Methods and systems to enhance pipeline trajectory reconstruction using pipeline junctions
US11988318B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2016 |
| Grant date | May 21, 2024 |
| Priority date | — |
| Expiry date | Jul 16, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L2101/30
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present embodiments include new methods for low-cost inertial measurement units (IMU) using an extended Kalman filter (EKF) to increase the navigation parameters accuracy or reduce the total RMS errors even during the unavailability of Above Ground Markers (AGM) using new developed method called PipeLine Junctions (PLJ) detection. This method detects the pipeline junctions and adds heading and pitch constraints to the Pipeline Inspection Gauge (PIG) motion between junctions. The results of this such embodiments with a micro-electro-mechanical systems (MEMS) based IMU showed that the position RMS errors have been reduced around 85% of the original applied EKF solution. Therefore, this approach is a useful solution for PIG navigation system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.