ATM RGB Light Sensing for Cash-Trap Tampering Detection
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Solution Overview
Problem
Existing automated teller machines (ATMs) are vulnerable to tampering, particularly through cash trapping elements that deceive operators into believing the output compartment is closed, and existing solutions like camera units for monitoring are costly and complex.
Innovation Solution
An ATM equipped with RGB light sources and sensors that emit and detect RGB mixed light, allowing for reliable detection of tampering by analyzing light properties, which are difficult to manipulate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If camera units are used to monitor the automated teller machine, then tampering detection capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex mechanical/optical camera systems with a simpler optical detection system using RGB light sources and sensors. This substitution maintains tampering detection capability while significantly reducing device complexity and cost.
Solution Approach 2:
The invention uses inexpensive RGB light sources and sensors instead of expensive camera units. These simpler components achieve the same functional goal at a fraction of the cost and complexity.
2Measurement precision
If camera units with image processing are used, then tampering detection accuracy is improved, but manufacturing cost and system complexity increase
Solution Approach 1:
The patent replaces complex image processing systems with a simpler optical property detection system. By measuring changes in optical properties such as absorption, reflection, or scattering, the system achieves accurate tampering detection without requiring expensive camera hardware and sophisticated image analysis algorithms.
Solution Approach 2:
The invention detects tampering by monitoring changes in optical parameters (absorption, reflection, scattering) rather than requiring full image processing. This parameter-based approach simplifies both manufacturing and operation while maintaining detection accuracy.
3Device complexity
If simple monitoring methods are used, then device complexity is reduced, but tampering detection reliability deteriorates
Solution Approach 1:
The patent employs a simple yet reliable optical detection system using RGB light sources and sensors. This system achieves high tampering detection reliability through straightforward optical measurements without requiring complex hardware or software infrastructure.
Solution Approach 2:
The invention introduces optical properties (absorption, reflection, scattering) as intermediary indicators of tampering. By measuring these intermediate optical parameters, the system achieves reliable detection with simple components, avoiding the need for complex direct observation systems.
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 effectively and efficiently detects tampering, particularly with cash trapping elements, reducing costs and complexity compared to camera-based systems.
Implementation Method 1
An RGB light source, which is arranged on an operating side of the automated teller machine and emits an RGB mixed light, and an optical RGB sensor arranged at a distance from the RGB light source for registering the RGB mixed light emitted by the RGB light source
Implementation Method 2
optical RGB sensor arranged at a distance from the RGB light source for registering the RGB mixed light emitted by the RGB light source
Data Source
AI summary
An automated teller machine comprises at least one RGB light source, which is disposed on an operating side of the automated teller machine and emits an RGB mixed light, and an optical RGB sensor for sensing the RGB mixed light emitted by the RGB light source, the optical RGB sensor being disposed at a distance from the RGB light source. Furthermore, the automated teller machine comprises a control unit, which is designed such that the control unit detects tampering with the automated teller machine on the basis of the emitted and the sensed RGB mixed light.