公开(公告)号：WO2018220268A1

公开(公告)日：2018-12-06

申请号：PCT/FI2018/050373

申请日：2018-05-18

Applicant: OULUN YLIOPISTO

Inventor： KAIKKONEN, Ville ,  MÄKYNEN, Anssi ,  ARSTILA, Timo ,  KANANEN, Timo

IPC: G01W1/14 ,  B64D15/20 ,  G01N15/02

Abstract: The invention relates to a measurement system (100) for establishing a forecast for structural icing of a mechanical structure. The measurement comprises a digital in-line holography apparatus (1) comprising a monochromatic light source (12) and matrix detector (22) to record diffraction images (25a) due to cloud droplets (25, 26, 27). A computer (3) or the server (4) is configured to calculate sizes and number of the cloud droplets (25, 26, 27) by utilizing the recorded diffraction images (25a) and for calculating a liquid water content and median volume diameter of the cloud droplets detected in the open measurement space. The computer or server (4) combines the liquid water content and median volume diameter calculation results with meteorological measurement data, speed of the moving mechanical structure (51) and 3D -model information of the mechanical structure (51) for making a forecast about structural icing speed of the moving mechanical structure (51).