Document Checking Luminescence Track Integration
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Solution Overview
Problem
Existing systems for checking documents of value with luminescent feature substances have low measuring sensitivity, particularly when these substances have low luminescence intensity and are distributed over a large surface area.
Innovation Solution
The method involves integrating luminescence radiation measurements across a track extending across the document, allowing for secure recognition of luminescent feature substances with low intensity by compensating for fluctuations and reducing evaluation time, using a combination of spectrally resolved and time-integrated measurements compared to reference values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If luminescence radiation is measured at discrete localized areas, then the measuring process is simple and fast, but the measuring sensitivity is low for substances distributed over large surfaces
Solution Approach 1:
The patent transitions from measuring luminescence at discrete two-dimensional points to integrating measurements along a one-dimensional track extending across the document. This dimensional extension allows accumulation of luminescence signals from distributed feature substances, thereby improving measuring sensitivity without requiring complex two-dimensional scanning systems
Solution Approach 2:
The patent combines multiple luminescence measurements taken at different positions along the measuring track into a single integrated value. By merging these individual measurements, the system achieves higher sensitivity for detecting low-intensity luminescence from distributed substances while maintaining a relatively simple measurement process
2Measurement precision
If luminescence measurements are taken at multiple discrete points, then spatial distribution information can be obtained, but the evaluation time increases
Solution Approach 1:
The patent extends the measurement from point-based (0D) or area-based (2D) sampling to track-based (1D) integration across the document. This dimensional approach allows comprehensive detection of distributed luminescent substances while maintaining efficient single-pass measurement, reducing evaluation time compared to multi-point discrete sampling
Solution Approach 2:
The patent implements continuous luminescence measurement along the entire measuring track in a single operation, rather than performing discrete sequential measurements at multiple points. This continuous measurement approach maintains high detection accuracy while significantly reducing the time required for evaluation
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 approach enhances measuring accuracy and security, enabling reliable detection of luminescent feature substances even when they are randomly distributed, improving the signal-to-noise ratio and allowing for precise authentication and nominal value determination.
Implementation Method 1
a substance consisting of one single component or of a mixture of a plurality of components, which show a luminescence behavior
Implementation Method 2
the remitted fluorescence radiation is captured in a spectrally resolved manner
Data Source
AI summary
The invention relates to an apparatus and a method for checking documents of value having luminescent feature substances. By carrying out the evaluation of the captured luminescence radiation on the basis of an integrated luminescence measuring, which is obtained by integrating the measured luminescence radiation of a track extending transversely across the document of value, a particularly easy capturing and differentiation even of faintly glowing feature substances is permitted.