Detecting a Faulty Voltage Sensor of a Controller in an Onboard Electrical System of a Vehicle
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorDavid MAIER
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Abstract
A method for detecting a faulty voltage sensor of a group of n≥3 voltage sensors of controllers in an onboard electrical system of a vehicle, wherein (a) voltage measurement values from n−1 voltage sensors are averaged, (b) the deviation of a voltage measurement value of the remaining voltage sensor from the averaged voltage measurement value is determined, and (c) if the deviation satisfies a specified criterion, an error message relating to a fault of the remaining voltage sensor is output and at least steps (a) to (b) are carried out for the voltage sensors in a commutated manner.
Claims11
-10. (canceled)
A method for detecting a defective voltage sensor from a group of n≥3 voltage sensors of controllers in an onboard electrical system of a vehicle, the method comprising:
- (a) averaging voltage measurement values from n−1 voltage sensors;
- (b) determining a deviation of a voltage measurement value of a remaining voltage sensor from an averaged voltage measurement value;
- and
- (c) outputting an error message relating to a fault state of the remaining voltage sensor when the deviation satisfies a specified criterion;
- wherein at least steps (a) and (b) are executed for the voltage sensors in a commutated manner.
Dependencies are inferred from the claim text.