Design and development of laser Doppler velocimetry based on DSP technique for blood flow measurement

Yuan-Hsiang Lin; Yan-Yu Chen; Yuan Ho; Yi-Lin Li; Gwo-Jen Jan

doi:10.1117/12.390546

4 July 2000 Design and development of laser Doppler velocimetry based on DSP technique for blood flow measurement

Yuan-Hsiang Lin, Yan-Yu Chen, Yuan Ho, Yi-Lin Li, Gwo-Jen Jan

Proceedings Volume 4082, Optical Sensing, Imaging, and Manipulation for Biological and Biomedical Applications; (2000) https://doi.org/10.1117/12.390546
Event: Photonics Taiwan, 2000, Taipei, Taiwan

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.

Citation Download Citation

Yuan-Hsiang Lin, Yan-Yu Chen, Yuan Ho, Yi-Lin Li, and Gwo-Jen Jan "Design and development of laser Doppler velocimetry based on DSP technique for blood flow measurement", Proc. SPIE 4082, Optical Sensing, Imaging, and Manipulation for Biological and Biomedical Applications, (4 July 2000); https://doi.org/10.1117/12.390546

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