A digital integrated circuit for single-channel EEG signal denoising
An EEG signal and integrated circuit technology, which is applied in the field of EEG signal denoising, to achieve the effect of reducing the impact
Active Publication Date: 2020-05-22
XI AN JIAOTONG UNIV +1
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However, there is no report on the application of Wavelet-ICA to single-channel EEG signal denoising using integrated circuit technology.
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[0023] The present invention will be described in further detail below in conjunction with accompanying drawing:
[0024] see figure 1 , The present invention is a digital integrated circuit for single-channel EEG signal denoising, comprising a single-stage wavelet transform circuit module, an average value removal circuit module, a whitening circuit module, and an iterative separation circuit module. The data type of the input signal Input of the single-channel EEG signal denoising digital integrated circuit is 16-bit fixed-point number. Among them, the integer part is 8 bits, and the fractional part is 8 bits. The single-channel EEG signal Input first passes through the single-stage wavelet transform circuit module to generate a two-dimensional signal X, and X is processed by the mean-removing circuit module to obtain a two-dimensional zero-mean signal After being processed by the whitening circuit module, a two-dimensional whitening signal Z is obtained, and Z is proce...
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The invention discloses an integrated circuit for single -channel brain electrical signal noise, including a single -level wavelet transformation circuit module, a moral value circuit module, an albinomable circuit module, and iterated separate circuit modules.Single -channel brain electrical signals containing other human biological signals generate a two -dimensional signal after a single -level wavelet change circuit module, and then transform these two -dimensional signals through the de -average circuit module to a two -dimensional 0 average signal, and then the two -dimensional 10 average signal passes through the passing of the two -dimensional 0 average signal passed through the pass through the pass.The processing circuit of the Xiefang differential matrix in the albino circuit module, the EVD decomposition circuit, the three circuit modules of the albin signal generation circuit convert the transformation to the albin signal.Then separate the pure brain electrical signal from the noise signal through the separation circuit.The present invention can separate the biological signals mixed in the interference and electrical signals and the original brain electrical signal to achieve the purpose of de -no -noise.
Description
technical field [0001] The present invention relates to a technology in the field of EEG signal denoising, in particular to an integrated circuit for removing interference from other human biological signals in a single-channel EEG signal. Background technique [0002] EEG signal is an electrical signal sent by the brain, which is the overall reflection of the electrophysiological activity of brain nerve cells on the surface of the cerebral cortex or scalp. EEG signals contain a large amount of physiological and disease information, which can provide diagnostic basis for some brain diseases in clinical medicine. Electroencephalography has the advantages of non-invasiveness and rapidity, which makes it the most commonly used clinical detection method for brain diseases. EEG research has become a popular research direction in recent years. Relevant research attempts to clarify the internal structure, division of labor and working principles of the brain. However, the current ...
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IPC IPC(8): G06K9/00A61B5/0476A61B5/04
CPCA61B5/7203A61B5/30A61B5/316A61B5/369G06F2218/06
Inventor 李尊朝郑闯冯立琛王元发曾彩剑
Owner XI AN JIAOTONG UNIV