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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/71542

    Title: 多波長光源與應用於血氧濃度探測之研究;The research of multi wavelength light source and its application in pulse oximeter
    Authors: 鍾雙兆;Chung,Shuang-Chao
    Contributors: 光電科學與工程學系
    Keywords: 血氧飽和濃度;血氧計;光體積變化描記圖;皮膚模型;SpO2;Pulse Oximeter;PPG;Skin Model
    Date: 2016-07-25
    Issue Date: 2016-10-13 13:15:33 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 在本論文中,我們應用LED光源窄頻與可靠性高之優點,首先完成一多波長調變之光源,探討多波長光源於生物組織之傳播行為之差異。然後,我們建立一可靠有效的光學皮膚模型,使用蒙地卡羅光追跡之方式,模擬光於皮膚組織吸收與散射差異之特性,研究光於生物組織之能量傳遞行為,進而了解入射光在通過組織後,光被皮膚組織吸收和散射之現象,進而優化系統之效率。此研究方式透過電腦模擬,可有效了解光於生物組織可能之行為,提供更精確之光學系統設計,進而改良傳統反射式血氧飽合測定儀效率低之缺點。
    ;Photoplethysmography (PPG) is a useful technique that widely used to monitor blood changes which induced by cardiac pulsations. Pulse oximer uses this technique of PPG to estimate arterial blood oxygen saturation values (SpO2) and pulse rate (PR). In this thesis, a new reflective pulse oximeter is proposed and demonstrated with implanting a Fresnel lens, which enhances the reflected signal. An optical simulation model incorporated with human skin characteristics is presented to evaluate the capability of the new reflected optical system. Based on the skin model, the new prototype is optimized and realized. Compared with the other reflective oximeters, the reflected signal light detected by the photodiode is effectively enhanced. The prototype was able to accurately measure within an error of + 3% for SpO2 and PR respectively from the wrist.
    Appears in Collections:[光電科學研究所] 博碩士論文

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