Capacitive sensor and measurement system

US7880481B2 · kind B2 · utility

Assignee

• Infineon Technologies AG · DE

Inventors

• Hubert Zangl · Graz, AT
• Thomas Bretterklieber · Lieboch, AT
• Gert Holler · Graz, AT
• Georg Brasseur · Wien, AT
• Tobias Werth · Villach, AT
• Dirk Hammerschmidt · Villach, AT
• Mario Motz · Wernberg, AT

Key dates

• Filing date: Dec 19, 2007
• Grant date: Feb 1, 2011
• Expiry date: May 28, 2029

Classification

• Technology area (CPC G): Physics
• CPC primary: G01D5/24
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A system includes a capacitive sensor including a first electrode and a second electrode. The system includes a measurement system configured to sense a capacitance between the first electrode and the second electrode and apply a first offset to the sensed capacitance to provide an offset compensated capacitance.