Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Automobile active noise reduction and audio power amplification integrated system

An audio power and active noise reduction technology, applied in transmission systems, digital transmission systems, sound-generating devices, etc., can solve problems such as engine noise reduction, increased vehicle weight, and inability to reduce road noise, so as to reduce the development cycle and improve flexibility , Road noise reduction effect

Pending Publication Date: 2021-11-23
ZHEJIANG GEELY HLDG GRP CO LTD +1
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional methods to deal with the internal noise of automobiles are mechanical methods, such as optimizing the structure of the car body, adding shock-absorbing and sound-absorbing materials, and using noise-reducing tires, etc. These methods are costly, have a long development cycle, and will increase the weight of the car body, so the effect is relatively limited
On the basis of mechanical processing, there are active noise reduction technologies that control the speakers in the car. However, most active noise reduction is mainly to reduce engine noise and cannot reduce road noise.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Automobile active noise reduction and audio power amplification integrated system
  • Automobile active noise reduction and audio power amplification integrated system
  • Automobile active noise reduction and audio power amplification integrated system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029] The invention relates to an integrated system of automobile active noise reduction and audio frequency power amplification. The system realizes the automobile active noise reduction function and the audio frequency power amplification function simultaneously by designing a set of systems. The active noise reduction function of the car includes the engine noise reduction function and the road noise reduction function. Engine noise refers to the noise transmitted to the interior of the car when the engine is running; road noise refers to the noise transmitted to the interior of the vehicle through the tires when the vehicle is moving on the road.

[0030] figure 1 Block diagram of an integrated system for automotive active noise reduction and audio power amplification, according to figure 1 As shown, the system of the present invention mainly includes:

[0031] 1. Main control chip and auxiliary circuits (such as power supply circuit, memory, debugging circuit, etc.); ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an automobile active noise reduction and audio power amplification integrated system which comprises a main control chip, two A2B buses, an auxiliary circuit, a communication bus and an audio power amplification circuit, the main control chip is connected with the auxiliary circuit, the two A2B buses, the audio power amplification circuit and the communication bus, one A2B bus is connected with a microphone with the A2B bus, the other A2B bus is connected with the vibration sensor with the A2B bus, the communication bus is connected with a vehicle-mounted CAN signal and used for obtaining an engine rotating speed signal and a vehicle window opening signal, the microphone with the A2B bus collects a sound wave signal in a vehicle, the vibration sensor with the A2B bus obtains a vehicle vibration signal, and the main control chip performs engine noise reduction, road noise reduction and audio signal power amplification based on a vehicle-mounted CAN signal, an in-vehicle sound wave signal and an automobile vibration signal. Compared with the prior art, the system has the advantages of reduced overall cost, reduced weight and the like.

Description

technical field [0001] The invention relates to the technical field of automobile noise reduction, in particular to an integrated system of automobile active noise reduction and audio power amplification. Background technique [0002] With the development of the automobile industry and the improvement of people's living standards, consumers have higher and higher requirements for the noise inside the car. The traditional methods to deal with the internal noise of automobiles are mechanical methods, such as optimizing the structure of the car body, adding shock-absorbing and sound-absorbing materials, and using noise-reducing tires. On the basis of mechanical processing, there are active noise reduction technologies that control the speakers in the car. However, most active noise reduction is mainly to reduce engine noise and cannot reduce road noise. Contents of the invention [0003] The purpose of the present invention is to provide an integrated system of automobile ac...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/178G10K11/175H04L12/40
CPCG10K11/178G10K11/175H04L12/40H04L2012/40215
Inventor 陈卢华陈泽凯谢凯陈志东周昌水顾鹏云
Owner ZHEJIANG GEELY HLDG GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products