Method and apparatus for detecting ice or frost deposition
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United States of America Patent
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Dec 11, 2001
Grant Date -
N/A
app pub date -
May 7, 1999
filing date -
May 7, 1999
priority date (Note) -
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Abstract
A method and system for detecting the presence of a frozen deposition at an interface between a substrate of known thermophysical properties and surroundings of unknown thermophysical properties. The system involves applying a predetermined quantity of heat to a temperature sensor positioned at the interface to cause a thermal perturbation, measuring an output signal of the sensor subsequent to applying the predetermined quantity of heat, and comparing one or more measured values of the output signal to one or more reference output level values to determine the presence or absence of the frozen deposition.
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