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. 28, 2003
Filed:
Mar. 29, 2002
Applicant:
Inventors:
Klaus-Dieter Fiebelkorn, Minfeld, DE;
Gerhard Klebert, Bad Herrenalb, DE;
Alf Puettmer, Karlsruhe, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01H 1/00 ;
U.S. Cl.
CPC ...
G01H 1/00 ;
Abstract
The invention relates to a diagnostic system and method, especially for a valve ( ) that can be actuated by a positioner ( ) via a drive ( ). The system utilizes a sensor ( ) for recording structure-related sound and has a device ( ) for evaluating a recorded measurement signal ( ). A spectral region greater than 50 kHz is evaluated for conducting fault recognition. A fault indication signal is generated if the intensity of the measurement signal in this spectral region exceeds a defined threshold value. The sound caused by cavitation is primarily evaluated for conducting fault recognition.