Automated analysis of vehicle diagnostic data stream to identify anomaly

• US 20060030981A1
• Filed: 07/22/2004
• Published: 02/09/2006
• Est. Priority Date: 07/22/2004
• Status: Abandoned Application

• Current Assignee: Snap-On Incorporated
• Original Assignee: Snap-On Incorporated
• Inventors: Robb, Michael J., Davis, Neil A., Cancilla, James J.
• Application Number:
  US10/895,825
• Publication Number:
  US 20060030981A1
• Time in Patent Office: Days
• US Class Current: 701/29
• CPC Class Codes: G05B 23/0229 knowledge based, e.g. expert systems; genetic algorithms
• CPC Class Codes: G07C 5/0816 Indicating performance data, e.g. occurrence of a malfunction

Abstract

A vehicle diagnostic system comprising a rules storage system configured to store one or more rules, each of which determines whether the vehicle may have an anomaly when applied to vehicle diagnostic information. An operator interface may be configured to alert an operator of the diagnostic system to a suspected anomaly in the vehicle. A processing system may be configured to receive diagnostic information from the vehicle, apply one or more rules in the rules storage system to the diagnostic information, and cause the operator interface to alert the operator to a suspected anomaly in the vehicle if the application of the one or more rules results in a determination that the vehicle may have that anomaly. Variations and related processes are also disclosed.

Claims

1. A vehicle diagnostic system comprising:

a rules storage system configured to store one or more rules, each of which determines whether a vehicle may have an anomaly when applied to vehicle diagnostic information;

an operator interface configured to alert an operator of the diagnostic system to a suspected anomaly in the vehicle; and

a processing system configured to;

receive diagnostic information from the vehicle;

apply one or more rules in the rules storage system to the diagnostic information; and

cause the operator interface to alert the operator to a suspected anomaly in the vehicle if application of the one or more rules results in a determination that the vehicle may have that anomaly.

2. The vehicle diagnostic system of claim 1 wherein the processing system is configured to deliver a plurality of different types of test requests to the vehicle, each one of which causes a different type of diagnostic information to be sent by the vehicle to the diagnostic system.

3. The vehicle diagnostic system of claim 2 wherein:

the rules storage system is configured to store a relationship between each rule and the type of diagnostic information to which the rule applies; and

the processing system is configured to;

consult the relationships in the rules storage system for the purpose of identifying the rule or rules that should be applied to a particular type of diagnostic information; and

to only apply the identified rule or rules to that information.

4. The vehicle diagnostic system of claim 2 further including a test sets storage system configured to store a plurality test sets, each test set designating a plurality of test requests that are to be sent to the vehicle in response to a single request for the test requests designated by that that test set.

5. The vehicle diagnostic system of claim 4 wherein:

the test sets storage system is configured to store a relationship between each test set and a description of the test set that the operator may select for the purpose of initiating the test set; and

the processing system is configured to;

present a plurality of the descriptions of the test sets to the operator; and

to implement the test set selected by the operator.

6. The vehicle diagnostic system of claim 4 wherein the processing system is configured to:

receive diagnostic information from the vehicle in response to each test request in the selected test set;

apply one or more rules in the rules storage system to the diagnostic information provided in response to each test request in the selected test set; and

cause the operator interface to alert the operator to each suspected anomaly in the vehicle that application of the one or more rules determine that the vehicle may have.

7. The vehicle diagnostic system of claim 1 further including a vehicle interface configured to:

receive the diagnostic information from the vehicle in the form of a data stream; and

deliver the diagnostic information to the processing system.

8. The vehicle diagnostic system of claim 7 wherein the vehicle interface is configured to receive a data stream in compliance with the OBD II data stream specification.

9. The vehicle diagnostic system of claim 1 wherein the operator interface includes a display.

10. The vehicle diagnostic system of claim 9 wherein the operator interface is configured to:

display at least portions of the diagnostic information; and

alert the operator to a suspected anomaly in the vehicle by giving emphasis to a displayed portion of the diagnostic information that is indicative of the suspected anomaly.

