Communication method and communication module

• US 20050015380A1
• Filed: 06/20/2002
• Published: 01/20/2005
• Est. Priority Date: 08/17/2001
• Status: Abandoned Application

• Current Assignee: DaimlerChrysler AG (Mercedes-Benz Group AG)
• Original Assignee: DaimlerChrysler AG (Mercedes-Benz Group AG)
• Inventors: Koser, Steffen, Heinzelmann, Andreas, Burkhardt, Rainer
• Application Number:
  US10/486,701
• Publication Number:
  US 20050015380A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 41/06 Management of faults, events, alarms or notifications
• CPC Class Codes: H04L 43/50 Testing arrangements

Abstract

The document proposes a method for communication between a plurality of local applications and a diagnostic application in a motor vehicle, where data are transmitted from the local applications to the diagnostic application using a transmission medium, and a corresponding communication module having the steps of event-oriented provision of the data by the local applications, acceptance of the data by a communication module when initiated by the event-oriented provision of the data, management and conditioning of the data by the communication module, and transfer of the conditioned data from the communication module to the central application, with the conditioning of all the data accepted from the local applications, within the communication module, comprising data formatting into a data format which is determined by the central application. The method and the communication module are particularly suitable for performing an onboard system diagnosis in motor vehicles.

Claims

1-14. -14. (Cancelled)

15. A method for communication of data between local applications and a diagnostic application in a motor vehicle, via a transmission medium, said method comprising:

event-oriented provision of data by the local applications;

acceptance of said data by a communication module when initiated by the event-oriented provision of said data;

management and conditioning of the data by the communication module; and

transfer of the conditioned data from the communication module to the diagnostic application;

wherein

conditioning of data accepted from the local applications, within the communication module, comprises data formatting into a data format which is determined by the diagnostic application and is independent of the local applications.

18. The method as claimed in claim 15, wherein at least one of the following is true:

the local applications are control unit applications in control units in the motor vehicle; and

the method is used for onboard diagnosis.

19. The method as claimed in claim 18, wherein data conditioning comprises a local preliminary diagnosis in at least one control unit.

20. The method as claimed in claim 15, wherein at least one of the following is true:

management of the data comprises buffer-storage of the data;

data conditioning comprises compression; and

data conditioning involves selection of the data.

21. The method as claimed in claim 15, wherein the transfer of the conditioned data from the communication module to the diagnostic application is controlled by the communication module.

22. The method as claimed in claim 15, wherein the data are managed by the communication module such that one of the following is true:

data transfer to the diagnostic application can take place in a fixed cycle;

data transfer to the diagnostic application takes place only for data in the communication module which have changed with respect to the past cycle.

23. The method as claimed in claim 22, wherein a cycle for data transfer to the diagnostic application is triggered by the local applications.

24. The method as claimed in claim 15, wherein the data comprise one of error state data, input/output state data, internal state data from the local applications, and analog values.

26. A networked diagnostic system in a motor vehicle for performing the method as claimed in claim 18, said system comprising:

control unit applications as local applications;

a system diagnosis application as a central application; and

a communication module comprising data acceptance means for event-oriented acceptance of data from the control unit applications, data conditioning means for managing and conditioning the data and at least one data transfer interface to the system diagnosis application;

wherein

the data conditioning means format the data accepted from the control unit applications into a data format which is determined by the system diagnosis application and is independent of the control unit applications.

28. The diagnostic system as claimed in claim 26, wherein at least one of the following is true:

the communication module includes means for providing data for the local applications; and

the communication module has means for controlling the local applications.

29. The diagnostic system as claimed in claim 26, wherein

control units are connected to a diagnostic unit by means of a network interconnection;

the data acceptance means for the event-oriented acceptance of data from the control unit applications and the data conditioning means for managing and conditioning the data are located in a submodule of the communication module in the control units;

the data transfer interface for transferring data to the system diagnosis application is located in the diagnostic unit; and

the submodule has means for sending data via the network interconnection to the data transfer interface in the diagnostic unit.

16. A method for communication of data between local applications and a diagnostic application in a motor vehicle, via a transmission medium, said method comprising:

aligning a communication module with the local applications in a configuration phase;

the local applications, providing data on an event oriented basis;

the communication module accepting data when initiated by the event-oriented provision of the data;

the communication module managing and conditioning the data; and

transferring the conditioned data from the communication module to the diagnostic application;

wherein

the conditioning of data accepted from the local applications, within the communication module, comprises data formatting into a data format which is determined by the diagnostic application and is independent of the local applications.

17. The method as claimed in claim 16, wherein said alignment comprises stipulation of data management and data conditioning algorithms in the communication module based on the type of the local applications, the type of hardware on which the local applications operate, the versions of the local applications, the version of the hardware on which the local applications operate and/or the configuration of the hardware, to suit a transmission protocol between the local applications and the diagnostic application.