Robot Cart Latching for Flexible Warehouse Reconfiguration

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Solution Overview

Problem

Automated robotic systems in warehouses face challenges with scalability and inefficiencies due to fixed configurations, leading to difficulties in reconfiguring systems for moving bins and carts, and often humans can perform tasks more quickly, resulting in misallocation of assignments and reduced throughput.

Innovation Solution

A robotic device with a latch fastening system that can removably engage with carts, allowing for flexible movement and reconfiguration within the warehouse environment, combined with a control center that optimizes assignments based on performance metrics of humans and robots to enhance efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If automated robotic systems are designed for complete automation with fixed configuration, then automation extent is improved, but adaptability deteriorates

Engineering Contradiction:
Improveautomation extentVSAvoidadaptability
Core Design Contradiction:
Extent of automationVSAdaptability or versatility

Solution Approach 1:

The robotic system transitions from fixed configuration to dynamic reconfigurability through mobile robots that can autonomously navigate, attach to, and detach from carts. The system adapts its configuration by dynamically assigning robots to different carts based on real-time performance metrics and task requirements, enabling the warehouse operation to flex between automated and manual modes.

Inventive Principle:
Principle #15Dynamics

2Device complexity

If fixed configuration is used in automated systems, then device complexity is reduced, but ease of operation deteriorates

Engineering Contradiction:
Improvedevice complexityVSAvoidease of operation
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The robotic system performs self-management through autonomous navigation, self-attachment to carts, and dynamic task allocation based on performance metrics. The control system automatically monitors robot and cart status, assigns tasks optimally, and reconfigures the system without human intervention, making the complex reconfiguration process self-service rather than operator-dependent.

Inventive Principle:
Principle #25Self-service

3Productivity

If robots are assigned to move carts, then productivity is improved, but adaptability deteriorates when humans can perform tasks more quickly

Engineering Contradiction:
ImproveproductivityVSAvoidadaptability
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The system dynamically allocates cart-moving tasks between robots and humans based on real-time performance metrics. When robots demonstrate superior speed and efficiency, they are assigned more tasks; when humans perform better, the system adapts by assigning those tasks to human workers. This dynamic allocation optimizes productivity while maintaining adaptability to varying performance conditions.

Inventive Principle:
Principle #15Dynamics

4Extent of automation

If complete automation is implemented, then extent of automation is improved, but loss of time deteriorates due to reconfiguration difficulties

Engineering Contradiction:
Improveextent of automationVSAvoidreconfiguration time
Core Design Contradiction:
Extent of automationVSLoss of time

Solution Approach 1:

The system performs preliminary actions by pre-positioning mobile robots in the warehouse and maintaining them in standby mode with attachment capabilities. When carts need to be moved, robots are already in place and can quickly attach to carts without requiring system shutdown or physical reconfiguration. This preliminary preparation eliminates reconfiguration downtime and maintains continuous automated operation.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11790295B1System and method of moving carts using a robot
Publication Date: 2023.10.17 VECNA ROBOTICS INC
  • US11790295B1 patent drawing
  • US11790295B1 patent drawing
  • US11790295B1 patent drawing

AI summary

A method includes receiving, at a robot being in communication with a control center communication module of a control center, an instruction to relocate a cart to a location where a set of items are stored. The method further includes moving, by the robot, to a second location where the cart is positioned; (2) activating, by the robot, a motor of a latch fastening system to cause movement of a latch arm resulting in a latch being exposed; (3) removably engaging, by the robot and using the latch, the cart via a latching feature of the cart; (4) moving, by the robot, the cart from the second location to the location where the set of items are stored; and (5) transitioning, by the robot, a subset of the set of items to the cart in accordance with the instruction.