Sensor device, especially a hall sensor, with a binary output and a fault detection circuit

US6014091A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Ralf Noltemeyer · Wernau, DE
• Horst Fuhrmann · Bornsteiner Straße, DE

Key dates

• Filing date: Jul 2, 1997
• Grant date: Jan 11, 2000
• Expiry date: Jul 2, 2017

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R31/2829
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A device for detecting faults including sensor failure in a sensor that outputs a substantially binary output signal is described. For fault detection, the various terminals of the sensor are supplied with substantially binary voltages from a fault detection circuit and the changes in the output signal of the sensor that occur as a consequence of the supplied voltages are evaluated for fault detection.