Bank Note Protection via Shock-Activated Dye Capsules
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Solution Overview
Problem
Automatic teller machines (ATMs) are vulnerable to explosive attacks, and existing protection methods, such as soft plastic sachets or fully automated electronic systems, are either ineffective or costly and prone to destruction during an explosive event, failing to ensure the integrity of bank notes.
Innovation Solution
A bank note dispenser with a sealed container made from materials like glass or high-density polyethylene, featuring zones of weakness that break under explosive shockwaves, releasing a traceability substance like dye or adhesive onto the bank notes, ensuring they can be distinguished and secured even after an attack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If soft plastic sachets containing ink are placed between bank notes, then the ink can be released onto adjacent notes when a sachet is broken by an explosive shock wave, but the sealing process to enclose the ink is not warranted for an extended period and each sachet must be handled during packing
Solution Approach 1:
The protection system is divided into multiple independent capsules distributed throughout the bank note stack. Each capsule is self-contained and functions independently, so if one capsule fails or is broken, others remain intact and continue to provide protection. This segmentation also eliminates the need for complex sealing processes during packing, as each capsule is pre-sealed and requires no handling beyond placement.
Solution Approach 2:
The capsules are pre-filled and pre-sealed with the traceability substance before being introduced to the bank notes. This preliminary preparation ensures that the sealing is performed under controlled conditions during manufacturing, guaranteeing extended lifetime and reliability. During bank note packing, only the simple action of placing pre-prepared capsules is required, eliminating complex sealing operations.
2Reliability
If a fully automated electronic system with sensors and explosives is used to release ink upon detecting intrusion, then physical attacks or break-ins can be countered effectively, but the system is expensive to install and maintain and is often destroyed before dye can be released
Solution Approach 1:
The capsules are designed to function autonomously without requiring external control systems. Each capsule contains the traceability substance and is equipped with a shock-responsive mechanism that automatically releases the substance when subjected to explosive forces. This self-service capability eliminates the need for expensive sensors, control electronics, and power sources, while ensuring the protection mechanism cannot be destroyed before activation since it has no external components to fail.
Solution Approach 2:
The complex electronic control system, sensors, and power sources are completely removed from the protection mechanism. Only the essential elements remain: the capsule containing the traceability substance and the shock-responsive release mechanism. This extraction of unnecessary components simplifies the system, reduces cost, and eliminates vulnerability to electronic destruction while maintaining effectiveness against explosive attacks.
3Productivity
If conventional bank note packing procedures are used, then the process is efficient and simple, but there is no protection mechanism integrated into the packing process
Solution Approach 1:
The capsule serves multiple functions: it acts as a spacer during packing to maintain bank note separation, provides structural support within the bundle, and delivers the traceability substance upon explosive activation. This multi-functionality allows the same object to be integrated into conventional packing procedures without adding complexity, while simultaneously providing robust protection. The capsules can be placed using existing packing equipment and procedures, maintaining productivity while ensuring reliability.
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 provides a robust, passive protection mechanism that withstands everyday wear and tear while ensuring the bank notes can be traced and secured, as the container breaks under explosive forces, dispersing the substance uniformly across the notes, making them distinguishable and tamper-evident.
Implementation Method 1
the container breaks under the effect of a shockwave produced by an explosive attack
Data Source
Figure 1
Figure 2~2A
Figure 3
AI summary
A protective device which includes a sealed container which is made from a material which breaks under the effect of a shock wave in excess of a predetermined magnitude and a substance inside the container that gives rise to a bank note traceability factor.