Elevator Mirror Display Adaptive Control for Wheelchair Detection
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Solution Overview
Problem
Existing elevator display systems with mirror functions activate the mirror feature every time the elevator door opens, causing discomfort to general passengers who do not need the assistance, as they are unable to disable the mirror function when a wheelchair user is not present.
Innovation Solution
An elevator display system that includes a sensing device to detect the presence of a wheelchair user, a mirror display device that functions as both a mirror and an image display, and a control unit to selectively enable the mirror function only when a wheelchair user is present, using image recognition and user information to manage the display state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mirror function is enabled every time the elevator door opens to assist wheelchair users, then wheelchair users can safely reverse their wheelchairs, but general passengers experience discomfort due to unnecessary mirror activation
Solution Approach 1:
The system changes the display state parameter of the mirror display device based on detected user conditions. When a wheelchair user is detected, the display switches to mirror mode (first state); when general passengers are detected, it switches to information display mode (second state). This dynamic parameter change resolves the contradiction by adapting the mirror function availability to the actual user needs.
Solution Approach 2:
The system uses a sensing device to continuously monitor the cage interior and provides feedback to the display control unit. Based on this feedback about user presence and type, the system automatically adjusts the mirror display device state. This feedback mechanism ensures the mirror function is activated only when actually needed, eliminating unnecessary activation that causes discomfort to general passengers.
2Adaptability or versatility
If the mirror function is always available in the cage, then any wheelchair user can use it when needed, but general passengers cannot disable it causing discomfort
Solution Approach 1:
The system provides self-service functionality by automatically detecting user type and activating the mirror function only when a wheelchair user is present. The sensing device and control unit work autonomously to determine whether mirror assistance is needed, eliminating the need for manual switching while ensuring the function is available to those who need it without bothering general passengers.
Solution Approach 2:
The display control unit changes the operational parameter of the mirror display device based on detected conditions. The device transitions between first state (mirror function enabled) and second state (information display only) according to the detected user type, providing adaptability while maintaining user comfort.
3Object-affected harmful factors
If the display device switches between mirror mode and information display mode based on user detection, then the mirror function is available only when needed, but the system complexity increases
Solution Approach 1:
The mirror display device serves multiple functions: it acts as a mirror for wheelchair users (first state) and as an information display device for general passengers (second state). This multi-functionality allows a single device to cater to different user needs without requiring separate hardware systems, managing complexity while providing differentiated functionality.
Solution Approach 2:
The display device dynamically switches between two operational states based on real-time detection of user presence and type. The display control unit adjusts the device state in response to changing conditions, enabling the system to adapt to different scenarios without manual intervention while maintaining manageable complexity through automated state transitions.
Data Source
AI summary
An elevator display system includes: a sensing device that acquires sensing data indicating condition of an inside of a cage; a mirror display device arranged in the cage on a side opposite to an elevator door, functions in a first state as a mirror, and functions in a second state as an image display unit; a content generation unit that generates display image data to be displayed on the mirror display device; an in-cage condition judgment unit that judges condition of a user in the cage from the sensing data and outputs user information regarding the condition of the user; and a display control unit that outputs a control signal requesting generation of display image data for setting a display state of a display surface of the mirror display device to the first state or the second state to the display image generation unit based on the user information.