Image Reading Apparatus Cable Abnormality Detection
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Solution Overview
Problem
Existing image reading apparatuses face challenges in accurately detecting contact failures in signal transmission cables, particularly when the cables are bent, leading to communication abnormalities that are difficult to diagnose remotely, resulting in increased maintenance costs and reduced productivity.
Innovation Solution
The apparatus includes an image reading unit, an image reading controller, a signal transmission cable, and a drive portion that moves the image reading unit to change the cable's bending state, allowing the controller to generate and detect image signals based on predetermined patterns to identify abnormalities in the cable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a signal transmission cable is bent during scanning operation, then the apparatus can perform image reading, but contact failure of the cable cannot be accurately detected
Solution Approach 1:
The system performs preliminary abnormality determination by acquiring image signals at multiple predetermined positions before normal operation. This allows the apparatus to establish a baseline of normal signal characteristics, enabling accurate detection of abnormalities during actual scanning operations without interfering with productivity.
Solution Approach 2:
The controller acts as an intermediary that acquires image signals through the cable at multiple positions and compares them to determine abnormalities. This intermediary measurement process enables indirect detection of cable contact failures by analyzing signal consistency across different bending states, solving the problem of direct detection difficulty.
2Reliability
If the signal transmission cable is moved to change bending state for inspection, then disconnection can be detected, but maintenance time increases
Solution Approach 1:
The system automatically performs preliminary inspections at multiple predetermined positions during initialization or idle periods. By pre-acquiring image signals at various cable bending states, the system establishes normal signal patterns in advance, enabling rapid abnormality determination during operation without requiring manual intervention or extended inspection time.
Solution Approach 2:
The apparatus performs self-diagnosis by automatically acquiring and comparing image signals at multiple positions. The controller independently determines cable abnormalities without requiring external inspection tools or manual cable manipulation, reducing maintenance time and enabling the system to service itself.
3Ease of operation
If image signal variation is used for abnormality determination, then detection can be performed, but accuracy decreases due to signal variability
Solution Approach 1:
The system acquires multiple image signals at predetermined positions before operation to establish baseline characteristics. By comparing signals acquired at different positions during normal operation against these predetermined patterns, the system can distinguish between normal signal variations due to cable bending and actual abnormalities, significantly improving detection accuracy despite signal variability.
Solution Approach 2:
The controller continuously monitors image signals and compares them against predetermined patterns, providing feedback on cable status. This feedback mechanism allows the system to adapt to normal signal variations while maintaining high precision in abnormality detection by recognizing deviations from expected patterns.
Data Source
AI summary
An image reading apparatus, including: an image reading unit configured to read an image of an original; an image reading controller configured to control the image reading unit; a signal transmission cable configured to connect the image reading unit and the image reading controller; a drive portion configured to move the image reading unit; and an image signal generation portion, provided in the image reading unit, configured to generate an image signal based on a predetermined pattern, wherein the image reading controller is configured to obtain, through the signal transmission cable, the image signal output from the image signal generation portion while causing the drive portion to move the image reading unit to change a bending state of the signal transmission cable, and to detect whether there is an abnormality in the signal transmission cable based on a pattern of the image signal obtained by the image reading controller.