Vehicle chassis noise problem source positioning system and positioning method

A source positioning and chassis technology, applied in radio wave measurement systems, re-radiation, measurement devices, etc., can solve the problems of high price and complex structure, and achieve the effects of low cost, simple structure and strong practicability

Inactive Publication Date: 2019-05-03
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent includes a microphone array, an optical camera, an angle sensor, a data recording unit, an authentication device, and a computer, etc., and the structure is complex and expensive

Method used

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  • Vehicle chassis noise problem source positioning system and positioning method
  • Vehicle chassis noise problem source positioning system and positioning method
  • Vehicle chassis noise problem source positioning system and positioning method

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Embodiment Construction

[0025] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0026] The present invention aims to solve the problem that the source of the vehicle chassis noise is difficult to locate precisely. One is the determination of several noise problem sources with the largest noise in the vehicle chassis, and the other is the determination of the noise problem source on the vehicle chassis that has the greatest impact on the side of the vehicle. . The main idea is to measure the sound intensity on multiple lines respectively for the length and width of the vehicle. The measurement principle is to measure the sound intensity on one line by the movement of the microphone as a point relative to the vehicle chassis. The grid of sound intensity is formed by the superposition of the intensity line and the sound intensity line in the width direction, that is, the grid arrangement of the sound intensity, which is realized throug...

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Abstract

The invention relates to a vehicle chassis noise problem source positioning system and positioning method. The method is characterized in that the relative movement of a chassis sound pickup row formed by more than two chassis sound pickups arranged side by side in the width direction of a vehicle body relative to a vehicle chassis directly above in the vehicle length direction is acquired to detect sound intensity of each part of the vehicle chassis, and the noise problem source location of the vehicle chassis is determined by a data processor based on the value picked up by the chassis soundpickup row and vehicle length and width values inputted previously. The method is advantaged in that sound intensity distribution of the vehicle chassis can be detected through the chassis sound pickup row formed by more than two chassis sound pickups arranged side by side in the width direction of the vehicle body in cooperation with the data processor, the noise problem source location of the vehicle chassis is determined in combination with the vehicle length and width values inputted previously into the data processor, an acoustics camera in the prior art is replaced, not only the structure is simple, but also cost is quite low, and practicality is strong.

Description

technical field [0001] The invention relates to a vehicle chassis noise problem source location system and location method. Background technique [0002] In the process of new development of automobile products, some parts of the chassis often have too much noise, which affects the driving or riding experience of the driver and passengers, and the noise source on the chassis will also cause great harm to pedestrians on the side of the vehicle. Hazards, affecting the comfort of pedestrians or other vehicles or residential areas, and the positions of the two noise sources sometimes do not overlap, and the structure of the chassis components is complex and the noise level under different working conditions is not the same, it is difficult to determine which components are responsible Therefore, engineers cannot quickly solve the noise problem by optimizing the structure or replacing parts. In the prior art, the way to assist in determining the noise source is generally to assi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S11/14
Inventor 齐伸翼邓世林郜盼盼穆浩李良宋佳纹
Owner ZHENGZHOU YUTONG BUS CO LTD
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