Frangible RFID Tag Inventory Tracking System
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Solution Overview
Problem
Current electronic access control systems for secure storage enclosures lack a comprehensive solution for integrated inventory control and access management, particularly in environments where tracking of controlled substances and secure storage is critical, such as in medical facilities or EMS vehicles, where secure, automated, and transparent tracking of items and access is necessary.
Innovation Solution
The implementation of an electronic access and inventory system that utilizes RFID tags with frangible components, which alter their ID characteristics upon access, combined with an electronically actuated lock system and an RFID reading system, to track consumable items within enclosures, maintaining a virtual 'chain of custody' and enabling automated billing and future planning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional mechanical key locks are used for secure storage enclosures, then ease of operation is maintained, but security and tracking capability deteriorate due to key loss, theft, and inability to track access
Solution Approach 1:
The patent replaces mechanical key locks with an electronic access control system that uses RFID readers, microprocessors, and electronic locks. This substitution eliminates physical keys that can be lost or stolen, while providing enhanced security through electronic authentication and tracking capabilities. The system reads binary numbers from credentials or biometric features and compares them against approved lists to determine access rights.
Solution Approach 2:
The patent introduces an intermediary microprocessor-based system that acts as a mediator between the user and the lock mechanism. This intermediary reads credentials, processes authentication, and controls the electronic lock, thereby providing both security and detailed access tracking without requiring direct mechanical key insertion.
2Reliability
If electronic access control systems are implemented, then security and access tracking are improved, but device complexity increases due to multiple components including credential readers, microprocessors, and electronic locks
Solution Approach 1:
The patent combines multiple functions into integrated components. The electronic lock system merges credential reading, biometric scanning, microprocessor-based authentication, and lock actuation into a unified access control unit. This consolidation reduces the number of separate components while maintaining all necessary security and tracking functions.
Solution Approach 2:
The patent implements a universal access control system that can handle multiple credential types (cards, biometrics, keypads) and serves multiple functions (access control, inventory tracking, chain of custody documentation) through a single integrated platform, thereby reducing overall system complexity despite the enhanced capabilities.
3Measurement precision
If RFID tags with frangible components are used for inventory tracking, then measurement precision of inventory status is improved, but device complexity increases due to the frangible component design
Solution Approach 1:
The patent changes the physical state or integrity of the RFID tag as a tracking parameter. The frangible component is designed to rupture or change its RFID signal characteristics when inventory is accessed or removed. This parameter change (from intact to ruptured) provides precise inventory status detection without requiring complex additional sensors or mechanisms.
Solution Approach 2:
The patent uses changes in RFID signal characteristics (analogous to color changes in optical systems) to indicate inventory status. When the frangible component is ruptured, the RFID tag's signal properties change, providing a clear, detectable indicator of inventory access or removal without requiring visual inspection or additional tracking devices.
4Loss of information
If comprehensive inventory tracking and access control are integrated, then loss of information is reduced through detailed audit trails, but device complexity and data management requirements increase
Solution Approach 1:
The patent implements feedback mechanisms where the system automatically records and reports access events, inventory changes, and chain of custody information. The microprocessor-based system continuously monitors RFID tag status, logs access attempts, and generates audit trails that provide real-time feedback on system state, thereby maintaining complete information records through automated processes rather than manual tracking.
Data Source
AI summary
Disclosed are apparatuses and corresponding and associated methodologies for achieving current inventory data management in combination with an electronic access control system. An access control system provides access control data while the sealed enclosure incorporates an RFID reading system for determining the identity of respective tagged contents within the enclosure. Particularly in conjunction with the storage of controlled substances, such as some drugs utilized on an EMS vehicle, a form of RFID tag may be practiced which operationally is fully or partially destroyed or damaged, or otherwise impacted or affected so as to generate a changed ID, whenever the contained medicinal dosage is acquired for administration. By reading contents of the enclosure (narc box) prior to a work shift, and at the conclusion of the work shift, comprising tracking comparative methodology, usage of the tagged drugs may be tracked. By forming such reports throughout the course of a shift, as each point of consumption takes place, a complete record of custody of control may be maintained.