JPS63185787A - Group controller for elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an elevator group control device.

In particular, the present invention relates to an elevator group control system suitable for controlling elevators at constant time intervals using a computer.

[Prior Art] Recently, microcomputers (hereinafter referred to as microcomputers) have been applied to various industries, and in the field of elevators, group control devices that efficiently manage multiple elevators and individual elevators are being used. - It is applied to the machine control device that controls. These efforts have made a significant contribution to elevator control systems because of the characteristics of microcomputers, which are small in size, highly functional, highly reliable, and low in cost.

For example, in the case of group management control, it is possible to monitor individual hall calls online, take into account the service status of all hall calls, and select and allocate the most suitable elevator, reducing waiting time. It has contributed greatly.

In addition, priority service control is now possible, such as having multiple elevators service a hall with many passengers or an elevator with short waiting time serving the first executive floor, allowing fine-grained control. It has become to.

However, current elevators employ a call allocation control system that primarily deals with hall calls and car calls. When selecting an elevator to service a newly generated hall call, this method uses past data to predict car calls that will be made by passengers boarding from the assigned hall call floor, and predicts the floor where the car is scheduled to stop. However, an evaluation function method has been proposed that assigns calls preferentially to elevators whose scheduled stop floor matches the newly generated hall call floor (
JP-A-52-47249, JP-A-52-1268
(Refer to Publication No. 4), this eliminates the dumpling operation to some extent,
We are trying to improve our services. Furthermore, recently, an improvement plan has been proposed that aims to improve prediction accuracy by adding a simulation function according to traffic demand and making the weighting coefficient of the above evaluation function variable (Japanese Patent Application Laid-Open No. 56-158739).

[Problem that the invention seeks to solve]

In the above conventional technology, in order to prevent dumpling driving.

Although the positional relationship of elevators is taken into consideration when evaluating call assignments, no consideration is given to cases such as cases where more car calls occur than expected, and depending on the situation, there is a problem that a dumping operation may occur and service may deteriorate. there were.

The purpose of the present invention is to maintain the time interval between elevators at a constant value by actively controlling the speed and stop time, to prevent the occurrence of dumping operation, and to prevent the occurrence of dumping operation even if dumping operation occurs. It is an object of the present invention to provide an elevator group control device that can quickly resolve the situation.

[Means for solving problems]

The above object is to provide a means for predicting and calculating the time interval between each elevator, a means for evaluating the time interval between the elevators and evaluating whether the above-mentioned interval is within a standard 1llIi range, and an elevator time interval evaluation using the evaluation means. An operating condition determining means is provided that uses the results to determine the door opening time of each elevator, and the time interval between the elevators is determined at a fixed period or when a new hall call occurs.
This is achieved by controlling the speed of each elevator, the opening time of the two doors, etc.

(Function) The elevator-to-elevator interval evaluation section provided in the group management control microcomputer determines whether the elevator-to-elevator time interval is within the optimal reference range, larger or smaller than the reference range, and Since the operating conditions of the elevator are determined according to the situation, it is possible to prevent the occurrence of dumping, thereby improving the service.In addition, even if dumping occurs, countermeasures can be taken early. can.

〔Example〕

The present invention will be described in detail below with reference to the embodiments shown in FIGS. 1 and 4, and FIGS. 2 and 3.

FIG. 1 is an overall configuration diagram showing an embodiment of software into which a program for evaluating mutual elevator time intervals of an elevator group control system according to the present invention is introduced. In FIG. 1, the software is roughly divided into operation control system software SF'1 and learning system software SF2.

The operation control system software SFI consists of an operation control program 5F14 that directly commands and controls elevator group management control conditions such as call assignment processing, elevator distributed standby processing, and elevator stop and running time. As the human power information of this program, elevator control data table 5FI1. A hall call table 5F12, an elevator specification table 5F13 such as the number of elevators to be managed, call assignment control parameters calculated and output by the learning software SI" 2, and the elevator mutual time interval evaluation program 5F18 of the present invention. Each elevator found -
There are stopping times and speeds at each stopping floor.

In the learning software SF 2, the elevator usage information collection program 5F20 samples the number of people getting on and off, the hall call, and the contents of the elevator control data table St/12.11 online at regular intervals, and evaluates the elevator mutual time interval. Collect data for call assignment evaluation.

Using this sampling data, the time interval between each elevator is determined and evaluated in program 5F18 for evaluating the time interval between elevators, and the operation control parameter (door opening time) is determined. elevator
Displays the status of each elevator. ! ! K
zs Jl, Jz, Ja.

Ja and its direction (direction of the arrow), the assigned hall call mark for each machine, the newly generated hall call Δ mark, and the car call.
It shows a mark etc. (b) shows the state of (a) as a loop. In (b), the calls (hall and car calls) assigned to each elevator are shown up to the elevator immediately in front of each elevator.

In FIG. 2, if the evaluation control elevator is car No. 2, the time interval to the elevator No. J in front of it and the time interval to the elevator No. J behind it are determined by the following formula.

