Portal Scanner Indicator Lights for Multi-Item Read Exceptions
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Solution Overview
Problem
Traditional semi-automatic scanner systems are not suitable for portal scanner systems, as they lack effective indicators for handling exceptions such as failed barcode reads in automated environments where multiple items are processed simultaneously.
Innovation Solution
An automated optical code reading system with a portal data reader and conveyor system that includes multiple data capture devices, an exception identification system, and an exception handling system to manage and resolve exceptions by generating visual representations and communicating with operators or clerks for manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional semi-automatic scanner indicator systems are used in portal scanner systems, then the system structure remains simple, but the system cannot effectively handle exceptions in automated environments with multiple items processed simultaneously
Solution Approach 1:
The indicator system is segmented into multiple independent indicator lights (first indicator light for good reads, second indicator light for exceptions) positioned at different locations. Each indicator light independently indicates the status of items passing through the portal, allowing the system to handle multiple items simultaneously while maintaining clear visual feedback for operators.
Solution Approach 2:
The system transitions from a single-dimension indicator (one light for all items) to a multi-dimensional indicator system where multiple lights are positioned at different spatial locations corresponding to different item positions. This spatial dimensionality allows simultaneous monitoring of multiple items and provides location-specific exception information.
2Reliability
If multiple indicator lights are used to indicate read status of multiple items, then exception handling capability is improved, but the device complexity increases
Solution Approach 1:
The system uses the existing conveyor belt structure and item positioning system to automatically determine which indicator light should be activated. Each indicator light is associated with a specific spatial zone, and the system automatically activates the appropriate indicator based on the item's position and read status, eliminating the need for complex manual routing or additional control components.
Solution Approach 2:
The indicator lights serve multiple functions: they indicate both successful reads and exceptions, provide spatial information about item location, and work across different operating speeds. The same indicator infrastructure handles various exception types (failed reads, misplaced items, etc.) without requiring separate indicator systems for each function.
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
The system effectively identifies and handles exceptions in real-time, ensuring accurate data capture and processing of items through the use of visual feedback and automated handling protocols, enhancing the efficiency of high-volume retail or industrial checkout processes.
Implementation Method 1
a data reader (12) that reads optical code information from the items
Implementation Method 2
a first indicator light (60) that receives a first external electrical signal and indicates a good read status when alighted with the leading edge of the item, and a second indicator light (65) that receives a second external electrical signal and indicates an exception status when alighted with the leading edge of the item
Data Source
AI summary
An automated checkout system and method including a conveyor system that automatically transports objects along an item path through a read zone of a data reader (such as a portal data reader, tunnel scanner or other type of automated reader) and to an exit zone, an indicator system disposed in or along the exit zone that provides indication as to whether an item has been identified by the portal data reader. In one example, the indicator system includes lights at an indicator location that are selectively alighted a given color for the duration of the item passing the indicator location depending upon whether the reader successfully read the item (e.g., color green) or unsuccessfully read the item (e.g., color red).