Method for determining a roadway state
First Claim
1. A method for determining a roadway state of a roadway on which a vehicle is traveling which has at least one acceleration sensor assigned to at least one wheel of the vehicle in order to determine a vertical component of an acceleration of the at least one wheel, the method comprising:
- an evaluation unit receiving measured signals from the at least one acceleration sensor,the evaluation unit automatically determining at least one frequency spectrum from the at least one acceleration sensor,the evaluation unit automatically identifying at least one local maximum of the at least one frequency spectrum, andthe evaluation unit automatically identifying a roadway state of the roadway based on the at least one identified local maximum of the at least one frequency spectrum.
1 Assignment
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Accused Products
Abstract
In a method for determining a roadway state (STATE) of a roadway on which a vehicle (10) is travelling which has at least one wheel (14) and an acceleration sensor (24) which is assigned to the wheel (14), in order to determine a vertical component of an acceleration of the wheel (14), a characteristic value which is representative of the roadway state (STATE) is determined as a function of a measured signal (AC_VERT) of the acceleration sensor (18).
15 Citations
12 Claims
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1. A method for determining a roadway state of a roadway on which a vehicle is traveling which has at least one acceleration sensor assigned to at least one wheel of the vehicle in order to determine a vertical component of an acceleration of the at least one wheel, the method comprising:
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an evaluation unit receiving measured signals from the at least one acceleration sensor, the evaluation unit automatically determining at least one frequency spectrum from the at least one acceleration sensor, the evaluation unit automatically identifying at least one local maximum of the at least one frequency spectrum, and the evaluation unit automatically identifying a roadway state of the roadway based on the at least one identified local maximum of the at least one frequency spectrum. - View Dependent Claims (2, 3, 4)
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5. A device for determining a roadway state of a roadway on which a vehicle is traveling which has at least one acceleration sensor assigned to at least one wheel of the vehicle in order to determine a vertical component of an acceleration of the at least one wheel, comprising:
an evaluation unit configured to; receive measured signals from the at least one acceleration sensor, determine at least one frequency spectrum from the at least one acceleration sensor, identify at least one local maximum of the at least one frequency spectrum, and identify a roadway state of the roadway based on the at least one identified local maximum of the at least one frequency spectrum. - View Dependent Claims (6, 7, 8)
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9. A vehicle comprising:
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at least one wheel and at least one acceleration sensor that is assigned to at least one the wheel in order to determine a vertical component of an acceleration of the at least one wheel; and an evaluation unit configured to; receive measured signals from the at least one acceleration sensor, determine at least one frequency spectrum from the at least one acceleration sensor, identify at least one local maximum of the at least one frequency spectrum, and determine a roadway state of a roadway on which a vehicle is traveling based on the at least one identified local maximum of the at least one frequency spectrum. - View Dependent Claims (10, 11, 12)
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Specification