The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 25, 2003
Filed:
Aug. 15, 2001
Jens Braband, Braunschweig, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
The invention makes it possible to control a multiplicity of trains on a extensive railway systems using comparatively few complex means without it being necessary for there to be any knowledge of the route on the trains or any locating devices for the trains mounted along the route. For the trains to determine their own position, a satellite locating method is preferably used, which permits the travel location of a train, and thus its current stopping range, to be determined with sufficient precision. By determining such stopping ranges for the trains and by prescribing extensive route areas which apply for the trains, in each case in the form of polygons in a uniform coordinate system, it is possible reliably to detect any collisions of these polygons in order then to request in good time the assignment of current route areas or to start braking.