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:
Apr. 19, 2016
Filed:
Dec. 07, 2011
Heinz Walter, Hergatz, DE;
Heinz Walter, Hergatz, DE;
IFM ELECTRONIC GMBH, , DE;
Abstract
A method for monitoring the operation of a pressure measuring cell () of a capacitive pressure sensor (), wherein the pressure measuring cell () has a measuring capacitor (C) and a reference capacitor (C) and the pressure measuring value (p) is obtained from the capacity values of the measuring capacitor (C) and the reference capacitor (C), characterized in that a control pressure measuring value (p') is obtained with an auxiliary capacitor (C) arranged outside the pressure measuring cell () and the operability of the pressure measuring cell () is inferred by comparing the pressure measuring value (p) to the control pressure measuring value (p′) is provided.