Time delay based health monitoring system using a sensor network
AssigneeThe Boeing Company
InventorsHoon Sohn, Chul Min Yeum, Jeong-Beom Ihn
Life of this patent
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Abstract
A method and apparatus for detecting an inconsistency in an object. Signals sent on a plurality of paths in the object are received at a plurality of transducer units associated with the object. Time delays are identified for a number of modes in the signals received at the plurality of transducer units. A determination is made as to whether a time delay in the time delays for the number of modes in the signals has a difference from a number of other time delays for the number of modes that is greater than a desired amount.
Claims20
A method for detecting an inconsistency in an object, the method comprising:
- receiving signals sent on a plurality of paths in the object at a plurality of transducer units associated with the object;
- identifying time delays for a number of modes in the signals received at the plurality of transducer units;
- and
- determining whether a time delay in the time delays for the number of modes in the signals has a difference from a number of other time delays for the number of modes that is greater than a desired amount.
A health monitoring system comprising:
- a plurality of transducer units configured to receive signals from an object;
- and
- a signal analysis module configured to identify time delays for a number of modes in the signals received by the plurality of transducer units in which the signals are received on a plurality of paths in the object in which the plurality of transducer units is associated with the object;
- and determine whether a time delay in the time delays for the number of modes in the signals has a difference from a number of other time delays in the time delays for the number of modes in the signals that is greater than a desired amount.
A health monitoring system of an aircraft, the health monitoring system comprising:
- a transducer system associated with a number of structures in the aircraft;
- and
- a signal analysis module configured to cause a first plurality of transducer units associated with the number of structures in the aircraft to send signals on a plurality of paths in an object;
- identify time delays for asymmetric modes in the signals received by a second plurality of transducer units in the transducer system;
- and determine whether a time delay in the time delays for the asymmetric modes in the signals has a difference from a number of other time delays for the asymmetric modes that is greater than a desired amount.
Dependencies are inferred from the claim text.