Abstract:
A system for controlling a plurality of elevator cars in which a hall call originating means is disposed at each floor landing so that passengers standing at the floor landing can designate the floors to which they want to be transferred, and a target floor memory is provided for each elevator car to store information as to the floors at which such elevator car has already been instructed to stop. In the system, means are provided to detect the coincidence between the floor numbers designated by a hall call originating from one of the floors and the floor numbers stored already in the target floor memory for each elevator car so that the elevator car for which the coincidence occurs in a greater number can be preferentially selected to be stopped at the specific floor.
Abstract:
There is provided an elevator system that is capable of operating a plurality of elevators with good efficiency without an increase in the processing load for elevator control. For this purpose, a car call registration device by use of which an elevator user registers a car call before riding on a car is provided in a hall, and a group supervisory controller is provided with a building specification data storage section in which building specification data including specially-assigned floors is stored, a specially-assigned floor judgment section that makes a judgment as to whether or not a departure floor is a specially-assigned floor when a car call has been registered, and a traffic condition judgment section that judges the traffic condition of elevators within a building. An assignment of the car is performed on the basis of judgment results of the traffic condition judgment section when it is judged by the specially-assigned floor judgment section that the departure floor is a specially-assigned floor, and an assignment of the car is performed on the basis of a building specification stored in the building specification data storage section when it is judged by the specially-assigned floor judgment section that the departure floor is not a specially-assigned floor.
Abstract:
The invention relates to a procedure for controlling an elevator group consisting of double-deck elevators. According to the invention, landing calls are allocated to the elevators and after that to the elevator decks in such a way that the passenger journey time is optimised. The procedure of the invention takes into account the time the call has been on and the estimated time of arrival to the destination floor.
Abstract:
The invention relates to a procedure for allocating the calls (20) entered by means of the landing call devices (44) of the elevators in an elevator bank. According to the invention, several allocation options (36, 38) are formed, each of which contains for each active landing call (20) a call data item and an elevator data item and these data together determine which elevator (2, 4, 6) is to serve the call, the value of a cost function is calculated for each allocation option (36, 38), one or more of the allocation options (36, 38) is repeatedly changed with respect to at least one data item and the values of the cost functions of the new allocation options are calculated and, based on the values of the cost functions, the best allocation option is selected and the elevator calls active are allocated to the elevators in the elevator bank accordingly.
Abstract:
An elevator system employing a micro-processor-based group controller communicating with the cars to assign cars to hall calls based on a Relative System Response (RSR) approach. However, rather than using unvarying bonuses and penalties, the assigned bonuses and penalties are varied using "artificial intelligence" techniques based on combined historic and real time traffic predictions to predict the number of people behind the hall call, and calculating and using the average boarding and de-boarding rates at "en route" stops and the expected car load at the hall call floor. Prediction of the number of people waiting behind hall calls for a few minute intervals are made using traffic levels measured during the past few time intervals on that day as real time predictors, using a linear exponential smoothing model, and traffic levels measured during similar time intervals on previous similar days as historic traffic predictors, using a single exponential smoothing model. The remaining capacity in the car at the hall call floor is matched to the waiting queue using a hall call mismatch penalty. The car stop and hall stop penalties are varied based on the number of people behind the hall call and the variable dwell times at "en route" stops. The stopping of a heavily loaded car to pick up a few people is penalized using a car load penalty. These enhancements to RSR result in equitable distribution of car stops and car loads, thus improving handling capacity and reducing waiting and service times.