IP Library › Granted Patent US 12,270,639
Granted Patent B2
US 12,270,639 · App. 17/241,653 · Granted Apr 8, 2025

Non-contact vehicle orientation and alignment sensor and method

Inventors: Frank J. Bretl (Corvallis, OR); David L. Frederic (Lebanon, OR); Patrick C. Pointer (Corvallis, OR); Mark A. Trevisiol (Albany, OR); Ben Wahlstrom (Austin, TX)
Assignee: BPG Sales and Technology Investments, LLC
G01B11/2755G01B11/2513G01B2210/14G01B2210/26G01B2210/286
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Quick Facts
Patent No.
US 12,270,639
App. No.
17/241,653
Granted
Apr 8, 2025
Kind
B2
Abstract

A non-contact sensor for determining orientation of an object, such as a tire and wheel assembly of a vehicle, includes a projector assembly having a light emitter, a lens assembly and a mask, with the mask including mask apertures and the light emitter configured to project light through the lens assembly and mask apertures and onto the object, and with the mask apertures creating a light pattern of projected light onto the object. The sensor also includes an imager configured to image reflections of the light pattern from the object, and a processor. The projector assembly and imager are angled with respect to one another, and the processor is configured to process imaged reflections of the light pattern to derive the orientation of the object, such as the alignment orientation of the tire and wheel assembly.

Claims (36)

1. A non-contact sensor for determining orientation of an object, said non- contact sensor comprising:

a projector assembly, said projector assembly including a light emitter, a lens assembly and a mask, said mask including mask apertures with said light emitter configured to project light through said lens assembly and said mask apertures and onto an object with said mask apertures creating a light pattern of projected light onto the object;

an imager, said imager configured to image reflections of said light pattern from the object; and

a processor;

wherein said projector assembly and said imager are angled with respect to one another, and wherein said processor is configured to process imaged reflections of said light pattern to derive the orientation of the object;

wherein said lens assembly comprises an internal lens and an outer lens, and wherein said mask is disposed between said internal lens and said outer lens, and wherein said projector assembly comprises a projector housing having a threaded bore within which said internal lens is fixed, and wherein said outer lens comprises a focus lens having a threaded end engaged with said threaded bore.

2. The non-contact sensor of claim 1 , wherein said light emitter comprises an LED light emitter.

3. The non-contact sensor of claim 1 , wherein said lens assembly comprises a pair of adjacently disposed lenses positioned between said light emitter and said mask.

4. The non-contact sensor of claim 3 , wherein said pair of adjacently disposed lenses comprise a first hemispherical lens and a second hemispherical lens.

5. The non-contact sensor of claim 3 , wherein said lens assembly further comprises a focus lens, and wherein said focus lens is spaced from said mask whereby light projected through said mask is projected through said focus lens and onto the object.

6. The non-contact sensor of claim 1 , wherein said light pattern includes a visual identifier and wherein said visual identifier is operable by said processor to discern the identity and location of said light pattern when projected on the object.

7. The non-contact sensor of claim 6 , wherein said visual identifier comprises a gap between a pair of parallel illumination lines generated by said light pattern on the object.

8. The non-contact sensor of claim 1 , wherein said mask apertures comprise a plurality of slits whereby said light pattern of projected light forms illumination lines on the object.

9. The non-contact sensor of claim 8 , wherein at least two of said slits are spaced closer to each other than other of said slits.

10. The non-contact sensor of claim 1 , wherein said processor comprises a plurality of processors, and wherein a first one of said processors is configured to process images of said light pattern reflected from the object, and wherein a second one of said processors is configured to derive the orientation of the object.

11. The non-contact sensor of claim 1 , wherein said imager is positioned vertically higher than said projector assembly, and wherein said imager is downwardly oriented to view at a downward angle.

12. The non-contact sensor of claim 1 , further comprising a sensor housing, wherein said projector assembly and said imager are mounted within said sensor housing, and wherein said imager is located in a fixed and known position relative to said projector assembly.

