Siemens Aktiengesellschaft

Helge Graβhoff

Thomas Fischer

Bernd Schörwerth

Koutaro Machidera

A device and a method trigger a vehicle occupant protection device of a motor vehicle. The device has a plurality of sensors that are disposed at a first location within the motor vehicle, and an evaluation device that is disposed at a second location within the passenger car. The plurality of signals that are assigned to the plurality of sensors are transmitted from the first location to the evaluation device via a first and a second transmission link of the device.

Device and method for triggering a vehicle occupant protection device of a motor vehicle

The invention relates to a control unit for activating an occupant protection means in a motor vehicle and to a method for monitoring the proper functioning of a control unit preferably of this type. To this end, the control unit comprises a first and a second arithmetic unit (R, R) as well as an activating unit (AE). A number of logical AND gates (AND, AND; AND) are connected on the input side to the clock signals (clk, clk, clk) of the arithmetic units (R, R) respectively assigned thereto or to the activating unit (AE). The signal output of each logical AND gate (AND, AND; AND) is fed to a respectively assigned pulse count comparator unit (PZVE, PZVE) whose respective signal output is, in turn, connected to an input of a respectively assigned resetter (RES, RES). A resetter (RES, RES) of each arithmetic unit (R, R) always resets the respective other arithmetic unit (R, R) when the pulse count comparator unit (PZVE, PZVE) respectively assigned thereto detects an inadmissible number of pulses per unit of time in the output signal (clk, clk, clk) of the respective AND gate (AND, AND; AND).

Control unit for activating an occupant protection means in a motor vehicle and method for monitoring the proper functioning of a control unit preferably of this type

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Wuppertal, Germany

Helge Graβhoff