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Intelligent control system for current distribution in a vehicle

Imported: 23 Feb '17 | Published: 22 Oct '02

Jorma Pohjola

USPTO - Utility Patents

Abstract

The invention relates to an intelligent control system for current distribution in a vehicle. The current distribution and communication transmission are handled by a central unit which is divided into structurally discrete junction modules (

2), each of which connects to its own cable branch (

4). Each junction module controls independently the power supply and communication transmission for the cable branch (

4) attached thereto. The central unit is further provided with elements for the transmission and reception of communication between the junction modules (

2). The intelligence required for the load-specific operating control is decentralized to connecting sockets (

3) present in the cable branches (

4).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will now be described in more detail by way of an exemplary embodiment with reference made to the accompanying drawings, in which

FIG. 1A shows a general block diagram for the physical implementation of a system of the invention;

FIG. 1B shows another version of the system of FIG. 1A, depicting alternative arrangements for supplying control messages by means of input-connectors (

27;

28;

29;

30) attachable to various parts of the system.

FIG. 2 shows a block diagram for a junction module

2 included in the system of FIG. 1;

FIG. 3 shows a block diagram for an intelligent connecting socket

3 included in the system of FIG. 1;

FIG. 4 shows a communication chart for the system of FIG. 1;

FIG. 5 shows an operating chart (software block-diagram) contained in the junction module

2 included in the chart of FIG. 4;

FIG. 6 shows a central unit assembly consisting of modules;

FIG. 7 shows a block diagram for an alternative embodiment of a central unit; and

FIG. 8 shows schematically a software configuration and a passage of messages in the connecting socket

3.

Claims

1. An intelligent control system for current distribution in a vehicle, said system comprising:

2. A system as set forth in claim 1, characterized in that each junction module (

2) includes elements (

2

i,

2

lb,

2

lh;

18) for the reception and transmission of the communication, so-called low-level communication, of the cable branch (

4/

17), and that the central unit is further provided with elements (

2

th,

2

tb,

2

t;

9;

2

r,

2

rb,

2

rh) for the transmission and reception of the communication, so-called high-level communication, between the junction modules (

2).

3. A system as set forth in claim 2, characterized in that the high-level communication elements include a ring bus (

9) which the junction modules (

2) are linked with.

4. A system as set forth in claim 1, characterized in that the communication busses (

4/

17) in each cable branch are connected via said second terminals (

9

a) of the central unit with an adapter and monitoring block (

10), which includes a detail memory and which controls an information display (

11) for the operator, and that the adapter and monitoring block (

10) also takes care of matching the communications in other, exterior buses.

5. A system as set forth in claim 1, characterized in that each junction module (

2) has information about all messages (

2

oc) required by the functions of a cable branch (

4) attached thereto and, each junction module (

2) transmits into its own cable branch only those messages that are necessary there.

6. A system as set forth in claim 4, characterized in that each junction module (

2) supplies the communication bus with monitor messages (watch-dog signal) and, in the absence of such a message, the adapter and monitoring block (

10) informs the display of the identifier of a faulty junction module.

7. A system as set forth in claim 1, characterized in that each junction module (

2) is provided with a switch (

18

s,

34) to by-pass the communication bus (

17) of a cable branch (

4) connected with the discussed junction module (

2,

2′).

8. A system as set forth in claim 1, characterized in that the system further includes an input connector (

26) to be coupled with the connecting socket (

3) and provided with control elements (

8) for controlling actuators (

7), and that the connecting socket (

3) is provided with a processor (

23) for reading the condition or mode of the control elements (

8) associated with the input connector (

26) and supplies the communication bus (

17) of the cable branch (

4) with a message about a change in the condition or mode of the control elements (

8), and that the junction module (

2) receives this message and another junction module (

2) transmits it to the communication bus (

17) of another cable branch (

4).

9. A system as set forth in claim 1, characterized in that the processor (

23) of each connecting socket (

3) listens to the communication bus (

17) and picks up therefrom the messages identified thereby as intended for itself.

10. A system as set forth in claim 1, characterized in that the system further includes output connectors (

5) to be coupled with the connecting sockets (

3) and to which the connectors of the actuators (

7) are coupled by way of current conductors (

6).

11. A system as set forth in claim 1, characterized in that the central unit is further provided with an input module (

28) for input of control messages to the communication bus.

12. A system as set forth in claim 1, characterized in that the junction module (

2) is fitted with an input terminal (

30) for input of control messages to the communication bus.

13. A system as set forth in claim 1, characterized in that a separate input terminal (

27) for control messages is connected directly to the communication bus (

17) of the cable (

4).

14. A system as set forth in claim 1, characterized in that the junction modules (

2) are provided with engagement lugs (

31) which are dimensioned to leave cooling gaps (

32) between the coupled junction modules.

15. A system as set forth in claim 1, characterized in that the central unit (

2,

2) only takes care of power supply and communication transmission of the cable branches (

4), and that the intelligence required for the individual control of various functions of the connecting sockets (

3) is decentralized to the connecting sockets (

3) and stored in individual behave programs present in a memory (

24) of each connecting socket (

3).

16. An intelligent control system for current distribution in a vehicle, said system comprising: