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Automobile active noise reduction method and system

An active noise reduction, automotive technology, applied to vehicle components, circuits or fluid pipelines, transportation and packaging, etc., can solve the problems of limited noise reduction and strong noise, so as to improve sound insulation, reduce noise, and improve ride quality. quality effect

Inactive Publication Date: 2016-06-15
TSINGHUA UNIV +1
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AI Technical Summary

Problems solved by technology

The above technologies are all passive noise reduction technologies, which can indeed reduce the noise decibels in the cabin, but the degree of noise reduction is limited, especially when the car is driving at high speed, the noise in the cabin is still very strong

Method used

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Embodiment Construction

[0046] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0047] see figure 1 , the embodiment of the present invention, a kind of automobile active noise reduction method, comprises:

[0048] Judging whether the current driving speed of the car exceeds a preset threshold, if yes, then perform active noise reduction, if not, then do not perform active noise reduction, wherein the preset threshold is 60 kilometers per hour, and the active noise reduction includes the following steps:

[0049] S1. Inflate the inflatable air bag preset in the car door sealing strip to improve the sound insulation of the car door;

[0050] S2. Detect the position of the person sitting in the compartment through the pressure sensor arranged in the car seat;

[0051] S3, collect the sound source in the compartment th...

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Abstract

The invention discloses an automobile active noise reduction method and system. The automobile active noise reduction method includes the steps that the sitting positions of persons in a carriage are detected through pressure sensors arranged in automobile seats; sound sources in the carriage are collected through microphones arranged at different positions in the carriage; the center region of the sitting positions of the persons in the carriage is estimated; and an automobile audio system is started for actively reducing the noise of the center region of the positions of the persons in an automobile. The automobile audio system is adopted for active noise reduction, the noise of the positions taken by the persons in the carriage is effectively reduced, and the taking quality is improved.

Description

technical field [0001] The invention relates to automobile technology, in particular to an automobile active noise reduction method and system. Background technique [0002] The noise of the car mainly comes from road noise, tire noise, wind noise and engine noise. All have high requirements. And in the prior art, the noise suppression in the automobile compartment is mainly by improving the sealing of the compartment, the shock absorption system of the chassis, the sound insulation effect of the engine compartment, and selecting silent tires. The above-mentioned technologies are all passive noise reduction technologies, which can indeed reduce the noise decibels in the cabin, but the degree of noise reduction is limited, especially when the car is running at high speed, the noise in the cabin is still very strong. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides an automobile active noise reduction method,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/037
CPCB60R16/037
Inventor 任珂陈文强刘心文郑士岑
Owner TSINGHUA UNIV
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