Design and Verification of a Blood Pressure Measurement Device Based on PPG and ECG Signal
| Autor: | Meng-Han Lee, 李孟翰 |
|---|---|
| Rok vydání: | 2018 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 106 Blood pressure (BP) is one of fundamental reference parameters in cardiovascular assessment, and is highly related to heart diseases and artery diseases. For now, BP measuring method such as auscultatory or oscillometric method will use cuff to pressurized human arm, this will make user uncomfortable and cannot measure BP continuously. In this thesis, we develop a BP measuring device through pulse arrival time (PAT). The device is using MAX86150 biosensor to measure Electrocardiogram (ECG) and Photoplethysmography (PPG) simultaneously. In this thesis, We develop a algorithm of ECG R wave and PPG peak detection to calculate PAT. The experiment with 10 subjects, each subject will measure BP twice before and after running. The result shows that the average correlation coefficient between PAT and systolic BP (SBP) measured by auscultatory method is equal to 0.76, it means that only a parameter of PAT to estimate BP may not get the accuracy value. Besides, in this thesis, there is a discussion about the relationship of finger’s PPG signal and cuff’s inflation and deflation. Using PPG signal to decide SBP through PPG signal will diappear during cuff’s inflation and it will reappear during cuff’s deflation. The proposed method compared with the SBP value measured by auscultatory method, has a result of 0.18±12.62 mmHg, cannot fit in AAMI standard. Thus, we will keep using selfmade device to imporve a more accuracy algorithm. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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