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1、中山犬訾碩士學(xué)位論文心率變異性信號(hào)特征提取方法研究專業(yè)名稱:學(xué)位申請(qǐng)人:導(dǎo)師姓名及職稱:答辯委員會(huì)成員:亙一整一曼一絲一熊鹽一雌且晷
2、』皇二一盔趁淦堇一重型一醫(yī)心率變異性信號(hào)特征提取方法研究專業(yè):檢測技術(shù)與自動(dòng)化裝置碩士生:楊一帆指導(dǎo)教師:陳云洽副教授摘要心率變異性信號(hào)(HeartRateVariability,HRv)指的是連續(xù)心跳瞬時(shí)心率的微小漲落,或逐拍咫間期的微小漲落,它是反映交感神經(jīng)、副交感神經(jīng)張力及其平衡的重要指標(biāo),與很多疾病特別是心血管疾病有關(guān)。HRV降低是預(yù)測心臟病患者死亡的獨(dú)立危險(xiǎn)因子,有十分重要的臨床意義和價(jià)值。近年來,隨
3、著信號(hào)處理技術(shù)的不斷發(fā)展,作為檢測自主神經(jīng)張力及二者平衡變化的一項(xiàng)無創(chuàng)技術(shù),HRV的研究已經(jīng)成為一大研究熱點(diǎn)。HRV的非線性動(dòng)力學(xué)參數(shù)是間接評(píng)價(jià)心臟自主神經(jīng)功能的有效指標(biāo),具有無創(chuàng)性、靈敏度高和可定量測量的優(yōu)點(diǎn),對(duì)于判斷自主身神經(jīng)在正常人和心血管和非心血管疾病中起重要作用,是一項(xiàng)十分有價(jià)值的手段,具有廣闊的臨床應(yīng)用和研究前景。本文以MIT-BIH數(shù)據(jù)庫中的心電信號(hào)為研究對(duì)象,運(yùn)用離散小波分析,對(duì)心電信號(hào)進(jìn)行了濾波、分解和重構(gòu)等處理,完成QRS波的檢測,獲取了精度較高的HRv波形。然后,運(yùn)用龐卡萊截面、Lyapunov指數(shù)等非線性動(dòng)力學(xué)理論方法
4、,對(duì)HRv信號(hào)作了進(jìn)一步的深入分析,獲取了一些可應(yīng)用于輔助臨床診斷的信號(hào)特征。關(guān)鍵詞:心率變異性,QRS波,小波分析,非線性理論ABSTRACTTheMethodofDistillingtheCharacteristicsofHeartRateVariabilitySignalMajorNameDetectionTechnologyandAutomationDeviceYifanYangSupervisor-.AssociateProf.YunqiaChenHeartRateVariability(HRV)isasignalwhichrefl
5、ectstheslenderundulationsofthecontinualheart-beats.ItsometimesalsoequalstotheslenderundulationsofR_Rperiodswhichcomeonebyone.HRVisanimportantparameterwhichreflectsthestrainandthebalanceofSympatheticNervousSystem(SNS)andParasympatheticNervousSystem(PNS).Ithasbeenprovedtorela
6、tewithmanydiseases.especiallythecardiovasculsrsystemdiseases.Thedecreaseofthe塒Wisanabsolutefataldiathesistoforecastthedeathofthecardiopathypatients.Thusithasagreatimportanceandvaluetoapplyinclinic.Inrecentyears,withtheuninterruptedimprovementofthesignalprocessingtechnology,
7、HRvhasbecomearesearchhetspotasawoundlesstechnique.whichutilizesinthedetectionoftheindependencenervestrains,anditsbalancedvariability.Thenon—lineardynamicparametersofHRVareaneffectivecriterion.whichisusedtomakeanindirectestimationtotheindependencenervefunctionsoftheheart.Ith
8、asanumberofadvantages.Itiswoundlessanddelicacy.Anditcanbemeasuredbyration.Thenon-1inearanalyticHI心宰變異性信號(hào)特征提取方法研究methodisallinstrumentwithgreatvalue,whichisutilizedinthediagnosisofthecardiovascularsystemdiseases.Andwhat’smore。itcanalsousetoassistthediagnosisofotherdiseases.T
9、husthemethodhasaroomyforegroundofresearchandapplication.Thispaperappliesthedatawhi