RFID Dispenser Authentication to Prevent Unauthorized Refilling
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Solution Overview
Problem
Existing fluid dispensers face issues with ensuring the correct type of fluid is installed and preventing unauthorized refilling, leading to inventory and liability problems, as mechanical keying systems are costly and prone to tampering, and RFID systems lack effective communication and reusability.
Innovation Solution
A dispensing system utilizing RFID communication between the dispenser and refill container, with a controller that decodes identification codes, enables secure and authorized refilling, monitors usage, and adjusts dispensing parameters based on cartridge identity, ensuring proper operation and preventing unauthorized use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical keying systems are used to prevent unauthorized refilling, then security against stuffing is improved, but device complexity and manufacturing costs increase
Solution Approach 1:
The patent replaces mechanical keying systems with RFID (radio frequency identification) technology. Instead of using physical keys and mechanical locks, the system uses electronic tags and readers to authenticate refill containers. This substitution eliminates complex mechanical components while maintaining security against unauthorized refilling and stuffing.
Solution Approach 2:
The patent introduces an RFID tag as an intermediary component between the refill container and the dispenser. The tag contains identification information that mediates the authentication process, allowing the dispenser to verify the legitimacy of refill containers without direct mechanical interaction. This intermediary simplifies the overall system while providing reliable security.
2Device complexity
If RFID systems are used for communication, then device complexity is reduced, but communication effectiveness and reusability worsen
Solution Approach 1:
The patent implements a feedback mechanism where the RFID reader in the dispenser communicates with the RFID tag in the refill container, verifies authentication, and provides feedback signals. The system reads identification information from the tag, validates it against authorized containers, and provides immediate feedback by enabling or disabling the dispensing function. This ensures reliable communication and effective authentication.
3Adaptability or versatility
If specialized keyed dispensers are manufactured for each product type, then product compatibility is ensured, but manufacturing costs and inventory complexity increase
Solution Approach 1:
The patent creates a universal dispenser system that can work with multiple product types through RFID authentication. Instead of manufacturing specialized keyed dispensers for each product, a single dispenser design with an RFID reader can authenticate and work with various refill containers containing different products. The RFID tag stores product identification information, allowing the universal dispenser to adapt to different products software-wise rather than requiring hardware variations.
Data Source
AI summary
A radio frequency identification (RFID) dispenser that includes low cost electronic components that can read and write to the tag of a refill cartridge. In one embodiment, the reader utilizes a multi band pass filter to convert the radio frequency identification into a digital signal that is processed by a controller to perform a dispensing function representative to the code of the tag. In another embodiment, the controller utilizes an internal comparator to convert the radio frequency identification into a digital signal that is processed by a controller to perform a dispensing function representative to the code of the tag. The dispenser in both embodiments also includes a pair of transistors that write to the RFID tag of the refill cartridge. A dispenser according to the invention also includes the capability to read and/or write to tags upon cartridges employed by the dispenser, and augmenting the operation of the dispenser as a function thereof. Additionally, a dispenser of variable size is presented that is adaptable, through adjustable partitions or a telescoping cup, to receive and maintain cartridges of various sizes.