11. The vehicle diagnostic system of claim 1 wherein the operator interface is configured to alert an operator by providing a description of the suspected anomaly.

12. The vehicle diagnostic system of claim 1 wherein the operator interface is configured to alert an operator by suggesting one or more additional tests to run.

13. The vehicle diagnostic system of claim 1 wherein the rules storage system contains rules that are not created by the operator of the vehicle diagnostic system.

14. The vehicle diagnostic system of claim 13 wherein the rules storage system contains rules that are created by the manufacturer of the vehicle diagnostic system.

15. The vehicle diagnostic system of claim 1 wherein the rules storage system is configured to store rules that test for an out-of-bound condition.

16. The vehicle diagnostic system of claim 1 wherein the rules storage system is configured to store rules that test for a glitch.

17. The vehicle diagnostic system of claim 1 wherein the rules storage system is configured to store rules that test for a step function.

18. The vehicle diagnostic system of claim 1 wherein the rules storage system is configured to store rules that test for a matching pattern.

19. The vehicle diagnostic system of claim 1 wherein the rules storage system is configured to store rules that test for a logical combination of other rules.

20. A vehicle diagnostic system comprising:

a test sets storage system configured to store a plurality test sets, each test set designating a plurality of test requests that are to be sent to a vehicle in response to a single request for the test requests designated by that that test set, each test request causing a different type of diagnostic information to be sent by the vehicle to the diagnostic system; and

a processing system configured to;

receive an identification of a selected test set in the test sets storage system;

obtain from the test sets storage system the plurality of test requests designated by the selected test set;

send the plurality of test requests designated by the selected test set to the vehicle; and

receive diagnostic information from the vehicle in response to each communicated test request.

21. A vehicle diagnostic process comprising:

sending a test request to a vehicle;

receiving diagnostic information from the vehicle in response to the test request;

applying one or more rules to the diagnostic information, each rule configured to determine whether the vehicle may have an anomaly; and

alerting a technician to a suspected anomaly in the vehicle if the application of one or more rules to the diagnostic information determines that the vehicle may have that anomaly.

22. The vehicle diagnostic process of claim 21 further including:

consulting relationships between rules and types of diagnostic information; and

applying only the rule or rules to the diagnostic information that have matching relationships to the type of the diagnostic information.

23. The vehicle diagnostic process of claim 21 further comprising:

sending a plurality of test requests to the vehicle in response to a technician'"'"'s selection of a set of tests to run from a plurality of test sets;

receiving diagnostic information from the vehicle in response to each test request;

applying one or more rules to each received diagnostic information, each rule configured to determine whether the vehicle may have an anomaly; and

alerting a technician to a suspected anomaly in the vehicle if the application of one or more rules to any of the diagnostic information determines that the vehicle may have that anomaly.

24. The vehicle diagnostic process of claim 21 wherein the alerting includes giving emphasis to a portion of the diagnostic information that is indicative of the anomaly.

25. The vehicle diagnostic process of claim 21 wherein the alerting includes providing a description of the anomaly.

26. The vehicle diagnostic process of claim 21 wherein the alerting includes suggesting one or more additional test to run.

27. The vehicle diagnostic process of claim 21 wherein one or more of the applied rules tests for an out-of bound condition.

28. The vehicle diagnostic process of claim 21 wherein one or more of the applied rules tests for a glitch.

29. The vehicle diagnostic process of claim 21 wherein one or more of the applied rules tests for a step function.

30. The vehicle diagnostic process of claim 21 wherein one or more of the applied rules tests for a matching pattern.

31. The vehicle diagnostic process of claim 21 wherein one or more of the applied rules tests for a logical combination of other rules.

32. A vehicle diagnostic process comprising:

selecting a set of tests to run from a list of test sets;

obtaining the selected set of tests to run from a test sets storage system;

sending a test request for each test in the selected set of tests to a vehicle; and

receiving diagnostic information in response to each test request from the vehicle.