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:
Feb. 06, 2024
Filed:
Jun. 05, 2019
Zf Automotive Safety Germany Gmbh, Aschaffenburg, DE;
Guido Hirzmann, Sailauf, DE;
Michael Schillinger, Aschaffenburg, DE;
ZF AUTOMOTIVE SAFETY GERMANY GMBH, Aschaffenburg, DE;
Abstract
A method for detecting contact with a manually activated steering or control device, in particular a vehicle steering wheel, comprises the following steps: applying an alternating voltage to at least one conductor arrangement () which is arranged on the steering or control device, and has at least one conductor line with a significant ohmic resistance; determining the current profile in the conductor arrangement (); determining the real component and the virtual component of the instantaneous alternating current resistance of the conductor arrangement (); determining the capacitance or the change in capacitance of the conductor arrangement (); determining the phase shift; and evaluating the determined values. A device for carrying out the method comprises a steering or control device, in particular a vehicle steering wheel, a conductor arrangement () which is arranged on the steering or control device and which has at least one conductor line with a significant ohmic resistance, and a control and evaluation device which is configured to apply an alternating voltage to the conductor arrangement (), to measure the current profile in the conductor arrangement () and to evaluate the determined values.