Regional personalized automobile active noise control system

Abstract

The invention discloses a regional personalized automobile active noise control system, and relates to an automobile active noise control technology. The system comprises an engine rotating speed sensor, a master control unit, a mobile interaction module, a plurality of regional sub-control units, and a microphone preamplifier, a microphone, a seat left loudspeaker, a seat right loudspeaker, a left power amplifier and a right power amplifier which are matched with each regional sub-control unit. The mobile interaction module is used for selecting required control effect modes for different seat passengers in a vehicle, the master control unit determines the control order and the target amplitude of the head area of each seat according to the effect mode requirements of each passenger, andthe regional sub-control units execute the order control scheme of the master control unit to generate control signals of the loudspeakers of each seat. The regional personalized automobile active noise control system can realize various optional control effects in the head area of each seat and meet the personalized sound requirements of different passengers in the vehicle.

Description

technical field [0001] The invention relates to an automobile active noise control technology, and provides an automobile active noise control system capable of realizing various optional control effects in the head area of ​​each seat and meeting the personalized sound needs of different occupants in the vehicle. Background technique [0002] Vehicle interior noise control technology can be divided into passive control and active control. Passive noise control mainly adopts the method of installing sound insulation and sound absorption materials on the car. The noise reduction frequency band is limited, and to a certain extent, it increases the quality of the car and increases the energy consumption of the car. In the 1990s, people began to develop the Active Noise Control (ANC) system in the car. This technology has the advantages of wide control frequency band, small mass, flexible layout, and targeted control. Currently, it is used in some high-end models (mostly Passen...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the defect that the existing centralized ANC has a single control effect and cannot satisfy the voice preferences of different seat occupants in the car at the same time, an ANC system with a distributed control architecture is provided. The engine sound is the control object, and the total control unit is based on Different sound mode requirements of different seat occupants in the car, real-time determination of the control order numbers and their target amplitudes of each area, the regional sub-control unit executes the order control scheme of the general control unit, and obtains sound patterns at different seat positions in the car Different Active Control Effects

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