The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 02, 2012
Filed:
Dec. 19, 2007
Alexey Malinovskiy, Weil Am Rhein, DE;
Edgar Schmitt, Friesenheim, DE;
Dietmar Spanke, Steinen, DE;
Endress + Hauser GmbH + Co. KG, Maulburg, DE;
Abstract
A method for ascertaining and monitoring fill level of a medium in a container a field device using a travel time, measuring method, wherein transmission signals are transmitted and reflection signals received. The received reflection signals are registered as echo signals in an echo function, wherein masking curve, evaluation curves and/or echo parameters of the echo signals in the echo function are ascertained or predetermined, as well as stored in a first measuring cycle. By a static echo search algorithm, through the masking curve, the evaluation curve, the echo parameters, position and/or amplitude of at least one wanted echo signal are/is ascertained, wherein, a dynamic echo search algorithm, a continuous echo tracking of positional changes and/or amplitude changes of individual echo signals and/or the wanted echo signal in the echo function is performed. On the basis of positional changes and/or amplitude changes of individual wanted echo signals, masking curve, evaluation curve and/or echo parameters of the static echo search algorithm are adjusted.