Device for determining the surface condition of a roadway
First Claim
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1. A device for determination of the surface condition of a roadway, the device comprising:
- a light-sensitive sensor to measure a light signal reflected from the surface of the roadway; and
an analyzer to determine the surface condition of the roadway as a function of the power of the light signal at a first wavelength in the infrared range, at a second wavelength in the infrared range, and at least a third wavelength in the infrared range.
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Abstract
The invention concerns a device for determination of the surface condition of a roadway, in which the device includes a light-sensitive sensor to measure a light signal reflected from the surface of the roadway and an analyzer to determine the surface condition of the roadway as a function of the power of the light signal at a first wavelength in the infrared range, at a second wavelength in the infrared range and at at least a third wavelength in the infrared range.
13 Citations
21 Claims
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1. A device for determination of the surface condition of a roadway, the device comprising:
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a light-sensitive sensor to measure a light signal reflected from the surface of the roadway; and
an analyzer to determine the surface condition of the roadway as a function of the power of the light signal at a first wavelength in the infrared range, at a second wavelength in the infrared range, and at least a third wavelength in the infrared range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device for determination of the surface condition of a roadway, the device comprising:
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a light-sensitive sensor to measure a light signal reflected from the surface of the roadway; and
an analyzer to determine the surface condition of the roadway as a function of the power of the light signal at a first wavelength in the infrared range, or at least a second wavelength in the infrared range, as well as a function of the ratio of the power of the light signal at the first wavelength to the power of the light signal at the second wavelength. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A vehicle comprising:
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a light-sensitive sensor to measure a light signal reflected from a surface of a roadway at a distance in front of the vehicle, adjustable as a function of the speed of the vehicle; and
an analyzer to determine a surface condition of the roadway as a function of a power of the light signal. - View Dependent Claims (17)
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18. A transport system, the transport system comprising:
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a first vehicle with a device to determine a surface condition of a roadway and with a transmitter to transmit information concerning the surface condition of the roadway; and
at least a second vehicle with a receiver to receive the information concerning the surface condition of the roadway. - View Dependent Claims (19, 20, 21)
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Specification