Elevator Destination Floor Registration Device with Presence Detection
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Solution Overview
Problem
Passengers who are not familiar with the destination floor registration device for elevators may misunderstand the indication of destination floor identification, leading to prolonged presence in front of the microphone, preventing elevator usage and potential incorrect destination input.
Innovation Solution
The device incorporates a human detection sensor, voice comparison means, and a counter with threshold values to detect passenger presence and provide visual and auditory cues to prompt passengers to move away from the microphone after a predetermined time, ensuring timely registration of the destination floor and preventing prolonged detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sensor continuously detects passenger presence to ensure accurate destination floor registration, then the reliability of destination input is improved, but passengers may stay in front of the sensor indefinitely preventing elevator usage
Solution Approach 1:
The system performs preliminary voice recognition and destination floor identification while the passenger is still in the detection range. The counter accumulates detection time and compares it against a threshold, triggering a prompt to move away before the registration is finalized. This preliminary action ensures the destination is captured accurately while preventing indefinite blocking of the elevator.
Solution Approach 2:
The system provides real-time feedback to the passenger through a prompt message when the detection time exceeds the threshold. This feedback mechanism informs the passenger that they need to move away from the microphone for the registration to be completed, resolving the contradiction by guiding passenger behavior while maintaining registration reliability.
2Measurement precision
If the system waits for passenger departure to transmit destination information, then accurate destination recognition is ensured, but passengers unfamiliar with the system may not understand when to leave causing delays
Solution Approach 1:
The voice recognition process is initiated as soon as the passenger enters the detection range, and the destination floor is identified preliminarily. The system accumulates detection time and prepares the registration result in advance. When the threshold is reached, the system promptly requests the passenger to move away, minimizing waiting time while ensuring accurate recognition has been performed.
Solution Approach 2:
The system provides feedback through a prompt message that clearly indicates when the passenger should move away. This feedback bridges the information gap for unfamiliar passengers, telling them explicitly when the system has recognized their destination and when they need to depart, thus reducing unnecessary waiting time while maintaining recognition accuracy.
3Productivity
If a prompt message is displayed to ask passengers to move away, then passenger flow efficiency is improved, but the device complexity increases due to additional components
Solution Approach 1:
The notification device is designed to serve multiple functions: it displays prompt messages to passengers, provides system status information, and can potentially display destination confirmation. By making the notification device multi-functional, the patent reduces the need for separate dedicated components for each function, thereby limiting the increase in device complexity while achieving improved passenger flow efficiency.
Data Source
AI summary
In a destination floor registration device which permits the voice input of a destination floor in the hall of an elevator, passengers are positively prevented from staying in front of the sensor which detects the presence of passengers. A microphone for voice input, a sensor for detecting the presence of a passenger present in a prescribed range in the vicinity of the microphone and a notification device are installed in a hall of an elevator. Also, there are provided voice comparison means which identifies a destination floor of a passenger on the basis of a voice signal from the microphone while the sensor is detecting the presence of a passenger and holding means which holds information on a destination floor identified by the voice comparison means while the sensor is detecting the presence of a passenger and thereafter outputs the held information on a destination floor to a controller of the elevator when the sensor ceases to detect the presence of a passenger. The period of time during which the sensor continues to detect the presence of a passenger is measured and the notification device is caused to notify a prescribed guidance to prompt the passenger to move away from the microphone when the measured period of time exceeds a prescribed threshold value.