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:
Sep. 08, 2015
Filed:
Nov. 12, 2013
Thales Canada Inc, Toronto, Ontario, CA;
Thales Canada Inc., Toronto, Ontario, CA;
Abstract
A system and method provide vital shutdown of a remote slave unit linked by a fiber optic connection to a local, checked redundant master unit with two paired computers. Each computer sends a life signal to an associated local vital supervision card (VSC) and copper to fiber converter (C/F converter) for transmission via fiber to a corresponding fiber to copper converter (F/C converter) on the slave unit, then to a corresponding remote VSC. Each local VSC controls power to a corresponding second local VSC-associated C/F converter, and each remote VSC controls power to a corresponding second remote VSC F/C converter. A VSC detecting an incorrect life signal signature removes power to the corresponding controlled converter and, optionally, to a respective local or remote I/O rack, thereby shutting down the slave unit.