Device and method for monitoring a sensor clock signal

US11549822B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Michael Haug · Stuttgart, DE
• Guenter Weiss · Walheim, DE
• Michel Walz · Eningen unter Achalm, DE
• Daniela Bommer · Leonberg, DE
• Frank Schou · Ditzingen, DE
• Rainer Gschwind-Schilling · Rutesheim, DE
• Darko Rozic · Reutlingen, DE
• Mustafa Ajanovic · Sindelfingen, DE
• Joerg Conradt · Kornwestheim, DE
• Marlon Ramon Ewert · Untergruppenbach, DE
• Kevin Haist · Ditzingen, DE

Key dates

• Filing date: Sep 19, 2018
• Grant date: Jan 10, 2023
• Expiry date: Aug 13, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L7/08
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method monitors a sensor clock signal in a sensor unit, which is generated and output for a data transfer between the sensor unit and a control unit with a predefined period duration. A reference clock signal having a predefined reference period duration is received. The sensor clock signal is compared to the reference clock signal. Based on the comparison, a deviation of the current period duration of the sensor clock signal from a target period duration is detected. Based on the detected deviation, a counting pulse or a reset pulse is emitted.