Vehicle communication system having self-configuring optical interfaces

• US 9,780,879 B2
• Filed: 12/09/2015
• Issued: 10/03/2017
• Est. Priority Date: 12/09/2015
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Petrucci, David R., Heiden, David, Massoll, Charles A., Carper, Duane S.
• Primary Examiner(s): Sedighian, M. R.
• Application Number:
  US14/964,043
• Publication Number:
  US 20170170900A1
• Time in Patent Office: 664 Days
• Field of Search: 398 1
• CPC Class Codes: H04B 10/03 Arrangements for fault recovery
• CPC Class Codes: H04B 10/0775 Performance monitoring and measurement of transmission parameters
• CPC Class Codes: H04B 10/0791 Fault location on the transmission path
• CPC Class Codes: H04B 10/25 Arrangements specific to fibre transmission
• CPC Class Codes: H04B 10/27 Arrangements for networking
• CPC Class Codes: H04L 12/00 Data switching networks interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units G06F13/00
• CPC Class Codes: H04L 12/4625 Single bridge functionality, e.g. connection of two networks over a single bridge
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04L 7/0075 with photonic or optical means

Abstract

A vehicle communication system may include a first vehicle node, a second vehicle node, and a fiber optic node connection. The first vehicle node includes an electronic processing unit coupled to a first communication circuit that includes a plurality of self-configuring optical cells. The fiber optic node connection couples the first vehicle node to the second vehicle node using at least some of the self-configuring optical cells. In response to a trigger event, the electronic processing unit is adapted to configure the plurality of self-configuring optical cells to enable communication between the first and second vehicle nodes via the fiber optic node connection.

Claims

1. A vehicle communication system, comprising:

a first vehicle node comprising;

an electronic processing unit; and

a first communication circuit comprising a base and a plurality of self-configuring optical cells carried by the base, each of the plurality of self-configuring optical cells comprises a photo diode coupled to a receiver driver, a transmit driver coupled to a laser diode, and an inverter coupled to one of the receiver driver or the transmit driver, wherein the electronic processing unit is coupled to the first communication circuit;

a second vehicle node; and

a fiber optic node connection coupling the first vehicle node to the second vehicle node via at least some of the plurality of self-configuring optical cells;

wherein, in response to a trigger event, the electronic processing unit is adapted to configure the plurality of self-configuring optical cells to enable communication between the first and second vehicle nodes via the fiber optic node connection.

2. The system of claim 1, wherein each of the plurality of self-configuring optical cells is optically coupled to an optic adapted to direct light to the fiber optic node connection, from the fiber optic node connection, or both.

3. The system of claim 1, wherein the fiber optic node connection comprises a plurality of light pipes, each light pipe comprising a plurality of fiber optic strands.

4. The system of claim 1, wherein the electronic processing unit comprises a memory and a processor, wherein the memory stores instructions executable by the processor for configuring the plurality of self-configuring optical cells to enable communication between the first and second vehicle nodes via the fiber optic node connection, wherein the instructions comprise:

in response to receiving a trigger signal at the first vehicle node, tagging a first self-configuring optical cell at the first communication circuit;

transmitting a clock signal to the second vehicle node via the first self-configuring optical cell;

in response to transmitting the clock signal, receiving a first test signal from the second vehicle node at a second self-configuring optical cell;

in response to receiving the first test signal, tagging the second self-configuring optical cell and a third self-configuring optical cell and transmitting a second test signal to the second vehicle node via the third self-configuring optical cell; and

then

sending vehicle data to the second vehicle node via the third self-configuring optical cell, receiving vehicle data from the second vehicle node via the second self-configuring optical cell, or both,

wherein the plurality of self-configuring optical cells includes the first, second, and third self-configuring optical cells.

5. The system of claim 4, wherein the second vehicle node comprises a second electronic processing unit coupled to a second communication circuit, the second communication circuit comprising a second plurality of self-configuring optical cells, wherein the second electronic processing unit comprises a memory and a processor, wherein the memory of the second electronic processing unit stores instructions executable by the processor for configuring the second plurality of self-configuring optical cells to enable communication between the first and second vehicle nodes via the node connection, wherein the instructions stored on the memory of the second electronic processing unit comprise:

in response to receiving the clock signal at a fourth self-configuring optical cell of the second communication circuit, tagging the fourth self-configuring optical cell and a fifth self-configuring optical cell of the second communication circuit and transmitting the first test signal to the first vehicle node via the fifth self-configuring optical cell;

in response to transmitting the first test signal, receiving from the first vehicle node the second test signal at a sixth self-configuring optical cell of the second communication circuit; and

then

sending the vehicle data to the first vehicle node via the fifth self-configuring optical cell, receiving the vehicle data from the first vehicle node via the sixth self-configuring optical cell, or both,

wherein the second plurality of self-configuring optical cells includes the fourth, fifth, and sixth self-configuring optical cells.

6. The system of claim 1, wherein some of the plurality of self-configuring optical cells are configured to a receive mode and some of the plurality of self-configuring optical cells are configured to a transmit mode, wherein at least one of the plurality of self-configuring optical cells configured in the transmit mode is further configured to transmit a clock signal.

