Patent ID: 6720882
Filing Date: 2004-04-13
Classification: G01M,Y10T

Abstract:
A self-monitoring or self-testable system for condition monitoring of a structure including at least:one or more of substantially sealed first cavities formed on or between surfaces of or within said structure; a source of fluid at substantially constant pressure relative to a reference pressure where said constant pressure and said reference pressure are not the same, said source coupled to said first cavities through respective high fluid impedance devices sufficient to create detectable pressure differentials between said source and said cavities across said high fluid impedance devices; a fluid capacitance in operative association with said first cavities and corresponding high fluid flow impedance device to facilitate transient flow of fluid through said corresponding high fluid flow impedance devices; and, a telemetry system operatively associated with said high fluid impedance devices for monitoring the transient or varying pressure differential across each high fluid impedance device and, when a change in pressure differential is monitored, providing a signal indicative of the location of the cavities coupled with the high fluid impedance device across which said pressure differential is monitored.