RECOGNITION METHOD AND RECOGNITION SYSTEM USING BARCODE, AND CONTROL METHOD AND CONTROL SYSTEM USING BARCODE

摘要

<P>PROBLEM TO BE SOLVED: To propose a recognition method using a barcode which determines the distance to a distant recognition object without being largely affected by the inclination of a surface of the recognition object and which determines the distance to the recognition object at a distance outside the measurement range of an ultrasonic signal or an infrared signal. Ž<P>SOLUTION: A barcode group 13 including three barcodes 13a to 13c having different sizes is appended to a wall surface 12a at the front of a rectilinear path 11a where a robot 1 travels. The sizes of the barcodes 13a to 13c are set so that the maximum distance that is determined by a CCD camera 7 installed on the robot 1 is La to Lc. The CCD camera 7 of the robot 1 traveling along the rectilinear path 11a performs the scanning in a perpendicular direction to pick up an image of the barcode group 13. A time point at which each barcode turns from indeterminable to determinable or vice versa is detected to grasp the distance between the robot 1 and the wall surface 12a at the turning time point. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž