CN108231054B - Noise reduction system for production line - Google Patents
Noise reduction system for production line Download PDFInfo
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- CN108231054B CN108231054B CN201711438019.4A CN201711438019A CN108231054B CN 108231054 B CN108231054 B CN 108231054B CN 201711438019 A CN201711438019 A CN 201711438019A CN 108231054 B CN108231054 B CN 108231054B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 238000010521 absorption reaction Methods 0.000 claims abstract description 37
- 230000005236 sound signal Effects 0.000 claims description 28
- 239000000758 substrate Substances 0.000 claims description 22
- 230000003044 adaptive effect Effects 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 7
- 239000002023 wood Substances 0.000 claims description 3
- 239000004753 textile Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000002496 gastric effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
- G10K11/168—Plural layers of different materials, e.g. sandwiches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
- B32B2307/102—Insulating
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L2021/02087—Noise filtering the noise being separate speech, e.g. cocktail party
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Computational Linguistics (AREA)
- Quality & Reliability (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a noise reduction system for a production line, which comprises a noise reduction and sound absorption cover for isolating production links of the production line, wherein the noise reduction and sound absorption cover is made of a noise reduction plate, a sound acquisition module, a processing control module, a first self-adaptive filter, a second self-adaptive filter and a loudspeaker are arranged inside the noise reduction and sound absorption cover, a sound output module is arranged outside the noise reduction and sound absorption cover, the processing control module is respectively and electrically connected with the sound acquisition module, the first self-adaptive filter, the second self-adaptive filter, the loudspeaker and the sound output module, and the loudspeaker is close to a main sound source of the production link; the invention combines the passive noise reduction and the active noise reduction, thereby greatly reducing the noise of the production line.
Description
Technical Field
The invention belongs to the technical field of mechanical noise reduction, and particularly relates to a noise reduction system for a production line.
Background
Textile machinery is various mechanical equipment required for processing natural fibers or chemical fibers into textiles; the textile machinery inevitably generates noise during the use process; mechanical noise is great in most workshops of textile factories, particularly weaving workshops, and researches show that long-term work in a noise environment can cause damage to hearing, heart vessels, mental systems, gastrointestinal ability, memory and the like; currently, noise reduction methods usually employ earplugs for operators, but these measures cannot well eliminate noise, still cause harm to the body of the machine operator, and are inconvenient to work.
Disclosure of Invention
In view of the above, the present invention provides a noise reduction system for a production line, which reduces noise superposition by isolating each production link of the production line through a noise reduction and sound absorption cover; the noise reduction and sound absorption cover is made of a noise reduction plate and is used for passive noise reduction; the sound collection module collects sound signals in the noise reduction sound absorption cover, the processing control module carries out operation processing on the sound signals, a second adaptive filter filters separated human sound signals in the sound signals and separates noise signals, and the processing control module calculates reverse sine waves for eliminating noise according to the noise signals, so that active noise reduction is realized; the combination of passive noise reduction and active noise reduction greatly reduces the noise of the production line.
In order to achieve the purpose, the noise reduction system for the production line comprises a noise reduction and sound absorption cover for isolating production links of the production line, wherein the noise reduction and sound absorption cover is made of a noise reduction plate, a sound acquisition module, a processing control module, a first self-adaptive filter, a second self-adaptive filter and a loudspeaker are arranged inside the noise reduction and sound absorption cover, a sound output module is arranged outside the noise reduction and sound absorption cover, the processing control module is respectively and electrically connected with the sound acquisition module, the first self-adaptive filter, the second self-adaptive filter, the loudspeaker and the sound output module, and the loudspeaker is close to a main sound source of the production links; the sound collection module is used for collecting sound signals in the noise reduction and sound absorption cover; the processing control module is used for carrying out operation processing on the sound signals; the first adaptive filter is used for filtering noise signals in the sound signals and separating out the human sound signals; the second self-adaptive filter is used for filtering out human voice signals in the voice signals, separating out noise signals, and the processing control module calculates the inverse sine waves for eliminating the noise according to the noise signals; a speaker for emitting a counter-sine wave; and the sound output module is used for outputting the human voice signal.
Furthermore, the noise reduction plate is composed of a first layer of substrate, a second layer of sound insulation layer and a third layer of substrate which are sequentially overlapped, and the first layer of substrate, the second layer of sound insulation layer and the third layer of substrate are sequentially bonded.
Further, the second sound insulation layer is a rubber layer, and the first layer substrate and the third layer substrate are both wood boards.
