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Sound quality active control testing device for passenger car seat

A technology of active control and test equipment, which is applied in the direction of measurement equipment, vehicle testing, machine/structural component testing, etc., and can solve the problems that passengers cannot adjust the sound quality and cannot evaluate the sound quality active control evaluation effect, etc.

Active Publication Date: 2019-01-11
TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this system cannot realize the passenger's adjustment test on the sound quality, let alone evaluate the sound quality active control evaluation effect

Method used

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  • Sound quality active control testing device for passenger car seat
  • Sound quality active control testing device for passenger car seat
  • Sound quality active control testing device for passenger car seat

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Embodiment Construction

[0014] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are the Some embodiments of the invention are not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0015] Such as figure 1 and figure 2 As shown, a passenger car seat sound quality active control test device, the seat is installed on the floor 1 of the passenger car and the seat includes a seat body 3, a backrest 17 and a headrest 5, the backrest 17 The front end of the seat is provided with a safety belt 4, the test dummy 2 is placed on the seat, the top of the...

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Abstract

The invention provides a sound quality active control testing device for a passenger car seat. The device is characterized in that a noise source, a noise source amplifier and a primary sound source loudspeaker are used to produce noises around a testing dummy, a master control center sends a secondary sound source signal through the phase inversion principle, and the secondary sound source signalis sent to a seat belt loudspeaker, a left headrest loudspeaker and a right headrest loudspeaker through a secondary source low-pass filter, a secondary source amplifier and a secondary source loudspeaker interface, so that the noises around the testing dummy on the seat can be eliminated, and active noise control can be achieved; and errors of the active noise control algorithm are sent by a seat belt error microphone and a headrest error microphone through an error microphone control interface, an error microphone amplifier and an error microphone low-pass filter to the master control center for correction, and the master control center achieves active noise control testing and evaluation through an evaluation microphone interface, a right ear evaluation microphone and a left ear evaluation microphone.

Description

technical field [0001] The invention belongs to the technical field of noise reduction for passenger cars, and in particular relates to an active control test device for sound quality of passenger car seats. Background technique [0002] The interior noise of passenger cars mainly comes from the construction noise of engines and other machinery, the road noise caused by the friction between tires and the ground, the dryness caused by the friction between the car and the air, and the noise introduced into the car from the outside. These noises will affect the competition of car brands, and even affect people's health. In the existing control technology in the car, passive noise reduction methods such as vibration reduction and sound-absorbing materials are mostly used. Recently, some people have proposed active noise reduction in the car. For example, the patent application number CN201810022206. The device uses an active control method to realize the reduction of stable noi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007
CPCG01M17/007Y02T90/00
Inventor 赵海军关志伟李洪亮顾灿松翟乃斌陈达亮梁凯张玉书王志强
Owner TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
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