Apparatus and method for programming motor vehicle electronic control units

• US 20040254689A1
• Filed: 12/18/2003
• Published: 12/16/2004
• Est. Priority Date: 06/10/2003
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations Incorporated (Motors Liquidation Co. GUC Trust)
• Inventors: Diliddo, Mark C., Stiles, William O.F. Jr., Wist, Alan D., Blazic, Erik L.
• Granted Patent: US 7,155,324 B2
• Time in Patent Office: Days
• US Class Current: 701/1
• CPC Class Codes: G06F 8/61 Installation

Abstract

Methods and apparatuses are provided for programming a plurality of Electronic Control Units (ECUs) for controlling devices in a motor vehicle. A host module positioned within the vehicle is coupled to each of the ECUs. The host module stores the software programs to be downloaded to the ECUs. A software down load enabler included in the host module is responsive to a radio frequency control signal to cause said host module to download the software programs to the ECUs. A software down load initiator is located external to the vehicle. The software down load initiator is selectively coupled to the software down load enabler. The software down load initiator provides the control signal to initiate the download of the software programs from the host module to each ECU so that each ECU can control the functioning of a device connected thereto.

Claims

1. An apparatus for programming a plurality of electronic control units of a vehicle, each electronic control unit being coupled to at least one device within the vehicle, and each electronic control unit being adapted to control the functioning of the device connected thereto in response to a software program stored in a memory of the electronic control unit, the apparatus comprising:

a host module positioned within the vehicle, said host module being coupled to each of the electronic control units, and said host module including a memory that stores software programs to be downloaded for controlling the functioning of the devices;

a software down load enabler included in said host module, said software down load enabler being coupled to said memory of said host module, and said software down load enabler being responsive to a control signal to cause said host module to download at least one of said software programs from said memory thereof so that the program can be stored in the memory of at least one of the electronic control units; and

a software down load initiator selectively coupled to said software down load enabler, said software down load initiator providing said control signal to said down load enabler to initiate said download of said software program from said memory of said host module to the memory of each electronic control unit so that each electronic control unit can control the functioning of the device connected thereto.

2. The apparatus of claim 1 further including:

a software load station located external to the vehicle; and

a connector adapted to connect said software load station to said host module so that the software programs for controlling the functions of the devices can be loaded from said software load station into said memory of said host module; and

said connector being adapted to be disconnected from said host module after said software programs are loaded into said host module.

3. The apparatus of claim 1 further including an interrogation station, said interrogation station being temporarily coupled to receive information obtained from said memories of each of said electronic control units to ascertain the statuses of said downloaded software programs.

4. The apparatus of claim 1 wherein:

said software download initiator is located external to the vehicle;

a first wireless control node being included in said software down load initiator; and

a second wireless control node being included in said host module, said second wireless control node being coupled to said software down load enabler included in said host module, said first wireless control node being adapted to provide a radio frequency signal for communicating said control signal to said second wireless control node, said second wireless control node being responsive to said control signal communicated by said radio frequency signal to cause said host module to download said software program from said host module to each of the electronic control units.

5. The apparatus of claim 4 wherein said first wireless control node and said second wireless control node operate in accordance with a radio frequency wireless standard.

6. The apparatus of claim 1 wherein:

a signal coupler being included in said host module, said signal coupler providing a signal path from said host module to the memories of each of the electronic control units;

said software down load enabler being responsive to said control signal to cause said memory of said host module to download said software programs to the memory of each of the electronic control units; and

said software down load initiator being selectively coupled to said software down load enabler, said software down load initiator providing said control signal to said software down load enabler which results in said memory of said host module downloading said software programs to said memory of each of the electronic control units.

7. The apparatus of claim 6 wherein said memory of each of said electronic control units is a nonvolatile memory.

8. The apparatus of claim 6 wherein:

said software download initiator is located external to the vehicle;

a first a wireless control node being included in said software down load initiator; and

a second wireless control node being included in said host module, said second wireless control node being coupled to said software down load enabler;

said first wireless control node being adapted to provide a radio frequency signal for communicating said control signal to said second wireless control node, said second wireless control node being responsive to said control signal communicated by said radio frequency signal to cause said memory of said host module to download said software programs to each of the electronic control units.