The invention has the beneficial effects that:
1. the noise reduction system for the production line is used in combination of passive noise reduction and active noise reduction, so that the noise of the production line is greatly reduced; the sound collection module collects sound signals in the noise reduction sound absorption cover, the processing control module carries out operation processing on the sound signals, a second adaptive filter filters separated human sound signals in the sound signals and separates noise signals, and the processing control module calculates reverse sine waves for eliminating noise according to the noise signals, so that active noise reduction is realized; after active noise reduction, the noise in the noise reduction and sound absorption cover is greatly reduced, and the noise reduction and sound absorption cover is made of a noise reduction plate, so that sound insulation is conveniently realized, and passive noise reduction is carried out; on the other hand, after the noise in the noise reduction and sound absorption cover is greatly reduced, the noise reduction requirement on the noise reduction plate is reduced, and the cost of the noise reduction plate is convenient to reduce.
2. According to the noise reduction system for the production line, disclosed by the invention, the noise signals in the sound signals are filtered by the first self-adaptive filter, the human sound signals are separated out, and the human sound signals are output to the outside of the noise reduction and sound absorption cover through the sound output module, so that the sound of workers in the noise reduction and sound absorption cover is transmitted out, and the work requirements of the workers in the noise reduction and sound absorption cover are conveniently transmitted to the outside.
3. The noise reduction plate of the noise reduction system for the production line is composed of a first layer of base plate, a second layer of sound insulation layer and a third layer of base plate which are sequentially overlapped, and is simple in structure, low in cost and capable of meeting use requirements.
Drawings
In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
FIG. 1 is a schematic diagram of a noise reduction system for a production line according to the present invention;
reference numerals: 1-noise reduction and sound absorption cover; 2-a sound collection module; 3-processing the control module; 4-a first adaptive filter; 5-a second adaptive filter; 6-a loudspeaker; 7-a sound output module; 11-a first layer of substrate; 12-a second sound-insulating layer; 13-third layer substrate.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1; the invention relates to a noise reduction system for a production line, which comprises a noise reduction and sound absorption cover 1 for isolating production links of the production line.
The noise reduction and sound absorption cover 1 is made of a noise reduction plate, preferably, the noise reduction plate is composed of a first layer substrate 11, a second layer sound insulation layer 12 and a third layer substrate 13 which are sequentially stacked, the first layer substrate 11, the second layer sound insulation layer 12 and the third layer substrate 13 are sequentially bonded, on the basis, the second layer sound insulation layer 12 is a rubber layer, and the first layer substrate 11 and the third layer substrate 13 are both wood plates.
A sound collection module 2, a processing control module 3, a first adaptive filter 4, a second adaptive filter 5 and a loudspeaker 6 are arranged in the noise reduction and sound absorption cover 1; the noise reduction and sound absorption cover 1 is externally provided with a sound output module 7, the processing control module 3 is respectively and electrically connected with the sound collection module 2, the first adaptive filter 4, the second adaptive filter 5, the loudspeaker 6 and the sound output module 7, the loudspeaker 6 is close to a main sound source of a production link, and the main sound source refers to an operating mechanism which emits large noise, such as a driving motor; the sound collection module 2 is used for collecting sound signals in the noise reduction and sound absorption cover 1; the processing control module 3 is used for carrying out operation processing on the sound signals; the first adaptive filter 4 is used for filtering noise signals in the sound signals and separating out human sound signals; the second adaptive filter 5 is used for filtering out human voice signals in the voice signals, separating out noise signals, and the processing control module 3 calculates the inverse sine waves for eliminating the noise according to the noise signals; a speaker 6 for emitting an inverse sine wave; and the sound output module 7 is used for outputting a human sound signal.
