Transfer Function Relating Compressive Pressure to Interfacial Stress Sensor for Biomedical Applications  

作　　者：吕晓洲 卢文科 张建军 

机构地区：[1]School of Mechano-Electronic Engineering,Xidian University [2]College of Information Science & Technology,Donghua University [3]Department of Electrical Engineering,University of Washington [4]School of Electronic Engineering,Xi'an Shiyou University

出　　处：《Journal of Donghua University(English Edition)》2013年第1期34-37,共4页东华大学学报（英文版）

基　　金：National Natural Science Foundations of China(No.60976058,No.61274078);Innovation Program of Shanghai Municipal Education Commission,China(No.13ZZ049);Fundamental Research Funds for the Central Universities of Xidian University,China(No.K5051304005)

摘　　要：To help comfort for an amputee, it is important to understand the load distribution between the residual limb and the prosthetic socket for a prosthetic socket system. An interfacial stress sensor was presented which was capable of measuring compressive pressure and shear stress simultaneously. A mathematical model was built and an experiment was conducted to obtain the transfer function of interfacial stress sensor to compressive pressure. The results show that the sensor is capable of measuring a range of 30-217 kPa compressive pressure with a relative error of 32.15% in lower range and 6.22% in upper range.To help comfort for an amputee, it is important to understand the load distribution between the residual limb and the prosthetic socket for a prosthetic socket system. An interfacial stress sensor was presented which was capable of measuring compressive pressure and shear stress simultaneously. A mathematical model was built and an experiment was conducted to obtain the transfer function of interfacial stress sensor to compressive pressure. The results show that the sensor is capable of measuring a range of 30- 217 kPa compressive pressure with a relative error of 32. 15 % in lower range and 6.22 % in upper range.

关 键 词：transfer function interfacial stress sensor residual limb prosthetic socket 

分 类 号：TP212.3[自动化与计算机技术—检测技术与自动化装置]