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. 03, 2021
Filed:
Dec. 15, 2017
Leopold Kostal Gmbh & Co. KG, Luedenscheid, DE;
Carl Christian Lexow, Dortmund, DE;
KOSTAL Automobil Elektrik GmbH & Co. KG, Luedenscheid, DE;
Abstract
A method for measuring a capacitance value of a capacitive sensor uses an integration process involving charge quantities being transferred in successive integration cycles from the capacitive sensor to an integration capacitor. The method includes performing the integration process until the number of integration cycles carried out has reached a number N of integration cycles to be carried out, wherein a starting value Nis set to N and an end value Nis determined. An A/D converter measures a voltage value U(N) at the integration capacitor and the voltage value is added to a voltage sum value U. The number N is increased by a value n, where n is at least one and is less than N=N−N. The steps are repeated until the number N exceeds the end value N. The ending voltage sum value is indicative of the capacitance value of the capacitive sensor.