结合心理图的血压测量装置与算法

发布时间：2019-05-18 03:40

【摘要】：针对动态、连续血压检测的需求,在实现基于示波法的全自动血压计基础上,探索结合心电图与红外脉搏波的血压检测方法,开发了可穿戴实时血压测量装置。在获得同步的心电图信号与红外脉搏波信号基础上,给出了基于斜率阈值法来提取心电图主波以及红外脉搏波信号的上升沿最快点以计算脉搏传导时间的方法,并通过建立脉搏传导时间——血压模型来估算血压值。该方法已用于可穿戴式无线生理特征检测仪以动态监测收缩压的变化,为今后探索更好、更有效的无创连续血压检测方法提供了借鉴。实验表明,脉搏传导时间对于收缩压而言有较强的相关性,而对于舒张压,模型效果并不理想。模型目前只考虑了单一参数,是否需要引入身高、体重、心率等其他生理参数,是接下去需要继续研究的地方。另外,采集过程中的各种突发干扰,异常心电图对于特征检测的影响有待分析。
[Abstract]:In order to meet the needs of dynamic and continuous blood pressure detection, a wearable real-time blood pressure measuring device is developed on the basis of realizing automatic sphygmomanometer based on oscillographic method and exploring the blood pressure detection method combining electrocardiogram and infrared pulse wave. On the basis of obtaining synchronous ECG signal and infrared pulse wave signal, a method based on slope threshold method to extract the main wave of ECG and the fastest rising edge of infrared pulse wave signal is given to calculate the pulse conduction time. The pulse conduction time-blood pressure model was established to estimate the blood pressure. This method has been used in wearable wireless physiological characteristic detector to dynamically monitor the changes of systolic blood pressure, which provides a reference for exploring a better and more effective noninvasive continuous blood pressure detection method in the future. The experimental results show that pulse conduction time has a strong correlation with systolic blood pressure, but for diastolic blood pressure, the effect of the model is not ideal. At present, the model only considers a single parameter, whether or not it is necessary to introduce other physiological parameters such as height, weight, heart rate and so on, is the next place to continue to study. In addition, the influence of all kinds of sudden interference and abnormal electrocardiogram on feature detection needs to be analyzed.
【学位授予单位】：华东师范大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH776;R197.39

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