Kalman filter based anti-transient-impact-vibration-interference signal processing method and system for vortex flowmeter
US10876869B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2018 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Feb 22, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A segmented Kalman filter based anti-transient-impact-vibration-interference signal processing method and system for a vortex flowmeter with a microcontroller as a core are provided, which relate to a flow rate measurement field. The method includes: (1) seeking for data segments containing transient impact vibration interferences, (2) configuring a Kalman filter, (3) implementing Kalman filtering in segments, (4) analyzing frequency domain amplitude spectrum. A vortex flow signal is predicted and estimated by the Kalman filter to achieve an objective of reducing powers and proportions of transient impact vibration interferences. Even when multiple transient impact interference components exist, and powers of these interferences are larger than the power of the vortex flow signal, the interferences can still be eliminated to correctly extract a frequency of the vortex flow signal, as well as ensuring measurement accuracy of the vortex flowmeter under complicated working process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.