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研究生:古騰閔
研究生(外文):Teng-MinGu
論文名稱:以末梢血流及皮膚導電度為基礎之壓力偵測系統
論文名稱(外文):Stress Detection System Based on Photoplethysmography and Electrodermal Activity
指導教授:林志隆林志隆引用關係
指導教授(外文):Chih-Lung Lin
學位類別:碩士
校院名稱:國立成功大學
系所名稱:電機工程學系碩博士班
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2012
畢業學年度:100
語文別:中文
論文頁數:47
中文關鍵詞:壓力末梢血流皮膚導電度
外文關鍵詞:StressPhotoplethysmographyElectrodermal Activity
相關次數:
  • 被引用被引用:0
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  • 評分評分:
  • 下載下載:44
  • 收藏至我的研究室書目清單書目收藏:0
生活在忙碌、多變社會中,壓力已經是無法避免的問題,若不予理會任由壓力不斷累積會導致不正常的生理反應,因此,若能隨時掌握自身壓力程度,在壓力造成傷害前給予適當紓解,便可避免因壓力而產生的疾病。
人體有許多生理訊息可藉由醫學電子儀表顯示其變化,末梢血流與皮膚導電度便是其中之一,且末梢血流與皮膚導電度有著量測容易與較不受人體型態限制之優點,本研究利用末梢血流、皮膚導電度探討不同壓力程度下生理訊號變化情形。實驗首先利用壓力量表找出八位無壓力族群的受測者,給予不同程度壓力的刺激(心算任務),透過系統擷取生理訊號並進行分析,進而找出在不同程度壓力下生理訊號變化趨勢。最後量測九位受測者的生理訊號,利用已得知之趨勢進行分析,透過系統給予壓力程度評分並與壓力量表做相關性比較,驗證系統的準確度。
實驗結果顯示,九位受測者中僅有二位無法透過系統進行壓力評估,說明本系統對於壓力評估的符合程度達到77.7%,其餘七位受測者經由相關性分析,發現相關性達到83.07%,說明了本系統對壓力評估確實有其準確性。

Stress is an unavoidable problem in our busy and diverse lives. Ignoring stress will cause unusual biological reactions. If more can be learned about levels of stress and how to relieve this stress, we will be able to prevent disease.
Many biological signals of the human body can be discovered by electronic medical equipment. Photoplethysmography (PPG) and Electrodermal Activity (EDA) are two signals which are both unrestricted by body type and can be easily detected. This work studies the changes of biological signals under various levels of stress by using PPG and EDA. The first step of our experiment is to find eight participants, designated as the no-stress group by stress scale, who are then given different levels of mental arithmetic tasks. Variations in stress levels are found by analyzing the physiological signals. Finally, the physiological signals of nine participants are measured. The system will evaluate the level of stress and the results will be compared with the stress scale to validate the accuracy of the system.
According to the experimental results, the stress evaluation system can obtain a 77.7% degree of precision and 83.07% degree of correlation. Therefore, our system is precise in evaluating stress.

中文摘要 I
英文摘要 II
致謝 III
目錄 IV
表目錄 VI
圖目錄 VII
第一章 緒論 1
1-1 研究動機與目的 1
1-2 文獻討論 2
1-2-1 壓力 2
1-2-2 末梢血流 3
1-2-3 心率變異率 4
1-2-4 皮膚導電度 6
1-3 章節提要 7
第二章 系統架構與設計 8
2-1 系統架構介紹 8
2-2 訊號量測電路設計 8
2-2-1 前級放大器 8
2-2-2 低通濾波器 10
2-2-3 帶拒濾波器 11
2-2-4 放大電路 12
2-2-5 A/D轉換電路 12
2-2-6 PPG量測電路 13
2-2-7 EDA量測電路 15
2-2-8 生理訊號電源電路 15
2-2-9 硬體系統與市售產品比較 16
2-3 嵌入式系統 16
2-3-1 嵌入式系統架構 16
2-3-2 生理訊號處理流程 17
2-3-3 嵌入式電源電路 18
2-4 生理訊號分析 19
2-4-1 訊號處理流程 19
2-4-2 PPG分析 19
2-4-3 EDA分析 21
2-5 系統測試 21
2-5-1 末梢血流電路測試 21
2-5-2 皮膚導電度電路測試 22
2-5-3 訊號儲存測試 23
2-5-4 PPI演算法測試 24
2-5-5 快速傅立葉轉換測試 24
2-6 系統實照 25
第三章 實驗設計 27
3-1 實驗設計 27
3-2 受測者 27
3-3 實驗場所 27
3-4 實驗量表 28
3-5 心理壓力刺激 28
3-6 實驗流程和方法 30
第四章 實驗結果與分析32
4-1 實驗結果 32
4-1-1 PPG訊號分析 32
4-1-2 EDA訊號分析 33
4-1-3 STAI量表分析34
4-2 參數整合 35
4-3 系統驗證與結果 36
4-3-1 系統驗證 36
4-3-2 實驗結果 38
第五章 討論 40
5-1 實驗結果討論 40
5-2 實驗問題討論 41
5-3 系統改進 41
第六章 結論 42
6-1 結論 42
6-2 研究貢獻 42
6-3 未來展望 42
參考文獻 44

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