Coin Processing Device Position-Based Material Data Correction
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Solution Overview
Problem
Coin processing devices face a drop in identification accuracy when the passage width of the conveying unit is adjustable, due to insufficient adjustment accuracy of the guide walls, leading to inaccurate coin denomination detection.
Innovation Solution
A coin processing device equipped with first and second material sensors and position sensors, where the position sensors align with the material sensors in the conveyance direction, and a correcting unit that uses position detection data to correct material detection data, ensuring accurate identification by adjusting for the actual passage width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the passage width of the conveying unit is adjusted to accommodate different denominations, then the adaptability of the device is improved, but the identification accuracy deteriorates due to insufficient adjustment accuracy of the guide walls
Solution Approach 1:
The patent changes the parameter of passage width by adjusting the interval between guide walls to accommodate different coin denominations. The correcting unit then compensates for adjustment inaccuracies by calculating correction values based on position sensor data and applying them to material sensor readings, thereby maintaining identification accuracy across different passage width configurations
Solution Approach 2:
The patent implements a feedback mechanism where position sensors detect the actual position of coins in the passage width direction, and this information is fed back to the correcting unit. The correcting unit uses this feedback to calculate correction values that compensate for guide wall adjustment inaccuracies, thereby maintaining accurate coin identification despite variations in passage width
2Adaptability or versatility
If the interval between guide walls is adjusted for different denominations, then the device can process multiple denominations, but the adjustment accuracy is insufficient leading to detection errors
Solution Approach 1:
The patent replaces reliance on purely mechanical adjustment accuracy with a sensor-based detection and correction system. Position sensors optically detect coin positions, and the correcting unit computationally determines adjustment correction values, substituting mechanical precision requirements with electronic measurement and calculation
3Reliability
If material sensors are used to detect coin material for identification, then the identification function is achieved, but position variations cause detection data inaccuracies
Solution Approach 1:
The patent introduces position sensors as an intermediary that measures the actual position of coins relative to the material sensors. This intermediary measurement allows the correcting unit to calculate position-based correction values that compensate for misalignment between the coin and material sensor, thereby improving detection data accuracy
Data Source
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AI summary
A coin processing device includes: a conveying unit that conveys a coin in a conveyance direction; first and second material sensors detect material of the conveyed coin to obtain material detection data; first and second position sensors detect a position of the conveyed coin to obtain position detection data; a correcting unit that corrects the material detection data based on the position detection data to obtain corrected material detection data; and an identifying unit that identifies the conveyed coin based on the corrected material detection data.