Warehouse Vehicle Navigation Using Visual Location Labels
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Solution Overview
Problem
Current navigation systems for lift trucks in warehouse environments are expensive, unreliable, and require significant reconfiguration with changes in aisle layouts, making it difficult to accurately and autonomously navigate within the warehouse while minimizing operator effort.
Innovation Solution
A navigation system that uses an imaging device to capture images of location labels on storage racks, with a navigation processor determining the lift truck's location and autonomously guiding it to the next item, allowing the operator to walk alongside the truck and reducing the need for frequent entry and exit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional navigation systems are used for lift trucks, then navigation capability is provided, but the system becomes expensive and requires significant reconfiguration when aisle layouts change
Solution Approach 1:
The patent uses visual labels placed on storage racks that contain location information (aisle and slot numbers). The imaging device captures images of these labels, and the navigation processor extracts location data from them. This copying approach replaces complex traditional navigation systems with simple visual markers that can be easily updated by changing labels rather than reprogramming the entire system when aisle layouts change.
Solution Approach 2:
The patent replaces mechanical/optical navigation systems (such as laser scanners, RFID readers, or complex sensor arrays) with a vision-based system using standard imaging devices. The navigation processor uses image processing algorithms to extract location information from visual labels, substituting complex mechanical navigation hardware with a more adaptable software-based image recognition approach.
2Productivity
If voice-directed systems are used to guide operators, then communication efficiency is improved, but operator time is lost due to frequent entry and exit from the lift truck
Solution Approach 1:
The patent implements autonomous navigation capability where the lift truck automatically guides itself to the correct locations based on images of visual labels captured by the imaging device. The navigation processor determines the truck's current location and autonomously navigates to the next destination without requiring the operator to continuously monitor and manually control the truck, allowing the operator to remain seated and perform picking tasks more efficiently.
3Ease of operation
If autonomous navigation is implemented, then operator effort is reduced, but the system becomes more complex and expensive
Solution Approach 1:
The patent uses simple visual labels containing location information that can be captured by standard imaging devices. Instead of implementing complex autonomous navigation systems with multiple sensors and sophisticated algorithms, the system copies location data from these visual labels, making the autonomous navigation capability affordable and easier to implement while still reducing operator effort.
Data Source
AI summary
A system and method for the operation and navigation of a moving vehicle in a warehouse environment includes a controller for controlling operation of the vehicle and an imaging device configured to capture an image representing a view from the vehicle. Location labels are configured for being positioned in the warehouse environment and include location indicia.A navigation processor is operatively coupled to the imaging device and configured to determine a location of the vehicle based at least in part on the image of the location label, the navigation processor further coupled with the controller to control the movement of the vehicle based on the determined location.