Document Type
Thesis
Date of Award
5-31-1992
Degree Name
Master of Science in Biomedical Engineering - (M.S.)
Department
Biomedical Engineering Committee
First Advisor
Peter Engler
Second Advisor
Bernard Friedland
Third Advisor
Eugene I. Gordon
Fourth Advisor
David S. Kristol
Abstract
A new method of measuring range for gait analysis is described. The method is based on a coherent measurement of the phase shift of an ultrasonic signal as a function of range.
A prototype of the ranging system was breadboarded, tested, and found to have a relative accuracy of better than 0.5 mm over a range of 3 meters. The maximum range the system is at least 20 meters. The method used here is new and has not been found in the literature. Tt is demonstrated by experiments with a prototype system that can measure distance with a higher accuracy than the traditional pulse-echo method at a acoustic frequency of 40 KHz. A 3-dimensional system using one ultrasonic transmitter and at least four receivers to perform a 3-D ranging is discussed. Tt can be applied to many fields, including gait analysis.
Recommended Citation
Wu, Mu, "Ultrasonic ranging system for gait analysis" (1992). Theses. 2394.
https://digitalcommons.njit.edu/theses/2394
