CN101246684A - Electric system for actively eliminating noise - Google Patents
Electric system for actively eliminating noise Download PDFInfo
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- CN101246684A CN101246684A CNA2007100801495A CN200710080149A CN101246684A CN 101246684 A CN101246684 A CN 101246684A CN A2007100801495 A CNA2007100801495 A CN A2007100801495A CN 200710080149 A CN200710080149 A CN 200710080149A CN 101246684 A CN101246684 A CN 101246684A
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Abstract
The present invention provides an active electronic system for eliminating noise, including: a case, the first electronic unit, a noise collector, an error inductor, a sound driver, and a micro controller unit. The noise collector is set in the case; the noise collector is set in the case and adjacent to the first electronic element for collecting the first noise generated by the first electronic element; the error inductor is set in the case for collecting the feedback noise which is different to the first noise; the micro controller unit is coupled with the noise collecot, the sound driver and the error inductor, the micro controller unit controls the sound driver to generate the second noise opposite to the first noise according to the first noise collected by the noise collector and the feedback noise collected by the error inductor.
Description
Technical field
The invention relates to a kind of noise absorber, refer to a kind of active electronic system that abates the noise especially.
Background technology
Along with making rapid progress of information and electronic technology, each electronic product can provide people the required function of living, form and be the necessary articles for use of living, for example, computer apparatus can provide office and amusement functions such as all kinds of Data Processing of people, mathematical operation, multimedia video broadcast, and electrical home appliances such as air conditioner, washing machine, dish-washing machine then can provide housework processing capacity at home.Yet, because the element of electronic product inside can produce many heat energy when running, so can on cabinet, design air admission hole and vent port usually.This design will make the inside source of sound in the cabinet directly outwards transmit the generation noise via louvre.
In addition, electronic product inside also may be provided with radiator fan heat energy is discharged, and make all energy normal operations of element of electronic product inside, yet the generation of noise is often followed in the running of radiator fan, causes the bad impression of consumer to product quality.In addition, the electronic product inner member, for example hard disk, CD-ROM drive, motor etc. itself also can produce vibration in the running, and then cause the generation of noise, lack greatly for one in the electronic product use in fact.
For eliminating or reduce the generation of noise, traditional way mainly is to reduce noise with passive type every (suction) sound material or crash roll, its cardinal principle be in the sound transmission path installing sound-proof material or with the material with sound-absorbing effect be centered around noise source around, noise with insulating noise or absorption portion, but this way is often because of the narrow and small restriction to some extent in electronic product inner space, therefore this way is relatively more difficult on using, and generally not good for the lower noise source effect of frequency.
In known patent documentation, U.S. Patent Publication US2003/0052807 (being called for short ' 807) discloses a kind of noise absorber and method.' 807 are provided with microphone near the noise source of computer apparatus inside, to collect the noise that the computer apparatus inner member is produced.Then, collected noise is carried out Treatment Analysis, to judge the kenel of noise.Afterwards, the audio device that is had with computer apparatus itself (for example, sound card, loudspeaker) produces and the opposite noise of aforementioned noise phase place again, to eliminate the waveform of aforementioned noise.Yet, because ' 807 only utilize a microphone to collect noise, so in order accurately to detect noise, the position is set tries one's best near noise source of above-mentioned microphone, for example, microphone is arranged on by the fan of power supply unit of computer apparatus inside, and such way will make the other microphone of fan that is arranged on power supply unit possibly can't effectively collect from the distant noise of this microphone.
For instance, power supply unit is organized the rear that is located at computer apparatus usually, and hard disk, CD-ROM drive usually group be located at front panel near computer apparatus, so noise that above-mentioned microphone just might effectively be collected hard disk or CD-ROM drive and produced, thereby can't effectively eliminate noise arround the front panel, and then cause user's puzzlement.
In addition, the discrete tone (Discrete Tone) of the local narrow frequency that the vibration that is produced because of the element running in computer apparatus causes also is not easy to be detected by microphone effectively, so only collect the easily distortion of waveform that vibration produces by microphone, produce corresponding anti-noise whereby, possibly can't effectively eliminate because the noise that vibration of element produced.
So, how effectively to eliminate the noise of computer product, to allow the user feel more comfortable, be one to be badly in need of the problem that solves in fact.
