Control device for passive safety systems includes unit has facility wherein resistance value is determined from sensed current and sensed voltage based on which control unit activates switch element to break current conduction

摘要

The control device (1) for passive safety systems (6) includes a unit (3) for the sensing of the voltage and a device (4) for the sensing of the current in the wiring to the occupant protection system. A resistance value (R) is determined from the sensed current and sensed voltage and with a characteristic change of the resistance value on the ignition time point a switch element (8,9) in a control unit is switched to break the current conduction. The characteristic change of the resistance is a resistance increase. The evaluation of the resistance is effected by the control unit (10).