Device for determining the condition of a road surface
First Claim
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1. A device for determining a condition of a road surface, comprising:
- an electrical element configured for generating an electric field, the electric field extending into an area of the road surface; and
a determining element configured to determine the condition of the road surface using electrical properties of the electrical element.
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Abstract
A device for determining the condition a road surface, the device having an electrical element which is suited for generating an electric field, and the electric field extending into the area of the road surface, and means being provided for determining the condition of the road surface from the electrical properties of the electrical element. The electrical element may be a capacitor or a frame antenna.
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Citations
9 Claims
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1. A device for determining a condition of a road surface, comprising:
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an electrical element configured for generating an electric field, the electric field extending into an area of the road surface; and
a determining element configured to determine the condition of the road surface using electrical properties of the electrical element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for detecting the condition of a road surface, comprising:
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producing an alternating field that interacts with the road surface using a capacitor;
determining a first capacitance C1 of the capacitor at a first frequency of the alternating field;
determining a second capacitance C2 of the capacitor at a second frequency of the alternating field;
determining a third capacitance C3 of the capacitor at a third frequency of the alternating field; and
forming a quotient from the difference between C1 and C3 and the difference between C2 and C3 so as to determine the condition of the road surface.
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Specification