Electronically controlled seat belt module

The seat belt module is electronically controlled using magneto-rheological fluid. A CPU delivers a signal to an electromagnetic coil within the module at the beginning of a crash to cause the viscosity of the magneto-rheological fluid to increase sufficient to lock the spool on which the seat belt...

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Bibliographic Details
Main Authors PARIZAT, AMNON, TARCZYNSKI, MAREK
Format Patent
LanguageEnglish
French
German
Published 29.09.2004
Edition7
Subjects
PERFORMING OPERATIONS
TRANSPORTING
VEHICLES IN GENERAL
VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
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Summary:The seat belt module is electronically controlled using magneto-rheological fluid. A CPU delivers a signal to an electromagnetic coil within the module at the beginning of a crash to cause the viscosity of the magneto-rheological fluid to increase sufficient to lock the spool on which the seat belt is wound against rotation. Thereafter, a subsequent signal is delivered by the CPU to the coil to reduce the magnetic field and the viscosity of the magneto-rheological fluid allowing the spool to be unwound in a programmed manner so as to reduce the forces imposed on an occupant by the seat belt. The CPU may be pre-programmed in response to signals from sensors throughout the vehicle that deliver signals corresponding to the characteristics of the occupant and may be programmed in response to signals from these sensors and from an air bag to respond in real time.
Bibliography:Application Number: EP20030252242