Banknote Serial Number Recognition via Sensor Fusion
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Solution Overview
Problem
Existing bank note processing systems face challenges in accurately and securely determining serial numbers, leading to impaired processing and tracking when recognition errors occur, especially due to disturbances like jams or partially covered serial numbers.
Innovation Solution
A method and apparatus that utilize a sensor device to establish a unique serial number for each bank note by evaluating data from CCD sensors and infrared sensors, with a control device allocating bank notes based on features and storing serial numbers for secure tracking, even in the presence of disturbances, using OCR and algorithms for partial recognition and check digit evaluation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If serial numbers are determined using sensors in the processing system, then the quality of processing is improved through batch and issue identification, but recognition errors occur leading to impaired processing and tracking
Solution Approach 1:
The system establishes feedback loops where recognized serial numbers are validated against expected formats and patterns. When recognition errors are detected, the system can request re-scanning or alternative reading methods, thereby improving both measurement precision and processing reliability without requiring manual intervention for every error.
2Measurement precision
If multiple sensors are used to detect serial numbers, then recognition accuracy improves, but device complexity increases
Solution Approach 1:
The patent combines multiple sensor types (optical sensors, infrared sensors, and other detection devices) into an integrated sensor system that functions as a unified detection unit. This merging approach maintains high recognition accuracy while reducing overall system complexity compared to using separate independent sensor systems.
Solution Approach 2:
The sensor system is designed with multi-functional capabilities where the same sensor array can detect various features including serial numbers, security elements, and physical characteristics of banknotes. This universal detection capability improves accuracy without proportionally increasing device complexity.
3Manufacturing precision
If serial numbers are used for tracking and processing operations, then processing quality improves, but processing speed may be reduced due to verification requirements
Solution Approach 1:
The system performs preliminary validation of serial number formats and patterns during the recognition phase itself, rather than requiring separate verification steps later in the processing chain. This preliminary action ensures processing quality while minimizing speed reduction by catching errors early in the workflow.
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
Ensures secure and accurate allocation and tracking of bank notes with unique serial numbers, improving processing efficiency and handling disturbances by enabling individual identification and correction of recognition errors, thus enhancing overall bank note processing quality.
Implementation Method 1
evaluating data from CCD sensors and infrared sensors
Implementation Method 2
evaluating data from CCD sensors and infrared sensors
Data Source
AI summary
A bank note processing apparatus processes bank notes by first singling the bank notes, then transporting the singled bank notes through a sensor device and on to several output units. Before delivering the bank notes to the output units, the bank notes are checked by evaluating data as well as determining and storing serial numbers of the bank notes, wherein the bank notes are delivered to the output units depending on the result of the checking. Further, in determining the serial numbers of the bank notes, a unique serial number is established for each bank note.