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大量资料表明〔1、2〕,测定心脏的收缩时间间期(STI)及舒张时间间期(DTI)是评定心脏功能的重要无创性方法;对于心血管疾病的早期诊断及临床监护,对航空、潜水、高原矿山作业等特殊条件下心血管机能的评定,连续监测都具有重要价值.传统测定STI与DTI的方法是同步描记心电图(ECG)、心音图(PCG)、颈动脉搏动图(CAR)及心尖搏动图(ACG),由于测试仪器价格昂贵,操作技术复杂,所用传感器制作条件要求严格,易损坏,又易受多种因素干扰,如PCG的传感器对周围噪音敏感,脉搏传感器
A large number of data show that 〔1,2〕, the determination of cardiac systolic time (STI) and diastolic time interval (DTI) is an important noninvasive method to assess cardiac function; for the early diagnosis and clinical monitoring of cardiovascular disease, aviation , Diving, plateau mine operations and other special conditions of cardiovascular function assessment, continuous monitoring is of great value.Traditional methods for the determination of STI and DTI are synchronous ECG (ECG), sound cardiogram (PCG), carotid artery pulse chart (CAR) And apex beat chart (ACG). Due to the expensive testing equipment and complicated operation techniques, the sensor manufacturing conditions are strict, easily damaged, and susceptible to many factors such as PCG’s sensor is sensitive to ambient noise. The pulse sensor