Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
권호 표지

A Study on mobile based EEG display and device development

모바일기반으로한 EEG표시 및 장치개발에 관한 연구

  • 이충헌 (동명대학교 메카트로닉스공학과) ;
  • 김규동 (동명대학교 컴퓨터공학과) ;
  • 홍준의 (동명대학교 컴퓨터공학과) ;
  • 권장우 (동명대학교 컴퓨터공학과) ;
  • 이동훈 (동명대학교 의용공학과)
  • Published : 2009.05.07
Download PDF
⟨ Previous Next ⟩

Abstract

This research measures EEG signals which are generating on head skin and extracts brain concentration level related with brain activity. We have developed concentration wireless transmission system by displaying this EEG signal on PDA mobile device. The front head was used for measuring EEG signal and INA128 with TL084 and analog elements was used for measuring EEG signal, amplifying and filtering the signal. Measured analog EEG signals changed into digital signals by using ADC of PIC24FJ192 with 10bit resolution and 500Ks/s sampling rate. So The changed digital signals have transmitted to the PDA by using bluetooth. LabView 8.5 was also used for FFT transformation, frequency and spectrum analysis of the transferred EEG signal. As a result, $\alpha$ wave, $\beta$ wave, $\theta$ wave and $\delta$ wave were classified. we extracted the concentration index by adapting concentration extraction algorithm. This concentration index was transferred into PDA by wireless module and displaying.

Keywords