Summary of the invention
The object of the present invention is to provide a kind of active electronic system that abates the noise, enable the discrete tone problem that effectively reduces the noise of electronic product and eliminate local narrow frequency, to improve the sound quality of electronic product.
For solving the above problems, provide a kind of active electronic system that abates the noise in one embodiment of the invention.This electronic system comprises casing, at least one first electronic component, at least one noise gatherer, at least one audio drivers, at least one error inductor, reaches micro-control unit.Above-mentioned first electronic component is arranged in the casing.Above-mentioned noise gatherer is arranged in the casing and contiguous first electronic component, to collect first noise that first electronic component is produced.Above-mentioned error inductor is arranged in the casing, and to collect a feedback noise, wherein the feedback noise is different from first noise.Above-mentioned micro-control unit is coupled to noise gatherer, audio drivers, reaches the error inductor.In addition, the feedback noise that micro-control unit is collected according to collected first noise of noise gatherer and error inductor is controlled audio drivers and is produced second noise of phase place in contrast to first noise.
In one embodiment, casing has an operating surface for user's operation, and the error inductor can be arranged on contiguous operating surface part in the casing.
In one embodiment, the noise gatherer captures first electronic component and produces the signal of first noise and be sent to micro-control unit, and then micro-control unit produces second noise (anti-noise) with reference to aforementioned signal rear drive audio drivers; At last, the error inductor detects control performance and is fed back to micro-control unit and does Adaptive Control to reach the Optimal Control result.
In one embodiment, the noise gatherer comprises microphone, quickens rule or piezoelectric inductor.When first noise that is produced when first electronic component is vibrating noise, uses usually and quicken rule as the noise gatherer.
In one embodiment, audio drivers comprises loudspeaker or Vib..When first noise was produced by the pliability structure quake, audio drivers involving vibrations device to change structural vibrations, therefore improved the radiation sound that vibration is excited.
In one embodiment, the error inductor comprises microphone, quickens rule or piezoelectric inductor.
In one embodiment, micro-control unit continues to adjust second noise according to first noise and feedback noise, until the collected feedback noise of error inductor less than a default threshold value.
In one embodiment, casing has an operating surface, and the error inductor is arranged in the casing and contiguous operating surface part.
Effect of the present invention:
The present invention locates the step-up error inductor by the close user in electronic system, for example microphone or vibration sensor etc., approach noise and the vibration that user institute reality is experienced to collect and to detect, and with its feedback constantly to adjust noise and vibration to eliminate waveform, make the user no longer be subjected to the interference of noise thereby can eliminate or reduce noise effectively.
Description of drawings
Fig. 1 is the system architecture diagram of a preferred embodiment of the active electronic system that abates the noise of the present invention;
Fig. 2 is applied to the enforcement synoptic diagram of air conditioner for the active electronic system that abates the noise in a preferred embodiment of the present invention;
Fig. 3 is the control flow chart of the micro-control unit of the active electronic system that abates the noise in a preferred embodiment of the present invention;
Fig. 4 (A), (B), (C) are the examples according to the waveform of the active collected noise of electronic system that abates the noise of the present invention;
Fig. 5 (A), (B), (C) are another examples according to the waveform of the active collected noise of electronic system that abates the noise of the present invention;
Fig. 6 is the system architecture diagram of another preferred embodiment of the active electronic system that abates the noise of the present invention;
Fig. 7 is applied to the enforcement synoptic diagram of computer apparatus for the active electronic system that abates the noise in another preferred embodiment of the present invention.
Embodiment
The explanation of relevant preferred embodiment of the present invention please wherein Figure 1 shows that the system architecture diagram of preferred embodiment of the present invention in the lump with reference to Fig. 1 and Fig. 2, Figure 2 shows that the active electronic system that abates the noise is applied to the enforcement synoptic diagram of air conditioner.In Fig. 1 and Fig. 2, electronic system has a casing 101, and casing 101 has an operating surface 102 for user's 109 operations, for example guidance panel 202 of air conditioner; Comprise at least one first electronic component 103, at least one first noise gatherer 104, at least one first error inductor 105, at least one first audio drivers 106 in the casing 101, reach micro-control unit 107.
