Elevator Control Apparatus for Dynamic Car Reassignment
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Solution Overview
Problem
In crowded elevator scenarios, especially before office hours, users face confusion and discomfort due to overloaded cars, where the existing car stop destination floor registration systems fail to efficiently assign users to available cars, leading to some users being unable to board their assigned car.
Innovation Solution
An elevator control apparatus with car stop destination floor registration devices that include a response time calculation unit, assignment control unit, car load calculation unit, and boarding possibility determination unit, which calculates response times, selects the optimal car, and determines boarding possibilities based on car load and capacity, allowing for reassignment to a less crowded car if initial assignment is overloaded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the car stop destination floor registration device displays the assigned car number to users, then users can understand which car they should get on, but when the car arrives at the specific floor, the car may be overloaded and users cannot board
Solution Approach 1:
The system performs preliminary actions by calculating expected car load in advance and determining boarding possibility before assigning cars to users. This allows the system to predict whether a user can board the assigned car and take preventive measures, such as assigning alternative cars or notifying users of potential boarding issues, thereby maintaining information accuracy while improving boarding reliability.
Solution Approach 2:
The system implements feedback mechanisms by continuously monitoring actual car load and comparing it with expected load calculations. When the actual load exceeds capacity or boarding possibility is determined to be false, the system provides feedback to both the control unit and users, enabling dynamic car reassignment or user notification to ensure reliable boarding.
2Productivity
If the system assigns cars based on destination floor registration, then car stop calls are efficiently assigned to optimum cars, but users experience confusion when cars are overloaded
Solution Approach 1:
The system performs preliminary load calculations and boarding possibility determinations before car assignment. By calculating expected car load and determining whether users can board in advance, the system can make more accurate car assignments that consider both efficiency and user boarding feasibility, reducing confusion and improving ease of operation while maintaining high productivity.
Solution Approach 2:
The system provides feedback to users about car assignment status and boarding possibility. When overload is detected or boarding is not possible, the system notifies users and facilitates reassignment to alternative cars, maintaining clear communication and user understanding while preserving efficient car stop call assignment operations.
3Ease of operation
If users register destination floors in advance at car stop, then no registration operation is needed in the car, but users feel uncomfortable when they cannot board their assigned car
Solution Approach 1:
The system performs preliminary boarding possibility determination and provides advance information to users about whether they can board their assigned car. By calculating expected load and determining boarding feasibility before assignment, the system can manage user expectations and provide timely notifications, reducing user discomfort while maintaining the convenience of advance registration operations.
Solution Approach 2:
The system implements feedback mechanisms that notify users of boarding issues and facilitate alternative arrangements. When users cannot board their assigned car due to overload, the system provides feedback through notifications and enables users to be reassigned to alternative cars, thereby reducing discomfort while preserving the ease of advance registration operations.
Data Source
AI summary
According to one embodiment, a response time calculation unit calculates a response time of each of the cars required when the car stop call is assigned to the car. An assignment control unit assigns the car stop call to the optimum car, based on the response time of each of the cars. A car load calculation unit calculates a load value of each car at the time when each car starts from a registration floor of the car stop call after responding to the call. A boarding possibility determination unit determines, for each car, whether the user can get on the car or not, by comparing the load value with a preset capacity value. A registration control unit performs control to assign the car stop call, including a second and later responses to the registration floor of the car stop call, based on a determination result of the boarding possibility.