Vehicle-inside noise indoor testing device and testing method thereof

A technology for interior noise and testing devices, which is applied in the direction of measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problem of indoor analog testing devices without interior noise, and achieve the effect of improving efficiency

Inactive Publication Date: 2017-10-24
CHANGAN UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Based on the consideration of these factors, an indoor noise test device based on road surface excitation is developed to simulate the vehicle interior noise caused by road excitation tires transmitted to the vehicle body structure vibration through the suspension system, and there is no indoor noise simulation in the car at present. Problems with the test set

Method used

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  • Vehicle-inside noise indoor testing device and testing method thereof

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Embodiment Construction

[0023] The present invention is described in further detail below in conjunction with accompanying drawing:

[0024] Such as figure 1 As shown, a kind of indoor noise test device in the car comprises a closed type test cavity 2 and a support bracket 1 for supporting the test cavity 2. The lower end of the test cavity 2 is connected with a test tire 4 through a spring support 5, and the test tire 4 A fixed pavement test piece 6 is provided below, and a sound test hole 3 for installing a sound sensor 7 is opened on the test cavity 2, and the sound sensor 7 is connected to a computer 9 through a multi-channel distributor 8.

[0025] The side of the test cavity 2 is provided with an observation window, the height of the test cavity 2 on the support frame 1 is adjustable, and the lower end of the support frame 1 is fixed on the ground; the sound sensor 7 is placed in the air through the sound test hole 3 on the test cavity 2 The cavity is used to collect the noise caused by the vi...

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Abstract

The present invention discloses a vehicle-inside noise indoor testing device and a testing method thereof. Through the arrangement of a closed testing cavity and through the use of a spring support to connect a testing tire, the device provides a way to separately study the noise in the vehicle caused by the road surface excitation, and is absent from the interference with the testing results from engine vibration, ambient noise and other external disturbances; and then, the testing tire is raised to a certain height and released to achieve impact of the road surface on the vehicle wheel and the excitation under the condition of vehicle driving. This reduces the length and workload required for the paving of an indoor road surface testing piece. The manner featuring the arrangement of the closed testing cavity and the collection of the vehicle-inside noise meets the transmission mode of the vehicle-inside noise caused by the road surface excitation. According to the invention, based on the research on the relationships of the vehicle-inside noise and the road surface paving structure and the surface texture characteristics, the main factors including the vehicle-inside noise can be determined. The device of the invention can be manufactured at a low cost, occupies small space and does not have to be paved with corresponding road surface. In addition, the testing is convenient and the result reappearance is also good.

Description

technical field [0001] The invention belongs to the technical field of road surface functional characteristic testing, and in particular relates to an indoor noise testing device and a testing method thereof. Background technique [0002] The traffic noise generated during the driving process seriously affects the ecological environment along the highway and the production and life of residents. Due to differences in population distribution, space confinement, and noise sensitivity requirements along highways, there are significant differences in the audiences affected by noise. In urban and rural road sections, the audience of traffic noise is mainly people outside the car, and its source is tire-road noise; while for road sections where roads pass through tunnels, sparsely populated, etc., the audience of noise is mainly the drivers and passengers inside the car , the source of which is the noise caused by the vibration of the body panel. With the development of the auto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 张争奇罗要飞田中男许铖王素青王佳蓉张世豪张伟黄硕磊李卓琳杨建华李杨
Owner CHANGAN UNIV
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