will be understood by those skilled in the art that being subject to technical scheme and inventive concept
It should all belong to the protection domain of appended claims of the invention with replacing or changing.
Claims (10)
1. a kind of lampblack absorber self study automatic noise reduction system, it is characterised in that：Mainly include cigarette machine, Mike is provided with cigarette machine
Wind and loudspeaker, cigarette machine CPU are electrically connected with signal processing module, self study noise reduction algorithm module and pre-calibration module respectively, its
In,
Microphone is used for the data for gathering cigarette machine noise and ambient noise；
The noise data that signal processing module is used to collect microphone carries out signal transacting；
Pre-calibration module：Under pre-set different rotating speeds, cigarette machine gathers a series of sonic profile parameter and recorded
Get off, be used as the default reference data of later live actual motion；
Self study noise reduction algorithm module combines cigarette machine noise and the actual measurement noise number of ambient noise according to default reference data
According to the corresponding sound waveform of generation；
Loudspeaker is used to produce the sound waveform for offsetting noise.
2. lampblack absorber self study automatic noise reduction system according to claim 1, it is characterised in that：Described cigarette machine is using change
Frequency cigarette machine.
3. lampblack absorber self study automatic noise reduction system according to claim 1, it is characterised in that：Described cigarette machine is using more
Shelves buncher.
4. lampblack absorber self study automatic noise reduction system according to claim 1, it is characterised in that：Described microphone is at least
2 are set, loudspeaker is at least provided with 1, and microphone and loudspeaker are set using subregion multiple spot.
5. the lampblack absorber self study automatic noise reduction system according to claim 1 or 4, it is characterised in that：Described microphone
Shifted to install between loudspeaker, for preventing the interference between microphone and loudspeaker.
6. a kind of automatic noise-reduction method of lampblack absorber self study, it is characterised in that：This method mainly comprises the following steps：
（1）, cigarette machine be installed to after user's family, cigarette machine is run in different speed stage；
（2）, by microphone gather different rotating speeds section cigarette machine noise and ambient noise, the measured data collected is fed back to
Signal processing module on cigarette machine；
（3）, self study noise reduction algorithm module cigarette machine noise and environment are combined according to default reference data in pre-calibration module
The measured data of noise, produces corresponding sound waveform；
（4）, the sound waveform exported by loudspeaker, for offsetting most noise.
7. the automatic noise-reduction method of lampblack absorber self study according to claim 6, it is characterised in that：Self study noise reduction algorithm mould
Block monitors the effect of noise reduction in real time, if can not reach expection by repeatedly attempting noise reduction, algorithm meeting adjust automatically is corresponding
Parameter until be finally achieved an optimal result, that is, realize the process of self study.
8. the automatic noise-reduction method of lampblack absorber self study according to claim 6, it is characterised in that：Cigarette machine, which is completed, to dispatch from the factory
Pre-calibration of preceding progress, i.e. cigarette machine is placed in the anechoic chamber for meeting certain condition, in pre-set different rotating speeds
Under, cigarette machine gathers a series of sonic profile parameter and simultaneously recorded, then through self study noise reduction algorithm checking it is errorless after deposit
The default reference data of live actual motion after being used as is stored up.
9. the automatic noise-reduction method of lampblack absorber self study according to claim 6 or 7, it is characterised in that：Cigarette machine is according to mobile phone
Or high in the clouds instruction, periodically or irregularly the detailed data recording and sending of corresponding noise reduction process process to high in the clouds do into
The processing of one step.
10. the automatic noise-reduction method of lampblack absorber self study according to claim 9, it is characterised in that：New self study noise reduction
Algorithm from high in the clouds can be issued to cigarette machine in the way of OTA aerial upgrades.
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| CN108534196A (en) * | 2018-03-08 | 2018-09-14 | 佛山市云米电器科技有限公司 | The cooking apparatus and its interlock method of noise reduction system and vision detection system linkage |
| CN109990327A (en) * | 2017-12-29 | 2019-07-09 | 宁波方太厨具有限公司 | A kind of voice screening technique of range hood |
| CN110660379A (en) * | 2019-09-29 | 2020-01-07 | 珠海格力电器股份有限公司 | Noise processing method and device and air conditioner |
| CN112259069A (en) * | 2020-10-21 | 2021-01-22 | 上海协格空调工程有限公司 | Dynamic active noise reduction method and air conditioning equipment |
| CN112361404A (en) * | 2020-10-27 | 2021-02-12 | 宁波方太厨具有限公司 | Noise reduction method and system for range hood and range hood with noise reduction system |
| CN112610996A (en) * | 2020-12-30 | 2021-04-06 | 珠海格力电器股份有限公司 | Active noise reduction control method for range hood based on neural network |
| TWI742520B (en) * | 2020-01-20 | 2021-10-11 | 大陸商寧波酷旺智能科技有限公司 | Noise reduction system using artificial intelligence and method thereof |
| CN114353139A (en) * | 2022-01-04 | 2022-04-15 | 杭州老板电器股份有限公司 | Audio injection updating method, control device and audio injection range hood |
| CN114353141A (en) * | 2022-01-05 | 2022-04-15 | 杭州老板电器股份有限公司 | Audio injection control method and device and audio injection range hood |
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| CN112361404A (en) * | 2020-10-27 | 2021-02-12 | 宁波方太厨具有限公司 | Noise reduction method and system for range hood and range hood with noise reduction system |
| CN112610996A (en) * | 2020-12-30 | 2021-04-06 | 珠海格力电器股份有限公司 | Active noise reduction control method for range hood based on neural network |
| CN114353139A (en) * | 2022-01-04 | 2022-04-15 | 杭州老板电器股份有限公司 | Audio injection updating method, control device and audio injection range hood |
| CN114353141A (en) * | 2022-01-05 | 2022-04-15 | 杭州老板电器股份有限公司 | Audio injection control method and device and audio injection range hood |
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