EXTENDED SMART DIAGNOSTIC CLEAT

• US 20140018999A1
• Filed: 03/21/2012
• Published: 01/16/2014
• Est. Priority Date: 03/21/2011
• Status: Abandoned Application

• Current Assignee: Purdue Research Foundation (Purdue University)
• Original Assignee: Purdue Research Foundation (Purdue University)
• Inventors: Adams, Douglas E., Di Petta, Tiffany Lynn, Koester, David J.
• Application Number:
  US14/006,040
• Publication Number:
  US 20140018999A1
• Time in Patent Office: Days
• US Class Current: 701/31.4
• CPC Class Codes: B60W 40/06 Road conditions
• CPC Class Codes: B60W 50/02 Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
• CPC Class Codes: G01M 17/04 Suspension or damping

Abstract

Methods and apparatus for diagnosing the condition of a vehicle. Some embodiments include providing an input to a vehicle suspension similar to an impact, and then measuring the response of the vehicle as it drives over an instrumented member. The motion of the instrumented member is recorded and corrected, and in some embodiments a fault index is calculated. The fault index can be displayed to a user to indicate a maintenance condition of the vehicles, such as a worn or broken component.

Claims

1. An apparatus for analyzing a vehicle, comprising:

a first separable segment of driving surface, said first segment having a top surface adapted and configured to be driven on by a wheeled vehicle, said first segment having a cross-sectional shape adapted and configured to locally elevate a vehicle driven over said first segment;

a second separable segment of driving surface, said second segment having a top surface adapted and configured to be driven on by a wheeled vehicle, said second segment being located proximate to said first segment;

a motion sensor providing a signal corresponding to motion of said second segment; and

a computer receiving the signal and having software that analyzes the signal.

2. The apparatus of claim 1 wherein said second segment is supported from the roadway by resilient material.

5. The apparatus of claim 1 which further comprises means for isolating said second segment from the roadway.

6. The apparatus of claim 1 wherein said second segment is not attached to the roadway.

8. The apparatus of claim 1 wherein said second segment has a length, and the length is less than the wheelbase of the vehicle.

9. The apparatus of claim 1 wherein said first segment has a bottom side adapted and configured to be placed on the surface of a roadway.

10. The apparatus of claim 1 wherein the motion sensor is attached to said second segment.

12. The apparatus of claim 1 wherein said first segment is sufficiently flexible to generally conform to the surface of the roadway.

3-4. -4. (canceled)

7. (canceled)

11. (canceled)

13. A method for analyzing a vehicle on a roadway, comprising the acts of:

providing a separable segment of driving surface located proximate to a local elevational change in the roadway, and a sensor providing a signal corresponding to the spatial response of the segment,

driving the vehicle first over the elevational change at a vehicle velocity sufficient to cause vehicle response in at least one of pitching motion or rolling motion;

driving the responding vehicle over the segment;

recording the signal during said driving over the segment; and

correcting the recorded signal for one of the response of the vehicle or the response of the segment.

14. The method of claim 13 wherein the pitching or rolling response of the vehicle is below a frequency, and said correcting is by removing frequency content of the signal below the frequency.

15. The method of claim 13 wherein the segment responds in a vibratory mode above a frequency, and said correcting is by removing frequency content of the signal above the frequency.

17. The method of claim 13 wherein the vehicle response is a fundamental mode of rigid body motion.

20. The method of claim 13 wherein said correcting is of the response of the vehicle and which further comprises preparing a fault index from the corrected signal.

23. The method of claim 13 which further comprises calculating a velocity of the vehicle driving over the segment from the signal, and said correcting based on the velocity over the segment.

27. The method of claim 13 which further comprises analyzing the corrected signal and recommending maintenance to the vehicle from said analyzing.

28. The method of claim 13 which further comprises not attaching the segment to the roadway.

29. The method of claim 13 which further comprises supporting the segment on the road with a resilient material.

31. The method of claim 13 wherein the elevational change is a rise in the level of the roadway and the portable segment is substantially flat.

16. (canceled)

18-19. -19. (canceled)

21-22. -22. (canceled)

24-26. -26. (canceled)

30. (canceled)

32-34. -34. (canceled)

35. An apparatus for analyzing a wheeled vehicle having a wheelbase and a front track, comprising:

a first panel having a substantially flat top surface adapted and configured to be driven on by the vehicle, said first panel having a width less than the front track and a length less than the wheelbase;

a second panel having a substantially flat top surface adapted and configured to be driven on by the vehicle, said second panel having a width less than the front track and a length less than the wheelbase;

a first motion sensor attached to said first panel and providing a signal corresponding to motion of said first panel; and

a second motion sensor attached to said second panel and providing a signal corresponding to motion of said second panel;

36. The apparatus of claim 35 wherein said first panel and said second panel are placed side by side on a roadway with a gap between the interior edges of said first and second panels.

37. The apparatus of claim 35 wherein the length of said first panel is greater than the circumference of a tire of the vehicle.

38. The apparatus of claim 35 wherein said first panel has an edge, and said first sensor is placed proximate to the edge of said first panel, and said second panel has an edge, and said second sensor is placed proximate to the edge of said second panel.

42. The apparatus of claim 35 which further comprises a first isolating member adapted and configured to be placed between said first panel and a roadway.

39-41. -41. (canceled)

43-51. -51. (canceled)

52. A system for analyzing a wheeled vehicle having a wheel track, comprising:

a right panel having a top surface adapted and configured to be driven on by the right side of the vehicle, said right panel having a width less than the wheel track;

a left panel having a top surface adapted and configured to be driven on by the left side of the vehicle, said left panel having a width less than the wheel track, said left panel being located on a roadway adjacent to and spaced apart from said right panel;

a right motion sensor providing a signal corresponding to motion of said right panel; and

a left motion sensor providing a signal corresponding to motion of said left panel;

a computer receiving the right motion signal and the left motion signal and having software that determines a condition of a side of the vehicle;

a display driven by said computer and having a graphical user interface showing the side of a vehicle and providing information about the condition.

53. The system of claim 52 wherein the side that is shown includes a graphical depiction of the condition.

54-55. -55. (canceled)