近十年來市面上各種穿戴式裝置蓬勃發展，提供使用者包含血氧率或心率等生理資訊，尤其使用上非常便利且價格低廉使得推廣容易獲得普及。而市占率最高智慧手環所穿戴部位在手腕橈動脈的附近，動脈脈波特徵對於血管狀態和疾病的相關性是具有解析能力，因此建立如穿戴裝置的簡易便利的特性來量測動脈脈波作為評估供血功能，量測與分析微循環供血的生理狀態是具有相當的優勢和前瞻性。整體系統從機械、軟體和電路三個方面設計，建立一套穿戴式橈動脈光容積量測系統。
本研究內容分別為第一部分:系統建置與測試驗證，從手環本體結構、電路設計、印刷電路設計及量測程式介面設計等;第二部分:人體量測評估，驗證所開發腕帶式光容積量測系統的再現性與穩定度以及透過脈波傳遞時間推估血壓能力。實驗結果中，從整體波形比較或從單一諧波成分來比較，腕帶式光容積感測器比較實驗室過去所研製的壓力式動脈血壓感測器所量測的脈波波形皆有較好的相關度與穩定性。
本系統降低量測橈動脈波形訊號過程中的操作門檻，提供另一種更佳便利與穩定的量測血壓脈波工具，未來系統朝向電路微型化、無線傳輸和大數據運算有助於居家醫療與遠距量測診斷的方式。

In the past ten years, the number of wearable devices on the market has flourished, providing users with physiological information such as blood oxygen rate or heart rate. In particular, these devices are very convenient and their price is low, which makes them easy to popularize. The wristband is worn near the wrist’s radial artery, and by analyzing arterial pulse wave characteristics it is capable of correlating vascular status and disease. Therefore, it is quite advantageous and forward-thinking to establish the characteristics of these wearable devices to measure the arterial pulse wave as an evaluation of the blood’s supply function and to measure and analyze the physiological state of the microcirculation of the blood supply. This overall system is designed using the three aspects of structure, software, and circuitry to build a measurement system.
This study examines the first part of this system through system construction and test verification, including the structure of the wrist ring, circuit design, printed circuit design, and measurement program interface design; and the second part through clinical trial assessment, stability, and the reproducibility of test sensors and systems. In our experimental results, the radial-artery photoplethysmographic sensor has good correlation and stability in both the overall waveform comparison and in the comparison of the components.
This system reduces the operational difficulty of measuring signals and provides a better, more stable and more convenient measurement tool. In the future, it is expected that this system will be oriented toward circuit miniaturization, wireless transmission, and big data operation to assist with at-home medical and remote measurement diagnoses.

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