CN114694625A - Noise reduction method for vehicle - Google Patents
Noise reduction method for vehicle Download PDFInfo
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- CN114694625A CN114694625A CN202011598914.4A CN202011598914A CN114694625A CN 114694625 A CN114694625 A CN 114694625A CN 202011598914 A CN202011598914 A CN 202011598914A CN 114694625 A CN114694625 A CN 114694625A
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- 230000009467 reduction Effects 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000007613 environmental effect Effects 0.000 claims description 4
- 241001465754 Metazoa Species 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 230000005236 sound signal Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005259 measurement 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
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
-
- 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
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1783—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions
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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
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1785—Methods, e.g. algorithms; Devices
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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
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/128—Vehicles
- G10K2210/1282—Automobiles
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The application discloses a noise reduction method for a vehicle, comprising at least the following steps: s1: uploading vehicle information, road information, nearby vehicle information, obstacle information and environment information to a star chain system; s2: the star link system calculates real-time sound field and sound pressure information around the vehicle according to the vehicle information, the road information, the nearby vehicle information, the obstacle information and the environment information; s3: and the vehicle takes noise reduction measures according to sound pressure information of the sound field. According to the noise reduction method, the precision of sound pressure of a sound field around the vehicle can be improved, and a precondition is provided for subsequent noise reduction measures, so that the noise reduction effect of the vehicle is better.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a noise reduction method for a vehicle.
Background
In the related art, a noise reduction mode of a vehicle is to collect an original sound signal at a predetermined position on the vehicle, amplify and invert the original sound signal to generate an inverted signal corresponding to the original sound signal, gain the inverted signal, and send the inverted signal after the gain processing to the position where the original sound signal is collected for playing.
However, in the prior art, only the original sound information at the preset position is collected, and the sound signals around the vehicle cannot be collected in an omnibearing and real-time manner; the sound information acquisition equipment is a microphone module and is influenced by factors such as distance and other noises.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a noise reduction method for a vehicle, which can improve the accuracy of calculating sound pressure of a sound field around the vehicle, provide preconditions for subsequent noise reduction measures, and make the noise reduction effect of the vehicle better.
The noise reduction method for a vehicle according to the present application comprises at least the steps of: s1: uploading vehicle information, road information, nearby vehicle information, obstacle information and environment information to a star chain system; s2: the star link system calculates real-time sound field and sound pressure information around the vehicle according to the vehicle information, the road information, the nearby vehicle information, the obstacle information and the environment information; s3: and the vehicle takes noise reduction measures according to sound pressure information of the sound field.
According to the noise reduction method for the vehicle, the collected sound information comprises the information of the vehicle, and the influence of comprehensive factors such as vehicle exhaust, surrounding vehicles, road morphology, other obstacles, thunderstorm and the like on a sound field around the vehicle.
According to one embodiment of the present application, the vehicle information includes: the apparent size of the vehicle, the vehicle speed, and the location of the vehicle.
According to one embodiment of the present application, the vehicle information further includes: exhaust information and window opening information of the vehicle.
According to one embodiment of the present application, the road information includes: the type of road, the gradient of the road, and the friction of the vehicle with the road.
According to one embodiment of the present application, the nearby vehicle information includes: the speed of the nearby vehicle, the location of the nearby vehicle relative to the host vehicle, and the apparent size of the nearby vehicle.
According to one embodiment of the present application, the obstacle information includes: pedestrians, animals and deceleration strips.
According to one embodiment of the present application, the environment information includes: wind field information, rainfall information.
According to one embodiment of the application, the vehicle changes the surface structure of the vehicle according to sound field sound pressure information to realize noise reduction.
According to one embodiment of the application, the vehicle transmits reverse sound waves according to sound field sound pressure information to perform active noise reduction.
According to one embodiment of the present application, a distance between a vehicle and an obstacle is acquired and a time of collision of the vehicle with the obstacle is calculated, corresponding noise data is acquired from a preset noise database and an inverted noise signal is played when the vehicle collides with the obstacle.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart of a noise reduction method according to the present application;
fig. 2 is another flowchart of a noise reduction method according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A noise reduction method for a vehicle according to an embodiment of the present invention is described below with reference to fig. 1 and 2.
The noise reduction method for a vehicle according to the present invention comprises at least the steps of:
s1: uploading vehicle information, road information, nearby vehicle information, obstacle information and environment information to a star chain system;
s2: the star link system calculates real-time sound field and sound pressure information around the vehicle according to the vehicle information, the road information, the nearby vehicle information, the obstacle information and the environment information;
s3: and the vehicle acquires noise reduction measures according to sound pressure information of the sound field.
That is to say, the noise reduction method for the vehicle of the present invention can collect more comprehensive sound source and sound field information, and compared with the information collected in the prior art, the noise reduction method for the vehicle of the present invention is more extensive, and not only includes the information of the vehicle itself, but also can collect road information and the information of nearby vehicles, and in addition, the environmental information around the vehicle can also be collected, so that not only can the sound field and sound pressure around the vehicle be calculated in real time, but also the noise source that the vehicle will encounter can be predicted, the sound source with reversed phase can be calculated in advance, and the noise reduction method can also be dealt with in advance after the sudden noise is encountered.
