System for establishing a vehicle parameter

• US 20060064240A1
• Filed: 09/17/2004
• Published: 03/23/2006
• Est. Priority Date: 09/17/2004
• Status: Active Grant

• Current Assignee: Mahle International GmbH (MAHLE-STIFTUNG GmbH)
• Original Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Inventors: Wurth, Lukas M.
• Granted Patent: US 7,460,950 B2
• Time in Patent Office: Days
• US Class Current: 701/201
• CPC Class Codes: B60C 23/061 by monitoring wheel speed measuring distance traversed on the ground by vehicles G01C22/00

Abstract

A system for establishing a vehicle parameter including collecting signals from a satellite and deriving a reference vehicle parameter from the satellite signals. Signals from a vehicle sensor are also collected and an estimated vehicle parameter is derived therefrom. Once the satellite signals and the estimated vehicle parameter signals are collected, parameters for a correction algorithm are generated and thereafter, the correction algorithm is applied to vehicle sensor signals to generate a corrected vehicle parameter or to generate a vehicle tire status parameter.

Claims

1. System for establishing a vehicle parameter, comprising:

receiving signals from a satellite,

deriving reference vehicle parameter data from said satellite signals

receiving signals from a vehicle sensor

deriving estimated vehicle parameter data from said vehicle sensor signals

using said reference vehicle parameter data to correct said estimated vehicle parameter data or to generate a tire status parameter.

2. The system of claim 1, wherein said using step includes generating a parameter for a correction algorithm using said reference vehicle parameter and said estimated vehicle parameter.

3. The system of claim 1, wherein said using step includes generating a look-up table.

4. The system of claim 1, wherein said corrected estimated parameter includes at least one of a vehicle speed or vehicle distance traversed.

5. The system of claim 1, wherein said reference vehicle parameter is vehicle speed.

6. The system of claim 1, wherein said reference vehicle parameter is vehicle distance traversed.

7. The system of claim 1, wherein receiving signals from a vehicle sensor include receiving wheel speed signals from a wheel speed sensor.

8. The system of claim 1, wherein said satellite is at least one satellite in a plurality of satellites.

9. The system of claim 2, wherein said generating parameters for a correction algorithm include generating parameters for a linear correction algorithm.

10. The system of claim 1, wherein said generating parameters for a correction algorithm include generating parameters for a piece-wise linear correction algorithm.

11. The system of claim 1 wherein said corrected estimated vehicle parameter data includes vehicle speed data.

12. The system of claim 1, wherein said corrected estimated vehicle parameter data includes vehicle distance traversed data.

13. The system of claim 1, wherein said tire status parameter includes tire air pressure.

14. The system of claim 1, wherein said tire status parameter includes tire wear.