Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Development of Wireless Electronic Cardiogram and Stethoscope (ECGS) to Measure ECG Signal and Heart Sound

심전도와 심음을 측정하기 위한 무선 전자 심전도-심음 청진기 개발

  • Cho, Han Seok (Department of Electronic Engineering, Hanbat National University) ;
  • Kang, Young-Hwan (Department of Electronic Engineering, Hanbat National University) ;
  • Park, Jae-Soon (Department of Electronic Engineering, Hanbat National University) ;
  • Choi, Jin Gyu (Department of Electronic Engineering, Hanbat National University) ;
  • Joung, Yeun-Ho (Department of Electronic Engineering, Hanbat National University) ;
  • Koo, Chiwan (Department of Electronic Engineering, Hanbat National University)
  • 조한석 (한밭대학교 전자공학과) ;
  • 강영환 (한밭대학교 전자공학과) ;
  • 박재순 (한밭대학교 전자공학과) ;
  • 최진규 (한밭대학교 전자공학과) ;
  • 정연호 (한밭대학교 전자공학과) ;
  • 구치완 (한밭대학교 전자공학과)
  • Received : 2022.02.18
  • Accepted : 2022.04.22
  • Published : 2022.04.30
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Abstract

In this paper, we proposed a portable electronic cardiogram and stethoscope (ECGS) that can simultaneously perform the electrocardiogram (ECG) and auscultation tests to increase the reliability of diagnosis of heart disease. To measure the ECG and heart sound (HS) at the same time, three ECG electrodes and a microphone sensor were combined into a triangular shape with a width of 90 mm and a height of 97 mm that can be held in one hand. In order to prevent skin problems when they contact the patient's skin, a capacitive coupled electrode was selected as the ECG electrode and a silicone material was used in a chest piece with the microphone sensor. For the signals measured from the electrodes and the chest piece, filters were respectively configured to pass only the signals of 0.01-100 Hz and 20-250 Hz, which are frequency bands for ECG and HS. The filtered ECG and HS analog signals were converted into digital signals and transmitted to a PC using wireless communication for monitoring them. The HS could be auscultated simultaneously using an earphone. The monitored ECG had an SNR of about 34 dB and a P-QRS-T waveform is clearly visible. In addition, the HS had an SNR of about 28 dB and both S1 and S2 are clearly visible. It is expected that it can aid doctors' inexperience in analyzing the ECG and HS.

Keywords

Acknowledgement

본 연구는 정부 (과학기술정보통신부, 산업통상자원부, 보건복지부, 식품의약품안전처)의 재원으로 범부처전주기의료기기연구개발사업단(과제고유번호: 1711138216, KMDF_PR_20200901_0118)의 지원을 받아 수행하였음.

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