Active RFID Tag Automatic Code Updating for Hospital Inventory
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Solution Overview
Problem
Reusable RFID tags lack a mechanism to automatically update their identification codes upon usage, leading to ambiguity and potential errors in assigning correct pairings of donor and recipient components, particularly in settings like hospitals where miscommunication can result in lethal errors.
Innovation Solution
An active RFID tag encoded with a single-use code that broadcasts a new code upon a trigger event, which is then rewritten with a new single-use code by an authorized controller, ensuring each usage event is uniquely registered and preventing ambiguity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a reusable RFID tag is used without automatic code updating, then the tag can be reused across multiple uses, but ambiguity arises as to whether the tag has been coded for a new use or is still projecting an identification signal from a prior use
Solution Approach 1:
The system performs preliminary actions by automatically updating the RFID tag's identification code at the moment of use completion. The processor detects when the tag has been used and immediately generates a new identification signal, ensuring the tag is prepared for its next use without manual intervention. This preliminary updating eliminates the ambiguity between prior and new use signals.
Solution Approach 2:
The system implements feedback by continuously monitoring the usage status of the RFID tag and automatically responding by updating its identification code. When the processor detects that a tag has been used, it triggers an automatic recoding process that feeds back into the tag, ensuring the identification signal always reflects the current usage state rather than a prior state.
2Productivity
If manual updating of RFID tag codes is performed, then resource allocation can be controlled, but miscommunication occurs when multiple individuals work on projects in shifts or from different locations
Solution Approach 1:
The RFID tag system performs self-service by automatically updating its own identification code without requiring manual intervention from resource managers or staff. The processor embedded in or associated with the tag autonomously detects usage completion and triggers the recoding process, eliminating communication gaps that occur when multiple individuals manage tag updates across different shifts or locations.
Solution Approach 2:
The system replaces the mechanical/manual process of RFID tag code updating with an automated electronic system. Instead of relying on human operators to manually recode tags, a processor automatically detects usage and generates new identification signals, substituting human action with an electronic automation that eliminates miscommunication and ensures consistent resource tracking across all users and locations.
3Device complexity
If an electronic verification system assigns pairings without automatic tag updates, then the system structure remains simple, but the likelihood of process errors increases
Solution Approach 1:
The system merges the RFID tag's identification function with an automatic updating mechanism by integrating a processor that continuously monitors usage and self-generates new identification codes. This combination creates a unified system where the tag not only identifies items but also automatically manages its own code updates, eliminating the need for separate manual updating procedures while ensuring accurate pairing information is always available to the verification system.
Data Source
AI summary
A process for tracking an object within an inventory control space is provided. The space is illustratively a medical care delivery setting. An active radiofrequency (RFID) tag is encoded with a single-use code and associated with an inventory item. After a trigger event, the RFID tag transmits a modified broadcast. The single-use code that is a new number with at least one sparse digit or a new secondary number with a retained primary digit. An RFID tag configured to retain such a code scheme is provided. A hospital inventory item labeled with such an RFID tag is also provided.