Automatic parasitic echo storage

US7333900B2 · kind B2 · utility

Assignee

• VEGA Grieshaber KG · DE

Inventors

• Roland Welle · Oberwolfach, DE
• Karl Griessbaum · Nettetal, DE
• Josef Fehrenbach · Lenzkirch, DE
• Thomas Deck · Wolfach, DE
• Martin Gaiser · Alpirsbach, DE

Key dates

• Filing date: Aug 11, 2005
• Grant date: Feb 19, 2008
• Expiry date: Aug 11, 2025

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S13/88
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Described is a method for automatically initiating an update of a parasitic echo storage device in a fill level meter operating according to a runtime method. In this method individual echoes of echo curves of different ages are allocated, according to their typical echo characteristics, to global echo groups so that subsequently, after examining the behaviour over time of the echoes of the respective global echo curves, it can be judged whether the echoes of the respective global echo curves are useful echoes or parasitic echoes. Starting from this classification, the parasitic echo storage device is then updated with the oldest echoes of the corresponding global echo groups. Apart from the method for updating a parasitic echo storage device described is also an evaluation device for implementing the method as well as to a computer program and a computer program product for carrying out the method.