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US 6,684,702 B2Granted
Method of detection of flow duct obstruction
AssigneeMcMaster University
InventorSamir Ziada
Life of this patent
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Abstract
A method for detecting an obstruction in a flow duct is provided. The method includes the steps of directing gas through at least one port of the flow duct, measuring a flow noise level of the gas directed through the at least one port, and comparing the noise level with a predetermined noise level. In the event that the flow noise level exceeds the predetermined noise level by at least a threshold amount, then the method includes the step of indicating the presence of an obstruction in the at least one port.
Claims11
A method for detecting an obstruction in a flow duct comprising:
- directing gas through at least one port of said flow duct to cause flow of said gas through said at least one port;
- measuring a flow noise level of said flow of said gas through said at least one port;
- comparing said noise level with a predetermined noise level;
- and
- detecting when said flow noise level exceeds said predetermined noise level by at least a threshold amount, then indicating the presence of an obstruction in said at least one port.
2 more elements
Dependencies are inferred from the claim text.