Conveyor Sortation System Using Masked Payload Identifiers
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Solution Overview
Problem
In modern warehouse environments, existing sorting systems face challenges in efficiently transferring packages to mobile drive units while maintaining proprietary information security, as the systems lack effective communication protocols to ensure timely and accurate payload delivery without revealing sensitive destination information.
Innovation Solution
The proposed solution involves a sortation system where the conveyor system detects the speed and position of mobile drive units using sensors, allowing for synchronized payload transfer without revealing local destinations or customer information, and uses payload identifiers masked from the conveyor system to determine delivery routes, ensuring secure communication and efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the conveyor system uses sensors to detect speed and position of mobile drive units for synchronized payload transfer, then transfer accuracy and throughput are improved, but system complexity and communication requirements increase
Solution Approach 1:
The system divides information handling into segments: the conveyor system only receives masked payload identifiers without destination information, while the mobile drive unit controller retains knowledge of local destinations and customer information. This segmentation allows the conveyor to operate with simplified communication protocols while maintaining high transfer accuracy through sensor-based speed and position detection.
Solution Approach 2:
The patent introduces an intermediary communication layer where payload identifiers are masked to remove sensitive destination information before being transmitted to the conveyor system. The mobile drive unit controller acts as an intermediary that processes unmasked destination data and generates the masked identifiers for conveyor communication, enabling synchronized transfer without exposing proprietary information.
2Loss of information
If the conveyor system is masked from local destinations and customer information, then proprietary information security is improved, but coordination and synchronization capability deteriorates
Solution Approach 1:
The system creates a simplified copy of payload information that excludes sensitive destination details. The conveyor system operates with this masked copy of payload identifiers, which contains sufficient information for transfer coordination (payload identification and timing) without revealing proprietary destination information. The mobile drive unit controller maintains the complete unmasked information for accurate destination coordination.
3Loss of information
If mobile drive units operate autonomously with destination knowledge hidden from conveyor system, then information security is improved, but transfer synchronization difficulty increases
Solution Approach 1:
The mobile drive unit controller continuously monitors its own speed and position and provides feedback to the conveyor controller through masked payload identifiers. The conveyor system uses sensor feedback to detect the mobile drive unit's speed and position, and adjusts payload release timing based on this feedback. This closed-loop feedback mechanism enables accurate synchronization without the conveyor system needing knowledge of destination information.
Data Source
AI summary
In one embodiment, a sortation system at a facility has a conveyor system and a mobile drive unit system. The conveyor system has a conveyor surface that transfers payloads to the mobile drive units, and a controller that communicates a payload identifier for each payload to the mobile drive unit system. The payload identifiers are masked such that information about the local destinations are unknown to the conveyor system. The mobile drive unit system determines the local destinations from the payload identifiers by unmasking the payload identifiers, and delivers the payloads to determined local destinations at the facility.