Banknote Detector Using Combined UV and White Light Imaging
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Solution Overview
Problem
Existing banknote detectors are complex and prone to faults due to multiple sensors, affecting accuracy and reliability, requiring operators to rely solely on the device's judgment, which can lead to misjudgments and increased maintenance costs.
Innovation Solution
A system utilizing a UV light source and a white light source, combined with an image acquiring device and a controller, allows for both automatic and manual currency verification with fewer sensors, using a micro-switch and pause switch to control the light sources and display images for enhanced authenticity judgment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors are installed inside the banknote detector, then the detection capability is enhanced, but the device complexity increases and reliability decreases
Solution Approach 1:
The patent extracts the detection function from multiple separate sensors and consolidates it into a single sensor that receives combined signals from both UV and white light sources. This reduces the number of sensors from more than ten to just one, thereby reducing device complexity while maintaining detection capability through the integrated signal processing approach.
Solution Approach 2:
The patent merges the detection functions of multiple sensors into a single integrated detection system. The UV light source and white light source both feed signals to a single sensor, combining their detection capabilities. This consolidation reduces the number of components and simplifies the overall device structure while preserving the ability to detect various currency features.
2Measurement precision
If multiple sensors are used for detection, then the detection coverage is improved, but the reliability decreases due to increased fault probability
Solution Approach 1:
The patent removes multiple sensors from the system and replaces them with a single sensor that processes combined optical signals. This extraction of the multi-sensor configuration eliminates the reliability issues associated with multiple components while maintaining comprehensive detection coverage through the integrated signal processing approach.
Solution Approach 2:
The patent uses a single sensor to detect both UV and white light signals, effectively creating a copy of the detection function that can process multiple types of information simultaneously. This single sensor acts as a universal detector that can identify various currency features through different light sources without requiring multiple separate sensing elements.
3Productivity
If the operator relies solely on the banknote detector's judgment, then the operation speed is improved, but the accuracy decreases due to potential misjudgments
Solution Approach 1:
The patent implements a feedback mechanism where the operator receives visual information from a display device showing the detected currency features, and can provide manual verification. This feedback loop allows the operator to review the detector's findings and correct any misjudgments, maintaining both high operation speed through automated detection and high accuracy through operator verification.
Solution Approach 2:
The patent introduces a display device as an intermediary between the sensor and the operator. This intermediary presents the detected information in a visual format that the operator can review and interpret, enabling manual verification without significantly slowing down the overall detection process. The display device serves as a mediator that bridges automated detection and human judgment.
4Measurement precision
If more sensors are installed to improve detection accuracy, then the measurement precision is improved, but the ease of repair worsens
Solution Approach 1:
The patent extracts the detection function from multiple sensors and consolidates it into a single sensor system. This extraction dramatically simplifies the system architecture, making it much easier to repair and maintain. With only one sensor instead of more than ten, any potential failures are fewer in number and easier to diagnose and repair.
Solution Approach 2:
The patent merges multiple detection functions into a single integrated sensor system. This consolidation reduces the number of components that can fail, thereby improving ease of repair. The unified sensor design simplifies maintenance procedures and reduces the time required to diagnose and fix issues compared to systems with multiple separate sensors.
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 improves the accuracy and reliability of banknote detection by providing clearer currency images and allowing for dual verification methods, reducing sensor-related faults and maintenance, while enabling operators to verify authenticity manually even if automatic judgment fails.
Implementation Method 1
the UV light source fluoroscopy the currency
Data Source
AI summary
A method and system for detecting currency, relates to banknote detectors, to solve the problem of accuracy rate causes the banknote detectors can not be used. The system includes a UV light source, a white light source, an image acquiring device, a controller, and a prompting device. The white light source and the UV light source are faced to each other. A currency detecting channel is formed between the white light source and the UV light source. A micro-switch and a pause switch are located on a controlling loop of the UV light source. A trigger of the micro-switch is located in the currency detecting channel. The pause switch and the micro-switch are in series connection. The image acquiring device and the white light source are located at a same side of the currency detecting channel. The image acquiring device outputs a currency image to a display device.