Elevator Voice Announcement Priority Control
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Solution Overview
Problem
Existing elevator systems that announce call registrations and other information via voice input face issues with overlapping announcements, leading to confusion and ineffective information delivery, particularly when users are no longer present or when higher-priority announcements interrupt ongoing messages.
Innovation Solution
An elevator device with a voice recognition system, call registration control, and announcement management that prioritizes and manages voice outputs, allowing for seamless transitions and re-output of announcements based on user presence, car status, and priority levels to ensure timely and accurate information delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If multiple announcements are made simultaneously, then information delivery is comprehensive, but users cannot hear accurate contents due to overlapping announcements
Solution Approach 1:
The system dynamically adjusts announcement behavior based on real-time conditions. The announcement control device monitors user presence, car status, and timing to determine whether to output, suspend, or skip announcements, making the information delivery system adaptive rather than static.
Solution Approach 2:
The system uses feedback from multiple sensors (presence detection, car status detection) to control announcement output. The announcement control device receives feedback about current system state and adjusts announcement behavior accordingly, creating a closed-loop control system.
2Speed
If high-priority announcements interrupt ongoing announcements, then important information is delivered timely, but users may be confused by restart of interrupted announcements
Solution Approach 1:
The system dynamically determines whether to re-output interrupted announcements based on real-time conditions. The announcement control device evaluates user presence, car status, and timing to decide if re-output is necessary, making the interruption handling adaptive rather than fixed.
Solution Approach 2:
The system changes the parameter of announcement output based on detected conditions. When conditions indicate a user is present and may have missed information, the system changes from no re-output to re-output mode, adjusting the information delivery parameter based on environmental parameters.
3Loss of information
If announcements are made after users have left the hall, then information is delivered, but the announcement becomes useless as users are no longer present
Solution Approach 1:
The system performs preliminary checks for user presence before making announcements. The announcement control device detects whether a user is present in the hall before outputting announcements, and also performs preliminary evaluation of whether re-output is necessary after interruptions, preventing wasted information delivery.
Solution Approach 2:
The system uses feedback from presence detection to control announcement output timing. The announcement control device continuously monitors user presence and adjusts announcement timing based on this feedback, ensuring announcements are made when users are actually present to receive them.
4Device complexity
If a single speaker is used for all announcements, then device complexity is reduced, but announcement timing and accuracy deteriorate when multiple information types overlap
Solution Approach 1:
The announcement control device performs multiple functions using a single speaker system. It manages priority arbitration, timing control, suspension decisions, and re-output determination, making the control device multi-functional to compensate for the single speaker limitation.
Solution Approach 2:
The announcement control device acts as an intermediary between multiple information sources and the single speaker. It mediates conflicting announcement requests, resolves timing conflicts, and coordinates output timing to ensure accurate information delivery despite the single speaker constraint.
Data Source
AI summary
An elevator device includes a voice input device, a voice recognition device, a call registration device, and an announcement control device. Upon receipt of an announcement request for a second announcement having higher priority than a first announcement while the announcement control device is causing the announcement output device to output the first announcement, the announcement control device stops the first announcement and causes the announcement output device to output the second announcement. The announcement control device also determines whether the re-output of the first announcement is necessary. In the case where the announcement control device determines that the re-output of the first announcement is necessary, upon finish of the second announcement, the announcement control device causes the announcement output device to re-output the first announcement.