CN110136685B - Noise control implementation method based on vehicle-to-vehicle communication - Google Patents
Noise control implementation method based on vehicle-to-vehicle communication Download PDFInfo
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- CN110136685B CN110136685B CN201910462581.3A CN201910462581A CN110136685B CN 110136685 B CN110136685 B CN 110136685B CN 201910462581 A CN201910462581 A CN 201910462581A CN 110136685 B CN110136685 B CN 110136685B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/037—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for occupant comfort, e.g. for automatic adjustment of appliances according to personal settings, e.g. seats, mirrors, steering wheel
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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
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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
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Abstract
The invention relates to the field of automobile noise control, and provides a noise control implementation method based on vehicle-to-vehicle communication aiming at the problem of poor noise control effect, which comprises the following steps: a single noise contribution amount calculation step of acquiring noise source signals of all external vehicles and calculating a single noise contribution amount of the noise source signal of each external vehicle to the noise in the vehicle; a total noise contribution amount calculation step of acquiring single noise contribution amounts of all external vehicles to the noise in the vehicle, and calculating the total noise contribution amount of the external vehicles to the noise in the vehicle according to all the single noise contribution amounts; and an active noise reduction step, namely acquiring the total noise contribution of the external vehicle, calculating to obtain an anti-noise source signal according to the total noise contribution of the external vehicle, and overlapping the anti-noise source signal and the total noise contribution to control a noise source signal of the external vehicle. The invention can solve the problem of poor noise control effect of the existing noise control method.
Description
Technical Field
The invention relates to the field of automobile noise control, in particular to a noise control implementation method based on automobile-automobile communication.
Background
NVH is an English abbreviation of Noise, Vibration and Harshness (Noise, Vibration, Harshness), which is a comprehensive problem for measuring automobile manufacturing quality, the NVH problem of the automobile is one of the concerns of various whole automobile manufacturing enterprises and component enterprises in the international automobile industry, the failure problem of about 1/3 of the whole automobile is related to the NVH problem of the automobile, nearly 20% of research and development cost of various companies is consumed in solving the NVH problem of the automobile, and the performance requirements of the automobile market on the NVH are increasingly strict. With the rapid development of automobile technology, people put higher and higher requirements on the driving comfort of automobiles.
For noise reduction of an automobile, a chinese patent with publication number CN105667432B discloses an automobile active noise reduction method and system, the automobile active noise reduction method includes: detecting the position of a person in a carriage through a pressure sensor arranged in an automobile seat; collecting sound sources in the carriage through microphones arranged at different positions in the carriage; estimating a central area of a position where a person in the carriage sits; and starting the automobile sound system, and actively reducing noise of a central area where the personnel in the automobile are located.
In the scheme, an automobile sound system is adopted for active noise reduction, but when the method collects control noise, the noise of the automobile is taken as a control source, the influence of an external automobile on the noise in the automobile is not considered, and the influence of the external noise source on the noise in the automobile is large and cannot be ignored, so that the existing noise control method has the problems of inaccurate noise calculation and poor noise control effect.
Disclosure of Invention
The invention aims to provide a noise control implementation method based on vehicle-to-vehicle communication, which can solve the problem of poor noise control effect of the existing noise control method.
The basic scheme provided by the invention is as follows: a noise control implementation method based on vehicle-to-vehicle communication comprises the following steps:
a total noise contribution amount calculation step of acquiring single noise contribution amounts of all external vehicles to the noise in the vehicle, and calculating the total noise contribution amount of the external vehicles to the noise in the vehicle according to all the single noise contribution amounts;
and an active noise reduction step, namely acquiring the total noise contribution of the external vehicle, calculating to obtain an anti-noise source signal according to the total noise contribution of the external vehicle, and overlapping the anti-noise source signal and the total noise contribution to control a noise source signal of the external vehicle.
The invention has the beneficial effects that: 1) according to the scheme, the influence of the external vehicle on the noise in the vehicle is considered through the calculation of the noise contribution amount of the external vehicle, and the accuracy of the calculation of the noise in the vehicle can be improved; 2) the noise source signal of the external vehicle can be well eliminated through the superposition of the anti-noise source signal and the noise contribution of the external vehicle, and the influence of the noise of the external vehicle on the noise in the vehicle can be avoided and weakened.
The scheme can solve the problem of poor noise control effect of the existing noise control method.
Further, the anti-noise source signal in the active noise reduction step is in opposite phase to the total noise contribution of the external vehicle.
Has the advantages that: the anti-noise source signal and the noise contribution quantity with opposite phases can be superposed, and the noise contribution quantity of the external vehicle is favorably eliminated.
Further, the anti-noise source signal in the active noise reduction step has the same amplitude and frequency as the total noise contribution of the external vehicle.
Has the advantages that: the anti-noise source signal and the noise contribution quantity with the same amplitude and frequency ensure that the amplitude and the frequency of the original noise are basically unchanged after the noise contribution quantity of the external vehicle is superposed and eliminated, and the driving experience of a driver is favorably improved.
