REDUNDANT DATA BUS SYSTEM

A redundant data bus system has two data buses between which at least two failsafe control devices are connected. The two data buses operate with the same data bus protocol at essentially the same transmission frequency, and safety-related control messages are transmitted in parallel via both data b...

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Bibliographic Details
Main Authors SULZMANN, ARMIN, PAASCHE, SASCHA, SPIEGELBERG, GERNOT, ARMBRUSTER, MICHAEL, SCHWARZHAUPT, ANDREAS, REICHEL, REINHARD
Format Patent
LanguageEnglish
French
German
Published 09.07.2008
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PERFORMING OPERATIONS
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
TRANSPORTING
VEHICLES IN GENERAL
VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
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Summary:A redundant data bus system has two data buses between which at least two failsafe control devices are connected. The two data buses operate with the same data bus protocol at essentially the same transmission frequency, and safety-related control messages are transmitted in parallel via both data buses and processed in the control devices. Each control device performs a separate control task via assigned control software. Each control device has two microcomputers which operate independently of one another and which have software for both the first and the second control tasks. When one control device fails, the control task can also be performed by the other. One data interface is arranged between the two microcomputers, via which result data calculated from the safety-related control messages can be exchanged and compared with one another. Based on such comparison a decision means determines which microcomputer or control device carries out a control task.
Bibliography:Application Number: EP20050706899