Carrier-Item Association Detection Using Spatial Attributes
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Solution Overview
Problem
Detecting correlated motion between items and vehicles in facilities is time-consuming, leading to vehicles being idle or traveling to incorrect locations due to the delay in providing directional guidance.
Innovation Solution
A system that uses location data from RFID tags to generate attributes defining the spatial relationship between items and carriers, which are then classified to rapidly detect association states, enabling timely and accurate directional guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If correlated motion detection is used to identify item-carrier associations, then measurement accuracy is improved, but loss of time increases
Solution Approach 1:
The system pre-calculates and stores spatial relationship attributes (distance, velocity, acceleration) between items and carriers before association detection is needed. When detection is required, these pre-computed attributes are immediately available for the classifier to determine association states, eliminating the time-consuming correlated motion analysis while maintaining accuracy.
2Productivity
If real-time directional guidance is provided to carriers, then productivity is improved, but device complexity increases
Solution Approach 1:
The system introduces a classifier as an intermediary component that processes spatial relationship attributes and outputs association states. This classifier acts as a mediator between the complex spatial data collection system and the simple directional guidance output, enabling real-time decisions without requiring complex real-time correlated motion analysis throughout the entire system.
Data Source
AI summary
A method includes: obtaining, at a computing device, respective location data corresponding to a carrier and each of a set of items; for each item in the set of items: storing a previous association state between the item and the carrier; generating a set of attributes defining a spatial relationship between the item and the carrier; providing the set of attributes to a classifier to detect a current association state between the carrier and the item; and responsive to determining that the current association state between the carrier and the item is different from the previous association state, transmitting a status update message to a dispatcher configured to provide directional guidance to the carrier.