Laser Doppler velocimetry for dense cross-sectional velocity distribution measurement using spatial encoding and non-mechanical scanning

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H04018
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Measurement engineering
• Research Institution: Kagawa University
• Principal Investigator: Maru Koichi 香川大学, 工学部, 准教授 (00530164)
• Co-Investigator(Kenkyū-buntansha): 藤井 雄作 群馬大学, 大学院理工学府, 教授 (80357904) ; 中津原 克己 神奈川工科大学, 工学部, 教授 (70339894)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 計測工学 / 計測機器 / 速度分布計測 / レーザドップラー速度計

Outline of Final Research Achievements

To establish a method for measuring a two-dimensional cross-sectional velocity distribution precisely and densely with a compact and reliable probe, we studied laser Doppler velocimetry using a combination of non-mechanical scanning and simultaneous multipoint measurement based on spatial encoding. We developed a technique for dense velocity distribution measurement with 48 measurement points and a signal acquisition/processing system for automated and high-speed measurement. In addition, we investigated a miniature probe using compact bulk optics and a waveguide-based integrated probe.

Free Research Field

光計測工学