According to the noise reduction method for the vehicle, the collected sound information comprises the information of the vehicle, and the influence of comprehensive factors such as vehicle exhaust, surrounding vehicles, road morphology, other obstacles, thunderstorm and the like on a sound field around the vehicle.
In some embodiments of the invention, the vehicle information includes an apparent size of the vehicle, a vehicle speed, and a location of the vehicle. The appearance size, the speed and the position of the vehicle can influence the sound field around the vehicle, the vehicle information is uploaded to a star chain system, the precision of calculating the sound pressure of the sound field around the vehicle can be improved, and a precondition is provided for subsequent noise reduction measures, so that the noise reduction effect of the vehicle is better.
Needless to say, the vehicle information according to the present invention is not limited to the external dimensions of the vehicle, the vehicle speed, and the position of the vehicle, and the vehicle information is not specifically limited in the present invention.
Further, the vehicle information further includes: exhaust information and window opening information of the vehicle. The exhaust information of the vehicle and the opening degree of the vehicle window can influence the direction of the intensity of the noise obtained in the vehicle, so that the exhaust information of the vehicle and the opening degree information of the vehicle window are uploaded to the star chain system, the precision of calculating sound pressure of a sound field around the vehicle can be improved, a precondition is provided for subsequent noise reduction measures, and the noise reduction effect of the vehicle is better.
In some embodiments of the invention, the road information includes a type of the road, a gradient of the road, and a friction of the road. The type of road and the gradient of the road affect the road noise between the vehicle and the ground, and the friction between the vehicle and the road can also affect the road noise of the vehicle. It is clear that at the same speed, road noise generated by vehicles on asphalt roads is less than road noise generated on stone roads. The type of the road, the gradient of the road and the friction force of the road are uploaded to the star link system, so that the precision of calculating sound field sound pressure around the vehicle can be improved, preconditions are provided for subsequent noise reduction measures, and the noise reduction effect of the vehicle is better.
Of course, it is to be understood that the road information of the present invention is not limited to the type of road, the gradient of the road, and the frictional force of the vehicle and the road, and the present invention is not particularly limited to the road information.
In some embodiments of the present invention, inverting the nearby vehicle information includes: the speed of the nearby vehicle, the location of the nearby vehicle relative to the host vehicle, and the apparent size of the nearby vehicle. The information of nearby vehicles is uploaded to the star chain system, so that the precision of calculating sound pressure of a sound field around the current vehicle can be improved, preconditions are provided for subsequent noise reduction measures, and the noise reduction effect of the vehicle is better.
In some embodiments of the invention, the obstacle information includes pedestrians, animals, speed bumps, and the like. Obstacles include objects that are about to collide with or otherwise obstruct the progress of the vehicle. For example, when a deceleration strip is in front of the vehicle, the star chain can calculate the distance between the vehicle and the deceleration strip in front of the vehicle and the time when the vehicle reaches the deceleration strip, then obtain the noise data when the vehicle passes through the deceleration strip from the noise database and play the inverted noise signal when the vehicle passes through the deceleration strip, thereby achieving the effect of active noise reduction.
In some embodiments of the invention, the environmental information includes wind field information, rainfall information and the like, and the wind field information and the rainfall information are uploaded to the star link system, so that the precision of calculating sound pressure of a sound field around the vehicle can be further improved, and a precondition is provided for subsequent noise reduction measures, so that the noise reduction effect of the vehicle is better.
According to some embodiments of the present invention, the vehicle may change a surface structure of the vehicle according to the sound field sound pressure information to achieve noise reduction. That is, the main cause of noise generation is found out through a star chain system, and then the surface structure of the vehicle is changed according to the main cause to realize noise reduction, and the noise reduction method is mainly used for the case that the noise source is single.
In other embodiments of the present invention, the vehicle actively reduces noise by generating an inverted sound wave based on sound pressure information of the sound field. Therefore, positive-phase sound waves and reverse-phase sound waves are superposed to realize active noise reduction, and the noise reduction mode can deal with the condition that a plurality of noise sources exist.
Further, the noise reduction method of the present invention further includes: the method comprises the steps of obtaining the distance between a vehicle and an obstacle, calculating the time of collision between the vehicle and the obstacle, obtaining corresponding noise data from a preset noise database, and playing an opposite-phase noise signal when the vehicle collides with the obstacle.
When the automobile runs, acquiring a real-time image of the front road surface of the automobile, and identifying and obtaining obstacles existing on the front road surface; when the obstacle existing on the front road surface is identified and obtained, the obstacle is measured, and the distance between the automobile and the obstacle is obtained through measurement; after real-time driving data of the automobile are obtained, calculating time information of noise generated by contact and impact of wheels and obstacles, and reading corresponding noise data from a preset noise database; generating a corresponding reverse phase noise signal according to the read noise data; according to the time information, when the wheels drive to the obstacle and contact and impact with the obstacle, the anti-phase noise signal is played at the bottom of the automobile, so that the purpose of actively reducing noise is achieved.
