Discriminating web material dispenser
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Solution Overview
Problem
Conventional automatic dispensers face issues with waste due to inconsistent dispensing of web materials, as they do not adapt to the specific characteristics of the material, and existing smart dispensers with RFID or bar code systems are costly, complex, and can be circumvented by transferring tags to unauthorized rolls.
Innovation Solution
An automatic dispenser that uses a frequency-changing device or material on the roll core, interacting with an electromagnetic field to determine authorization and adjust dispensing settings, preventing unauthorized use and ensuring tailored dispensing based on roll characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RFID smart chips or bar code readers are used to identify approved rolls, then the lockout feature can prevent unauthorized rolls from being used, but the cost and complexity of the dispenser significantly increase
Solution Approach 1:
The patent extracts the identification function from complex RFID or bar code systems and implements it using a simple frequency-changing device embedded in the roll core that interacts with the dispenser's electromagnetic field. This reduces the dispenser's complexity while maintaining the lockout feature's effectiveness.
Solution Approach 2:
Instead of using complex RFID chips or bar code readers, the patent uses a simplified frequency-based identification system where the roll core contains a frequency-changing device that can be detected by the dispenser's electromagnetic field, creating a lightweight copy of the identification functionality.
2Reliability
If RFID smart chips are embedded in the roll core, then the dispenser can identify approved rolls, but the cost of each roll significantly increases
Solution Approach 1:
The patent replaces expensive RFID smart chips with inexpensive frequency-changing devices embedded in the roll core. These simple devices can be manufactured at low cost while still providing reliable roll identification through their interaction with the dispenser's electromagnetic field.
Solution Approach 2:
The patent substitutes the electronic RFID chip system with a frequency-based identification mechanism using electromagnetic field interaction. This replacement significantly reduces the cost of the identification device while maintaining its functional reliability.
3Reliability
If bar code readers and microcontrollers are used for lockout functionality, then unauthorized rolls are prevented from being used, but the overall size of the dispenser increases
Solution Approach 1:
The patent extracts the identification functionality from bulky bar code readers and microcontrollers, implementing it through a compact frequency-based system using electromagnetic field interaction. This reduces the dispenser's overall size while maintaining unauthorized roll prevention capability.
Solution Approach 2:
The dispenser's electromagnetic field serves multiple functions: it both identifies approved rolls through frequency interaction and prevents unauthorized rolls from being used. This multi-functionality eliminates the need for separate bulky identification and control components.
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
This solution effectively prevents unauthorized use and optimizes dispensing by ensuring only approved rolls are used, reducing waste and maintaining performance while avoiding the high costs and complexities of traditional smart systems.
Implementation Method 1
uses a frequency-changing device or material on the roll core, interacting with an electromagnetic field to determine authorization
Data Source
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AI summary
An automatic product dispenser determines if the roll loaded into the dispenser is approved for use with the dispenser. The core of a roll contains a feature that alters an electromagnetic field created proximate the core. The alteration of the electromagnetic field may then be used to determine if the core, and thus the roll, is usable with the dispenser. The feature is designed such that it is damaged once product is completely dispensed from the roll thereby preventing replenishment and reuse of a spent roll.