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Variable matrix sound positioning system and positioning method

A technology of sound positioning and matrix, applied in the field of vehicle detection

Inactive Publication Date: 2020-02-04
BAIC MOTOR CORP LTD
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  • Abstract
  • Description
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Problems solved by technology

[0006] In order to solve the problems existing in the prior art, the present invention provides a device that can locate the abnormal sound of the chassis when vehicles of different sizes are in motion

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  • Variable matrix sound positioning system and positioning method
  • Variable matrix sound positioning system and positioning method
  • Variable matrix sound positioning system and positioning method

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Embodiment Construction

[0039] Hereinafter, preferred embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although the drawings show preferred embodiments of the present disclosure, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0040] In the present invention, laser ranging is used to locate the acoustic sensor with reference laser ranging to establish the coordinate origin of the three-dimensional virtual space, and the position of each acoustic sensor is calibrated through the laser ranging function of each sensor. The data processing device establishes a virtual detection matrix according to the calibration result.

[0041] Because the farther t...

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Abstract

The invention provides a variable matrix sound positioning system and a positioning method. The variable matrix sound positioning system comprises a plurality of sound sensors, a data processing device and a plurality of data transmission lines with equal lengths, wherein the plurality of sound sensors are used for constructing a three-dimensional coordinate system and picking up sound data; the data processing device is used for constructing the three-dimensional coordinate system based on the positions of the plurality of sensors, marking the position of each sensor in the three-dimensionalcoordinate system, receiving the sound data picked up by the sound sensors, calculating the distance between a sound source and each sound sensor, and calculating the position of the sound source in the three-dimensional coordinate system based on the position data of each sensor; and each data transmission line is connected between each sound sensor and the data processing device. Compared with some acoustic cameras or stethoscopes, the positioning system provided by the invention can arrange a detection matrix according to the will of a user or a use site, is not limited by the application environment, and can meet the positioning of abnormal sound sources in a chassis and a cabin of a vehicle in the running process.

Description

Technical field [0001] The invention relates to the field of vehicle detection, in particular to a variable matrix sound positioning system and a positioning method. Background technique [0002] There are many parts and components involved in automobile products, and the environment in which the vehicle is used is harsh. Therefore, some parts of the chassis often make abnormal noises when the automobile is used for a period of time, which affects the driving or riding experience of the driver and passengers. The structure of the chassis components is complex and the noise level is different under different working conditions. It is difficult to lock which components are caused by the noise problem. Therefore, engineers cannot quickly solve the noise problem by optimizing the structure or replacing the components. [0003] The sound localization method in the prior art generally uses a combination of acoustic imaging and optical imaging to assist in finding the sound source. For ex...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/20
CPCG01S5/20
Inventor 莫怡帆单庆祝
Owner BAIC MOTOR CORP LTD
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