Double-deck elevator controller dynamic car assignment
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Solution Overview
Problem
Conventional double-deck elevator group controllers have limited flexibility in assigning car calls between even-numbered and odd-numbered floors, leading to decreased operation efficiency, as they cannot effectively manage scenarios where from-hall car calls span across both modes, resulting in inefficient car utilization and increased number of stops.
Innovation Solution
A double-deck elevator group controller with a hall-installed destination floor input device and operation mode storage means that allows for two operation modes: one where the upper car serves the upper lobby and even-numbered floors, and the lower car serves odd-numbered floors, and another where both cars serve all floors, with a candidate car selection mechanism that optimizes the number of stops and assigns cars based on minimum increment values and traffic conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the conventional double-deck elevator group controller strictly assigns the upper car to even-numbered floors and the lower car to odd-numbered floors, then the operation mode is simple and easy to control, but the degree of freedom in car operation is limited and operation efficiency decreases
Solution Approach 1:
The patent applies dynamics by making the car assignment rules flexible rather than fixed. The controller dynamically adjusts which car (upper or lower) responds to from-hall car calls based on real-time conditions such as car positions, traffic patterns, and destination floors. This allows the system to switch between strict even-odd assignment and more flexible assignment strategies, resolving the contradiction between ease of control and operational freedom.
Solution Approach 2:
The patent changes the parameter of car assignment rules from fixed (even-odd strict separation) to variable. By introducing conditions under which cars can serve floors outside their traditional even-odd assignments, the system optimizes operational efficiency while maintaining controllable complexity through defined decision criteria.
2Device complexity
If the conventional controller restricts from-hall car calls to strict even-odd floor assignments, then the control logic is simple, but the operation efficiency decreases due to increased number of stops
Solution Approach 1:
The controller dynamically determines car assignment based on multiple factors including current car positions, destination floors, and traffic patterns. This dynamic approach allows the system to reduce the number of stops by assigning cars more efficiently, while the decision-making process remains structured through defined criteria, balancing complexity and efficiency.
Solution Approach 2:
The system uses feedback from car positions, call registrations, and operational status to continuously optimize car assignment. This feedback mechanism enables the controller to make informed decisions about which car should respond to from-hall calls, improving operational efficiency without requiring overly complex control logic.
3Ease of operation
If the conventional system uses separate from-hall car call registration devices for even-numbered and odd-numbered destination floors, then the car assignment is straightforward, but the adaptability to different traffic conditions is reduced
Solution Approach 1:
The patent makes the car assignment system universal by allowing both upper and lower cars to respond to from-hall car calls under certain conditions, rather than strictly limiting each car to specific floor parities. This multi-functional approach enables the system to adapt to various traffic conditions while maintaining straightforward control through defined assignment criteria.
Solution Approach 2:
The system changes the parameter of floor assignment restrictions from fixed (even floors for upper car, odd floors for lower car) to variable based on traffic conditions. This allows the controller to optimize car selection dynamically while maintaining clear control logic through conditional rules.
4Device complexity
If the conventional controller assigns cars based solely on even-odd floor separation, then the control mechanism is simple, but the response time and operational flexibility to varying traffic volumes are insufficient
Solution Approach 1:
The controller dynamically adjusts car assignment based on real-time traffic conditions, car positions, and call patterns. This dynamic response reduces waiting time and improves response time by selecting the most appropriate car for each from-hall call, while the control mechanism remains relatively simple through structured decision criteria.
Solution Approach 2:
The system continuously monitors traffic conditions and car status, using this feedback to optimize car assignment in real-time. This feedback-driven approach improves response time by making informed decisions about which car should serve each call, without requiring complex control mechanisms.
Data Source
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AI summary
Provided is a double-deck elevator group controller which can meet a from-hall car call between arbitrary floors registered from a hall-installed car call registration device and has a high operation efficiency. In the double-deck elevator group controller of the present invention, which is provided with a hall-installed car call registration device, cars of the first operation mode which are in charge of operation between even-numbered floors or between odd-numbered floors and cars of the second operation mode which serve all of the floors at which the cars can stop, are set, and in consideration of both combinations of boarding and alighting floors of registered from-hall car calls and an increment of the number of stops, the from-hall car calls are divided for assignment to the cars of the first operation mode and the cars of the second operation, whereby it is possible to meet from-hall car calls having arbitrary floors as the boarding and alighting floors and it is possible to improve the operation efficiency.