http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
李仁光(In-Kwang Lee),金盛植(Seong-Sik Kim),張鐘贊(Jong-Chan Jang),金君珍(Koon-Jin Kim),金敬娥(Kyung-Ah Kim),李泰洙(Tae-Soo Lee),車殷宗(Eun-Jong Cha) 대한전기학회 2008 전기학회논문지 Vol.57 No.1
Abdominal circumference changes due to breathing by the respiratory muscle activity such as diaphragm, which would partially represent the lung volume variation. The present study introduced conductive rubber molded in a cord shape incorporated with a patient's pants. The conductive rubber cord operated as a displacement transducer to measure the lung or abdominal volume changes. Signal extraction circuitry was developed to obtain the volume and its derivative(or the flow) signals followed by wireless transmission based on the Zigbee communication protocol in a size of 65㎜×105㎜ easily put in pocket. Breathing frequency was accurately evaluated and breath pattern analysis seemed feasible, since respiratory behaviours such as maximal inspiration and cough were well identified. Remote wireless receiver module also enabled to monitor both volume and flow signals during resting breathing on a PC terminal.
李仁光(In-Kwang Lee),金盛植(Seong-Sik Kim),張鐘贊(Jong-Chan Jang),金君珍(Koon-Jin Kim),金敬娥(Kyung-Ah Kim),李泰洙(Tae-Soo Lee),車殷宗(Eun-Jong Cha) 대한전기학회 2008 전기학회논문지 Vol.57 No.7
Respiration is induced by muscular contraction of the chest and abdomen, resulting in the abdominal volume change. Thus, continuous measurement of the abdominal dimension enables to monitor breathing activity. Conductive rubber cord has been previously introduced and tested to develop wearable application for respiratory measurements. This study implemented respiratory monitoring system with the conductive rubber cord in the patient's pants in purpose of quantitative estimation of tidal volume. Air mixed with 0~5% CO₂ was inhaled and the respiratory air flow rate, abdominal dimension change, and end tidal CO₂ concentration were simultaneously measured in steady state. CO₂ inhalation significantly increased the tidal volume in normal physiological state with the subject unawared. The tidal volume estimated from the abdominal dimension change linearly correlated with the tidal volume measured by a pneumotachometer with a correlation coefficient of 0.88. Customized calibration for each subject resulted in relative errors less than 10%. Therefore, the tidal volume was accurately estimated by measuring the abdominal dimension change.