Sound-Based Paper Jam Detection and Automatic Recovery
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Solution Overview
Problem
In paper conveying apparatuses, jam detection often requires manual intervention by users, which is cumbersome and time-consuming, especially when jams occur, leading to user frustration and potential paper damage.
Innovation Solution
A paper conveying apparatus equipped with a sound signal generator, sound jam detector, control module, and recovery processing module that automatically detects jams based on sound signals and resumes paper conveyance after determining the paper state, reducing user intervention and minimizing paper damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If automatic recovery processing is implemented, then user friendliness and productivity are improved, but device complexity increases
Solution Approach 1:
The recovery processing module divides the recovery operation into distinct sequential steps: detecting paper state, determining recovery feasibility, executing recovery actions, and verifying results. This segmentation allows the complex automatic recovery function to be managed through modular, independent sub-functions that can be implemented and maintained separately.
Solution Approach 2:
The paper state detector acts as an intermediary component between the jam detection system and the recovery execution system. It provides critical information about the paper's physical state (position, orientation, damage level) that enables the control unit to make intelligent decisions about whether and how to perform automatic recovery, bridging the gap between detection and action.
2Loss of time
If automatic recovery processing is implemented, then loss of time is reduced, but device complexity increases
Solution Approach 1:
The system performs preliminary detection of the paper state immediately upon jam detection, before attempting recovery. This preliminary action includes assessing paper position, orientation, and potential damage, which allows the system to prepare the appropriate recovery strategy in advance, reducing the overall recovery time when the jam is resolved.
Solution Approach 2:
The automatic recovery processing maintains continuous monitoring and adjustment during the recovery operation. The control unit continuously assesses paper state changes and adjusts recovery actions in real-time, ensuring the recovery process proceeds without unnecessary interruptions or delays, thereby minimizing total recovery time.
3Productivity
If sound-based jam detection is used, then productivity is improved, but measurement precision may be affected by environmental factors
Solution Approach 1:
The system incorporates feedback mechanisms where the sound signal characteristics are continuously monitored and compared against reference patterns. When environmental noise levels change or interfere with detection, the system can adjust its detection thresholds and parameters based on the feedback from ongoing sound analysis, maintaining detection accuracy despite varying environmental conditions.
Solution Approach 2:
The sound signal generator and detector are designed to serve multiple functions: detecting paper jams, assessing paper state during recovery, and monitoring conveyance abnormalities. This multi-functionality allows the same acoustic sensing system to adapt to different detection needs by analyzing different characteristics of the sound signals, improving both productivity and precision across various operational scenarios.
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 apparatus improves user friendliness by automating the recovery process, reducing paper damage and simplifying the recovery workflow, allowing for efficient and quick resumption of paper conveyance after jam detection.
Implementation Method 1
a sound signal generator for generating a sound signal
Implementation Method 2
a sound jam detector for determining whether a jam has occurred based on the sound signal
Data Source
AI summary
There are provided a paper conveying apparatus, a jam detection method and a computer-readable, non-transitory medium that can improve the user friendliness in the recovery processing when determining that a jam has occurred during conveyance of a paper. The paper conveying apparatus includes a sound signal generator for generating a sound signal, a sound jam detector for determining whether a jam has occurred based on the sound signal, a control module for stopping conveyance of a paper when the sound jam detector determines that the jam has occurred, a paper state detector for detecting a state of the paper, and a recovery processing module for automatically performing a recovery processing which resumes conveyance of the paper in accordance with a content of the detection of the paper state detector after stopping the conveyance of the paper by the control module.