Method and System for Identifying Wet Pavement Using Tire Noise
First Claim
1. A method for determining a wet road surface condition for a vehicle driving on a road, the method comprising the steps of:
- capturing tire noise as a vehicle travels on a driving surface of the road using a sound sensing device;
quantifying a variable sound level of the captured tire noise between a first frequency and a second frequency;
determining whether each quantified sound level from the first frequency to the second frequency is above a predetermined sound level threshold below the sound level at the first frequency; and
generating a wet driving surface indicating signal in response to determining that each quantified sound level above the first frequency to the second frequency is above the predetermined sound level threshold.
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Abstract
A wet road surface detection system is provided for a vehicle driving on a road. The wet road surface detection system includes a sound sensing device coupled to the vehicle for capturing noise of the vehicle tires as the vehicle drives on a road surface. A processor processes sounds captured by the audible sensing device. The processor quantifies a variable sound level of the captured noise between a first frequency and a second frequency. The processor determines whether each quantified sound level between the first frequency and the second frequency is above a predetermined sound level threshold below the sound level at the first frequency. The processor determines that the vehicle is driving on a wet road surface in response to each quantified sound level between the first frequency and the second frequency being above a predetermined sound level threshold below the sound level at the first frequency.
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Citations
24 Claims
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1. A method for determining a wet road surface condition for a vehicle driving on a road, the method comprising the steps of:
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capturing tire noise as a vehicle travels on a driving surface of the road using a sound sensing device; quantifying a variable sound level of the captured tire noise between a first frequency and a second frequency; determining whether each quantified sound level from the first frequency to the second frequency is above a predetermined sound level threshold below the sound level at the first frequency; and generating a wet driving surface indicating signal in response to determining that each quantified sound level above the first frequency to the second frequency is above the predetermined sound level threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A wet road surface detection system for a vehicle driving on a road, the wet road surface detection system comprising:
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a sound sensing device coupled to the vehicle for capturing noise of the vehicle tires as the vehicle drives on a road surface; and a processor for processing the sounds captured by the audible sensing device, the processor quantifying a variable sound level of the captured noise between a first frequency and a second frequency; wherein the processor determines whether each quantified sound level between the first frequency and the second frequency is above a predetermined sound level threshold, and wherein the processor determines that the vehicle is driving on a wet road surface in response to each quantified sound level between the first frequency and the second frequency being above a predetermined sound level threshold. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification