System and methods for controlling a movement of elevator cars of an elevator system. Determine, for each elevator car, an individual waiting time of accommodating each hall call. Determine, for each pair of hall calls assigned to each elevator car, a pairwise delay over the individual waiting time of each hall call in the pair caused by a joint assignment of the elevator car to accommodate the pair of the hall calls. Approximate a cumulative waiting time of an assignment of the elevator cars. Determine the assignment of the elevator cars using a branch and bound algorithm using spectral relaxations based on a generalized eigenvalue and spectral branching that assigns the plurality of hall calls to the elevator cars to minimize the approximated cumulative waiting time. Use a controller for controlling the movement of the elevator cars according to the assignment.

A method for controlling an elevator where an elevator is allocated for the use of a passenger in a first optimization phase in such a way that a first cost function is minimized, a second optimization phase is performed, in which the route of the allocated elevator is optimized in such a way that a second cost function is minimized.

Systems and Methods for controlling a movement of cars of an elevator system. A processor determines for each car an individual waiting time of each hall call. Determines for each pair of hall calls assigned for each car, a pairwise delay over the individual waiting time of each hall call in the pair caused by a joint assignment of the car to the pair of the hall calls. Approximate a cumulative waiting time of an assignment of the cars to the hall calls as a sum of individual waiting times for each hall call with the assigned car and a sum of all pairwise delays determined between all pairs of hall calls assigned to the same car. Determine the assignment of the cars using a greedy optimization algorithm that greedily assigns hall calls to the cars to minimize the approximated cumulative waiting time, and control the movement of the cars.

An elevator system includes a first elevator group controller configured to control a first elevator car of a first elevator group; a second elevator group controller configured to control a second elevator car of a second elevator group, the second elevator group controller in bi-directional communication with the first elevator group controller; a destination entry device configured to receive a destination call from a passenger, the destination call identifying a source floor and a destination floor; at least one of the first elevator group controller and the second elevator group controller determining that a journey from the source floor to the destination floor requires a first phase utilizing the first elevator group and a second phase utilizing the second elevator group; at least one of the first elevator group controller and the second elevator group controller allocating the first elevator car and allocating the second elevator car.

A method and a system for modernizing an elevator installation including two or more elevators includes an unmodernized elevator, one or more call-giving devices, a new group controller, which is connected to the elevator installation for allocating an elevator call to be given with a call-giving device to be served by an elevator belonging to the elevator installation, and also a measuring device, which is configured to measure an operating parameter of an unmodernized elevator. The aforementioned measuring device is connected to the new group controller for communicating the aforementioned operating parameter to the new group controller.

An elevator control system for controlling a plurality of elevators in an elevator bank includes a processor in communication with a non-transitory memory, and a networking device. The processor executes software instructions that cause the elevator control system to receive an elevator call placed by at least one of a user and a mobile device of the user. The elevator control system wirelessly communicates with the mobile device to determine an elevator criteria set by the user on the mobile device via an elevator control application. The elevator criteria comprises a preference and a requirement. The software instructions allow the processor to determine whether an elevator in the elevator bank meets the requirement and the preference, and an elevator that meets at least the requirement is automatically assigned to the user.

A method for controlling elevator cars of an elevator system according to one example includes assigning free elevator cars of the elevator system to one of either general service or express priority service (EPS). A destination dispatch controller receives an express priority service (EPS) call. The EPS call can indicate a request for priority service from an EPS call originating location to an EPS call final destination. The controller can determine whether any active EPS assigned car can service the EPS call. A particular elevator car can be an active EPS car when the particular car is carrying out EPS service. When a specific active EPS car can service the EPS call, the controller assigns the specific EPS car to the EPS call. Upon completion of the EPS call, the controller unassigns the EPS car to a free car.

An elevator system includes at least one elevator car, and an elevator drive system configured to drive the elevator car in a first direction and a second opposing direction based on at least one drive command signal. The elevator system further includes an electronic elevator control module that determines a first servicing route and a second servicing route. The first servicing route services a first floor located along the first direction in response to at least one first call request. The second servicing route overrides the first servicing route so as to dynamically service at least one second floor located along the second direction based on a comparison between at least one parameter of the at least one elevator car and at least one interrupt criteria.

When a specific destination floor call is made, the control unit assigns an elevator of which waiting time is within the reference time from the plurality of elevators to the specific destination floor call, the waiting time being a time from a time when the specific destination floor call is made to a time when the specific user can get on an elevator at the specific floor. Further, when a general destination floor call is made, the control unit assigns one of the plurality of elevators in response to the general destination floor call such that an elevator of which waiting time to the specific destination floor call that is made after the general destination floor call is within the reference time is left.

A method for dispatching an elevator car that includes determining a first duration for each of a plurality of first elevator cars to travel from a current location to a first location, and dispatching at least one of the first elevator cars to the first location when the first duration of the at least one first elevator car is less than a threshold duration. The method includes determining a second duration for an occupant to travel from the first location to a second location, and each of a plurality of second elevator cars to travel from the current location to the second location, when the first duration for the first elevator cars exceeds the threshold duration. The method includes dispatching at least one of the second elevator cars to the second location when the second duration of the at least one second elevator car is less than the threshold duration.