System and method of communication by serial communication bus

• US 20070179631A1
• Filed: 01/19/2007
• Published: 08/02/2007
• Est. Priority Date: 01/27/2006
• Status: Abandoned Application

• Current Assignee: Valeo Systemes Thermiques SAS (Valeo SE)
• Original Assignee: Valeo Systemes Thermiques (Valeo SE)
• Inventors: Moreau, Fabrice, Autran, Frederic
• Application Number:
  US11/655,494
• Publication Number:
  US 20070179631A1
• Time in Patent Office: Days
• US Class Current: 700/1
• CPC Class Codes: G06F 13/4282 on a serial bus, e.g. I2C bus, SPI bus on daisy chain buses G06F13/4247

Abstract

This invention concerns a communication system (100) between at least one device control unit (10) connected to a device (10) to be controlled and at least one human-machine interface (HMI) through a series communication bus (4). This communication system (100) further includes a central processing unit (2) comprising means for:

receiving at least first status information (D32, D3′2) transmitted by human-machine interface (3, 3′) and at least second status information (D12) transmitted by device control unit (1);

processing first status information data (D32, D3′2) and second status information (D12) for generating at least third (D23, D23′) and fourth (D21) status information available for human-machine interface (3, 3′) and device control unit (1);

broadcasting third status information (D23, D23′) to human-machine interface (3, 3′); and

broadcasting fourth status information (D21) to at least one device control unit (1).

Claims

1. System of communication (100) between at least one equipment control module (1) linked to an equipment item (10) and at least one man-machine interface (3, 3′

) by means of a serial communication bus (4), characterized in that it further comprises a central computer (2) comprising means suitable for;

receiving at least first status data items (D32, D3′

2) transmitted via the man-machine interface (3, 3′

) and at least second status data items (D12) transmitted by the equipment control module (1);

processing the first (D32, D3′

2) and second (D12) status data items so as to produce at least third (D23, D23′

) and fourth (D21) status data items respectively intended for the man-machine interface (3, 3′

) and for the equipment control module (1);

broadcasting the third status data items (D23, D23′

) to the man-machine interface (3, 3′

); and

broadcasting the fourth status data items (D21) to the equipment control module (1).

2. System of communication according to claim 1, characterized in that the central computer (2) is placed in a control panel (6) comprising at least one man-machine interface (3).

3. System of communication according to any one of the preceding claims, characterized in that the central computer (2) comprises a storage means (20) with which to store configuration information.

4. System of communication according to any one of the preceding claims, characterized in that the serial communication bus (4) is an LIN (Local Interconnect Network) type bus.

5. System of communication according to claim 4, characterized in that the man-machine interface (3) is of slave type and in that the central computer (2) is of master type.

6. System of communication according to any one of claims 1 to 3, characterized in that the serial communication bus (4) is a CAN (Controller Area Network) type bus.

13. Computer program (PG) comprising code instructions suitable for performing the steps of the communication method according to any one of claims 7 to 12 when the program (PG) is executed on the system of communication according to any one of claims 1 to 6.

7. Method of communication between a central computer (2), at least one equipment control module (1) connected to an equipment item (10), and at least one man-machine interface (3, 3′

), characterized in that said central computer (2) performs the following steps;

reception (E10, E20, E30) of at least first status data items (D32, D3′

2) transmitted via the man-machine interface (3, 3′

) and at least second status data items (D12) transmitted by the equipment control module (1);

processing (E40) of the first status data items (D32, D3′

2) and second status data items (D12), so as to generate at least third status data items (D23, D23′

) and fourth status data items (D21) respectively intended for the man-machine interface (3, 3′

) and the equipment control module (1);

broadcasting (E50) of the third status data items (D23, D23′

) to the man-machine interface (3, 3′

); and

broadcasting (E60) of the fourth status data items (D21) to the equipment control module (1).

8. Method according to claim 7, characterized in that the third status data items (D23, D23′

) and the fourth status data items (D21) are broadcast respectively in at least one frame (T3) and at least one frame (T4).

9. Method according to claim 8, characterized in that the frame (T3) and the frame (T4) form one and the same frame (T5).

10. Method according to any one of claims 7 to 9, characterized in that the central computer (2) broadcasts (E70) generic data items (D) in at least one frame (T) to the man-machine interface (3, 3′

) during said data processing step (E40).

11. Method according to any one of claims 7 to 10, characterized in that the central computer (2) processes the data items (D32, D3′

2) transmitted via the man-machine interface (3, 3′

) according to a priority management algorithm.

12. Method according to any one of claims 7 to 11, characterized in that the steps (E10, E20, E30, E40, E50, E60) of the method are performed periodically.

14. Information storage medium (60) on which is stored a computer program (PG) comprising code instructions suitable for performing the steps of the communication method according to any one of claims 7 to 12.