Title :
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
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;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2001. IMTC 2001. Proceedings of the 18th IEEE
Conference_Location :
Budapest
Print_ISBN :
0-7803-6646-8
DOI :
10.1109/IMTC.2001.928898
