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DYNAMIC ENVIRONMENTAL CHANGE COMPENSATION OF SENSOR DATA IN STRUCTURAL HEALTH MONITORING SYSTEMS

  • US 20080255774A1
  • Filed: 04/16/2008
  • Published: 10/16/2008
  • Est. Priority Date: 04/16/2007
  • Status: Active Grant
First Claim
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1. A method for adjusting sensor signal data detected in a structural health monitoring (SHM) system to compensate dfor the effects of an environmental variable acting on the data, the method comprising:

  • detecting one or more sets of a sensor signal data from an array of transducers mounted on a structure being monitored by the SHM system;

    constructing a baseline data space comprising the one or more sets of the sensor signal data detected;

    detecting one or more current sets of the sensor signal data from the transducers at a later time at which the environmental variable is acting to affect the data;

    amending the baseline data space with the current sensor signal data sets while they are being detected; and

    ,determining if the current sensor signal exceeds a selected threshold value on the basis of the amended baseline data space.

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