Circuit arrangement and method for monitoring wheel speed sensors in a motor vehicle control device

US8154837B2 · kind B2 · utility

Assignee

• Continental Teves AG & Co. OHG · DE

Inventors

• René Trapp · Föckelberg, DE
• Frank Michel · Rosbach, DE

Key dates

• Filing date: Aug 10, 2006
• Grant date: Apr 10, 2012
• Expiry date: Jun 20, 2027

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T2270/416
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Circuit arrangement (2,3,4,5) in an electronic control device which is connected to at least one wheel speed sensor channel (6,7,8,9) transmitting wheel speed information, in particular in the form of a current signal, the circuit arrangement (2,3,4,5) having at least one monitoring module (U1,U2,U3,U4) for the at least one wheel speed sensor channel (6,7,8,9), where this at least one monitoring module (U1,U2,U3,U4) is suitable for monitoring an excess current fault on at least one wheel speed sensor channel (6,7,8,9), in which, when an excess current fault is detected by the at least one monitoring module (U1,U2,U3,U4) the respective wheel speed sensor channel(s) (6,7,8,9) is/are blocked by a blocking circuit (10,11,12,13) of the circuit arrangement (2,3,4,5), and/or in which the circuit arrangement (2,3,4,5) causes the blocking of the respective wheel sensor channel or channels (6,7,8,9) from outside the circuit arrangement (2,3,4,5).