9. The apparatus of claim 8 further including an interrogation station, said interrogation station including a third wireless node, said memory of said host module storing information obtained from each of said memories of each of said electronic control units relating to the statuses of said downloaded software programs, said third wireless node being temporarily coupled through said second wireless node of said host module to receive said information stored in said memory of said host module.

10. A method for programming a plurality of electronic control units of a vehicle, each electronic control unit being coupled to at least one device within the vehicle, and each electronic control unit being adapted to control the functioning of the device connected thereto in response to a software program stored in a memory thereof, the method comprising the steps of:

providing a host module;

coupling said host module to each of the electronic control units;

including a memory in said host module for storing software programs for controlling the functioning of the devices;

further including a software down load enabler in said host module;

arranging said software down load enabler to be responsive to a control signal to cause said host module to download at least one of said software programs from said memory thereof to the memory of each of the electronic control units;

providing a software down load initiator;

selectively coupling said software down load initiator to said software down load enabler when said down load is to be initiated; and

arranging said software down load initiator to provide said control signal to said down load enabler to initiate said download of said software program to the memory of each electronic control unit so that each electronic control unit can control the functioning of the device connected thereto.

11. The method of claim 10 further including the steps of:

providing a software load station at a position located external to the vehicle; and

temporarily connecting said software load station to said host module;

loading the software programs for controlling the function of the devices from said software load station into said memory of said host module;

disconnecting said software load station from said host module after said software programs are loaded into said host module; and

installing said host module in a vehicle.

12. The method of claim 11 wherein the step of loading the software programs further includes the steps of:

identifying the unique software to be downloaded to the host module;

providing an identifier for said host module; and

sending said identifier to a scheduling system.

13. The method of claim 10 further including the steps of:

providing an interrogation station at a position external to the vehicle;

coupling said interrogation station to said host module;

arranging said interrogations station to receive status information obtained from said memory of each of said electronic control units; and

de-coupling said interrogation station from said host module.

14. The method of claim 10 further including the steps of:

locating said software download initiator at a position external to the vehicle;

providing a first wireless control node in said software down load initiator; and

providing a second wireless control node in said host module;

coupling said second wireless control node to said software down load enabler;

adapting said first wireless control node to provide a radio frequency signal for communicating said control signal to said second wireless control node; and

arranging said second wireless control node to be responsive to said control signal to cause said host module to download said software program to each of the electronic control units.

15. The method of claim 14 wherein said step of arranging said second control node to be responsive to said control signal to cause said host module to download said software program to each of the electronic control units, further includes the steps of:

retrieving a vehicle identifier; and

programming the memories of the electronic control units of the vehicle with software from said host module.

16. The method of claim 14 further including the steps of:

determining the statuses of the programs in the electronic control units; and

obtaining information relating vehicle diagnostic trouble codes.

17. The method of claim 14 further including a step of operating said first wireless control node and said second wireless control node in accordance with a Bluetooth commercial RF wireless standard.

18. The method of claim 10 further comprising the steps of:

providing a signal coupler in said host module; and

providing a signal path through said signal coupler from said memory of said host module to the memory of each of the electronic control units so that software can be downloaded through said signal path.

19. The method of claim 10 further comprising the steps of:

selectively positioning said software download initiator external to the vehicle;

including a first a wireless control in said software down load initiator;

further including a second wireless control node in said host module;

coupling said second wireless control node to said software down load enabler;

adapting said first wireless control node to provide a radio frequency signal for communicating said control signal to said second wireless control node; and

arranging said second wireless control node to respond to said control signal communicated by said radio frequency signal to cause said memory of said host module to download said software programs to each of the electronic control units.

20. The method of claim 19 comprising the further steps of:

providing an interrogation station external to the vehicle;

including a third wireless node in said interrogation station; and

temporarily coupling said third wireless node through said second wireless node of said host module to receive information obtained from each of said memory of each of said electronic control units to communicate the statuses of said downloaded software programs.

21. The method of claim 20 further comprising the step of providing said statuses of said downloaded programs to a reporting system.