Paper Sheet Redetection Mechanism for Transparent Polymer Bills
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional paper sheet processing devices struggle to detect polymer bills made of transparent synthetic resin, as the transparent portions can coincide with sensor installation positions, leading to undetected bills, especially when the bill is stopped in the traveling route.
Innovation Solution
The device incorporates a conveyance mechanism and sensors to detect the presence of the paper sheet, with a controller performing a redetection process after the conveyance mechanism stops, ensuring accurate detection by moving the bill to a position where it can be reliably detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a sensor is installed at a fixed position to detect the paper sheet, then the detection structure is simple, but the sensor may fail to detect polymer bills with transparent portions when the transparent portion coincides with the sensor installation position
Solution Approach 1:
The patent applies the dynamics principle by making the sensor installation position variable rather than fixed. The conveyance mechanism moves the paper sheet to different positions during the redetection process, dynamically changing the relative position between the sensor and the paper sheet to ensure detection of transparent portions.
Solution Approach 2:
The patent applies the preliminary action principle by performing a redetection process after the conveyance mechanism has moved the paper sheet. The controller is configured to conduct detection again at a different position to ensure that transparent portions are not missed, preparing for potential detection failures in advance.
2Productivity
If the conveyance mechanism continuously moves the paper sheet, then the processing speed is high, but the sensor cannot accurately detect the presence of the paper sheet at a specific position
Solution Approach 1:
The patent applies the periodic action principle by alternating between movement and detection phases. The conveyance mechanism moves the paper sheet to a new position, then the controller performs detection at that position. This periodic cycle of movement followed by detection ensures both processing continues while accurate detection is achieved at each stage.
Data Source
AI summary
A paper sheet or bill processing apparatus capable of reliably detecting a paper sheet or bill present in a traveling route. The paper sheet or bill processing apparatus includes: a motor for a paper sheet or bill conveyance mechanism which can be driven to convey a paper sheet or bill along a traveling route; a discharge sensor which detects whether or not the paper sheet or bill is present in the traveling route; and control means which carries out a redetection process to detect whether or not the paper sheet or bill is present in the traveling route again by the discharge sensor after the motor is driven if the paper sheet or bill is not detected by the discharge detection sensor in a detection process in a condition that driving of the conveyance mechanism is stopped.