Data transmission method and system in a motor vehicle occupant protection system

According to the invention, impact sensors are repeatedly interrogated during a polling mode and have to actively reply by emitting current pulses. If a sensor does not reply it is selectively addressed and can at that point signal a desired message. The master unit has full communications control o...

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Bibliographic Details
Main Authors ZELGER CHRISTIAN, SWART MARTEN
Format Patent
LanguageEnglish
Published 17.08.2004
Edition7
Subjects
AMMUNITION
BLASTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
HEATING
LIGHTING
MECHANICAL ENGINEERING
PERFORMING OPERATIONS
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
TRANSPORTING
VEHICLES IN GENERAL
VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
WEAPONS
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Summary:According to the invention, impact sensors are repeatedly interrogated during a polling mode and have to actively reply by emitting current pulses. If a sensor does not reply it is selectively addressed and can at that point signal a desired message. The master unit has full communications control over the bus so that data collisions can be avoided and very rapid transmission of the sensor signal is achieved. The master unit can change the communication priorities at any time.
Bibliography:Application Number: US20010914848