COORDINATE CONVERSION SYSTEM AND WORK MACHINE - HITACHI CONSTRUCTION MACH CO

Title:

COORDINATE CONVERSION SYSTEM AND WORK MACHINE

Document Type and Number:

WIPO Patent Application WO/2020/059220

Kind Code:

A1

Abstract:

A coordinate conversion system provided with a controller for converting geographic coordinate system coordinates of an arbitrary point into site coordinate system coordinates, wherein the coordinate conversion system is provided with an imaging device for capturing an image of a reference point, and a GNSS antenna for receiving a navigation signal. The controller calculates the geographic coordinate system coordinates of the imaging device on the basis of the navigation signal received by the GNSS antenna and the distance between the imaging device and the GNSS antenna, calculates the azimuth and distance from the imaging device to the reference point by applying image processing to the image of the reference point captured by the imaging device, calculates the geographic coordinate system coordinates of the reference point on the basis of the calculated distance and azimuth from the imaging device to the reference point and the calculated geographic coordinate system coordinates of the imaging device, and calibrates a coordinate conversion parameter on the basis of the calculated geographic coordinate system coordinates of the reference point and the site coordinate system coordinates of the reference point.

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Inventors:

HAYAKAWA NAOKI (JP)
IZUMI SHIHO (JP)

Application Number:

PCT/JP2019/022620

Publication Date:

March 26, 2020

Filing Date:

June 06, 2019

Export Citation:

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Assignee:

HITACHI CONSTRUCTION MACH CO (JP)

International Classes:

G01S19/48; E02F9/26

Domestic Patent References:

WO2016148309A1

2016-09-22

Foreign References:

JP2017015598A	2017-01-19
JP2001055762A	2001-02-27
US20140277956A1	2014-09-18
JP2012202061A	2012-10-22

Other References: