Abstract:
Instantaneous car assignment is combined with sectoring for providing an elevator dispatching scheme in which, in response to a hall call registered at the lobby, a car not assigned to a sector and having the lowest remaining response time of all such cars is assigned to the next available sector and the sector assignment is displayed to passengers immediately on a screen in the lobby.
Abstract:
The present invention relates to a group control elevator system which has been adjusted to operate in response to a state of utilizing elevator cars. In a group control elevator system which carries out a control of allocating elevator cars to elevator car calls for serving many floors by using an evaluation function having a plurality of variable parameters, targets for elevator control performance are inputted, a traffic flow to which elevator car demand belongs is judged, variable parameters to be adjusted which have been set in advance for each combination of said targets and traffic flows are stored, stored variable parameters are adjusted, adjustment sequence of variable parameters to be adjusted is stored, and a plurality of variable parameters are sequentially adjusted according to the stored sequence. By the above arrangement, only desired parameters to be adjusted are selected and adjusted out of a plurality of variable parameters for desired targets and traffic flows. Accordingly, an increase in time required for adjustment can be restricted even if there has been an increase in the number of variable parameters to be adjusted.
Abstract:
A method for controlling the dispatching of elevator cars, and apparatus for accomplishing the method. The method includes the steps of (a) receiving a hall call from a floor landing; (b) determining a current passenger load of an elevator car; (c) determining if a crowd signal is generated for the floor landing; and, if it is determined that a crowd signal is generated for the floor landing, (d) determining, from the current passenger load, if the elevator car is EMPTY. If it is determined that the elevator car is EMPTY, the method further includes the steps of (e) assigning an Empty Car Bonus to the elevator car; and (f) employing the Empty Car Bonus value in determining a Relative System Response for the elevator car. The Relative System Response is a function of a plurality of bonuses and penalties. The use of the invention increases the efficiency of the elevator system and serves to decrease the waiting time for persons waiting behind the hall call by increasing the probability of an empty car being assigned to a hall call having a crowd waiting behind the hall call.
Abstract:
An elevator car dispatcher having an artificially intelligent supervisor which generates a crowd prediction signal associated with a particular floor, monitors a condition of a first elevator car which has serviced the predetermined floor and controls the remainder of elevator cars assigned to the predetermined floor dependent upon the condition of the first car.
Abstract:
An elevator control system for controlling movement of cages up and down in accordance with the situation of waiting persons in landing places or passengers in the cages detected by image pickup devices and other detecting devices includes first and second image processors, the image processing level of the second image processor being not lower than that of the first image processor. The system further includes an elevator controller for controlling movement of the cages up and down, the elevator controller including a device for applying the result of image processing performed by the first image processor to the control of the cages, and a device for applying the result of image processing performed by the second image processor to the control of the cages when the image processing is carried out based on the result of image processing performed by the first image processor and other information pertaining to passengers and waiting persons detected by the other detecting devices.
Abstract:
During up-peak, a dispatcher selecting method chooses among three dispatching algorithms: (i) an up-peak sectoring scheme triggered when two cars leave the lobby fully loaded, (ii) static sectoring, and (iii) dynamic sectoring, in response to any of three criteria: car load, floor population, and average waiting time, allowing a group of elevators to be operated under any three of the dispatching algorithms, not locked into any two.
Abstract:
A method of optimizing the handling of coincident calls in an elevator system which employs ETA strategy in assigning hall calls to a plurality of elevator cars. The method dynamically biases the ETA value of a car having a car call for the floor of the hall call being assigned, with the bias being applied to favor assignment of the hall call to the car having the coincident car call. The amount of the bias is inversely proportional to the car travel distance between the advanced position (AVP floor) of the elevator car and the floor associated with the hall call (scan floor). The relative effect of the bias is predetermined for each floor by preselection of a constant K used in the bias calculation.
Abstract:
A group supervision apparatus for an elevator has apparatus operating under program control to predict periods of time of service by respective cages and to calculate predicted service periods of time, to calculate a mean value and a variance of the predicted service periods of time as to each of the cages, to set a reference value for deciding whether the service periods of time are long or short, to obtain a square value of a difference between the reference value and the mean value, to calculate a value of a ratio between the variance and the square value and to calculate an assignment estimation value on the basis of the value of the ratio in conformity with a predetermined assignment estimation function which becomes a monotonically increasing function of the ratio, to preferentially select a cage as to which the assignment estimation value is smaller, and to assign the selected cage to a hall call.
Abstract:
A group control for elevators in which the allocations of the individual cars of double cars in an elevator group to stored floor calls can be optimized with respect to time, and newly occurring floor calls can be assigned immediately. A computing device is provided for each elevator to calculate operating costs of each car corresponding to the waiting and delay times of passengers at the floor and aboard the car with regard to each floor. The operating costs are reduced if unidirectional calls exist on the calculation floor and on a directly adjacent floor, and/or if coincidences of car calls and such floors occur. The operating costs of the two cars of a double car are compared with one another and the smaller costs are stored in a cost memory. During a cost comparison cycle, the operating costs of all elevators are compared with one another floor by floor via a comparator, whereby an allocation instruction is stored in an allocation memory of the elevator with the smallest operating costs. The allocation instruction designates the floor to which the car is assigned optimally with respect to time.
Abstract:
A plural elevator system having a group controller for controlling the joint response of a plurality of elevator cars to the needs of a building, employs a microprocessor-based group controller for providing up peak, down peak and other zone-controlled elevator functions. The group controller provides a variable interval between dispatching of elevator cars from the lobby during up peak, the dispatching interval being controlled by the approximate round trip time of an elevator being dispatched from the lobby in serving the car calls registered within it and returning to the lobby, or the average of the approximate round trip time for two or three most recently dispatched elevator cars. The dispatching interval is determined by the approximate round trip time divided by the number of elevator cars serving the up peak traffic. In addition, the dispatching interval can be further reduced in dependence upon the number of cars standing at the lobby, the reduction being greater in case the last car leaving the lobby is not more than half full than in the case when the last car leaving the lobby is more than half full. Exemplary elevator and microprocessor structure, an overall group controller microprocessor program logic flowchart, illustrative of the environment of the invention, and detailed logic flowcharts illustrative of an embodiment of the invention are disclosed.