Title:
PROPULSION APPARATUS POSITION-MEASURING SYSTEM
Document Type and Number:
Japanese Patent JP2007212222
Kind Code:
A
Abstract:
To acquire precise position of a propulsion tube by processing an image of a plurality of targets, even if the propulsion tube rolls.
When a measurement device 16-(i-1) rolls, a measurement device 16-i that is located one unit behind the measurement device 16-(i-1), with respect to the propulsion direction X calculates coordinates (X3, Y3) of the middle point between two forward circular targets 34a, 36a disposed at the measurement device 16-(i-1) and the rolling angle ϕ of the measurement device 16-(i-1). The measurement device 16-(i-1) transforms the images 104, 106 associated with the rolling into images 100, 102 before rolling, on the basis of the calculation result so as to accurately acquire an included angle θiin the measurement device 16-(i-1). Accordingly, the position of the propulsion tube is precisely acquired, even if the measurement device 16-(i-1) rolls.
COPYRIGHT: (C)2007,JPO&INPIT
Inventors:
NAGAI KATSUYUKI
OGAWA KUNITOSHI
TANAKA MASAYOSHI
TOSHI MASUKAZU
INABA TOMIO
Application Number:
JP2006030939A
Publication Date:
August 23, 2007
Filing Date:
February 08, 2006
Assignee:
SOKKIA CO LTD
SOOKI KK
International Classes:
G01C15/00; E21D9/06
Domestic Patent References:
| JP2004184094A | 2004-07-02 | | | |
| JPH10293028A | 1998-11-04 | | | |
| JP2003075116A | 2003-03-12 | | | |
| JP2007033105A | 2007-02-08 | | | |
Attorney, Agent or Firm:
Hideto Yagi
Osamu Shimizu
