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Proceedings Paper

Design and development of laser Doppler velocimetry based on DSP technique for blood flow measurement
Author(s): Yuan-Hsiang Lin; Yan-Yu Chen; Yuan Ho; Yi-Lin Li; Gwo-Jen Jan
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Paper Abstract

A graphic user interface and real-time laser Doppler velocimeter (LDV) based on the digital signal processor (DSP) had been designed and developed. The hardware setup included the Michelson inteferrrometer optics, photo-detector, current to voltage converter, AC amplifer and filtering circuits, as well as a DSP module. The software system on the Dsp module was also developed to access data and to perform the moment weighting algorithms. In addition, the processed data was transmitted to the personal computer and advanced analysis could be achieved. The velocity measurement using developed LDV device was calibrated by a mirror mounted on a linear vibrator. The outcomes presented high linearity and good accuracy. In vitro experiment employing this LDV system was also carried out. The results showed that the developed LDV instrument offered a flexible tool to investigate the blood flow of microcirculation system.

Paper Details

Date Published: 4 July 2000
PDF: 10 pages
Proc. SPIE 4082, Optical Sensing, Imaging, and Manipulation for Biological and Biomedical Applications, (4 July 2000); doi: 10.1117/12.390546
Show Author Affiliations
Yuan-Hsiang Lin, National Taiwan Univ. (Taiwan)
Yan-Yu Chen, National Taiwan Univ. (Taiwan)
Yuan Ho, National Taiwan Univ. (Taiwan)
Yi-Lin Li, National Taiwan Univ. (Taiwan)
Gwo-Jen Jan, National Taiwan Univ. (Taiwan)

Published in SPIE Proceedings Vol. 4082:
Optical Sensing, Imaging, and Manipulation for Biological and Biomedical Applications
Robert R. Alfano; Peng Pei Ho; Arthur E. T. Chiou, Editor(s)

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