Method of error detection during evaluation of sensor signals
First Claim
1. A method for error detection during an evaluation of output signals of knock sensor or sensors in an internal combustion engine, with at least one sensor and an evaluating device connected therewith, the method comprising the steps of forming at least one variable reference level from output signals of said sensor or sensors;
- comparing the variable reference level for error detection with upper and lower limiting values;
making a conclusion about an error in the case of a predeterminable exceeding of the upper limiting value or falling below the lower limiting value by the actual reference level; and
forming at least one of the upper and lower limiting value in dependence on preceding reference values.
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Abstract
A method for error detection during an evaluation of sensor signals, in particular during an evaluation of output signals of knock sensors in an internal combustion engine, with at least one sensor and an evaluating device connected therewith, the method includes the steps of forming at least one variable reference level from output signals of a sensor or sensors; comparing the variable reference level for error detection with upper and/or limiting values; making a conclusion about an error in the case of a predeterminable exceeding of the upper and/or exceeding of the lower limiting value by the actual reference level; and forming at least one limiting value in dependence on preceding reference values.
26 Citations
8 Claims
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1. A method for error detection during an evaluation of output signals of knock sensor or sensors in an internal combustion engine, with at least one sensor and an evaluating device connected therewith, the method comprising the steps of forming at least one variable reference level from output signals of said sensor or sensors;
- comparing the variable reference level for error detection with upper and lower limiting values;
making a conclusion about an error in the case of a predeterminable exceeding of the upper limiting value or falling below the lower limiting value by the actual reference level; and
forming at least one of the upper and lower limiting value in dependence on preceding reference values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- comparing the variable reference level for error detection with upper and lower limiting values;
Specification