Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Air flow transducer with turbulence chamber

와류 챔버를 사용하는 호흡기류 센서

  • Lee, In-Kwang (Biomedical Engineering Department, School of Medicine, CBITRC, Chungbuk National University) ;
  • Choi, Sung-Su (Biomedical Engineering Department, School of Medicine, CBITRC, Chungbuk National University) ;
  • Kim, Goon-Jin (Biomedical Engineering Department, School of Medicine, CBITRC, Chungbuk National University) ;
  • Jang, Jong-Chan (Biomedical Engineering Department, School of Medicine, CBITRC, Chungbuk National University) ;
  • Kim, Sung-Sik (Biomedical Engineering Department, School of Medicine, CBITRC, Chungbuk National University) ;
  • Kim, Kyung-Ah (Biomedical Engineering Department, School of Medicine, CBITRC, Chungbuk National University) ;
  • Lee, Tae-Soo (Biomedical Engineering Department, School of Medicine, CBITRC, Chungbuk National University) ;
  • Cha, Eun-Jong (Biomedical Engineering Department, School of Medicine, CBITRC, Chungbuk National University)
  • 이인광 (충북대학교 의과대학 의공학교실, 충북 BIT 연구중심대학사업단) ;
  • 최성수 (충북대학교 의과대학 의공학교실, 충북 BIT 연구중심대학사업단) ;
  • 김군진 (충북대학교 의과대학 의공학교실, 충북 BIT 연구중심대학사업단) ;
  • 장종찬 (충북대학교 의과대학 의공학교실, 충북 BIT 연구중심대학사업단) ;
  • 김성식 (충북대학교 의과대학 의공학교실, 충북 BIT 연구중심대학사업단) ;
  • 김경아 (충북대학교 의과대학 의공학교실, 충북 BIT 연구중심대학사업단) ;
  • 이태수 (충북대학교 의과대학 의공학교실, 충북 BIT 연구중심대학사업단) ;
  • 차은종 (충북대학교 의과대학 의공학교실, 충북 BIT 연구중심대학사업단)
  • Published : 2008.07.16
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Abstract

Cardiopulmonary resuscitation(CPR) is an important clinical technique performing artificial ventilation and chest compression on a patient under emergent situation before arriving in hospital. Since the quality of CPR significantly affects the survival rate, it would be of great advantage to monitor respiration in real time during CPR. However, currently applied respiratory air flow transducers are difficult to apply with sensing elements in the middle of the flow axis. The present study developed a new turbulent air flow transducer conveniently applicable to CPR. Abrupt changes in diameter of the flow tube generated turbulence in air flow, thereby pressure difference was obtained to estimate the air flow rate, with no physical object on the flow plane. Expiration and inspiration were separated by the direction of the pressure difference, resulting in good symmetry. Pressure-flow relationship was tested on a quadratic model, which provided accurate enough estimation results. Therefore, the present turbulent air flow transducer seemed appropriate to monitor respiration during CPR.

Keywords