JPH06630B2 - Elevator group management control device - Google Patents

Description

The present invention relates to an elevator group management control device, and more particularly to an elevator group management control device using a computer.

The conventional hall call allocation control has been to reduce waiting time, mainly for improving passenger services. As seen in the recent energy crisis, it cannot be said that a control method aiming only at improving services is necessarily good. That is, even in the group management control of the elevator, an operation method that saves energy as much as possible is desired.

For this reason, for example, as disclosed in Japanese Patent Laid-Open No. 57-90369, past utilization statuses are accumulated, and a time at which there is a outage is learned based on the accumulated data, so that the time can be timely. There is proposed an energy-saving operation, specifically, a method of starting control for reducing the number of operating vehicles.

However, such a conventional technique cannot meet various demands and lacks flexibility. That is, when the scheduled traffic demand is reached during the scheduled time, the number of elevators operated must be reduced by one.
The fixed number of units was controlled, and it was difficult to say that it would necessarily meet customer demands.

An object of the present invention is to provide a flexible elevator group management control device capable of performing an appropriate energy-saving operation according to a target in terms of convenience of use of the group management elevator and both power consumption. Is.

The main feature of the present invention is a means for obtaining the relationship between the required number of operating elevators or the required speed with respect to the average waiting time and power consumption, and the number of operating elevators according to the target of the average waiting time and power consumption from this relationship. And means for determining the speed.

In a preferred embodiment of the present invention, the means for determining the relationship between the required number of operating elevators or the operating speed with respect to the average waiting time and power consumption is a means for inputting actual traffic demand and simulating the operation of a group-controlled elevator. Is equipped with.

By configuring in this way, energy can be saved with an appropriate number of service elevators or elevator operating speeds according to the targets for average waiting time and power consumption, and it is not necessary to uniformly determine the number of units and speed. ,
Flexible energy saving control can be realized according to the goal.

In other words, depending on the time, it is necessary to save power consumption even if the waiting time is sacrificed, or conversely, even if the power is consumed a little, it is appropriate to meet the demand of building users to shorten the elevator waiting time. Energy saving operation becomes possible.

Hereinafter, the present invention will be described in detail with reference to an embodiment shown in FIGS. 1 to 6. In the description of the embodiments, first, a hardware configuration for implementing the present invention will be described, then an overall software configuration and its control concept will be described, and finally, a flowchart for implementing this control concept will be described.

FIG. 1 shows the overall hardware configuration of an embodiment of the present invention.

The elevator group management controller MA has a microcomputer M1 that controls elevator operation and a microcomputer M2 that controls simulation. Data communication is performed between the microcomputers M1 and M2 by a serial communication processor SDA _c via a communication line CM _c. . The detailed structure and operation of this SDA are disclosed in JP-A-56-37972 and JP-A-56-37973. SDAL is a serial communication processor.

The call signal HC from the hall call device HD is sent to the parallel input / output circuit P ⁱ A to the microcomputer M1 that controls the elevator operation.
And the number control microcomputers E _{1 to} E _a that control individual elevators such as opening and closing doors, accelerating and decelerating the car, etc. (here, the elevator is the nth unit), Serial communication processors SDA _{1 to} SDA similar to the above
It is connected via a communication line CM ₁ ~CM _a and _a.

On the other hand, the signal PM from the power saving target setting device PD, which gives information necessary for determining the optimum operation control parameter of the simulation, is input to the microcomputer M ₂ via the parallel input / output circuit P ⁱ A.

In addition, the machine control microcomputers E _{1 to} E _a include control call input / output elements E ⁱ configured by car call information necessary for control, various safety limit switches of elevators, relays, and response lamps.
O ₁ ~E ⁱ O _n parallel input circuit ^{P i} A and the signal line ^S i O ₁ ~
It is connected via S ⁱ O _n .

FIG. 2 shows the overall configuration of the software. The software is roughly classified into operation control system software SF1 and simulation system software SF2.

The operation control system software SF1 is used for call assignment processing,
It is composed of an operation control program SF14 for directly instructing and controlling the elevator group management control such as the distributed standby process of the elevator. The input information of this program is the elevator control data table SF1 such as elevator position, direction, speed, car call, etc. transmitted from the machine control program.
1, the hall call table SF12, the elevator specification table SF13 such as the number of elevators managed, and the simulation system software SF2.

On the other hand, the simulation software SF2 is composed of the following processing program. That is, (1) data collection program SF20 ... A program that calls the hall, samples the contents of the elevator control data table online at regular intervals, and collects simulation data, and mainly collects traffic demand by destination floor. .

(2) Simulation data operation program SF22
It is a program for calculating the simulation data in consideration of the contents of the online sampling data table SF21 collected by the data collecting program and the contents of the sampling data table in the past time zone.

(3) Various curve calculation programs S by simulation
F23 ... The simulation data table SF24 and the elevator specification table SF25 are input, the simulation is performed for each of a plurality of predetermined parameters, and various curve data tables SF26 are arithmetically output. Various curve data tables SF26 are an average waiting time curve table and a power consumption curve table.

(4) Optimal operation control parameter calculation program SF27
... The above-mentioned various curve tables SF26 and the target value table SF28 set from the external target setting device PD are input, and the optimum operation control parameter SF29 according to the power saving is input.
Is calculated and output.

