Optical velocimeter probe

Details Optical velocimeter probe Optical velocimeter probe

1997-06-16

1999-01-05

Hellner, Mark

Optics: measuring and testing

Velocity or velocity/height measuring

With light detector

324 7619, G01P 0336, G01R 2300

Patent

active

058568654

ABSTRACT:
An optical velocimetrical probe comprises means to illuminate a volume of measurement in which particles may pass, and optical detection means to produce an electrical signal x(t) in response to the passage of a particle in the illuminated volume. It also comprises means to extract information representing the velocity v of particles from the electrical signal, these means comprising,in particular, means to compute the density of probability p(x,.theta.) of the signal vector x(t), means to determine a frequency representing the velocity v for which this probability is the maximum.

REFERENCES:
patent: 4786168 (1988-11-01), Meyers et al.
patent: 4984188 (1991-01-01), Kato
patent: 5005144 (1991-04-01), Nakajima et al.
patent: 5313263 (1994-05-01), Abbiss et al.
patent: 5526109 (1996-06-01), Johnson
patent: 5608522 (1997-03-01), Breda
Yutaka Fukuoka, et al., "Application of Learning Signal Processing System on RBC Velocity Measurement Using Laser Doppler Technique", Proceeding of the Annual Conference of the Engineering in Medicine and Biology Society, vol. 12, No. 3, Nov. 1, 1990, pp. 1410-1412.

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