Fault Diagnosis Data Recording System and Method

• US 20080208533A1
• Filed: 01/12/2006
• Published: 08/28/2008
• Est. Priority Date: 01/19/2005
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Yokogawa, Nobuhiro
• Granted Patent: US 7,711,461 B2
• Time in Patent Office: Days
• US Class Current: 702/183
• CPC Class Codes: G06F 11/0739 in a data processing system embedded in automotive or aircraft systems
• CPC Class Codes: G06F 11/0748 in a remote unit communicating with a single-box computer node experiencing an error/fault remote testing G06F11/2294
• CPC Class Codes: G06F 11/0787 Storage of error reports, e.g. persistent data storage, storage using memory protection
• CPC Class Codes: G07C 2205/02 using a vehicle scan tool
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C
• CPC Class Codes: G07C 5/085 using electronic data carriers

Abstract

In a fault diagnosis data recording system including a plurality of nodes interconnected by a multiplex communication line, a first node is provided to perform fault detection of the first node, and a second node connected to the first node via the multiplex communication line is provided to have a storage unit. The first node and the second node are configured to store at least a part of result data of the fault detection performed by the first node, into the storage unit of the second node.

Claims

1. A fault diagnosis data recording system including a plurality of nodes interconnected by a multiplex communication line, comprising:

a first node which performs fault detection of the first node; and

a second node connected to the first node via the multiplex communication line and having a storage unit,

wherein the first node and the second node are configured to store at least a part of result data of the fault detection performed by the first node, into the storage unit of the second node.

2. The fault diagnosis data recording system according to claim 1 wherein identification information of the first node is associated with the result data of the fault detection performed by the first node, and the identification information is further stored in the storage unit.

3. The fault diagnosis data recording system according to claim 1 wherein each of the plurality of nodes is configured to receive a request from an external diagnostic device connected to the multiplex communication line, and transmit to the external diagnostic device the result data stored in a storage unit of that node, in response to the received request.

4. A fault diagnosis data recording system comprising:

a plurality of nodes interconnected by a multiplex communication line;

each node performing a fault detection of the node; and

each node configured to store at least a part of result data of the fault detection performed by the self node, into a storage unit of one of the plurality of nodes other than the self node.

5. The fault diagnosis data recording system according to claim 4 wherein identification information of the self node is associated with the result data of the fault detection performed by the self node, and the identification information is further stored in the storage unit.

6. The fault diagnosis data recording system according to claim 4 wherein said one of the plurality of nodes other than the self node is set up beforehand in correspondence with the self node.

7. The fault diagnosis data recording system according to claim 4 wherein the self node is configured to transmit the result data from the self node to said one of the plurality of nodes through the multiplex communication line, and said one of the plurality of nodes other than the self node is configured to receive the result data through the multiplex communication line and store the received result data into the storage unit.

8. The fault diagnosis data recording system according to claim 4 wherein the self node is configured to transmit the result data from the self node to two or more other nodes of the plurality of nodes through the multiplex communication line, and

wherein each of said other nodes of the plurality of nodes is configured to receive the result data through the multiplex communication line and temporarily store the received result data into a storage unit of that node, respectively, and

wherein each of said other nodes is configured to perform, after the temporary storage, arbitration of the temporarily stored result data according to a predetermined rule, so that one of said other nodes which is chosen by the arbitration finally stores the temporarily stored result data in the storage unit.

9. The fault diagnosis data recording system according to claim 8 wherein the remaining nodes of said other nodes which are not chosen by the arbitration are configured to erase the result data temporarily stored in the storage unit respectively.

10. The fault diagnosis data recording system according to claim 4 wherein each of the plurality of nodes is configured to receive a request from an external diagnostic device connected to the multiplex communication line, and transmit to the external diagnostic device the result data stored in a storage unit of that node, in response to the received request.

11. A fault diagnosis data recording method which records diagnosis data in a plurality of nodes interconnected by a multiplex communication line, comprising the steps of:

providing a first node which performs fault detection of the first node;

providing a second node connected to the first node via the multiplex communication line and having a storage unit; and

storing at least a part of result data of the fault detection performed by the first node, into the storage unit of the second node.

12. A fault diagnosis data recording method comprising the steps of:

providing a plurality of nodes interconnected by a multiplex communication line;

performing, at each of the plurality of nodes, a fault detection of the self node; and

storing, at each of the plurality of nodes, at least a part of result data of the fault detection performed by the self node, into a storage unit of one of the plurality of nodes other than the self node.