Method Of Sensing An Amount Of Moisture On A Surface Of A Substrate With Temperature Compensation
First Claim
1. A method of determining an amount of moisture on a surface of a substrate, said method comprising the steps of:
- transmitting a transmitter signal to generate a vibrational wave;
propagating the vibrational wave to vibrate the substrate;
detecting the vibrations of the substrate;
converting the vibrations into a receiver signal;
sensing the temperature of the substrate; and
compensating for a phase shift between the transmitter signal and the receiver signal attributable to the temperature of the substrate to determine the amount of moisture on the surface.
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Accused Products
Abstract
A method for determining an amount of moisture on a surface of a substrate includes a step of transmitting a transmitter signal to generate a wave. The transmitter signal has a first phase. The wave is propagated to vibrate the surface. Vibrations in the surface are detected and converted into a receiver signal. The receiver signal has a second phase different than the first phase. The method includes the step of sensing the temperature of the substrate. The amount of moisture on the surface is computed based on a phase shift between the transmitter signal and the receiver signal that has been compensated to account for surface temperature.
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Citations
28 Claims
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1. A method of determining an amount of moisture on a surface of a substrate, said method comprising the steps of:
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transmitting a transmitter signal to generate a vibrational wave; propagating the vibrational wave to vibrate the substrate; detecting the vibrations of the substrate; converting the vibrations into a receiver signal; sensing the temperature of the substrate; and compensating for a phase shift between the transmitter signal and the receiver signal attributable to the temperature of the substrate to determine the amount of moisture on the surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of detecting moisture on a surface of a substrate with a wiper system, said method comprising the steps of:
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sensing an amount of moisture on the surface of the substrate with a transmitter signal and a receiver signal; and compensating for a phase shift between the transmitter signal and the receiver signal attributable to the temperature of the substrate. - View Dependent Claims (24, 25, 26, 27, 28)
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Specification