Microphone position device and method for testing noise in automobile

A technology for noise testing and microphones, which is applied to measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc. It can solve problems such as difficult to be accurate, time-consuming and labor-intensive, and achieve high accuracy, consistent position, and high precision.

Pending Publication Date: 2020-12-01
CHANGAN MAZDA AUTOMOBILE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When installing, use a tape measure to measure the height of 70cm, and the national standard requires that it is difficult to be accurate directly above the intersection line between the seat and the backrest;
[0004] (2) The horizontal abscissa of the microphone is the center of the seat facing right (20±2) cm. For headrests of different widths, it needs to be remeasured to meet the requirements, which is time-consuming and laborious

Method used

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  • Microphone position device and method for testing noise in automobile
  • Microphone position device and method for testing noise in automobile
  • Microphone position device and method for testing noise in automobile

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Embodiment Construction

[0023] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "inner" and "outer ” refer to directions towards or away from the geometric center of a particular part, respectively.

[0024] Such as figure 1 , figure 2 As shown, a microphone position device and method for automotive interior noise testing, including a level 1, a height control rod 2, a lateral position control rod 3, a fixed rod 4 and a microphone 5, the bottom of the height control rod 2 passes through The hinge is rotatably connected with the fixed rod 4 , the top of the height control ...

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Abstract

The invention discloses a microphone position device and method for testing noise in an automobile. The device comprises a gradienter, a height control rod, a transverse position control rod, a fixedrod and a microphone, the bottom of the height control rod is rotationally connected with the fixed rod through a hinge; the top of the height control rod is connected with the transverse position control rod; the gradienter is arranged on the height control rod; the microphone is arranged on the transverse position control rod; the fixed rod is inserted into a gap between a seat cushion and a backrest; the height control rod is ensured to be located at the intersection line of the seat cushion and the backrest, the gradienter is adjusted to enable the bubbles of the gradienter to be located in the middle, the height control rod is ensured to be vertical, and the position corresponding to the transverse position control rod is a microphone test point; the device has the advantages that theoperation is simple, convenience and rapidness are realized, the microphone device point can be determined through four steps, and meanwhile, the precision is high.

Description

technical field [0001] The invention relates to the technical field of automotive noise testing, in particular to a microphone position device and method for automotive interior noise testing. Background technique [0002] In the field of GB / T 18697 Automotive Interior Noise Test, in order to check whether the noise of the car is within the specified limits, and whether there are obvious changes since the car was submitted or between different batches of submitted cars, it is necessary to test the passenger Noise value next to the ear. But there are the following problems in the specific test: [0003] (1) The vertical coordinate of the microphone is (70±5) cm above the intersection line between the surface of the seat and the backrest. When installing, use a tape measure to measure the height of 70cm, and the national standard requires that it is difficult to be accurate directly above the intersection line between the seat and the backrest; [0004] (2) The horizontal a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 张慧
Owner CHANGAN MAZDA AUTOMOBILE
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