Composite Coin Separator for Authentication
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Solution Overview
Problem
Existing composite coin structures lack effective security features for authentication, particularly in generating unique frequency-dependent capacitance values to differentiate between components, which is crucial for secure identification and validation.
Innovation Solution
A striked composite structure comprising an inner stack of inserts, an outer ring, and a separator made of different materials, where the separator provides varying frequency-dependent capacitance values between the inserts and the outer ring, generating up to three distinct capacitance signatures for authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional single, bi- or tri-metallic coin structures are used, then visual identification and basic security features are provided, but unique frequency-dependent capacitance values for authentication are not generated
Solution Approach 1:
The patent introduces a dielectric separator as an intermediary component between conductive inserts and the outer ring. This separator generates frequency-dependent capacitance values that serve as authentication features, without requiring complex multi-material constructions. The mediator approach adds authentication capability while maintaining structural simplicity.
Solution Approach 2:
The patent employs composite structure combining conductive inserts, dielectric separator, and outer ring. This composite approach enables generation of unique capacitance signatures through the interaction of different materials, providing authentication security without excessive structural complexity.
2Reliability
If multiple discrete inserts are stacked to create tri-metallic coins, then additional security features are provided, but the number of junctions increases making the structure more complex and harder to validate
Solution Approach 1:
The dielectric separator acts as a mediator that simplifies the validation process. Instead of validating multiple metal-to-metal junctions, the system validates the capacitance signature generated by the separator, reducing the number of validation points while maintaining security.
Solution Approach 2:
The patent replaces mechanical junction validation with electromagnetic field-based capacitance measurement. This substitution eliminates the need to physically validate multiple junctions, simplifying the validation process while enhancing security through frequency-dependent capacitance signatures.
3Reliability
If conventional coin structures without dielectric separators are used, then manufacturing is simpler, but unique capacitance signatures for authentication cannot be generated
Solution Approach 1:
The dielectric separator is introduced as a straightforward intermediary component that can be manufactured and assembled using conventional processes. Its primary function of generating capacitance signatures does not require complex manufacturing, thus maintaining ease of manufacture while enabling authentication.
Solution Approach 2:
The patent utilizes changes in dielectric parameters (permittivity, thickness) of the separator to generate unique capacitance signatures. These parameter variations can be achieved through standard manufacturing tolerances and material selections, avoiding complex manufacturing requirements while providing authentication capability.
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
The solution enhances security by providing a unique capacitance signature that is difficult to replicate, ensuring reliable identification and authentication of the composite coin structure, thereby preventing counterfeiting.
Implementation Method 1
the separator provides varying frequency-dependent capacitance values between the inserts and the outer ring, generating up to three distinct capacitance signatures for authentication
Data Source
Figure 1A~1C
Figure 1D
Figure 2
AI summary
A composite coin, coin black, medal or token structure provides an inner stack, an outer ring surrounding the inner stack, and a separator, an authentication method and method of manufacture for the same. The inner stack comprises one or more inserts stacked on top of each other. The separator is disposed between the outer ring and the inner stack separating the outer ring from the inner stack and separating the plurality of inserts from each other.