Tail clearance automatic measurement system and tail clearance automatic measurement method

摘要

PPROBLEM TO BE SOLVED: To measure a tail clearance in real time, without causing excavation work to be interrupted. PSOLUTION: This tail clearance automatic measuring system is provided with an imaging means 10; a storage means 21 for storing pixel ratio Pf which is intrinsic to the imaging means, obtained from a separation distance between a plurality of reference positions and the imaging means, a reference height, and a pixel number corresponding to the reference height; a separation distance acquiring means 22 for acquiring the separation distance between the imaging means 10 and a segment 4; a pixel value reading means 23 for reading out the pixel value, corresponding to a reading reference point R of the segment 4; and a clearance computing means 24 for calculating the tail clearance, based on the pixel value, corresponding to the reading reference point R, the pixel value corresponding to a measuring reference point 3a on a skin plate 3, the separation distance obtained by the separation distance acquiring means 22, and the pixel ratio Pf. PCOPYRIGHT: (C)2009,JPO&INPIT