Differential comparative pressure monitoring system
US8353197B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2008 |
| Grant date | Jan 15, 2013 |
| Priority date | — |
| Expiry date | Sep 2, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A differential comparative pressure monitoring system (10) for monitoring the structural integrity of a structure (30) has a pressure source (12); a first fluidic circuit (14), and a reference fluidic circuit (16) which are connected in parallel to the pressure source (12); and a monitoring device (18). The first and reference fluidic circuits (14) and (16) have substantially matched characteristics. The first circuit (14) has a sensor element (20) which is sealed to a surface (28) on the structure (30). The reference circuit (16) is in fluidic isolation from the surface (28) of the structure (30). The monitoring device (18) takes simultaneous measurements of a common fluidic characteristic of the circuits (14) and (16), and produces a signal indicative the integrity of the structure based on a difference between the simultaneously measured common characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.