JPH1036019A - Elevator control device - Google Patents

Abstract

(57) [Summary] An object of the present invention is to provide an elevator control device capable of shortening a waiting time and improving an energy saving effect. A probability of occurrence of a call of a landing on each floor is predicted, and when there are a plurality of floors in which the probability is within a predetermined range, a floor close to the abandoned elevator is preferentially set as a standby floor among these floors. The elevator is made to wait at the waiting floor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator control device, and more particularly to an elevator standby control when the vehicle is idle.

[0002]

2. Description of the Related Art Conventional elevator control systems include those in which an elevator is left on a final service floor when a call is cut off, and those in which the elevator is moved to a predetermined floor and waited.

For example, as a first prior art, Japanese Patent Laid-Open No.
As described in -179681, when the elevator call is interrupted, the number of ascending hall calls and the number of descending hall calls that have occurred up to a predetermined time before that time are compared, By making the elevator wait at a predetermined waiting floor in the lower layer when there are many ascending hall calls, and at a predetermined waiting floor in the upper layer when there are many descending hall calls,
In some cases, the waiting time of the user is shortened to improve the service.

A second prior art is disclosed in Japanese Patent Application Laid-Open No. 57-121569.
As described in the official gazette, the number of registered hall calls on each floor per unit time is stored for each day of the week and time zone, and at least one of the past and current data is used to determine the most frequently used number in each time zone. There are elevators on standby at floors with a large number of registered hall calls.

A third prior art is disclosed in Japanese Patent Application Laid-Open No. 60-209475.
As described in the official gazette, the occurrence status of hall calls from each hall is stored for each month, hour, day of week, etc.
There is a method in which the demand of each floor is predicted from these learning data, and an elevator is made to stand by for a floor that becomes the center of demand.

[0006]

In the case of the first prior art, the elevator is made to wait at a predetermined upper or lower floor, regardless of which floor is called.
There is a problem that the moving distance of the elevator increases and power consumption increases.

In the case of the second prior art, when there are a plurality of floors where there is no large difference in the number of registered hall calls, the elevators are made to wait on the floor which is slightly larger, and there is no great difference in the effect. There was a problem of driving uselessly.

[0008] In the case of the third prior art, when an elevator is on standby despite the fact that a standby floor suitable for heavy traffic is determined when the traffic is small, complicated operations are required. There is a problem that the effect is small instead of performing the calculation.

Accordingly, an object of the present invention is to provide an elevator control device capable of shortening a waiting time and improving an energy saving effect.

[0010]

SUMMARY OF THE INVENTION An elevator control apparatus according to the present invention predicts a probability of occurrence of a call of a landing on each floor, and when there are a plurality of floors within a predetermined range, the floor is abandoned. A floor close to the elevator is given priority to be a standby floor, and the elevator is made to wait at the standby floor.

With this configuration, when there are a plurality of candidates for the standby floor, a floor close to the floor where the elevator was abandoned can be set as the standby floor, thereby reducing the waiting time and improving the energy saving effect. be able to.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram for explaining the operation of the present invention. The overall flow of the present invention will be schematically described with reference to FIG. FIG.
(A) shows a state where the elevator whose call has been cut off has been abandoned on the fourth floor. If the elevator is abandoned, waiting on the floor where a hall call is expected can be shortened and the service can be improved, rather than leaving the elevator as it is, leaving the elevator waiting. Therefore, a method of determining a probability of occurrence of a hall call (hereinafter referred to as a hall call occurrence probability) and determining a standby floor will be considered. The hall call occurrence probability can be obtained by learning the presence / absence of a hall call every unit time (for example, 5 minutes) of each floor every day. However, since the nature of the traffic flow is often different between each day of the week or weekdays and holidays, learning may be made separately for each. FIG.
FIG. 1B shows the probability of occurrence of a hall call on each floor in the time zone (for example, 5 minutes) when the elevator is abandoned in FIG. 1A. Here, the first possible floor floor candidate is the ninth floor with the highest hall call occurrence probability of 0.9, but the first floor has a hall call occurrence probability of 0.8, which is not much different from the ninth floor. Therefore, a floor having a hall call occurrence probability within a predetermined range (here, a range from 0.7 to 1.0) is selected as a candidate for a standby floor. In the case of FIG. 1B, the first floor and the ninth floor are candidates for the standby floor, and the other floors are not candidates. If there is only one waiting floor candidate, the floor may be determined as the waiting floor. However, if there are a plurality of waiting floor candidates as shown in FIG. Have to decide. As a condition, in the present invention, a floor close to the floor of the abandoned elevator is preferentially set as the standby floor. Thereby, the moving distance of the elevator can be shortened, and the energy saving effect can be improved. FIGS. 1C and 1D show this state. FIG. 1C shows the distance between the abandoned elevator floor and the standby floor candidate floor. Here, comparing the distances of the two standby floor candidates, the distance of the first floor is 3 and the distance of the ninth floor is 5, so the standby floor is the first floor, and the elevator that has been abandoned as shown in FIG. Performs standby operation toward the first floor, which is the standby floor.

