In an acceleration sensor having two redundantly disposed micromechanical sensor elements having redundant signal paths with a separate A/D converter, a monitor includes a substitute circuit, integrated in the evaluation unit, for a sensor element, and a redundant further A/D converter, which converts the fixed, acceleration-independent output signal of the substitute circuit as a function of the shared operating parameters of all A/D converters to plausibilize the output signals of the acceleration sensor by means of the monitor. This makes it possible to detect faulty triggering of an airbag due to faults in both A/D converters.
Acceleration sensor having at least one micromechanical sensor element for an occupant protection system in a vehicle
2016-10-25
Patent
Electronic Resource
English
IPC: | G01P MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK , Messen der Linear- oder Winkelgeschwindigkeit, der Beschleunigung, der Verzögerung oder des Stoßes / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H03M Codieren, Decodieren oder Codeumsetzung allgemein , CODING, DECODING OR CODE CONVERSION, IN GENERAL |
MODULE BASE ELEMENT FOR A VEHICLE OCCUPANT PROTECTION SYSTEM AND VEHICLE OCCUPANT PROTECTION SYSTEM
European Patent Office | 2023
|Sensor assembly for a vehicle occupant protection device
European Patent Office | 2018
|Module base element for a vehicle occupant protection system and vehicle occupant protection system
European Patent Office | 2020
|