Siemens S.a.s

Siemens Transportation S.a.s.

Benoit Fumery

Eric Chenu

Didier Essame

Nicolas Renard

Philippe Forin

Raphaëlle De Lajudie

Bénédicte Chochois Kartmann

A communication system adapted for a vehicle includes a network for communication between at least two communication interfaces respectively connected to a first controller which manages/runs a control application and a second controller which also manages/runs the control application. The communication interfaces have, per controller, at least one communication port from which a communication link is possible. The communication link is a PLC (Power Line Communication) link having at least two electrically conductive links connected to each of the respective communication ports through at least one coupling transformer, for a control application transmission between the two communication interfaces.

High availability network system

A secure system has two computers that are intrinsically safe and implements a method for verifying the redundancy for the outputs where a very high level of safety is required. The method makes it possible to handle inconsistencies in the outputs of the two computers when they are working in redundant mode. Each computer receives the output states determined by the other computer and compares them to states calculated. A state of divergent operation is detected if the computers have determined two different states for a single output. If a divergence is detected for at least one output, the state of that output is determined by preventing any transition from a restrictive state to a permissive state.

Method for verifying redundancy of secure systems

Growing community of inventors

Bures sur Yvette, France

Benoit Fumery