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:
Aug. 28, 2007
Filed:
Jul. 29, 2005
Karl Griessbaum, Muehlenbach, DE;
Josef Fehrenbach, Haslach, DE;
Martin Mellert, Steinach, DE;
Vega Grieshaber KG, Wolfach, DE;
Abstract
Described is a method for detecting and/or for monitoring the level of a medium stored in a vessel and in particular to a method for diagnosing the functionality of the electromechanical oscillation unit of a vibration level gauge. An electromechanical transducer of the electromechanical oscillation unit of a vibration level gauge is supplied with an electric wave signal. The frequency of which is beyond the resonance frequency range of the electromechanical oscillation unit and is thus not adapted to actuate the oscillatory portion as for example an oscillating rod probe or tuning fork, so that the electric wave signal is converted into mechanical oscillations without actuating the oscillatory portion. Subsequently, the converted mechanical oscillations will be recorded using the at least one electromechanical transducer of the electromechanical oscillation unit, which reconverts the mechanical oscillations into an electric wave signal. These recorded electric wave signals will then be analyzed to derive therefrom any transmission characteristics of the electromechanical transducer by comparing at least one of the signal characteristics of the reconverted electric wave signal with typical signal characteristics determined before. Finally, a status information will be edited subject to the analysis of the transmission characteristics.