Title :
A conductive polymer pressure sensor array
Author :
Maalej, N. ; Webster, J.G. ; Tompkins, W.J. ; Wertsch, J.J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA
Abstract :
A 4×4 array of four quad (5 mm×5 mm) Interlink conductive polymer pressure sensors was designed. The array was embedded in a shoe insole under the second metatarsal head of a subject. The sensors were calibrated, and a microprocessor-based portable data-acquisition system was used to monitor the pressure distribution under the second metatarsal head during normal gait. A center-of-pressure algorithm was used to estimate the maximum metatarsal head movement for one subject. A value of 5 mm was obtained, with a maximum error of ±1.5 mm. Hence the diameter of the sensor must be at least 7 mm to cover the peak pressure area under the metatarsal heads
Keywords :
biomechanics; biomedical equipment; biomedical measurement; conducting polymers; pressure transducers; center-of-pressure algorithm; conductive polymer pressure sensor array; microprocessor-based portable data-acquisition system; normal gait; peak pressure area; pressure distribution; second metatarsal head; shoe insole; Calibration; Conductive films; Footwear; Head; Hysteresis; Monitoring; Polymer films; Sensor arrays; Sensor phenomena and characterization; Silver;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.96114
