A staging method of product design process based on EEG signal

Abstract

The invention discloses a product design process staging method based on EEG signals, relates to a product design thinking process staging method based on EEG signals, and belongs to the fields of product aided design, knowledge engineering, and intelligent manufacturing. The implementation method of the present invention is as follows: select the basic rhythm wave applicable to the EEG signal in the thinking process of product design, obtain the frequency range corresponding to the basic rhythm wave, collect the EEG signal in the design process of the designer, and decompose the EEG signal by wavelet. Decompose the results and select the frequency range of the basic rhythm wave of the EEG signal to obtain the basic rhythm wave of the EEG; calculate the EEG characteristic parameters of each time window in turn to obtain the characteristic parameter points; perform aggregation based on the density peak value of the characteristic parameters of each window Class analysis to obtain the clustering results of design thinking states based on EEG signals; EEG signal staging based on the clustering results of design thinking states based on EEG signals; use EEG signal staging results to solve engineering problems.

Description

technical field [0001] The invention relates to a product design process staging method, in particular to a product design thinking process staging method based on electroencephalogram signals, belonging to the fields of product aided design, knowledge engineering and intelligent manufacturing. Background technique [0002] For the research on product design thinking, obtaining the designer's state of mind is a key step. At present, the acquisition methods of thinking state are subject to the problem of subjective factors to varying degrees. Therefore, it is very valuable to study the objective description method of design thinking. [0003] More recently, design thinking researchers have used physiological signals, such as brain electricity, to describe the product design process. The academic field has also realized that design thinking research based on EEG signals is an important theoretical research direction of design science. EEG signals are the main reflection of t...

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Problems solved by technology

[0006] Aiming at the following defects of the prior art: (1) the current acquisition methods of the state of mind have the problem that subjective factors have a large influence in varying degrees; there is a lack of an objective description method for design thinking; (2) the EEG signal has non-stationarity, Due to the characteristics of randomness, nonlinearity and low signal-to-noise ratio, it is difficult to stage the process of EEG signals; (3) for different designers, there are different product process design stages, and the existing technology cannot be used according to different designers. Individual characteristics for process staging

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