7. The system of claim 1, wherein the electronic processing unit is configured to determine a communication link failure between the first and second vehicle nodes.

8. The system of claim 1, wherein the trigger event occurs at least once per a vehicle ignition cycle.

9. A vehicle communication system, comprising:

a first vehicle node comprising;

an electronic processing unit; and

a first communication circuit comprising a plurality of self-configuring optical cells, wherein the electronic processing unit is coupled to the first communication circuit;

a second vehicle node; and

a fiber optic node connection being located within a same vehicle as the first and second vehicle nodes and coupling the first vehicle node to the second vehicle node via at least some of the plurality of self-configuring optical cells;

wherein, in response to a trigger event, the electronic processing unit is adapted to configure the plurality of self-configuring optical cells to enable communication between the first and second vehicle nodes via the fiber optic node connection, and some of the plurality of self-configuring optical cells are configured to a receive mode and some of the plurality of self-configuring optical cells are configured to a transmit mode, and

wherein the electronic processing unit is adapted to determine a communication link failure between the first and second vehicle nodes, to re-configure the plurality of self-configuring optical cells for communication between the first and second vehicle nodes, and to omit a self-configuring optical cell associated with the communication link failure during the re-configuration.

10. A vehicle communication system, comprising:

a central node manager, comprising;

a first electronic processing unit (EPU);

a first optical interface circuit, comprising a first plurality of optical cells;

a local node, comprising;

a second electronic processing unit (EPU);

a second optical interface circuit, comprising a second plurality of optical cells;

each of the first and second optical interface circuits comprises;

a base;

the first or second plurality of optical cells carried by the base;

wherein each of the optical cells in the first or second plurality of optical cells comprises a photo diode coupled to a receiver driver, a transmit driver coupled to a laser diode, and an inverter coupled to one of the receiver driver or the transmit driver;

a node connection comprising a plurality of light guides is optically coupled to the first and second pluralities of optical cells,

wherein the first and second optical interface circuits are configured by the first and second EPUs once per ignition cycle, and

wherein, for at least some of the optical cells of the first and second pluralities of optical cells, the first and second EPUs are adapted to configure one or more of a transmit (TX) or receive (RX) function, a data type, or an identifying location of the respective optical cell.

11. The system of claim 10, wherein each of the optical cells in the first or second plurality of optical cells is optically coupled to an optic adapted to direct light to the node connection, from the node connection, or both.

12. The system of claim 10, wherein the first EPU comprises a first memory and a first processor, wherein the first memory stores instructions executable by the first processor for configuring the first plurality of optical cells to enable communication between the central node manager and the local node via the node connection, wherein the instructions comprise:

tagging a first optical cell and sending a CLOCK signal to the local node via the first optical cell;

in response to sending the CLOCK signal, receiving a first test signal at a second optical cell;

in response to receiving the first test signal at the second optical cell, tagging the second optical cell and tagging a third optical cell; and

and in response to tagging the third optical cell, sending a second test signal to the local node via the third optical cell,

wherein the first plurality of optical cells includes the first, second, and third optical cells.

13. The method of claim 12, wherein, in the first memory, the first optical cell is associated with CLOCK in TX mode, the second optical cell is associated with a first data type in RX mode, and the third optical cell is associated with a second data type in TX mode.

14. The system of claim 10, wherein the second EPU comprises a second memory and a second processor, wherein the second memory stores instructions executable by the second processor for configuring the second plurality of optical cells to enable communication between the central node manager and the local node via the node connection, wherein the instructions comprise:

in response to receiving a CLOCK signal at a first optical cell, tagging the first optical cell and tagging a second optical cell;

in response to tagging the second optical cell, sending a first test signal to the central node manager via the second optical cell;

in response to sending the first test signal, receiving a second test signal via a third optical cell; and

in response to receiving the second test signal, tagging the third optical cell,

wherein the second plurality of optical cells includes the first, second, and third optical cells.

15. The method of claim 14, wherein, in the second memory, the first optical cell is associated with CLOCK in RX mode, the second optical cell is associated with a first data type in TX mode, and the third optical cell is associated with a second data type in RX mode.

16. A method of configuring a vehicle communication system, comprising the steps of:

prior to transmitting vehicle data over the vehicle communication system, performing the following configuration steps;

tagging a first optical cell at a first interface circuit of a central node manager;

transmitting a first test signal to a second optical cell at a second interface circuit of a local node, wherein the first test signal is transmitted via the first optical cell;

in response to receiving the first test signal at the second optical cell, tagging a third optical cell at the second interface circuit;

transmitting a second test signal to a fourth optical cell at the first interface circuit, wherein the second test signal is transmitted via the third optical cell; and

then

transmitting the vehicle data from the first interface circuit to the second interface circuit by sending the vehicle data using the first and second optical cells or transmitting vehicle data from the second interface circuit to the first interface circuit by sending the vehicle data using the third and fourth optical cells.

17. The method of claim 16, wherein the configuration steps are repeated each vehicle ignition cycle.

18. The method of claim 16, wherein the tagged first and third optical cells are randomly selected by a different electronic processing unit in each of the central node manager and the local node.