Pixel1.gif (51 bytes)
Pixel1.gif (51 bytes)
Pixel1.gif (51 bytes) Main Page Pixel1.gif (51 bytes)
About DSP Laboratory
People
Research
Publications
Courses
Pixel.gif (52 bytes)
Contact Us
Sponsors
Credits
Pixel.gif (52 bytes)
Search
Go to FIU's Homepage

 

 Pixel1.gif (51 bytes)

 

Curve.gif (104 bytes) Pixel1.gif (51 bytes)

Delay Measurement in Dual Blood Volume Pulse Monitoring Using Adaptive Signal Processing Techniques

Pixel1.gif (51 bytes)

Abstract:
 
"Delay Measurement in Dual Blood Volume Pulse Monitoring Using Adaptive Signal Processing Techniques", (1997)
Armando B. Barreto, Cesar D. Aguilar and E. Elise Jakubzick

ABSTRACT: Two adaptive signal processing algorithms are applied to the estimation of the relative delay between Blood Volume Pulse (BVP) signals collected by independent sensors on a subject's index finger. Both the LMS Adaptive Predictor and the Adaptive Delay System are evaluated for the delay estimation in synthetic test signals and on actual pairs of BVP signals. The short-term variations in the relative delay of the BVP signals within a data record are studied and proposed as a key factor in determining the better performance of the Adaptive Delay System. Changes in the estimated relative delay between the BVP signals of subjects before and after exercise are shown. It is proposed that these changes are associated with the modifications introduced in the cardiovascular system of the subjet by exercise and can, therefore, be used to monitor the level of exercise achieved by a subject at different points in an exercise session.