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Collecting system and method for detecting human body electroencephalogram signals

A technology of EEG signal and human body detection, which is applied in telemetry patient monitoring, application, diagnostic recording/measurement, etc. It can solve the problems of complex analog front end of the circuit, low signal-to-noise ratio, and inability to extract useful signals, etc., and achieves a simplified acquisition method , good application prospects, and the effect of improving anti-interference ability

Inactive Publication Date: 2018-06-01
SHENZHEN BETTERLIFE ELECTRONICS SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The analog front end of the above circuit is complex, prone to unstable factors, and easy to couple the power frequency signal to the useful signal, resulting in a signal-to-noise ratio that is too low to extract the useful signal

Method used

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  • Collecting system and method for detecting human body electroencephalogram signals
  • Collecting system and method for detecting human body electroencephalogram signals
  • Collecting system and method for detecting human body electroencephalogram signals

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Embodiment Construction

[0024] The present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.

[0025] The invention discloses an acquisition system for detecting human brain electrical signals, please refer to figure 2 , which includes:

[0026] EEG signal acquisition device 100, used to sense human brain waves and output electrical signals;

[0027] The analog front end 101 is electrically connected to the EEG signal acquisition device 100, and the analog front end 101 is used to receive the electrical signal output by the EEG signal acquisition device 100;

[0028] The central processing unit 102 is electrically connected to the analog front end 101, and the central processing unit 102 is used to process the electrical signal connected to the analog front end 101 and output result data;

[0029] The bluetooth module 103 is electrically connected to the central processing unit 102, and the bluetooth module 103 is used to wirelessly sen...

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Abstract

The invention discloses a collecting system for detecting human body electroencephalogram signals. The system comprises an electroencephalogram signal collecting device for inducting human body brainwaves and outputting electric signals, an analog front end electrically connected to the electroencephalogram signal collecting device, and used for receiving the electric signals output by the electroencephalogram signal collecting device, a central processing unit electrically connected to the analog front end and used for processing the electric signals accessed by the analog front end and thenoutputting result data, a Bluetooth module electrically connected to the central processing unit and used for sending out the result data output by the central processing unit wirelessly, and an upper computer wirelessly connected to the Bluetooth module and used for receiving and displaying the result data sent by the Bluetooth module. The system has the advantages being small and portable, andis high in anti-jamming capability, simplified in structure and good in reliability.

Description

technical field [0001] The invention relates to the technical field of EEG signal acquisition and processing, in particular to an acquisition system and method for detecting human EEG signals. Background technique [0002] In the prior art, common EEG measurement methods are constructed by separating devices, please refer to figure 1 , using instrument op amp + bandpass filter + notch filter + high precision ADC + MCU + PC mode, wherein, instrument op amp: a special differential amplifier with ultra-high input impedance, extremely good CMRR, low input bias Shift, low output impedance, can amplify those signals under the common mode voltage. Each channel signal requires an instrumentation op amp. PGA: Programmable gain amplifier (programmable gain amplifier, PGA), its magnification can be controlled by the program according to the need. Using this amplifier, the magnification can be adjusted through the program, so that the full-scale signal of the A / D converter can be uni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0476
CPCA61B5/0006A61B5/002A61B5/369
Inventor 杨尚宾
Owner SHENZHEN BETTERLIFE ELECTRONICS SCI & TECH