Aforementioned first electronic component 103 for example is the compressor 203 of air conditioner, can produce discordant noise usually during its running; The aforementioned first noise gatherer 104 for example is a microphone, and it is arranged at contiguous first electronic component 103, and is collected first noise that is produced when first electronic component 103 operates exactly.
The aforementioned first error inductor 105 for example is a microphone, and operating surface 102 parts that it can be arranged near casing 101 perhaps are arranged in the casing 101 and contiguous operating surface 102 parts.Because operating surface 102 is normally towards user 109, and generally user 109 is usually located near operating surface 102 parts, approaches the feedback noise that user's 109 reality are experienced so the first error inductor 105 can be collected.It should be noted that this feedback noise is different from aforementioned first noise.
Aforementioned first audio drivers 106 for example is loudspeaker, and it can be arranged at any locus in the casing 101.
Aforementioned micro-control unit 107 is coupled to the first noise gatherer 104, the first error inductor 105, reaches first audio drivers 106, according to the signal of first collected electronic component 103 first noise that produces of the first noise gatherer 104, then produce second noises (anti-noise) according to this with reference to this signal rear drive first audio drivers 106.Then, the first error inductor 105 detects control performance and is fed back to micro-control unit 107 and does Adaptive Control to reach the Optimal Control result.
Please in the lump with reference to Fig. 3, it is depicted as the control flow of micro-control unit 107.At first, collect the first noise N (step S301), shown in Fig. 4 (A), be the example of the waveform of the collected first noise N with the first noise gatherer 104; Secondly, the 104 first collected noise N produce the second noise N (step S302) of a phase place in contrast to this first noise N according to the first noise gatherer, shown in Fig. 4 (B), be the second noise N that is produced, play the effect that this second noise N offsets the first noise N by first audio drivers 106, then, collect the feedback noise N ' (step S303) that locates near the user with the first error inductor 105, shown in Fig. 4 (C), be the waveform of collected feedback noise N ', micro-control unit 107 is adjusted this second noise (step S302) according to the first error inductor, 105 collected feedback noise N ' again.The aforementioned second noise N continue to adjust until the collected feedback noise N ' of the first error inductor 105 less than default threshold value (shown in Fig. 5 (C)), so, can effectively improve the interference of noise to the user.
Fig. 6 is the system architecture diagram of another preferred embodiment of the present invention, Fig. 7 is applied to the enforcement synoptic diagram of computer apparatus for the active electronic system that abates the noise, as shown in the figure, electronic system has casing 101, and wherein casing 101 has an operating surface 102 for user's 109 operations.Comprise at least one first electronic component 103, at least one first noise gatherer 104, at least one first error inductor 105, at least one first audio drivers 106, micro-control unit 107, at least one second electronic component 701, at least one second noise gatherer 702, at least one second audio drivers 703 in this casing 101, reach at least one second error inductor 704.
The power supply unit fan 705 that aforementioned first electronic component 103 for example is a computer apparatus or display card fan 705 ' or cpu heat fan 705 ", it might produce discordant noise when running.The aforementioned first noise gatherer 104 for example is a microphone, and it is arranged at contiguous first electronic component 103, and is collected first noise that is produced when first electronic component 103 operates exactly.
CD-ROM drive 7011 or hard disk 7012 that aforementioned second electronic component 701 for example is a computer apparatus, it the time may produce vibration and unhappy noise is made us in initiation in running.The aforementioned second noise gatherer 702 for example is acceleration rule or a piezoelectric inductor, it is arranged at contiguous second electronic component, 701 parts, and detected the 3rd noise that is produced when second electronic component 701 operates exactly, in this embodiment, the 3rd noise is meant the low-frequency vibration noise.
The aforementioned first error inductor 105 for example is a microphone, and operating surface 102 parts that it is arranged near casing 101 perhaps are arranged in the casing 101 and contiguous operating surface 102 parts.The aforementioned second error inductor 704 for example is acceleration rule or a piezoelectric inductor, and operating surface 102 parts that it is arranged near this casing 101 perhaps are arranged in the casing 101 and contiguous operating surface 102 parts.Because general user 109 all is positioned near operating surface 102 parts,, the first error inductor 105 and the second error inductor 704 approach feedback noise and the feedback vibration that user's 109 reality are experienced so can collecting.
