Shelf Pusher Position Sensing for Real-Time Inventory Tracking
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Solution Overview
Problem
Retail stores face challenges in inventory management, including manual labor-intensive inventory counting, product theft detection, and inefficient in-store promotions, as well as maintaining optimal inventory levels due to lack of real-time shelf status updates.
Innovation Solution
A system using a pusher assembly with a rear reflector strip, microcomputer, and laser scanner to detect and communicate the position of products on shelves, enabling automated inventory tracking, theft detection, and promotional effectiveness analysis through data transmission and security camera integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual inventory counting is performed, then inventory levels can be determined, but significant manual labor is required
Solution Approach 1:
The patent replaces manual mechanical counting with an automated optical detection system. A sensor assembly with light sources and detectors automatically measures product quantities on shelves by detecting reflections from product surfaces, eliminating the need for manual visual inspection and counting while providing precise inventory level data.
Solution Approach 2:
The system enables self-service inventory monitoring where the sensor assembly continuously and automatically tracks product levels without human intervention. The collected data is transmitted to a central computer that automatically updates inventory records and generates restocking alerts, creating a self-managing inventory system.
2Object-affected harmful factors
If in-store cameras are used for theft detection, then theft monitoring is provided, but the cameras do not observe theft clearly enough to catch or prosecute the thief
Solution Approach 1:
The patent introduces pusher assemblies as intermediary devices between products and security monitoring. These pushers are equipped with sensors and indicators that detect product removal attempts and provide clear, unambiguous signals to security personnel, serving as a mediator that translates subtle theft actions into detectable events with high precision.
Solution Approach 2:
The system replaces passive optical camera monitoring with active mechanical-sensing pusher assemblies. These devices use mechanical sensors to detect product removal forces and movements, providing more reliable and clearer theft detection data compared to visual camera observation alone.
3Reliability
If more inventory is maintained on shelves to ensure stock availability, then customer demand can be met, but valuable shelf space is consumed and unnecessary inventory costs increase
Solution Approach 1:
The patent implements continuous feedback loops where sensor assemblies monitor product levels in real-time and transmit data to a central computer. The system automatically compares current stock levels against minimum thresholds and generates immediate restocking notifications, enabling precise inventory management that maintains availability while minimizing excess stock.
Solution Approach 2:
The system transforms static inventory levels into dynamic, continuously monitored data. Product quantities are tracked in real-time as they change, allowing the store to optimize shelf space allocation based on actual consumption rates and demand patterns rather than maintaining fixed buffer stocks.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Reduces manual labor in inventory management, enhances theft detection, and optimizes inventory levels by providing real-time data on product availability, improving promotional effectiveness and reducing unnecessary stock levels.
Implementation Method 1
a laser assembly comprising a laser scanner. The laser scanner may be configured to transmit a laser beam to a rotating mirror, wherein the rotating mirror directs the laser beam to a mirrored reflective surface located along the length of the rear reflector strip
Implementation Method 2
The mirrored reflective surface may also comprise a plurality of angled mirror sections that are configured to reflect the laser beam to the pusher assembly
Implementation Method 3
the plurality of flat sections configured to retro-reflect the laser beam back to the laser scanner. The control module may analyze the laser beam at the laser scanner
Data Source
AI summary
The present invention relates to a system for detecting and communicating the position of a pusher assembly on a shelf. In an embodiment, a system includes a control module, a pusher assembly, and a laser scanner. The laser scanner is configured to transmit a swept beam to a mirrored reflective surface located behind the pusher assembly. The control module analyzes the laser beam at the laser scanner to detect the position of the pusher assembly on the shelf. In another embodiment, a system includes a control module, a pusher assembly, and an infrared transceiver that sends and receives infrared signals. The transceiver may be located behind the pusher assembly. The control module analyzes the infrared signals to determine the position of the pusher assembly on the shelf.