Control Architecture for a Vehicle

Abstract

A control architecture for a vehicle connects a first control unit to a first vehicle communication network. A second control unit is connected to a second vehicle communication network. Commands are received by a plurality of commanded units from the first control unit and/or the second control unit over communication lines. An interlink communication line is connected between the first control unit to the second control unit.

Claims

1-10. (canceled)

11. A control architecture for a vehicle, the control architecture comprising: a first control unit; a second control unit; a first vehicle communication network circuit; a second vehicle communication network circuit; and a plurality of commanded units; wherein the first control unit is connected to the first vehicle communication network, wherein the second control unit is connected to the second vehicle communication network, and wherein the plurality of commanded units are configured to receive commands from the first control unit and/or the second control unit over communication lines; and an interlink communication line connects the first control unit to the second control unit.

12. The control architecture according to claim 11, wherein the control architecture is configured to transmit data between the first vehicle communication network and the second control unit through utilization of the interlink communication line, and the control architecture is configured to transmit data between the second vehicle communication network and the first control unit through utilization of the interlink communication line.

13. The control architecture according to claim 11, wherein the first control unit is communicatively connected to all of the plurality of commanded components, and the second control unit is communicatively connected to all of the plurality of commanded components.

14. The control architecture according to claim 11, wherein in a first mode of operation, the first control unit is configured to act as a master controller and the second control unit is configured to act as a slave controller, and in a second mode of operation, the second control unit is configured to act as a master controller and the first control unit is configured to act as a slave controller.

15. The control architecture according to claim 14, wherein the determination of the mode of operation comprises a communication over the interlink communication line.

16. The control architecture according to claim 15, wherein the determination of the mode of operation is performed according to an algorithm and aligned over the interlink communication line.

17. The control architecture according to claim 14, wherein the determination of the mode of operation is performed by the first control unit and/or the second control unit.

18. The control architecture according to claim 11, wherein the first control unit and the second control unit are configured to utilize the interlink communication line to transmit data between the control units to perform a plausibility check and/or a crosscheck task.

19. A control method for a control architecture of a vehicle, the method comprising the steps of: a) connecting a first control unit to a first vehicle communication network; b) connecting a second control unit to a second vehicle communication network; c) receiving commands by a plurality of commanded units from the first control unit and/or the second control unit over communication lines; d) connecting an interlink communication line between the first control unit to the second control unit.

20. The method according to claim 19, the method further comprising: e) transmitting data between the first vehicle communication network and the second control unit through the interlink communication line; or f) transmitting data between the second vehicle communication network and the first control unit through the interlink communication line.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG. 1 is a schematic representation of an example of a control architecture for a vehicle;

[0031] FIG. 2 shows a control method for a control architecture of a vehicle.

DETAILED DESCRIPTION OF EMBODIMENTS

[0032] FIG. 1 shows an example of a control architecture 20 for a vehicle. The control architecture comprises a first control unit 3, a second control unit 4, a first vehicle communication network circuit 1, a second vehicle communication network circuit 2, and a plurality of commanded units 6, 7, 8, 9. The first control unit is connected to the first vehicle communication network. The second control unit is connected to the second vehicle communication network. The plurality of commanded units are configured to receive commands from the first control unit and/or the second control unit over communication lines 10, 11. An interlink communication line 5 connects the first control unit to the second control unit. The example shown has two control units, but there could be more than two, with a first set of the control units being connected to the first vehicle communication network with the rest (a second set) being connected to the second vehicle communication network. Interlink communication lines would then connect the first set of control units to the second set of control units.

[0033] According to an example, the control architecture is configured to transmit data between the first vehicle communication network and the second control unit through utilization of the interlink communication line. The control architecture is configured also to transmit data between the second vehicle communication network and the first control unit through utilization of the interlink communication line.

[0034] According to an example, the first control unit is communicatively connected to all of the plurality of commanded components; and wherein the second control unit is communicatively connected to all of the plurality of commanded components.

[0035] According to an example, in a first mode of operation the first control unit is configured to act as a master controller and the second control unit is configured to act as a slave controller, and in a second mode of operation the second control unit is configured to act as a master controller and the first control unit is configured to act as a slave controller.

[0036] In an example, there can be more than two control units, with acting as the master and the rest acting as slaves. Thus, if there were three control units, then using the above nomenclature there can be three modes of operation, where in each mode a different control unit acts as the master, with the rest acting as slaves. This then applies for four, five six control units, where there would be four, five and six modes of operation, etc.

[0037] According to an example, the determination of the mode of operation comprises a communication over the interlink communication line.

