Title :
A conductive polymer pressure sensor
Author :
Maalej, N. ; Bhat, S. ; Zhu, H. ; Webster, J.G. ; Tompkins, W.J. ; Wertsch, J.J. ; Bach-y-Rita, P.
Author_Institution :
Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA
Abstract :
The authors have characterized the performance of the commercially available Interlink pressure sensor. The sensor costs less than $1. It is 0.25-mm thick, is light and flexible, and can be customized for a wider range of applications. The resistance-versus-pressure characteristic of the sensor is logarithmic. The operating range is from 0 to 2 MPa. The hysteresis is 8% and the nonrepeatability is less than 7% of full scale. The temperature drift is -0.5%/ degrees C of full scale. Using the Interlink sensors and electronics, the authors developed a portable data acquisition system to monitor the pressure under the bony prominences of the feet during normal gait. The advantages and drawbacks of the sensor are indicated.<>
Keywords :
biomechanics; biomedical equipment; biomedical measurement; pressure measurement; 0 to 2 MPa; Interlink pressure sensor; bony prominences; conductive polymer pressure sensor; electronics; feet; hysteresis; medical instrumentation; nonrepeatability; normal gait; resistance-versus-pressure characteristic;
Conference_Titel :
Engineering in Medicine and Biology Society, 1988. Proceedings of the Annual International Conference of the IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-0785-2
DOI :
10.1109/IEMBS.1988.95022
