Sheet Discrimination Unit Dynamic Reference Level Adjustment
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Solution Overview
Problem
Conventional sheet processing apparatuses face challenges in setting optimal reference levels to achieve a desired good/bad bill ratio due to varying user requirements and sheet states, necessitating labor-intensive and skill-dependent adjustments.
Innovation Solution
A sheet processing system that includes a data storage unit, decision unit, pick-up unit, convey unit, discrimination unit, and stacking unit, where the discrimination unit detects contamination or damage levels and compares them to set reference values to discriminate between good and bad bills, allowing for dynamic adjustment of reference levels based on user-designated ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If reference levels are set manually by operators over a long period, then the good/bad bill ratio can be adjusted according to user requests, but the process requires human skills and labor hours
Solution Approach 1:
The system automatically sets reference levels by acquiring actual processing results, calculating good/bad bill ratios, and determining optimal reference values without human intervention. The control unit performs self-adjustment based on accumulated data, eliminating the need for manual operator input and reducing labor hours while maintaining adaptability to user requirements
Solution Approach 2:
The system continuously acquires actual processing results and uses this feedback to automatically adjust reference levels. By monitoring the good/bad bill ratio outcomes and feeding this information back to the control unit, the system dynamically optimizes reference values to meet user-requested ratios without requiring manual reconfiguration over time
2Measurement precision
If reference levels are set to attain a desired good/bad bill ratio, then the sorting accuracy improves, but the settings must be adjusted according to varying operation forms and sheet states
Solution Approach 1:
The reference levels are made dynamic rather than static, automatically adjusting according to the actual processing results and current operation conditions. The control unit modifies reference values in real-time based on the accumulated data from different operation forms and sheet states, maintaining high discrimination accuracy across varying conditions without requiring manual reconfiguration for each scenario
3Adaptability or versatility
If manual adjustment of reference levels is performed, then the system can adapt to different user requests, but the complexity of the setting process increases
Solution Approach 1:
The control unit performs self-service by automatically calculating and setting reference levels based on user-requested good/bad bill ratios and actual processing results. This eliminates the need for complex manual adjustment procedures while maintaining full adaptability to different user requests, as the system autonomously handles the complexity of reference level configuration
Data Source
AI summary
A sheet processing machine transmits information indicating a degree of contamination or damage for each sheet detected by a discrimination unit to a teller PC as a discrimination result. The teller PC saves the discrimination result received from the sheet processing machine in a data storage unit. A CPU of the teller PC decides reference levels that can attain good bill ratio designated by the user for respective items required to discriminate good/bad states of a sheet based on the previous discrimination results saved in the data storage unit. The CPU of the teller PC sets the reference levels that can attain the good bill ratio designated by the user in the discrimination unit of the sheet processing machine. The discrimination unit set with such reference levels discriminates good/bad states of sheets based on the reference levels set by the teller PC.