METHOD AND SYSTEM FOR MONITORING ROAD CONDITIONS
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Abstract
A method for monitoring road conditions includes measuring a vehicle movement quantity associated with a present road condition. A respective position at which the measuring was performed is recorded. A road condition class is assigned to each of the positions by comparison with type calibration data. The type calibration data is pre-defined relations between vehicle movement quantities and road condition classes for a specific type of measuring unit and for a specific type of vehicle. The positions and assigned road condition classes are stored in a road condition database. A consolidated road condition class is determined for a target road section, by forming a distribution of stored road condition classes for positions within the target road section and selecting the consolidated road condition class to be representative for the distribution of road condition classes. The consolidated road condition class for the target road section is presented.
29 Citations
39 Claims
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1-20. -20. (canceled)
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21. A method for obtaining road condition information comprising the steps of:
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measuring, by a measuring unit mounted at a vehicle, a vehicle movement quantity associated with a present road condition, at a plurality of occasions; recording, by said measuring unit, a respective position at which said step of measuring was performed for said plurality of occasions; and assigning a road condition class, out of a number of pre-defined road condition classes, to each of said positions, based on said measured vehicle movement quantities by comparison with type calibration data; said type calibration data being pre-defined relations between vehicle movement quantities and road condition classes for a specific type of measuring unit, to which said measuring unit belongs, and for a specific type of vehicle, to which said vehicle belongs. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method for analyzing road condition information comprising the steps of:
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obtaining a plurality of positions and thereto assigned road condition classes; storing said positions and said thereto assigned road condition classes in a road condition database; determining a consolidated road condition class, out of said predefined number of road condition classes, for a target road section or a target area, by forming a distribution of stored road condition classes for positions within said target road section or said target area and selecting said consolidated road condition class to be representative for said distribution of road condition classes; and presenting said consolidated road condition class for said target road section or said target area. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38)
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39. A system for monitoring road conditions comprising:
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at least one measuring unit, being mountable at a respective vehicle; and a road condition database server; said measuring unit having a vehicle movement sensor, operable to measure a vehicle movement quantity associated with a present road condition; said measuring unit further having a positioning unit, operable to record a position at which a measurement of said vehicle movement sensor was performed; said measuring unit further having a communication unit, operable to communicate data to said road condition database server; said road condition database server having a receiver for receiving data from said measuring units, and a memory; said system being operable to assign a road condition class, out of a limited number of road condition classes, to said position, based on said measured vehicle movement quantities by comparison with type calibration data; said type calibration data being pre-defined relations between vehicle movement quantities and road condition classes for a specific type of measuring unit, to which respective said measuring unit belongs, and for a specific type of vehicle, to which respective said vehicle belongs; said road condition database server being operable to store, in said memory, said positions and said thereto assigned road condition classes in a road condition database; said road condition database server being further operable to determine a consolidated road condition class, out of said predefined number of road condition classes, for a target road section or a target area, by forming a distribution of stored road condition classes for positions within said target road section or said target area and selecting said consolidated road condition class to be representative for said distribution of road condition classes; said road condition database server being further operable to present said consolidated road condition class for said target road section or said target area.
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Specification