Infrared Document Verification Apparatus with Segmented Measuring Tracks
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Solution Overview
Problem
Existing systems for checking documents of value with machine-readable security features in the invisible spectral region are complex and costly, requiring effective and cost-efficient solutions for authenticity and nominal value verification.
Innovation Solution
A measuring apparatus that evaluates multiple measuring frequencies and positions of discrete tracks to detect different invisible spectral properties, allowing for secure checks with minimal equipment, adaptable for both permanent integration and handheld use, particularly in the infrared spectral region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple measuring tracks and frequencies are used to check different invisible spectral properties, then the reliability of document verification is improved, but the device complexity and cost increase
Solution Approach 1:
The invention divides the measuring apparatus into multiple independent measuring tracks (first and second measuring tracks) that can be selectively activated. Each track is equipped with its own measuring element and can operate at different measuring frequencies. This segmentation allows the system to achieve reliable multi-frequency verification while maintaining the option to use only one track at a time, thereby controlling device complexity and cost.
Solution Approach 2:
The patent implements a configuration where more measuring tracks and frequencies are available than strictly necessary for basic verification. The system can selectively activate only the required number of tracks and frequencies based on the specific verification needs, rather than always using all available resources. This partial action approach ensures high reliability when needed while allowing cost-effective operation with fewer active components.
2Measurement precision
If multiple measuring frequencies are used to detect different invisible spectral properties, then the measurement precision is improved, but the loss of energy increases
Solution Approach 1:
The measuring apparatus is designed to alternate between different measuring frequencies in a periodic manner rather than operating continuously at all frequencies simultaneously. The system can switch between first and second measuring frequencies as needed, activating only the required frequency at any given moment. This periodic activation of different frequencies achieves precise spectral property detection while significantly reducing overall energy consumption compared to continuous multi-frequency operation.
3Device complexity
If a single measuring track is used for longitudinal transport, then the device complexity is reduced, but the measurement precision for detecting multiple spectral properties decreases
Solution Approach 1:
The invention creates a dynamic system where the functionality of the measuring apparatus can change based on operational needs. The apparatus includes both first and second measuring tracks with different orientations, and the system dynamically selects which track to use based on the transport direction of the document. For longitudinal transport, the system activates the appropriate single track to maintain simplicity, while the capability to switch between tracks provides the precision needed for detecting multiple spectral properties when required.
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
Enables secure and cost-effective verification of documents by determining the presence of specific infrared spectral properties, reducing the likelihood of faulty evaluations through multiple frequency and spatial measurements, suitable for various currencies and nominal values.
Implementation Method 1
The measuring apparatus preferably is adapted to measure in the infrared spectral region and the different not visible spectral properties are e.g. different spatial and/or spectral courses of measuring values
Data Source
AI summary
The invention relates to an apparatus and a method for automatically checking sheet-shaped documents of value.According to the present invention a simply constructed measuring apparatus can be obtained, by the measuring apparatus evaluating measuring values e.g. at least two measuring frequencies and the position of one or a plurality of discrete measuring tracks being determined in such a way that at least the presence of two different not visible spectral properties of a predetermined type of authentic documents of value can be checked.