适用于脉搏波传导时间测血压准确性研究的多信号采集系统

目的：设计一种可用于脉搏波传导时间法测量血压准确性研究的多信号采集系统。方法：分析可能影响准确性的几方面因素,设计可采集多参数的系统及可用于个性化校正的模块,可与DSP运算模块无缝连接的数据接口等结果：分别采用2种测量方法测量脉搏波传导时间,20人次的测量实验表明,多参数信号质量较好,经过软件简单滤波后即可准确定位各特征点,便于计算脉搏波传导时间,进行算法研究。采集系统可与DSP运算模块无缝连接构建实验平台。结论：适用于脉搏波传导时间研究的多信号采集系统可用于脉搏波传导时间法测量血压准确性的研究

Multi Physiological Parameters Collecting System for Research on Veracity of Blood Pressure Measurement by Pulse Wave Transmit Time

Objective To design a system in order to do research on the veracity of blood pressure measurement used pulse wave transmit time(PWTT) method.Methods Some factors that could affect the veracity of blood pressure measurement using PWTT were analyzed,the system that could collect multi physiological parameters,the module that could be used for the individual calibration of blood pressure measurement,and also the data interface that could be connected seamlessly with the DSP arithmetic module were designed.Results Two methods were used to calculate the PWTT.The results of 20 times measurement experiment indicated that the signal quality of multi physiological parameters was very good,after simple filter,the feature points could be located accurately,and the PWTT was easy to be calculated for algorithm study.The system also provided seamless interface to the DSP board,which could be used to build the experiment system.Conclusion The system proposed can be used to do the research on the veracity of blood pressure measurement by PWTT method.