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研究生:鄧乃睿
研究生(外文):Nai-Rui Teng
論文名稱:心音訊號有效區間之擷取及其於數位聽診系統之應用
論文名稱(外文):Extracting Effective Heart Sound Signal for Application in Digital Stethoscope
指導教授:譚旦旭譚旦旭引用關係黃文增黃文增引用關係
口試委員:陳錦杏張正春
口試日期:2012-07-10
學位類別:碩士
校院名稱:國立臺北科技大學
系所名稱:電機工程系所
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:64
中文關鍵詞:數位聽診器心音訊號自相關小波去噪心臟雜音
外文關鍵詞:StethoscopeHeart SoundAutocorrelationWavelet De-noisingMurmur
相關次數:
  • 被引用被引用:6
  • 點閱點閱:325
  • 評分評分:
  • 下載下載:1
  • 收藏至我的研究室書目清單書目收藏:0
本研究結合傳統類比聽診器與個人電腦完成一套數位式聽診系統,此系統除可供醫師執行傳統類比聽診,並可在電腦端執行數位化功能,因此兼具類比式聽診器與數位化的優點。由於數位聽診器在操作時易受到人為干擾影響,且此種干擾不易有效去除,因此我們整合小波去噪(Wavelet de-noising)、相關性(Autocorrelation)與機率統計等工具開發一套心音有效區間擷取演算法來擷取無人為干擾的有效區間,供醫師快速診斷之參考。同時,我們也發展ㄧ套心音異常的判斷及警示機制,供診斷心臟雜音(Murmur)之用。實驗結果顯示,本系統可大幅改善傳統聽診器的聽音效果,並能精確擷取心音訊號有效區間,而且可精準判斷某些心音異常症狀,因此具備實用潛力。

This study implements a digital stethoscope by integrating analogy stethoscope and computer, by which physicians can not only perform diagnosis via traditional analogy stethoscope, but also they can analyze the data stored in the computer due to the advantages of digitization. To escape from the impact of man-made noise in the digital stethoscope, an algorithm for extracting effective heart sound signal is developed by using wavelet de-noising, autocorrelation function, and probability statistics. Physicians can utilize the extracted heart sound signal to execute prompt diagnosis. Meanwhile, a scheme for detecting abnormal heart sound is proposed to classify heart murmur. Experimental results verify potential of the proposed system in practical diagnosis application.

目 錄

中文摘要 i
英文摘要 ii
誌謝 iii
目錄 iv
表目錄 vi
圖目錄 vii
第一章 序論 1
1.1 研究動機 1
1.2 文獻探討 3
1.3 研究目的 5
1.4 論文架構 6
第二章 相關背景知識 7
2.1 心音概論 7
2.1.1 心臟結構 7
2.1.2 心音的產生 8
2.1.3 心音的組成 8
2.1.4 心臟雜音的產生 9
2.1.5 心音的頻率特點 10
2.2 心音圖概述 10
2.3 心臟雜音 11
2.3.1 主動脈瓣狹窄 11
2.3.2 二尖瓣狹窄 13
2.4 常用濾波器介紹 14
2.5 小波去噪 15
第三章 研究方法 17
3.1 系統架構 17
3.2 執行流程 18
3.3 心音訊號之量測 20
3.3.1 類比聽診器 20
3.3.2 電容麥克風 20
3.4 系統執行環境 22
3.4.1 傳統聽診 22
3.4.2 數位分析 23
3.5 系統實作 23
3.5.1 傳統聽診端實作 23
3.5.2 數位分析端實作 24
3.5.3 心音輔助診斷 32
3.5.4 圖型化人機介面 37
第四章 實驗結果 39
4.1 實驗一 39
4.2 實驗二 44
4.3 實驗三 47
4.4 實驗討論 49
4.5 與現有聽診系統之比較 51
第五章 結論與未來展望 53
5.1 結論 53
5.2 未來展望 53
參考文獻 54
附錄A 中英文對照表 58
附錄B 本論文之相關補充 60


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