CxJ=L(K,J)Xtv+Y(K,J)Xts"(
1)(,+ec=L(J,K)X tv+Y(J
p K)X ts”(2)φxz=min (CKI,
Ca5e =・C:cm n)”・＜3)φ
xb=min (CAK, Czx, ...Cae
K) e-・(4) Here, L(K,
J): Distance (m<or floor difference) from Unit K to Unit J) L (J, K); Distance (or floor difference) from Unit J to Unit J (or floor difference) Y (K, J); Assigned to Unit 2 Y (J, K): Of the calls assigned to machine J, the number of calls that are between machine J and machine J (number of stops) ) tv; - Traveling time per floor (unit distance) ts ; - Stopping time per floor CK Time interval from JEK to J machine CJ: Time interval from J machine to J machine φxi; Immediately after the machine Time interval with the previous elevator φKb: The time interval of the car immediately after the car. Next, the calculated time interval of the car to be evaluated is calculated based on the standard time interval diagram (Fig. Using φo and φ− in Figure 3), calculate each elevator − calculated earlier.
Find the change in the door opening time with respect to the time interval for the front and rear elevators, and add it to the standard door opening time to find the door opening time 0. For example, when the time interval between the evaluation elevator and the front elevator is φ11. , the amount of change in the door opening time (stopping time) of each scheduled stop floor is Δt1, and when the time interval with the rear elevator is φkl, the door opening time of each scheduled stop floor is −ΔtZ. This calculated change in door opening time is added to the standard door opening time to, and the door opening time is set by taking into account the number of people waiting on each scheduled stop floor. The door opening time t1 for each floor is determined using the following formula.

tl:MjX (to Δ1.+(-Δtz))
(5) The operation of this program 5F18 is shown in a flowchart as shown in Fig. 4. Fig. 4 assumes that a crowded floor has occurred, and step S'
1' In step 10, read all machine numbers.Next, in step 5T20, it is determined whether or not a crowded floor has been assigned.If 1 has not been assigned, the evaluation machine and immediately before it,
The time interval for which car immediately follows is determined using the above (1) to (4) (step S'L'30).

Next, in step 5T40, the door opening time is calculated using a curve that immediately corresponds to the traffic volume, and in step 5T50,
Find the door opening time (stopping time). For those to which a call on a crowded floor is assigned, the minimum serviceable stop time is set in step 5T60. Next, in step 70, it is determined whether the above work has been completed for all machines,
Once completed, this process is terminated, and the obtained results are output to the elevator control data table 5FII, the operation control program SL-'14, and the optimum call allocation evaluation parameter calculation program SF31.

The traffic demand learning calculation program 5F22 generates a traffic demand pattern based on the traffic flow data obtained by the elevator usage information collection program 5F20, and determines the state of traffic demand. Furthermore, the traffic demand classification program SF'24 compares the previously learned traffic demand data with the newly obtained traffic demand, determines which class the new traffic flow belongs to, and eliminates ambiguity in one class. The 0-th order is temporarily registered as a new traffic flow, and the optimal call allocation evaluation parameter calculation program 5F31 uses the obtained traffic demand and elevator-mutual time interval data, and also the statistical processing calculation program 5F34.
Based on the data obtained, call allocation evaluation parameters are determined. The obtained evaluation parameters and the like are output to the operation control program 5F14. In the operation control program 5F14, various parameter values are substituted into a preset evaluation formula to select the most suitable elevator for a new hall call, and the operation of 0 or more to assign the call is the basic operation of the present invention. Since there is no influence, the explanation will be omitted.The above operation control program 5F14 is operated when a new hall call occurs, but the elevator-mutual time interval evaluation program 5F18 according to the present invention
performs evaluation at regular intervals, outputs the door opening time and speed to the elevator control data table 5FII, updates the table, and executes the evaluation for each machine control program E.
1 "" Send data to E m. Ei～Ell
Then, the door opening time is controlled based on the obtained control data.

〔Effect of the invention〕

As explained above, according to the present invention, the time interval between elevators can be calculated and the stop time (door open time) of the elevators can be controlled according to the time interval, so the time interval between elevators can be controlled. It is possible to maintain a constant value semi-forcibly, which has the effect of preventing the occurrence of dumpling operations and improving service.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram showing an example of the software in which a program for evaluating the elevator mutual time interval of the elevator group control system of the present invention is introduced, and FIG. 2 shows an example of the state of the elevator. FIG. 3 is a state evaluation diagram for calculating the door opening time, and FIG. 4 is a flowchart showing an embodiment of the time interval evaluation program according to the present invention. 81"l...Operation control system software, SF2...
Learning software, 5F14...Motor control program. SI-' 18... Elevator-mutual time interval evaluation program, 5F20... Elevator-usage information collection program, 5F24... Traffic demand learning calculation program. 5F31...Optimum call allocation evaluation parameter calculation program. East 2 - Map (α) (b) House 4 ward

Claims (1)

[Scope of Claims] 1. A plurality of elevators in service between each floor, a call input device for using the elevator provided on each floor, and an elevator selected from the plurality of elevators. In a group management control device equipped with a call assignment program for assigning a call to a hall call, means for predicting and calculating a time interval between each elevator when controlling an elevator to which a hall call is assigned from among the plurality of elevators; Elevator mutual time interval evaluation means for evaluating whether the time interval is within a reference range; and operating condition determining means for determining the door opening time, etc. of each elevator using the mutual elevator time interval evaluation result. An elevator group control device comprising: 2. The elevator group management control system according to claim 1, wherein the door opening time is determined by taking into account predicted passengers getting on and off each stopping floor. 3. When determining the door opening time, if there is a crowded floor, if the elevator that is assigned the call to that floor is assigned a call for a floor on the way to the floor, then 2. The elevator group management control device according to claim 1, wherein the door opening time of an intermediate floor is set to the minimum serviceable time. 4. Activation of the operating condition determining means for each elevator is as follows:
2. The elevator group management control device according to claim 1, wherein the control is performed when at least one of the elevators arrives at a hall call floor. 5. The elevator group management control device according to claim 1, wherein the time interval between the elevators is evaluated using the time interval between the elevator and the elevator that immediately precedes the elevator to be evaluated. . 6. In calculating the time interval between the elevators, the number of hall calls and car calls assigned to each elevator, that is, the number of stops and the distance to the elevator in front, are used as parameters. The elevator group management control device according to item 1.