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KMID : 0372919960170040499
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Journal of Biomedical Engineering Research
1996 Volume.17 No. 4 p.499 ~ p.506
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Design and Evaluation of Blood flow Measurement Using Self-mixing type Semiconductor Laser
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김덕영
이진/김세동/고한우/김성환
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Abstract
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Blood flow velocimeter is an essential device to measure the blood flow in skin tissue. In this study, we developed a high-speed LDV(laser Doppler Velocimeter) that has real time processing capability using a DSP(digital signal processing) chip and is able to continuously measure information about blood-flow based on a noninvasive method using self-mixing type laser diode. This LDV system has a simpler structure than any other typical blood flow velocimeter and is composed of new self-mixing probe, stabilizer circuits DSP board, and interf’’’’ace boule We measured velocity of speaker-unit by operational frequencies to identify Doppler effect of this system, performed clinical experiment on bare finger tip and compared it with a commercial euipment BPM403A(USA).
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KEYWORD
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