Piezoelectric sensor

US7603906B2 · kind B2 · utility

Assignee

• Piezocryst Advanced Sensorics GmbH · AT

Inventors

• Dietmar Kröger · Graz, AT
• Michael Hirschler · Graz, AT
• Alexander Friedl · Graz, AT
• Alexander Schricker · Graz, AT
• Ferdinand Krispel · Wundschuh, AT
• Wolfgang Michelitsch · Graz, AT

Key dates

• Filing date: Jun 5, 2007
• Grant date: Oct 20, 2009
• Expiry date: Jun 5, 2027

Classification

• Technology area (CPC G): Physics
• CPC primary: G01L23/10
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A piezoelectric sensor, preferably a pressure sensor, comprising at least two piezoelectric measuring elements placed in a housing, which are clamped between a membrane on the pressured side of the housing and a pick-up electrode electrically insulated against the housing. The piezoelectric measuring elements are fixedly attached to the pick-up electrode by thermo-compression or soldering and together with said pick-up electrode form a compact measuring element stack, which will significantly simplify assembly of the piezoelectric sensor.