FLUID FLOW MEASUREMENT SYSTEM, FLUID FLOW MEASUREMENT METHOD, AND COMPUTER PROGRAM

WIPO Patent Application WO/2006/006250

A1

A fluid flow measurement system comprising a sheet-like light-emitting device that emits a sheet-like light into a flow field of a fluid containing particles; a CMOS image sensor that captures an image on a sheet emitted by the sheet-like light-emitting device and that can convert the image signal into digital data; timing control means that puts the sheet-like light-emitting device and the CMOS image sensor into synchronized operation; and image processing means that compares and analyzes the brightness pattern distributions of images on the sheet captured by the CMOS image sensor at various times, for measuring the movement direction and movement amount of the particles. As a need arises, a transmission line is used or the imaging interval is shortened by using two CMOS image sensors and a beam splitter. This makes it possible to use PIV even under a condition more rigorous than conventional, for example, under a condition where the amount of light is insufficient, the system is in a radiation environment, or the flow speed is high.

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MORI MICHITSUGU (JP)
TEZUKA HIDEAKI (JP)

PCT/JP2004/010266

January 19, 2006

July 13, 2004

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TOKYO ELECTRIC POWER CO (JP)
MORI MICHITSUGU (JP)
TEZUKA HIDEAKI (JP)

G01P5/20; (IPC1-7): G01P5/20

JP2002022759A	2002-01-23
JP2004177312A	2004-06-24
JP2004096497A	2004-03-25
JPH0735764A	1995-02-07
JPH04361162A	1992-12-14
JPH11211743A	1999-08-06

Mugishima, Takashi (3rd Floor 1-5-4, Nihonbashi Kakigara-ch, Chuo-ku Tokyo, JP)

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