基于传递函数和指端脉搏波的桡动脉脉搏波重建

Radial Pulse Wave Reconstruction Based on the Transfer Function and Finger Pulse Wave

桡动脉脉搏波的检测方法易受人体运动影响,因此提出了传递函数法通过指端脉搏波来估计桡动脉脉搏波.首先,通过分析窗宽和模型阶次建立指端脉搏波到桡动脉脉搏波的传递函数FIR模型;然后,使用测试数据评估模型对桡动脉脉搏波估计的精度.通过对10个受试者10 d的样本数据进行分析处理,发现估计的桡动脉脉搏波与实测的桡动脉脉搏波最佳波形匹配度均在70%至92%范围内.结果表明使用传递函数法可以实现对桡动脉脉搏波的初步估计,该方法的提出为桡动脉脉搏波的检测提供了一种更简便的手段.

The acquisition method of radial pulse wave is easily influenced by human body＇ s activities. The transfer function method was applied to estimate radial pulse wave using finger pulse wave. After the window size and the order of the model were being analyzed, the transfer function FIR model between radial pulse wave and finger pulse wave was set up firstly. Then the test data were used to estimate the radial artery pulse wave and verify the accuracy of the proposed model. By analyzing ten subjects＇ data acquired in ten days, the best waveform match between the estimated and the measured radial artery pulse waves were in the range from 70% to 92%. It is notable that using the transfer function method could estimate radial pulse wave from finger pulse wave. This method provided a new easy way for monitoring radial pulse wave.