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博碩士論文 etd-0711116-173355 詳細資訊
Title page for etd-0711116-173355
論文名稱
Title
壓電式應變感測裝置於非侵入式血壓量測
Non-invasive Blood Pressure Measurement using Piezoelectric Strain Gauges
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
106
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2016-07-19
繳交日期
Date of Submission
2016-08-30
關鍵字
Keywords
脈波傳遞時間、脈波傳遞速度、血壓脈搏訊號、光體積變化描記圖訊號、壓電式應變感測裝置
pulse transit time, pulse wave velocity, blood pressure pulse signals, piezoelectric strain sensor, photoplethysmography signals
統計
Statistics
本論文已被瀏覽 5703 次,被下載 567
The thesis/dissertation has been browsed 5703 times, has been downloaded 567 times.
中文摘要
隨著全球人口日益高齡化,銀髮族長期的生理監控系統急需被開發與建立。在各項生理監測系統中,血壓的監測是最重要的生理訊號之一。常見的血壓計,如水銀血壓計與電子血壓計皆是利用氣囊式壓脈帶對動脈施壓。對於需要常時間監控血壓的使用者來說,易造成量測部位不適,且沒有辦法進行連續血壓的監測。近來,無氣囊式的血壓量測方式已變得日益重要且被廣泛地研究中。
本論文提出一種利用脈波傳遞時間和皮膚表皮應變來估算血壓的方法,先透過厚管理論和脈波傳遞速度方程式建立血壓估算方程式。接著,將壓電式應變感測裝置及光體積變化感測裝置分別放置於手腕橈動脈上方表皮處和手指末端處。因為兩個裝置相距一段固定的距離,所以兩個訊號會產生時間差。而利用脈波傳遞時間及血壓脈搏訊號,透過血壓估算方程式來推算血壓值。
Abstract
As the global population is increasingly aging, long-term physiological monitoring system for senior citizen need to be developed and established. Among all the physiological monitoring system, blood pressure monitoring is one of the most important physiological signals. Conventional blood pressure monitor, such as mercurial sphygmomanometer and electric sphygmomanometer are all applying compression to artery by using inflatable cuff. For long-term blood pressure monitoring user, compressing artery may cause the measurement section uncomfortable, and it can’t monitor continuous blood pressure. Nowadays, estimating blood pressure by cuffless method has become increasingly important and is widely research.
This thesis proposes a method to estimate blood pressure using pulse transit time and strain of epidermis. First, using the thick-cylinder theory and pulse wave velocity to establish blood pressure estimation equation. Continuously, setting piezoelectric strain sensor and photoplethysmography sensor at wrist above radial artery and finger tip, respectively. Because two devices are set at a fixed distance, so that can cause a time delay between blood pressure pulse signals and photoplethysmography signals. Using pulse transit time and blood pressure pulse signals to calculate blood pressure by blood pressure estimation equation.
目次 Table of Contents
論文審定書 i
誌謝 ii
摘要 iii
ABSTRACT iv
目錄 vi
圖次 viii
表次 xi
符號說明 xii
第一章 緒論 1
1.1前言 1
1.2研究動機與目的 3
1.3文獻回顧 5
1.3.1光學式血壓量測方式 5
1.3.2機械式血壓量測方式 7
1.3.3連續式血壓量測 9
1.3.4壓電纖維電紡技術與應用 12
1.4論文架構 16
第二章 研究方法與理論 18
2.1血壓基本知識 18
2.2影響血壓的生理因素 19
2.2.1血管彈性 20
2.2.2心臟收縮及血管阻力 21
2.2.3血液黏滯度 22
2.3應變式血壓量測方法 22
2.3.1血壓脈搏訊號擷取系統 24
2.3.2皮膚血管組織模型建立 25
2.3.3有限元素數值模擬分析 26
2.3.4瓶頸與解決之道 29
2.4利用脈波傳遞時間估算血壓值 30
2.4.1血壓脈搏訊號及光體積訊號擷取系統 31
2.4.2血壓估算方程式 32
2.4.2.1厚管理論 33
2.4.2.2建立血壓關係式 38
第三章 感測裝置原理與製作 42
3.1壓電式應變感測裝置 42
3.1.1壓電效應 42
3.1.2正壓電效應 43
3.1.3逆壓電效應 44
3.1.4極化處理 44
3.1.5壓電工作模式 45
3.1.6網版印刷電極設計 46
3.1.7電紡壓電纖維 49
3.1.8壓電纖維式感測器 52
3.1.9壓電薄膜式感測器 57
3.2光體積變化描記圖訊號感測裝置 59
3.2.1光體積變化描記圖訊號 60
3.2.2光體積變化描記圖訊號數學模型 61
第四章 實驗結果與討論 64
4.1壓電轉換公式推導 64
4.1.1壓電纖維轉換公式 64
4.1.2壓電薄膜轉換公式 67
4.2壓電薄膜訊號量測 69
4.3脈波傳遞時間量測 73
4.3.1系統延遲時間估算 75
4.3.2實際脈波傳遞時間量測 77
4.4實驗量測結果 78
第五章 結論與未來展望 82
5.1結論 82
5.2未來展望 84
參考文獻 86
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