Patent ID: 7333900
Filing Date: 2008-02-19
Classification: G01F,G01S

Abstract:
1. A method for dynamically updating a parasitic echo storage device of a fill level meter operating according to a runtime method, the method comprising: identifying a useful echo as such due to the location-dynamic behaviour of its typical echo characteristics for a parameterisable period of time; recognizing a parasitic echoes due to the static behaviour of their typical echo characteristics across the same period of time; updating the parasitic echo storage device with the parasitic echo data when the useful echo has been identified for the parameterisable time period; recording an echo curve reflected from a medium to be measured; storing at least two of the recorded echo curves of different ages; allocating the echoes of the stored echo curves of different ages to global echo groups of identical reflection origin; analysing the echoes, which have been merged to form global echo groups, in relation to changes over time of their typical echo characteristics; classifying the global echo groups depending on the previously obtained analysis result into useful echoes and parasitic echoes; and updating the parasitic echo storage device of the fill level meter depending on the result of the classification.