以左上臂ECG與PPG為基準之血壓連續估測

本論文基於睡眠血壓監測需求，提出一種以心電圖(Electrocardiogram, ECG)和光體積描繪圖(Photoplethysmography, PPG) 量測技術為基礎的單臂式非加壓睡眠血量測裝置設計，本硬體設計克服單臂式 ECG與 PPG訊號微弱之困難，藉由適當的電路匹配與高增益設計，將現有臂式 ECG測量從三電極降為雙電極，在單一手臂式上實現雙電極 ECG測量與PPG測量，進而完成基於PAT原理之睡眠血壓量測裝置，同時驗證了單臂式 ECG與 PPG訊號對於 PAT血壓估測理論的適用性。本論文已將裝置結合機構發展出第一版本的穿戴式原型機，實驗也都與此計畫目標環境設置相似。除了實現藍芽傳輸高取樣率之訊號且使用Jetson Nano作為PC端進行資料實時顯示與收錄存檔。研究方向部分，本論文將初步對手臂上水平切面向量進行分析，希望能透過本實驗找到通用的向量三角形並對其做說明與解釋需討論之處，此外另一項實驗將以穩定度作為標準找出左上臂最佳的ECG雙電極測量點組合。

關鍵字

心電圖；光體積描繪圖；左上臂向量；血壓； Einthoven's triangle

並列摘要

Based on the requirements of sleep blood pressure monitoring, this paper proposes a design of a single-arm non-pressurized sleep blood measurement device based on electrocardiogram (ECG) and photoplethysmography (PPG) measurement technologies. The difficulty of single-arm ECG and PPG is the weak signal. With appropriate circuit and high gain settings, the single-arm-type ECG measurement is reduced from three-electrode to two-electrode, the two-electrode ECG and PPG measurement can be realized on a single-arm. Furthermore, a sleep blood pressure measurement device based on the PAT principle is completed, and the applicability of the single-arm ECG and PPG signals to the PAT blood pressure estimation theory is verified. In this paper, this version of the wearable device has been developed as the prototype. The experiments are also similar to the target environment settings of this project, not only the Bluetooth signal is transmitted with high sampling rate but the Jetson Nano is used as the PC terminal for real-time data display, the recording function is achieved. In the research, this paper will analyze the horizontal section vector on the arm, hoping to find a general vector triangle through this experiment and explain what needs to be discussed. In addition, another experiment will use stability as a standard. Find out the best combination of ECG two-electrode points for the left upper arm measurement.

並列關鍵字

Electrocardiogram ； Photoplethysmography ； Left-upper arm ； Blood pressure ； Einthoven's triangle

參考文獻

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