Foldable Electronic Display with Automatic Switch Lockout
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Solution Overview
Problem
Current electronic message signs for traffic control are cumbersome, require lengthy setup times, and lack the ability to be quickly deployed or customized for emergency situations, posing safety risks for responders and citizens due to their complexity, size, and restrictive mounting schemes.
Innovation Solution
A foldable electronic display device with multiple panels that can be easily set up by one person, featuring a flexible mounting system, on-board control software lockout for security, and a daisy chain wiring harness to protect cabling, allowing for quick deployment and customization of messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional electronic message signs are used, then messages can be displayed to the public, but the setup time is lengthy and the device is cumbersome
Solution Approach 1:
The electronic message sign is divided into multiple foldable panels that can be collapsed into a compact configuration for rapid transport and deployment. The panels are connected through hinges allowing the sign to be folded into a small package that can be quickly set up by one person, eliminating the need for complex assembly procedures.
Solution Approach 2:
The message sign incorporates a dynamic mounting system that allows the panels to transition between folded and unfolded states. The hinges and mounting brackets enable rapid deployment from a compact stored position to an operational display position, reducing setup time while maintaining structural integrity.
2Adaptability or versatility
If traditional message signs are used, then messages can be displayed, but the mounting options are restrictive and require specific locations
Solution Approach 1:
The message sign is designed with universal mounting capabilities that allow it to be attached to various surfaces and structures including vehicles, poles, and temporary barriers. The mounting brackets can be configured for different orientations and locations, providing versatility in deployment options without requiring specialized installation procedures.
Solution Approach 2:
The mounting system incorporates adjustable and reconfigurable elements that allow the sign to be easily installed and repositioned. The dynamic mounting brackets can accommodate different mounting scenarios, enabling rapid deployment at various locations without permanent installation requirements.
3Ease of operation
If on-board controls are made accessible for quick message changes, then message customization is improved, but unauthorized access and tampering become possible
Solution Approach 1:
The system includes pre-programmed emergency messages stored in memory that can be automatically displayed without requiring user input. In emergency situations, these pre-configured messages provide immediate communication capability, eliminating the need for complex programming during time-critical events while maintaining security through automatic activation protocols.
Solution Approach 2:
The control system incorporates authentication feedback mechanisms that verify user credentials before allowing message programming. The system provides immediate feedback on access attempts, locking out unauthorized users while allowing authenticated personnel to program messages. This feedback loop maintains security while enabling legitimate message changes when needed.
Data Source
AI summary
A portable electronic display device includes an electronic display surface having at least one display panel that displays a graphical and/or textual message, memory that stores a plurality of the messages, and one or more switches on the device that allow user selection of one of the messages. The device further includes a controller that disables the one or more switches if none of the switches are selected after a predetermined period of time after power is turned on to the display device, or if none of the switches are selected after a predetermined period of time subsequent to the last switch selection occurrence. In this manner, a person is prevented from subsequently changing the message via the one or more switches.