Method and apparatus for measurement of ice thickness employing ultra-sonic pulse echo technique
First Claim
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1. An apparatus for measurement of the thickness of ice on an ice-accreting surface employing an ultra-sonic pulse echo technique, comprising:
- an ice-accreting surface;
transducer means mounted at said surface for transmitting an ultra-sonic signal into said ice and for receiving a reflected signal; and
means for evaluating the time delay between transmission and reception of the ultra-sonic signal, the time delay indicative of the thickness of the ice.
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Abstract
Method and apparatus for measurement of ice thickness employing ultra-sonic pulse echo technique, wherein an ultra-sonic pulse is emitted from a transducer at the ice-accreting surface of a structure, the pulse is reflected at the periphery of the accreted ice and the reflection is detected. The time delay is calibrated and related to ice thickness and accretion rate.
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Citations
17 Claims
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1. An apparatus for measurement of the thickness of ice on an ice-accreting surface employing an ultra-sonic pulse echo technique, comprising:
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an ice-accreting surface; transducer means mounted at said surface for transmitting an ultra-sonic signal into said ice and for receiving a reflected signal; and means for evaluating the time delay between transmission and reception of the ultra-sonic signal, the time delay indicative of the thickness of the ice. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for detection of the presence of ice on a surface, comprising the steps of:
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(a) transmission of an ultra-sonic pulse into said ice via transducing means mounted at said surface; (b) propagation of said pulse through said ice to its periphery and reflection of said pulse back to said transducing means; and (c) evaluating the time between transmission of said pulse and reception by said transducing means of said reflected pulse to obtain ice thickness.
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16. A method for detection of the presence of ice on a surface, comprising the steps of:
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(a) transmission of an ultra-sonic pulse into said ice via transducing means mounted at said surface; (b) propagation of said pulse through said ice to its periphery and reflection of said pulse back to said transducing means; and (c) evaluating the time between transmission of said pulse and reception by said transducing means of said reflected pulse to obtain ice accretion rate. - View Dependent Claims (17)
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Specification