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Acceleration sensor having at least one micromechanical sensor element for an occupant protection system in a vehicle
Acceleration sensor having at least one micromechanical sensor element for an occupant protection system in a vehicle
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机译:具有用于车辆中的乘员保护系统的至少一个微机械传感器元件的加速度传感器
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摘要
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.
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