Methodss for performing non-contact based determination of the position of an implement

Patent metadata

Field	Value
Publication number	US-9650763-B2
Application number	US-201615210811-A
Country	US
Kind code	B2
Filing date	Jul 14, 2016
Priority date	Nov 27, 1998
Publication date	May 16, 2017
Grant date	May 16, 2017

Abstract

Embodiments of the present invention are directed to systems for performing non-contact based determination of the position of an implement. In one embodiment, a non-contact based measurement system is used to determine the relative position of an implement coupled with a mobile machine. The geographic position of the mobile machine is determined and the geographic position of said implement based upon the geographic position of the mobile machine and the position of the implement relative to the mobile machine.

First claim

What is claimed is:

1. A method for performing non-contact based determination of the position of an implement comprising:
using a non-contact based measurement system to determine a first measurement comprising the position of said implement relative to a mobile machine coupled with said implement and an angle between the implement and a particular part of said mobile machine, wherein said implement includes an emitter coupled thereto and said mobile machine includes a detector coupled thereto, and determining said first measurement includes emitting a one-way transmission of light from said emitter that travels without changing direction, receiving said one-way transmission of light at said detector to determine said angle, and using said angle to determine said position of said implement relative to said mobile machine;
using a position determining apparatus to determine a second measurement comprising the geographic position of said mobile machine; and
using a control system to determine the geographic position of said implement using said first measurement and said second measurement.

2. The method as recited in claim 1 wherein said mobile machine is selected from the group consisting of a bulldozer, a motor grader, an excavator, a skid-steer loader, a scraper, a trencher, a trimmer, a tractor with an attachment, a paver, and a slip form concrete machine.

3. The method as recited in claim 1 wherein said determining said second measurement comprises:
utilizing a terrestrial-based position determining system to determine said second measurement.

4. The method as recited in claim 1 wherein said determining said second measurement comprises:
utilizing a satellite-based position determining system to determine said second measurement.

5. The method as recited in claim 1 wherein said determining said second measurement further comprises:
utilizing a system that combines a terrestrial-based position determining system with a satellite-based position determining system to determine said second measurement.

6. The method as recited in claim 1 wherein said position determining apparatus is located proximate to said mobile machine to determine said second measurement.

7. The method as recited in claim 1 wherein determining said first measurement comprises:
utilizing an image recognition apparatus to determine said first measurement.

8. The method as recited in claim 7 wherein said image recognition apparatus determines a location of a visual indicator proximate to said implement.

9. The method as recited in claim 1 wherein determining said first measurement comprises:
utilizing a light-based measurement apparatus to determine said first measurement.

10. The method as recited in claim 9 wherein determining said first measurement further comprises:
generating said one-way transmission of light in the visible spectrum; and
determining said first measurement by measuring a phase-shift of said one-way transmission of light or determining a time-of-flight of said one-way transmission of light between said emitter and said detector.

11. The method as recited in claim 9 wherein determining said first measurement further comprises:
generating said one-way transmission of light in the non-visible spectrum; and
determining said first measurement by measuring a phase-shift of said one-way transmission of light or determining a time-of-flight of said one-way transmission of light between said emitter and said detector.

12. The method as recited in claim 1 wherein determining said first measurement comprises:
utilizing a sound-based measurement apparatus to determine said first measurement.

13. The method as recited in claim 1 wherein determining said first measurement comprises:
determining a difference in said angle between said implement and said particular part of said mobile machine when said implement is moved from a first position to a second position.

14. The method as recited in claim 1 wherein determining said first measurement comprises:
determining a difference in a distance between said implement and said mobile machine when said implement is moved from a first position to a second position.

15. The method as recited in claim 1 wherein determining said second measurement further comprises:
determining an orientation of said mobile machine.

Assignees

• Caterpillar Trimble Control Tech Llc

Inventors

• Taylor Arthur James
• Nichols Mark
• Jackson Philip

Classifications

• G05D2201/0202

  Physics · mapped topic

• E02F3/7636

  Graders with the scraper blade mounted under the tractor chassis · CPC title

• E02F3/7609

  Scraper blade mounted forwardly of the tractor on a pair of pivoting arms which are linked to the sides of the tractor, e.g. bulldozers · CPC title

• G01S19/10

  providing dedicated supplementary positioning signals · CPC title

• E02F3/847

  using electromagnetic, optical or acoustic beams to determine the blade position, e.g. laser beams · CPC title