Aforementioned first audio drivers 106 for example is loudspeaker, and aforementioned second audio drivers 703 for example is a Vib., and aforementioned first audio drivers 106 and second audio drivers 703 can be arranged at any locus in the casing 101.
Aforementioned micro-control unit 107 is coupled to the first noise gatherer 104, the first error inductor 105, first audio drivers 106, the second noise gatherer 702, second audio drivers 703, reaches the second error inductor 704.First noise that micro-control unit 107 is collected according to the first noise gatherer 104, the 3rd noise (low-frequency vibration) that the second noise gatherer 702 is collected, the feedback noise that the first error inductor 105 is collected, and the second error inductor, 704 collected feedback noises (low frequency feedback vibration) to control first audio drivers, 106 output phases anti-phase in second noise of first noise, and micro-control unit 107 is also controlled anti-phase the 4th noise in the 3rd noise of second audio drivers, 703 output phases (being a low-frequency vibration also), to reduce the effect of former noise and vibration.In addition, micro-control unit 107 according to the collected feedback noise of the first error inductor 105, and the second error inductor, 704 collected feedback noises adjust second noise and the 4th noise, similar last embodiment is described for its adjustment mode.
The foregoing description only is to give an example for convenience of description, and the interest field that the present invention advocated should be as the criterion so that claims are described certainly, but not only limits to the foregoing description.
Claims (9)
1. an active electronic system that abates the noise is characterized in that, comprising:
One casing;
At least one first electronic component is arranged in the said machine casing;
At least one noise gatherer is arranged in the said machine casing and contiguous above-mentioned first electronic component, with
Collect one first noise that above-mentioned first electronic component is produced;
At least one audio drivers;
At least one error inductor is arranged in the said machine casing, and to collect a feedback noise, wherein above-mentioned feedback noise is different from above-mentioned first noise; And
One micro-control unit, be coupled to above-mentioned noise gatherer, tut driver, reach above-mentioned error inductor, the feedback noise that above-mentioned micro-control unit is collected according to collected first noise of above-mentioned noise gatherer and above-mentioned error inductor is controlled the tut driver and is produced one second noise of phase place in contrast to above-mentioned first noise.
2. electronic system according to claim 1 is characterized in that, wherein said machine casing has an operating surface for user's operation, and above-mentioned error inductor is arranged on contiguous aforesaid operations face part.
3. electronic system according to claim 1 is characterized in that, wherein above-mentioned noise gatherer comprises that a microphone, quickens rule or a piezoelectric inductor.
4. electronic system according to claim 1 is characterized in that, when wherein above-mentioned noise gatherer comprised acceleration rule, first noise that above-mentioned first electronic component is produced was a vibrating noise.
5. electronic system according to claim 1 is characterized in that, wherein the tut driver comprises loudspeaker or a Vib..
6. electronic system according to claim 1 is characterized in that, when wherein the tut driver comprised a Vib., second noise that above-mentioned Vib. produced was a vibrating noise.
7. electronic system according to claim 1 is characterized in that, wherein above-mentioned error inductor comprises that a microphone, quickens rule or a piezoelectric inductor.
8. electronic system according to claim 1, it is characterized in that, wherein above-mentioned micro-control unit continues to adjust above-mentioned second noise according to above-mentioned first noise and above-mentioned feedback noise, until the collected feedback noise of above-mentioned error inductor less than a default threshold value.
