Abstract:
An elevator group control with immediate allocation of floor calls includes an apparatus for processing car calls according to a car call algorithm implemented in a process computer in dependence on the traffic volume, the position of the calls, and the immediately allocated floor calls. Floor calls allocated by a floor call algorithm are entered for each elevataor car in a first list of the current one half round trip and/or in a second list of the next one half round trip. Both lists are stored in a memory region common to the algorithms. In the case of low traffic volume, car calls lying ahead of the elevator cars are entered into the first list unconditionally and car calls lying behind are entered into the second list subject to a maximum trip distance. In the case of average traffic volume, car calls lying ahead are entered into the first list in case synonymous allocated calls are already present therein. Otherwise, these calls are entered into the second list as also are the car calls lying behind subject to the maximum trip distance. In the case of high traffic volume, an entry takes place into the first and second lists only in case synonymous allocated calls are entered and the maximum trip distance is not exceeded.
Abstract:
Elevator system passengers (170) are transported in one or more of a plurality of elevator cars (130, 132). The elevator cars (130, 132) can require different amounts of energy to operate. Passenger trips can be allocated to one car or another car based on the expected energy consumption for the trips in one or the other car.
Abstract:
An exemplary method of controlling an elevator system includes determining a source floor of a new call from a passenger desiring elevator service. A direction of travel from the source floor for the new call is also determined. A path of a considered elevator car is simulated as if the new call were assigned to the considered elevator car by determining at least one of (i) a relationship between a position of the considered elevator car and the source floor or (ii) a relationship between a direction of movement of the considered elevator car and the direction of travel. The new call is assigned to one of a plurality of elevator cars if the assigning will satisfy each of (i) the one of the elevator cars will not move in a direction opposite the direction of travel during a time between the passenger boarding the one of the elevator cars and arriving at a destination of the passenger and (ii) the one of the elevator cars will not move in a direction opposite a travel direction of any currently assigned passenger during a time between the currently assigned passenger boarding the one of the elevator cars and arriving at a destination of the currently assigned passenger.
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:
The invention relates to a method for handling destination calls in an elevator group comprising several elevators using destination call control, which method comprises an allocation procedure for situations where the calls can't be served by all elevators of the elevator group in one round trip, in which situation "n" open calls and "m" fixed calls are present, which fixed calls are already allocated but not served, in which allocation procedure a genetic algorithm (GA) is used in which the following succession of steps is performed: a) chromosomes comprising genes are formed, in which chromosomes: - n first genes comprise a correlation of each open call and a corresponding elevator, - n second genes comprise a correlation of each open call and the corresponding number of the round trip in which the open call will be served, and - m third genes comprise a correlation of each fixed call and the corresponding number of the round trip in which the fixed call will be served, b) for each chromosome round trips are calculated for each elevator of the elevator group according to collective control, c) the round trips of all elevators calculated in step b) are evaluated according to known optimization criteria, as e.g. passenger riding time, passenger waiting time, energy consumption, minimum number of round trips etc., d) chromosomes which are evaluated in step c) as sufficient are put forward to the forming of a new generation by per se known GA methods, as e.g. cross-breeding, mutation, etc., e) the steps b) to d) are repeated for each chromosome of each new generation of chromosomes until a stop criterion is achieved, f) the calls are served in collective control according to the best chromosome of the last generation, and g) the destinations of each elevator in its travelling direction in the current round trip according to the best chromosome are shown on a at least one common display shortly before its arrival at said landing. The invention solves the elevator dispatching problem under consideration of more than the current round trip of the elevators in the elevator group.