A digital optical-fiber finger blood volume meter

Author

Lygouras, J.N. ; Tarchanidis, K.N. ; Tsalides, Ph G.

Author_Institution

Electron. Lab., Democritus Univ. of Thrace, Xanthi, Greece

Volume

1

fYear

2001

fDate

21-23 May 2001

Firstpage

648

Abstract

This paper presents a technique to design a digital optical-fiber photoplethysmograph. This noninvasive method is based on the measurement of the intensity of an infrared-light beam, which penetrates the index finger. Digital techniques are used to produce the transmitted signal and to demodulate the received signal. Optical fibers are used to transfer the light to and from the sampling point. Frequency analysis of the peripheral volume pulse-wave signal is performed off-line. The power content in the harmonics of this pulse wave may be a useful measure of aging and vascular disease

Keywords

bio-optics; biomedical equipment; demodulation; digital instrumentation; direct digital synthesis; fibre optic sensors; haemodynamics; intensity modulation; medical signal processing; plethysmography; volume measurement; DDS; DSP; IR light beam intensity measurement; demodulation; digital optical-fiber photoplethysmograph; finger blood volume meter; harmonics power content; intensity modulation; noninvasive method; off-line frequency analysis; positive DC offset; sine wave; vascular disease; volume pulse-wave signal; Blood; Fingers; Frequency; Optical design; Optical design techniques; Optical fibers; Optical pulses; Pulse measurements; Sampling methods; Signal analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2001. IMTC 2001. Proceedings of the 18th IEEE

Conference_Location

Budapest

ISSN

1091-5281

Print_ISBN

0-7803-6646-8

Type

conf

DOI

10.1109/IMTC.2001.928898

Filename

928898