[0038] According to an example, the determination of the mode of operation is performed according to an algorithm and the control units are aligned over the interlink communication line.

[0039] According to an example, the determination of the mode of operation is performed by the first control unit and/or the second control unit.

[0040] According to an example, the first control unit and the second control unit are configured to utilize the interlink communication line to transmit data between the control units to perform a plausibility check and/or a crosscheck task.

[0041] FIG. 2 shows a control method 100 for a control architecture of a vehicle in its basic steps, where optional steps are shown in dashed form. The method 100 comprises:

[0042] in a connecting step 110, also referred to as step a), connecting a first control unit 3 to a first vehicle communication network 1;

[0043] in a connecting step 120, also referred to as step b), connecting a second control unit 4 to a second vehicle communication network;

[0044] in a receiving step 130, also referred to as step c), receiving commands by a plurality of commanded units from the first control unit and/or the second control unit over communication lines 10, 11; and

[0045] in a connecting step 140, also referred to as step d), connecting an interlink communication line 5 between the first control unit to the second control unit.

[0046] According to an example, the method comprises:

[0047] in a transmitting step 150, also referred to as step e), transmitting data between the first vehicle communication network and the second control unit through the interlink communication line; or

[0048] in a transmitting step 160, also referred to as step f), transmitting data between the second vehicle communication network and the first control unit through the interlink communication line.

[0049] In an example, the first control unit is communicatively connected to all of the plurality of commanded components; and the second control unit is communicatively connected to all of the plurality of commanded components.

[0050] In an example, in a first mode of operation the first control unit acts as a master controller and the second control unit acts as a slave controller; and in a second mode of operation the second control unit acts as a master controller and the first control unit acts as a slave controller.

[0051] In an example, the determination of the mode of operation comprises a communication over the interlink communication line.

[0052] In an example, the determination of the mode of operation is performed according to an algorithm and aligned over the interlink communication line.

[0053] In an example, the determination of the mode of operation is performed by the first control unit and/or the second control unit.

[0054] In an example, the first control unit and the second control unit utilise the interlink communication line to transmit data between the control units to perform a plausibility check and/or a crosscheck task.

[0055] A detailed example is now described, again using FIG. 1. In this detailed example, a redundant controller architecture is shown, that has two control units 3, 4, each of them is connected to one of the redundant vehicle communication network circuits 1, 2. There is an interlink communication line 5 between the control units. Each control unit is connected to some commanded units 6, 7, 8, 9 by further control lines 10, 11, and each control unit can be connected to each of the commanded units as shown. One of the control units has a master role, while the other has a slave role. The determination of the master-slave role division is performed by the control units according to an appropriate algorithm and aligned through the interlink communication line.

[0056] In this way, having the interlink communication line between the control units makes it possible to mitigate the situation where one of the vehicle communication networks is in failure or down. In such a case data from the intact vehicle communication network can be transmitted to the other control unit via the interlink communication line. The interlink communication also provides opportunity to perform plausibility check or crosscheck tasks to increase safety.

[0057] It has to be noted that embodiments of the invention are described with reference to different subject matters. In particular, some embodiments are described with reference to method type claims whereas other embodiments are described with reference to the device type claims. However, a person skilled in the art will gather from the above and the following description that, unless otherwise notified, in addition to any combination of features belonging to one type of subject matter also any combination between features relating to different subject matters is considered to be disclosed with this application. However, all features can be combined providing synergetic effects that are more than the simple summation of the features.

[0058] While the invention has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive. The invention is not limited to the disclosed embodiments. Other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing a claimed invention, from a study of the drawings, the disclosure, and the dependent claims.

[0059] In the claims, the word “comprising” does not exclude other elements or steps, and the indefinite article “a” or “an” does not exclude a plurality. A single processor or other unit may fulfill the functions of several items re-cited in the claims. The mere fact that certain measures are re-cited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. Any reference signs in the claims should not be construed as limiting the scope.

LIST OF REFERENCE NUMBERS

[0060] 20 A control architecture for a vehicle;
1, 2 Communication network circuits;
3, 4 Control units;
5 Interlink communication line;
6, 7, 8, 9 Commanded units;
10, 11 Communication lines
100 A control method for a control architecture of a vehicle;
110 Connecting a first control unit to a first vehicle communication network;
120 Connecting a second control unit to a second vehicle communication network;
130 Receiving commands by a plurality of commanded units from the first control unit and/or the second control unit over communication lines;
140 Connecting an interlink communication line between the first control unit to the second control unit;
150 transmitting data between the first vehicle communication network and the second control unit through the interlink communication line;
160 transmitting data between the second vehicle communication network and the first control unit through the interlink communication line.