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:
Sep. 14, 2021
Filed:
Jul. 22, 2019
Stabilus Gmbh, Koblenz, DE;
Thomas Ehre, Saarlouis, DE;
STABILUS GMBH, Koblenz, DE;
Abstract
The invention relates to a method for measuring the position of a piston-cylinder arrangement, said method comprising: providing the piston-cylinder arrangement, providing an electrical circuit unit, applying a DC voltage (Vcc) to the piston-cylinder arrangement, sensing a capacitance (C) of the piston-cylinder arrangement as an input variable for the electrical circuit unit, generating a pulsed DC voltage (Vcc) by means of the electrical circuit unit on the basis of the sensed capacitance (C) of the piston-cylinder arrangement, providing a measuring unit for measuring a frequency (F, F) of the pulsed DC voltage (Vcc) generated, determining a frequency difference (DF) between the frequency (F) of the pulsed DC voltage (Vcc) before displacement of the piston within the cylinder and the frequency (F) of the pulsed DC voltage (Vcc) after displacement of the piston within the cylinder, determining a displacement distance of the piston within the cylinder on the basis of the frequency difference (DF).