Abstract

블루투스, 지그비, RFID와 같은 저가의 저 전력 무선통신 기술의 실용화는 웰빙 바람과 함께 유비쿼터스 헬스케어에 대한 관심이 급격하게 증가하고 있으며 u-Health는 센서네트워크분야에서 가장 중요한 응용분야중 하나가 되고 있다. 특히 독거노인이나 실버타운의 노인을 위해 응급상황에 대한 대처가 가능한 의료서비스를 개발하는 것은 그 자체로 의미가 있으며 그 수요는 노령인구의 급속한 증가와 함께 지속적으로 늘어날 것으로 기대된다. 이에 본 논문은 일상생활에서 손가락에 착용한 반지모양의 pulse oximeter 센서에 의해 수집된 PPG 신호로부터 정확한 맥박 변화율을 이끌어내는 것에 대한 타당성을 보이고자 한다. 이를 위해 반사형과 투과형 2가지 종류의 반지센서를 제작하였으며 반지센서로부터 맥박데이터를 수집, 분석하고 응급상황에 대처할 수 있는 원격의 모니터링 시스템을 개발하였다. As low power, low cost wireless communication technology like Bluetooth, Zigbee, RFID has been put to practical use together with the wellbeing trend, the concern about ubiquitous health care has been greatly increased and u-Health is becoming one of the most important application in the sensor network field. Especially, development of the medical services to be able to cope with a state of emergency for solitary senior citizens and the aged in silver town is very meaningful itself and their needs are also expected to continuously increase with a rapid increase in an aging population. In this paper we demonstrate the feasibility of extracting accurate heart rate variability (HRV) measurements from photoelectric plethysmography(PPG) signals gathered by a ring type pulse oximeter sensor attached to the finger. For this, we made 2 types of ring sensor, that is reflective and pervious type, and developed the remote monitoring system which is able to collect HR data from ring sensor, analyze and cope with a state of emergency.

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