Robert Boschgmbh

Rainer Zuschlag

Hartmut Schumacher

Michael Haug

Ralph Weinmann

Simon Oberneder

A monitoring set-up to detect supply-line faults for a control unit, including at least two internal current-carrying supply lines, which are redundant with respect to each other, are situated inside of the control unit, and are connected electrically, on one end, to external supply lines, respectively, and, on the other end, to a common, internal supply-potential layer of the control unit; a signal detector, which inductively picks up a flow of current through the individual internal supply lines and outputs at least one corresponding measuring signal; and an evaluation and control unit, which evaluates the at least one measuring signal to detect supply-line faults. A method of detecting supply-line faults for a control unit, using such a monitoring set-up, is also described.

Monitoring set-up to detect supply-line faults for a control unit

A method for recognizing a usability of a control device of a safety device in a vehicle includes: applying a voltage to the control device; acquiring a voltage curve or a current curve at the control device; and recognizing a usability of the control device as a function of the acquired voltage curve or of the acquired current curve. In particular, the correct polarity of an inductive actuator having a freewheeling diode is recognized, because in the case of incorrect polarity the inductive actuator is bridged by the freewheeling diode.

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Ludwigsburg, Germany

Rainer Zuschlag