Capacitance probe for detection of anomalies in non-metallic plastic pipe
US7839282B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2010 |
| Grant date | Nov 23, 2010 |
| Priority date | — |
| Expiry date | Jul 28, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2405
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The disclosure relates to analysis of materials using a capacitive sensor to detect anomalies through comparison of measured capacitances. The capacitive sensor is used in conjunction with a capacitance measurement device, a location device, and a processor in order to generate a capacitance versus location output which may be inspected for the detection and localization of anomalies within the material under test. The components may be carried as payload on an inspection vehicle which may traverse through a pipe interior, allowing evaluation of nonmetallic or plastic pipes when the piping exterior is not accessible. In an embodiment, supporting components are solid-state devices powered by a low voltage on-board power supply, providing for use in environments where voltage levels may be restricted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.