Sensor device with self-test capability

US8938364B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Patrick Goerlich · Reutlingen, DE
• Riad Stefo · Reutlingen, DE
• Wolfram Bauer · Lörrach, DE
• Rainer Willig · Tamm, DE
• Burkhard Kuhlmann · Reutlingen, DE
• Mathias Reimann · Ditzingen, DE
• Ermin Esch · Neckartenzlingen, DE
• Michael Baus · Bietigheim-Bissingen, DE
• Gregor Wetekam · Reutlingen, DE
• Michael Veith · Reutlingen, DE
• Emma Abel · Esslingen am Neckar, DE
• Wolfgang Fuerst · Reutlingen, DE

Key dates

• Filing date: Jul 9, 2010
• Grant date: Jan 20, 2015
• Expiry date: Jun 29, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49004
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A sensor device includes: a sensor module mounted on a conductor board; a sensitive element which is sensitive to a variable; a self-test control unit implementing a self-test program, the self-test control unit applying a self-test variable to the sensitive element, taking the self-test program into account; a detection unit detecting a characteristic of the sensitive element which is altered as a result of the applied self-test variable and providing an actual self-test response, taking the altered characteristic into account; and a comparator unit provided on or in the sensor module, the comparator unit comparing the actual self-test response to at least one specified setpoint self-test response and providing comparative information.