Control system for automated singulation system

Patent metadata

Field	Value
Publication number	US-11772906-B2
Application number	US-202117543307-A
Country	US
Kind code	B2
Filing date	Dec 6, 2021
Priority date	Dec 13, 2018
Publication date	Oct 3, 2023
Grant date	Oct 3, 2023

Abstract

A control system for an automated singulation system is provided. The control system detects a presence of a first item on a first conveyor and detects a presence of a second item on a second conveyor while the first item is present on the first conveyor. The second conveyor transfers items onto the first conveyor and is at a lower height than the second conveyor. The first conveyor is oriented perpendicularly with respect to the second conveyor. In response to detecting the presence of the second item, a location of the first item along a length of the first conveyor is determined. The first conveyor and the second conveyor are controlled based at least on the location of the first item.

First claim

What is claimed is:

1. A system, comprising:
an apparatus comprising a plurality of conveyors arranged at successively decreasing heights, wherein (i) a first conveyor of the plurality of conveyors is configured to transfer items onto a second conveyor of the plurality of conveyors and (ii) the first conveyor is oriented perpendicularly with respect to the second conveyor; and
a controller configured to:
detect a presence of a first item on the first conveyor while a second item is present on the second conveyor;
in response to detecting the presence of the first item, determine a position of the second item on the second conveyor;
determine whether the position of the second item is within a predefined region on the second conveyor, wherein the predefined region starts from an end of the second conveyor that is adjacent to the first conveyor;
determine that the position of the second item is within a minimum gap distance from the predefined region; and
control the first conveyor and the second conveyor based at least in part on the position of the second item on the second conveyor.

2. The system of claim 1 , wherein:
the second conveyor is configured to transfer the items onto a third conveyor of the plurality of conveyors; and
the second conveyor is oriented perpendicularly with respect to the third conveyor.

3. The system of claim 2 , wherein the controller is further configured to:
detect a presence of the second item on the second conveyor while a third item is present on the third conveyor;
in response to detecting the presence of the second item, determine a position of the third item on the third conveyor; and
control the second conveyor and the third conveyor based at least in part on the position of the third item on the third conveyor.

4. The system of claim 1 , wherein the controller is configured to control the first conveyor and the second conveyor by at least one of (i) running the first conveyor or (ii) running the second conveyor, when the controller determines that the position of the second item is outside of the predefined region on the second conveyor.

5. The system of claim 1 , wherein the controller is configured to control the first conveyor and the second conveyor by (i) stopping the first conveyor and (ii) running the second conveyor, when the controller determines that the position of the second item is within the predefined region on the second conveyor.

6. The system of claim 1 , wherein the controller is configured to control the first conveyor and the second conveyor by increasing a speed of the first conveyor relative to a speed of the second conveyor, when the controller determines that the position of the second item is outside of the predefined region on the second conveyor.

7. The system of claim 1 , wherein the predefined region extends for a distance along a length of the second conveyor.

8. The system of claim 7 , wherein the distance along the length of the second conveyor is equal to a width of the first conveyor.

9. A computer-implemented method comprising:
detecting a presence of a first item on a first conveyor of a plurality of conveyors while a second item is present on a second conveyor of a plurality of conveyors, wherein (i) the plurality of conveyors are arranged at successively decreasing heights, (ii) the first conveyor is configured to transfer items onto the second conveyor and (iii) the first conveyor is oriented perpendicularly with respect to the second conveyor;
in response to detecting the presence of the first item, determining a position of the second item on the second conveyor;
determining whether the position of the second item is within a predefined region on the second conveyor, wherein the predefined region starts from an end of the second conveyor that is adjacent to the first conveyor;
determining that the position of the second item is within a minimum gap distance from the predefined region; and
controlling the first conveyor and the second conveyor based at least in part on the position of the second item on the second conveyor.

10. The computer-implemented method of claim 9 , further comprising:
detecting a presence of the second item on the second conveyor while a third item is present on a third conveyor of the plurality of conveyors, wherein (i) the second conveyor is configured to transfer the items onto the third conveyor and (ii) the second conveyor is oriented perpendicularly with respect to the third conveyor;
in response to detecting the presence of the second item, determining a position of the third item on the third conveyor; and
controlling the second conveyor and the third conveyor based at least in part on the position of the third item on the third conveyor.

11. The computer-implemented method of claim 9 , wherein controlling the first conveyor and the second conveyor comprises at least one of (i) running the first conveyor or (ii) running the second conveyor, when the position of the second item is outside of the predefined region on the second conveyor.

12. The computer-implemented method of claim 9 , wherein controlling the first conveyor and the second conveyor comprises (i) stopping the first conveyor and (ii) running the second conveyor, when the position of the second item is within the predefined region on the second conveyor.

13. The computer-implemented method of claim 9 , wherein controlling the first conveyor and the second conveyor comprises increasing a speed of the first conveyor relative to a speed of the second conveyor, when the position of the second item is outside of the predefined region on the second conveyor.

14. The computer-implemented method of claim 9 , wherein the predefined region extends for a distance along a length of the second conveyor.

15. The computer-implemented method of claim 14 , wherein the distance along the length of the second conveyor is equal to a width of the first conveyor.

16. A non-transitory computer-readable medium storing instructions executable to perform an operation comprising:
detecting a presence of a first item on a first conveyor of a plurality of conveyors while a second item is present on a second conveyor of a plurality of conveyors, wherein (i) the plurality of conveyors are arranged at successively decreasing heights, (ii) the first conveyor is configured to transfer items onto the second conveyor and (iii) the first conveyor is oriented perpendicularly with respect to the second conveyor;
in response to detecting the presence of the first item, determining a position of the second item on the second conveyor;
determining whether the position of the second item is within a predefined region on the second conveyor, wherein the predefined region starts from an end of the second conveyor that is adjacent to the first conveyor;
determining that the position of the second item is within a minimum gap distance from the predefined region; and
controlling the first conveyor and the second conveyor based at least in part on the position of the second item on the second conveyor.

17. The non-transitory computer-readable medium of claim 16 , wherein controlling the first conveyor and the second conveyor comprises (i) stopping the first conveyor and (ii) running the second conveyor, when the position of the second item is within the predefined region on the second conveyor.

Assignees

• Amazon Tech Inc

Inventors

• Zhao Longyu
• Quach Tri Minh
• Wang Xujie
• Seaton Canaan
• Eaton Joseph

Classifications

• B65G47/31 Primary

  by varying the relative speeds of the conveyors forming the series · CPC title

• B65G15/24

  in tandem · CPC title

• B65G47/268

  by means of belt or chain conveyor · CPC title

• B65G47/295

  by means of at least two stopping elements · CPC title

• B65G2201/025

  Boxes · CPC title