Elevator Group Management System with Dynamic Car Review
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Solution Overview
Problem
Conventional elevator group management systems determine assigned cars immediately after destination floor registration, failing to consider changes in boarding floor information and resulting in inefficient operation.
Innovation Solution
An elevator group management system that includes a hall destination floor registration device, provisionally assigns cars based on initial registration, reviews and reassigns as needed during a predetermined period considering waiting time and number of stops, and designates a finally assigned car for improved efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If assigned car is determined immediately after destination floor registration, then response speed is improved, but operational efficiency deteriorates due to inability to evaluate waiting time and number of stops
Solution Approach 1:
The system performs preliminary provisional assignment immediately when destination floor is registered, providing instant response to passengers. Then during a review period, the system evaluates waiting time and number of stops to optimize the assignment. This two-stage approach combines immediate response with subsequent optimization.
Solution Approach 2:
The assignment is not fixed immediately but remains dynamic during a review period. The system continuously monitors and re-evaluates the provisional assignment based on changing conditions (boarding floor information, car positions, other calls), allowing the assignment to be optimized before final determination.
2Loss of time
If provisional assignment is made immediately, then passenger information is provided quickly, but system cannot adapt to changes in boarding floor information that occur after registration
Solution Approach 1:
Provisional assignment is made immediately to provide quick information to passengers about which car to take. The review period then allows the system to adapt to any changes in boarding floor information or other conditions before finalizing the assignment.
Solution Approach 2:
The system continuously monitors changes in boarding floor information, car positions, and other parameters during the review period. This feedback mechanism allows the system to detect changes and re-evaluate the provisional assignment to ensure optimal performance.
3Device complexity
If assignment is finalized immediately, then processing complexity is reduced, but system cannot optimize based on waiting time and number of stops evaluation
Solution Approach 1:
The assignment process is segmented into distinct phases: immediate provisional assignment (simple processing) followed by a review period with detailed evaluation of waiting time and number of stops (complex optimization). This segmentation allows the system to balance simplicity and optimization.
Solution Approach 2:
A simple provisional assignment is made immediately to reduce processing complexity and provide quick response. The more complex optimization evaluation of waiting time and number of stops is performed subsequently during the review period, separating the simple and complex tasks in time.
Data Source
AI summary
An elevator group management system improving operational efficiency in consideration of a situation change that has occurred after a destination floor registration in a hall. An assigned car review mechanism executes assigned car review processing in units of review registration information sets each including at least one piece of provisionally assigned car registration information managed by a registered destination floor hall call management section during a review period. After ending the assigned car review processing, the assigned car review mechanism modifies the contents of the provisionally assigned car registration information in the registered destination floor hall call management section based on the contents of the review registration information set after modification. That is, the assigned car review mechanism newly registers the provisionally assigned car registration information after review and erases the provisionally assigned car registration information before review at the same time.