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. 20, 2010
Filed:
Dec. 14, 2006
Helmut Moser, Heilbronn, DE;
Thomas Saile, Forchtenberg, DE;
Helmut Moser, Heilbronn, DE;
Thomas Saile, Forchtenberg, DE;
Atmel Automotive GmbH, Heilbronn, DE;
Abstract
A measuring device is disclosed for capacitive pressure and/or temperature measurement, particularly for tire pressure control systems, having at least one sensor, which has a capacitive measuring element to detect a state value, which is applied at an output-side measuring node of the measuring element, with at least one A/D converter operating according to the dual-slope method, with a charging/discharging circuit, for mutual charging and discharging of the measuring element and for generating a sawtooth-shaped measuring potential at the measuring node as a measure for the capacitance of the measuring element, with a period counter, which determines the periods of the measuring potential, and with a clock counter, which determines the cycles of a clock signal, which lie within the duration of at least one period of the measuring potential. The invention relates to a measuring method for capacitive pressure and/or temperature measurement.