Gap Adjusters for Paper Money Sensor Alignment
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Solution Overview
Problem
The existing paper money discriminating apparatuses in ATMs face challenges in maintaining an optimal gap between the paper money discriminating sensor and the paper money feed rollers, which affects the sensor's sensitivity and accuracy in distinguishing counterfeit money.
Innovation Solution
A structure featuring gap adjusters that rotate about a hinge shaft to adjust the gap between the sensor and the feed rollers, utilizing bearings and supporting springs to maintain a consistent distance of 0.1 to 0.2 mm, ensuring accurate discrimination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the gap between the sensor and feed rollers is not precisely adjusted, then the structure is simpler, but the measurement precision of counterfeit money detection deteriorates
Solution Approach 1:
The patent adjusts the gap parameter between the sensor and feed rollers by rotating the upper body about a hinge shaft to change the positional relationship, thereby optimizing sensor sensitivity while maintaining a manageable structural complexity through controlled parameter variation
Solution Approach 2:
The patent employs a dynamic gap adjustment mechanism where the upper body can rotate about a hinge shaft, allowing the gap between sensor and feed rollers to be adjusted from a fixed state to a variable state, enabling precise control of sensor sensitivity without permanently complicating the structure
2Measurement precision
If the gap between the sensor and feed rollers is too small, then the sensor sensitivity improves, but mechanical resistance increases
Solution Approach 1:
The rotating upper body mechanism enables dynamic adjustment of the gap to an optimal small distance that improves sensor sensitivity while avoiding excessive mechanical resistance, allowing the system to find the optimal balance point between these two opposing forces
Solution Approach 2:
By changing the gap parameter to a specific optimal range through rotation adjustment, the system achieves high sensor sensitivity while maintaining mechanical resistance at acceptable levels, resolving the trade-off between these two parameters
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 solution allows for precise adjustment of the gap, enhancing the sensitivity and accuracy of the paper money discriminating sensor, enabling effective detection of counterfeit bills without mechanical resistance.
Implementation Method 1
each of the bearings may come in contact with a supporting spring at a lower portion thereof, so that an elastic force is applied to the bearing
Data Source
AI summary
A structure adjusts a gap between a paper money discriminating sensor and paper money feed rollers in a paper money discriminating apparatus. The structure includes a lower body and an upper body upwardly rotating about a hinge shaft to open a conveyance path. The structure includes a paper money discriminating sensor that is provided in the upper body and discriminates whether a paper money to be conveyed along the conveyance path is counterfeit money, paper money feed rollers that are rotatably provided in the lower body facing the paper money discriminating sensor and are spaced from each other at a predetermined interval, and gap adjusters that are provided between the paper money discriminating sensor and the paper money feed rollers and adjust a gap between the paper money discriminating sensor and the paper money feed rollers.