Sensor system with monitoring device

US6625527B1 · kind B1 · utility

Assignee

• Continental Teves AG & Co. OHG · DE

Inventors

• Eve Limin Ding · Senftenberg - Zły Komorow, DE
• Ralf Herbst · Zeil am Main, DE

Key dates

• Filing date: Dec 11, 2001
• Grant date: Sep 23, 2003
• Expiry date: Dec 11, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T2270/413
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A sensor system with monitoring device wherein the sensor system includes at least two redundant sensors for gathering a process reference variable or process measured variable of a process, and in that the monitoring device includes a first subtractor for producing a first difference between the sensor output signals, a first and a second differentiator for the time derivative of the sensor output signals, a second subtractor for producing a second difference between the differentiated sensor output signals, and a fault analysis device by which the first and the second difference is respectively compared with a predeterminable first or second threshold value, and a fault message is produced when at least one of the differences exceeds the threshold value concerned.