Component part and method for testing such a component part

US9588005B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Jochen Zoellin · Memmingen, DE
• Ricardo Ehrenpfordt · Gerlingen, DE
• Juergen Graf · Stuttgart, DE
• Christoph Schelling · Stuttgart, DE
• Frederik Ante · Stuttgart, DE
• Michael Curcic · Stuttgart, DE

Key dates

• Filing date: Aug 27, 2013
• Grant date: Mar 7, 2017
• Expiry date: Oct 31, 2034

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04R2201/003
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Measures are described which simplify the functional testing of a component having an MEMS element provided with a pressure-sensitive sensor diaphragm, and which allow a self-calibration of the component even after it is already in place, i.e., following the end of the production process. The component has a housing, in which are situated at least one MEMS element having a pressure-sensitive sensor diaphragm and a switching arrangement for detecting the diaphragm deflections as measuring signals; an arrangement for analyzing the measuring signals; and an arrangement for the defined excitation of the sensor diaphragm. The housing has at least one pressure connection port. The arrangement for exciting the sensor diaphragm includes at least one selectively actuable actuator component for generating defined pressure pulses that act on the sensor diaphragm.