PULSE WAVE VELOCITY DETERMINATION, FOR EXAMPLE FOR BLOOD PRESSURE MONITORING

A pressure distribution profile of a subject lying on a mat is used to derive a measure of pulse wave velocity. Beat locations are identified where beat pressure signals are identified, and pulse timing information is obtained from the beat locations. By determining a subject posture, the beat locations are mapped to anatomical body locations and arterial path length information is obtained for the anatomical body locations. A pulse wave velocity is then estimated from the pulse timing information and arterial path lengths. This method enables measuring the pulse wave velocity during sleep ina comfortable, easy and unconstrained manner. This is accomplished by analyzing signals from a pressure sensitive surface for example on top of a bed mattress or by embedding a pressure sensitive layer in the mattress. 躺在垫子上的对象的压力分布概况被用于导出脉搏波速度的量度。搏动位置被识别，在所述搏动位置处搏动压力信号被识别，并且从搏动位置获得脉搏定时信息。通过确定对象姿势，将搏动位置映射到解剖身体位置，并且获得针对解剖身体位置的动脉路径长度信息。然后根据脉搏定时信息和动脉路径长度估计脉搏波速度。该方法使得能够以舒适、容易和不受约束的方式测量睡眠期间的脉搏波速度。这是通过分析来自压力敏感表面的信号来实现的，例如在床垫的顶部