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. 11, 2017
Filed:
Apr. 04, 2013
Robert Bosch Gmbh, Stuttgart, DE;
Metin Guerer, Ludwigsburg, DE;
Norbert Schneider, Tiefenbronn, DE;
Karl Wenzel, Stuttgart, DE;
Axel-Werner Haag, Stuttgart, DE;
Rolf Reischl, Stuttgart, DE;
ROBERT BOSCH GMBH, Stuttgart, DE;
Abstract
A circuit system for measuring a sensor element capacitance of a sensor element, in particular of a capacitive humidity sensor, including: the sensor element, which has the sensor element capacitance; a charge storage element, which is connected directly, or only via a resistor element, in series to the sensor element; and a control unit, which is configured to charge the charge storage element to a reference voltage and to successively transfer the charge via the sensor element capacitance until the charge storage element has reached a particular comparison voltage, the sensor element number of transfer processes thus ascertained representing information about the sensor element capacitance of the sensor element.