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半導体レーザ2焦点流速計の研究


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Title: 半導体レーザ2焦点流速計の研究
Other Titles: A Study of the Semiconductor Laser 2-Focus Velocimeter
Authors: 植木, 弘信 / 石田, 正弘 / 光武, 忠晴
Authors (alternative): Ueki, Hironobu / Ishida, Masahiro / Mitsutake, Tadaharu
Issue Date: 25-Feb-1991
Publisher: 日本機械学会
Citation: 日本機械学會論文集. B編 57(534) p.516-519, 1991
Abstract: A compact laser velocimeter was newly developed based on the principle of a flight-time measurement. A semiconductor laser with the maximum power of 40mW and wavelength of 830nm was utilized as a light source, and photodiodes were used to detect the scattered light from seeding particles. The time-of-flight between 2 focus points was measured by a digital counter and was transferred to a personal computer to calculate the flow velocity. The air flow velocity at a nozzle exit was measured by this semiconductor laser 2-focus velocimeter and was compared with the results measured simultaneously by a Pitot tube. Consequently, it was confirmed that a laser 2-focus velocimeter by means of a semiconductor laser could be a useful and low-cost optical measuring instrument.
Keywords: Fluid Engineering / Flow Measurement / Semiconductor Laser / Laser 2-Focus Velocimeter
URI: http://hdl.handle.net/10069/6739
ISSN: 03875016
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/6739

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