Further, the method further comprises: and a single noise contribution amount calculation step of acquiring the noise source signals of all the external vehicles and calculating a single noise contribution amount of the noise source signal of each external vehicle to the in-vehicle noise.
Has the advantages that: the subsequent calculation of the noise contribution amount is facilitated by the calculation of the noise contribution amount of the single outside vehicle.
Further, the single noise contribution amount calculation step includes: and a noise source and data acquisition substep of acquiring noise source signals and characteristic data of all external vehicles.
Further, the characteristic data of the external vehicle in the noise source and data acquisition substep includes position information data, motion velocity data, acceleration data, amplitude data, and frequency data.
Has the advantages that: from the position information data, the movement velocity data, the acceleration data, the amplitude data, and the frequency data, the noise transfer function of the outside vehicle can be calculated, which is advantageous for calculating the noise contribution amount of the individual outside vehicles and the total noise contribution amount of the outside vehicles.
Further, the single noise contribution calculating step further includes: and a noise contribution amount calculation sub-step of calculating a noise transfer function of the outside vehicle from the characteristic data, and calculating a single noise contribution amount of the outside vehicle from the noise transfer function.
Has the advantages that: the single noise contribution amount is calculated according to the noise transfer function of the external vehicle, so that the accurate and real-time noise contribution amount of the external vehicle can be obtained, and the noise of the external vehicle can be eliminated.
Further, the calculation formula of the individual noise contribution amounts in the noise contribution amount calculation sub-step is xi＝Xi*Hi，XiAs a noise source signal of an external vehicle, HiAs a noise transfer function of the outside vehicle.
Further, the calculation formula of the total noise contribution amount in the total noise contribution amount calculation step is X (n) ═ Σ Xi*Hi，i＝1，2，3...，XiAs a noise source signal of an external vehicle, HiAs a noise transfer function of the outside vehicle.
Further, the anti-noise source signal in the active noise reduction step may be emitted by a plurality of devices.
Has the advantages that: the plurality of devices can control the noise in the vehicle from different angles, and the control effect of the noise in the vehicle is favorably improved.
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FIG. 1 is a logic diagram of a noise control implementation method according to a first embodiment;
fig. 2 is a logic block diagram of a sub-step of step S1 in the second embodiment.
Detailed Description
The following is further detailed by the specific embodiments:
the first embodiment is as follows:
as shown in fig. 1: a noise control implementation method based on vehicle-to-vehicle communication comprises the following steps:
s1: and a single noise contribution amount calculation step of acquiring the noise source signals of all the external vehicles and calculating a single noise contribution amount of the noise source signal of each external vehicle to the in-vehicle noise.
S2: and a total noise contribution amount calculation step of acquiring single noise contribution amounts of all the external vehicles to the in-vehicle noise, and calculating the total noise contribution amount of the external vehicles to the in-vehicle noise according to all the single noise contribution amounts.
The formula for calculating the total contribution of the external vehicle to the noise in the vehicle is as follows: x (n) ═ Σ Xi*Hi1, 2, 3, wherein XiAs a noise source signal of an external vehicle, HiAs a noise transfer function of the outside vehicle.
S3: and an active noise reduction step, namely acquiring the total noise contribution of the external vehicle, calculating to obtain an anti-noise source signal according to the total noise contribution of the external vehicle, and overlapping the anti-noise source signal and the total noise contribution to control a noise source signal of the external vehicle.
In the present embodiment, the in-vehicle noise amount of the host vehicle is Y (where Y ═ Y)0+x(n),Y0The noise amount generated by the vehicle is collected by a noise collecting device arranged on the vehicle; x (n) is the contribution of the outside vehicle, X (n) ═ Σ Xi*Hi，i＝1，2，3...，XiAs a noise source signal of an external vehicle, HiA noise transfer function for an outside vehicle); analyzing the frequency and amplitude of the noise contribution of the external vehicle through an active control algorithm, and then controlling the active sound generating device to generate an anti-noise source signal y (n) (y (n)) with opposite amplitude and frequency but opposite phase with the noise contribution X (n) of the external vehicle in real timei*Hi) The control of the noise of the external vehicle is achieved by the superposition of the anti-noise source signal y (n) and the noise contribution x (n) of the external vehicle.
Example two:
in this embodiment, the step S1 further includes two substeps.
