Autonomously navigating robot system

• US 20020011367A1
• Filed: 07/27/2001
• Published: 01/31/2002
• Est. Priority Date: 07/27/2000
• Status: Abandoned Application

• Current Assignee: Gmd-Forschungszentrum Informaionstechnik Gmgh
• Original Assignee: Gmd-Forschungszentrum Informaionstechnik Gmgh
• Inventors: Kolesnik, Marina
• Application Number:
  US09/915,350
• Publication Number:
  US 20020011367A1
• Time in Patent Office: Days
• US Class Current: 180/168
• CPC Class Codes: G05D 1/0248 in combination with a laser lasers per se H01S

Abstract

In an autonomously navigating robot system orientation is effected on the basis of a current laser projected line pattern (44,48) taken by a camera (20) and on the basis of previous examinations of the course and arrangement of reflected line patterns (44,48) obtained during projection of said line patterns by means of a laser projector (18) in different known directions in the surrounding.

Claims

1. Autonomously navigating robot system comprising:

a chassis having a driving device for maneuvring said chassis in a surrounding,

a device arranged on said chassis for generating electromagnetic radiation and directed emission of said radiation into the surrounding,

wherein the electromagnetic radiation is emitted in the form of at least two bars extending relative to each other at an angle of non-zero,

a device arranged on the chassis for detecting a pattern of the electromagnetic radiation reflected by the surrounding,

wherein said detection device is staggered relative to the generation and emission device, and

an evaluation unit for evaluation the course and the arrangement of the bars of the bar pattern detected by the detection device,

wherein the evaluation unit determines, on the basis of previous examinations of the course and arrangement of bar patterns reflected by the surrounding when electromagnetic radiation, in the form of at least two bars extending at an angle to each other has been emitted into the surrounding in different known directions, the actual orientation, corresponding to the momentarily detected bar pattern, of the chassis in the surrounding, and actuates the driving device of the chassis to attain a desired orientation.

2. Autonomously navigating robot system according to claim 1, wherein the evaluation unit determines the actual orientation of the chassis on the basis of the distortion of the bars of the detected bar pattern.

3. Autonomously navigating robot system according to claim 1, wherein the evaluation unit determines the actual orientation of the chassis on the basis of the curvature and/or the direction of the curvature of the bars of the detected bar pattern.

4. Autonomously navigating robot system according to claim 1, wherein the generation and emission device emits the electromagnetic radiation in the form of two lines orthogonally intersecting each other in their centers.

5. Autonomously navigating robot system according to claim 1, wherein the electromagnetic radiation is visible light.

6. Autonomously navigating robot system according to claim 1, wherein the generation and emission device comprises a laser source.

7. Autonomously navigating robot system according to claim 3, wherein the evaluation unit determines the actual orientation of the chassis on the basis of the distance between one or a plurality of ends of each bar and a predetermined plane or between one or a plurality of ends and an intermediate point of each bar, said distance being orientated transversely to the course of a bar of the detected bar pattern.

8. Autonomously navigating robot system according to claim 7, wherein the evaluation unit determines the actual orientation of the chassis on the basis of an examination of the position and/or the size of the maximums and minimums of each bar of the detected bar pattern.

9. Autonomously navigating robot system according to claim 1, wherein the surrounding is regularly structured and/or contains geometrically classified objects.

10. Autonomously navigating robot system according to claim 9, wherein the surrounding is a pipe system made up of pipes with round cross-section, in particular generally circular pipes which intersect each other, branch off, are curved and/or extend from at least one inspection well extending transversely to their courses.

11. Autonomously navigating robot system according to claim 10, wherein the chassis, in its desired orientation, is directed into the longitudinal direction of a pipe.