Elevator Hall Destination Input Device Emergency Door Control
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Solution Overview
Problem
Existing hall destination floor input devices for elevators do not consider emergency scenarios, specifically failing to check if a user is trapped in a car on an evacuation floor with the door closed during emergencies.
Innovation Solution
A hall destination floor input device with an information input unit, signal transmission unit, and control unit that, in emergency mode, transmits a signal to open the elevator door on the hall, allowing easy verification of trapped users on evacuation floors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the elevator door remains closed on the evacuation floor during emergency mode, then user safety is maintained by preventing unauthorized access, but the ability to check for trapped users is lost
Solution Approach 1:
The elevator door control system dynamically changes its behavior based on the operation mode. In normal mode, the door remains closed during standby to ensure safety. In emergency mode, when a destination floor input is detected, the system automatically transitions to opening the door to allow rescue personnel to check for trapped users. This dynamic switching resolves the contradiction by adapting the door state to the specific operational context.
2Ease of operation
If the elevator door is opened automatically in emergency mode upon receiving destination floor input, then trapped users can be detected, but normal safety protocols are compromised
Solution Approach 1:
The door opening function is activated locally and specifically only in emergency mode when a destination floor input is detected. The control unit distinguishes between normal operation and emergency operation, applying different door control policies to each context. This localized application of the door opening function ensures that safety protocols are maintained in normal operations while enabling trapped user detection when needed.
3Object-affected harmful factors
If the elevator system maintains closed door policy during standby, then security is improved, but emergency rescue capability is reduced
Solution Approach 1:
The elevator door control system serves multiple functions: it maintains security through closed door policy during normal standby operations, and simultaneously provides emergency rescue capability by automatically opening the door when emergency mode is detected and a destination floor input is received. This multi-functionality allows the same system to address both security concerns and emergency rescue needs without requiring separate systems.
Data Source
AI summary
A hall destination floor input device for elevators includes an information input receiver provided on a hall of an elevator on a floor set as an evacuation floor in case of an emergency in a building including the elevator. The information input receiver receives information from outside. The device also includes a signal transmitter that transmits a signal to a control system of the elevator, and a controller configured to cause the signal transmitter to transmit a signal indicating a destination floor of the elevator when the information receiver receives input of information on the destination floor if an operation mode is not an emergency mode based on emergency information of the building, and cause the signal transmitter to transmit a signal to open a door of the elevator on the hall when the information input receiver starts receiving input of information if the operation mode is the emergency mode.