System and method for tire inspection

Patent metadata

Field	Value
Publication number	US-10209205-B2
Application number	US-201415307868-A
Country	US
Kind code	B2
Filing date	Apr 29, 2014
Priority date	Apr 29, 2014
Publication date	Feb 19, 2019
Grant date	Feb 19, 2019

Abstract

Among other things, a tire inspection system and method are provided. A radiation source and a detector array are configured to rotate about an axis of rotation. During a first examination of a tire, the tire has a first orientation relative to the axis of rotation, and during a second examination, the tire has a second orientation relative to the axis of rotation. For example, between the first examination and the second examination, the tire is at least one of shifted with respect to the axis of rotation or rotated about a tire rotation axis (e.g., perpendicular to the axis of rotation) to change the orientation of the tire relative to the axis of rotation. In this manner, imagery of the tire may be developed, which can be inspected to identify irregularities, etc., in the tire, for example.

First claim

What is claimed is:

1. A tire inspection system, comprising:
a computed tomography (CT) apparatus configured to examine a tire, comprising:
a radiation source configured to emit radiation;
a detector array configured to detect at least some of the radiation; and
a rotating gantry configured to rotate about an axis of rotation, the radiation source and the detector array mounted to the rotating gantry and defining an examination region through which the tire translated;

a tire translator configured to translate the tire through the examination region during at least two instances; and
a tire mover configured to reorient the tire relative to the axis of rotation between a first instance of the at least two instances and a second instance of the at least two instances;
wherein the tire inspection system is configured:
to recognize a feature of the tire responsive to an examination of the tire associated with the first instance, and
configure at least one of a position, an orientation, a path, or a speed of at least one element of the tire inspection system based on the feature.

2. The tire inspection system of claim 1 , wherein the tire mover is configured to reorient the tire by shifting the tire in a direction perpendicular to the axis of rotation.

3. The tire inspection system of claim 1 , wherein the tire mover is configured to reorient the tire by rotating the tire about a tire rotation axis perpendicular to the axis of rotation.

4. The tire inspection system of claim 1 , wherein the computed tomography apparatus is configured to perform a helical scan of the tire to examine the tire.

5. The tire inspection system of claim 1 , wherein the tire translator is configured to translate the tire in a direction parallel to the axis of rotation.

6. The tire inspection system of claim 1 , wherein the tire translator is configured to translate the tire in a first direction during the first instance and to translate the tire in a second direction during the second instance, the second direction different than the first direction.

7. The tire inspection system of claim 1 , further comprising a controller configured to:
define a translation speed of the tire translator based upon the feature of the tire; or
define a rotational speed of the rotating gantry based upon the feature of the tire.

8. The tire inspection system of claim 1 , further comprising a controller configured to define a helical pitch of the tire inspection system based upon the feature of the tire.

9. The tire inspection system of claim 1 , wherein the detector array comprises:
a first set of detector cells having a first cell characteristic, and
a second set of detector cells having a second cell characteristic different than the first cell characteristic.

10. The tire inspection system of claim 9 , wherein the first set of detector cells is situated proximate a center of the detector array and the second set of detector cells is situated proximate a perimeter of the detector array.

11. The tire inspection system of claim 1 , wherein the operation of the tire translator is configured to translate the tire at a first speed when a feature of a first portion of the tire is recognized shadowing a specified region of the detector array and to translate the tire at a second speed, different than the first speed, when a feature of a second portion of the tire is recognized shadowing the specified region.

12. The tire inspection system of claim 1 , wherein the operation of the radiation source is configured to emit the radiation at a first flux rate when a feature of a first portion of the tire is recognized shadowing a specified region of the detector array and to emit the radiation at a second flux rate, different than the first flux rate, when a feature of a second portion of the tire is recognized shadowing the specified region.

13. The tire inspection system of claim 1 , further comprising a feature identification component configured to identify a specified feature of the tire based upon image data yielded from the detector array.

14. A method for examining a tire, comprising:
detecting a feature of a tire and adjusting a position, an orientation, a path, or a speed of a conveyance system based on the characteristic;
performing a first examination of the tire while maintaining the tire in a first orientation relative to an axis of rotation, the first examination comprising:
rotating a radiation source and a detector array about the axis of rotation, a relative orientation between the radiation source and the detector array substantially fixed during the rotating; and
translating the tire in a first direction;

acquiring first image data of the tire responsive to the performing the first examination;
changing an orientation of the tire from the first orientation to a second orientation,
performing a second examination of the tire while maintaining the tire in the second orientation relative to an axis of rotation, the second examination comprising at least one of translating the tire in the first direction or translating the tire in a second direction; and
acquiring second image data of the tire responsive to the performing a second examination.

15. The method of claim 14 , wherein the changing comprises rotating the tire about a tire rotation axis perpendicular to the axis of rotation.

16. The method of claim 14 , wherein the changing comprises shifting the tire in a direction perpendicular to the axis of rotation.

17. The method of claim 14 , further comprising analyzing at least one of the first image data or the second image data to detect a defect in the tire.

18. The method of claim 14 , wherein the first direction is substantially parallel to the axis of rotation.

19. A non-transitory computer-readable medium comprising processor-executable instructions that when executed are configured to enable a computer processor to perform operations, the operations comprising:
detecting a characteristic of a tire and adjusting a position, an orientation, a path, or a speed of an examination unit based on the characteristic;
performing a first examination of the tire while maintaining the tire in a first orientation relative to an axis of rotation, the first examination comprising:
rotating a radiation source and a detector array about the axis of rotation, a relative orientation between the radiation source and the detector array substantially fixed during the rotating; and
translating the tire in a first direction;

acquiring first image data of the tire responsive to the performing a first examination;
changing an orientation of the tire from the first orientation to a second orientation,
performing a second examination of the tire while maintaining the tire in the second orientation relative to an axis of rotation, the second examination comprising at least one of translating the tire in the first direction or translating the tire in a second direction; and
acquiring second image data of the tire responsive to the performing a second examination.

20. The non-transitory computer-readable medium of claim 19 , wherein the operations comprise combining at least a first portion of the first image data with a second portion of the second image data.

21. The tire inspection system of claim 1 , wherein the tire mover is configured to reorient the tire relative to the axis of rotation during a time period at least partially between the first instance and the second instance.

22. The tire inspectio

Assignees

• Analogic Corp

Inventors

• Shaughnessy Charles H
• Urchuk Steven N
• Karbeyaz Basak Ulker

Classifications

• G01N2223/3304

  helicoidal scan · CPC title

• G01N2223/646

  flaws, defects · CPC title

• G01M17/028

  using X-rays · CPC title

• G01N2223/627

  tyres · CPC title

• G01N2223/643

  object on conveyor · CPC title