Elevator Hall Call Registration During Evacuation Completion
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Solution Overview
Problem
In conventional elevator systems during emergencies, evacuees cannot register a hall call after the evacuation guide completes the rescue operation and cancels the car shuttle mode, leaving late-arriving individuals without a means to request evacuation.
Innovation Solution
An elevator system with key switches at each hall for selecting shuttle or evacuation completion modes, a notification system in the car, and an elevator controller that validates hall calls from evacuation completion floors, allowing late-arriving evacuees to register and notify guides of remaining individuals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the evacuation guide cancels the car shuttle operation mode after completing rescue operation, then the evacuation guide can leave the rescue floor, but late-arriving evacuees cannot register hall calls
Solution Approach 1:
The system dynamically changes the operational status of hall buttons based on the key switch mode. When in evacuation completion mode, hall buttons at evacuation completion floors are enabled for late-arriving evacuees, while maintaining the cancellation of shuttle operation. This dynamic adaptation allows the system to serve different user needs at different times without requiring manual reconfiguration.
Solution Approach 2:
The notification means in the car provides feedback to the evacuation guide about which floor has a late-arriving evacuee. This feedback mechanism allows the evacuation guide to be informed of the situation and take appropriate action, creating a closed-loop control system that adapts to changing evacuation conditions.
2Adaptability or versatility
If the hall button is enabled after evacuation completion mode is selected, then late-arriving evacuees can register hall calls, but the system complexity increases
Solution Approach 1:
The key switch serves multiple functions: it not only controls the shuttle operation mode but also determines the operational status of hall buttons. By making the key switch a multi-functional control element, the system avoids adding separate control mechanisms, thereby limiting the increase in device complexity while achieving the desired adaptability.
Solution Approach 2:
The system merges the control of shuttle operation and hall button availability into a single key switch mechanism. This consolidation reduces the number of independent control elements and simplifies the overall system architecture, preventing excessive complexity increase while maintaining the ability to handle late-arriving evacuees.
3Loss of information
If the notification means notifies the evacuation completion floor, then the evacuation guide can locate remaining evacuees, but energy consumption increases
Solution Approach 1:
The notification means operates periodically or on-demand rather than continuously, notifying the evacuation guide only when a hall button is pressed or when there is new information about late-arriving evacuees. This periodic operation significantly reduces energy consumption compared to continuous notification while ensuring that critical information is conveyed to the evacuation guide.
Solution Approach 2:
The system uses the existing notification infrastructure within the elevator car rather than adding a separate dedicated notification system. By repurposing existing components for the additional function of notifying about evacuation completion floors, the energy consumption increase is minimized while still providing the necessary information to the evacuation guide.
Data Source
AI summary
An elevator system includes: key switches, provided at a hall, used in an evacuation operation to select either a shuttle operation request mode requesting a car to shuttle between an evacuation floor and a rescue floor, or an evacuation completion mode indicating completion of evacuation; a first notification mechanism provided in the car; and an elevator controller switching between normal operation and the evacuation operation, determining, in a case at least one of the key switches is switched to the evacuation operation, that a floor at a hall whose key switch is in the shuttle operation mode is a rescue floor and a floor at a hall whose key switch is in the evacuation completion mode is an evacuation completion floor, and making, in a case a hall button provided at the hall of the evacuation completion floor is operated, the first notification mechanism notify of the evacuation completion floor.