Noise online diagnosis and sound quality evaluating method and system based on wireless-connected and portable client

A portable client and quality evaluation technology, which is applied in the measurement of ultrasonic/sonic/infrasonic waves, biological neural network models, instruments, etc., can solve the problems of lack of mature cases, and achieve adaptability and stability, good calculation accuracy, Easy to use effects

Pending Publication Date: 2018-11-30
HUNAN UNIV
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Problems solved by technology

The research on remote automotive diagnosis and the development of corresponding technologies are mainly focused on the detection of specific components, the construction of the overal

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  • Noise online diagnosis and sound quality evaluating method and system based on wireless-connected and portable client
  • Noise online diagnosis and sound quality evaluating method and system based on wireless-connected and portable client
  • Noise online diagnosis and sound quality evaluating method and system based on wireless-connected and portable client

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Embodiment Construction

[0032] A method and system for online noise diagnosis and sound quality evaluation based on wireless interconnection and portable client

[0033] 1. Online analysis and diagnosis of noise data based on wireless interconnection and expert database

[0034]The first is to research and develop the two parts of signal characteristic analysis and diagnosis database. In the signal feature analysis, since the feature extraction of the static signal can be obtained by a simple method in the segment, the main content is to analyze and extract the feature of the dynamic noise signal. When the real-time information obtained by the remote portable client indicates that the vehicle is under dynamic changes such as acceleration, the time-varying dynamic signal changes with one or several changes in frequency, time, order, etc., and different changes correspond to different analysis methods such as Order analysis method, time-frequency joint method, wavelet analysis method, Hilbert-Huang tr...

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Abstract

The invention provides a noise online diagnosis and sound quality evaluating method and a system based on a wireless-connected and portable client. The patent of the invention is provided on the basisof testing and analyzing noise in a vehicle. The method comprises the following steps: firstly developing an in-vehicle wireless-connected system, building a real-time information flow related to noise diagnosis evaluation, transmitting to a terminal and acquiring a signal feature of an energy entropy; based on the portable client, extracting a sound quality objective parameter and building an adaptive neural network compensation model, self-defining a neural network structure, enabling an error compensation model to have better operational precision, and guaranteeing adaptability and stability of each working condition of the model at the same time, wherein the model uses a software technology to replace a huge hardware system of a professional testing system (an artificial head) for compensation, and is low in cost, and convenient and rapid to use; and finally, combining online and offline sound quality subjective and objective evaluation data based on targeted preference, and building a whole system and a standard of the in-vehicle sound quality evaluation by using a fuzzy comprehensive evaluating method.

Description

technical field [0001] The patent of the present invention relates to the field of sound quality of noise testing technology, and specifically relates to a method and system for online noise diagnosis and sound quality evaluation, which can diagnose the noise level in the car online and evaluate the sound quality. Background technique [0002] With the development of industry in modern society, new technologies, new means and new methods in the automobile industry are constantly being introduced. The noise inside the car is an important factor that affects the comfort of drivers and passengers, the degree of hearing impairment, the intelligibility of speech, and the ability to identify various sound signals outside the car. The acoustic quality of the car interior has become an important decision factor that affects customers' purchase of models. How to comprehensively obtain the evaluation index of vehicle interior noise is a research hotspot at this stage. [0003] The c...

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Application Information

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IPC IPC(8): G06F17/50G01H17/00G06N3/06
CPCG06N3/061G01H17/00G06F2119/10G06F30/20
Inventor 谢小平范文超马志远陈丙安周浩
Owner HUNAN UNIV
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