Active control noise reduction system and method for automobile engine noise

An automotive engine, active control technology, applied in vehicle components, circuits or fluid pipelines, transportation and packaging, etc., can solve problems such as processing, mixing, and inability to perform accurate noise reduction in real time, so as to reduce engine noise and improve sound. quality effect

Inactive Publication Date: 2018-01-19
上海迪彼电子科技有限公司
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current active noise reduction technology is based on extracting the frequency information of the noise signal as the control input for the noise reduction in the car, and cannot perform real-time and accurate noise reduction effect processing
[0003] The application number is 201611087346.5, the publication date is February 08, 2017, and the patent title is "An active noise reduction device and method based on

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
  • Active control noise reduction system and method for automobile engine noise
  • Active control noise reduction system and method for automobile engine noise
  • Active control noise reduction system and method for automobile engine noise

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0035] An active control noise reduction system for automobile engine noise, which includes a vehicle information identification system, an active control sounding system and a vehicle interior environment monitoring system. The vehicle information identification system is used to receive the engine speed, door, window, temperature inside and outside the vehicle, humidity, and entertainment system signals in the CAN network communication of the vehicle, determine the vehicle status, and complete the initialization monitoring; the active control sound system is used for real-time automatic monitoring. Adapt to the control calculation, send multi-channel control signals to the car speaker system, control the speaker to send out sound waves with corre...

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 discloses an active control noise reduction system and method for automobile engine noise. The active control noise reduction system includes: a vehicle information recognition system for receiving signals of the rotation speed of an engine, vehicle doors, vehicle windows, the temperature and humidity of the interior and the exterior of the vehicle, and an entertainment system in vehicle CAN network communication, determining the state of a vehicle, and completing initial monitoring; an active control sounding system for real-time self-adaption control calculation, sending a plurality of control signals to an automobile loudspeaker system, controlling a loudspeaker to send sound waves having the corresponding frequency, phase and energy, and achieving active control noise elimination of the interior of the vehicle; a vehicle internal environment monitoring system for monitoring sound energy of all key points in the vehicle in real time, feeding a sound energy signal as aninput signal back to the active control sounding system as a reference signal, and monitoring vehicle internal noise change in real time. The active control noise reduction method is shown in description. The active control method can reduce interference of engine noise to passengers in the vehicle, and the vehicle internal sound quality of the automobile can be improved.

Description

technical field [0001] The invention relates to the technical field of active noise reduction in vehicles, in particular to an active control noise reduction system and method for automobile engine noise. Background technique [0002] The current active noise reduction technology is based on extracting the frequency information of the noise signal as the control input for the noise reduction in the car, which cannot perform real-time and accurate noise reduction effect processing. [0003] The application number is 201611087346.5, the publication date is February 08, 2017, and the patent title is "An active noise reduction device and method based on engine speed", which extracts the noise signal near the engine in the front cabin as the noise reduction frequency Input, in fact, the noise generated by various systems such as the compressor, starter motor, cooling fan, and air intake system is mixed in the front cabin. The microphone cannot automatically identify the effective...

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
IPC IPC(8): B60R16/037
Inventor 台卫华
Owner 上海迪彼电子科技有限公司
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
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap