Electroencephalogram signal collecting, processing and controlling device

Abstract

The invention discloses an electroencephalogram signal collecting, processing and controlling device. The device comprises a signal collecting and transmitting module, a first-level amplification module, an AD conversion module, a first-level filtering module, a second-level amplification module, a second-level filtering module, a microcomputer module, a signal outputing module and a battery pack. The first-lever filtering module receives a digital signal output by the AD conversion module and conducts first-level filtering operation, wherein the first-level filtering operation comprises high-pass filtering and low-pass filtering; second-level filtering operation is band-pass filtering; the microcomputer module controls the first-level filtering module and the second-level filtering module to conduct the first-level filtering operation and the second-level filtering operation respectively; the signal outputting module receives multichannel digital signals output by the second-level filtering module and obtained after second-level filtering, and outputs or stores the multichannel digital signals. By means of the device, two-level filtering treatment can be directly conducted at a hardware end without depending on software, and subsequently, filtering is not needed any more, so that the operation difficulty is reduced, and meanwhile the processing efficiency is improved.

Description

technical field [0001] The invention relates to the field of EEG signal acquisition, in particular to an EEG signal acquisition and processing control device. Background technique [0002] EEG signals contain a lot of available information, and there is also a lot of redundancy. In order to extract useful information, it is necessary to amplify, AD convert, and filter the collected EEG signals. At present, for filtering processing, most of them are digital filtering controlled by software, which has high professional requirements for operators. Therefore, it is necessary to provide an EEG signal acquisition and processing control device that is easy to operate and has excellent performance. Contents of the invention [0003] It is an object of the present invention to solve at least the above-mentioned problems and to provide at least the advantages which will be described later. [0004] Another object of the present invention is to provide a control device for collectin...

AI Technical Summary

Problems solved by technology

At present, for filtering processing, most of them are digital filtering controlled by software, which has high professional requirements for operators. Therefore, it is necessary to provide an EEG signal acquisition and processing control device that is easy to operate and has excellent performance.

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