FIG. 2 is a block diagram showing one configuration example of the embodiment of the present invention. As shown in FIG. 2, hall buttons 101,...
A car button 51 is provided therein. Hall button 101,
, 110 and the signal from the car button 51 are sent to the elevator control device 2. The elevator controller 2 determines which call the elevator will respond to, drives the motor 3,
The car 5 is moved to the target floor via the sheave 4. The elevator control device 2 performs operation control such as speed control of the elevator, a clock 22 for obtaining time information when learning the probability of occurrence of a hall call, and assigns or interrupts a hall call. An operation management unit 23 that sometimes determines a floor where the elevator is on standby is provided. The operation management unit 23 communicates with the CPU 231 via the bus 232, an I / O 233 that is an interface unit with other devices,
The configuration is such that a RAM 234 for storing a hall call occurrence probability and the like and a ROM 235 for storing programs and the like are connected. The I / O 233 has landing buttons 101,.
0, the operation control unit 21, the clock 22, and the car button 51 are connected to each other.

The standby floor determination process performed by the operation management unit 23 will be described with reference to the flowchart shown in FIG.

In step S1, the process waits until the elevator is dropped off. When the elevator is abandoned, the time is read from the clock 22 (S
2) Read the hall call occurrence probability of each floor corresponding to the current time from the RAM 234 (S3). Next, a floor having the hall call occurrence probability within a predetermined range is set as a standby floor candidate floor (S4).
It is determined whether or not there is a standby floor candidate floor (S5). If there is no standby floor candidate floor, the process is terminated there, and the elevator is left on the drop-off floor. If there is a standby floor candidate floor, S
The process proceeds to step S6, and it is determined whether or not there is one standby floor candidate floor. If there is one, the process jumps to S13, and that floor is set as the standby floor. If there are a plurality of standby floor candidate floors, the process goes to S7 through the determinations of S5 and S6. In S7, the position of the abandoned elevator is read from the operation control unit 21. Then, the distance between each standby floor candidate floor and the elevator is calculated (S8). The floor having the smallest distance among them is determined (S
9). At this time, it is determined whether the floor having the shortest distance is one or two (S10). The floor with the smallest distance is 2
That is, the position of the abandoned elevator is located just halfway between the floors of the two standby floor candidates. If the result of the determination is that there is only one floor with the minimum distance, the process jumps to S13 and sets that floor as the standby floor. If there are two floors with the minimum distance, the process proceeds to S11, where the hall call occurrence probabilities of the two floors are compared (S11), and the larger floor is set as the standby floor (S12). In S14, a standby operation command to the standby floor is issued to the operation control unit 21 and the processing ends.

In the description of the above-described embodiment, the number of elevators that have been abandoned has been described as one. However, even in the case of a plurality of elevators, the same procedure can be adopted by determining the standby floor by the method described in the above-described embodiment in the order that the elevators are abandoned. Function can be realized.

[0018]

As described above, according to the present invention, it is possible to reduce the waiting time when an elevator in a standby state after a call is interrupted and to respond to a newly generated call, and to improve the energy saving effect. .

[Brief description of the drawings]

FIG. 1 is a schematic operation explanatory diagram of the present invention.

FIG. 2 is a block diagram showing a configuration example of an embodiment of the present invention.

FIG. 3 is a flowchart showing processing when a standby floor is determined.

[Explanation of symbols]

2 ... Elevator control device, 5 ... Elevator car, 21
... Operation control unit, 22 ... Clock, 23 ... Operation management unit (including landing call occurrence probability prediction means and standby floor determination means), 101
-110 ... hall buttons installed on the 1st to 10th floors.

 ──────────────────────────────────────────────────の Continuing from the front page (72) Inventor Kazuhiro Segawa 1070 Ma, Hitachinaka-shi, Ibaraki Prefecture Inside the Mito Plant of Hitachi, Ltd. (72) Inventor Toru Yamaguchi 1070 Ma, Hitachinaka-shi, Ibaraki Hitachi, Ltd. Mito factory

Claims (2)

[Claims] An elevator serving a plurality of floors;
Means for predicting the probability of occurrence of a hall call on each floor; means for determining a floor having a high probability of occurrence of the hall call as a standby floor;
In the elevator control device provided with a unit that causes the abandoned elevator to wait at a standby floor by the determination unit, when the occurrence probability is a plurality of floors within a predetermined range, among the floors, the occurrence probability is close to the abandoned floor. An elevator control device comprising means for setting a floor to be a standby floor with priority. 2. The method according to claim 1, wherein when there are a plurality of floors in which the probability of occurrence of a hall call is within a predetermined range, two of the floors have a minimum distance from the abandoned elevator. In this case, the elevator control device is provided with means for preferentially setting the floor having the higher probability of occurrence of the hall call as the standby floor.