Method and device for active noise reduction of vehicle

Abstract

The invention provides a method and device for active noise reduction of a vehicle. The method comprises the following steps: arranging sensors at the positions of noise sources, and collecting real-time noise signal data of each of the noise sources of the vehicle; performing spectral analyses on the real-time noise signal data so as to obtain spectral characteristic information corresponding to each of the noise sources; collecting a noise signal in a driving cabin, and performing the spectral analysis on the noise signal so as to obtain spectral distribution information of noise in the driving cabin; comparing the spectral distribution information with the spectral characteristic information so as to obtain relativity information of the noise in the driving cabin and the noise sources; transmitting a cancellation acoustical signal at a target position in the driving cabin through a loudspeaker according to the relativity information, and enabling waveform cancellation to be formed by the cancellation acoustical signal and the noise of the noise sources. Through the adoption of the method and the device which are disclosed by the invention, the active noise reduction of a driving space and a riding space of the vehicle can be realized.

Description

technical field [0001] The invention relates to automobile noise reduction technology, in particular to a method and device for active noise reduction of a vehicle. Background technique [0002] With the development of science and technology, cars are becoming more and more intelligent, and car passengers have higher requirements for the comfort and safety of vehicles. [0003] In order to improve the comfort and safety of vehicle driving, it is necessary to reduce the impact of vehicle noise on drivers and passengers. The methods for reducing the noise in the cab of vehicles in the prior art are mostly through physical partition and reducing the energy of noise sources. Although passive noise reduction has certain effects, due to limited technology, the noise of noise sources can no longer be significantly reduced, and there are no new effective physical isolation measures. [0004] Therefore, how to further reduce the noise in the vehicle on the basis of the existing phys...

AI Technical Summary

Problems solved by technology

[0003] In order to improve the comfort and safety of vehicle driving, it is necessary to reduce the impact of vehicle noise on drivers and passengers. The methods for reducing the noise in the cab of vehicles in the prior art are mostly through physical partition and reducing the energy of noise sources. Although passive noise reduction has certain effects, due to limited technology, the noise of noise sources can no longer be significantly reduced, and there are no new effective physical isolation measures.

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