To solve the problem in a measuring system using a laser scanner that the shape of a terrestrial object whose thickness is thin, such as a sign board installed beside a railway track, cannot be captured with certain accuracy.SOLUTION: A three-dimensional measuring device 1, mounted on a vehicle capable of traveling on a railway track, includes laser scanners 2a, 2b for acquiring a laser point group. Regarding the widthwise position of a railway track, the laser scanner 2a is at the position of one rail 32a and the laser scanner 2b is at the position of the other rail 32b. Regarding the extensional position of the railway track, the laser scanners 2a, 2b are at mutually different positions. The extensional component of direction vector of laser beams radiated in the same direction as seen from the extension direction of the railway track is in opposite directions between the laser scanner 2a and the laser scanner 2b.SELECTED DRAWING: Figure 3
【課題】レーザースキャナを用いた計測システムにおいて、線路脇に設けられる標識板などの厚みが薄い地物は形状を正確に捕捉しにくい。【解決手段】3次元計測装置1は鉄道の線路上を走行可能な車両に搭載され、レーザー点群を取得するレーザースキャナ2a,2bを有する。線路の幅方向の位置に関し、レーザースキャナ2aは一方のレール32aの位置にあり、レーザースキャナ2bは他方のレール32bの位置にある。線路の延伸方向の位置に関し、レーザースキャナ2a,2bは互いに異なる位置にある。線路の延伸方向から見て同じ方向に照射されるレーザービームの方向ベクトルの延伸方向の成分は、レーザースキャナ2aとレーザースキャナ2bとで逆向きである。【選択図】図3
THREE-DIMENSIONAL MEASURING DEVICE
3次元計測装置
2019-01-31
Patent
Electronic Resource
Japanese
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