Actuation of a conveying system

Patent metadata

Field	Value
Publication number	US-9950344-B2
Application number	US-201615286989-A
Country	US
Kind code	B2
Filing date	Oct 6, 2016
Priority date	Oct 9, 2015
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

An apparatus receives data from at least one detection device which regularly detects single items on a sorting surface of a conveying system. Here, a separately actuatable drive element is assigned in each case to a plurality of partial surfaces of the sorting surface. The device regularly determines a region on the sorting surface taken up by the respective single item on the basis of the obtained data by means of triangulations for as long as the single item is situated on the sorting surface. The device determines control commands for actuating the drive elements, which are assigned to a partial surface and correspond to a specific region on the sorting surface taken up by the respective single item, on the basis of a destination at the sorting surface provided for the respective single item. Then, the device actuates the drive elements with the determined control commands.

First claim

The invention claimed is:

1. A method, performed by an apparatus or a system, comprising the following:
receiving data from at least one detection device which regularly detects single items on a sorting surface of a conveying system, wherein a separately actuatable drive element is assigned in each case to a plurality of partial surfaces of the sorting surface,
determining in regular intervals a region on the sorting surface taken up by the respective single item on the basis of positions of a plurality of benchmarks of the single item for as long as the single item is situated on the sorting surface, each benchmark being detected with different angles by the at least one detection device, the position of each benchmark being determined based on the obtained data by means of a triangulation,
determining control commands for actuating the drive elements, which are assigned to a partial surface and correspond to a specific region on the sorting surface taken up by the respective single item, on the basis of a destination at the sorting surface provided for the respective single item and
actuating the drive elements with the determined control commands.

2. The method according to claim 1 , wherein at least one of the following criteria applies:
the sorting surface is configured for simultaneously receiving a plurality of single items as 2D bulk;
the sorting surface is arranged for receiving a plurality of single items as 2D bulk; and
a plurality of single items are supplied to the sorting surface as 2D bulk.

3. The method according to claim 1 , furthermore comprising the following:
determining an identification of the single items which are situated on the sorting surface and
determining the designated destination at the sorting surface for each identified single item on the basis of the identification of the respective single item.

4. The method according to claim 1 , wherein the determination of a region on the sorting surface taken up by a respective single item by means of triangulations on the basis of the obtained data comprises at least one of the following actions for determining benchmark data for the triangulations:
evaluating structure features;
evaluating geometries; and
identifying different materials.

5. The method according to claim 1 , wherein at least one of the following pieces of information is additionally taken into account for determining control commands for actuating the drive elements for a respective single item:
regions on the sorting surface taken up by other single item;
the destinations of other single items at the sorting surface;
an output of at least one sensor; and
an evaluation of a dynamic behavior of the single item in response to preceding actuations of the drive elements for the single item.

6. The method according to claim 1 , wherein the following is additionally taken into account for determining control commands for actuating the drive elements for a respective single item:
a feedback of the drive elements.

7. The method according to claim 1 , wherein the control commands for actuating the drive elements are
respectively only determined for drive elements which are assigned to a partial surface which is comprised by the specific region on the sorting surface taken up by the respective single item, or
respectively only determined for drive elements which are assigned to a partial surface which intersects with the specific region on the sorting surface taken up by the respective single item, or
respectively only determined for drive elements which are assigned to a partial surface which corresponds to, or adjoins, the specific region on the sorting surface taken up by the respective single item, or
respectively only determined for part of a residual path of the single item to the determined destination, at least for the majority of a path of the single item on the sorting surface.

8. The method according to claim 1 , wherein the actuation of the drive elements is an adaptive actuation which is realized by means of
a fuzzy logic or
a neural network or
a fuzzy neural system.

9. The method according to claim 1 , wherein the drive elements comprise the following:
rollers or
balls or
strips of a strip conveyor or
sections of a sectional conveyor or
belts of a belt conveyor.

10. An apparatus comprising at least one memory with program instructions and at least one processor, the program instructions, when executed by the at least one processor, configured to cause the apparatus or a system to perform the following:
receive data from at least one detection device which regularly detects single items on a sorting surface of a conveying system, wherein a separately actuatable drive element is assigned in each case to a plurality of partial surfaces of the sorting surface,
determine in regular intervals a region on the sorting surface taken up by the respective single item on the basis of positions of a plurality of benchmarks of the single item for as long as the single item is situated on the sorting surface, each benchmark being detected with different angles by the at least one detection device, the position of each benchmark being determined based on the obtained data by means of a triangulation,
determine control commands for actuating the drive elements, which are assigned to a partial surface and correspond to a specific region on the sorting surface taken up by the respective single item, on the basis of a destination at the sorting surface provided for the respective single item and
actuate the drive elements with the determined control commands.

11. The apparatus according to claim 10 , wherein at least one of the following criteria applies:
the sorting surface is configured for simultaneously receiving a plurality of single items as 2D bulk,
the sorting surface is arranged for receiving a plurality of single items as 2D bulk, and
a plurality of single items are supplied to the sorting surface as 2D bulk.

12. The apparatus according to claim 10 , wherein the program instructions, when executed by the at least one processor, are furthermore configured to cause the apparatus or the system to:
determine an identification of the single items which are situated on the sorting surface and
determine the designated destination at the sorting surface for each identified single item on the basis of the identification of the respective single item.

13. The apparatus according to claim 10 , wherein the determination of a region on the sorting surface taken up by a respective single item by means of triangulations on the basis of the obtained data comprises at least one of the following actions for determining benchmark data for the triangulations:
evaluating structure features;
evaluating geometries; and
identifying different materials.

14. The apparatus according to claim 10 , wherein at least one of the following pieces of information is additionally taken into account for determining control commands for actuating the drive elements for a respective single item:
regions on the sorting surface taken up by other single items;
the destinations of other single items at the sorting surface;
an output of at least one sensor; and
an evaluation of a dynamic behavior of the single item in response to preceding actuations of the drive elements for the single item.

15. The apparatus according to claim 10 , wherein the following is additionally taken into account for determining control commands for actuating the drive elements for a respective single item:
a feedback of the drive elements.

16. The appar

Assignees

• Hartmann Bernd
• Tzschichholtz Ingo
• Deutsche Post Ag

Inventors

• Hartmann Bernd
• Tzschichholtz Ingo

Classifications

• G06K7/10792

  Special measures in relation to the object to be scanned · CPC title

• B07C1/04

  Forming a stream from a bulk; Controlling the stream, e.g. spacing the articles · CPC title

• G06K7/10861

  sensing of data fields affixed to objects or articles, e.g. coded labels (postal sorting B07C3/14, conveying articles B65G47/48) · CPC title

• B65G47/265

  with one or more load advancing units travelling along the entire length of the accumulation line · CPC title

• B07C3/006 Primary

  Electric or electronic control circuits, e.g. delay lines (delay devices per se H03H7/30, H03H11/26) · CPC title