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1. WO2008080169 - VITAL SOLID STATE CONTROLLER

Publication Number WO/2008/080169
Publication Date 03.07.2008
International Application No. PCT/US2007/088849
International Filing Date 26.12.2007
IPC
B61L 13/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
61RAILWAYS
LGUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
13Operation of signals from the vehicle or by the passage of the vehicle
CPC
B61L 27/0061
BPERFORMING OPERATIONS; TRANSPORTING
61RAILWAYS
LGUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
27Central traffic control systems ; ; Track-side control or specific communication systems
0061Track-side multiple control systems, e.g. switch-over between different systems, "2 out of 3"-systems
Applicants
  • CENTRAL SIGNAL, LLC [US]/[US] (AllExceptUS)
  • BALDWIN, David [US]/[US] (UsOnly)
  • ASHRAF, Ahtasham [PK]/[US] (UsOnly)
Inventors
  • BALDWIN, David
  • ASHRAF, Ahtasham
Agents
  • FRITZ, Jonathan, M.
Priority Data
60/871,60922.12.2006US
60/884,93015.01.2007US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) VITAL SOLID STATE CONTROLLER
(FR) DISPOSITIF DE COMMANDE D'ÉTAT SOLIDE VITAL
Abstract
(EN)
A vital programmable logic device (VPD) is provided having at least two microprocessors. The VPD is configured to provide failsafe operation of a vital control system while operating in a closed circuit environment. In at least one embodiment of the present invention, railroad grade crossing signals are controlled by the VPD.
(FR)
L'invention concerne un dispositif de logique programmable vital (VPD) ayant au moins deux microprocesseurs. Le VPD est configuré pour permettre un fonctionnement sans défaut d'un système de commande vital tout en fonctionnant dans un environnement en circuit fermé. Dans au moins un mode de réalisation de la présente invention, des signaux de passage à niveau sont commandés par le VPD.
Also published as
Latest bibliographic data on file with the International Bureau