Vehicle data bus system comprising a sensor module

• US 20050080517A1
• Filed: 11/12/2002
• Published: 04/14/2005
• Est. Priority Date: 11/22/2001
• Status: Abandoned Application

• Current Assignee: Daimler AG (Mercedes-Benz Group AG)
• Original Assignee: Daimler AG (Mercedes-Benz Group AG)
• Inventors: Keppler, Martin, Hiemer, Peter
• Application Number:
  US10/496,583
• Publication Number:
  US 20050080517A1
• Time in Patent Office: Days
• US Class Current: 701/1
• CPC Class Codes: B60T 2250/06 Sensor zero-point adjustment; Offset compensation
• CPC Class Codes: B60T 2250/062 loosing zero-point calibration of yaw rate sensors when travelling on banked roads or in case of temperature variations
• CPC Class Codes: G01C 21/28 with correlation of data from several navigational instruments
• CPC Class Codes: G01C 25/00 Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass testing, calibrating or compensating compasses G01C17/38

Abstract

A vehicle data bus system having one or more data buses, via which a plurality of connected bus users are connected for data transmission, having a sensor module which is embodied as a bus user and has a rotational speed sensor, the sensor module being configured to output rotational speed data onto the data bus, and having a vehicle movement dynamics/wheel slip control system which is embodied as a bus user and which is designed to receive at least the rotational speed data via the data bus. At least one further bus user is designed to receive the rotational speed data via the data bus, the sensor module is configured to preprocess the rotational speed data and to output the preprocessed rotational speed data onto the data bus, and the vehicle movement dynamics/wheel slip control system and/or the further bus user are configured to perform an offset correction of the received preprocessed rotational speed data.

Claims

1. A vehicle data bus system including at least one data bus connected to a plurality of bus users for data transmission wherein:

a first one of said bus users is a sensor module having a rotational speed sensor, the sensor module outputting rotational speed data onto one of said at least one data bus

a second one of said bus users is a vehicle movement dynamic/wheel slip control system receiving at least the rotational speed data via said one data bus,

at least one further bus user receives the rotational speed data via said one data bus,

the sensor module preprocesses the rotational speed data and outputs the preprocessed rotational speed data onto said one data bus, and,

at least one of the vehicle movement dynamics/wheel slip control system and the at least one further bus user provides an offset correction of the received preprocessed rotational speed data.

4. The vehicle data bus system as claimed in claim 1, wherein the preprocessing of the rotational speed data comprises oversampling and at least one of filtering and averaging the sensor data.

5. The vehicle data bus system as claimed in claim 1, wherein the vehicle movement dynamics/wheel slip control system is connected, for data transmission, to at least the at least one further bus user via a first data bus, and wherein the vehicle movement dynamics/wheel slip control system is connected, for data transmission, to at least the sensor module, via a second data bus.

6. The vehicle data bus system as claimed in claim 5, wherein the vehicle movement dynamics/wheel slip control system receives at least one of the preprocessed rotational speed data and/or the offset-corrected rotational speed data via the second data bus, and outputs the at least one of the preprocessed rotational speed data and the offset-corrected rotational speed data onto the first data bus.

7. The vehicle data bus system as claimed in claim 5 wherein the vehicle movement dynamics/wheel slip control system receives the wheel speed data via the first data bus, and outputs the offset data via the second data bus.

8. The vehicle data bus system as claimed in claim 1, wherein the rotational speed data comprises at least one of angle of rotation data and angle of rotation speed data and angle of rotation acceleration data.

9. The vehicle data bus system as claimed in claim 1, wherein the integration of the rotational speed data to form angle of rotation data takes place in at least one of the sensor module and a navigation module and the vehicle movement dynamics/wheel slip control system.

10. The vehicle data bus system as claimed in claim 1, wherein the sensor module further comprises at least one of a longitudinal acceleration sensor and a transverse acceleration sensor.

11. The vehicle data bus system as claimed in claim 1, wherein the at least one further bus user is one of a navigation module and a locating module.

12. The vehicle data bus system as claimed in claim 1, wherein the angle of rotation data is transmitted in a data message via said one data bus, the value of which data changes to 0°

or from 0°

to the maximum value as a function of the direction of rotation of the vehicle when a maximum value is reached.

16. The vehicle data bus system as claimed in claim 6, wherein the vehicle movement dynamics/wheel slip control system receives the wheel speed data via the first data bus, and outputs the offset data via the second data bus.

2. A vehicle data bus system including at least one data bus connected to a plurality of bus users for data transmission wherein;

a first one of said bus users is a sensor module having a rotational speed sensor, the sensor module providing preprocessing of the rotational speed data, to carry out an offset correction of the preprocessed rotational speed data and outputting the offset-corrected rotational speed data onto one of the at least one data bus

a second one of said bus users is a vehicle movement dynamics/wheel slip control system receiving at least the offset-corrected rotational speed data via said one data bus

at least one further bus user receives the offset-corrected rotational speed data via said one data bus,

the vehicle movement dynamics/wheel slip control system receives at least wheel speed data via said one data bus, to acquire at least offset data and to output the offset data onto said one data bus, and

the sensor module receives at least the offset data via said data bus and acquires the offset-corrected rotational speed data using the offset data.

3. The vehicle data bus system as claimed in claim 2, wherein the sensor module is outputs the preprocessed rotational speed data onto said one data bus, and wherein at least one of the vehicle movement dynamics/wheel slip control system and the at least one further bus user are configured to receive the preprocessed rotational speed data and to carry out an offset correction of the preprocessed rotational speed data.

13. The vehicle data bus system as claimed in claim 2, wherein the preprocessing of the rotational speed data comprises oversampling and at least one of filtering and averaging the sensor data.

14. The vehicle data bus system as claimed in claim 2, wherein the vehicle movement dynamics/wheel slip control system is connected, for data transmission, to at least the at least one further bus user via a first data bus, and wherein the vehicle movement dynamics/wheel slip control system is connected, for data transmission, to at least the sensor module, via a second data bus.

15. The vehicle data bus system as claimed in claim 14, wherein the vehicle movement dynamics/wheel slip control system receives at least one of the preprocessed rotational speed data and/or the offset-corrected rotational speed data via the second data bus, and outputs the at least one of the preprocessed rotational speed data and the offset-corrected rotational speed data onto the first data bus.

17. The vehicle data bus system as claimed in claim 2, wherein the rotational speed data comprises at least one of angle of rotation data and angle of rotation speed data and angle of rotation acceleration data.

18. The vehicle data bus system as claimed in claim 2, wherein the integration of the rotational speed data to form angle of rotation data takes place in at least one of the sensor module and a navigation module and the vehicle movement dynamics/wheel slip control system.

19. The vehicle data bus system as claimed in claim 2, wherein the sensor module further comprises at least one of a longitudinal acceleration sensor and a transverse acceleration sensor.

20. The vehicle data bus system as claimed in claim 2, wherein the at least one further bus user is one of a navigation module and a locating module.