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Apparatus and method for detecting the degradation of a coating using embedded sensors

  • US 6,911,828 B1
  • Filed: 05/23/2002
  • Issued: 06/28/2005
  • Est. Priority Date: 05/23/2001
  • Status: Active Grant
First Claim
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1. A system for monitoring the effectiveness of a coating on a substrate surface, the system comprising:

  • (a) a sensor array positioned in contact with said coating, said sensor array comprising;

    (i) a plurality of sensor pins in contact with said coating;

    (ii) at least one sensor circuit connected across at least two of said sensor pins, said sensor circuit comprising signal generation circuitry for generating an electromagnetic signal across said at least two sensor pins, response signal metering circuitry for measuring a response electromagnetic signal across said at least two sensor pins, and first telemetry circuitry; and

    (iii) at least one power supply circuit; and

    (b) a data interrogation device positioned in proximity to said sensor array, said interrogation device comprising second telemetry circuitry for data communication with said first telemetry circuitry of said sensor array.

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