In addition, a part of the simulation data table SF24 calculated by the simulation data calculation program is also added to the optimum operation control parameter SF29.
This is because the simulation software SF2 evaluates the actual operation result and controls the elevator based on the result. Note that E _{1 to} E _a are machine control programs.

FIG. 3 is a flow chart of various curve calculation programs by simulation.

The parameters of the simulation include the number of elevators, the elevator speed, and their control parameters, and the simulation is executed for each parameter case.

First, simulation data such as traffic volume for each destination floor is set (step SC10), and algorithm parameters are set (step SC20). The algorithm parameters are the number of elevators and the elevator speed, and are selected. Next, step SC
At 30, the control parameters are set and the simulation is executed (step SC40). The control parameter is the number of elevators (number of vehicles parameter), for example, 3,
4, 5, 6 and the speed of the elevator (speed parameter), for example 150, 180, 240, 270, 300
(m / min). Also, it is checked whether or not all control parameters have been completed (step SC50).

Then, the simulation result for each case is stored for each parameter (step SC60). Also, it is checked (SC70) whether or not all algorithms and parameters are completed.

The simulation results are stored in terms of average waiting time and power consumption.

When the simulation is completed for all the above cases, the optimum operation control parameters are calculated (step SC8
0), the program ends.

FIG. 4 is a flow chart showing a specific example of optimum operation control parameter calculation.

First, it is determined whether or not a power saving target value is input by a target setter installed outside (step SC80-
1) If there is no input, group management control is performed with the rated speed of the elevator and the total number of services (step SC8).
0-6). Next, it is determined whether or not the power saving target value substantially matches any one of the parameters of the number of simulated elevators. For example, it is determined whether the power saving target value ± 0.5% and the number of elevators parameter match (step SC80-2). If the number-of-elevators parameter is not within the power-saving target value range, the number-of-elevators parameter having a value closer to the power-saving target value and larger than the power-saving target value is selected (step SC80-3). The elevator speed parameter closest to the power saving target value is selected from the above number parameters (step SC80-4). Next, in the selected elevator number parameter and speed parameter, it is determined whether the average waiting time is smaller than a predetermined reference value. For example, the predetermined reference value is 25 seconds. (Step SC80-5). Here, in the determination, if the average waiting time is smaller than the predetermined reference value, this program ends, and if it is equal to or larger than the reference value, the power saving target value is slightly lowered. For example, a value obtained by subtracting 0.5% from the power saving target value is set as a new power saving target value (step SC80-7), and the same processing as described above is performed from step SC80-2.

FIG. 5 shows the parameter of the number of elevator services as 3,
The average waiting time and the power consumption curve when 4, 5, 6, 7, and 8 are shown. Where f _PN is the power consumption curve,
_TN is the average waiting time curve.

FIG. 6 shows elevator speed parameters of 150, 180,
The average waiting time and power consumption curve when 210, 240, 270, and 300 m / min are shown.

Here, f _PV6 is the power curve when the elevator service number is six, f _PV5 is power curve when the elevator service number is five. Further, f _TV6 is an average waiting time curve when the number of elevator services is 6, and f _TV6 is an average waiting time curve when the number of elevator services is 5.

Advantageous Effects of Invention According to the present invention, it is possible to provide a flexible elevator group management control device capable of performing appropriate energy-saving operation in terms of both convenience of elevator use and power consumption according to the target.

[Brief description of drawings]

FIG. 1 is an overall hardware configuration diagram, FIG. 2 is an overall software configuration diagram, FIG. 3 is a flow chart for creating various curves by simulation, FIG. 4 is a flow chart for calculating optimum operation control parameters, and FIG. FIG. 5 is a relationship diagram between parameters of the number of elevator services and average waiting time and power consumption curve, and FIG. 6 is a relationship diagram between parameters of elevator speed and average waiting time and power consumption curve. E _{1 to} E _a ... Unit control microcomputer, SF1 ... Operation control system software, SF2 ... Simulation system software, PD ... Power saving target setting device, HD ... Hall calling device.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kenichi Kurosawa 3-1, 1-1 Saiwaicho, Hitachi City, Ibaraki Hitachi Ltd. Hitachi Research Laboratory (72) Inventor Masaki Miura 3-chome, Hitachi City, Hitachi, Ibaraki Prefecture No. 1 in Hitachi Research Laboratory, Hitachi, Ltd. (72) Inventor Takaaki Uejima 1070 Ige, Katsuta City, Ibaraki Hitachi, Ltd. Mito Plant (56) Reference JP-A-57-90369 (JP, A) Kai 57-57168 (JP, A) Actual Kai 57-123361 (JP, U)

Claims (2)

[Claims] 1. A plurality of elevators working between multiple floors, a hall calling device for attracting the elevators provided on each floor, and a destination floor provided in a car of each elevator. In a group management elevator equipped with a car call device for controlling and a group management control device for allocating the generated ball call to the elevator, the relationship between the required number of operating elevators and the required speed for each average waiting time and power consumption is shown. An elevator group management control device comprising: a means for determining the number of elevators to be operated and a means for determining the number of elevators to be operated and the speed according to the targets of average waiting time and power consumption. 2. The means for obtaining the relationship between the required number of operating elevators and the required speed with respect to each of the average waiting time and the power consumption in claim 1.
An elevator group management control device equipped with means for simulating the operation of the group management elevator by inputting actual traffic demand.