Elevator Group Management System Priority Car Assignment
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Solution Overview
Problem
The existing elevator group management system inconveniences general users when a car already assigned to a hall call is selected as a priority car, leading to a decline in their convenience.
Innovation Solution
An elevator group management system that includes hall call registration, hall destination call registration, notification, assigned car display, and group management control devices, which assigns a different car for priority operations, allowing the originally assigned priority car to respond to its registered hall destination call, thereby minimizing inconvenience to general users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a car already assigned to a hall call is selected as a priority car, then the priority operation can be performed efficiently, but the convenience of general users declines
Solution Approach 1:
The system segments the car assignment into two distinct scenarios: priority car selection and general user service. When a priority operation is initiated, the system identifies and assigns a priority car, then separately manages the hall call assignments to ensure general users are not adversely affected. This segmentation allows independent optimization of both priority response and general user convenience.
Solution Approach 2:
The system performs preliminary actions by notifying general users in advance when their assigned car is selected for priority operation. The notification device alerts users before the priority car departs, allowing them to prepare alternative arrangements. This preliminary notification prevents inconvenience by giving users advance warning of the situation.
2Productivity
If a car is reassigned from a hall call to perform priority operation, then the priority operation can be executed, but the original hall call assignment is disrupted
Solution Approach 1:
The system temporarily discards the original hall call assignment of the priority car when priority operation is needed, then recovers the assignment stability by reassigning the hall call to a different car. This ensures the priority operation can proceed while the hall call service continuity is maintained through alternative car assignment.
Solution Approach 2:
The group management control device acts as an intermediary between the priority operation request and the hall call assignment system. It mediates the conflict by coordinating car reassignments and notifications, ensuring that priority operations are executed while minimizing disruption to hall call assignments through systematic management.
Data Source
AI summary
An elevator group management system includes: a hall call registration device which is provided at a first hall; a hall destination call registration device which is provided at a second hall; a notification device which is provided at the first hall; an assigned car display device which is provided at the second hall; and a group management control device which selects a priority car from among a plurality of cars. When a priority car is selected, the group management control device performs, with respect to a hall call to which the priority car is already assigned, hall call control which differs from control with respect to a hall destination call to which the priority car is already assigned.