부산대학교 도서관

The pulse oximeter needs to come into contact with the skin during measurement. Therefore, long-term measurement places a heavy burden on the patient. Many non-contact oxygen saturations using cameras have been studied. However, switching by high-speed blinking cannot catch up with the response of the image sensor. Therefore, we thought that the accuracy of the camera measurement could be improved by measuring the LED constantly. In this study, we propose a spectroscopic measurement method using a cold mirror as a means of measuring blood oxygen saturation. In the experiment, we report the results of pulse wave measurement on the reflection side and the transmission side of the mirror and the tendency of oxygen saturation change due to breath holding.