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학술대회 Development of a Wristwatch-Type PPG Array Sensor Module
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이용귀, 신현순, 조준, 이윤경
International Conference on Consumer Electronics (ICCE) 2011 : Berlin, pp.168-171
11MC2400, 센싱기반 감성서비스 모바일 단말 기술개발, 신현순
In this work, we address a new photoplethysmography (PPG) signal sensing method using a wristwatch-type PPG array sensor. According to the development of the ubiquitous health care system, the many types of medical equipment and treatments have been improved. In conventional PPG signal sensing approaches, the finger-type PPG probe has been used. However, the finger-type PPG probe requires tight fitting that restricts movement, meaning that patients should endure dome discomfort while wearing it. To solve this problem, we propose a novel PPG array sensor module with a wristwatch-type design. The proposed module measures the PPG signal from the radial artery and the ulnar artery of the wrist, whereas previous methods obtained it from capillaries of the skin. Moreover, we placed photo transistors (ST-23G) and infrared emitting diodes (EL-23G) in an array form to improve the PPG signal sensitivity and level of accuracy. Various arrays are considered for optimization, and a conductive fiber wristband is employed to reduce external noise. In the experiments, the proposed module is assessed and compared with the commercial product TSD200 by Biopac, Ltd. © 2011 IEEE.
Mobile device, Photoplethysmograph, PPG array sensor, U-health, Wristwatch-type
KSP 제안 키워드
Emitting diodes, External noise, Healthcare Systems, Infrared emitting, Level of accuracy, Mobile devices, PPG signal, Sensor module, Type design, U-health, Ubiquitous health care(UHC)