13. A non-contact sensor for determining orientation of a tire and wheel assembly of a vehicle, said non-contact sensor comprising:

a sensor housing, said sensor housing retaining a projector assembly and an imager;

said projector assembly including a light emitter, a lens assembly and a mask, said mask including mask apertures with said light emitter configured to project light through said lens assembly and said mask apertures and onto the tire and wheel assembly with said mask apertures creating a light pattern of projected light onto the object;

said imager configured to image reflections of said light pattern from the tire and wheel assembly;

wherein said projector assembly and said imager are angled with respect to one another when retained by said sensor housing whereby said imager images reflections of said light pattern at an angle relative to the projection of said light pattern, and wherein a processor is configured to process imaged reflections of said light pattern to derive the orientation of the object;

wherein said lens assembly comprises an internal lens and an outer lens, and wherein said mask is disposed between said internal lens and said outer lens, and wherein said projector assembly comprises a projector housing having a threaded bore within which said internal lens is fixed, and wherein said outer lens comprises a focus lens having a threaded end engaged with said threaded bore.

14. The non-contact sensor of claim 13 , wherein said light emitter comprises an LED light emitter.

15. The non-contact sensor of claim 13 , wherein said lens assembly comprises a pair of adjacently disposed lenses positioned between said light emitter and said mask, wherein light is projected by said light emitter at a first one of said pair of lenses and passes through said first one of said pair of lenses and through a second one of said pair of lenses, and wherein light passing through said second one of said pair of lenses passes through said mask.

16. The non-contact sensor of claim 15 , wherein said lens assembly further comprises a focus lens, and wherein said focus lens is spaced from said mask whereby light projected through said mask is projected through said focus lens and onto the tire and wheel assembly.

17. The non-contact sensor of claim 13 , wherein said light pattern includes a visual identifier and wherein said visual identifier is operable by said processor to discern the identity and location of said light pattern when projected on the tire and wheel assembly.

18. A non-contact sensor system for determining orientation of a tire and wheel assembly of a vehicle, said non-contact sensor system comprising:

a pair of non-contact sensors with one of said non-contact sensors positioned on either side of a tire and wheel assembly of a vehicle, and wherein each said non-contact sensor comprises;

a projector assembly, said projector assembly including a light emitter, a lens assembly and a mask, said mask including mask apertures with said light emitter configured to project light through said lens assembly and said mask apertures and onto a portion of the tire and wheel assembly with said mask apertures creating a light pattern of projected light onto the portion of the tire and wheel assembly, wherein said lens assembly comprises an internal lens and an outer lens, and wherein said mask is disposed between said internal lens and said outer lens, and wherein said projector assembly comprises a projector housing having a threaded bore within which said internal lens is fixed, and wherein said outer lens comprises a focus lens having a threaded end engaged with said threaded bore;

an imager, said imager configured to image reflections of said light pattern from the portion of the tire and wheel assembly; and

a sensor processor;

wherein said projector assembly and said imager are angled with respect to one another, and wherein said sensor processor is configured to process imaged reflections of said light pattern to derive geometric orientation information of the portion of the tire and wheel assembly;

said non-contact sensor system further comprising a central processor, and wherein said central processor receives the geometric orientation information from both said non-contact sensors, with said central processor configured to derive the orientation of the tire and wheel assembly.

19. The non-contact sensor system of claim 18 , wherein said system further comprises at least one more pair of said non-contact wheel sensors positioned on either side of at least another tire and wheel assembly of the vehicle.

20. The non-contact sensor system of claim 19 , wherein said system comprises four pairs of said non-contact wheel sensors positioned on either side of all four tire and wheel assemblies of the vehicle.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 27, 2021
From: BRETL, FRANK J.; FREDERIC, DAVID L.; POINTER, PATRICK C.; TREVISIOL, MARK A.; WAHLSTROM, BEN
To: BPG SALES AND TECHNOLOGY INVESTMENTS, LLC
Reel/Frame 056056/0476 →
Continuity (2)
Provisional Application 63016064 · Apr 27, 2020
Related Publication 20210333097A1 · Oct 28, 2021
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