Robert Boschgmbh

Leonardo Kovacic

Hartmut Schumacher

Ruediger Karner

Rainer Gschwind-Schilling

Eugen Wang

A circuit for processing a wake-up signal, which is usable for activating electrical devices. The circuit includes an evaluation circuit, which checks an applied wake-up signal for its validity, and an output driver circuit, which outputs a processed wake-up signal when the evaluation circuit evaluates the applied wake-up signal as valid. The evaluation circuit has a comparator, which compares the applied wake-up signal to at least one threshold value for the evaluation. The evaluation circuit includes an input circuit and a switchable constant voltage source via which at least one criterion for evaluating the applied wake-up signal is adjustable in each case. The comparator is a multi-channel, integrated comparator circuit, and the individual channels of the integrated comparator circuit evaluating one criterion of an applied wake-up signal in each case.

Circuit for processing a wake-up signal

A control unit for a restraint system in a vehicle, including an evaluation and control unit and at least one external ignition circuit interface to which a squib for activating the restraint system is connected via a go-line and a return line, the evaluation and control unit cyclically ascertaining, by measuring, an instantaneous ohmic loop resistance of the corresponding ignition circuit and comparing this with at least one stored threshold value. The evaluation and control unit determines an instantaneous temperature in the vehicle interior, close to the time for the measured value detection for ascertaining the ignition circuit loop resistance, the evaluation and control unit carrying out a temperature compensation of the ascertained ignition circuit loop resistance for the go-line and return line of the connected ignition circuit based on the instantaneous temperature in the vehicle interior, the go-line and return line being situated outside the control unit.

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Vaihingen Enz, Germany

Leonardo Kovacic