Bill Feeder Dynamics for Discrimination Reliability
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Solution Overview
Problem
Conventional bill depositing/withdrawing machines often fail to discriminate all bills when multiple abnormal bills are inserted, leading to undiscriminated bills being returned to the deposit slot along with abnormal ones.
Innovation Solution
A bill depositing/withdrawing machine with a feeder, discriminator, accumulator, identification information reader, and controller that accumulates undiscriminated bills with abnormal ones, and adjusts the feeding method based on stored identification information to ensure all bills are discriminated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If bills are continuously fed from the bill inlet section to the discriminator, then processing speed is improved, but undiscriminated bills remain in the system when abnormal bills are detected
Solution Approach 1:
The patent applies dynamics by making the feeding mode adjustable between continuous and intermittent based on real-time discrimination results. The controller dynamically switches the feeder's operation mode: when no abnormal bills are detected, continuous feeding maintains high productivity; when abnormal bills are detected, the system switches to intermittent feeding to ensure complete discrimination of all bills, thus resolving the contradiction between processing speed and discrimination completeness.
Solution Approach 2:
The patent implements feedback by using the discriminator's detection results to control the feeder's operation. The controller receives information about abnormal bills from the discriminator and adjusts the feeding mode accordingly. This closed-loop control ensures that the system automatically adapts its processing mode to maintain both efficiency and completeness of discrimination.
2Productivity
If the feeder continuously feeds bills to the conveyance channel, then processing efficiency is improved, but abnormal bills and undiscriminated bills cannot be properly separated
Solution Approach 1:
The system dynamically adjusts the feeding mode based on discrimination results. When abnormal bills are detected, the controller switches from continuous to intermittent feeding, allowing the system to prioritize discrimination accuracy over processing speed temporarily, ensuring that all bills are properly examined before resuming high-speed processing.
Solution Approach 2:
The patent maintains continuity of useful action by switching between continuous and intermittent feeding modes rather than stopping entirely. The intermittent mode allows discrimination to catch up and ensure accuracy while still maintaining a continuous processing flow, preventing complete interruption of the beneficial continuous action while ensuring accuracy requirements are met.
3Device complexity
If no separator is provided in the deposit/withdrawal slot, then device complexity is reduced, but returned bills are continuously fed again without being differentiated from other bills
Solution Approach 1:
The patent extracts the discrimination function from the physical separator concept and implements it through the controller and feeder system. Instead of adding a complex mechanical separator structure to physically divide bills, the system uses intelligent control to manage the feeding sequence, tracking which bills have been discriminated and ensuring they are not re-fed, thereby achieving the same reliability goal with simpler device structure.
Solution Approach 2:
The patent replaces the proposed mechanical separator system with a control-based solution. The controller tracks bill discrimination status and manages the feeder's operation to prevent re-feeding of already discriminated bills, substituting mechanical complexity with electronic control and software logic to achieve the same functional outcome.
Data Source
AI summary
Bills are fed from a customer serving section to a discriminator according to continuous feeding, and the discriminator reads identification information of the bills to store the identification information in an identification information storage. When the discriminator discriminates a bill, it determines whether or not the same identification information as the identification information of the bill is stored in the identification information storage. If the same identification information is stored, the customer serving section feeds the bills to the discriminator according to intermittent feeding. This prevents any bill from being undiscriminated.