Faculty Collaboration Database

A microprocessor-based data-acquisition system for measuring plantar pressures from ambulatory subjects. IEEE Trans Biomed Eng 1991 Jul;38(7):710-4

Date

07/01/1991

Pubmed ID

1879865

DOI

10.1109/10.83573

Scopus ID

2-s2.0-0026190726 (requires institutional sign-in at Scopus site)   54 Citations

Abstract

We have developed a portable microprocessor-based data-acquisition system to measure discrete plantar pressures within the shoe from ambulatory subjects. The system offers improved accuracy, repeatability, portability, and flexibility not available in current commercial systems. It consists of 14 conductive polymer pressure sensors, 14 analog amplifiers, an 8-bit analog-to-digital converter, a microprocessor, 120 kbytes of memory space, and a parallel I/O interface. Seven pressure sensors are embedded within each insole and located at the posterior heel, anterior heel, the four metatarsal heads, and hallux of each foot. The system is capable of continuously sampling 14 channels of pressure data for 7 min at a 20-Hz sample rate. The recorded data are downloaded into a microcomputer for further processing, analysis, and display. Foot pressures have been acquired from a sensate subject during multiple walking trials.

Author List

Zhu HS, Harris GF, Wertsch JJ, Tompkins WJ, Webster JG

Author

Gerald Harris PhD Director in the Orthopaedic Research Engineering Center (OREC) department at Marquette University

MESH terms used to index this publication - Major topics in bold

Diagnosis, Computer-Assisted
Foot Diseases
Humans
Male
Microcomputers
Monitoring, Physiologic
Pressure
Reference Values