Device for controlling electrical systems with a test module

• US 7,319,925 B2
• Filed: 03/16/2002
• Issued: 01/15/2008
• Est. Priority Date: 05/26/2001
• Status: Active Grant

• Current Assignee: Chemtron Research LLC (Intellectual Ventures LLC)
• Original Assignee: Daimler Chrysler Company LLC (Stellantis NV)
• Inventors: Gisy, Ralf, Grohmann, Dieter
• Primary Examiner(s): NGUYEN, TAN QUANG
• Application Number:
  US10/478,723
• Publication Number:
  US 20040232770A1
• Time in Patent Office: 2,131 Days
• Field of Search: 701/29, 701/30, 701/33, 701/35.1
• US Class Current: 701/29
• CPC Class Codes: B60W 2050/0004 In digital systems, e.g. discrete-time systems involving sampling
• CPC Class Codes: B60W 2050/0075 Automatic parameter input, automatic initialising or calibrating means
• CPC Class Codes: B60W 2050/0082 for initialising the control system
• CPC Class Codes: B60W 2556/45 External transmission of data to or from the vehicle
• CPC Class Codes: B60W 50/00 Details of control systems for road vehicle drive control not related to the control of a particular sub-unit , e.g. process diagnostic or vehicle driver interfaces
• CPC Class Codes: B60W 50/04 Monitoring the functioning of the control system
• CPC Class Codes: B60W 50/045 Monitoring control system parameters
• CPC Class Codes: H04L 12/40032 Details regarding a bus interface enhancer
• CPC Class Codes: H04L 2012/40267 Bus for use in transportation systems
• CPC Class Codes: H04L 43/50 Testing arrangements

Abstract

A device for controlling electrical systems of a means of transportation that is encapsulated within a housing provided with an external interface and that has a microcomputer for executing control programs and storage means on which control programs for actuating an electrical component and signals of the component can be stored, the signals being exchanged via an internal interface by actuation software of the electrical component. According to the invention, a test module is provided within the housing and at the internal interface of the component, which test module evaluates the signals of the component which are exchanged via the interface, in order to test the satisfactory functioning of an internal component or of the control program.

Claims

1. A device for controlling electrical systems of a means of transportation, which is encapsulated within a housing provided with an external interface and which has a microcomputer for executing a control program and storage means on which control programs for actuating an electrical component and signals of the component can be stored, the signals being exchanged via an internal interface by actuation software of the electrical component, and a test module being provided within the housing and at the internal interface of the electrical component in order to evaluate the signals of the electrical component which are exchanged via the interface and in order to test a satisfactory functioning of the electrical component or of the control program, wherein an internal sensor or internal actuator is arranged as an internal component within the encapsulated housing, in that the test module is arranged between the control program and the internal component where an entire data flow to and from the electrical component or internal component to be tested runs and in that the test module checks the incoming or outgoing signals of the internal component for faults.

2. The device of claim 1, wherein the test module at the internal interface interrupts transmission of signals of the control program and feeds in equivalent signals in order to permit testing during normal operation of the device.

3. The device of claim 1, wherein the test module feeds in test signals for the component at the interface.

4. The device of claim 1, wherein the test module has means for measuring, triggering and adapting analog signals.

5. The device of claim 1, wherein the test module receives signals from a test and simulation system which is connected to the external interface, carries out a test process with said signals from said test and simulation system, and exports result data via the external interface.

6. The device of claim 1, wherein the test module is a modular software program which is stored on the storage means of the device in order to test components arranged within the housing.

7. The device of claim 1, wherein, during the normal operation, the test module tests parts of the control program by feeding equivalent signals for the signals of the sensor into the control program.

8. A vehicle control device, said device having a storage means and being encapsulated within a housing having an external interface, comprising:

a microcomputer for executing a control program;

an internal component;

an internal interface; and

a test module;

wherein said storage means stores said control program and signals of said internal component or an external component,

wherein said test module evaluates signals sent to and from said internal component or said external component,

wherein said test module tests said internal component or said external component or said control program, and

wherein said internal component or said external component communicates with said test module via said interface.

9. The device of claim 8, wherein said test module interrupts transmission of signals of said control program via said internal interface and feeds equivalent signals in order to permit testing during a normal operation of the device.

10. The device of claim 8, wherein said test module feeds test signals for said internal component or said external component at said internal interface.

11. The device of claim 8, wherein said test module comprises means for measuring, triggering, and adapting analog signals.

12. The device of claim 8, wherein said test module receives signals from a test and simulation system which is connected to said external interface, carries out the test process with signals from said test and simulation system, and exports result data via said external interface.

13. The device of claim 8, wherein said test module is a modular software program stored in said storage means in order to test said internal component.

14. The device of claim 8, wherein said internal component comprises a sensor.

15. The device of claim 14, wherein, during normal operation, said test module tests parts of said control program by feeding equivalent signals for signals of said internal component into said control program.

16. The device of claim 8, wherein said internal component comprises an actuator.