Shelf Scheduling for Balanced AGV Picking Workstations

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Solution Overview

Problem

In flow-based picking systems, uneven task distribution among picking staffs leads to reduced picking density and efficiency due to variations in picking speed and unexpected interruptions, resulting in backlog and decreased delivery efficiency.

Innovation Solution

A method and apparatus that detect item quantities and task receipt times on shelves, determining a scheduling condition based on these factors to transport shelves to sorting workstations, optimizing picking density and efficiency through an item-to-staff picking mode using AGVs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If flow-based picking is implemented to improve picking density, then picking efficiency is improved, but uneven task distribution among picking staffs occurs due to differences in picking speed and interruptions

Engineering Contradiction:
Improvepicking efficiencyVSAvoidtask distribution balance
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The system dynamically adjusts picking paths and task assignments in real-time based on monitoring data of picking staff performance. The control device receives monitoring data indicating picking speeds and interruption status, then dynamically generates optimized picking paths that adapt to current staff conditions, resolving the contradiction between maintaining high picking efficiency and ensuring balanced task distribution.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system implements a feedback mechanism where monitoring data on picking staff performance is continuously collected and used to adjust task distribution. The control device receives feedback on picking speeds and interruptions, then recalculates and redistributes picking tasks to maintain balance, allowing the system to self-correct uneven task distribution while preserving overall picking efficiency.

Inventive Principle:
Principle #23Feedback

2Productivity

If picking paths are optimized for individual staff members, then picking density improves, but alternating picking paths occur leading to backlog issues

Engineering Contradiction:
Improvepicking densityVSAvoidpicking path consistency
Core Design Contradiction:
ProductivityVSStability of the object's composition

Solution Approach 1:

The system merges individual optimized picking paths into a coordinated whole by the control device, which synthesizes monitoring data from multiple staff members to generate harmonized picking paths. This ensures that while each staff member follows an optimized path for their specific conditions, the overall system maintains path consistency and avoids alternating patterns that cause backlogs, thereby preserving both high picking density and path stability.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS12626222B2Method and apparatus for processing logistics order task, electronic device, and computer medium
Publication Date: 2026.05.12 BEIJING JINGDONG ZHENSHI INFORMATION TECH CO LTD
  • US12626222B2 patent drawing
  • US12626222B2 patent drawing
  • US12626222B2 patent drawing

AI summary

Provided is a method and an apparatus for processing a logistics order task, an electronic device, and a computer medium. The method for processing the logistics order task includes: detecting a quantity of an item on a shelf, the item being associated with a positioning task having been received; determining a time for receiving the positioning task; determining, based on the quantity of the item and/or the time for receiving the positioning task, whether the shelf meets a scheduling condition; and transporting the shelf that meets the scheduling condition to a sorting workstation directed by the positioning task.