Accession Number : ADD016184

Title :   Doorway Transit Navigational Referencing System.

Descriptive Note : Patent, Filed 26 Feb 92, patented 4 Jan 94,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Everett, Hobart R

Report Date : 04 Jan 1994

Pagination or Media Count : 11

Abstract : A system of navigational referencing for a robot moving within a defined space is provided. A database contains x-y coordinate positional information on a plurality of doorway openings in terms of an x-y coordinate system. A mobile robot is provided that has the capability to access the database, define its location in terms of an approximate position within the defined space, and sense the presence of one of the plurality of doorway openings. The robot is positioned and moved along a path that traverses the one doorway opening at a known speed. The doorway opening's top door frame is detected from first and second sensor positions on the robot. The first and second sensor positions are separated by a known distance along a line orthogonal to the path that traverses the one doorway opening.

Descriptors :   *ROBOTS, *NAVIGATION, *PATENTS, ACCESS, COORDINATES, DATA BASES, MOBILE, OPENINGS, PATHS

Subject Categories : Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE