AGV Container Positioning Using Predictive Order Likelihoods

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Solution Overview

Problem

Existing storage facility systems are inefficient in organizing inventory items and determining optimal container placement due to reliance on order history, which often results in frequent transportation of containers to and from picking stations, leading to inefficiencies in order fulfillment.

Innovation Solution

A method and system that determine container utilization likelihoods and optimal positions based on order likelihoods, using automated guided vehicles (AGVs) to transport containers to these positions, thereby optimizing storage and fulfillment processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If containers are organized based on order history of item types, then frequently ordered items can be efficiently stored, but the majority of item types with low order frequencies cannot be effectively organized

Engineering Contradiction:
Improveorder fulfillment efficiencyVSAvoidcapability to organize all item types
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The system changes the organizational parameter from historical order frequency to predictive order likelihood. By using machine learning models to predict future order probabilities, the system can effectively organize all item types including those with currently low order frequencies, while still optimizing for efficient fulfillment of predicted high-demand items.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If containers are transported frequently to and from picking stations, then order fulfillment can be maintained, but system efficiency deteriorates

Engineering Contradiction:
Improveorder fulfillment capabilityVSAvoidsystem efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system performs preliminary actions by predicting which containers will be needed and transporting them to picking stations in advance, before actual orders are placed. This proactive approach reduces the frequency of reactive transportation operations while ensuring order fulfillment capability is maintained.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system uses feedback from predictive models that continuously learn from actual order patterns to improve container placement decisions. By monitoring which predictions were accurate and adjusting the model accordingly, the system optimizes container positioning to minimize transportation while maintaining reliable order fulfillment.

Inventive Principle:
Principle #23Feedback

3Productivity

If the system cannot determine optimal timing for releasing customer orders, then containers must be transported frequently, but this increases transportation overhead

Engineering Contradiction:
Improvecontainer transportation frequencyVSAvoidtime spent on unnecessary transportation
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The system releases customer orders in advance based on predictive likelihoods before they are actually needed. By using the predictive model to identify items likely to be ordered, the system can prepare and position containers proactively, avoiding the need for frequent reactive transportation operations.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11593756B2Automated guided vehicle control and organizing inventory items using predictive models for slow item types
Publication Date: 2023.02.28 STAPLES INC
  • US11593756B2 patent drawing
  • US11593756B2 patent drawing
  • US11593756B2 patent drawing

AI summary

In an example embodiment, a method determines a container containing one or more items associated with one or more item types, the container located at a current position in a storage facility; determines one or more order likelihoods of the one or more item types contained in the container; determines a container utilization likelihood of the container based on the one or more order likelihoods of the one or more item types contained in the container; determines an optimal position for the container in the storage facility based on the container utilization likelihood of the container, the optimal position being different from the current position of the container; and instructing an automated guided vehicle (AGV) to transport the container from the current position of the container to the optimal position of the container in the storage facility.