Swing Landing Door Warning System for Elevator Safety
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Solution Overview
Problem
Elevator installations with motorized swing landing doors do not adequately allow users to anticipate the opening of the door, potentially causing discomfort or danger for people with reduced mobility who may struggle to quickly move away from the door's opening path.
Innovation Solution
Incorporating an external warning system with light and/or sound signals associated with each swing landing door, activated upon the car's arrival at a level, which provides a time delay before opening the door, and optionally includes an obstacle detection system to only activate the warning if an obstacle is present, ensuring energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If motorized swing landing doors are installed to improve accessibility for people with reduced mobility, then ease of operation is improved, but users cannot anticipate the door opening which creates safety concerns
Solution Approach 1:
The patent applies preliminary action by activating warning devices (visual and/or audible signals) before the door actually opens. The control unit triggers these warning signals when the cabin arrives at the requested level, providing users with advance notice of the impending door opening. This allows people with reduced mobility to prepare and move away from the door's swing zone before the door actually moves, thereby maintaining ease of operation while eliminating the safety hazard of unexpected door opening.
2Object-affected harmful factors
If warning devices are activated continuously to ensure user awareness, then safety is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic action by activating warning devices only at specific moments when needed - namely when the cabin arrives at a requested level and before the door opens. The control unit monitors cabin position and triggers the warning signals only during these critical transition periods rather than keeping them continuously activated. This periodic activation maintains user awareness and safety while significantly reducing energy consumption compared to continuous operation.
Data Source
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AI summary
The invention relates to an elevator installation comprising a drive means, a cabin, and a transmission means, for ensuring cooperation between the drive means and the cabin so as to drive the cabin within a shaft between different levels, each equipped with a motorized swing landing door operated by an actuator, and, for each level served, a cabin call user interface, intended to be installed on the landing corresponding to that level, this interface being in communication with the drive means via a control unit, so as to bring the cabin to said level following a user command on said interface, the control unit being adapted to transmit a door opening command to said actuator following the detection of the cabin's arrival at said level.so as to trigger an opening movement of the corresponding swing landing door by means of the actuator, said installation being characterized in that it comprises at least one external warning device associated with at least one swing landing door, adapted to emit a visual and/or audible warning signal towards the landing and a door opening warning system, configured to generate an activation order for at least one external warning device in response to the detection of the arrival of the cabin at said level.