Method and device for determining position of intermittent low-frequency sound problem in vehicle

A technique for intermittent, interior noise in vehicles

Pending Publication Date: 2022-07-01
VOYAH AUTOMOBILE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above problems, the present invention is proposed in order to provide a method and device for determining the location of the intermittent low-frequency sound problem in a vehicle that overcomes the above problems or at least partially solves the above problems

Method used

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  • Method and device for determining position of intermittent low-frequency sound problem in vehicle
  • Method and device for determining position of intermittent low-frequency sound problem in vehicle
  • Method and device for determining position of intermittent low-frequency sound problem in vehicle

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Embodiment 1

[0050] Embodiments of the present invention provide a method for determining the location of an intermittent low-frequency sound problem in a vehicle, such as figure 1 shown, including:

[0051] S101, acquiring an interior noise signal and an exterior vibration signal under a preset working condition;

[0052] S102, determining the occurrence time period of the low-frequency sound problem based on the noise signal in the vehicle;

[0053] S103, processing the in-vehicle noise signal within the occurrence time period to obtain a first frequency characteristic of the in-vehicle noise signal;

[0054] S104, process the vibration signal outside the vehicle within the occurrence time, and determine the second frequency characteristic of each component outside the vehicle;

[0055] S105, based on the first frequency characteristic and the second frequency characteristic, determine the location of the low-frequency sound problem.

[0056] First, according to the analysis idea of ​...

Embodiment 2

[0088] Based on the same inventive concept, the embodiments of the present invention provide a device for determining the location of the intermittent low-frequency sound problem in a vehicle, such as Figure 8 shown, including:

[0089] an acquisition module 801, configured to acquire the noise signal inside the vehicle and the vibration signal outside the vehicle;

[0090] a first determining module 802, configured to determine the occurrence time of the low-frequency sound problem based on the in-vehicle noise signal;

[0091] The second determining module 803 is configured to process the in-vehicle noise signal within the occurrence time, and determine the first frequency characteristic of the in-vehicle noise signal;

[0092] The third determining module 804 is configured to process the vibration signal outside the vehicle within the occurrence time, and determine the second frequency characteristic of each component outside the vehicle;

[0093] The fourth determinatio...

Embodiment 3

[0103]Based on the same inventive concept, an embodiment of the present invention provides a computer device, such as Figure 9 As shown, it includes a memory 904, a processor 902, and a computer program stored in the memory 904 and running on the processor 902. When the processor 902 executes the program, the above-mentioned determination of the location of the intermittent low-frequency sound problem in the vehicle is realized. steps of the method.

[0104] Among them, in Figure 9 In the bus architecture (represented by bus 900 ), which may include any number of interconnected buses and bridges, bus 900 will include one or more processors represented by processor 902 and various types of memory represented by memory 904 circuits are linked together. The bus 900 may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. Bu...

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Abstract

The invention relates to the technical field of vehicles, in particular to a method and device for determining the position of an in-vehicle intermittent low-frequency sound problem, and the method comprises the steps: obtaining an in-vehicle noise signal and an out-vehicle vibration signal; determining occurrence time of a low-frequency sound problem based on the in-vehicle noise signal; processing the in-vehicle noise west signal within the occurrence time to obtain a first frequency characteristic of the in-vehicle noise signal; processing the vibration signal outside the vehicle within the occurrence time, and determining a second frequency characteristic of each part outside the vehicle; based on the first frequency characteristic and the second frequency characteristic, the position where the low-frequency sound problem is located is determined, then the in-vehicle noise signals and the out-vehicle vibration signals are combined, analysis is carried out from the two angles of time domain and frequency, time domain intermittency and randomness of excitation and response and the frequency spectrum characteristic of the vibration noise problem of the frequency domain are comprehensively analyzed together, and the accuracy and accuracy of the analysis result are improved. And key influence factors causing the low-frequency sound problem are effectively determined.

Description

technical field [0001] The invention relates to the technical field of vehicles, and in particular, to a method and a device for determining the location of an interstitial low-frequency sound problem in a vehicle. Background technique [0002] During the high-speed driving of the vehicle, the small-amplitude, intermittent and random excitation caused by the slight unevenness of the road surface results in the intermittent low-frequency sound problem in the vehicle. How to determine the location of the low-frequency sound problem? The traditional analysis method It is based on the analysis of the noise inside the vehicle at a uniform speed, and the time-domain average self-power spectrum is often used to analyze the problem. [0003] However, for the time-domain randomness of the in-vehicle response, the capture is not accurate and sensitive enough, and in the transmission analysis of the vibration path, the corresponding relationship between the noise occurrence time and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 杨蒙孙作奎张紫广张永仁董光华
Owner VOYAH AUTOMOBILE TECH CO LTD
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