It should be noted that the road information, the vehicle information, the nearby vehicle information, the obstacle information, and the like in the present invention may be acquired by a navigation system (e.g., a beidou navigation system) and uploaded to the star link system. Environmental information, such as wind field information, rainfall information and the like, can be uploaded to the star-chain system by a meteorological cloud platform. The star-chain system obtains real-time noise sound pressure around the vehicle through quantum calculation according to the received parameter information of the vehicle and the surrounding environment parameters, and real-time noise sound pressure information such as wind noise, raindrop noise, noise when an obstacle collides and the like can be obtained.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A noise reduction method for a vehicle, characterized by comprising at least the steps of:
s1: uploading vehicle information, road information, nearby vehicle information, obstacle information and environment information to a star chain system;
s2: the star link system calculates real-time sound field and sound pressure information around the vehicle according to the vehicle information, the road information, the nearby vehicle information, the obstacle information and the environment information;
s3: and the vehicle takes noise reduction measures according to sound pressure information of the sound field.
2. The noise reduction method for a vehicle according to claim 1, wherein the vehicle information includes: the apparent size of the vehicle, the vehicle speed, and the location of the vehicle.
3. The noise reduction method for a vehicle according to claim 2, wherein the vehicle information further includes: exhaust information and window opening information of the vehicle.
4. The noise reduction method for a vehicle according to claim 1, wherein the road information includes: the type of road, the gradient of the road, and the friction of the vehicle with the road.
5. The noise reduction method for a vehicle according to claim 1, wherein the nearby vehicle information includes: the speed of the nearby vehicle, the location of the nearby vehicle relative to the host vehicle, and the apparent size of the nearby vehicle.
6. The noise reduction method for a vehicle according to claim 1, wherein the obstacle information includes: pedestrians, animals and deceleration strips.
7. The noise reduction method for a vehicle according to claim 1, wherein the environmental information includes: wind field information, rainfall information.
8. The noise reduction method for a vehicle according to claim 1, wherein the vehicle changes a surface structure of the vehicle according to sound field sound pressure information to achieve noise reduction.
9. The noise reduction method for a vehicle according to claim 1, wherein the vehicle actively reduces noise by emitting reverse sound waves in accordance with sound field sound pressure information.
10. The noise reduction method for a vehicle according to claim 9, wherein the distance between the vehicle and the obstacle is acquired and the time of collision of the vehicle with the obstacle is calculated, and the corresponding noise data is acquired from a preset noise database and an inverted noise signal is played when the vehicle collides with the obstacle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011598914.4A CN114694625A (en) | 2020-12-29 | 2020-12-29 | Noise reduction method for vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011598914.4A CN114694625A (en) | 2020-12-29 | 2020-12-29 | Noise reduction method for vehicle |
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| CN114694625A true CN114694625A (en) | 2022-07-01 |
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| CN202011598914.4A Pending CN114694625A (en) | 2020-12-29 | 2020-12-29 | Noise reduction method for vehicle |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086034A (en) * | 2016-11-03 | 2017-08-22 | 北京安声科技有限公司 | A kind of vehicle-mounted active noise reduction system and method |
| CN109065014A (en) * | 2018-07-13 | 2018-12-21 | 广州小鹏汽车科技有限公司 | A kind of automobile active denoising method, system and device |
| CN110223669A (en) * | 2019-07-01 | 2019-09-10 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Processing method, the device and system of car noise |
| CN110310618A (en) * | 2019-06-05 | 2019-10-08 | 广州小鹏汽车科技有限公司 | Processing method, processing unit and the vehicle of vehicle running environment sound |
| CN111261134A (en) * | 2018-11-30 | 2020-06-09 | 上汽通用汽车有限公司 | Noise reduction method and system for vehicle road noise |
| CN111754968A (en) * | 2020-06-15 | 2020-10-09 | 中科上声（苏州）电子有限公司 | Wind noise control method and device for vehicle |
-
2020
- 2020-12-29 CN CN202011598914.4A patent/CN114694625A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086034A (en) * | 2016-11-03 | 2017-08-22 | 北京安声科技有限公司 | A kind of vehicle-mounted active noise reduction system and method |
| CN109065014A (en) * | 2018-07-13 | 2018-12-21 | 广州小鹏汽车科技有限公司 | A kind of automobile active denoising method, system and device |
| CN111261134A (en) * | 2018-11-30 | 2020-06-09 | 上汽通用汽车有限公司 | Noise reduction method and system for vehicle road noise |
| CN110310618A (en) * | 2019-06-05 | 2019-10-08 | 广州小鹏汽车科技有限公司 | Processing method, processing unit and the vehicle of vehicle running environment sound |
| CN110223669A (en) * | 2019-07-01 | 2019-09-10 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Processing method, the device and system of car noise |
| CN111754968A (en) * | 2020-06-15 | 2020-10-09 | 中科上声（苏州）电子有限公司 | Wind noise control method and device for vehicle |
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