METHOD AND APPARATUS FOR MEASURING RECTANGULAR PARALLELEPIPED

Japanese Patent JP3948381

B2

PROBLEM TO BE SOLVED: To provide a rectangular parallelepiped measurement method for measuring the placement position of a rectangular parallelepiped installed stationary manner, and the size of the entire rectangular parallelepiped.
SOLUTION: This rectangular parallelepiped instrumentation method measures the size or the placement position of the rectangular parallelepiped installed so that its bottom face is approximately parallel to xy plane, using a pulsed laser light emitted by a laser light generator provided outside the rectangular parallelepiped. The measurement method has a reflection position detection process and a calculation process. The rectangular parallelepiped is scanned by the pulsed laser light in two dimensions, and return lights, reflected by the rectangular parallelepiped, are received. The reflection position detection process detects each reflection position of the rectangular parallelepiped by the direction of emission of the pulsed laser light, and the time difference between the time of emission of the pulsed laser light and the time of reception of each return light of this pulsed laser light. The calculation process computes the magnitude or the placement position of the rectangular parallelepiped, on the basis of two or more reflection positions.

Koichiro Nagata
Hisamitsu Yutaka
Kiyohide Sekimoto

JP2002287953A

July 25, 2007

September 30, 2002

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Ishikawajima Harima Heavy Industries Co., Ltd.

G01B11/03; G01S17/10; G01S17/42; G01S17/89; (IPC1-7): G01B11/03; G01S17/42

JP2001050723A
JP2767340B2
JP59188509A
JP6241719A
JP6160060A

Hidekazu Miyoshi
Iwa Saki Kokuni
Kawamata Sumio
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu

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