Patent ID: 8353197
Filing Date: 2013-01-15
Classification: G01M

Abstract:
1. A differential comparative pressure monitoring system for monitoring of structural integrity of a component or structure, the system comprising, a pressure source; a first fluidic circuit and a reference fluidic circuit, the fluidic circuits having substantially matched characteristics, the first and reference circuits connected in parallel to the pressure source, the first circuit comprising a sensor element sealed to a surface on or in the structure or component, the sensor element together with the surface of the structure or component defining a first cavity, the reference circuit being isolated from the surface of the structure or component; and, a monitoring device coupled to the first and reference circuits, the monitoring device taking simultaneous measurements of a common fluidic characteristic of the first and reference circuits and producing a signal indicative of the integrity of the structure or component based on a difference between the simultaneously measured common fluidic characteristic of the first and reference circuits.