The principle of the present embodiment: collecting sound signals in the noise reduction and sound absorption cover 1 through a sound collection module 2; after the sound signal is operated and processed by the processing control module 3, the sound signal is respectively transmitted to the first adaptive filter 4 and the second adaptive filter 5; noise signals in the sound signals are filtered through the first adaptive filter 4, voice signals are separated, the voice signals are processed through the processing control module 3 and then output to the outside of the noise reduction sound absorption cover 1 through the sound output module 7, the work requirements of workers in the noise reduction sound absorption cover 1 are clearly transmitted to the outside, and stable operation of a production line is guaranteed; filtering out a separated human voice signal in the voice signal through a second self-adaptive filter 5, separating out a noise signal, calculating a reverse sine wave for eliminating noise according to the noise signal by a processing control module 3, and sending the reverse sine wave to a main sound source through a loudspeaker 6, so as to realize active noise reduction; after active noise reduction, the noise in the noise reduction and sound absorption cover 1 is greatly reduced, and the noise reduction and sound absorption cover 1 is made of a noise reduction plate, so that sound insulation is conveniently realized, and passive noise reduction is carried out; meanwhile, after the noise in the noise reduction and sound absorption cover 1 is greatly reduced, the noise reduction requirement on the noise reduction plate is reduced, on the other hand, each production link of a production line is isolated through the noise reduction and sound absorption cover 1, the superposition of the noise is reduced, and the noise reduction requirement of the noise reduction plate is further reduced, so that the used noise reduction plate is composed of a first layer substrate 11, a second layer sound insulation layer 12 and a third layer substrate 13 which are sequentially superposed, the use requirement can be met, the manufacturing is simple, and the material cost and the manufacturing cost of the noise reduction plate are reduced conveniently.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (1)
1. A noise reduction system for a production line, characterized by: the system comprises a noise reduction and sound absorption cover for isolating production links of a production line, wherein the noise reduction and sound absorption cover is made of a noise reduction plate, a sound acquisition module, a processing control module, a first self-adaptive filter, a second self-adaptive filter and a loudspeaker are arranged in the noise reduction and sound absorption cover, a sound output module is arranged outside the noise reduction and sound absorption cover, the processing control module is respectively and electrically connected with the sound acquisition module, the first self-adaptive filter, the second self-adaptive filter, the loudspeaker and the sound output module, and the loudspeaker is close to a main sound source of the production links;
the sound collection module is used for collecting sound signals in the noise reduction and sound absorption cover;
the processing control module is used for carrying out operation processing on the sound signals;
the first adaptive filter is used for filtering noise signals in the sound signals and separating out the human sound signals;
the second self-adaptive filter is used for filtering out human voice signals in the voice signals, separating out noise signals, and the processing control module calculates the inverse sine waves for eliminating the noise according to the noise signals;
a speaker for emitting a counter-sine wave;
the voice output module is used for outputting a human voice signal;
the noise reduction plate consists of a first layer of substrate, a second layer of sound insulation layer and a third layer of substrate which are sequentially superposed, and the first layer of substrate, the second layer of sound insulation layer and the third layer of substrate are sequentially bonded;
the second sound insulation layer is a rubber layer, and the first layer substrate and the third layer substrate are both wood boards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711438019.4A CN108231054B (en) | 2017-12-26 | 2017-12-26 | Noise reduction system for production line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711438019.4A CN108231054B (en) | 2017-12-26 | 2017-12-26 | Noise reduction system for production line |
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| CN108231054A CN108231054A (en) | 2018-06-29 |
| CN108231054B true CN108231054B (en) | 2021-05-14 |
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| CN201711438019.4A Active CN108231054B (en) | 2017-12-26 | 2017-12-26 | Noise reduction system for production line |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207276A (en) * | 2019-07-16 | 2019-09-06 | 上海应用技术大学 | Noise gathering analysis and active noise reduction system and method for air-conditioner outdoor unit group |
| CN111583898B (en) * | 2020-05-26 | 2021-06-29 | 苏州双福智能科技有限公司 | Space environment multi-directional selective noise reduction system and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101901601A (en) * | 2010-05-17 | 2010-12-01 | 天津大学 | Method and system for reducing noise of voice communication in vehicle |
| CN106098052A (en) * | 2016-06-01 | 2016-11-09 | 东华大学 | A kind of textile machine is against sound noise-reduction method |
| CN106443531A (en) * | 2016-12-05 | 2017-02-22 | 苏州朗润医疗系统有限公司 | Compound noise reducing device and method of compound noise reducing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9117457B2 (en) * | 2013-02-28 | 2015-08-25 | Signal Processing, Inc. | Compact plug-in noise cancellation device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101901601A (en) * | 2010-05-17 | 2010-12-01 | 天津大学 | Method and system for reducing noise of voice communication in vehicle |
| CN106098052A (en) * | 2016-06-01 | 2016-11-09 | 东华大学 | A kind of textile machine is against sound noise-reduction method |
| CN106443531A (en) * | 2016-12-05 | 2017-02-22 | 苏州朗润医疗系统有限公司 | Compound noise reducing device and method of compound noise reducing |
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