Rollable Display Motion Sensing for Breakage Prevention
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Solution Overview
Problem
Flexible rollable sheet displays are prone to breakage due to external impacts and deformations, lacking effective breakage prevention technologies for outdoor use.
Innovation Solution
An information display apparatus with a mechanical mechanism for deploying and retracting the display, equipped with motion sensors to detect anomalies and a controller that calculates motion information to prevent damage, including the ability to adjust sensor sensitivity and determine anomalies based on acceleration and angular velocity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display section is constantly deployed for outdoor use, then the usability and display space are improved, but the risk of breakage due to external impacts and deformations increases
Solution Approach 1:
The motion sensor detects abnormal motions (impacts, deformations) before they cause breakage, and the controller preemptively stops the mechanical mechanism or retracts the display section. This preliminary detection and response prevents the harmful effects from completing their damage-causing action.
Solution Approach 2:
The motion sensor continuously monitors the display section's motion state and provides feedback to the controller. Based on this feedback, the controller adjusts the operation of the mechanical mechanism in real-time, stopping movement when abnormal motion is detected and resuming when normal conditions are restored.
2Reliability
If a motion sensor and anomaly detection system are added to detect breakage risks, then the reliability and breakage prevention are improved, but the device complexity increases
Solution Approach 1:
The display section itself serves as the sensing element through its interaction with the motion sensor, eliminating the need for separate complex sensing structures. The mechanical mechanism's own movement characteristics are used as the basis for anomaly detection, turning the system's operational parameters into diagnostic information.
3Reliability
If the mechanical mechanism continuously moves the display section between deployed and retracted states to avoid damage, then the breakage prevention is improved, but the loss of time and operational interruptions increase
Solution Approach 1:
The system uses continuous feedback from the motion sensor to determine when abnormal motion occurs and when it has ceased. The controller only stops the mechanical mechanism when abnormal motion is detected, and only retracts the display section when necessary, minimizing operational interruptions while maintaining protection.
Solution Approach 2:
The motion sensor detects abnormal motions before they cause breakage, allowing the controller to stop the mechanical mechanism at the optimal moment. This preliminary detection prevents the need for more aggressive protective actions that would cause greater operational interruptions.
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 system effectively prevents damage to the display by detecting potential breakage scenarios and taking corrective actions, such as stopping movement or turning off the display, thereby extending its lifespan.
Implementation Method 1
a motion sensor that detects a motion of the display section
Implementation Method 2
The motion sensor may be a sensor that detects at least one of acceleration or an angular velocity
Data Source
AI summary
The information display apparatus includes a sheet display section; a mechanical mechanism that moves the display section, and switches a state of the display section between a deployment state in which a display space is formed and a non-deployment state in which the display space is not formed; a motion sensor that detects a motion of the display section; and a controller that calculates, from data of the detection performed by the motion sensor, at least motion information other than a component related to the movement of the display section that is performed by the mechanical mechanism, and determines an anomaly.