×

ROBOT SYSTEM AND CALIBRATION METHOD

  • US 20140288710A1
  • Filed: 03/19/2014
  • Published: 09/25/2014
  • Est. Priority Date: 03/19/2013
  • Status: Abandoned Application
First Claim
Patent Images

1. A robot system, comprisinga robot arm;

  • a camera configured to photograph a workpiece;

    a calibration jig with a marker that allows image recognition; and

    a calibration apparatus configured to derive a correlation between camera coordinates and robot coordinates, the camera coordinates being coordinates in an image photographed by the camera, the robot coordinates being coordinates using the robot arm as a reference, whereinthe robot arm is configured to have a posture corresponding to a relative position of the camera with respect to the marker,the calibration apparatus includes;

    an arm controller configured to control the robot arm to change the relative position of the camera with respect to the marker, so as to set a plurality of photographing positions;

    a camera-coordinate acquirer configured to acquire the camera coordinates of the marker to be obtained by photographing in the plurality of photographing positions;

    a posture-information acquirer configured to acquire information of the posture of the robot arm when the marker is photographed by the camera in the plurality of photographing positions; and

    a correlation derivation unit configured to derive the correlation between the camera coordinates and the robot coordinates based on the camera coordinates acquired by the camera-coordinate acquirer and the posture information acquired by the posture-information acquirer.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×