Elevator Radio Wave Detection for Automatic Emergency Notification
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Solution Overview
Problem
Individuals, such as children, wheelchair users, or those incapacitated by a disaster, cannot notify the outside of being trapped in an elevator due to the emergency call button's inaccessible location within the elevator car.
Innovation Solution
A reporting device and system that includes a detection unit in the elevator to sense radio waves from mobile terminals, automatically triggering a report to an external monitoring system when an emergency stop occurs, allowing for notification without the need to press the emergency call button.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the emergency call button is provided in the upper part of the operation panel, then the button is easily accessible for most users, but children, wheelchair users, or incapacitated persons cannot press it to notify being trapped
Solution Approach 1:
The system automatically detects the presence of a mobile terminal in the elevator car and triggers notification without requiring any action from the trapped person. The detection device senses radio waves from the mobile terminal, and the control device automatically generates and transmits alarm signals to the monitoring center, making the notification system self-activating rather than requiring manual operation.
Solution Approach 2:
The patent replaces the mechanical button-pressing system with an automatic detection system using radio wave sensing. Instead of requiring physical contact with the emergency call button, the detection device uses electromagnetic radiation detection to sense the presence of a mobile terminal, thereby substituting mechanical operation with automated electronic detection.
2Reliability
If an automatic detection system using radio waves is implemented, then notification is possible without pressing the button, but the device complexity increases
Solution Approach 1:
The control device performs multiple functions: it controls elevator operation, manages communication between the operation panel and monitoring center, and now also functions as the reporting device that receives detection signals and transmits alarm information. This multi-functionality reduces the need for separate dedicated components and simplifies the overall system architecture.
Solution Approach 2:
The detection device acts as an intermediary between the trapped person's mobile terminal and the control device. It senses radio waves from the mobile terminal and converts this detection into a signal that the control device can process, thereby mediating between the automatic detection requirement and the existing elevator control system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables individuals trapped in an elevator to be automatically reported to the outside, even if they cannot access the emergency call button, ensuring timely assistance during emergencies like earthquakes or power outages.
Implementation Method 1
a detection device that is installed in the elevator and senses a radio wave emitted by a mobile terminal
Data Source
AI summary
A reporting device 1 includes: a starting unit 12 that when emergently stopping an elevator, starts a detection device 3 that is installed in the elevator and senses a radio wave emitted by a mobile terminal 5; a reception unit 13 that receives from the detection device 3 a sensing signal indicating that a radio wave from the mobile terminal 5 has been sensed; and a reporting unit 14 that makes a report to an external system 7 when the reception unit 12 receives the sensing signal.