Method for assisting during execution of a sequence of cuttings in a tree, and system for assisting during execution of a sequence of cuttings in a tree

Patent metadata

Field	Value
Publication number	US-11730093-B2
Application number	US-202017133913-A
Country	US
Kind code	B2
Filing date	Dec 24, 2020
Priority date	Jul 4, 2017
Publication date	Aug 22, 2023
Grant date	Aug 22, 2023

Abstract

A system assists during execution of a sequence of cuttings in a tree, wherein, during a cutting sequence, a first cut in the tree is followed by a second cut in the tree At least a part of an ideal course of the second cut depends on at least a part of a course of the first cut. An identification device identifies at least the part of the course of the first cut in the tree. A precalculation device precalculates at least the part of the ideal course of the second cut in the tree based on the identified part of the course of the first cut. An output device outputs cutting information for executing the second cut based on the precalculated part of the ideal course of the second cut.

First claim

What is claimed is:

1. A system for assisting during execution of a sequence of cuttings in a tree, wherein, during the cutting sequence, a first cut in the tree is followed by a second cut in the tree, wherein at least a part of an ideal course of the second cut depends on at least a part of a course of the first cut, the system comprising:
an identification device configured to identify at least the part of the course of the first cut in the tree;
a precalculation device programmed to perform the function of:
precalculating at least the part of the ideal course of the second cut in the tree based on the identified part of the course of the first cut; and

an output device configured to output cutting information for executing the second cut based on the precalculated part of the ideal course of the second cut.

2. The system according to claim 1 , further comprising:
a cutting apparatus configured to execute at least one of the first cut or the second cut.

3. The system according to claim 2 , wherein
the cutting apparatus includes a saw.

4. The system according to claim 1 , wherein
the identification device comprises:
at least one of a camera, an inertial measuring unit, a spirit level, a compass, a local position determination device, or a satellite position determination device.

5. The system according to claim 1 , wherein
the output device includes at least one of a display, a sound generator, or a vibration device.

6. The system according to claim 1 , wherein
the output device is disposed on a protective helmet, a face shield, ear protection, safety goggles, a protective glove, a smartwatch, an armband, a wristband, or a bracelet.

7. The system according to claim 1 , wherein
the identification device comprises:
a stereo camera.

8. The system according to claim 1 , wherein
the identification device comprises:
a time-of-flight 3D camera.

9. The system of claim 1 , wherein
the cutting information comprises an instruction superimposed or projected into a field of view of a user.

10. The system of claim 1 , wherein the output device is further configured to:
project the cutting information onto the tree.

11. The system of claim 1 , wherein the identification device is further configured to:
identify position coordinates and/or orientation angles of the first cut in the tree.

12. The system of claim 1 , wherein the identification device is further configured to:
identify a geometric property of the tree, in particular a diameter of the tree, wherein the part of the ideal course of the second cut is precalculated as a function of
the identified geometric property, in particular diameter, of the tree.

13. The system of claim 1 , wherein the precalculation device is further programmed to perform the function of:
precalculating the part of the ideal course of the second cut in terms of a horizontal offset and a vertical offset from the part of the course of the first cut in the tree.

14. The system of claim 1 , wherein the precalculation device is further programmed to perform the function of:
receiving a selection from a user that indicates a type of the first cut in the tree, wherein
the precalculation of the part of the ideal course of the second cut is further based on the selection.

Assignees

• Stihl Ag & Co Kg Andreas

Inventors

• Eppinger Andreas
• Eppinger Florian
• Frey Benjamin
• Hollmeier Friedrich
• Jaeger Dirk
• Kraemer Fernandez Antonio
• Kugel Steffen
• Mang Harald
• Maier Bettina
• Reinert Michael
• Suepple Steffen
• Tippelt Martin

Classifications

• A01G23/00 Primary

  Forestry · CPC title

• A01G23/08

  Felling trees · CPC title

• A01G23/099 Primary

  Auxiliary devices, e.g. felling wedges · CPC title

• A01G3/086

  Chain saws · CPC title

• B23D59/002

  for the position of the saw blade (mounting for swiveling or tilting a circular saw blade B27B5/36; portable power-driven circular saws with adjustment for cutting depth or amount of tilting B27B9/02) · CPC title