As shown in fig. 2: s1: the single noise contribution amount calculating step includes:
s101: a noise source and data acquisition substep of acquiring noise source signals of all external vehicles and characteristic data of the external vehicles. The characteristic data of the external vehicle includes position information data, motion speed data, acceleration data, amplitude data, and frequency data. In this embodiment, install car real-time interaction data device in this car, all install noise signal collection system, car positioner, speed acquisition device, acceleration acquisition device, noise analysis device and car real-time interaction data device on all outside vehicles. The noise signal acquisition device is used for acquiring a noise source signal of an external vehicle; the vehicle positioning device is used for acquiring position information data of the external vehicle, and the speed acquisition device is used for acquiring movement speed data of the external vehicle; the acceleration acquisition device is used for acquiring acceleration data of an external vehicle; the noise analysis device is used for analyzing frequency data and amplitude data of an external vehicle noise source signal. The vehicle-to-vehicle real-time interaction data device in the vehicle is used for finishing data interaction with the vehicle-to-vehicle real-time interaction data device of the external vehicle, so that position information data, movement speed data, acceleration data, amplitude data and frequency data of the external vehicle can be directly acquired in the vehicle.
S102: and a noise contribution amount calculation sub-step of calculating a noise transfer function of the outside vehicle from the characteristic data, and calculating a single noise contribution amount of the outside vehicle from the noise transfer function.
In the present embodiment, the calculation formula of the individual noise contribution amount of the outside vehicle is xi＝Xi*HiWherein X isiAs a noise source signal of an external vehicle, HiAs a noise transfer function of the outside vehicle. The transfer function is calculated from the position information data, the movement velocity data, the acceleration data, the amplitude data, and the frequency data of the external vehicle, and in this embodiment, the transfer function is calculated by lms.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. A noise control implementation method based on vehicle-to-vehicle communication is characterized by comprising the following steps:
a total noise contribution amount calculation step of acquiring single noise contribution amounts of all external vehicles to the noise in the vehicle, and calculating the total noise contribution amount of the external vehicles to the noise in the vehicle according to all the single noise contribution amounts;
an active noise reduction step, namely acquiring the total noise contribution of the external vehicle, calculating to obtain an anti-noise source signal according to the total noise contribution of the external vehicle, and overlapping the anti-noise source signal and the total noise contribution to control a noise source signal of the external vehicle;
wherein, a car real-time interaction data device is arranged in the car, and a noise signal acquisition device, a car positioning device, a speed acquisition device, an acceleration acquisition device, a noise analysis device and a car real-time interaction data device are arranged on all external cars.
2. The car-to-car communication-based noise control implementation method according to claim 1, characterized in that: the anti-noise source signal in the active noise reduction step is in phase opposition to the total noise contribution of the external vehicle.
3. The car-to-car communication-based noise control implementation method according to claim 2, characterized in that: the anti-noise source signal in the active noise reduction step is the same in magnitude and frequency as the total noise contribution of the external vehicle.
4. The method for implementing noise control based on vehicle-to-vehicle communication according to claim 1, further comprising:
and a single noise contribution amount calculation step of acquiring the noise source signals of all the external vehicles and calculating a single noise contribution amount of the noise source signal of each external vehicle to the in-vehicle noise.
5. The car-to-car communication-based noise control implementation method according to claim 4, wherein the individual noise contribution amount calculation step includes:
and a noise source and data acquisition substep of acquiring noise source signals and characteristic data of all external vehicles.
6. The car-to-car communication-based noise control implementation method according to claim 5, characterized in that: the characteristic data in the noise source and data acquisition sub-step includes position information data, motion velocity data, acceleration data, amplitude data, and frequency data.
7. The car-to-car communication-based noise control implementation method according to claim 5, wherein the individual noise contribution amount calculation step further includes:
and a noise contribution amount calculation sub-step of calculating a noise transfer function of the outside vehicle from the characteristic data, and calculating a single noise contribution amount of the outside vehicle from the noise transfer function.
8. The car-to-car communication-based noise control implementation method of claim 7, wherein: the calculation formula of the single noise contribution in the noise contribution calculating sub-step is xi＝Xi*Hi，XiAs a noise source signal of an external vehicle, HiAs a noise transfer function of the outside vehicle.
9. The car-to-car communication-based noise control implementation method according to claim 1, characterized in that: the calculation formula of the total noise contribution amount in the total noise contribution amount calculation step is X (n) ═ Σ Xi*Hi，i＝1，2，3...，XiAs a noise source signal of an external vehicle, HiAs a noise transfer function of the outside vehicle.
10. The car-to-car communication-based noise control implementation method according to claim 1, characterized in that: the anti-noise source signal in the active noise reduction step may be emitted by a plurality of devices.
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| CN112098939B (en) * | 2020-09-18 | 2021-09-24 | 广东电网有限责任公司电力科学研究院 | Method and device for identifying and evaluating noise pollution source |
| CN112508289B (en) * | 2020-12-14 | 2023-04-07 | 潍柴动力股份有限公司 | Method and system for calculating noise contribution of vehicle subsystem |
| CN115217696B (en) * | 2022-07-01 | 2024-03-01 | 奇瑞汽车股份有限公司 | Noise control method, device and vehicle manufacturing method |
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| CN105473988A (en) * | 2013-06-21 | 2016-04-06 | 布鲁尔及凯尔声音及振动测量公司 | Method of determining noise sound contributions of noise sources of a motorized vehicle |
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