中医脉诊柔性阵列式压力传感器设计.docxVIP

国际生物医学工程杂志2015年2月第38卷第1期Int J Biomed Eng，February 2015，V01．38，No．1 ·15··论著·中医脉诊柔性阵列式压力传感器设计卓俊骐王磊沙洪【摘要】 目的采集脉搏过程中的取脉点动态压力分布，用于对中医诊脉指端感受描述的客观化研 究。方法设计制作了柔性封装的中医脉诊压力传感器阵列，用于取脉点动态压力分布的采集。阵列单元 采用硅压阻式压力传感器，以1．95 mm间距的等边三角形分布在直径为15 mm的圆形基板上，共计37个。 使用柔性树脂包覆阵列单元以模拟人体指端表皮包覆触觉小体的结构。各个阵列单元的压力信号经过差分 放大后被采集和送往上位机处理，获得取脉点动态压力分布。结果以阵列式压力传感器为核心搭建了取 脉点动态压力分布采集系统，通过中医脉诊采集实验，证明该系统能够采集并绘制出取脉点动态压力分布。结论阵列式压力传感器能够用于取脉点动态压力分布的采集，反映了中医脉诊时的指端触觉感受， 为中医脉诊客观化研究提供了一种更为准确的依据。【关键词】中医脉诊；取脉点动态压力分布；柔性封装；阵列传感模式中图分类号：TP212．3文献标识码：A 文章编号：1673—4181(2015)Ol一0015—04Design of a flexible sensor array for pulse diagnosis in traditional Chinese medicine Zhuo Junqi，Wang Lei， Sha Hong．Institute of Biomedical Engineering,Chinese A cademy of Medical SciencesPeking Union Medical College，Tianjin 300192，China【Abstract】Objective To acquire high spatial resolution two-dimension pulse pressure distribution forobjectifying research of pulse diagnosis in traditional Chinese medicine．Methods A sensor array with flexible packing was designed and implemented．The array was formed on a circle substrate with 37 silicon piezoresistivepressure sensors．which weIe distributed as equilateral triangles with 1．95 mm pitch．The diameter of the substratewas 15 mm。By using flexible packing，the array had the hardness similar to that of human finger，which made this method closer to the traditional Chinese diagnosis．After differential amplifying，37一way pulse pressure signals were digitalized and reconstructed to obtain the pulse pressure distribution．Results With the application of the sensorarray，the pulse pressure signals were measured and transformed into pulse pressure distribution．Conclusions Theexperimental result contains the relevant characteristics of traditional Chinese pulse diagnosis’description，providing a new way for objective study of traditional Chinese pulse diagnosis and further study．【Key words】Traditional Chinese pulse diagnosis；Pulse pressure distribution；Flexible packing；Arraysensor mode感器阵列兼具足