User-Specific Information Propagation in Materials Handling
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Solution Overview
Problem
In materials handling facilities, existing systems face challenges in efficiently presenting user-specific information to users as they move through the facility, leading to delays and inefficiencies in information delivery and management.
Innovation Solution
A system that determines a user's location and provides user-specific information to output device controllers, allowing for pre-caching, rendering, and presentation of information on displays, while also managing retention and expiration of this information based on time-to-live (TTL) timers, ensuring seamless transition across multiple displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If user-specific information is provided to multiple output device controllers in a materials handling facility, then the information can be presented to users as they move through the facility, but the system complexity increases due to managing multiple controllers and information propagation
Solution Approach 1:
The system divides the facility into multiple zones, each controlled by a separate output device controller. Each controller independently manages information presentation for its designated zone, reducing the complexity of centralized control while enabling seamless information delivery as users move through different areas.
Solution Approach 2:
User-specific information is propagated to output device controllers in advance of when it will be needed, based on predicted user movement patterns. This preliminary action ensures information is ready for immediate presentation when users arrive at specific locations, improving responsiveness without requiring real-time complex coordination.
2Duration of action of moving object
If information is retained in output device controllers for extended periods, then users can receive information at any location, but memory resources are consumed and outdated information may be presented
Solution Approach 1:
The system implements time-to-live (TTL) timers that periodically expire information in output device controller memories. This periodic cleanup mechanism ensures that only recently relevant information is retained, freeing memory resources while preventing presentation of outdated information. The TTL duration is optimized to balance information availability with resource consumption.
3Stability of the object's composition
If user-specific information is propagated to all neighboring output device controllers, then seamless transition is achieved, but network bandwidth and processing time are consumed
Solution Approach 1:
The system propagates user-specific information only to output device controllers within a localized neighborhood of the user's current position, rather than to all controllers in the facility. This local propagation approach maintains information consistency in relevant areas while significantly reducing network bandwidth consumption and propagation time compared to global distribution.
4Measurement precision
If the system monitors user location continuously to provide accurate information, then user-specific information delivery is improved, but energy consumption and processing load increase
Solution Approach 1:
The system performs periodic user location updates at optimized intervals rather than continuous monitoring. This periodic measurement approach maintains sufficient location accuracy for effective information delivery while significantly reducing energy consumption and processing load associated with continuous tracking.
Data Source
AI summary
Described is a system and method for propagating, synchronizing and expiring user specific information among multiple output devices. In some implementations, retention information is provided along with the user specific information and the output device and/or output device controller will determine when to expire the user specific information based on the retention information. In other implementations, the output device controller and/or output device may periodically request updates from other output devices, output device controllers and/or the inventory management system to determine whether to expire user specific information.