Elevator Passenger Detection for Automatic Door Closing
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Solution Overview
Problem
Existing elevator systems fail to inform passengers of elevator states accurately and prevent accidents by detecting boarding states through object detection sensors to automatically close an elevator door when passengers complete boarding states through object detection sensors to automatically close an elevator door when all passengers board the elevator car, and inform elevator states through voice guidance only when a passenger is detected.
Innovation Solution
An elevator system equipped with an object detection sensor to detect passengers, a passenger determination unit to identify prospective elevator passengers, and a door controller to automatically close the elevator door when all passengers have boarded, while informing elevator states through voice guidance only when a passenger is present.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the elevator door remains open for a predetermined waiting time to allow passengers to board, then passengers have sufficient time to board the elevator, but the elevator departure is delayed and virus transmission risk increases through contact with the door closing button
Solution Approach 1:
The patent replaces the mechanical button-pressing system with an optical detection system. Object detection sensors detect passengers in the boarding region, and the controller automatically controls door closing based on detection results, eliminating the need for mechanical button operation and contact-based control.
Solution Approach 2:
The elevator system performs self-monitoring and self-control regarding door operation. The controller continuously monitors passenger presence through object detection sensors and automatically adjusts door closing timing based on detected passenger states, without requiring manual button input from passengers.
2Loss of information
If the display unit shows elevator state information through text, then the information is clearly visible, but passengers must approach the platform closely to read the information
Solution Approach 1:
The patent adds a new dimension of information delivery by introducing voice output alongside visual display. The state information output unit provides both visual text display and audible voice guidance, allowing passengers to receive elevator state information through multiple sensory channels simultaneously, improving accessibility and reducing the need to closely approach the display.
3Loss of information
If voice guidance continues to inform passengers of elevator unavailability, then passengers are kept informed of the elevator state, but continuous noise is generated
Solution Approach 1:
The patent implements periodic rather than continuous voice output. The controller activates voice guidance only at specific moments when elevator state changes occur, and deactivates it when the state is normal or when no passengers are detected, creating intermittent notification that reduces noise while maintaining information delivery.
Solution Approach 2:
The system uses object detection sensor feedback to control voice output timing. When passengers are detected in the boarding region, voice guidance is activated to inform them of elevator status. When no passengers are present or the elevator is operating normally, voice output is suppressed to avoid unnecessary noise.
4Loss of time
If the door closing button is frequently manipulated to reduce waiting time, then elevator departure is accelerated, but the button suffers from aging and damage
Solution Approach 1:
The patent replaces the mechanical button system with an automated optical detection and control system. Object detection sensors monitor passenger presence, and the controller automatically determines door closing timing based on detection results, eliminating repeated mechanical button manipulation and its associated wear and damage.
5Productivity
If the elevator door automatically closes without detecting passenger boarding state, then the door operation is simple and fast, but passengers may be accidentally excluded or safety accidents may occur
Solution Approach 1:
The patent performs preliminary detection of passenger boarding state before executing door closing. The object detection sensors continuously monitor the boarding region in advance, and the controller uses this提前 detected information to determine the appropriate timing for door closing, ensuring passengers are safely onboard before the door closes.
Solution Approach 2:
The system uses real-time feedback from object detection sensors to control door operation. The sensors continuously provide information about passenger presence in the boarding region, and the controller adjusts door closing timing based on this feedback, maintaining both operational speed and passenger safety.
Data Source
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AI summary
Disclosed is an elevator system capable of informing a prospective elevator passenger of an elevator state. The elevator system includes an object detection sensor configured to detect an object in a detection region of a platform, and a passenger determination unit configured to determine whether the detected object is a prospective elevator passenger based on object detection information of the object detection sensor.