Paper Jam Detection via Speed-Adaptive Sound Signal Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing paper conveying apparatuses face challenges in accurately detecting paper jams across varying conveyance speeds, as the sound generated during paper movement differs with speed, leading to inconsistent jam detection methods.
Innovation Solution
A paper conveying apparatus and method that includes a sound signal generator, corrected signal generator, and sound jam detector, where the corrected signal is generated based on conveyance speed information to determine jam occurrence, setting the sampling rate or attenuation rate in accordance with the conveyance speed to maintain consistent detection across different speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed jam detection method is used, then the detection process is simple, but detection accuracy deteriorates when conveyance speed varies
Solution Approach 1:
The patent applies dynamics by making the jam detection parameters variable rather than fixed. The corrected signal generator dynamically adjusts the sampling rate and attenuation rate based on the paper conveyance speed. When conveyance speed changes, the system automatically modifies detection parameters to maintain optimal performance, thereby achieving high detection accuracy across varying speeds without requiring multiple fixed detection methods.
Solution Approach 2:
The patent implements parameter changes by modifying the sampling rate and attenuation rate of the sound signal based on conveyance speed information. The corrected signal generator changes these parameters in real-time according to the actual paper speed, allowing the jam detection system to adapt to different conveyance conditions and maintain consistent detection accuracy across the entire speed range.
2Loss of time
If the sampling rate is increased to improve detection speed, then response time improves, but energy consumption increases
Solution Approach 1:
The system dynamically adjusts the sampling rate based on actual conveyance speed rather than using a constant high sampling rate. When paper moves at normal speed, the system uses appropriate sampling rates that balance detection responsiveness with energy efficiency. The sampling rate is only increased when necessary (e.g., when speed changes are detected), avoiding continuous high energy consumption while maintaining fast response capability when needed.
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
Enables precise detection of paper jams regardless of conveyance speed, improving detection accuracy and reducing the need for parameter adjustments specific to each speed, thus enhancing operational efficiency.
Implementation Method 1
a sound signal generator for generating a sound signal corresponding to a sound generated by a paper during conveyance of the paper
Data Source
AI summary
There are provided a paper conveying apparatus, a jam detection method and a computer-readable, non-transitory medium which can precisely determine any occurrence of a jam by a sound regardless of the conveyance speed of the paper. The paper conveying apparatus includes a sound signal generator for generating a sound signal corresponding to a sound generated by a paper during conveyance of the paper, a corrected signal generator for correcting the sound signal to generate a corrected signal, and a sound jam detector for determining whether a jam has occurred based on the corrected signal, wherein the corrected signal generator sets a method of correcting the sound signal in accordance with conveyance speed information.