FAILSAFE COMMUNICATION SYSTEM AND METHOD

• US 20140142801A1
• Filed: 02/22/2013
• Published: 05/22/2014
• Est. Priority Date: 11/16/2012
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH, Robert Bosch LLC (Robert Bosch GmbH)
• Original Assignee: Robert Bosch GmbH
• Inventors: Shah, Ankit
• Granted Patent: US 8,983,714 B2
• Time in Patent Office: Days
• US Class Current: 701/32.7
• CPC Class Codes: G01M 17/00 Testing of vehicles testing fluid tightness G01M3/00; testing elastic properties of bodies or chassis, e.g. torsion-testing, G01M5/00; testing alignment of vehicle headlight devices G01M11/06; testing of engines G01M15/00
• CPC Class Codes: G06F 17/00 Digital computing or data processing equipment or methods, specially adapted for specific functions information retrieval, database structures or file system structures therefor G06F16/00
• CPC Class Codes: G07C 5/00 Registering or indicating the working of vehicles
• 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
• CPC Class Codes: H04L 2012/40215 Controller Area Network CAN
• CPC Class Codes: H04L 2012/40273 the transportation system being a vehicle
• CPC Class Codes: H04L 43/065 related to network devices

Abstract

Methods and systems for analyzing failsafe conditions. One method includes receiving, at a processor, a message transmitted over a vehicle bus, wherein the message includes a data field. The method further includes accessing at least one data attribute included in a database file associated with the vehicle bus. The at least one data attribute includes at least one of (a) a safety critical attribute, (b) an automotive safety integrity level attribute, (c) a maturation time attribute, (d) a warning indicator attribute, and (e) a diagnostic trouble code attribute. The method also includes converting the data field based on the at least one data attribute.

Claims

1. A method for analyzing failsafe conditions, the method comprising:

receiving, at a processor, a message transmitted over a vehicle bus, the message including a data field;

accessing at least one data attribute included in a database file associated with the vehicle bus, the at least one data attribute including at least one of;

(a) a safety critical attribute,

(b) an automotive safety integrity level attribute,

(c) a maturation time attribute,

(d) a warning indicator attribute, and

(e) a diagnostic trouble code attribute; and

converting the data field based on the at least one data attribute.

2. The method of claim 1, wherein the safety critical attribute is set to one of “

Yes” and

“

No.”

3. The method of claim 1, wherein the safety critical attribute indicates whether the data field is associated with a comfort feature, a safety feature, or a base feature.

4. The method of claim 1, wherein the automotive safety integrity level attribute indicates a rating selected from the group comprising “

A,”

“

B,”

“

C,” and

“

D.”

5. The method of claim 1, wherein the maturation time attribute indicates a number of time loops.

6. The method of claim 1, wherein the maturation time attribute indicates a recommended maturation time for message or signal timeout.

7. The method of claim 1, wherein the maturation time attribute indicates a recommend maturation time for data length.

8. The method of claim 1, wherein the maturation time attribute indicates a recommend maturation time for invalid behavior.

9. The method of claim 1, wherein the diagnostic trouble code attribute indicates a recommended diagnostic trouble for message or signal time.

10. The method of claim 1, wherein the diagnostic trouble code attribute indicates a recommend diagnostic trouble for data length.

11. The method of claim 1, wherein the diagnostic trouble code attribute indicates a recommend diagnostic trouble for invalid behavior.

12. The method of claim 1, wherein the warning indicator attribute is set to one of “

Yes” and

“

No.”

13. The method of claim 1, wherein the warning indicator attribute specifies whether the data field indicates activation of a human-machine interface.

14. The method of claim 1, wherein the data field includes a failsafe signal from an electronic control unit connected to the bus.

15. A system for analyzing failsafe conditions, the system comprising:

a processor configured to

receive a message transmitted over a vehicle bus, the message including a data field,

access at least one data attribute included in a database file associated with the vehicle bus, the at least one data attribute including at least one of;

(a) a safety critical attribute,

(b) an automotive safety integrity level attribute,

(c) a maturation time attribute,

(d) a warning indicator attribute, and

(e) a diagnostic trouble code attribute,

convert the data field based on the at least one data attribute; and

output the converted data field for display to a user.