Elevator Car Assignment Notification via Personal Terminal
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Solution Overview
Problem
In group management elevator systems, users are not timely notified of changes in the assigned elevator car, even if the most appropriate car is reassigned due to changes in the elevator group's situation, which affects convenience.
Innovation Solution
An elevator system with a personal information terminal and an elevator control device that assigns and reassigns cars based on call registration information, using a display unit to notify users of changes in assigned cars, including the reason for reassignment, allowing users to select services like reassignment prohibition or additional call registration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the assigned car is changed due to operation of the elevator group, then the appropriateness of car assignment is improved, but the user cannot be notified of the changing at an appropriate timing
Solution Approach 1:
The system implements feedback by continuously monitoring elevator group operations and automatically notifying users of car reassignment through the personal information terminal. When a car is reassigned due to group operations, the notification is sent to the user's terminal, ensuring they are informed of the changes in their assigned car.
Solution Approach 2:
The system performs preliminary action by proactively notifying users of car reassignment before they arrive at the floor. The notification is sent in advance through the personal information terminal, allowing users to adjust their expectations and plan accordingly, rather than discovering the reassignment at the moment of need.
2Productivity
If the assigned car is changed due to operation of the elevator group, then the efficiency of elevator group operation is improved, but the user convenience deteriorates
Solution Approach 1:
The system maintains user convenience by providing feedback about car reassignment through the personal information terminal. Users are notified of changes to their assigned car, allowing them to understand the operational decisions and adjust their behavior accordingly, thus maintaining ease of operation even when efficiency-driven reassignments occur.
Solution Approach 2:
The personal information terminal acts as an intermediary between the elevator control device and the user. It conveys information about car reassignment to the user in a user-friendly manner, bridging the gap between automated operational decisions and user understanding, thereby maintaining convenience despite operational changes.
3Device complexity
If the assigned car is not changed, then the user notification system is simple, but the appropriateness of car assignment deteriorates
Solution Approach 1:
The personal information terminal performs multiple functions: it serves as both the user interface for normal operation and the notification device for car reassignment. By reusing existing terminal capabilities for notification purposes, the system avoids adding separate complex notification hardware while still achieving appropriate car assignment adaptability.
Data Source
AI summary
An elevator system of this disclosure includes: a personal information terminal, which is carried by an elevator user and includes a display unit configured to represent a plurality of available services and a selecting unit by which it is possible to select a service by the display unit; and an elevator control device, which assigns a car of an elevator group according to call registration information from the personal information terminal and transmits information on the assigned car to the personal information terminal, wherein in a case where assigned car is changed due to the situation of the elevator group, the elevator control device changes the assigned car of the elevator group and displays a reassigned car for the user on the display unit of the personal information terminal.