Coin-roll handling device denomination detection
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Solution Overview
Problem
Existing coin-roll handling devices face challenges in accurately determining the denomination of coin rolls, especially when coins from different countries have similar diameters, leading to complexity and high costs due to the need for multiple photo-interrupters and insufficient storage volume.
Innovation Solution
A coin-roll handling device with a transporting unit that detects both the diameter and material of coin rolls using a detecting lever, angle sensor, and impedance characteristics, allowing for reliable denomination determination by a denomination determining unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a plurality of photo-interrupters is installed to detect the diameter of coin rolls in each storage unit, then the detection accuracy is improved, but the device complexity and cost increase
Solution Approach 1:
A single photo-interrupter is used to detect multiple parameters (diameter, material, quantity) of coin rolls across different storage units. The photo-interrupter serves universal detection functions by measuring light absorption characteristics that vary with coin roll properties, eliminating the need for separate detectors for each storage unit while maintaining detection accuracy.
Solution Approach 2:
The system detects coin roll characteristics by measuring changes in light absorption parameters. Different coin materials and diameters produce distinct light absorption signatures, allowing the single photo-interrupter to differentiate between various coin roll types by analyzing the transmitted light intensity and spectral characteristics.
2Device complexity
If a single row storage configuration is used in each storage unit, then the device structure is simplified, but the storage volume becomes insufficient
Solution Approach 1:
The storage units transition from single-row linear configuration to multi-layer three-dimensional arrangement. Coin rolls are stacked vertically in multiple layers within each storage unit, utilizing the vertical dimension to dramatically increase storage capacity while maintaining a compact footprint and relatively simple structural design.
3Adaptability or versatility
If photo-interrupters are used to detect coin roll characteristics when multiple rolls are stacked in several layers, then the detection capability is extended, but the detection accuracy deteriorates due to overlapping rolls
Solution Approach 1:
The system performs preliminary detection by measuring light absorption characteristics before the coin roll reaches the ejection position. The photo-interrupter detects the presence, material, and diameter of coin rolls in the detection zone, allowing the control unit to identify and eject only the desired denomination while rejecting others, thereby maintaining high detection accuracy even with stacked rolls.
Solution Approach 2:
Light serves as an intermediary medium to detect coin roll characteristics indirectly. The photo-interrupter measures light transmission through the coin rolls, and the control unit analyzes the absorption patterns to determine coin material and diameter without requiring direct physical contact or visual inspection of each individual roll in the stack.
4Measurement precision
If the detecting lever displacement is directly transmitted to the encoder to detect coin roll diameter, then the measurement precision is improved, but the component cost and assembly difficulty increase
Solution Approach 1:
The system replaces complex mechanical transmission mechanisms with a simplified detection system. Instead of using a detecting lever with mechanical displacement transmission to an encoder, the invention uses a photo-interrupter that optically detects coin roll characteristics, eliminating the need for mechanical linkages and reducing assembly complexity while maintaining measurement precision.
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 quick and accurate denomination identification of coin rolls, reducing complexity and cost by using a single system capable of handling rolls with varying materials and diameters, and improving storage efficiency.
Implementation Method 1
a magnet that rotates integrally with the detecting lever, and an angle sensor that detects a rotational angle of the detecting lever when the roll of coins being transported by the transporting unit comes into contact with the detecting lever
Implementation Method 2
an impedance sensor that detects a roll of coins being transported by the transporting unit and changes in impedance characteristics of a coil circuit when the roll of coins passes through the coil circuit
Data Source
AI summary
A coin-roll handling device includes a coin-roll characteristic-value detecting unit 50 configured to detect at least one of a first characteristic value relating to a diameter of a roll of coins being transported by a transporting unit 40 and a second characteristic value relating to a material of the roll of coins being transported by the transporting unit 40, provided downstream of a storage unit 10 in a transportation direction of the roll of coins by the transporting unit 40 and a denomination determining unit 92 configured to determine a denomination of the roll of coins based on at least one of the first characteristic value relating to the diameter of the roll of coins and the second characteristic value relating to the material of the roll of coins detected by the coin-roll characteristic-value detecting unit 50.