Paper Sheet Handling with Adaptive Displacement References for Taped Notes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing paper sheet handling apparatuses, such as bill handling machines, face challenges in accurately determining the presence of taped notes due to variations in thickness detection, leading to inaccuracies in distinguishing between single sheets, double-fed sheets, and sheets with applied tape.
Innovation Solution
A paper sheet handling apparatus equipped with a displacement amount detector that measures the displacement of a pressing part relative to the thickness of sheets, utilizing a reference displacement amount storage, paper sheet thickness storage, and tape thickness threshold storage to accurately differentiate between single sheets, double-fed sheets, and taped sheets by updating these values based on detected displacement amounts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a thickness detection means is used to determine taped notes, then the determination accuracy is improved, but the system becomes dependent on the performance of the thickness detection means and cannot account for temporal variations in detection accuracy
Solution Approach 1:
The system detects the actual thickness of paper sheets during handling and feeds this information back to update the reference thickness values stored in memory. This feedback mechanism allows the system to adapt to temporal variations in the detection means performance and maintain accurate determination of taped notes over time
Solution Approach 2:
The system dynamically changes the reference thickness parameters by updating them based on actual measurements. Instead of using fixed reference values, the system adjusts these parameters to reflect current detection conditions, thereby maintaining measurement precision despite variations in detection means performance
2Device complexity
If fixed reference values are used for thickness detection, then the system structure is simple, but the accuracy deteriorates due to temporal variations in the displacement detection system
Solution Approach 1:
The system performs preliminary thickness measurements on known single sheets and double sheets to establish updated reference values before proceeding with taped note determination. This preliminary action ensures that the reference values are current and accurate, compensating for temporal variations without requiring complex real-time adjustments
Solution Approach 2:
The system automatically updates its own reference values using measurements taken during normal operation. By serving itself with current reference data, the system maintains measurement precision without requiring external calibration equipment or complex manual adjustment mechanisms
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
Ensures precise identification of taped notes and double-fed sheets, enhancing the accuracy of bill handling processes by continuously updating reference values to account for temporal variations in the displacement detection system.
Implementation Method 1
a displacement amount detector that includes a pressing part intended to press a paper sheet against a transporting face of a paper sheet transporting path and having an initial position at which the pressing part is not in contact with the transporting face of the paper sheet transporting path, the displacement amount detector detecting a displacement amount of displacement of the pressing part from the initial position in a direction perpendicular to the transporting face, the pressing part being displaced according to a thickness of a paper sheet passing between the transporting face and the pressing part
Data Source
AI summary
A paper sheet handling apparatus includes: a displacement amount detector that includes a pressing part intended to press a paper sheet against a transporting face of a paper sheet transporting path and having an initial position at which the pressing part is not in contact with the transporting face of the paper sheet transporting path, the displacement amount detector detecting a displacement amount of displacement of the pressing part from the initial position in a direction perpendicular to the transporting face, the pressing part being displaced according to a thickness of a paper sheet passing between the transporting face and the pressing part; a reference displacement amount storage; a paper sheet thickness storage; and a tape thickness threshold storage.