基于阵列式触觉传感器的中医脉象采集系统的设计

摘要

给出了一种基于电容式触觉传感器阵列的新型中医脉象采集系统的设计,弥补了以往单点压力传感器定位不准、信息量少、重复性差等缺点,目的是为中医脉象的客观化研究提供技术支持.本系统包括采集器软硬件、PC端软件设计以及基于斜率阈值的脉象起始点、主波峰值点特征提取方法.系统采集的脉象波形稳定,通过与人工标注的数据对比,特征提取算法的误差在0.02 s以内.%A design of Chinese pulse collection system based on the tactile array sensor is given. It makes up the disadvantage of traditional single-point pressure sensors such as hard to locate, lack of information and hard to duplicate. The aim of this design is to offer technical support to the objective research of Chinese pulse and traditional Chinese medicine(TCM). The system includes the collectors hardware and software design,the software on PC and the feature extraction method of the onset and main wave peak value point of the pulse condition based on slope threshold. The pulse condition waveform collected by system is stable. By comparison with the manual marked data,the error extracted by the algorithm of feature extraction is less than 0.02 s.