9. electronic system according to claim 1 is characterized in that wherein said machine casing has an operating surface, and above-mentioned error inductor is arranged in the said machine casing and contiguous aforesaid operations face part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100801495A CN101246684A (en) | 2007-02-14 | 2007-02-14 | Electric system for actively eliminating noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100801495A CN101246684A (en) | 2007-02-14 | 2007-02-14 | Electric system for actively eliminating noise |
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| Publication Number | Publication Date |
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| CN101246684A true CN101246684A (en) | 2008-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100801495A Pending CN101246684A (en) | 2007-02-14 | 2007-02-14 | Electric system for actively eliminating noise |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836006A (en) * | 2012-11-26 | 2014-06-04 | 深圳兴奇宏科技有限公司 | Noise and vibration elimination system of fan |
| CN104375362A (en) * | 2014-10-31 | 2015-02-25 | 深圳市帅映科技有限公司 | Automatic noise lowering method, device and system of projector |
| CN104571396A (en) * | 2013-10-14 | 2015-04-29 | 英业达科技有限公司 | Active fan noise control system |
| CN104952439A (en) * | 2015-05-29 | 2015-09-30 | 安庆市星博特电子科技有限公司 | Equipment noise reduction device |
| CN105872930A (en) * | 2016-03-31 | 2016-08-17 | 歌尔声学股份有限公司 | Microphone testing equipment and microphone testing method capable of reducing interference vibration |
| CN106292138A (en) * | 2015-05-20 | 2017-01-04 | 江苏宜清光电科技有限公司 | A kind of system using active noise to reduce scialyscope noise |
| WO2017028291A1 (en) * | 2015-08-20 | 2017-02-23 | 韩性峰 | Antiphase-wave muffler |
| CN107995566A (en) * | 2018-01-10 | 2018-05-04 | 湘潭大学 | A kind of automobile noise active control device |
| CN109066218A (en) * | 2018-08-15 | 2018-12-21 | 成都掩码科技有限公司 | A kind of high stable active transmission connector |
| CN109451165A (en) * | 2018-11-26 | 2019-03-08 | 努比亚技术有限公司 | Mobile terminal noise processing method, device, mobile terminal and storage medium |
| WO2020143679A1 (en) * | 2019-01-11 | 2020-07-16 | Qingdao Haier Refrigerator Co., Ltd. | Consumer appliances having one or more noise cancellation features |
| WO2022100156A1 (en) * | 2020-11-13 | 2022-05-19 | Qingdao Haier Air Conditioner General Corp., Ltd. | Noise cancellation of domestic appliance using motor control |
-
2007
- 2007-02-14 CN CNA2007100801495A patent/CN101246684A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836006A (en) * | 2012-11-26 | 2014-06-04 | 深圳兴奇宏科技有限公司 | Noise and vibration elimination system of fan |
| CN104571396A (en) * | 2013-10-14 | 2015-04-29 | 英业达科技有限公司 | Active fan noise control system |
| CN104375362A (en) * | 2014-10-31 | 2015-02-25 | 深圳市帅映科技有限公司 | Automatic noise lowering method, device and system of projector |
| CN106292138A (en) * | 2015-05-20 | 2017-01-04 | 江苏宜清光电科技有限公司 | A kind of system using active noise to reduce scialyscope noise |
| CN104952439A (en) * | 2015-05-29 | 2015-09-30 | 安庆市星博特电子科技有限公司 | Equipment noise reduction device |
| WO2017028291A1 (en) * | 2015-08-20 | 2017-02-23 | 韩性峰 | Antiphase-wave muffler |
| CN105872930A (en) * | 2016-03-31 | 2016-08-17 | 歌尔声学股份有限公司 | Microphone testing equipment and microphone testing method capable of reducing interference vibration |
| CN107995566A (en) * | 2018-01-10 | 2018-05-04 | 湘潭大学 | A kind of automobile noise active control device |
| CN109066218A (en) * | 2018-08-15 | 2018-12-21 | 成都掩码科技有限公司 | A kind of high stable active transmission connector |
| CN109066218B (en) * | 2018-08-15 | 2019-12-10 | 成都掩码科技有限公司 | High-stability active transmission joint |
| CN109451165A (en) * | 2018-11-26 | 2019-03-08 | 努比亚技术有限公司 | Mobile terminal noise processing method, device, mobile terminal and storage medium |
| WO2020143679A1 (en) * | 2019-01-11 | 2020-07-16 | Qingdao Haier Refrigerator Co., Ltd. | Consumer appliances having one or more noise cancellation features |
| CN113316815A (en) * | 2019-01-11 | 2021-08-27 | 青岛海尔电冰箱有限公司 | Consumer appliance with one or more noise cancellation features |
| WO2022100156A1 (en) * | 2020-11-13 | 2022-05-19 | Qingdao Haier Air Conditioner General Corp., Ltd. | Noise cancellation of domestic appliance using motor control |
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Open date: 20080820 |