Sampling system for filtering noise interference in signal based on ICA

Abstract

The invention provides a sampling system for filtering noise interference in a signal based on ICA. The sampling system comprises a signal sampling and processing module and a user control module, the signal sampling and processing module comprises an FPGA control module, and the FPGA control module comprises an ICA processor taking a configurable IP core as the core; the user control module is connected with the signal sampling and processing module, and is used for sending a command to control operation of each module in the signal sampling and processing module in order to achieve data interaction with the signal sampling and processing module. According to the invention, hardware filtering with customized center frequency is combined with the ICA algorithm based on the FPGA, and a filtering and sampling system which is compact in structure, convenient to carry and high in flexibility, and is especially applied to strong noise interference in the signal is provided.

Description

technical field [0001] The invention relates to the technical field of noise processing in single-frequency signals, in particular to an ICA-based sampling system suitable for filtering noise interference in signals with strong environmental noise interference. Background technique [0002] Signal acquisition and processing in the fields of electric power and medical treatment is an indispensable link in research work, and the noise in the environment will affect the purity of the collected signal to varying degrees, especially when the environmental noise is strong, it may even cause the signal Distortion will cause great interference to the later signal analysis work. At present, there are hardware filtering and software filtering methods for filtering noise interference in single-frequency signals. Among them, the filtering effect of hardware filtering is poor, that is, the filtered signal contains high noise components, and the system's anti-interference ability is poor;...

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Problems solved by technology

[0002] Signal acquisition and processing in the fields of electric power and medical treatment is an indispensable link in research work, and the noise in the environment will affect the purity of the collected signal to varying degrees, especially when the environmental noise is strong, it may even cause the signal Distortion, causing great interference to the later signal analysis work

At present, there are hardware filtering and software filtering methods for filtering noise interference in single-frequency signals. Among them, the filtering effect of hardware filtering is poor, that is, the filtered signal contains high noise components, and the system's anti-interference ability is poor; the filtering effect of software methods Better, most of the filtering work is performed in the host computer, which is less convenient for some working conditions that require on-site operations

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