Failsafe communication system and method

• US 8,983,714 B2
• Filed: 02/22/2013
• Issued: 03/17/2015
• 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
• Primary Examiner(s): Frejd, Russell
• Assistant Examiner(s): HUYNH, LUAT T
• Application Number:
  US13/774,904
• Publication Number:
  US 20140142801A1
• Time in Patent Office: 753 Days
• Field of Search: 701 331- 339, 701 341- 344, 701/32.7
• 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 of a vehicle, 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 conversion of the message from the vehicle bus, the at least one data attribute including at least one of;

(a) a safety critical attribute of a vehicle,

(b) an automotive safety integrity level attribute of a vehicle,

(c) a diagnostic trouble code attribute; and

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

wherein, the data attribute defines communication of the failsafe conditions associated with a device electrically connected to the vehicle bus.

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

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, including a maturation time attribute, 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, including a maturation time attribute, wherein the maturation time attribute indicates a recommend maturation time for data length.

8. The method of claim 1, including a maturation time attribute, 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 database file is a vehicle-specific controller area network database file with a file extension of at least one from the group consisting of .xml, .dbc., and .ncd.

13. The method of claim 1, including a warning indicator attribute, 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 vehicle system for analyzing failsafe conditions, the vehicle 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 conversion of the message from the vehicle bus, the at least one data attribute including at least one of;

(a) an automotive safety integrity level attribute indicating a rating, and

(b) a diagnostic trouble code attribute indicating a recommended diagnostic trouble,

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

output the converted data field for display to a user;

wherein, the data attribute defines communication of the failsafe conditions associated with a device electrically connected to the vehicle bus.

16. A method for analyzing failsafe conditions for an in-vehicle network, the method comprising:

receiving, at a processor, a message transmitted from an electronic control unit over a vehicle bus, the message including a data field;

accessing data attributes from the message, the data attributes included in a database file associated with the vehicle bus including;

(a) channel name,

(b) location and size of a channel,

(c) data type; and

(d) a safety critical attribute.

17. The method of claim 16, the data attributes further comprising (e) an automotive safety integrity level attribute that includes a rating.

18. The method of claim 16, the data attributes further comprising (e) a warning indicator attribute, and (f) a maturation time attribute.

19. The method of claim 16, the data attributes further comprising:

(e) a diagnostic trouble code attribute; and

the method further comprising the step of converting the data field based on the data attributes.

20. The method of claim 16, the data attributes further comprising:

(e) an automotive safety integrity level attribute having a rating,

(f) a warning indicator attribute set as “

Yes”

or “

No”

,

(g) a maturation time attribute,

(h) a diagnostic trouble code attribute, and

the method further comprising the step of converting the data field based on the data attributes, and

wherein the safety critical attribute indicates whether the data field is associated with a comfort feature, a safety feature, or a base feature.