Sheet Conveyance Sound Detection for Jam Positioning
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Solution Overview
Problem
Existing sheet conveying devices struggle to accurately detect and locate the position of abnormal conveyance factors, such as stapled portions, during the conveyance of sheets, leading to inefficiencies in handling paper jams.
Innovation Solution
A sheet conveying device equipped with a conveyor, a sound collector, an operation unit, and circuitry that collects sound produced during sheet conveyance, detects abnormal conveyance factors based on the collected sound, and outputs the position of these factors to the operation unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sound collection is used to detect abnormal conveyance factors, then detection capability is improved, but the ability to locate the position of these factors remains insufficient
Solution Approach 1:
The sheet conveyance path is divided into multiple detection zones, each monitored by sound collection units at different positions. By segmenting the detection area and analyzing sound characteristics from different zones, the system can both detect the presence of abnormal factors and determine their specific locations along the conveyance path.
Solution Approach 2:
Sound waves serve as an intermediary medium to carry information about both the presence and position of abnormal conveyance factors. The sound collection units capture these acoustic signals, which inherently contain spatial information that can be processed to locate the source of abnormalities without requiring direct physical contact or additional positioning hardware.
2Measurement precision
If multiple sound collectors are deployed to improve detection accuracy, then device complexity increases
Solution Approach 1:
The sound collection units serve multiple functions simultaneously: they detect the presence of abnormal conveyance factors, determine the location of these factors along the conveyance path, and provide information for both real-time monitoring and diagnostic purposes. This multi-functionality reduces the need for separate detection and positioning systems, thereby limiting the increase in device complexity.
3Productivity
If sound-based detection is implemented, then paper jam handling efficiency is improved, but sheet damage may occur during conveyance
Solution Approach 1:
The sound collection system detects abnormal conveyance factors such as stapled portions or bound documents before they cause actual paper jams or sheet damage. By identifying these issues early in the conveyance process, the system can alert operators to remove the problematic documents, preventing subsequent paper jams and eliminating the need for forceful jam-clearing operations that could damage sheets.
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
The device effectively detects and locates abnormal conveyance factors, enabling timely intervention to prevent sheet damage and enhance the efficiency of paper jam handling.
Implementation Method 1
The sound collector collects sound produced by conveying the sheet by the conveyor
Data Source
AI summary
A sheet conveying device includes a conveyor, a sound collector, an operation unit, and circuitry. The conveyor conveys a sheet in a sheet conveyance direction. The sound collector collects sound produced by conveying the sheet by the conveyor. The operation unit outputs information of a conveyance of the sheet. The circuitry is to cause the sound collector to collect the sound, detect a factor of an abnormal conveyance produced by conveying the sheet based on the sound collected by the sound collector, locate a position of the factor of the abnormal conveyance of the sheet in response to a detection of the factor of the abnormal conveyance of the sheet, and output, to the operation unit, the position of the factor of the abnormal conveyance of the sheet.