Automated Warehouse Tag Reader ID Filtering
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Solution Overview
Problem
In automated warehouses, the use of wireless tags for article identification can lead to misreading due to the long reading range, causing incorrect identification and management issues, especially when storage sections are close together, and implementing shields to mitigate this complicates the facility configuration and increases costs.
Innovation Solution
The automated warehouse employs a control unit that filters identification information by comparing read data from wireless tags at loading sections with recorded information in a recording unit, ensuring accurate identification by distinguishing between the target article and nearby stored articles, even at short distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a wireless tag reader with long reading range is used, then reading speed and efficiency are improved, but misreading of nearby articles occurs
Solution Approach 1:
The system uses feedback by comparing the read identification information against the database of already-stored article IDs. When a mismatch is detected, the system identifies and excludes the erroneous reading, thereby maintaining high reading speed while ensuring identification accuracy through automated verification feedback.
Solution Approach 2:
The patent changes the parameter of reading range by using a long-range wireless tag reader but compensates for the resulting misreading issue through parameter-based filtering (comparing ID values). This allows the system to maintain the productivity benefits of long-range reading while eliminating the precision problems through computational parameter verification.
2Measurement precision
If shields are installed to reduce misreading, then identification accuracy is improved, but facility complexity and cost increase
Solution Approach 1:
The patent replaces the mechanical/physical solution (shields) with an information-processing solution (software-based ID comparison and filtering). Instead of using physical barriers to prevent misreading, the system uses computational logic to identify and exclude erroneous readings, thereby maintaining identification accuracy without increasing facility complexity or cost.
Solution Approach 2:
The patent introduces an intermediary layer of logical processing between the wireless tag reader and the article management system. This intermediary filtering mechanism compares read IDs against stored records and excludes mismatches, serving as a virtual mediator that prevents erroneous data from entering the system without requiring physical shielding.
3Productivity
If wireless tags with long reading range are used, then operational efficiency is improved, but false identification of articles occurs
Solution Approach 1:
The system implements feedback control by continuously verifying read identification information against the database of stored article IDs. When a false identification is detected (mismatch between read ID and expected ID), the system automatically excludes the erroneous data, thereby maintaining operational efficiency while ensuring article management reliability through automated verification.
Solution Approach 2:
The patent converts the harmful effect of long-range reading (which causes false readings of nearby articles) into a beneficial filtering opportunity. By designing the system to compare and validate read IDs against stored records, the long reading range becomes advantageous for reading speed while the validation process eliminates false identifications, turning a potential problem into a verified advantage.
Data Source
AI summary
An automated warehouse includes a storage rack, at least one loading section where loading processing of loading a loading target article is performable, a transport apparatus, and a control unit. Each article includes a wireless tag in which identification information unique the article is recorded. The loading section includes a wireless tag reader configured to read the wireless tag. In the loading processing, the control unit reads, with the wireless tag reader, the wireless tag of the loading target article, and in response to the read identification information not matching any identification information of other articles already recorded in a recording unit, the control unit records the read identification information as the identification information of the loading target article in the recording unit.